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-rw-r--r--javascript/duktape/Console.bnd177
-rw-r--r--javascript/duktape/Document.bnd445
-rw-r--r--javascript/duktape/Element.bnd379
-rw-r--r--javascript/duktape/Event.bnd150
-rw-r--r--javascript/duktape/HTMLAnchorElement.bnd39
-rw-r--r--javascript/duktape/HTMLAppletElement.bnd30
-rw-r--r--javascript/duktape/HTMLAreaElement.bnd26
-rw-r--r--javascript/duktape/HTMLBRElement.bnd14
-rw-r--r--javascript/duktape/HTMLBaseElement.bnd17
-rw-r--r--javascript/duktape/HTMLBodyElement.bnd24
-rw-r--r--javascript/duktape/HTMLButtonElement.bnd18
-rw-r--r--javascript/duktape/HTMLCollection.bnd24
-rw-r--r--javascript/duktape/HTMLDivElement.bnd14
-rw-r--r--javascript/duktape/HTMLElement.bnd162
-rw-r--r--javascript/duktape/HTMLFontElement.bnd20
-rw-r--r--javascript/duktape/HTMLFormElement.bnd26
-rw-r--r--javascript/duktape/HTMLFrameElement.bnd35
-rw-r--r--javascript/duktape/HTMLFrameSetElement.bnd17
-rw-r--r--javascript/duktape/HTMLHRElement.bnd24
-rw-r--r--javascript/duktape/HTMLHTMLElement.bnd14
-rw-r--r--javascript/duktape/HTMLHeadingElement.bnd14
-rw-r--r--javascript/duktape/HTMLIFrameElement.bnd41
-rw-r--r--javascript/duktape/HTMLImageElement.bnd47
-rw-r--r--javascript/duktape/HTMLInputElement.bnd64
-rw-r--r--javascript/duktape/HTMLLIElement.bnd17
-rw-r--r--javascript/duktape/HTMLLabelElement.bnd14
-rw-r--r--javascript/duktape/HTMLLegendElement.bnd14
-rw-r--r--javascript/duktape/HTMLLinkElement.bnd35
-rw-r--r--javascript/duktape/HTMLMapElement.bnd14
-rw-r--r--javascript/duktape/HTMLMarqueeElement.bnd11
-rw-r--r--javascript/duktape/HTMLMenuElement.bnd14
-rw-r--r--javascript/duktape/HTMLMetaElement.bnd23
-rw-r--r--javascript/duktape/HTMLOListElement.bnd18
-rw-r--r--javascript/duktape/HTMLObjectElement.bnd54
-rw-r--r--javascript/duktape/HTMLOptionElement.bnd28
-rw-r--r--javascript/duktape/HTMLParagraphElement.bnd14
-rw-r--r--javascript/duktape/HTMLParamElement.bnd23
-rw-r--r--javascript/duktape/HTMLPreElement.bnd15
-rw-r--r--javascript/duktape/HTMLQuoteElement.bnd14
-rw-r--r--javascript/duktape/HTMLScriptElement.bnd32
-rw-r--r--javascript/duktape/HTMLSelectElement.bnd26
-rw-r--r--javascript/duktape/HTMLStyleElement.bnd17
-rw-r--r--javascript/duktape/HTMLTableCaptionElement.bnd14
-rw-r--r--javascript/duktape/HTMLTableCellElement.bnd46
-rw-r--r--javascript/duktape/HTMLTableColElement.bnd26
-rw-r--r--javascript/duktape/HTMLTableElement.bnd38
-rw-r--r--javascript/duktape/HTMLTableRowElement.bnd30
-rw-r--r--javascript/duktape/HTMLTableSectionElement.bnd23
-rw-r--r--javascript/duktape/HTMLTextAreaElement.bnd30
-rw-r--r--javascript/duktape/HTMLTitleElement.bnd14
-rw-r--r--javascript/duktape/Location.bnd353
-rw-r--r--javascript/duktape/Makefile40
-rw-r--r--javascript/duktape/Navigator.bnd87
-rw-r--r--javascript/duktape/Node.bnd479
-rw-r--r--javascript/duktape/NodeList.bnd54
-rw-r--r--javascript/duktape/Window.bnd146
-rw-r--r--javascript/duktape/duk_config.h3753
-rw-r--r--javascript/duktape/duk_custom.h37
-rw-r--r--javascript/duktape/dukky.c1135
-rw-r--r--javascript/duktape/dukky.h45
-rw-r--r--javascript/duktape/duktape.c86513
-rw-r--r--javascript/duktape/duktape.h1567
-rw-r--r--javascript/duktape/netsurf.bnd200
63 files changed, 0 insertions, 96834 deletions
diff --git a/javascript/duktape/Console.bnd b/javascript/duktape/Console.bnd
deleted file mode 100644
index 734f0035a..000000000
--- a/javascript/duktape/Console.bnd
+++ /dev/null
@@ -1,177 +0,0 @@
-/* Console binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- * Copyright 2015 Daniel Silverstone <dsilvers@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Console {
- private unsigned int group;
- prologue %{
-#include <nsutils/time.h>
-
-#define CONSOLE_TIMERS MAGIC(ConsoleTimers)
-
-static void
-write_log_entry(duk_context *ctx, unsigned int group, char logtype)
-{
- /* objs... */
- for (int i = 0; i < duk_get_top(ctx); ++i) {
- (void)duk_safe_to_string(ctx, i);
- }
- /* strs... */
- duk_push_sprintf(ctx, "%c: ", logtype);
- duk_insert(ctx, 0);
- /* pfx strs... */
- for (unsigned int u = 0; u < group; ++u) {
- duk_push_lstring(ctx, " ", 1);
- duk_insert(ctx, 0);
- }
- /* spcs... pfx strs... */
- duk_concat(ctx, duk_get_top(ctx));
- /* str */
- LOG("%s", duk_safe_to_string(ctx, 0));
-}
-
-%};
-};
-
-init Console ()
-%{
- priv->group = 0;
- duk_push_object(ctx);
- duk_put_prop_string(ctx, 0, CONSOLE_TIMERS);
-%}
-
-method Console::group ()
-%{
- priv->group ++;
- return 0;
-%}
-
-method Console::groupCollapsed ()
-%{
- priv->group ++;
- return 0;
-%}
-
-method Console::groupEnd ()
-%{
- if (priv->group)
- priv->group --;
- return 0;
-%}
-
-method Console::info()
-%{
- write_log_entry(ctx, priv->group, 'I');
- return 0;
-%}
-
-method Console::debug()
-%{
- write_log_entry(ctx, priv->group, 'D');
- return 0;
-%}
-
-method Console::error()
-%{
- write_log_entry(ctx, priv->group, 'E');
- return 0;
-%}
-
-method Console::log()
-%{
- write_log_entry(ctx, priv->group, 'L');
- return 0;
-%}
-
-method Console::warn()
-%{
- write_log_entry(ctx, priv->group, 'W');
- return 0;
-%}
-
-method Console::dir()
-%{
- write_log_entry(ctx, priv->group, 'd');
- return 0;
-%}
-
-method Console::time()
-%{
- uint64_t time_ms = 0;
-
- if (nsu_getmonotonic_ms(&time_ms) != NSUERROR_OK)
- return 0;
-
- if (!duk_is_string(ctx, 0)) {
- duk_error(ctx, DUK_ERR_ERROR, "Console.time() takes a string");
- }
-
- duk_set_top(ctx, 1);
-
- duk_push_uint(ctx, (duk_uint_t)time_ms);
-
- duk_push_this(ctx);
- duk_get_prop_string(ctx, -1, CONSOLE_TIMERS);
- duk_insert(ctx, 0);
- duk_pop(ctx);
-
- duk_put_prop(ctx, 0);
-
- return 0;
-%}
-
-method Console::timeEnd()
-%{
- uint64_t time_ms = 0;
- uint64_t old_time_ms = 0;
-
- if (nsu_getmonotonic_ms(&time_ms) != NSUERROR_OK)
- return 0;
-
- if (!duk_is_string(ctx, 0)) {
- duk_error(ctx, DUK_ERR_ERROR, "Console.time() takes a string");
- }
-
- duk_set_top(ctx, 1);
-
- duk_push_this(ctx);
- duk_get_prop_string(ctx, -1, CONSOLE_TIMERS);
- duk_insert(ctx, 0);
- duk_pop(ctx);
-
- duk_dup(ctx, -1);
- duk_get_prop(ctx, 0);
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_push_uint(ctx, (duk_uint_t)time_ms);
- }
- /* timers timername oldval */
- old_time_ms = duk_to_uint32(ctx, -1);
- duk_pop(ctx);
- duk_dup(ctx, -1);
- duk_insert(ctx, 0);
- duk_del_prop(ctx, 0);
- duk_push_string(ctx, "Timer elapsed: ");
- duk_insert(ctx, 0);
- duk_push_sprintf(ctx, "%lu ms", (duk_uint_t)(time_ms - old_time_ms));
- write_log_entry(ctx, priv->group, 'T');
- return 0;
-%}
-
-method Console::trace ()
-%{
- duk_idx_t i = duk_push_error_object(ctx, DUK_ERR_ERROR, "Dummy Error");
- duk_get_prop_string(ctx, i, "stack");
- duk_safe_to_string(ctx, -1);
- duk_insert(ctx, 0);
- duk_set_top(ctx, 1);
- write_log_entry(ctx, priv->group, 'S');
- return 0;
-%}
diff --git a/javascript/duktape/Document.bnd b/javascript/duktape/Document.bnd
deleted file mode 100644
index 8658aec45..000000000
--- a/javascript/duktape/Document.bnd
+++ /dev/null
@@ -1,445 +0,0 @@
-/* document binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-prologue Document()
-%{
-#include "utils/corestrings.h"
-#include "utils/libdom.h"
-#include "utils/utils.h"
-#include "content/hlcache.h"
-#include "render/html_internal.h"
-#include "content/urldb.h"
-
-#define HANDLER_MAGIC MAGIC(HANDLER_MAP)
-%}
-
-
-init Document(struct dom_document *document::node);
-
-method Document::write()
-%{
- struct html_content *htmlc;
- duk_size_t text_len;
- dom_exception err;
- const char *text;
-
- for (int i = 0; i < duk_get_top(ctx); ++i) {
- duk_safe_to_string(ctx, i);
- }
- duk_concat(ctx, duk_get_top(ctx));
- text = duk_safe_to_lstring(ctx, 0, &text_len);
- JS_LOG("Writing %*s", (int)text_len, text);
-
- err = dom_node_get_user_data(priv->parent.node,
- corestring_dom___ns_key_html_content_data,
- &htmlc);
- if ((err != DOM_NO_ERR) || (htmlc == NULL)) {
- LOG("error getting htmlc. parent node:%p htmlc:%p",
- priv->parent.node, htmlc);
- return 0;
- } else if (htmlc->parser == NULL) {
- LOG("error; no parser for htmlc: %p", htmlc);
- return 0;
- }
-
- dom_hubbub_parser_insert_chunk(htmlc->parser,
- (uint8_t *)text, text_len);
-
- return 0;
-%}
-
-method Document::writeln()
-%{
- const char nl[] = "\n";
- struct html_content *htmlc;
- duk_size_t text_len;
- const char *text;
- dom_exception err;
-
- for (int i = 0; i < duk_get_top(ctx); ++i) {
- duk_safe_to_string(ctx, i);
- }
- duk_concat(ctx, duk_get_top(ctx));
- text = duk_safe_to_lstring(ctx, 0, &text_len);
-
- JS_LOG("Writeln %*s", (int)text_len, text);
- err = dom_node_get_user_data(priv->parent.node,
- corestring_dom___ns_key_html_content_data,
- &htmlc);
- if ((err != DOM_NO_ERR) || (htmlc == NULL)) {
- LOG("error getting htmlc. parent node:%p htmlc:%p",
- priv->parent.node, htmlc);
- return 0;
- } else if (htmlc->parser == NULL) {
- LOG("error; no parser for htmlc: %p", htmlc);
- return 0;
- }
-
- dom_hubbub_parser_insert_chunk(htmlc->parser, (uint8_t *)text, text_len);
- dom_hubbub_parser_insert_chunk(htmlc->parser, (uint8_t *)nl, SLEN(nl));
-
- return 0;
-%}
-
-method Document::createTextNode()
-%{
- dom_node *newnode;
- dom_exception err;
- duk_size_t text_len;
- const char *text = duk_safe_to_lstring(ctx, 0, &text_len);
- dom_string *text_str;
-
- err = dom_string_create((const uint8_t*)text, text_len, &text_str);
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- err = dom_document_create_text_node(priv->parent.node,
- text_str,
- &newnode);
- if (err != DOM_NO_ERR) {
- dom_string_unref(text_str);
- return 0; /* coerced to undefined */
- }
-
- dom_string_unref(text_str);
-
- dukky_push_node(ctx, newnode);
-
- dom_node_unref(newnode);
-
- return 1;
-%}
-
-method Document::createElement()
-%{
- dom_node *newnode;
- dom_exception err;
- duk_size_t text_len;
- const char *text = duk_safe_to_lstring(ctx, 0, &text_len);
- dom_string *text_str;
-
- err = dom_string_create((const uint8_t*)text, text_len, &text_str);
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- err = dom_document_create_element_ns(priv->parent.node,
- corestring_dom_html_namespace,
- text_str,
- &newnode);
- if (err != DOM_NO_ERR) {
- dom_string_unref(text_str);
- return 0; /* coerced to undefined */
- }
-
- dom_string_unref(text_str);
-
- dukky_push_node(ctx, newnode);
-
- dom_node_unref(newnode);
-
- return 1;
-%}
-
-getter Document::head()
-%{
- struct dom_nodelist *nodes;
- struct dom_node *retnode;
- dom_exception err;
- err = dom_document_get_elements_by_tag_name(priv->parent.node,
- corestring_dom_HEAD,
- &nodes);
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- err = dom_nodelist_item(nodes, 0, &retnode);
-
- if (err != DOM_NO_ERR) {
- dom_nodelist_unref(nodes);
- return 0; /* coerced to undefined */
- }
-
- dom_nodelist_unref(nodes);
-
- if (retnode == NULL) return 0; /* coerced to undefined */
-
- dukky_push_node(ctx, retnode);
-
- dom_node_unref(retnode);
-
- return 1;
-%}
-
-getter Document::body()
-%{
- struct dom_nodelist *nodes;
- struct dom_node *retnode;
- dom_exception err;
- err = dom_document_get_elements_by_tag_name(priv->parent.node,
- corestring_dom_BODY,
- &nodes);
- if (err != DOM_NO_ERR) {
- return 0; /* coerced to undefined */
- }
-
- err = dom_nodelist_item(nodes, 0, &retnode);
-
- if (err != DOM_NO_ERR) {
- dom_nodelist_unref(nodes);
- return 0; /* coerced to undefined */
- }
-
- dom_nodelist_unref(nodes);
-
- if (retnode != NULL) {
- dukky_push_node(ctx, retnode);
-
- dom_node_unref(retnode);
-
- return 1;
- }
-
- return 0; /* coerced to undefined */
-%}
-
-getter Document::location()
-%{
- /* retrieve the location object from the root object (window) */
- duk_push_global_object(ctx);
- duk_get_prop_string(ctx, -1, "location");
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- return 0;
- }
- return 1;
-%}
-
-
-method Document::getElementById()
-%{
- dom_string *elementId_dom;
- dom_element *element;
- dom_exception exc;
- duk_size_t text_len;
- const char *text = duk_safe_to_lstring(ctx, 0, &text_len);
-
- exc = dom_string_create((uint8_t*)text, text_len, &elementId_dom);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- exc = dom_document_get_element_by_id(((node_private_t *)priv)->node,
- elementId_dom, &element);
- dom_string_unref(elementId_dom);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- if (element != NULL) {
- dukky_push_node(ctx, (dom_node *)element);
- dom_node_unref(element);
- return 1;
- }
-
- return 0;
-%}
-
-getter Document::documentElement()
-%{
- dom_exception exc;
- dom_element *element;
-
- exc = dom_document_get_document_element(((node_private_t *)priv)->node,
- &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- if (element == NULL) {
- return 0;
- }
-
- dukky_push_node(ctx, (dom_node *)element);
- dom_node_unref(element);
-
- return 1;
-
-%}
-
-method Document::getElementsByTagName()
-%{
- dom_nodelist *nodes;
- dom_exception err;
- duk_size_t text_len;
- const char *text = duk_safe_to_lstring(ctx, 0, &text_len);
- dom_string *tag;
-
- err = dom_string_create((uint8_t*)text, text_len, &tag);
-
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- err = dom_document_get_elements_by_tag_name(((node_private_t *)priv)->node,
- tag, &nodes);
- dom_string_unref(tag);
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- if (nodes == NULL) return 0; /* coerced to undefined */
-
- duk_push_pointer(ctx, nodes);
- dukky_create_object(ctx, PROTO_NAME(NODELIST), 1);
- dom_nodelist_unref(nodes);
- return 1;
-%}
-
-getter Document::cookie()
-%{
- char *cookie_str;
- struct html_content *htmlc;
- dom_exception err;
-
- err = dom_node_get_user_data(priv->parent.node,
- corestring_dom___ns_key_html_content_data,
- &htmlc);
- if ((err == DOM_NO_ERR) && (htmlc != NULL)) {
- cookie_str = urldb_get_cookie(llcache_handle_get_url(htmlc->base.llcache), false);
- if (cookie_str != NULL) {
- duk_push_string(ctx, cookie_str);
- free(cookie_str);
- return 1;
- }
- } else {
- LOG("error getting htmlc. parent node:%p htmlc:%p",
- priv->parent.node, htmlc);
- }
- return 0;
-%}
-
-getter Document::onabort();
-setter Document::onabort();
-getter Document::onautocompleteerror();
-setter Document::onautocompleteerror();
-getter Document::onautocomplete();
-setter Document::onautocomplete();
-getter Document::onblur();
-setter Document::onblur();
-getter Document::oncancel();
-setter Document::oncancel();
-getter Document::oncanplaythrough();
-setter Document::oncanplaythrough();
-getter Document::oncanplay();
-setter Document::oncanplay();
-getter Document::onchange();
-setter Document::onchange();
-getter Document::onclick();
-setter Document::onclick();
-getter Document::onclose();
-setter Document::onclose();
-getter Document::oncontextmenu();
-setter Document::oncontextmenu();
-getter Document::oncuechange();
-setter Document::oncuechange();
-getter Document::ondblclick();
-setter Document::ondblclick();
-getter Document::ondragend();
-setter Document::ondragend();
-getter Document::ondragenter();
-setter Document::ondragenter();
-getter Document::ondragexit();
-setter Document::ondragexit();
-getter Document::ondragleave();
-setter Document::ondragleave();
-getter Document::ondragover();
-setter Document::ondragover();
-getter Document::ondragstart();
-setter Document::ondragstart();
-getter Document::ondrag();
-setter Document::ondrag();
-getter Document::ondrop();
-setter Document::ondrop();
-getter Document::ondurationchange();
-setter Document::ondurationchange();
-getter Document::onemptied();
-setter Document::onemptied();
-getter Document::onended();
-setter Document::onended();
-getter Document::onfocus();
-setter Document::onfocus();
-getter Document::oninput();
-setter Document::oninput();
-getter Document::oninvalid();
-setter Document::oninvalid();
-getter Document::onkeydown();
-setter Document::onkeydown();
-getter Document::onkeypress();
-setter Document::onkeypress();
-getter Document::onkeyup();
-setter Document::onkeyup();
-getter Document::onloadeddata();
-setter Document::onloadeddata();
-getter Document::onloadedmetadata();
-setter Document::onloadedmetadata();
-getter Document::onloadstart();
-setter Document::onloadstart();
-getter Document::onload();
-setter Document::onload();
-getter Document::onmousedown();
-setter Document::onmousedown();
-getter Document::onmouseenter();
-setter Document::onmouseenter();
-getter Document::onmouseleave();
-setter Document::onmouseleave();
-getter Document::onmousemove();
-setter Document::onmousemove();
-getter Document::onmouseout();
-setter Document::onmouseout();
-getter Document::onmouseover();
-setter Document::onmouseover();
-getter Document::onmouseup();
-setter Document::onmouseup();
-getter Document::onpause();
-setter Document::onpause();
-getter Document::onplaying();
-setter Document::onplaying();
-getter Document::onplay();
-setter Document::onplay();
-getter Document::onprogress();
-setter Document::onprogress();
-getter Document::onratechange();
-setter Document::onratechange();
-getter Document::onreadystatechange();
-setter Document::onreadystatechange();
-getter Document::onreset();
-setter Document::onreset();
-getter Document::onresize();
-setter Document::onresize();
-getter Document::onscroll();
-setter Document::onscroll();
-getter Document::onseeked();
-setter Document::onseeked();
-getter Document::onseeking();
-setter Document::onseeking();
-getter Document::onselect();
-setter Document::onselect();
-getter Document::onshow();
-setter Document::onshow();
-getter Document::onsort();
-setter Document::onsort();
-getter Document::onstalled();
-setter Document::onstalled();
-getter Document::onsubmit();
-setter Document::onsubmit();
-getter Document::onsuspend();
-setter Document::onsuspend();
-getter Document::ontimeupdate();
-setter Document::ontimeupdate();
-getter Document::ontoggle();
-setter Document::ontoggle();
-getter Document::onvolumechange();
-setter Document::onvolumechange();
-getter Document::onwaiting();
-setter Document::onwaiting();
-getter Document::onwheel();
-setter Document::onwheel();
diff --git a/javascript/duktape/Element.bnd b/javascript/duktape/Element.bnd
deleted file mode 100644
index d34e8c1eb..000000000
--- a/javascript/duktape/Element.bnd
+++ /dev/null
@@ -1,379 +0,0 @@
-/* document binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Element {
- prologue %{
-#include <utils/corestrings.h>
-%};
-};
-
-init Element(struct dom_element *element::node);
-
-getter Element::firstElementChild()
-%{
- dom_node *element;
- dom_exception exc;
- dom_node_type node_type;
- dom_node *next_node;
-
- exc = dom_node_get_first_child(((node_private_t*)priv)->node, &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- while (element != NULL) {
- exc = dom_node_get_node_type(element, &node_type);
- if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
- /* found it */
- break;
- }
-
- exc = dom_node_get_next_sibling(element, &next_node);
- dom_node_unref(element);
- if (exc == DOM_NO_ERR) {
- element = next_node;
- } else {
- element = NULL;
- }
- }
- if (dukky_push_node(ctx, (dom_node *)element) == false) {
- dom_node_unref(element);
- return 0;
- }
- dom_node_unref(element);
- return 1;
-%}
-
-getter Element::lastElementChild()
-%{
- dom_node *element;
- dom_exception exc;
- dom_node_type node_type;
- dom_node *next_node;
-
- exc = dom_node_get_last_child(((node_private_t*)priv)->node, &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- while (element != NULL) {
- exc = dom_node_get_node_type(element, &node_type);
- if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
- /* found it */
- break;
- }
-
- exc = dom_node_get_previous_sibling(element, &next_node);
- dom_node_unref(element);
- if (exc == DOM_NO_ERR) {
- element = next_node;
- } else {
- element = NULL;
- }
- }
- if (dukky_push_node(ctx, (dom_node *)element) == false) {
- dom_node_unref(element);
- return 0;
- }
- dom_node_unref(element);
- return 1;
-%}
-
-getter Element::previousElementSibling()
-%{
- dom_node *element;
- dom_exception exc;
- dom_node_type node_type;
- dom_node *sib_node;
-
- exc = dom_node_get_previous_sibling(((node_private_t *)priv)->node, &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- while (element != NULL) {
- exc = dom_node_get_node_type(element, &node_type);
- if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
- /* found it */
- break;
- }
-
- exc = dom_node_get_previous_sibling(element, &sib_node);
- dom_node_unref(element);
- if (exc == DOM_NO_ERR) {
- element = sib_node;
- } else {
- element = NULL;
- }
- }
- if (dukky_push_node(ctx, (dom_node *)element) == false) {
- dom_node_unref(element);
- return 0;
- }
- dom_node_unref(element);
- return 1;
-%}
-
-getter Element::nextElementSibling()
-%{
- dom_node *element;
- dom_exception exc;
- dom_node_type node_type;
- dom_node *sib_node;
-
- exc = dom_node_get_next_sibling(((node_private_t *)priv)->node, &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- while (element != NULL) {
- exc = dom_node_get_node_type(element, &node_type);
- if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
- /* found it */
- break;
- }
-
- exc = dom_node_get_next_sibling(element, &sib_node);
- dom_node_unref(element);
- if (exc == DOM_NO_ERR) {
- element = sib_node;
- } else {
- element = NULL;
- }
- }
- if (dukky_push_node(ctx, (dom_node *)element) == false) {
- dom_node_unref(element);
- return 0;
- }
- dom_node_unref(element);
- return 1;
-%}
-
-getter Element::childElementCount()
-%{
- dom_node *element;
- dom_exception exc;
- dom_node_type node_type;
- dom_node *next_node;
- duk_uint_t jsret = 0;
-
- exc = dom_node_get_first_child(((node_private_t *)priv)->node, &element);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- while (element != NULL) {
- exc = dom_node_get_node_type(element, &node_type);
- if ((exc == DOM_NO_ERR) && (node_type == DOM_ELEMENT_NODE)) {
- jsret += 1;
- }
-
- exc = dom_node_get_next_sibling(element, &next_node);
- dom_node_unref(element);
- if (exc == DOM_NO_ERR) {
- element = next_node;
- } else {
- element = NULL;
- }
- }
- LOG("I found %u of them", jsret);
- duk_push_uint(ctx, jsret);
- return 1;
-%}
-
-method Element::getElementsByTagName ()
-%{
- dom_nodelist *nlist = NULL;
- dom_exception exc;
- dom_string *tagname;
- duk_size_t len;
- const char *str = duk_to_lstring(ctx, 0, &len);
-
- exc = dom_string_create((const uint8_t *)str, len, &tagname);
-
- if (exc != DOM_NO_ERR) return 0;
-
- exc = dom_element_get_elements_by_tag_name(priv->parent.node,
- tagname, &nlist);
- dom_string_unref(tagname);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_pointer(ctx, nlist);
- dukky_create_object(ctx, PROTO_NAME(NODELIST), 1);
- dom_nodelist_unref(nlist);
-
- return 1;
-%}
-
-getter Element::id ()
-%{
- dom_string *idstr = NULL;
- dom_exception exc;
-
- exc = dom_element_get_attribute(priv->parent.node,
- corestring_dom_id,
- &idstr);
- if (exc != DOM_NO_ERR) return 0;
- if (idstr == NULL) {
- duk_push_lstring(ctx, "", 0);
- } else {
- duk_push_lstring(ctx, dom_string_data(idstr),
- dom_string_length(idstr));
- dom_string_unref(idstr);
- }
- return 1;
-%}
-
-setter Element::id ()
-%{
- dom_string *idstr = NULL;
- dom_exception exc;
- duk_size_t slen;
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
-
- exc = dom_string_create((const uint8_t *)s, slen, &idstr);
- if (exc != DOM_NO_ERR) return 0;
-
- exc = dom_element_set_attribute(priv->parent.node,
- corestring_dom_id,
- idstr);
- dom_string_unref(idstr);
- if (exc != DOM_NO_ERR) return 0;
- return 0;
-%}
-
-
-method Element::removeAttribute()
-%{
- dom_string *attr = NULL;
- dom_exception exc;
- duk_size_t slen;
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
-
- exc = dom_string_create((const uint8_t *)s, slen, &attr);
- if (exc != DOM_NO_ERR) return 0;
-
- exc = dom_element_remove_attribute(priv->parent.node, attr);
- dom_string_unref(attr);
- if (exc != DOM_NO_ERR) return 0;
- return 0;
-%}
-
-method Element::getAttribute()
-%{
- dom_string *attr_name = NULL;
- dom_string *attr_value = NULL;
- dom_exception exc;
- duk_size_t slen;
-
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
- exc = dom_string_create((const uint8_t *)s, slen, &attr_name);
- duk_pop(ctx);
-
- exc = dom_element_get_attribute(priv->parent.node,
- attr_name, &attr_value);
- dom_string_unref(attr_name);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- if (attr_value == NULL) {
- duk_push_null(ctx);
- } else {
- duk_push_lstring(ctx, dom_string_data(attr_value),
- dom_string_length(attr_value));
- dom_string_unref(attr_value);
- }
- return 1;
-%}
-
-method Element::setAttribute()
-%{
- dom_exception exc;
- dom_string *attr_str, *value_str;
- duk_size_t attr_len, value_len;
- const char *attr = duk_safe_to_lstring(ctx, 0, &attr_len);
- const char *value = duk_safe_to_lstring(ctx, 1, &value_len);
-
- exc = dom_string_create((const uint8_t *)attr, attr_len, &attr_str);
- if (exc != DOM_NO_ERR) return 0;
-
- exc = dom_string_create((const uint8_t *)value, value_len, &value_str);
- if (exc != DOM_NO_ERR) {
- dom_string_unref(attr_str);
- return 0;
- }
-
- exc = dom_element_set_attribute(priv->parent.node,
- attr_str, value_str);
- dom_string_unref(attr_str);
- dom_string_unref(value_str);
- if (exc != DOM_NO_ERR) return 0;
- return 0;
-%}
-
-method Element::hasAttribute()
-%{
- dom_string *attr_name = NULL;
- dom_exception exc;
- duk_size_t slen;
- bool res;
-
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
- exc = dom_string_create((const uint8_t *)s, slen, &attr_name);
- duk_pop(ctx);
-
- exc = dom_element_has_attribute(priv->parent.node,
- attr_name, &res);
- dom_string_unref(attr_name);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- duk_push_boolean(ctx, res);
- return 1;
-%}
-
-getter Element::className ()
-%{
- dom_string *classstr = NULL;
- dom_exception exc;
-
- exc = dom_element_get_attribute(priv->parent.node,
- corestring_dom_class,
- &classstr);
- if (exc != DOM_NO_ERR) return 0;
- if (classstr == NULL) {
- duk_push_lstring(ctx, "", 0);
- } else {
- duk_push_lstring(ctx, dom_string_data(classstr),
- dom_string_length(classstr));
- dom_string_unref(classstr);
- }
- return 1;
-%}
-
-setter Element::className ()
-%{
- dom_string *classstr = NULL;
- dom_exception exc;
- duk_size_t slen;
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
-
- exc = dom_string_create((const uint8_t *)s, slen, &classstr);
- if (exc != DOM_NO_ERR) return 0;
-
- exc = dom_element_set_attribute(priv->parent.node,
- corestring_dom_class,
- classstr);
- dom_string_unref(classstr);
- if (exc != DOM_NO_ERR) return 0;
- return 0;
-%}
-
diff --git a/javascript/duktape/Event.bnd b/javascript/duktape/Event.bnd
deleted file mode 100644
index a0bc3c3e7..000000000
--- a/javascript/duktape/Event.bnd
+++ /dev/null
@@ -1,150 +0,0 @@
-/* Event binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- * Copyright 2015 Daniel Silverstone <dsilvers@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Event {
- private dom_event *evt;
-};
-
-init Event (struct dom_event *evt)
-%{
- priv->evt = evt;
- dom_event_ref(evt);
-%}
-
-fini Event ()
-%{
- dom_event_unref(priv->evt);
-%}
-
-/* Note: many of these could be automatics once nsgenbind gets there. */
-
-getter Event::type ()
-%{
- dom_string *ret;
- dom_exception exc;
-
- exc = dom_event_get_type(priv->evt, &ret);
- if (exc != DOM_NO_ERR) return 0;
- if (ret == NULL) {
- duk_push_lstring(ctx, "", 0);
- } else {
- duk_push_lstring(ctx, dom_string_data(ret),
- dom_string_length(ret));
- dom_string_unref(ret);
- }
-
- return 1;
-%}
-
-getter Event::target ()
-%{
- /** @todo Decide HTF this works wrt. Window as an event target */
- dom_node *et;
- dom_exception exc;
-
- exc = dom_event_get_target(priv->evt, &et);
- if (exc != DOM_NO_ERR) return 0;
-
- dukky_push_node(ctx, et);
- return 1;
-%}
-
-getter Event::currentTarget ()
-%{
- /** @todo Decide HTF this works wrt. Window as an event target */
- dom_node *et;
- dom_exception exc;
-
- exc = dom_event_get_current_target(priv->evt, &et);
- if (exc != DOM_NO_ERR) return 0;
-
- dukky_push_node(ctx, et);
- return 1;
-%}
-
-getter Event::eventPhase ()
-%{
- dom_exception exc;
- dom_event_flow_phase phase;
-
- exc = dom_event_get_event_phase(priv->evt, &phase);
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_uint(ctx, phase);
- return 1;
-%}
-
-method Event::stopPropagation ()
-%{
- dom_exception exc;
-
- exc = dom_event_stop_propagation(priv->evt);
- if (exc != DOM_NO_ERR) return 0;
-
- return 0;
-%}
-
-method Event::stopImmediatePropagation ()
-%{
- dom_exception exc;
-
- exc = dom_event_stop_immediate_propagation(priv->evt);
- if (exc != DOM_NO_ERR) return 0;
-
- return 0;
-%}
-
-getter Event::bubbles ()
-%{
- dom_exception exc;
- bool ret;
-
- exc = dom_event_get_bubbles(priv->evt, &ret);
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_boolean(ctx, ret);
- return 1;
-%}
-
-getter Event::cancelable ()
-%{
- dom_exception exc;
- bool ret;
-
- exc = dom_event_get_cancelable(priv->evt, &ret);
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_boolean(ctx, ret);
- return 1;
-%}
-
-method Event::preventDefault ()
-%{
- dom_exception exc;
-
- exc = dom_event_prevent_default(priv->evt);
- if (exc != DOM_NO_ERR) return 0;
-
- return 0;
-%}
-
-getter Event::defaultPrevented ()
-%{
- dom_exception exc;
- bool ret;
-
- exc = dom_event_is_default_prevented(priv->evt, &ret);
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_boolean(ctx, ret);
- return 1;
-%}
-
diff --git a/javascript/duktape/HTMLAnchorElement.bnd b/javascript/duktape/HTMLAnchorElement.bnd
deleted file mode 100644
index 3dcfef72e..000000000
--- a/javascript/duktape/HTMLAnchorElement.bnd
+++ /dev/null
@@ -1,39 +0,0 @@
-/* HTML anchor element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLAnchorElement(struct dom_html_element *html_anchor_element::html_element);
-
-getter HTMLAnchorElement::charset();
-setter HTMLAnchorElement::charset();
-
-getter HTMLAnchorElement::coords();
-setter HTMLAnchorElement::coords();
-
-getter HTMLAnchorElement::hreflang();
-setter HTMLAnchorElement::hreflang();
-
-getter HTMLAnchorElement::name();
-setter HTMLAnchorElement::name();
-
-getter HTMLAnchorElement::rel();
-setter HTMLAnchorElement::rel();
-
-getter HTMLAnchorElement::rev();
-setter HTMLAnchorElement::rev();
-
-getter HTMLAnchorElement::shape();
-setter HTMLAnchorElement::shape();
-
-getter HTMLAnchorElement::target();
-setter HTMLAnchorElement::target();
-
-
-
-
diff --git a/javascript/duktape/HTMLAppletElement.bnd b/javascript/duktape/HTMLAppletElement.bnd
deleted file mode 100644
index 8bf3ff2f7..000000000
--- a/javascript/duktape/HTMLAppletElement.bnd
+++ /dev/null
@@ -1,30 +0,0 @@
-/* HTML applet element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLAppletElement(struct dom_html_element *html_applet_element::html_element);
-
-getter HTMLAppletElement::align();
-setter HTMLAppletElement::align();
-getter HTMLAppletElement::alt();
-setter HTMLAppletElement::alt();
-getter HTMLAppletElement::archive();
-setter HTMLAppletElement::archive();
-getter HTMLAppletElement::codeBase();
-setter HTMLAppletElement::codeBase();
-getter HTMLAppletElement::code();
-setter HTMLAppletElement::code();
-getter HTMLAppletElement::height();
-setter HTMLAppletElement::height();
-getter HTMLAppletElement::name();
-setter HTMLAppletElement::name();
-getter HTMLAppletElement::object();
-setter HTMLAppletElement::object();
-getter HTMLAppletElement::width();
-setter HTMLAppletElement::width();
diff --git a/javascript/duktape/HTMLAreaElement.bnd b/javascript/duktape/HTMLAreaElement.bnd
deleted file mode 100644
index b6c17031c..000000000
--- a/javascript/duktape/HTMLAreaElement.bnd
+++ /dev/null
@@ -1,26 +0,0 @@
-/* HTML area element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLAreaElement(struct dom_html_element *html_area_element::html_element);
-
-getter HTMLAreaElement::alt();
-setter HTMLAreaElement::alt();
-
-getter HTMLAreaElement::coords();
-setter HTMLAreaElement::coords();
-
-getter HTMLAreaElement::noHref();
-setter HTMLAreaElement::noHref();
-
-getter HTMLAreaElement::shape();
-setter HTMLAreaElement::shape();
-
-getter HTMLAreaElement::target();
-setter HTMLAreaElement::target();
diff --git a/javascript/duktape/HTMLBRElement.bnd b/javascript/duktape/HTMLBRElement.bnd
deleted file mode 100644
index 3b44b9777..000000000
--- a/javascript/duktape/HTMLBRElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML br element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLBRElement(struct dom_html_element *html_br_element::html_element);
-
-getter HTMLBRElement::clear();
-setter HTMLBRElement::clear();
diff --git a/javascript/duktape/HTMLBaseElement.bnd b/javascript/duktape/HTMLBaseElement.bnd
deleted file mode 100644
index 143aefd36..000000000
--- a/javascript/duktape/HTMLBaseElement.bnd
+++ /dev/null
@@ -1,17 +0,0 @@
-/* HTML base element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLBaseElement(struct dom_html_element *html_base_element::html_element);
-
-getter HTMLBaseElement::href();
-setter HTMLBaseElement::href();
-
-getter HTMLBaseElement::target();
-setter HTMLBaseElement::target();
diff --git a/javascript/duktape/HTMLBodyElement.bnd b/javascript/duktape/HTMLBodyElement.bnd
deleted file mode 100644
index a283f897c..000000000
--- a/javascript/duktape/HTMLBodyElement.bnd
+++ /dev/null
@@ -1,24 +0,0 @@
-/* HTML body element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLBodyElement(struct dom_html_element *html_body_element::html_element);
-
-getter HTMLBodyElement::aLink();
-setter HTMLBodyElement::aLink();
-getter HTMLBodyElement::background();
-setter HTMLBodyElement::background();
-getter HTMLBodyElement::bgColor();
-setter HTMLBodyElement::bgColor();
-getter HTMLBodyElement::link();
-setter HTMLBodyElement::link();
-getter HTMLBodyElement::text();
-setter HTMLBodyElement::text();
-getter HTMLBodyElement::vLink();
-setter HTMLBodyElement::vLink();
diff --git a/javascript/duktape/HTMLButtonElement.bnd b/javascript/duktape/HTMLButtonElement.bnd
deleted file mode 100644
index 53431aa04..000000000
--- a/javascript/duktape/HTMLButtonElement.bnd
+++ /dev/null
@@ -1,18 +0,0 @@
-/* HTML button element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLButtonElement(struct dom_html_element *html_button_element::html_element);
-
-getter HTMLButtonElement::disabled();
-setter HTMLButtonElement::disabled();
-getter HTMLButtonElement::name();
-setter HTMLButtonElement::name();
-getter HTMLButtonElement::value();
-setter HTMLButtonElement::value();
diff --git a/javascript/duktape/HTMLCollection.bnd b/javascript/duktape/HTMLCollection.bnd
deleted file mode 100644
index 2ffe7027b..000000000
--- a/javascript/duktape/HTMLCollection.bnd
+++ /dev/null
@@ -1,24 +0,0 @@
-/* HTMLCollection binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class HTMLCollection {
- private struct dom_html_collection *coll;
-};
-
-init HTMLCollection(struct dom_html_collection *coll)
-%{
- priv->coll = coll;
- dom_html_collection_ref(coll);
-%}
-
-fini HTMLCollection()
-%{
- dom_html_collection_unref(priv->coll);
-%}
diff --git a/javascript/duktape/HTMLDivElement.bnd b/javascript/duktape/HTMLDivElement.bnd
deleted file mode 100644
index 759e34d96..000000000
--- a/javascript/duktape/HTMLDivElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML div element binding using duktape and libdom
- *
- * Copyright 2015 Michael Drake <tlsa@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLDivElement(struct dom_html_element *html_div_element::html_element);
-
-getter HTMLDivElement::align();
-setter HTMLDivElement::align();
diff --git a/javascript/duktape/HTMLElement.bnd b/javascript/duktape/HTMLElement.bnd
deleted file mode 100644
index b3de9c8fe..000000000
--- a/javascript/duktape/HTMLElement.bnd
+++ /dev/null
@@ -1,162 +0,0 @@
-/* HTML element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-prologue HTMLElement()
-%{
-#include <utils/corestrings.h>
-#define HANDLER_MAGIC MAGIC(HANDLER_MAP)
-%}
-
-init HTMLElement(struct dom_html_element *html_element::element);
-
-getter HTMLElement::dir();
-setter HTMLElement::dir();
-
-getter HTMLElement::lang();
-setter HTMLElement::lang();
-
-getter HTMLElement::title();
-setter HTMLElement::title();
-
-getter HTMLElement::onchange();
-setter HTMLElement::onchange();
-
-setter HTMLElement::onclick();
-getter HTMLElement::onclick();
-
-getter HTMLElement::onabort();
-setter HTMLElement::onabort();
-getter HTMLElement::onautocompleteerror();
-setter HTMLElement::onautocompleteerror();
-getter HTMLElement::onautocomplete();
-setter HTMLElement::onautocomplete();
-getter HTMLElement::onblur();
-setter HTMLElement::onblur();
-getter HTMLElement::oncancel();
-setter HTMLElement::oncancel();
-getter HTMLElement::oncanplaythrough();
-setter HTMLElement::oncanplaythrough();
-getter HTMLElement::oncanplay();
-setter HTMLElement::oncanplay();
-getter HTMLElement::onclose();
-setter HTMLElement::onclose();
-getter HTMLElement::oncontextmenu();
-setter HTMLElement::oncontextmenu();
-getter HTMLElement::oncuechange();
-setter HTMLElement::oncuechange();
-getter HTMLElement::ondblclick();
-setter HTMLElement::ondblclick();
-getter HTMLElement::ondragend();
-setter HTMLElement::ondragend();
-getter HTMLElement::ondragenter();
-setter HTMLElement::ondragenter();
-getter HTMLElement::ondragexit();
-setter HTMLElement::ondragexit();
-getter HTMLElement::ondragleave();
-setter HTMLElement::ondragleave();
-getter HTMLElement::ondragover();
-setter HTMLElement::ondragover();
-getter HTMLElement::ondragstart();
-setter HTMLElement::ondragstart();
-getter HTMLElement::ondrag();
-setter HTMLElement::ondrag();
-getter HTMLElement::ondrop();
-setter HTMLElement::ondrop();
-getter HTMLElement::ondurationchange();
-setter HTMLElement::ondurationchange();
-getter HTMLElement::onemptied();
-setter HTMLElement::onemptied();
-getter HTMLElement::onended();
-setter HTMLElement::onended();
-getter HTMLElement::onfocus();
-setter HTMLElement::onfocus();
-getter HTMLElement::oninput();
-setter HTMLElement::oninput();
-getter HTMLElement::oninvalid();
-setter HTMLElement::oninvalid();
-getter HTMLElement::onkeydown();
-setter HTMLElement::onkeydown();
-getter HTMLElement::onkeypress();
-setter HTMLElement::onkeypress();
-getter HTMLElement::onkeyup();
-setter HTMLElement::onkeyup();
-getter HTMLElement::onloadeddata();
-setter HTMLElement::onloadeddata();
-getter HTMLElement::onloadedmetadata();
-setter HTMLElement::onloadedmetadata();
-getter HTMLElement::onloadstart();
-setter HTMLElement::onloadstart();
-getter HTMLElement::onload();
-setter HTMLElement::onload();
-getter HTMLElement::onmousedown();
-setter HTMLElement::onmousedown();
-getter HTMLElement::onmouseenter();
-setter HTMLElement::onmouseenter();
-getter HTMLElement::onmouseleave();
-setter HTMLElement::onmouseleave();
-getter HTMLElement::onmousemove();
-setter HTMLElement::onmousemove();
-getter HTMLElement::onmouseout();
-setter HTMLElement::onmouseout();
-getter HTMLElement::onmouseover();
-setter HTMLElement::onmouseover();
-getter HTMLElement::onmouseup();
-setter HTMLElement::onmouseup();
-getter HTMLElement::onpause();
-setter HTMLElement::onpause();
-getter HTMLElement::onplaying();
-setter HTMLElement::onplaying();
-getter HTMLElement::onplay();
-setter HTMLElement::onplay();
-getter HTMLElement::onprogress();
-setter HTMLElement::onprogress();
-getter HTMLElement::onratechange();
-setter HTMLElement::onratechange();
-getter HTMLElement::onreset();
-setter HTMLElement::onreset();
-getter HTMLElement::onresize();
-setter HTMLElement::onresize();
-getter HTMLElement::onscroll();
-setter HTMLElement::onscroll();
-getter HTMLElement::onseeked();
-setter HTMLElement::onseeked();
-getter HTMLElement::onseeking();
-setter HTMLElement::onseeking();
-getter HTMLElement::onselect();
-setter HTMLElement::onselect();
-getter HTMLElement::onshow();
-setter HTMLElement::onshow();
-getter HTMLElement::onsort();
-setter HTMLElement::onsort();
-getter HTMLElement::onstalled();
-setter HTMLElement::onstalled();
-getter HTMLElement::onsubmit();
-setter HTMLElement::onsubmit();
-getter HTMLElement::onsuspend();
-setter HTMLElement::onsuspend();
-getter HTMLElement::ontimeupdate();
-setter HTMLElement::ontimeupdate();
-getter HTMLElement::ontoggle();
-setter HTMLElement::ontoggle();
-getter HTMLElement::onvolumechange();
-setter HTMLElement::onvolumechange();
-getter HTMLElement::onwaiting();
-setter HTMLElement::onwaiting();
-getter HTMLElement::onwheel();
-setter HTMLElement::onwheel();
-
-getter HTMLElement::style()
-%{
- /* Minimal implementation to avoid infinite-loop in Modernizr (c.f. #2413) */
- if (dukky_create_object(ctx, PROTO_NAME(CSSSTYLEDECLARATION), 0) != DUK_EXEC_SUCCESS) {
- return 0;
- }
- return 1;
-%}
diff --git a/javascript/duktape/HTMLFontElement.bnd b/javascript/duktape/HTMLFontElement.bnd
deleted file mode 100644
index e648a72e1..000000000
--- a/javascript/duktape/HTMLFontElement.bnd
+++ /dev/null
@@ -1,20 +0,0 @@
-/* HTML font element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLFontElement(struct dom_html_element *html_font_element::html_element);
-
-getter HTMLFontElement::color();
-setter HTMLFontElement::color();
-
-getter HTMLFontElement::face();
-setter HTMLFontElement::face();
-
-getter HTMLFontElement::size();
-setter HTMLFontElement::size();
diff --git a/javascript/duktape/HTMLFormElement.bnd b/javascript/duktape/HTMLFormElement.bnd
deleted file mode 100644
index 3906cf0b3..000000000
--- a/javascript/duktape/HTMLFormElement.bnd
+++ /dev/null
@@ -1,26 +0,0 @@
-/* HTML form element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLFormElement(struct dom_html_element *html_form_element::html_element);
-
-getter HTMLFormElement::acceptCharset();
-setter HTMLFormElement::acceptCharset();
-
-getter HTMLFormElement::action();
-setter HTMLFormElement::action();
-
-getter HTMLFormElement::enctype();
-setter HTMLFormElement::enctype();
-
-getter HTMLFormElement::method();
-setter HTMLFormElement::method();
-
-getter HTMLFormElement::target();
-setter HTMLFormElement::target();
diff --git a/javascript/duktape/HTMLFrameElement.bnd b/javascript/duktape/HTMLFrameElement.bnd
deleted file mode 100644
index ee5cfe3d0..000000000
--- a/javascript/duktape/HTMLFrameElement.bnd
+++ /dev/null
@@ -1,35 +0,0 @@
-/* HTML frame element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLFrameElement(struct dom_html_element *html_frame_element::html_element);
-
-getter HTMLFrameElement::frameBorder();
-setter HTMLFrameElement::frameBorder();
-
-getter HTMLFrameElement::longDesc();
-setter HTMLFrameElement::longDesc();
-
-getter HTMLFrameElement::marginHeight();
-setter HTMLFrameElement::marginHeight();
-
-getter HTMLFrameElement::marginWidth();
-setter HTMLFrameElement::marginWidth();
-
-getter HTMLFrameElement::name();
-setter HTMLFrameElement::name();
-
-getter HTMLFrameElement::noResize();
-setter HTMLFrameElement::noResize();
-
-getter HTMLFrameElement::scrolling();
-setter HTMLFrameElement::scrolling();
-
-getter HTMLFrameElement::src();
-setter HTMLFrameElement::src();
diff --git a/javascript/duktape/HTMLFrameSetElement.bnd b/javascript/duktape/HTMLFrameSetElement.bnd
deleted file mode 100644
index cc66e93d8..000000000
--- a/javascript/duktape/HTMLFrameSetElement.bnd
+++ /dev/null
@@ -1,17 +0,0 @@
-/* HTML frame set element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLFrameSetElement(struct dom_html_element *html_frame_set_element::html_element);
-
-getter HTMLFrameSetElement::cols();
-setter HTMLFrameSetElement::cols();
-
-getter HTMLFrameSetElement::rows();
-setter HTMLFrameSetElement::rows();
diff --git a/javascript/duktape/HTMLHRElement.bnd b/javascript/duktape/HTMLHRElement.bnd
deleted file mode 100644
index 421ec499b..000000000
--- a/javascript/duktape/HTMLHRElement.bnd
+++ /dev/null
@@ -1,24 +0,0 @@
-/* HTML hr element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLHRElement(struct dom_html_element *html_hr_element::html_element);
-
-getter HTMLHRElement::noShade();
-setter HTMLHRElement::noShade();
-
-getter HTMLHRElement::align();
-setter HTMLHRElement::align();
-
-getter HTMLHRElement::size();
-setter HTMLHRElement::size();
-
-getter HTMLHRElement::width();
-setter HTMLHRElement::width();
-
diff --git a/javascript/duktape/HTMLHTMLElement.bnd b/javascript/duktape/HTMLHTMLElement.bnd
deleted file mode 100644
index 01697d860..000000000
--- a/javascript/duktape/HTMLHTMLElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML html element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLHtmlElement(struct dom_html_element *html_html_element::html_element);
-
-getter HTMLHtmlElement::version();
-setter HTMLHtmlElement::version();
diff --git a/javascript/duktape/HTMLHeadingElement.bnd b/javascript/duktape/HTMLHeadingElement.bnd
deleted file mode 100644
index be51223c1..000000000
--- a/javascript/duktape/HTMLHeadingElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML heading element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLHeadingElement(struct dom_html_element *html_heading_element::html_element);
-
-getter HTMLHeadingElement::align();
-setter HTMLHeadingElement::align();
diff --git a/javascript/duktape/HTMLIFrameElement.bnd b/javascript/duktape/HTMLIFrameElement.bnd
deleted file mode 100644
index 64353769c..000000000
--- a/javascript/duktape/HTMLIFrameElement.bnd
+++ /dev/null
@@ -1,41 +0,0 @@
-/* HTML I frame element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLIFrameElement(struct dom_html_element *html_iframe_element::html_element);
-
-getter HTMLIFrameElement::align();
-setter HTMLIFrameElement::align();
-
-getter HTMLIFrameElement::frameBorder();
-setter HTMLIFrameElement::frameBorder();
-
-getter HTMLIFrameElement::height();
-setter HTMLIFrameElement::height();
-
-getter HTMLIFrameElement::longDesc();
-setter HTMLIFrameElement::longDesc();
-
-getter HTMLIFrameElement::marginHeight();
-setter HTMLIFrameElement::marginHeight();
-
-getter HTMLIFrameElement::marginWidth();
-setter HTMLIFrameElement::marginWidth();
-
-getter HTMLIFrameElement::name();
-setter HTMLIFrameElement::name();
-
-getter HTMLIFrameElement::scrolling();
-setter HTMLIFrameElement::scrolling();
-
-getter HTMLIFrameElement::src();
-setter HTMLIFrameElement::src();
-
-getter HTMLIFrameElement::width();
-setter HTMLIFrameElement::width();
diff --git a/javascript/duktape/HTMLImageElement.bnd b/javascript/duktape/HTMLImageElement.bnd
deleted file mode 100644
index 96b35b6f8..000000000
--- a/javascript/duktape/HTMLImageElement.bnd
+++ /dev/null
@@ -1,47 +0,0 @@
-/* HTML image element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLImageElement(struct dom_html_element *html_image_element::html_element);
-
-getter HTMLImageElement::align();
-setter HTMLImageElement::align();
-
-getter HTMLImageElement::alt();
-setter HTMLImageElement::alt();
-
-getter HTMLImageElement::border();
-setter HTMLImageElement::border();
-
-getter HTMLImageElement::isMap();
-setter HTMLImageElement::isMap();
-
-getter HTMLImageElement::longDesc();
-setter HTMLImageElement::longDesc();
-
-getter HTMLImageElement::name();
-setter HTMLImageElement::name();
-
-getter HTMLImageElement::src();
-setter HTMLImageElement::src();
-
-getter HTMLImageElement::useMap();
-setter HTMLImageElement::useMap();
-
-getter HTMLImageElement::height();
-setter HTMLImageElement::height();
-
-getter HTMLImageElement::hspace();
-setter HTMLImageElement::hspace();
-
-getter HTMLImageElement::vspace();
-setter HTMLImageElement::vspace();
-
-getter HTMLImageElement::width();
-setter HTMLImageElement::width();
diff --git a/javascript/duktape/HTMLInputElement.bnd b/javascript/duktape/HTMLInputElement.bnd
deleted file mode 100644
index 23645d0cd..000000000
--- a/javascript/duktape/HTMLInputElement.bnd
+++ /dev/null
@@ -1,64 +0,0 @@
-/* HTML input element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLInputElement(struct dom_html_element *html_input_element::html_element);
-
-getter HTMLInputElement::accept();
-setter HTMLInputElement::accept();
-
-getter HTMLInputElement::align();
-setter HTMLInputElement::align();
-
-getter HTMLInputElement::alt();
-setter HTMLInputElement::alt();
-
-getter HTMLInputElement::checked();
-setter HTMLInputElement::checked();
-
-getter HTMLInputElement::defaultChecked();
-setter HTMLInputElement::defaultChecked();
-
-getter HTMLInputElement::defaultValue();
-setter HTMLInputElement::defaultValue();
-
-getter HTMLInputElement::disabled();
-setter HTMLInputElement::disabled();
-
-getter HTMLInputElement::name();
-setter HTMLInputElement::name();
-
-getter HTMLInputElement::readOnly();
-setter HTMLInputElement::readOnly();
-
-getter HTMLInputElement::src();
-setter HTMLInputElement::src();
-
-getter HTMLInputElement::useMap();
-setter HTMLInputElement::useMap();
-
-getter HTMLInputElement::valueAsNumber();
-setter HTMLInputElement::valueAsNumber();
-
-getter HTMLInputElement::valueHigh();
-setter HTMLInputElement::valueHigh();
-
-getter HTMLInputElement::valueLow();
-setter HTMLInputElement::valueLow();
-
-getter HTMLInputElement::value();
-setter HTMLInputElement::value();
-
-getter HTMLInputElement::maxLength();
-setter HTMLInputElement::maxLength();
-
-getter HTMLInputElement::size();
-setter HTMLInputElement::size();
-
-getter HTMLInputElement::type();
diff --git a/javascript/duktape/HTMLLIElement.bnd b/javascript/duktape/HTMLLIElement.bnd
deleted file mode 100644
index a585693c0..000000000
--- a/javascript/duktape/HTMLLIElement.bnd
+++ /dev/null
@@ -1,17 +0,0 @@
-/* HTML li element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLLIElement(struct dom_html_element *html_li_element::html_element);
-
-getter HTMLLIElement::type();
-setter HTMLLIElement::type();
-
-getter HTMLLIElement::value();
-setter HTMLLIElement::value();
diff --git a/javascript/duktape/HTMLLabelElement.bnd b/javascript/duktape/HTMLLabelElement.bnd
deleted file mode 100644
index 018f798bd..000000000
--- a/javascript/duktape/HTMLLabelElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML label element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLLabelElement(struct dom_html_element *html_label_element::html_element);
-
-getter HTMLLabelElement::htmlFor();
-setter HTMLLabelElement::htmlFor();
diff --git a/javascript/duktape/HTMLLegendElement.bnd b/javascript/duktape/HTMLLegendElement.bnd
deleted file mode 100644
index 1bb95a94a..000000000
--- a/javascript/duktape/HTMLLegendElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML legend element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLLegendElement(struct dom_html_element *html_legend_element::html_element);
-
-getter HTMLLegendElement::align();
-setter HTMLLegendElement::align();
diff --git a/javascript/duktape/HTMLLinkElement.bnd b/javascript/duktape/HTMLLinkElement.bnd
deleted file mode 100644
index b215d76c0..000000000
--- a/javascript/duktape/HTMLLinkElement.bnd
+++ /dev/null
@@ -1,35 +0,0 @@
-/* HTML link element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLLinkElement(struct dom_html_element *html_link_element::html_element);
-
-getter HTMLLinkElement::charset();
-setter HTMLLinkElement::charset();
-
-getter HTMLLinkElement::hreflang();
-setter HTMLLinkElement::hreflang();
-
-getter HTMLLinkElement::href();
-setter HTMLLinkElement::href();
-
-getter HTMLLinkElement::media();
-setter HTMLLinkElement::media();
-
-getter HTMLLinkElement::rel();
-setter HTMLLinkElement::rel();
-
-getter HTMLLinkElement::rev();
-setter HTMLLinkElement::rev();
-
-getter HTMLLinkElement::target();
-setter HTMLLinkElement::target();
-
-getter HTMLLinkElement::type();
-setter HTMLLinkElement::type();
diff --git a/javascript/duktape/HTMLMapElement.bnd b/javascript/duktape/HTMLMapElement.bnd
deleted file mode 100644
index 0603f6f81..000000000
--- a/javascript/duktape/HTMLMapElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML map element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLMapElement(struct dom_html_element *html_map_element::html_element);
-
-getter HTMLMapElement::name();
-setter HTMLMapElement::name();
diff --git a/javascript/duktape/HTMLMarqueeElement.bnd b/javascript/duktape/HTMLMarqueeElement.bnd
deleted file mode 100644
index 16fbdc82c..000000000
--- a/javascript/duktape/HTMLMarqueeElement.bnd
+++ /dev/null
@@ -1,11 +0,0 @@
-/* HTML marquee element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLMarqueeElement(struct dom_html_element *html_marquee_element::html_element);
diff --git a/javascript/duktape/HTMLMenuElement.bnd b/javascript/duktape/HTMLMenuElement.bnd
deleted file mode 100644
index c7097b706..000000000
--- a/javascript/duktape/HTMLMenuElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML menu element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLMenuElement(struct dom_html_element *html_menu_element::html_element);
-
-getter HTMLMenuElement::compact();
-setter HTMLMenuElement::compact();
diff --git a/javascript/duktape/HTMLMetaElement.bnd b/javascript/duktape/HTMLMetaElement.bnd
deleted file mode 100644
index f9ecd4b07..000000000
--- a/javascript/duktape/HTMLMetaElement.bnd
+++ /dev/null
@@ -1,23 +0,0 @@
-/* HTML meta element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLMetaElement(struct dom_html_element *html_meta_element::html_element);
-
-getter HTMLMetaElement::content();
-setter HTMLMetaElement::content();
-
-getter HTMLMetaElement::httpEquiv();
-setter HTMLMetaElement::httpEquiv();
-
-getter HTMLMetaElement::name();
-setter HTMLMetaElement::name();
-
-getter HTMLMetaElement::scheme();
-setter HTMLMetaElement::scheme();
diff --git a/javascript/duktape/HTMLOListElement.bnd b/javascript/duktape/HTMLOListElement.bnd
deleted file mode 100644
index 8c12712a9..000000000
--- a/javascript/duktape/HTMLOListElement.bnd
+++ /dev/null
@@ -1,18 +0,0 @@
-/* HTML ol element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLOListElement(struct dom_html_element *html_o_list_element::html_element);
-
-getter HTMLOListElement::compact();
-setter HTMLOListElement::compact();
-getter HTMLOListElement::start();
-setter HTMLOListElement::start();
-getter HTMLOListElement::type();
-setter HTMLOListElement::type();
diff --git a/javascript/duktape/HTMLObjectElement.bnd b/javascript/duktape/HTMLObjectElement.bnd
deleted file mode 100644
index 2d07a7bb2..000000000
--- a/javascript/duktape/HTMLObjectElement.bnd
+++ /dev/null
@@ -1,54 +0,0 @@
-/* HTML object element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLObjectElement(struct dom_html_element *html_object_element::html_element);
-
-getter HTMLObjectElement::align();
-setter HTMLObjectElement::align();
-
-getter HTMLObjectElement::archive();
-setter HTMLObjectElement::archive();
-
-getter HTMLObjectElement::border();
-setter HTMLObjectElement::border();
-
-getter HTMLObjectElement::codeBase();
-setter HTMLObjectElement::codeBase();
-
-getter HTMLObjectElement::code();
-setter HTMLObjectElement::code();
-
-getter HTMLObjectElement::codeType();
-setter HTMLObjectElement::codeType();
-
-getter HTMLObjectElement::data();
-setter HTMLObjectElement::data();
-
-getter HTMLObjectElement::declare();
-setter HTMLObjectElement::declare();
-
-getter HTMLObjectElement::height();
-setter HTMLObjectElement::height();
-
-getter HTMLObjectElement::name();
-setter HTMLObjectElement::name();
-
-getter HTMLObjectElement::standby();
-setter HTMLObjectElement::standby();
-
-getter HTMLObjectElement::type();
-setter HTMLObjectElement::type();
-
-getter HTMLObjectElement::useMap();
-setter HTMLObjectElement::useMap();
-
-getter HTMLObjectElement::width();
-setter HTMLObjectElement::width();
-
diff --git a/javascript/duktape/HTMLOptionElement.bnd b/javascript/duktape/HTMLOptionElement.bnd
deleted file mode 100644
index d5094b7fa..000000000
--- a/javascript/duktape/HTMLOptionElement.bnd
+++ /dev/null
@@ -1,28 +0,0 @@
-/* HTML option element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLOptionElement(struct dom_html_element *html_option_element::html_element);
-
-getter HTMLOptionElement::defaultSelected();
-setter HTMLOptionElement::defaultSelected();
-
-getter HTMLOptionElement::disabled();
-setter HTMLOptionElement::disabled();
-
-getter HTMLOptionElement::label();
-setter HTMLOptionElement::label();
-
-getter HTMLOptionElement::selected();
-setter HTMLOptionElement::selected();
-
-getter HTMLOptionElement::text();
-
-getter HTMLOptionElement::value();
-setter HTMLOptionElement::value();
diff --git a/javascript/duktape/HTMLParagraphElement.bnd b/javascript/duktape/HTMLParagraphElement.bnd
deleted file mode 100644
index cc9ad83b5..000000000
--- a/javascript/duktape/HTMLParagraphElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML paragraph element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLParagraphElement(struct dom_html_element *html_paragraph_element::html_element);
-
-getter HTMLParagraphElement::align();
-setter HTMLParagraphElement::align();
diff --git a/javascript/duktape/HTMLParamElement.bnd b/javascript/duktape/HTMLParamElement.bnd
deleted file mode 100644
index 8fbe6fca6..000000000
--- a/javascript/duktape/HTMLParamElement.bnd
+++ /dev/null
@@ -1,23 +0,0 @@
-/* HTML param element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLParamElement(struct dom_html_element *html_param_element::html_element);
-
-getter HTMLParamElement::name();
-setter HTMLParamElement::name();
-
-getter HTMLParamElement::type();
-setter HTMLParamElement::type();
-
-getter HTMLParamElement::value();
-setter HTMLParamElement::value();
-
-getter HTMLParamElement::valueType();
-setter HTMLParamElement::valueType();
diff --git a/javascript/duktape/HTMLPreElement.bnd b/javascript/duktape/HTMLPreElement.bnd
deleted file mode 100644
index 06f6a76a9..000000000
--- a/javascript/duktape/HTMLPreElement.bnd
+++ /dev/null
@@ -1,15 +0,0 @@
-/* HTML li element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLPreElement(struct dom_html_element *html_pre_element::html_element);
-
-getter HTMLPreElement::width();
-setter HTMLPreElement::width();
-
diff --git a/javascript/duktape/HTMLQuoteElement.bnd b/javascript/duktape/HTMLQuoteElement.bnd
deleted file mode 100644
index 9e62f5d78..000000000
--- a/javascript/duktape/HTMLQuoteElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML quote element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLQuoteElement(struct dom_html_element *html_quote_element::html_element);
-
-getter HTMLQuoteElement::cite();
-setter HTMLQuoteElement::cite();
diff --git a/javascript/duktape/HTMLScriptElement.bnd b/javascript/duktape/HTMLScriptElement.bnd
deleted file mode 100644
index b3b22665a..000000000
--- a/javascript/duktape/HTMLScriptElement.bnd
+++ /dev/null
@@ -1,32 +0,0 @@
-/* HTML script element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLScriptElement(struct dom_html_element *html_script_element::html_element);
-
-getter HTMLScriptElement::charset();
-setter HTMLScriptElement::charset();
-
-getter HTMLScriptElement::defer();
-setter HTMLScriptElement::defer();
-
-getter HTMLScriptElement::event();
-setter HTMLScriptElement::event();
-
-getter HTMLScriptElement::htmlFor();
-setter HTMLScriptElement::htmlFor();
-
-getter HTMLScriptElement::src();
-setter HTMLScriptElement::src();
-
-getter HTMLScriptElement::text();
-setter HTMLScriptElement::text();
-
-getter HTMLScriptElement::type();
-setter HTMLScriptElement::type();
diff --git a/javascript/duktape/HTMLSelectElement.bnd b/javascript/duktape/HTMLSelectElement.bnd
deleted file mode 100644
index 36a5d1da4..000000000
--- a/javascript/duktape/HTMLSelectElement.bnd
+++ /dev/null
@@ -1,26 +0,0 @@
-/* HTML select element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLSelectElement(struct dom_html_element *html_select_element::html_element);
-
-getter HTMLSelectElement::disabled();
-setter HTMLSelectElement::disabled();
-
-getter HTMLSelectElement::multiple();
-setter HTMLSelectElement::multiple();
-
-getter HTMLSelectElement::name();
-setter HTMLSelectElement::name();
-
-getter HTMLSelectElement::type();
-
-getter HTMLSelectElement::value();
-setter HTMLSelectElement::value();
-
diff --git a/javascript/duktape/HTMLStyleElement.bnd b/javascript/duktape/HTMLStyleElement.bnd
deleted file mode 100644
index 45100876f..000000000
--- a/javascript/duktape/HTMLStyleElement.bnd
+++ /dev/null
@@ -1,17 +0,0 @@
-/* HTML style element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLStyleElement(struct dom_html_element *html_style_element::html_element);
-
-getter HTMLStyleElement::media();
-setter HTMLStyleElement::media();
-
-getter HTMLStyleElement::type();
-setter HTMLStyleElement::type();
diff --git a/javascript/duktape/HTMLTableCaptionElement.bnd b/javascript/duktape/HTMLTableCaptionElement.bnd
deleted file mode 100644
index 75754ccac..000000000
--- a/javascript/duktape/HTMLTableCaptionElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML table caption element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableCaptionElement(struct dom_html_element *html_table_caption_element::html_element);
-
-getter HTMLTableCaptionElement::align();
-setter HTMLTableCaptionElement::align();
diff --git a/javascript/duktape/HTMLTableCellElement.bnd b/javascript/duktape/HTMLTableCellElement.bnd
deleted file mode 100644
index 7040344c3..000000000
--- a/javascript/duktape/HTMLTableCellElement.bnd
+++ /dev/null
@@ -1,46 +0,0 @@
-/* HTML table cell element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableCellElement(struct dom_html_element *html_table_cell_element::html_element);
-
-getter HTMLTableCellElement::align();
-setter HTMLTableCellElement::align();
-
-getter HTMLTableCellElement::axis();
-setter HTMLTableCellElement::axis();
-
-getter HTMLTableCellElement::bgColor();
-setter HTMLTableCellElement::bgColor();
-
-getter HTMLTableCellElement::chOff();
-setter HTMLTableCellElement::chOff();
-
-getter HTMLTableCellElement::ch();
-setter HTMLTableCellElement::ch();
-
-getter HTMLTableCellElement::height();
-setter HTMLTableCellElement::height();
-
-getter HTMLTableCellElement::noWrap();
-setter HTMLTableCellElement::noWrap();
-
-getter HTMLTableCellElement::vAlign();
-setter HTMLTableCellElement::vAlign();
-
-getter HTMLTableCellElement::width();
-setter HTMLTableCellElement::width();
-
-getter HTMLTableCellElement::cellIndex();
-
-getter HTMLTableCellElement::colSpan();
-setter HTMLTableCellElement::colSpan();
-
-getter HTMLTableCellElement::rowSpan();
-setter HTMLTableCellElement::rowSpan();
diff --git a/javascript/duktape/HTMLTableColElement.bnd b/javascript/duktape/HTMLTableColElement.bnd
deleted file mode 100644
index ec7a954de..000000000
--- a/javascript/duktape/HTMLTableColElement.bnd
+++ /dev/null
@@ -1,26 +0,0 @@
-/* HTML table col element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableColElement(struct dom_html_element *html_table_col_element::html_element);
-
-getter HTMLTableColElement::align();
-setter HTMLTableColElement::align();
-
-getter HTMLTableColElement::chOff();
-setter HTMLTableColElement::chOff();
-
-getter HTMLTableColElement::ch();
-setter HTMLTableColElement::ch();
-
-getter HTMLTableColElement::vAlign();
-setter HTMLTableColElement::vAlign();
-
-getter HTMLTableColElement::width();
-setter HTMLTableColElement::width();
diff --git a/javascript/duktape/HTMLTableElement.bnd b/javascript/duktape/HTMLTableElement.bnd
deleted file mode 100644
index cd6d35769..000000000
--- a/javascript/duktape/HTMLTableElement.bnd
+++ /dev/null
@@ -1,38 +0,0 @@
-/* HTML table element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableElement(struct dom_html_element *html_table_element::html_element);
-
-getter HTMLTableElement::align();
-setter HTMLTableElement::align();
-
-getter HTMLTableElement::bgColor();
-setter HTMLTableElement::bgColor();
-
-getter HTMLTableElement::border();
-setter HTMLTableElement::border();
-
-getter HTMLTableElement::cellPadding();
-setter HTMLTableElement::cellPadding();
-
-getter HTMLTableElement::cellSpacing();
-setter HTMLTableElement::cellSpacing();
-
-getter HTMLTableElement::frame();
-setter HTMLTableElement::frame();
-
-getter HTMLTableElement::rules();
-setter HTMLTableElement::rules();
-
-getter HTMLTableElement::summary();
-setter HTMLTableElement::summary();
-
-getter HTMLTableElement::width();
-setter HTMLTableElement::width();
diff --git a/javascript/duktape/HTMLTableRowElement.bnd b/javascript/duktape/HTMLTableRowElement.bnd
deleted file mode 100644
index f736817b0..000000000
--- a/javascript/duktape/HTMLTableRowElement.bnd
+++ /dev/null
@@ -1,30 +0,0 @@
-/* HTML table row element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableRowElement(struct dom_html_element *html_table_row_element::html_element);
-
-getter HTMLTableRowElement::align();
-setter HTMLTableRowElement::align();
-
-getter HTMLTableRowElement::bgColor();
-setter HTMLTableRowElement::bgColor();
-
-getter HTMLTableRowElement::chOff();
-setter HTMLTableRowElement::chOff();
-
-getter HTMLTableRowElement::ch();
-setter HTMLTableRowElement::ch();
-
-getter HTMLTableRowElement::vAlign();
-setter HTMLTableRowElement::vAlign();
-
-getter HTMLTableRowElement::rowIndex();
-
-getter HTMLTableRowElement::sectionRowIndex();
diff --git a/javascript/duktape/HTMLTableSectionElement.bnd b/javascript/duktape/HTMLTableSectionElement.bnd
deleted file mode 100644
index 276533b3b..000000000
--- a/javascript/duktape/HTMLTableSectionElement.bnd
+++ /dev/null
@@ -1,23 +0,0 @@
-/* HTML table section element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTableSectionElement(struct dom_html_element *html_table_section_element::html_element);
-
-getter HTMLTableSectionElement::align();
-setter HTMLTableSectionElement::align();
-
-getter HTMLTableSectionElement::chOff();
-setter HTMLTableSectionElement::chOff();
-
-getter HTMLTableSectionElement::ch();
-setter HTMLTableSectionElement::ch();
-
-getter HTMLTableSectionElement::vAlign();
-setter HTMLTableSectionElement::vAlign();
diff --git a/javascript/duktape/HTMLTextAreaElement.bnd b/javascript/duktape/HTMLTextAreaElement.bnd
deleted file mode 100644
index a0fc1bf7b..000000000
--- a/javascript/duktape/HTMLTextAreaElement.bnd
+++ /dev/null
@@ -1,30 +0,0 @@
-/* HTML text area element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTextAreaElement(struct dom_html_element *html_text_area_element::html_element);
-
-getter HTMLTextAreaElement::defaultValue();
-setter HTMLTextAreaElement::defaultValue();
-
-getter HTMLTextAreaElement::disabled();
-setter HTMLTextAreaElement::disabled();
-
-getter HTMLTextAreaElement::name();
-setter HTMLTextAreaElement::name();
-
-getter HTMLTextAreaElement::readOnly();
-setter HTMLTextAreaElement::readOnly();
-
-getter HTMLTextAreaElement::type();
-
-getter HTMLTextAreaElement::value();
-setter HTMLTextAreaElement::value();
-
-
diff --git a/javascript/duktape/HTMLTitleElement.bnd b/javascript/duktape/HTMLTitleElement.bnd
deleted file mode 100644
index dee1c0749..000000000
--- a/javascript/duktape/HTMLTitleElement.bnd
+++ /dev/null
@@ -1,14 +0,0 @@
-/* HTML title element binding using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-init HTMLTitleElement(struct dom_html_element *html_title_element::html_element);
-
-getter HTMLTitleElement::text();
-setter HTMLTitleElement::text();
diff --git a/javascript/duktape/Location.bnd b/javascript/duktape/Location.bnd
deleted file mode 100644
index ca7e90509..000000000
--- a/javascript/duktape/Location.bnd
+++ /dev/null
@@ -1,353 +0,0 @@
-/* Location binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- * Copyright 2015 Daniel Silverstone <dsilvers@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Location {
- private nsurl *url;
-};
-
-prologue Location()
-%{
-#include "netsurf/browser_window.h"
-%}
-
-init Location(nsurl *url)
-%{
- priv->url = url;
- nsurl_ref(url);
-%}
-
-fini Location()
-%{
- nsurl_unref(priv->url);
-%}
-
-method Location::reload()
-%{
- /* retrieve the private data from the root object (window) */
- duk_push_global_object(ctx);
- duk_get_prop_string(ctx, -1, PRIVATE_MAGIC);
- window_private_t *priv_win = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- if (priv_win->win != NULL) {
- browser_window_reload(priv_win->win, false);
- } else {
- LOG("failed to get browser context");
- }
- return 0;
-%}
-
-method Location::assign()
-%{
- /* retrieve the private data from the root object (window) */
- duk_push_global_object(ctx);
- duk_get_prop_string(ctx, -1, PRIVATE_MAGIC);
- window_private_t *priv_win = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- if (priv_win == NULL || priv_win->win == NULL) {
- LOG("failed to get browser context");
- return 0;
- }
-
- nsurl *joined;
- duk_size_t slen;
- const char *url = duk_safe_to_lstring(ctx, 0, &slen);
-
- nsurl_join(priv->url, url, &joined);
- browser_window_navigate(priv_win->win,
- joined,
- NULL,
- BW_NAVIGATE_HISTORY,
- NULL,
- NULL,
- NULL);
- nsurl_unref(joined);
- return 0;
-%}
-
-method Location::replace()
-%{
- /* retrieve the private data from the root object (window) */
- duk_push_global_object(ctx);
- duk_get_prop_string(ctx, -1, PRIVATE_MAGIC);
- window_private_t *priv_win = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- if (priv_win == NULL || priv_win->win == NULL) {
- LOG("failed to get browser context");
- return 0;
- }
-
- nsurl *joined;
- duk_size_t slen;
- const char *url = duk_safe_to_lstring(ctx, 0, &slen);
-
- nsurl_join(priv->url, url, &joined);
- browser_window_navigate(priv_win->win,
- joined,
- NULL,
- BW_NAVIGATE_NONE,
- NULL,
- NULL,
- NULL);
- nsurl_unref(joined);
- return 0;
-%}
-
-getter Location::href()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_COMPLETE, &url_s, &url_l);
- if (url_s == NULL) {
- return 0;
- }
-
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-setter Location::href()
-%{
- /* retrieve the private data from the root object (window) */
- duk_push_global_object(ctx);
- duk_get_prop_string(ctx, -1, PRIVATE_MAGIC);
- window_private_t *priv_win = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- if (priv_win == NULL || priv_win->win == NULL) {
- LOG("failed to get browser context");
- return 0;
- }
-
- nsurl *joined;
- duk_size_t slen;
- const char *url = duk_safe_to_lstring(ctx, 0, &slen);
-
- nsurl_join(priv->url, url, &joined);
- browser_window_navigate(priv_win->win,
- joined,
- NULL,
- BW_NAVIGATE_HISTORY,
- NULL,
- NULL,
- NULL);
- nsurl_unref(joined);
- return 0;
-%}
-
-getter Location::origin()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_SCHEME | NSURL_HOST | NSURL_PORT, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-getter Location::protocol()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_SCHEME, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::username()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_USERNAME, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::password()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_PASSWORD, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::host()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_HOST, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::hostname()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_HOST, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-
-getter Location::port()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_PORT, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::pathname()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_PATH, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::search()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_QUERY, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
-getter Location::hash()
-%{
- char *url_s = NULL;
- size_t url_l;
-
- nsurl_get(priv->url, NSURL_FRAGMENT, &url_s, &url_l);
-
- /* if url_s is NULL duk_push_lstring pushes an empty string
- * which is correct for this API
- */
- duk_push_lstring(ctx, url_s, url_l);
-
- if (url_s != NULL) {
- free(url_s);
- }
-
- return 1;
-%}
-
-
diff --git a/javascript/duktape/Makefile b/javascript/duktape/Makefile
deleted file mode 100644
index 89353c340..000000000
--- a/javascript/duktape/Makefile
+++ /dev/null
@@ -1,40 +0,0 @@
-#
-# NetSurf javascript source file inclusion
-#
-# Included by javascript/Makefile
-#
-
-javascript/dukky.c: $(OBJROOT)/duktape/binding.h
-
-BINDINGS := $(wildcard javascript/duktape/*.bnd)
-
-# ensure genbind generates debugging files
-GBFLAGS+=-D
-
-$(OBJROOT)/duktape/binding.h $(OBJROOT)/duktape/Makefile: javascript/duktape/netsurf.bnd $(BINDINGS)
- $(Q)mkdir -p $(OBJROOT)/duktape
- $(VQ)echo " GENBIND: $<"
- $(Q)nsgenbind $(GBFLAGS) -I javascript/WebIDL $< $(OBJROOT)/duktape
- $(VQ)echo " GENBIND: completed"
-
-# create unimplemented report for doxygen
-Docs/UnimplementedJavascript.txt: javascript/duktape/netsurf.bnd $(BINDINGS)
- $(Q)mkdir -p $(OBJROOT)/duktape
- $(VQ)echo "/** \page unimplemented Unimplemented javascript bindings" > $@
- $(VQ)echo "This is a list of all the binding methods, getters and setters without an implementation in a binding." >> $@
- $(VQ)echo "" >> $@
- $(VQ)echo " GENBIND: $<"
- $(Q)nsgenbind $(GBFLAGS) -Wunimplemented -I javascript/WebIDL $< $(OBJROOT)/duktape 2>&1 >/dev/null | grep "Unimplemented" | cut -d' ' -f4- | sort -k 2 | awk '{print $$0"\\n" }' >> $@
- $(VQ)echo "*/" >> $@
-
-ifeq ($(filter $(MAKECMDGOALS),clean test coverage),)
--include $(OBJROOT)/duktape/Makefile
-endif
-
-S_JAVASCRIPT_BINDING:=$(addprefix $(OBJROOT)/duktape/,$(NSGENBIND_SOURCES))
-
-$(S_JAVASCRIPT_BINDING): $(BINDINGS)
-
-S_JAVASCRIPT += content.c duktape/dukky.c duktape/duktape.c
-
-CFLAGS += -DDUK_OPT_HAVE_CUSTOM_H
diff --git a/javascript/duktape/Navigator.bnd b/javascript/duktape/Navigator.bnd
deleted file mode 100644
index b18ca8e83..000000000
--- a/javascript/duktape/Navigator.bnd
+++ /dev/null
@@ -1,87 +0,0 @@
-/* Navigator binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-prologue Navigator()
-%{
-#include "utils/useragent.h"
-%}
-
-method Navigator::taintEnabled()
-%{
- duk_push_boolean(ctx, false);
- return 1;
-%}
-
-getter Navigator::appCodeName()
-%{
- duk_push_string(ctx, "Mozilla");
- return 1;
-%}
-
-getter Navigator::appName()
-%{
- duk_push_string(ctx, "Netscape");
- return 1;
-%}
-
-getter Navigator::appVersion()
-%{
- duk_push_string(ctx, "3.4");
- return 1;
-%}
-
-getter Navigator::platform()
-%{
- duk_push_string(ctx, NULL);
- return 1;
-%}
-
-getter Navigator::product()
-%{
- duk_push_string(ctx, "Gecko");
- return 1;
-%}
-
-getter Navigator::productSub()
-%{
- duk_push_string(ctx, "20100101");
- return 1;
-%}
-
-getter Navigator::vendor()
-%{
- duk_push_string(ctx, NULL);
- return 1;
-%}
-
-getter Navigator::vendorSub()
-%{
- duk_push_string(ctx, NULL);
- return 1;
-%}
-
-getter Navigator::cookieEnabled()
-%{
- duk_push_boolean(ctx, false);
- return 1;
-%}
-
-/* indicate there is no plugin for java installed */
-getter Navigator::javaEnabled()
-%{
- duk_push_boolean(ctx, false);
- return 1;
-%}
-
-getter Navigator::userAgent()
-%{
- duk_push_string(ctx, user_agent_string());
- return 1;
-%}
diff --git a/javascript/duktape/Node.bnd b/javascript/duktape/Node.bnd
deleted file mode 100644
index f237c876a..000000000
--- a/javascript/duktape/Node.bnd
+++ /dev/null
@@ -1,479 +0,0 @@
-/* Node binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Node {
- private dom_node *node;
-};
-
-init Node(struct dom_node *node)
-%{
- priv->node = node;
- dom_node_ref(node);
-%}
-
-fini Node()
-%{
- dom_node_unref(priv->node);
-%}
-
-getter Node::nodeType()
-%{
- dom_exception exc;
- dom_node_type ntype;
- exc = dom_node_get_node_type(priv->node, &ntype);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_uint(ctx, (duk_uint_t)ntype);
- return 1;
-%}
-
-getter Node::nodeName()
-%{
- dom_exception exc;
- dom_string *str = NULL;
- exc = dom_node_get_node_name(priv->node, &str);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_lstring(ctx, dom_string_data(str), dom_string_length(str));
- dom_string_unref(str);
- return 1;
-%}
-
-getter Node::baseURI()
-%{
- dom_exception exc;
- dom_string *base = NULL;
- exc = dom_node_get_base(priv->node, &base);
- if (exc != DOM_NO_ERR) return 0;
- assert(base != NULL);
- duk_push_lstring(ctx, dom_string_data(base), dom_string_length(base));
- dom_string_unref(base);
- return 1;
-%}
-
-getter Node::ownerDocument()
-%{
- dom_exception exc;
- dom_node *doc;
- exc = dom_node_get_owner_document(priv->node, &doc);
- if (exc != DOM_NO_ERR) return 0;
- if (doc == NULL) return 0;
- dukky_push_node(ctx, doc);
- dom_node_unref(doc);
- return 1;
-%}
-
-getter Node::parentNode()
-%{
- dom_exception exc;
- dom_node *pnode = NULL;
- exc = dom_node_get_parent_node(priv->node, &pnode);
- if (exc != DOM_NO_ERR) return 0;
- dukky_push_node(ctx, pnode);
- dom_node_unref(pnode);
- return 1;
-%}
-
-getter Node::parentElement()
-%{
- dom_exception exc;
- dom_node *pnode = NULL;
- dom_node_type ntype = DOM_NODE_TYPE_COUNT + 1;
- exc = dom_node_get_parent_node(priv->node, &pnode);
- if (exc != DOM_NO_ERR) return 0;
- if (pnode != NULL) {
- exc = dom_node_get_node_type(pnode, &ntype);
- if (exc != DOM_NO_ERR) { dom_node_unref(pnode); return 0; }
- }
- dukky_push_node(ctx, (ntype == DOM_ELEMENT_NODE) ? pnode : NULL);
- dom_node_unref(pnode);
- return 1;
-%}
-
-method Node::hasChildNodes()
-%{
- dom_exception exc;
- bool res;
- exc = dom_node_has_child_nodes(priv->node, &res);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_boolean(ctx, res);
- return 1;
-%}
-
-getter Node::childNodes()
-%{
- dom_exception exc;
- dom_nodelist *nlist = NULL;
- duk_set_top(ctx, 0);
- duk_push_this(ctx);
- duk_get_prop_string(ctx, 0, MAGIC(childNodes));
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- exc = dom_node_get_child_nodes(priv->node, &nlist);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_pointer(ctx, nlist);
- if (dukky_create_object(ctx, PROTO_NAME(NODELIST), 1) != DUK_EXEC_SUCCESS) {
- dom_nodelist_unref(nlist);
- return 0;
- }
- dom_nodelist_unref(nlist);
- duk_dup(ctx, -1);
- duk_put_prop_string(ctx, 0, MAGIC(childNodes));
- }
- return 1;
-%}
-
-getter Node::firstChild()
-%{
- dom_exception exc;
- dom_node *n;
- exc = dom_node_get_first_child(priv->node, &n);
- if (exc != DOM_NO_ERR) return 0;
- if (dukky_push_node(ctx, n) == false) {
- dom_node_unref(n);
- return 0;
- }
- dom_node_unref(n);
- return 1;
-%}
-
-getter Node::lastChild()
-%{
- dom_exception exc;
- dom_node *n;
- exc = dom_node_get_last_child(priv->node, &n);
- if (exc != DOM_NO_ERR) return 0;
- if (dukky_push_node(ctx, n) == false) {
- dom_node_unref(n);
- return 0;
- }
- dom_node_unref(n);
- return 1;
-%}
-
-getter Node::previousSibling()
-%{
- dom_exception exc;
- dom_node *n;
- exc = dom_node_get_previous_sibling(priv->node, &n);
- if (exc != DOM_NO_ERR) return 0;
- if (dukky_push_node(ctx, n) == false) {
- dom_node_unref(n);
- return 0;
- }
- dom_node_unref(n);
- return 1;
-%}
-
-getter Node::nextSibling()
-%{
- dom_exception exc;
- dom_node *n;
- exc = dom_node_get_next_sibling(priv->node, &n);
- if (exc != DOM_NO_ERR) return 0;
- if (dukky_push_node(ctx, n) == false) {
- dom_node_unref(n);
- return 0;
- }
- dom_node_unref(n);
- return 1;
-%}
-
-getter Node::nodeValue()
-%{
- dom_exception exc;
- dom_string *content;
-
- exc = dom_node_get_node_value(priv->node, &content);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- if (content != NULL) {
- duk_push_lstring(ctx, dom_string_data(content), dom_string_length(content));
- dom_string_unref(content);
- return 1;
- }
- return 0;
-%}
-
-setter Node::nodeValue()
-%{
- dom_exception exc;
- dom_string *content;
- duk_size_t slen;
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
- exc = dom_string_create((const uint8_t *)s, slen, &content);
- if (exc != DOM_NO_ERR) return 0;
- exc = dom_node_set_node_value(priv->node, content);
- dom_string_unref(content);
- return 0;
-%}
-
-getter Node::textContent()
-%{
- dom_exception exc;
- dom_string *content;
-
- exc = dom_node_get_text_content(priv->node, &content);
- if (exc != DOM_NO_ERR) {
- return 0;
- }
-
- if (content != NULL) {
- duk_push_lstring(ctx, dom_string_data(content), dom_string_length(content));
- dom_string_unref(content);
- return 1;
- }
- return 0;
-%}
-
-setter Node::textContent()
-%{
- dom_exception exc;
- dom_string *content;
- duk_size_t slen;
- const char *s = duk_safe_to_lstring(ctx, 0, &slen);
- exc = dom_string_create((const uint8_t *)s, slen, &content);
- if (exc != DOM_NO_ERR) return 0;
- exc = dom_node_set_text_content(priv->node, content);
- dom_string_unref(content);
- return 0;
-%}
-
-method Node::normalize()
-%{
- dom_exception exc;
- exc = dom_node_normalize(priv->node);
- if (exc != DOM_NO_ERR) return 0;
- return 0;
-%}
-
-method Node::cloneNode()
-%{
- dom_exception exc;
- bool deep;
- dom_node *clone;
-
- deep = duk_to_boolean(ctx, 0);
-
- exc = dom_node_clone_node(priv->node, deep, &clone);
- if (exc != DOM_NO_ERR) return 0;
- duk_set_top(ctx, 0);
- dukky_push_node(ctx, clone);
- dom_node_unref(clone);
- return 1;
-%}
-
-method Node::isEqualNode()
-%{
- dom_exception exc;
- bool result;
-
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- exc = dom_node_is_equal(priv->node, other->node, &result);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_boolean(ctx, result);
- return 1;
-%}
-
-method Node::compareDocumentPosition()
-%{
- dom_exception exc;
- uint16_t ret;
-
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- exc = dom_node_compare_document_position(priv->node, other->node,
- &ret);
-
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_uint(ctx, ret);
-
- return 1;
-%}
-
-method Node::contains()
-%{
- dom_exception exc;
- uint16_t ret;
-
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- /* Note that inclusive descendant says *IS* or *CONTAINED_BY* */
- if (priv->node == other->node) {
- duk_push_boolean(ctx, true);
- return 1;
- }
-
- exc = dom_node_compare_document_position(priv->node, other->node,
- &ret);
-
- if (exc != DOM_NO_ERR) return 0;
-
- duk_push_boolean(ctx, ret == DOM_DOCUMENT_POSITION_CONTAINED_BY);
-
- return 1;
-%}
-
-method Node::lookupPrefix()
-%{
- dom_exception exc;
- dom_string *ns, *pfx;
- duk_size_t size;
- const char *s = duk_safe_to_lstring(ctx, 0, &size);
- exc = dom_string_create((const uint8_t *)s, size, &ns);
- if (exc != DOM_NO_ERR) return 0;
- exc = dom_node_lookup_prefix(priv->node, ns, &pfx);
- dom_string_unref(ns);
- if (exc != DOM_NO_ERR) return 0;
- if (pfx == NULL) return 0;
- duk_push_lstring(ctx, dom_string_data(pfx), dom_string_length(pfx));
- dom_string_unref(pfx);
- return 0;
-%}
-
-method Node::lookupNamespaceURI()
-%{
- dom_exception exc;
- dom_string *ns, *pfx;
- duk_size_t size;
- const char *s = duk_safe_to_lstring(ctx, 0, &size);
- exc = dom_string_create((const uint8_t *)s, size, &pfx);
- if (exc != DOM_NO_ERR) return 0;
- exc = dom_node_lookup_namespace(priv->node, pfx, &ns);
- dom_string_unref(pfx);
- if (exc != DOM_NO_ERR) return 0;
- if (ns == NULL) return 0;
- duk_push_lstring(ctx, dom_string_data(ns), dom_string_length(ns));
- dom_string_unref(ns);
- return 0;
-%}
-
-
-method Node::isDefaultNamespace()
-%{
- dom_exception exc;
- dom_string *ns;
- duk_size_t size;
- const char *s = duk_safe_to_lstring(ctx, 0, &size);
- bool ret;
- exc = dom_string_create((const uint8_t *)s, size, &ns);
- if (exc != DOM_NO_ERR) return 0;
- exc = dom_node_is_default_namespace(priv->node, ns, &ret);
- dom_string_unref(ns);
- if (exc != DOM_NO_ERR) return 0;
- duk_push_boolean(ctx, ret);
- return 1;
-%}
-
-method Node::insertBefore()
-%{
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- dom_node *before = NULL;
-
- if (duk_get_top(ctx) == 2) {
- if (!dukky_instanceof(ctx, 1, PROTO_NAME(NODE))) return 0;
- duk_get_prop_string(ctx, 1, PRIVATE_MAGIC);
- node_private_t *another = duk_get_pointer(ctx, -1);
- before = another->node;
- duk_pop(ctx);
- }
-
- dom_exception err;
- dom_node *spare;
-
- err = dom_node_insert_before(priv->node, other->node, before, &spare);
- if (err != DOM_NO_ERR) return 0;
- dukky_push_node(ctx, spare);
- dom_node_unref(spare);
-
- return 1;
-%}
-
-method Node::appendChild()
-%{
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- dom_exception err;
- dom_node *spare;
-
- err = dom_node_append_child(priv->node, other->node, &spare);
- if (err != DOM_NO_ERR) return 0;
- dukky_push_node(ctx, spare);
- dom_node_unref(spare);
-
- return 1;
-%}
-
-method Node::replaceChild()
-%{
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- if (!dukky_instanceof(ctx, 1, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 1, PRIVATE_MAGIC);
- node_private_t *old = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- dom_exception err;
- dom_node *spare;
-
- err = dom_node_replace_child(priv->node, other->node, old->node, &spare);
- if (err != DOM_NO_ERR) return 0;
- dukky_push_node(ctx, spare);
- dom_node_unref(spare);
-
- return 1;
-%}
-
-method Node::removeChild()
-%{
- if (!dukky_instanceof(ctx, 0, PROTO_NAME(NODE))) return 0;
-
- duk_get_prop_string(ctx, 0, PRIVATE_MAGIC);
- node_private_t *other = duk_get_pointer(ctx, -1);
- duk_pop(ctx);
-
- dom_exception err;
- dom_node *spare;
-
- err = dom_node_remove_child(priv->node, other->node, &spare);
- if (err != DOM_NO_ERR) return 0;
- dukky_push_node(ctx, spare);
- dom_node_unref(spare);
-
- return 1;
-%}
diff --git a/javascript/duktape/NodeList.bnd b/javascript/duktape/NodeList.bnd
deleted file mode 100644
index 7ddf56d15..000000000
--- a/javascript/duktape/NodeList.bnd
+++ /dev/null
@@ -1,54 +0,0 @@
-/* NodeList binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class NodeList {
- private struct dom_nodelist *nodes;
-};
-
-init NodeList(struct dom_nodelist *nodes)
-%{
- priv->nodes = nodes;
- dom_nodelist_ref(nodes);
-%}
-
-fini NodeList()
-%{
- dom_nodelist_unref(priv->nodes);
-%}
-
-getter NodeList::length()
-%{
- dom_exception err;
- uint32_t len;
-
- err = dom_nodelist_get_length(priv->nodes, &len);
-
- if (err != DOM_NO_ERR) return 0; /* coerced to undefined */
-
- duk_push_uint(ctx, (duk_uint_t)len);
-
- return 1;
-%}
-
-method NodeList::item()
-%{
- unsigned long i = duk_to_uint(ctx, 0);
- dom_exception err;
- dom_node *node;
-
- err = dom_nodelist_item(priv->nodes, i, &node);
-
- if (err != DOM_NO_ERR) return 0; /* coerced to undefied */
-
- dukky_push_node(ctx, node);
- dom_node_unref(node);
-
- return 1;
-%}
diff --git a/javascript/duktape/Window.bnd b/javascript/duktape/Window.bnd
deleted file mode 100644
index 489587899..000000000
--- a/javascript/duktape/Window.bnd
+++ /dev/null
@@ -1,146 +0,0 @@
-/* Window binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-class Window {
- private struct browser_window * win;
- private struct html_content * htmlc;
- prologue %{
-#include "utils/nsurl.h"
-#include "netsurf/browser_window.h"
-#include "content/hlcache.h"
-#include "render/html.h"
-#include "render/html_internal.h"
-%};
-};
-
-init Window(struct browser_window *win, struct html_content *htmlc)
-%{
- /* element window */
- priv->win = win;
- priv->htmlc = htmlc;
- LOG("win=%p htmlc=%p", priv->win, priv->htmlc);
-
- LOG("URL is %s", nsurl_access(browser_window_get_url(priv->win)));
-%}
-
-prototype Window()
-%{
-#define EXPOSE(v) \
- duk_get_global_string(ctx, #v); \
- duk_put_prop_string(ctx, 0, #v)
- /* steal undefined */
- EXPOSE(undefined);
- EXPOSE(eval);
- EXPOSE(Object);
- EXPOSE(parseInt);
- EXPOSE(parseFloat);
- EXPOSE(Array);
- EXPOSE(Date);
- EXPOSE(RegExp);
- EXPOSE(Math);
- EXPOSE(Function);
- EXPOSE(Proxy);
- EXPOSE(String);
-#undef EXPOSE
-%}
-
-getter Window::document()
-%{
- JS_LOG("priv=%p", priv);
- dom_document *doc = priv->htmlc->document;
- dukky_push_node(ctx, (struct dom_node *)doc);
- return 1;
-%}
-
-getter Window::window()
-%{
- duk_push_this(ctx);
- return 1;
-%}
-
-getter Window::console()
-%{
- duk_push_this(ctx);
- duk_get_prop_string(ctx, -1, MAGIC(Console));
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- if (dukky_create_object(ctx, PROTO_NAME(CONSOLE), 0) != DUK_EXEC_SUCCESS) {
- duk_error(ctx, DUK_ERR_ERROR, "Unable to create console object");
- return 0;
- }
- duk_dup(ctx, -1);
- duk_put_prop_string(ctx, -3, MAGIC(Console));
- }
- return 1;
-%}
-
-getter Window::location()
-%{
- duk_push_this(ctx);
- duk_get_prop_string(ctx, -1, MAGIC(Location));
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
-
- duk_push_pointer(ctx, llcache_handle_get_url(priv->htmlc->base.llcache));
-
- if (dukky_create_object(ctx, PROTO_NAME(LOCATION), 1) != DUK_EXEC_SUCCESS) {
- duk_error(ctx, DUK_ERR_ERROR, "Unable to create location object");
- return 0;
- }
- duk_dup(ctx, -1);
- duk_put_prop_string(ctx, -3, MAGIC(Location));
- }
- return 1;
-%}
-
-getter Window::navigator()
-%{
- duk_push_this(ctx);
- duk_get_prop_string(ctx, -1, MAGIC(Navigator));
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
-
- if (dukky_create_object(ctx,
- PROTO_NAME(NAVIGATOR),
- 0) != DUK_EXEC_SUCCESS) {
- duk_error(ctx,
- DUK_ERR_ERROR,
- "Unable to create navigator object");
- return 0;
- }
- duk_dup(ctx, -1);
- duk_put_prop_string(ctx, -3, MAGIC(Navigator));
- }
- return 1;
-%}
-
-getter Window::name()
-%{
- const char *name;
- browser_window_get_name(priv->win, &name);
- duk_push_string(ctx, name);
- return 1;
-%}
-
-setter Window::name()
-%{
- const char *name;
- name = duk_to_string(ctx, -1);
- browser_window_set_name(priv->win, name);
- return 0;
-%}
-
-method Window::alert()
-%{
- duk_size_t msg_len;
- const char *msg = duk_safe_to_lstring(ctx, 0, &msg_len);
- LOG("JS ALERT: %*s", (int)msg_len, msg);
- return 0;
-%}
diff --git a/javascript/duktape/duk_config.h b/javascript/duktape/duk_config.h
deleted file mode 100644
index a3da70a3f..000000000
--- a/javascript/duktape/duk_config.h
+++ /dev/null
@@ -1,3753 +0,0 @@
-/*
- * duk_config.h configuration header generated by genconfig.py.
- *
- * Git commit: 83d557704ee63f68ab40b6fcb00995c9b3d6777c
- * Git describe: v1.5.0
- * Git branch: master
- *
- * Supported platforms:
- * - Mac OSX, iPhone, Darwin
- * - OpenBSD
- * - Generic BSD
- * - Atari ST TOS
- * - AmigaOS
- * - Windows
- * - Flashplayer (Crossbridge)
- * - QNX
- * - TI-Nspire
- * - Emscripten
- * - Linux
- * - Solaris
- * - Generic POSIX
- * - Cygwin
- * - Generic UNIX
- * - Generic fallback
- *
- * Supported architectures:
- * - x86
- * - x64
- * - x32
- * - ARM 32-bit
- * - ARM 64-bit
- * - MIPS 32-bit
- * - MIPS 64-bit
- * - PowerPC 32-bit
- * - PowerPC 64-bit
- * - SPARC 32-bit
- * - SPARC 64-bit
- * - SuperH
- * - Motorola 68k
- * - Emscripten
- * - Generic
- *
- * Supported compilers:
- * - Clang
- * - GCC
- * - MSVC
- * - Emscripten
- * - TinyC
- * - VBCC
- * - Bruce's C compiler
- * - Generic
- *
- */
-
-#if !defined(DUK_CONFIG_H_INCLUDED)
-#define DUK_CONFIG_H_INCLUDED
-
-/*
- * Intermediate helper defines
- */
-
-/* DLL build detection */
-#if defined(DUK_OPT_DLL_BUILD)
-#define DUK_F_DLL_BUILD
-#elif defined(DUK_OPT_NO_DLL_BUILD)
-#undef DUK_F_DLL_BUILD
-#else
-/* not configured for DLL build */
-#undef DUK_F_DLL_BUILD
-#endif
-
-/* Apple OSX, iOS */
-#if defined(__APPLE__)
-#define DUK_F_APPLE
-#endif
-
-/* OpenBSD */
-#if defined(__OpenBSD__) || defined(__OpenBSD)
-#define DUK_F_OPENBSD
-#endif
-
-/* NetBSD */
-#if defined(__NetBSD__) || defined(__NetBSD)
-#define DUK_F_NETBSD
-#endif
-
-/* FreeBSD */
-#if defined(__FreeBSD__) || defined(__FreeBSD)
-#define DUK_F_FREEBSD
-#endif
-
-/* BSD variant */
-#if defined(DUK_F_FREEBSD) || defined(DUK_F_NETBSD) || defined(DUK_F_OPENBSD) || \
- defined(__bsdi__) || defined(__DragonFly__)
-#define DUK_F_BSD
-#endif
-
-/* Atari ST TOS. __TOS__ defined by PureC. No platform define in VBCC
- * apparently, so to use with VBCC user must define __TOS__ manually.
- */
-#if defined(__TOS__)
-#define DUK_F_TOS
-#endif
-
-/* Motorola 68K. Not defined by VBCC, so user must define one of these
- * manually when using VBCC.
- */
-#if defined(__m68k__) || defined(M68000) || defined(__MC68K__)
-#define DUK_F_M68K
-#endif
-
-/* AmigaOS. Neither AMIGA nor __amigaos__ is defined on VBCC, so user must
- * define 'AMIGA' manually when using VBCC.
- */
-#if defined(AMIGA) || defined(__amigaos__)
-#define DUK_F_AMIGAOS
-#endif
-
-/* PowerPC */
-#if defined(__powerpc) || defined(__powerpc__) || defined(__PPC__)
-#define DUK_F_PPC
-#if defined(__PPC64__) || defined(__LP64__) || defined(_LP64)
-#define DUK_F_PPC64
-#else
-#define DUK_F_PPC32
-#endif
-#endif
-
-/* Windows, both 32-bit and 64-bit */
-#if defined(_WIN32) || defined(WIN32) || defined(_WIN64) || defined(WIN64) || \
- defined(__WIN32__) || defined(__TOS_WIN__) || defined(__WINDOWS__)
-#define DUK_F_WINDOWS
-#if defined(_WIN64) || defined(WIN64)
-#define DUK_F_WIN64
-#else
-#define DUK_F_WIN32
-#endif
-#endif
-
-/* Flash player (e.g. Crossbridge) */
-#if defined(__FLASHPLAYER__)
-#define DUK_F_FLASHPLAYER
-#endif
-
-/* QNX */
-#if defined(__QNX__)
-#define DUK_F_QNX
-#endif
-
-/* TI-Nspire (using Ndless) */
-#if defined(_TINSPIRE)
-#define DUK_F_TINSPIRE
-#endif
-
-/* Emscripten (provided explicitly by user), improve if possible */
-#if defined(EMSCRIPTEN)
-#define DUK_F_EMSCRIPTEN
-#endif
-
-/* BCC (Bruce's C compiler): this is a "torture target" for compilation */
-#if defined(__BCC__) || defined(__BCC_VERSION__)
-#define DUK_F_BCC
-#endif
-
-/* Linux */
-#if defined(__linux) || defined(__linux__) || defined(linux)
-#define DUK_F_LINUX
-#endif
-
-/* illumos / Solaris */
-#if defined(__sun) && defined(__SVR4)
-#define DUK_F_SUN
-#endif
-
-/* POSIX */
-#if defined(__posix)
-#define DUK_F_POSIX
-#endif
-
-/* Cygwin */
-#if defined(__CYGWIN__)
-#define DUK_F_CYGWIN
-#endif
-
-/* Generic Unix (includes Cygwin) */
-#if defined(__unix) || defined(__unix__) || defined(unix) || \
- defined(DUK_F_LINUX) || defined(DUK_F_BSD)
-#define DUK_F_UNIX
-#endif
-
-/* stdint.h not available */
-#if defined(DUK_F_WINDOWS) && defined(_MSC_VER)
-#if (_MSC_VER < 1700)
-/* VS2012+ has stdint.h, < VS2012 does not (but it's available for download). */
-#define DUK_F_NO_STDINT_H
-#endif
-#endif
-#if !defined(DUK_F_NO_STDINT_H) && (defined(DUK_F_TOS) || defined(DUK_F_BCC))
-#define DUK_F_NO_STDINT_H
-#endif
-
-/* C++ */
-#undef DUK_F_CPP
-#if defined(__cplusplus)
-#define DUK_F_CPP
-#endif
-
-/* Intel x86 (32-bit), x64 (64-bit) or x32 (64-bit but 32-bit pointers),
- * define only one of DUK_F_X86, DUK_F_X64, DUK_F_X32.
- * https://sites.google.com/site/x32abi/
- */
-#if defined(__amd64__) || defined(__amd64) || \
- defined(__x86_64__) || defined(__x86_64) || \
- defined(_M_X64) || defined(_M_AMD64)
-#if defined(__ILP32__) || defined(_ILP32)
-#define DUK_F_X32
-#else
-#define DUK_F_X64
-#endif
-#elif defined(i386) || defined(__i386) || defined(__i386__) || \
- defined(__i486__) || defined(__i586__) || defined(__i686__) || \
- defined(__IA32__) || defined(_M_IX86) || defined(__X86__) || \
- defined(_X86_) || defined(__THW_INTEL__) || defined(__I86__)
-#if defined(__LP64__) || defined(_LP64)
-/* This should not really happen, but would indicate x64. */
-#define DUK_F_X64
-#else
-#define DUK_F_X86
-#endif
-#endif
-
-/* ARM */
-#if defined(__arm__) || defined(__thumb__) || defined(_ARM) || defined(_M_ARM)
-#define DUK_F_ARM
-#if defined(__LP64__) || defined(_LP64) || defined(__arm64) || defined(__arm64__)
-#define DUK_F_ARM64
-#else
-#define DUK_F_ARM32
-#endif
-#endif
-
-/* MIPS. Related defines: __MIPSEB__, __MIPSEL__, __mips_isa_rev, __LP64__ */
-#if defined(__mips__) || defined(mips) || defined(_MIPS_ISA) || \
- defined(_R3000) || defined(_R4000) || defined(_R5900) || \
- defined(_MIPS_ISA_MIPS1) || defined(_MIPS_ISA_MIPS2) || \
- defined(_MIPS_ISA_MIPS3) || defined(_MIPS_ISA_MIPS4) || \
- defined(__mips) || defined(__MIPS__)
-#define DUK_F_MIPS
-#if defined(__LP64__) || defined(_LP64) || defined(__mips64) || \
- defined(__mips64__) || defined(__mips_n64)
-#define DUK_F_MIPS64
-#else
-#define DUK_F_MIPS32
-#endif
-#endif
-
-/* SPARC */
-#if defined(sparc) || defined(__sparc) || defined(__sparc__)
-#define DUK_F_SPARC
-#if defined(__LP64__) || defined(_LP64)
-#define DUK_F_SPARC64
-#else
-#define DUK_F_SPARC32
-#endif
-#endif
-
-/* SuperH */
-#if defined(__sh__) || \
- defined(__sh1__) || defined(__SH1__) || \
- defined(__sh2__) || defined(__SH2__) || \
- defined(__sh3__) || defined(__SH3__) || \
- defined(__sh4__) || defined(__SH4__) || \
- defined(__sh5__) || defined(__SH5__)
-#define DUK_F_SUPERH
-#endif
-
-/* Clang */
-#if defined(__clang__)
-#define DUK_F_CLANG
-#endif
-
-/* C99 or above */
-#undef DUK_F_C99
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
-#define DUK_F_C99
-#endif
-
-/* C++11 or above */
-#undef DUK_F_CPP11
-#if defined(__cplusplus) && (__cplusplus >= 201103L)
-#define DUK_F_CPP11
-#endif
-
-/* GCC. Clang also defines __GNUC__ so don't detect GCC if using Clang. */
-#if defined(__GNUC__) && !defined(__clang__) && !defined(DUK_F_CLANG)
-#define DUK_F_GCC
-#if defined(__GNUC__) && defined(__GNUC_MINOR__) && defined(__GNUC_PATCHLEVEL__)
-/* Convenience, e.g. gcc 4.5.1 == 40501; http://stackoverflow.com/questions/6031819/emulating-gccs-builtin-unreachable */
-#define DUK_F_GCC_VERSION (__GNUC__ * 10000L + __GNUC_MINOR__ * 100L + __GNUC_PATCHLEVEL__)
-#else
-#error cannot figure out gcc version
-#endif
-#endif
-
-/* MinGW. Also GCC flags (DUK_F_GCC) are enabled now. */
-#if defined(__MINGW32__) || defined(__MINGW64__)
-#define DUK_F_MINGW
-#endif
-
-/* MSVC */
-#if defined(_MSC_VER)
-/* MSVC preprocessor defines: http://msdn.microsoft.com/en-us/library/b0084kay.aspx
- * _MSC_FULL_VER includes the build number, but it has at least two formats, see e.g.
- * BOOST_MSVC_FULL_VER in http://www.boost.org/doc/libs/1_52_0/boost/config/compiler/visualc.hpp
- */
-#define DUK_F_MSVC
-#if defined(_MSC_FULL_VER)
-#if (_MSC_FULL_VER > 100000000)
-#define DUK_F_MSVC_FULL_VER _MSC_FULL_VER
-#else
-#define DUK_F_MSCV_FULL_VER (_MSC_FULL_VER * 10)
-#endif
-#endif
-#endif /* _MSC_VER */
-
-/* TinyC */
-#if defined(__TINYC__)
-/* http://bellard.org/tcc/tcc-doc.html#SEC9 */
-#define DUK_F_TINYC
-#endif
-
-/* VBCC */
-#if defined(__VBCC__)
-#define DUK_F_VBCC
-#endif
-
-/* Atari Mint */
-#if defined(__MINT__)
-#define DUK_F_MINT
-#endif
-
-/*
- * Platform autodetection
- */
-
-/* Workaround for older C++ compilers before including <inttypes.h>,
- * see e.g.: https://sourceware.org/bugzilla/show_bug.cgi?id=15366
- */
-#if defined(__cplusplus) && !defined(__STDC_LIMIT_MACROS)
-#define __STDC_LIMIT_MACROS
-#endif
-#if defined(__cplusplus) && !defined(__STDC_CONSTANT_MACROS)
-#define __STDC_CONSTANT_MACROS
-#endif
-
-#if defined(DUK_F_APPLE)
-/* --- Mac OSX, iPhone, Darwin --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <TargetConditionals.h>
-#include <architecture/byte_order.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-/* http://stackoverflow.com/questions/5919996/how-to-detect-reliably-mac-os-x-ios-linux-windows-in-c-preprocessor */
-#if TARGET_IPHONE_SIMULATOR
-#define DUK_USE_OS_STRING "iphone-sim"
-#elif TARGET_OS_IPHONE
-#define DUK_USE_OS_STRING "iphone"
-#elif TARGET_OS_MAC
-#define DUK_USE_OS_STRING "osx"
-#else
-#define DUK_USE_OS_STRING "osx-unknown"
-#endif
-
-/* Use _setjmp() on Apple by default, see GH-55. */
-#define DUK_JMPBUF_TYPE jmp_buf
-#define DUK_SETJMP(jb) _setjmp((jb))
-#define DUK_LONGJMP(jb) _longjmp((jb), 1)
-#elif defined(DUK_F_OPENBSD)
-/* --- OpenBSD --- */
-/* http://www.monkey.org/openbsd/archive/ports/0401/msg00089.html */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <sys/endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "openbsd"
-#elif defined(DUK_F_BSD)
-/* --- Generic BSD --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <sys/endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "bsd"
-#elif defined(DUK_F_TOS)
-/* --- Atari ST TOS --- */
-#define DUK_USE_DATE_NOW_TIME
-#define DUK_USE_DATE_TZO_GMTIME
-/* no parsing (not an error) */
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <time.h>
-
-#define DUK_USE_OS_STRING "tos"
-
-/* TOS on M68K is always big endian. */
-#if !defined(DUK_USE_BYTEORDER) && defined(DUK_F_M68K)
-#define DUK_USE_BYTEORDER 3
-#endif
-#elif defined(DUK_F_AMIGAOS)
-/* --- AmigaOS --- */
-#if defined(DUK_F_M68K)
-/* AmigaOS on M68k */
-#define DUK_USE_DATE_NOW_TIME
-#define DUK_USE_DATE_TZO_GMTIME
-/* no parsing (not an error) */
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <time.h>
-#elif defined(DUK_F_PPC)
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <time.h>
-#ifndef UINTPTR_MAX
-#define UINTPTR_MAX UINT_MAX
-#endif
-#else
-#error AmigaOS but not M68K/PPC, not supported now
-#endif
-
-#define DUK_USE_OS_STRING "amigaos"
-
-/* AmigaOS on M68K or PPC is always big endian. */
-#if !defined(DUK_USE_BYTEORDER) && (defined(DUK_F_M68K) || defined(DUK_F_PPC))
-#define DUK_USE_BYTEORDER 3
-#endif
-#elif defined(DUK_F_WINDOWS)
-/* --- Windows --- */
-/* Initial fix: disable secure CRT related warnings when compiling Duktape
- * itself (must be defined before including Windows headers). Don't define
- * for user code including duktape.h.
- */
-#if defined(DUK_COMPILING_DUKTAPE) && !defined(_CRT_SECURE_NO_WARNINGS)
-#define _CRT_SECURE_NO_WARNINGS
-#endif
-
-/* Windows 32-bit and 64-bit are currently the same. */
-/* MSVC does not have sys/param.h */
-#define DUK_USE_DATE_NOW_WINDOWS
-#define DUK_USE_DATE_TZO_WINDOWS
-/* Note: PRS and FMT are intentionally left undefined for now. This means
- * there is no platform specific date parsing/formatting but there is still
- * the ISO 8601 standard format.
- */
-#if defined(DUK_COMPILING_DUKTAPE)
-/* Only include when compiling Duktape to avoid polluting application build
- * with a lot of unnecessary defines.
- */
-#include <windows.h>
-#endif
-
-#define DUK_USE_OS_STRING "windows"
-
-/* On Windows, assume we're little endian. Even Itanium which has a
- * configurable endianness runs little endian in Windows.
- */
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-#elif defined(DUK_F_FLASHPLAYER)
-/* --- Flashplayer (Crossbridge) --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "flashplayer"
-
-#if !defined(DUK_USE_BYTEORDER) && defined(DUK_F_FLASHPLAYER)
-#define DUK_USE_BYTEORDER 1
-#endif
-#elif defined(DUK_F_QNX)
-/* --- QNX --- */
-#if defined(DUK_F_QNX) && defined(DUK_COMPILING_DUKTAPE)
-/* See: /opt/qnx650/target/qnx6/usr/include/sys/platform.h */
-#define _XOPEN_SOURCE 600
-#define _POSIX_C_SOURCE 200112L
-#endif
-
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "qnx"
-#elif defined(DUK_F_TINSPIRE)
-/* --- TI-Nspire --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "tinspire"
-#elif defined(DUK_F_EMSCRIPTEN)
-/* --- Emscripten --- */
-#if defined(DUK_COMPILING_DUKTAPE)
-#ifndef _POSIX_C_SOURCE
-#define _POSIX_C_SOURCE 200809L
-#endif
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE /* e.g. getdate_r */
-#endif
-#ifndef _XOPEN_SOURCE
-#define _XOPEN_SOURCE /* e.g. strptime */
-#endif
-#endif /* DUK_COMPILING_DUKTAPE */
-
-#include <sys/types.h>
-#if defined(DUK_F_BCC)
-/* no endian.h */
-#else
-#include <endian.h>
-#endif /* DUK_F_BCC */
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-#include <stdint.h>
-
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-
-#define DUK_USE_OS_STRING "emscripten"
-#elif defined(DUK_F_LINUX)
-/* --- Linux --- */
-#if defined(DUK_COMPILING_DUKTAPE)
-#ifndef _POSIX_C_SOURCE
-#define _POSIX_C_SOURCE 200809L
-#endif
-#ifndef _GNU_SOURCE
-#define _GNU_SOURCE /* e.g. getdate_r */
-#endif
-#ifndef _XOPEN_SOURCE
-#define _XOPEN_SOURCE /* e.g. strptime */
-#endif
-#endif /* DUK_COMPILING_DUKTAPE */
-
-#include <sys/types.h>
-#if defined(DUK_F_BCC)
-/* no endian.h or stdint.h */
-#else
-#include <endian.h>
-#include <stdint.h>
-#endif /* DUK_F_BCC */
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-
-#define DUK_USE_OS_STRING "linux"
-#elif defined(DUK_F_SUN)
-/* --- Solaris --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-
-#include <sys/types.h>
-#include <ast/endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "solaris"
-#elif defined(DUK_F_POSIX)
-/* --- Generic POSIX --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_USE_OS_STRING "posix"
-#elif defined(DUK_F_CYGWIN)
-/* --- Cygwin --- */
-/* don't use strptime() for now */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <sys/types.h>
-#include <endian.h>
-#include <sys/param.h>
-#include <sys/time.h>
-#include <time.h>
-
-#define DUK_JMPBUF_TYPE jmp_buf
-#define DUK_SETJMP(jb) _setjmp((jb))
-#define DUK_LONGJMP(jb) _longjmp((jb), 1)
-
-#define DUK_USE_OS_STRING "windows"
-#elif defined(DUK_F_UNIX)
-/* --- Generic UNIX --- */
-#define DUK_USE_DATE_NOW_GETTIMEOFDAY
-#define DUK_USE_DATE_TZO_GMTIME_R
-#define DUK_USE_DATE_PRS_STRPTIME
-#define DUK_USE_DATE_FMT_STRFTIME
-#include <time.h>
-#include <sys/time.h>
-#define DUK_USE_OS_STRING "unknown"
-#else
-/* --- Generic fallback --- */
-/* The most portable current time provider is time(), but it only has a
- * one second resolution.
- */
-#define DUK_USE_DATE_NOW_TIME
-
-/* The most portable way to figure out local time offset is gmtime(),
- * but it's not thread safe so use with caution.
- */
-#define DUK_USE_DATE_TZO_GMTIME
-
-/* Avoid custom date parsing and formatting for portability. */
-#undef DUK_USE_DATE_PRS_STRPTIME
-#undef DUK_USE_DATE_FMT_STRFTIME
-
-/* Rely on C89 headers only; time.h must be here. */
-#include <time.h>
-
-#define DUK_USE_OS_STRING "unknown"
-#endif /* autodetect platform */
-
-/* Shared includes: C89 */
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h> /* varargs */
-#include <setjmp.h>
-#include <stddef.h> /* e.g. ptrdiff_t */
-#include <math.h>
-#include <limits.h>
-
-/* date.h is omitted, and included per platform */
-
-/* Shared includes: stdint.h is C99 */
-#if defined(DUK_F_NO_STDINT_H)
-/* stdint.h not available */
-#else
-/* Technically C99 (C++11) but found in many systems. On some systems
- * __STDC_LIMIT_MACROS and __STDC_CONSTANT_MACROS must be defined before
- * including stdint.h (see above).
- */
-#include <stdint.h>
-#endif
-
-#if defined(DUK_F_CPP)
-#include <exception> /* std::exception */
-#endif
-
-/*
- * Architecture autodetection
- */
-
-#if defined(DUK_F_X86)
-/* --- x86 --- */
-#define DUK_USE_ARCH_STRING "x86"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_X64)
-/* --- x64 --- */
-#define DUK_USE_ARCH_STRING "x64"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_X32)
-/* --- x32 --- */
-#define DUK_USE_ARCH_STRING "x32"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-/* XXX: This is technically not guaranteed because it's possible to configure
- * an x86 to require aligned accesses with Alignment Check (AC) flag.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 1
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_ARM32)
-/* --- ARM 32-bit --- */
-#define DUK_USE_ARCH_STRING "arm32"
-/* Byte order varies, so rely on autodetect. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 4
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_ARM64)
-/* --- ARM 64-bit --- */
-#define DUK_USE_ARCH_STRING "arm64"
-/* Byte order varies, so rely on autodetect. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_MIPS32)
-/* --- MIPS 32-bit --- */
-#define DUK_USE_ARCH_STRING "mips32"
-/* MIPS byte order varies so rely on autodetection. */
-/* Based on 'make checkalign' there are no alignment requirements on
- * Linux MIPS except for doubles, which need align by 4. Alignment
- * requirements vary based on target though.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 4
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_MIPS64)
-/* --- MIPS 64-bit --- */
-#define DUK_USE_ARCH_STRING "mips64"
-/* MIPS byte order varies so rely on autodetection. */
-/* Good default is a bit arbitrary because alignment requirements
- * depend on target. See https://github.com/svaarala/duktape/issues/102.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_PPC32)
-/* --- PowerPC 32-bit --- */
-#define DUK_USE_ARCH_STRING "ppc32"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 3
-#endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_PPC64)
-/* --- PowerPC 64-bit --- */
-#define DUK_USE_ARCH_STRING "ppc64"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 3
-#endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_SPARC32)
-/* --- SPARC 32-bit --- */
-#define DUK_USE_ARCH_STRING "sparc32"
-/* SPARC byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_SPARC64)
-/* --- SPARC 64-bit --- */
-#define DUK_USE_ARCH_STRING "sparc64"
-/* SPARC byte order varies so rely on autodetection. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_SUPERH)
-/* --- SuperH --- */
-#define DUK_USE_ARCH_STRING "sh"
-/* Byte order varies, rely on autodetection. */
-/* Based on 'make checkalign' there are no alignment requirements on
- * Linux SH4, but align by 4 is probably a good basic default.
- */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 4
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_M68K)
-/* --- Motorola 68k --- */
-#define DUK_USE_ARCH_STRING "m68k"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 3
-#endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#define DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#elif defined(DUK_F_EMSCRIPTEN)
-/* --- Emscripten --- */
-#define DUK_USE_ARCH_STRING "emscripten"
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-#undef DUK_USE_PACKED_TVAL
-#define DUK_F_PACKED_TVAL_PROVIDED
-#else
-/* --- Generic --- */
-/* These are necessary wild guesses. */
-#define DUK_USE_ARCH_STRING "generic"
-/* Rely on autodetection for byte order, alignment, and packed tval. */
-#endif /* autodetect architecture */
-
-/*
- * Compiler autodetection
- */
-
-#if defined(DUK_F_CLANG)
-/* --- Clang --- */
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-/* C99 / C++11 and above: rely on va_copy() which is required. */
-#define DUK_VA_COPY(dest,src) va_copy(dest,src)
-#else
-/* Clang: assume we have __va_copy() in non-C99 mode. */
-#define DUK_VA_COPY(dest,src) __va_copy(dest,src)
-#endif
-
-#define DUK_NORETURN(decl) decl __attribute__((noreturn))
-
-#if defined(__clang__) && defined(__has_builtin)
-#if __has_builtin(__builtin_unreachable)
-#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0)
-#endif
-#endif
-
-#define DUK_USE_BRANCH_HINTS
-#define DUK_LIKELY(x) __builtin_expect((x), 1)
-#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
-
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_NOINLINE __attribute__((noinline))
-#define DUK_INLINE inline
-#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
-#endif
-
-#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS)
-/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're
- * compiling Duktape or the application.
- */
-#if defined(DUK_COMPILING_DUKTAPE)
-#define DUK_EXTERNAL_DECL extern __declspec(dllexport)
-#define DUK_EXTERNAL __declspec(dllexport)
-#else
-#define DUK_EXTERNAL_DECL extern __declspec(dllimport)
-#define DUK_EXTERNAL should_not_happen
-#endif
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL extern
-#define DUK_INTERNAL /*empty*/
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-#else
-#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern
-#define DUK_EXTERNAL __attribute__ ((visibility("default")))
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern
-#define DUK_INTERNAL __attribute__ ((visibility("hidden")))
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-#endif
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "clang"
-#else
-#define DUK_USE_COMPILER_STRING "clang"
-#endif
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-#define DUK_USE_UNION_INITIALIZERS
-
-#undef DUK_USE_FLEX_C99
-#undef DUK_USE_FLEX_ZEROSIZE
-#undef DUK_USE_FLEX_ONESIZE
-#if defined(DUK_F_C99)
-#define DUK_USE_FLEX_C99
-#else
-#define DUK_USE_FLEX_ZEROSIZE
-#endif
-
-#undef DUK_USE_GCC_PRAGMAS
-#define DUK_USE_PACK_CLANG_ATTR
-#elif defined(DUK_F_GCC)
-/* --- GCC --- */
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-/* C99 / C++11 and above: rely on va_copy() which is required. */
-#define DUK_VA_COPY(dest,src) va_copy(dest,src)
-#else
-/* GCC: assume we have __va_copy() in non-C99 mode. */
-#define DUK_VA_COPY(dest,src) __va_copy(dest,src)
-#endif
-
-#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 20500L)
-/* since gcc-2.5 */
-#define DUK_NORETURN(decl) decl __attribute__((noreturn))
-#endif
-
-#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L)
-/* since gcc-4.5 */
-#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0)
-#endif
-
-#define DUK_USE_BRANCH_HINTS
-#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40500L)
-/* GCC: test not very accurate; enable only in relatively recent builds
- * because of bugs in gcc-4.4 (http://lists.debian.org/debian-gcc/2010/04/msg00000.html)
- */
-#define DUK_LIKELY(x) __builtin_expect((x), 1)
-#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
-#endif
-
-#if (defined(DUK_F_C99) || defined(DUK_F_CPP11)) && \
- defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 30101)
-#define DUK_NOINLINE __attribute__((noinline))
-#define DUK_INLINE inline
-#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
-#endif
-
-#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS)
-/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're
- * compiling Duktape or the application.
- */
-#if defined(DUK_COMPILING_DUKTAPE)
-#define DUK_EXTERNAL_DECL extern __declspec(dllexport)
-#define DUK_EXTERNAL __declspec(dllexport)
-#else
-#define DUK_EXTERNAL_DECL extern __declspec(dllimport)
-#define DUK_EXTERNAL should_not_happen
-#endif
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL extern
-#define DUK_INTERNAL /*empty*/
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-#elif defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40000)
-#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern
-#define DUK_EXTERNAL __attribute__ ((visibility("default")))
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern
-#define DUK_INTERNAL __attribute__ ((visibility("hidden")))
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-#endif
-
-#if defined(DUK_F_MINGW)
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "mingw++"
-#else
-#define DUK_USE_COMPILER_STRING "mingw"
-#endif
-#else
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "g++"
-#else
-#define DUK_USE_COMPILER_STRING "gcc"
-#endif
-#endif
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99) || (defined(DUK_F_CPP11) && defined(__GNUC__))
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-#define DUK_USE_UNION_INITIALIZERS
-
-#undef DUK_USE_FLEX_C99
-#undef DUK_USE_FLEX_ZEROSIZE
-#undef DUK_USE_FLEX_ONESIZE
-#if defined(DUK_F_C99)
-#define DUK_USE_FLEX_C99
-#else
-#define DUK_USE_FLEX_ZEROSIZE
-#endif
-
-#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION >= 40600)
-#define DUK_USE_GCC_PRAGMAS
-#else
-#undef DUK_USE_GCC_PRAGMAS
-#endif
-
-#define DUK_USE_PACK_GCC_ATTR
-#elif defined(DUK_F_MSVC)
-/* --- MSVC --- */
-/* http://msdn.microsoft.com/en-us/library/aa235362(VS.60).aspx */
-#define DUK_NORETURN(decl) __declspec(noreturn) decl
-
-/* XXX: DUK_UNREACHABLE for msvc? */
-
-#undef DUK_USE_BRANCH_HINTS
-
-/* XXX: DUK_LIKELY, DUK_UNLIKELY for msvc? */
-/* XXX: DUK_NOINLINE, DUK_INLINE, DUK_ALWAYS_INLINE for msvc? */
-
-#if defined(DUK_F_DLL_BUILD) && defined(DUK_F_WINDOWS)
-/* MSVC dllexport/dllimport: appropriate __declspec depends on whether we're
- * compiling Duktape or the application.
- */
-#if defined(DUK_COMPILING_DUKTAPE)
-#define DUK_EXTERNAL_DECL extern __declspec(dllexport)
-#define DUK_EXTERNAL __declspec(dllexport)
-#else
-#define DUK_EXTERNAL_DECL extern __declspec(dllimport)
-#define DUK_EXTERNAL should_not_happen
-#endif
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL extern
-#define DUK_INTERNAL /*empty*/
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-#endif
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "msvc++"
-#else
-#define DUK_USE_COMPILER_STRING "msvc"
-#endif
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99)
-#define DUK_USE_VARIADIC_MACROS
-#elif defined(_MSC_VER) && (_MSC_VER >= 1400)
-/* VS2005+ should have variadic macros even when they're not C99. */
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-#undef DUK_USE_UNION_INITIALIZERS
-#if defined(_MSC_VER) && (_MSC_VER >= 1800)
-/* VS2013+ supports union initializers but there's a bug involving union-inside-struct:
- * https://connect.microsoft.com/VisualStudio/feedback/details/805981
- * The bug was fixed (at least) in VS2015 so check for VS2015 for now:
- * https://blogs.msdn.microsoft.com/vcblog/2015/07/01/c-compiler-front-end-fixes-in-vs2015/
- * Manually tested using VS2013, CL reports 18.00.31101, so enable for VS2013 too.
- */
-#define DUK_USE_UNION_INITIALIZERS
-#endif
-
-#undef DUK_USE_FLEX_C99
-#undef DUK_USE_FLEX_ZEROSIZE
-#undef DUK_USE_FLEX_ONESIZE
-#if defined(DUK_F_C99)
-#define DUK_USE_FLEX_C99
-#else
-#define DUK_USE_FLEX_ZEROSIZE
-#endif
-
-#undef DUK_USE_GCC_PRAGMAS
-
-#define DUK_USE_PACK_MSVC_PRAGMA
-
-/* These have been tested from VS2008 onwards; may work in older VS versions
- * too but not enabled by default.
- */
-#if defined(_MSC_VER) && (_MSC_VER >= 1500)
-#define DUK_NOINLINE __declspec(noinline)
-#define DUK_INLINE __inline
-#define DUK_ALWAYS_INLINE __forceinline
-#endif
-
-#if defined(_MSC_VER) && (_MSC_VER >= 1900)
-#define DUK_SNPRINTF snprintf
-#define DUK_VSNPRINTF vsnprintf
-#else
-/* (v)snprintf() is missing before MSVC 2015. Note that _(v)snprintf() does
- * NOT NUL terminate on truncation, but Duktape code never assumes that.
- * http://stackoverflow.com/questions/2915672/snprintf-and-visual-studio-2010
- */
-#define DUK_SNPRINTF _snprintf
-#define DUK_VSNPRINTF _vsnprintf
-#endif
-#elif defined(DUK_F_EMSCRIPTEN)
-/* --- Emscripten --- */
-#define DUK_NORETURN(decl) decl __attribute__((noreturn))
-
-#if defined(__clang__) && defined(__has_builtin)
-#if __has_builtin(__builtin_unreachable)
-#define DUK_UNREACHABLE() do { __builtin_unreachable(); } while (0)
-#endif
-#endif
-
-#define DUK_USE_BRANCH_HINTS
-#define DUK_LIKELY(x) __builtin_expect((x), 1)
-#define DUK_UNLIKELY(x) __builtin_expect((x), 0)
-
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_NOINLINE __attribute__((noinline))
-#define DUK_INLINE inline
-#define DUK_ALWAYS_INLINE inline __attribute__((always_inline))
-#endif
-
-#define DUK_EXTERNAL_DECL __attribute__ ((visibility("default"))) extern
-#define DUK_EXTERNAL __attribute__ ((visibility("default")))
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL_DECL __attribute__ ((visibility("hidden"))) extern
-#define DUK_INTERNAL __attribute__ ((visibility("hidden")))
-#endif
-#define DUK_LOCAL_DECL static
-#define DUK_LOCAL static
-
-#define DUK_USE_COMPILER_STRING "emscripten"
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-#define DUK_USE_UNION_INITIALIZERS
-
-#undef DUK_USE_FLEX_C99
-#undef DUK_USE_FLEX_ZEROSIZE
-#undef DUK_USE_FLEX_ONESIZE
-#if defined(DUK_F_C99)
-#define DUK_USE_FLEX_C99
-#else
-#define DUK_USE_FLEX_ZEROSIZE
-#endif
-
-#undef DUK_USE_GCC_PRAGMAS
-#define DUK_USE_PACK_CLANG_ATTR
-#elif defined(DUK_F_TINYC)
-/* --- TinyC --- */
-#undef DUK_USE_BRANCH_HINTS
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "tinyc++"
-#else
-#define DUK_USE_COMPILER_STRING "tinyc"
-#endif
-
-/* http://bellard.org/tcc/tcc-doc.html#SEC7 */
-#define DUK_USE_VARIADIC_MACROS
-
-#define DUK_USE_UNION_INITIALIZERS
-
-/* Most portable, wastes space */
-#define DUK_USE_FLEX_ONESIZE
-
-/* Most portable, potentially wastes space */
-#define DUK_USE_PACK_DUMMY_MEMBER
-#elif defined(DUK_F_VBCC)
-/* --- VBCC --- */
-#undef DUK_USE_BRANCH_HINTS
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "vbcc-c++"
-#else
-#define DUK_USE_COMPILER_STRING "vbcc"
-#endif
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-/* VBCC supports C99 so check only for C99 for union initializer support.
- * Designated union initializers would possibly work even without a C99 check.
- */
-#undef DUK_USE_UNION_INITIALIZERS
-#if defined(DUK_F_C99)
-#define DUK_USE_UNION_INITIALIZERS
-#endif
-
-#define DUK_USE_FLEX_ZEROSIZE
-#define DUK_USE_PACK_DUMMY_MEMBER
-#elif defined(DUK_F_BCC)
-/* --- Bruce's C compiler --- */
-#undef DUK_USE_BRANCH_HINTS
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "bcc++"
-#else
-#define DUK_USE_COMPILER_STRING "bcc"
-#endif
-
-/* Most portable */
-#undef DUK_USE_VARIADIC_MACROS
-
-/* Most portable, wastes space */
-#undef DUK_USE_UNION_INITIALIZERS
-
-/* Most portable, wastes space */
-#define DUK_USE_FLEX_ONESIZE
-
-/* Most portable, potentially wastes space */
-#define DUK_USE_PACK_DUMMY_MEMBER
-
-/* BCC, assume we're on x86. */
-#if !defined(DUK_USE_BYTEORDER)
-#define DUK_USE_BYTEORDER 1
-#endif
-#else
-/* --- Generic --- */
-#undef DUK_USE_BRANCH_HINTS
-
-#if defined(DUK_F_CPP)
-#define DUK_USE_COMPILER_STRING "generic-c++"
-#else
-#define DUK_USE_COMPILER_STRING "generic"
-#endif
-
-#undef DUK_USE_VARIADIC_MACROS
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_USE_VARIADIC_MACROS
-#endif
-
-/* C++ doesn't have standard designated union initializers ({ .foo = 1 }). */
-#undef DUK_USE_UNION_INITIALIZERS
-#if defined(DUK_F_C99)
-#define DUK_USE_UNION_INITIALIZERS
-#endif
-
-/* Most portable, wastes space */
-#define DUK_USE_FLEX_ONESIZE
-
-/* Most portable, potentially wastes space */
-#define DUK_USE_PACK_DUMMY_MEMBER
-#endif /* autodetect compiler */
-
-/* uclibc */
-#if defined(__UCLIBC__)
-#define DUK_F_UCLIBC
-#endif
-
-/*
- * Wrapper typedefs and constants for integer types, also sanity check types.
- *
- * C99 typedefs are quite good but not always available, and we want to avoid
- * forcibly redefining the C99 typedefs. So, there are Duktape wrappers for
- * all C99 typedefs and Duktape code should only use these typedefs. Type
- * detection when C99 is not supported is best effort and may end up detecting
- * some types incorrectly.
- *
- * Pointer sizes are a portability problem: pointers to different types may
- * have a different size and function pointers are very difficult to manage
- * portably.
- *
- * http://en.wikipedia.org/wiki/C_data_types#Fixed-width_integer_types
- *
- * Note: there's an interesting corner case when trying to define minimum
- * signed integer value constants which leads to the current workaround of
- * defining e.g. -0x80000000 as (-0x7fffffffL - 1L). See doc/code-issues.txt
- * for a longer discussion.
- *
- * Note: avoid typecasts and computations in macro integer constants as they
- * can then no longer be used in macro relational expressions (such as
- * #if DUK_SIZE_MAX < 0xffffffffUL). There is internal code which relies on
- * being able to compare DUK_SIZE_MAX against a limit.
- */
-
-/* XXX: add feature options to force basic types from outside? */
-
-#if !defined(INT_MAX)
-#error INT_MAX not defined
-#endif
-
-/* Check that architecture is two's complement, standard C allows e.g.
- * INT_MIN to be -2**31+1 (instead of -2**31).
- */
-#if defined(INT_MAX) && defined(INT_MIN)
-#if INT_MAX != -(INT_MIN + 1)
-#error platform does not seem complement of two
-#endif
-#else
-#error cannot check complement of two
-#endif
-
-/* Pointer size determination based on __WORDSIZE or architecture when
- * that's not available.
- */
-#if defined(DUK_F_X86) || defined(DUK_F_X32) || \
- defined(DUK_F_M68K) || defined(DUK_F_PPC32) || \
- defined(DUK_F_BCC) || \
- (defined(__WORDSIZE) && (__WORDSIZE == 32))
-#define DUK_F_32BIT_PTRS
-#elif defined(DUK_F_X64) || \
- (defined(__WORDSIZE) && (__WORDSIZE == 64))
-#define DUK_F_64BIT_PTRS
-#else
-/* not sure, not needed with C99 anyway */
-#endif
-
-/* Intermediate define for 'have inttypes.h' */
-#undef DUK_F_HAVE_INTTYPES
-#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L) && \
- !(defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC))
-/* vbcc + AmigaOS has C99 but no inttypes.h */
-#define DUK_F_HAVE_INTTYPES
-#elif defined(__cplusplus) && (__cplusplus >= 201103L)
-/* C++11 apparently ratified stdint.h */
-#define DUK_F_HAVE_INTTYPES
-#endif
-
-/* Basic integer typedefs and limits, preferably from inttypes.h, otherwise
- * through automatic detection.
- */
-#if defined(DUK_F_HAVE_INTTYPES)
-/* C99 or compatible */
-
-#define DUK_F_HAVE_64BIT
-#include <inttypes.h>
-
-typedef uint8_t duk_uint8_t;
-typedef int8_t duk_int8_t;
-typedef uint16_t duk_uint16_t;
-typedef int16_t duk_int16_t;
-typedef uint32_t duk_uint32_t;
-typedef int32_t duk_int32_t;
-typedef uint64_t duk_uint64_t;
-typedef int64_t duk_int64_t;
-typedef uint_least8_t duk_uint_least8_t;
-typedef int_least8_t duk_int_least8_t;
-typedef uint_least16_t duk_uint_least16_t;
-typedef int_least16_t duk_int_least16_t;
-typedef uint_least32_t duk_uint_least32_t;
-typedef int_least32_t duk_int_least32_t;
-typedef uint_least64_t duk_uint_least64_t;
-typedef int_least64_t duk_int_least64_t;
-typedef uint_fast8_t duk_uint_fast8_t;
-typedef int_fast8_t duk_int_fast8_t;
-typedef uint_fast16_t duk_uint_fast16_t;
-typedef int_fast16_t duk_int_fast16_t;
-typedef uint_fast32_t duk_uint_fast32_t;
-typedef int_fast32_t duk_int_fast32_t;
-typedef uint_fast64_t duk_uint_fast64_t;
-typedef int_fast64_t duk_int_fast64_t;
-typedef uintptr_t duk_uintptr_t;
-typedef intptr_t duk_intptr_t;
-typedef uintmax_t duk_uintmax_t;
-typedef intmax_t duk_intmax_t;
-
-#define DUK_UINT8_MIN 0
-#define DUK_UINT8_MAX UINT8_MAX
-#define DUK_INT8_MIN INT8_MIN
-#define DUK_INT8_MAX INT8_MAX
-#define DUK_UINT_LEAST8_MIN 0
-#define DUK_UINT_LEAST8_MAX UINT_LEAST8_MAX
-#define DUK_INT_LEAST8_MIN INT_LEAST8_MIN
-#define DUK_INT_LEAST8_MAX INT_LEAST8_MAX
-#define DUK_UINT_FAST8_MIN 0
-#define DUK_UINT_FAST8_MAX UINT_FAST8_MAX
-#define DUK_INT_FAST8_MIN INT_FAST8_MIN
-#define DUK_INT_FAST8_MAX INT_FAST8_MAX
-#define DUK_UINT16_MIN 0
-#define DUK_UINT16_MAX UINT16_MAX
-#define DUK_INT16_MIN INT16_MIN
-#define DUK_INT16_MAX INT16_MAX
-#define DUK_UINT_LEAST16_MIN 0
-#define DUK_UINT_LEAST16_MAX UINT_LEAST16_MAX
-#define DUK_INT_LEAST16_MIN INT_LEAST16_MIN
-#define DUK_INT_LEAST16_MAX INT_LEAST16_MAX
-#define DUK_UINT_FAST16_MIN 0
-#define DUK_UINT_FAST16_MAX UINT_FAST16_MAX
-#define DUK_INT_FAST16_MIN INT_FAST16_MIN
-#define DUK_INT_FAST16_MAX INT_FAST16_MAX
-#define DUK_UINT32_MIN 0
-#define DUK_UINT32_MAX UINT32_MAX
-#define DUK_INT32_MIN INT32_MIN
-#define DUK_INT32_MAX INT32_MAX
-#define DUK_UINT_LEAST32_MIN 0
-#define DUK_UINT_LEAST32_MAX UINT_LEAST32_MAX
-#define DUK_INT_LEAST32_MIN INT_LEAST32_MIN
-#define DUK_INT_LEAST32_MAX INT_LEAST32_MAX
-#define DUK_UINT_FAST32_MIN 0
-#define DUK_UINT_FAST32_MAX UINT_FAST32_MAX
-#define DUK_INT_FAST32_MIN INT_FAST32_MIN
-#define DUK_INT_FAST32_MAX INT_FAST32_MAX
-#define DUK_UINT64_MIN 0
-#define DUK_UINT64_MAX UINT64_MAX
-#define DUK_INT64_MIN INT64_MIN
-#define DUK_INT64_MAX INT64_MAX
-#define DUK_UINT_LEAST64_MIN 0
-#define DUK_UINT_LEAST64_MAX UINT_LEAST64_MAX
-#define DUK_INT_LEAST64_MIN INT_LEAST64_MIN
-#define DUK_INT_LEAST64_MAX INT_LEAST64_MAX
-#define DUK_UINT_FAST64_MIN 0
-#define DUK_UINT_FAST64_MAX UINT_FAST64_MAX
-#define DUK_INT_FAST64_MIN INT_FAST64_MIN
-#define DUK_INT_FAST64_MAX INT_FAST64_MAX
-
-#define DUK_UINTPTR_MIN 0
-#define DUK_UINTPTR_MAX UINTPTR_MAX
-#define DUK_INTPTR_MIN INTPTR_MIN
-#define DUK_INTPTR_MAX INTPTR_MAX
-
-#define DUK_UINTMAX_MIN 0
-#define DUK_UINTMAX_MAX UINTMAX_MAX
-#define DUK_INTMAX_MIN INTMAX_MIN
-#define DUK_INTMAX_MAX INTMAX_MAX
-
-#define DUK_SIZE_MIN 0
-#define DUK_SIZE_MAX SIZE_MAX
-#undef DUK_SIZE_MAX_COMPUTED
-
-#else /* C99 types */
-
-/* When C99 types are not available, we use heuristic detection to get
- * the basic 8, 16, 32, and (possibly) 64 bit types. The fast/least
- * types are then assumed to be exactly the same for now: these could
- * be improved per platform but C99 types are very often now available.
- * 64-bit types are not available on all platforms; this is OK at least
- * on 32-bit platforms.
- *
- * This detection code is necessarily a bit hacky and can provide typedefs
- * and defines that won't work correctly on some exotic platform.
- */
-
-#if (defined(CHAR_BIT) && (CHAR_BIT == 8)) || \
- (defined(UCHAR_MAX) && (UCHAR_MAX == 255))
-typedef unsigned char duk_uint8_t;
-typedef signed char duk_int8_t;
-#else
-#error cannot detect 8-bit type
-#endif
-
-#if defined(USHRT_MAX) && (USHRT_MAX == 65535UL)
-typedef unsigned short duk_uint16_t;
-typedef signed short duk_int16_t;
-#elif defined(UINT_MAX) && (UINT_MAX == 65535UL)
-/* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */
-typedef unsigned int duk_uint16_t;
-typedef signed int duk_int16_t;
-#else
-#error cannot detect 16-bit type
-#endif
-
-#if defined(UINT_MAX) && (UINT_MAX == 4294967295UL)
-typedef unsigned int duk_uint32_t;
-typedef signed int duk_int32_t;
-#elif defined(ULONG_MAX) && (ULONG_MAX == 4294967295UL)
-/* On some platforms int is 16-bit but long is 32-bit (e.g. PureC) */
-typedef unsigned long duk_uint32_t;
-typedef signed long duk_int32_t;
-#else
-#error cannot detect 32-bit type
-#endif
-
-/* 64-bit type detection is a bit tricky.
- *
- * ULLONG_MAX is a standard define. __LONG_LONG_MAX__ and __ULONG_LONG_MAX__
- * are used by at least GCC (even if system headers don't provide ULLONG_MAX).
- * Some GCC variants may provide __LONG_LONG_MAX__ but not __ULONG_LONG_MAX__.
- *
- * ULL / LL constants are rejected / warned about by some compilers, even if
- * the compiler has a 64-bit type and the compiler/system headers provide an
- * unsupported constant (ULL/LL)! Try to avoid using ULL / LL constants.
- * As a side effect we can only check that e.g. ULONG_MAX is larger than 32
- * bits but can't be sure it is exactly 64 bits. Self tests will catch such
- * cases.
- */
-#undef DUK_F_HAVE_64BIT
-#if !defined(DUK_F_HAVE_64BIT) && defined(ULONG_MAX)
-#if (ULONG_MAX > 4294967295UL)
-#define DUK_F_HAVE_64BIT
-typedef unsigned long duk_uint64_t;
-typedef signed long duk_int64_t;
-#endif
-#endif
-#if !defined(DUK_F_HAVE_64BIT) && defined(ULLONG_MAX)
-#if (ULLONG_MAX > 4294967295UL)
-#define DUK_F_HAVE_64BIT
-typedef unsigned long long duk_uint64_t;
-typedef signed long long duk_int64_t;
-#endif
-#endif
-#if !defined(DUK_F_HAVE_64BIT) && defined(__ULONG_LONG_MAX__)
-#if (__ULONG_LONG_MAX__ > 4294967295UL)
-#define DUK_F_HAVE_64BIT
-typedef unsigned long long duk_uint64_t;
-typedef signed long long duk_int64_t;
-#endif
-#endif
-#if !defined(DUK_F_HAVE_64BIT) && defined(__LONG_LONG_MAX__)
-#if (__LONG_LONG_MAX__ > 2147483647L)
-#define DUK_F_HAVE_64BIT
-typedef unsigned long long duk_uint64_t;
-typedef signed long long duk_int64_t;
-#endif
-#endif
-#if !defined(DUK_F_HAVE_64BIT) && \
- (defined(DUK_F_MINGW) || defined(DUK_F_MSVC))
-/* Both MinGW and MSVC have a 64-bit type. */
-#define DUK_F_HAVE_64BIT
-typedef unsigned long duk_uint64_t;
-typedef signed long duk_int64_t;
-#endif
-#if !defined(DUK_F_HAVE_64BIT)
-/* cannot detect 64-bit type, not always needed so don't error */
-#endif
-
-typedef duk_uint8_t duk_uint_least8_t;
-typedef duk_int8_t duk_int_least8_t;
-typedef duk_uint16_t duk_uint_least16_t;
-typedef duk_int16_t duk_int_least16_t;
-typedef duk_uint32_t duk_uint_least32_t;
-typedef duk_int32_t duk_int_least32_t;
-typedef duk_uint8_t duk_uint_fast8_t;
-typedef duk_int8_t duk_int_fast8_t;
-typedef duk_uint16_t duk_uint_fast16_t;
-typedef duk_int16_t duk_int_fast16_t;
-typedef duk_uint32_t duk_uint_fast32_t;
-typedef duk_int32_t duk_int_fast32_t;
-#if defined(DUK_F_HAVE_64BIT)
-typedef duk_uint64_t duk_uint_least64_t;
-typedef duk_int64_t duk_int_least64_t;
-typedef duk_uint64_t duk_uint_fast64_t;
-typedef duk_int64_t duk_int_fast64_t;
-#endif
-#if defined(DUK_F_HAVE_64BIT)
-typedef duk_uint64_t duk_uintmax_t;
-typedef duk_int64_t duk_intmax_t;
-#else
-typedef duk_uint32_t duk_uintmax_t;
-typedef duk_int32_t duk_intmax_t;
-#endif
-
-/* Note: the funny looking computations for signed minimum 16-bit, 32-bit, and
- * 64-bit values are intentional as the obvious forms (e.g. -0x80000000L) are
- * -not- portable. See code-issues.txt for a detailed discussion.
- */
-#define DUK_UINT8_MIN 0UL
-#define DUK_UINT8_MAX 0xffUL
-#define DUK_INT8_MIN (-0x80L)
-#define DUK_INT8_MAX 0x7fL
-#define DUK_UINT_LEAST8_MIN 0UL
-#define DUK_UINT_LEAST8_MAX 0xffUL
-#define DUK_INT_LEAST8_MIN (-0x80L)
-#define DUK_INT_LEAST8_MAX 0x7fL
-#define DUK_UINT_FAST8_MIN 0UL
-#define DUK_UINT_FAST8_MAX 0xffUL
-#define DUK_INT_FAST8_MIN (-0x80L)
-#define DUK_INT_FAST8_MAX 0x7fL
-#define DUK_UINT16_MIN 0UL
-#define DUK_UINT16_MAX 0xffffUL
-#define DUK_INT16_MIN (-0x7fffL - 1L)
-#define DUK_INT16_MAX 0x7fffL
-#define DUK_UINT_LEAST16_MIN 0UL
-#define DUK_UINT_LEAST16_MAX 0xffffUL
-#define DUK_INT_LEAST16_MIN (-0x7fffL - 1L)
-#define DUK_INT_LEAST16_MAX 0x7fffL
-#define DUK_UINT_FAST16_MIN 0UL
-#define DUK_UINT_FAST16_MAX 0xffffUL
-#define DUK_INT_FAST16_MIN (-0x7fffL - 1L)
-#define DUK_INT_FAST16_MAX 0x7fffL
-#define DUK_UINT32_MIN 0UL
-#define DUK_UINT32_MAX 0xffffffffUL
-#define DUK_INT32_MIN (-0x7fffffffL - 1L)
-#define DUK_INT32_MAX 0x7fffffffL
-#define DUK_UINT_LEAST32_MIN 0UL
-#define DUK_UINT_LEAST32_MAX 0xffffffffUL
-#define DUK_INT_LEAST32_MIN (-0x7fffffffL - 1L)
-#define DUK_INT_LEAST32_MAX 0x7fffffffL
-#define DUK_UINT_FAST32_MIN 0UL
-#define DUK_UINT_FAST32_MAX 0xffffffffUL
-#define DUK_INT_FAST32_MIN (-0x7fffffffL - 1L)
-#define DUK_INT_FAST32_MAX 0x7fffffffL
-
-/* 64-bit constants. Since LL / ULL constants are not always available,
- * use computed values. These values can't be used in preprocessor
- * comparisons; flag them as such.
- */
-#if defined(DUK_F_HAVE_64BIT)
-#define DUK_UINT64_MIN ((duk_uint64_t) 0)
-#define DUK_UINT64_MAX ((duk_uint64_t) -1)
-#define DUK_INT64_MIN ((duk_int64_t) (~(DUK_UINT64_MAX >> 1)))
-#define DUK_INT64_MAX ((duk_int64_t) (DUK_UINT64_MAX >> 1))
-#define DUK_UINT_LEAST64_MIN DUK_UINT64_MIN
-#define DUK_UINT_LEAST64_MAX DUK_UINT64_MAX
-#define DUK_INT_LEAST64_MIN DUK_INT64_MIN
-#define DUK_INT_LEAST64_MAX DUK_INT64_MAX
-#define DUK_UINT_FAST64_MIN DUK_UINT64_MIN
-#define DUK_UINT_FAST64_MAX DUK_UINT64_MAX
-#define DUK_INT_FAST64_MIN DUK_INT64_MIN
-#define DUK_INT_FAST64_MAX DUK_INT64_MAX
-#define DUK_UINT64_MIN_COMPUTED
-#define DUK_UINT64_MAX_COMPUTED
-#define DUK_INT64_MIN_COMPUTED
-#define DUK_INT64_MAX_COMPUTED
-#define DUK_UINT_LEAST64_MIN_COMPUTED
-#define DUK_UINT_LEAST64_MAX_COMPUTED
-#define DUK_INT_LEAST64_MIN_COMPUTED
-#define DUK_INT_LEAST64_MAX_COMPUTED
-#define DUK_UINT_FAST64_MIN_COMPUTED
-#define DUK_UINT_FAST64_MAX_COMPUTED
-#define DUK_INT_FAST64_MIN_COMPUTED
-#define DUK_INT_FAST64_MAX_COMPUTED
-#endif
-
-#if defined(DUK_F_HAVE_64BIT)
-#define DUK_UINTMAX_MIN DUK_UINT64_MIN
-#define DUK_UINTMAX_MAX DUK_UINT64_MAX
-#define DUK_INTMAX_MIN DUK_INT64_MIN
-#define DUK_INTMAX_MAX DUK_INT64_MAX
-#define DUK_UINTMAX_MIN_COMPUTED
-#define DUK_UINTMAX_MAX_COMPUTED
-#define DUK_INTMAX_MIN_COMPUTED
-#define DUK_INTMAX_MAX_COMPUTED
-#else
-#define DUK_UINTMAX_MIN 0UL
-#define DUK_UINTMAX_MAX 0xffffffffUL
-#define DUK_INTMAX_MIN (-0x7fffffffL - 1L)
-#define DUK_INTMAX_MAX 0x7fffffffL
-#endif
-
-/* This detection is not very reliable. */
-#if defined(DUK_F_32BIT_PTRS)
-typedef duk_int32_t duk_intptr_t;
-typedef duk_uint32_t duk_uintptr_t;
-#define DUK_UINTPTR_MIN DUK_UINT32_MIN
-#define DUK_UINTPTR_MAX DUK_UINT32_MAX
-#define DUK_INTPTR_MIN DUK_INT32_MIN
-#define DUK_INTPTR_MAX DUK_INT32_MAX
-#elif defined(DUK_F_64BIT_PTRS) && defined(DUK_F_HAVE_64BIT)
-typedef duk_int64_t duk_intptr_t;
-typedef duk_uint64_t duk_uintptr_t;
-#define DUK_UINTPTR_MIN DUK_UINT64_MIN
-#define DUK_UINTPTR_MAX DUK_UINT64_MAX
-#define DUK_INTPTR_MIN DUK_INT64_MIN
-#define DUK_INTPTR_MAX DUK_INT64_MAX
-#define DUK_UINTPTR_MIN_COMPUTED
-#define DUK_UINTPTR_MAX_COMPUTED
-#define DUK_INTPTR_MIN_COMPUTED
-#define DUK_INTPTR_MAX_COMPUTED
-#else
-#error cannot determine intptr type
-#endif
-
-/* SIZE_MAX may be missing so use an approximate value for it. */
-#undef DUK_SIZE_MAX_COMPUTED
-#if !defined(SIZE_MAX)
-#define DUK_SIZE_MAX_COMPUTED
-#define SIZE_MAX ((size_t) (-1))
-#endif
-#define DUK_SIZE_MIN 0
-#define DUK_SIZE_MAX SIZE_MAX
-
-#endif /* C99 types */
-
-/* A few types are assumed to always exist. */
-typedef size_t duk_size_t;
-typedef ptrdiff_t duk_ptrdiff_t;
-
-/* The best type for an "all around int" in Duktape internals is "at least
- * 32 bit signed integer" which is most convenient. Same for unsigned type.
- * Prefer 'int' when large enough, as it is almost always a convenient type.
- */
-#if defined(UINT_MAX) && (UINT_MAX >= 0xffffffffUL)
-typedef int duk_int_t;
-typedef unsigned int duk_uint_t;
-#define DUK_INT_MIN INT_MIN
-#define DUK_INT_MAX INT_MAX
-#define DUK_UINT_MIN 0
-#define DUK_UINT_MAX UINT_MAX
-#else
-typedef duk_int_fast32_t duk_int_t;
-typedef duk_uint_fast32_t duk_uint_t;
-#define DUK_INT_MIN DUK_INT_FAST32_MIN
-#define DUK_INT_MAX DUK_INT_FAST32_MAX
-#define DUK_UINT_MIN DUK_UINT_FAST32_MIN
-#define DUK_UINT_MAX DUK_UINT_FAST32_MAX
-#endif
-
-/* Same as 'duk_int_t' but guaranteed to be a 'fast' variant if this
- * distinction matters for the CPU. These types are used mainly in the
- * executor where it might really matter.
- */
-typedef duk_int_fast32_t duk_int_fast_t;
-typedef duk_uint_fast32_t duk_uint_fast_t;
-#define DUK_INT_FAST_MIN DUK_INT_FAST32_MIN
-#define DUK_INT_FAST_MAX DUK_INT_FAST32_MAX
-#define DUK_UINT_FAST_MIN DUK_UINT_FAST32_MIN
-#define DUK_UINT_FAST_MAX DUK_UINT_FAST32_MAX
-
-/* Small integers (16 bits or more) can fall back to the 'int' type, but
- * have a typedef so they are marked "small" explicitly.
- */
-typedef int duk_small_int_t;
-typedef unsigned int duk_small_uint_t;
-#define DUK_SMALL_INT_MIN INT_MIN
-#define DUK_SMALL_INT_MAX INT_MAX
-#define DUK_SMALL_UINT_MIN 0
-#define DUK_SMALL_UINT_MAX UINT_MAX
-
-/* Fast variants of small integers, again for really fast paths like the
- * executor.
- */
-typedef duk_int_fast16_t duk_small_int_fast_t;
-typedef duk_uint_fast16_t duk_small_uint_fast_t;
-#define DUK_SMALL_INT_FAST_MIN DUK_INT_FAST16_MIN
-#define DUK_SMALL_INT_FAST_MAX DUK_INT_FAST16_MAX
-#define DUK_SMALL_UINT_FAST_MIN DUK_UINT_FAST16_MIN
-#define DUK_SMALL_UINT_FAST_MAX DUK_UINT_FAST16_MAX
-
-/* Boolean values are represented with the platform 'int'. */
-typedef duk_small_int_t duk_bool_t;
-#define DUK_BOOL_MIN DUK_SMALL_INT_MIN
-#define DUK_BOOL_MAX DUK_SMALL_INT_MAX
-
-/* Index values must have at least 32-bit signed range. */
-typedef duk_int_t duk_idx_t;
-#define DUK_IDX_MIN DUK_INT_MIN
-#define DUK_IDX_MAX DUK_INT_MAX
-
-/* Unsigned index variant. */
-typedef duk_uint_t duk_uidx_t;
-#define DUK_UIDX_MIN DUK_UINT_MIN
-#define DUK_UIDX_MAX DUK_UINT_MAX
-
-/* Array index values, could be exact 32 bits.
- * Currently no need for signed duk_arridx_t.
- */
-typedef duk_uint_t duk_uarridx_t;
-#define DUK_UARRIDX_MIN DUK_UINT_MIN
-#define DUK_UARRIDX_MAX DUK_UINT_MAX
-
-/* Duktape/C function return value, platform int is enough for now to
- * represent 0, 1, or negative error code. Must be compatible with
- * assigning truth values (e.g. duk_ret_t rc = (foo == bar);).
- */
-typedef duk_small_int_t duk_ret_t;
-#define DUK_RET_MIN DUK_SMALL_INT_MIN
-#define DUK_RET_MAX DUK_SMALL_INT_MAX
-
-/* Error codes are represented with platform int. High bits are used
- * for flags and such, so 32 bits are needed.
- */
-typedef duk_int_t duk_errcode_t;
-#define DUK_ERRCODE_MIN DUK_INT_MIN
-#define DUK_ERRCODE_MAX DUK_INT_MAX
-
-/* Codepoint type. Must be 32 bits or more because it is used also for
- * internal codepoints. The type is signed because negative codepoints
- * are used as internal markers (e.g. to mark EOF or missing argument).
- * (X)UTF-8/CESU-8 encode/decode take and return an unsigned variant to
- * ensure duk_uint32_t casts back and forth nicely. Almost everything
- * else uses the signed one.
- */
-typedef duk_int_t duk_codepoint_t;
-typedef duk_uint_t duk_ucodepoint_t;
-#define DUK_CODEPOINT_MIN DUK_INT_MIN
-#define DUK_CODEPOINT_MAX DUK_INT_MAX
-#define DUK_UCODEPOINT_MIN DUK_UINT_MIN
-#define DUK_UCODEPOINT_MAX DUK_UINT_MAX
-
-/* IEEE float/double typedef. */
-typedef float duk_float_t;
-typedef double duk_double_t;
-
-/* We're generally assuming that we're working on a platform with a 32-bit
- * address space. If DUK_SIZE_MAX is a typecast value (which is necessary
- * if SIZE_MAX is missing), the check must be avoided because the
- * preprocessor can't do a comparison.
- */
-#if !defined(DUK_SIZE_MAX)
-#error DUK_SIZE_MAX is undefined, probably missing SIZE_MAX
-#elif !defined(DUK_SIZE_MAX_COMPUTED)
-#if DUK_SIZE_MAX < 0xffffffffUL
-/* On some systems SIZE_MAX can be smaller than max unsigned 32-bit value
- * which seems incorrect if size_t is (at least) an unsigned 32-bit type.
- * However, it doesn't seem useful to error out compilation if this is the
- * case.
- */
-#endif
-#endif
-
-/* Type for public API calls. */
-typedef struct duk_hthread duk_context;
-
-/* Check whether we should use 64-bit integers or not.
- *
- * Quite incomplete now. Use 64-bit types if detected (C99 or other detection)
- * unless they are known to be unreliable. For instance, 64-bit types are
- * available on VBCC but seem to misbehave.
- */
-#if defined(DUK_F_HAVE_64BIT) && !defined(DUK_F_VBCC)
-#define DUK_USE_64BIT_OPS
-#else
-#undef DUK_USE_64BIT_OPS
-#endif
-
-/*
- * Fill-ins for platform, architecture, and compiler
- */
-
-#if !defined(DUK_SETJMP)
-#define DUK_JMPBUF_TYPE jmp_buf
-#define DUK_SETJMP(jb) setjmp((jb))
-#define DUK_LONGJMP(jb) longjmp((jb), 1)
-#endif
-
-#if 0
-/* sigsetjmp() alternative */
-#define DUK_JMPBUF_TYPE sigjmp_buf
-#define DUK_SETJMP(jb) sigsetjmp((jb))
-#define DUK_LONGJMP(jb) siglongjmp((jb), 1)
-#endif
-
-typedef FILE duk_file;
-#if !defined(DUK_STDIN)
-#define DUK_STDIN stdin
-#endif
-#if !defined(DUK_STDOUT)
-#define DUK_STDOUT stdout
-#endif
-#if !defined(DUK_STDERR)
-#define DUK_STDERR stderr
-#endif
-
-/* Special naming to avoid conflict with e.g. DUK_FREE() in duk_heap.h
- * (which is unfortunately named). May sometimes need replacement, e.g.
- * some compilers don't handle zero length or NULL correctly in realloc().
- */
-#if !defined(DUK_ANSI_MALLOC)
-#define DUK_ANSI_MALLOC malloc
-#endif
-#if !defined(DUK_ANSI_REALLOC)
-#define DUK_ANSI_REALLOC realloc
-#endif
-#if !defined(DUK_ANSI_CALLOC)
-#define DUK_ANSI_CALLOC calloc
-#endif
-#if !defined(DUK_ANSI_FREE)
-#define DUK_ANSI_FREE free
-#endif
-
-/* ANSI C (various versions) and some implementations require that the
- * pointer arguments to memset(), memcpy(), and memmove() be valid values
- * even when byte size is 0 (even a NULL pointer is considered invalid in
- * this context). Zero-size operations as such are allowed, as long as their
- * pointer arguments point to a valid memory area. The DUK_MEMSET(),
- * DUK_MEMCPY(), and DUK_MEMMOVE() macros require this same behavior, i.e.:
- * (1) pointers must be valid and non-NULL, (2) zero size must otherwise be
- * allowed. If these are not fulfilled, a macro wrapper is needed.
- *
- * http://stackoverflow.com/questions/5243012/is-it-guaranteed-to-be-safe-to-perform-memcpy0-0-0
- * http://lists.cs.uiuc.edu/pipermail/llvmdev/2007-October/011065.html
- *
- * Not sure what's the required behavior when a pointer points just past the
- * end of a buffer, which often happens in practice (e.g. zero size memmoves).
- * For example, if allocation size is 3, the following pointer would not
- * technically point to a valid memory byte:
- *
- * <-- alloc -->
- * | 0 | 1 | 2 | .....
- * ^-- p=3, points after last valid byte (2)
- */
-#if !defined(DUK_MEMCPY)
-#if defined(DUK_F_UCLIBC)
-/* Old uclibcs have a broken memcpy so use memmove instead (this is overly wide
- * now on purpose): http://lists.uclibc.org/pipermail/uclibc-cvs/2008-October/025511.html
- */
-#define DUK_MEMCPY memmove
-#else
-#define DUK_MEMCPY memcpy
-#endif
-#endif
-#if !defined(DUK_MEMMOVE)
-#define DUK_MEMMOVE memmove
-#endif
-#if !defined(DUK_MEMCMP)
-#define DUK_MEMCMP memcmp
-#endif
-#if !defined(DUK_MEMSET)
-#define DUK_MEMSET memset
-#endif
-#if !defined(DUK_STRLEN)
-#define DUK_STRLEN strlen
-#endif
-#if !defined(DUK_STRCMP)
-#define DUK_STRCMP strcmp
-#endif
-#if !defined(DUK_STRNCMP)
-#define DUK_STRNCMP strncmp
-#endif
-#if !defined(DUK_PRINTF)
-#define DUK_PRINTF printf
-#endif
-#if !defined(DUK_FPRINTF)
-#define DUK_FPRINTF fprintf
-#endif
-#if !defined(DUK_SPRINTF)
-#define DUK_SPRINTF sprintf
-#endif
-#if !defined(DUK_SNPRINTF)
-/* snprintf() is technically not part of C89 but usually available. */
-#define DUK_SNPRINTF snprintf
-#endif
-#if !defined(DUK_VSPRINTF)
-#define DUK_VSPRINTF vsprintf
-#endif
-#if !defined(DUK_VSNPRINTF)
-/* vsnprintf() is technically not part of C89 but usually available. */
-#define DUK_VSNPRINTF vsnprintf
-#endif
-#if !defined(DUK_SSCANF)
-#define DUK_SSCANF sscanf
-#endif
-#if !defined(DUK_VSSCANF)
-#define DUK_VSSCANF vsscanf
-#endif
-#if !defined(DUK_FOPEN)
-#define DUK_FOPEN fopen
-#endif
-#if !defined(DUK_FCLOSE)
-#define DUK_FCLOSE fclose
-#endif
-#if !defined(DUK_FREAD)
-#define DUK_FREAD fread
-#endif
-#if !defined(DUK_FWRITE)
-#define DUK_FWRITE fwrite
-#endif
-#if !defined(DUK_FSEEK)
-#define DUK_FSEEK fseek
-#endif
-#if !defined(DUK_FTELL)
-#define DUK_FTELL ftell
-#endif
-#if !defined(DUK_FFLUSH)
-#define DUK_FFLUSH fflush
-#endif
-#if !defined(DUK_FPUTC)
-#define DUK_FPUTC fputc
-#endif
-#if !defined(DUK_MEMZERO)
-#define DUK_MEMZERO(p,n) DUK_MEMSET((p), 0, (n))
-#endif
-#if !defined(DUK_ABORT)
-#define DUK_ABORT abort
-#endif
-#if !defined(DUK_EXIT)
-#define DUK_EXIT exit
-#endif
-
-#if !defined(DUK_DOUBLE_2TO32)
-#define DUK_DOUBLE_2TO32 4294967296.0
-#endif
-#if !defined(DUK_DOUBLE_2TO31)
-#define DUK_DOUBLE_2TO31 2147483648.0
-#endif
-
-#if !defined(DUK_DOUBLE_INFINITY)
-#undef DUK_USE_COMPUTED_INFINITY
-#if defined(DUK_F_GCC_VERSION) && (DUK_F_GCC_VERSION < 40600)
-/* GCC older than 4.6: avoid overflow warnings related to using INFINITY */
-#define DUK_DOUBLE_INFINITY (__builtin_inf())
-#elif defined(INFINITY)
-#define DUK_DOUBLE_INFINITY ((double) INFINITY)
-#elif !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC) && !defined(DUK_F_BCC)
-#define DUK_DOUBLE_INFINITY (1.0 / 0.0)
-#else
-/* In VBCC (1.0 / 0.0) results in a warning and 0.0 instead of infinity.
- * Use a computed infinity (initialized when a heap is created at the
- * latest).
- */
-#define DUK_USE_COMPUTED_INFINITY
-#define DUK_DOUBLE_INFINITY duk_computed_infinity
-#endif
-#endif
-
-#if !defined(DUK_DOUBLE_NAN)
-#undef DUK_USE_COMPUTED_NAN
-#if defined(NAN)
-#define DUK_DOUBLE_NAN NAN
-#elif !defined(DUK_F_VBCC) && !defined(DUK_F_MSVC) && !defined(DUK_F_BCC)
-#define DUK_DOUBLE_NAN (0.0 / 0.0)
-#else
-/* In VBCC (0.0 / 0.0) results in a warning and 0.0 instead of NaN.
- * In MSVC (VS2010 Express) (0.0 / 0.0) results in a compile error.
- * Use a computed NaN (initialized when a heap is created at the
- * latest).
- */
-#define DUK_USE_COMPUTED_NAN
-#define DUK_DOUBLE_NAN duk_computed_nan
-#endif
-#endif
-
-/* Many platforms are missing fpclassify() and friends, so use replacements
- * if necessary. The replacement constants (FP_NAN etc) can be anything but
- * match Linux constants now.
- */
-#undef DUK_USE_REPL_FPCLASSIFY
-#undef DUK_USE_REPL_SIGNBIT
-#undef DUK_USE_REPL_ISFINITE
-#undef DUK_USE_REPL_ISNAN
-#undef DUK_USE_REPL_ISINF
-
-/* Complex condition broken into separate parts. */
-#undef DUK_F_USE_REPL_ALL
-#if !(defined(FP_NAN) && defined(FP_INFINITE) && defined(FP_ZERO) && \
- defined(FP_SUBNORMAL) && defined(FP_NORMAL))
-/* Missing some obvious constants. */
-#define DUK_F_USE_REPL_ALL
-#elif defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC)
-/* VBCC is missing the built-ins even in C99 mode (perhaps a header issue) */
-#define DUK_F_USE_REPL_ALL
-#elif defined(DUK_F_FREEBSD) && defined(DUK_F_CLANG)
-/* Placeholder fix for (detection is wider than necessary):
- * http://llvm.org/bugs/show_bug.cgi?id=17788
- */
-#define DUK_F_USE_REPL_ALL
-#elif defined(DUK_F_UCLIBC)
-/* At least some uclibc versions have broken floating point math. For
- * example, fpclassify() can incorrectly classify certain NaN formats.
- * To be safe, use replacements.
- */
-#define DUK_F_USE_REPL_ALL
-#endif
-
-#if defined(DUK_F_USE_REPL_ALL)
-#define DUK_USE_REPL_FPCLASSIFY
-#define DUK_USE_REPL_SIGNBIT
-#define DUK_USE_REPL_ISFINITE
-#define DUK_USE_REPL_ISNAN
-#define DUK_USE_REPL_ISINF
-#define DUK_FPCLASSIFY duk_repl_fpclassify
-#define DUK_SIGNBIT duk_repl_signbit
-#define DUK_ISFINITE duk_repl_isfinite
-#define DUK_ISNAN duk_repl_isnan
-#define DUK_ISINF duk_repl_isinf
-#define DUK_FP_NAN 0
-#define DUK_FP_INFINITE 1
-#define DUK_FP_ZERO 2
-#define DUK_FP_SUBNORMAL 3
-#define DUK_FP_NORMAL 4
-#else
-#define DUK_FPCLASSIFY fpclassify
-#define DUK_SIGNBIT signbit
-#define DUK_ISFINITE isfinite
-#define DUK_ISNAN isnan
-#define DUK_ISINF isinf
-#define DUK_FP_NAN FP_NAN
-#define DUK_FP_INFINITE FP_INFINITE
-#define DUK_FP_ZERO FP_ZERO
-#define DUK_FP_SUBNORMAL FP_SUBNORMAL
-#define DUK_FP_NORMAL FP_NORMAL
-#endif
-
-#if defined(DUK_F_USE_REPL_ALL)
-#undef DUK_F_USE_REPL_ALL
-#endif
-
-/* Some math functions are C99 only. This is also an issue with some
- * embedded environments using uclibc where uclibc has been configured
- * not to provide some functions. For now, use replacements whenever
- * using uclibc.
- */
-#undef DUK_USE_MATH_FMIN
-#undef DUK_USE_MATH_FMAX
-#undef DUK_USE_MATH_ROUND
-#if defined(DUK_F_UCLIBC)
-/* uclibc may be missing these */
-#elif defined(DUK_F_AMIGAOS) && defined(DUK_F_VBCC)
-/* vbcc + AmigaOS may be missing these */
-#elif defined(DUK_F_MINT)
-/* mint clib is missing these */
-#elif !defined(DUK_F_C99) && !defined(DUK_F_CPP11)
-/* build is not C99 or C++11, play it safe */
-#else
-/* C99 or C++11, no known issues */
-#define DUK_USE_MATH_FMIN
-#define DUK_USE_MATH_FMAX
-#define DUK_USE_MATH_ROUND
-#endif
-
-/* These functions don't currently need replacement but are wrapped for
- * completeness. Because these are used as function pointers, they need
- * to be defined as concrete C functions (not macros).
- */
-#if !defined(DUK_FABS)
-#define DUK_FABS fabs
-#endif
-#if !defined(DUK_FMIN)
-#define DUK_FMIN fmin
-#endif
-#if !defined(DUK_FMAX)
-#define DUK_FMAX fmax
-#endif
-#if !defined(DUK_FLOOR)
-#define DUK_FLOOR floor
-#endif
-#if !defined(DUK_CEIL)
-#define DUK_CEIL ceil
-#endif
-#if !defined(DUK_FMOD)
-#define DUK_FMOD fmod
-#endif
-#if !defined(DUK_POW)
-#define DUK_POW pow
-#endif
-#if !defined(DUK_ACOS)
-#define DUK_ACOS acos
-#endif
-#if !defined(DUK_ASIN)
-#define DUK_ASIN asin
-#endif
-#if !defined(DUK_ATAN)
-#define DUK_ATAN atan
-#endif
-#if !defined(DUK_ATAN2)
-#define DUK_ATAN2 atan2
-#endif
-#if !defined(DUK_SIN)
-#define DUK_SIN sin
-#endif
-#if !defined(DUK_COS)
-#define DUK_COS cos
-#endif
-#if !defined(DUK_TAN)
-#define DUK_TAN tan
-#endif
-#if !defined(DUK_EXP)
-#define DUK_EXP exp
-#endif
-#if !defined(DUK_LOG)
-#define DUK_LOG log
-#endif
-#if !defined(DUK_SQRT)
-#define DUK_SQRT sqrt
-#endif
-
-/* NetBSD 6.0 x86 (at least) has a few problems with pow() semantics,
- * see test-bug-netbsd-math-pow.js. Use NetBSD specific workaround.
- * (This might be a wider problem; if so, generalize the define name.)
- */
-#undef DUK_USE_POW_NETBSD_WORKAROUND
-#if defined(DUK_F_NETBSD)
-#define DUK_USE_POW_NETBSD_WORKAROUND
-#endif
-
-/* Rely as little as possible on compiler behavior for NaN comparison,
- * signed zero handling, etc. Currently never activated but may be needed
- * for broken compilers.
- */
-#undef DUK_USE_PARANOID_MATH
-
-/* There was a curious bug where test-bi-date-canceling.js would fail e.g.
- * on 64-bit Ubuntu, gcc-4.8.1, -m32, and no -std=c99. Some date computations
- * using doubles would be optimized which then broke some corner case tests.
- * The problem goes away by adding 'volatile' to the datetime computations.
- * Not sure what the actual triggering conditions are, but using this on
- * non-C99 systems solves the known issues and has relatively little cost
- * on other platforms.
- */
-#undef DUK_USE_PARANOID_DATE_COMPUTATION
-#if !defined(DUK_F_C99)
-#define DUK_USE_PARANOID_DATE_COMPUTATION
-#endif
-
-/*
- * Byte order and double memory layout detection
- *
- * Endianness detection is a major portability hassle because the macros
- * and headers are not standardized. There's even variance across UNIX
- * platforms. Even with "standard" headers, details like underscore count
- * varies between platforms, e.g. both __BYTE_ORDER and _BYTE_ORDER are used
- * (Crossbridge has a single underscore, for instance).
- *
- * The checks below are structured with this in mind: several approaches are
- * used, and at the end we check if any of them worked. This allows generic
- * approaches to be tried first, and platform/compiler specific hacks tried
- * last. As a last resort, the user can force a specific endianness, as it's
- * not likely that automatic detection will work on the most exotic platforms.
- *
- * Duktape supports little and big endian machines. There's also support
- * for a hybrid used by some ARM machines where integers are little endian
- * but IEEE double values use a mixed order (12345678 -> 43218765). This
- * byte order for doubles is referred to as "mixed endian".
- */
-
-/* For custom platforms allow user to define byteorder explicitly.
- * Since endianness headers are not standardized, this is a useful
- * workaround for custom platforms for which endianness detection
- * is not directly supported. Perhaps custom hardware is used and
- * user cannot submit upstream patches.
- */
-#if defined(DUK_OPT_FORCE_BYTEORDER)
-#undef DUK_USE_BYTEORDER
-#if (DUK_OPT_FORCE_BYTEORDER == 1)
-#define DUK_USE_BYTEORDER 1
-#elif (DUK_OPT_FORCE_BYTEORDER == 2)
-#define DUK_USE_BYTEORDER 2
-#elif (DUK_OPT_FORCE_BYTEORDER == 3)
-#define DUK_USE_BYTEORDER 3
-#else
-#error invalid DUK_OPT_FORCE_BYTEORDER value
-#endif
-#endif /* DUK_OPT_FORCE_BYTEORDER */
-
-/* GCC and Clang provide endianness defines as built-in predefines, with
- * leading and trailing double underscores (e.g. __BYTE_ORDER__). See
- * output of "make gccpredefs" and "make clangpredefs". Clang doesn't
- * seem to provide __FLOAT_WORD_ORDER__; assume not mixed endian for clang.
- * http://gcc.gnu.org/onlinedocs/cpp/Common-Predefined-Macros.html
- */
-#if !defined(DUK_USE_BYTEORDER) && defined(__BYTE_ORDER__)
-#if defined(__ORDER_LITTLE_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__)
-#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_LITTLE_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_LITTLE_ENDIAN__)
-#define DUK_USE_BYTEORDER 1
-#elif defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
-#define DUK_USE_BYTEORDER 2
-#elif !defined(__FLOAT_WORD_ORDER__)
-/* Float word order not known, assume not a hybrid. */
-#define DUK_USE_BYTEORDER 1
-#else
-/* Byte order is little endian but cannot determine IEEE double word order. */
-#endif /* float word order */
-#elif defined(__ORDER_BIG_ENDIAN__) && (__BYTE_ORDER__ == __ORDER_BIG_ENDIAN__)
-#if defined(__FLOAT_WORD_ORDER__) && defined(__ORDER_BIG_ENDIAN__) && (__FLOAT_WORD_ORDER__ == __ORDER_BIG_ENDIAN__)
-#define DUK_USE_BYTEORDER 3
-#elif !defined(__FLOAT_WORD_ORDER__)
-/* Float word order not known, assume not a hybrid. */
-#define DUK_USE_BYTEORDER 3
-#else
-/* Byte order is big endian but cannot determine IEEE double word order. */
-#endif /* float word order */
-#else
-/* Cannot determine byte order; __ORDER_PDP_ENDIAN__ is related to 32-bit
- * integer ordering and is not relevant.
- */
-#endif /* integer byte order */
-#endif /* !defined(DUK_USE_BYTEORDER) && defined(__BYTE_ORDER__) */
-
-/* More or less standard endianness predefines provided by header files.
- * The ARM hybrid case is detected by assuming that __FLOAT_WORD_ORDER
- * will be big endian, see: http://lists.mysql.com/internals/443.
- * On some platforms some defines may be present with an empty value which
- * causes comparisons to fail: https://github.com/svaarala/duktape/issues/453.
- */
-#if !defined(DUK_USE_BYTEORDER)
-#if defined(__BYTE_ORDER) && defined(__LITTLE_ENDIAN) && (__BYTE_ORDER == __LITTLE_ENDIAN) || \
- defined(_BYTE_ORDER) && defined(_LITTLE_ENDIAN) && (_BYTE_ORDER == _LITTLE_ENDIAN) || \
- defined(__LITTLE_ENDIAN__)
-#if defined(__FLOAT_WORD_ORDER) && defined(__LITTLE_ENDIAN) && (__FLOAT_WORD_ORDER == __LITTLE_ENDIAN) || \
- defined(_FLOAT_WORD_ORDER) && defined(_LITTLE_ENDIAN) && (_FLOAT_WORD_ORDER == _LITTLE_ENDIAN)
-#define DUK_USE_BYTEORDER 1
-#elif defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \
- defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN)
-#define DUK_USE_BYTEORDER 2
-#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER)
-/* Float word order not known, assume not a hybrid. */
-#define DUK_USE_BYTEORDER 1
-#else
-/* Byte order is little endian but cannot determine IEEE double word order. */
-#endif /* float word order */
-#elif defined(__BYTE_ORDER) && defined(__BIG_ENDIAN) && (__BYTE_ORDER == __BIG_ENDIAN) || \
- defined(_BYTE_ORDER) && defined(_BIG_ENDIAN) && (_BYTE_ORDER == _BIG_ENDIAN) || \
- defined(__BIG_ENDIAN__)
-#if defined(__FLOAT_WORD_ORDER) && defined(__BIG_ENDIAN) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) || \
- defined(_FLOAT_WORD_ORDER) && defined(_BIG_ENDIAN) && (_FLOAT_WORD_ORDER == _BIG_ENDIAN)
-#define DUK_USE_BYTEORDER 3
-#elif !defined(__FLOAT_WORD_ORDER) && !defined(_FLOAT_WORD_ORDER)
-/* Float word order not known, assume not a hybrid. */
-#define DUK_USE_BYTEORDER 3
-#else
-/* Byte order is big endian but cannot determine IEEE double word order. */
-#endif /* float word order */
-#else
-/* Cannot determine byte order. */
-#endif /* integer byte order */
-#endif /* !defined(DUK_USE_BYTEORDER) */
-
-/* QNX gcc cross compiler seems to define e.g. __LITTLEENDIAN__ or __BIGENDIAN__:
- * $ /opt/qnx650/host/linux/x86/usr/bin/i486-pc-nto-qnx6.5.0-gcc -dM -E - </dev/null | grep -ni endian
- * 67:#define __LITTLEENDIAN__ 1
- * $ /opt/qnx650/host/linux/x86/usr/bin/mips-unknown-nto-qnx6.5.0-gcc -dM -E - </dev/null | grep -ni endian
- * 81:#define __BIGENDIAN__ 1
- * $ /opt/qnx650/host/linux/x86/usr/bin/arm-unknown-nto-qnx6.5.0-gcc -dM -E - </dev/null | grep -ni endian
- * 70:#define __LITTLEENDIAN__ 1
- */
-#if !defined(DUK_USE_BYTEORDER)
-#if defined(__LITTLEENDIAN__)
-#define DUK_USE_BYTEORDER 1
-#elif defined(__BIGENDIAN__)
-#define DUK_USE_BYTEORDER 3
-#endif
-#endif
-
-/*
- * Alignment requirement and support for unaligned accesses
- *
- * Assume unaligned accesses are not supported unless specifically allowed
- * in the target platform. Some platforms may support unaligned accesses
- * but alignment to 4 or 8 may still be desirable.
- */
-
-/* If not provided, use safe default for alignment. */
-#if !defined(DUK_USE_ALIGN_BY)
-#define DUK_USE_ALIGN_BY 8
-#endif
-
-/* User forced alignment to 4 or 8. */
-#if defined(DUK_OPT_FORCE_ALIGN)
-#undef DUK_USE_ALIGN_BY
-#if (DUK_OPT_FORCE_ALIGN == 4)
-#define DUK_USE_ALIGN_BY 4
-#elif (DUK_OPT_FORCE_ALIGN == 8)
-#define DUK_USE_ALIGN_BY 8
-#else
-#error invalid DUK_OPT_FORCE_ALIGN value
-#endif
-#endif
-
-/* Compiler specific hackery needed to force struct size to match aligment,
- * see e.g. duk_hbuffer.h.
- *
- * http://stackoverflow.com/questions/11130109/c-struct-size-alignment
- * http://stackoverflow.com/questions/10951039/specifying-64-bit-alignment
- */
-#if !(defined(DUK_USE_PACK_MSVC_PRAGMA) || defined(DUK_USE_PACK_GCC_ATTR) || \
- defined(DUK_USE_PACK_CLANG_ATTR) || defined(DUK_USE_PACK_DUMMY_MEMBER))
-#define DUK_USE_PACK_DUMMY_MEMBER
-#endif
-
-#if !defined(DUK_VA_COPY)
-/* We need va_copy() which is defined in C99 / C++11, so an awkward
- * replacement is needed for pre-C99 / pre-C++11 environments. This
- * will quite likely need portability hacks for some non-C99
- * environments.
- */
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-/* C99 / C++11 and above: rely on va_copy() which is required.
- * Omit parenthesis on macro right side on purpose to minimize differences
- * to direct use.
- */
-#define DUK_VA_COPY(dest,src) va_copy(dest,src)
-#else
-/* Pre-C99: va_list type is implementation dependent. This replacement
- * assumes it is a plain value so that a simple assignment will work.
- * This is not the case on all platforms (it may be a single-array element,
- * for instance).
- */
-#define DUK_VA_COPY(dest,src) do { (dest) = (src); } while (0)
-#endif
-#endif
-
-#if !defined(DUK_MACRO_STRINGIFY)
-/* Macro hackery to convert e.g. __LINE__ to a string without formatting,
- * see: http://stackoverflow.com/questions/240353/convert-a-preprocessor-token-to-a-string
- */
-#define DUK_MACRO_STRINGIFY_HELPER(x) #x
-#define DUK_MACRO_STRINGIFY(x) DUK_MACRO_STRINGIFY_HELPER(x)
-#endif
-
-#if !defined(DUK_CAUSE_SEGFAULT)
-/* This is optionally used by panic handling to cause the program to segfault
- * (instead of e.g. abort()) on panic. Valgrind will then indicate the C
- * call stack leading to the panic.
- */
-#define DUK_CAUSE_SEGFAULT() do { *((volatile duk_uint32_t *) NULL) = (duk_uint32_t) 0xdeadbeefUL; } while (0)
-#endif
-#if !defined(DUK_UNREF)
-/* Macro for suppressing warnings for potentially unreferenced variables.
- * The variables can be actually unreferenced or unreferenced in some
- * specific cases only; for instance, if a variable is only debug printed,
- * it is unreferenced when debug printing is disabled.
- */
-#define DUK_UNREF(x) do { (void) (x); } while (0)
-#endif
-#if !defined(DUK_NORETURN)
-#define DUK_NORETURN(decl) decl
-#endif
-#if !defined(DUK_UNREACHABLE)
-/* Don't know how to declare unreachable point, so don't do it; this
- * may cause some spurious compilation warnings (e.g. "variable used
- * uninitialized").
- */
-#define DUK_UNREACHABLE() do { } while (0)
-#endif
-#if !defined(DUK_LOSE_CONST)
-/* Convert any input pointer into a "void *", losing a const qualifier.
- * This is not fully portable because casting through duk_uintptr_t may
- * not work on all architectures (e.g. those with long, segmented pointers).
- */
-#define DUK_LOSE_CONST(src) ((void *) (duk_uintptr_t) (src))
-#endif
-
-#if !defined(DUK_LIKELY)
-#define DUK_LIKELY(x) (x)
-#endif
-#if !defined(DUK_UNLIKELY)
-#define DUK_UNLIKELY(x) (x)
-#endif
-
-#if !defined(DUK_NOINLINE)
-#define DUK_NOINLINE /*nop*/
-#endif
-#if !defined(DUK_INLINE)
-#define DUK_INLINE /*nop*/
-#endif
-#if !defined(DUK_ALWAYS_INLINE)
-#define DUK_ALWAYS_INLINE /*nop*/
-#endif
-
-#if !defined(DUK_EXTERNAL_DECL)
-#define DUK_EXTERNAL_DECL extern
-#endif
-#if !defined(DUK_EXTERNAL)
-#define DUK_EXTERNAL /*empty*/
-#endif
-#if !defined(DUK_INTERNAL_DECL)
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL_DECL static
-#else
-#define DUK_INTERNAL_DECL extern
-#endif
-#endif
-#if !defined(DUK_INTERNAL)
-#if defined(DUK_SINGLE_FILE)
-#define DUK_INTERNAL static
-#else
-#define DUK_INTERNAL /*empty*/
-#endif
-#endif
-#if !defined(DUK_LOCAL_DECL)
-#define DUK_LOCAL_DECL static
-#endif
-#if !defined(DUK_LOCAL)
-#define DUK_LOCAL static
-#endif
-
-#if !defined(DUK_FILE_MACRO)
-#define DUK_FILE_MACRO __FILE__
-#endif
-#if !defined(DUK_LINE_MACRO)
-#define DUK_LINE_MACRO __LINE__
-#endif
-#if !defined(DUK_FUNC_MACRO)
-#if defined(DUK_F_C99) || defined(DUK_F_CPP11)
-#define DUK_FUNC_MACRO __func__
-#elif defined(__FUNCTION__)
-#define DUK_FUNC_MACRO __FUNCTION__
-#else
-#define DUK_FUNC_MACRO "unknown"
-#endif
-#endif
-
-#if !defined(DUK_BSWAP32)
-#define DUK_BSWAP32(x) \
- ((((duk_uint32_t) (x)) >> 24) | \
- ((((duk_uint32_t) (x)) >> 8) & 0xff00UL) | \
- ((((duk_uint32_t) (x)) << 8) & 0xff0000UL) | \
- (((duk_uint32_t) (x)) << 24))
-#endif
-#if !defined(DUK_BSWAP16)
-#define DUK_BSWAP16(x) \
- ((duk_uint16_t) (x) >> 8) | \
- ((duk_uint16_t) (x) << 8)
-#endif
-
-/* DUK_USE_VARIADIC_MACROS: required from compilers, so no fill-in. */
-/* DUK_USE_UNION_INITIALIZERS: required from compilers, so no fill-in. */
-
-#if !(defined(DUK_USE_FLEX_C99) || defined(DUK_USE_FLEX_ZEROSIZE) || defined(DUK_USE_FLEX_ONESIZE))
-#if defined(DUK_F_C99)
-#define DUK_USE_FLEX_C99
-#else
-#define DUK_USE_FLEX_ZEROSIZE /* Not standard but common enough */
-#endif
-#endif
-
-#if !(defined(DUK_USE_PACK_GCC_ATTR) || defined(DUK_USE_PACK_CLANG_ATTR) || \
- defined(DUK_USE_PACK_MSVC_PRAGMA) || defined(DUK_USE_PACK_DUMMY_MEMBER))
-#define DUK_USE_PACK_DUMMY_MEMBER
-#endif
-
-#if 0 /* not defined by default */
-#undef DUK_USE_GCC_PRAGMAS
-#endif
-
-/* Workaround for GH-323: avoid inlining control when compiling from
- * multiple sources, as it causes compiler portability trouble.
- */
-#if !defined(DUK_SINGLE_FILE)
-#undef DUK_NOINLINE
-#undef DUK_INLINE
-#undef DUK_ALWAYS_INLINE
-#define DUK_NOINLINE /*nop*/
-#define DUK_INLINE /*nop*/
-#define DUK_ALWAYS_INLINE /*nop*/
-#endif
-
-/*
- * Check whether or not a packed duk_tval representation is possible.
- * What's basically required is that pointers are 32-bit values
- * (sizeof(void *) == 4). Best effort check, not always accurate.
- * If guess goes wrong, crashes may result; self tests also verify
- * the guess.
- */
-
-/* Explicit marker needed; may be 'defined', 'undefined, 'or 'not provided'. */
-#if !defined(DUK_F_PACKED_TVAL_PROVIDED)
-#undef DUK_F_PACKED_TVAL_POSSIBLE
-
-/* Strict C99 case: DUK_UINTPTR_MAX (= UINTPTR_MAX) should be very reliable */
-#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_UINTPTR_MAX)
-#if (DUK_UINTPTR_MAX <= 0xffffffffUL)
-#define DUK_F_PACKED_TVAL_POSSIBLE
-#endif
-#endif
-
-/* Non-C99 case, still relying on DUK_UINTPTR_MAX, as long as it is not a computed value */
-#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_UINTPTR_MAX) && !defined(DUK_UINTPTR_MAX_COMPUTED)
-#if (DUK_UINTPTR_MAX <= 0xffffffffUL)
-#define DUK_F_PACKED_TVAL_POSSIBLE
-#endif
-#endif
-
-/* DUK_SIZE_MAX (= SIZE_MAX) is often reliable */
-#if !defined(DUK_F_PACKED_TVAL_POSSIBLE) && defined(DUK_SIZE_MAX) && !defined(DUK_SIZE_MAX_COMPUTED)
-#if (DUK_SIZE_MAX <= 0xffffffffUL)
-#define DUK_F_PACKED_TVAL_POSSIBLE
-#endif
-#endif
-
-#undef DUK_USE_PACKED_TVAL
-#if defined(DUK_F_PACKED_TVAL_POSSIBLE)
-#define DUK_USE_PACKED_TVAL
-#endif
-
-#undef DUK_F_PACKED_TVAL_POSSIBLE
-#endif /* DUK_F_PACKED_TVAL_PROVIDED */
-
-/* Feature option forcing. */
-#if defined(DUK_OPT_NO_PACKED_TVAL)
-#undef DUK_USE_PACKED_TVAL
-#elif defined(DUK_OPT_PACKED_TVAL)
-#undef DUK_USE_PACKED_TVAL
-#define DUK_USE_PACKED_TVAL
-#endif
-/* Object property allocation layout has implications for memory and code
- * footprint and generated code size/speed. The best layout also depends
- * on whether the platform has alignment requirements or benefits from
- * having mostly aligned accesses.
- */
-#undef DUK_USE_HOBJECT_LAYOUT_1
-#undef DUK_USE_HOBJECT_LAYOUT_2
-#undef DUK_USE_HOBJECT_LAYOUT_3
-#if (DUK_USE_ALIGN_BY == 1)
-/* On platforms without any alignment issues, layout 1 is preferable
- * because it compiles to slightly less code and provides direct access
- * to property keys.
- */
-#define DUK_USE_HOBJECT_LAYOUT_1
-#else
-/* On other platforms use layout 2, which requires some padding but
- * is a bit more natural than layout 3 in ordering the entries. Layout
- * 3 is currently not used.
- */
-#define DUK_USE_HOBJECT_LAYOUT_2
-#endif
-
-/* GCC/clang inaccurate math would break compliance and probably duk_tval,
- * so refuse to compile. Relax this if -ffast-math is tested to work.
- */
-#if defined(__FAST_MATH__)
-#error __FAST_MATH__ defined, refusing to compile
-#endif
-
-/*
- * Feature option handling
- */
-
-#if !defined(DUK_USE_ALIGN_BY)
-#if defined(DUK_OPT_FORCE_ALIGN)
-#define DUK_USE_ALIGN_BY DUK_OPT_FORCE_ALIGN
-#else
-#define DUK_USE_ALIGN_BY 8
-#endif
-#endif
-
-#if defined(DUK_OPT_ASSERTIONS)
-#define DUK_USE_ASSERTIONS
-#elif defined(DUK_OPT_NO_ASSERTIONS)
-#undef DUK_USE_ASSERTIONS
-#else
-#undef DUK_USE_ASSERTIONS
-#endif
-
-#if defined(DUK_OPT_AUGMENT_ERRORS)
-#define DUK_USE_AUGMENT_ERROR_CREATE
-#elif defined(DUK_OPT_NO_AUGMENT_ERRORS)
-#undef DUK_USE_AUGMENT_ERROR_CREATE
-#else
-#define DUK_USE_AUGMENT_ERROR_CREATE
-#endif
-
-#if defined(DUK_OPT_AUGMENT_ERRORS)
-#define DUK_USE_AUGMENT_ERROR_THROW
-#elif defined(DUK_OPT_NO_AUGMENT_ERRORS)
-#undef DUK_USE_AUGMENT_ERROR_THROW
-#else
-#define DUK_USE_AUGMENT_ERROR_THROW
-#endif
-
-#if defined(DUK_OPT_BROWSER_LIKE)
-#define DUK_USE_BROWSER_LIKE
-#elif defined(DUK_OPT_NO_BROWSER_LIKE)
-#undef DUK_USE_BROWSER_LIKE
-#else
-#define DUK_USE_BROWSER_LIKE
-#endif
-
-#if defined(DUK_OPT_BUFFEROBJECT_SUPPORT)
-#define DUK_USE_BUFFEROBJECT_SUPPORT
-#elif defined(DUK_OPT_NO_BUFFEROBJECT_SUPPORT)
-#undef DUK_USE_BUFFEROBJECT_SUPPORT
-#else
-#define DUK_USE_BUFFEROBJECT_SUPPORT
-#endif
-
-#if defined(DUK_OPT_BUFLEN16)
-#define DUK_USE_BUFLEN16
-#elif defined(DUK_OPT_NO_BUFLEN16)
-#undef DUK_USE_BUFLEN16
-#else
-#undef DUK_USE_BUFLEN16
-#endif
-
-#if defined(DUK_OPT_BYTECODE_DUMP_SUPPORT)
-#define DUK_USE_BYTECODE_DUMP_SUPPORT
-#elif defined(DUK_OPT_NO_BYTECODE_DUMP_SUPPORT)
-#undef DUK_USE_BYTECODE_DUMP_SUPPORT
-#else
-#define DUK_USE_BYTECODE_DUMP_SUPPORT
-#endif
-
-#if defined(DUK_OPT_COMMONJS_MODULES)
-#define DUK_USE_COMMONJS_MODULES
-#elif defined(DUK_OPT_NO_COMMONJS_MODULES)
-#undef DUK_USE_COMMONJS_MODULES
-#else
-#define DUK_USE_COMMONJS_MODULES
-#endif
-
-#if defined(DUK_OPT_CPP_EXCEPTIONS)
-#define DUK_USE_CPP_EXCEPTIONS
-#elif defined(DUK_OPT_NO_CPP_EXCEPTIONS)
-#undef DUK_USE_CPP_EXCEPTIONS
-#else
-#undef DUK_USE_CPP_EXCEPTIONS
-#endif
-
-#if defined(DUK_OPT_DATAPTR16)
-#define DUK_USE_DATAPTR16
-#elif defined(DUK_OPT_NO_DATAPTR16)
-#undef DUK_USE_DATAPTR16
-#else
-#undef DUK_USE_DATAPTR16
-#endif
-
-#if defined(DUK_OPT_DATAPTR_DEC16)
-#define DUK_USE_DATAPTR_DEC16(udata,ptr) DUK_OPT_DATAPTR_DEC16((udata),(ptr))
-#else
-#undef DUK_USE_DATAPTR_DEC16
-#endif
-
-#if defined(DUK_OPT_DATAPTR_ENC16)
-#define DUK_USE_DATAPTR_ENC16(udata,ptr) DUK_OPT_DATAPTR_ENC16((udata),(ptr))
-#else
-#undef DUK_USE_DATAPTR_ENC16
-#endif
-
-#if defined(DUK_OPT_DDDPRINT)
-#define DUK_USE_DDDPRINT
-#elif defined(DUK_OPT_NO_DDDPRINT)
-#undef DUK_USE_DDDPRINT
-#else
-#undef DUK_USE_DDDPRINT
-#endif
-
-#if defined(DUK_OPT_DDPRINT)
-#define DUK_USE_DDPRINT
-#elif defined(DUK_OPT_NO_DDPRINT)
-#undef DUK_USE_DDPRINT
-#else
-#undef DUK_USE_DDPRINT
-#endif
-
-#if defined(DUK_OPT_DEBUG)
-#define DUK_USE_DEBUG
-#elif defined(DUK_OPT_NO_DEBUG)
-#undef DUK_USE_DEBUG
-#else
-#undef DUK_USE_DEBUG
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_DUMPHEAP)
-#define DUK_USE_DEBUGGER_DUMPHEAP
-#elif defined(DUK_OPT_NO_DEBUGGER_DUMPHEAP)
-#undef DUK_USE_DEBUGGER_DUMPHEAP
-#else
-#undef DUK_USE_DEBUGGER_DUMPHEAP
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_FWD_LOGGING)
-#define DUK_USE_DEBUGGER_FWD_LOGGING
-#elif defined(DUK_OPT_NO_DEBUGGER_FWD_LOGGING)
-#undef DUK_USE_DEBUGGER_FWD_LOGGING
-#else
-#undef DUK_USE_DEBUGGER_FWD_LOGGING
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_FWD_PRINTALERT)
-#define DUK_USE_DEBUGGER_FWD_PRINTALERT
-#elif defined(DUK_OPT_NO_DEBUGGER_FWD_PRINTALERT)
-#undef DUK_USE_DEBUGGER_FWD_PRINTALERT
-#else
-#undef DUK_USE_DEBUGGER_FWD_PRINTALERT
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_INSPECT)
-#define DUK_USE_DEBUGGER_INSPECT
-#elif defined(DUK_OPT_NO_DEBUGGER_INSPECT)
-#undef DUK_USE_DEBUGGER_INSPECT
-#else
-#undef DUK_USE_DEBUGGER_INSPECT
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_PAUSE_UNCAUGHT)
-#define DUK_USE_DEBUGGER_PAUSE_UNCAUGHT
-#elif defined(DUK_OPT_NO_DEBUGGER_PAUSE_UNCAUGHT)
-#undef DUK_USE_DEBUGGER_PAUSE_UNCAUGHT
-#else
-#undef DUK_USE_DEBUGGER_PAUSE_UNCAUGHT
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_SUPPORT)
-#define DUK_USE_DEBUGGER_SUPPORT
-#elif defined(DUK_OPT_NO_DEBUGGER_SUPPORT)
-#undef DUK_USE_DEBUGGER_SUPPORT
-#else
-#undef DUK_USE_DEBUGGER_SUPPORT
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_THROW_NOTIFY)
-#define DUK_USE_DEBUGGER_THROW_NOTIFY
-#elif defined(DUK_OPT_NO_DEBUGGER_THROW_NOTIFY)
-#undef DUK_USE_DEBUGGER_THROW_NOTIFY
-#else
-#define DUK_USE_DEBUGGER_THROW_NOTIFY
-#endif
-
-#if defined(DUK_OPT_DEBUGGER_TRANSPORT_TORTURE)
-#define DUK_USE_DEBUGGER_TRANSPORT_TORTURE
-#elif defined(DUK_OPT_NO_DEBUGGER_TRANSPORT_TORTURE)
-#undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE
-#else
-#undef DUK_USE_DEBUGGER_TRANSPORT_TORTURE
-#endif
-
-#if defined(DUK_OPT_DEBUG_BUFSIZE)
-#define DUK_USE_DEBUG_BUFSIZE DUK_OPT_DEBUG_BUFSIZE
-#else
-#define DUK_USE_DEBUG_BUFSIZE 65536L
-#endif
-
-#if defined(DUK_OPT_REFERENCE_COUNTING)
-#define DUK_USE_DOUBLE_LINKED_HEAP
-#elif defined(DUK_OPT_NO_REFERENCE_COUNTING)
-#undef DUK_USE_DOUBLE_LINKED_HEAP
-#else
-#define DUK_USE_DOUBLE_LINKED_HEAP
-#endif
-
-#if defined(DUK_OPT_DPRINT)
-#define DUK_USE_DPRINT
-#elif defined(DUK_OPT_NO_DPRINT)
-#undef DUK_USE_DPRINT
-#else
-#undef DUK_USE_DPRINT
-#endif
-
-#if defined(DUK_OPT_DPRINT_COLORS)
-#define DUK_USE_DPRINT_COLORS
-#elif defined(DUK_OPT_NO_DPRINT_COLORS)
-#undef DUK_USE_DPRINT_COLORS
-#else
-#undef DUK_USE_DPRINT_COLORS
-#endif
-
-#if defined(DUK_OPT_DPRINT_RDTSC)
-#define DUK_USE_DPRINT_RDTSC
-#elif defined(DUK_OPT_NO_DPRINT_RDTSC)
-#undef DUK_USE_DPRINT_RDTSC
-#else
-#undef DUK_USE_DPRINT_RDTSC
-#endif
-
-#if defined(DUK_OPT_AUGMENT_ERRORS)
-#define DUK_USE_ERRCREATE
-#elif defined(DUK_OPT_NO_AUGMENT_ERRORS)
-#undef DUK_USE_ERRCREATE
-#else
-#define DUK_USE_ERRCREATE
-#endif
-
-#if defined(DUK_OPT_AUGMENT_ERRORS)
-#define DUK_USE_ERRTHROW
-#elif defined(DUK_OPT_NO_AUGMENT_ERRORS)
-#undef DUK_USE_ERRTHROW
-#else
-#define DUK_USE_ERRTHROW
-#endif
-
-#if defined(DUK_OPT_ES6_OBJECT_PROTO_PROPERTY)
-#define DUK_USE_ES6_OBJECT_PROTO_PROPERTY
-#elif defined(DUK_OPT_NO_ES6_OBJECT_PROTO_PROPERTY)
-#undef DUK_USE_ES6_OBJECT_PROTO_PROPERTY
-#else
-#define DUK_USE_ES6_OBJECT_PROTO_PROPERTY
-#endif
-
-#if defined(DUK_OPT_ES6_OBJECT_SETPROTOTYPEOF)
-#define DUK_USE_ES6_OBJECT_SETPROTOTYPEOF
-#elif defined(DUK_OPT_NO_ES6_OBJECT_SETPROTOTYPEOF)
-#undef DUK_USE_ES6_OBJECT_SETPROTOTYPEOF
-#else
-#define DUK_USE_ES6_OBJECT_SETPROTOTYPEOF
-#endif
-
-#if defined(DUK_OPT_ES6_PROXY)
-#define DUK_USE_ES6_PROXY
-#elif defined(DUK_OPT_NO_ES6_PROXY)
-#undef DUK_USE_ES6_PROXY
-#else
-#define DUK_USE_ES6_PROXY
-#endif
-
-#if defined(DUK_OPT_ES6_REGEXP_BRACES)
-#define DUK_USE_ES6_REGEXP_BRACES
-#elif defined(DUK_OPT_NO_ES6_REGEXP_BRACES)
-#undef DUK_USE_ES6_REGEXP_BRACES
-#else
-#define DUK_USE_ES6_REGEXP_BRACES
-#endif
-
-#undef DUK_USE_EXEC_INDIRECT_BOUND_CHECK
-#if defined(DUK_OPT_DEBUG) || defined(DUK_OPT_ASSERTIONS)
-/* Enabled with debug/assertions just so that any issues can be caught. */
-#define DUK_USE_EXEC_INDIRECT_BOUND_CHECK
-#endif
-
-#undef DUK_USE_EXEC_TIMEOUT_CHECK
-#if defined(DUK_OPT_EXEC_TIMEOUT_CHECK)
-#define DUK_USE_EXEC_TIMEOUT_CHECK(udata) DUK_OPT_EXEC_TIMEOUT_CHECK((udata))
-#endif
-
-#undef DUK_USE_EXTSTR_FREE
-#if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_FREE)
-#define DUK_USE_EXTSTR_FREE(udata,ptr) DUK_OPT_EXTSTR_FREE((udata), (ptr))
-#endif
-
-#undef DUK_USE_EXTSTR_INTERN_CHECK
-#if defined(DUK_OPT_EXTERNAL_STRINGS) && defined(DUK_OPT_EXTSTR_INTERN_CHECK)
-#define DUK_USE_EXTSTR_INTERN_CHECK(udata,ptr,len) DUK_OPT_EXTSTR_INTERN_CHECK((udata), (ptr), (len))
-#endif
-
-/* Support for 48-bit signed integer duk_tval with transparent semantics. */
-#undef DUK_USE_FASTINT
-#if defined(DUK_OPT_FASTINT)
-#if !defined(DUK_F_HAVE_64BIT)
-#error DUK_OPT_FASTINT requires 64-bit integer type support at the moment
-#endif
-#define DUK_USE_FASTINT
-#endif
-
-#if defined(DUK_OPT_FILE_IO)
-#define DUK_USE_FILE_IO
-#elif defined(DUK_OPT_NO_FILE_IO)
-#undef DUK_USE_FILE_IO
-#else
-#define DUK_USE_FILE_IO
-#endif
-
-#if defined(DUK_OPT_FUNCPTR16)
-#define DUK_USE_FUNCPTR16
-#elif defined(DUK_OPT_NO_FUNCPTR16)
-#undef DUK_USE_FUNCPTR16
-#else
-#undef DUK_USE_FUNCPTR16
-#endif
-
-#if defined(DUK_OPT_FUNCPTR_DEC16)
-#define DUK_USE_FUNCPTR_DEC16(udata,ptr) DUK_OPT_FUNCPTR_DEC16((udata),(ptr))
-#else
-#undef DUK_USE_FUNCPTR_DEC16
-#endif
-
-#if defined(DUK_OPT_FUNCPTR_ENC16)
-#define DUK_USE_FUNCPTR_ENC16(udata,ptr) DUK_OPT_FUNCPTR_ENC16((udata),(ptr))
-#else
-#undef DUK_USE_FUNCPTR_ENC16
-#endif
-
-#if defined(DUK_OPT_GC_TORTURE)
-#define DUK_USE_GC_TORTURE
-#elif defined(DUK_OPT_NO_GC_TORTURE)
-#undef DUK_USE_GC_TORTURE
-#else
-#undef DUK_USE_GC_TORTURE
-#endif
-
-#if defined(DUK_OPT_HEAPPTR16)
-#define DUK_USE_HEAPPTR16
-#elif defined(DUK_OPT_NO_HEAPPTR16)
-#undef DUK_USE_HEAPPTR16
-#else
-#undef DUK_USE_HEAPPTR16
-#endif
-
-#if defined(DUK_OPT_HEAPPTR_DEC16)
-#define DUK_USE_HEAPPTR_DEC16(udata,ptr) DUK_OPT_HEAPPTR_DEC16((udata),(ptr))
-#else
-#undef DUK_USE_HEAPPTR_DEC16
-#endif
-
-#if defined(DUK_OPT_HEAPPTR_ENC16)
-#define DUK_USE_HEAPPTR_ENC16(udata,ptr) DUK_OPT_HEAPPTR_ENC16((udata),(ptr))
-#else
-#undef DUK_USE_HEAPPTR_ENC16
-#endif
-
-/* For now, hash part is dropped if and only if 16-bit object fields are used. */
-#define DUK_USE_HOBJECT_HASH_PART
-#if defined(DUK_OPT_OBJSIZES16)
-#undef DUK_USE_HOBJECT_HASH_PART
-#endif
-
-#if defined(DUK_OPT_HSTRING_CLEN)
-#define DUK_USE_HSTRING_CLEN
-#elif defined(DUK_OPT_NO_HSTRING_CLEN)
-#undef DUK_USE_HSTRING_CLEN
-#else
-#define DUK_USE_HSTRING_CLEN
-#endif
-
-#if defined(DUK_OPT_EXTERNAL_STRINGS)
-#define DUK_USE_HSTRING_EXTDATA
-#elif defined(DUK_OPT_NO_EXTERNAL_STRINGS)
-#undef DUK_USE_HSTRING_EXTDATA
-#else
-#undef DUK_USE_HSTRING_EXTDATA
-#endif
-
-#if defined(DUK_OPT_INTERRUPT_COUNTER)
-#define DUK_USE_INTERRUPT_COUNTER
-#elif defined(DUK_OPT_NO_INTERRUPT_COUNTER)
-#undef DUK_USE_INTERRUPT_COUNTER
-#else
-#undef DUK_USE_INTERRUPT_COUNTER
-#endif
-
-#if defined(DUK_OPT_JC)
-#define DUK_USE_JC
-#elif defined(DUK_OPT_NO_JC)
-#undef DUK_USE_JC
-#else
-#define DUK_USE_JC
-#endif
-
-#if defined(DUK_OPT_JSON_STRINGIFY_FASTPATH)
-#define DUK_USE_JSON_STRINGIFY_FASTPATH
-#elif defined(DUK_OPT_NO_JSON_STRINGIFY_FASTPATH)
-#undef DUK_USE_JSON_STRINGIFY_FASTPATH
-#else
-#undef DUK_USE_JSON_STRINGIFY_FASTPATH
-#endif
-
-#if defined(DUK_OPT_JX)
-#define DUK_USE_JX
-#elif defined(DUK_OPT_NO_JX)
-#undef DUK_USE_JX
-#else
-#define DUK_USE_JX
-#endif
-
-#if defined(DUK_OPT_LIGHTFUNC_BUILTINS)
-#define DUK_USE_LIGHTFUNC_BUILTINS
-#elif defined(DUK_OPT_NO_LIGHTFUNC_BUILTINS)
-#undef DUK_USE_LIGHTFUNC_BUILTINS
-#else
-#undef DUK_USE_LIGHTFUNC_BUILTINS
-#endif
-
-#if defined(DUK_OPT_MARK_AND_SWEEP)
-#define DUK_USE_MARK_AND_SWEEP
-#elif defined(DUK_OPT_NO_MARK_AND_SWEEP)
-#undef DUK_USE_MARK_AND_SWEEP
-#else
-#define DUK_USE_MARK_AND_SWEEP
-#endif
-
-#if defined(DUK_OPT_MS_STRINGTABLE_RESIZE)
-#define DUK_USE_MS_STRINGTABLE_RESIZE
-#elif defined(DUK_OPT_NO_MS_STRINGTABLE_RESIZE)
-#undef DUK_USE_MS_STRINGTABLE_RESIZE
-#else
-#define DUK_USE_MS_STRINGTABLE_RESIZE
-#endif
-
-#if defined(DUK_OPT_NONSTD_ARRAY_CONCAT_TRAILER)
-#define DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
-#elif defined(DUK_OPT_NO_NONSTD_ARRAY_CONCAT_TRAILER)
-#undef DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
-#else
-#define DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER
-#endif
-
-#if defined(DUK_OPT_NONSTD_ARRAY_MAP_TRAILER)
-#define DUK_USE_NONSTD_ARRAY_MAP_TRAILER
-#elif defined(DUK_OPT_NO_NONSTD_ARRAY_MAP_TRAILER)
-#undef DUK_USE_NONSTD_ARRAY_MAP_TRAILER
-#else
-#define DUK_USE_NONSTD_ARRAY_MAP_TRAILER
-#endif
-
-#if defined(DUK_OPT_NONSTD_ARRAY_SPLICE_DELCOUNT)
-#define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
-#elif defined(DUK_OPT_NO_NONSTD_ARRAY_SPLICE_DELCOUNT)
-#undef DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
-#else
-#define DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
-#endif
-
-#if defined(DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY)
-#define DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
-#elif defined(DUK_OPT_NO_NONSTD_FUNC_CALLER_PROPERTY)
-#undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
-#else
-#undef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
-#endif
-
-#if defined(DUK_OPT_NONSTD_FUNC_SOURCE_PROPERTY)
-#define DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
-#elif defined(DUK_OPT_NO_NONSTD_FUNC_SOURCE_PROPERTY)
-#undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
-#else
-#undef DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY
-#endif
-
-#if defined(DUK_OPT_NONSTD_FUNC_STMT)
-#define DUK_USE_NONSTD_FUNC_STMT
-#elif defined(DUK_OPT_NO_NONSTD_FUNC_STMT)
-#undef DUK_USE_NONSTD_FUNC_STMT
-#else
-#define DUK_USE_NONSTD_FUNC_STMT
-#endif
-
-#if defined(DUK_OPT_NONSTD_ACCESSOR_KEY_ARGUMENT)
-#define DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
-#elif defined(DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT)
-#undef DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
-#else
-#define DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
-#endif
-
-#if defined(DUK_OPT_NONSTD_JSON_ESC_U2028_U2029)
-#define DUK_USE_NONSTD_JSON_ESC_U2028_U2029
-#elif defined(DUK_OPT_NO_NONSTD_JSON_ESC_U2028_U2029)
-#undef DUK_USE_NONSTD_JSON_ESC_U2028_U2029
-#else
-#define DUK_USE_NONSTD_JSON_ESC_U2028_U2029
-#endif
-
-#if defined(DUK_OPT_NONSTD_REGEXP_DOLLAR_ESCAPE)
-#define DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE
-#elif defined(DUK_OPT_NO_NONSTD_REGEXP_DOLLAR_ESCAPE)
-#undef DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE
-#else
-#define DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE
-#endif
-
-#if defined(DUK_OPT_NONSTD_ACCESSOR_KEY_ARGUMENT)
-#define DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
-#elif defined(DUK_OPT_NO_NONSTD_ACCESSOR_KEY_ARGUMENT)
-#undef DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
-#else
-#define DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
-#endif
-
-#if defined(DUK_OPT_NONSTD_STRING_FROMCHARCODE_32BIT)
-#define DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT
-#elif defined(DUK_OPT_NO_NONSTD_STRING_FROMCHARCODE_32BIT)
-#undef DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT
-#else
-#define DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT
-#endif
-
-#if defined(DUK_OPT_OBJSIZES16)
-#define DUK_USE_OBJSIZES16
-#elif defined(DUK_OPT_NO_OBJSIZES16)
-#undef DUK_USE_OBJSIZES16
-#else
-#undef DUK_USE_OBJSIZES16
-#endif
-
-#if defined(DUK_OPT_OCTAL_SUPPORT)
-#define DUK_USE_OCTAL_SUPPORT
-#elif defined(DUK_OPT_NO_OCTAL_SUPPORT)
-#undef DUK_USE_OCTAL_SUPPORT
-#else
-#define DUK_USE_OCTAL_SUPPORT
-#endif
-
-#if defined(DUK_OPT_PACKED_TVAL)
-#define DUK_USE_PACKED_TVAL
-#elif defined(DUK_OPT_NO_PACKED_TVAL)
-#undef DUK_USE_PACKED_TVAL
-#else
-/* Already provided above */
-#endif
-
-#undef DUK_USE_PANIC_ABORT
-#if !defined(DUK_OPT_SEGFAULT_ON_PANIC)
-#define DUK_USE_PANIC_ABORT
-#endif
-
-#undef DUK_USE_PANIC_HANDLER
-#if defined(DUK_OPT_PANIC_HANDLER)
-#define DUK_USE_PANIC_HANDLER(code,msg) DUK_OPT_PANIC_HANDLER((code),(msg))
-#endif
-
-#undef DUK_USE_PANIC_SEGFAULT
-#if defined(DUK_OPT_SEGFAULT_ON_PANIC)
-#define DUK_USE_PANIC_SEGFAULT
-#endif
-
-#if defined(DUK_OPT_PARANOID_ERRORS)
-#define DUK_USE_PARANOID_ERRORS
-#elif defined(DUK_OPT_NO_PARANOID_ERRORS)
-#undef DUK_USE_PARANOID_ERRORS
-#else
-#undef DUK_USE_PARANOID_ERRORS
-#endif
-
-#if defined(DUK_OPT_PC2LINE)
-#define DUK_USE_PC2LINE
-#elif defined(DUK_OPT_NO_PC2LINE)
-#undef DUK_USE_PC2LINE
-#else
-#define DUK_USE_PC2LINE
-#endif
-
-#if defined(DUK_OPT_REFCOUNT16)
-#define DUK_USE_REFCOUNT16
-#elif defined(DUK_OPT_NO_REFCOUNT16)
-#undef DUK_USE_REFCOUNT16
-#else
-#undef DUK_USE_REFCOUNT16
-#endif
-
-#if defined(DUK_OPT_REFERENCE_COUNTING)
-#define DUK_USE_REFERENCE_COUNTING
-#elif defined(DUK_OPT_NO_REFERENCE_COUNTING)
-#undef DUK_USE_REFERENCE_COUNTING
-#else
-#define DUK_USE_REFERENCE_COUNTING
-#endif
-
-#if defined(DUK_OPT_REGEXP_CANON_WORKAROUND)
-#define DUK_USE_REGEXP_CANON_WORKAROUND
-#elif defined(DUK_OPT_NO_REGEXP_CANON_WORKAROUND)
-#undef DUK_USE_REGEXP_CANON_WORKAROUND
-#else
-#undef DUK_USE_REGEXP_CANON_WORKAROUND
-#endif
-
-#if defined(DUK_OPT_REGEXP_SUPPORT)
-#define DUK_USE_REGEXP_SUPPORT
-#elif defined(DUK_OPT_NO_REGEXP_SUPPORT)
-#undef DUK_USE_REGEXP_SUPPORT
-#else
-#define DUK_USE_REGEXP_SUPPORT
-#endif
-
-#if defined(DUK_OPT_ROM_GLOBAL_CLONE)
-#define DUK_USE_ROM_GLOBAL_CLONE
-#elif defined(DUK_OPT_NO_ROM_GLOBAL_CLONE)
-#undef DUK_USE_ROM_GLOBAL_CLONE
-#else
-#undef DUK_USE_ROM_GLOBAL_CLONE
-#endif
-
-#if defined(DUK_OPT_ROM_GLOBAL_INHERIT)
-#define DUK_USE_ROM_GLOBAL_INHERIT
-#elif defined(DUK_OPT_NO_ROM_GLOBAL_INHERIT)
-#undef DUK_USE_ROM_GLOBAL_INHERIT
-#else
-#undef DUK_USE_ROM_GLOBAL_INHERIT
-#endif
-
-#if defined(DUK_OPT_ROM_OBJECTS)
-#define DUK_USE_ROM_OBJECTS
-#elif defined(DUK_OPT_NO_ROM_OBJECTS)
-#undef DUK_USE_ROM_OBJECTS
-#else
-#undef DUK_USE_ROM_OBJECTS
-#endif
-
-#if defined(DUK_OPT_ROM_STRINGS)
-#define DUK_USE_ROM_STRINGS
-#elif defined(DUK_OPT_NO_ROM_STRINGS)
-#undef DUK_USE_ROM_STRINGS
-#else
-#undef DUK_USE_ROM_STRINGS
-#endif
-
-#if defined(DUK_OPT_SECTION_B)
-#define DUK_USE_SECTION_B
-#elif defined(DUK_OPT_NO_SECTION_B)
-#undef DUK_USE_SECTION_B
-#else
-#define DUK_USE_SECTION_B
-#endif
-
-#if defined(DUK_OPT_SELF_TESTS)
-#define DUK_USE_SELF_TESTS
-#elif defined(DUK_OPT_NO_SELF_TESTS)
-#undef DUK_USE_SELF_TESTS
-#else
-#undef DUK_USE_SELF_TESTS
-#endif
-
-#if defined(DUK_OPT_SHUFFLE_TORTURE)
-#define DUK_USE_SHUFFLE_TORTURE
-#elif defined(DUK_OPT_NO_SHUFFLE_TORTURE)
-#undef DUK_USE_SHUFFLE_TORTURE
-#else
-#undef DUK_USE_SHUFFLE_TORTURE
-#endif
-
-#if defined(DUK_OPT_SOURCE_NONBMP)
-#define DUK_USE_SOURCE_NONBMP
-#elif defined(DUK_OPT_NO_SOURCE_NONBMP)
-#undef DUK_USE_SOURCE_NONBMP
-#else
-#define DUK_USE_SOURCE_NONBMP
-#endif
-
-#if defined(DUK_OPT_STRHASH16)
-#define DUK_USE_STRHASH16
-#elif defined(DUK_OPT_NO_STRHASH16)
-#undef DUK_USE_STRHASH16
-#else
-#undef DUK_USE_STRHASH16
-#endif
-
-#if defined(DUK_OPT_STRICT_DECL)
-#define DUK_USE_STRICT_DECL
-#elif defined(DUK_OPT_NO_STRICT_DECL)
-#undef DUK_USE_STRICT_DECL
-#else
-#define DUK_USE_STRICT_DECL
-#endif
-
-#if defined(DUK_OPT_STRICT_UTF8_SOURCE)
-#define DUK_USE_STRICT_UTF8_SOURCE
-#elif defined(DUK_OPT_NO_STRICT_UTF8_SOURCE)
-#undef DUK_USE_STRICT_UTF8_SOURCE
-#else
-#undef DUK_USE_STRICT_UTF8_SOURCE
-#endif
-
-#if defined(DUK_OPT_STRLEN16)
-#define DUK_USE_STRLEN16
-#elif defined(DUK_OPT_NO_STRLEN16)
-#undef DUK_USE_STRLEN16
-#else
-#undef DUK_USE_STRLEN16
-#endif
-
-#undef DUK_USE_STRTAB_CHAIN
-#if defined(DUK_OPT_STRTAB_CHAIN) && defined(DUK_OPT_STRTAB_CHAIN_SIZE)
-#define DUK_USE_STRTAB_CHAIN
-#endif
-
-#undef DUK_USE_STRTAB_CHAIN_SIZE
-#if defined(DUK_OPT_STRTAB_CHAIN) && defined(DUK_OPT_STRTAB_CHAIN_SIZE)
-/* Low memory algorithm: separate chaining using arrays, fixed size hash */
-#define DUK_USE_STRTAB_CHAIN_SIZE DUK_OPT_STRTAB_CHAIN_SIZE
-#endif
-
-#undef DUK_USE_STRTAB_PROBE
-#if !(defined(DUK_OPT_STRTAB_CHAIN) && defined(DUK_OPT_STRTAB_CHAIN_SIZE))
-#define DUK_USE_STRTAB_PROBE
-#endif
-
-#if defined(DUK_OPT_NONSTD_FUNC_CALLER_PROPERTY)
-#undef DUK_USE_TAILCALL
-#else
-#define DUK_USE_TAILCALL
-#endif
-
-#if defined(DUK_OPT_TARGET_INFO)
-#define DUK_USE_TARGET_INFO DUK_OPT_TARGET_INFO
-#else
-#define DUK_USE_TARGET_INFO "unknown"
-#endif
-
-#if defined(DUK_OPT_NO_AUGMENT_ERRORS)
-#undef DUK_USE_TRACEBACKS
-#elif defined(DUK_OPT_NO_TRACEBACKS)
-#undef DUK_USE_TRACEBACKS
-#else
-#define DUK_USE_TRACEBACKS
-#endif
-
-#if defined(DUK_OPT_TRACEBACK_DEPTH)
-#define DUK_USE_TRACEBACK_DEPTH DUK_OPT_TRACEBACK_DEPTH
-#else
-#define DUK_USE_TRACEBACK_DEPTH 10
-#endif
-
-#if defined(DUK_OPT_DECLARE)
-#define DUK_USE_USER_DECLARE() DUK_OPT_DECLARE
-#else
-#define DUK_USE_USER_DECLARE() /* no user declarations */
-#endif
-
-/* User provided InitJS. */
-#undef DUK_USE_USER_INITJS
-#if defined(DUK_OPT_USER_INITJS)
-#define DUK_USE_USER_INITJS (DUK_OPT_USER_INITJS)
-#endif
-
-#if defined(DUK_OPT_VERBOSE_ERRORS)
-#define DUK_USE_VERBOSE_ERRORS
-#elif defined(DUK_OPT_NO_VERBOSE_ERRORS)
-#undef DUK_USE_VERBOSE_ERRORS
-#else
-#define DUK_USE_VERBOSE_ERRORS
-#endif
-
-#if defined(DUK_OPT_VOLUNTARY_GC)
-#define DUK_USE_VOLUNTARY_GC
-#elif defined(DUK_OPT_NO_VOLUNTARY_GC)
-#undef DUK_USE_VOLUNTARY_GC
-#else
-#define DUK_USE_VOLUNTARY_GC
-#endif
-
-#if defined(DUK_OPT_ZERO_BUFFER_DATA)
-#define DUK_USE_ZERO_BUFFER_DATA
-#elif defined(DUK_OPT_NO_ZERO_BUFFER_DATA)
-#undef DUK_USE_ZERO_BUFFER_DATA
-#else
-#define DUK_USE_ZERO_BUFFER_DATA
-#endif
-
-/*
- * Autogenerated defaults
- */
-
-#define DUK_USE_AVOID_PLATFORM_FUNCPTRS
-#define DUK_USE_BASE64_FASTPATH
-#define DUK_USE_BUILTIN_INITJS
-#define DUK_USE_COMPILER_RECLIMIT 2500
-#undef DUK_USE_DATE_FORMAT_STRING
-#undef DUK_USE_DATE_GET_LOCAL_TZOFFSET
-#undef DUK_USE_DATE_GET_NOW
-#undef DUK_USE_DATE_PARSE_STRING
-#undef DUK_USE_DATE_PRS_GETDATE
-#define DUK_USE_ESBC_LIMITS
-#define DUK_USE_ESBC_MAX_BYTES 2147418112L
-#define DUK_USE_ESBC_MAX_LINENUMBER 2147418112L
-#undef DUK_USE_EXEC_FUN_LOCAL
-#undef DUK_USE_EXPLICIT_NULL_INIT
-#define DUK_USE_FAST_REFCOUNT_DEFAULT
-#define DUK_USE_HEX_FASTPATH
-#define DUK_USE_IDCHAR_FASTPATH
-#undef DUK_USE_INTERRUPT_DEBUG_FIXUP
-#define DUK_USE_JSON_DECNUMBER_FASTPATH
-#define DUK_USE_JSON_DECSTRING_FASTPATH
-#define DUK_USE_JSON_DEC_RECLIMIT 1000
-#define DUK_USE_JSON_EATWHITE_FASTPATH
-#define DUK_USE_JSON_ENC_RECLIMIT 1000
-#define DUK_USE_JSON_QUOTESTRING_FASTPATH
-#define DUK_USE_LEXER_SLIDING_WINDOW
-#undef DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE
-#define DUK_USE_MARK_AND_SWEEP_RECLIMIT 256
-#define DUK_USE_MATH_BUILTIN
-#define DUK_USE_NATIVE_CALL_RECLIMIT 1000
-#undef DUK_USE_PANIC_EXIT
-#undef DUK_USE_PREFER_SIZE
-#define DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS
-#undef DUK_USE_REFZERO_FINALIZER_TORTURE
-#define DUK_USE_REGEXP_COMPILER_RECLIMIT 10000
-#define DUK_USE_REGEXP_EXECUTOR_RECLIMIT 10000
-#define DUK_USE_ROM_PTRCOMP_FIRST 63488L
-#undef DUK_USE_STRHASH_DENSE
-#define DUK_USE_STRHASH_SKIP_SHIFT 5
-#undef DUK_USE_VALSTACK_UNSAFE
-#define DUK_USE_VERBOSE_EXECUTOR_ERRORS
-
-/*
- * Alternative customization header
- *
- * If you want to modify the final DUK_USE_xxx flags directly (without
- * using the available DUK_OPT_xxx flags), define DUK_OPT_HAVE_CUSTOM_H
- * and tweak the final flags there.
- */
-
-#if defined(DUK_OPT_HAVE_CUSTOM_H)
-#include "duk_custom.h"
-#endif
-
-/*
- * You may add overriding #define/#undef directives below for
- * customization. You of course cannot un-#include or un-typedef
- * anything; these require direct changes above.
- */
-
-/* __OVERRIDE_DEFINES__ */
-
-/*
- * Date provider selection
- *
- * User may define DUK_USE_DATE_GET_NOW() etc directly, in which case we'll
- * rely on an external provider. If this is not done, revert to previous
- * behavior and use Unix/Windows built-in provider.
- */
-
-#if defined(DUK_COMPILING_DUKTAPE)
-
-#if defined(DUK_USE_DATE_GET_NOW)
-/* External provider already defined. */
-#elif defined(DUK_USE_DATE_NOW_GETTIMEOFDAY)
-#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_gettimeofday((ctx))
-#elif defined(DUK_USE_DATE_NOW_TIME)
-#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_time((ctx))
-#elif defined(DUK_USE_DATE_NOW_WINDOWS)
-#define DUK_USE_DATE_GET_NOW(ctx) duk_bi_date_get_now_windows((ctx))
-#else
-#error no provider for DUK_USE_DATE_GET_NOW()
-#endif
-
-#if defined(DUK_USE_DATE_GET_LOCAL_TZOFFSET)
-/* External provider already defined. */
-#elif defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME)
-#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_gmtime((d))
-#elif defined(DUK_USE_DATE_TZO_WINDOWS)
-#define DUK_USE_DATE_GET_LOCAL_TZOFFSET(d) duk_bi_date_get_local_tzoffset_windows((d))
-#else
-#error no provider for DUK_USE_DATE_GET_LOCAL_TZOFFSET()
-#endif
-
-#if defined(DUK_USE_DATE_PARSE_STRING)
-/* External provider already defined. */
-#elif defined(DUK_USE_DATE_PRS_STRPTIME)
-#define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_strptime((ctx), (str))
-#elif defined(DUK_USE_DATE_PRS_GETDATE)
-#define DUK_USE_DATE_PARSE_STRING(ctx,str) duk_bi_date_parse_string_getdate((ctx), (str))
-#else
-/* No provider for DUK_USE_DATE_PARSE_STRING(), fall back to ISO 8601 only. */
-#endif
-
-#if defined(DUK_USE_DATE_FORMAT_STRING)
-/* External provider already defined. */
-#elif defined(DUK_USE_DATE_FMT_STRFTIME)
-#define DUK_USE_DATE_FORMAT_STRING(ctx,parts,tzoffset,flags) \
- duk_bi_date_format_parts_strftime((ctx), (parts), (tzoffset), (flags))
-#else
-/* No provider for DUK_USE_DATE_FORMAT_STRING(), fall back to ISO 8601 only. */
-#endif
-
-#endif /* DUK_COMPILING_DUKTAPE */
-
-/*
- * Checks for config option consistency (DUK_USE_xxx)
- */
-
-#if defined(DUK_USE_32BIT_PTRS)
-#error unsupported config option used (option has been removed): DUK_USE_32BIT_PTRS
-#endif
-#if defined(DUK_USE_ALIGN_4)
-#error unsupported config option used (option has been removed): DUK_USE_ALIGN_4
-#endif
-#if defined(DUK_USE_ALIGN_8)
-#error unsupported config option used (option has been removed): DUK_USE_ALIGN_8
-#endif
-#if defined(DUK_USE_BYTEORDER_FORCED)
-#error unsupported config option used (option has been removed): DUK_USE_BYTEORDER_FORCED
-#endif
-#if defined(DUK_USE_DATAPTR_DEC16) && !defined(DUK_USE_DATAPTR16)
-#error config option DUK_USE_DATAPTR_DEC16 requires option DUK_USE_DATAPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_DATAPTR_ENC16) && !defined(DUK_USE_DATAPTR16)
-#error config option DUK_USE_DATAPTR_ENC16 requires option DUK_USE_DATAPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_DEBUGGER_SUPPORT) && !defined(DUK_USE_INTERRUPT_COUNTER)
-#error config option DUK_USE_DEBUGGER_SUPPORT requires option DUK_USE_INTERRUPT_COUNTER (which is missing)
-#endif
-#if defined(DUK_USE_DEEP_C_STACK)
-#error unsupported config option used (option has been removed): DUK_USE_DEEP_C_STACK
-#endif
-#if defined(DUK_USE_DOUBLE_BE)
-#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_BE
-#endif
-#if defined(DUK_USE_DOUBLE_BE) && defined(DUK_USE_DOUBLE_LE)
-#error config option DUK_USE_DOUBLE_BE conflicts with option DUK_USE_DOUBLE_LE (which is also defined)
-#endif
-#if defined(DUK_USE_DOUBLE_BE) && defined(DUK_USE_DOUBLE_ME)
-#error config option DUK_USE_DOUBLE_BE conflicts with option DUK_USE_DOUBLE_ME (which is also defined)
-#endif
-#if defined(DUK_USE_DOUBLE_LE)
-#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_LE
-#endif
-#if defined(DUK_USE_DOUBLE_LE) && defined(DUK_USE_DOUBLE_BE)
-#error config option DUK_USE_DOUBLE_LE conflicts with option DUK_USE_DOUBLE_BE (which is also defined)
-#endif
-#if defined(DUK_USE_DOUBLE_LE) && defined(DUK_USE_DOUBLE_ME)
-#error config option DUK_USE_DOUBLE_LE conflicts with option DUK_USE_DOUBLE_ME (which is also defined)
-#endif
-#if defined(DUK_USE_DOUBLE_ME)
-#error unsupported config option used (option has been removed): DUK_USE_DOUBLE_ME
-#endif
-#if defined(DUK_USE_DOUBLE_ME) && defined(DUK_USE_DOUBLE_LE)
-#error config option DUK_USE_DOUBLE_ME conflicts with option DUK_USE_DOUBLE_LE (which is also defined)
-#endif
-#if defined(DUK_USE_DOUBLE_ME) && defined(DUK_USE_DOUBLE_BE)
-#error config option DUK_USE_DOUBLE_ME conflicts with option DUK_USE_DOUBLE_BE (which is also defined)
-#endif
-#if defined(DUK_USE_DPRINT) && !defined(DUK_USE_DEBUG)
-#error config option DUK_USE_DPRINT requires option DUK_USE_DEBUG (which is missing)
-#endif
-#if defined(DUK_USE_ESBC_MAX_BYTES) && !defined(DUK_USE_ESBC_LIMITS)
-#error config option DUK_USE_ESBC_MAX_BYTES requires option DUK_USE_ESBC_LIMITS (which is missing)
-#endif
-#if defined(DUK_USE_ESBC_MAX_LINENUMBER) && !defined(DUK_USE_ESBC_LIMITS)
-#error config option DUK_USE_ESBC_MAX_LINENUMBER requires option DUK_USE_ESBC_LIMITS (which is missing)
-#endif
-#if defined(DUK_USE_EXEC_TIMEOUT_CHECK) && !defined(DUK_USE_INTERRUPT_COUNTER)
-#error config option DUK_USE_EXEC_TIMEOUT_CHECK requires option DUK_USE_INTERRUPT_COUNTER (which is missing)
-#endif
-#if defined(DUK_USE_EXTSTR_FREE) && !defined(DUK_USE_HSTRING_EXTDATA)
-#error config option DUK_USE_EXTSTR_FREE requires option DUK_USE_HSTRING_EXTDATA (which is missing)
-#endif
-#if defined(DUK_USE_EXTSTR_INTERN_CHECK) && !defined(DUK_USE_HSTRING_EXTDATA)
-#error config option DUK_USE_EXTSTR_INTERN_CHECK requires option DUK_USE_HSTRING_EXTDATA (which is missing)
-#endif
-#if defined(DUK_USE_FULL_TVAL)
-#error unsupported config option used (option has been removed): DUK_USE_FULL_TVAL
-#endif
-#if defined(DUK_USE_FUNCPTR_DEC16) && !defined(DUK_USE_FUNCPTR16)
-#error config option DUK_USE_FUNCPTR_DEC16 requires option DUK_USE_FUNCPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_FUNCPTR_ENC16) && !defined(DUK_USE_FUNCPTR16)
-#error config option DUK_USE_FUNCPTR_ENC16 requires option DUK_USE_FUNCPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS)
-#error unsupported config option used (option has been removed): DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS
-#endif
-#if defined(DUK_USE_HEAPPTR16) && defined(DUK_USE_DEBUG)
-#error config option DUK_USE_HEAPPTR16 conflicts with option DUK_USE_DEBUG (which is also defined)
-#endif
-#if defined(DUK_USE_HEAPPTR_DEC16) && !defined(DUK_USE_HEAPPTR16)
-#error config option DUK_USE_HEAPPTR_DEC16 requires option DUK_USE_HEAPPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_HEAPPTR_ENC16) && !defined(DUK_USE_HEAPPTR16)
-#error config option DUK_USE_HEAPPTR_ENC16 requires option DUK_USE_HEAPPTR16 (which is missing)
-#endif
-#if defined(DUK_USE_INTEGER_BE)
-#error unsupported config option used (option has been removed): DUK_USE_INTEGER_BE
-#endif
-#if defined(DUK_USE_INTEGER_BE) && defined(DUK_USE_INTEGER_LE)
-#error config option DUK_USE_INTEGER_BE conflicts with option DUK_USE_INTEGER_LE (which is also defined)
-#endif
-#if defined(DUK_USE_INTEGER_BE) && defined(DUK_USE_INTEGER_ME)
-#error config option DUK_USE_INTEGER_BE conflicts with option DUK_USE_INTEGER_ME (which is also defined)
-#endif
-#if defined(DUK_USE_INTEGER_LE)
-#error unsupported config option used (option has been removed): DUK_USE_INTEGER_LE
-#endif
-#if defined(DUK_USE_INTEGER_LE) && defined(DUK_USE_INTEGER_BE)
-#error config option DUK_USE_INTEGER_LE conflicts with option DUK_USE_INTEGER_BE (which is also defined)
-#endif
-#if defined(DUK_USE_INTEGER_LE) && defined(DUK_USE_INTEGER_ME)
-#error config option DUK_USE_INTEGER_LE conflicts with option DUK_USE_INTEGER_ME (which is also defined)
-#endif
-#if defined(DUK_USE_INTEGER_ME)
-#error unsupported config option used (option has been removed): DUK_USE_INTEGER_ME
-#endif
-#if defined(DUK_USE_INTEGER_ME) && defined(DUK_USE_INTEGER_LE)
-#error config option DUK_USE_INTEGER_ME conflicts with option DUK_USE_INTEGER_LE (which is also defined)
-#endif
-#if defined(DUK_USE_INTEGER_ME) && defined(DUK_USE_INTEGER_BE)
-#error config option DUK_USE_INTEGER_ME conflicts with option DUK_USE_INTEGER_BE (which is also defined)
-#endif
-#if defined(DUK_USE_NO_DOUBLE_ALIASING_SELFTEST)
-#error unsupported config option used (option has been removed): DUK_USE_NO_DOUBLE_ALIASING_SELFTEST
-#endif
-#if defined(DUK_USE_PACKED_TVAL_POSSIBLE)
-#error unsupported config option used (option has been removed): DUK_USE_PACKED_TVAL_POSSIBLE
-#endif
-#if defined(DUK_USE_RDTSC)
-#error unsupported config option used (option has been removed): DUK_USE_RDTSC
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_CLONE) && !defined(DUK_USE_ROM_STRINGS)
-#error config option DUK_USE_ROM_GLOBAL_CLONE requires option DUK_USE_ROM_STRINGS (which is missing)
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_CLONE) && !defined(DUK_USE_ROM_OBJECTS)
-#error config option DUK_USE_ROM_GLOBAL_CLONE requires option DUK_USE_ROM_OBJECTS (which is missing)
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_CLONE) && defined(DUK_USE_ROM_GLOBAL_INHERIT)
-#error config option DUK_USE_ROM_GLOBAL_CLONE conflicts with option DUK_USE_ROM_GLOBAL_INHERIT (which is also defined)
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && !defined(DUK_USE_ROM_STRINGS)
-#error config option DUK_USE_ROM_GLOBAL_INHERIT requires option DUK_USE_ROM_STRINGS (which is missing)
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && !defined(DUK_USE_ROM_OBJECTS)
-#error config option DUK_USE_ROM_GLOBAL_INHERIT requires option DUK_USE_ROM_OBJECTS (which is missing)
-#endif
-#if defined(DUK_USE_ROM_GLOBAL_INHERIT) && defined(DUK_USE_ROM_GLOBAL_CLONE)
-#error config option DUK_USE_ROM_GLOBAL_INHERIT conflicts with option DUK_USE_ROM_GLOBAL_CLONE (which is also defined)
-#endif
-#if defined(DUK_USE_ROM_OBJECTS) && !defined(DUK_USE_ROM_STRINGS)
-#error config option DUK_USE_ROM_OBJECTS requires option DUK_USE_ROM_STRINGS (which is missing)
-#endif
-#if defined(DUK_USE_ROM_STRINGS) && !defined(DUK_USE_ROM_OBJECTS)
-#error config option DUK_USE_ROM_STRINGS requires option DUK_USE_ROM_OBJECTS (which is missing)
-#endif
-#if defined(DUK_USE_SETJMP)
-#error unsupported config option used (option has been removed): DUK_USE_SETJMP
-#endif
-#if defined(DUK_USE_SIGSETJMP)
-#error unsupported config option used (option has been removed): DUK_USE_SIGSETJMP
-#endif
-#if defined(DUK_USE_STRTAB_CHAIN_SIZE) && !defined(DUK_USE_STRTAB_CHAIN)
-#error config option DUK_USE_STRTAB_CHAIN_SIZE requires option DUK_USE_STRTAB_CHAIN (which is missing)
-#endif
-#if defined(DUK_USE_TAILCALL) && defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
-#error config option DUK_USE_TAILCALL conflicts with option DUK_USE_NONSTD_FUNC_CALLER_PROPERTY (which is also defined)
-#endif
-#if defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE)
-#error unsupported config option used (option has been removed): DUK_USE_UNALIGNED_ACCESSES_POSSIBLE
-#endif
-#if defined(DUK_USE_UNDERSCORE_SETJMP)
-#error unsupported config option used (option has been removed): DUK_USE_UNDERSCORE_SETJMP
-#endif
-
-#if defined(DUK_USE_CPP_EXCEPTIONS) && !defined(__cplusplus)
-#error DUK_USE_CPP_EXCEPTIONS enabled but not compiling with a C++ compiler
-#endif
-
-/*
- * Convert DUK_USE_BYTEORDER, from whatever source, into currently used
- * internal defines. If detection failed, #error out.
- */
-
-#if defined(DUK_USE_BYTEORDER)
-#if (DUK_USE_BYTEORDER == 1)
-#define DUK_USE_INTEGER_LE
-#define DUK_USE_DOUBLE_LE
-#elif (DUK_USE_BYTEORDER == 2)
-#define DUK_USE_INTEGER_LE /* integer endianness is little on purpose */
-#define DUK_USE_DOUBLE_ME
-#elif (DUK_USE_BYTEORDER == 3)
-#define DUK_USE_INTEGER_BE
-#define DUK_USE_DOUBLE_BE
-#else
-#error unsupported: byte order invalid
-#endif /* byte order */
-#else
-#error unsupported: byte order detection failed
-#endif /* defined(DUK_USE_BYTEORDER) */
-
-#endif /* DUK_CONFIG_H_INCLUDED */
diff --git a/javascript/duktape/duk_custom.h b/javascript/duktape/duk_custom.h
deleted file mode 100644
index 1f98b7825..000000000
--- a/javascript/duktape/duk_custom.h
+++ /dev/null
@@ -1,37 +0,0 @@
-/*
- * Copyright 2015 Daniel Silverstone <dsilvers@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * Custom configuration for duktape
- */
-
-#include "utils/config.h"
-
-#ifndef HAVE_STRPTIME
-#undef DUK_USE_DATE_PRS_STRPTIME
-#undef DUK_USE_DATE_PRS_GETDATE
-#undef DUK_USE_DATE_PARSE_STRING
-#endif
-
-#define DUK_USE_REGEXP_CANON_WORKAROUND
-
-/* Required for execution timeout checking */
-#define DUK_USE_INTERRUPT_COUNTER
-
-extern duk_bool_t dukky_check_timeout(void *udata);
-#define DUK_USE_EXEC_TIMEOUT_CHECK dukky_check_timeout
diff --git a/javascript/duktape/dukky.c b/javascript/duktape/dukky.c
deleted file mode 100644
index 7dd3bd71e..000000000
--- a/javascript/duktape/dukky.c
+++ /dev/null
@@ -1,1135 +0,0 @@
-/*
- * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
- * Copyright 2015 Daniel Dilverstone <dsilvers@netsurf-browser.org>
- * Copyright 2016 Michael Drake <tlsa@netsurf-browser.org>
- * Copyright 2016 John-Mark Bell <jmb@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * Duktapeish implementation of javascript engine functions.
- */
-
-#include <inttypes.h>
-
-#include <nsutils/time.h>
-
-#include "content/content.h"
-
-#include "utils/utils.h"
-#include "utils/nsoption.h"
-#include "utils/log.h"
-#include "utils/corestrings.h"
-
-#include "javascript/js.h"
-#include "javascript/content.h"
-
-#include "duktape/binding.h"
-
-#include "duktape.h"
-#include "dukky.h"
-
-#include <dom/dom.h>
-
-#define EVENT_MAGIC MAGIC(EVENT_MAP)
-#define HANDLER_LISTENER_MAGIC MAGIC(HANDLER_LISTENER_MAP)
-#define HANDLER_MAGIC MAGIC(HANDLER_MAP)
-
-static duk_ret_t dukky_populate_object(duk_context *ctx)
-{
- /* ... obj args protoname nargs */
- int nargs = duk_get_int(ctx, -1);
- duk_pop(ctx);
- /* ... obj args protoname */
- duk_get_global_string(ctx, PROTO_MAGIC);
- /* .. obj args protoname prototab */
- duk_insert(ctx, -2);
- /* ... obj args prototab protoname */
- duk_get_prop(ctx, -2);
- /* ... obj args prototab {proto/undefined} */
- if (duk_is_undefined(ctx, -1)) {
- LOG("RuhRoh, couldn't find a prototype, HTMLUnknownElement it is");
- duk_pop(ctx);
- duk_push_string(ctx, PROTO_NAME(HTMLUNKNOWNELEMENT));
- duk_get_prop(ctx, -2);
- }
- /* ... obj args prototab proto */
- duk_dup(ctx, -1);
- /* ... obj args prototab proto proto */
- duk_set_prototype(ctx, -(nargs+4));
- /* ... obj[proto] args prototab proto */
- duk_get_prop_string(ctx, -1, INIT_MAGIC);
- /* ... obj[proto] args prototab proto initfn */
- duk_insert(ctx, -(nargs+4));
- /* ... initfn obj[proto] args prototab proto */
- duk_pop_2(ctx);
- /* ... initfn obj[proto] args */
- LOG("Call the init function");
- duk_call(ctx, nargs + 1);
- return 1; /* The object */
-}
-
-duk_ret_t dukky_create_object(duk_context *ctx, const char *name, int args)
-{
- duk_ret_t ret;
- LOG("name=%s nargs=%d", name+2, args);
- /* ... args */
- duk_push_object(ctx);
- /* ... args obj */
- duk_push_object(ctx);
- /* ... args obj handlers */
- duk_put_prop_string(ctx, -2, HANDLER_LISTENER_MAGIC);
- /* ... args obj */
- duk_push_object(ctx);
- /* ... args obj handlers */
- duk_put_prop_string(ctx, -2, HANDLER_MAGIC);
- /* ... args obj */
- duk_insert(ctx, -(args+1));
- /* ... obj args */
- duk_push_string(ctx, name);
- /* ... obj args name */
- duk_push_int(ctx, args);
- /* ... obj args name nargs */
- if ((ret = duk_safe_call(ctx, dukky_populate_object, args + 3, 1))
- != DUK_EXEC_SUCCESS)
- return ret;
- LOG("created");
- return DUK_EXEC_SUCCESS;
-}
-
-
-
-duk_bool_t
-dukky_push_node_stacked(duk_context *ctx)
-{
- int top_at_fail = duk_get_top(ctx) - 2;
- /* ... nodeptr klass */
- duk_get_global_string(ctx, NODE_MAGIC);
- /* ... nodeptr klass nodes */
- duk_dup(ctx, -3);
- /* ... nodeptr klass nodes nodeptr */
- duk_get_prop(ctx, -2);
- /* ... nodeptr klass nodes node/undefined */
- if (duk_is_undefined(ctx, -1)) {
- /* ... nodeptr klass nodes undefined */
- duk_pop(ctx);
- /* ... nodeptr klass nodes */
- duk_push_object(ctx);
- /* ... nodeptr klass nodes obj */
- duk_push_object(ctx);
- /* ... nodeptr klass nodes obj handlers */
- duk_put_prop_string(ctx, -2, HANDLER_LISTENER_MAGIC);
- /* ... nodeptr klass nodes obj */
- duk_push_object(ctx);
- /* ... nodeptr klass nodes obj handlers */
- duk_put_prop_string(ctx, -2, HANDLER_MAGIC);
- /* ... nodeptr klass nodes obj */
- duk_dup(ctx, -4);
- /* ... nodeptr klass nodes obj nodeptr */
- duk_dup(ctx, -4);
- /* ... nodeptr klass nodes obj nodeptr klass */
- duk_push_int(ctx, 1);
- /* ... nodeptr klass nodes obj nodeptr klass 1 */
- if (duk_safe_call(ctx, dukky_populate_object, 4, 1)
- != DUK_EXEC_SUCCESS) {
- duk_set_top(ctx, top_at_fail);
- LOG("Boo and also hiss");
- return false;
- }
- /* ... nodeptr klass nodes node */
- duk_dup(ctx, -4);
- /* ... nodeptr klass nodes node nodeptr */
- duk_dup(ctx, -2);
- /* ... nodeptr klass nodes node nodeptr node */
- duk_put_prop(ctx, -4);
- /* ... nodeptr klass nodes node */
- }
- /* ... nodeptr klass nodes node */
- duk_insert(ctx, -4);
- /* ... node nodeptr klass nodes */
- duk_pop_3(ctx);
- /* ... node */
- return true;
-}
-
-#define SET_HTML_CLASS(CLASS) \
- *html_class = PROTO_NAME(HTML##CLASS##ELEMENT); \
- *html_class_len = \
- SLEN(PROTO_NAME(HTML)) + \
- SLEN(#CLASS) + \
- SLEN("ELEMENT");
-
-static void dukky_html_element_class_from_tag_type(dom_html_element_type type,
- const char **html_class, size_t *html_class_len)
-{
- switch(type) {
- case DOM_HTML_ELEMENT_TYPE_HTML:
- SET_HTML_CLASS(HTML)
- break;
- case DOM_HTML_ELEMENT_TYPE_HEAD:
- SET_HTML_CLASS(HEAD)
- break;
- case DOM_HTML_ELEMENT_TYPE_META:
- SET_HTML_CLASS(META)
- break;
- case DOM_HTML_ELEMENT_TYPE_BASE:
- SET_HTML_CLASS(BASE)
- break;
- case DOM_HTML_ELEMENT_TYPE_TITLE:
- SET_HTML_CLASS(TITLE)
- break;
- case DOM_HTML_ELEMENT_TYPE_BODY:
- SET_HTML_CLASS(BODY)
- break;
- case DOM_HTML_ELEMENT_TYPE_DIV:
- SET_HTML_CLASS(DIV)
- break;
- case DOM_HTML_ELEMENT_TYPE_FORM:
- SET_HTML_CLASS(FORM)
- break;
- case DOM_HTML_ELEMENT_TYPE_LINK:
- SET_HTML_CLASS(LINK)
- break;
- case DOM_HTML_ELEMENT_TYPE_BUTTON:
- SET_HTML_CLASS(BUTTOM)
- break;
- case DOM_HTML_ELEMENT_TYPE_INPUT:
- SET_HTML_CLASS(INPUT)
- break;
- case DOM_HTML_ELEMENT_TYPE_TEXTAREA:
- SET_HTML_CLASS(TEXTAREA)
- break;
- case DOM_HTML_ELEMENT_TYPE_OPTGROUP:
- SET_HTML_CLASS(OPTGROUP)
- break;
- case DOM_HTML_ELEMENT_TYPE_OPTION:
- SET_HTML_CLASS(OPTION)
- break;
- case DOM_HTML_ELEMENT_TYPE_SELECT:
- SET_HTML_CLASS(SELECT)
- break;
- case DOM_HTML_ELEMENT_TYPE_HR:
- SET_HTML_CLASS(HR)
- break;
- case DOM_HTML_ELEMENT_TYPE_DL:
- SET_HTML_CLASS(DLIST)
- break;
- case DOM_HTML_ELEMENT_TYPE_DIR:
- SET_HTML_CLASS(DIRECTORY)
- break;
- case DOM_HTML_ELEMENT_TYPE_MENU:
- SET_HTML_CLASS(MENU)
- break;
- case DOM_HTML_ELEMENT_TYPE_FIELDSET:
- SET_HTML_CLASS(FIELDSET)
- break;
- case DOM_HTML_ELEMENT_TYPE_LEGEND:
- SET_HTML_CLASS(LEGEND)
- break;
- case DOM_HTML_ELEMENT_TYPE_P:
- SET_HTML_CLASS(PARAGRAPH)
- break;
- case DOM_HTML_ELEMENT_TYPE_H1:
- case DOM_HTML_ELEMENT_TYPE_H2:
- case DOM_HTML_ELEMENT_TYPE_H3:
- case DOM_HTML_ELEMENT_TYPE_H4:
- case DOM_HTML_ELEMENT_TYPE_H5:
- case DOM_HTML_ELEMENT_TYPE_H6:
- SET_HTML_CLASS(HEADING)
- break;
- case DOM_HTML_ELEMENT_TYPE_BLOCKQUOTE:
- case DOM_HTML_ELEMENT_TYPE_Q:
- SET_HTML_CLASS(QUOTE)
- break;
- case DOM_HTML_ELEMENT_TYPE_PRE:
- SET_HTML_CLASS(PRE)
- break;
- case DOM_HTML_ELEMENT_TYPE_BR:
- SET_HTML_CLASS(BR)
- break;
- case DOM_HTML_ELEMENT_TYPE_LABEL:
- SET_HTML_CLASS(LABEL)
- break;
- case DOM_HTML_ELEMENT_TYPE_UL:
- SET_HTML_CLASS(ULIST)
- break;
- case DOM_HTML_ELEMENT_TYPE_OL:
- SET_HTML_CLASS(OLIST)
- break;
- case DOM_HTML_ELEMENT_TYPE_LI:
- SET_HTML_CLASS(LI)
- break;
- case DOM_HTML_ELEMENT_TYPE_FONT:
- SET_HTML_CLASS(FONT)
- break;
- case DOM_HTML_ELEMENT_TYPE_DEL:
- case DOM_HTML_ELEMENT_TYPE_INS:
- SET_HTML_CLASS(MOD)
- break;
- case DOM_HTML_ELEMENT_TYPE_A:
- SET_HTML_CLASS(ANCHOR)
- break;
- case DOM_HTML_ELEMENT_TYPE_BASEFONT:
- SET_HTML_CLASS(BASEFONT)
- break;
- case DOM_HTML_ELEMENT_TYPE_IMG:
- SET_HTML_CLASS(IMAGE)
- break;
- case DOM_HTML_ELEMENT_TYPE_OBJECT:
- SET_HTML_CLASS(OBJECT)
- break;
- case DOM_HTML_ELEMENT_TYPE_PARAM:
- SET_HTML_CLASS(PARAM)
- break;
- case DOM_HTML_ELEMENT_TYPE_APPLET:
- SET_HTML_CLASS(APPLET)
- break;
- case DOM_HTML_ELEMENT_TYPE_MAP:
- SET_HTML_CLASS(MAP)
- break;
- case DOM_HTML_ELEMENT_TYPE_AREA:
- SET_HTML_CLASS(AREA)
- break;
- case DOM_HTML_ELEMENT_TYPE_SCRIPT:
- SET_HTML_CLASS(SCRIPT)
- break;
- case DOM_HTML_ELEMENT_TYPE_CAPTION:
- SET_HTML_CLASS(TABLECAPTION)
- break;
- case DOM_HTML_ELEMENT_TYPE_TD:
- case DOM_HTML_ELEMENT_TYPE_TH:
- SET_HTML_CLASS(TABLECELL)
- break;
- case DOM_HTML_ELEMENT_TYPE_COL:
- case DOM_HTML_ELEMENT_TYPE_COLGROUP:
- SET_HTML_CLASS(TABLECOL)
- break;
- case DOM_HTML_ELEMENT_TYPE_THEAD:
- case DOM_HTML_ELEMENT_TYPE_TBODY:
- case DOM_HTML_ELEMENT_TYPE_TFOOT:
- SET_HTML_CLASS(TABLESECTION)
- break;
- case DOM_HTML_ELEMENT_TYPE_TABLE:
- SET_HTML_CLASS(TABLE)
- break;
- case DOM_HTML_ELEMENT_TYPE_TR:
- SET_HTML_CLASS(TABLEROW)
- break;
- case DOM_HTML_ELEMENT_TYPE_STYLE:
- SET_HTML_CLASS(STYLE)
- break;
- case DOM_HTML_ELEMENT_TYPE_FRAMESET:
- SET_HTML_CLASS(FRAMESET)
- break;
- case DOM_HTML_ELEMENT_TYPE_FRAME:
- SET_HTML_CLASS(FRAME)
- break;
- case DOM_HTML_ELEMENT_TYPE_IFRAME:
- SET_HTML_CLASS(IFRAME)
- break;
- case DOM_HTML_ELEMENT_TYPE_ISINDEX:
- SET_HTML_CLASS(ISINDEX)
- break;
- case DOM_HTML_ELEMENT_TYPE__COUNT:
- assert(type != DOM_HTML_ELEMENT_TYPE__COUNT);
- /* fallthrough */
- case DOM_HTML_ELEMENT_TYPE__UNKNOWN:
- SET_HTML_CLASS(UNKNOWN)
- break;
- default:
- /* Known HTML element without a specialisation */
- *html_class = PROTO_NAME(HTMLELEMENT);
- *html_class_len =
- SLEN(PROTO_NAME(HTML)) +
- SLEN("ELEMENT");
- break;
- }
- return;
-}
-
-#undef SET_HTML_CLASS
-
-static void
-dukky_push_node_klass(duk_context *ctx, struct dom_node *node)
-{
- dom_node_type nodetype;
- dom_exception err;
-
- err = dom_node_get_node_type(node, &nodetype);
- if (err != DOM_NO_ERR) {
- /* Oh bum, just node then */
- duk_push_string(ctx, PROTO_NAME(NODE));
- return;
- }
-
- switch(nodetype) {
- case DOM_ELEMENT_NODE: {
- dom_string *namespace;
- dom_html_element_type type;
- const char *html_class;
- size_t html_class_len;
- err = dom_node_get_namespace(node, &namespace);
- if (err != DOM_NO_ERR) {
- /* Feck it, element */
- LOG("dom_node_get_namespace() failed");
- duk_push_string(ctx, PROTO_NAME(ELEMENT));
- break;
- }
- if (namespace == NULL) {
- /* No namespace, -> element */
- LOG("no namespace");
- duk_push_string(ctx, PROTO_NAME(ELEMENT));
- break;
- }
-
- if (dom_string_isequal(namespace, corestring_dom_html_namespace) == false) {
- /* definitely not an HTML element of some kind */
- duk_push_string(ctx, PROTO_NAME(ELEMENT));
- dom_string_unref(namespace);
- break;
- }
- dom_string_unref(namespace);
-
- err = dom_html_element_get_tag_type(node, &type);
- if (err != DOM_NO_ERR) {
- type = DOM_HTML_ELEMENT_TYPE__UNKNOWN;
- }
-
- dukky_html_element_class_from_tag_type(type,
- &html_class, &html_class_len);
-
- duk_push_lstring(ctx, html_class, html_class_len);
- break;
- }
- case DOM_TEXT_NODE:
- duk_push_string(ctx, PROTO_NAME(TEXT));
- break;
- case DOM_COMMENT_NODE:
- duk_push_string(ctx, PROTO_NAME(COMMENT));
- break;
- case DOM_DOCUMENT_NODE:
- duk_push_string(ctx, PROTO_NAME(DOCUMENT));
- break;
- case DOM_ATTRIBUTE_NODE:
- case DOM_PROCESSING_INSTRUCTION_NODE:
- case DOM_DOCUMENT_TYPE_NODE:
- case DOM_DOCUMENT_FRAGMENT_NODE:
- case DOM_NOTATION_NODE:
- case DOM_ENTITY_REFERENCE_NODE:
- case DOM_ENTITY_NODE:
- case DOM_CDATA_SECTION_NODE:
- default:
- /* Oh bum, just node then */
- duk_push_string(ctx, PROTO_NAME(NODE));
- }
-}
-
-duk_bool_t
-dukky_push_node(duk_context *ctx, struct dom_node *node)
-{
- JS_LOG("Pushing node %p", node);
- /* First check if we can find the node */
- /* ... */
- duk_get_global_string(ctx, NODE_MAGIC);
- /* ... nodes */
- duk_push_pointer(ctx, node);
- /* ... nodes nodeptr */
- duk_get_prop(ctx, -2);
- /* ... nodes node/undefined */
- if (!duk_is_undefined(ctx, -1)) {
- /* ... nodes node */
- duk_insert(ctx, -2);
- /* ... node nodes */
- duk_pop(ctx);
- /* ... node */
- JS_LOG("Found it memoised");
- return true;
- }
- /* ... nodes undefined */
- duk_pop_2(ctx);
- /* ... */
- /* We couldn't, so now we determine the node type and then
- * we ask for it to be created
- */
- duk_push_pointer(ctx, node);
- /* ... nodeptr */
- dukky_push_node_klass(ctx, node);
- /* ... nodeptr klass */
- return dukky_push_node_stacked(ctx);
-}
-
-static duk_ret_t
-dukky_bad_constructor(duk_context *ctx)
-{
- duk_error(ctx, DUK_ERR_ERROR, "Bad constructor");
- return 0;
-}
-
-void
-dukky_inject_not_ctr(duk_context *ctx, int idx, const char *name)
-{
- /* ... p[idx] ... proto */
- duk_push_c_function(ctx, dukky_bad_constructor, 0);
- /* ... p[idx] ... proto cons */
- duk_insert(ctx, -2);
- /* ... p[idx] ... cons proto */
- duk_put_prop_string(ctx, -2, "prototype");
- /* ... p[idx] ... cons[proto] */
- duk_put_prop_string(ctx, idx, name);
- /* ... p ... */
- return;
-}
-
-/* Duktape heap utility functions */
-
-/* We need to override the defaults because not all platforms are fully ANSI
- * compatible. E.g. RISC OS gets upset if we malloc or realloc a zero byte
- * block, as do debugging tools such as Electric Fence by Bruce Perens.
- */
-
-static void *dukky_alloc_function(void *udata, duk_size_t size)
-{
- if (size == 0)
- return NULL;
-
- return malloc(size);
-}
-
-static void *dukky_realloc_function(void *udata, void *ptr, duk_size_t size)
-{
- if (ptr == NULL && size == 0)
- return NULL;
-
- if (size == 0) {
- free(ptr);
- return NULL;
- }
-
- return realloc(ptr, size);
-}
-
-static void dukky_free_function(void *udata, void *ptr)
-{
- if (ptr != NULL)
- free(ptr);
-}
-
-
-/**************************************** js.h ******************************/
-struct jscontext {
- duk_context *ctx;
- duk_context *thread;
- uint64_t exec_start_time;
-};
-
-#define CTX (ctx->thread)
-
-void js_initialise(void)
-{
- /** TODO: Forces JS on for our testing, needs changing before a release
- * lest we incur the wrath of others.
- */
- /* Disabled force-on for forthcoming release */
- /* nsoption_set_bool(enable_javascript, true);
- */
- javascript_init();
-}
-
-void js_finalise(void)
-{
- /* NADA for now */
-}
-
-#define DUKKY_NEW_PROTOTYPE(klass, uklass, klass_name) \
- dukky_create_prototype(ctx, dukky_##klass##___proto, PROTO_NAME(uklass), klass_name)
-
-nserror js_newcontext(int timeout, jscallback *cb, void *cbctx,
- jscontext **jsctx)
-{
- duk_context *ctx;
- jscontext *ret = calloc(1, sizeof(*ret));
- *jsctx = NULL;
- LOG("Creating new duktape javascript context");
- if (ret == NULL) return NSERROR_NOMEM;
- ctx = ret->ctx = duk_create_heap(
- dukky_alloc_function,
- dukky_realloc_function,
- dukky_free_function,
- ret,
- NULL);
- if (ret->ctx == NULL) { free(ret); return NSERROR_NOMEM; }
- /* Create the prototype stuffs */
- duk_push_global_object(ctx);
- duk_push_boolean(ctx, true);
- duk_put_prop_string(ctx, -2, "protos");
- duk_put_global_string(ctx, PROTO_MAGIC);
- /* Create prototypes here */
- dukky_create_prototypes(ctx);
-
- *jsctx = ret;
- return NSERROR_OK;
-}
-
-void js_destroycontext(jscontext *ctx)
-{
- LOG("Destroying duktape javascript context");
- duk_destroy_heap(ctx->ctx);
- free(ctx);
-}
-
-jsobject *js_newcompartment(jscontext *ctx, void *win_priv, void *doc_priv)
-{
- assert(ctx != NULL);
- /* Pop any active thread off */
- LOG("Yay, new compartment, win_priv=%p, doc_priv=%p", win_priv, doc_priv);
- duk_set_top(ctx->ctx, 0);
- duk_push_thread(ctx->ctx);
- ctx->thread = duk_require_context(ctx->ctx, -1);
- duk_push_int(CTX, 0);
- duk_push_int(CTX, 1);
- duk_push_int(CTX, 2);
- /* Manufacture a Window object */
- /* win_priv is a browser_window, doc_priv is an html content struct */
- duk_push_pointer(CTX, win_priv);
- duk_push_pointer(CTX, doc_priv);
- dukky_create_object(CTX, PROTO_NAME(WINDOW), 2);
- duk_push_global_object(CTX);
- duk_put_prop_string(CTX, -2, PROTO_MAGIC);
- duk_set_global_object(CTX);
-
- /* Now we need to prepare our node mapping table */
- duk_push_object(CTX);
- duk_push_pointer(CTX, NULL);
- duk_push_null(CTX);
- duk_put_prop(CTX, -3);
- duk_put_global_string(CTX, NODE_MAGIC);
-
- /* And now the event mapping table */
- duk_push_object(CTX);
- duk_put_global_string(CTX, EVENT_MAGIC);
-
- return (jsobject *)ctx;
-}
-
-static duk_ret_t eval_top_string(duk_context *ctx)
-{
- duk_eval(ctx);
- return 0;
-}
-
-duk_bool_t dukky_check_timeout(void *udata)
-{
-#define JS_EXEC_TIMEOUT_MS 10000 /* 10 seconds */
- jscontext *ctx = (jscontext *) udata;
- uint64_t now;
-
- (void) nsu_getmonotonic_ms(&now);
-
- /* This function may be called during duk heap construction,
- * so only test for execution timeout if we've recorded a
- * start time.
- */
- return ctx->exec_start_time != 0 &&
- now > (ctx->exec_start_time + JS_EXEC_TIMEOUT_MS);
-}
-
-bool js_exec(jscontext *ctx, const char *txt, size_t txtlen)
-{
- assert(ctx);
- if (txt == NULL || txtlen == 0) return false;
- duk_set_top(CTX, 0);
- duk_push_lstring(CTX, txt, txtlen);
-
- (void) nsu_getmonotonic_ms(&ctx->exec_start_time);
- if (duk_safe_call(CTX, eval_top_string, 1, 1) == DUK_EXEC_ERROR) {
- duk_get_prop_string(CTX, 0, "name");
- duk_get_prop_string(CTX, 0, "message");
- duk_get_prop_string(CTX, 0, "fileName");
- duk_get_prop_string(CTX, 0, "lineNumber");
- duk_get_prop_string(CTX, 0, "stack");
- LOG("Uncaught error in JS: %s: %s", duk_safe_to_string(CTX, 1),
- duk_safe_to_string(CTX, 2));
- LOG(" was at: %s line %s", duk_safe_to_string(CTX, 3),
- duk_safe_to_string(CTX, 4));
- LOG(" Stack trace: %s", duk_safe_to_string(CTX, 5));
- return false;
- }
- if (duk_get_top(CTX) == 0) duk_push_boolean(CTX, false);
- LOG("Returning %s", duk_get_boolean(CTX, 0) ? "true" : "false");
- return duk_get_boolean(CTX, 0);
-}
-
-/*** New style event handling ***/
-
-static void dukky_push_event(duk_context *ctx, dom_event *evt)
-{
- /* ... */
- duk_get_global_string(ctx, EVENT_MAGIC);
- /* ... events */
- duk_push_pointer(ctx, evt);
- /* ... events eventptr */
- duk_get_prop(ctx, -2);
- /* ... events event? */
- if (duk_is_undefined(ctx, -1)) {
- /* ... events undefined */
- duk_pop(ctx);
- /* ... events */
- duk_push_pointer(ctx, evt);
- if (dukky_create_object(ctx, PROTO_NAME(EVENT), 1) != DUK_EXEC_SUCCESS) {
- /* ... events err */
- duk_pop(ctx);
- /* ... events */
- duk_push_object(ctx);
- /* ... events eobj[meh] */
- }
- /* ... events eobj */
- duk_push_pointer(ctx, evt);
- /* ... events eobj eventptr */
- duk_dup(ctx, -2);
- /* ... events eobj eventptr eobj */
- duk_put_prop(ctx, -4);
- /* ... events eobj */
- }
- /* ... events event */
- duk_replace(ctx, -2);
- /* ... event */
-}
-
-static void dukky_push_handler_code_(duk_context *ctx, dom_string *name,
- dom_event_target *et)
-{
- dom_string *onname, *val;
- dom_element *ele = (dom_element *)et;
- dom_exception exc;
- dom_node_type ntype;
-
- /* Currently safe since libdom has no event targets which are not
- * nodes. Reconsider this as and when we work out how to have
- * window do stuff
- */
- exc = dom_node_get_node_type(et, &ntype);
- if (exc != DOM_NO_ERR) {
- duk_push_lstring(ctx, "", 0);
- return;
- }
-
- if (ntype != DOM_ELEMENT_NODE) {
- duk_push_lstring(ctx, "", 0);
- return;
- }
-
- exc = dom_string_concat(corestring_dom_on, name, &onname);
- if (exc != DOM_NO_ERR) {
- duk_push_lstring(ctx, "", 0);
- return;
- }
-
- exc = dom_element_get_attribute(ele, onname, &val);
- if ((exc != DOM_NO_ERR) || (val == NULL)) {
- dom_string_unref(onname);
- duk_push_lstring(ctx, "", 0);
- return;
- }
-
- dom_string_unref(onname);
- duk_push_lstring(ctx, dom_string_data(val), dom_string_length(val));
- dom_string_unref(val);
-}
-
-bool dukky_get_current_value_of_event_handler(duk_context *ctx,
- dom_string *name,
- dom_event_target *et)
-{
- /* Must be entered as:
- * ... node(et)
- */
- duk_get_prop_string(ctx, -1, HANDLER_MAGIC);
- /* ... node handlers */
- duk_push_lstring(ctx, dom_string_data(name), dom_string_length(name));
- /* ... node handlers name */
- duk_get_prop(ctx, -2);
- /* ... node handlers handler? */
- if (duk_is_undefined(ctx, -1)) {
- /* ... node handlers undefined */
- duk_pop_2(ctx);
- /* ... node */
- dukky_push_handler_code_(ctx, name, et);
- /* ... node handlercode? */
- /* TODO: If this is null, clean up and propagate */
- /* ... node handlercode */
- /** @todo This is entirely wrong, but it's hard to get right */
- duk_push_string(ctx, "function (event) {");
- /* ... node handlercode prefix */
- duk_insert(ctx, -2);
- /* ... node prefix handlercode */
- duk_push_string(ctx, "}");
- /* ... node prefix handlercode suffix */
- duk_concat(ctx, 3);
- /* ... node fullhandlersrc */
- duk_push_string(ctx, "internal raw uncompiled handler");
- /* ... node fullhandlersrc filename */
- if (duk_pcompile(ctx, DUK_COMPILE_FUNCTION) != 0) {
- /* ... node err */
- LOG("Unable to proceed with handler, could not compile");
- duk_pop_2(ctx);
- return false;
- }
- /* ... node handler */
- duk_insert(ctx, -2);
- /* ... handler node */
- } else {
- /* ... node handlers handler */
- duk_insert(ctx, -3);
- /* ... handler node handlers */
- duk_pop(ctx);
- /* ... handler node */
- }
- /* ... handler node */
- return true;
-}
-
-static void dukky_generic_event_handler(dom_event *evt, void *pw)
-{
- duk_memory_functions funcs;
- duk_context *ctx = (duk_context *)pw;
- jscontext *jsctx;
- dom_string *name;
- dom_exception exc;
- dom_event_target *targ;
- dom_event_flow_phase phase;
-
- /* Retrieve the JS context from the Duktape context */
- duk_get_memory_functions(ctx, &funcs);
- jsctx = funcs.udata;
-
- LOG("WOOP WOOP, An event:");
- exc = dom_event_get_type(evt, &name);
- if (exc != DOM_NO_ERR) {
- LOG("Unable to find the event name");
- return;
- }
- LOG("Event's name is %*s",
- dom_string_length(name), dom_string_data(name));
- exc = dom_event_get_event_phase(evt, &phase);
- if (exc != DOM_NO_ERR) {
- LOG("Unable to get event phase");
- return;
- }
- LOG("Event phase is: %s (%d)",
- phase == DOM_CAPTURING_PHASE ? "capturing" :
- phase == DOM_AT_TARGET ? "at-target" :
- phase == DOM_BUBBLING_PHASE ? "bubbling" :
- "unknown", (int)phase);
-
- exc = dom_event_get_current_target(evt, &targ);
- if (exc != DOM_NO_ERR) {
- dom_string_unref(name);
- LOG("Unable to find the event target");
- return;
- }
-
- /* ... */
- if (dukky_push_node(ctx, (dom_node *)targ) == false) {
- dom_string_unref(name);
- dom_node_unref(targ);
- LOG("Unable to push JS node representation?!");
- return;
- }
- /* ... node */
- if (dukky_get_current_value_of_event_handler(
- ctx, name, (dom_event_target *)targ) == false) {
- dom_node_unref(targ);
- dom_string_unref(name);
- return;
- }
- /** @todo handle other kinds of event than the generic case */
- dom_node_unref(targ);
- dom_string_unref(name);
- /* ... handler node */
- dukky_push_event(ctx, evt);
- /* ... handler node event */
- (void) nsu_getmonotonic_ms(&jsctx->exec_start_time);
- if (duk_pcall_method(ctx, 1) != 0) {
- /* Failed to run the method */
- /* ... err */
- LOG("OH NOES! An error running a callback. Meh.");
- exc = dom_event_stop_immediate_propagation(evt);
- if (exc != DOM_NO_ERR)
- LOG("WORSE! could not stop propagation");
- duk_get_prop_string(ctx, -1, "name");
- duk_get_prop_string(ctx, -2, "message");
- duk_get_prop_string(ctx, -3, "fileName");
- duk_get_prop_string(ctx, -4, "lineNumber");
- duk_get_prop_string(ctx, -5, "stack");
- /* ... err name message fileName lineNumber stack */
- LOG("Uncaught error in JS: %s: %s", duk_safe_to_string(ctx, -5),
- duk_safe_to_string(ctx, -4));
- LOG(" was at: %s line %s", duk_safe_to_string(ctx, -3),
- duk_safe_to_string(ctx, -2));
- LOG(" Stack trace: %s", duk_safe_to_string(ctx, -1));
-
- duk_pop_n(ctx, 6);
- /* ... */
- return;
- }
- /* ... result */
- if (duk_is_boolean(ctx, -1) &&
- duk_to_boolean(ctx, -1) == 0) {
- dom_event_prevent_default(evt);
- }
- duk_pop(ctx);
- /* ... */
-}
-
-void dukky_register_event_listener_for(duk_context *ctx,
- struct dom_element *ele,
- dom_string *name)
-{
- dom_event_listener *listen = NULL;
- dom_exception exc;
-
- /* ... */
- if (dukky_push_node(ctx, (struct dom_node *)ele) == false)
- return;
- /* ... node */
- duk_get_prop_string(ctx, -1, HANDLER_LISTENER_MAGIC);
- /* ... node handlers */
- duk_push_lstring(ctx, dom_string_data(name), dom_string_length(name));
- /* ... node handlers name */
- if (duk_has_prop(ctx, -2)) {
- /* ... node handlers */
- duk_pop_2(ctx);
- /* ... */
- return;
- }
- /* ... node handlers */
- duk_push_lstring(ctx, dom_string_data(name), dom_string_length(name));
- /* ... node handlers name */
- duk_push_boolean(ctx, true);
- /* ... node handlers name true */
- duk_put_prop(ctx, -3);
- /* ... node handlers */
- duk_pop_2(ctx);
- /* ... */
- exc = dom_event_listener_create(dukky_generic_event_handler, ctx,
- &listen);
- if (exc != DOM_NO_ERR) return;
- exc = dom_event_target_add_event_listener(
- ele, name, listen, false);
- if (exc != DOM_NO_ERR) {
- LOG("Unable to register listener for %p.%*s",
- ele, dom_string_length(name), dom_string_data(name));
- } else {
- LOG("have registered listener for %p.%*s",
- ele, dom_string_length(name), dom_string_data(name));
- }
- dom_event_listener_unref(listen);
-}
-
-
-void js_handle_new_element(jscontext *ctx, struct dom_element *node)
-{
- assert(ctx);
- assert(node);
- dom_namednodemap *map;
- dom_exception exc;
- dom_ulong idx;
- dom_ulong siz;
- dom_attr *attr = NULL;
- dom_string *key = NULL;
- dom_string *nodename;
- duk_bool_t is_body = false;
-
- exc = dom_node_get_node_name(node, &nodename);
- if (exc != DOM_NO_ERR) return;
-
- if (nodename == corestring_dom_BODY)
- is_body = true;
-
- dom_string_unref(nodename);
-
- exc = dom_node_get_attributes(node, &map);
- if (exc != DOM_NO_ERR) return;
- if (map == NULL) return;
-
- exc = dom_namednodemap_get_length(map, &siz);
- if (exc != DOM_NO_ERR) goto out;
-
- for (idx = 0; idx < siz; idx++) {
- exc = dom_namednodemap_item(map, idx, &attr);
- if (exc != DOM_NO_ERR) goto out;
- exc = dom_attr_get_name(attr, &key);
- if (exc != DOM_NO_ERR) goto out;
- if (is_body && (
- key == corestring_dom_onblur ||
- key == corestring_dom_onerror ||
- key == corestring_dom_onfocus ||
- key == corestring_dom_onload ||
- key == corestring_dom_onresize ||
- key == corestring_dom_onscroll)) {
- /* This is a forwarded event, it doesn't matter,
- * we should skip registering for it and later
- * we will register it for Window itself
- */
- goto skip_register;
- }
- if (dom_string_length(key) > 2) {
- /* Can be on* */
- const uint8_t *data = (const uint8_t *)dom_string_data(key);
- if (data[0] == 'o' && data[1] == 'n') {
- dom_string *sub = NULL;
- exc = dom_string_substr(
- key, 2, dom_string_length(key),
- &sub);
- if (exc == DOM_NO_ERR) {
- dukky_register_event_listener_for(
- CTX, node, sub);
- dom_string_unref(sub);
- }
- }
- }
- skip_register:
- dom_string_unref(key); key = NULL;
- dom_node_unref(attr); attr = NULL;
- }
-
-out:
- if (key != NULL)
- dom_string_unref(key);
-
- if (attr != NULL)
- dom_node_unref(attr);
-
- dom_namednodemap_unref(map);
-}
-
-void js_event_cleanup(jscontext *ctx, struct dom_event *evt)
-{
- assert(ctx);
- /* ... */
- duk_get_global_string(CTX, EVENT_MAGIC);
- /* ... EVENT_MAP */
- duk_push_pointer(CTX, evt);
- /* ... EVENT_MAP eventptr */
- duk_del_prop(CTX, -2);
- /* ... EVENT_MAP */
- duk_pop(CTX);
- /* ... */
-}
-
-bool js_fire_event(jscontext *ctx, const char *type, struct dom_document *doc, struct dom_node *target)
-{
- dom_exception exc;
- dom_event *evt;
- dom_event_target *body;
-
- LOG("Event: %s (doc=%p, target=%p)", type, doc, target);
-
- /** @todo Make this more generic, this only handles load and only
- * targetting the window, so that we actually stand a chance of
- * getting 3.4 out.
- */
-
- if (target != NULL)
- /* Swallow non-Window-targetted events quietly */
- return true;
-
- if (strcmp(type, "load") != 0)
- /* Swallow non-load events quietly */
- return true;
-
- /* Okay, we're processing load, targetted at Window, do the single
- * thing which gets us there, which is to find the appropriate event
- * handler and call it. If we have no event handler on Window then
- * we divert to the body, and if there's no event handler there
- * we swallow the event silently
- */
-
- exc = dom_event_create(&evt);
- if (exc != DOM_NO_ERR) return true;
- exc = dom_event_init(evt, corestring_dom_load, false, false);
- if (exc != DOM_NO_ERR) {
- dom_event_unref(evt);
- return true;
- }
- /* ... */
- duk_get_global_string(CTX, HANDLER_MAGIC);
- /* ... handlers */
- duk_push_lstring(CTX, "load", 4);
- /* ... handlers "load" */
- duk_get_prop(CTX, -2);
- /* ... handlers handler? */
- if (duk_is_undefined(CTX, -1)) {
- /* No handler here, *try* and retrieve a handler from
- * the body
- */
- duk_pop(CTX);
- /* ... handlers */
- exc = dom_html_document_get_body(doc, &body);
- if (exc != DOM_NO_ERR) {
- dom_event_unref(evt);
- return true;
- }
- dukky_push_node(CTX, (struct dom_node *)body);
- /* ... handlers bodynode */
- if (dukky_get_current_value_of_event_handler(
- CTX, corestring_dom_load, body) == false) {
- /* ... handlers */
- duk_pop(CTX);
- return true;
- }
- /* ... handlers handler bodynode */
- duk_pop(CTX);
- }
- /* ... handlers handler */
- duk_insert(CTX, -2);
- /* ... handler handlers */
- duk_pop(CTX);
- /* ... handler */
- duk_push_global_object(CTX);
- /* ... handler Window */
- dukky_push_event(CTX, evt);
- /* ... handler Window event */
- (void) nsu_getmonotonic_ms(&ctx->exec_start_time);
- if (duk_pcall_method(CTX, 1) != 0) {
- /* Failed to run the handler */
- /* ... err */
- LOG("OH NOES! An error running a handler. Meh.");
- duk_get_prop_string(CTX, -1, "name");
- duk_get_prop_string(CTX, -2, "message");
- duk_get_prop_string(CTX, -3, "fileName");
- duk_get_prop_string(CTX, -4, "lineNumber");
- duk_get_prop_string(CTX, -5, "stack");
- /* ... err name message fileName lineNumber stack */
- LOG("Uncaught error in JS: %s: %s", duk_safe_to_string(CTX, -5),
- duk_safe_to_string(CTX, -4));
- LOG(" was at: %s line %s", duk_safe_to_string(CTX, -3),
- duk_safe_to_string(CTX, -2));
- LOG(" Stack trace: %s", duk_safe_to_string(CTX, -1));
-
- duk_pop_n(CTX, 6);
- /* ... */
- js_event_cleanup(ctx, evt);
- dom_event_unref(evt);
- return true;
- }
- /* ... result */
- duk_pop(CTX);
- /* ... */
- js_event_cleanup(ctx, evt);
- dom_event_unref(evt);
- return true;
-}
diff --git a/javascript/duktape/dukky.h b/javascript/duktape/dukky.h
deleted file mode 100644
index 0c3ff0e25..000000000
--- a/javascript/duktape/dukky.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- * Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
- * Copyright 2015 Daniel Dilverstone <dsilvers@netsurf-browser.org>
- * Copyright 2016 Michael Drake <tlsa@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * NetSurf is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * NetSurf is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-/** \file
- * Duktapeish implementation of javascript engine functions, prototypes.
- */
-
-#ifndef DUKKY_H
-#define DUKKY_H
-
-#ifdef JS_DEBUG
-# define JS_LOG(format, args...) LOG(format , ##args)
-#else
-# define JS_LOG(format, ...) ((void) 0)
-#endif
-
-duk_ret_t dukky_create_object(duk_context *ctx, const char *name, int args);
-duk_bool_t dukky_push_node_stacked(duk_context *ctx);
-duk_bool_t dukky_push_node(duk_context *ctx, struct dom_node *node);
-void dukky_inject_not_ctr(duk_context *ctx, int idx, const char *name);
-void dukky_register_event_listener_for(duk_context *ctx,
- struct dom_element *ele,
- dom_string *name);
-bool dukky_get_current_value_of_event_handler(duk_context *ctx,
- dom_string *name,
- dom_event_target *et);
-
-#endif
diff --git a/javascript/duktape/duktape.c b/javascript/duktape/duktape.c
deleted file mode 100644
index eb4c77a04..000000000
--- a/javascript/duktape/duktape.c
+++ /dev/null
@@ -1,86513 +0,0 @@
-/* Omit from static analysis. */
-#ifndef __clang_analyzer__
-/*
- * Single source autogenerated distributable for Duktape 1.5.0.
- *
- * Git commit 83d557704ee63f68ab40b6fcb00995c9b3d6777c (v1.5.0).
- * Git branch master.
- *
- * See Duktape AUTHORS.rst and LICENSE.txt for copyright and
- * licensing information.
- */
-
-/* LICENSE.txt */
-/*
-* ===============
-* Duktape license
-* ===============
-*
-* (http://opensource.org/licenses/MIT)
-*
-* Copyright (c) 2013-2016 by Duktape authors (see AUTHORS.rst)
-*
-* Permission is hereby granted, free of charge, to any person obtaining a copy
-* of this software and associated documentation files (the "Software"), to deal
-* in the Software without restriction, including without limitation the rights
-* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-* copies of the Software, and to permit persons to whom the Software is
-* furnished to do so, subject to the following conditions:
-*
-* The above copyright notice and this permission notice shall be included in
-* all copies or substantial portions of the Software.
-*
-* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-* THE SOFTWARE.
-*/
-/* AUTHORS.rst */
-/*
-* ===============
-* Duktape authors
-* ===============
-*
-* Copyright
-* =========
-*
-* Duktape copyrights are held by its authors. Each author has a copyright
-* to their contribution, and agrees to irrevocably license the contribution
-* under the Duktape ``LICENSE.txt``.
-*
-* Authors
-* =======
-*
-* Please include an e-mail address, a link to your GitHub profile, or something
-* similar to allow your contribution to be identified accurately.
-*
-* The following people have contributed code, website contents, or Wiki contents,
-* and agreed to irrevocably license their contributions under the Duktape
-* ``LICENSE.txt`` (in order of appearance):
-*
-* * Sami Vaarala <sami.vaarala@iki.fi>
-* * Niki Dobrev
-* * Andreas \u00d6man <andreas@lonelycoder.com>
-* * L\u00e1szl\u00f3 Lang\u00f3 <llango.u-szeged@partner.samsung.com>
-* * Legimet <legimet.calc@gmail.com>
-* * Karl Skomski <karl@skomski.com>
-* * Bruce Pascoe <fatcerberus1@gmail.com>
-* * Ren\u00e9 Hollander <rene@rene8888.at>
-* * Julien Hamaide (https://github.com/crazyjul)
-* * Sebastian G\u00f6tte (https://github.com/jaseg)
-*
-* Other contributions
-* ===================
-*
-* The following people have contributed something other than code (e.g. reported
-* bugs, provided ideas, etc; roughly in order of appearance):
-*
-* * Greg Burns
-* * Anthony Rabine
-* * Carlos Costa
-* * Aur\u00e9lien Bouilland
-* * Preet Desai (Pris Matic)
-* * judofyr (http://www.reddit.com/user/judofyr)
-* * Jason Woofenden
-* * Micha\u0142 Przyby\u015b
-* * Anthony Howe
-* * Conrad Pankoff
-* * Jim Schimpf
-* * Rajaran Gaunker (https://github.com/zimbabao)
-* * Andreas \u00d6man
-* * Doug Sanden
-* * Josh Engebretson (https://github.com/JoshEngebretson)
-* * Remo Eichenberger (https://github.com/remoe)
-* * Mamod Mehyar (https://github.com/mamod)
-* * David Demelier (https://github.com/markand)
-* * Tim Caswell (https://github.com/creationix)
-* * Mitchell Blank Jr (https://github.com/mitchblank)
-* * https://github.com/yushli
-* * Seo Sanghyeon (https://github.com/sanxiyn)
-* * Han ChoongWoo (https://github.com/tunz)
-* * Joshua Peek (https://github.com/josh)
-* * Bruce E. Pascoe (https://github.com/fatcerberus)
-* * https://github.com/Kelledin
-* * https://github.com/sstruchtrup
-* * Michael Drake (https://github.com/tlsa)
-* * https://github.com/chris-y
-* * Laurent Zubiaur (https://github.com/lzubiaur)
-* * Ole Andr\u00e9 Vadla Ravn\u00e5s (https://github.com/oleavr)
-*
-* If you are accidentally missing from this list, send me an e-mail
-* (``sami.vaarala@iki.fi``) and I'll fix the omission.
-*/
-#line 1 "duk_internal.h"
-/*
- * Top-level include file to be used for all (internal) source files.
- *
- * Source files should not include individual header files, as they
- * have not been designed to be individually included.
- */
-
-#ifndef DUK_INTERNAL_H_INCLUDED
-#define DUK_INTERNAL_H_INCLUDED
-
-/*
- * The 'duktape.h' header provides the public API, but also handles all
- * compiler and platform specific feature detection, Duktape feature
- * resolution, inclusion of system headers, etc. These have been merged
- * because the public API is also dependent on e.g. detecting appropriate
- * C types which is quite platform/compiler specific especially for a non-C99
- * build. The public API is also dependent on the resolved feature set.
- *
- * Some actions taken by the merged header (such as including system headers)
- * are not appropriate for building a user application. The define
- * DUK_COMPILING_DUKTAPE allows the merged header to skip/include some
- * sections depending on what is being built.
- */
-
-#define DUK_COMPILING_DUKTAPE
-#include "duktape.h"
-
-/*
- * User declarations, e.g. prototypes for user functions used by Duktape
- * macros. Concretely, if DUK_USE_PANIC_HANDLER is used and the macro
- * value calls a user function, it needs to be declared for Duktape
- * compilation to avoid warnings.
- */
-
-DUK_USE_USER_DECLARE()
-
-/*
- * Duktape includes (other than duk_features.h)
- *
- * The header files expect to be included in an order which satisfies header
- * dependencies correctly (the headers themselves don't include any other
- * includes). Forward declarations are used to break circular struct/typedef
- * dependencies.
- */
-
-#line 1 "duk_replacements.h"
-#ifndef DUK_REPLACEMENTS_H_INCLUDED
-#define DUK_REPLACEMENTS_H_INCLUDED
-
-#if !defined(DUK_SINGLE_FILE)
-#if defined(DUK_USE_COMPUTED_INFINITY)
-DUK_INTERNAL_DECL double duk_computed_infinity;
-#endif
-#if defined(DUK_USE_COMPUTED_NAN)
-DUK_INTERNAL_DECL double duk_computed_nan;
-#endif
-#if defined(DUK_USE_REPL_FPCLASSIFY)
-DUK_INTERNAL_DECL int duk_repl_fpclassify(double x);
-#endif
-#if defined(DUK_USE_REPL_SIGNBIT)
-DUK_INTERNAL_DECL int duk_repl_signbit(double x);
-#endif
-#if defined(DUK_USE_REPL_ISFINITE)
-DUK_INTERNAL_DECL int duk_repl_isfinite(double x);
-#endif
-#if defined(DUK_USE_REPL_ISNAN)
-DUK_INTERNAL_DECL int duk_repl_isnan(double x);
-#endif
-#if defined(DUK_USE_REPL_ISINF)
-DUK_INTERNAL_DECL int duk_repl_isinf(double x);
-#endif
-#endif /* !DUK_SINGLE_FILE */
-
-#endif /* DUK_REPLACEMENTS_H_INCLUDED */
-#line 1 "duk_jmpbuf.h"
-/*
- * Wrapper for jmp_buf.
- *
- * This is used because jmp_buf is an array type for backward compatibility.
- * Wrapping jmp_buf in a struct makes pointer references, sizeof, etc,
- * behave more intuitively.
- *
- * http://en.wikipedia.org/wiki/Setjmp.h#Member_types
- */
-
-#ifndef DUK_JMPBUF_H_INCLUDED
-#define DUK_JMPBUF_H_INCLUDED
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
-struct duk_jmpbuf {
- duk_small_int_t dummy; /* unused */
-};
-#else
-struct duk_jmpbuf {
- DUK_JMPBUF_TYPE jb;
-};
-#endif
-
-#endif /* DUK_JMPBUF_H_INCLUDED */
-#line 1 "duk_exception.h"
-/*
- * Exception for Duktape internal throws when C++ exceptions are used
- * for long control transfers.
- *
- * Doesn't inherit from any exception base class to minimize the chance
- * that user code would accidentally catch this exception.
- */
-
-#ifndef DUK_EXCEPTION_H_INCLUDED
-#define DUK_EXCEPTION_H_INCLUDED
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
-class duk_internal_exception {
- /* intentionally empty */
-};
-#endif
-
-#endif /* DUK_EXCEPTION_H_INCLUDED */
-#line 1 "duk_forwdecl.h"
-/*
- * Forward declarations for all Duktape structures.
- */
-
-#ifndef DUK_FORWDECL_H_INCLUDED
-#define DUK_FORWDECL_H_INCLUDED
-
-/*
- * Forward declarations
- */
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
-class duk_internal_exception;
-#else
-struct duk_jmpbuf;
-#endif
-
-/* duk_tval intentionally skipped */
-struct duk_heaphdr;
-struct duk_heaphdr_string;
-struct duk_hstring;
-struct duk_hstring_external;
-struct duk_hobject;
-struct duk_hcompiledfunction;
-struct duk_hnativefunction;
-struct duk_hthread;
-struct duk_hbufferobject;
-struct duk_hbuffer;
-struct duk_hbuffer_fixed;
-struct duk_hbuffer_dynamic;
-struct duk_hbuffer_external;
-
-struct duk_propaccessor;
-union duk_propvalue;
-struct duk_propdesc;
-
-struct duk_heap;
-struct duk_breakpoint;
-
-struct duk_activation;
-struct duk_catcher;
-struct duk_strcache;
-struct duk_ljstate;
-struct duk_strtab_entry;
-
-#ifdef DUK_USE_DEBUG
-struct duk_fixedbuffer;
-#endif
-
-struct duk_bitdecoder_ctx;
-struct duk_bitencoder_ctx;
-struct duk_bufwriter_ctx;
-
-struct duk_token;
-struct duk_re_token;
-struct duk_lexer_point;
-struct duk_lexer_ctx;
-struct duk_lexer_codepoint;
-
-struct duk_compiler_instr;
-struct duk_compiler_func;
-struct duk_compiler_ctx;
-
-struct duk_re_matcher_ctx;
-struct duk_re_compiler_ctx;
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
-/* no typedef */
-#else
-typedef struct duk_jmpbuf duk_jmpbuf;
-#endif
-
-/* duk_tval intentionally skipped */
-typedef struct duk_heaphdr duk_heaphdr;
-typedef struct duk_heaphdr_string duk_heaphdr_string;
-typedef struct duk_hstring duk_hstring;
-typedef struct duk_hstring_external duk_hstring_external;
-typedef struct duk_hobject duk_hobject;
-typedef struct duk_hcompiledfunction duk_hcompiledfunction;
-typedef struct duk_hnativefunction duk_hnativefunction;
-typedef struct duk_hbufferobject duk_hbufferobject;
-typedef struct duk_hthread duk_hthread;
-typedef struct duk_hbuffer duk_hbuffer;
-typedef struct duk_hbuffer_fixed duk_hbuffer_fixed;
-typedef struct duk_hbuffer_dynamic duk_hbuffer_dynamic;
-typedef struct duk_hbuffer_external duk_hbuffer_external;
-
-typedef struct duk_propaccessor duk_propaccessor;
-typedef union duk_propvalue duk_propvalue;
-typedef struct duk_propdesc duk_propdesc;
-
-typedef struct duk_heap duk_heap;
-typedef struct duk_breakpoint duk_breakpoint;
-
-typedef struct duk_activation duk_activation;
-typedef struct duk_catcher duk_catcher;
-typedef struct duk_strcache duk_strcache;
-typedef struct duk_ljstate duk_ljstate;
-typedef struct duk_strtab_entry duk_strtab_entry;
-
-#ifdef DUK_USE_DEBUG
-typedef struct duk_fixedbuffer duk_fixedbuffer;
-#endif
-
-typedef struct duk_bitdecoder_ctx duk_bitdecoder_ctx;
-typedef struct duk_bitencoder_ctx duk_bitencoder_ctx;
-typedef struct duk_bufwriter_ctx duk_bufwriter_ctx;
-
-typedef struct duk_token duk_token;
-typedef struct duk_re_token duk_re_token;
-typedef struct duk_lexer_point duk_lexer_point;
-typedef struct duk_lexer_ctx duk_lexer_ctx;
-typedef struct duk_lexer_codepoint duk_lexer_codepoint;
-
-typedef struct duk_compiler_instr duk_compiler_instr;
-typedef struct duk_compiler_func duk_compiler_func;
-typedef struct duk_compiler_ctx duk_compiler_ctx;
-
-typedef struct duk_re_matcher_ctx duk_re_matcher_ctx;
-typedef struct duk_re_compiler_ctx duk_re_compiler_ctx;
-
-#endif /* DUK_FORWDECL_H_INCLUDED */
-#line 1 "duk_tval.h"
-/*
- * Tagged type definition (duk_tval) and accessor macros.
- *
- * Access all fields through the accessor macros, as the representation
- * is quite tricky.
- *
- * There are two packed type alternatives: an 8-byte representation
- * based on an IEEE double (preferred for compactness), and a 12-byte
- * representation (portability). The latter is needed also in e.g.
- * 64-bit environments (it usually pads to 16 bytes per value).
- *
- * Selecting the tagged type format involves many trade-offs (memory
- * use, size and performance of generated code, portability, etc),
- * see doc/types.rst for a detailed discussion (especially of how the
- * IEEE double format is used to pack tagged values).
- *
- * NB: because macro arguments are often expressions, macros should
- * avoid evaluating their argument more than once.
- */
-
-#ifndef DUK_TVAL_H_INCLUDED
-#define DUK_TVAL_H_INCLUDED
-
-/* sanity */
-#if !defined(DUK_USE_DOUBLE_LE) && !defined(DUK_USE_DOUBLE_ME) && !defined(DUK_USE_DOUBLE_BE)
-#error unsupported: cannot determine byte order variant
-#endif
-
-#if defined(DUK_USE_PACKED_TVAL)
-/* ======================================================================== */
-
-/*
- * Packed 8-byte representation
- */
-
-/* use duk_double_union as duk_tval directly */
-typedef union duk_double_union duk_tval;
-
-/* tags */
-#define DUK_TAG_NORMALIZED_NAN 0x7ff8UL /* the NaN variant we use */
-/* avoid tag 0xfff0, no risk of confusion with negative infinity */
-#if defined(DUK_USE_FASTINT)
-#define DUK_TAG_FASTINT 0xfff1UL /* embed: integer value */
-#endif
-#define DUK_TAG_UNUSED 0xfff2UL /* marker; not actual tagged value */
-#define DUK_TAG_UNDEFINED 0xfff3UL /* embed: nothing */
-#define DUK_TAG_NULL 0xfff4UL /* embed: nothing */
-#define DUK_TAG_BOOLEAN 0xfff5UL /* embed: 0 or 1 (false or true) */
-/* DUK_TAG_NUMBER would logically go here, but it has multiple 'tags' */
-#define DUK_TAG_POINTER 0xfff6UL /* embed: void ptr */
-#define DUK_TAG_LIGHTFUNC 0xfff7UL /* embed: func ptr */
-#define DUK_TAG_STRING 0xfff8UL /* embed: duk_hstring ptr */
-#define DUK_TAG_OBJECT 0xfff9UL /* embed: duk_hobject ptr */
-#define DUK_TAG_BUFFER 0xfffaUL /* embed: duk_hbuffer ptr */
-
-/* for convenience */
-#define DUK_XTAG_BOOLEAN_FALSE 0xfff50000UL
-#define DUK_XTAG_BOOLEAN_TRUE 0xfff50001UL
-
-/* two casts to avoid gcc warning: "warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]" */
-#if defined(DUK_USE_64BIT_OPS)
-#if defined(DUK_USE_DOUBLE_ME)
-#define DUK__TVAL_SET_TAGGEDPOINTER(v,h,tag) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) (tag)) << 16) | (((duk_uint64_t) (duk_uint32_t) (h)) << 32); \
- } while (0)
-#else
-#define DUK__TVAL_SET_TAGGEDPOINTER(v,h,tag) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) (tag)) << 48) | ((duk_uint64_t) (duk_uint32_t) (h)); \
- } while (0)
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK__TVAL_SET_TAGGEDPOINTER(v,h,tag) do { \
- (v)->ui[DUK_DBL_IDX_UI0] = ((duk_uint32_t) (tag)) << 16; \
- (v)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (h); \
- } while (0)
-#endif /* DUK_USE_64BIT_OPS */
-
-#if defined(DUK_USE_64BIT_OPS)
-/* Double casting for pointer to avoid gcc warning (cast from pointer to integer of different size) */
-#if defined(DUK_USE_DOUBLE_ME)
-#define DUK__TVAL_SET_LIGHTFUNC(v,fp,flags) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_LIGHTFUNC) << 16) | \
- ((duk_uint64_t) (flags)) | \
- (((duk_uint64_t) (duk_uint32_t) (fp)) << 32); \
- } while (0)
-#else
-#define DUK__TVAL_SET_LIGHTFUNC(v,fp,flags) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_LIGHTFUNC) << 48) | \
- (((duk_uint64_t) (flags)) << 32) | \
- ((duk_uint64_t) (duk_uint32_t) (fp)); \
- } while (0)
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK__TVAL_SET_LIGHTFUNC(v,fp,flags) do { \
- (v)->ui[DUK_DBL_IDX_UI0] = (((duk_uint32_t) DUK_TAG_LIGHTFUNC) << 16) | ((duk_uint32_t) (flags)); \
- (v)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (fp); \
- } while (0)
-#endif /* DUK_USE_64BIT_OPS */
-
-#if defined(DUK_USE_FASTINT)
-/* Note: masking is done for 'i' to deal with negative numbers correctly */
-#if defined(DUK_USE_DOUBLE_ME)
-#define DUK__TVAL_SET_FASTINT(v,i) do { \
- (v)->ui[DUK_DBL_IDX_UI0] = ((duk_uint32_t) DUK_TAG_FASTINT) << 16 | (((duk_uint32_t) ((i) >> 32)) & 0x0000ffffUL); \
- (v)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (i); \
- } while (0)
-#define DUK__TVAL_SET_FASTINT_U32(v,i) do { \
- (v)->ui[DUK_DBL_IDX_UI0] = ((duk_uint32_t) DUK_TAG_FASTINT) << 16; \
- (v)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (i); \
- } while (0)
-#else
-#define DUK__TVAL_SET_FASTINT(v,i) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_FASTINT) << 48) | (((duk_uint64_t) (i)) & 0x0000ffffffffffffULL); \
- } while (0)
-#define DUK__TVAL_SET_FASTINT_U32(v,i) do { \
- (v)->ull[DUK_DBL_IDX_ULL0] = (((duk_uint64_t) DUK_TAG_FASTINT) << 48) | (duk_uint64_t) (i); \
- } while (0)
-#endif
-
-#define DUK__TVAL_SET_FASTINT_I32(v,i) do { \
- duk_int64_t duk__tmp = (duk_int64_t) (i); \
- DUK_TVAL_SET_FASTINT((v), duk__tmp); \
- } while (0)
-
-/* XXX: clumsy sign extend and masking of 16 topmost bits */
-#if defined(DUK_USE_DOUBLE_ME)
-#define DUK__TVAL_GET_FASTINT(v) (((duk_int64_t) ((((duk_uint64_t) (v)->ui[DUK_DBL_IDX_UI0]) << 32) | ((duk_uint64_t) (v)->ui[DUK_DBL_IDX_UI1]))) << 16 >> 16)
-#else
-#define DUK__TVAL_GET_FASTINT(v) ((((duk_int64_t) (v)->ull[DUK_DBL_IDX_ULL0]) << 16) >> 16)
-#endif
-#define DUK__TVAL_GET_FASTINT_U32(v) ((v)->ui[DUK_DBL_IDX_UI1])
-#define DUK__TVAL_GET_FASTINT_I32(v) ((duk_int32_t) (v)->ui[DUK_DBL_IDX_UI1])
-#endif /* DUK_USE_FASTINT */
-
-#define DUK_TVAL_SET_UNDEFINED(v) do { \
- (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNDEFINED; \
- } while (0)
-#define DUK_TVAL_SET_UNUSED(v) do { \
- (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_UNUSED; \
- } while (0)
-#define DUK_TVAL_SET_NULL(v) do { \
- (v)->us[DUK_DBL_IDX_US0] = (duk_uint16_t) DUK_TAG_NULL; \
- } while (0)
-
-#define DUK_TVAL_SET_BOOLEAN(v,val) DUK_DBLUNION_SET_HIGH32((v), (((duk_uint32_t) DUK_TAG_BOOLEAN) << 16) | ((duk_uint32_t) (val)))
-
-#define DUK_TVAL_SET_NAN(v) DUK_DBLUNION_SET_NAN_FULL((v))
-
-/* Assumes that caller has normalized NaNs, otherwise trouble ahead. */
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_DOUBLE(v,d) do { \
- duk_double_t duk__dblval; \
- duk__dblval = (d); \
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \
- DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT(v,i) DUK__TVAL_SET_FASTINT((v), (i))
-#define DUK_TVAL_SET_FASTINT_I32(v,i) DUK__TVAL_SET_FASTINT_I32((v), (i))
-#define DUK_TVAL_SET_FASTINT_U32(v,i) DUK__TVAL_SET_FASTINT_U32((v), (i))
-#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) duk_tval_set_number_chkfast((v), (d))
-#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
-#define DUK_TVAL_CHKFAST_INPLACE(v) do { \
- duk_tval *duk__tv; \
- duk_double_t duk__d; \
- duk__tv = (v); \
- if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \
- duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \
- DUK_TVAL_SET_NUMBER_CHKFAST(duk__tv, duk__d); \
- } \
- } while (0)
-#else
-#define DUK_TVAL_SET_DOUBLE(v,d) do { \
- duk_double_t duk__dblval; \
- duk__dblval = (d); \
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(duk__dblval); \
- DUK_DBLUNION_SET_DOUBLE((v), duk__dblval); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT(v,i) DUK_TVAL_SET_DOUBLE((v), (duk_double_t) (i)) /* XXX: fast int-to-double */
-#define DUK_TVAL_SET_FASTINT_I32(v,i) DUK_TVAL_SET_DOUBLE((v), (duk_double_t) (i))
-#define DUK_TVAL_SET_FASTINT_U32(v,i) DUK_TVAL_SET_DOUBLE((v), (duk_double_t) (i))
-#define DUK_TVAL_SET_NUMBER_CHKFAST(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
-#define DUK_TVAL_SET_NUMBER(v,d) DUK_TVAL_SET_DOUBLE((v), (d))
-#define DUK_TVAL_CHKFAST_INPLACE(v) do { } while (0)
-#endif
-
-#define DUK_TVAL_SET_LIGHTFUNC(v,fp,flags) DUK__TVAL_SET_LIGHTFUNC((v), (fp), (flags))
-#define DUK_TVAL_SET_STRING(v,h) DUK__TVAL_SET_TAGGEDPOINTER((v), (h), DUK_TAG_STRING)
-#define DUK_TVAL_SET_OBJECT(v,h) DUK__TVAL_SET_TAGGEDPOINTER((v), (h), DUK_TAG_OBJECT)
-#define DUK_TVAL_SET_BUFFER(v,h) DUK__TVAL_SET_TAGGEDPOINTER((v), (h), DUK_TAG_BUFFER)
-#define DUK_TVAL_SET_POINTER(v,p) DUK__TVAL_SET_TAGGEDPOINTER((v), (p), DUK_TAG_POINTER)
-
-#define DUK_TVAL_SET_TVAL(v,x) do { *(v) = *(x); } while (0)
-
-/* getters */
-#define DUK_TVAL_GET_BOOLEAN(v) ((int) (v)->us[DUK_DBL_IDX_US1])
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_GET_DOUBLE(v) ((v)->d)
-#define DUK_TVAL_GET_FASTINT(v) DUK__TVAL_GET_FASTINT((v))
-#define DUK_TVAL_GET_FASTINT_U32(v) DUK__TVAL_GET_FASTINT_U32((v))
-#define DUK_TVAL_GET_FASTINT_I32(v) DUK__TVAL_GET_FASTINT_I32((v))
-#define DUK_TVAL_GET_NUMBER(v) duk_tval_get_number_packed((v))
-#else
-#define DUK_TVAL_GET_NUMBER(v) ((v)->d)
-#define DUK_TVAL_GET_DOUBLE(v) ((v)->d)
-#endif
-#define DUK_TVAL_GET_LIGHTFUNC(v,out_fp,out_flags) do { \
- (out_flags) = (v)->ui[DUK_DBL_IDX_UI0] & 0xffffUL; \
- (out_fp) = (duk_c_function) (v)->ui[DUK_DBL_IDX_UI1]; \
- } while (0)
-#define DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(v) ((duk_c_function) ((v)->ui[DUK_DBL_IDX_UI1]))
-#define DUK_TVAL_GET_LIGHTFUNC_FLAGS(v) (((int) (v)->ui[DUK_DBL_IDX_UI0]) & 0xffffUL)
-#define DUK_TVAL_GET_STRING(v) ((duk_hstring *) (v)->vp[DUK_DBL_IDX_VP1])
-#define DUK_TVAL_GET_OBJECT(v) ((duk_hobject *) (v)->vp[DUK_DBL_IDX_VP1])
-#define DUK_TVAL_GET_BUFFER(v) ((duk_hbuffer *) (v)->vp[DUK_DBL_IDX_VP1])
-#define DUK_TVAL_GET_POINTER(v) ((void *) (v)->vp[DUK_DBL_IDX_VP1])
-#define DUK_TVAL_GET_HEAPHDR(v) ((duk_heaphdr *) (v)->vp[DUK_DBL_IDX_VP1])
-
-/* decoding */
-#define DUK_TVAL_GET_TAG(v) ((duk_small_uint_t) (v)->us[DUK_DBL_IDX_US0])
-
-#define DUK_TVAL_IS_UNDEFINED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNDEFINED)
-#define DUK_TVAL_IS_UNUSED(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_UNUSED)
-#define DUK_TVAL_IS_NULL(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_NULL)
-#define DUK_TVAL_IS_BOOLEAN(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_BOOLEAN)
-#define DUK_TVAL_IS_BOOLEAN_TRUE(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_TRUE)
-#define DUK_TVAL_IS_BOOLEAN_FALSE(v) ((v)->ui[DUK_DBL_IDX_UI0] == DUK_XTAG_BOOLEAN_FALSE)
-#define DUK_TVAL_IS_LIGHTFUNC(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_LIGHTFUNC)
-#define DUK_TVAL_IS_STRING(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_STRING)
-#define DUK_TVAL_IS_OBJECT(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_OBJECT)
-#define DUK_TVAL_IS_BUFFER(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_BUFFER)
-#define DUK_TVAL_IS_POINTER(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_POINTER)
-#if defined(DUK_USE_FASTINT)
-/* 0xfff0 is -Infinity */
-#define DUK_TVAL_IS_DOUBLE(v) (DUK_TVAL_GET_TAG((v)) <= 0xfff0UL)
-#define DUK_TVAL_IS_FASTINT(v) (DUK_TVAL_GET_TAG((v)) == DUK_TAG_FASTINT)
-#define DUK_TVAL_IS_NUMBER(v) (DUK_TVAL_GET_TAG((v)) <= 0xfff1UL)
-#else
-#define DUK_TVAL_IS_NUMBER(v) (DUK_TVAL_GET_TAG((v)) <= 0xfff0UL)
-#define DUK_TVAL_IS_DOUBLE(v) DUK_TVAL_IS_NUMBER((v))
-#endif
-
-/* This is performance critical because it appears in every DECREF. */
-#define DUK_TVAL_IS_HEAP_ALLOCATED(v) (DUK_TVAL_GET_TAG((v)) >= DUK_TAG_STRING)
-
-#if defined(DUK_USE_FASTINT)
-DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_packed(duk_tval *tv);
-#endif
-
-#else /* DUK_USE_PACKED_TVAL */
-/* ======================================================================== */
-
-/*
- * Portable 12-byte representation
- */
-
-/* Note: not initializing all bytes is normally not an issue: Duktape won't
- * read or use the uninitialized bytes so valgrind won't issue warnings.
- * In some special cases a harmless valgrind warning may be issued though.
- * For example, the DumpHeap debugger command writes out a compiled function's
- * 'data' area as is, including any uninitialized bytes, which causes a
- * valgrind warning.
- */
-
-typedef struct duk_tval_struct duk_tval;
-
-struct duk_tval_struct {
- duk_small_uint_t t;
- duk_small_uint_t v_extra;
- union {
- duk_double_t d;
- duk_small_int_t i;
-#if defined(DUK_USE_FASTINT)
- duk_int64_t fi; /* if present, forces 16-byte duk_tval */
-#endif
- void *voidptr;
- duk_hstring *hstring;
- duk_hobject *hobject;
- duk_hcompiledfunction *hcompiledfunction;
- duk_hnativefunction *hnativefunction;
- duk_hthread *hthread;
- duk_hbuffer *hbuffer;
- duk_heaphdr *heaphdr;
- duk_c_function lightfunc;
- } v;
-};
-
-#define DUK__TAG_NUMBER 0 /* not exposed */
-#if defined(DUK_USE_FASTINT)
-#define DUK_TAG_FASTINT 1
-#endif
-#define DUK_TAG_UNDEFINED 2
-#define DUK_TAG_NULL 3
-#define DUK_TAG_BOOLEAN 4
-#define DUK_TAG_POINTER 5
-#define DUK_TAG_LIGHTFUNC 6
-#define DUK_TAG_UNUSED 7 /* marker; not actual tagged type */
-#define DUK_TAG_STRING 8 /* first heap allocated, match bit boundary */
-#define DUK_TAG_OBJECT 9
-#define DUK_TAG_BUFFER 10
-
-/* DUK__TAG_NUMBER is intentionally first, as it is the default clause in code
- * to support the 8-byte representation. Further, it is a non-heap-allocated
- * type so it should come before DUK_TAG_STRING. Finally, it should not break
- * the tag value ranges covered by case-clauses in a switch-case.
- */
-
-/* setters */
-#define DUK_TVAL_SET_UNDEFINED(tv) do { \
- (tv)->t = DUK_TAG_UNDEFINED; \
- } while (0)
-
-#define DUK_TVAL_SET_UNUSED(tv) do { \
- (tv)->t = DUK_TAG_UNUSED; \
- } while (0)
-
-#define DUK_TVAL_SET_NULL(tv) do { \
- (tv)->t = DUK_TAG_NULL; \
- } while (0)
-
-#define DUK_TVAL_SET_BOOLEAN(tv,val) do { \
- (tv)->t = DUK_TAG_BOOLEAN; \
- (tv)->v.i = (val); \
- } while (0)
-
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_DOUBLE(tv,val) do { \
- (tv)->t = DUK__TAG_NUMBER; \
- (tv)->v.d = (val); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT(tv,val) do { \
- (tv)->t = DUK_TAG_FASTINT; \
- (tv)->v.fi = (val); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_U32(tv,val) do { \
- (tv)->t = DUK_TAG_FASTINT; \
- (tv)->v.fi = (duk_int64_t) (val); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_I32(tv,val) do { \
- (tv)->t = DUK_TAG_FASTINT; \
- (tv)->v.fi = (duk_int64_t) (val); \
- } while (0)
-#define DUK_TVAL_SET_NUMBER_CHKFAST(tv,d) \
- duk_tval_set_number_chkfast((tv), (d))
-#define DUK_TVAL_SET_NUMBER(tv,val) \
- DUK_TVAL_SET_DOUBLE((tv), (val))
-#define DUK_TVAL_CHKFAST_INPLACE(v) do { \
- duk_tval *duk__tv; \
- duk_double_t duk__d; \
- duk__tv = (v); \
- if (DUK_TVAL_IS_DOUBLE(duk__tv)) { \
- duk__d = DUK_TVAL_GET_DOUBLE(duk__tv); \
- DUK_TVAL_SET_NUMBER_CHKFAST(duk__tv, duk__d); \
- } \
- } while (0)
-#else
-#define DUK_TVAL_SET_DOUBLE(tv,d) \
- DUK_TVAL_SET_NUMBER((tv), (d))
-#define DUK_TVAL_SET_FASTINT(tv,val) \
- DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val)) /* XXX: fast int-to-double */
-#define DUK_TVAL_SET_FASTINT_U32(tv,val) \
- DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val))
-#define DUK_TVAL_SET_FASTINT_I32(tv,val) \
- DUK_TVAL_SET_NUMBER((tv), (duk_double_t) (val))
-#define DUK_TVAL_SET_NUMBER(tv,val) do { \
- (tv)->t = DUK__TAG_NUMBER; \
- (tv)->v.d = (val); \
- } while (0)
-#define DUK_TVAL_SET_NUMBER_CHKFAST(tv,d) \
- DUK_TVAL_SET_NUMBER((tv), (d))
-#define DUK_TVAL_CHKFAST_INPLACE(v) do { } while (0)
-#endif /* DUK_USE_FASTINT */
-
-#define DUK_TVAL_SET_POINTER(tv,hptr) do { \
- (tv)->t = DUK_TAG_POINTER; \
- (tv)->v.voidptr = (hptr); \
- } while (0)
-
-#define DUK_TVAL_SET_LIGHTFUNC(tv,fp,flags) do { \
- (tv)->t = DUK_TAG_LIGHTFUNC; \
- (tv)->v_extra = (flags); \
- (tv)->v.lightfunc = (duk_c_function) (fp); \
- } while (0)
-
-#define DUK_TVAL_SET_STRING(tv,hptr) do { \
- (tv)->t = DUK_TAG_STRING; \
- (tv)->v.hstring = (hptr); \
- } while (0)
-
-#define DUK_TVAL_SET_OBJECT(tv,hptr) do { \
- (tv)->t = DUK_TAG_OBJECT; \
- (tv)->v.hobject = (hptr); \
- } while (0)
-
-#define DUK_TVAL_SET_BUFFER(tv,hptr) do { \
- (tv)->t = DUK_TAG_BUFFER; \
- (tv)->v.hbuffer = (hptr); \
- } while (0)
-
-#define DUK_TVAL_SET_NAN(tv) do { \
- /* in non-packed representation we don't care about which NaN is used */ \
- (tv)->t = DUK__TAG_NUMBER; \
- (tv)->v.d = DUK_DOUBLE_NAN; \
- } while (0)
-
-#define DUK_TVAL_SET_TVAL(v,x) do { *(v) = *(x); } while (0)
-
-/* getters */
-#define DUK_TVAL_GET_BOOLEAN(tv) ((tv)->v.i)
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->v.d)
-#define DUK_TVAL_GET_FASTINT(tv) ((tv)->v.fi)
-#define DUK_TVAL_GET_FASTINT_U32(tv) ((duk_uint32_t) ((tv)->v.fi))
-#define DUK_TVAL_GET_FASTINT_I32(tv) ((duk_int32_t) ((tv)->v.fi))
-#if 0
-#define DUK_TVAL_GET_NUMBER(tv) (DUK_TVAL_IS_FASTINT((tv)) ? \
- (duk_double_t) DUK_TVAL_GET_FASTINT((tv)) : \
- DUK_TVAL_GET_DOUBLE((tv)))
-#define DUK_TVAL_GET_NUMBER(tv) duk_tval_get_number_unpacked((tv))
-#else
-/* This seems reasonable overall. */
-#define DUK_TVAL_GET_NUMBER(tv) (DUK_TVAL_IS_FASTINT((tv)) ? \
- duk_tval_get_number_unpacked_fastint((tv)) : \
- DUK_TVAL_GET_DOUBLE((tv)))
-#endif
-#else
-#define DUK_TVAL_GET_NUMBER(tv) ((tv)->v.d)
-#define DUK_TVAL_GET_DOUBLE(tv) ((tv)->v.d)
-#endif /* DUK_USE_FASTINT */
-#define DUK_TVAL_GET_POINTER(tv) ((tv)->v.voidptr)
-#define DUK_TVAL_GET_LIGHTFUNC(tv,out_fp,out_flags) do { \
- (out_flags) = (duk_uint32_t) (tv)->v_extra; \
- (out_fp) = (tv)->v.lightfunc; \
- } while (0)
-#define DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv) ((tv)->v.lightfunc)
-#define DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv) ((duk_uint32_t) ((tv)->v_extra))
-#define DUK_TVAL_GET_STRING(tv) ((tv)->v.hstring)
-#define DUK_TVAL_GET_OBJECT(tv) ((tv)->v.hobject)
-#define DUK_TVAL_GET_BUFFER(tv) ((tv)->v.hbuffer)
-#define DUK_TVAL_GET_HEAPHDR(tv) ((tv)->v.heaphdr)
-
-/* decoding */
-#define DUK_TVAL_GET_TAG(tv) ((tv)->t)
-#define DUK_TVAL_IS_UNDEFINED(tv) ((tv)->t == DUK_TAG_UNDEFINED)
-#define DUK_TVAL_IS_UNUSED(tv) ((tv)->t == DUK_TAG_UNUSED)
-#define DUK_TVAL_IS_NULL(tv) ((tv)->t == DUK_TAG_NULL)
-#define DUK_TVAL_IS_BOOLEAN(tv) ((tv)->t == DUK_TAG_BOOLEAN)
-#define DUK_TVAL_IS_BOOLEAN_TRUE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i != 0))
-#define DUK_TVAL_IS_BOOLEAN_FALSE(tv) (((tv)->t == DUK_TAG_BOOLEAN) && ((tv)->v.i == 0))
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_IS_DOUBLE(tv) ((tv)->t == DUK__TAG_NUMBER)
-#define DUK_TVAL_IS_FASTINT(tv) ((tv)->t == DUK_TAG_FASTINT)
-#define DUK_TVAL_IS_NUMBER(tv) ((tv)->t == DUK__TAG_NUMBER || \
- (tv)->t == DUK_TAG_FASTINT)
-#else
-#define DUK_TVAL_IS_NUMBER(tv) ((tv)->t == DUK__TAG_NUMBER)
-#define DUK_TVAL_IS_DOUBLE(v) DUK_TVAL_IS_NUMBER((v))
-#endif /* DUK_USE_FASTINT */
-#define DUK_TVAL_IS_POINTER(tv) ((tv)->t == DUK_TAG_POINTER)
-#define DUK_TVAL_IS_LIGHTFUNC(tv) ((tv)->t == DUK_TAG_LIGHTFUNC)
-#define DUK_TVAL_IS_STRING(tv) ((tv)->t == DUK_TAG_STRING)
-#define DUK_TVAL_IS_OBJECT(tv) ((tv)->t == DUK_TAG_OBJECT)
-#define DUK_TVAL_IS_BUFFER(tv) ((tv)->t == DUK_TAG_BUFFER)
-
-/* This is performance critical because it's needed for every DECREF.
- * Take advantage of the fact that the first heap allocated tag is 8,
- * so that bit 3 is set for all heap allocated tags (and never set for
- * non-heap-allocated tags).
- */
-#if 0
-#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t >= DUK_TAG_STRING)
-#endif
-#define DUK_TVAL_IS_HEAP_ALLOCATED(tv) ((tv)->t & 0x08)
-
-#if defined(DUK_USE_FASTINT)
-#if 0
-DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_unpacked(duk_tval *tv);
-#endif
-DUK_INTERNAL_DECL duk_double_t duk_tval_get_number_unpacked_fastint(duk_tval *tv);
-#endif
-
-#endif /* DUK_USE_PACKED_TVAL */
-
-/*
- * Convenience (independent of representation)
- */
-
-#define DUK_TVAL_SET_BOOLEAN_TRUE(v) DUK_TVAL_SET_BOOLEAN(v, 1)
-#define DUK_TVAL_SET_BOOLEAN_FALSE(v) DUK_TVAL_SET_BOOLEAN(v, 0)
-
-/* Lightfunc flags packing and unpacking. */
-/* Sign extend: 0x0000##00 -> 0x##000000 -> sign extend to 0xssssss## */
-#define DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags) \
- ((((duk_int32_t) (lf_flags)) << 16) >> 24)
-#define DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags) \
- (((lf_flags) >> 4) & 0x0f)
-#define DUK_LFUNC_FLAGS_GET_NARGS(lf_flags) \
- ((lf_flags) & 0x0f)
-#define DUK_LFUNC_FLAGS_PACK(magic,length,nargs) \
- (((magic) & 0xff) << 8) | ((length) << 4) | (nargs)
-
-#define DUK_LFUNC_NARGS_VARARGS 0x0f /* varargs marker */
-#define DUK_LFUNC_NARGS_MIN 0x00
-#define DUK_LFUNC_NARGS_MAX 0x0e /* max, excl. varargs marker */
-#define DUK_LFUNC_LENGTH_MIN 0x00
-#define DUK_LFUNC_LENGTH_MAX 0x0f
-#define DUK_LFUNC_MAGIC_MIN (-0x80)
-#define DUK_LFUNC_MAGIC_MAX 0x7f
-
-/* fastint constants etc */
-#if defined(DUK_USE_FASTINT)
-#define DUK_FASTINT_MIN (-0x800000000000LL)
-#define DUK_FASTINT_MAX 0x7fffffffffffLL
-#define DUK_FASTINT_BITS 48
-
-DUK_INTERNAL_DECL void duk_tval_set_number_chkfast(duk_tval *tv, duk_double_t x);
-#endif
-
-#endif /* DUK_TVAL_H_INCLUDED */
-#line 1 "duk_builtins.h"
-/*
- * Automatically generated by genbuiltins.py, do not edit!
- */
-
-#ifndef DUK_BUILTINS_H_INCLUDED
-#define DUK_BUILTINS_H_INCLUDED
-
-#if defined(DUK_USE_ROM_STRINGS)
-#error ROM support not enabled, rerun make_dist.py with --rom-support
-#else /* DUK_USE_ROM_STRINGS */
-#define DUK_STRIDX_UC_UNDEFINED 0 /* 'Undefined' */
-#define DUK_HEAP_STRING_UC_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_UNDEFINED)
-#define DUK_HTHREAD_STRING_UC_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_UNDEFINED)
-#define DUK_STRIDX_UC_NULL 1 /* 'Null' */
-#define DUK_HEAP_STRING_UC_NULL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_NULL)
-#define DUK_HTHREAD_STRING_UC_NULL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_NULL)
-#define DUK_STRIDX_UC_ARGUMENTS 2 /* 'Arguments' */
-#define DUK_HEAP_STRING_UC_ARGUMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_ARGUMENTS)
-#define DUK_HTHREAD_STRING_UC_ARGUMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_ARGUMENTS)
-#define DUK_STRIDX_UC_OBJECT 3 /* 'Object' */
-#define DUK_HEAP_STRING_UC_OBJECT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_OBJECT)
-#define DUK_HTHREAD_STRING_UC_OBJECT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_OBJECT)
-#define DUK_STRIDX_UC_FUNCTION 4 /* 'Function' */
-#define DUK_HEAP_STRING_UC_FUNCTION(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_FUNCTION)
-#define DUK_HTHREAD_STRING_UC_FUNCTION(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_FUNCTION)
-#define DUK_STRIDX_ARRAY 5 /* 'Array' */
-#define DUK_HEAP_STRING_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ARRAY)
-#define DUK_HTHREAD_STRING_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ARRAY)
-#define DUK_STRIDX_UC_STRING 6 /* 'String' */
-#define DUK_HEAP_STRING_UC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_STRING)
-#define DUK_HTHREAD_STRING_UC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_STRING)
-#define DUK_STRIDX_UC_BOOLEAN 7 /* 'Boolean' */
-#define DUK_HEAP_STRING_UC_BOOLEAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_BOOLEAN)
-#define DUK_HTHREAD_STRING_UC_BOOLEAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_BOOLEAN)
-#define DUK_STRIDX_UC_NUMBER 8 /* 'Number' */
-#define DUK_HEAP_STRING_UC_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_NUMBER)
-#define DUK_HTHREAD_STRING_UC_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_NUMBER)
-#define DUK_STRIDX_DATE 9 /* 'Date' */
-#define DUK_HEAP_STRING_DATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DATE)
-#define DUK_HTHREAD_STRING_DATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DATE)
-#define DUK_STRIDX_REG_EXP 10 /* 'RegExp' */
-#define DUK_HEAP_STRING_REG_EXP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_REG_EXP)
-#define DUK_HTHREAD_STRING_REG_EXP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_REG_EXP)
-#define DUK_STRIDX_UC_ERROR 11 /* 'Error' */
-#define DUK_HEAP_STRING_UC_ERROR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_ERROR)
-#define DUK_HTHREAD_STRING_UC_ERROR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_ERROR)
-#define DUK_STRIDX_MATH 12 /* 'Math' */
-#define DUK_HEAP_STRING_MATH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MATH)
-#define DUK_HTHREAD_STRING_MATH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MATH)
-#define DUK_STRIDX_JSON 13 /* 'JSON' */
-#define DUK_HEAP_STRING_JSON(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON)
-#define DUK_HTHREAD_STRING_JSON(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON)
-#define DUK_STRIDX_EMPTY_STRING 14 /* '' */
-#define DUK_HEAP_STRING_EMPTY_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EMPTY_STRING)
-#define DUK_HTHREAD_STRING_EMPTY_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EMPTY_STRING)
-#define DUK_STRIDX_ARRAY_BUFFER 15 /* 'ArrayBuffer' */
-#define DUK_HEAP_STRING_ARRAY_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ARRAY_BUFFER)
-#define DUK_HTHREAD_STRING_ARRAY_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ARRAY_BUFFER)
-#define DUK_STRIDX_DATA_VIEW 16 /* 'DataView' */
-#define DUK_HEAP_STRING_DATA_VIEW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DATA_VIEW)
-#define DUK_HTHREAD_STRING_DATA_VIEW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DATA_VIEW)
-#define DUK_STRIDX_INT8_ARRAY 17 /* 'Int8Array' */
-#define DUK_HEAP_STRING_INT8_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT8_ARRAY)
-#define DUK_HTHREAD_STRING_INT8_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT8_ARRAY)
-#define DUK_STRIDX_UINT8_ARRAY 18 /* 'Uint8Array' */
-#define DUK_HEAP_STRING_UINT8_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT8_ARRAY)
-#define DUK_HTHREAD_STRING_UINT8_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT8_ARRAY)
-#define DUK_STRIDX_UINT8_CLAMPED_ARRAY 19 /* 'Uint8ClampedArray' */
-#define DUK_HEAP_STRING_UINT8_CLAMPED_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT8_CLAMPED_ARRAY)
-#define DUK_HTHREAD_STRING_UINT8_CLAMPED_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT8_CLAMPED_ARRAY)
-#define DUK_STRIDX_INT16_ARRAY 20 /* 'Int16Array' */
-#define DUK_HEAP_STRING_INT16_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT16_ARRAY)
-#define DUK_HTHREAD_STRING_INT16_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT16_ARRAY)
-#define DUK_STRIDX_UINT16_ARRAY 21 /* 'Uint16Array' */
-#define DUK_HEAP_STRING_UINT16_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT16_ARRAY)
-#define DUK_HTHREAD_STRING_UINT16_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT16_ARRAY)
-#define DUK_STRIDX_INT32_ARRAY 22 /* 'Int32Array' */
-#define DUK_HEAP_STRING_INT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT32_ARRAY)
-#define DUK_HTHREAD_STRING_INT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT32_ARRAY)
-#define DUK_STRIDX_UINT32_ARRAY 23 /* 'Uint32Array' */
-#define DUK_HEAP_STRING_UINT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UINT32_ARRAY)
-#define DUK_HTHREAD_STRING_UINT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UINT32_ARRAY)
-#define DUK_STRIDX_FLOAT32_ARRAY 24 /* 'Float32Array' */
-#define DUK_HEAP_STRING_FLOAT32_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FLOAT32_ARRAY)
-#define DUK_HTHREAD_STRING_FLOAT32_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FLOAT32_ARRAY)
-#define DUK_STRIDX_FLOAT64_ARRAY 25 /* 'Float64Array' */
-#define DUK_HEAP_STRING_FLOAT64_ARRAY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FLOAT64_ARRAY)
-#define DUK_HTHREAD_STRING_FLOAT64_ARRAY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FLOAT64_ARRAY)
-#define DUK_STRIDX_GLOBAL 26 /* 'global' */
-#define DUK_HEAP_STRING_GLOBAL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_GLOBAL)
-#define DUK_HTHREAD_STRING_GLOBAL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_GLOBAL)
-#define DUK_STRIDX_OBJ_ENV 27 /* 'ObjEnv' */
-#define DUK_HEAP_STRING_OBJ_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_OBJ_ENV)
-#define DUK_HTHREAD_STRING_OBJ_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_OBJ_ENV)
-#define DUK_STRIDX_DEC_ENV 28 /* 'DecEnv' */
-#define DUK_HEAP_STRING_DEC_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEC_ENV)
-#define DUK_HTHREAD_STRING_DEC_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEC_ENV)
-#define DUK_STRIDX_UC_BUFFER 29 /* 'Buffer' */
-#define DUK_HEAP_STRING_UC_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_BUFFER)
-#define DUK_HTHREAD_STRING_UC_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_BUFFER)
-#define DUK_STRIDX_UC_POINTER 30 /* 'Pointer' */
-#define DUK_HEAP_STRING_UC_POINTER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_POINTER)
-#define DUK_HTHREAD_STRING_UC_POINTER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_POINTER)
-#define DUK_STRIDX_UC_THREAD 31 /* 'Thread' */
-#define DUK_HEAP_STRING_UC_THREAD(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_UC_THREAD)
-#define DUK_HTHREAD_STRING_UC_THREAD(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_UC_THREAD)
-#define DUK_STRIDX_EVAL 32 /* 'eval' */
-#define DUK_HEAP_STRING_EVAL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EVAL)
-#define DUK_HTHREAD_STRING_EVAL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EVAL)
-#define DUK_STRIDX_DEFINE_PROPERTY 33 /* 'defineProperty' */
-#define DUK_HEAP_STRING_DEFINE_PROPERTY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEFINE_PROPERTY)
-#define DUK_HTHREAD_STRING_DEFINE_PROPERTY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEFINE_PROPERTY)
-#define DUK_STRIDX_VALUE 34 /* 'value' */
-#define DUK_HEAP_STRING_VALUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VALUE)
-#define DUK_HTHREAD_STRING_VALUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VALUE)
-#define DUK_STRIDX_WRITABLE 35 /* 'writable' */
-#define DUK_HEAP_STRING_WRITABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WRITABLE)
-#define DUK_HTHREAD_STRING_WRITABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WRITABLE)
-#define DUK_STRIDX_CONFIGURABLE 36 /* 'configurable' */
-#define DUK_HEAP_STRING_CONFIGURABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONFIGURABLE)
-#define DUK_HTHREAD_STRING_CONFIGURABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONFIGURABLE)
-#define DUK_STRIDX_ENUMERABLE 37 /* 'enumerable' */
-#define DUK_HEAP_STRING_ENUMERABLE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENUMERABLE)
-#define DUK_HTHREAD_STRING_ENUMERABLE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENUMERABLE)
-#define DUK_STRIDX_JOIN 38 /* 'join' */
-#define DUK_HEAP_STRING_JOIN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JOIN)
-#define DUK_HTHREAD_STRING_JOIN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JOIN)
-#define DUK_STRIDX_TO_LOCALE_STRING 39 /* 'toLocaleString' */
-#define DUK_HEAP_STRING_TO_LOCALE_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_LOCALE_STRING)
-#define DUK_HTHREAD_STRING_TO_LOCALE_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_LOCALE_STRING)
-#define DUK_STRIDX_VALUE_OF 40 /* 'valueOf' */
-#define DUK_HEAP_STRING_VALUE_OF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VALUE_OF)
-#define DUK_HTHREAD_STRING_VALUE_OF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VALUE_OF)
-#define DUK_STRIDX_TO_UTC_STRING 41 /* 'toUTCString' */
-#define DUK_HEAP_STRING_TO_UTC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_UTC_STRING)
-#define DUK_HTHREAD_STRING_TO_UTC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_UTC_STRING)
-#define DUK_STRIDX_TO_ISO_STRING 42 /* 'toISOString' */
-#define DUK_HEAP_STRING_TO_ISO_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_ISO_STRING)
-#define DUK_HTHREAD_STRING_TO_ISO_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_ISO_STRING)
-#define DUK_STRIDX_TO_GMT_STRING 43 /* 'toGMTString' */
-#define DUK_HEAP_STRING_TO_GMT_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_GMT_STRING)
-#define DUK_HTHREAD_STRING_TO_GMT_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_GMT_STRING)
-#define DUK_STRIDX_SOURCE 44 /* 'source' */
-#define DUK_HEAP_STRING_SOURCE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SOURCE)
-#define DUK_HTHREAD_STRING_SOURCE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SOURCE)
-#define DUK_STRIDX_IGNORE_CASE 45 /* 'ignoreCase' */
-#define DUK_HEAP_STRING_IGNORE_CASE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IGNORE_CASE)
-#define DUK_HTHREAD_STRING_IGNORE_CASE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IGNORE_CASE)
-#define DUK_STRIDX_MULTILINE 46 /* 'multiline' */
-#define DUK_HEAP_STRING_MULTILINE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MULTILINE)
-#define DUK_HTHREAD_STRING_MULTILINE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MULTILINE)
-#define DUK_STRIDX_LAST_INDEX 47 /* 'lastIndex' */
-#define DUK_HEAP_STRING_LAST_INDEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LAST_INDEX)
-#define DUK_HTHREAD_STRING_LAST_INDEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LAST_INDEX)
-#define DUK_STRIDX_ESCAPED_EMPTY_REGEXP 48 /* '(?:)' */
-#define DUK_HEAP_STRING_ESCAPED_EMPTY_REGEXP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ESCAPED_EMPTY_REGEXP)
-#define DUK_HTHREAD_STRING_ESCAPED_EMPTY_REGEXP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ESCAPED_EMPTY_REGEXP)
-#define DUK_STRIDX_INDEX 49 /* 'index' */
-#define DUK_HEAP_STRING_INDEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INDEX)
-#define DUK_HTHREAD_STRING_INDEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INDEX)
-#define DUK_STRIDX_PROTOTYPE 50 /* 'prototype' */
-#define DUK_HEAP_STRING_PROTOTYPE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PROTOTYPE)
-#define DUK_HTHREAD_STRING_PROTOTYPE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PROTOTYPE)
-#define DUK_STRIDX_CONSTRUCTOR 51 /* 'constructor' */
-#define DUK_HEAP_STRING_CONSTRUCTOR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONSTRUCTOR)
-#define DUK_HTHREAD_STRING_CONSTRUCTOR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONSTRUCTOR)
-#define DUK_STRIDX_MESSAGE 52 /* 'message' */
-#define DUK_HEAP_STRING_MESSAGE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MESSAGE)
-#define DUK_HTHREAD_STRING_MESSAGE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MESSAGE)
-#define DUK_STRIDX_LC_BOOLEAN 53 /* 'boolean' */
-#define DUK_HEAP_STRING_LC_BOOLEAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_BOOLEAN)
-#define DUK_HTHREAD_STRING_LC_BOOLEAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_BOOLEAN)
-#define DUK_STRIDX_LC_NUMBER 54 /* 'number' */
-#define DUK_HEAP_STRING_LC_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_NUMBER)
-#define DUK_HTHREAD_STRING_LC_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_NUMBER)
-#define DUK_STRIDX_LC_STRING 55 /* 'string' */
-#define DUK_HEAP_STRING_LC_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_STRING)
-#define DUK_HTHREAD_STRING_LC_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_STRING)
-#define DUK_STRIDX_LC_OBJECT 56 /* 'object' */
-#define DUK_HEAP_STRING_LC_OBJECT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_OBJECT)
-#define DUK_HTHREAD_STRING_LC_OBJECT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_OBJECT)
-#define DUK_STRIDX_LC_UNDEFINED 57 /* 'undefined' */
-#define DUK_HEAP_STRING_LC_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_UNDEFINED)
-#define DUK_HTHREAD_STRING_LC_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_UNDEFINED)
-#define DUK_STRIDX_NAN 58 /* 'NaN' */
-#define DUK_HEAP_STRING_NAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NAN)
-#define DUK_HTHREAD_STRING_NAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NAN)
-#define DUK_STRIDX_INFINITY 59 /* 'Infinity' */
-#define DUK_HEAP_STRING_INFINITY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INFINITY)
-#define DUK_HTHREAD_STRING_INFINITY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INFINITY)
-#define DUK_STRIDX_MINUS_INFINITY 60 /* '-Infinity' */
-#define DUK_HEAP_STRING_MINUS_INFINITY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MINUS_INFINITY)
-#define DUK_HTHREAD_STRING_MINUS_INFINITY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MINUS_INFINITY)
-#define DUK_STRIDX_MINUS_ZERO 61 /* '-0' */
-#define DUK_HEAP_STRING_MINUS_ZERO(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MINUS_ZERO)
-#define DUK_HTHREAD_STRING_MINUS_ZERO(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MINUS_ZERO)
-#define DUK_STRIDX_COMMA 62 /* ',' */
-#define DUK_HEAP_STRING_COMMA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_COMMA)
-#define DUK_HTHREAD_STRING_COMMA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_COMMA)
-#define DUK_STRIDX_SPACE 63 /* ' ' */
-#define DUK_HEAP_STRING_SPACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SPACE)
-#define DUK_HTHREAD_STRING_SPACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SPACE)
-#define DUK_STRIDX_NEWLINE_4SPACE 64 /* '\n ' */
-#define DUK_HEAP_STRING_NEWLINE_4SPACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NEWLINE_4SPACE)
-#define DUK_HTHREAD_STRING_NEWLINE_4SPACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NEWLINE_4SPACE)
-#define DUK_STRIDX_BRACKETED_ELLIPSIS 65 /* '[...]' */
-#define DUK_HEAP_STRING_BRACKETED_ELLIPSIS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BRACKETED_ELLIPSIS)
-#define DUK_HTHREAD_STRING_BRACKETED_ELLIPSIS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BRACKETED_ELLIPSIS)
-#define DUK_STRIDX_INVALID_DATE 66 /* 'Invalid Date' */
-#define DUK_HEAP_STRING_INVALID_DATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INVALID_DATE)
-#define DUK_HTHREAD_STRING_INVALID_DATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INVALID_DATE)
-#define DUK_STRIDX_LC_ARGUMENTS 67 /* 'arguments' */
-#define DUK_HEAP_STRING_LC_ARGUMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_ARGUMENTS)
-#define DUK_HTHREAD_STRING_LC_ARGUMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_ARGUMENTS)
-#define DUK_STRIDX_CALLEE 68 /* 'callee' */
-#define DUK_HEAP_STRING_CALLEE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CALLEE)
-#define DUK_HTHREAD_STRING_CALLEE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CALLEE)
-#define DUK_STRIDX_CALLER 69 /* 'caller' */
-#define DUK_HEAP_STRING_CALLER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CALLER)
-#define DUK_HTHREAD_STRING_CALLER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CALLER)
-#define DUK_STRIDX_HAS 70 /* 'has' */
-#define DUK_HEAP_STRING_HAS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_HAS)
-#define DUK_HTHREAD_STRING_HAS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_HAS)
-#define DUK_STRIDX_GET 71 /* 'get' */
-#define DUK_HEAP_STRING_GET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_GET)
-#define DUK_HTHREAD_STRING_GET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_GET)
-#define DUK_STRIDX_DELETE_PROPERTY 72 /* 'deleteProperty' */
-#define DUK_HEAP_STRING_DELETE_PROPERTY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DELETE_PROPERTY)
-#define DUK_HTHREAD_STRING_DELETE_PROPERTY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DELETE_PROPERTY)
-#define DUK_STRIDX_ENUMERATE 73 /* 'enumerate' */
-#define DUK_HEAP_STRING_ENUMERATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENUMERATE)
-#define DUK_HTHREAD_STRING_ENUMERATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENUMERATE)
-#define DUK_STRIDX_OWN_KEYS 74 /* 'ownKeys' */
-#define DUK_HEAP_STRING_OWN_KEYS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_OWN_KEYS)
-#define DUK_HTHREAD_STRING_OWN_KEYS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_OWN_KEYS)
-#define DUK_STRIDX_SET_PROTOTYPE_OF 75 /* 'setPrototypeOf' */
-#define DUK_HEAP_STRING_SET_PROTOTYPE_OF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SET_PROTOTYPE_OF)
-#define DUK_HTHREAD_STRING_SET_PROTOTYPE_OF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SET_PROTOTYPE_OF)
-#define DUK_STRIDX___PROTO__ 76 /* '__proto__' */
-#define DUK_HEAP_STRING___PROTO__(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX___PROTO__)
-#define DUK_HTHREAD_STRING___PROTO__(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX___PROTO__)
-#define DUK_STRIDX_REQUIRE 77 /* 'require' */
-#define DUK_HEAP_STRING_REQUIRE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_REQUIRE)
-#define DUK_HTHREAD_STRING_REQUIRE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_REQUIRE)
-#define DUK_STRIDX_ID 78 /* 'id' */
-#define DUK_HEAP_STRING_ID(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ID)
-#define DUK_HTHREAD_STRING_ID(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ID)
-#define DUK_STRIDX_EXPORTS 79 /* 'exports' */
-#define DUK_HEAP_STRING_EXPORTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EXPORTS)
-#define DUK_HTHREAD_STRING_EXPORTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EXPORTS)
-#define DUK_STRIDX_FILENAME 80 /* 'filename' */
-#define DUK_HEAP_STRING_FILENAME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FILENAME)
-#define DUK_HTHREAD_STRING_FILENAME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FILENAME)
-#define DUK_STRIDX_TO_STRING 81 /* 'toString' */
-#define DUK_HEAP_STRING_TO_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_STRING)
-#define DUK_HTHREAD_STRING_TO_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_STRING)
-#define DUK_STRIDX_TO_JSON 82 /* 'toJSON' */
-#define DUK_HEAP_STRING_TO_JSON(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_JSON)
-#define DUK_HTHREAD_STRING_TO_JSON(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_JSON)
-#define DUK_STRIDX_TYPE 83 /* 'type' */
-#define DUK_HEAP_STRING_TYPE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TYPE)
-#define DUK_HTHREAD_STRING_TYPE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TYPE)
-#define DUK_STRIDX_DATA 84 /* 'data' */
-#define DUK_HEAP_STRING_DATA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DATA)
-#define DUK_HTHREAD_STRING_DATA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DATA)
-#define DUK_STRIDX_LENGTH 85 /* 'length' */
-#define DUK_HEAP_STRING_LENGTH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LENGTH)
-#define DUK_HTHREAD_STRING_LENGTH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LENGTH)
-#define DUK_STRIDX_BYTE_LENGTH 86 /* 'byteLength' */
-#define DUK_HEAP_STRING_BYTE_LENGTH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BYTE_LENGTH)
-#define DUK_HTHREAD_STRING_BYTE_LENGTH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BYTE_LENGTH)
-#define DUK_STRIDX_BYTE_OFFSET 87 /* 'byteOffset' */
-#define DUK_HEAP_STRING_BYTE_OFFSET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BYTE_OFFSET)
-#define DUK_HTHREAD_STRING_BYTE_OFFSET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BYTE_OFFSET)
-#define DUK_STRIDX_BYTES_PER_ELEMENT 88 /* 'BYTES_PER_ELEMENT' */
-#define DUK_HEAP_STRING_BYTES_PER_ELEMENT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BYTES_PER_ELEMENT)
-#define DUK_HTHREAD_STRING_BYTES_PER_ELEMENT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BYTES_PER_ELEMENT)
-#define DUK_STRIDX_SET 89 /* 'set' */
-#define DUK_HEAP_STRING_SET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SET)
-#define DUK_HTHREAD_STRING_SET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SET)
-#define DUK_STRIDX_STACK 90 /* 'stack' */
-#define DUK_HEAP_STRING_STACK(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_STACK)
-#define DUK_HTHREAD_STRING_STACK(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_STACK)
-#define DUK_STRIDX_PC 91 /* 'pc' */
-#define DUK_HEAP_STRING_PC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PC)
-#define DUK_HTHREAD_STRING_PC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PC)
-#define DUK_STRIDX_LINE_NUMBER 92 /* 'lineNumber' */
-#define DUK_HEAP_STRING_LINE_NUMBER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LINE_NUMBER)
-#define DUK_HTHREAD_STRING_LINE_NUMBER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LINE_NUMBER)
-#define DUK_STRIDX_INT_TRACEDATA 93 /* '\xffTracedata' */
-#define DUK_HEAP_STRING_INT_TRACEDATA(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_TRACEDATA)
-#define DUK_HTHREAD_STRING_INT_TRACEDATA(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_TRACEDATA)
-#define DUK_STRIDX_NAME 94 /* 'name' */
-#define DUK_HEAP_STRING_NAME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NAME)
-#define DUK_HTHREAD_STRING_NAME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NAME)
-#define DUK_STRIDX_FILE_NAME 95 /* 'fileName' */
-#define DUK_HEAP_STRING_FILE_NAME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FILE_NAME)
-#define DUK_HTHREAD_STRING_FILE_NAME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FILE_NAME)
-#define DUK_STRIDX_LC_BUFFER 96 /* 'buffer' */
-#define DUK_HEAP_STRING_LC_BUFFER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_BUFFER)
-#define DUK_HTHREAD_STRING_LC_BUFFER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_BUFFER)
-#define DUK_STRIDX_LC_POINTER 97 /* 'pointer' */
-#define DUK_HEAP_STRING_LC_POINTER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_POINTER)
-#define DUK_HTHREAD_STRING_LC_POINTER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_POINTER)
-#define DUK_STRIDX_INT_VALUE 98 /* '\xffValue' */
-#define DUK_HEAP_STRING_INT_VALUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VALUE)
-#define DUK_HTHREAD_STRING_INT_VALUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VALUE)
-#define DUK_STRIDX_INT_NEXT 99 /* '\xffNext' */
-#define DUK_HEAP_STRING_INT_NEXT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_NEXT)
-#define DUK_HTHREAD_STRING_INT_NEXT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_NEXT)
-#define DUK_STRIDX_INT_BYTECODE 100 /* '\xffBytecode' */
-#define DUK_HEAP_STRING_INT_BYTECODE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_BYTECODE)
-#define DUK_HTHREAD_STRING_INT_BYTECODE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_BYTECODE)
-#define DUK_STRIDX_INT_FORMALS 101 /* '\xffFormals' */
-#define DUK_HEAP_STRING_INT_FORMALS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_FORMALS)
-#define DUK_HTHREAD_STRING_INT_FORMALS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_FORMALS)
-#define DUK_STRIDX_INT_VARMAP 102 /* '\xffVarmap' */
-#define DUK_HEAP_STRING_INT_VARMAP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VARMAP)
-#define DUK_HTHREAD_STRING_INT_VARMAP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VARMAP)
-#define DUK_STRIDX_INT_LEXENV 103 /* '\xffLexenv' */
-#define DUK_HEAP_STRING_INT_LEXENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_LEXENV)
-#define DUK_HTHREAD_STRING_INT_LEXENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_LEXENV)
-#define DUK_STRIDX_INT_VARENV 104 /* '\xffVarenv' */
-#define DUK_HEAP_STRING_INT_VARENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_VARENV)
-#define DUK_HTHREAD_STRING_INT_VARENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_VARENV)
-#define DUK_STRIDX_INT_SOURCE 105 /* '\xffSource' */
-#define DUK_HEAP_STRING_INT_SOURCE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_SOURCE)
-#define DUK_HTHREAD_STRING_INT_SOURCE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_SOURCE)
-#define DUK_STRIDX_INT_PC2LINE 106 /* '\xffPc2line' */
-#define DUK_HEAP_STRING_INT_PC2LINE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_PC2LINE)
-#define DUK_HTHREAD_STRING_INT_PC2LINE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_PC2LINE)
-#define DUK_STRIDX_INT_ARGS 107 /* '\xffArgs' */
-#define DUK_HEAP_STRING_INT_ARGS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_ARGS)
-#define DUK_HTHREAD_STRING_INT_ARGS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_ARGS)
-#define DUK_STRIDX_INT_MAP 108 /* '\xffMap' */
-#define DUK_HEAP_STRING_INT_MAP(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_MAP)
-#define DUK_HTHREAD_STRING_INT_MAP(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_MAP)
-#define DUK_STRIDX_INT_FINALIZER 109 /* '\xffFinalizer' */
-#define DUK_HEAP_STRING_INT_FINALIZER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_FINALIZER)
-#define DUK_HTHREAD_STRING_INT_FINALIZER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_FINALIZER)
-#define DUK_STRIDX_INT_HANDLER 110 /* '\xffHandler' */
-#define DUK_HEAP_STRING_INT_HANDLER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_HANDLER)
-#define DUK_HTHREAD_STRING_INT_HANDLER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_HANDLER)
-#define DUK_STRIDX_INT_CALLEE 111 /* '\xffCallee' */
-#define DUK_HEAP_STRING_INT_CALLEE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_CALLEE)
-#define DUK_HTHREAD_STRING_INT_CALLEE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_CALLEE)
-#define DUK_STRIDX_INT_THREAD 112 /* '\xffThread' */
-#define DUK_HEAP_STRING_INT_THREAD(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_THREAD)
-#define DUK_HTHREAD_STRING_INT_THREAD(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_THREAD)
-#define DUK_STRIDX_INT_REGBASE 113 /* '\xffRegbase' */
-#define DUK_HEAP_STRING_INT_REGBASE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_REGBASE)
-#define DUK_HTHREAD_STRING_INT_REGBASE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_REGBASE)
-#define DUK_STRIDX_INT_TARGET 114 /* '\xffTarget' */
-#define DUK_HEAP_STRING_INT_TARGET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_TARGET)
-#define DUK_HTHREAD_STRING_INT_TARGET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_TARGET)
-#define DUK_STRIDX_INT_THIS 115 /* '\xffThis' */
-#define DUK_HEAP_STRING_INT_THIS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INT_THIS)
-#define DUK_HTHREAD_STRING_INT_THIS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INT_THIS)
-#define DUK_STRIDX_COMPILE 116 /* 'compile' */
-#define DUK_HEAP_STRING_COMPILE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_COMPILE)
-#define DUK_HTHREAD_STRING_COMPILE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_COMPILE)
-#define DUK_STRIDX_INPUT 117 /* 'input' */
-#define DUK_HEAP_STRING_INPUT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INPUT)
-#define DUK_HTHREAD_STRING_INPUT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INPUT)
-#define DUK_STRIDX_ERR_CREATE 118 /* 'errCreate' */
-#define DUK_HEAP_STRING_ERR_CREATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ERR_CREATE)
-#define DUK_HTHREAD_STRING_ERR_CREATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ERR_CREATE)
-#define DUK_STRIDX_ERR_THROW 119 /* 'errThrow' */
-#define DUK_HEAP_STRING_ERR_THROW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ERR_THROW)
-#define DUK_HTHREAD_STRING_ERR_THROW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ERR_THROW)
-#define DUK_STRIDX_MOD_SEARCH 120 /* 'modSearch' */
-#define DUK_HEAP_STRING_MOD_SEARCH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MOD_SEARCH)
-#define DUK_HTHREAD_STRING_MOD_SEARCH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MOD_SEARCH)
-#define DUK_STRIDX_MOD_LOADED 121 /* 'modLoaded' */
-#define DUK_HEAP_STRING_MOD_LOADED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_MOD_LOADED)
-#define DUK_HTHREAD_STRING_MOD_LOADED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_MOD_LOADED)
-#define DUK_STRIDX_ENV 122 /* 'env' */
-#define DUK_HEAP_STRING_ENV(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENV)
-#define DUK_HTHREAD_STRING_ENV(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENV)
-#define DUK_STRIDX_HEX 123 /* 'hex' */
-#define DUK_HEAP_STRING_HEX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_HEX)
-#define DUK_HTHREAD_STRING_HEX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_HEX)
-#define DUK_STRIDX_BASE64 124 /* 'base64' */
-#define DUK_HEAP_STRING_BASE64(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BASE64)
-#define DUK_HTHREAD_STRING_BASE64(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BASE64)
-#define DUK_STRIDX_JX 125 /* 'jx' */
-#define DUK_HEAP_STRING_JX(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JX)
-#define DUK_HTHREAD_STRING_JX(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JX)
-#define DUK_STRIDX_JC 126 /* 'jc' */
-#define DUK_HEAP_STRING_JC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JC)
-#define DUK_HTHREAD_STRING_JC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JC)
-#define DUK_STRIDX_RESUME 127 /* 'resume' */
-#define DUK_HEAP_STRING_RESUME(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_RESUME)
-#define DUK_HTHREAD_STRING_RESUME(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_RESUME)
-#define DUK_STRIDX_FMT 128 /* 'fmt' */
-#define DUK_HEAP_STRING_FMT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FMT)
-#define DUK_HTHREAD_STRING_FMT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FMT)
-#define DUK_STRIDX_RAW 129 /* 'raw' */
-#define DUK_HEAP_STRING_RAW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_RAW)
-#define DUK_HTHREAD_STRING_RAW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_RAW)
-#define DUK_STRIDX_LC_TRACE 130 /* 'trace' */
-#define DUK_HEAP_STRING_LC_TRACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_TRACE)
-#define DUK_HTHREAD_STRING_LC_TRACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_TRACE)
-#define DUK_STRIDX_LC_DEBUG 131 /* 'debug' */
-#define DUK_HEAP_STRING_LC_DEBUG(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_DEBUG)
-#define DUK_HTHREAD_STRING_LC_DEBUG(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_DEBUG)
-#define DUK_STRIDX_LC_INFO 132 /* 'info' */
-#define DUK_HEAP_STRING_LC_INFO(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_INFO)
-#define DUK_HTHREAD_STRING_LC_INFO(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_INFO)
-#define DUK_STRIDX_LC_WARN 133 /* 'warn' */
-#define DUK_HEAP_STRING_LC_WARN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_WARN)
-#define DUK_HTHREAD_STRING_LC_WARN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_WARN)
-#define DUK_STRIDX_LC_ERROR 134 /* 'error' */
-#define DUK_HEAP_STRING_LC_ERROR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_ERROR)
-#define DUK_HTHREAD_STRING_LC_ERROR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_ERROR)
-#define DUK_STRIDX_LC_FATAL 135 /* 'fatal' */
-#define DUK_HEAP_STRING_LC_FATAL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_FATAL)
-#define DUK_HTHREAD_STRING_LC_FATAL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_FATAL)
-#define DUK_STRIDX_LC_N 136 /* 'n' */
-#define DUK_HEAP_STRING_LC_N(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_N)
-#define DUK_HTHREAD_STRING_LC_N(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_N)
-#define DUK_STRIDX_LC_L 137 /* 'l' */
-#define DUK_HEAP_STRING_LC_L(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_L)
-#define DUK_HTHREAD_STRING_LC_L(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_L)
-#define DUK_STRIDX_CLOG 138 /* 'clog' */
-#define DUK_HEAP_STRING_CLOG(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CLOG)
-#define DUK_HTHREAD_STRING_CLOG(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CLOG)
-#define DUK_STRIDX_TO_LOG_STRING 139 /* 'toLogString' */
-#define DUK_HEAP_STRING_TO_LOG_STRING(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TO_LOG_STRING)
-#define DUK_HTHREAD_STRING_TO_LOG_STRING(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TO_LOG_STRING)
-#define DUK_STRIDX_JSON_EXT_UNDEFINED 140 /* '{"_undef":true}' */
-#define DUK_HEAP_STRING_JSON_EXT_UNDEFINED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_UNDEFINED)
-#define DUK_HTHREAD_STRING_JSON_EXT_UNDEFINED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_UNDEFINED)
-#define DUK_STRIDX_JSON_EXT_NAN 141 /* '{"_nan":true}' */
-#define DUK_HEAP_STRING_JSON_EXT_NAN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_NAN)
-#define DUK_HTHREAD_STRING_JSON_EXT_NAN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_NAN)
-#define DUK_STRIDX_JSON_EXT_POSINF 142 /* '{"_inf":true}' */
-#define DUK_HEAP_STRING_JSON_EXT_POSINF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_POSINF)
-#define DUK_HTHREAD_STRING_JSON_EXT_POSINF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_POSINF)
-#define DUK_STRIDX_JSON_EXT_NEGINF 143 /* '{"_ninf":true}' */
-#define DUK_HEAP_STRING_JSON_EXT_NEGINF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_NEGINF)
-#define DUK_HTHREAD_STRING_JSON_EXT_NEGINF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_NEGINF)
-#define DUK_STRIDX_JSON_EXT_FUNCTION1 144 /* '{"_func":true}' */
-#define DUK_HEAP_STRING_JSON_EXT_FUNCTION1(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_FUNCTION1)
-#define DUK_HTHREAD_STRING_JSON_EXT_FUNCTION1(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_FUNCTION1)
-#define DUK_STRIDX_JSON_EXT_FUNCTION2 145 /* '{_func:true}' */
-#define DUK_HEAP_STRING_JSON_EXT_FUNCTION2(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_JSON_EXT_FUNCTION2)
-#define DUK_HTHREAD_STRING_JSON_EXT_FUNCTION2(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_JSON_EXT_FUNCTION2)
-#define DUK_STRIDX_BREAK 146 /* 'break' */
-#define DUK_HEAP_STRING_BREAK(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_BREAK)
-#define DUK_HTHREAD_STRING_BREAK(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_BREAK)
-#define DUK_STRIDX_CASE 147 /* 'case' */
-#define DUK_HEAP_STRING_CASE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CASE)
-#define DUK_HTHREAD_STRING_CASE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CASE)
-#define DUK_STRIDX_CATCH 148 /* 'catch' */
-#define DUK_HEAP_STRING_CATCH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CATCH)
-#define DUK_HTHREAD_STRING_CATCH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CATCH)
-#define DUK_STRIDX_CONTINUE 149 /* 'continue' */
-#define DUK_HEAP_STRING_CONTINUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONTINUE)
-#define DUK_HTHREAD_STRING_CONTINUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONTINUE)
-#define DUK_STRIDX_DEBUGGER 150 /* 'debugger' */
-#define DUK_HEAP_STRING_DEBUGGER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEBUGGER)
-#define DUK_HTHREAD_STRING_DEBUGGER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEBUGGER)
-#define DUK_STRIDX_DEFAULT 151 /* 'default' */
-#define DUK_HEAP_STRING_DEFAULT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DEFAULT)
-#define DUK_HTHREAD_STRING_DEFAULT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DEFAULT)
-#define DUK_STRIDX_DELETE 152 /* 'delete' */
-#define DUK_HEAP_STRING_DELETE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DELETE)
-#define DUK_HTHREAD_STRING_DELETE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DELETE)
-#define DUK_STRIDX_DO 153 /* 'do' */
-#define DUK_HEAP_STRING_DO(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_DO)
-#define DUK_HTHREAD_STRING_DO(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_DO)
-#define DUK_STRIDX_ELSE 154 /* 'else' */
-#define DUK_HEAP_STRING_ELSE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ELSE)
-#define DUK_HTHREAD_STRING_ELSE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ELSE)
-#define DUK_STRIDX_FINALLY 155 /* 'finally' */
-#define DUK_HEAP_STRING_FINALLY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FINALLY)
-#define DUK_HTHREAD_STRING_FINALLY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FINALLY)
-#define DUK_STRIDX_FOR 156 /* 'for' */
-#define DUK_HEAP_STRING_FOR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FOR)
-#define DUK_HTHREAD_STRING_FOR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FOR)
-#define DUK_STRIDX_LC_FUNCTION 157 /* 'function' */
-#define DUK_HEAP_STRING_LC_FUNCTION(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_FUNCTION)
-#define DUK_HTHREAD_STRING_LC_FUNCTION(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_FUNCTION)
-#define DUK_STRIDX_IF 158 /* 'if' */
-#define DUK_HEAP_STRING_IF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IF)
-#define DUK_HTHREAD_STRING_IF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IF)
-#define DUK_STRIDX_IN 159 /* 'in' */
-#define DUK_HEAP_STRING_IN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IN)
-#define DUK_HTHREAD_STRING_IN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IN)
-#define DUK_STRIDX_INSTANCEOF 160 /* 'instanceof' */
-#define DUK_HEAP_STRING_INSTANCEOF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INSTANCEOF)
-#define DUK_HTHREAD_STRING_INSTANCEOF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INSTANCEOF)
-#define DUK_STRIDX_NEW 161 /* 'new' */
-#define DUK_HEAP_STRING_NEW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_NEW)
-#define DUK_HTHREAD_STRING_NEW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_NEW)
-#define DUK_STRIDX_RETURN 162 /* 'return' */
-#define DUK_HEAP_STRING_RETURN(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_RETURN)
-#define DUK_HTHREAD_STRING_RETURN(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_RETURN)
-#define DUK_STRIDX_SWITCH 163 /* 'switch' */
-#define DUK_HEAP_STRING_SWITCH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SWITCH)
-#define DUK_HTHREAD_STRING_SWITCH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SWITCH)
-#define DUK_STRIDX_THIS 164 /* 'this' */
-#define DUK_HEAP_STRING_THIS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_THIS)
-#define DUK_HTHREAD_STRING_THIS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_THIS)
-#define DUK_STRIDX_THROW 165 /* 'throw' */
-#define DUK_HEAP_STRING_THROW(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_THROW)
-#define DUK_HTHREAD_STRING_THROW(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_THROW)
-#define DUK_STRIDX_TRY 166 /* 'try' */
-#define DUK_HEAP_STRING_TRY(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TRY)
-#define DUK_HTHREAD_STRING_TRY(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TRY)
-#define DUK_STRIDX_TYPEOF 167 /* 'typeof' */
-#define DUK_HEAP_STRING_TYPEOF(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TYPEOF)
-#define DUK_HTHREAD_STRING_TYPEOF(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TYPEOF)
-#define DUK_STRIDX_VAR 168 /* 'var' */
-#define DUK_HEAP_STRING_VAR(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VAR)
-#define DUK_HTHREAD_STRING_VAR(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VAR)
-#define DUK_STRIDX_CONST 169 /* 'const' */
-#define DUK_HEAP_STRING_CONST(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CONST)
-#define DUK_HTHREAD_STRING_CONST(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CONST)
-#define DUK_STRIDX_VOID 170 /* 'void' */
-#define DUK_HEAP_STRING_VOID(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_VOID)
-#define DUK_HTHREAD_STRING_VOID(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_VOID)
-#define DUK_STRIDX_WHILE 171 /* 'while' */
-#define DUK_HEAP_STRING_WHILE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WHILE)
-#define DUK_HTHREAD_STRING_WHILE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WHILE)
-#define DUK_STRIDX_WITH 172 /* 'with' */
-#define DUK_HEAP_STRING_WITH(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_WITH)
-#define DUK_HTHREAD_STRING_WITH(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_WITH)
-#define DUK_STRIDX_CLASS 173 /* 'class' */
-#define DUK_HEAP_STRING_CLASS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_CLASS)
-#define DUK_HTHREAD_STRING_CLASS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_CLASS)
-#define DUK_STRIDX_ENUM 174 /* 'enum' */
-#define DUK_HEAP_STRING_ENUM(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_ENUM)
-#define DUK_HTHREAD_STRING_ENUM(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_ENUM)
-#define DUK_STRIDX_EXPORT 175 /* 'export' */
-#define DUK_HEAP_STRING_EXPORT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EXPORT)
-#define DUK_HTHREAD_STRING_EXPORT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EXPORT)
-#define DUK_STRIDX_EXTENDS 176 /* 'extends' */
-#define DUK_HEAP_STRING_EXTENDS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_EXTENDS)
-#define DUK_HTHREAD_STRING_EXTENDS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_EXTENDS)
-#define DUK_STRIDX_IMPORT 177 /* 'import' */
-#define DUK_HEAP_STRING_IMPORT(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IMPORT)
-#define DUK_HTHREAD_STRING_IMPORT(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IMPORT)
-#define DUK_STRIDX_SUPER 178 /* 'super' */
-#define DUK_HEAP_STRING_SUPER(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_SUPER)
-#define DUK_HTHREAD_STRING_SUPER(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_SUPER)
-#define DUK_STRIDX_LC_NULL 179 /* 'null' */
-#define DUK_HEAP_STRING_LC_NULL(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LC_NULL)
-#define DUK_HTHREAD_STRING_LC_NULL(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LC_NULL)
-#define DUK_STRIDX_TRUE 180 /* 'true' */
-#define DUK_HEAP_STRING_TRUE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_TRUE)
-#define DUK_HTHREAD_STRING_TRUE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_TRUE)
-#define DUK_STRIDX_FALSE 181 /* 'false' */
-#define DUK_HEAP_STRING_FALSE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_FALSE)
-#define DUK_HTHREAD_STRING_FALSE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_FALSE)
-#define DUK_STRIDX_IMPLEMENTS 182 /* 'implements' */
-#define DUK_HEAP_STRING_IMPLEMENTS(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_IMPLEMENTS)
-#define DUK_HTHREAD_STRING_IMPLEMENTS(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_IMPLEMENTS)
-#define DUK_STRIDX_INTERFACE 183 /* 'interface' */
-#define DUK_HEAP_STRING_INTERFACE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_INTERFACE)
-#define DUK_HTHREAD_STRING_INTERFACE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_INTERFACE)
-#define DUK_STRIDX_LET 184 /* 'let' */
-#define DUK_HEAP_STRING_LET(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_LET)
-#define DUK_HTHREAD_STRING_LET(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_LET)
-#define DUK_STRIDX_PACKAGE 185 /* 'package' */
-#define DUK_HEAP_STRING_PACKAGE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PACKAGE)
-#define DUK_HTHREAD_STRING_PACKAGE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PACKAGE)
-#define DUK_STRIDX_PRIVATE 186 /* 'private' */
-#define DUK_HEAP_STRING_PRIVATE(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PRIVATE)
-#define DUK_HTHREAD_STRING_PRIVATE(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PRIVATE)
-#define DUK_STRIDX_PROTECTED 187 /* 'protected' */
-#define DUK_HEAP_STRING_PROTECTED(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PROTECTED)
-#define DUK_HTHREAD_STRING_PROTECTED(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PROTECTED)
-#define DUK_STRIDX_PUBLIC 188 /* 'public' */
-#define DUK_HEAP_STRING_PUBLIC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_PUBLIC)
-#define DUK_HTHREAD_STRING_PUBLIC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_PUBLIC)
-#define DUK_STRIDX_STATIC 189 /* 'static' */
-#define DUK_HEAP_STRING_STATIC(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_STATIC)
-#define DUK_HTHREAD_STRING_STATIC(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_STATIC)
-#define DUK_STRIDX_YIELD 190 /* 'yield' */
-#define DUK_HEAP_STRING_YIELD(heap) DUK_HEAP_GET_STRING((heap),DUK_STRIDX_YIELD)
-#define DUK_HTHREAD_STRING_YIELD(thr) DUK_HTHREAD_GET_STRING((thr),DUK_STRIDX_YIELD)
-
-#define DUK_HEAP_NUM_STRINGS 191
-#define DUK_STRIDX_START_RESERVED 146
-#define DUK_STRIDX_START_STRICT_RESERVED 182
-#define DUK_STRIDX_END_RESERVED 191 /* exclusive endpoint */
-
-/* To convert a heap stridx to a token number, subtract
- * DUK_STRIDX_START_RESERVED and add DUK_TOK_START_RESERVED.
- */
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_strings_data[1049];
-#endif /* !DUK_SINGLE_FILE */
-#define DUK_STRDATA_MAX_STRLEN 17
-#define DUK_STRDATA_DATA_LENGTH 1049
-#endif /* DUK_USE_ROM_STRINGS */
-
-#if defined(DUK_USE_ROM_OBJECTS)
-#error ROM support not enabled, rerun make_dist.py with --rom-support
-#else
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_boolean_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_constructor_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_type_error_thrower(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_proxy_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_pointer_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_logger_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_eval(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_parse_int(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_parse_float(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_is_nan(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_is_finite(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_decode_uri(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_decode_uri_component(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_encode_uri(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_encode_uri_component(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_escape(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_unescape(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_global_object_require(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_getprototype_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_setprototype_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_get_own_property_descriptor(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_keys_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_create(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_define_property(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_define_properties(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_seal_freeze_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_prevent_extensions(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_is_sealed_frozen_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_constructor_is_extensible(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_value_of(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_has_own_property(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_is_prototype_of(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_object_prototype_property_is_enumerable(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_apply(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_call(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_function_prototype_bind(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_constructor_is_array(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_join_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_concat(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_pop(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_push(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_reverse(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_shift(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_slice(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_sort(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_splice(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_unshift(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_indexof_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_iter_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_array_prototype_reduce_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_constructor_from_char_code(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_char_at(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_char_code_at(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_concat(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_indexof_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_locale_compare(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_match(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_replace(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_search(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_slice(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_split(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_substring(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_caseconv_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_trim(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_string_prototype_substr(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_boolean_prototype_tostring_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_locale_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_value_of(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_fixed(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_exponential(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_number_prototype_to_precision(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_parse(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_utc(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_constructor_now(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_tostring_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_to_json(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_value_of(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_get_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_get_timezone_offset(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_set_time(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_date_prototype_set_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_exec(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_test(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_regexp_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_stack_getter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_stack_setter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_filename_getter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_filename_setter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_linenumber_setter(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_error_prototype_to_string(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_onearg_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_twoarg_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_max(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_min(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_math_object_random(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_json_object_parse(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_json_object_stringify(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_gc(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_fin(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_enc(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_dec(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_yield(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_resume(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_thread_current(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_pointer_prototype_tostring_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_logger_prototype_fmt(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_logger_prototype_raw(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_logger_prototype_log_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_typedarray_set(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx);
-DUK_INTERNAL_DECL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx);
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_c_function duk_bi_native_functions[149];
-#endif /* !DUK_SINGLE_FILE */
-#if defined(DUK_USE_BUILTIN_INITJS)
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_initjs_data[187];
-#endif /* !DUK_SINGLE_FILE */
-#define DUK_BUILTIN_INITJS_DATA_LENGTH 187
-#endif /* DUK_USE_BUILTIN_INITJS */
-#define DUK_BIDX_GLOBAL 0
-#define DUK_BIDX_GLOBAL_ENV 1
-#define DUK_BIDX_OBJECT_CONSTRUCTOR 2
-#define DUK_BIDX_OBJECT_PROTOTYPE 3
-#define DUK_BIDX_FUNCTION_CONSTRUCTOR 4
-#define DUK_BIDX_FUNCTION_PROTOTYPE 5
-#define DUK_BIDX_ARRAY_CONSTRUCTOR 6
-#define DUK_BIDX_ARRAY_PROTOTYPE 7
-#define DUK_BIDX_STRING_CONSTRUCTOR 8
-#define DUK_BIDX_STRING_PROTOTYPE 9
-#define DUK_BIDX_BOOLEAN_CONSTRUCTOR 10
-#define DUK_BIDX_BOOLEAN_PROTOTYPE 11
-#define DUK_BIDX_NUMBER_CONSTRUCTOR 12
-#define DUK_BIDX_NUMBER_PROTOTYPE 13
-#define DUK_BIDX_DATE_CONSTRUCTOR 14
-#define DUK_BIDX_DATE_PROTOTYPE 15
-#define DUK_BIDX_REGEXP_CONSTRUCTOR 16
-#define DUK_BIDX_REGEXP_PROTOTYPE 17
-#define DUK_BIDX_ERROR_CONSTRUCTOR 18
-#define DUK_BIDX_ERROR_PROTOTYPE 19
-#define DUK_BIDX_EVAL_ERROR_CONSTRUCTOR 20
-#define DUK_BIDX_EVAL_ERROR_PROTOTYPE 21
-#define DUK_BIDX_RANGE_ERROR_CONSTRUCTOR 22
-#define DUK_BIDX_RANGE_ERROR_PROTOTYPE 23
-#define DUK_BIDX_REFERENCE_ERROR_CONSTRUCTOR 24
-#define DUK_BIDX_REFERENCE_ERROR_PROTOTYPE 25
-#define DUK_BIDX_SYNTAX_ERROR_CONSTRUCTOR 26
-#define DUK_BIDX_SYNTAX_ERROR_PROTOTYPE 27
-#define DUK_BIDX_TYPE_ERROR_CONSTRUCTOR 28
-#define DUK_BIDX_TYPE_ERROR_PROTOTYPE 29
-#define DUK_BIDX_URI_ERROR_CONSTRUCTOR 30
-#define DUK_BIDX_URI_ERROR_PROTOTYPE 31
-#define DUK_BIDX_MATH 32
-#define DUK_BIDX_JSON 33
-#define DUK_BIDX_TYPE_ERROR_THROWER 34
-#define DUK_BIDX_PROXY_CONSTRUCTOR 35
-#define DUK_BIDX_DUKTAPE 36
-#define DUK_BIDX_THREAD_CONSTRUCTOR 37
-#define DUK_BIDX_THREAD_PROTOTYPE 38
-#define DUK_BIDX_BUFFER_CONSTRUCTOR 39
-#define DUK_BIDX_BUFFER_PROTOTYPE 40
-#define DUK_BIDX_POINTER_CONSTRUCTOR 41
-#define DUK_BIDX_POINTER_PROTOTYPE 42
-#define DUK_BIDX_LOGGER_CONSTRUCTOR 43
-#define DUK_BIDX_LOGGER_PROTOTYPE 44
-#define DUK_BIDX_DOUBLE_ERROR 45
-#define DUK_BIDX_ARRAYBUFFER_CONSTRUCTOR 46
-#define DUK_BIDX_ARRAYBUFFER_PROTOTYPE 47
-#define DUK_BIDX_DATAVIEW_CONSTRUCTOR 48
-#define DUK_BIDX_DATAVIEW_PROTOTYPE 49
-#define DUK_BIDX_TYPEDARRAY_PROTOTYPE 50
-#define DUK_BIDX_INT8ARRAY_CONSTRUCTOR 51
-#define DUK_BIDX_INT8ARRAY_PROTOTYPE 52
-#define DUK_BIDX_UINT8ARRAY_CONSTRUCTOR 53
-#define DUK_BIDX_UINT8ARRAY_PROTOTYPE 54
-#define DUK_BIDX_UINT8CLAMPEDARRAY_CONSTRUCTOR 55
-#define DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE 56
-#define DUK_BIDX_INT16ARRAY_CONSTRUCTOR 57
-#define DUK_BIDX_INT16ARRAY_PROTOTYPE 58
-#define DUK_BIDX_UINT16ARRAY_CONSTRUCTOR 59
-#define DUK_BIDX_UINT16ARRAY_PROTOTYPE 60
-#define DUK_BIDX_INT32ARRAY_CONSTRUCTOR 61
-#define DUK_BIDX_INT32ARRAY_PROTOTYPE 62
-#define DUK_BIDX_UINT32ARRAY_CONSTRUCTOR 63
-#define DUK_BIDX_UINT32ARRAY_PROTOTYPE 64
-#define DUK_BIDX_FLOAT32ARRAY_CONSTRUCTOR 65
-#define DUK_BIDX_FLOAT32ARRAY_PROTOTYPE 66
-#define DUK_BIDX_FLOAT64ARRAY_CONSTRUCTOR 67
-#define DUK_BIDX_FLOAT64ARRAY_PROTOTYPE 68
-#define DUK_BIDX_NODEJS_BUFFER_CONSTRUCTOR 69
-#define DUK_BIDX_NODEJS_BUFFER_PROTOTYPE 70
-#define DUK_NUM_BUILTINS 71
-#define DUK_NUM_BIDX_BUILTINS 71
-#define DUK_NUM_ALL_BUILTINS 71
-#if defined(DUK_USE_DOUBLE_LE)
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[3833];
-#endif /* !DUK_SINGLE_FILE */
-#define DUK_BUILTINS_DATA_LENGTH 3833
-#elif defined(DUK_USE_DOUBLE_BE)
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[3833];
-#endif /* !DUK_SINGLE_FILE */
-#define DUK_BUILTINS_DATA_LENGTH 3833
-#elif defined(DUK_USE_DOUBLE_ME)
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_builtins_data[3833];
-#endif /* !DUK_SINGLE_FILE */
-#define DUK_BUILTINS_DATA_LENGTH 3833
-#else
-#error invalid endianness defines
-#endif
-#endif /* DUK_USE_ROM_OBJECTS */
-#endif /* DUK_BUILTINS_H_INCLUDED */
-#line 52 "duk_internal.h"
-
-#line 1 "duk_util.h"
-/*
- * Utilities
- */
-
-#ifndef DUK_UTIL_H_INCLUDED
-#define DUK_UTIL_H_INCLUDED
-
-#define DUK_UTIL_MIN_HASH_PRIME 17 /* must match genhashsizes.py */
-
-#define DUK_UTIL_GET_HASH_PROBE_STEP(hash) (duk_util_probe_steps[(hash) & 0x1f])
-
-/*
- * Endian conversion
- */
-
-#if defined(DUK_USE_INTEGER_LE)
-#define DUK_HTON32(x) DUK_BSWAP32((x))
-#define DUK_NTOH32(x) DUK_BSWAP32((x))
-#define DUK_HTON16(x) DUK_BSWAP16((x))
-#define DUK_NTOH16(x) DUK_BSWAP16((x))
-#elif defined(DUK_USE_INTEGER_BE)
-#define DUK_HTON32(x) (x)
-#define DUK_NTOH32(x) (x)
-#define DUK_HTON16(x) (x)
-#define DUK_NTOH16(x) (x)
-#else
-#error internal error, endianness defines broken
-#endif
-
-/*
- * Bitstream decoder
- */
-
-struct duk_bitdecoder_ctx {
- const duk_uint8_t *data;
- duk_size_t offset;
- duk_size_t length;
- duk_uint32_t currval;
- duk_small_int_t currbits;
-};
-
-/*
- * Bitstream encoder
- */
-
-struct duk_bitencoder_ctx {
- duk_uint8_t *data;
- duk_size_t offset;
- duk_size_t length;
- duk_uint32_t currval;
- duk_small_int_t currbits;
- duk_small_int_t truncated;
-};
-
-/*
- * Raw write/read macros for big endian, unaligned basic values.
- * Caller ensures there's enough space. The macros update the pointer
- * argument automatically on resizes. The idiom seems a bit odd, but
- * leads to compact code.
- */
-
-#define DUK_RAW_WRITE_U8(ptr,val) do { \
- *(ptr)++ = (duk_uint8_t) (val); \
- } while (0)
-#define DUK_RAW_WRITE_U16_BE(ptr,val) duk_raw_write_u16_be(&(ptr), (duk_uint16_t) (val))
-#define DUK_RAW_WRITE_U32_BE(ptr,val) duk_raw_write_u32_be(&(ptr), (duk_uint32_t) (val))
-#define DUK_RAW_WRITE_DOUBLE_BE(ptr,val) duk_raw_write_double_be(&(ptr), (duk_double_t) (val))
-#define DUK_RAW_WRITE_XUTF8(ptr,val) do { \
- /* 'ptr' is evaluated both as LHS and RHS. */ \
- duk_uint8_t *duk__ptr; \
- duk_small_int_t duk__len; \
- duk__ptr = (duk_uint8_t *) (ptr); \
- duk__len = duk_unicode_encode_xutf8((duk_ucodepoint_t) (val), duk__ptr); \
- duk__ptr += duk__len; \
- (ptr) = duk__ptr; \
- } while (0)
-#define DUK_RAW_WRITE_CESU8(ptr,val) do { \
- /* 'ptr' is evaluated both as LHS and RHS. */ \
- duk_uint8_t *duk__ptr; \
- duk_small_int_t duk__len; \
- duk__ptr = (duk_uint8_t *) (ptr); \
- duk__len = duk_unicode_encode_cesu8((duk_ucodepoint_t) (val), duk__ptr); \
- duk__ptr += duk__len; \
- (ptr) = duk__ptr; \
- } while (0)
-
-#define DUK_RAW_READ_U8(ptr) ((duk_uint8_t) (*(ptr)++))
-#define DUK_RAW_READ_U16_BE(ptr) duk_raw_read_u16_be(&(ptr));
-#define DUK_RAW_READ_U32_BE(ptr) duk_raw_read_u32_be(&(ptr));
-#define DUK_RAW_READ_DOUBLE_BE(ptr) duk_raw_read_double_be(&(ptr));
-
-/*
- * Buffer writer (dynamic buffer only)
- *
- * Helper for writing to a dynamic buffer with a concept of a "spare" area
- * to reduce resizes. You can ensure there is enough space beforehand and
- * then write for a while without further checks, relying on a stable data
- * pointer. Spare handling is automatic so call sites only indicate how
- * much data they need right now.
- *
- * There are several ways to write using bufwriter. The best approach
- * depends mainly on how much performance matters over code footprint.
- * The key issues are (1) ensuring there is space and (2) keeping the
- * pointers consistent. Fast code should ensure space for multiple writes
- * with one ensure call. Fastest inner loop code can temporarily borrow
- * the 'p' pointer but must write it back eventually.
- *
- * Be careful to ensure all macro arguments (other than static pointers like
- * 'thr' and 'bw_ctx') are evaluated exactly once, using temporaries if
- * necessary (if that's not possible, there should be a note near the macro).
- * Buffer write arguments often contain arithmetic etc so this is
- * particularly important here.
- */
-
-/* XXX: Migrate bufwriter and other read/write helpers to its own header? */
-
-struct duk_bufwriter_ctx {
- duk_uint8_t *p;
- duk_uint8_t *p_base;
- duk_uint8_t *p_limit;
- duk_hbuffer_dynamic *buf;
-};
-
-#define DUK_BW_SPARE_ADD 64
-#define DUK_BW_SPARE_SHIFT 4 /* 2^4 -> 1/16 = 6.25% spare */
-
-/* Initialization and finalization (compaction), converting to other types. */
-
-#define DUK_BW_INIT_PUSHBUF(thr,bw_ctx,sz) do { \
- duk_bw_init_pushbuf((thr), (bw_ctx), (sz)); \
- } while (0)
-#define DUK_BW_INIT_WITHBUF(thr,bw_ctx,buf) do { \
- duk_bw_init((thr), (bw_ctx), (buf)); \
- } while (0)
-#define DUK_BW_COMPACT(thr,bw_ctx) do { \
- /* Make underlying buffer compact to match DUK_BW_GET_SIZE(). */ \
- duk_bw_compact((thr), (bw_ctx)); \
- } while (0)
-#define DUK_BW_PUSH_AS_STRING(thr,bw_ctx) do { \
- duk_push_lstring((duk_context *) (thr), \
- (const char *) (bw_ctx)->p_base, \
- (duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base)); \
- } while (0)
-/* Pointers may be NULL for a while when 'buf' size is zero and before any
- * ENSURE calls have been made. Once an ENSURE has been made, the pointers
- * are required to be non-NULL so that it's always valid to use memcpy() and
- * memmove(), even for zero size.
- */
-#define DUK_BW_ASSERT_VALID_EXPR(thr,bw_ctx) \
- DUK_ASSERT_EXPR((bw_ctx) != NULL && \
- (bw_ctx)->buf != NULL && \
- ((DUK_HBUFFER_DYNAMIC_GET_SIZE((bw_ctx)->buf) == 0) || \
- ((bw_ctx)->p != NULL && \
- (bw_ctx)->p_base != NULL && \
- (bw_ctx)->p_limit != NULL && \
- (bw_ctx)->p_limit >= (bw_ctx)->p_base && \
- (bw_ctx)->p >= (bw_ctx)->p_base && \
- (bw_ctx)->p <= (bw_ctx)->p_limit)))
-#define DUK_BW_ASSERT_VALID(thr,bw_ctx) do { \
- DUK_BW_ASSERT_VALID_EXPR((thr), (bw_ctx)); \
- } while (0)
-
-/* Working with the pointer and current size. */
-
-#define DUK_BW_GET_PTR(thr,bw_ctx) \
- ((bw_ctx)->p)
-#define DUK_BW_SET_PTR(thr,bw_ctx,ptr) do { \
- (bw_ctx)->p = (ptr); \
- } while (0)
-#define DUK_BW_ADD_PTR(thr,bw_ctx,delta) do { \
- (bw_ctx)->p += (delta); \
- } while (0)
-#define DUK_BW_GET_BASEPTR(thr,bw_ctx) \
- ((bw_ctx)->p_base)
-#define DUK_BW_GET_LIMITPTR(thr,bw_ctx) \
- ((bw_ctx)->p_limit)
-#define DUK_BW_GET_SIZE(thr,bw_ctx) \
- ((duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base))
-#define DUK_BW_SET_SIZE(thr,bw_ctx,sz) do { \
- DUK_ASSERT((duk_size_t) (sz) <= (duk_size_t) ((bw_ctx)->p - (bw_ctx)->p_base)); \
- (bw_ctx)->p = (bw_ctx)->p_base + (sz); \
- } while (0)
-#define DUK_BW_RESET_SIZE(thr,bw_ctx) do { \
- /* Reset to zero size, keep current limit. */ \
- (bw_ctx)->p = (bw_ctx)->p_base; \
- } while (0)
-#define DUK_BW_GET_BUFFER(thr,bw_ctx) \
- ((bw_ctx)->buf)
-
-/* Ensuring (reserving) space. */
-
-#define DUK_BW_ENSURE(thr,bw_ctx,sz) do { \
- duk_size_t duk__sz, duk__space; \
- DUK_BW_ASSERT_VALID((thr), (bw_ctx)); \
- duk__sz = (sz); \
- duk__space = (duk_size_t) ((bw_ctx)->p_limit - (bw_ctx)->p); \
- if (duk__space < duk__sz) { \
- (void) duk_bw_resize((thr), (bw_ctx), duk__sz); \
- } \
- } while (0)
-/* NOTE: Multiple evaluation of 'ptr' in this macro. */
-/* XXX: Rework to use an always-inline function? */
-#define DUK_BW_ENSURE_RAW(thr,bw_ctx,sz,ptr) \
- (((duk_size_t) ((bw_ctx)->p_limit - (ptr)) >= (sz)) ? \
- (ptr) : \
- ((bw_ctx)->p = (ptr), duk_bw_resize((thr),(bw_ctx),(sz))))
-#define DUK_BW_ENSURE_GETPTR(thr,bw_ctx,sz) \
- DUK_BW_ENSURE_RAW((thr), (bw_ctx), (sz), (bw_ctx)->p)
-#define DUK_BW_ASSERT_SPACE_EXPR(thr,bw_ctx,sz) \
- (DUK_BW_ASSERT_VALID_EXPR((thr), (bw_ctx)), \
- DUK_ASSERT_EXPR((duk_size_t) ((bw_ctx)->p_limit - (bw_ctx)->p) >= (duk_size_t) (sz)))
-#define DUK_BW_ASSERT_SPACE(thr,bw_ctx,sz) do { \
- DUK_BW_ASSERT_SPACE_EXPR((thr), (bw_ctx), (sz)); \
- } while (0)
-
-/* Miscellaneous. */
-
-#define DUK_BW_SETPTR_AND_COMPACT(thr,bw_ctx,ptr) do { \
- (bw_ctx)->p = (ptr); \
- duk_bw_compact((thr), (bw_ctx)); \
- } while (0)
-
-/* Fast write calls which assume you control the spare beforehand.
- * Multibyte write variants exist and use a temporary write pointer
- * because byte writes alias with anything: with a stored pointer
- * explicit pointer load/stores get generated (e.g. gcc -Os).
- */
-
-#define DUK_BW_WRITE_RAW_U8(thr,bw_ctx,val) do { \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 1); \
- *(bw_ctx)->p++ = (duk_uint8_t) (val); \
- } while (0)
-#define DUK_BW_WRITE_RAW_U8_2(thr,bw_ctx,val1,val2) do { \
- duk_uint8_t *duk__p; \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 2); \
- duk__p = (bw_ctx)->p; \
- *duk__p++ = (duk_uint8_t) (val1); \
- *duk__p++ = (duk_uint8_t) (val2); \
- (bw_ctx)->p = duk__p; \
- } while (0)
-#define DUK_BW_WRITE_RAW_U8_3(thr,bw_ctx,val1,val2,val3) do { \
- duk_uint8_t *duk__p; \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 3); \
- duk__p = (bw_ctx)->p; \
- *duk__p++ = (duk_uint8_t) (val1); \
- *duk__p++ = (duk_uint8_t) (val2); \
- *duk__p++ = (duk_uint8_t) (val3); \
- (bw_ctx)->p = duk__p; \
- } while (0)
-#define DUK_BW_WRITE_RAW_U8_4(thr,bw_ctx,val1,val2,val3,val4) do { \
- duk_uint8_t *duk__p; \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 4); \
- duk__p = (bw_ctx)->p; \
- *duk__p++ = (duk_uint8_t) (val1); \
- *duk__p++ = (duk_uint8_t) (val2); \
- *duk__p++ = (duk_uint8_t) (val3); \
- *duk__p++ = (duk_uint8_t) (val4); \
- (bw_ctx)->p = duk__p; \
- } while (0)
-#define DUK_BW_WRITE_RAW_U8_5(thr,bw_ctx,val1,val2,val3,val4,val5) do { \
- duk_uint8_t *duk__p; \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 5); \
- duk__p = (bw_ctx)->p; \
- *duk__p++ = (duk_uint8_t) (val1); \
- *duk__p++ = (duk_uint8_t) (val2); \
- *duk__p++ = (duk_uint8_t) (val3); \
- *duk__p++ = (duk_uint8_t) (val4); \
- *duk__p++ = (duk_uint8_t) (val5); \
- (bw_ctx)->p = duk__p; \
- } while (0)
-#define DUK_BW_WRITE_RAW_U8_6(thr,bw_ctx,val1,val2,val3,val4,val5,val6) do { \
- duk_uint8_t *duk__p; \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), 6); \
- duk__p = (bw_ctx)->p; \
- *duk__p++ = (duk_uint8_t) (val1); \
- *duk__p++ = (duk_uint8_t) (val2); \
- *duk__p++ = (duk_uint8_t) (val3); \
- *duk__p++ = (duk_uint8_t) (val4); \
- *duk__p++ = (duk_uint8_t) (val5); \
- *duk__p++ = (duk_uint8_t) (val6); \
- (bw_ctx)->p = duk__p; \
- } while (0)
-#define DUK_BW_WRITE_RAW_XUTF8(thr,bw_ctx,cp) do { \
- duk_ucodepoint_t duk__cp; \
- duk_small_int_t duk__enc_len; \
- duk__cp = (cp); \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), duk_unicode_get_xutf8_length(duk__cp)); \
- duk__enc_len = duk_unicode_encode_xutf8(duk__cp, (bw_ctx)->p); \
- (bw_ctx)->p += duk__enc_len; \
- } while (0)
-#define DUK_BW_WRITE_RAW_CESU8(thr,bw_ctx,cp) do { \
- duk_ucodepoint_t duk__cp; \
- duk_small_int_t duk__enc_len; \
- duk__cp = (duk_ucodepoint_t) (cp); \
- DUK_BW_ASSERT_SPACE((thr), (bw_ctx), duk_unicode_get_cesu8_length(duk__cp)); \
- duk__enc_len = duk_unicode_encode_cesu8(duk__cp, (bw_ctx)->p); \
- (bw_ctx)->p += duk__enc_len; \
- } while (0)
-/* XXX: add temporary duk__p pointer here too; sharing */
-#define DUK_BW_WRITE_RAW_BYTES(thr,bw_ctx,valptr,valsz) do { \
- const void *duk__valptr; \
- duk_size_t duk__valsz; \
- duk__valptr = (const void *) (valptr); \
- duk__valsz = (duk_size_t) (valsz); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), duk__valptr, duk__valsz); \
- (bw_ctx)->p += duk__valsz; \
- } while (0)
-#define DUK_BW_WRITE_RAW_CSTRING(thr,bw_ctx,val) do { \
- const duk_uint8_t *duk__val; \
- duk_size_t duk__val_len; \
- duk__val = (const duk_uint8_t *) (val); \
- duk__val_len = DUK_STRLEN((const char *) duk__val); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) duk__val, duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_RAW_HSTRING(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HSTRING_GET_BYTELEN((val)); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HSTRING_GET_DATA((val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_RAW_HBUFFER(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_GET_SIZE((val)); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_RAW_HBUFFER_FIXED(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_FIXED_GET_SIZE((val)); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_FIXED_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_RAW_HBUFFER_DYNAMIC(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_DYNAMIC_GET_SIZE((val)); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-
-/* Append bytes from a slice already in the buffer. */
-#define DUK_BW_WRITE_RAW_SLICE(thr,bw,dst_off,dst_len) \
- duk_bw_write_raw_slice((thr), (bw), (dst_off), (dst_len))
-
-/* Insert bytes in the middle of the buffer from an external buffer. */
-#define DUK_BW_INSERT_RAW_BYTES(thr,bw,dst_off,buf,len) \
- duk_bw_insert_raw_bytes((thr), (bw), (dst_off), (buf), (len))
-
-/* Insert bytes in the middle of the buffer from a slice already
- * in the buffer. Source offset is interpreted "before" the operation.
- */
-#define DUK_BW_INSERT_RAW_SLICE(thr,bw,dst_off,src_off,len) \
- duk_bw_insert_raw_slice((thr), (bw), (dst_off), (src_off), (len))
-
-/* Insert a reserved area somewhere in the buffer; caller fills it.
- * Evaluates to a (duk_uint_t *) pointing to the start of the reserved
- * area for convenience.
- */
-#define DUK_BW_INSERT_RAW_AREA(thr,bw,off,len) \
- duk_bw_insert_raw_area((thr), (bw), (off), (len))
-
-/* Remove a slice from inside buffer. */
-#define DUK_BW_REMOVE_RAW_SLICE(thr,bw,off,len) \
- duk_bw_remove_raw_slice((thr), (bw), (off), (len))
-
-/* Safe write calls which will ensure space first. */
-
-#define DUK_BW_WRITE_ENSURE_U8(thr,bw_ctx,val) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 1); \
- DUK_BW_WRITE_RAW_U8((thr), (bw_ctx), (val)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_U8_2(thr,bw_ctx,val1,val2) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 2); \
- DUK_BW_WRITE_RAW_U8_2((thr), (bw_ctx), (val1), (val2)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_U8_3(thr,bw_ctx,val1,val2,val3) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 3); \
- DUK_BW_WRITE_RAW_U8_3((thr), (bw_ctx), (val1), (val2), (val3)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_U8_4(thr,bw_ctx,val1,val2,val3,val4) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 4); \
- DUK_BW_WRITE_RAW_U8_4((thr), (bw_ctx), (val1), (val2), (val3), (val4)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_U8_5(thr,bw_ctx,val1,val2,val3,val4,val5) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 5); \
- DUK_BW_WRITE_RAW_U8_5((thr), (bw_ctx), (val1), (val2), (val3), (val4), (val5)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_U8_6(thr,bw_ctx,val1,val2,val3,val4,val5,val6) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), 6); \
- DUK_BW_WRITE_RAW_U8_6((thr), (bw_ctx), (val1), (val2), (val3), (val4), (val5), (val6)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_XUTF8(thr,bw_ctx,cp) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), DUK_UNICODE_MAX_XUTF8_LENGTH); \
- DUK_BW_WRITE_RAW_XUTF8((thr), (bw_ctx), (cp)); \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_CESU8(thr,bw_ctx,cp) do { \
- DUK_BW_ENSURE((thr), (bw_ctx), DUK_UNICODE_MAX_CESU8_LENGTH); \
- DUK_BW_WRITE_RAW_CESU8((thr), (bw_ctx), (cp)); \
- } while (0)
-/* XXX: add temporary duk__p pointer here too; sharing */
-#define DUK_BW_WRITE_ENSURE_BYTES(thr,bw_ctx,valptr,valsz) do { \
- const void *duk__valptr; \
- duk_size_t duk__valsz; \
- duk__valptr = (const void *) (valptr); \
- duk__valsz = (duk_size_t) (valsz); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__valsz); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), duk__valptr, duk__valsz); \
- (bw_ctx)->p += duk__valsz; \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_CSTRING(thr,bw_ctx,val) do { \
- const duk_uint8_t *duk__val; \
- duk_size_t duk__val_len; \
- duk__val = (const duk_uint8_t *) (val); \
- duk__val_len = DUK_STRLEN((const char *) duk__val); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) duk__val, duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_HSTRING(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HSTRING_GET_BYTELEN((val)); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HSTRING_GET_DATA((val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_HBUFFER(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_GET_SIZE((val)); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_HBUFFER_FIXED(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_FIXED_GET_SIZE((val)); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_FIXED_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-#define DUK_BW_WRITE_ENSURE_HBUFFER_DYNAMIC(thr,bw_ctx,val) do { \
- duk_size_t duk__val_len; \
- duk__val_len = DUK_HBUFFER_DYNAMIC_GET_SIZE((val)); \
- DUK_BW_ENSURE((thr), (bw_ctx), duk__val_len); \
- DUK_MEMCPY((void *) ((bw_ctx)->p), (const void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((thr)->heap, (val)), duk__val_len); \
- (bw_ctx)->p += duk__val_len; \
- } while (0)
-
-#define DUK_BW_WRITE_ENSURE_SLICE(thr,bw,dst_off,dst_len) \
- duk_bw_write_ensure_slice((thr), (bw), (dst_off), (dst_len))
-#define DUK_BW_INSERT_ENSURE_BYTES(thr,bw,dst_off,buf,len) \
- duk_bw_insert_ensure_bytes((thr), (bw), (dst_off), (buf), (len))
-#define DUK_BW_INSERT_ENSURE_SLICE(thr,bw,dst_off,src_off,len) \
- duk_bw_insert_ensure_slice((thr), (bw), (dst_off), (src_off), (len))
-#define DUK_BW_INSERT_ENSURE_AREA(thr,bw,off,len) \
- /* Evaluates to (duk_uint8_t *) pointing to start of area. */ \
- duk_bw_insert_ensure_area((thr), (bw), (off), (len))
-#define DUK_BW_REMOVE_ENSURE_SLICE(thr,bw,off,len) \
- /* No difference between raw/ensure because the buffer shrinks. */ \
- DUK_BW_REMOVE_RAW_SLICE((thr), (bw), (off), (len))
-
-/*
- * Externs and prototypes
- */
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_lc_digits[36];
-DUK_INTERNAL_DECL const duk_uint8_t duk_uc_nybbles[16];
-DUK_INTERNAL_DECL const duk_int8_t duk_hex_dectab[256];
-#if defined(DUK_USE_HEX_FASTPATH)
-DUK_INTERNAL_DECL const duk_int16_t duk_hex_dectab_shift4[256];
-DUK_INTERNAL_DECL const duk_uint16_t duk_hex_enctab[256];
-#endif
-#if defined(DUK_USE_BASE64_FASTPATH)
-DUK_INTERNAL_DECL const duk_uint8_t duk_base64_enctab[64];
-DUK_INTERNAL_DECL const duk_int8_t duk_base64_dectab[256];
-#endif
-#endif /* !DUK_SINGLE_FILE */
-
-/* Note: assumes that duk_util_probe_steps size is 32 */
-#if defined(DUK_USE_HOBJECT_HASH_PART) || defined(DUK_USE_STRTAB_PROBE)
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL duk_uint8_t duk_util_probe_steps[32];
-#endif /* !DUK_SINGLE_FILE */
-#endif
-
-#if defined(DUK_USE_STRHASH_DENSE)
-DUK_INTERNAL_DECL duk_uint32_t duk_util_hashbytes(const duk_uint8_t *data, duk_size_t len, duk_uint32_t seed);
-#endif
-
-#if defined(DUK_USE_HOBJECT_HASH_PART) || defined(DUK_USE_STRTAB_PROBE)
-DUK_INTERNAL_DECL duk_uint32_t duk_util_get_hash_prime(duk_uint32_t size);
-#endif
-
-DUK_INTERNAL_DECL duk_int32_t duk_bd_decode(duk_bitdecoder_ctx *ctx, duk_small_int_t bits);
-DUK_INTERNAL_DECL duk_small_int_t duk_bd_decode_flag(duk_bitdecoder_ctx *ctx);
-DUK_INTERNAL_DECL duk_int32_t duk_bd_decode_flagged(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_int32_t def_value);
-
-DUK_INTERNAL_DECL void duk_be_encode(duk_bitencoder_ctx *ctx, duk_uint32_t data, duk_small_int_t bits);
-DUK_INTERNAL_DECL void duk_be_finish(duk_bitencoder_ctx *ctx);
-
-DUK_INTERNAL_DECL duk_uint32_t duk_util_tinyrandom_get_bits(duk_hthread *thr, duk_small_int_t n);
-DUK_INTERNAL_DECL duk_double_t duk_util_tinyrandom_get_double(duk_hthread *thr);
-
-DUK_INTERNAL_DECL void duk_bw_init(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_hbuffer_dynamic *h_buf);
-DUK_INTERNAL_DECL void duk_bw_init_pushbuf(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t buf_size);
-DUK_INTERNAL_DECL duk_uint8_t *duk_bw_resize(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t sz);
-DUK_INTERNAL_DECL void duk_bw_compact(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx);
-DUK_INTERNAL_DECL void duk_bw_write_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_write_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_insert_raw_bytes(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, const duk_uint8_t *buf, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_insert_ensure_bytes(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, const duk_uint8_t *buf, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_insert_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, duk_size_t src_off, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_insert_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, duk_size_t src_off, duk_size_t len);
-DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_raw_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len);
-DUK_INTERNAL_DECL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len);
-DUK_INTERNAL_DECL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len);
-/* No duk_bw_remove_ensure_slice(), functionality would be identical. */
-
-DUK_INTERNAL_DECL DUK_INLINE duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p);
-DUK_INTERNAL_DECL DUK_INLINE duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p);
-DUK_INTERNAL_DECL DUK_INLINE duk_double_t duk_raw_read_double_be(duk_uint8_t **p);
-DUK_INTERNAL_DECL DUK_INLINE void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val);
-DUK_INTERNAL_DECL DUK_INLINE void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val);
-DUK_INTERNAL_DECL DUK_INLINE void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val);
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */
-DUK_INTERNAL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len);
-#endif
-
-#endif /* DUK_UTIL_H_INCLUDED */
-#line 1 "duk_strings.h"
-/*
- * Shared error messages: declarations and macros
- *
- * Error messages are accessed through macros with fine-grained, explicit
- * error message distinctions. Concrete error messages are selected by the
- * macros and multiple macros can map to the same concrete string to save
- * on code footprint. This allows flexible footprint/verbosity tuning with
- * minimal code impact. There are a few limitations to this approach:
- * (1) switching between plain messages and format strings doesn't work
- * conveniently, and (2) conditional strings are a bit awkward to handle.
- *
- * Because format strings behave differently in the call site (they need to
- * be followed by format arguments), they have a special prefix (DUK_STR_FMT_
- * and duk_str_fmt_).
- *
- * On some compilers using explicit shared strings is preferable; on others
- * it may be better to use straight literals because the compiler will combine
- * them anyway, and such strings won't end up unnecessarily in a symbol table.
- */
-
-#ifndef DUK_ERRMSG_H_INCLUDED
-#define DUK_ERRMSG_H_INCLUDED
-
-#define DUK_STR_INTERNAL_ERROR duk_str_internal_error
-#define DUK_STR_INVALID_COUNT duk_str_invalid_count
-#define DUK_STR_INVALID_CALL_ARGS duk_str_invalid_call_args
-#define DUK_STR_NOT_CONSTRUCTABLE duk_str_not_constructable
-#define DUK_STR_NOT_CALLABLE duk_str_not_callable
-#define DUK_STR_NOT_EXTENSIBLE duk_str_not_extensible
-#define DUK_STR_NOT_WRITABLE duk_str_not_writable
-#define DUK_STR_NOT_CONFIGURABLE duk_str_not_configurable
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_internal_error;
-DUK_INTERNAL_DECL const char *duk_str_invalid_count;
-DUK_INTERNAL_DECL const char *duk_str_invalid_call_args;
-DUK_INTERNAL_DECL const char *duk_str_not_constructable;
-DUK_INTERNAL_DECL const char *duk_str_not_callable;
-DUK_INTERNAL_DECL const char *duk_str_not_extensible;
-DUK_INTERNAL_DECL const char *duk_str_not_writable;
-DUK_INTERNAL_DECL const char *duk_str_not_configurable;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_INVALID_CONTEXT duk_str_invalid_context
-#define DUK_STR_INVALID_INDEX duk_str_invalid_call_args
-#define DUK_STR_PUSH_BEYOND_ALLOC_STACK duk_str_push_beyond_alloc_stack
-#define DUK_STR_NOT_UNDEFINED duk_str_unexpected_type
-#define DUK_STR_NOT_NULL duk_str_unexpected_type
-#define DUK_STR_NOT_BOOLEAN duk_str_unexpected_type
-#define DUK_STR_NOT_NUMBER duk_str_unexpected_type
-#define DUK_STR_NOT_STRING duk_str_unexpected_type
-#define DUK_STR_NOT_OBJECT duk_str_unexpected_type
-#define DUK_STR_NOT_POINTER duk_str_unexpected_type
-#define DUK_STR_NOT_BUFFER duk_str_not_buffer /* still in use with verbose messages */
-#define DUK_STR_UNEXPECTED_TYPE duk_str_unexpected_type
-#define DUK_STR_NOT_THREAD duk_str_unexpected_type
-#define DUK_STR_NOT_COMPILEDFUNCTION duk_str_unexpected_type
-#define DUK_STR_NOT_NATIVEFUNCTION duk_str_unexpected_type
-#define DUK_STR_NOT_C_FUNCTION duk_str_unexpected_type
-#define DUK_STR_NOT_FUNCTION duk_str_unexpected_type
-#define DUK_STR_NOT_REGEXP duk_str_unexpected_type
-#define DUK_STR_DEFAULTVALUE_COERCE_FAILED duk_str_defaultvalue_coerce_failed
-#define DUK_STR_NUMBER_OUTSIDE_RANGE duk_str_number_outside_range
-#define DUK_STR_NOT_OBJECT_COERCIBLE duk_str_not_object_coercible
-#define DUK_STR_STRING_TOO_LONG duk_str_string_too_long
-#define DUK_STR_BUFFER_TOO_LONG duk_str_buffer_too_long
-#define DUK_STR_SPRINTF_TOO_LONG duk_str_sprintf_too_long
-#define DUK_STR_ALLOC_FAILED duk_str_alloc_failed
-#define DUK_STR_POP_TOO_MANY duk_str_pop_too_many
-#define DUK_STR_WRONG_BUFFER_TYPE duk_str_wrong_buffer_type
-#define DUK_STR_ENCODE_FAILED duk_str_encode_failed
-#define DUK_STR_DECODE_FAILED duk_str_decode_failed
-#define DUK_STR_NO_SOURCECODE duk_str_no_sourcecode
-#define DUK_STR_CONCAT_RESULT_TOO_LONG duk_str_concat_result_too_long
-#define DUK_STR_UNIMPLEMENTED duk_str_unimplemented
-#define DUK_STR_UNSUPPORTED duk_str_unsupported
-#define DUK_STR_ARRAY_LENGTH_OVER_2G duk_str_array_length_over_2g
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_invalid_context;
-DUK_INTERNAL_DECL const char *duk_str_push_beyond_alloc_stack;
-DUK_INTERNAL_DECL const char *duk_str_not_buffer;
-DUK_INTERNAL_DECL const char *duk_str_unexpected_type;
-DUK_INTERNAL_DECL const char *duk_str_defaultvalue_coerce_failed;
-DUK_INTERNAL_DECL const char *duk_str_number_outside_range;
-DUK_INTERNAL_DECL const char *duk_str_not_object_coercible;
-DUK_INTERNAL_DECL const char *duk_str_string_too_long;
-DUK_INTERNAL_DECL const char *duk_str_buffer_too_long;
-DUK_INTERNAL_DECL const char *duk_str_sprintf_too_long;
-DUK_INTERNAL_DECL const char *duk_str_alloc_failed;
-DUK_INTERNAL_DECL const char *duk_str_pop_too_many;
-DUK_INTERNAL_DECL const char *duk_str_wrong_buffer_type;
-DUK_INTERNAL_DECL const char *duk_str_encode_failed;
-DUK_INTERNAL_DECL const char *duk_str_decode_failed;
-DUK_INTERNAL_DECL const char *duk_str_no_sourcecode;
-DUK_INTERNAL_DECL const char *duk_str_concat_result_too_long;
-DUK_INTERNAL_DECL const char *duk_str_unimplemented;
-DUK_INTERNAL_DECL const char *duk_str_unsupported;
-DUK_INTERNAL_DECL const char *duk_str_array_length_over_2g;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_FMT_PTR duk_str_fmt_ptr
-#define DUK_STR_FMT_INVALID_JSON duk_str_fmt_invalid_json
-#define DUK_STR_JSONDEC_RECLIMIT duk_str_jsondec_reclimit
-#define DUK_STR_JSONENC_RECLIMIT duk_str_jsonenc_reclimit
-#define DUK_STR_CYCLIC_INPUT duk_str_cyclic_input
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_fmt_ptr;
-DUK_INTERNAL_DECL const char *duk_str_fmt_invalid_json;
-DUK_INTERNAL_DECL const char *duk_str_jsondec_reclimit;
-DUK_INTERNAL_DECL const char *duk_str_jsonenc_reclimit;
-DUK_INTERNAL_DECL const char *duk_str_cyclic_input;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_PROXY_REVOKED duk_str_proxy_revoked
-#define DUK_STR_INVALID_BASE duk_str_invalid_base
-#define DUK_STR_STRICT_CALLER_READ duk_str_strict_caller_read
-#define DUK_STR_PROXY_REJECTED duk_str_proxy_rejected
-#define DUK_STR_INVALID_ARRAY_LENGTH duk_str_invalid_array_length
-#define DUK_STR_ARRAY_LENGTH_WRITE_FAILED duk_str_array_length_write_failed
-#define DUK_STR_ARRAY_LENGTH_NOT_WRITABLE duk_str_array_length_not_writable
-#define DUK_STR_SETTER_UNDEFINED duk_str_setter_undefined
-#define DUK_STR_REDEFINE_VIRT_PROP duk_str_redefine_virt_prop
-#define DUK_STR_INVALID_DESCRIPTOR duk_str_invalid_descriptor
-#define DUK_STR_PROPERTY_IS_VIRTUAL duk_str_property_is_virtual
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_proxy_revoked;
-DUK_INTERNAL_DECL const char *duk_str_invalid_base;
-DUK_INTERNAL_DECL const char *duk_str_strict_caller_read;
-DUK_INTERNAL_DECL const char *duk_str_proxy_rejected;
-DUK_INTERNAL_DECL const char *duk_str_invalid_array_length;
-DUK_INTERNAL_DECL const char *duk_str_array_length_write_failed;
-DUK_INTERNAL_DECL const char *duk_str_array_length_not_writable;
-DUK_INTERNAL_DECL const char *duk_str_setter_undefined;
-DUK_INTERNAL_DECL const char *duk_str_redefine_virt_prop;
-DUK_INTERNAL_DECL const char *duk_str_invalid_descriptor;
-DUK_INTERNAL_DECL const char *duk_str_property_is_virtual;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_PARSE_ERROR duk_str_parse_error
-#define DUK_STR_DUPLICATE_LABEL duk_str_duplicate_label
-#define DUK_STR_INVALID_LABEL duk_str_invalid_label
-#define DUK_STR_INVALID_ARRAY_LITERAL duk_str_invalid_array_literal
-#define DUK_STR_INVALID_OBJECT_LITERAL duk_str_invalid_object_literal
-#define DUK_STR_INVALID_VAR_DECLARATION duk_str_invalid_var_declaration
-#define DUK_STR_CANNOT_DELETE_IDENTIFIER duk_str_cannot_delete_identifier
-#define DUK_STR_INVALID_EXPRESSION duk_str_invalid_expression
-#define DUK_STR_INVALID_LVALUE duk_str_invalid_lvalue
-#define DUK_STR_EXPECTED_IDENTIFIER duk_str_expected_identifier
-#define DUK_STR_EMPTY_EXPR_NOT_ALLOWED duk_str_empty_expr_not_allowed
-#define DUK_STR_INVALID_FOR duk_str_invalid_for
-#define DUK_STR_INVALID_SWITCH duk_str_invalid_switch
-#define DUK_STR_INVALID_BREAK_CONT_LABEL duk_str_invalid_break_cont_label
-#define DUK_STR_INVALID_RETURN duk_str_invalid_return
-#define DUK_STR_INVALID_TRY duk_str_invalid_try
-#define DUK_STR_INVALID_THROW duk_str_invalid_throw
-#define DUK_STR_WITH_IN_STRICT_MODE duk_str_with_in_strict_mode
-#define DUK_STR_FUNC_STMT_NOT_ALLOWED duk_str_func_stmt_not_allowed
-#define DUK_STR_UNTERMINATED_STMT duk_str_unterminated_stmt
-#define DUK_STR_INVALID_ARG_NAME duk_str_invalid_arg_name
-#define DUK_STR_INVALID_FUNC_NAME duk_str_invalid_func_name
-#define DUK_STR_INVALID_GETSET_NAME duk_str_invalid_getset_name
-#define DUK_STR_FUNC_NAME_REQUIRED duk_str_func_name_required
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_parse_error;
-DUK_INTERNAL_DECL const char *duk_str_duplicate_label;
-DUK_INTERNAL_DECL const char *duk_str_invalid_label;
-DUK_INTERNAL_DECL const char *duk_str_invalid_array_literal;
-DUK_INTERNAL_DECL const char *duk_str_invalid_object_literal;
-DUK_INTERNAL_DECL const char *duk_str_invalid_var_declaration;
-DUK_INTERNAL_DECL const char *duk_str_cannot_delete_identifier;
-DUK_INTERNAL_DECL const char *duk_str_invalid_expression;
-DUK_INTERNAL_DECL const char *duk_str_invalid_lvalue;
-DUK_INTERNAL_DECL const char *duk_str_expected_identifier;
-DUK_INTERNAL_DECL const char *duk_str_empty_expr_not_allowed;
-DUK_INTERNAL_DECL const char *duk_str_invalid_for;
-DUK_INTERNAL_DECL const char *duk_str_invalid_switch;
-DUK_INTERNAL_DECL const char *duk_str_invalid_break_cont_label;
-DUK_INTERNAL_DECL const char *duk_str_invalid_return;
-DUK_INTERNAL_DECL const char *duk_str_invalid_try;
-DUK_INTERNAL_DECL const char *duk_str_invalid_throw;
-DUK_INTERNAL_DECL const char *duk_str_with_in_strict_mode;
-DUK_INTERNAL_DECL const char *duk_str_func_stmt_not_allowed;
-DUK_INTERNAL_DECL const char *duk_str_unterminated_stmt;
-DUK_INTERNAL_DECL const char *duk_str_invalid_arg_name;
-DUK_INTERNAL_DECL const char *duk_str_invalid_func_name;
-DUK_INTERNAL_DECL const char *duk_str_invalid_getset_name;
-DUK_INTERNAL_DECL const char *duk_str_func_name_required;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_INVALID_QUANTIFIER_NO_ATOM duk_str_invalid_quantifier_no_atom
-#define DUK_STR_INVALID_QUANTIFIER_VALUES duk_str_invalid_quantifier_values
-#define DUK_STR_QUANTIFIER_TOO_MANY_COPIES duk_str_quantifier_too_many_copies
-#define DUK_STR_UNEXPECTED_CLOSING_PAREN duk_str_unexpected_closing_paren
-#define DUK_STR_UNEXPECTED_END_OF_PATTERN duk_str_unexpected_end_of_pattern
-#define DUK_STR_UNEXPECTED_REGEXP_TOKEN duk_str_unexpected_regexp_token
-#define DUK_STR_INVALID_REGEXP_FLAGS duk_str_invalid_regexp_flags
-#define DUK_STR_INVALID_BACKREFS duk_str_invalid_backrefs
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_invalid_quantifier_no_atom;
-DUK_INTERNAL_DECL const char *duk_str_invalid_quantifier_values;
-DUK_INTERNAL_DECL const char *duk_str_quantifier_too_many_copies;
-DUK_INTERNAL_DECL const char *duk_str_unexpected_closing_paren;
-DUK_INTERNAL_DECL const char *duk_str_unexpected_end_of_pattern;
-DUK_INTERNAL_DECL const char *duk_str_unexpected_regexp_token;
-DUK_INTERNAL_DECL const char *duk_str_invalid_regexp_flags;
-DUK_INTERNAL_DECL const char *duk_str_invalid_backrefs;
-#endif /* !DUK_SINGLE_FILE */
-
-#define DUK_STR_VALSTACK_LIMIT duk_str_valstack_limit
-#define DUK_STR_CALLSTACK_LIMIT duk_str_callstack_limit
-#define DUK_STR_CATCHSTACK_LIMIT duk_str_catchstack_limit
-#define DUK_STR_PROTOTYPE_CHAIN_LIMIT duk_str_prototype_chain_limit
-#define DUK_STR_BOUND_CHAIN_LIMIT duk_str_bound_chain_limit
-#define DUK_STR_C_CALLSTACK_LIMIT duk_str_c_callstack_limit
-#define DUK_STR_COMPILER_RECURSION_LIMIT duk_str_compiler_recursion_limit
-#define DUK_STR_BYTECODE_LIMIT duk_str_bytecode_limit
-#define DUK_STR_REG_LIMIT duk_str_reg_limit
-#define DUK_STR_TEMP_LIMIT duk_str_temp_limit
-#define DUK_STR_CONST_LIMIT duk_str_const_limit
-#define DUK_STR_FUNC_LIMIT duk_str_func_limit
-#define DUK_STR_REGEXP_COMPILER_RECURSION_LIMIT duk_str_regexp_compiler_recursion_limit
-#define DUK_STR_REGEXP_EXECUTOR_RECURSION_LIMIT duk_str_regexp_executor_recursion_limit
-#define DUK_STR_REGEXP_EXECUTOR_STEP_LIMIT duk_str_regexp_executor_step_limit
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_valstack_limit;
-DUK_INTERNAL_DECL const char *duk_str_callstack_limit;
-DUK_INTERNAL_DECL const char *duk_str_catchstack_limit;
-DUK_INTERNAL_DECL const char *duk_str_prototype_chain_limit;
-DUK_INTERNAL_DECL const char *duk_str_bound_chain_limit;
-DUK_INTERNAL_DECL const char *duk_str_c_callstack_limit;
-DUK_INTERNAL_DECL const char *duk_str_compiler_recursion_limit;
-DUK_INTERNAL_DECL const char *duk_str_bytecode_limit;
-DUK_INTERNAL_DECL const char *duk_str_reg_limit;
-DUK_INTERNAL_DECL const char *duk_str_temp_limit;
-DUK_INTERNAL_DECL const char *duk_str_const_limit;
-DUK_INTERNAL_DECL const char *duk_str_func_limit;
-DUK_INTERNAL_DECL const char *duk_str_regexp_compiler_recursion_limit;
-DUK_INTERNAL_DECL const char *duk_str_regexp_executor_recursion_limit;
-DUK_INTERNAL_DECL const char *duk_str_regexp_executor_step_limit;
-#endif /* !DUK_SINGLE_FILE */
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const char *duk_str_anon;
-#endif /* !DUK_SINGLE_FILE */
-
-#endif /* DUK_ERRMSG_H_INCLUDED */
-#line 1 "duk_js_bytecode.h"
-/*
- * Ecmascript bytecode
- */
-
-#ifndef DUK_JS_BYTECODE_H_INCLUDED
-#define DUK_JS_BYTECODE_H_INCLUDED
-
-/*
- * Logical instruction layout
- * ==========================
- *
- * !3!3!2!2!2!2!2!2!2!2!2!2!1!1!1!1!1!1!1!1!1!1! ! ! ! ! ! ! ! ! ! !
- * !1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0!9!8!7!6!5!4!3!2!1!0!
- * +---------------------------------------------------+-----------+
- * ! C ! B ! A ! OP !
- * +---------------------------------------------------+-----------+
- *
- * OP (6 bits): opcode (DUK_OP_*), access should be fastest
- * A (8 bits): typically a target register number
- * B (9 bits): typically first source register/constant number
- * C (9 bits): typically second source register/constant number
- *
- * Some instructions combine BC or ABC together for larger parameter values.
- * Signed integers (e.g. jump offsets) are encoded as unsigned, with an opcode
- * specific bias. B and C may denote a register or a constant, see
- * DUK_BC_ISREG() and DUK_BC_ISCONST().
- *
- * Note: macro naming is a bit misleading, e.g. "ABC" in macro name but
- * the field layout is logically "CBA".
- */
-
-typedef duk_uint32_t duk_instr_t;
-
-#define DUK_DEC_OP(x) ((x) & 0x3fUL)
-#define DUK_DEC_A(x) (((x) >> 6) & 0xffUL)
-#define DUK_DEC_B(x) (((x) >> 14) & 0x1ffUL)
-#define DUK_DEC_C(x) (((x) >> 23) & 0x1ffUL)
-#define DUK_DEC_BC(x) (((x) >> 14) & 0x3ffffUL)
-#define DUK_DEC_ABC(x) (((x) >> 6) & 0x3ffffffUL)
-
-#define DUK_ENC_OP(op) ((duk_instr_t) (op))
-#define DUK_ENC_OP_ABC(op,abc) ((duk_instr_t) ( \
- (((duk_instr_t) (abc)) << 6) | \
- ((duk_instr_t) (op)) \
- ))
-#define DUK_ENC_OP_A_BC(op,a,bc) ((duk_instr_t) ( \
- (((duk_instr_t) (bc)) << 14) | \
- (((duk_instr_t) (a)) << 6) | \
- ((duk_instr_t) (op)) \
- ))
-#define DUK_ENC_OP_A_B_C(op,a,b,c) ((duk_instr_t) ( \
- (((duk_instr_t) (c)) << 23) | \
- (((duk_instr_t) (b)) << 14) | \
- (((duk_instr_t) (a)) << 6) | \
- ((duk_instr_t) (op)) \
- ))
-#define DUK_ENC_OP_A_B(op,a,b) DUK_ENC_OP_A_B_C(op,a,b,0)
-#define DUK_ENC_OP_A(op,a) DUK_ENC_OP_A_B_C(op,a,0,0)
-
-/* Constants should be signed so that signed arithmetic involving them
- * won't cause values to be coerced accidentally to unsigned.
- */
-#define DUK_BC_OP_MIN 0
-#define DUK_BC_OP_MAX 0x3fL
-#define DUK_BC_A_MIN 0
-#define DUK_BC_A_MAX 0xffL
-#define DUK_BC_B_MIN 0
-#define DUK_BC_B_MAX 0x1ffL
-#define DUK_BC_C_MIN 0
-#define DUK_BC_C_MAX 0x1ffL
-#define DUK_BC_BC_MIN 0
-#define DUK_BC_BC_MAX 0x3ffffL
-#define DUK_BC_ABC_MIN 0
-#define DUK_BC_ABC_MAX 0x3ffffffL
-#define DUK_BC_EXTRAOP_MIN DUK_BC_A_MIN
-#define DUK_BC_EXTRAOP_MAX DUK_BC_A_MAX
-
-#define DUK_OP_LDREG 0
-#define DUK_OP_STREG 1
-#define DUK_OP_LDCONST 2
-#define DUK_OP_LDINT 3
-#define DUK_OP_LDINTX 4
-#define DUK_OP_MPUTOBJ 5
-#define DUK_OP_MPUTOBJI 6
-#define DUK_OP_MPUTARR 7
-#define DUK_OP_MPUTARRI 8
-#define DUK_OP_NEW 9
-#define DUK_OP_NEWI 10
-#define DUK_OP_REGEXP 11
-#define DUK_OP_CSREG 12
-#define DUK_OP_CSREGI 13
-#define DUK_OP_GETVAR 14
-#define DUK_OP_PUTVAR 15
-#define DUK_OP_DECLVAR 16
-#define DUK_OP_DELVAR 17
-#define DUK_OP_CSVAR 18
-#define DUK_OP_CSVARI 19
-#define DUK_OP_CLOSURE 20
-#define DUK_OP_GETPROP 21
-#define DUK_OP_PUTPROP 22
-#define DUK_OP_DELPROP 23
-#define DUK_OP_CSPROP 24
-#define DUK_OP_CSPROPI 25
-#define DUK_OP_ADD 26
-#define DUK_OP_SUB 27
-#define DUK_OP_MUL 28
-#define DUK_OP_DIV 29
-#define DUK_OP_MOD 30
-#define DUK_OP_BAND 31
-#define DUK_OP_BOR 32
-#define DUK_OP_BXOR 33
-#define DUK_OP_BASL 34
-#define DUK_OP_BLSR 35
-#define DUK_OP_BASR 36
-#define DUK_OP_EQ 37
-#define DUK_OP_NEQ 38
-#define DUK_OP_SEQ 39
-#define DUK_OP_SNEQ 40
-#define DUK_OP_GT 41
-#define DUK_OP_GE 42
-#define DUK_OP_LT 43
-#define DUK_OP_LE 44
-#define DUK_OP_IF 45
-#define DUK_OP_JUMP 46
-#define DUK_OP_RETURN 47
-#define DUK_OP_CALL 48
-#define DUK_OP_CALLI 49
-#define DUK_OP_TRYCATCH 50
-#define DUK_OP_EXTRA 51
-#define DUK_OP_PREINCR 52 /* pre/post opcode values have constraints, */
-#define DUK_OP_PREDECR 53 /* see duk_js_executor.c */
-#define DUK_OP_POSTINCR 54
-#define DUK_OP_POSTDECR 55
-#define DUK_OP_PREINCV 56
-#define DUK_OP_PREDECV 57
-#define DUK_OP_POSTINCV 58
-#define DUK_OP_POSTDECV 59
-#define DUK_OP_PREINCP 60
-#define DUK_OP_PREDECP 61
-#define DUK_OP_POSTINCP 62
-#define DUK_OP_POSTDECP 63
-#define DUK_OP_NONE 64 /* dummy value used as marker */
-
-/* DUK_OP_EXTRA, sub-operation in A */
-#define DUK_EXTRAOP_NOP 0
-#define DUK_EXTRAOP_INVALID 1
-#define DUK_EXTRAOP_LDTHIS 2
-#define DUK_EXTRAOP_LDUNDEF 3
-#define DUK_EXTRAOP_LDNULL 4
-#define DUK_EXTRAOP_LDTRUE 5
-#define DUK_EXTRAOP_LDFALSE 6
-#define DUK_EXTRAOP_NEWOBJ 7
-#define DUK_EXTRAOP_NEWARR 8
-#define DUK_EXTRAOP_SETALEN 9
-#define DUK_EXTRAOP_TYPEOF 10
-#define DUK_EXTRAOP_TYPEOFID 11
-#define DUK_EXTRAOP_INITENUM 12
-#define DUK_EXTRAOP_NEXTENUM 13
-#define DUK_EXTRAOP_INITSET 14
-#define DUK_EXTRAOP_INITSETI 15
-#define DUK_EXTRAOP_INITGET 16
-#define DUK_EXTRAOP_INITGETI 17
-#define DUK_EXTRAOP_ENDTRY 18
-#define DUK_EXTRAOP_ENDCATCH 19
-#define DUK_EXTRAOP_ENDFIN 20
-#define DUK_EXTRAOP_THROW 21
-#define DUK_EXTRAOP_INVLHS 22
-#define DUK_EXTRAOP_UNM 23
-#define DUK_EXTRAOP_UNP 24
-#define DUK_EXTRAOP_DEBUGGER 25
-#define DUK_EXTRAOP_BREAK 26
-#define DUK_EXTRAOP_CONTINUE 27
-#define DUK_EXTRAOP_BNOT 28
-#define DUK_EXTRAOP_LNOT 29
-#define DUK_EXTRAOP_INSTOF 30
-#define DUK_EXTRAOP_IN 31
-#define DUK_EXTRAOP_LABEL 32
-#define DUK_EXTRAOP_ENDLABEL 33
-
-/* DUK_OP_CALL flags in A */
-#define DUK_BC_CALL_FLAG_TAILCALL (1 << 0)
-#define DUK_BC_CALL_FLAG_EVALCALL (1 << 1)
-
-/* DUK_OP_TRYCATCH flags in A */
-#define DUK_BC_TRYCATCH_FLAG_HAVE_CATCH (1 << 0)
-#define DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY (1 << 1)
-#define DUK_BC_TRYCATCH_FLAG_CATCH_BINDING (1 << 2)
-#define DUK_BC_TRYCATCH_FLAG_WITH_BINDING (1 << 3)
-
-/* DUK_OP_RETURN flags in A */
-#define DUK_BC_RETURN_FLAG_HAVE_RETVAL (1 << 0)
-
-/* DUK_OP_DECLVAR flags in A; bottom bits are reserved for propdesc flags (DUK_PROPDESC_FLAG_XXX) */
-#define DUK_BC_DECLVAR_FLAG_UNDEF_VALUE (1 << 4) /* use 'undefined' for value automatically */
-#define DUK_BC_DECLVAR_FLAG_FUNC_DECL (1 << 5) /* function declaration */
-
-/* misc constants and helper macros */
-#define DUK_BC_REGLIMIT 256 /* if B/C is >= this value, refers to a const */
-#define DUK_BC_ISREG(x) ((x) < DUK_BC_REGLIMIT)
-#define DUK_BC_ISCONST(x) ((x) >= DUK_BC_REGLIMIT)
-#define DUK_BC_LDINT_BIAS (1L << 17)
-#define DUK_BC_LDINTX_SHIFT 18
-#define DUK_BC_JUMP_BIAS (1L << 25)
-
-#endif /* DUK_JS_BYTECODE_H_INCLUDED */
-#line 1 "duk_lexer.h"
-/*
- * Lexer defines.
- */
-
-#ifndef DUK_LEXER_H_INCLUDED
-#define DUK_LEXER_H_INCLUDED
-
-typedef void (*duk_re_range_callback)(void *user, duk_codepoint_t r1, duk_codepoint_t r2, duk_bool_t direct);
-
-/*
- * A token is interpreted as any possible production of InputElementDiv
- * and InputElementRegExp, see E5 Section 7 in its entirety. Note that
- * the E5 "Token" production does not cover all actual tokens of the
- * language (which is explicitly stated in the specification, Section 7.5).
- * Null and boolean literals are defined as part of both ReservedWord
- * (E5 Section 7.6.1) and Literal (E5 Section 7.8) productions. Here,
- * null and boolean values have literal tokens, and are not reserved
- * words.
- *
- * Decimal literal negative/positive sign is -not- part of DUK_TOK_NUMBER.
- * The number tokens always have a non-negative value. The unary minus
- * operator in "-1.0" is optimized during compilation to yield a single
- * negative constant.
- *
- * Token numbering is free except that reserved words are required to be
- * in a continuous range and in a particular order. See genstrings.py.
- */
-
-#define DUK_LEXER_INITCTX(ctx) duk_lexer_initctx((ctx))
-
-#define DUK_LEXER_SETPOINT(ctx,pt) duk_lexer_setpoint((ctx), (pt))
-
-#define DUK_LEXER_GETPOINT(ctx,pt) do { (pt)->offset = (ctx)->window[0].offset; \
- (pt)->line = (ctx)->window[0].line; } while (0)
-
-/* currently 6 characters of lookup are actually needed (duk_lexer.c) */
-#define DUK_LEXER_WINDOW_SIZE 6
-#if defined(DUK_USE_LEXER_SLIDING_WINDOW)
-#define DUK_LEXER_BUFFER_SIZE 64
-#endif
-
-#define DUK_TOK_MINVAL 0
-
-/* returned after EOF (infinite amount) */
-#define DUK_TOK_EOF 0
-
-/* identifier names (E5 Section 7.6) */
-#define DUK_TOK_IDENTIFIER 1
-
-/* reserved words: keywords */
-#define DUK_TOK_START_RESERVED 2
-#define DUK_TOK_BREAK 2
-#define DUK_TOK_CASE 3
-#define DUK_TOK_CATCH 4
-#define DUK_TOK_CONTINUE 5
-#define DUK_TOK_DEBUGGER 6
-#define DUK_TOK_DEFAULT 7
-#define DUK_TOK_DELETE 8
-#define DUK_TOK_DO 9
-#define DUK_TOK_ELSE 10
-#define DUK_TOK_FINALLY 11
-#define DUK_TOK_FOR 12
-#define DUK_TOK_FUNCTION 13
-#define DUK_TOK_IF 14
-#define DUK_TOK_IN 15
-#define DUK_TOK_INSTANCEOF 16
-#define DUK_TOK_NEW 17
-#define DUK_TOK_RETURN 18
-#define DUK_TOK_SWITCH 19
-#define DUK_TOK_THIS 20
-#define DUK_TOK_THROW 21
-#define DUK_TOK_TRY 22
-#define DUK_TOK_TYPEOF 23
-#define DUK_TOK_VAR 24
-#define DUK_TOK_CONST 25
-#define DUK_TOK_VOID 26
-#define DUK_TOK_WHILE 27
-#define DUK_TOK_WITH 28
-
-/* reserved words: future reserved words */
-#define DUK_TOK_CLASS 29
-#define DUK_TOK_ENUM 30
-#define DUK_TOK_EXPORT 31
-#define DUK_TOK_EXTENDS 32
-#define DUK_TOK_IMPORT 33
-#define DUK_TOK_SUPER 34
-
-/* "null", "true", and "false" are always reserved words.
- * Note that "get" and "set" are not!
- */
-#define DUK_TOK_NULL 35
-#define DUK_TOK_TRUE 36
-#define DUK_TOK_FALSE 37
-
-/* reserved words: additional future reserved words in strict mode */
-#define DUK_TOK_START_STRICT_RESERVED 38 /* inclusive */
-#define DUK_TOK_IMPLEMENTS 38
-#define DUK_TOK_INTERFACE 39
-#define DUK_TOK_LET 40
-#define DUK_TOK_PACKAGE 41
-#define DUK_TOK_PRIVATE 42
-#define DUK_TOK_PROTECTED 43
-#define DUK_TOK_PUBLIC 44
-#define DUK_TOK_STATIC 45
-#define DUK_TOK_YIELD 46
-
-#define DUK_TOK_END_RESERVED 47 /* exclusive */
-
-/* "get" and "set" are tokens but NOT ReservedWords. They are currently
- * parsed and identifiers and these defines are actually now unused.
- */
-#define DUK_TOK_GET 47
-#define DUK_TOK_SET 48
-
-/* punctuators (unlike the spec, also includes "/" and "/=") */
-#define DUK_TOK_LCURLY 49
-#define DUK_TOK_RCURLY 50
-#define DUK_TOK_LBRACKET 51
-#define DUK_TOK_RBRACKET 52
-#define DUK_TOK_LPAREN 53
-#define DUK_TOK_RPAREN 54
-#define DUK_TOK_PERIOD 55
-#define DUK_TOK_SEMICOLON 56
-#define DUK_TOK_COMMA 57
-#define DUK_TOK_LT 58
-#define DUK_TOK_GT 59
-#define DUK_TOK_LE 60
-#define DUK_TOK_GE 61
-#define DUK_TOK_EQ 62
-#define DUK_TOK_NEQ 63
-#define DUK_TOK_SEQ 64
-#define DUK_TOK_SNEQ 65
-#define DUK_TOK_ADD 66
-#define DUK_TOK_SUB 67
-#define DUK_TOK_MUL 68
-#define DUK_TOK_DIV 69
-#define DUK_TOK_MOD 70
-#define DUK_TOK_INCREMENT 71
-#define DUK_TOK_DECREMENT 72
-#define DUK_TOK_ALSHIFT 73 /* named "arithmetic" because result is signed */
-#define DUK_TOK_ARSHIFT 74
-#define DUK_TOK_RSHIFT 75
-#define DUK_TOK_BAND 76
-#define DUK_TOK_BOR 77
-#define DUK_TOK_BXOR 78
-#define DUK_TOK_LNOT 79
-#define DUK_TOK_BNOT 80
-#define DUK_TOK_LAND 81
-#define DUK_TOK_LOR 82
-#define DUK_TOK_QUESTION 83
-#define DUK_TOK_COLON 84
-#define DUK_TOK_EQUALSIGN 85
-#define DUK_TOK_ADD_EQ 86
-#define DUK_TOK_SUB_EQ 87
-#define DUK_TOK_MUL_EQ 88
-#define DUK_TOK_DIV_EQ 89
-#define DUK_TOK_MOD_EQ 90
-#define DUK_TOK_ALSHIFT_EQ 91
-#define DUK_TOK_ARSHIFT_EQ 92
-#define DUK_TOK_RSHIFT_EQ 93
-#define DUK_TOK_BAND_EQ 94
-#define DUK_TOK_BOR_EQ 95
-#define DUK_TOK_BXOR_EQ 96
-
-/* literals (E5 Section 7.8), except null, true, false, which are treated
- * like reserved words (above).
- */
-#define DUK_TOK_NUMBER 97
-#define DUK_TOK_STRING 98
-#define DUK_TOK_REGEXP 99
-
-#define DUK_TOK_MAXVAL 99 /* inclusive */
-
-/* Convert heap string index to a token (reserved words) */
-#define DUK_STRIDX_TO_TOK(x) ((x) - DUK_STRIDX_START_RESERVED + DUK_TOK_START_RESERVED)
-
-/* Sanity check */
-#if (DUK_TOK_MAXVAL > 255)
-#error DUK_TOK_MAXVAL too large, code assumes it fits into 8 bits
-#endif
-
-/* Sanity checks for string and token defines */
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_BREAK) != DUK_TOK_BREAK)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CASE) != DUK_TOK_CASE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CATCH) != DUK_TOK_CATCH)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CONTINUE) != DUK_TOK_CONTINUE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DEBUGGER) != DUK_TOK_DEBUGGER)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DEFAULT) != DUK_TOK_DEFAULT)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DELETE) != DUK_TOK_DELETE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_DO) != DUK_TOK_DO)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_ELSE) != DUK_TOK_ELSE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FINALLY) != DUK_TOK_FINALLY)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FOR) != DUK_TOK_FOR)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LC_FUNCTION) != DUK_TOK_FUNCTION)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IF) != DUK_TOK_IF)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IN) != DUK_TOK_IN)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_INSTANCEOF) != DUK_TOK_INSTANCEOF)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_NEW) != DUK_TOK_NEW)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_RETURN) != DUK_TOK_RETURN)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_SWITCH) != DUK_TOK_SWITCH)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_THIS) != DUK_TOK_THIS)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_THROW) != DUK_TOK_THROW)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TRY) != DUK_TOK_TRY)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TYPEOF) != DUK_TOK_TYPEOF)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_VAR) != DUK_TOK_VAR)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_VOID) != DUK_TOK_VOID)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_WHILE) != DUK_TOK_WHILE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_WITH) != DUK_TOK_WITH)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CLASS) != DUK_TOK_CLASS)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_CONST) != DUK_TOK_CONST)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_ENUM) != DUK_TOK_ENUM)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_EXPORT) != DUK_TOK_EXPORT)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_EXTENDS) != DUK_TOK_EXTENDS)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IMPORT) != DUK_TOK_IMPORT)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_SUPER) != DUK_TOK_SUPER)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LC_NULL) != DUK_TOK_NULL)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_TRUE) != DUK_TOK_TRUE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_FALSE) != DUK_TOK_FALSE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_IMPLEMENTS) != DUK_TOK_IMPLEMENTS)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_INTERFACE) != DUK_TOK_INTERFACE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_LET) != DUK_TOK_LET)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PACKAGE) != DUK_TOK_PACKAGE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PRIVATE) != DUK_TOK_PRIVATE)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PROTECTED) != DUK_TOK_PROTECTED)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_PUBLIC) != DUK_TOK_PUBLIC)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_STATIC) != DUK_TOK_STATIC)
-#error mismatch in token defines
-#endif
-#if (DUK_STRIDX_TO_TOK(DUK_STRIDX_YIELD) != DUK_TOK_YIELD)
-#error mismatch in token defines
-#endif
-
-/* Regexp tokens */
-#define DUK_RETOK_EOF 0
-#define DUK_RETOK_DISJUNCTION 1
-#define DUK_RETOK_QUANTIFIER 2
-#define DUK_RETOK_ASSERT_START 3
-#define DUK_RETOK_ASSERT_END 4
-#define DUK_RETOK_ASSERT_WORD_BOUNDARY 5
-#define DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY 6
-#define DUK_RETOK_ASSERT_START_POS_LOOKAHEAD 7
-#define DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD 8
-#define DUK_RETOK_ATOM_PERIOD 9
-#define DUK_RETOK_ATOM_CHAR 10
-#define DUK_RETOK_ATOM_DIGIT 11
-#define DUK_RETOK_ATOM_NOT_DIGIT 12
-#define DUK_RETOK_ATOM_WHITE 13
-#define DUK_RETOK_ATOM_NOT_WHITE 14
-#define DUK_RETOK_ATOM_WORD_CHAR 15
-#define DUK_RETOK_ATOM_NOT_WORD_CHAR 16
-#define DUK_RETOK_ATOM_BACKREFERENCE 17
-#define DUK_RETOK_ATOM_START_CAPTURE_GROUP 18
-#define DUK_RETOK_ATOM_START_NONCAPTURE_GROUP 19
-#define DUK_RETOK_ATOM_START_CHARCLASS 20
-#define DUK_RETOK_ATOM_START_CHARCLASS_INVERTED 21
-#define DUK_RETOK_ATOM_END_GROUP 22
-
-/* Constants for duk_lexer_ctx.buf. */
-#define DUK_LEXER_TEMP_BUF_LIMIT 256
-
-/* A token value. Can be memcpy()'d, but note that slot1/slot2 values are on the valstack.
- * Some fields (like num, str1, str2) are only valid for specific token types and may have
- * stale values otherwise.
- */
-struct duk_token {
- duk_small_int_t t; /* token type (with reserved word identification) */
- duk_small_int_t t_nores; /* token type (with reserved words as DUK_TOK_IDENTIFER) */
- duk_double_t num; /* numeric value of token */
- duk_hstring *str1; /* string 1 of token (borrowed, stored to ctx->slot1_idx) */
- duk_hstring *str2; /* string 2 of token (borrowed, stored to ctx->slot2_idx) */
- duk_size_t start_offset; /* start byte offset of token in lexer input */
- duk_int_t start_line; /* start line of token (first char) */
- duk_int_t num_escapes; /* number of escapes and line continuations (for directive prologue) */
- duk_bool_t lineterm; /* token was preceded by a lineterm */
- duk_bool_t allow_auto_semi; /* token allows automatic semicolon insertion (eof or preceded by newline) */
-};
-
-#define DUK_RE_QUANTIFIER_INFINITE ((duk_uint32_t) 0xffffffffUL)
-
-/* A regexp token value. */
-struct duk_re_token {
- duk_small_int_t t; /* token type */
- duk_small_int_t greedy;
- duk_uint_fast32_t num; /* numeric value (character, count) */
- duk_uint_fast32_t qmin;
- duk_uint_fast32_t qmax;
-};
-
-/* A structure for 'snapshotting' a point for rewinding */
-struct duk_lexer_point {
- duk_size_t offset;
- duk_int_t line;
-};
-
-/* Lexer codepoint with additional info like offset/line number */
-struct duk_lexer_codepoint {
- duk_codepoint_t codepoint;
- duk_size_t offset;
- duk_int_t line;
-};
-
-/* Lexer context. Same context is used for Ecmascript and Regexp parsing. */
-struct duk_lexer_ctx {
-#if defined(DUK_USE_LEXER_SLIDING_WINDOW)
- duk_lexer_codepoint *window; /* unicode code points, window[0] is always next, points to 'buffer' */
- duk_lexer_codepoint buffer[DUK_LEXER_BUFFER_SIZE];
-#else
- duk_lexer_codepoint window[DUK_LEXER_WINDOW_SIZE]; /* unicode code points, window[0] is always next */
-#endif
-
- duk_hthread *thr; /* thread; minimizes argument passing */
-
- const duk_uint8_t *input; /* input string (may be a user pointer) */
- duk_size_t input_length; /* input byte length */
- duk_size_t input_offset; /* input offset for window leading edge (not window[0]) */
- duk_int_t input_line; /* input linenumber at input_offset (not window[0]), init to 1 */
-
- duk_idx_t slot1_idx; /* valstack slot for 1st token value */
- duk_idx_t slot2_idx; /* valstack slot for 2nd token value */
- duk_idx_t buf_idx; /* valstack slot for temp buffer */
- duk_hbuffer_dynamic *buf; /* temp accumulation buffer */
- duk_bufwriter_ctx bw; /* bufwriter for temp accumulation */
-
- duk_int_t token_count; /* number of tokens parsed */
- duk_int_t token_limit; /* maximum token count before error (sanity backstop) */
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL void duk_lexer_initctx(duk_lexer_ctx *lex_ctx);
-
-DUK_INTERNAL_DECL void duk_lexer_setpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt);
-
-DUK_INTERNAL_DECL
-void duk_lexer_parse_js_input_element(duk_lexer_ctx *lex_ctx,
- duk_token *out_token,
- duk_bool_t strict_mode,
- duk_bool_t regexp_mode);
-#ifdef DUK_USE_REGEXP_SUPPORT
-DUK_INTERNAL_DECL void duk_lexer_parse_re_token(duk_lexer_ctx *lex_ctx, duk_re_token *out_token);
-DUK_INTERNAL_DECL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range_callback gen_range, void *userdata);
-#endif /* DUK_USE_REGEXP_SUPPORT */
-
-#endif /* DUK_LEXER_H_INCLUDED */
-#line 1 "duk_js_compiler.h"
-/*
- * Ecmascript compiler.
- */
-
-#ifndef DUK_JS_COMPILER_H_INCLUDED
-#define DUK_JS_COMPILER_H_INCLUDED
-
-/* ecmascript compiler limits */
-#define DUK_COMPILER_TOKEN_LIMIT 100000000L /* 1e8: protects against deeply nested inner functions */
-
-/* maximum loopcount for peephole optimization */
-#define DUK_COMPILER_PEEPHOLE_MAXITER 3
-
-/* maximum bytecode length in instructions */
-#define DUK_COMPILER_MAX_BYTECODE_LENGTH (256L * 1024L * 1024L) /* 1 GB */
-
-/*
- * Compiler intermediate values
- *
- * Intermediate values describe either plain values (e.g. strings or
- * numbers) or binary operations which have not yet been coerced into
- * either a left-hand-side or right-hand-side role (e.g. object property).
- */
-
-#define DUK_IVAL_NONE 0 /* no value */
-#define DUK_IVAL_PLAIN 1 /* register, constant, or value */
-#define DUK_IVAL_ARITH 2 /* binary arithmetic; DUK_OP_ADD, DUK_OP_EQ, other binary ops */
-#define DUK_IVAL_ARITH_EXTRAOP 3 /* binary arithmetic using extraops; DUK_EXTRAOP_INSTOF etc */
-#define DUK_IVAL_PROP 4 /* property access */
-#define DUK_IVAL_VAR 5 /* variable access */
-
-#define DUK_ISPEC_NONE 0 /* no value */
-#define DUK_ISPEC_VALUE 1 /* value resides in 'valstack_idx' */
-#define DUK_ISPEC_REGCONST 2 /* value resides in a register or constant */
-
-/* bit mask which indicates that a regconst is a constant instead of a register */
-#define DUK_JS_CONST_MARKER 0x80000000UL
-
-/* type to represent a reg/const reference during compilation */
-typedef duk_uint32_t duk_regconst_t;
-
-/* type to represent a straight register reference, with <0 indicating none */
-typedef duk_int32_t duk_reg_t;
-
-typedef struct {
- duk_small_uint_t t; /* DUK_ISPEC_XXX */
- duk_regconst_t regconst;
- duk_idx_t valstack_idx; /* always set; points to a reserved valstack slot */
-} duk_ispec;
-
-typedef struct {
- /*
- * PLAIN: x1
- * ARITH: x1 <op> x2
- * PROP: x1.x2
- * VAR: x1 (name)
- */
-
- /* XXX: can be optimized for smaller footprint esp. on 32-bit environments */
- duk_small_uint_t t; /* DUK_IVAL_XXX */
- duk_small_uint_t op; /* bytecode opcode (or extraop) for binary ops */
- duk_ispec x1;
- duk_ispec x2;
-} duk_ivalue;
-
-/*
- * Bytecode instruction representation during compilation
- *
- * Contains the actual instruction and (optionally) debug info.
- */
-
-struct duk_compiler_instr {
- duk_instr_t ins;
-#if defined(DUK_USE_PC2LINE)
- duk_uint32_t line;
-#endif
-};
-
-/*
- * Compiler state
- */
-
-#define DUK_LABEL_FLAG_ALLOW_BREAK (1 << 0)
-#define DUK_LABEL_FLAG_ALLOW_CONTINUE (1 << 1)
-
-#define DUK_DECL_TYPE_VAR 0
-#define DUK_DECL_TYPE_FUNC 1
-
-/* XXX: optimize to 16 bytes */
-typedef struct {
- duk_small_uint_t flags;
- duk_int_t label_id; /* numeric label_id (-1 reserved as marker) */
- duk_hstring *h_label; /* borrowed label name */
- duk_int_t catch_depth; /* catch depth at point of definition */
- duk_int_t pc_label; /* pc of label statement:
- * pc+1: break jump site
- * pc+2: continue jump site
- */
-
- /* Fast jumps (which avoid longjmp) jump directly to the jump sites
- * which are always known even while the iteration/switch statement
- * is still being parsed. A final peephole pass "straightens out"
- * the jumps.
- */
-} duk_labelinfo;
-
-/* Compiling state of one function, eventually converted to duk_hcompiledfunction */
-struct duk_compiler_func {
- /* These pointers are at the start of the struct so that they pack
- * nicely. Mixing pointers and integer values is bad on some
- * platforms (e.g. if int is 32 bits and pointers are 64 bits).
- */
-
- duk_bufwriter_ctx bw_code; /* bufwriter for code */
-
- duk_hstring *h_name; /* function name (borrowed reference), ends up in _name */
- /* h_code: held in bw_code */
- duk_hobject *h_consts; /* array */
- duk_hobject *h_funcs; /* array of function templates: [func1, offset1, line1, func2, offset2, line2]
- * offset/line points to closing brace to allow skipping on pass 2
- */
- duk_hobject *h_decls; /* array of declarations: [ name1, val1, name2, val2, ... ]
- * valN = (typeN) | (fnum << 8), where fnum is inner func number (0 for vars)
- * record function and variable declarations in pass 1
- */
- duk_hobject *h_labelnames; /* array of active label names */
- duk_hbuffer_dynamic *h_labelinfos; /* C array of duk_labelinfo */
- duk_hobject *h_argnames; /* array of formal argument names (-> _Formals) */
- duk_hobject *h_varmap; /* variable map for pass 2 (identifier -> register number or null (unmapped)) */
-
- /* value stack indices for tracking objects */
- /* code_idx: not needed */
- duk_idx_t consts_idx;
- duk_idx_t funcs_idx;
- duk_idx_t decls_idx;
- duk_idx_t labelnames_idx;
- duk_idx_t labelinfos_idx;
- duk_idx_t argnames_idx;
- duk_idx_t varmap_idx;
-
- /* temp reg handling */
- duk_reg_t temp_first; /* first register that is a temporary (below: variables) */
- duk_reg_t temp_next; /* next temporary register to allocate */
- duk_reg_t temp_max; /* highest value of temp_reg (temp_max - 1 is highest used reg) */
-
- /* shuffle registers if large number of regs/consts */
- duk_reg_t shuffle1;
- duk_reg_t shuffle2;
- duk_reg_t shuffle3;
-
- /* stats for current expression being parsed */
- duk_int_t nud_count;
- duk_int_t led_count;
- duk_int_t paren_level; /* parenthesis count, 0 = top level */
- duk_bool_t expr_lhs; /* expression is left-hand-side compatible */
- duk_bool_t allow_in; /* current paren level allows 'in' token */
-
- /* misc */
- duk_int_t stmt_next; /* statement id allocation (running counter) */
- duk_int_t label_next; /* label id allocation (running counter) */
- duk_int_t catch_depth; /* catch stack depth */
- duk_int_t with_depth; /* with stack depth (affects identifier lookups) */
- duk_int_t fnum_next; /* inner function numbering */
- duk_int_t num_formals; /* number of formal arguments */
- duk_reg_t reg_stmt_value; /* register for writing value of 'non-empty' statements (global or eval code), -1 is marker */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- duk_int_t min_line; /* XXX: typing (duk_hcompiledfunction has duk_uint32_t) */
- duk_int_t max_line;
-#endif
-
- /* status booleans */
- duk_bool_t is_function; /* is an actual function (not global/eval code) */
- duk_bool_t is_eval; /* is eval code */
- duk_bool_t is_global; /* is global code */
- duk_bool_t is_setget; /* is a setter/getter */
- duk_bool_t is_decl; /* is a function declaration (as opposed to function expression) */
- duk_bool_t is_strict; /* function is strict */
- duk_bool_t is_notail; /* function must not be tail called */
- duk_bool_t in_directive_prologue; /* parsing in "directive prologue", recognize directives */
- duk_bool_t in_scanning; /* parsing in "scanning" phase (first pass) */
- duk_bool_t may_direct_eval; /* function may call direct eval */
- duk_bool_t id_access_arguments; /* function refers to 'arguments' identifier */
- duk_bool_t id_access_slow; /* function makes one or more slow path accesses */
- duk_bool_t is_arguments_shadowed; /* argument/function declaration shadows 'arguments' */
- duk_bool_t needs_shuffle; /* function needs shuffle registers */
- duk_bool_t reject_regexp_in_adv; /* reject RegExp literal on next advance() call; needed for handling IdentifierName productions */
-};
-
-struct duk_compiler_ctx {
- duk_hthread *thr;
-
- /* filename being compiled (ends up in functions' '_filename' property) */
- duk_hstring *h_filename; /* borrowed reference */
-
- /* lexing (tokenization) state (contains two valstack slot indices) */
- duk_lexer_ctx lex;
-
- /* current and previous token for parsing */
- duk_token prev_token;
- duk_token curr_token;
- duk_idx_t tok11_idx; /* curr_token slot1 (matches 'lex' slot1_idx) */
- duk_idx_t tok12_idx; /* curr_token slot2 (matches 'lex' slot2_idx) */
- duk_idx_t tok21_idx; /* prev_token slot1 */
- duk_idx_t tok22_idx; /* prev_token slot2 */
-
- /* recursion limit */
- duk_int_t recursion_depth;
- duk_int_t recursion_limit;
-
- /* code emission temporary */
- duk_int_t emit_jumpslot_pc;
-
- /* current function being compiled (embedded instead of pointer for more compact access) */
- duk_compiler_func curr_func;
-};
-
-/*
- * Prototypes
- */
-
-#define DUK_JS_COMPILE_FLAG_EVAL (1 << 0) /* source is eval code (not global) */
-#define DUK_JS_COMPILE_FLAG_STRICT (1 << 1) /* strict outer context */
-#define DUK_JS_COMPILE_FLAG_FUNCEXPR (1 << 2) /* source is a function expression (used for Function constructor) */
-
-DUK_INTERNAL_DECL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_buffer, duk_size_t src_length, duk_small_uint_t flags);
-
-#endif /* DUK_JS_COMPILER_H_INCLUDED */
-#line 1 "duk_regexp.h"
-/*
- * Regular expression structs, constants, and bytecode defines.
- */
-
-#ifndef DUK_REGEXP_H_INCLUDED
-#define DUK_REGEXP_H_INCLUDED
-
-/* maximum bytecode copies for {n,m} quantifiers */
-#define DUK_RE_MAX_ATOM_COPIES 1000
-
-/* regexp compilation limits */
-#define DUK_RE_COMPILE_TOKEN_LIMIT 100000000L /* 1e8 */
-
-/* regexp execution limits */
-#define DUK_RE_EXECUTE_STEPS_LIMIT 1000000000L /* 1e9 */
-
-/* regexp opcodes */
-#define DUK_REOP_MATCH 1
-#define DUK_REOP_CHAR 2
-#define DUK_REOP_PERIOD 3
-#define DUK_REOP_RANGES 4
-#define DUK_REOP_INVRANGES 5
-#define DUK_REOP_JUMP 6
-#define DUK_REOP_SPLIT1 7
-#define DUK_REOP_SPLIT2 8
-#define DUK_REOP_SQMINIMAL 9
-#define DUK_REOP_SQGREEDY 10
-#define DUK_REOP_SAVE 11
-#define DUK_REOP_WIPERANGE 12
-#define DUK_REOP_LOOKPOS 13
-#define DUK_REOP_LOOKNEG 14
-#define DUK_REOP_BACKREFERENCE 15
-#define DUK_REOP_ASSERT_START 16
-#define DUK_REOP_ASSERT_END 17
-#define DUK_REOP_ASSERT_WORD_BOUNDARY 18
-#define DUK_REOP_ASSERT_NOT_WORD_BOUNDARY 19
-
-/* flags */
-#define DUK_RE_FLAG_GLOBAL (1 << 0)
-#define DUK_RE_FLAG_IGNORE_CASE (1 << 1)
-#define DUK_RE_FLAG_MULTILINE (1 << 2)
-
-struct duk_re_matcher_ctx {
- duk_hthread *thr;
-
- duk_uint32_t re_flags;
- const duk_uint8_t *input;
- const duk_uint8_t *input_end;
- const duk_uint8_t *bytecode;
- const duk_uint8_t *bytecode_end;
- const duk_uint8_t **saved; /* allocated from valstack (fixed buffer) */
- duk_uint32_t nsaved;
- duk_uint32_t recursion_depth;
- duk_uint32_t recursion_limit;
- duk_uint32_t steps_count;
- duk_uint32_t steps_limit;
-};
-
-struct duk_re_compiler_ctx {
- duk_hthread *thr;
-
- duk_uint32_t re_flags;
- duk_lexer_ctx lex;
- duk_re_token curr_token;
- duk_bufwriter_ctx bw;
- duk_uint32_t captures; /* highest capture number emitted so far (used as: ++captures) */
- duk_uint32_t highest_backref;
- duk_uint32_t recursion_depth;
- duk_uint32_t recursion_limit;
- duk_uint32_t nranges; /* internal temporary value, used for char classes */
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL void duk_regexp_compile(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_regexp_create_instance(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_regexp_match(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_regexp_match_force_global(duk_hthread *thr); /* hacky helper for String.prototype.split() */
-
-#endif /* DUK_REGEXP_H_INCLUDED */
-#line 1 "duk_heaphdr.h"
-/*
- * Heap header definition and assorted macros, including ref counting.
- * Access all fields through the accessor macros.
- */
-
-#ifndef DUK_HEAPHDR_H_INCLUDED
-#define DUK_HEAPHDR_H_INCLUDED
-
-/*
- * Common heap header
- *
- * All heap objects share the same flags and refcount fields. Objects other
- * than strings also need to have a single or double linked list pointers
- * for insertion into the "heap allocated" list. Strings are held in the
- * heap-wide string table so they don't need link pointers.
- *
- * Technically, 'h_refcount' must be wide enough to guarantee that it cannot
- * wrap (otherwise objects might be freed incorrectly after wrapping). This
- * means essentially that the refcount field must be as wide as data pointers.
- * On 64-bit platforms this means that the refcount needs to be 64 bits even
- * if an 'int' is 32 bits. This is a bit unfortunate, and compromising on
- * this might be reasonable in the future.
- *
- * Heap header size on 32-bit platforms: 8 bytes without reference counting,
- * 16 bytes with reference counting.
- */
-
-struct duk_heaphdr {
- duk_uint32_t h_flags;
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
-#if defined(DUK_USE_REFCOUNT16)
- duk_uint16_t h_refcount16;
-#else
- duk_size_t h_refcount;
-#endif
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t h_next16;
-#else
- duk_heaphdr *h_next;
-#endif
-
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP)
- /* refcounting requires direct heap frees, which in turn requires a dual linked heap */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t h_prev16;
-#else
- duk_heaphdr *h_prev;
-#endif
-#endif
-
- /* When DUK_USE_HEAPPTR16 (and DUK_USE_REFCOUNT16) is in use, the
- * struct won't align nicely to 4 bytes. This 16-bit extra field
- * is added to make the alignment clean; the field can be used by
- * heap objects when 16-bit packing is used. This field is now
- * conditional to DUK_USE_HEAPPTR16 only, but it is intended to be
- * used with DUK_USE_REFCOUNT16 and DUK_USE_DOUBLE_LINKED_HEAP;
- * this only matter to low memory environments anyway.
- */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t h_extra16;
-#endif
-};
-
-struct duk_heaphdr_string {
- /* 16 bits would be enough for shared heaphdr flags and duk_hstring
- * flags. The initial parts of duk_heaphdr_string and duk_heaphdr
- * must match so changing the flags field size here would be quite
- * awkward. However, to minimize struct size, we can pack at least
- * 16 bits of duk_hstring data into the flags field.
- */
- duk_uint32_t h_flags;
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
-#if defined(DUK_USE_REFCOUNT16)
- duk_uint16_t h_refcount16;
- duk_uint16_t h_strextra16; /* round out to 8 bytes */
-#else
- duk_size_t h_refcount;
-#endif
-#endif
-};
-
-#define DUK_HEAPHDR_FLAGS_TYPE_MASK 0x00000003UL
-#define DUK_HEAPHDR_FLAGS_FLAG_MASK (~DUK_HEAPHDR_FLAGS_TYPE_MASK)
-
- /* 2 bits for heap type */
-#define DUK_HEAPHDR_FLAGS_HEAP_START 2 /* 5 heap flags */
-#define DUK_HEAPHDR_FLAGS_USER_START 7 /* 25 user flags */
-
-#define DUK_HEAPHDR_HEAP_FLAG_NUMBER(n) (DUK_HEAPHDR_FLAGS_HEAP_START + (n))
-#define DUK_HEAPHDR_USER_FLAG_NUMBER(n) (DUK_HEAPHDR_FLAGS_USER_START + (n))
-#define DUK_HEAPHDR_HEAP_FLAG(n) (1UL << (DUK_HEAPHDR_FLAGS_HEAP_START + (n)))
-#define DUK_HEAPHDR_USER_FLAG(n) (1UL << (DUK_HEAPHDR_FLAGS_USER_START + (n)))
-
-#define DUK_HEAPHDR_FLAG_REACHABLE DUK_HEAPHDR_HEAP_FLAG(0) /* mark-and-sweep: reachable */
-#define DUK_HEAPHDR_FLAG_TEMPROOT DUK_HEAPHDR_HEAP_FLAG(1) /* mark-and-sweep: children not processed */
-#define DUK_HEAPHDR_FLAG_FINALIZABLE DUK_HEAPHDR_HEAP_FLAG(2) /* mark-and-sweep: finalizable (on current pass) */
-#define DUK_HEAPHDR_FLAG_FINALIZED DUK_HEAPHDR_HEAP_FLAG(3) /* mark-and-sweep: finalized (on previous pass) */
-#define DUK_HEAPHDR_FLAG_READONLY DUK_HEAPHDR_HEAP_FLAG(4) /* read-only object, in code section */
-
-#define DUK_HTYPE_MIN 1
-#define DUK_HTYPE_STRING 1
-#define DUK_HTYPE_OBJECT 2
-#define DUK_HTYPE_BUFFER 3
-#define DUK_HTYPE_MAX 3
-
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HEAPHDR_GET_NEXT(heap,h) \
- ((duk_heaphdr *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->h_next16))
-#define DUK_HEAPHDR_SET_NEXT(heap,h,val) do { \
- (h)->h_next16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) val); \
- } while (0)
-#else
-#define DUK_HEAPHDR_GET_NEXT(heap,h) ((h)->h_next)
-#define DUK_HEAPHDR_SET_NEXT(heap,h,val) do { \
- (h)->h_next = (val); \
- } while (0)
-#endif
-
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP)
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HEAPHDR_GET_PREV(heap,h) \
- ((duk_heaphdr *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->h_prev16))
-#define DUK_HEAPHDR_SET_PREV(heap,h,val) do { \
- (h)->h_prev16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (val)); \
- } while (0)
-#else
-#define DUK_HEAPHDR_GET_PREV(heap,h) ((h)->h_prev)
-#define DUK_HEAPHDR_SET_PREV(heap,h,val) do { \
- (h)->h_prev = (val); \
- } while (0)
-#endif
-#endif
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
-#if defined(DUK_USE_REFCOUNT16)
-#define DUK_HEAPHDR_GET_REFCOUNT(h) ((h)->h_refcount16)
-#define DUK_HEAPHDR_SET_REFCOUNT(h,val) do { \
- (h)->h_refcount16 = (val); \
- } while (0)
-#define DUK_HEAPHDR_PREINC_REFCOUNT(h) (++(h)->h_refcount16) /* result: updated refcount */
-#define DUK_HEAPHDR_PREDEC_REFCOUNT(h) (--(h)->h_refcount16) /* result: updated refcount */
-#else
-#define DUK_HEAPHDR_GET_REFCOUNT(h) ((h)->h_refcount)
-#define DUK_HEAPHDR_SET_REFCOUNT(h,val) do { \
- (h)->h_refcount = (val); \
- } while (0)
-#define DUK_HEAPHDR_PREINC_REFCOUNT(h) (++(h)->h_refcount) /* result: updated refcount */
-#define DUK_HEAPHDR_PREDEC_REFCOUNT(h) (--(h)->h_refcount) /* result: updated refcount */
-#endif
-#else
-/* refcount macros not defined without refcounting, caller must #ifdef now */
-#endif /* DUK_USE_REFERENCE_COUNTING */
-
-/*
- * Note: type is treated as a field separate from flags, so some masking is
- * involved in the macros below.
- */
-
-#define DUK_HEAPHDR_GET_FLAGS_RAW(h) ((h)->h_flags)
-
-#define DUK_HEAPHDR_GET_FLAGS(h) ((h)->h_flags & DUK_HEAPHDR_FLAGS_FLAG_MASK)
-#define DUK_HEAPHDR_SET_FLAGS(h,val) do { \
- (h)->h_flags = ((h)->h_flags & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) | (val); \
- } while (0)
-
-#define DUK_HEAPHDR_GET_TYPE(h) ((h)->h_flags & DUK_HEAPHDR_FLAGS_TYPE_MASK)
-#define DUK_HEAPHDR_SET_TYPE(h,val) do { \
- (h)->h_flags = ((h)->h_flags & ~(DUK_HEAPHDR_FLAGS_TYPE_MASK)) | (val); \
- } while (0)
-
-#define DUK_HEAPHDR_HTYPE_VALID(h) ( \
- DUK_HEAPHDR_GET_TYPE((h)) >= DUK_HTYPE_MIN && \
- DUK_HEAPHDR_GET_TYPE((h)) <= DUK_HTYPE_MAX \
- )
-
-#define DUK_HEAPHDR_SET_TYPE_AND_FLAGS(h,tval,fval) do { \
- (h)->h_flags = ((tval) & DUK_HEAPHDR_FLAGS_TYPE_MASK) | \
- ((fval) & DUK_HEAPHDR_FLAGS_FLAG_MASK); \
- } while (0)
-
-#define DUK_HEAPHDR_SET_FLAG_BITS(h,bits) do { \
- DUK_ASSERT(((bits) & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) == 0); \
- (h)->h_flags |= (bits); \
- } while (0)
-
-#define DUK_HEAPHDR_CLEAR_FLAG_BITS(h,bits) do { \
- DUK_ASSERT(((bits) & ~(DUK_HEAPHDR_FLAGS_FLAG_MASK)) == 0); \
- (h)->h_flags &= ~((bits)); \
- } while (0)
-
-#define DUK_HEAPHDR_CHECK_FLAG_BITS(h,bits) (((h)->h_flags & (bits)) != 0)
-
-#define DUK_HEAPHDR_SET_REACHABLE(h) DUK_HEAPHDR_SET_FLAG_BITS((h),DUK_HEAPHDR_FLAG_REACHABLE)
-#define DUK_HEAPHDR_CLEAR_REACHABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h),DUK_HEAPHDR_FLAG_REACHABLE)
-#define DUK_HEAPHDR_HAS_REACHABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h),DUK_HEAPHDR_FLAG_REACHABLE)
-
-#define DUK_HEAPHDR_SET_TEMPROOT(h) DUK_HEAPHDR_SET_FLAG_BITS((h),DUK_HEAPHDR_FLAG_TEMPROOT)
-#define DUK_HEAPHDR_CLEAR_TEMPROOT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h),DUK_HEAPHDR_FLAG_TEMPROOT)
-#define DUK_HEAPHDR_HAS_TEMPROOT(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h),DUK_HEAPHDR_FLAG_TEMPROOT)
-
-#define DUK_HEAPHDR_SET_FINALIZABLE(h) DUK_HEAPHDR_SET_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZABLE)
-#define DUK_HEAPHDR_CLEAR_FINALIZABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZABLE)
-#define DUK_HEAPHDR_HAS_FINALIZABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZABLE)
-
-#define DUK_HEAPHDR_SET_FINALIZED(h) DUK_HEAPHDR_SET_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZED)
-#define DUK_HEAPHDR_CLEAR_FINALIZED(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZED)
-#define DUK_HEAPHDR_HAS_FINALIZED(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h),DUK_HEAPHDR_FLAG_FINALIZED)
-
-#define DUK_HEAPHDR_SET_READONLY(h) DUK_HEAPHDR_SET_FLAG_BITS((h),DUK_HEAPHDR_FLAG_READONLY)
-#define DUK_HEAPHDR_CLEAR_READONLY(h) DUK_HEAPHDR_CLEAR_FLAG_BITS((h),DUK_HEAPHDR_FLAG_READONLY)
-#define DUK_HEAPHDR_HAS_READONLY(h) DUK_HEAPHDR_CHECK_FLAG_BITS((h),DUK_HEAPHDR_FLAG_READONLY)
-
-/* get or set a range of flags; m=first bit number, n=number of bits */
-#define DUK_HEAPHDR_GET_FLAG_RANGE(h,m,n) (((h)->h_flags >> (m)) & ((1UL << (n)) - 1UL))
-
-#define DUK_HEAPHDR_SET_FLAG_RANGE(h,m,n,v) do { \
- (h)->h_flags = \
- ((h)->h_flags & (~(((1 << (n)) - 1) << (m)))) \
- | ((v) << (m)); \
- } while (0)
-
-/* init pointer fields to null */
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP)
-#define DUK_HEAPHDR_INIT_NULLS(h) do { \
- DUK_HEAPHDR_SET_NEXT((h), (void *) NULL); \
- DUK_HEAPHDR_SET_PREV((h), (void *) NULL); \
- } while (0)
-#else
-#define DUK_HEAPHDR_INIT_NULLS(h) do { \
- DUK_HEAPHDR_SET_NEXT((h), (void *) NULL); \
- } while (0)
-#endif
-
-#define DUK_HEAPHDR_STRING_INIT_NULLS(h) /* currently nop */
-
-/*
- * Assert helpers
- */
-
-/* Check that prev/next links are consistent: if e.g. h->prev is != NULL,
- * h->prev->next should point back to h.
- */
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP) && defined(DUK_USE_ASSERTIONS)
-#define DUK_ASSERT_HEAPHDR_LINKS(heap,h) do { \
- if ((h) != NULL) { \
- duk_heaphdr *h__prev, *h__next; \
- h__prev = DUK_HEAPHDR_GET_PREV((heap), (h)); \
- h__next = DUK_HEAPHDR_GET_NEXT((heap), (h)); \
- DUK_ASSERT(h__prev == NULL || (DUK_HEAPHDR_GET_NEXT((heap), h__prev) == (h))); \
- DUK_ASSERT(h__next == NULL || (DUK_HEAPHDR_GET_PREV((heap), h__next) == (h))); \
- } \
- } while (0)
-#else
-#define DUK_ASSERT_HEAPHDR_LINKS(heap,h) do {} while (0)
-#endif
-
-/*
- * Reference counting helper macros. The macros take a thread argument
- * and must thus always be executed in a specific thread context. The
- * thread argument is needed for features like finalization. Currently
- * it is not required for INCREF, but it is included just in case.
- *
- * Note that 'raw' macros such as DUK_HEAPHDR_GET_REFCOUNT() are not
- * defined without DUK_USE_REFERENCE_COUNTING, so caller must #ifdef
- * around them.
- */
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
-
-#if defined(DUK_USE_ROM_OBJECTS)
-/* With ROM objects "needs refcount update" is true when the value is
- * heap allocated and is not a ROM object.
- */
-/* XXX: double evaluation for 'tv' argument. */
-#define DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv) \
- (DUK_TVAL_IS_HEAP_ALLOCATED((tv)) && !DUK_HEAPHDR_HAS_READONLY(DUK_TVAL_GET_HEAPHDR((tv))))
-#define DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(h) (!DUK_HEAPHDR_HAS_READONLY((h)))
-#else /* DUK_USE_ROM_OBJECTS */
-/* Without ROM objects "needs refcount update" == is heap allocated. */
-#define DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv) DUK_TVAL_IS_HEAP_ALLOCATED((tv))
-#define DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(h) 1
-#endif /* DUK_USE_ROM_OBJECTS */
-
-/* Fast variants, inline refcount operations except for refzero handling.
- * Can be used explicitly when speed is always more important than size.
- * For a good compiler and a single file build, these are basically the
- * same as a forced inline.
- */
-#define DUK_TVAL_INCREF_FAST(thr,tv) do { \
- duk_tval *duk__tv = (tv); \
- DUK_ASSERT(duk__tv != NULL); \
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk__tv)) { \
- duk_heaphdr *duk__h = DUK_TVAL_GET_HEAPHDR(duk__tv); \
- DUK_ASSERT(duk__h != NULL); \
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \
- DUK_HEAPHDR_PREINC_REFCOUNT(duk__h); \
- } \
- } while (0)
-#define DUK_TVAL_DECREF_FAST(thr,tv) do { \
- duk_tval *duk__tv = (tv); \
- DUK_ASSERT(duk__tv != NULL); \
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(duk__tv)) { \
- duk_heaphdr *duk__h = DUK_TVAL_GET_HEAPHDR(duk__tv); \
- DUK_ASSERT(duk__h != NULL); \
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) > 0); \
- if (DUK_HEAPHDR_PREDEC_REFCOUNT(duk__h) == 0) { \
- duk_heaphdr_refzero((thr), duk__h); \
- } \
- } \
- } while (0)
-#define DUK_HEAPHDR_INCREF_FAST(thr,h) do { \
- duk_heaphdr *duk__h = (duk_heaphdr *) (h); \
- DUK_ASSERT(duk__h != NULL); \
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \
- if (DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(duk__h)) { \
- DUK_HEAPHDR_PREINC_REFCOUNT(duk__h); \
- } \
- } while (0)
-#define DUK_HEAPHDR_DECREF_FAST(thr,h) do { \
- duk_heaphdr *duk__h = (duk_heaphdr *) (h); \
- DUK_ASSERT(duk__h != NULL); \
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(duk__h)); \
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(duk__h) > 0); \
- if (DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE(duk__h)) { \
- if (DUK_HEAPHDR_PREDEC_REFCOUNT(duk__h) == 0) { \
- duk_heaphdr_refzero((thr), duk__h); \
- } \
- } \
- } while (0)
-
-/* Slow variants, call to a helper to reduce code size.
- * Can be used explicitly when size is always more important than speed.
- */
-#define DUK_TVAL_INCREF_SLOW(thr,tv) do { \
- duk_tval_incref((tv)); \
- } while (0)
-#define DUK_TVAL_DECREF_SLOW(thr,tv) do { \
- duk_tval_decref((thr), (tv)); \
- } while (0)
-#define DUK_HEAPHDR_INCREF_SLOW(thr,h) do { \
- duk_heaphdr_incref((duk_heaphdr *) (h)); \
- } while (0)
-#define DUK_HEAPHDR_DECREF_SLOW(thr,h) do { \
- duk_heaphdr_decref((thr), (duk_heaphdr *) (h)); \
- } while (0)
-
-/* Default variants. Selection depends on speed/size preference.
- * Concretely: with gcc 4.8.1 -Os x64 the difference in final binary
- * is about +1kB for _FAST variants.
- */
-#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-#define DUK_TVAL_INCREF(thr,tv) DUK_TVAL_INCREF_FAST((thr),(tv))
-#define DUK_TVAL_DECREF(thr,tv) DUK_TVAL_DECREF_FAST((thr),(tv))
-#define DUK_HEAPHDR_INCREF(thr,h) DUK_HEAPHDR_INCREF_FAST((thr),(h))
-#define DUK_HEAPHDR_DECREF(thr,h) DUK_HEAPHDR_DECREF_FAST((thr),(h))
-#else
-#define DUK_TVAL_INCREF(thr,tv) DUK_TVAL_INCREF_SLOW((thr),(tv))
-#define DUK_TVAL_DECREF(thr,tv) DUK_TVAL_DECREF_SLOW((thr),(tv))
-#define DUK_HEAPHDR_INCREF(thr,h) DUK_HEAPHDR_INCREF_SLOW((thr),(h))
-#define DUK_HEAPHDR_DECREF(thr,h) DUK_HEAPHDR_DECREF_SLOW((thr),(h))
-#endif
-
-/* Casting convenience. */
-#define DUK_HSTRING_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) (h))
-#define DUK_HSTRING_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) (h))
-#define DUK_HOBJECT_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) (h))
-#define DUK_HOBJECT_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) (h))
-#define DUK_HBUFFER_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) (h))
-#define DUK_HBUFFER_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) (h))
-#define DUK_HCOMPILEDFUNCTION_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HCOMPILEDFUNCTION_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HNATIVEFUNCTION_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HNATIVEFUNCTION_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HBUFFEROBJECT_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HBUFFEROBJECT_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HTHREAD_INCREF(thr,h) DUK_HEAPHDR_INCREF((thr),(duk_heaphdr *) &(h)->obj)
-#define DUK_HTHREAD_DECREF(thr,h) DUK_HEAPHDR_DECREF((thr),(duk_heaphdr *) &(h)->obj)
-
-/* Convenience for some situations; the above macros don't allow NULLs
- * for performance reasons.
- */
-#define DUK_HOBJECT_INCREF_ALLOWNULL(thr,h) do { \
- if ((h) != NULL) { \
- DUK_HEAPHDR_INCREF((thr), (duk_heaphdr *) (h)); \
- } \
- } while (0)
-#define DUK_HOBJECT_DECREF_ALLOWNULL(thr,h) do { \
- if ((h) != NULL) { \
- DUK_HEAPHDR_DECREF((thr), (duk_heaphdr *) (h)); \
- } \
- } while (0)
-
-/*
- * Macros to set a duk_tval and update refcount of the target (decref the
- * old value and incref the new value if necessary). This is both performance
- * and footprint critical; any changes made should be measured for size/speed.
- */
-
-#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_UNDEFINED(tv__dst); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_UNUSED(tv__dst); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_NULL(tv__dst); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_NAN(tv__dst); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-#else
-#define DUK_TVAL_SET_DOUBLE_CAST_UPDREF(thr,tvptr_dst,newval) \
- DUK_TVAL_SET_DOUBLE_UPDREF((thr), (tvptr_dst), (duk_double_t) (newval))
-#endif /* DUK_USE_FASTINT */
-
-#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_STRING(tv__dst, (newval)); \
- DUK_HSTRING_INCREF((thr), (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \
- DUK_HOBJECT_INCREF((thr), (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \
- DUK_HBUFFER_INCREF((thr), (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; duk_tval tv__tmp; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_POINTER(tv__dst, (newval)); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-/* DUK_TVAL_SET_TVAL_UPDREF() is used a lot in executor, property lookups,
- * etc, so it's very important for performance. Measure when changing.
- *
- * NOTE: the source and destination duk_tval pointers may be the same, and
- * the macros MUST deal with that correctly.
- */
-
-/* Original idiom used, minimal code size. */
-#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \
- duk_tval *tv__dst, *tv__src; duk_tval tv__tmp; \
- tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
- DUK_TVAL_SET_TVAL(&tv__tmp, tv__dst); \
- DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
- DUK_TVAL_INCREF((thr), tv__src); \
- DUK_TVAL_DECREF((thr), &tv__tmp); /* side effects */ \
- } while (0)
-
-/* Faster alternative: avoid making a temporary copy of tvptr_dst and use
- * fast incref/decref macros.
- */
-#define DUK_TVAL_SET_TVAL_UPDREF_ALT1(thr,tvptr_dst,tvptr_src) do { \
- duk_tval *tv__dst, *tv__src; duk_heaphdr *h__obj; \
- tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
- DUK_TVAL_INCREF_FAST((thr), tv__src); \
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv__dst)) { \
- h__obj = DUK_TVAL_GET_HEAPHDR(tv__dst); \
- DUK_ASSERT(h__obj != NULL); \
- DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
- DUK_HEAPHDR_DECREF_FAST((thr), h__obj); /* side effects */ \
- } else { \
- DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
- } \
- } while (0)
-
-/* XXX: no optimized variants yet */
-#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0
-#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0
-#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0
-#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0
-#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0
-#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0
-#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0
-#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0
-#else
-#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF /* XXX: fast int-to-double */
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF
-#endif /* DUK_USE_FASTINT */
-#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0
-#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0
-#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0
-#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0
-#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0
-
-#if defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-/* Optimized for speed. */
-#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT1
-#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT1
-#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#else
-/* Optimized for size. */
-#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#endif
-
-#else /* DUK_USE_REFERENCE_COUNTING */
-
-#define DUK_TVAL_INCREF_FAST(thr,v) do {} while (0) /* nop */
-#define DUK_TVAL_DECREF_FAST(thr,v) do {} while (0) /* nop */
-#define DUK_TVAL_INCREF_SLOW(thr,v) do {} while (0) /* nop */
-#define DUK_TVAL_DECREF_SLOW(thr,v) do {} while (0) /* nop */
-#define DUK_TVAL_INCREF(thr,v) do {} while (0) /* nop */
-#define DUK_TVAL_DECREF(thr,v) do {} while (0) /* nop */
-#define DUK_HEAPHDR_INCREF_FAST(thr,h) do {} while (0) /* nop */
-#define DUK_HEAPHDR_DECREF_FAST(thr,h) do {} while (0) /* nop */
-#define DUK_HEAPHDR_INCREF_SLOW(thr,h) do {} while (0) /* nop */
-#define DUK_HEAPHDR_DECREF_SLOW(thr,h) do {} while (0) /* nop */
-#define DUK_HEAPHDR_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HEAPHDR_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HSTRING_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HSTRING_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HOBJECT_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HOBJECT_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HBUFFER_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HBUFFER_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HCOMPILEDFUNCTION_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HCOMPILEDFUNCTION_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HNATIVEFUNCTION_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HNATIVEFUNCTION_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HBUFFEROBJECT_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HBUFFEROBJECT_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HTHREAD_INCREF(thr,h) do {} while (0) /* nop */
-#define DUK_HTHREAD_DECREF(thr,h) do {} while (0) /* nop */
-#define DUK_HOBJECT_INCREF_ALLOWNULL(thr,h) do {} while (0) /* nop */
-#define DUK_HOBJECT_DECREF_ALLOWNULL(thr,h) do {} while (0) /* nop */
-
-#define DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_UNDEFINED(tv__dst); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_UNUSED_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_UNUSED(tv__dst); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_NULL_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_NULL(tv__dst); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_BOOLEAN(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_NUMBER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_NUMBER(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_NUMBER_CHKFAST(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#define DUK_TVAL_SET_DOUBLE_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_DOUBLE(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#define DUK_TVAL_SET_NAN_UPDREF_ALT0(thr,tvptr_dst) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_NAN(tv__dst); \
- DUK_UNREF((thr)); \
- } while (0)
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_FASTINT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_FASTINT(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_FASTINT_I32(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_FASTINT_U32(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-#else
-#define DUK_TVAL_SET_DOUBLE_CAST_UPDREF(thr,tvptr_dst,newval) \
- DUK_TVAL_SET_DOUBLE_UPDREF((thr), (tvptr_dst), (duk_double_t) (newval))
-#endif /* DUK_USE_FASTINT */
-
-#define DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0(thr,tvptr_dst,lf_v,lf_fp,lf_flags) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_LIGHTFUNC(tv__dst, (lf_v), (lf_fp), (lf_flags)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_STRING_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_STRING(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_OBJECT_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_OBJECT(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_BUFFER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_BUFFER(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_POINTER_UPDREF_ALT0(thr,tvptr_dst,newval) do { \
- duk_tval *tv__dst; tv__dst = (tvptr_dst); \
- DUK_TVAL_SET_POINTER(tv__dst, (newval)); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_TVAL_UPDREF_ALT0(thr,tvptr_dst,tvptr_src) do { \
- duk_tval *tv__dst, *tv__src; \
- tv__dst = (tvptr_dst); tv__src = (tvptr_src); \
- DUK_TVAL_SET_TVAL(tv__dst, tv__src); \
- DUK_UNREF((thr)); \
- } while (0)
-
-#define DUK_TVAL_SET_UNDEFINED_UPDREF DUK_TVAL_SET_UNDEFINED_UPDREF_ALT0
-#define DUK_TVAL_SET_UNUSED_UPDREF DUK_TVAL_SET_UNUSED_UPDREF_ALT0
-#define DUK_TVAL_SET_NULL_UPDREF DUK_TVAL_SET_NULL_UPDREF_ALT0
-#define DUK_TVAL_SET_BOOLEAN_UPDREF DUK_TVAL_SET_BOOLEAN_UPDREF_ALT0
-#define DUK_TVAL_SET_NUMBER_UPDREF DUK_TVAL_SET_NUMBER_UPDREF_ALT0
-#define DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF DUK_TVAL_SET_NUMBER_CHKFAST_UPDREF_ALT0
-#define DUK_TVAL_SET_DOUBLE_UPDREF DUK_TVAL_SET_DOUBLE_UPDREF_ALT0
-#define DUK_TVAL_SET_NAN_UPDREF DUK_TVAL_SET_NAN_UPDREF_ALT0
-#if defined(DUK_USE_FASTINT)
-#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_FASTINT_UPDREF_ALT0
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_FASTINT_I32_UPDREF_ALT0
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_FASTINT_U32_UPDREF_ALT0
-#else
-#define DUK_TVAL_SET_FASTINT_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF /* XXX: fast-int-to-double */
-#define DUK_TVAL_SET_FASTINT_I32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF
-#define DUK_TVAL_SET_FASTINT_U32_UPDREF DUK_TVAL_SET_DOUBLE_CAST_UPDREF
-#endif /* DUK_USE_FASTINT */
-#define DUK_TVAL_SET_LIGHTFUNC_UPDREF DUK_TVAL_SET_LIGHTFUNC_UPDREF_ALT0
-#define DUK_TVAL_SET_STRING_UPDREF DUK_TVAL_SET_STRING_UPDREF_ALT0
-#define DUK_TVAL_SET_OBJECT_UPDREF DUK_TVAL_SET_OBJECT_UPDREF_ALT0
-#define DUK_TVAL_SET_BUFFER_UPDREF DUK_TVAL_SET_BUFFER_UPDREF_ALT0
-#define DUK_TVAL_SET_POINTER_UPDREF DUK_TVAL_SET_POINTER_UPDREF_ALT0
-
-#define DUK_TVAL_SET_TVAL_UPDREF DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#define DUK_TVAL_SET_TVAL_UPDREF_FAST DUK_TVAL_SET_TVAL_UPDREF_ALT0
-#define DUK_TVAL_SET_TVAL_UPDREF_SLOW DUK_TVAL_SET_TVAL_UPDREF_ALT0
-
-#endif /* DUK_USE_REFERENCE_COUNTING */
-
-#endif /* DUK_HEAPHDR_H_INCLUDED */
-#line 1 "duk_api_internal.h"
-/*
- * Internal API calls which have (stack and other) semantics similar
- * to the public API.
- */
-
-#ifndef DUK_API_INTERNAL_H_INCLUDED
-#define DUK_API_INTERNAL_H_INCLUDED
-
-/* duk_push_sprintf constants */
-#define DUK_PUSH_SPRINTF_INITIAL_SIZE 256L
-#define DUK_PUSH_SPRINTF_SANITY_LIMIT (1L * 1024L * 1024L * 1024L)
-
-/* Flag ORed to err_code to indicate __FILE__ / __LINE__ is not
- * blamed as source of error for error fileName / lineNumber.
- */
-#define DUK_ERRCODE_FLAG_NOBLAME_FILELINE (1L << 24)
-
-/* Valstack resize flags */
-#define DUK_VSRESIZE_FLAG_SHRINK (1 << 0)
-#define DUK_VSRESIZE_FLAG_COMPACT (1 << 1)
-#define DUK_VSRESIZE_FLAG_THROW (1 << 2)
-
-/* Current convention is to use duk_size_t for value stack sizes and global indices,
- * and duk_idx_t for local frame indices.
- */
-DUK_INTERNAL_DECL
-duk_bool_t duk_valstack_resize_raw(duk_context *ctx,
- duk_size_t min_new_size,
- duk_small_uint_t flags);
-
-#if defined(DUK_USE_VERBOSE_ERRORS) && defined(DUK_USE_PARANOID_ERRORS)
-DUK_INTERNAL_DECL const char *duk_get_type_name(duk_context *ctx, duk_idx_t index);
-#endif
-
-DUK_INTERNAL_DECL duk_tval *duk_get_tval(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_tval *duk_require_tval(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL void duk_push_tval(duk_context *ctx, duk_tval *tv);
-
-/* Push the current 'this' binding; throw TypeError if binding is not object
- * coercible (CheckObjectCoercible).
- */
-DUK_INTERNAL_DECL void duk_push_this_check_object_coercible(duk_context *ctx);
-
-/* duk_push_this() + CheckObjectCoercible() + duk_to_object() */
-DUK_INTERNAL_DECL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx);
-
-/* duk_push_this() + CheckObjectCoercible() + duk_to_string() */
-DUK_INTERNAL_DECL duk_hstring *duk_push_this_coercible_to_string(duk_context *ctx);
-
-/* Get a borrowed duk_tval pointer to the current 'this' binding. Caller must
- * make sure there's an active callstack entry. Note that the returned pointer
- * is unstable with regards to side effects.
- */
-DUK_INTERNAL_DECL duk_tval *duk_get_borrowed_this_tval(duk_context *ctx);
-
-/* XXX: add fastint support? */
-#define duk_push_u64(ctx,val) \
- duk_push_number((ctx), (duk_double_t) (val))
-#define duk_push_i64(ctx,val) \
- duk_push_number((ctx), (duk_double_t) (val))
-
-/* duk_push_(u)int() is guaranteed to support at least (un)signed 32-bit range */
-#define duk_push_u32(ctx,val) \
- duk_push_uint((ctx), (duk_uint_t) (val))
-#define duk_push_i32(ctx,val) \
- duk_push_int((ctx), (duk_int_t) (val))
-
-/* sometimes stack and array indices need to go on the stack */
-#define duk_push_idx(ctx,val) \
- duk_push_int((ctx), (duk_int_t) (val))
-#define duk_push_uarridx(ctx,val) \
- duk_push_uint((ctx), (duk_uint_t) (val))
-#define duk_push_size_t(ctx,val) \
- duk_push_uint((ctx), (duk_uint_t) (val)) /* XXX: assumed to fit for now */
-
-DUK_INTERNAL_DECL duk_hstring *duk_get_hstring(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hobject *duk_get_hobject(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hbuffer *duk_get_hbuffer(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hthread *duk_get_hthread(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hcompiledfunction *duk_get_hcompiledfunction(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hnativefunction *duk_get_hnativefunction(duk_context *ctx, duk_idx_t index);
-
-DUK_INTERNAL_DECL duk_hobject *duk_get_hobject_with_class(duk_context *ctx, duk_idx_t index, duk_small_uint_t classnum);
-
-#if 0 /* This would be pointless: unexpected type and lightfunc would both return NULL */
-DUK_INTERNAL_DECL duk_hobject *duk_get_hobject_or_lfunc(duk_context *ctx, duk_idx_t index);
-#endif
-DUK_INTERNAL_DECL duk_hobject *duk_get_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index);
-
-#if 0 /*unused*/
-DUK_INTERNAL_DECL void *duk_get_voidptr(duk_context *ctx, duk_idx_t index);
-#endif
-
-DUK_INTERNAL_DECL duk_hstring *duk_to_hstring(duk_context *ctx, duk_idx_t index);
-#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */
-DUK_INTERNAL_DECL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index);
-#endif
-DUK_INTERNAL_DECL void duk_to_object_class_string_top(duk_context *ctx);
-#if !defined(DUK_USE_PARANOID_ERRORS)
-DUK_INTERNAL_DECL void duk_push_hobject_class_string(duk_context *ctx, duk_hobject *h);
-#endif
-
-DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped); /* out_clamped=NULL, RangeError if outside range */
-DUK_INTERNAL_DECL duk_int_t duk_to_int_clamped(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval);
-DUK_INTERNAL_DECL duk_int_t duk_to_int_check_range(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval);
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL_DECL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index);
-#endif
-
-DUK_INTERNAL_DECL duk_hstring *duk_require_hstring(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hobject *duk_require_hobject(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hbuffer *duk_require_hbuffer(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hthread *duk_require_hthread(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hcompiledfunction *duk_require_hcompiledfunction(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hnativefunction *duk_require_hnativefunction(duk_context *ctx, duk_idx_t index);
-
-DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_with_class(duk_context *ctx, duk_idx_t index, duk_small_uint_t classnum);
-
-DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL duk_hobject *duk_require_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index);
-
-DUK_INTERNAL_DECL void duk_push_hstring(duk_context *ctx, duk_hstring *h);
-DUK_INTERNAL_DECL void duk_push_hstring_stridx(duk_context *ctx, duk_small_int_t stridx);
-DUK_INTERNAL_DECL void duk_push_hobject(duk_context *ctx, duk_hobject *h);
-DUK_INTERNAL_DECL void duk_push_hbuffer(duk_context *ctx, duk_hbuffer *h);
-#define duk_push_hthread(ctx,h) \
- duk_push_hobject((ctx), (duk_hobject *) (h))
-#define duk_push_hcompiledfunction(ctx,h) \
- duk_push_hobject((ctx), (duk_hobject *) (h))
-#define duk_push_hnativefunction(ctx,h) \
- duk_push_hobject((ctx), (duk_hobject *) (h))
-DUK_INTERNAL_DECL void duk_push_hobject_bidx(duk_context *ctx, duk_small_int_t builtin_idx);
-DUK_INTERNAL_DECL duk_idx_t duk_push_object_helper(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx);
-DUK_INTERNAL_DECL duk_idx_t duk_push_object_helper_proto(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_hobject *proto);
-DUK_INTERNAL_DECL duk_idx_t duk_push_object_internal(duk_context *ctx);
-DUK_INTERNAL_DECL duk_idx_t duk_push_compiledfunction(duk_context *ctx);
-DUK_INTERNAL_DECL void duk_push_c_function_noexotic(duk_context *ctx, duk_c_function func, duk_int_t nargs);
-DUK_INTERNAL_DECL void duk_push_c_function_noconstruct_noexotic(duk_context *ctx, duk_c_function func, duk_int_t nargs);
-
-DUK_INTERNAL_DECL void duk_push_string_funcptr(duk_context *ctx, duk_uint8_t *ptr, duk_size_t sz);
-DUK_INTERNAL_DECL void duk_push_lightfunc_name(duk_context *ctx, duk_tval *tv);
-DUK_INTERNAL_DECL void duk_push_lightfunc_tostring(duk_context *ctx, duk_tval *tv);
-DUK_INTERNAL_DECL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx);
-
-#if !defined(DUK_USE_PARANOID_ERRORS)
-DUK_INTERNAL_DECL const char *duk_push_string_readable(duk_context *ctx, duk_idx_t index);
-DUK_INTERNAL_DECL const char *duk_push_string_tval_readable(duk_context *ctx, duk_tval *tv);
-#endif
-
-DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [] -> [val] */
-DUK_INTERNAL_DECL duk_bool_t duk_put_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [val] -> [] */
-DUK_INTERNAL_DECL duk_bool_t duk_del_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [] -> [] */
-DUK_INTERNAL_DECL duk_bool_t duk_has_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx); /* [] -> [] */
-
-DUK_INTERNAL_DECL duk_bool_t duk_get_prop_stridx_boolean(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_bool_t *out_has_prop); /* [] -> [] */
-
-DUK_INTERNAL_DECL void duk_xdef_prop(duk_context *ctx, duk_idx_t obj_index, duk_small_uint_t desc_flags); /* [key val] -> [] */
-DUK_INTERNAL_DECL void duk_xdef_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index, duk_small_uint_t desc_flags); /* [val] -> [] */
-DUK_INTERNAL_DECL void duk_xdef_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_uint_t desc_flags); /* [val] -> [] */
-DUK_INTERNAL_DECL void duk_xdef_prop_stridx_builtin(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_int_t builtin_idx, duk_small_uint_t desc_flags); /* [] -> [] */
-DUK_INTERNAL_DECL void duk_xdef_prop_stridx_thrower(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_uint_t desc_flags); /* [] -> [] */
-
-/* These are macros for now, but could be separate functions to reduce code
- * footprint (check call site count before refactoring).
- */
-#define duk_xdef_prop_wec(ctx,obj_index) \
- duk_xdef_prop((ctx), (obj_index), DUK_PROPDESC_FLAGS_WEC)
-#define duk_xdef_prop_index_wec(ctx,obj_index,arr_index) \
- duk_xdef_prop_index((ctx), (obj_index), (arr_index), DUK_PROPDESC_FLAGS_WEC)
-#define duk_xdef_prop_stridx_wec(ctx,obj_index,stridx) \
- duk_xdef_prop_stridx((ctx), (obj_index), (stridx), DUK_PROPDESC_FLAGS_WEC)
-
-/* Set object 'length'. */
-DUK_INTERNAL_DECL void duk_set_length(duk_context *ctx, duk_idx_t index, duk_size_t length);
-
-/* Raw internal valstack access macros: access is unsafe so call site
- * must have a guarantee that the index is valid. When that is the case,
- * using these macro results in faster and smaller code than duk_get_tval().
- * Both 'ctx' and 'idx' are evaluted multiple times, but only for asserts.
- */
-#define DUK_ASSERT_VALID_NEGIDX(ctx,idx) \
- (DUK_ASSERT_EXPR((idx) < 0), DUK_ASSERT_EXPR(duk_is_valid_index((ctx), (idx))))
-#define DUK_ASSERT_VALID_POSIDX(ctx,idx) \
- (DUK_ASSERT_EXPR((idx) >= 0), DUK_ASSERT_EXPR(duk_is_valid_index((ctx), (idx))))
-#define DUK_GET_TVAL_NEGIDX(ctx,idx) \
- (DUK_ASSERT_VALID_NEGIDX((ctx),(idx)), ((duk_hthread *) (ctx))->valstack_top + (idx))
-#define DUK_GET_TVAL_POSIDX(ctx,idx) \
- (DUK_ASSERT_VALID_POSIDX((ctx),(idx)), ((duk_hthread *) (ctx))->valstack_bottom + (idx))
-#define DUK_GET_HOBJECT_NEGIDX(ctx,idx) \
- (DUK_ASSERT_VALID_NEGIDX((ctx),(idx)), DUK_TVAL_GET_OBJECT(((duk_hthread *) (ctx))->valstack_top + (idx)))
-#define DUK_GET_HOBJECT_POSIDX(ctx,idx) \
- (DUK_ASSERT_VALID_POSIDX((ctx),(idx)), DUK_TVAL_GET_OBJECT(((duk_hthread *) (ctx))->valstack_bottom + (idx)))
-
-#endif /* DUK_API_INTERNAL_H_INCLUDED */
-#line 1 "duk_hstring.h"
-/*
- * Heap string representation.
- *
- * Strings are byte sequences ordinarily stored in extended UTF-8 format,
- * allowing values larger than the official UTF-8 range (used internally)
- * and also allowing UTF-8 encoding of surrogate pairs (CESU-8 format).
- * Strings may also be invalid UTF-8 altogether which is the case e.g. with
- * strings used as internal property names and raw buffers converted to
- * strings. In such cases the 'clen' field contains an inaccurate value.
- *
- * Ecmascript requires support for 32-bit long strings. However, since each
- * 16-bit codepoint can take 3 bytes in CESU-8, this representation can only
- * support about 1.4G codepoint long strings in extreme cases. This is not
- * really a practical issue.
- */
-
-#ifndef DUK_HSTRING_H_INCLUDED
-#define DUK_HSTRING_H_INCLUDED
-
-/* Impose a maximum string length for now. Restricted artificially to
- * ensure adding a heap header length won't overflow size_t. The limit
- * should be synchronized with DUK_HBUFFER_MAX_BYTELEN.
- *
- * E5.1 makes provisions to support strings longer than 4G characters.
- * This limit should be eliminated on 64-bit platforms (and increased
- * closer to maximum support on 32-bit platforms).
- */
-
-#if defined(DUK_USE_STRLEN16)
-#define DUK_HSTRING_MAX_BYTELEN (0x0000ffffUL)
-#else
-#define DUK_HSTRING_MAX_BYTELEN (0x7fffffffUL)
-#endif
-
-/* XXX: could add flags for "is valid CESU-8" (Ecmascript compatible strings),
- * "is valid UTF-8", "is valid extended UTF-8" (internal strings are not,
- * regexp bytecode is), and "contains non-BMP characters". These are not
- * needed right now.
- */
-
-#define DUK_HSTRING_FLAG_ASCII DUK_HEAPHDR_USER_FLAG(0) /* string is ASCII, clen == blen */
-#define DUK_HSTRING_FLAG_ARRIDX DUK_HEAPHDR_USER_FLAG(1) /* string is a valid array index */
-#define DUK_HSTRING_FLAG_INTERNAL DUK_HEAPHDR_USER_FLAG(2) /* string is internal */
-#define DUK_HSTRING_FLAG_RESERVED_WORD DUK_HEAPHDR_USER_FLAG(3) /* string is a reserved word (non-strict) */
-#define DUK_HSTRING_FLAG_STRICT_RESERVED_WORD DUK_HEAPHDR_USER_FLAG(4) /* string is a reserved word (strict) */
-#define DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS DUK_HEAPHDR_USER_FLAG(5) /* string is 'eval' or 'arguments' */
-#define DUK_HSTRING_FLAG_EXTDATA DUK_HEAPHDR_USER_FLAG(6) /* string data is external (duk_hstring_external) */
-
-#define DUK_HSTRING_HAS_ASCII(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII)
-#define DUK_HSTRING_HAS_ARRIDX(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX)
-#define DUK_HSTRING_HAS_INTERNAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_INTERNAL)
-#define DUK_HSTRING_HAS_RESERVED_WORD(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD)
-#define DUK_HSTRING_HAS_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD)
-#define DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS)
-#define DUK_HSTRING_HAS_EXTDATA(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA)
-
-#define DUK_HSTRING_SET_ASCII(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII)
-#define DUK_HSTRING_SET_ARRIDX(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX)
-#define DUK_HSTRING_SET_INTERNAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_INTERNAL)
-#define DUK_HSTRING_SET_RESERVED_WORD(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD)
-#define DUK_HSTRING_SET_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD)
-#define DUK_HSTRING_SET_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS)
-#define DUK_HSTRING_SET_EXTDATA(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA)
-
-#define DUK_HSTRING_CLEAR_ASCII(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ASCII)
-#define DUK_HSTRING_CLEAR_ARRIDX(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_ARRIDX)
-#define DUK_HSTRING_CLEAR_INTERNAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_INTERNAL)
-#define DUK_HSTRING_CLEAR_RESERVED_WORD(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_RESERVED_WORD)
-#define DUK_HSTRING_CLEAR_STRICT_RESERVED_WORD(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_STRICT_RESERVED_WORD)
-#define DUK_HSTRING_CLEAR_EVAL_OR_ARGUMENTS(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS)
-#define DUK_HSTRING_CLEAR_EXTDATA(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HSTRING_FLAG_EXTDATA)
-
-#if 0 /* Slightly smaller code without explicit flag, but explicit flag
- * is very useful when 'clen' is dropped.
- */
-#define DUK_HSTRING_IS_ASCII(x) (DUK_HSTRING_GET_BYTELEN((x)) == DUK_HSTRING_GET_CHARLEN((x)))
-#endif
-#define DUK_HSTRING_IS_ASCII(x) DUK_HSTRING_HAS_ASCII((x))
-#define DUK_HSTRING_IS_EMPTY(x) (DUK_HSTRING_GET_BYTELEN((x)) == 0)
-
-#if defined(DUK_USE_STRHASH16)
-#define DUK_HSTRING_GET_HASH(x) ((x)->hdr.h_flags >> 16)
-#define DUK_HSTRING_SET_HASH(x,v) do { \
- (x)->hdr.h_flags = ((x)->hdr.h_flags & 0x0000ffffUL) | ((v) << 16); \
- } while (0)
-#else
-#define DUK_HSTRING_GET_HASH(x) ((x)->hash)
-#define DUK_HSTRING_SET_HASH(x,v) do { \
- (x)->hash = (v); \
- } while (0)
-#endif
-
-#if defined(DUK_USE_STRLEN16)
-#define DUK_HSTRING_GET_BYTELEN(x) ((x)->hdr.h_strextra16)
-#define DUK_HSTRING_SET_BYTELEN(x,v) do { \
- (x)->hdr.h_strextra16 = (v); \
- } while (0)
-#if defined(DUK_USE_HSTRING_CLEN)
-#define DUK_HSTRING_GET_CHARLEN(x) ((x)->clen16)
-#define DUK_HSTRING_SET_CHARLEN(x,v) do { \
- (x)->clen16 = (v); \
- } while (0)
-#else
-#define DUK_HSTRING_GET_CHARLEN(x) duk_hstring_get_charlen((x))
-#define DUK_HSTRING_SET_CHARLEN(x,v) do { \
- DUK_ASSERT(0); /* should never be called */ \
- } while (0)
-#endif
-#else
-#define DUK_HSTRING_GET_BYTELEN(x) ((x)->blen)
-#define DUK_HSTRING_SET_BYTELEN(x,v) do { \
- (x)->blen = (v); \
- } while (0)
-#define DUK_HSTRING_GET_CHARLEN(x) ((x)->clen)
-#define DUK_HSTRING_SET_CHARLEN(x,v) do { \
- (x)->clen = (v); \
- } while (0)
-#endif
-
-#if defined(DUK_USE_HSTRING_EXTDATA)
-#define DUK_HSTRING_GET_EXTDATA(x) \
- ((x)->extdata)
-#define DUK_HSTRING_GET_DATA(x) \
- (DUK_HSTRING_HAS_EXTDATA((x)) ? \
- DUK_HSTRING_GET_EXTDATA((const duk_hstring_external *) (x)) : ((const duk_uint8_t *) ((x) + 1)))
-#else
-#define DUK_HSTRING_GET_DATA(x) \
- ((const duk_uint8_t *) ((x) + 1))
-#endif
-
-#define DUK_HSTRING_GET_DATA_END(x) \
- (DUK_HSTRING_GET_DATA((x)) + (x)->blen)
-
-/* marker value; in E5 2^32-1 is not a valid array index (2^32-2 is highest valid) */
-#define DUK_HSTRING_NO_ARRAY_INDEX (0xffffffffUL)
-
-/* get array index related to string (or return DUK_HSTRING_NO_ARRAY_INDEX);
- * avoids helper call if string has no array index value.
- */
-#define DUK_HSTRING_GET_ARRIDX_FAST(h) \
- (DUK_HSTRING_HAS_ARRIDX((h)) ? duk_js_to_arrayindex_string_helper((h)) : DUK_HSTRING_NO_ARRAY_INDEX)
-
-/* slower but more compact variant */
-#define DUK_HSTRING_GET_ARRIDX_SLOW(h) \
- (duk_js_to_arrayindex_string_helper((h)))
-
-/*
- * Misc
- */
-
-struct duk_hstring {
- /* Smaller heaphdr than for other objects, because strings are held
- * in string intern table which requires no link pointers. Much of
- * the 32-bit flags field is unused by flags, so we can stuff a 16-bit
- * field in there.
- */
- duk_heaphdr_string hdr;
-
- /* Note: we could try to stuff a partial hash (e.g. 16 bits) into the
- * shared heap header. Good hashing needs more hash bits though.
- */
-
- /* string hash */
-#if defined(DUK_USE_STRHASH16)
- /* If 16-bit hash is in use, stuff it into duk_heaphdr_string flags. */
-#else
- duk_uint32_t hash;
-#endif
-
- /* length in bytes (not counting NUL term) */
-#if defined(DUK_USE_STRLEN16)
- /* placed in duk_heaphdr_string */
-#else
- duk_uint32_t blen;
-#endif
-
- /* length in codepoints (must be E5 compatible) */
-#if defined(DUK_USE_STRLEN16)
-#if defined(DUK_USE_HSTRING_CLEN)
- duk_uint16_t clen16;
-#else
- /* computed live */
-#endif
-#else
- duk_uint32_t clen;
-#endif
-
- /*
- * String value of 'blen+1' bytes follows (+1 for NUL termination
- * convenience for C API). No alignment needs to be guaranteed
- * for strings, but fields above should guarantee alignment-by-4
- * (but not alignment-by-8).
- */
-};
-
-/* The external string struct is defined even when the feature is inactive. */
-struct duk_hstring_external {
- duk_hstring str;
-
- /*
- * For an external string, the NUL-terminated string data is stored
- * externally. The user must guarantee that data behind this pointer
- * doesn't change while it's used.
- */
-
- const duk_uint8_t *extdata;
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr, duk_hstring *h, duk_uint_t pos);
-
-#if !defined(DUK_USE_HSTRING_CLEN)
-DUK_INTERNAL_DECL duk_size_t duk_hstring_get_charlen(duk_hstring *h);
-#endif
-
-#endif /* DUK_HSTRING_H_INCLUDED */
-#line 1 "duk_hobject.h"
-/*
- * Heap object representation.
- *
- * Heap objects are used for Ecmascript objects, arrays, and functions,
- * but also for internal control like declarative and object environment
- * records. Compiled functions, native functions, and threads are also
- * objects but with an extended C struct.
- *
- * Objects provide the required Ecmascript semantics and exotic behaviors
- * especially for property access.
- *
- * Properties are stored in three conceptual parts:
- *
- * 1. A linear 'entry part' contains ordered key-value-attributes triples
- * and is the main method of string properties.
- *
- * 2. An optional linear 'array part' is used for array objects to store a
- * (dense) range of [0,N[ array indexed entries with default attributes
- * (writable, enumerable, configurable). If the array part would become
- * sparse or non-default attributes are required, the array part is
- * abandoned and moved to the 'entry part'.
- *
- * 3. An optional 'hash part' is used to optimize lookups of the entry
- * part; it is used only for objects with sufficiently many properties
- * and can be abandoned without loss of information.
- *
- * These three conceptual parts are stored in a single memory allocated area.
- * This minimizes memory allocation overhead but also means that all three
- * parts are resized together, and makes property access a bit complicated.
- */
-
-#ifndef DUK_HOBJECT_H_INCLUDED
-#define DUK_HOBJECT_H_INCLUDED
-
-/* Object flag. There are currently 26 flag bits available. Make sure
- * this stays in sync with debugger object inspection code.
- */
-#define DUK_HOBJECT_FLAG_EXTENSIBLE DUK_HEAPHDR_USER_FLAG(0) /* object is extensible */
-#define DUK_HOBJECT_FLAG_CONSTRUCTABLE DUK_HEAPHDR_USER_FLAG(1) /* object is constructable */
-#define DUK_HOBJECT_FLAG_BOUND DUK_HEAPHDR_USER_FLAG(2) /* object established using Function.prototype.bind() */
-#define DUK_HOBJECT_FLAG_COMPILEDFUNCTION DUK_HEAPHDR_USER_FLAG(4) /* object is a compiled function (duk_hcompiledfunction) */
-#define DUK_HOBJECT_FLAG_NATIVEFUNCTION DUK_HEAPHDR_USER_FLAG(5) /* object is a native function (duk_hnativefunction) */
-#define DUK_HOBJECT_FLAG_BUFFEROBJECT DUK_HEAPHDR_USER_FLAG(6) /* object is a buffer object (duk_hbufferobject) (always exotic) */
-#define DUK_HOBJECT_FLAG_THREAD DUK_HEAPHDR_USER_FLAG(7) /* object is a thread (duk_hthread) */
-#define DUK_HOBJECT_FLAG_ARRAY_PART DUK_HEAPHDR_USER_FLAG(8) /* object has an array part (a_size may still be 0) */
-#define DUK_HOBJECT_FLAG_STRICT DUK_HEAPHDR_USER_FLAG(9) /* function: function object is strict */
-#define DUK_HOBJECT_FLAG_NOTAIL DUK_HEAPHDR_USER_FLAG(10) /* function: function must not be tail called */
-#define DUK_HOBJECT_FLAG_NEWENV DUK_HEAPHDR_USER_FLAG(11) /* function: create new environment when called (see duk_hcompiledfunction) */
-#define DUK_HOBJECT_FLAG_NAMEBINDING DUK_HEAPHDR_USER_FLAG(12) /* function: create binding for func name (function templates only, used for named function expressions) */
-#define DUK_HOBJECT_FLAG_CREATEARGS DUK_HEAPHDR_USER_FLAG(13) /* function: create an arguments object on function call */
-#define DUK_HOBJECT_FLAG_ENVRECCLOSED DUK_HEAPHDR_USER_FLAG(14) /* envrec: (declarative) record is closed */
-#define DUK_HOBJECT_FLAG_EXOTIC_ARRAY DUK_HEAPHDR_USER_FLAG(15) /* 'Array' object, array length and index exotic behavior */
-#define DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ DUK_HEAPHDR_USER_FLAG(16) /* 'String' object, array index exotic behavior */
-#define DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS DUK_HEAPHDR_USER_FLAG(17) /* 'Arguments' object and has arguments exotic behavior (non-strict callee) */
-#define DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC DUK_HEAPHDR_USER_FLAG(18) /* Duktape/C (nativefunction) object, exotic 'length' */
-#define DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ DUK_HEAPHDR_USER_FLAG(19) /* 'Proxy' object */
-
-#define DUK_HOBJECT_FLAG_CLASS_BASE DUK_HEAPHDR_USER_FLAG_NUMBER(20)
-#define DUK_HOBJECT_FLAG_CLASS_BITS 5
-
-#define DUK_HOBJECT_GET_CLASS_NUMBER(h) \
- DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS)
-#define DUK_HOBJECT_SET_CLASS_NUMBER(h,v) \
- DUK_HEAPHDR_SET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS, (v))
-
-#define DUK_HOBJECT_GET_CLASS_MASK(h) \
- (1UL << DUK_HEAPHDR_GET_FLAG_RANGE(&(h)->hdr, DUK_HOBJECT_FLAG_CLASS_BASE, DUK_HOBJECT_FLAG_CLASS_BITS))
-
-/* Macro for creating flag initializer from a class number.
- * Unsigned type cast is needed to avoid warnings about coercing
- * a signed integer to an unsigned one; the largest class values
- * have the highest bit (bit 31) set which causes this.
- */
-#define DUK_HOBJECT_CLASS_AS_FLAGS(v) (((duk_uint_t) (v)) << DUK_HOBJECT_FLAG_CLASS_BASE)
-
-/* E5 Section 8.6.2 + custom classes */
-#define DUK_HOBJECT_CLASS_UNUSED 0
-#define DUK_HOBJECT_CLASS_ARGUMENTS 1
-#define DUK_HOBJECT_CLASS_ARRAY 2
-#define DUK_HOBJECT_CLASS_BOOLEAN 3
-#define DUK_HOBJECT_CLASS_DATE 4
-#define DUK_HOBJECT_CLASS_ERROR 5
-#define DUK_HOBJECT_CLASS_FUNCTION 6
-#define DUK_HOBJECT_CLASS_JSON 7
-#define DUK_HOBJECT_CLASS_MATH 8
-#define DUK_HOBJECT_CLASS_NUMBER 9
-#define DUK_HOBJECT_CLASS_OBJECT 10
-#define DUK_HOBJECT_CLASS_REGEXP 11
-#define DUK_HOBJECT_CLASS_STRING 12
-#define DUK_HOBJECT_CLASS_GLOBAL 13
-#define DUK_HOBJECT_CLASS_OBJENV 14 /* custom */
-#define DUK_HOBJECT_CLASS_DECENV 15 /* custom */
-#define DUK_HOBJECT_CLASS_BUFFER 16 /* custom; implies DUK_HOBJECT_IS_BUFFEROBJECT */
-#define DUK_HOBJECT_CLASS_POINTER 17 /* custom */
-#define DUK_HOBJECT_CLASS_THREAD 18 /* custom; implies DUK_HOBJECT_IS_THREAD */
-#define DUK_HOBJECT_CLASS_ARRAYBUFFER 19 /* implies DUK_HOBJECT_IS_BUFFEROBJECT */
-#define DUK_HOBJECT_CLASS_DATAVIEW 20
-#define DUK_HOBJECT_CLASS_INT8ARRAY 21
-#define DUK_HOBJECT_CLASS_UINT8ARRAY 22
-#define DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY 23
-#define DUK_HOBJECT_CLASS_INT16ARRAY 24
-#define DUK_HOBJECT_CLASS_UINT16ARRAY 25
-#define DUK_HOBJECT_CLASS_INT32ARRAY 26
-#define DUK_HOBJECT_CLASS_UINT32ARRAY 27
-#define DUK_HOBJECT_CLASS_FLOAT32ARRAY 28
-#define DUK_HOBJECT_CLASS_FLOAT64ARRAY 29
-#define DUK_HOBJECT_CLASS_MAX 29
-
-/* class masks */
-#define DUK_HOBJECT_CMASK_ALL ((1UL << (DUK_HOBJECT_CLASS_MAX + 1)) - 1UL)
-#define DUK_HOBJECT_CMASK_UNUSED (1UL << DUK_HOBJECT_CLASS_UNUSED)
-#define DUK_HOBJECT_CMASK_ARGUMENTS (1UL << DUK_HOBJECT_CLASS_ARGUMENTS)
-#define DUK_HOBJECT_CMASK_ARRAY (1UL << DUK_HOBJECT_CLASS_ARRAY)
-#define DUK_HOBJECT_CMASK_BOOLEAN (1UL << DUK_HOBJECT_CLASS_BOOLEAN)
-#define DUK_HOBJECT_CMASK_DATE (1UL << DUK_HOBJECT_CLASS_DATE)
-#define DUK_HOBJECT_CMASK_ERROR (1UL << DUK_HOBJECT_CLASS_ERROR)
-#define DUK_HOBJECT_CMASK_FUNCTION (1UL << DUK_HOBJECT_CLASS_FUNCTION)
-#define DUK_HOBJECT_CMASK_JSON (1UL << DUK_HOBJECT_CLASS_JSON)
-#define DUK_HOBJECT_CMASK_MATH (1UL << DUK_HOBJECT_CLASS_MATH)
-#define DUK_HOBJECT_CMASK_NUMBER (1UL << DUK_HOBJECT_CLASS_NUMBER)
-#define DUK_HOBJECT_CMASK_OBJECT (1UL << DUK_HOBJECT_CLASS_OBJECT)
-#define DUK_HOBJECT_CMASK_REGEXP (1UL << DUK_HOBJECT_CLASS_REGEXP)
-#define DUK_HOBJECT_CMASK_STRING (1UL << DUK_HOBJECT_CLASS_STRING)
-#define DUK_HOBJECT_CMASK_GLOBAL (1UL << DUK_HOBJECT_CLASS_GLOBAL)
-#define DUK_HOBJECT_CMASK_OBJENV (1UL << DUK_HOBJECT_CLASS_OBJENV)
-#define DUK_HOBJECT_CMASK_DECENV (1UL << DUK_HOBJECT_CLASS_DECENV)
-#define DUK_HOBJECT_CMASK_BUFFER (1UL << DUK_HOBJECT_CLASS_BUFFER)
-#define DUK_HOBJECT_CMASK_POINTER (1UL << DUK_HOBJECT_CLASS_POINTER)
-#define DUK_HOBJECT_CMASK_THREAD (1UL << DUK_HOBJECT_CLASS_THREAD)
-#define DUK_HOBJECT_CMASK_ARRAYBUFFER (1UL << DUK_HOBJECT_CLASS_ARRAYBUFFER)
-#define DUK_HOBJECT_CMASK_DATAVIEW (1UL << DUK_HOBJECT_CLASS_DATAVIEW)
-#define DUK_HOBJECT_CMASK_INT8ARRAY (1UL << DUK_HOBJECT_CLASS_INT8ARRAY)
-#define DUK_HOBJECT_CMASK_UINT8ARRAY (1UL << DUK_HOBJECT_CLASS_UINT8ARRAY)
-#define DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY (1UL << DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY)
-#define DUK_HOBJECT_CMASK_INT16ARRAY (1UL << DUK_HOBJECT_CLASS_INT16ARRAY)
-#define DUK_HOBJECT_CMASK_UINT16ARRAY (1UL << DUK_HOBJECT_CLASS_UINT16ARRAY)
-#define DUK_HOBJECT_CMASK_INT32ARRAY (1UL << DUK_HOBJECT_CLASS_INT32ARRAY)
-#define DUK_HOBJECT_CMASK_UINT32ARRAY (1UL << DUK_HOBJECT_CLASS_UINT32ARRAY)
-#define DUK_HOBJECT_CMASK_FLOAT32ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT32ARRAY)
-#define DUK_HOBJECT_CMASK_FLOAT64ARRAY (1UL << DUK_HOBJECT_CLASS_FLOAT64ARRAY)
-
-#define DUK_HOBJECT_CMASK_ALL_BUFFEROBJECTS \
- (DUK_HOBJECT_CMASK_BUFFER | \
- DUK_HOBJECT_CMASK_ARRAYBUFFER | \
- DUK_HOBJECT_CMASK_DATAVIEW | \
- DUK_HOBJECT_CMASK_INT8ARRAY | \
- DUK_HOBJECT_CMASK_UINT8ARRAY | \
- DUK_HOBJECT_CMASK_UINT8CLAMPEDARRAY | \
- DUK_HOBJECT_CMASK_INT16ARRAY | \
- DUK_HOBJECT_CMASK_UINT16ARRAY | \
- DUK_HOBJECT_CMASK_INT32ARRAY | \
- DUK_HOBJECT_CMASK_UINT32ARRAY | \
- DUK_HOBJECT_CMASK_FLOAT32ARRAY | \
- DUK_HOBJECT_CMASK_FLOAT64ARRAY)
-
-#define DUK_HOBJECT_IS_OBJENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_OBJENV)
-#define DUK_HOBJECT_IS_DECENV(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_DECENV)
-#define DUK_HOBJECT_IS_ENV(h) (DUK_HOBJECT_IS_OBJENV((h)) || DUK_HOBJECT_IS_DECENV((h)))
-#define DUK_HOBJECT_IS_ARRAY(h) (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_ARRAY)
-#define DUK_HOBJECT_IS_COMPILEDFUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPILEDFUNCTION)
-#define DUK_HOBJECT_IS_NATIVEFUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-#define DUK_HOBJECT_IS_BUFFEROBJECT(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFFEROBJECT)
-#define DUK_HOBJECT_IS_THREAD(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_THREAD)
-
-#define DUK_HOBJECT_IS_NONBOUND_FUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, \
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION | \
- DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-
-#define DUK_HOBJECT_IS_FUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, \
- DUK_HOBJECT_FLAG_BOUND | \
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION | \
- DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-
-#define DUK_HOBJECT_IS_CALLABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, \
- DUK_HOBJECT_FLAG_BOUND | \
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION | \
- DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-
-/* object has any exotic behavior(s) */
-#define DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS (DUK_HOBJECT_FLAG_EXOTIC_ARRAY | \
- DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS | \
- DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ | \
- DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC | \
- DUK_HOBJECT_FLAG_BUFFEROBJECT | \
- DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ)
-
-#define DUK_HOBJECT_HAS_EXOTIC_BEHAVIOR(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_EXOTIC_BEHAVIOR_FLAGS)
-
-#define DUK_HOBJECT_HAS_EXTENSIBLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE)
-#define DUK_HOBJECT_HAS_CONSTRUCTABLE(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE)
-#define DUK_HOBJECT_HAS_BOUND(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUND)
-#define DUK_HOBJECT_HAS_COMPILEDFUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPILEDFUNCTION)
-#define DUK_HOBJECT_HAS_NATIVEFUNCTION(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-#define DUK_HOBJECT_HAS_BUFFEROBJECT(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFFEROBJECT)
-#define DUK_HOBJECT_HAS_THREAD(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_THREAD)
-#define DUK_HOBJECT_HAS_ARRAY_PART(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART)
-#define DUK_HOBJECT_HAS_STRICT(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT)
-#define DUK_HOBJECT_HAS_NOTAIL(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL)
-#define DUK_HOBJECT_HAS_NEWENV(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV)
-#define DUK_HOBJECT_HAS_NAMEBINDING(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING)
-#define DUK_HOBJECT_HAS_CREATEARGS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS)
-#define DUK_HOBJECT_HAS_ENVRECCLOSED(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ENVRECCLOSED)
-#define DUK_HOBJECT_HAS_EXOTIC_ARRAY(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY)
-#define DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ)
-#define DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS)
-#define DUK_HOBJECT_HAS_EXOTIC_DUKFUNC(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC)
-#define DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CHECK_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ)
-
-#define DUK_HOBJECT_SET_EXTENSIBLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE)
-#define DUK_HOBJECT_SET_CONSTRUCTABLE(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE)
-#define DUK_HOBJECT_SET_BOUND(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUND)
-#define DUK_HOBJECT_SET_COMPILEDFUNCTION(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPILEDFUNCTION)
-#define DUK_HOBJECT_SET_NATIVEFUNCTION(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-#define DUK_HOBJECT_SET_BUFFEROBJECT(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFFEROBJECT)
-#define DUK_HOBJECT_SET_THREAD(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_THREAD)
-#define DUK_HOBJECT_SET_ARRAY_PART(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART)
-#define DUK_HOBJECT_SET_STRICT(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT)
-#define DUK_HOBJECT_SET_NOTAIL(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL)
-#define DUK_HOBJECT_SET_NEWENV(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV)
-#define DUK_HOBJECT_SET_NAMEBINDING(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING)
-#define DUK_HOBJECT_SET_CREATEARGS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS)
-#define DUK_HOBJECT_SET_ENVRECCLOSED(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ENVRECCLOSED)
-#define DUK_HOBJECT_SET_EXOTIC_ARRAY(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY)
-#define DUK_HOBJECT_SET_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ)
-#define DUK_HOBJECT_SET_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS)
-#define DUK_HOBJECT_SET_EXOTIC_DUKFUNC(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC)
-#define DUK_HOBJECT_SET_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_SET_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ)
-
-#define DUK_HOBJECT_CLEAR_EXTENSIBLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXTENSIBLE)
-#define DUK_HOBJECT_CLEAR_CONSTRUCTABLE(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CONSTRUCTABLE)
-#define DUK_HOBJECT_CLEAR_BOUND(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BOUND)
-#define DUK_HOBJECT_CLEAR_COMPILEDFUNCTION(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_COMPILEDFUNCTION)
-#define DUK_HOBJECT_CLEAR_NATIVEFUNCTION(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NATIVEFUNCTION)
-#define DUK_HOBJECT_CLEAR_BUFFEROBJECT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_BUFFEROBJECT)
-#define DUK_HOBJECT_CLEAR_THREAD(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_THREAD)
-#define DUK_HOBJECT_CLEAR_ARRAY_PART(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ARRAY_PART)
-#define DUK_HOBJECT_CLEAR_STRICT(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_STRICT)
-#define DUK_HOBJECT_CLEAR_NOTAIL(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NOTAIL)
-#define DUK_HOBJECT_CLEAR_NEWENV(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NEWENV)
-#define DUK_HOBJECT_CLEAR_NAMEBINDING(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_NAMEBINDING)
-#define DUK_HOBJECT_CLEAR_CREATEARGS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_CREATEARGS)
-#define DUK_HOBJECT_CLEAR_ENVRECCLOSED(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_ENVRECCLOSED)
-#define DUK_HOBJECT_CLEAR_EXOTIC_ARRAY(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARRAY)
-#define DUK_HOBJECT_CLEAR_EXOTIC_STRINGOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ)
-#define DUK_HOBJECT_CLEAR_EXOTIC_ARGUMENTS(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS)
-#define DUK_HOBJECT_CLEAR_EXOTIC_DUKFUNC(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC)
-#define DUK_HOBJECT_CLEAR_EXOTIC_PROXYOBJ(h) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(h)->hdr, DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ)
-
-/* flags used for property attributes in duk_propdesc and packed flags */
-#define DUK_PROPDESC_FLAG_WRITABLE (1 << 0) /* E5 Section 8.6.1 */
-#define DUK_PROPDESC_FLAG_ENUMERABLE (1 << 1) /* E5 Section 8.6.1 */
-#define DUK_PROPDESC_FLAG_CONFIGURABLE (1 << 2) /* E5 Section 8.6.1 */
-#define DUK_PROPDESC_FLAG_ACCESSOR (1 << 3) /* accessor */
-#define DUK_PROPDESC_FLAG_VIRTUAL (1 << 4) /* property is virtual: used in duk_propdesc, never stored
- * (used by e.g. buffer virtual properties)
- */
-#define DUK_PROPDESC_FLAGS_MASK (DUK_PROPDESC_FLAG_WRITABLE | \
- DUK_PROPDESC_FLAG_ENUMERABLE | \
- DUK_PROPDESC_FLAG_CONFIGURABLE | \
- DUK_PROPDESC_FLAG_ACCESSOR)
-
-/* additional flags which are passed in the same flags argument as property
- * flags but are not stored in object properties.
- */
-#define DUK_PROPDESC_FLAG_NO_OVERWRITE (1 << 4) /* internal define property: skip write silently if exists */
-
-/* convenience */
-#define DUK_PROPDESC_FLAGS_NONE 0
-#define DUK_PROPDESC_FLAGS_W (DUK_PROPDESC_FLAG_WRITABLE)
-#define DUK_PROPDESC_FLAGS_E (DUK_PROPDESC_FLAG_ENUMERABLE)
-#define DUK_PROPDESC_FLAGS_C (DUK_PROPDESC_FLAG_CONFIGURABLE)
-#define DUK_PROPDESC_FLAGS_WE (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_ENUMERABLE)
-#define DUK_PROPDESC_FLAGS_WC (DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE)
-#define DUK_PROPDESC_FLAGS_EC (DUK_PROPDESC_FLAG_ENUMERABLE | DUK_PROPDESC_FLAG_CONFIGURABLE)
-#define DUK_PROPDESC_FLAGS_WEC (DUK_PROPDESC_FLAG_WRITABLE | \
- DUK_PROPDESC_FLAG_ENUMERABLE | \
- DUK_PROPDESC_FLAG_CONFIGURABLE)
-
-/* flags for duk_hobject_get_own_propdesc() and variants */
-#define DUK_GETDESC_FLAG_PUSH_VALUE (1 << 0) /* push value to stack */
-#define DUK_GETDESC_FLAG_IGNORE_PROTOLOOP (1 << 1) /* don't throw for prototype loop */
-
-/*
- * Macro for object validity check
- *
- * Assert for currently guaranteed relations between flags, for instance.
- */
-
-#define DUK_ASSERT_HOBJECT_VALID(h) do { \
- DUK_ASSERT((h) != NULL); \
- DUK_ASSERT(!DUK_HOBJECT_IS_CALLABLE((h)) || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FUNCTION); \
- DUK_ASSERT(!DUK_HOBJECT_IS_BUFFEROBJECT((h)) || \
- (DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_BUFFER || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_ARRAYBUFFER || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_DATAVIEW || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT8ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT8ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT16ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT16ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_INT32ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_UINT32ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FLOAT32ARRAY || \
- DUK_HOBJECT_GET_CLASS_NUMBER((h)) == DUK_HOBJECT_CLASS_FLOAT64ARRAY)); \
- } while (0)
-
-/*
- * Macros to access the 'props' allocation.
- */
-
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HOBJECT_GET_PROPS(heap,h) \
- ((duk_uint8_t *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (h))->h_extra16))
-#define DUK_HOBJECT_SET_PROPS(heap,h,x) do { \
- ((duk_heaphdr *) (h))->h_extra16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \
- } while (0)
-#else
-#define DUK_HOBJECT_GET_PROPS(heap,h) \
- ((h)->props)
-#define DUK_HOBJECT_SET_PROPS(heap,h,x) do { \
- (h)->props = (duk_uint8_t *) (x); \
- } while (0)
-#endif
-
-#if defined(DUK_USE_HOBJECT_LAYOUT_1)
-/* LAYOUT 1 */
-#define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \
- ((duk_hstring **) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) \
- ))
-#define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \
- ((duk_propvalue *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_hstring *) \
- ))
-#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \
- ((duk_uint8_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)) \
- ))
-#define DUK_HOBJECT_A_GET_BASE(heap,h) \
- ((duk_tval *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) \
- ))
-#define DUK_HOBJECT_H_GET_BASE(heap,h) \
- ((duk_uint32_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \
- DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \
- ))
-#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \
- ( \
- (n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \
- (n_arr) * sizeof(duk_tval) + \
- (n_hash) * sizeof(duk_uint32_t) \
- )
-#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \
- (set_e_k) = (duk_hstring **) (void *) (p_base); \
- (set_e_pv) = (duk_propvalue *) (void *) ((set_e_k) + (n_ent)); \
- (set_e_f) = (duk_uint8_t *) (void *) ((set_e_pv) + (n_ent)); \
- (set_a) = (duk_tval *) (void *) ((set_e_f) + (n_ent)); \
- (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \
- } while (0)
-#elif defined(DUK_USE_HOBJECT_LAYOUT_2)
-/* LAYOUT 2 */
-#if (DUK_USE_ALIGN_BY == 4)
-#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((4 - (e_sz)) & 0x03)
-#elif (DUK_USE_ALIGN_BY == 8)
-#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) ((8 - (e_sz)) & 0x07)
-#elif (DUK_USE_ALIGN_BY == 1)
-#define DUK_HOBJECT_E_FLAG_PADDING(e_sz) 0
-#else
-#error invalid DUK_USE_ALIGN_BY
-#endif
-#define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \
- ((duk_hstring **) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) \
- ))
-#define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \
- ((duk_propvalue *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) \
- ))
-#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \
- ((duk_uint8_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue)) \
- ))
-#define DUK_HOBJECT_A_GET_BASE(heap,h) \
- ((duk_tval *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \
- DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))) \
- ))
-#define DUK_HOBJECT_H_GET_BASE(heap,h) \
- ((duk_uint32_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \
- DUK_HOBJECT_E_FLAG_PADDING(DUK_HOBJECT_GET_ESIZE((h))) + \
- DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \
- ))
-#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \
- ( \
- (n_ent) * (sizeof(duk_hstring *) + sizeof(duk_propvalue) + sizeof(duk_uint8_t)) + \
- DUK_HOBJECT_E_FLAG_PADDING((n_ent)) + \
- (n_arr) * sizeof(duk_tval) + \
- (n_hash) * sizeof(duk_uint32_t) \
- )
-#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \
- (set_e_pv) = (duk_propvalue *) (void *) (p_base); \
- (set_e_k) = (duk_hstring **) (void *) ((set_e_pv) + (n_ent)); \
- (set_e_f) = (duk_uint8_t *) (void *) ((set_e_k) + (n_ent)); \
- (set_a) = (duk_tval *) (void *) (((duk_uint8_t *) (set_e_f)) + \
- sizeof(duk_uint8_t) * (n_ent) + \
- DUK_HOBJECT_E_FLAG_PADDING((n_ent))); \
- (set_h) = (duk_uint32_t *) (void *) ((set_a) + (n_arr)); \
- } while (0)
-#elif defined(DUK_USE_HOBJECT_LAYOUT_3)
-/* LAYOUT 3 */
-#define DUK_HOBJECT_E_GET_KEY_BASE(heap,h) \
- ((duk_hstring **) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) + \
- DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \
- ))
-#define DUK_HOBJECT_E_GET_VALUE_BASE(heap,h) \
- ((duk_propvalue *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) \
- ))
-#define DUK_HOBJECT_E_GET_FLAGS_BASE(heap,h) \
- ((duk_uint8_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \
- DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) + \
- DUK_HOBJECT_GET_HSIZE((h)) * sizeof(duk_uint32_t) \
- ))
-#define DUK_HOBJECT_A_GET_BASE(heap,h) \
- ((duk_tval *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * sizeof(duk_propvalue) \
- ))
-#define DUK_HOBJECT_H_GET_BASE(heap,h) \
- ((duk_uint32_t *) (void *) ( \
- DUK_HOBJECT_GET_PROPS((heap), (h)) + \
- DUK_HOBJECT_GET_ESIZE((h)) * (sizeof(duk_propvalue) + sizeof(duk_hstring *)) + \
- DUK_HOBJECT_GET_ASIZE((h)) * sizeof(duk_tval) \
- ))
-#define DUK_HOBJECT_P_COMPUTE_SIZE(n_ent,n_arr,n_hash) \
- ( \
- (n_ent) * (sizeof(duk_propvalue) + sizeof(duk_hstring *) + sizeof(duk_uint8_t)) + \
- (n_arr) * sizeof(duk_tval) + \
- (n_hash) * sizeof(duk_uint32_t) \
- )
-#define DUK_HOBJECT_P_SET_REALLOC_PTRS(p_base,set_e_k,set_e_pv,set_e_f,set_a,set_h,n_ent,n_arr,n_hash) do { \
- (set_e_pv) = (duk_propvalue *) (void *) (p_base); \
- (set_a) = (duk_tval *) (void *) ((set_e_pv) + (n_ent)); \
- (set_e_k) = (duk_hstring **) (void *) ((set_a) + (n_arr)); \
- (set_h) = (duk_uint32_t *) (void *) ((set_e_k) + (n_ent)); \
- (set_e_f) = (duk_uint8_t *) (void *) ((set_h) + (n_hash)); \
- } while (0)
-#else
-#error invalid hobject layout defines
-#endif /* hobject property layout */
-
-#define DUK_HOBJECT_P_ALLOC_SIZE(h) \
- DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE((h)), DUK_HOBJECT_GET_ASIZE((h)), DUK_HOBJECT_GET_HSIZE((h)))
-
-#define DUK_HOBJECT_E_GET_KEY(heap,h,i) (DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_E_GET_KEY_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_KEY_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_E_GET_VALUE(heap,h,i) (DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_E_GET_VALUE_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_E_GET_VALUE_TVAL(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v)
-#define DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v)
-#define DUK_HOBJECT_E_GET_VALUE_GETTER(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get)
-#define DUK_HOBJECT_E_GET_VALUE_GETTER_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get)
-#define DUK_HOBJECT_E_GET_VALUE_SETTER(heap,h,i) (DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set)
-#define DUK_HOBJECT_E_GET_VALUE_SETTER_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set)
-#define DUK_HOBJECT_E_GET_FLAGS(heap,h,i) (DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_E_GET_FLAGS_PTR(heap,h,i) (&DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_A_GET_VALUE(heap,h,i) (DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_A_GET_VALUE_PTR(heap,h,i) (&DUK_HOBJECT_A_GET_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_H_GET_INDEX(heap,h,i) (DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)])
-#define DUK_HOBJECT_H_GET_INDEX_PTR(heap,h,i) (&DUK_HOBJECT_H_GET_BASE((heap), (h))[(i)])
-
-#define DUK_HOBJECT_E_SET_KEY(heap,h,i,k) do { \
- DUK_HOBJECT_E_GET_KEY((heap), (h), (i)) = (k); \
- } while (0)
-#define DUK_HOBJECT_E_SET_VALUE(heap,h,i,v) do { \
- DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)) = (v); \
- } while (0)
-#define DUK_HOBJECT_E_SET_VALUE_TVAL(heap,h,i,v) do { \
- DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).v = (v); \
- } while (0)
-#define DUK_HOBJECT_E_SET_VALUE_GETTER(heap,h,i,v) do { \
- DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.get = (v); \
- } while (0)
-#define DUK_HOBJECT_E_SET_VALUE_SETTER(heap,h,i,v) do { \
- DUK_HOBJECT_E_GET_VALUE((heap), (h), (i)).a.set = (v); \
- } while (0)
-#define DUK_HOBJECT_E_SET_FLAGS(heap,h,i,f) do { \
- DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) = (duk_uint8_t) (f); \
- } while (0)
-#define DUK_HOBJECT_A_SET_VALUE(heap,h,i,v) do { \
- DUK_HOBJECT_A_GET_VALUE((heap), (h), (i)) = (v); \
- } while (0)
-#define DUK_HOBJECT_A_SET_VALUE_TVAL(heap,h,i,v) \
- DUK_HOBJECT_A_SET_VALUE((heap), (h), (i), (v)) /* alias for above */
-#define DUK_HOBJECT_H_SET_INDEX(heap,h,i,v) do { \
- DUK_HOBJECT_H_GET_INDEX((heap), (h), (i)) = (v); \
- } while (0)
-
-#define DUK_HOBJECT_E_SET_FLAG_BITS(heap,h,i,mask) do { \
- DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] |= (mask); \
- } while (0)
-
-#define DUK_HOBJECT_E_CLEAR_FLAG_BITS(heap,h,i,mask) do { \
- DUK_HOBJECT_E_GET_FLAGS_BASE((heap), (h))[(i)] &= ~(mask); \
- } while (0)
-
-#define DUK_HOBJECT_E_SLOT_IS_WRITABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_WRITABLE) != 0)
-#define DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ENUMERABLE) != 0)
-#define DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0)
-#define DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap,h,i) ((DUK_HOBJECT_E_GET_FLAGS((heap), (h), (i)) & DUK_PROPDESC_FLAG_ACCESSOR) != 0)
-
-#define DUK_HOBJECT_E_SLOT_SET_WRITABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_WRITABLE)
-#define DUK_HOBJECT_E_SLOT_SET_ENUMERABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ENUMERABLE)
-#define DUK_HOBJECT_E_SLOT_SET_CONFIGURABLE(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_CONFIGURABLE)
-#define DUK_HOBJECT_E_SLOT_SET_ACCESSOR(heap,h,i) DUK_HOBJECT_E_SET_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ACCESSOR)
-
-#define DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_WRITABLE)
-#define DUK_HOBJECT_E_SLOT_CLEAR_ENUMERABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ENUMERABLE)
-#define DUK_HOBJECT_E_SLOT_CLEAR_CONFIGURABLE(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_CONFIGURABLE)
-#define DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(heap,h,i) DUK_HOBJECT_E_CLEAR_FLAG_BITS((heap), (h), (i),DUK_PROPDESC_FLAG_ACCESSOR)
-
-#define DUK_PROPDESC_IS_WRITABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_WRITABLE) != 0)
-#define DUK_PROPDESC_IS_ENUMERABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_ENUMERABLE) != 0)
-#define DUK_PROPDESC_IS_CONFIGURABLE(p) (((p)->flags & DUK_PROPDESC_FLAG_CONFIGURABLE) != 0)
-#define DUK_PROPDESC_IS_ACCESSOR(p) (((p)->flags & DUK_PROPDESC_FLAG_ACCESSOR) != 0)
-
-#define DUK_HOBJECT_HASHIDX_UNUSED 0xffffffffUL
-#define DUK_HOBJECT_HASHIDX_DELETED 0xfffffffeUL
-
-/*
- * Macros for accessing size fields
- */
-
-#if defined(DUK_USE_OBJSIZES16)
-#define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size16)
-#define DUK_HOBJECT_SET_ESIZE(h,v) do { (h)->e_size16 = (v); } while (0)
-#define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next16)
-#define DUK_HOBJECT_SET_ENEXT(h,v) do { (h)->e_next16 = (v); } while (0)
-#define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next16++)
-#define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size16)
-#define DUK_HOBJECT_SET_ASIZE(h,v) do { (h)->a_size16 = (v); } while (0)
-#if defined(DUK_USE_HOBJECT_HASH_PART)
-#define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size16)
-#define DUK_HOBJECT_SET_HSIZE(h,v) do { (h)->h_size16 = (v); } while (0)
-#else
-#define DUK_HOBJECT_GET_HSIZE(h) 0
-#define DUK_HOBJECT_SET_HSIZE(h,v) do { DUK_ASSERT((v) == 0); } while (0)
-#endif
-#else
-#define DUK_HOBJECT_GET_ESIZE(h) ((h)->e_size)
-#define DUK_HOBJECT_SET_ESIZE(h,v) do { (h)->e_size = (v); } while (0)
-#define DUK_HOBJECT_GET_ENEXT(h) ((h)->e_next)
-#define DUK_HOBJECT_SET_ENEXT(h,v) do { (h)->e_next = (v); } while (0)
-#define DUK_HOBJECT_POSTINC_ENEXT(h) ((h)->e_next++)
-#define DUK_HOBJECT_GET_ASIZE(h) ((h)->a_size)
-#define DUK_HOBJECT_SET_ASIZE(h,v) do { (h)->a_size = (v); } while (0)
-#if defined(DUK_USE_HOBJECT_HASH_PART)
-#define DUK_HOBJECT_GET_HSIZE(h) ((h)->h_size)
-#define DUK_HOBJECT_SET_HSIZE(h,v) do { (h)->h_size = (v); } while (0)
-#else
-#define DUK_HOBJECT_GET_HSIZE(h) 0
-#define DUK_HOBJECT_SET_HSIZE(h,v) do { DUK_ASSERT((v) == 0); } while (0)
-#endif
-#endif
-
-/*
- * Misc
- */
-
-/* Maximum prototype traversal depth. Sanity limit which handles e.g.
- * prototype loops (even complex ones like 1->2->3->4->2->3->4->2->3->4).
- */
-#define DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY 10000L
-
-/* Maximum traversal depth for "bound function" chains. */
-#define DUK_HOBJECT_BOUND_CHAIN_SANITY 10000L
-
-/*
- * Ecmascript [[Class]]
- */
-
-/* range check not necessary because all 4-bit values are mapped */
-#define DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(n) duk_class_number_to_stridx[(n)]
-
-#define DUK_HOBJECT_GET_CLASS_STRING(heap,h) \
- DUK_HEAP_GET_STRING( \
- (heap), \
- DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(DUK_HOBJECT_GET_CLASS_NUMBER((h))) \
- )
-
-/*
- * Macros for property handling
- */
-
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HOBJECT_GET_PROTOTYPE(heap,h) \
- ((duk_hobject *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->prototype16))
-#define DUK_HOBJECT_SET_PROTOTYPE(heap,h,x) do { \
- (h)->prototype16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (x)); \
- } while (0)
-#else
-#define DUK_HOBJECT_GET_PROTOTYPE(heap,h) \
- ((h)->prototype)
-#define DUK_HOBJECT_SET_PROTOTYPE(heap,h,x) do { \
- (h)->prototype = (x); \
- } while (0)
-#endif
-
-/* note: this updates refcounts */
-#define DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr,h,p) duk_hobject_set_prototype_updref((thr), (h), (p))
-
-/*
- * Resizing and hash behavior
- */
-
-/* Sanity limit on max number of properties (allocated, not necessarily used).
- * This is somewhat arbitrary, but if we're close to 2**32 properties some
- * algorithms will fail (e.g. hash size selection, next prime selection).
- * Also, we use negative array/entry table indices to indicate 'not found',
- * so anything above 0x80000000 will cause trouble now.
- */
-#if defined(DUK_USE_OBJSIZES16)
-#define DUK_HOBJECT_MAX_PROPERTIES 0x0000ffffUL
-#else
-#define DUK_HOBJECT_MAX_PROPERTIES 0x7fffffffUL /* 2**31-1 ~= 2G properties */
-#endif
-
-/* higher value conserves memory; also note that linear scan is cache friendly */
-#define DUK_HOBJECT_E_USE_HASH_LIMIT 32
-
-/* hash size relative to entries size: for value X, approx. hash_prime(e_size + e_size / X) */
-#define DUK_HOBJECT_H_SIZE_DIVISOR 4 /* hash size approx. 1.25 times entries size */
-
-/* if new_size < L * old_size, resize without abandon check; L = 3-bit fixed point, e.g. 9 -> 9/8 = 112.5% */
-#define DUK_HOBJECT_A_FAST_RESIZE_LIMIT 9 /* 112.5%, i.e. new size less than 12.5% higher -> fast resize */
-
-/* if density < L, abandon array part, L = 3-bit fixed point, e.g. 2 -> 2/8 = 25% */
-/* limit is quite low: one array entry is 8 bytes, one normal entry is 4+1+8+4 = 17 bytes (with hash entry) */
-#define DUK_HOBJECT_A_ABANDON_LIMIT 2 /* 25%, i.e. less than 25% used -> abandon */
-
-/* internal align target for props allocation, must be 2*n for some n */
-#if (DUK_USE_ALIGN_BY == 4)
-#define DUK_HOBJECT_ALIGN_TARGET 4
-#elif (DUK_USE_ALIGN_BY == 8)
-#define DUK_HOBJECT_ALIGN_TARGET 8
-#elif (DUK_USE_ALIGN_BY == 1)
-#define DUK_HOBJECT_ALIGN_TARGET 1
-#else
-#error invalid DUK_USE_ALIGN_BY
-#endif
-
-/* controls for minimum entry part growth */
-#define DUK_HOBJECT_E_MIN_GROW_ADD 16
-#define DUK_HOBJECT_E_MIN_GROW_DIVISOR 8 /* 2^3 -> 1/8 = 12.5% min growth */
-
-/* controls for minimum array part growth */
-#define DUK_HOBJECT_A_MIN_GROW_ADD 16
-#define DUK_HOBJECT_A_MIN_GROW_DIVISOR 8 /* 2^3 -> 1/8 = 12.5% min growth */
-
-/* probe sequence */
-#define DUK_HOBJECT_HASH_INITIAL(hash,h_size) ((hash) % (h_size))
-#define DUK_HOBJECT_HASH_PROBE_STEP(hash) DUK_UTIL_GET_HASH_PROBE_STEP((hash))
-
-/*
- * PC-to-line constants
- */
-
-#define DUK_PC2LINE_SKIP 64
-
-/* maximum length for a SKIP-1 diffstream: 35 bits per entry, rounded up to bytes */
-#define DUK_PC2LINE_MAX_DIFF_LENGTH (((DUK_PC2LINE_SKIP - 1) * 35 + 7) / 8)
-
-/*
- * Struct defs
- */
-
-struct duk_propaccessor {
- duk_hobject *get;
- duk_hobject *set;
-};
-
-union duk_propvalue {
- /* The get/set pointers could be 16-bit pointer compressed but it
- * would make no difference on 32-bit platforms because duk_tval is
- * 8 bytes or more anyway.
- */
- duk_tval v;
- duk_propaccessor a;
-};
-
-struct duk_propdesc {
- /* read-only values 'lifted' for ease of use */
- duk_small_int_t flags;
- duk_hobject *get;
- duk_hobject *set;
-
- /* for updating (all are set to < 0 for virtual properties) */
- duk_int_t e_idx; /* prop index in 'entry part', < 0 if not there */
- duk_int_t h_idx; /* prop index in 'hash part', < 0 if not there */
- duk_int_t a_idx; /* prop index in 'array part', < 0 if not there */
-};
-
-struct duk_hobject {
- duk_heaphdr hdr;
-
- /*
- * 'props' contains {key,value,flags} entries, optional array entries, and
- * an optional hash lookup table for non-array entries in a single 'sliced'
- * allocation. There are several layout options, which differ slightly in
- * generated code size/speed and alignment/padding; duk_features.h selects
- * the layout used.
- *
- * Layout 1 (DUK_USE_HOBJECT_LAYOUT_1):
- *
- * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable)
- * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable)
- * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable)
- * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable)
- * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size),
- * 0xffffffffUL = unused, 0xfffffffeUL = deleted
- *
- * Layout 2 (DUK_USE_HOBJECT_LAYOUT_2):
- *
- * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable)
- * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable)
- * e_size * sizeof(duk_uint8_t) + pad bytes of entry flags (e_next gc reachable)
- * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable)
- * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size),
- * 0xffffffffUL = unused, 0xfffffffeUL = deleted
- *
- * Layout 3 (DUK_USE_HOBJECT_LAYOUT_3):
- *
- * e_size * sizeof(duk_propvalue) bytes of entry values (e_next gc reachable)
- * a_size * sizeof(duk_tval) bytes of (opt) array values (plain only) (all gc reachable)
- * e_size * sizeof(duk_hstring *) bytes of entry keys (e_next gc reachable)
- * h_size * sizeof(duk_uint32_t) bytes of (opt) hash indexes to entries (e_size),
- * 0xffffffffUL = unused, 0xfffffffeUL = deleted
- * e_size * sizeof(duk_uint8_t) bytes of entry flags (e_next gc reachable)
- *
- * In layout 1, the 'e_next' count is rounded to 4 or 8 on platforms
- * requiring 4 or 8 byte alignment. This ensures proper alignment
- * for the entries, at the cost of memory footprint. However, it's
- * probably preferable to use another layout on such platforms instead.
- *
- * In layout 2, the key and value parts are swapped to avoid padding
- * the key array on platforms requiring alignment by 8. The flags part
- * is padded to get alignment for array entries. The 'e_next' count does
- * not need to be rounded as in layout 1.
- *
- * In layout 3, entry values and array values are always aligned properly,
- * and assuming pointers are at most 8 bytes, so are the entry keys. Hash
- * indices will be properly aligned (assuming pointers are at least 4 bytes).
- * Finally, flags don't need additional alignment. This layout provides
- * compact allocations without padding (even on platforms with alignment
- * requirements) at the cost of a bit slower lookups.
- *
- * Objects with few keys don't have a hash index; keys are looked up linearly,
- * which is cache efficient because the keys are consecutive. Larger objects
- * have a hash index part which contains integer indexes to the entries part.
- *
- * A single allocation reduces memory allocation overhead but requires more
- * work when any part needs to be resized. A sliced allocation for entries
- * makes linear key matching faster on most platforms (more locality) and
- * skimps on flags size (which would be followed by 3 bytes of padding in
- * most architectures if entries were placed in a struct).
- *
- * 'props' also contains internal properties distinguished with a non-BMP
- * prefix. Often used properties should be placed early in 'props' whenever
- * possible to make accessing them as fast a possible.
- */
-
-#if defined(DUK_USE_HEAPPTR16)
- /* Located in duk_heaphdr h_extra16. Subclasses of duk_hobject (like
- * duk_hcompiledfunction) are not free to use h_extra16 for this reason.
- */
-#else
- duk_uint8_t *props;
-#endif
-
- /* prototype: the only internal property lifted outside 'e' as it is so central */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t prototype16;
-#else
- duk_hobject *prototype;
-#endif
-
-#if defined(DUK_USE_OBJSIZES16)
- duk_uint16_t e_size16;
- duk_uint16_t e_next16;
- duk_uint16_t a_size16;
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- duk_uint16_t h_size16;
-#endif
-#else
- duk_uint32_t e_size; /* entry part size */
- duk_uint32_t e_next; /* index for next new key ([0,e_next[ are gc reachable) */
- duk_uint32_t a_size; /* array part size (entirely gc reachable) */
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- duk_uint32_t h_size; /* hash part size or 0 if unused */
-#endif
-#endif
-};
-
-/*
- * Exposed data
- */
-
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL duk_uint8_t duk_class_number_to_stridx[32];
-#endif /* !DUK_SINGLE_FILE */
-
-/*
- * Prototypes
- */
-
-/* alloc and init */
-DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc(duk_heap *heap, duk_uint_t hobject_flags);
-#if 0 /* unused */
-DUK_INTERNAL_DECL duk_hobject *duk_hobject_alloc_checked(duk_hthread *thr, duk_uint_t hobject_flags);
-#endif
-DUK_INTERNAL_DECL duk_hcompiledfunction *duk_hcompiledfunction_alloc(duk_heap *heap, duk_uint_t hobject_flags);
-DUK_INTERNAL_DECL duk_hnativefunction *duk_hnativefunction_alloc(duk_heap *heap, duk_uint_t hobject_flags);
-DUK_INTERNAL duk_hbufferobject *duk_hbufferobject_alloc(duk_heap *heap, duk_uint_t hobject_flags);
-DUK_INTERNAL_DECL duk_hthread *duk_hthread_alloc(duk_heap *heap, duk_uint_t hobject_flags);
-
-/* low-level property functions */
-DUK_INTERNAL_DECL void duk_hobject_find_existing_entry(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *e_idx, duk_int_t *h_idx);
-DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_hstring *key);
-DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_entry_tval_ptr_and_attrs(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *out_attrs);
-DUK_INTERNAL_DECL duk_tval *duk_hobject_find_existing_array_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_uarridx_t i);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_get_own_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags);
-
-/* XXX: when optimizing for guaranteed property slots, use a guaranteed
- * slot for internal value; this call can then access it directly.
- */
-#define duk_hobject_get_internal_value_tval_ptr(heap,obj) \
- duk_hobject_find_existing_entry_tval_ptr((heap), (obj), DUK_HEAP_STRING_INT_VALUE((heap)))
-
-/* core property functions */
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_tval *tv_val, duk_bool_t throw_flag);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_bool_t throw_flag);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key);
-
-/* internal property functions */
-#define DUK_DELPROP_FLAG_THROW (1 << 0)
-#define DUK_DELPROP_FLAG_FORCE (1 << 1)
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_hasprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key);
-DUK_INTERNAL_DECL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags);
-DUK_INTERNAL_DECL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, duk_hobject *obj, duk_uarridx_t arr_idx, duk_small_uint_t flags);
-DUK_INTERNAL_DECL void duk_hobject_define_accessor_internal(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_hobject *getter, duk_hobject *setter, duk_small_uint_t propflags);
-DUK_INTERNAL_DECL void duk_hobject_set_length(duk_hthread *thr, duk_hobject *obj, duk_uint32_t length); /* XXX: duk_uarridx_t? */
-DUK_INTERNAL_DECL void duk_hobject_set_length_zero(duk_hthread *thr, duk_hobject *obj);
-DUK_INTERNAL_DECL duk_uint32_t duk_hobject_get_length(duk_hthread *thr, duk_hobject *obj); /* XXX: duk_uarridx_t? */
-
-/* helpers for defineProperty() and defineProperties() */
-DUK_INTERNAL_DECL
-void duk_hobject_prepare_property_descriptor(duk_context *ctx,
- duk_idx_t idx_in,
- duk_uint_t *out_defprop_flags,
- duk_idx_t *out_idx_value,
- duk_hobject **out_getter,
- duk_hobject **out_setter);
-DUK_INTERNAL_DECL
-void duk_hobject_define_property_helper(duk_context *ctx,
- duk_uint_t defprop_flags,
- duk_hobject *obj,
- duk_hstring *key,
- duk_idx_t idx_value,
- duk_hobject *get,
- duk_hobject *set);
-
-/* Object built-in methods */
-DUK_INTERNAL_DECL duk_ret_t duk_hobject_object_get_own_property_descriptor(duk_context *ctx);
-DUK_INTERNAL_DECL void duk_hobject_object_seal_freeze_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_freeze);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_frozen);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_object_ownprop_helper(duk_context *ctx, duk_small_uint_t required_desc_flags);
-
-/* internal properties */
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobject *obj, duk_tval *tv);
-DUK_INTERNAL_DECL duk_hstring *duk_hobject_get_internal_value_string(duk_heap *heap, duk_hobject *obj);
-
-/* hobject management functions */
-DUK_INTERNAL_DECL void duk_hobject_compact_props(duk_hthread *thr, duk_hobject *obj);
-
-/* ES6 proxy */
-#if defined(DUK_USE_ES6_PROXY)
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_proxy_check(duk_hthread *thr, duk_hobject *obj, duk_hobject **out_target, duk_hobject **out_handler);
-DUK_INTERNAL_DECL duk_hobject *duk_hobject_resolve_proxy_target(duk_hthread *thr, duk_hobject *obj);
-#endif
-
-/* enumeration */
-DUK_INTERNAL_DECL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint_t enum_flags);
-DUK_INTERNAL_DECL duk_ret_t duk_hobject_get_enumerated_keys(duk_context *ctx, duk_small_uint_t enum_flags);
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t get_value);
-
-/* macros */
-DUK_INTERNAL_DECL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p);
-
-/* finalization */
-DUK_INTERNAL_DECL void duk_hobject_run_finalizer(duk_hthread *thr, duk_hobject *obj);
-
-/* pc2line */
-#if defined(DUK_USE_PC2LINE)
-DUK_INTERNAL_DECL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr *instrs, duk_uint_fast32_t length);
-DUK_INTERNAL_DECL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_idx_t idx_func, duk_uint_fast32_t pc);
-#endif
-
-/* misc */
-DUK_INTERNAL_DECL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, duk_hobject *h, duk_hobject *p, duk_bool_t ignore_loop);
-
-#endif /* DUK_HOBJECT_H_INCLUDED */
-#line 1 "duk_hcompiledfunction.h"
-/*
- * Heap compiled function (Ecmascript function) representation.
- *
- * There is a single data buffer containing the Ecmascript function's
- * bytecode, constants, and inner functions.
- */
-
-#ifndef DUK_HCOMPILEDFUNCTION_H_INCLUDED
-#define DUK_HCOMPILEDFUNCTION_H_INCLUDED
-
-/*
- * Field accessor macros
- */
-
-/* XXX: casts could be improved, especially for GET/SET DATA */
-
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HCOMPILEDFUNCTION_GET_DATA(heap,h) \
- ((duk_hbuffer_fixed *) (void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->data16))
-#define DUK_HCOMPILEDFUNCTION_SET_DATA(heap,h,v) do { \
- (h)->data16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \
- } while (0)
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS(heap,h) \
- ((duk_hobject **) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->funcs16)))
-#define DUK_HCOMPILEDFUNCTION_SET_FUNCS(heap,h,v) do { \
- (h)->funcs16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \
- } while (0)
-#define DUK_HCOMPILEDFUNCTION_GET_BYTECODE(heap,h) \
- ((duk_instr_t *) (void *) (DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (h)->bytecode16)))
-#define DUK_HCOMPILEDFUNCTION_SET_BYTECODE(heap,h,v) do { \
- (h)->bytecode16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \
- } while (0)
-#else
-#define DUK_HCOMPILEDFUNCTION_GET_DATA(heap,h) \
- ((duk_hbuffer_fixed *) (void *) (h)->data)
-#define DUK_HCOMPILEDFUNCTION_SET_DATA(heap,h,v) do { \
- (h)->data = (duk_hbuffer *) (v); \
- } while (0)
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS(heap,h) \
- ((h)->funcs)
-#define DUK_HCOMPILEDFUNCTION_SET_FUNCS(heap,h,v) do { \
- (h)->funcs = (v); \
- } while (0)
-#define DUK_HCOMPILEDFUNCTION_GET_BYTECODE(heap,h) \
- ((h)->bytecode)
-#define DUK_HCOMPILEDFUNCTION_SET_BYTECODE(heap,h,v) do { \
- (h)->bytecode = (v); \
- } while (0)
-#endif
-
-/*
- * Accessor macros for function specific data areas
- */
-
-/* Note: assumes 'data' is always a fixed buffer */
-#define DUK_HCOMPILEDFUNCTION_GET_BUFFER_BASE(heap,h) \
- DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), DUK_HCOMPILEDFUNCTION_GET_DATA((heap), (h)))
-
-#define DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap,h) \
- ((duk_tval *) (void *) DUK_HCOMPILEDFUNCTION_GET_BUFFER_BASE((heap), (h)))
-
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap,h) \
- DUK_HCOMPILEDFUNCTION_GET_FUNCS((heap), (h))
-
-#define DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(heap,h) \
- DUK_HCOMPILEDFUNCTION_GET_BYTECODE((heap), (h))
-
-#define DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(heap,h) \
- ((duk_tval *) (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS((heap), (h)))
-
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(heap,h) \
- ((duk_hobject **) (void *) DUK_HCOMPILEDFUNCTION_GET_BYTECODE((heap), (h)))
-
-/* XXX: double evaluation of DUK_HCOMPILEDFUNCTION_GET_DATA() */
-#define DUK_HCOMPILEDFUNCTION_GET_CODE_END(heap,h) \
- ((duk_instr_t *) (void *) (DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), DUK_HCOMPILEDFUNCTION_GET_DATA((heap), (h))) + \
- DUK_HBUFFER_GET_SIZE((duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA((heap), h))))
-
-#define DUK_HCOMPILEDFUNCTION_GET_CONSTS_SIZE(heap,h) \
- ( \
- (duk_size_t) \
- ( \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_END((heap), (h))) - \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE((heap), (h))) \
- ) \
- )
-
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS_SIZE(heap,h) \
- ( \
- (duk_size_t) \
- ( \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_END((heap), (h))) - \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE((heap), (h))) \
- ) \
- )
-
-#define DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE(heap,h) \
- ( \
- (duk_size_t) \
- ( \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_CODE_END((heap),(h))) - \
- ((const duk_uint8_t *) DUK_HCOMPILEDFUNCTION_GET_CODE_BASE((heap),(h))) \
- ) \
- )
-
-#define DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(heap,h) \
- ((duk_size_t) (DUK_HCOMPILEDFUNCTION_GET_CONSTS_SIZE((heap), (h)) / sizeof(duk_tval)))
-
-#define DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(heap,h) \
- ((duk_size_t) (DUK_HCOMPILEDFUNCTION_GET_FUNCS_SIZE((heap), (h)) / sizeof(duk_hobject *)))
-
-#define DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(heap,h) \
- ((duk_size_t) (DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE((heap), (h)) / sizeof(duk_instr_t)))
-
-
-/*
- * Main struct
- */
-
-struct duk_hcompiledfunction {
- /* shared object part */
- duk_hobject obj;
-
- /*
- * Pointers to function data area for faster access. Function
- * data is a buffer shared between all closures of the same
- * "template" function. The data buffer is always fixed (non-
- * dynamic, hence stable), with a layout as follows:
- *
- * constants (duk_tval)
- * inner functions (duk_hobject *)
- * bytecode (duk_instr_t)
- *
- * Note: bytecode end address can be computed from 'data' buffer
- * size. It is not strictly necessary functionally, assuming
- * bytecode never jumps outside its allocated area. However,
- * it's a safety/robustness feature for avoiding the chance of
- * executing random data as bytecode due to a compiler error.
- *
- * Note: values in the data buffer must be incref'd (they will
- * be decref'd on release) for every compiledfunction referring
- * to the 'data' element.
- */
-
- /* Data area, fixed allocation, stable data ptrs. */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t data16;
-#else
- duk_hbuffer *data;
-#endif
-
- /* No need for constants pointer (= same as data).
- *
- * When using 16-bit packing alignment to 4 is nice. 'funcs' will be
- * 4-byte aligned because 'constants' are duk_tvals. For now the
- * inner function pointers are not compressed, so that 'bytecode' will
- * also be 4-byte aligned.
- */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t funcs16;
- duk_uint16_t bytecode16;
-#else
- duk_hobject **funcs;
- duk_instr_t *bytecode;
-#endif
-
- /*
- * 'nregs' registers are allocated on function entry, at most 'nargs'
- * are initialized to arguments, and the rest to undefined. Arguments
- * above 'nregs' are not mapped to registers. All registers in the
- * active stack range must be initialized because they are GC reachable.
- * 'nargs' is needed so that if the function is given more than 'nargs'
- * arguments, the additional arguments do not 'clobber' registers
- * beyond 'nregs' which must be consistently initialized to undefined.
- *
- * Usually there is no need to know which registers are mapped to
- * local variables. Registers may be allocated to variable in any
- * way (even including gaps). However, a register-variable mapping
- * must be the same for the duration of the function execution and
- * the register cannot be used for anything else.
- *
- * When looking up variables by name, the '_Varmap' map is used.
- * When an activation closes, registers mapped to arguments are
- * copied into the environment record based on the same map. The
- * reverse map (from register to variable) is not currently needed
- * at run time, except for debugging, so it is not maintained.
- */
-
- duk_uint16_t nregs; /* regs to allocate */
- duk_uint16_t nargs; /* number of arguments allocated to regs */
-
- /*
- * Additional control information is placed into the object itself
- * as internal properties to avoid unnecessary fields for the
- * majority of functions. The compiler tries to omit internal
- * control fields when possible.
- *
- * Function templates:
- *
- * {
- * name: "func", // declaration, named function expressions
- * fileName: <debug info for creating nice errors>
- * _Varmap: { "arg1": 0, "arg2": 1, "varname": 2 },
- * _Formals: [ "arg1", "arg2" ],
- * _Source: "function func(arg1, arg2) { ... }",
- * _Pc2line: <debug info for pc-to-line mapping>,
- * }
- *
- * Function instances:
- *
- * {
- * length: 2,
- * prototype: { constructor: <func> },
- * caller: <thrower>,
- * arguments: <thrower>,
- * name: "func", // declaration, named function expressions
- * fileName: <debug info for creating nice errors>
- * _Varmap: { "arg1": 0, "arg2": 1, "varname": 2 },
- * _Formals: [ "arg1", "arg2" ],
- * _Source: "function func(arg1, arg2) { ... }",
- * _Pc2line: <debug info for pc-to-line mapping>,
- * _Varenv: <variable environment of closure>,
- * _Lexenv: <lexical environment of closure (if differs from _Varenv)>
- * }
- *
- * More detailed description of these properties can be found
- * in the documentation.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- /* Line number range for function. Needed during debugging to
- * determine active breakpoints.
- */
- duk_uint32_t start_line;
- duk_uint32_t end_line;
-#endif
-};
-
-#endif /* DUK_HCOMPILEDFUNCTION_H_INCLUDED */
-#line 1 "duk_hnativefunction.h"
-/*
- * Heap native function representation.
- */
-
-#ifndef DUK_HNATIVEFUNCTION_H_INCLUDED
-#define DUK_HNATIVEFUNCTION_H_INCLUDED
-
-#define DUK_HNATIVEFUNCTION_NARGS_VARARGS ((duk_int16_t) -1)
-#define DUK_HNATIVEFUNCTION_NARGS_MAX ((duk_int16_t) 0x7fff)
-
-struct duk_hnativefunction {
- /* shared object part */
- duk_hobject obj;
-
- duk_c_function func;
- duk_int16_t nargs;
- duk_int16_t magic;
-
- /* The 'magic' field allows an opaque 16-bit field to be accessed by the
- * Duktape/C function. This allows, for instance, the same native function
- * to be used for a set of very similar functions, with the 'magic' field
- * providing the necessary non-argument flags / values to guide the behavior
- * of the native function. The value is signed on purpose: it is easier to
- * convert a signed value to unsigned (simply AND with 0xffff) than vice
- * versa.
- *
- * Note: cannot place nargs/magic into the heaphdr flags, because
- * duk_hobject takes almost all flags already (and needs the spare).
- */
-};
-
-#endif /* DUK_HNATIVEFUNCTION_H_INCLUDED */
-#line 1 "duk_hbufferobject.h"
-/*
- * Heap Buffer object representation. Used for all Buffer variants.
- */
-
-#ifndef DUK_HBUFFEROBJECT_H_INCLUDED
-#define DUK_HBUFFEROBJECT_H_INCLUDED
-
-/* All element accessors are host endian now (driven by TypedArray spec). */
-#define DUK_HBUFFEROBJECT_ELEM_UINT8 0
-#define DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED 1
-#define DUK_HBUFFEROBJECT_ELEM_INT8 2
-#define DUK_HBUFFEROBJECT_ELEM_UINT16 3
-#define DUK_HBUFFEROBJECT_ELEM_INT16 4
-#define DUK_HBUFFEROBJECT_ELEM_UINT32 5
-#define DUK_HBUFFEROBJECT_ELEM_INT32 6
-#define DUK_HBUFFEROBJECT_ELEM_FLOAT32 7
-#define DUK_HBUFFEROBJECT_ELEM_FLOAT64 8
-#define DUK_HBUFFEROBJECT_ELEM_MAX 8
-
-#define DUK_ASSERT_HBUFFEROBJECT_VALID(h) do { \
- DUK_ASSERT((h) != NULL); \
- DUK_ASSERT((h)->shift <= 3); \
- DUK_ASSERT((h)->elem_type <= DUK_HBUFFEROBJECT_ELEM_MAX); \
- DUK_ASSERT(((h)->shift == 0 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8) || \
- ((h)->shift == 0 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED) || \
- ((h)->shift == 0 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_INT8) || \
- ((h)->shift == 1 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT16) || \
- ((h)->shift == 1 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_INT16) || \
- ((h)->shift == 2 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT32) || \
- ((h)->shift == 2 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_INT32) || \
- ((h)->shift == 2 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_FLOAT32) || \
- ((h)->shift == 3 && (h)->elem_type == DUK_HBUFFEROBJECT_ELEM_FLOAT64)); \
- DUK_ASSERT((h)->is_view == 0 || (h)->is_view == 1); \
- DUK_ASSERT(DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) (h))); \
- if ((h)->buf == NULL) { \
- DUK_ASSERT((h)->offset == 0); \
- DUK_ASSERT((h)->length == 0); \
- } else { \
- /* No assertions for offset or length; in particular, \
- * it's OK for length to be longer than underlying \
- * buffer. Just ensure they don't wrap when added. \
- */ \
- DUK_ASSERT((h)->offset + (h)->length >= (h)->offset); \
- } \
- } while (0)
-
-/* Get the current data pointer (caller must ensure buf != NULL) as a
- * duk_uint8_t ptr.
- */
-#define DUK_HBUFFEROBJECT_GET_SLICE_BASE(heap,h) \
- (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), \
- (((duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR((heap), (h)->buf)) + (h)->offset))
-
-/* True if slice is full, i.e. offset is zero and length covers the entire
- * buffer. This status may change independently of the duk_hbufferobject if
- * the underlying buffer is dynamic and changes without the hbufferobject
- * being changed.
- */
-#define DUK_HBUFFEROBJECT_FULL_SLICE(h) \
- (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), \
- ((h)->offset == 0 && (h)->length == DUK_HBUFFER_GET_SIZE((h)->buf)))
-
-/* Validate that the whole slice [0,length[ is contained in the underlying
- * buffer. Caller must ensure 'buf' != NULL.
- */
-#define DUK_HBUFFEROBJECT_VALID_SLICE(h) \
- (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), \
- ((h)->offset + (h)->length <= DUK_HBUFFER_GET_SIZE((h)->buf)))
-
-/* Validate byte read/write for virtual 'offset', i.e. check that the
- * offset, taking into account h->offset, is within the underlying
- * buffer size. This is a safety check which is needed to ensure
- * that even a misconfigured duk_hbufferobject never causes memory
- * unsafe behavior (e.g. if an underlying dynamic buffer changes
- * after being setup). Caller must ensure 'buf' != NULL.
- */
-#define DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_INCL(h,off) \
- (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), \
- ((h)->offset + (off) < DUK_HBUFFER_GET_SIZE((h)->buf)))
-
-#define DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h,off) \
- (DUK_ASSERT_EXPR((h) != NULL), DUK_ASSERT_EXPR((h)->buf != NULL), \
- ((h)->offset + (off) <= DUK_HBUFFER_GET_SIZE((h)->buf)))
-
-/* Clamp an input byte length (already assumed to be within the nominal
- * duk_hbufferobject 'length') to the current dynamic buffer limits to
- * yield a byte length limit that's safe for memory accesses. This value
- * can be invalidated by any side effect because it may trigger a user
- * callback that resizes the underlying buffer.
- */
-#define DUK_HBUFFEROBJECT_CLAMP_BYTELENGTH(h,len) \
- (DUK_ASSERT_EXPR((h) != NULL), \
- duk_hbufferobject_clamp_bytelength((h), (len)))
-
-struct duk_hbufferobject {
- /* Shared object part. */
- duk_hobject obj;
-
- /* Underlying buffer (refcounted), may be NULL. */
- duk_hbuffer *buf;
-
- /* Slice and accessor information.
- *
- * Because the underlying buffer may be dynamic, these may be
- * invalidated by the buffer being modified so that both offset
- * and length should be validated before every access. Behavior
- * when the underlying buffer has changed doesn't need to be clean:
- * virtual 'length' doesn't need to be affected, reads can return
- * zero/NaN, and writes can be ignored.
- *
- * Note that a data pointer cannot be precomputed because 'buf' may
- * be dynamic and its pointer unstable.
- */
-
- duk_uint_t offset; /* byte offset to buf */
- duk_uint_t length; /* byte index limit for element access, exclusive */
- duk_uint8_t shift; /* element size shift:
- * 0 = u8/i8
- * 1 = u16/i16
- * 2 = u32/i32/float
- * 3 = double
- */
- duk_uint8_t elem_type; /* element type */
- duk_uint8_t is_view;
-};
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL_DECL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len);
-#endif
-DUK_INTERNAL_DECL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size);
-DUK_INTERNAL_DECL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size);
-
-#endif /* DUK_HBUFFEROBJECT_H_INCLUDED */
-#line 1 "duk_hthread.h"
-/*
- * Heap thread object representation.
- *
- * duk_hthread is also the 'context' (duk_context) for exposed APIs
- * which mostly operate on the topmost frame of the value stack.
- */
-
-#ifndef DUK_HTHREAD_H_INCLUDED
-#define DUK_HTHREAD_H_INCLUDED
-
-/*
- * Stack constants
- */
-
-#define DUK_VALSTACK_GROW_STEP 128 /* roughly 1 kiB */
-#define DUK_VALSTACK_SHRINK_THRESHOLD 256 /* roughly 2 kiB */
-#define DUK_VALSTACK_SHRINK_SPARE 64 /* roughly 0.5 kiB */
-#define DUK_VALSTACK_INITIAL_SIZE 128 /* roughly 1.0 kiB -> but rounds up to DUK_VALSTACK_GROW_STEP in practice */
-#define DUK_VALSTACK_INTERNAL_EXTRA 64 /* internal extra elements assumed on function entry,
- * always added to user-defined 'extra' for e.g. the
- * duk_check_stack() call.
- */
-#define DUK_VALSTACK_API_ENTRY_MINIMUM DUK_API_ENTRY_STACK
- /* number of elements guaranteed to be user accessible
- * (in addition to call arguments) on Duktape/C function entry.
- */
-
-/* Note: DUK_VALSTACK_INITIAL_SIZE must be >= DUK_VALSTACK_API_ENTRY_MINIMUM
- * + DUK_VALSTACK_INTERNAL_EXTRA so that the initial stack conforms to spare
- * requirements.
- */
-
-#define DUK_VALSTACK_DEFAULT_MAX 1000000L
-
-#define DUK_CALLSTACK_GROW_STEP 8 /* roughly 256 bytes */
-#define DUK_CALLSTACK_SHRINK_THRESHOLD 16 /* roughly 512 bytes */
-#define DUK_CALLSTACK_SHRINK_SPARE 8 /* roughly 256 bytes */
-#define DUK_CALLSTACK_INITIAL_SIZE 8
-#define DUK_CALLSTACK_DEFAULT_MAX 10000L
-
-#define DUK_CATCHSTACK_GROW_STEP 4 /* roughly 64 bytes */
-#define DUK_CATCHSTACK_SHRINK_THRESHOLD 8 /* roughly 128 bytes */
-#define DUK_CATCHSTACK_SHRINK_SPARE 4 /* roughly 64 bytes */
-#define DUK_CATCHSTACK_INITIAL_SIZE 4
-#define DUK_CATCHSTACK_DEFAULT_MAX 10000L
-
-/*
- * Activation defines
- */
-
-#define DUK_ACT_FLAG_STRICT (1 << 0) /* function executes in strict mode */
-#define DUK_ACT_FLAG_TAILCALLED (1 << 1) /* activation has tail called one or more times */
-#define DUK_ACT_FLAG_CONSTRUCT (1 << 2) /* function executes as a constructor (called via "new") */
-#define DUK_ACT_FLAG_PREVENT_YIELD (1 << 3) /* activation prevents yield (native call or "new") */
-#define DUK_ACT_FLAG_DIRECT_EVAL (1 << 4) /* activation is a direct eval call */
-#define DUK_ACT_FLAG_BREAKPOINT_ACTIVE (1 << 5) /* activation has active breakpoint(s) */
-
-#define DUK_ACT_GET_FUNC(act) ((act)->func)
-
-/*
- * Flags for __FILE__ / __LINE__ registered into tracedata
- */
-
-#define DUK_TB_FLAG_NOBLAME_FILELINE (1 << 0) /* don't report __FILE__ / __LINE__ as fileName/lineNumber */
-
-/*
- * Catcher defines
- */
-
-/* flags field: LLLLLLFT, L = label (24 bits), F = flags (4 bits), T = type (4 bits) */
-#define DUK_CAT_TYPE_MASK 0x0000000fUL
-#define DUK_CAT_TYPE_BITS 4
-#define DUK_CAT_LABEL_MASK 0xffffff00UL
-#define DUK_CAT_LABEL_BITS 24
-#define DUK_CAT_LABEL_SHIFT 8
-
-#define DUK_CAT_FLAG_CATCH_ENABLED (1 << 4) /* catch part will catch */
-#define DUK_CAT_FLAG_FINALLY_ENABLED (1 << 5) /* finally part will catch */
-#define DUK_CAT_FLAG_CATCH_BINDING_ENABLED (1 << 6) /* request to create catch binding */
-#define DUK_CAT_FLAG_LEXENV_ACTIVE (1 << 7) /* catch or with binding is currently active */
-
-#define DUK_CAT_TYPE_UNKNOWN 0
-#define DUK_CAT_TYPE_TCF 1
-#define DUK_CAT_TYPE_LABEL 2
-
-#define DUK_CAT_GET_TYPE(c) ((c)->flags & DUK_CAT_TYPE_MASK)
-#define DUK_CAT_GET_LABEL(c) (((c)->flags & DUK_CAT_LABEL_MASK) >> DUK_CAT_LABEL_SHIFT)
-
-#define DUK_CAT_HAS_CATCH_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_CATCH_ENABLED)
-#define DUK_CAT_HAS_FINALLY_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_FINALLY_ENABLED)
-#define DUK_CAT_HAS_CATCH_BINDING_ENABLED(c) ((c)->flags & DUK_CAT_FLAG_CATCH_BINDING_ENABLED)
-#define DUK_CAT_HAS_LEXENV_ACTIVE(c) ((c)->flags & DUK_CAT_FLAG_LEXENV_ACTIVE)
-
-#define DUK_CAT_SET_CATCH_ENABLED(c) do { \
- (c)->flags |= DUK_CAT_FLAG_CATCH_ENABLED; \
- } while (0)
-#define DUK_CAT_SET_FINALLY_ENABLED(c) do { \
- (c)->flags |= DUK_CAT_FLAG_FINALLY_ENABLED; \
- } while (0)
-#define DUK_CAT_SET_CATCH_BINDING_ENABLED(c) do { \
- (c)->flags |= DUK_CAT_FLAG_CATCH_BINDING_ENABLED; \
- } while (0)
-#define DUK_CAT_SET_LEXENV_ACTIVE(c) do { \
- (c)->flags |= DUK_CAT_FLAG_LEXENV_ACTIVE; \
- } while (0)
-
-#define DUK_CAT_CLEAR_CATCH_ENABLED(c) do { \
- (c)->flags &= ~DUK_CAT_FLAG_CATCH_ENABLED; \
- } while (0)
-#define DUK_CAT_CLEAR_FINALLY_ENABLED(c) do { \
- (c)->flags &= ~DUK_CAT_FLAG_FINALLY_ENABLED; \
- } while (0)
-#define DUK_CAT_CLEAR_CATCH_BINDING_ENABLED(c) do { \
- (c)->flags &= ~DUK_CAT_FLAG_CATCH_BINDING_ENABLED; \
- } while (0)
-#define DUK_CAT_CLEAR_LEXENV_ACTIVE(c) do { \
- (c)->flags &= ~DUK_CAT_FLAG_LEXENV_ACTIVE; \
- } while (0)
-
-/*
- * Thread defines
- */
-
-#if defined(DUK_USE_ROM_STRINGS)
-#define DUK_HTHREAD_GET_STRING(thr,idx) \
- ((duk_hstring *) DUK_LOSE_CONST(duk_rom_strings_stridx[(idx)]))
-#else /* DUK_USE_ROM_STRINGS */
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HTHREAD_GET_STRING(thr,idx) \
- ((duk_hstring *) DUK_USE_HEAPPTR_DEC16((thr)->heap->heap_udata, (thr)->strs16[(idx)]))
-#else
-#define DUK_HTHREAD_GET_STRING(thr,idx) \
- ((thr)->strs[(idx)])
-#endif
-#endif /* DUK_USE_ROM_STRINGS */
-
-#define DUK_HTHREAD_GET_CURRENT_ACTIVATION(thr) (&(thr)->callstack[(thr)->callstack_top - 1])
-
-/* values for the state field */
-#define DUK_HTHREAD_STATE_INACTIVE 1 /* thread not currently running */
-#define DUK_HTHREAD_STATE_RUNNING 2 /* thread currently running (only one at a time) */
-#define DUK_HTHREAD_STATE_RESUMED 3 /* thread resumed another thread (active but not running) */
-#define DUK_HTHREAD_STATE_YIELDED 4 /* thread has yielded */
-#define DUK_HTHREAD_STATE_TERMINATED 5 /* thread has terminated */
-
-/* Executor interrupt default interval when nothing else requires a
- * smaller value. The default interval must be small enough to allow
- * for reasonable execution timeout checking but large enough to keep
- * impact on execution performance low.
- */
-#if defined(DUK_USE_INTERRUPT_COUNTER)
-#define DUK_HTHREAD_INTCTR_DEFAULT (256L * 1024L)
-#endif
-
-/*
- * Assert context is valid: non-NULL pointer, fields look sane.
- *
- * This is used by public API call entrypoints to catch invalid 'ctx' pointers
- * as early as possible; invalid 'ctx' pointers cause very odd and difficult to
- * diagnose behavior so it's worth checking even when the check is not 100%.
- */
-
-#if defined(DUK_USE_PREFER_SIZE)
-#define DUK_ASSERT_CTX_VSSIZE(ctx) /*nop*/
-#else
-#define DUK_ASSERT_CTX_VSSIZE(ctx) \
- DUK_ASSERT((duk_size_t) (((duk_hthread *) (ctx))->valstack_end - ((duk_hthread *) (ctx))->valstack) == \
- ((duk_hthread *) (ctx))->valstack_size)
-#endif
-#define DUK_ASSERT_CTX_VALID(ctx) do { \
- DUK_ASSERT((ctx) != NULL); \
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) (ctx)) == DUK_HTYPE_OBJECT); \
- DUK_ASSERT(DUK_HOBJECT_IS_THREAD((duk_hobject *) (ctx))); \
- DUK_ASSERT(((duk_hthread *) (ctx))->unused1 == 0); \
- DUK_ASSERT(((duk_hthread *) (ctx))->unused2 == 0); \
- DUK_ASSERT(((duk_hthread *) (ctx))->valstack != NULL); \
- DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack); \
- DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack); \
- DUK_ASSERT(((duk_hthread *) (ctx))->valstack_top >= ((duk_hthread *) (ctx))->valstack_bottom); \
- DUK_ASSERT(((duk_hthread *) (ctx))->valstack_end >= ((duk_hthread *) (ctx))->valstack_top); \
- DUK_ASSERT_CTX_VSSIZE((ctx)); \
- } while (0)
-
-/*
- * Struct defines
- */
-
-/* XXX: for a memory-code tradeoff, remove 'func' and make it's access either a function
- * or a macro. This would make the activation 32 bytes long on 32-bit platforms again.
- */
-
-/* Note: it's nice if size is 2^N (at least for 32-bit platforms). */
-struct duk_activation {
- duk_tval tv_func; /* borrowed: full duk_tval for function being executed; for lightfuncs */
- duk_hobject *func; /* borrowed: function being executed; for bound function calls, this is the final, real function, NULL for lightfuncs */
- duk_hobject *var_env; /* current variable environment (may be NULL if delayed) */
- duk_hobject *lex_env; /* current lexical environment (may be NULL if delayed) */
-#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- /* Previous value of 'func' caller, restored when unwound. Only in use
- * when 'func' is non-strict.
- */
- duk_hobject *prev_caller;
-#endif
-
- duk_instr_t *curr_pc; /* next instruction to execute (points to 'func' bytecode, stable pointer), NULL for native calls */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- duk_uint32_t prev_line; /* needed for stepping */
-#endif
- duk_small_uint_t flags;
-
- /* idx_bottom and idx_retval are only used for book-keeping of
- * Ecmascript-initiated calls, to allow returning to an Ecmascript
- * function properly. They are duk_size_t to match the convention
- * that value stack sizes are duk_size_t and local frame indices
- * are duk_idx_t.
- */
-
- /* Bottom of valstack for this activation, used to reset
- * valstack_bottom on return; index is absolute. Note:
- * idx_top not needed because top is set to 'nregs' always
- * when returning to an Ecmascript activation.
- */
- duk_size_t idx_bottom;
-
- /* Return value when returning to this activation (points to caller
- * reg, not callee reg); index is absolute (only set if activation is
- * not topmost).
- *
- * Note: idx_bottom is always set, while idx_retval is only applicable
- * for activations below the topmost one. Currently idx_retval for
- * the topmost activation is considered garbage (and it not initialized
- * on entry or cleared on return; may contain previous or garbage
- * values).
- */
- duk_size_t idx_retval;
-
- /* Current 'this' binding is the value just below idx_bottom.
- * Previously, 'this' binding was handled with an index to the
- * (calling) valstack. This works for everything except tail
- * calls, which must not "cumulate" valstack temps.
- */
-};
-
-/* Note: it's nice if size is 2^N (not 4x4 = 16 bytes on 32 bit) */
-struct duk_catcher {
- duk_hstring *h_varname; /* borrowed reference to catch variable name (or NULL if none) */
- /* (reference is valid as long activation exists) */
- duk_instr_t *pc_base; /* resume execution from pc_base or pc_base+1 (points to 'func' bytecode, stable pointer) */
- duk_size_t callstack_index; /* callstack index of related activation */
- duk_size_t idx_base; /* idx_base and idx_base+1 get completion value and type */
- duk_uint32_t flags; /* type and control flags, label number */
-};
-
-struct duk_hthread {
- /* Shared object part */
- duk_hobject obj;
-
- /* Pointer to bytecode executor's 'curr_pc' variable. Used to copy
- * the current PC back into the topmost activation when activation
- * state is about to change (or "syncing" is otherwise needed). This
- * is rather awkward but important for performance, see execution.rst.
- */
- duk_instr_t **ptr_curr_pc;
-
- /* Backpointers. */
- duk_heap *heap;
-
- /* Current strictness flag: affects API calls. */
- duk_uint8_t strict;
-
- /* Thread state. */
- duk_uint8_t state;
- duk_uint8_t unused1;
- duk_uint8_t unused2;
-
- /* Sanity limits for stack sizes. */
- duk_size_t valstack_max;
- duk_size_t callstack_max;
- duk_size_t catchstack_max;
-
- /* XXX: Valstack, callstack, and catchstack are currently assumed
- * to have non-NULL pointers. Relaxing this would not lead to big
- * benefits (except perhaps for terminated threads).
- */
-
- /* Value stack: these are expressed as pointers for faster stack manipulation.
- * [valstack,valstack_top[ is GC-reachable, [valstack_top,valstack_end[ is
- * not GC-reachable but kept initialized as 'undefined'.
- */
- duk_tval *valstack; /* start of valstack allocation */
- duk_tval *valstack_end; /* end of valstack allocation (exclusive) */
- duk_tval *valstack_bottom; /* bottom of current frame */
- duk_tval *valstack_top; /* top of current frame (exclusive) */
-#if !defined(DUK_USE_PREFER_SIZE)
- duk_size_t valstack_size; /* cached: valstack_end - valstack (in entries, not bytes) */
-#endif
-
- /* Call stack. [0,callstack_top[ is GC reachable. */
- duk_activation *callstack;
- duk_size_t callstack_size; /* allocation size */
- duk_size_t callstack_top; /* next to use, highest used is top - 1 */
- duk_size_t callstack_preventcount; /* number of activation records in callstack preventing a yield */
-
- /* Catch stack. [0,catchstack_top[ is GC reachable. */
- duk_catcher *catchstack;
- duk_size_t catchstack_size; /* allocation size */
- duk_size_t catchstack_top; /* next to use, highest used is top - 1 */
-
- /* Yield/resume book-keeping. */
- duk_hthread *resumer; /* who resumed us (if any) */
-
- /* Current compiler state (if any), used for augmenting SyntaxErrors. */
- duk_compiler_ctx *compile_ctx;
-
-#if defined(DUK_USE_INTERRUPT_COUNTER)
- /* Interrupt counter for triggering a slow path check for execution
- * timeout, debugger interaction such as breakpoints, etc. The value
- * is valid for the current running thread, and both the init and
- * counter values are copied whenever a thread switch occurs. It's
- * important for the counter to be conveniently accessible for the
- * bytecode executor inner loop for performance reasons.
- */
- duk_int_t interrupt_counter; /* countdown state */
- duk_int_t interrupt_init; /* start value for current countdown */
-#endif
-
- /* Builtin-objects; may or may not be shared with other threads,
- * threads existing in different "compartments" will have different
- * built-ins. Must be stored on a per-thread basis because there
- * is no intermediate structure for a thread group / compartment.
- * This takes quite a lot of space, currently 43x4 = 172 bytes on
- * 32-bit platforms.
- *
- * In some cases the builtins array could be ROM based, but it's
- * sometimes edited (e.g. for sandboxing) so it's better to keep
- * this array in RAM.
- */
- duk_hobject *builtins[DUK_NUM_BUILTINS];
-
- /* Convenience copies from heap/vm for faster access. */
-#if defined(DUK_USE_ROM_STRINGS)
- /* No field needed when strings are in ROM. */
-#else
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *strs16;
-#else
- duk_hstring **strs;
-#endif
-#endif
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL void duk_hthread_copy_builtin_objects(duk_hthread *thr_from, duk_hthread *thr_to);
-DUK_INTERNAL_DECL void duk_hthread_create_builtin_objects(duk_hthread *thr);
-DUK_INTERNAL_DECL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_terminate(duk_hthread *thr);
-
-DUK_INTERNAL_DECL void duk_hthread_callstack_grow(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_callstack_shrink_check(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_callstack_unwind(duk_hthread *thr, duk_size_t new_top);
-DUK_INTERNAL_DECL void duk_hthread_catchstack_grow(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_catchstack_shrink_check(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_catchstack_unwind(duk_hthread *thr, duk_size_t new_top);
-
-DUK_INTERNAL_DECL duk_activation *duk_hthread_get_current_activation(duk_hthread *thr);
-DUK_INTERNAL_DECL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */
-DUK_INTERNAL_DECL void *duk_hthread_get_callstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */
-DUK_INTERNAL_DECL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud); /* indirect allocs */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act);
-#endif
-DUK_INTERNAL_DECL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act);
-DUK_INTERNAL_DECL void duk_hthread_sync_currpc(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_hthread_sync_and_null_currpc(duk_hthread *thr);
-
-#endif /* DUK_HTHREAD_H_INCLUDED */
-#line 1 "duk_hbuffer.h"
-/*
- * Heap buffer representation.
- *
- * Heap allocated user data buffer which is either:
- *
- * 1. A fixed size buffer (data follows header statically)
- * 2. A dynamic size buffer (data pointer follows header)
- *
- * The data pointer for a variable size buffer of zero size may be NULL.
- */
-
-#ifndef DUK_HBUFFER_H_INCLUDED
-#define DUK_HBUFFER_H_INCLUDED
-
-/*
- * Flags
- *
- * Fixed buffer: 0
- * Dynamic buffer: DUK_HBUFFER_FLAG_DYNAMIC
- * External buffer: DUK_HBUFFER_FLAG_DYNAMIC | DUK_HBUFFER_FLAG_EXTERNAL
- */
-
-#define DUK_HBUFFER_FLAG_DYNAMIC DUK_HEAPHDR_USER_FLAG(0) /* buffer is behind a pointer, dynamic or external */
-#define DUK_HBUFFER_FLAG_EXTERNAL DUK_HEAPHDR_USER_FLAG(1) /* buffer pointer is to an externally allocated buffer */
-
-#define DUK_HBUFFER_HAS_DYNAMIC(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
-#define DUK_HBUFFER_HAS_EXTERNAL(x) DUK_HEAPHDR_CHECK_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
-
-#define DUK_HBUFFER_SET_DYNAMIC(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
-#define DUK_HBUFFER_SET_EXTERNAL(x) DUK_HEAPHDR_SET_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
-
-#define DUK_HBUFFER_CLEAR_DYNAMIC(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_DYNAMIC)
-#define DUK_HBUFFER_CLEAR_EXTERNAL(x) DUK_HEAPHDR_CLEAR_FLAG_BITS(&(x)->hdr, DUK_HBUFFER_FLAG_EXTERNAL)
-
-/*
- * Misc defines
- */
-
-/* Impose a maximum buffer length for now. Restricted artificially to
- * ensure resize computations or adding a heap header length won't
- * overflow size_t and that a signed duk_int_t can hold a buffer
- * length. The limit should be synchronized with DUK_HSTRING_MAX_BYTELEN.
- */
-
-#if defined(DUK_USE_BUFLEN16)
-#define DUK_HBUFFER_MAX_BYTELEN (0x0000ffffUL)
-#else
-/* Intentionally not 0x7fffffffUL; at least JSON code expects that
- * 2*len + 2 fits in 32 bits.
- */
-#define DUK_HBUFFER_MAX_BYTELEN (0x7ffffffeUL)
-#endif
-
-/*
- * Field access
- */
-
-/* Get/set the current user visible size, without accounting for a dynamic
- * buffer's "spare" (= usable size).
- */
-#if defined(DUK_USE_BUFLEN16)
-/* size stored in duk_heaphdr unused flag bits */
-#define DUK_HBUFFER_GET_SIZE(x) ((x)->hdr.h_flags >> 16)
-#define DUK_HBUFFER_SET_SIZE(x,v) do { \
- duk_size_t duk__v; \
- duk__v = (v); \
- DUK_ASSERT(duk__v <= 0xffffUL); \
- (x)->hdr.h_flags = ((x)->hdr.h_flags & 0x0000ffffUL) | (((duk_uint32_t) duk__v) << 16); \
- } while (0)
-#define DUK_HBUFFER_ADD_SIZE(x,dv) do { \
- (x)->hdr.h_flags += ((dv) << 16); \
- } while (0)
-#define DUK_HBUFFER_SUB_SIZE(x,dv) do { \
- (x)->hdr.h_flags -= ((dv) << 16); \
- } while (0)
-#else
-#define DUK_HBUFFER_GET_SIZE(x) (((duk_hbuffer *) (x))->size)
-#define DUK_HBUFFER_SET_SIZE(x,v) do { \
- ((duk_hbuffer *) (x))->size = (v); \
- } while (0)
-#define DUK_HBUFFER_ADD_SIZE(x,dv) do { \
- (x)->size += (dv); \
- } while (0)
-#define DUK_HBUFFER_SUB_SIZE(x,dv) do { \
- (x)->size -= (dv); \
- } while (0)
-#endif
-
-#define DUK_HBUFFER_FIXED_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x))
-#define DUK_HBUFFER_FIXED_SET_SIZE(x,v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x))
-
-#define DUK_HBUFFER_DYNAMIC_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x))
-#define DUK_HBUFFER_DYNAMIC_SET_SIZE(x,v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v))
-#define DUK_HBUFFER_DYNAMIC_ADD_SIZE(x,dv) DUK_HBUFFER_ADD_SIZE((duk_hbuffer *) (x), (dv))
-#define DUK_HBUFFER_DYNAMIC_SUB_SIZE(x,dv) DUK_HBUFFER_SUB_SIZE((duk_hbuffer *) (x), (dv))
-
-#define DUK_HBUFFER_EXTERNAL_GET_SIZE(x) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) (x))
-#define DUK_HBUFFER_EXTERNAL_SET_SIZE(x,v) DUK_HBUFFER_SET_SIZE((duk_hbuffer *) (x), (v))
-
-#define DUK_HBUFFER_FIXED_GET_DATA_PTR(heap,x) ((duk_uint8_t *) (((duk_hbuffer_fixed *) (x)) + 1))
-
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap,x) \
- ((void *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, ((duk_heaphdr *) (x))->h_extra16))
-#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap,x,v) do { \
- ((duk_heaphdr *) (x))->h_extra16 = DUK_USE_HEAPPTR_ENC16((heap)->heap_udata, (void *) (v)); \
- } while (0)
-#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(heap,x) do { \
- ((duk_heaphdr *) (x))->h_extra16 = 0; /* assume 0 <=> NULL */ \
- } while (0)
-#else
-#define DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap,x) ((x)->curr_alloc)
-#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap,x,v) do { \
- (x)->curr_alloc = (void *) (v); \
- } while (0)
-#define DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(heap,x) do { \
- (x)->curr_alloc = (void *) NULL; \
- } while (0)
-#endif
-
-/* No pointer compression because pointer is potentially outside of
- * Duktape heap.
- */
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \
- ((void *) (x)->curr_alloc)
-#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \
- (x)->curr_alloc = (void *) (v); \
- } while (0)
-#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \
- (x)->curr_alloc = (void *) NULL; \
- } while (0)
-#else
-#define DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap,x) \
- ((void *) (x)->curr_alloc)
-#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap,x,v) do { \
- (x)->curr_alloc = (void *) (v); \
- } while (0)
-#define DUK_HBUFFER_EXTERNAL_SET_DATA_PTR_NULL(heap,x) do { \
- (x)->curr_alloc = (void *) NULL; \
- } while (0)
-#endif
-
-/* Get a pointer to the current buffer contents (matching current allocation
- * size). May be NULL for zero size dynamic/external buffer.
- */
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \
- DUK_HBUFFER_HAS_DYNAMIC((x)) ? \
- ( \
- DUK_HBUFFER_HAS_EXTERNAL((x)) ? \
- DUK_HBUFFER_EXTERNAL_GET_DATA_PTR((heap), (duk_hbuffer_external *) (x)) : \
- DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) \
- ) : \
- DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \
- )
-#else
-/* Without heap pointer compression duk_hbuffer_dynamic and duk_hbuffer_external
- * have the same layout so checking for fixed vs. dynamic (or external) is enough.
- */
-#define DUK_HBUFFER_GET_DATA_PTR(heap,x) ( \
- DUK_HBUFFER_HAS_DYNAMIC((x)) ? \
- DUK_HBUFFER_DYNAMIC_GET_DATA_PTR((heap), (duk_hbuffer_dynamic *) (x)) : \
- DUK_HBUFFER_FIXED_GET_DATA_PTR((heap), (duk_hbuffer_fixed *) (x)) \
- )
-#endif
-
-/*
- * Structs
- */
-
-/* Shared prefix for all buffer types. */
-struct duk_hbuffer {
- duk_heaphdr hdr;
-
- /* It's not strictly necessary to track the current size, but
- * it is useful for writing robust native code.
- */
-
- /* Current size (not counting a dynamic buffer's "spare"). */
-#if defined(DUK_USE_BUFLEN16)
- /* Stored in duk_heaphdr unused flags. */
-#else
- duk_size_t size;
-#endif
-
- /*
- * Data following the header depends on the DUK_HBUFFER_FLAG_DYNAMIC
- * flag.
- *
- * If the flag is clear (the buffer is a fixed size one), the buffer
- * data follows the header directly, consisting of 'size' bytes.
- *
- * If the flag is set, the actual buffer is allocated separately, and
- * a few control fields follow the header. Specifically:
- *
- * - a "void *" pointing to the current allocation
- * - a duk_size_t indicating the full allocated size (always >= 'size')
- *
- * If DUK_HBUFFER_FLAG_EXTERNAL is set, the buffer has been allocated
- * by user code, so that Duktape won't be able to resize it and won't
- * free it. This allows buffers to point to e.g. an externally
- * allocated structure such as a frame buffer.
- *
- * Unlike strings, no terminator byte (NUL) is guaranteed after the
- * data. This would be convenient, but would pad aligned user buffers
- * unnecessarily upwards in size. For instance, if user code requested
- * a 64-byte dynamic buffer, 65 bytes would actually be allocated which
- * would then potentially round upwards to perhaps 68 or 72 bytes.
- */
-};
-
-/* Fixed buffer; data follows struct, with proper alignment guaranteed by
- * struct size.
- */
-#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA)
-#pragma pack(push, 8)
-#endif
-struct duk_hbuffer_fixed {
- /* A union is used here as a portable struct size / alignment trick:
- * by adding a 32-bit or a 64-bit (unused) union member, the size of
- * the struct is effectively forced to be a multiple of 4 or 8 bytes
- * (respectively) without increasing the size of the struct unless
- * necessary.
- */
- union {
- struct {
- duk_heaphdr hdr;
-#if defined(DUK_USE_BUFLEN16)
- /* Stored in duk_heaphdr unused flags. */
-#else
- duk_size_t size;
-#endif
- } s;
-#if (DUK_USE_ALIGN_BY == 4)
- duk_uint32_t dummy_for_align4;
-#elif (DUK_USE_ALIGN_BY == 8)
- duk_double_t dummy_for_align8;
-#elif (DUK_USE_ALIGN_BY == 1)
- /* no extra padding */
-#else
-#error invalid DUK_USE_ALIGN_BY
-#endif
- } u;
-
- /*
- * Data follows the struct header. The struct size is padded by the
- * compiler based on the struct members. This guarantees that the
- * buffer data will be aligned-by-4 but not necessarily aligned-by-8.
- *
- * On platforms where alignment does not matter, the struct padding
- * could be removed (if there is any). On platforms where alignment
- * by 8 is required, the struct size must be forced to be a multiple
- * of 8 by some means. Without it, some user code may break, and also
- * Duktape itself breaks (e.g. the compiler stores duk_tvals in a
- * dynamic buffer).
- */
-}
-#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_GCC_ATTR)
-__attribute__ ((aligned (8)))
-#elif (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_CLANG_ATTR)
-__attribute__ ((aligned (8)))
-#endif
-;
-#if (DUK_USE_ALIGN_BY == 8) && defined(DUK_USE_PACK_MSVC_PRAGMA)
-#pragma pack(pop)
-#endif
-
-/* Dynamic buffer with 'curr_alloc' pointing to a dynamic area allocated using
- * heap allocation primitives. Also used for external buffers when low memory
- * options are not used.
- */
-struct duk_hbuffer_dynamic {
- duk_heaphdr hdr;
-
-#if defined(DUK_USE_BUFLEN16)
- /* Stored in duk_heaphdr unused flags. */
-#else
- duk_size_t size;
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- /* Stored in duk_heaphdr h_extra16. */
-#else
- void *curr_alloc; /* may be NULL if alloc_size == 0 */
-#endif
-
- /*
- * Allocation size for 'curr_alloc' is alloc_size. There is no
- * automatic NUL terminator for buffers (see above for rationale).
- *
- * 'curr_alloc' is explicitly allocated with heap allocation
- * primitives and will thus always have alignment suitable for
- * e.g. duk_tval and an IEEE double.
- */
-};
-
-/* External buffer with 'curr_alloc' managed by user code and pointing to an
- * arbitrary address. When heap pointer compression is not used, this struct
- * has the same layout as duk_hbuffer_dynamic.
- */
-struct duk_hbuffer_external {
- duk_heaphdr hdr;
-
-#if defined(DUK_USE_BUFLEN16)
- /* Stored in duk_heaphdr unused flags. */
-#else
- duk_size_t size;
-#endif
-
- /* Cannot be compressed as a heap pointer because may point to
- * an arbitrary address.
- */
- void *curr_alloc; /* may be NULL if alloc_size == 0 */
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata);
-DUK_INTERNAL_DECL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud); /* indirect allocs */
-
-/* dynamic buffer ops */
-DUK_INTERNAL_DECL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf, duk_size_t new_size);
-DUK_INTERNAL_DECL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf);
-
-#endif /* DUK_HBUFFER_H_INCLUDED */
-#line 1 "duk_heap.h"
-/*
- * Heap structure.
- *
- * Heap contains allocated heap objects, interned strings, and built-in
- * strings for one or more threads.
- */
-
-#ifndef DUK_HEAP_H_INCLUDED
-#define DUK_HEAP_H_INCLUDED
-
-/* alloc function typedefs in duktape.h */
-
-/*
- * Heap flags
- */
-
-#define DUK_HEAP_FLAG_MARKANDSWEEP_RUNNING (1 << 0) /* mark-and-sweep is currently running */
-#define DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED (1 << 1) /* mark-and-sweep marking reached a recursion limit and must use multi-pass marking */
-#define DUK_HEAP_FLAG_REFZERO_FREE_RUNNING (1 << 2) /* refcount code is processing refzero list */
-#define DUK_HEAP_FLAG_ERRHANDLER_RUNNING (1 << 3) /* an error handler (user callback to augment/replace error) is running */
-#define DUK_HEAP_FLAG_INTERRUPT_RUNNING (1 << 4) /* executor interrupt running (used to avoid nested interrupts) */
-#define DUK_HEAP_FLAG_FINALIZER_NORESCUE (1 << 5) /* heap destruction ongoing, finalizer rescue no longer possible */
-
-#define DUK__HEAP_HAS_FLAGS(heap,bits) ((heap)->flags & (bits))
-#define DUK__HEAP_SET_FLAGS(heap,bits) do { \
- (heap)->flags |= (bits); \
- } while (0)
-#define DUK__HEAP_CLEAR_FLAGS(heap,bits) do { \
- (heap)->flags &= ~(bits); \
- } while (0)
-
-#define DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RUNNING)
-#define DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED)
-#define DUK_HEAP_HAS_REFZERO_FREE_RUNNING(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_REFZERO_FREE_RUNNING)
-#define DUK_HEAP_HAS_ERRHANDLER_RUNNING(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_ERRHANDLER_RUNNING)
-#define DUK_HEAP_HAS_INTERRUPT_RUNNING(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING)
-#define DUK_HEAP_HAS_FINALIZER_NORESCUE(heap) DUK__HEAP_HAS_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE)
-
-#define DUK_HEAP_SET_MARKANDSWEEP_RUNNING(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RUNNING)
-#define DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED)
-#define DUK_HEAP_SET_REFZERO_FREE_RUNNING(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_REFZERO_FREE_RUNNING)
-#define DUK_HEAP_SET_ERRHANDLER_RUNNING(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_ERRHANDLER_RUNNING)
-#define DUK_HEAP_SET_INTERRUPT_RUNNING(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING)
-#define DUK_HEAP_SET_FINALIZER_NORESCUE(heap) DUK__HEAP_SET_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE)
-
-#define DUK_HEAP_CLEAR_MARKANDSWEEP_RUNNING(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RUNNING)
-#define DUK_HEAP_CLEAR_MARKANDSWEEP_RECLIMIT_REACHED(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_MARKANDSWEEP_RECLIMIT_REACHED)
-#define DUK_HEAP_CLEAR_REFZERO_FREE_RUNNING(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_REFZERO_FREE_RUNNING)
-#define DUK_HEAP_CLEAR_ERRHANDLER_RUNNING(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_ERRHANDLER_RUNNING)
-#define DUK_HEAP_CLEAR_INTERRUPT_RUNNING(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_INTERRUPT_RUNNING)
-#define DUK_HEAP_CLEAR_FINALIZER_NORESCUE(heap) DUK__HEAP_CLEAR_FLAGS((heap), DUK_HEAP_FLAG_FINALIZER_NORESCUE)
-
-/*
- * Longjmp types, also double as identifying continuation type for a rethrow (in 'finally')
- */
-
-#define DUK_LJ_TYPE_UNKNOWN 0 /* unused */
-#define DUK_LJ_TYPE_THROW 1 /* value1 -> error object */
-#define DUK_LJ_TYPE_YIELD 2 /* value1 -> yield value, iserror -> error / normal */
-#define DUK_LJ_TYPE_RESUME 3 /* value1 -> resume value, value2 -> resumee thread, iserror -> error/normal */
-#define DUK_LJ_TYPE_BREAK 4 /* value1 -> label number, pseudo-type to indicate a break continuation (for ENDFIN) */
-#define DUK_LJ_TYPE_CONTINUE 5 /* value1 -> label number, pseudo-type to indicate a continue continuation (for ENDFIN) */
-#define DUK_LJ_TYPE_RETURN 6 /* value1 -> return value, pseudo-type to indicate a return continuation (for ENDFIN) */
-#define DUK_LJ_TYPE_NORMAL 7 /* no value, pseudo-type to indicate a normal continuation (for ENDFIN) */
-
-/*
- * Mark-and-sweep flags
- *
- * These are separate from heap level flags now but could be merged.
- * The heap structure only contains a 'base mark-and-sweep flags'
- * field and the GC caller can impose further flags.
- */
-
-#define DUK_MS_FLAG_EMERGENCY (1 << 0) /* emergency mode: try extra hard */
-#define DUK_MS_FLAG_NO_STRINGTABLE_RESIZE (1 << 1) /* don't resize stringtable (but may sweep it); needed during stringtable resize */
-#define DUK_MS_FLAG_NO_OBJECT_COMPACTION (1 << 2) /* don't compact objects; needed during object property allocation resize */
-#define DUK_MS_FLAG_NO_FINALIZERS (1 << 3) /* don't run finalizers; leave finalizable objects in finalize_list for next round */
-#define DUK_MS_FLAG_SKIP_FINALIZERS (1 << 4) /* don't run finalizers; queue finalizable objects back to heap_allocated */
-
-/*
- * Thread switching
- *
- * To switch heap->curr_thread, use the macro below so that interrupt counters
- * get updated correctly. The macro allows a NULL target thread because that
- * happens e.g. in call handling.
- */
-
-#if defined(DUK_USE_INTERRUPT_COUNTER)
-#define DUK_HEAP_SWITCH_THREAD(heap,newthr) duk_heap_switch_thread((heap), (newthr))
-#else
-#define DUK_HEAP_SWITCH_THREAD(heap,newthr) do { \
- (heap)->curr_thread = (newthr); \
- } while (0)
-#endif
-
-/*
- * Other heap related defines
- */
-
-/* Mark-and-sweep interval is relative to combined count of objects and
- * strings kept in the heap during the latest mark-and-sweep pass.
- * Fixed point .8 multiplier and .0 adder. Trigger count (interval) is
- * decreased by each (re)allocation attempt (regardless of size), and each
- * refzero processed object.
- *
- * 'SKIP' indicates how many (re)allocations to wait until a retry if
- * GC is skipped because there is no thread do it with yet (happens
- * only during init phases).
- */
-#if defined(DUK_USE_MARK_AND_SWEEP)
-#if defined(DUK_USE_REFERENCE_COUNTING)
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT 12800L /* 50x heap size */
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD 1024L
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_SKIP 256L
-#else
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT 256L /* 1x heap size */
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD 1024L
-#define DUK_HEAP_MARK_AND_SWEEP_TRIGGER_SKIP 256L
-#endif
-#endif
-
-/* Stringcache is used for speeding up char-offset-to-byte-offset
- * translations for non-ASCII strings.
- */
-#define DUK_HEAP_STRCACHE_SIZE 4
-#define DUK_HEAP_STRINGCACHE_NOCACHE_LIMIT 16 /* strings up to the this length are not cached */
-
-/* helper to insert a (non-string) heap object into heap allocated list */
-#define DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap,hdr) duk_heap_insert_into_heap_allocated((heap),(hdr))
-
-/*
- * Stringtable
- */
-
-/* initial stringtable size, must be prime and higher than DUK_UTIL_MIN_HASH_PRIME */
-#define DUK_STRTAB_INITIAL_SIZE 17
-
-/* indicates a deleted string; any fixed non-NULL, non-hstring pointer works */
-#define DUK_STRTAB_DELETED_MARKER(heap) ((duk_hstring *) heap)
-
-/* resizing parameters */
-#define DUK_STRTAB_MIN_FREE_DIVISOR 4 /* load factor max 75% */
-#define DUK_STRTAB_MIN_USED_DIVISOR 4 /* load factor min 25% */
-#define DUK_STRTAB_GROW_ST_SIZE(n) ((n) + (n)) /* used entries + approx 100% -> reset load to 50% */
-
-#define DUK_STRTAB_U32_MAX_STRLEN 10 /* 4'294'967'295 */
-#define DUK_STRTAB_HIGHEST_32BIT_PRIME 0xfffffffbUL
-
-/* probe sequence (open addressing) */
-#define DUK_STRTAB_HASH_INITIAL(hash,h_size) ((hash) % (h_size))
-#define DUK_STRTAB_HASH_PROBE_STEP(hash) DUK_UTIL_GET_HASH_PROBE_STEP((hash))
-
-/* fixed top level hashtable size (separate chaining) */
-#define DUK_STRTAB_CHAIN_SIZE DUK_USE_STRTAB_CHAIN_SIZE
-
-/*
- * Built-in strings
- */
-
-/* heap string indices are autogenerated in duk_strings.h */
-#if defined(DUK_USE_ROM_STRINGS)
-#define DUK_HEAP_GET_STRING(heap,idx) \
- ((duk_hstring *) DUK_LOSE_CONST(duk_rom_strings_stridx[(idx)]))
-#else /* DUK_USE_ROM_STRINGS */
-#if defined(DUK_USE_HEAPPTR16)
-#define DUK_HEAP_GET_STRING(heap,idx) \
- ((duk_hstring *) DUK_USE_HEAPPTR_DEC16((heap)->heap_udata, (heap)->strs16[(idx)]))
-#else
-#define DUK_HEAP_GET_STRING(heap,idx) \
- ((heap)->strs[(idx)])
-#endif
-#endif /* DUK_USE_ROM_STRINGS */
-
-/*
- * Raw memory calls: relative to heap, but no GC interaction
- */
-
-#define DUK_ALLOC_RAW(heap,size) \
- ((heap)->alloc_func((heap)->heap_udata, (size)))
-
-#define DUK_REALLOC_RAW(heap,ptr,newsize) \
- ((heap)->realloc_func((heap)->heap_udata, (void *) (ptr), (newsize)))
-
-#define DUK_FREE_RAW(heap,ptr) \
- ((heap)->free_func((heap)->heap_udata, (void *) (ptr)))
-
-/*
- * Memory calls: relative to heap, GC interaction, but no error throwing.
- *
- * XXX: Currently a mark-and-sweep triggered by memory allocation will run
- * using the heap->heap_thread. This thread is also used for running
- * mark-and-sweep finalization; this is not ideal because it breaks the
- * isolation between multiple global environments.
- *
- * Notes:
- *
- * - DUK_FREE() is required to ignore NULL and any other possible return
- * value of a zero-sized alloc/realloc (same as ANSI C free()).
- *
- * - There is no DUK_REALLOC_ZEROED because we don't assume to know the
- * old size. Caller must zero the reallocated memory.
- *
- * - DUK_REALLOC_INDIRECT() must be used when a mark-and-sweep triggered
- * by an allocation failure might invalidate the original 'ptr', thus
- * causing a realloc retry to use an invalid pointer. Example: we're
- * reallocating the value stack and a finalizer resizes the same value
- * stack during mark-and-sweep. The indirect variant requests for the
- * current location of the pointer being reallocated using a callback
- * right before every realloc attempt; this circuitous approach is used
- * to avoid strict aliasing issues in a more straightforward indirect
- * pointer (void **) approach. Note: the pointer in the storage
- * location is read but is NOT updated; the caller must do that.
- */
-
-/* callback for indirect reallocs, request for current pointer */
-typedef void *(*duk_mem_getptr)(duk_heap *heap, void *ud);
-
-#define DUK_ALLOC(heap,size) duk_heap_mem_alloc((heap), (size))
-#define DUK_ALLOC_ZEROED(heap,size) duk_heap_mem_alloc_zeroed((heap), (size))
-#define DUK_REALLOC(heap,ptr,newsize) duk_heap_mem_realloc((heap), (ptr), (newsize))
-#define DUK_REALLOC_INDIRECT(heap,cb,ud,newsize) duk_heap_mem_realloc_indirect((heap), (cb), (ud), (newsize))
-#define DUK_FREE(heap,ptr) duk_heap_mem_free((heap), (ptr))
-
-/*
- * Memory constants
- */
-
-#define DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT 5 /* Retry allocation after mark-and-sweep for this
- * many times. A single mark-and-sweep round is
- * not guaranteed to free all unreferenced memory
- * because of finalization (in fact, ANY number of
- * rounds is strictly not enough).
- */
-
-#define DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT 3 /* Starting from this round, use emergency mode
- * for mark-and-sweep.
- */
-
-/*
- * Debugger support
- */
-
-/* Maximum number of breakpoints. Only breakpoints that are set are
- * consulted so increasing this has no performance impact.
- */
-#define DUK_HEAP_MAX_BREAKPOINTS 16
-
-/* Opcode interval for a Date-based status/peek rate limit check. Only
- * relevant when debugger is attached. Requesting a timestamp may be a
- * slow operation on some platforms so this shouldn't be too low. On the
- * other hand a high value makes Duktape react to a pause request slowly.
- */
-#define DUK_HEAP_DBG_RATELIMIT_OPCODES 4000
-
-/* Milliseconds between status notify and transport peeks. */
-#define DUK_HEAP_DBG_RATELIMIT_MILLISECS 200
-
-/* Step types */
-#define DUK_STEP_TYPE_NONE 0
-#define DUK_STEP_TYPE_INTO 1
-#define DUK_STEP_TYPE_OVER 2
-#define DUK_STEP_TYPE_OUT 3
-
-struct duk_breakpoint {
- duk_hstring *filename;
- duk_uint32_t line;
-};
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-#define DUK_HEAP_IS_DEBUGGER_ATTACHED(heap) ((heap)->dbg_read_cb != NULL)
-#define DUK_HEAP_CLEAR_STEP_STATE(heap) do { \
- (heap)->dbg_step_type = DUK_STEP_TYPE_NONE; \
- (heap)->dbg_step_thread = NULL; \
- (heap)->dbg_step_csindex = 0; \
- (heap)->dbg_step_startline = 0; \
- } while (0)
-#define DUK_HEAP_SET_PAUSED(heap) do { \
- (heap)->dbg_paused = 1; \
- (heap)->dbg_state_dirty = 1; \
- DUK_HEAP_CLEAR_STEP_STATE((heap)); \
- } while (0)
-#define DUK_HEAP_CLEAR_PAUSED(heap) do { \
- (heap)->dbg_paused = 0; \
- (heap)->dbg_state_dirty = 1; \
- DUK_HEAP_CLEAR_STEP_STATE((heap)); \
- } while (0)
-#define DUK_HEAP_IS_PAUSED(heap) ((heap)->dbg_paused)
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
-/*
- * String cache should ideally be at duk_hthread level, but that would
- * cause string finalization to slow down relative to the number of
- * threads; string finalization must check the string cache for "weak"
- * references to the string being finalized to avoid dead pointers.
- *
- * Thus, string caches are now at the heap level now.
- */
-
-struct duk_strcache {
- duk_hstring *h;
- duk_uint32_t bidx;
- duk_uint32_t cidx;
-};
-
-/*
- * Longjmp state, contains the information needed to perform a longjmp.
- * Longjmp related values are written to value1, value2, and iserror.
- */
-
-struct duk_ljstate {
- duk_jmpbuf *jmpbuf_ptr; /* current setjmp() catchpoint */
- duk_small_uint_t type; /* longjmp type */
- duk_bool_t iserror; /* isError flag for yield */
- duk_tval value1; /* 1st related value (type specific) */
- duk_tval value2; /* 2nd related value (type specific) */
-};
-
-/*
- * Stringtable entry for fixed size stringtable
- */
-
-struct duk_strtab_entry {
-#if defined(DUK_USE_HEAPPTR16)
- /* A 16-bit listlen makes sense with 16-bit heap pointers: there
- * won't be space for 64k strings anyway.
- */
- duk_uint16_t listlen; /* if 0, 'str16' used, if > 0, 'strlist16' used */
- union {
- duk_uint16_t strlist16;
- duk_uint16_t str16;
- } u;
-#else
- duk_size_t listlen; /* if 0, 'str' used, if > 0, 'strlist' used */
- union {
- duk_hstring **strlist;
- duk_hstring *str;
- } u;
-#endif
-};
-
-/*
- * Main heap structure
- */
-
-struct duk_heap {
- duk_small_uint_t flags;
-
- /* Allocator functions. */
- duk_alloc_function alloc_func;
- duk_realloc_function realloc_func;
- duk_free_function free_func;
-
- /* Heap udata, used for allocator functions but also for other heap
- * level callbacks like pointer compression, etc.
- */
- void *heap_udata;
-
- /* Precomputed pointers when using 16-bit heap pointer packing. */
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t heapptr_null16;
- duk_uint16_t heapptr_deleted16;
-#endif
-
- /* Fatal error handling, called e.g. when a longjmp() is needed but
- * lj.jmpbuf_ptr is NULL. fatal_func must never return; it's not
- * declared as "noreturn" because doing that for typedefs is a bit
- * challenging portability-wise.
- */
- duk_fatal_function fatal_func;
-
- /* allocated heap objects */
- duk_heaphdr *heap_allocated;
-
- /* work list for objects whose refcounts are zero but which have not been
- * "finalized"; avoids recursive C calls when refcounts go to zero in a
- * chain of objects.
- */
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk_heaphdr *refzero_list;
- duk_heaphdr *refzero_list_tail;
-#endif
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
- /* mark-and-sweep control */
-#if defined(DUK_USE_VOLUNTARY_GC)
- duk_int_t mark_and_sweep_trigger_counter;
-#endif
- duk_int_t mark_and_sweep_recursion_depth;
-
- /* mark-and-sweep flags automatically active (used for critical sections) */
- duk_small_uint_t mark_and_sweep_base_flags;
-
- /* work list for objects to be finalized (by mark-and-sweep) */
- duk_heaphdr *finalize_list;
-#endif
-
- /* longjmp state */
- duk_ljstate lj;
-
- /* marker for detecting internal "double faults", see duk_error_throw.c */
- duk_bool_t handling_error;
-
- /* heap thread, used internally and for finalization */
- duk_hthread *heap_thread;
-
- /* current thread */
- duk_hthread *curr_thread; /* currently running thread */
-
- /* heap level "stash" object (e.g., various reachability roots) */
- duk_hobject *heap_object;
-
- /* duk_handle_call / duk_handle_safe_call recursion depth limiting */
- duk_int_t call_recursion_depth;
- duk_int_t call_recursion_limit;
-
- /* mix-in value for computing string hashes; should be reasonably unpredictable */
- duk_uint32_t hash_seed;
-
- /* rnd_state for duk_util_tinyrandom.c */
- duk_uint32_t rnd_state;
-
- /* For manual debugging: instruction count based on executor and
- * interrupt counter book-keeping. Inspect debug logs to see how
- * they match up.
- */
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
- duk_int_t inst_count_exec;
- duk_int_t inst_count_interrupt;
-#endif
-
- /* debugger */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- /* callbacks and udata; dbg_read_cb != NULL is used to indicate attached state */
- duk_debug_read_function dbg_read_cb; /* required, NULL implies detached */
- duk_debug_write_function dbg_write_cb; /* required */
- duk_debug_peek_function dbg_peek_cb;
- duk_debug_read_flush_function dbg_read_flush_cb;
- duk_debug_write_flush_function dbg_write_flush_cb;
- duk_debug_request_function dbg_request_cb;
- duk_debug_detached_function dbg_detached_cb;
- void *dbg_udata;
-
- /* debugger state, only relevant when attached */
- duk_bool_t dbg_processing; /* currently processing messages or breakpoints: don't enter message processing recursively (e.g. no breakpoints when processing debugger eval) */
- duk_bool_t dbg_paused; /* currently paused: talk with debug client until step/resume */
- duk_bool_t dbg_state_dirty; /* resend state next time executor is about to run */
- duk_bool_t dbg_force_restart; /* force executor restart to recheck breakpoints; used to handle function returns (see GH-303) */
- duk_bool_t dbg_detaching; /* debugger detaching; used to avoid calling detach handler recursively */
- duk_small_uint_t dbg_step_type; /* step type: none, step into, step over, step out */
- duk_hthread *dbg_step_thread; /* borrowed; NULL if no step state (NULLed in unwind) */
- duk_size_t dbg_step_csindex; /* callstack index */
- duk_uint32_t dbg_step_startline; /* starting line number */
- duk_breakpoint dbg_breakpoints[DUK_HEAP_MAX_BREAKPOINTS]; /* breakpoints: [0,breakpoint_count[ gc reachable */
- duk_small_uint_t dbg_breakpoint_count;
- duk_breakpoint *dbg_breakpoints_active[DUK_HEAP_MAX_BREAKPOINTS + 1]; /* currently active breakpoints: NULL term, borrowed pointers */
- /* XXX: make active breakpoints actual copies instead of pointers? */
-
- /* These are for rate limiting Status notifications and transport peeking. */
- duk_uint32_t dbg_exec_counter; /* cumulative opcode execution count (overflows are OK) */
- duk_uint32_t dbg_last_counter; /* value of dbg_exec_counter when we last did a Date-based check */
- duk_double_t dbg_last_time; /* time when status/peek was last done (Date-based rate limit) */
-
- /* Used to support single-byte stream lookahead. */
- duk_bool_t dbg_have_next_byte;
- duk_uint8_t dbg_next_byte;
-#endif
-
- /* string intern table (weak refs) */
-#if defined(DUK_USE_STRTAB_PROBE)
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *strtable16;
-#else
- duk_hstring **strtable;
-#endif
- duk_uint32_t st_size; /* alloc size in elements */
- duk_uint32_t st_used; /* used elements (includes DELETED) */
-#endif
-
- /* XXX: static alloc is OK until separate chaining stringtable
- * resizing is implemented.
- */
-#if defined(DUK_USE_STRTAB_CHAIN)
- duk_strtab_entry strtable[DUK_STRTAB_CHAIN_SIZE];
-#endif
-
- /* string access cache (codepoint offset -> byte offset) for fast string
- * character looping; 'weak' reference which needs special handling in GC.
- */
- duk_strcache strcache[DUK_HEAP_STRCACHE_SIZE];
-
- /* built-in strings */
-#if defined(DUK_USE_ROM_STRINGS)
- /* No field needed when strings are in ROM. */
-#else
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t strs16[DUK_HEAP_NUM_STRINGS];
-#else
- duk_hstring *strs[DUK_HEAP_NUM_STRINGS];
-#endif
-#endif
-};
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL
-duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
- duk_realloc_function realloc_func,
- duk_free_function free_func,
- void *heap_udata,
- duk_fatal_function fatal_func);
-DUK_INTERNAL_DECL void duk_heap_free(duk_heap *heap);
-DUK_INTERNAL_DECL void duk_free_hobject_inner(duk_heap *heap, duk_hobject *h);
-DUK_INTERNAL_DECL void duk_free_hbuffer_inner(duk_heap *heap, duk_hbuffer *h);
-DUK_INTERNAL_DECL void duk_free_hstring_inner(duk_heap *heap, duk_hstring *h);
-DUK_INTERNAL_DECL void duk_heap_free_heaphdr_raw(duk_heap *heap, duk_heaphdr *hdr);
-
-DUK_INTERNAL_DECL void duk_heap_insert_into_heap_allocated(duk_heap *heap, duk_heaphdr *hdr);
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP) && defined(DUK_USE_REFERENCE_COUNTING)
-DUK_INTERNAL_DECL void duk_heap_remove_any_from_heap_allocated(duk_heap *heap, duk_heaphdr *hdr);
-#endif
-#if defined(DUK_USE_INTERRUPT_COUNTER)
-DUK_INTERNAL_DECL void duk_heap_switch_thread(duk_heap *heap, duk_hthread *new_thr);
-#endif
-
-#if 0 /*unused*/
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_lookup(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen);
-#endif
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen);
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_checked(duk_hthread *thr, const duk_uint8_t *str, duk_uint32_t len);
-#if 0 /*unused*/
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_lookup_u32(duk_heap *heap, duk_uint32_t val);
-#endif
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32(duk_heap *heap, duk_uint32_t val);
-DUK_INTERNAL_DECL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, duk_uint32_t val);
-#if defined(DUK_USE_REFERENCE_COUNTING)
-DUK_INTERNAL_DECL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h);
-#endif
-#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE)
-DUK_INTERNAL_DECL void duk_heap_force_strtab_resize(duk_heap *heap);
-#endif
-DUK_INTERNAL void duk_heap_free_strtab(duk_heap *heap);
-#if defined(DUK_USE_DEBUG)
-DUK_INTERNAL void duk_heap_dump_strtab(duk_heap *heap);
-#endif
-
-
-DUK_INTERNAL_DECL void duk_heap_strcache_string_remove(duk_heap *heap, duk_hstring *h);
-DUK_INTERNAL_DECL duk_uint_fast32_t duk_heap_strcache_offset_char2byte(duk_hthread *thr, duk_hstring *h, duk_uint_fast32_t char_offset);
-
-#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS)
-DUK_INTERNAL_DECL void *duk_default_alloc_function(void *udata, duk_size_t size);
-DUK_INTERNAL_DECL void *duk_default_realloc_function(void *udata, void *ptr, duk_size_t newsize);
-DUK_INTERNAL_DECL void duk_default_free_function(void *udata, void *ptr);
-#endif
-
-DUK_INTERNAL_DECL void *duk_heap_mem_alloc(duk_heap *heap, duk_size_t size);
-DUK_INTERNAL_DECL void *duk_heap_mem_alloc_zeroed(duk_heap *heap, duk_size_t size);
-DUK_INTERNAL_DECL void *duk_heap_mem_realloc(duk_heap *heap, void *ptr, duk_size_t newsize);
-DUK_INTERNAL_DECL void *duk_heap_mem_realloc_indirect(duk_heap *heap, duk_mem_getptr cb, void *ud, duk_size_t newsize);
-DUK_INTERNAL_DECL void duk_heap_mem_free(duk_heap *heap, void *ptr);
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-DUK_INTERNAL_DECL void duk_tval_incref(duk_tval *tv);
-#endif
-#if 0 /* unused */
-DUK_INTERNAL_DECL void duk_tval_incref_allownull(duk_tval *tv);
-#endif
-DUK_INTERNAL_DECL void duk_tval_decref(duk_hthread *thr, duk_tval *tv);
-#if 0 /* unused */
-DUK_INTERNAL_DECL void duk_tval_decref_allownull(duk_hthread *thr, duk_tval *tv);
-#endif
-#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-DUK_INTERNAL_DECL void duk_heaphdr_incref(duk_heaphdr *h);
-#endif
-#if 0 /* unused */
-DUK_INTERNAL_DECL void duk_heaphdr_incref_allownull(duk_heaphdr *h);
-#endif
-DUK_INTERNAL_DECL void duk_heaphdr_decref(duk_hthread *thr, duk_heaphdr *h);
-DUK_INTERNAL_DECL void duk_heaphdr_decref_allownull(duk_hthread *thr, duk_heaphdr *h);
-DUK_INTERNAL_DECL void duk_heaphdr_refzero(duk_hthread *thr, duk_heaphdr *h);
-DUK_INTERNAL_DECL void duk_heaphdr_refcount_finalize(duk_hthread *thr, duk_heaphdr *hdr);
-#else
-/* no refcounting */
-#endif
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
-DUK_INTERNAL_DECL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t flags);
-#endif
-
-DUK_INTERNAL_DECL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len);
-
-#endif /* DUK_HEAP_H_INCLUDED */
-#line 1 "duk_debugger.h"
-#ifndef DUK_DEBUGGER_H_INCLUDED
-#define DUK_DEBUGGER_H_INCLUDED
-
-/* Debugger protocol version is defined in the public API header. */
-
-/* Initial bytes for markers. */
-#define DUK_DBG_IB_EOM 0x00
-#define DUK_DBG_IB_REQUEST 0x01
-#define DUK_DBG_IB_REPLY 0x02
-#define DUK_DBG_IB_ERROR 0x03
-#define DUK_DBG_IB_NOTIFY 0x04
-
-/* Other initial bytes. */
-#define DUK_DBG_IB_INT4 0x10
-#define DUK_DBG_IB_STR4 0x11
-#define DUK_DBG_IB_STR2 0x12
-#define DUK_DBG_IB_BUF4 0x13
-#define DUK_DBG_IB_BUF2 0x14
-#define DUK_DBG_IB_UNUSED 0x15
-#define DUK_DBG_IB_UNDEFINED 0x16
-#define DUK_DBG_IB_NULL 0x17
-#define DUK_DBG_IB_TRUE 0x18
-#define DUK_DBG_IB_FALSE 0x19
-#define DUK_DBG_IB_NUMBER 0x1a
-#define DUK_DBG_IB_OBJECT 0x1b
-#define DUK_DBG_IB_POINTER 0x1c
-#define DUK_DBG_IB_LIGHTFUNC 0x1d
-#define DUK_DBG_IB_HEAPPTR 0x1e
-/* The short string/integer initial bytes starting from 0x60 don't have
- * defines now.
- */
-
-/* Error codes. */
-#define DUK_DBG_ERR_UNKNOWN 0x00
-#define DUK_DBG_ERR_UNSUPPORTED 0x01
-#define DUK_DBG_ERR_TOOMANY 0x02
-#define DUK_DBG_ERR_NOTFOUND 0x03
-#define DUK_DBG_ERR_APPLICATION 0x04
-
-/* Commands and notifys initiated by Duktape. */
-#define DUK_DBG_CMD_STATUS 0x01
-#define DUK_DBG_CMD_PRINT 0x02
-#define DUK_DBG_CMD_ALERT 0x03
-#define DUK_DBG_CMD_LOG 0x04
-#define DUK_DBG_CMD_THROW 0x05
-#define DUK_DBG_CMD_DETACHING 0x06
-#define DUK_DBG_CMD_APPNOTIFY 0x07
-
-/* Commands initiated by debug client. */
-#define DUK_DBG_CMD_BASICINFO 0x10
-#define DUK_DBG_CMD_TRIGGERSTATUS 0x11
-#define DUK_DBG_CMD_PAUSE 0x12
-#define DUK_DBG_CMD_RESUME 0x13
-#define DUK_DBG_CMD_STEPINTO 0x14
-#define DUK_DBG_CMD_STEPOVER 0x15
-#define DUK_DBG_CMD_STEPOUT 0x16
-#define DUK_DBG_CMD_LISTBREAK 0x17
-#define DUK_DBG_CMD_ADDBREAK 0x18
-#define DUK_DBG_CMD_DELBREAK 0x19
-#define DUK_DBG_CMD_GETVAR 0x1a
-#define DUK_DBG_CMD_PUTVAR 0x1b
-#define DUK_DBG_CMD_GETCALLSTACK 0x1c
-#define DUK_DBG_CMD_GETLOCALS 0x1d
-#define DUK_DBG_CMD_EVAL 0x1e
-#define DUK_DBG_CMD_DETACH 0x1f
-#define DUK_DBG_CMD_DUMPHEAP 0x20
-#define DUK_DBG_CMD_GETBYTECODE 0x21
-#define DUK_DBG_CMD_APPREQUEST 0x22
-#define DUK_DBG_CMD_GETHEAPOBJINFO 0x23
-#define DUK_DBG_CMD_GETOBJPROPDESC 0x24
-#define DUK_DBG_CMD_GETOBJPROPDESCRANGE 0x25
-
-/* The low 8 bits map directly to duk_hobject.h DUK_PROPDESC_FLAG_xxx.
- * The remaining flags are specific to the debugger.
- */
-#define DUK_DBG_PROPFLAG_INTERNAL (1 << 8)
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_INTERNAL_DECL void duk_debug_do_detach(duk_heap *heap);
-
-DUK_INTERNAL_DECL duk_bool_t duk_debug_read_peek(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_debug_write_flush(duk_hthread *thr);
-
-DUK_INTERNAL_DECL void duk_debug_skip_bytes(duk_hthread *thr, duk_size_t length);
-DUK_INTERNAL_DECL void duk_debug_skip_byte(duk_hthread *thr);
-
-DUK_INTERNAL_DECL void duk_debug_read_bytes(duk_hthread *thr, duk_uint8_t *data, duk_size_t length);
-DUK_INTERNAL_DECL duk_uint8_t duk_debug_read_byte(duk_hthread *thr);
-DUK_INTERNAL_DECL duk_int32_t duk_debug_read_int(duk_hthread *thr);
-DUK_INTERNAL_DECL duk_hstring *duk_debug_read_hstring(duk_hthread *thr);
-/* XXX: exposed duk_debug_read_pointer */
-/* XXX: exposed duk_debug_read_buffer */
-/* XXX: exposed duk_debug_read_hbuffer */
-#if 0
-DUK_INTERNAL_DECL duk_heaphdr *duk_debug_read_heapptr(duk_hthread *thr);
-#endif
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL_DECL duk_heaphdr *duk_debug_read_any_ptr(duk_hthread *thr);
-#endif
-DUK_INTERNAL_DECL duk_tval *duk_debug_read_tval(duk_hthread *thr);
-
-DUK_INTERNAL_DECL void duk_debug_write_bytes(duk_hthread *thr, const duk_uint8_t *data, duk_size_t length);
-DUK_INTERNAL_DECL void duk_debug_write_byte(duk_hthread *thr, duk_uint8_t x);
-DUK_INTERNAL_DECL void duk_debug_write_unused(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_debug_write_undefined(duk_hthread *thr);
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL_DECL void duk_debug_write_null(duk_hthread *thr);
-#endif
-DUK_INTERNAL_DECL void duk_debug_write_boolean(duk_hthread *thr, duk_uint_t val);
-DUK_INTERNAL_DECL void duk_debug_write_int(duk_hthread *thr, duk_int32_t x);
-DUK_INTERNAL_DECL void duk_debug_write_uint(duk_hthread *thr, duk_uint32_t x);
-DUK_INTERNAL_DECL void duk_debug_write_string(duk_hthread *thr, const char *data, duk_size_t length);
-DUK_INTERNAL_DECL void duk_debug_write_cstring(duk_hthread *thr, const char *data);
-DUK_INTERNAL_DECL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h);
-DUK_INTERNAL_DECL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length);
-DUK_INTERNAL_DECL void duk_debug_write_hbuffer(duk_hthread *thr, duk_hbuffer *h);
-DUK_INTERNAL_DECL void duk_debug_write_pointer(duk_hthread *thr, void *ptr);
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP) || defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL_DECL void duk_debug_write_heapptr(duk_hthread *thr, duk_heaphdr *h);
-#endif
-DUK_INTERNAL_DECL void duk_debug_write_hobject(duk_hthread *thr, duk_hobject *obj);
-DUK_INTERNAL_DECL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv);
-#if 0 /* unused */
-DUK_INTERNAL_DECL void duk_debug_write_request(duk_hthread *thr, duk_small_uint_t command);
-#endif
-DUK_INTERNAL_DECL void duk_debug_write_reply(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_debug_write_error_eom(duk_hthread *thr, duk_small_uint_t err_code, const char *msg);
-DUK_INTERNAL_DECL void duk_debug_write_notify(duk_hthread *thr, duk_small_uint_t command);
-DUK_INTERNAL_DECL void duk_debug_write_eom(duk_hthread *thr);
-
-DUK_INTERNAL_DECL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr);
-DUK_INTERNAL_DECL void duk_debug_send_status(duk_hthread *thr);
-#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
-DUK_INTERNAL_DECL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal);
-#endif
-
-DUK_INTERNAL_DECL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc);
-DUK_INTERNAL_DECL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block);
-
-DUK_INTERNAL_DECL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line);
-DUK_INTERNAL_DECL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_uint_t breakpoint_index);
-#endif
-
-#endif /* DUK_DEBUGGER_H_INCLUDED */
-#line 1 "duk_debug.h"
-/*
- * Debugging macros, DUK_DPRINT() and its variants in particular.
- *
- * DUK_DPRINT() allows formatted debug prints, and supports standard
- * and Duktape specific formatters. See duk_debug_vsnprintf.c for details.
- *
- * DUK_D(x), DUK_DD(x), and DUK_DDD(x) are used together with log macros
- * for technical reasons. They are concretely used to hide 'x' from the
- * compiler when the corresponding log level is disabled. This allows
- * clean builds on non-C99 compilers, at the cost of more verbose code.
- * Examples:
- *
- * DUK_D(DUK_DPRINT("foo"));
- * DUK_DD(DUK_DDPRINT("foo"));
- * DUK_DDD(DUK_DDDPRINT("foo"));
- *
- * This approach is preferable to the old "double parentheses" hack because
- * double parentheses make the C99 solution worse: __FILE__ and __LINE__ can
- * no longer be added transparently without going through globals, which
- * works poorly with threading.
- */
-
-#ifndef DUK_DEBUG_H_INCLUDED
-#define DUK_DEBUG_H_INCLUDED
-
-#ifdef DUK_USE_DEBUG
-
-#if defined(DUK_USE_DPRINT)
-#define DUK_D(x) x
-#else
-#define DUK_D(x) do { } while (0) /* omit */
-#endif
-
-#if defined(DUK_USE_DDPRINT)
-#define DUK_DD(x) x
-#else
-#define DUK_DD(x) do { } while (0) /* omit */
-#endif
-
-#if defined(DUK_USE_DDDPRINT)
-#define DUK_DDD(x) x
-#else
-#define DUK_DDD(x) do { } while (0) /* omit */
-#endif
-
-/*
- * Exposed debug macros: debugging enabled
- */
-
-#define DUK_LEVEL_DEBUG 1
-#define DUK_LEVEL_DDEBUG 2
-#define DUK_LEVEL_DDDEBUG 3
-
-#ifdef DUK_USE_VARIADIC_MACROS
-
-/* Note: combining __FILE__, __LINE__, and __func__ into fmt would be
- * possible compile time, but waste some space with shared function names.
- */
-#define DUK__DEBUG_LOG(lev,...) duk_debug_log((duk_small_int_t) (lev), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, DUK_FUNC_MACRO, __VA_ARGS__);
-
-#define DUK_DPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DEBUG, __VA_ARGS__)
-
-#ifdef DUK_USE_DDPRINT
-#define DUK_DDPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DDEBUG, __VA_ARGS__)
-#else
-#define DUK_DDPRINT(...)
-#endif
-
-#ifdef DUK_USE_DDDPRINT
-#define DUK_DDDPRINT(...) DUK__DEBUG_LOG(DUK_LEVEL_DDDEBUG, __VA_ARGS__)
-#else
-#define DUK_DDDPRINT(...)
-#endif
-
-#else /* DUK_USE_VARIADIC_MACROS */
-
-#define DUK__DEBUG_STASH(lev) \
- (void) DUK_SNPRINTF(duk_debug_file_stash, DUK_DEBUG_STASH_SIZE, "%s", (const char *) DUK_FILE_MACRO), \
- duk_debug_file_stash[DUK_DEBUG_STASH_SIZE - 1] = (char) 0; \
- (void) DUK_SNPRINTF(duk_debug_line_stash, DUK_DEBUG_STASH_SIZE, "%ld", (long) DUK_LINE_MACRO), \
- duk_debug_line_stash[DUK_DEBUG_STASH_SIZE - 1] = (char) 0; \
- (void) DUK_SNPRINTF(duk_debug_func_stash, DUK_DEBUG_STASH_SIZE, "%s", (const char *) DUK_FUNC_MACRO), \
- duk_debug_func_stash[DUK_DEBUG_STASH_SIZE - 1] = (char) 0; \
- (void) (duk_debug_level_stash = (lev))
-
-/* Without variadic macros resort to comma expression trickery to handle debug
- * prints. This generates a lot of harmless warnings. These hacks are not
- * needed normally because DUK_D() and friends will hide the entire debug log
- * statement from the compiler.
- */
-
-#ifdef DUK_USE_DPRINT
-#define DUK_DPRINT DUK__DEBUG_STASH(DUK_LEVEL_DEBUG), (void) duk_debug_log /* args go here in parens */
-#else
-#define DUK_DPRINT 0 && /* args go here as a comma expression in parens */
-#endif
-
-#ifdef DUK_USE_DDPRINT
-#define DUK_DDPRINT DUK__DEBUG_STASH(DUK_LEVEL_DDEBUG), (void) duk_debug_log /* args go here in parens */
-#else
-#define DUK_DDPRINT 0 && /* args */
-#endif
-
-#ifdef DUK_USE_DDDPRINT
-#define DUK_DDDPRINT DUK__DEBUG_STASH(DUK_LEVEL_DDDEBUG), (void) duk_debug_log /* args go here in parens */
-#else
-#define DUK_DDDPRINT 0 && /* args */
-#endif
-
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-#else /* DUK_USE_DEBUG */
-
-/*
- * Exposed debug macros: debugging disabled
- */
-
-#define DUK_D(x) do { } while (0) /* omit */
-#define DUK_DD(x) do { } while (0) /* omit */
-#define DUK_DDD(x) do { } while (0) /* omit */
-
-#ifdef DUK_USE_VARIADIC_MACROS
-
-#define DUK_DPRINT(...)
-#define DUK_DDPRINT(...)
-#define DUK_DDDPRINT(...)
-
-#else /* DUK_USE_VARIADIC_MACROS */
-
-#define DUK_DPRINT 0 && /* args go here as a comma expression in parens */
-#define DUK_DDPRINT 0 && /* args */
-#define DUK_DDDPRINT 0 && /* args */
-
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-#endif /* DUK_USE_DEBUG */
-
-/*
- * Structs
- */
-
-#ifdef DUK_USE_DEBUG
-struct duk_fixedbuffer {
- duk_uint8_t *buffer;
- duk_size_t length;
- duk_size_t offset;
- duk_bool_t truncated;
-};
-#endif
-
-/*
- * Prototypes
- */
-
-#ifdef DUK_USE_DEBUG
-DUK_INTERNAL_DECL duk_int_t duk_debug_vsnprintf(char *str, duk_size_t size, const char *format, va_list ap);
-#if 0 /*unused*/
-DUK_INTERNAL_DECL duk_int_t duk_debug_snprintf(char *str, duk_size_t size, const char *format, ...);
-#endif
-DUK_INTERNAL_DECL void duk_debug_format_funcptr(char *buf, duk_size_t buf_size, duk_uint8_t *fptr, duk_size_t fptr_size);
-
-#ifdef DUK_USE_VARIADIC_MACROS
-DUK_INTERNAL_DECL void duk_debug_log(duk_small_int_t level, const char *file, duk_int_t line, const char *func, const char *fmt, ...);
-#else /* DUK_USE_VARIADIC_MACROS */
-/* parameter passing, not thread safe */
-#define DUK_DEBUG_STASH_SIZE 128
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL char duk_debug_file_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL_DECL char duk_debug_line_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL_DECL char duk_debug_func_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL_DECL duk_small_int_t duk_debug_level_stash;
-#endif
-DUK_INTERNAL_DECL void duk_debug_log(const char *fmt, ...);
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-DUK_INTERNAL_DECL void duk_fb_put_bytes(duk_fixedbuffer *fb, const duk_uint8_t *buffer, duk_size_t length);
-DUK_INTERNAL_DECL void duk_fb_put_byte(duk_fixedbuffer *fb, duk_uint8_t x);
-DUK_INTERNAL_DECL void duk_fb_put_cstring(duk_fixedbuffer *fb, const char *x);
-DUK_INTERNAL_DECL void duk_fb_sprintf(duk_fixedbuffer *fb, const char *fmt, ...);
-DUK_INTERNAL_DECL void duk_fb_put_funcptr(duk_fixedbuffer *fb, duk_uint8_t *fptr, duk_size_t fptr_size);
-DUK_INTERNAL_DECL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb);
-
-#endif /* DUK_USE_DEBUG */
-
-#endif /* DUK_DEBUG_H_INCLUDED */
-#line 1 "duk_error.h"
-/*
- * Error handling macros, assertion macro, error codes.
- *
- * There are three level of 'errors':
- *
- * 1. Ordinary errors, relative to a thread, cause a longjmp, catchable.
- * 2. Fatal errors, relative to a heap, cause fatal handler to be called.
- * 3. Panic errors, unrelated to a heap and cause a process exit.
- *
- * Panics are used by the default fatal error handler and by debug code
- * such as assertions. By providing a proper fatal error handler, user
- * code can avoid panics in non-debug builds.
- */
-
-#ifndef DUK_ERROR_H_INCLUDED
-#define DUK_ERROR_H_INCLUDED
-
-/*
- * Error codes: defined in duktape.h
- *
- * Error codes are used as a shorthand to throw exceptions from inside
- * the implementation. The appropriate Ecmascript object is constructed
- * based on the code. Ecmascript code throws objects directly. The error
- * codes are defined in the public API header because they are also used
- * by calling code.
- */
-
-/*
- * Normal error
- *
- * Normal error is thrown with a longjmp() through the current setjmp()
- * catchpoint record in the duk_heap. The 'curr_thread' of the duk_heap
- * identifies the throwing thread.
- *
- * Error formatting is usually unnecessary. The error macros provide a
- * zero argument version (no formatting) and separate macros for small
- * argument counts. Variadic macros are not used to avoid portability
- * issues and avoid the need for stash-based workarounds when they're not
- * available. Vararg calls are avoided for non-formatted error calls
- * because vararg call sites are larger than normal, and there are a lot
- * of call sites with no formatting.
- *
- * Note that special formatting provided by debug macros is NOT available.
- *
- * The _RAW variants allow the caller to specify file and line. This makes
- * it easier to write checked calls which want to use the call site of the
- * checked function, not the error macro call inside the checked function.
- */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-
-/* Because there are quite many call sites, pack error code (require at most
- * 8-bit) into a single argument.
- */
-#define DUK_ERROR(thr,err,msg) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (msg)); \
- } while (0)
-#define DUK_ERROR_RAW(thr,file,line,err,msg) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) (line); \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (msg)); \
- } while (0)
-
-#define DUK_ERROR_FMT1(thr,err,fmt,arg1) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1)); \
- } while (0)
-#define DUK_ERROR_RAW_FMT1(thr,file,line,err,fmt,arg1) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) (line); \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1)); \
- } while (0)
-
-#define DUK_ERROR_FMT2(thr,err,fmt,arg1,arg2) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2)); \
- } while (0)
-#define DUK_ERROR_RAW_FMT2(thr,file,line,err,fmt,arg1,arg2) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) (line); \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2)); \
- } while (0)
-
-#define DUK_ERROR_FMT3(thr,err,fmt,arg1,arg2,arg3) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2), (arg3)); \
- } while (0)
-#define DUK_ERROR_RAW_FMT3(thr,file,line,err,fmt,arg1,arg2,arg3) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) (line); \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2), (arg3)); \
- } while (0)
-
-#define DUK_ERROR_FMT4(thr,err,fmt,arg1,arg2,arg3,arg4) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) DUK_LINE_MACRO; \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), DUK_FILE_MACRO, (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2), (arg3), (arg4)); \
- } while (0)
-#define DUK_ERROR_RAW_FMT4(thr,file,line,err,fmt,arg1,arg2,arg3,arg4) do { \
- duk_errcode_t duk__err = (err); duk_int_t duk__line = (duk_int_t) (line); \
- DUK_ASSERT(duk__err >= 0 && duk__err <= 0xff); DUK_ASSERT(duk__line >= 0 && duk__line <= 0x00ffffffL); \
- duk_err_handle_error_fmt((thr), (file), (((duk_uint_t) duk__err) << 24) | ((duk_uint_t) duk__line), (fmt), (arg1), (arg2), (arg3), (arg4)); \
- } while (0)
-
-#else /* DUK_USE_VERBOSE_ERRORS */
-
-#define DUK_ERROR(thr,err,msg) duk_err_handle_error((thr), (err))
-#define DUK_ERROR_RAW(thr,file,line,err,msg) duk_err_handle_error((thr), (err))
-
-#define DUK_ERROR_FMT1(thr,err,fmt,arg1) DUK_ERROR((thr),(err),(fmt))
-#define DUK_ERROR_RAW_FMT1(thr,file,line,err,fmt,arg1) DUK_ERROR_RAW((thr),(file),(line),(err),(fmt))
-
-#define DUK_ERROR_FMT2(thr,err,fmt,arg1,arg2) DUK_ERROR((thr),(err),(fmt))
-#define DUK_ERROR_RAW_FMT2(thr,file,line,err,fmt,arg1,arg2) DUK_ERROR_RAW((thr),(file),(line),(err),(fmt))
-
-#define DUK_ERROR_FMT3(thr,err,fmt,arg1,arg2,arg3) DUK_ERROR((thr),(err),(fmt))
-#define DUK_ERROR_RAW_FMT3(thr,file,line,err,fmt,arg1,arg2,arg3) DUK_ERROR_RAW((thr),(file),(line),(err),(fmt))
-
-#define DUK_ERROR_FMT4(thr,err,fmt,arg1,arg2,arg3,arg4) DUK_ERROR((thr),(err),(fmt))
-#define DUK_ERROR_RAW_FMT4(thr,file,line,err,fmt,arg1,arg2,arg3,arg4) DUK_ERROR_RAW((thr),(file),(line),(err),(fmt))
-
-#endif /* DUK_USE_VERBOSE_ERRORS */
-
-/*
- * Fatal error
- *
- * There are no fatal error macros at the moment. There are so few call
- * sites that the fatal error handler is called directly.
- */
-
-/*
- * Panic error
- *
- * Panic errors are not relative to either a heap or a thread, and cause
- * DUK_PANIC() macro to be invoked. Unless a user provides DUK_USE_PANIC_HANDLER,
- * DUK_PANIC() calls a helper which prints out the error and causes a process
- * exit.
- *
- * The user can override the macro to provide custom handling. A macro is
- * used to allow the user to have inline panic handling if desired (without
- * causing a potentially risky function call).
- *
- * Panics are only used in debug code such as assertions, and by the default
- * fatal error handler.
- */
-
-#if defined(DUK_USE_PANIC_HANDLER)
-/* already defined, good */
-#define DUK_PANIC(code,msg) DUK_USE_PANIC_HANDLER((code),(msg))
-#else
-#define DUK_PANIC(code,msg) duk_default_panic_handler((code),(msg))
-#endif /* DUK_USE_PANIC_HANDLER */
-
-/*
- * Assert macro: failure causes panic.
- */
-
-#if defined(DUK_USE_ASSERTIONS)
-
-/* the message should be a compile time constant without formatting (less risk);
- * we don't care about assertion text size because they're not used in production
- * builds.
- */
-#define DUK_ASSERT(x) do { \
- if (!(x)) { \
- DUK_PANIC(DUK_ERR_ASSERTION_ERROR, \
- "assertion failed: " #x \
- " (" DUK_FILE_MACRO ":" DUK_MACRO_STRINGIFY(DUK_LINE_MACRO) ")"); \
- } \
- } while (0)
-
-/* Assertion compatible inside a comma expression, evaluates to void.
- * Currently not compatible with DUK_USE_PANIC_HANDLER() which may have
- * a statement block.
- */
-#if defined(DUK_USE_PANIC_HANDLER)
-/* XXX: resolve macro definition issue or call through a helper function? */
-#define DUK_ASSERT_EXPR(x) ((void) 0)
-#else
-#define DUK_ASSERT_EXPR(x) \
- ((void) ((x) ? 0 : (DUK_PANIC(DUK_ERR_ASSERTION_ERROR, \
- "assertion failed: " #x \
- " (" DUK_FILE_MACRO ":" DUK_MACRO_STRINGIFY(DUK_LINE_MACRO) ")"), 0)))
-#endif
-
-#else /* DUK_USE_ASSERTIONS */
-
-#define DUK_ASSERT(x) do { /* assertion omitted */ } while (0)
-
-#define DUK_ASSERT_EXPR(x) ((void) 0)
-
-#endif /* DUK_USE_ASSERTIONS */
-
-/* this variant is used when an assert would generate a compile warning by
- * being always true (e.g. >= 0 comparison for an unsigned value
- */
-#define DUK_ASSERT_DISABLE(x) do { /* assertion disabled */ } while (0)
-
-/*
- * Assertion helpers
- */
-
-#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_REFERENCE_COUNTING)
-#define DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(h) do { \
- DUK_ASSERT((h) == NULL || DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) (h)) > 0); \
- } while (0)
-#define DUK_ASSERT_REFCOUNT_NONZERO_TVAL(tv) do { \
- if ((tv) != NULL && DUK_TVAL_IS_HEAP_ALLOCATED((tv))) { \
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(DUK_TVAL_GET_HEAPHDR((tv))) > 0); \
- } \
- } while (0)
-#else
-#define DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(h) /* no refcount check */
-#define DUK_ASSERT_REFCOUNT_NONZERO_TVAL(tv) /* no refcount check */
-#endif
-
-#define DUK_ASSERT_TOP(ctx,n) DUK_ASSERT((duk_idx_t) duk_get_top((ctx)) == (duk_idx_t) (n))
-
-#if defined(DUK_USE_ASSERTIONS) && defined(DUK_USE_PACKED_TVAL)
-#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) do { \
- duk_double_union duk__assert_tmp_du; \
- duk__assert_tmp_du.d = (dval); \
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&duk__assert_tmp_du)); \
- } while (0)
-#else
-#define DUK_ASSERT_DOUBLE_IS_NORMALIZED(dval) /* nop */
-#endif
-
-/*
- * Helper for valstack space
- *
- * Caller of DUK_ASSERT_VALSTACK_SPACE() estimates the number of free stack entries
- * required for its own use, and any child calls which are not (a) Duktape API calls
- * or (b) Duktape calls which involve extending the valstack (e.g. getter call).
- */
-
-#define DUK_VALSTACK_ASSERT_EXTRA 5 /* this is added to checks to allow for Duktape
- * API calls in addition to function's own use
- */
-#if defined(DUK_USE_ASSERTIONS)
-#define DUK_ASSERT_VALSTACK_SPACE(thr,n) do { \
- DUK_ASSERT((thr) != NULL); \
- DUK_ASSERT((thr)->valstack_end - (thr)->valstack_top >= (n) + DUK_VALSTACK_ASSERT_EXTRA); \
- } while (0)
-#else
-#define DUK_ASSERT_VALSTACK_SPACE(thr,n) /* no valstack space check */
-#endif
-
-/*
- * Error throwing helpers
- *
- * The goal is to provide verbose and configurable error messages. Call
- * sites should be clean in source code and compile to a small footprint.
- * Small footprint is also useful for performance because small cold paths
- * reduce code cache pressure. Adding macros here only makes sense if there
- * are enough call sites to get concrete benefits.
- */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-/* Verbose errors with key/value summaries (non-paranoid) or without key/value
- * summaries (paranoid, for some security sensitive environments), the paranoid
- * vs. non-paranoid distinction affects only a few specific errors.
- */
-#if defined(DUK_USE_PARANOID_ERRORS)
-#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr,index,expectname,lowmemstr) do { \
- duk_err_require_type_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (index), (expectname)); \
- } while (0)
-#else /* DUK_USE_PARANOID_ERRORS */
-#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr,index,expectname,lowmemstr) do { \
- duk_err_require_type_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (index), (expectname)); \
- } while (0)
-#endif /* DUK_USE_PARANOID_ERRORS */
-
-#define DUK_ERROR_UNIMPLEMENTED(thr,msg) do { \
- DUK_ERROR((thr), DUK_ERR_UNIMPLEMENTED_ERROR, (msg)); \
- } while (0)
-#define DUK_ERROR_UNIMPLEMENTED_DEFMSG(thr) do { \
- duk_err_unimplemented_defmsg((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \
- } while (0)
-#define DUK_ERROR_UNSUPPORTED(thr,msg) do { \
- DUK_ERROR((thr), DUK_ERR_UNSUPPORTED_ERROR, (msg)); \
- } while (0)
-#ifndef DUK_USE_BYTECODE_DUMP_SUPPORT
-#define DUK_ERROR_UNSUPPORTED_DEFMSG(thr) do { \
- duk_err_unsupported_defmsg((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \
- } while (0)
-#endif
-#define DUK_ERROR_INTERNAL(thr,msg) do { \
- duk_err_internal((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \
- } while (0)
-#define DUK_ERROR_INTERNAL_DEFMSG(thr) do { \
- duk_err_internal_defmsg((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO); \
- } while (0)
-#define DUK_ERROR_ALLOC(thr,msg) do { \
- duk_err_alloc((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \
- } while (0)
-#define DUK_ERROR_ALLOC_DEFMSG(thr) do { \
- DUK_ERROR_ALLOC((thr), DUK_STR_ALLOC_FAILED); \
- } while (0)
-/* DUK_ERR_ASSERTION_ERROR: no macros needed */
-#define DUK_ERROR_API_INDEX(thr,index) do { \
- duk_err_api_index((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (index)); \
- } while (0)
-#define DUK_ERROR_API(thr,msg) do { \
- duk_err_api((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \
- } while (0)
-/* DUK_ERR_UNCAUGHT_ERROR: no macros needed */
-/* DUK_ERR_ERROR: no macros needed */
-/* DUK_ERR_EVAL: no macros needed */
-#define DUK_ERROR_RANGE(thr,msg) do { \
- duk_err_range((thr), DUK_FILE_MACRO, (duk_int_t) DUK_LINE_MACRO, (msg)); \
- } while (0)
-/* DUK_ERR_REFERENCE_ERROR: no macros needed */
-#define DUK_ERROR_SYNTAX(thr,msg) do { \
- DUK_ERROR((thr), DUK_ERR_SYNTAX_ERROR, (msg)); \
- } while (0)
-#define DUK_ERROR_TYPE(thr,msg) do { \
- DUK_ERROR((thr), DUK_ERR_TYPE_ERROR, (msg)); \
- } while (0)
-/* DUK_ERR_URI_ERROR: no macros needed */
-#else /* DUK_USE_VERBOSE_ERRORS */
-/* Non-verbose errors for low memory targets: no file, line, or message. */
-
-#define DUK_ERROR_REQUIRE_TYPE_INDEX(thr,index,expectname,lowmemstr) do { \
- duk_err_type((thr)); \
- } while (0)
-
-#define DUK_ERROR_UNIMPLEMENTED(thr,msg) do { \
- duk_err_unimplemented((thr)); \
- } while (0)
-#define DUK_ERROR_UNIMPLEMENTED_DEFMSG(thr) do { \
- duk_err_unimplemented((thr)); \
- } while (0)
-#define DUK_ERROR_UNSUPPORTED(thr,msg) do { \
- duk_err_unsupported((thr)); \
- } while (0)
-#define DUK_ERROR_UNSUPPORTED_DEFMSG(thr) do { \
- duk_err_unsupported((thr)); \
- } while (0)
-#define DUK_ERROR_INTERNAL(thr,msg) do { \
- duk_err_internal((thr)); \
- } while (0)
-#define DUK_ERROR_INTERNAL_DEFMSG(thr) do { \
- duk_err_internal((thr)); \
- } while (0)
-#define DUK_ERROR_ALLOC(thr,msg) do { \
- duk_err_alloc((thr)); \
- } while (0)
-#define DUK_ERROR_ALLOC_DEFMSG(thr) do { \
- duk_err_alloc((thr)); \
- } while (0)
-#define DUK_ERROR_API_INDEX(thr,index) do { \
- duk_err_api((thr)); \
- } while (0)
-#define DUK_ERROR_API(thr,msg) do { \
- duk_err_api((thr)); \
- } while (0)
-#define DUK_ERROR_RANGE(thr,msg) do { \
- duk_err_range((thr)); \
- } while (0)
-#define DUK_ERROR_SYNTAX(thr,msg) do { \
- duk_err_syntax((thr)); \
- } while (0)
-#define DUK_ERROR_TYPE(thr,msg) do { \
- duk_err_type((thr)); \
- } while (0)
-#endif /* DUK_USE_VERBOSE_ERRORS */
-
-/*
- * Prototypes
- */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_handle_error(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *msg));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_handle_error_fmt(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *fmt, ...));
-#else /* DUK_USE_VERBOSE_ERRORS */
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_handle_error(duk_hthread *thr, duk_errcode_t code));
-#endif /* DUK_USE_VERBOSE_ERRORS */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code, const char *msg, const char *filename, duk_int_t line));
-#else
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code));
-#endif
-
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t rc));
-
-#if defined(DUK_USE_AUGMENT_ERROR_CREATE)
-DUK_INTERNAL_DECL void duk_err_augment_error_create(duk_hthread *thr, duk_hthread *thr_callstack, const char *filename, duk_int_t line, duk_bool_t noblame_fileline);
-#endif
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
-DUK_INTERNAL_DECL void duk_err_augment_error_throw(duk_hthread *thr);
-#endif
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-#if defined(DUK_USE_PARANOID_ERRORS)
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index, const char *expect_name));
-#else
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index, const char *expect_name));
-#endif
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_api_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_api(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_range(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_unimplemented_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber));
-#ifndef DUK_USE_BYTECODE_DUMP_SUPPORT
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_unsupported_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber));
-#endif
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_internal_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_internal(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_alloc(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message));
-#else /* DUK_VERBOSE_ERRORS */
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_range(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_syntax(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_type(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_api(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_unimplemented(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_unsupported(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_internal(duk_hthread *thr));
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_alloc(duk_hthread *thr));
-#endif /* DUK_VERBOSE_ERRORS */
-
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_err_longjmp(duk_hthread *thr));
-
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_default_fatal_handler(duk_context *ctx, duk_errcode_t code, const char *msg));
-
-#if !defined(DUK_USE_PANIC_HANDLER)
-DUK_NORETURN(DUK_INTERNAL_DECL void duk_default_panic_handler(duk_errcode_t code, const char *msg));
-#endif
-
-DUK_INTERNAL_DECL void duk_err_setup_heap_ljstate(duk_hthread *thr, duk_small_int_t lj_type);
-
-DUK_INTERNAL_DECL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_errcode_t err_code);
-
-#endif /* DUK_ERROR_H_INCLUDED */
-#line 1 "duk_unicode.h"
-/*
- * Unicode helpers
- */
-
-#ifndef DUK_UNICODE_H_INCLUDED
-#define DUK_UNICODE_H_INCLUDED
-
-/*
- * UTF-8 / XUTF-8 / CESU-8 constants
- */
-
-#define DUK_UNICODE_MAX_XUTF8_LENGTH 7 /* up to 36 bit codepoints */
-#define DUK_UNICODE_MAX_XUTF8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */
-#define DUK_UNICODE_MAX_CESU8_LENGTH 6 /* all codepoints up to U+10FFFF */
-#define DUK_UNICODE_MAX_CESU8_BMP_LENGTH 3 /* all codepoints up to U+FFFF */
-
-/*
- * Useful Unicode codepoints
- *
- * Integer constants must be signed to avoid unexpected coercions
- * in comparisons.
- */
-
-#define DUK_UNICODE_CP_ZWNJ 0x200cL /* zero-width non-joiner */
-#define DUK_UNICODE_CP_ZWJ 0x200dL /* zero-width joiner */
-#define DUK_UNICODE_CP_REPLACEMENT_CHARACTER 0xfffdL /* http://en.wikipedia.org/wiki/Replacement_character#Replacement_character */
-
-/*
- * ASCII character constants
- *
- * C character literals like 'x' have a platform specific value and do
- * not match ASCII (UTF-8) values on e.g. EBCDIC platforms. So, use
- * these (admittedly awkward) constants instead. These constants must
- * also have signed values to avoid unexpected coercions in comparisons.
- *
- * http://en.wikipedia.org/wiki/ASCII
- */
-
-#define DUK_ASC_NUL 0x00
-#define DUK_ASC_SOH 0x01
-#define DUK_ASC_STX 0x02
-#define DUK_ASC_ETX 0x03
-#define DUK_ASC_EOT 0x04
-#define DUK_ASC_ENQ 0x05
-#define DUK_ASC_ACK 0x06
-#define DUK_ASC_BEL 0x07
-#define DUK_ASC_BS 0x08
-#define DUK_ASC_HT 0x09
-#define DUK_ASC_LF 0x0a
-#define DUK_ASC_VT 0x0b
-#define DUK_ASC_FF 0x0c
-#define DUK_ASC_CR 0x0d
-#define DUK_ASC_SO 0x0e
-#define DUK_ASC_SI 0x0f
-#define DUK_ASC_DLE 0x10
-#define DUK_ASC_DC1 0x11
-#define DUK_ASC_DC2 0x12
-#define DUK_ASC_DC3 0x13
-#define DUK_ASC_DC4 0x14
-#define DUK_ASC_NAK 0x15
-#define DUK_ASC_SYN 0x16
-#define DUK_ASC_ETB 0x17
-#define DUK_ASC_CAN 0x18
-#define DUK_ASC_EM 0x19
-#define DUK_ASC_SUB 0x1a
-#define DUK_ASC_ESC 0x1b
-#define DUK_ASC_FS 0x1c
-#define DUK_ASC_GS 0x1d
-#define DUK_ASC_RS 0x1e
-#define DUK_ASC_US 0x1f
-#define DUK_ASC_SPACE 0x20
-#define DUK_ASC_EXCLAMATION 0x21
-#define DUK_ASC_DOUBLEQUOTE 0x22
-#define DUK_ASC_HASH 0x23
-#define DUK_ASC_DOLLAR 0x24
-#define DUK_ASC_PERCENT 0x25
-#define DUK_ASC_AMP 0x26
-#define DUK_ASC_SINGLEQUOTE 0x27
-#define DUK_ASC_LPAREN 0x28
-#define DUK_ASC_RPAREN 0x29
-#define DUK_ASC_STAR 0x2a
-#define DUK_ASC_PLUS 0x2b
-#define DUK_ASC_COMMA 0x2c
-#define DUK_ASC_MINUS 0x2d
-#define DUK_ASC_PERIOD 0x2e
-#define DUK_ASC_SLASH 0x2f
-#define DUK_ASC_0 0x30
-#define DUK_ASC_1 0x31
-#define DUK_ASC_2 0x32
-#define DUK_ASC_3 0x33
-#define DUK_ASC_4 0x34
-#define DUK_ASC_5 0x35
-#define DUK_ASC_6 0x36
-#define DUK_ASC_7 0x37
-#define DUK_ASC_8 0x38
-#define DUK_ASC_9 0x39
-#define DUK_ASC_COLON 0x3a
-#define DUK_ASC_SEMICOLON 0x3b
-#define DUK_ASC_LANGLE 0x3c
-#define DUK_ASC_EQUALS 0x3d
-#define DUK_ASC_RANGLE 0x3e
-#define DUK_ASC_QUESTION 0x3f
-#define DUK_ASC_ATSIGN 0x40
-#define DUK_ASC_UC_A 0x41
-#define DUK_ASC_UC_B 0x42
-#define DUK_ASC_UC_C 0x43
-#define DUK_ASC_UC_D 0x44
-#define DUK_ASC_UC_E 0x45
-#define DUK_ASC_UC_F 0x46
-#define DUK_ASC_UC_G 0x47
-#define DUK_ASC_UC_H 0x48
-#define DUK_ASC_UC_I 0x49
-#define DUK_ASC_UC_J 0x4a
-#define DUK_ASC_UC_K 0x4b
-#define DUK_ASC_UC_L 0x4c
-#define DUK_ASC_UC_M 0x4d
-#define DUK_ASC_UC_N 0x4e
-#define DUK_ASC_UC_O 0x4f
-#define DUK_ASC_UC_P 0x50
-#define DUK_ASC_UC_Q 0x51
-#define DUK_ASC_UC_R 0x52
-#define DUK_ASC_UC_S 0x53
-#define DUK_ASC_UC_T 0x54
-#define DUK_ASC_UC_U 0x55
-#define DUK_ASC_UC_V 0x56
-#define DUK_ASC_UC_W 0x57
-#define DUK_ASC_UC_X 0x58
-#define DUK_ASC_UC_Y 0x59
-#define DUK_ASC_UC_Z 0x5a
-#define DUK_ASC_LBRACKET 0x5b
-#define DUK_ASC_BACKSLASH 0x5c
-#define DUK_ASC_RBRACKET 0x5d
-#define DUK_ASC_CARET 0x5e
-#define DUK_ASC_UNDERSCORE 0x5f
-#define DUK_ASC_GRAVE 0x60
-#define DUK_ASC_LC_A 0x61
-#define DUK_ASC_LC_B 0x62
-#define DUK_ASC_LC_C 0x63
-#define DUK_ASC_LC_D 0x64
-#define DUK_ASC_LC_E 0x65
-#define DUK_ASC_LC_F 0x66
-#define DUK_ASC_LC_G 0x67
-#define DUK_ASC_LC_H 0x68
-#define DUK_ASC_LC_I 0x69
-#define DUK_ASC_LC_J 0x6a
-#define DUK_ASC_LC_K 0x6b
-#define DUK_ASC_LC_L 0x6c
-#define DUK_ASC_LC_M 0x6d
-#define DUK_ASC_LC_N 0x6e
-#define DUK_ASC_LC_O 0x6f
-#define DUK_ASC_LC_P 0x70
-#define DUK_ASC_LC_Q 0x71
-#define DUK_ASC_LC_R 0x72
-#define DUK_ASC_LC_S 0x73
-#define DUK_ASC_LC_T 0x74
-#define DUK_ASC_LC_U 0x75
-#define DUK_ASC_LC_V 0x76
-#define DUK_ASC_LC_W 0x77
-#define DUK_ASC_LC_X 0x78
-#define DUK_ASC_LC_Y 0x79
-#define DUK_ASC_LC_Z 0x7a
-#define DUK_ASC_LCURLY 0x7b
-#define DUK_ASC_PIPE 0x7c
-#define DUK_ASC_RCURLY 0x7d
-#define DUK_ASC_TILDE 0x7e
-#define DUK_ASC_DEL 0x7f
-
-/*
- * Unicode tables
- */
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_ids_noa[791];
-#else
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_ids_noabmp[611];
-#endif
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_ids_m_let_noa[42];
-#else
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_ids_m_let_noabmp[24];
-#endif
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_idp_m_ids_noa[397];
-#else
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_idp_m_ids_noabmp[348];
-#endif
-
-/*
- * Automatically generated by extract_caseconv.py, do not edit!
- */
-
-extern const duk_uint8_t duk_unicode_caseconv_uc[1288];
-extern const duk_uint8_t duk_unicode_caseconv_lc[616];
-
-#if defined(DUK_USE_REGEXP_CANON_WORKAROUND)
-/*
- * Automatically generated by extract_caseconv.py, do not edit!
- */
-
-extern const duk_uint16_t duk_unicode_re_canon_lookup[65536];
-#endif
-
-/*
- * Extern
- */
-
-/* duk_unicode_support.c */
-#if !defined(DUK_SINGLE_FILE)
-DUK_INTERNAL_DECL const duk_uint8_t duk_unicode_xutf8_markers[7];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_digit[2];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_white[22];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_wordchar[8];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_digit[4];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_white[24];
-DUK_INTERNAL_DECL const duk_uint16_t duk_unicode_re_ranges_not_wordchar[10];
-DUK_INTERNAL_DECL const duk_int8_t duk_is_idchar_tab[128];
-#endif /* !DUK_SINGLE_FILE */
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_xutf8_length(duk_ucodepoint_t cp);
-#if defined(DUK_USE_ASSERTIONS)
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_get_cesu8_length(duk_ucodepoint_t cp);
-#endif
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_xutf8(duk_ucodepoint_t cp, duk_uint8_t *out);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_encode_cesu8(duk_ucodepoint_t cp, duk_uint8_t *out);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_decode_xutf8(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end, duk_ucodepoint_t *out_cp);
-DUK_INTERNAL_DECL duk_ucodepoint_t duk_unicode_decode_xutf8_checked(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end);
-DUK_INTERNAL_DECL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_whitespace(duk_codepoint_t cp);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_line_terminator(duk_codepoint_t cp);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_start(duk_codepoint_t cp);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_identifier_part(duk_codepoint_t cp);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_is_letter(duk_codepoint_t cp);
-DUK_INTERNAL_DECL void duk_unicode_case_convert_string(duk_hthread *thr, duk_bool_t uppercase);
-DUK_INTERNAL_DECL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp);
-DUK_INTERNAL_DECL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t cp);
-
-#endif /* DUK_UNICODE_H_INCLUDED */
-#line 1 "duk_json.h"
-/*
- * Defines for JSON, especially duk_bi_json.c.
- */
-
-#ifndef DUK_JSON_H_INCLUDED
-#define DUK_JSON_H_INCLUDED
-
-/* Encoding/decoding flags */
-#define DUK_JSON_FLAG_ASCII_ONLY (1 << 0) /* escape any non-ASCII characters */
-#define DUK_JSON_FLAG_AVOID_KEY_QUOTES (1 << 1) /* avoid key quotes when key is an ASCII Identifier */
-#define DUK_JSON_FLAG_EXT_CUSTOM (1 << 2) /* extended types: custom encoding */
-#define DUK_JSON_FLAG_EXT_COMPATIBLE (1 << 3) /* extended types: compatible encoding */
-
-/* How much stack to require on entry to object/array encode */
-#define DUK_JSON_ENC_REQSTACK 32
-
-/* How much stack to require on entry to object/array decode */
-#define DUK_JSON_DEC_REQSTACK 32
-
-/* How large a loop detection stack to use */
-#define DUK_JSON_ENC_LOOPARRAY 64
-
-/* Encoding state. Heap object references are all borrowed. */
-typedef struct {
- duk_hthread *thr;
- duk_bufwriter_ctx bw; /* output bufwriter */
- duk_hobject *h_replacer; /* replacer function */
- duk_hstring *h_gap; /* gap (if empty string, NULL) */
- duk_idx_t idx_proplist; /* explicit PropertyList */
- duk_idx_t idx_loop; /* valstack index of loop detection object */
- duk_small_uint_t flags;
- duk_small_uint_t flag_ascii_only;
- duk_small_uint_t flag_avoid_key_quotes;
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- duk_small_uint_t flag_ext_custom;
- duk_small_uint_t flag_ext_compatible;
- duk_small_uint_t flag_ext_custom_or_compatible;
-#endif
- duk_int_t recursion_depth;
- duk_int_t recursion_limit;
- duk_uint_t mask_for_undefined; /* type bit mask: types which certainly produce 'undefined' */
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- duk_small_uint_t stridx_custom_undefined;
- duk_small_uint_t stridx_custom_nan;
- duk_small_uint_t stridx_custom_neginf;
- duk_small_uint_t stridx_custom_posinf;
- duk_small_uint_t stridx_custom_function;
-#endif
- duk_hobject *visiting[DUK_JSON_ENC_LOOPARRAY]; /* indexed by recursion_depth */
-} duk_json_enc_ctx;
-
-typedef struct {
- duk_hthread *thr;
- const duk_uint8_t *p;
- const duk_uint8_t *p_start;
- const duk_uint8_t *p_end;
- duk_idx_t idx_reviver;
- duk_small_uint_t flags;
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- duk_small_uint_t flag_ext_custom;
- duk_small_uint_t flag_ext_compatible;
- duk_small_uint_t flag_ext_custom_or_compatible;
-#endif
- duk_int_t recursion_depth;
- duk_int_t recursion_limit;
-} duk_json_dec_ctx;
-
-#endif /* DUK_JSON_H_INCLUDED */
-#line 1 "duk_js.h"
-/*
- * Ecmascript execution, support primitives.
- */
-
-#ifndef DUK_JS_H_INCLUDED
-#define DUK_JS_H_INCLUDED
-
-/* Flags for call handling. */
-#define DUK_CALL_FLAG_IGNORE_RECLIMIT (1 << 0) /* duk_handle_call_xxx: call ignores C recursion limit (for errhandler calls) */
-#define DUK_CALL_FLAG_CONSTRUCTOR_CALL (1 << 1) /* duk_handle_call_xxx: constructor call (i.e. called as 'new Foo()') */
-#define DUK_CALL_FLAG_IS_RESUME (1 << 2) /* duk_handle_ecma_call_setup: setup for a resume() */
-#define DUK_CALL_FLAG_IS_TAILCALL (1 << 3) /* duk_handle_ecma_call_setup: setup for a tail call */
-#define DUK_CALL_FLAG_DIRECT_EVAL (1 << 4) /* call is a direct eval call */
-
-/* Flags for duk_js_equals_helper(). */
-#define DUK_EQUALS_FLAG_SAMEVALUE (1 << 0) /* use SameValue instead of non-strict equality */
-#define DUK_EQUALS_FLAG_STRICT (1 << 1) /* use strict equality instead of non-strict equality */
-
-/* Flags for duk_js_compare_helper(). */
-#define DUK_COMPARE_FLAG_EVAL_LEFT_FIRST (1 << 0) /* eval left argument first */
-#define DUK_COMPARE_FLAG_NEGATE (1 << 1) /* negate result */
-
-/* conversions, coercions, comparison, etc */
-DUK_INTERNAL_DECL duk_bool_t duk_js_toboolean(duk_tval *tv);
-DUK_INTERNAL_DECL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv);
-DUK_INTERNAL_DECL duk_double_t duk_js_tointeger_number(duk_double_t x);
-DUK_INTERNAL_DECL duk_double_t duk_js_tointeger(duk_hthread *thr, duk_tval *tv);
-DUK_INTERNAL_DECL duk_uint32_t duk_js_touint32(duk_hthread *thr, duk_tval *tv);
-DUK_INTERNAL_DECL duk_int32_t duk_js_toint32(duk_hthread *thr, duk_tval *tv);
-DUK_INTERNAL_DECL duk_uint16_t duk_js_touint16(duk_hthread *thr, duk_tval *tv);
-DUK_INTERNAL_DECL duk_small_int_t duk_js_to_arrayindex_raw_string(const duk_uint8_t *str, duk_uint32_t blen, duk_uarridx_t *out_idx);
-DUK_INTERNAL_DECL duk_uarridx_t duk_js_to_arrayindex_string_helper(duk_hstring *h);
-DUK_INTERNAL_DECL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags);
-DUK_INTERNAL_DECL duk_small_int_t duk_js_data_compare(const duk_uint8_t *buf1, const duk_uint8_t *buf2, duk_size_t len1, duk_size_t len2);
-DUK_INTERNAL_DECL duk_small_int_t duk_js_string_compare(duk_hstring *h1, duk_hstring *h2);
-#if 0 /* unused */
-DUK_INTERNAL_DECL duk_small_int_t duk_js_buffer_compare(duk_heap *heap, duk_hbuffer *h1, duk_hbuffer *h2);
-#endif
-DUK_INTERNAL_DECL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags);
-DUK_INTERNAL_DECL duk_bool_t duk_js_instanceof(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y);
-DUK_INTERNAL_DECL duk_bool_t duk_js_in(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y);
-DUK_INTERNAL_DECL duk_hstring *duk_js_typeof(duk_hthread *thr, duk_tval *tv_x);
-
-#define duk_js_equals(thr,tv_x,tv_y) \
- duk_js_equals_helper((thr), (tv_x), (tv_y), 0)
-#define duk_js_strict_equals(tv_x,tv_y) \
- duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_STRICT)
-#define duk_js_samevalue(tv_x,tv_y) \
- duk_js_equals_helper(NULL, (tv_x), (tv_y), DUK_EQUALS_FLAG_SAMEVALUE)
-
-/* E5 Sections 11.8.1, 11.8.5; x < y */
-#define duk_js_lessthan(thr,tv_x,tv_y) \
- duk_js_compare_helper((thr), (tv_x), (tv_Y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST)
-
-/* E5 Sections 11.8.2, 11.8.5; x > y --> y < x */
-#define duk_js_greaterthan(thr,tv_x,tv_y) \
- duk_js_compare_helper((thr), (tv_y), (tv_x), 0)
-
-/* E5 Sections 11.8.3, 11.8.5; x <= y --> not (x > y) --> not (y < x) */
-#define duk_js_lessthanorequal(thr,tv_x,tv_y) \
- duk_js_compare_helper((thr), (tv_y), (tv_x), DUK_COMPARE_FLAG_NEGATE)
-
-/* E5 Sections 11.8.4, 11.8.5; x >= y --> not (x < y) */
-#define duk_js_greaterthanorequal(thr,tv_x,tv_y) \
- duk_js_compare_helper((thr), (tv_x), (tv_y), DUK_COMPARE_FLAG_EVAL_LEFT_FIRST | DUK_COMPARE_FLAG_NEGATE)
-
-/* identifiers and environment handling */
-#if 0 /*unused*/
-DUK_INTERNAL duk_bool_t duk_js_hasvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name);
-#endif
-DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_bool_t throw_flag);
-DUK_INTERNAL_DECL duk_bool_t duk_js_getvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_bool_t throw_flag);
-DUK_INTERNAL_DECL void duk_js_putvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name, duk_tval *val, duk_bool_t strict);
-DUK_INTERNAL_DECL void duk_js_putvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_tval *val, duk_bool_t strict);
-#if 0 /*unused*/
-DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_envrec(duk_hthread *thr, duk_hobject *env, duk_hstring *name);
-#endif
-DUK_INTERNAL_DECL duk_bool_t duk_js_delvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name);
-DUK_INTERNAL_DECL duk_bool_t duk_js_declvar_activation(duk_hthread *thr, duk_activation *act, duk_hstring *name, duk_tval *val, duk_small_int_t prop_flags, duk_bool_t is_func_decl);
-DUK_INTERNAL_DECL void duk_js_init_activation_environment_records_delayed(duk_hthread *thr, duk_activation *act);
-DUK_INTERNAL_DECL void duk_js_close_environment_record(duk_hthread *thr, duk_hobject *env, duk_hobject *func, duk_size_t regbase);
-DUK_INTERNAL_DECL duk_hobject *duk_create_activation_environment_record(duk_hthread *thr, duk_hobject *func, duk_size_t idx_bottom);
-DUK_INTERNAL_DECL
-void duk_js_push_closure(duk_hthread *thr,
- duk_hcompiledfunction *fun_temp,
- duk_hobject *outer_var_env,
- duk_hobject *outer_lex_env,
- duk_bool_t add_auto_proto);
-
-/* call handling */
-DUK_INTERNAL_DECL duk_int_t duk_handle_call_protected(duk_hthread *thr, duk_idx_t num_stack_args, duk_small_uint_t call_flags);
-DUK_INTERNAL_DECL void duk_handle_call_unprotected(duk_hthread *thr, duk_idx_t num_stack_args, duk_small_uint_t call_flags);
-DUK_INTERNAL_DECL duk_int_t duk_handle_safe_call(duk_hthread *thr, duk_safe_call_function func, duk_idx_t num_stack_args, duk_idx_t num_stack_res);
-DUK_INTERNAL_DECL duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr, duk_idx_t num_stack_args, duk_small_uint_t call_flags);
-
-/* bytecode execution */
-DUK_INTERNAL_DECL void duk_js_execute_bytecode(duk_hthread *exec_thr);
-
-#endif /* DUK_JS_H_INCLUDED */
-#line 1 "duk_numconv.h"
-#ifndef DUK_NUMCONV_H_INCLUDED
-#define DUK_NUMCONV_H_INCLUDED
-
-/*
- * Number-to-string conversion. The semantics of these is very tightly
- * bound with the Ecmascript semantics required for call sites.
- */
-
-/* Output a specified number of digits instead of using the shortest
- * form. Used for toPrecision() and toFixed().
- */
-#define DUK_N2S_FLAG_FIXED_FORMAT (1 << 0)
-
-/* Force exponential format. Used for toExponential(). */
-#define DUK_N2S_FLAG_FORCE_EXP (1 << 1)
-
-/* If number would need zero padding (for whole number part), use
- * exponential format instead. E.g. if input number is 12300, 3
- * digits are generated ("123"), output "1.23e+4" instead of "12300".
- * Used for toPrecision().
- */
-#define DUK_N2S_FLAG_NO_ZERO_PAD (1 << 2)
-
-/* Digit count indicates number of fractions (i.e. an absolute
- * digit index instead of a relative one). Used together with
- * DUK_N2S_FLAG_FIXED_FORMAT for toFixed().
- */
-#define DUK_N2S_FLAG_FRACTION_DIGITS (1 << 3)
-
-/*
- * String-to-number conversion
- */
-
-/* Maximum exponent value when parsing numbers. This is not strictly
- * compliant as there should be no upper limit, but as we parse the
- * exponent without a bigint, impose some limit.
- */
-#define DUK_S2N_MAX_EXPONENT 1000000000
-
-/* Trim white space (= allow leading and trailing whitespace) */
-#define DUK_S2N_FLAG_TRIM_WHITE (1 << 0)
-
-/* Allow exponent */
-#define DUK_S2N_FLAG_ALLOW_EXP (1 << 1)
-
-/* Allow trailing garbage (e.g. treat "123foo" as "123) */
-#define DUK_S2N_FLAG_ALLOW_GARBAGE (1 << 2)
-
-/* Allow leading plus sign */
-#define DUK_S2N_FLAG_ALLOW_PLUS (1 << 3)
-
-/* Allow leading minus sign */
-#define DUK_S2N_FLAG_ALLOW_MINUS (1 << 4)
-
-/* Allow 'Infinity' */
-#define DUK_S2N_FLAG_ALLOW_INF (1 << 5)
-
-/* Allow fraction part */
-#define DUK_S2N_FLAG_ALLOW_FRAC (1 << 6)
-
-/* Allow naked fraction (e.g. ".123") */
-#define DUK_S2N_FLAG_ALLOW_NAKED_FRAC (1 << 7)
-
-/* Allow empty fraction (e.g. "123.") */
-#define DUK_S2N_FLAG_ALLOW_EMPTY_FRAC (1 << 8)
-
-/* Allow empty string to be interpreted as 0 */
-#define DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO (1 << 9)
-
-/* Allow leading zeroes (e.g. "0123" -> "123") */
-#define DUK_S2N_FLAG_ALLOW_LEADING_ZERO (1 << 10)
-
-/* Allow automatic detection of hex base ("0x" or "0X" prefix),
- * overrides radix argument and forces integer mode.
- */
-#define DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT (1 << 11)
-
-/* Allow automatic detection of octal base, overrides radix
- * argument and forces integer mode.
- */
-#define DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT (1 << 12)
-
-/*
- * Prototypes
- */
-
-DUK_INTERNAL_DECL void duk_numconv_stringify(duk_context *ctx, duk_small_int_t radix, duk_small_int_t digits, duk_small_uint_t flags);
-DUK_INTERNAL_DECL void duk_numconv_parse(duk_context *ctx, duk_small_int_t radix, duk_small_uint_t flags);
-
-#endif /* DUK_NUMCONV_H_INCLUDED */
-#line 1 "duk_bi_protos.h"
-/*
- * Prototypes for built-in functions not automatically covered by the
- * header declarations emitted by genbuiltins.py.
- */
-
-#ifndef DUK_BUILTIN_PROTOS_H_INCLUDED
-#define DUK_BUILTIN_PROTOS_H_INCLUDED
-
-/* Buffer size needed for duk_bi_date_format_timeval().
- * Accurate value is 32 + 1 for NUL termination:
- * >>> len('+123456-01-23T12:34:56.123+12:34')
- * 32
- * Include additional space to be safe.
- */
-#define DUK_BI_DATE_ISO8601_BUFSIZE 48
-
-/* Maximum length of CommonJS module identifier to resolve. Length includes
- * both current module ID, requested (possibly relative) module ID, and a
- * slash in between.
- */
-#define DUK_BI_COMMONJS_MODULE_ID_LIMIT 256
-
-/* Helpers exposed for internal use */
-DUK_INTERNAL_DECL void duk_bi_date_timeval_to_parts(duk_double_t d, duk_int_t *parts, duk_double_t *dparts, duk_small_uint_t flags);
-DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_timeval_from_dparts(duk_double_t *dparts, duk_small_uint_t flags);
-DUK_INTERNAL_DECL void duk_bi_date_format_timeval(duk_double_t timeval, duk_uint8_t *out_buf);
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_is_leap_year(duk_int_t year);
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_timeval_in_valid_range(duk_double_t x);
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_year_in_valid_range(duk_double_t year);
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_timeval_in_leeway_range(duk_double_t x);
-/* Built-in providers */
-#if defined(DUK_USE_DATE_NOW_GETTIMEOFDAY)
-DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_gettimeofday(duk_context *ctx);
-#endif
-#if defined(DUK_USE_DATE_NOW_TIME)
-DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_time(duk_context *ctx);
-#endif
-#if defined(DUK_USE_DATE_NOW_WINDOWS)
-DUK_INTERNAL_DECL duk_double_t duk_bi_date_get_now_windows(duk_context *ctx);
-#endif
-#if defined(DUK_USE_DATE_TZO_GMTIME_R) || defined(DUK_USE_DATE_TZO_GMTIME)
-DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d);
-#endif
-#if defined(DUK_USE_DATE_TZO_WINDOWS)
-DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d);
-#endif
-#if defined(DUK_USE_DATE_PRS_STRPTIME)
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_strptime(duk_context *ctx, const char *str);
-#endif
-#if defined(DUK_USE_DATE_PRS_GETDATE)
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_parse_string_getdate(duk_context *ctx, const char *str);
-#endif
-#if defined(DUK_USE_DATE_FMT_STRFTIME)
-DUK_INTERNAL_DECL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags);
-#endif
-
-DUK_INTERNAL_DECL
-void duk_bi_json_parse_helper(duk_context *ctx,
- duk_idx_t idx_value,
- duk_idx_t idx_reviver,
- duk_small_uint_t flags);
-DUK_INTERNAL_DECL
-void duk_bi_json_stringify_helper(duk_context *ctx,
- duk_idx_t idx_value,
- duk_idx_t idx_replacer,
- duk_idx_t idx_space,
- duk_small_uint_t flags);
-
-#endif /* DUK_BUILTIN_PROTOS_H_INCLUDED */
-#line 1 "duk_selftest.h"
-/*
- * Selftest code
- */
-
-#ifndef DUK_SELFTEST_H_INCLUDED
-#define DUK_SELFTEST_H_INCLUDED
-
-#if defined(DUK_USE_SELF_TESTS)
-DUK_INTERNAL_DECL void duk_selftest_run_tests(void);
-#endif
-
-#endif /* DUK_SELFTEST_H_INCLUDED */
-#line 78 "duk_internal.h"
-
-#endif /* DUK_INTERNAL_H_INCLUDED */
-#line 1 "duk_replacements.c"
-/*
- * Replacements for missing platform functions.
- *
- * Unlike the originals, fpclassify() and signbit() replacements don't
- * work on any floating point types, only doubles. The C typing here
- * mimics the standard prototypes.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_COMPUTED_NAN)
-DUK_INTERNAL double duk_computed_nan;
-#endif
-
-#if defined(DUK_USE_COMPUTED_INFINITY)
-DUK_INTERNAL double duk_computed_infinity;
-#endif
-
-#if defined(DUK_USE_REPL_FPCLASSIFY)
-DUK_INTERNAL int duk_repl_fpclassify(double x) {
- duk_double_union u;
- duk_uint_fast16_t expt;
- duk_small_int_t mzero;
-
- u.d = x;
- expt = (duk_uint_fast16_t) (u.us[DUK_DBL_IDX_US0] & 0x7ff0UL);
- if (expt > 0x0000UL && expt < 0x7ff0UL) {
- /* expt values [0x001,0x7fe] = normal */
- return DUK_FP_NORMAL;
- }
-
- mzero = (u.ui[DUK_DBL_IDX_UI1] == 0 && (u.ui[DUK_DBL_IDX_UI0] & 0x000fffffUL) == 0);
- if (expt == 0x0000UL) {
- /* expt 0x000 is zero/subnormal */
- if (mzero) {
- return DUK_FP_ZERO;
- } else {
- return DUK_FP_SUBNORMAL;
- }
- } else {
- /* expt 0xfff is infinite/nan */
- if (mzero) {
- return DUK_FP_INFINITE;
- } else {
- return DUK_FP_NAN;
- }
- }
-}
-#endif
-
-#if defined(DUK_USE_REPL_SIGNBIT)
-DUK_INTERNAL int duk_repl_signbit(double x) {
- duk_double_union u;
- u.d = x;
- return (int) (u.uc[DUK_DBL_IDX_UC0] & 0x80UL);
-}
-#endif
-
-#if defined(DUK_USE_REPL_ISFINITE)
-DUK_INTERNAL int duk_repl_isfinite(double x) {
- int c = DUK_FPCLASSIFY(x);
- if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) {
- return 0;
- } else {
- return 1;
- }
-}
-#endif
-
-#if defined(DUK_USE_REPL_ISNAN)
-DUK_INTERNAL int duk_repl_isnan(double x) {
- int c = DUK_FPCLASSIFY(x);
- return (c == DUK_FP_NAN);
-}
-#endif
-
-#if defined(DUK_USE_REPL_ISINF)
-DUK_INTERNAL int duk_repl_isinf(double x) {
- int c = DUK_FPCLASSIFY(x);
- return (c == DUK_FP_INFINITE);
-}
-#endif
-#line 1 "duk_strings.c"
-/*
- * Shared error message strings
- *
- * To minimize code footprint, try to share error messages inside Duktape
- * code. Modern compilers will do this automatically anyway, this is mostly
- * for older compilers.
- */
-
-/* include removed: duk_internal.h */
-
-/* Mostly API and built-in method related */
-DUK_INTERNAL const char *duk_str_internal_error = "internal error";
-DUK_INTERNAL const char *duk_str_invalid_count = "invalid count";
-DUK_INTERNAL const char *duk_str_invalid_call_args = "invalid call args";
-DUK_INTERNAL const char *duk_str_not_constructable = "not constructable";
-DUK_INTERNAL const char *duk_str_not_callable = "not callable";
-DUK_INTERNAL const char *duk_str_not_extensible = "not extensible";
-DUK_INTERNAL const char *duk_str_not_writable = "not writable";
-DUK_INTERNAL const char *duk_str_not_configurable = "not configurable";
-
-DUK_INTERNAL const char *duk_str_invalid_context = "invalid context";
-DUK_INTERNAL const char *duk_str_push_beyond_alloc_stack = "attempt to push beyond currently allocated stack";
-DUK_INTERNAL const char *duk_str_not_buffer = "not buffer"; /* still in use with verbose messages */
-DUK_INTERNAL const char *duk_str_unexpected_type = "unexpected type";
-DUK_INTERNAL const char *duk_str_defaultvalue_coerce_failed = "[[DefaultValue]] coerce failed";
-DUK_INTERNAL const char *duk_str_number_outside_range = "number outside range";
-DUK_INTERNAL const char *duk_str_not_object_coercible = "not object coercible";
-DUK_INTERNAL const char *duk_str_string_too_long = "string too long";
-DUK_INTERNAL const char *duk_str_buffer_too_long = "buffer too long";
-DUK_INTERNAL const char *duk_str_sprintf_too_long = "sprintf message too long";
-DUK_INTERNAL const char *duk_str_alloc_failed = "alloc failed";
-DUK_INTERNAL const char *duk_str_pop_too_many = "attempt to pop too many entries";
-DUK_INTERNAL const char *duk_str_wrong_buffer_type = "wrong buffer type";
-DUK_INTERNAL const char *duk_str_encode_failed = "encode failed";
-DUK_INTERNAL const char *duk_str_decode_failed = "decode failed";
-DUK_INTERNAL const char *duk_str_no_sourcecode = "no sourcecode";
-DUK_INTERNAL const char *duk_str_concat_result_too_long = "concat result too long";
-DUK_INTERNAL const char *duk_str_unimplemented = "unimplemented";
-DUK_INTERNAL const char *duk_str_unsupported = "unsupported";
-DUK_INTERNAL const char *duk_str_array_length_over_2g = "array length over 2G";
-
-/* JSON */
-DUK_INTERNAL const char *duk_str_fmt_ptr = "%p";
-DUK_INTERNAL const char *duk_str_fmt_invalid_json = "invalid json (at offset %ld)";
-DUK_INTERNAL const char *duk_str_jsondec_reclimit = "json decode recursion limit";
-DUK_INTERNAL const char *duk_str_jsonenc_reclimit = "json encode recursion limit";
-DUK_INTERNAL const char *duk_str_cyclic_input = "cyclic input";
-
-/* Object property access */
-DUK_INTERNAL const char *duk_str_proxy_revoked = "proxy revoked";
-DUK_INTERNAL const char *duk_str_invalid_base = "invalid base value";
-DUK_INTERNAL const char *duk_str_strict_caller_read = "attempt to read strict 'caller'";
-DUK_INTERNAL const char *duk_str_proxy_rejected = "proxy rejected";
-DUK_INTERNAL const char *duk_str_invalid_array_length = "invalid array length";
-DUK_INTERNAL const char *duk_str_array_length_write_failed = "array length write failed";
-DUK_INTERNAL const char *duk_str_array_length_not_writable = "array length non-writable";
-DUK_INTERNAL const char *duk_str_setter_undefined = "setter undefined";
-DUK_INTERNAL const char *duk_str_redefine_virt_prop = "attempt to redefine virtual property";
-DUK_INTERNAL const char *duk_str_invalid_descriptor = "invalid descriptor";
-DUK_INTERNAL const char *duk_str_property_is_virtual = "property is virtual";
-
-/* Compiler */
-DUK_INTERNAL const char *duk_str_parse_error = "parse error";
-DUK_INTERNAL const char *duk_str_duplicate_label = "duplicate label";
-DUK_INTERNAL const char *duk_str_invalid_label = "invalid label";
-DUK_INTERNAL const char *duk_str_invalid_array_literal = "invalid array literal";
-DUK_INTERNAL const char *duk_str_invalid_object_literal = "invalid object literal";
-DUK_INTERNAL const char *duk_str_invalid_var_declaration = "invalid variable declaration";
-DUK_INTERNAL const char *duk_str_cannot_delete_identifier = "cannot delete identifier";
-DUK_INTERNAL const char *duk_str_invalid_expression = "invalid expression";
-DUK_INTERNAL const char *duk_str_invalid_lvalue = "invalid lvalue";
-DUK_INTERNAL const char *duk_str_expected_identifier = "expected identifier";
-DUK_INTERNAL const char *duk_str_empty_expr_not_allowed = "empty expression not allowed";
-DUK_INTERNAL const char *duk_str_invalid_for = "invalid for statement";
-DUK_INTERNAL const char *duk_str_invalid_switch = "invalid switch statement";
-DUK_INTERNAL const char *duk_str_invalid_break_cont_label = "invalid break/continue label";
-DUK_INTERNAL const char *duk_str_invalid_return = "invalid return";
-DUK_INTERNAL const char *duk_str_invalid_try = "invalid try";
-DUK_INTERNAL const char *duk_str_invalid_throw = "invalid throw";
-DUK_INTERNAL const char *duk_str_with_in_strict_mode = "with in strict mode";
-DUK_INTERNAL const char *duk_str_func_stmt_not_allowed = "function statement not allowed";
-DUK_INTERNAL const char *duk_str_unterminated_stmt = "unterminated statement";
-DUK_INTERNAL const char *duk_str_invalid_arg_name = "invalid argument name";
-DUK_INTERNAL const char *duk_str_invalid_func_name = "invalid function name";
-DUK_INTERNAL const char *duk_str_invalid_getset_name = "invalid getter/setter name";
-DUK_INTERNAL const char *duk_str_func_name_required = "function name required";
-
-/* Regexp */
-DUK_INTERNAL const char *duk_str_invalid_quantifier_no_atom = "quantifier without preceding atom";
-DUK_INTERNAL const char *duk_str_invalid_quantifier_values = "quantifier values invalid (qmin > qmax)";
-DUK_INTERNAL const char *duk_str_quantifier_too_many_copies = "quantifier expansion requires too many atom copies";
-DUK_INTERNAL const char *duk_str_unexpected_closing_paren = "unexpected closing parenthesis";
-DUK_INTERNAL const char *duk_str_unexpected_end_of_pattern = "unexpected end of pattern";
-DUK_INTERNAL const char *duk_str_unexpected_regexp_token = "unexpected token in regexp";
-DUK_INTERNAL const char *duk_str_invalid_regexp_flags = "invalid regexp flags";
-DUK_INTERNAL const char *duk_str_invalid_backrefs = "invalid backreference(s)";
-
-/* Limits */
-DUK_INTERNAL const char *duk_str_valstack_limit = "valstack limit";
-DUK_INTERNAL const char *duk_str_callstack_limit = "callstack limit";
-DUK_INTERNAL const char *duk_str_catchstack_limit = "catchstack limit";
-DUK_INTERNAL const char *duk_str_prototype_chain_limit = "prototype chain limit";
-DUK_INTERNAL const char *duk_str_bound_chain_limit = "function call bound chain limit";
-DUK_INTERNAL const char *duk_str_c_callstack_limit = "C call stack depth limit";
-DUK_INTERNAL const char *duk_str_compiler_recursion_limit = "compiler recursion limit";
-DUK_INTERNAL const char *duk_str_bytecode_limit = "bytecode limit";
-DUK_INTERNAL const char *duk_str_reg_limit = "register limit";
-DUK_INTERNAL const char *duk_str_temp_limit = "temp limit";
-DUK_INTERNAL const char *duk_str_const_limit = "const limit";
-DUK_INTERNAL const char *duk_str_func_limit = "function limit";
-DUK_INTERNAL const char *duk_str_regexp_compiler_recursion_limit = "regexp compiler recursion limit";
-DUK_INTERNAL const char *duk_str_regexp_executor_recursion_limit = "regexp executor recursion limit";
-DUK_INTERNAL const char *duk_str_regexp_executor_step_limit = "regexp step limit";
-
-/* Misc */
-#line 1 "duk_debug_macros.c"
-/*
- * Debugging macro calls.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_DEBUG
-
-/*
- * Debugging enabled
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-
-#define DUK__DEBUG_BUFSIZE DUK_USE_DEBUG_BUFSIZE
-DUK_LOCAL char duk__debug_buf[DUK__DEBUG_BUFSIZE];
-
-DUK_LOCAL const char *duk__get_level_string(duk_small_int_t level) {
- switch ((int) level) {
- case DUK_LEVEL_DEBUG:
- return "D";
- case DUK_LEVEL_DDEBUG:
- return "DD";
- case DUK_LEVEL_DDDEBUG:
- return "DDD";
- }
- return "???";
-}
-
-#ifdef DUK_USE_DPRINT_COLORS
-
-/* http://en.wikipedia.org/wiki/ANSI_escape_code */
-#define DUK__TERM_REVERSE "\x1b[7m"
-#define DUK__TERM_BRIGHT "\x1b[1m"
-#define DUK__TERM_RESET "\x1b[0m"
-#define DUK__TERM_BLUE "\x1b[34m"
-#define DUK__TERM_RED "\x1b[31m"
-
-DUK_LOCAL const char *duk__get_term_1(duk_small_int_t level) {
- DUK_UNREF(level);
- return (const char *) DUK__TERM_RED;
-}
-
-DUK_LOCAL const char *duk__get_term_2(duk_small_int_t level) {
- switch ((int) level) {
- case DUK_LEVEL_DEBUG:
- return (const char *) (DUK__TERM_RESET DUK__TERM_BRIGHT);
- case DUK_LEVEL_DDEBUG:
- return (const char *) (DUK__TERM_RESET);
- case DUK_LEVEL_DDDEBUG:
- return (const char *) (DUK__TERM_RESET DUK__TERM_BLUE);
- }
- return (const char *) DUK__TERM_RESET;
-}
-
-DUK_LOCAL const char *duk__get_term_3(duk_small_int_t level) {
- DUK_UNREF(level);
- return (const char *) DUK__TERM_RESET;
-}
-
-#else
-
-DUK_LOCAL const char *duk__get_term_1(duk_small_int_t level) {
- DUK_UNREF(level);
- return (const char *) "";
-}
-
-DUK_LOCAL const char *duk__get_term_2(duk_small_int_t level) {
- DUK_UNREF(level);
- return (const char *) "";
-}
-
-DUK_LOCAL const char *duk__get_term_3(duk_small_int_t level) {
- DUK_UNREF(level);
- return (const char *) "";
-}
-
-#endif /* DUK_USE_DPRINT_COLORS */
-
-#ifdef DUK_USE_VARIADIC_MACROS
-
-DUK_INTERNAL void duk_debug_log(duk_small_int_t level, const char *file, duk_int_t line, const char *func, const char *fmt, ...) {
- va_list ap;
-
- va_start(ap, fmt);
-
- DUK_MEMZERO((void *) duk__debug_buf, (size_t) DUK__DEBUG_BUFSIZE);
- duk_debug_vsnprintf(duk__debug_buf, DUK__DEBUG_BUFSIZE - 1, fmt, ap);
-
- DUK_FPRINTF(DUK_STDERR, "%s[%s] %s:%ld (%s):%s %s%s\n",
- (const char *) duk__get_term_1(level),
- (const char *) duk__get_level_string(level),
- (const char *) file,
- (long) line,
- (const char *) func,
- (const char *) duk__get_term_2(level),
- (const char *) duk__debug_buf,
- (const char *) duk__get_term_3(level));
- DUK_FFLUSH(DUK_STDERR);
-
- va_end(ap);
-}
-
-#else /* DUK_USE_VARIADIC_MACROS */
-
-DUK_INTERNAL char duk_debug_file_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL char duk_debug_line_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL char duk_debug_func_stash[DUK_DEBUG_STASH_SIZE];
-DUK_INTERNAL duk_small_int_t duk_debug_level_stash;
-
-DUK_INTERNAL void duk_debug_log(const char *fmt, ...) {
- va_list ap;
- duk_small_int_t level = duk_debug_level_stash;
-
- va_start(ap, fmt);
-
- DUK_MEMZERO((void *) duk__debug_buf, (size_t) DUK__DEBUG_BUFSIZE);
- duk_debug_vsnprintf(duk__debug_buf, DUK__DEBUG_BUFSIZE - 1, fmt, ap);
-
- DUK_FPRINTF(DUK_STDERR, "%s[%s] %s:%s (%s):%s %s%s\n",
- (const char *) duk__get_term_1(level),
- (const char *) duk__get_level_string(duk_debug_level_stash),
- (const char *) duk_debug_file_stash,
- (const char *) duk_debug_line_stash,
- (const char *) duk_debug_func_stash,
- (const char *) duk__get_term_2(level),
- (const char *) duk__debug_buf,
- (const char *) duk__get_term_3(level));
- DUK_FFLUSH(DUK_STDERR);
-
- va_end(ap);
-}
-
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-#else /* DUK_USE_DEBUG */
-
-/*
- * Debugging disabled
- */
-
-#endif /* DUK_USE_DEBUG */
-#line 1 "duk_builtins.c"
-/*
- * Automatically generated by genbuiltins.py, do not edit!
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_ROM_STRINGS)
-#error ROM support not enabled, rerun make_dist.py with --rom-support
-#else /* DUK_USE_ROM_STRINGS */
-DUK_INTERNAL const duk_uint8_t duk_strings_data[1049] = {
-79,104,209,144,168,105,6,78,182,139,90,122,8,154,140,35,103,35,117,193,73,
-5,52,116,180,104,166,135,52,189,4,98,12,27,178,156,80,211,31,161,115,150,
-64,52,221,109,24,18,68,157,24,38,67,118,36,55,73,119,151,164,140,93,18,117,
-128,153,201,228,201,205,2,250,8,196,24,232,104,82,146,40,232,193,48,118,
-168,37,147,212,54,127,113,208,70,32,194,187,68,54,127,113,208,70,32,196,
-123,68,54,127,113,209,44,12,121,7,208,70,32,194,186,134,207,236,126,219,
-160,140,65,133,246,136,108,254,199,237,186,8,196,24,87,80,217,253,159,217,
-116,17,136,48,190,209,13,159,217,253,151,65,24,131,12,233,86,224,79,236,
-254,203,160,140,65,134,116,171,112,39,246,223,105,208,70,32,193,140,183,4,
-11,55,92,20,244,141,169,186,50,11,164,109,77,208,208,165,36,79,215,185,13,
-153,34,110,204,241,32,6,66,84,11,112,200,84,52,157,124,92,242,70,120,45,64,
-186,17,22,138,38,0,172,140,19,154,84,26,145,0,86,69,17,180,97,34,0,172,132,
-75,144,215,77,221,91,132,5,147,178,156,80,211,30,160,93,9,215,21,115,119,
-169,49,75,211,138,26,101,205,222,68,157,47,78,40,105,151,55,120,204,156,
-189,56,161,166,52,157,72,136,138,65,154,232,147,162,4,136,150,81,115,66,
-208,210,37,96,148,250,134,140,151,39,212,125,255,221,125,73,80,209,146,233,
-124,93,55,79,15,34,196,230,202,113,160,166,232,157,132,148,128,98,28,46,
-114,200,6,153,180,96,73,19,74,113,67,76,103,5,36,20,211,70,140,133,67,72,
-49,245,160,235,81,212,52,168,106,39,132,253,111,80,210,161,168,158,5,245,
-191,96,31,172,15,208,23,226,190,131,232,62,131,232,11,251,127,93,245,223,
-93,251,172,234,27,80,45,3,250,14,140,19,34,65,19,81,132,108,228,97,1,107,
-33,12,32,45,100,136,206,9,12,196,155,134,69,146,100,235,226,231,146,51,194,
-72,218,48,145,4,200,119,89,189,81,49,39,72,147,235,226,233,186,120,121,58,
-226,167,90,124,93,55,107,71,137,33,68,68,130,64,206,75,189,209,156,144,84,
-44,141,3,8,137,187,178,156,80,211,26,110,242,100,230,146,120,121,8,48,76,6,
-89,26,105,157,65,196,201,213,145,166,153,212,28,76,157,113,75,34,78,62,14,
-38,73,105,228,142,136,178,48,141,152,228,73,150,83,0,148,39,137,75,67,73,
-214,209,129,36,85,190,206,32,17,6,9,128,141,3,8,130,161,100,235,64,194,24,
-52,41,73,19,189,200,108,201,19,111,181,2,232,66,239,173,37,230,157,244,56,
-153,4,225,145,27,233,93,22,1,114,62,251,80,69,128,121,247,213,146,228,109,
-79,190,212,17,35,106,125,246,78,164,68,68,111,175,23,217,45,13,33,119,208,
-68,210,38,250,192,61,91,233,80,208,45,25,36,81,190,156,13,26,201,19,239,
-162,2,214,66,31,125,153,226,64,13,27,236,72,96,130,68,62,251,48,68,196,153,
-119,217,157,18,56,156,199,161,100,42,26,250,77,36,140,122,40,144,19,34,9,
-24,246,103,139,172,150,56,125,145,1,17,29,44,112,250,183,0,100,24,200,218,
-140,228,185,130,9,19,237,190,208,73,184,146,35,68,146,163,8,50,178,99,136,
-44,89,196,2,33,70,64,208,196,67,74,226,88,17,105,73,24,186,37,40,38,5,133,
-161,89,4,183,25,115,119,86,227,118,83,138,26,103,255,223,209,106,141,25,11,
-244,95,117,56,208,159,250,223,251,250,45,52,13,250,47,186,156,104,79,253,
-111,253,253,22,144,210,253,23,221,78,52,39,254,187,254,254,139,77,67,75,
-244,95,117,56,208,159,250,239,251,250,45,22,141,23,209,125,212,227,66,127,
-235,63,239,69,163,69,247,83,141,9,255,165,12,72,5,16,64,145,10,32,76,71,64,
-156,217,161,180,34,6,64,208,198,36,78,50,20,20,92,204,50,44,147,32,134,226,
-17,114,33,202,134,129,107,192,202,232,160,180,104,166,135,52,72,40,144,213,
-33,178,152,26,34,56,163,105,44,104,146,116,139,77,43,34,98,57,38,116,72,
-179,60,93,97,206,56,52,240,242,56,163,168,34,81,57,178,153,42,228,12,182,
-58,22,66,89,19,57,68,176,74,68,35,104,195,18,239,116,102,114,94,100,104,
-228,100,49,238,140,203,42,60,145,35,104,181,146,113,161,10,80,46,68,82,24,
-245,145,132,108,228,148,54,100,137,64,34,13,100,153,222,1,40,6,33,223,20,
-84,19,34,95,23,76,130,153,6,103,208,43,64,141,41,130,104,17,112,130,44,96,
-};
-#endif /* DUK_USE_ROM_STRINGS */
-
-#if defined(DUK_USE_ROM_OBJECTS)
-#error ROM support not enabled, rerun make_dist.py with --rom-support
-#else /* DUK_USE_ROM_OBJECTS */
-/* native functions: 149 */
-DUK_INTERNAL const duk_c_function duk_bi_native_functions[149] = {
- duk_bi_array_constructor,
- duk_bi_array_constructor_is_array,
- duk_bi_array_prototype_concat,
- duk_bi_array_prototype_indexof_shared,
- duk_bi_array_prototype_iter_shared,
- duk_bi_array_prototype_join_shared,
- duk_bi_array_prototype_pop,
- duk_bi_array_prototype_push,
- duk_bi_array_prototype_reduce_shared,
- duk_bi_array_prototype_reverse,
- duk_bi_array_prototype_shift,
- duk_bi_array_prototype_slice,
- duk_bi_array_prototype_sort,
- duk_bi_array_prototype_splice,
- duk_bi_array_prototype_to_string,
- duk_bi_array_prototype_unshift,
- duk_bi_arraybuffer_constructor,
- duk_bi_arraybuffer_isview,
- duk_bi_boolean_constructor,
- duk_bi_boolean_prototype_tostring_shared,
- duk_bi_buffer_compare_shared,
- duk_bi_buffer_constructor,
- duk_bi_buffer_prototype_tostring_shared,
- duk_bi_buffer_readfield,
- duk_bi_buffer_slice_shared,
- duk_bi_buffer_writefield,
- duk_bi_dataview_constructor,
- duk_bi_date_constructor,
- duk_bi_date_constructor_now,
- duk_bi_date_constructor_parse,
- duk_bi_date_constructor_utc,
- duk_bi_date_prototype_get_shared,
- duk_bi_date_prototype_get_timezone_offset,
- duk_bi_date_prototype_set_shared,
- duk_bi_date_prototype_set_time,
- duk_bi_date_prototype_to_json,
- duk_bi_date_prototype_tostring_shared,
- duk_bi_date_prototype_value_of,
- duk_bi_duktape_object_act,
- duk_bi_duktape_object_compact,
- duk_bi_duktape_object_dec,
- duk_bi_duktape_object_enc,
- duk_bi_duktape_object_fin,
- duk_bi_duktape_object_gc,
- duk_bi_duktape_object_info,
- duk_bi_error_constructor_shared,
- duk_bi_error_prototype_filename_getter,
- duk_bi_error_prototype_filename_setter,
- duk_bi_error_prototype_linenumber_getter,
- duk_bi_error_prototype_linenumber_setter,
- duk_bi_error_prototype_stack_getter,
- duk_bi_error_prototype_stack_setter,
- duk_bi_error_prototype_to_string,
- duk_bi_function_constructor,
- duk_bi_function_prototype,
- duk_bi_function_prototype_apply,
- duk_bi_function_prototype_bind,
- duk_bi_function_prototype_call,
- duk_bi_function_prototype_to_string,
- duk_bi_global_object_decode_uri,
- duk_bi_global_object_decode_uri_component,
- duk_bi_global_object_encode_uri,
- duk_bi_global_object_encode_uri_component,
- duk_bi_global_object_escape,
- duk_bi_global_object_eval,
- duk_bi_global_object_is_finite,
- duk_bi_global_object_is_nan,
- duk_bi_global_object_parse_float,
- duk_bi_global_object_parse_int,
- duk_bi_global_object_print_helper,
- duk_bi_global_object_require,
- duk_bi_global_object_unescape,
- duk_bi_json_object_parse,
- duk_bi_json_object_stringify,
- duk_bi_logger_constructor,
- duk_bi_logger_prototype_fmt,
- duk_bi_logger_prototype_log_shared,
- duk_bi_logger_prototype_raw,
- duk_bi_math_object_max,
- duk_bi_math_object_min,
- duk_bi_math_object_onearg_shared,
- duk_bi_math_object_random,
- duk_bi_math_object_twoarg_shared,
- duk_bi_nodejs_buffer_byte_length,
- duk_bi_nodejs_buffer_concat,
- duk_bi_nodejs_buffer_constructor,
- duk_bi_nodejs_buffer_copy,
- duk_bi_nodejs_buffer_fill,
- duk_bi_nodejs_buffer_is_buffer,
- duk_bi_nodejs_buffer_is_encoding,
- duk_bi_nodejs_buffer_tojson,
- duk_bi_nodejs_buffer_tostring,
- duk_bi_nodejs_buffer_write,
- duk_bi_number_constructor,
- duk_bi_number_prototype_to_exponential,
- duk_bi_number_prototype_to_fixed,
- duk_bi_number_prototype_to_locale_string,
- duk_bi_number_prototype_to_precision,
- duk_bi_number_prototype_to_string,
- duk_bi_number_prototype_value_of,
- duk_bi_object_constructor,
- duk_bi_object_constructor_create,
- duk_bi_object_constructor_define_properties,
- duk_bi_object_constructor_define_property,
- duk_bi_object_constructor_get_own_property_descriptor,
- duk_bi_object_constructor_is_extensible,
- duk_bi_object_constructor_is_sealed_frozen_shared,
- duk_bi_object_constructor_keys_shared,
- duk_bi_object_constructor_prevent_extensions,
- duk_bi_object_constructor_seal_freeze_shared,
- duk_bi_object_getprototype_shared,
- duk_bi_object_prototype_has_own_property,
- duk_bi_object_prototype_is_prototype_of,
- duk_bi_object_prototype_property_is_enumerable,
- duk_bi_object_prototype_to_locale_string,
- duk_bi_object_prototype_to_string,
- duk_bi_object_prototype_value_of,
- duk_bi_object_setprototype_shared,
- duk_bi_pointer_constructor,
- duk_bi_pointer_prototype_tostring_shared,
- duk_bi_proxy_constructor,
- duk_bi_regexp_constructor,
- duk_bi_regexp_prototype_exec,
- duk_bi_regexp_prototype_test,
- duk_bi_regexp_prototype_to_string,
- duk_bi_string_constructor,
- duk_bi_string_constructor_from_char_code,
- duk_bi_string_prototype_caseconv_shared,
- duk_bi_string_prototype_char_at,
- duk_bi_string_prototype_char_code_at,
- duk_bi_string_prototype_concat,
- duk_bi_string_prototype_indexof_shared,
- duk_bi_string_prototype_locale_compare,
- duk_bi_string_prototype_match,
- duk_bi_string_prototype_replace,
- duk_bi_string_prototype_search,
- duk_bi_string_prototype_slice,
- duk_bi_string_prototype_split,
- duk_bi_string_prototype_substr,
- duk_bi_string_prototype_substring,
- duk_bi_string_prototype_to_string,
- duk_bi_string_prototype_trim,
- duk_bi_thread_constructor,
- duk_bi_thread_current,
- duk_bi_thread_resume,
- duk_bi_thread_yield,
- duk_bi_type_error_thrower,
- duk_bi_typedarray_constructor,
- duk_bi_typedarray_set,
-};
-#if defined(DUK_USE_BUILTIN_INITJS)
-DUK_INTERNAL const duk_uint8_t duk_initjs_data[187] = {
-40,102,117,110,99,116,105,111,110,40,100,44,97,41,123,102,117,110,99,116,
-105,111,110,32,98,40,97,44,98,44,99,41,123,79,98,106,101,99,116,46,100,101,
-102,105,110,101,80,114,111,112,101,114,116,121,40,97,44,98,44,123,118,97,
-108,117,101,58,99,44,119,114,105,116,97,98,108,101,58,33,48,44,101,110,117,
-109,101,114,97,98,108,101,58,33,49,44,99,111,110,102,105,103,117,114,97,98,
-108,101,58,33,48,125,41,125,98,40,97,46,76,111,103,103,101,114,44,34,99,
-108,111,103,34,44,110,101,119,32,97,46,76,111,103,103,101,114,40,34,67,34,
-41,41,59,98,40,97,44,34,109,111,100,76,111,97,100,101,100,34,44,123,125,41,
-125,41,40,116,104,105,115,44,68,117,107,116,97,112,101,41,59,10,0,
-};
-#endif /* DUK_USE_BUILTIN_INITJS */
-#if defined(DUK_USE_DOUBLE_LE)
-DUK_INTERNAL const duk_uint8_t duk_builtins_data[3833] = {
-105,195,75,32,3,148,52,154,248,9,26,13,128,112,105,0,240,22,20,26,95,124,6,
-152,52,137,0,120,99,74,239,129,18,70,241,191,2,98,13,79,32,42,88,210,90,2,
-240,1,50,141,37,168,76,94,216,118,69,229,203,127,44,0,84,163,73,106,21,75,
-14,236,249,98,242,229,191,150,0,46,81,164,181,14,165,151,54,94,89,119,99,
-203,23,151,45,252,176,1,146,141,37,168,93,63,59,186,97,241,23,151,45,252,
-176,1,178,141,37,168,77,79,60,50,197,229,203,127,44,0,116,163,73,106,17,86,
-148,152,188,185,111,229,128,15,148,129,198,137,36,58,166,142,91,251,212,
-243,195,44,94,92,183,242,13,79,8,45,14,91,252,121,148,52,199,120,63,72,105,
-21,240,118,128,210,237,224,245,17,165,43,224,211,55,231,207,151,148,161,70,
-145,0,31,40,107,26,2,18,138,26,228,192,142,0,16,161,174,76,9,74,26,228,192,
-158,0,8,161,174,76,10,96,2,42,26,228,192,174,0,26,161,174,76,11,96,3,74,26,
-228,192,190,0,44,161,174,76,12,96,3,202,26,228,192,206,0,70,161,169,84,14,
-202,3,255,254,32,234,0,0,0,0,0,0,7,195,248,119,0,0,0,0,0,0,3,193,252,57,
-136,1,152,32,16,194,0,166,24,6,49,0,57,138,2,12,96,18,99,128,163,32,5,153,
-40,76,94,216,118,69,229,203,127,35,41,10,165,135,118,124,177,121,114,223,
-200,203,67,169,101,205,151,150,93,216,242,197,229,203,127,35,49,11,167,231,
-119,76,62,34,242,229,191,145,154,132,212,243,195,44,94,92,183,242,51,144,
-138,180,164,197,229,203,127,35,60,6,26,0,52,208,193,226,117,215,211,15,12,
-166,146,11,67,150,255,30,77,24,58,113,64,243,92,8,27,0,68,217,130,70,212,
-19,54,224,161,185,5,77,216,44,111,65,115,126,12,28,16,100,225,156,16,32,18,
-17,195,15,46,121,100,238,232,136,136,87,12,60,185,229,141,179,126,30,136,
-100,130,233,231,59,12,228,34,66,52,243,141,167,118,158,153,80,73,9,201,151,
-30,252,153,106,210,146,118,72,150,76,184,247,228,203,86,148,152,123,246,
-240,223,187,46,238,135,132,132,229,221,143,126,76,181,105,73,61,36,75,46,
-236,123,242,101,171,74,76,61,251,120,111,221,151,119,67,226,65,178,243,199,
-135,134,83,242,66,58,238,203,207,30,30,25,81,201,5,225,203,78,238,136,163,
-208,92,59,50,242,232,138,62,0,2,38,163,19,255,255,224,142,80,192,0,20,31,
-240,14,135,103,203,210,135,45,253,55,244,243,195,44,252,205,197,0,1,18,221,
-82,0,3,24,207,151,164,254,251,168,114,223,195,47,46,158,98,101,231,143,150,
-158,29,55,242,104,68,79,62,94,147,251,238,161,203,127,12,188,186,121,157,
-135,110,94,109,100,131,99,229,151,15,76,172,168,8,89,217,16,201,151,54,157,
-217,104,114,223,195,47,46,154,114,243,102,68,19,158,92,59,27,73,6,205,203,
-46,95,89,91,74,0,3,17,225,203,47,108,187,186,69,241,211,46,238,122,119,238,
-230,216,72,70,158,116,242,225,217,151,35,81,33,26,121,198,229,191,214,93,
-205,69,0,1,134,105,231,23,199,76,187,185,233,197,179,43,73,32,154,242,249,
-230,214,80,0,31,255,193,2,38,103,110,117,24,81,115,0,78,228,0,161,208,16,
-237,24,121,207,239,186,135,45,252,50,242,233,229,188,144,221,60,232,114,
-223,211,127,79,60,50,207,204,224,72,167,14,91,248,101,229,211,204,158,113,
-119,117,219,151,150,28,91,50,184,144,40,95,224,0,15,248,64,4,20,78,129,5,
-195,195,134,207,38,232,130,99,195,179,97,201,244,19,22,157,217,14,15,130,
-135,254,0,48,125,60,224,242,229,135,200,9,1,255,12,2,162,136,112,2,112,80,
-128,0,193,177,239,221,143,15,64,35,224,152,20,144,62,27,248,3,2,9,195,175,
-61,0,231,208,126,89,123,101,229,207,40,72,32,188,244,105,205,208,40,16,94,
-123,52,227,202,22,136,39,61,252,186,6,18,13,207,134,205,56,242,134,175,65,
-250,238,231,163,78,110,129,231,208,125,59,178,101,241,63,48,25,248,0,12,47,
-102,30,125,36,238,201,151,196,252,192,103,255,255,240,92,189,178,242,242,8,
-105,4,231,191,110,80,67,80,0,24,62,109,252,162,225,199,160,16,212,0,10,7,
-183,15,0,67,80,0,56,54,109,59,58,101,228,8,106,0,9,6,229,151,39,92,121,66,
-15,192,0,97,124,178,228,235,143,45,45,57,244,116,8,63,255,255,10,39,248,0,
-195,51,114,223,182,30,140,60,161,239,201,149,248,248,31,241,0,140,80,129,
-202,10,49,128,10,35,1,6,199,163,15,40,61,32,9,10,199,163,15,40,123,242,101,
-131,210,4,144,108,123,247,99,195,210,8,250,15,167,118,76,190,39,230,131,52,
-133,236,195,207,164,157,217,50,248,159,154,12,212,0,6,27,179,126,60,59,50,
-195,223,183,134,30,89,97,9,5,219,135,166,61,16,164,131,242,203,195,102,28,
-121,97,145,6,231,151,15,44,122,33,201,5,231,179,78,60,177,8,130,243,225,
-179,79,72,148,66,121,245,197,207,167,45,59,179,197,162,23,211,124,205,253,
-242,242,135,135,158,87,240,68,122,111,153,191,30,29,153,102,111,239,151,
-148,60,60,242,191,130,23,211,125,94,28,50,242,135,135,158,87,240,128,0,196,
-122,111,153,191,30,29,153,106,240,225,151,148,60,60,242,191,132,0,6,9,211,
-150,157,177,160,131,115,235,139,159,78,81,72,10,47,248,0,3,254,40,17,138,
-48,66,136,152,64,0,66,129,48,5,27,252,88,76,216,54,47,214,131,50,172,88,31,
-255,255,255,255,255,253,239,240,153,178,103,95,173,6,101,88,176,0,64,0,0,0,
-0,0,0,3,168,0,0,0,0,0,0,31,15,241,26,19,233,201,169,38,180,91,242,103,70,
-147,58,77,75,48,0,0,0,0,0,0,60,31,226,51,162,199,131,82,77,104,183,228,206,
-141,38,116,154,150,96,0,0,0,0,0,0,120,127,128,15,248,192,70,40,0,0,0,0,0,0,
-0,0,3,10,44,68,9,216,8,20,49,130,15,211,124,109,62,50,228,95,36,55,166,248,
-190,56,111,221,151,119,77,56,118,47,18,23,211,125,14,89,113,233,231,167,
-126,230,18,5,31,252,0,224,188,48,242,231,148,116,144,58,181,33,143,127,64,
-247,111,238,56,0,127,199,2,49,72,0,0,0,0,0,0,248,127,180,81,36,4,51,166,
-248,152,122,101,167,211,150,157,217,201,2,0,3,12,233,190,166,157,185,105,
-244,229,167,118,114,64,128,1,4,228,129,0,3,137,116,223,51,126,60,59,50,196,
-195,211,45,62,156,180,238,206,72,16,0,72,151,77,243,55,227,195,179,45,77,
-59,114,211,233,203,78,236,228,129,0,5,10,73,2,0,12,21,18,4,0,28,82,35,32,
-80,74,8,62,124,189,42,105,219,148,148,16,188,249,122,70,235,179,101,156,
-184,121,15,132,0,34,29,159,47,74,181,33,198,235,179,101,156,184,121,15,132,
-0,38,17,159,47,73,187,247,116,208,62,16,0,168,94,124,189,42,212,135,55,126,
-238,154,7,194,0,23,7,207,151,164,76,61,50,143,132,0,50,21,159,47,74,181,33,
-196,195,211,40,248,64,3,96,217,242,244,137,135,200,248,64,3,161,57,242,244,
-171,82,28,76,62,71,194,0,31,8,207,151,164,141,253,121,115,31,8,0,132,47,62,
-94,149,106,67,145,191,175,46,99,225,0,17,133,103,203,210,110,157,221,122,
-101,230,62,16,1,40,110,124,189,42,212,135,55,78,238,189,50,243,31,8,0,156,
-43,62,94,148,242,227,223,187,39,49,240,128,10,67,115,229,233,86,164,58,121,
-113,239,221,147,152,248,64,5,97,249,242,244,155,167,102,205,60,242,227,223,
-187,39,49,240,128,11,68,179,229,233,86,164,57,186,118,108,211,207,46,61,
-251,178,115,31,8,0,188,71,62,94,149,52,237,203,235,126,236,179,243,102,231,
-151,161,0,32,252,242,244,169,167,110,82,34,67,249,229,233,55,78,205,154,
-121,229,199,191,118,78,100,37,0,24,137,115,203,210,173,72,115,116,236,217,
-167,158,92,123,247,100,230,66,80,1,152,87,60,189,41,229,199,191,118,78,100,
-43,224,3,80,222,121,122,85,169,14,158,92,123,247,100,230,66,190,0,55,10,
-231,151,164,221,59,186,244,203,204,133,252,0,114,27,207,47,74,181,33,205,
-211,187,175,76,188,200,95,192,7,97,28,242,244,145,191,175,46,100,51,224,3,
-208,190,121,122,85,169,14,70,254,188,185,144,207,128,15,193,249,229,233,19,
-15,76,164,37,0,32,133,115,203,210,173,72,113,48,244,202,66,80,2,24,71,60,
-189,38,239,221,211,65,10,248,1,20,47,158,94,149,106,67,155,191,119,77,4,43,
-224,4,112,190,121,122,70,235,179,101,156,184,121,16,191,128,18,67,185,229,
-233,86,164,56,221,118,108,179,151,15,34,23,240,2,88,62,124,189,44,229,195,
-200,124,32,4,208,126,121,122,89,203,135,145,9,64,9,194,145,254,0,0,255,144,
-24,100,130,14,0,16,176,2,192,129,11,33,12,1,168,193,108,96,186,48,95,32,0,
-0,0,0,0,0,0,0,56,38,95,25,113,189,18,9,211,47,62,143,100,20,95,0,20,159,
-240,0,7,252,144,162,241,2,195,66,7,11,89,204,140,197,252,229,197,226,230,
-115,3,16,69,19,64,5,43,252,0,9,255,40,16,188,33,49,123,97,217,23,151,45,
-252,131,66,7,0,20,191,240,0,39,252,176,66,240,133,82,195,187,62,88,188,185,
-111,228,26,16,56,0,166,127,128,1,63,230,2,23,132,58,150,92,217,121,101,221,
-143,44,94,92,183,242,13,8,28,0,83,127,192,0,159,243,65,11,194,23,79,206,
-238,152,124,69,229,203,127,32,208,129,192,5,59,252,0,9,255,56,16,188,33,53,
-60,240,203,23,151,45,252,131,66,7,0,20,255,240,0,39,252,240,66,240,132,85,
-165,38,47,46,91,249,6,132,14,0,31,255,228,64,98,192,105,87,20,139,10,191,5,
-64,130,76,156,197,132,1,101,91,91,187,22,176,36,8,28,201,204,160,119,156,
-253,127,33,23,115,31,193,102,79,142,202,44,15,232,34,182,84,113,95,115,248,
-52,201,241,216,176,139,0,59,148,152,85,239,47,108,254,5,66,76,1,130,212,69,
-79,178,16,148,8,61,58,52,170,49,190,202,6,105,219,251,52,245,7,49,252,22,
-157,26,85,25,64,205,59,127,102,158,160,246,63,74,7,135,23,53,2,65,48,227,
-223,205,64,160,0,48,76,60,244,238,80,40,0,20,19,15,76,59,148,10,0,7,5,195,
-211,14,230,74,72,130,99,203,167,98,129,64,1,32,120,247,243,80,40,0,44,15,
-47,142,10,5,0,6,130,230,217,191,127,37,2,128,3,192,246,111,206,160,80,0,
-136,30,220,62,19,151,160,123,116,238,79,94,129,240,223,221,73,32,0,48,110,
-88,119,100,223,181,68,16,94,91,250,238,200,160,80,0,152,31,61,59,148,10,0,
-21,4,231,199,151,69,2,128,5,192,250,97,220,160,80,0,192,127,255,128,20,23,
-134,30,92,242,164,34,19,207,167,45,59,179,233,205,229,37,129,127,255,0,0,
-191,255,128,0,63,255,197,131,246,203,203,158,157,251,160,0,0,0,0,0,65,98,
-32,3,166,156,30,53,32,249,165,131,76,223,159,62,94,70,172,114,16,176,144,
-60,56,250,19,18,5,159,25,89,32,121,180,238,42,30,129,229,221,140,164,122,7,
-147,46,50,129,232,62,61,251,120,97,199,208,156,129,83,127,0,50,250,69,3,
-252,131,32,248,250,242,229,151,119,72,240,3,254,148,0,2,168,254,0,0,255,
-167,0,33,68,88,32,0,33,64,176,2,170,254,0,0,255,169,0,33,69,220,32,0,33,67,
-184,2,172,254,0,0,255,171,8,137,144,0,0,0,0,0,0,0,128,68,73,4,195,187,126,
-226,8,4,178,16,41,164,32,147,7,136,52,193,240,0,18,17,48,124,0,8,133,76,31,
-0,3,33,147,7,192,1,8,116,193,240,0,82,127,255,132,47,65,11,137,191,174,45,
-153,98,242,229,191,144,105,4,95,47,46,91,249,32,211,185,6,94,92,183,242,65,
-163,14,236,155,52,238,206,0,85,255,192,6,13,167,157,109,57,123,136,144,31,
-245,192,3,5,231,179,78,60,163,9,0,2,10,199,248,0,3,254,192,4,32,249,242,
-244,147,187,163,129,116,128,24,66,51,229,233,87,78,238,142,5,210,0,65,8,
-207,151,164,157,221,24,182,23,72,1,140,39,62,94,149,116,238,232,197,176,
-186,64,8,97,25,242,244,147,187,163,54,66,233,0,50,132,231,203,210,174,157,
-221,25,178,23,72,1,20,43,62,94,145,182,111,195,209,155,33,116,128,17,194,
-179,229,233,27,102,252,61,27,52,23,72,1,36,31,158,94,146,119,116,112,50,
-208,3,8,71,60,189,42,233,221,209,192,203,64,8,33,28,242,244,147,187,163,22,
-195,45,0,49,132,243,203,210,174,157,221,24,182,25,104,1,12,35,158,94,146,
-119,116,102,200,101,160,6,80,158,121,122,85,211,187,163,54,67,45,0,34,133,
-115,203,210,54,205,248,122,51,100,50,208,2,56,87,60,189,35,108,223,135,163,
-102,131,45,0,36,7,255,248,1,11,50,136,132,115,235,139,15,46,88,124,140,36,
-0,4,43,79,224,139,16,0,0,0,0,0,0,60,15,192,101,253,152,0,5,109,252,17,98,0,
-0,0,0,0,0,7,129,248,12,191,181,0,0,174,63,130,44,64,0,0,0,0,0,0,240,63,1,
-151,246,224,0,21,215,240,69,136,0,0,0,0,0,0,0,8,0,50,254,228,0,2,188,254,8,
-177,0,0,0,0,0,0,0,1,0,6,95,221,128,0,87,223,193,22,32,0,0,0,0,0,0,8,32,0,
-203,251,208,0,11,3,248,34,196,0,0,0,0,0,0,1,4,0,25,127,126,0,1,97,127,4,88,
-128,0,0,0,0,0,0,32,128,3,47,240,64,0,44,79,224,139,16,0,0,0,0,0,0,8,16,0,
-101,254,24,0,5,141,252,1,96,216,247,238,199,135,162,162,33,90,121,197,221,
-143,126,77,59,179,172,146,17,167,156,46,185,179,101,228,176,65,89,77,16,
-124,123,246,240,195,203,40,162,64,0,193,255,138,5,144,158,89,112,228,171,
-39,119,71,2,232,132,114,203,135,36,157,221,28,11,164,0,66,25,203,46,28,149,
-100,238,232,197,180,200,162,233,0,1,134,114,203,135,37,89,59,186,49,109,10,
-40,186,64,2,97,124,178,225,201,39,119,70,45,166,69,23,72,0,140,47,150,92,
-57,36,238,232,197,180,40,162,233,0,25,134,114,203,135,37,89,59,186,51,101,
-50,40,186,64,0,161,156,178,225,201,86,78,238,140,217,66,138,46,144,0,168,
-95,44,184,114,73,221,209,155,41,145,69,210,0,37,11,229,151,14,73,59,186,51,
-101,10,40,186,64,6,161,124,178,225,201,27,102,252,61,38,69,23,72,0,28,47,
-150,92,57,35,108,223,135,164,40,162,233,0,11,134,114,203,135,36,77,253,113,
-108,203,50,40,186,64,1,33,156,178,225,201,19,127,92,91,50,194,138,46,144,0,
-200,87,44,184,114,85,147,187,164,200,162,237,0,5,133,114,203,135,37,89,59,
-186,66,138,46,208,0,216,79,44,184,114,73,221,210,100,81,118,128,10,194,121,
-101,195,146,78,238,144,162,139,180,0,118,21,223,150,158,153,106,201,221,
-209,192,203,33,61,249,105,233,150,78,238,142,6,90,0,33,13,239,203,79,76,
-181,100,238,232,197,180,200,163,45,0,1,134,247,229,167,166,90,178,119,116,
-98,218,20,81,150,128,4,195,59,242,211,211,44,157,221,24,182,153,20,101,160,
-2,48,206,252,180,244,203,39,119,70,45,161,69,25,104,0,204,55,191,45,61,50,
-213,147,187,163,54,83,34,140,180,0,10,27,223,150,158,153,106,201,221,209,
-155,40,81,70,90,0,21,12,239,203,79,76,178,119,116,102,202,100,81,150,128,9,
-67,59,242,211,211,44,157,221,25,178,133,20,101,160,3,80,206,252,180,244,
-203,27,102,252,61,38,69,25,104,0,28,51,191,45,61,50,198,217,191,15,72,81,
-70,90,0,23,13,239,203,79,76,177,55,245,197,179,44,200,163,45,0,4,134,247,
-229,167,166,88,155,250,226,217,150,20,81,150,128,6,66,251,242,211,211,45,
-89,59,186,76,138,51,16,0,88,95,126,90,122,101,171,39,119,72,81,70,98,0,27,
-10,239,203,79,76,178,119,116,153,20,102,32,2,176,174,252,180,244,203,39,
-119,72,81,70,98,0,58,40,173,176,82,90,4,19,54,157,155,21,217,6,203,199,174,
-29,156,197,9,7,199,191,111,12,60,178,138,20,0,6,9,143,127,15,42,208,130,
-243,217,167,30,81,132,65,123,242,211,211,42,228,0,
-};
-#elif defined(DUK_USE_DOUBLE_BE)
-DUK_INTERNAL const duk_uint8_t duk_builtins_data[3833] = {
-105,195,75,32,3,148,52,154,248,9,26,13,128,112,105,0,240,22,20,26,95,124,6,
-152,52,137,0,120,99,74,239,129,18,70,241,191,2,98,13,79,32,42,88,210,90,2,
-240,1,50,141,37,168,76,94,216,118,69,229,203,127,44,0,84,163,73,106,21,75,
-14,236,249,98,242,229,191,150,0,46,81,164,181,14,165,151,54,94,89,119,99,
-203,23,151,45,252,176,1,146,141,37,168,93,63,59,186,97,241,23,151,45,252,
-176,1,178,141,37,168,77,79,60,50,197,229,203,127,44,0,116,163,73,106,17,86,
-148,152,188,185,111,229,128,15,148,129,198,137,36,58,166,142,91,251,212,
-243,195,44,94,92,183,242,13,79,8,45,14,91,252,121,148,52,199,120,63,72,105,
-21,240,118,128,210,237,224,245,17,165,43,224,211,55,231,207,151,148,161,70,
-145,0,31,40,107,26,2,18,138,26,228,192,142,0,16,161,174,76,9,74,26,228,192,
-158,0,8,161,174,76,10,96,2,42,26,228,192,174,0,26,161,174,76,11,96,3,74,26,
-228,192,190,0,44,161,174,76,12,96,3,202,26,228,192,206,0,70,161,169,84,14,
-202,3,255,254,32,234,3,255,192,0,0,0,0,0,0,119,1,255,192,0,0,0,0,0,0,57,
-136,1,152,32,16,194,0,166,24,6,49,0,57,138,2,12,96,18,99,128,163,32,5,153,
-40,76,94,216,118,69,229,203,127,35,41,10,165,135,118,124,177,121,114,223,
-200,203,67,169,101,205,151,150,93,216,242,197,229,203,127,35,49,11,167,231,
-119,76,62,34,242,229,191,145,154,132,212,243,195,44,94,92,183,242,51,144,
-138,180,164,197,229,203,127,35,60,6,26,0,52,208,193,226,117,215,211,15,12,
-166,146,11,67,150,255,30,77,24,58,113,64,243,92,8,27,0,68,217,130,70,212,
-19,54,224,161,185,5,77,216,44,111,65,115,126,12,28,16,100,225,156,16,32,18,
-17,195,15,46,121,100,238,232,136,136,87,12,60,185,229,141,179,126,30,136,
-100,130,233,231,59,12,228,34,66,52,243,141,167,118,158,153,80,73,9,201,151,
-30,252,153,106,210,146,118,72,150,76,184,247,228,203,86,148,152,123,246,
-240,223,187,46,238,135,132,132,229,221,143,126,76,181,105,73,61,36,75,46,
-236,123,242,101,171,74,76,61,251,120,111,221,151,119,67,226,65,178,243,199,
-135,134,83,242,66,58,238,203,207,30,30,25,81,201,5,225,203,78,238,136,163,
-208,92,59,50,242,232,138,62,0,2,38,163,19,255,255,224,142,80,192,0,20,31,
-240,14,135,103,203,210,135,45,253,55,244,243,195,44,252,205,197,0,1,18,221,
-82,0,3,24,207,151,164,254,251,168,114,223,195,47,46,158,98,101,231,143,150,
-158,29,55,242,104,68,79,62,94,147,251,238,161,203,127,12,188,186,121,157,
-135,110,94,109,100,131,99,229,151,15,76,172,168,8,89,217,16,201,151,54,157,
-217,104,114,223,195,47,46,154,114,243,102,68,19,158,92,59,27,73,6,205,203,
-46,95,89,91,74,0,3,17,225,203,47,108,187,186,69,241,211,46,238,122,119,238,
-230,216,72,70,158,116,242,225,217,151,35,81,33,26,121,198,229,191,214,93,
-205,69,0,1,134,105,231,23,199,76,187,185,233,197,179,43,73,32,154,242,249,
-230,214,80,0,31,255,193,2,38,103,110,117,24,81,115,0,78,228,0,161,208,16,
-237,24,121,207,239,186,135,45,252,50,242,233,229,188,144,221,60,232,114,
-223,211,127,79,60,50,207,204,224,72,167,14,91,248,101,229,211,204,158,113,
-119,117,219,151,150,28,91,50,184,144,40,95,224,0,15,248,64,4,20,78,129,5,
-195,195,134,207,38,232,130,99,195,179,97,201,244,19,22,157,217,14,15,130,
-135,254,0,48,125,60,224,242,229,135,200,9,1,255,12,2,162,136,112,2,112,80,
-128,0,193,177,239,221,143,15,64,35,224,152,20,144,62,27,248,3,2,9,195,175,
-61,0,231,208,126,89,123,101,229,207,40,72,32,188,244,105,205,208,40,16,94,
-123,52,227,202,22,136,39,61,252,186,6,18,13,207,134,205,56,242,134,175,65,
-250,238,231,163,78,110,129,231,208,125,59,178,101,241,63,48,25,248,0,12,47,
-102,30,125,36,238,201,151,196,252,192,103,255,255,240,92,189,178,242,242,8,
-105,4,231,191,110,80,67,80,0,24,62,109,252,162,225,199,160,16,212,0,10,7,
-183,15,0,67,80,0,56,54,109,59,58,101,228,8,106,0,9,6,229,151,39,92,121,66,
-15,192,0,97,124,178,228,235,143,45,45,57,244,116,8,63,255,255,10,39,248,0,
-195,51,114,223,182,30,140,60,161,239,201,149,248,248,31,241,0,140,80,129,
-202,10,49,128,10,35,1,6,199,163,15,40,61,32,9,10,199,163,15,40,123,242,101,
-131,210,4,144,108,123,247,99,195,210,8,250,15,167,118,76,190,39,230,131,52,
-133,236,195,207,164,157,217,50,248,159,154,12,212,0,6,27,179,126,60,59,50,
-195,223,183,134,30,89,97,9,5,219,135,166,61,16,164,131,242,203,195,102,28,
-121,97,145,6,231,151,15,44,122,33,201,5,231,179,78,60,177,8,130,243,225,
-179,79,72,148,66,121,245,197,207,167,45,59,179,197,162,23,211,124,205,253,
-242,242,135,135,158,87,240,68,122,111,153,191,30,29,153,102,111,239,151,
-148,60,60,242,191,130,23,211,125,94,28,50,242,135,135,158,87,240,128,0,196,
-122,111,153,191,30,29,153,106,240,225,151,148,60,60,242,191,132,0,6,9,211,
-150,157,177,160,131,115,235,139,159,78,81,72,10,47,248,0,3,254,40,17,138,
-48,66,136,152,64,0,66,129,48,5,27,252,88,76,216,54,47,214,131,50,172,88,15,
-253,255,255,255,255,255,255,240,153,178,103,95,173,6,101,88,176,0,0,0,0,0,
-0,0,0,67,168,15,255,0,0,0,0,0,0,17,26,19,233,201,169,38,180,91,242,103,70,
-147,58,77,75,48,31,252,0,0,0,0,0,0,34,51,162,199,131,82,77,104,183,228,206,
-141,38,116,154,150,96,127,248,0,0,0,0,0,0,0,15,248,192,70,40,0,0,0,0,0,0,0,
-0,3,10,44,68,9,216,8,20,49,130,15,211,124,109,62,50,228,95,36,55,166,248,
-190,56,111,221,151,119,77,56,118,47,18,23,211,125,14,89,113,233,231,167,
-126,230,18,5,31,252,0,224,188,48,242,231,148,116,144,58,181,33,143,127,64,
-247,111,238,56,0,127,199,2,49,72,127,248,0,0,0,0,0,0,180,81,36,4,51,166,
-248,152,122,101,167,211,150,157,217,201,2,0,3,12,233,190,166,157,185,105,
-244,229,167,118,114,64,128,1,4,228,129,0,3,137,116,223,51,126,60,59,50,196,
-195,211,45,62,156,180,238,206,72,16,0,72,151,77,243,55,227,195,179,45,77,
-59,114,211,233,203,78,236,228,129,0,5,10,73,2,0,12,21,18,4,0,28,82,35,32,
-80,74,8,62,124,189,42,105,219,148,148,16,188,249,122,70,235,179,101,156,
-184,121,15,132,0,34,29,159,47,74,181,33,198,235,179,101,156,184,121,15,132,
-0,38,17,159,47,73,187,247,116,208,62,16,0,168,94,124,189,42,212,135,55,126,
-238,154,7,194,0,23,7,207,151,164,76,61,50,143,132,0,50,21,159,47,74,181,33,
-196,195,211,40,248,64,3,96,217,242,244,137,135,200,248,64,3,161,57,242,244,
-171,82,28,76,62,71,194,0,31,8,207,151,164,141,253,121,115,31,8,0,132,47,62,
-94,149,106,67,145,191,175,46,99,225,0,17,133,103,203,210,110,157,221,122,
-101,230,62,16,1,40,110,124,189,42,212,135,55,78,238,189,50,243,31,8,0,156,
-43,62,94,148,242,227,223,187,39,49,240,128,10,67,115,229,233,86,164,58,121,
-113,239,221,147,152,248,64,5,97,249,242,244,155,167,102,205,60,242,227,223,
-187,39,49,240,128,11,68,179,229,233,86,164,57,186,118,108,211,207,46,61,
-251,178,115,31,8,0,188,71,62,94,149,52,237,203,235,126,236,179,243,102,231,
-151,161,0,32,252,242,244,169,167,110,82,34,67,249,229,233,55,78,205,154,
-121,229,199,191,118,78,100,37,0,24,137,115,203,210,173,72,115,116,236,217,
-167,158,92,123,247,100,230,66,80,1,152,87,60,189,41,229,199,191,118,78,100,
-43,224,3,80,222,121,122,85,169,14,158,92,123,247,100,230,66,190,0,55,10,
-231,151,164,221,59,186,244,203,204,133,252,0,114,27,207,47,74,181,33,205,
-211,187,175,76,188,200,95,192,7,97,28,242,244,145,191,175,46,100,51,224,3,
-208,190,121,122,85,169,14,70,254,188,185,144,207,128,15,193,249,229,233,19,
-15,76,164,37,0,32,133,115,203,210,173,72,113,48,244,202,66,80,2,24,71,60,
-189,38,239,221,211,65,10,248,1,20,47,158,94,149,106,67,155,191,119,77,4,43,
-224,4,112,190,121,122,70,235,179,101,156,184,121,16,191,128,18,67,185,229,
-233,86,164,56,221,118,108,179,151,15,34,23,240,2,88,62,124,189,44,229,195,
-200,124,32,4,208,126,121,122,89,203,135,145,9,64,9,194,145,254,0,0,255,144,
-24,100,130,14,0,16,176,2,192,129,11,33,12,1,168,193,108,96,186,48,95,32,0,
-0,0,0,0,0,0,0,56,38,95,25,113,189,18,9,211,47,62,143,100,20,95,0,20,159,
-240,0,7,252,144,162,241,2,195,66,7,11,89,204,140,197,252,229,197,226,230,
-115,3,16,69,19,64,5,43,252,0,9,255,40,16,188,33,49,123,97,217,23,151,45,
-252,131,66,7,0,20,191,240,0,39,252,176,66,240,133,82,195,187,62,88,188,185,
-111,228,26,16,56,0,166,127,128,1,63,230,2,23,132,58,150,92,217,121,101,221,
-143,44,94,92,183,242,13,8,28,0,83,127,192,0,159,243,65,11,194,23,79,206,
-238,152,124,69,229,203,127,32,208,129,192,5,59,252,0,9,255,56,16,188,33,53,
-60,240,203,23,151,45,252,131,66,7,0,20,255,240,0,39,252,240,66,240,132,85,
-165,38,47,46,91,249,6,132,14,0,31,255,228,64,98,192,64,5,191,10,139,20,87,
-105,130,76,156,197,132,4,0,38,187,27,187,85,81,104,28,201,204,160,31,243,
-23,33,127,125,28,247,193,102,79,142,202,44,3,255,113,84,118,82,184,47,232,
-52,201,241,216,176,139,0,255,111,45,236,84,155,148,58,5,66,76,4,0,146,31,
-181,68,66,209,136,61,58,52,170,49,190,202,1,255,53,4,243,51,249,222,108,22,
-157,26,85,25,64,63,246,160,158,102,127,59,205,74,7,135,23,53,2,65,48,227,
-223,205,64,160,0,48,76,60,244,238,80,40,0,20,19,15,76,59,148,10,0,7,5,195,
-211,14,230,74,72,130,99,203,167,98,129,64,1,32,120,247,243,80,40,0,44,15,
-47,142,10,5,0,6,130,230,217,191,127,37,2,128,3,192,246,111,206,160,80,0,
-136,30,220,62,19,151,160,123,116,238,79,94,129,240,223,221,73,32,0,48,110,
-88,119,100,223,181,68,16,94,91,250,238,200,160,80,0,152,31,61,59,148,10,0,
-21,4,231,199,151,69,2,128,5,192,250,97,220,160,80,0,192,127,255,128,20,23,
-134,30,92,242,164,34,19,207,167,45,59,179,233,205,229,37,129,127,255,0,0,
-191,255,128,0,63,255,197,131,246,203,203,158,157,251,160,32,98,65,0,0,0,0,
-0,3,166,156,30,53,32,249,165,131,76,223,159,62,94,70,172,114,16,176,144,60,
-56,250,19,18,5,159,25,89,32,121,180,238,42,30,129,229,221,140,164,122,7,
-147,46,50,129,232,62,61,251,120,97,199,208,156,129,83,127,0,50,250,69,3,
-252,131,32,248,250,242,229,151,119,72,240,3,254,148,0,2,168,254,0,0,255,
-167,0,33,68,88,32,0,33,64,176,2,170,254,0,0,255,169,0,33,69,220,32,0,33,67,
-184,2,172,254,0,0,255,171,8,137,144,128,0,0,0,0,0,0,0,68,73,4,195,187,126,
-226,8,4,178,16,41,164,32,147,7,136,52,193,240,0,18,17,48,124,0,8,133,76,31,
-0,3,33,147,7,192,1,8,116,193,240,0,82,127,255,132,47,65,11,137,191,174,45,
-153,98,242,229,191,144,105,4,95,47,46,91,249,32,211,185,6,94,92,183,242,65,
-163,14,236,155,52,238,206,0,85,255,192,6,13,167,157,109,57,123,136,144,31,
-245,192,3,5,231,179,78,60,163,9,0,2,10,199,248,0,3,254,192,4,32,249,242,
-244,147,187,163,129,116,128,24,66,51,229,233,87,78,238,142,5,210,0,65,8,
-207,151,164,157,221,24,182,23,72,1,140,39,62,94,149,116,238,232,197,176,
-186,64,8,97,25,242,244,147,187,163,54,66,233,0,50,132,231,203,210,174,157,
-221,25,178,23,72,1,20,43,62,94,145,182,111,195,209,155,33,116,128,17,194,
-179,229,233,27,102,252,61,27,52,23,72,1,36,31,158,94,146,119,116,112,50,
-208,3,8,71,60,189,42,233,221,209,192,203,64,8,33,28,242,244,147,187,163,22,
-195,45,0,49,132,243,203,210,174,157,221,24,182,25,104,1,12,35,158,94,146,
-119,116,102,200,101,160,6,80,158,121,122,85,211,187,163,54,67,45,0,34,133,
-115,203,210,54,205,248,122,51,100,50,208,2,56,87,60,189,35,108,223,135,163,
-102,131,45,0,36,7,255,248,1,11,50,136,132,115,235,139,15,46,88,124,140,36,
-0,4,43,79,224,139,16,15,252,0,0,0,0,0,0,0,101,253,152,0,5,109,252,17,98,1,
-255,128,0,0,0,0,0,0,12,191,181,0,0,174,63,130,44,64,63,240,0,0,0,0,0,0,1,
-151,246,224,0,21,215,240,69,136,8,0,0,0,0,0,0,0,0,50,254,228,0,2,188,254,8,
-177,1,0,0,0,0,0,0,0,0,6,95,221,128,0,87,223,193,22,32,32,8,0,0,0,0,0,0,0,
-203,251,208,0,11,3,248,34,196,4,1,0,0,0,0,0,0,0,25,127,126,0,1,97,127,4,88,
-128,128,32,0,0,0,0,0,0,3,47,240,64,0,44,79,224,139,16,16,8,0,0,0,0,0,0,0,
-101,254,24,0,5,141,252,1,96,216,247,238,199,135,162,162,33,90,121,197,221,
-143,126,77,59,179,172,146,17,167,156,46,185,179,101,228,176,65,89,77,16,
-124,123,246,240,195,203,40,162,64,0,193,255,138,5,144,158,89,112,228,171,
-39,119,71,2,232,132,114,203,135,36,157,221,28,11,164,0,66,25,203,46,28,149,
-100,238,232,197,180,200,162,233,0,1,134,114,203,135,37,89,59,186,49,109,10,
-40,186,64,2,97,124,178,225,201,39,119,70,45,166,69,23,72,0,140,47,150,92,
-57,36,238,232,197,180,40,162,233,0,25,134,114,203,135,37,89,59,186,51,101,
-50,40,186,64,0,161,156,178,225,201,86,78,238,140,217,66,138,46,144,0,168,
-95,44,184,114,73,221,209,155,41,145,69,210,0,37,11,229,151,14,73,59,186,51,
-101,10,40,186,64,6,161,124,178,225,201,27,102,252,61,38,69,23,72,0,28,47,
-150,92,57,35,108,223,135,164,40,162,233,0,11,134,114,203,135,36,77,253,113,
-108,203,50,40,186,64,1,33,156,178,225,201,19,127,92,91,50,194,138,46,144,0,
-200,87,44,184,114,85,147,187,164,200,162,237,0,5,133,114,203,135,37,89,59,
-186,66,138,46,208,0,216,79,44,184,114,73,221,210,100,81,118,128,10,194,121,
-101,195,146,78,238,144,162,139,180,0,118,21,223,150,158,153,106,201,221,
-209,192,203,33,61,249,105,233,150,78,238,142,6,90,0,33,13,239,203,79,76,
-181,100,238,232,197,180,200,163,45,0,1,134,247,229,167,166,90,178,119,116,
-98,218,20,81,150,128,4,195,59,242,211,211,44,157,221,24,182,153,20,101,160,
-2,48,206,252,180,244,203,39,119,70,45,161,69,25,104,0,204,55,191,45,61,50,
-213,147,187,163,54,83,34,140,180,0,10,27,223,150,158,153,106,201,221,209,
-155,40,81,70,90,0,21,12,239,203,79,76,178,119,116,102,202,100,81,150,128,9,
-67,59,242,211,211,44,157,221,25,178,133,20,101,160,3,80,206,252,180,244,
-203,27,102,252,61,38,69,25,104,0,28,51,191,45,61,50,198,217,191,15,72,81,
-70,90,0,23,13,239,203,79,76,177,55,245,197,179,44,200,163,45,0,4,134,247,
-229,167,166,88,155,250,226,217,150,20,81,150,128,6,66,251,242,211,211,45,
-89,59,186,76,138,51,16,0,88,95,126,90,122,101,171,39,119,72,81,70,98,0,27,
-10,239,203,79,76,178,119,116,153,20,102,32,2,176,174,252,180,244,203,39,
-119,72,81,70,98,0,58,40,173,176,82,90,4,19,54,157,155,21,217,6,203,199,174,
-29,156,197,9,7,199,191,111,12,60,178,138,20,0,6,9,143,127,15,42,208,130,
-243,217,167,30,81,132,65,123,242,211,211,42,228,0,
-};
-#elif defined(DUK_USE_DOUBLE_ME)
-DUK_INTERNAL const duk_uint8_t duk_builtins_data[3833] = {
-105,195,75,32,3,148,52,154,248,9,26,13,128,112,105,0,240,22,20,26,95,124,6,
-152,52,137,0,120,99,74,239,129,18,70,241,191,2,98,13,79,32,42,88,210,90,2,
-240,1,50,141,37,168,76,94,216,118,69,229,203,127,44,0,84,163,73,106,21,75,
-14,236,249,98,242,229,191,150,0,46,81,164,181,14,165,151,54,94,89,119,99,
-203,23,151,45,252,176,1,146,141,37,168,93,63,59,186,97,241,23,151,45,252,
-176,1,178,141,37,168,77,79,60,50,197,229,203,127,44,0,116,163,73,106,17,86,
-148,152,188,185,111,229,128,15,148,129,198,137,36,58,166,142,91,251,212,
-243,195,44,94,92,183,242,13,79,8,45,14,91,252,121,148,52,199,120,63,72,105,
-21,240,118,128,210,237,224,245,17,165,43,224,211,55,231,207,151,148,161,70,
-145,0,31,40,107,26,2,18,138,26,228,192,142,0,16,161,174,76,9,74,26,228,192,
-158,0,8,161,174,76,10,96,2,42,26,228,192,174,0,26,161,174,76,11,96,3,74,26,
-228,192,190,0,44,161,174,76,12,96,3,202,26,228,192,206,0,70,161,169,84,14,
-202,3,255,254,32,234,0,0,7,195,248,0,0,0,0,119,0,0,3,193,252,0,0,0,0,57,
-136,1,152,32,16,194,0,166,24,6,49,0,57,138,2,12,96,18,99,128,163,32,5,153,
-40,76,94,216,118,69,229,203,127,35,41,10,165,135,118,124,177,121,114,223,
-200,203,67,169,101,205,151,150,93,216,242,197,229,203,127,35,49,11,167,231,
-119,76,62,34,242,229,191,145,154,132,212,243,195,44,94,92,183,242,51,144,
-138,180,164,197,229,203,127,35,60,6,26,0,52,208,193,226,117,215,211,15,12,
-166,146,11,67,150,255,30,77,24,58,113,64,243,92,8,27,0,68,217,130,70,212,
-19,54,224,161,185,5,77,216,44,111,65,115,126,12,28,16,100,225,156,16,32,18,
-17,195,15,46,121,100,238,232,136,136,87,12,60,185,229,141,179,126,30,136,
-100,130,233,231,59,12,228,34,66,52,243,141,167,118,158,153,80,73,9,201,151,
-30,252,153,106,210,146,118,72,150,76,184,247,228,203,86,148,152,123,246,
-240,223,187,46,238,135,132,132,229,221,143,126,76,181,105,73,61,36,75,46,
-236,123,242,101,171,74,76,61,251,120,111,221,151,119,67,226,65,178,243,199,
-135,134,83,242,66,58,238,203,207,30,30,25,81,201,5,225,203,78,238,136,163,
-208,92,59,50,242,232,138,62,0,2,38,163,19,255,255,224,142,80,192,0,20,31,
-240,14,135,103,203,210,135,45,253,55,244,243,195,44,252,205,197,0,1,18,221,
-82,0,3,24,207,151,164,254,251,168,114,223,195,47,46,158,98,101,231,143,150,
-158,29,55,242,104,68,79,62,94,147,251,238,161,203,127,12,188,186,121,157,
-135,110,94,109,100,131,99,229,151,15,76,172,168,8,89,217,16,201,151,54,157,
-217,104,114,223,195,47,46,154,114,243,102,68,19,158,92,59,27,73,6,205,203,
-46,95,89,91,74,0,3,17,225,203,47,108,187,186,69,241,211,46,238,122,119,238,
-230,216,72,70,158,116,242,225,217,151,35,81,33,26,121,198,229,191,214,93,
-205,69,0,1,134,105,231,23,199,76,187,185,233,197,179,43,73,32,154,242,249,
-230,214,80,0,31,255,193,2,38,103,110,117,24,81,115,0,78,228,0,161,208,16,
-237,24,121,207,239,186,135,45,252,50,242,233,229,188,144,221,60,232,114,
-223,211,127,79,60,50,207,204,224,72,167,14,91,248,101,229,211,204,158,113,
-119,117,219,151,150,28,91,50,184,144,40,95,224,0,15,248,64,4,20,78,129,5,
-195,195,134,207,38,232,130,99,195,179,97,201,244,19,22,157,217,14,15,130,
-135,254,0,48,125,60,224,242,229,135,200,9,1,255,12,2,162,136,112,2,112,80,
-128,0,193,177,239,221,143,15,64,35,224,152,20,144,62,27,248,3,2,9,195,175,
-61,0,231,208,126,89,123,101,229,207,40,72,32,188,244,105,205,208,40,16,94,
-123,52,227,202,22,136,39,61,252,186,6,18,13,207,134,205,56,242,134,175,65,
-250,238,231,163,78,110,129,231,208,125,59,178,101,241,63,48,25,248,0,12,47,
-102,30,125,36,238,201,151,196,252,192,103,255,255,240,92,189,178,242,242,8,
-105,4,231,191,110,80,67,80,0,24,62,109,252,162,225,199,160,16,212,0,10,7,
-183,15,0,67,80,0,56,54,109,59,58,101,228,8,106,0,9,6,229,151,39,92,121,66,
-15,192,0,97,124,178,228,235,143,45,45,57,244,116,8,63,255,255,10,39,248,0,
-195,51,114,223,182,30,140,60,161,239,201,149,248,248,31,241,0,140,80,129,
-202,10,49,128,10,35,1,6,199,163,15,40,61,32,9,10,199,163,15,40,123,242,101,
-131,210,4,144,108,123,247,99,195,210,8,250,15,167,118,76,190,39,230,131,52,
-133,236,195,207,164,157,217,50,248,159,154,12,212,0,6,27,179,126,60,59,50,
-195,223,183,134,30,89,97,9,5,219,135,166,61,16,164,131,242,203,195,102,28,
-121,97,145,6,231,151,15,44,122,33,201,5,231,179,78,60,177,8,130,243,225,
-179,79,72,148,66,121,245,197,207,167,45,59,179,197,162,23,211,124,205,253,
-242,242,135,135,158,87,240,68,122,111,153,191,30,29,153,102,111,239,151,
-148,60,60,242,191,130,23,211,125,94,28,50,242,135,135,158,87,240,128,0,196,
-122,111,153,191,30,29,153,106,240,225,151,148,60,60,242,191,132,0,6,9,211,
-150,157,177,160,131,115,235,139,159,78,81,72,10,47,248,0,3,254,40,17,138,
-48,66,136,152,64,0,66,129,48,5,27,252,88,76,216,54,47,214,131,50,172,88,31,
-255,253,239,255,255,255,255,240,153,178,103,95,173,6,101,88,176,0,0,0,0,0,
-64,0,0,3,168,0,0,31,15,224,0,0,0,17,26,19,233,201,169,38,180,91,242,103,70,
-147,58,77,75,48,0,0,60,31,192,0,0,0,34,51,162,199,131,82,77,104,183,228,
-206,141,38,116,154,150,96,0,0,120,127,128,0,0,0,0,15,248,192,70,40,0,0,0,0,
-0,0,0,0,3,10,44,68,9,216,8,20,49,130,15,211,124,109,62,50,228,95,36,55,166,
-248,190,56,111,221,151,119,77,56,118,47,18,23,211,125,14,89,113,233,231,
-167,126,230,18,5,31,252,0,224,188,48,242,231,148,116,144,58,181,33,143,127,
-64,247,111,238,56,0,127,199,2,49,72,0,0,248,127,0,0,0,0,180,81,36,4,51,166,
-248,152,122,101,167,211,150,157,217,201,2,0,3,12,233,190,166,157,185,105,
-244,229,167,118,114,64,128,1,4,228,129,0,3,137,116,223,51,126,60,59,50,196,
-195,211,45,62,156,180,238,206,72,16,0,72,151,77,243,55,227,195,179,45,77,
-59,114,211,233,203,78,236,228,129,0,5,10,73,2,0,12,21,18,4,0,28,82,35,32,
-80,74,8,62,124,189,42,105,219,148,148,16,188,249,122,70,235,179,101,156,
-184,121,15,132,0,34,29,159,47,74,181,33,198,235,179,101,156,184,121,15,132,
-0,38,17,159,47,73,187,247,116,208,62,16,0,168,94,124,189,42,212,135,55,126,
-238,154,7,194,0,23,7,207,151,164,76,61,50,143,132,0,50,21,159,47,74,181,33,
-196,195,211,40,248,64,3,96,217,242,244,137,135,200,248,64,3,161,57,242,244,
-171,82,28,76,62,71,194,0,31,8,207,151,164,141,253,121,115,31,8,0,132,47,62,
-94,149,106,67,145,191,175,46,99,225,0,17,133,103,203,210,110,157,221,122,
-101,230,62,16,1,40,110,124,189,42,212,135,55,78,238,189,50,243,31,8,0,156,
-43,62,94,148,242,227,223,187,39,49,240,128,10,67,115,229,233,86,164,58,121,
-113,239,221,147,152,248,64,5,97,249,242,244,155,167,102,205,60,242,227,223,
-187,39,49,240,128,11,68,179,229,233,86,164,57,186,118,108,211,207,46,61,
-251,178,115,31,8,0,188,71,62,94,149,52,237,203,235,126,236,179,243,102,231,
-151,161,0,32,252,242,244,169,167,110,82,34,67,249,229,233,55,78,205,154,
-121,229,199,191,118,78,100,37,0,24,137,115,203,210,173,72,115,116,236,217,
-167,158,92,123,247,100,230,66,80,1,152,87,60,189,41,229,199,191,118,78,100,
-43,224,3,80,222,121,122,85,169,14,158,92,123,247,100,230,66,190,0,55,10,
-231,151,164,221,59,186,244,203,204,133,252,0,114,27,207,47,74,181,33,205,
-211,187,175,76,188,200,95,192,7,97,28,242,244,145,191,175,46,100,51,224,3,
-208,190,121,122,85,169,14,70,254,188,185,144,207,128,15,193,249,229,233,19,
-15,76,164,37,0,32,133,115,203,210,173,72,113,48,244,202,66,80,2,24,71,60,
-189,38,239,221,211,65,10,248,1,20,47,158,94,149,106,67,155,191,119,77,4,43,
-224,4,112,190,121,122,70,235,179,101,156,184,121,16,191,128,18,67,185,229,
-233,86,164,56,221,118,108,179,151,15,34,23,240,2,88,62,124,189,44,229,195,
-200,124,32,4,208,126,121,122,89,203,135,145,9,64,9,194,145,254,0,0,255,144,
-24,100,130,14,0,16,176,2,192,129,11,33,12,1,168,193,108,96,186,48,95,32,0,
-0,0,0,0,0,0,0,56,38,95,25,113,189,18,9,211,47,62,143,100,20,95,0,20,159,
-240,0,7,252,144,162,241,2,195,66,7,11,89,204,140,197,252,229,197,226,230,
-115,3,16,69,19,64,5,43,252,0,9,255,40,16,188,33,49,123,97,217,23,151,45,
-252,131,66,7,0,20,191,240,0,39,252,176,66,240,133,82,195,187,62,88,188,185,
-111,228,26,16,56,0,166,127,128,1,63,230,2,23,132,58,150,92,217,121,101,221,
-143,44,94,92,183,242,13,8,28,0,83,127,192,0,159,243,65,11,194,23,79,206,
-238,152,124,69,229,203,127,32,208,129,192,5,59,252,0,9,255,56,16,188,33,53,
-60,240,203,23,151,45,252,131,66,7,0,20,255,240,0,39,252,240,66,240,132,85,
-165,38,47,46,91,249,6,132,14,0,31,255,228,64,98,192,10,191,5,64,105,87,20,
-139,130,76,156,197,132,11,22,176,36,1,101,91,91,184,28,201,204,160,33,23,
-115,31,247,156,253,127,65,102,79,142,202,44,4,113,95,115,255,232,34,182,88,
-52,201,241,216,176,139,1,239,47,108,252,59,148,152,86,5,66,76,15,178,16,
-148,1,130,212,69,72,61,58,52,170,49,190,202,4,245,7,49,254,105,219,251,52,
-22,157,26,85,25,64,158,160,246,63,205,59,127,102,74,7,135,23,53,2,65,48,
-227,223,205,64,160,0,48,76,60,244,238,80,40,0,20,19,15,76,59,148,10,0,7,5,
-195,211,14,230,74,72,130,99,203,167,98,129,64,1,32,120,247,243,80,40,0,44,
-15,47,142,10,5,0,6,130,230,217,191,127,37,2,128,3,192,246,111,206,160,80,0,
-136,30,220,62,19,151,160,123,116,238,79,94,129,240,223,221,73,32,0,48,110,
-88,119,100,223,181,68,16,94,91,250,238,200,160,80,0,152,31,61,59,148,10,0,
-21,4,231,199,151,69,2,128,5,192,250,97,220,160,80,0,192,127,255,128,20,23,
-134,30,92,242,164,34,19,207,167,45,59,179,233,205,229,37,129,127,255,0,0,
-191,255,128,0,63,255,197,131,246,203,203,158,157,251,160,0,65,98,32,0,0,0,
-0,3,166,156,30,53,32,249,165,131,76,223,159,62,94,70,172,114,16,176,144,60,
-56,250,19,18,5,159,25,89,32,121,180,238,42,30,129,229,221,140,164,122,7,
-147,46,50,129,232,62,61,251,120,97,199,208,156,129,83,127,0,50,250,69,3,
-252,131,32,248,250,242,229,151,119,72,240,3,254,148,0,2,168,254,0,0,255,
-167,0,33,68,88,32,0,33,64,176,2,170,254,0,0,255,169,0,33,69,220,32,0,33,67,
-184,2,172,254,0,0,255,171,8,137,144,0,0,0,128,0,0,0,0,68,73,4,195,187,126,
-226,8,4,178,16,41,164,32,147,7,136,52,193,240,0,18,17,48,124,0,8,133,76,31,
-0,3,33,147,7,192,1,8,116,193,240,0,82,127,255,132,47,65,11,137,191,174,45,
-153,98,242,229,191,144,105,4,95,47,46,91,249,32,211,185,6,94,92,183,242,65,
-163,14,236,155,52,238,206,0,85,255,192,6,13,167,157,109,57,123,136,144,31,
-245,192,3,5,231,179,78,60,163,9,0,2,10,199,248,0,3,254,192,4,32,249,242,
-244,147,187,163,129,116,128,24,66,51,229,233,87,78,238,142,5,210,0,65,8,
-207,151,164,157,221,24,182,23,72,1,140,39,62,94,149,116,238,232,197,176,
-186,64,8,97,25,242,244,147,187,163,54,66,233,0,50,132,231,203,210,174,157,
-221,25,178,23,72,1,20,43,62,94,145,182,111,195,209,155,33,116,128,17,194,
-179,229,233,27,102,252,61,27,52,23,72,1,36,31,158,94,146,119,116,112,50,
-208,3,8,71,60,189,42,233,221,209,192,203,64,8,33,28,242,244,147,187,163,22,
-195,45,0,49,132,243,203,210,174,157,221,24,182,25,104,1,12,35,158,94,146,
-119,116,102,200,101,160,6,80,158,121,122,85,211,187,163,54,67,45,0,34,133,
-115,203,210,54,205,248,122,51,100,50,208,2,56,87,60,189,35,108,223,135,163,
-102,131,45,0,36,7,255,248,1,11,50,136,132,115,235,139,15,46,88,124,140,36,
-0,4,43,79,224,139,16,0,0,60,15,192,0,0,0,0,101,253,152,0,5,109,252,17,98,0,
-0,7,129,248,0,0,0,0,12,191,181,0,0,174,63,130,44,64,0,0,240,63,0,0,0,0,1,
-151,246,224,0,21,215,240,69,136,0,0,0,8,0,0,0,0,0,50,254,228,0,2,188,254,8,
-177,0,0,0,1,0,0,0,0,0,6,95,221,128,0,87,223,193,22,32,0,0,8,32,0,0,0,0,0,
-203,251,208,0,11,3,248,34,196,0,0,1,4,0,0,0,0,0,25,127,126,0,1,97,127,4,88,
-128,0,0,32,128,0,0,0,0,3,47,240,64,0,44,79,224,139,16,0,0,8,16,0,0,0,0,0,
-101,254,24,0,5,141,252,1,96,216,247,238,199,135,162,162,33,90,121,197,221,
-143,126,77,59,179,172,146,17,167,156,46,185,179,101,228,176,65,89,77,16,
-124,123,246,240,195,203,40,162,64,0,193,255,138,5,144,158,89,112,228,171,
-39,119,71,2,232,132,114,203,135,36,157,221,28,11,164,0,66,25,203,46,28,149,
-100,238,232,197,180,200,162,233,0,1,134,114,203,135,37,89,59,186,49,109,10,
-40,186,64,2,97,124,178,225,201,39,119,70,45,166,69,23,72,0,140,47,150,92,
-57,36,238,232,197,180,40,162,233,0,25,134,114,203,135,37,89,59,186,51,101,
-50,40,186,64,0,161,156,178,225,201,86,78,238,140,217,66,138,46,144,0,168,
-95,44,184,114,73,221,209,155,41,145,69,210,0,37,11,229,151,14,73,59,186,51,
-101,10,40,186,64,6,161,124,178,225,201,27,102,252,61,38,69,23,72,0,28,47,
-150,92,57,35,108,223,135,164,40,162,233,0,11,134,114,203,135,36,77,253,113,
-108,203,50,40,186,64,1,33,156,178,225,201,19,127,92,91,50,194,138,46,144,0,
-200,87,44,184,114,85,147,187,164,200,162,237,0,5,133,114,203,135,37,89,59,
-186,66,138,46,208,0,216,79,44,184,114,73,221,210,100,81,118,128,10,194,121,
-101,195,146,78,238,144,162,139,180,0,118,21,223,150,158,153,106,201,221,
-209,192,203,33,61,249,105,233,150,78,238,142,6,90,0,33,13,239,203,79,76,
-181,100,238,232,197,180,200,163,45,0,1,134,247,229,167,166,90,178,119,116,
-98,218,20,81,150,128,4,195,59,242,211,211,44,157,221,24,182,153,20,101,160,
-2,48,206,252,180,244,203,39,119,70,45,161,69,25,104,0,204,55,191,45,61,50,
-213,147,187,163,54,83,34,140,180,0,10,27,223,150,158,153,106,201,221,209,
-155,40,81,70,90,0,21,12,239,203,79,76,178,119,116,102,202,100,81,150,128,9,
-67,59,242,211,211,44,157,221,25,178,133,20,101,160,3,80,206,252,180,244,
-203,27,102,252,61,38,69,25,104,0,28,51,191,45,61,50,198,217,191,15,72,81,
-70,90,0,23,13,239,203,79,76,177,55,245,197,179,44,200,163,45,0,4,134,247,
-229,167,166,88,155,250,226,217,150,20,81,150,128,6,66,251,242,211,211,45,
-89,59,186,76,138,51,16,0,88,95,126,90,122,101,171,39,119,72,81,70,98,0,27,
-10,239,203,79,76,178,119,116,153,20,102,32,2,176,174,252,180,244,203,39,
-119,72,81,70,98,0,58,40,173,176,82,90,4,19,54,157,155,21,217,6,203,199,174,
-29,156,197,9,7,199,191,111,12,60,178,138,20,0,6,9,143,127,15,42,208,130,
-243,217,167,30,81,132,65,123,242,211,211,42,228,0,
-};
-#else
-#error invalid endianness defines
-#endif
-#endif /* DUK_USE_ROM_OBJECTS */
-#line 1 "duk_error_macros.c"
-/*
- * Error, fatal, and panic handling.
- */
-
-/* include removed: duk_internal.h */
-
-#define DUK__ERRFMT_BUFSIZE 256 /* size for formatting buffers */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-
-DUK_INTERNAL void duk_err_handle_error_fmt(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *fmt, ...) {
- va_list ap;
- char msg[DUK__ERRFMT_BUFSIZE];
- va_start(ap, fmt);
- (void) DUK_VSNPRINTF(msg, sizeof(msg), fmt, ap);
- msg[sizeof(msg) - 1] = (char) 0;
- duk_err_create_and_throw(thr, (duk_errcode_t) (line_and_code >> 24), msg, filename, (duk_int_t) (line_and_code & 0x00ffffffL));
- va_end(ap); /* dead code, but ensures portability (see Linux man page notes) */
-}
-
-DUK_INTERNAL void duk_err_handle_error(duk_hthread *thr, const char *filename, duk_uint_t line_and_code, const char *msg) {
- duk_err_create_and_throw(thr, (duk_errcode_t) (line_and_code >> 24), msg, filename, (duk_int_t) (line_and_code & 0x00ffffffL));
-}
-
-#else /* DUK_USE_VERBOSE_ERRORS */
-
-DUK_INTERNAL void duk_err_handle_error(duk_hthread *thr, duk_errcode_t code) {
- duk_err_create_and_throw(thr, code);
-}
-
-#endif /* DUK_USE_VERBOSE_ERRORS */
-
-/*
- * Error throwing helpers
- */
-
-#if defined(DUK_USE_VERBOSE_ERRORS)
-#if defined(DUK_USE_PARANOID_ERRORS)
-DUK_INTERNAL void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index, const char *expect_name) {
- DUK_ERROR_RAW_FMT3(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, "%s required, found %s (stack index %ld)",
- expect_name, duk_get_type_name((duk_context *) thr, index), (long) index);
-}
-#else
-DUK_INTERNAL void duk_err_require_type_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index, const char *expect_name) {
- DUK_ERROR_RAW_FMT3(thr, filename, linenumber, DUK_ERR_TYPE_ERROR, "%s required, found %s (stack index %ld)",
- expect_name, duk_push_string_readable((duk_context *) thr, index), (long) index);
-}
-#endif
-DUK_INTERNAL void duk_err_range(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_RANGE_ERROR, message);
-}
-DUK_INTERNAL void duk_err_api_index(duk_hthread *thr, const char *filename, duk_int_t linenumber, duk_idx_t index) {
- DUK_ERROR_RAW_FMT1(thr, filename, linenumber, DUK_ERR_API_ERROR, "invalid stack index %ld", (long) (index));
-}
-DUK_INTERNAL void duk_err_api(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_API_ERROR, message);
-}
-DUK_INTERNAL void duk_err_unimplemented_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_UNIMPLEMENTED_ERROR, DUK_STR_UNIMPLEMENTED);
-}
-#ifndef DUK_USE_BYTECODE_DUMP_SUPPORT
-DUK_INTERNAL void duk_err_unsupported_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_UNSUPPORTED_ERROR, DUK_STR_UNSUPPORTED);
-}
-#endif
-DUK_INTERNAL void duk_err_internal_defmsg(duk_hthread *thr, const char *filename, duk_int_t linenumber) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_INTERNAL_ERROR, DUK_STR_INTERNAL_ERROR);
-}
-DUK_INTERNAL void duk_err_internal(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_INTERNAL_ERROR, message);
-}
-DUK_INTERNAL void duk_err_alloc(duk_hthread *thr, const char *filename, duk_int_t linenumber, const char *message) {
- DUK_ERROR_RAW(thr, filename, linenumber, DUK_ERR_ALLOC_ERROR, message);
-}
-#else
-/* The file/line arguments are NULL and 0, they're ignored by DUK_ERROR_RAW()
- * when non-verbose errors are used.
- */
-DUK_INTERNAL void duk_err_type(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_TYPE_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_api(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_API_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_range(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_RANGE_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_syntax(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_SYNTAX_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_unimplemented(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_UNIMPLEMENTED_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_unsupported(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_UNSUPPORTED_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_internal(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, 0, DUK_ERR_INTERNAL_ERROR, NULL);
-}
-DUK_INTERNAL void duk_err_alloc(duk_hthread *thr) {
- DUK_ERROR_RAW(thr, NULL, thr, DUK_ERR_ALLOC_ERROR, NULL);
-}
-#endif
-
-/*
- * Default fatal error handler
- */
-
-DUK_INTERNAL void duk_default_fatal_handler(duk_context *ctx, duk_errcode_t code, const char *msg) {
- DUK_UNREF(ctx);
-#if defined(DUK_USE_FILE_IO)
- DUK_FPRINTF(DUK_STDERR, "FATAL %ld: %s\n", (long) code, (const char *) (msg ? msg : "null"));
- DUK_FFLUSH(DUK_STDERR);
-#else
- /* omit print */
-#endif
- DUK_D(DUK_DPRINT("default fatal handler called, code %ld -> calling DUK_PANIC()", (long) code));
- DUK_PANIC(code, msg);
- DUK_UNREACHABLE();
-}
-
-/*
- * Default panic handler
- */
-
-#if !defined(DUK_USE_PANIC_HANDLER)
-DUK_INTERNAL void duk_default_panic_handler(duk_errcode_t code, const char *msg) {
-#if defined(DUK_USE_FILE_IO)
- DUK_FPRINTF(DUK_STDERR, "PANIC %ld: %s ("
-#if defined(DUK_USE_PANIC_ABORT)
- "calling abort"
-#elif defined(DUK_USE_PANIC_EXIT)
- "calling exit"
-#elif defined(DUK_USE_PANIC_SEGFAULT)
- "segfaulting on purpose"
-#else
-#error no DUK_USE_PANIC_xxx macro defined
-#endif
- ")\n", (long) code, (const char *) (msg ? msg : "null"));
- DUK_FFLUSH(DUK_STDERR);
-#else
- /* omit print */
- DUK_UNREF(code);
- DUK_UNREF(msg);
-#endif
-
-#if defined(DUK_USE_PANIC_ABORT)
- DUK_ABORT();
-#elif defined(DUK_USE_PANIC_EXIT)
- DUK_EXIT(-1);
-#elif defined(DUK_USE_PANIC_SEGFAULT)
- /* exit() afterwards to satisfy "noreturn" */
- DUK_CAUSE_SEGFAULT(); /* SCANBUILD: "Dereference of null pointer", normal */
- DUK_EXIT(-1);
-#else
-#error no DUK_USE_PANIC_xxx macro defined
-#endif
-
- DUK_UNREACHABLE();
-}
-#endif /* !DUK_USE_PANIC_HANDLER */
-
-#undef DUK__ERRFMT_BUFSIZE
-#line 1 "duk_unicode_support.c"
-/*
- * Various Unicode help functions for character classification predicates,
- * case conversion, decoding, etc.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Fast path tables
- */
-
-#if defined(DUK_USE_IDCHAR_FASTPATH)
-DUK_INTERNAL const duk_int8_t duk_is_idchar_tab[128] = {
- /* 0: not IdentifierStart or IdentifierPart
- * 1: IdentifierStart and IdentifierPart
- * -1: IdentifierPart only
- */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00...0x0f */
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10...0x1f */
- 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x20...0x2f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 0, 0, 0, 0, 0, /* 0x30...0x3f */
- 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40...0x4f */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 0x50...0x5f */
- 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60...0x6f */
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0 /* 0x70...0x7f */
-};
-#endif
-
-/*
- * XUTF-8 and CESU-8 encoding/decoding
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_get_xutf8_length(duk_ucodepoint_t cp) {
- duk_uint_fast32_t x = (duk_uint_fast32_t) cp;
- if (x < 0x80UL) {
- /* 7 bits */
- return 1;
- } else if (x < 0x800UL) {
- /* 11 bits */
- return 2;
- } else if (x < 0x10000UL) {
- /* 16 bits */
- return 3;
- } else if (x < 0x200000UL) {
- /* 21 bits */
- return 4;
- } else if (x < 0x4000000UL) {
- /* 26 bits */
- return 5;
- } else if (x < (duk_ucodepoint_t) 0x80000000UL) {
- /* 31 bits */
- return 6;
- } else {
- /* 36 bits */
- return 7;
- }
-}
-
-#if defined(DUK_USE_ASSERTIONS)
-DUK_INTERNAL duk_small_int_t duk_unicode_get_cesu8_length(duk_ucodepoint_t cp) {
- duk_uint_fast32_t x = (duk_uint_fast32_t) cp;
- if (x < 0x80UL) {
- /* 7 bits */
- return 1;
- } else if (x < 0x800UL) {
- /* 11 bits */
- return 2;
- } else if (x < 0x10000UL) {
- /* 16 bits */
- return 3;
- } else {
- /* Encoded as surrogate pair, each encoding to 3 bytes for
- * 6 bytes total. Codepoints above U+10FFFF encode as 6 bytes
- * too, see duk_unicode_encode_cesu8().
- */
- return 3 + 3;
- }
-}
-#endif /* DUK_USE_ASSERTIONS */
-
-DUK_INTERNAL const duk_uint8_t duk_unicode_xutf8_markers[7] = {
- 0x00, 0xc0, 0xe0, 0xf0, 0xf8, 0xfc, 0xfe
-};
-
-/* Encode to extended UTF-8; 'out' must have space for at least
- * DUK_UNICODE_MAX_XUTF8_LENGTH bytes. Allows encoding of any
- * 32-bit (unsigned) codepoint.
- */
-DUK_INTERNAL duk_small_int_t duk_unicode_encode_xutf8(duk_ucodepoint_t cp, duk_uint8_t *out) {
- duk_uint_fast32_t x = (duk_uint_fast32_t) cp;
- duk_small_int_t len;
- duk_uint8_t marker;
- duk_small_int_t i;
-
- len = duk_unicode_get_xutf8_length(cp);
- DUK_ASSERT(len > 0);
-
- marker = duk_unicode_xutf8_markers[len - 1]; /* 64-bit OK because always >= 0 */
-
- i = len;
- DUK_ASSERT(i > 0);
- do {
- i--;
- if (i > 0) {
- out[i] = (duk_uint8_t) (0x80 + (x & 0x3f));
- x >>= 6;
- } else {
- /* Note: masking of 'x' is not necessary because of
- * range check and shifting -> no bits overlapping
- * the marker should be set.
- */
- out[0] = (duk_uint8_t) (marker + x);
- }
- } while (i > 0);
-
- return len;
-}
-
-/* Encode to CESU-8; 'out' must have space for at least
- * DUK_UNICODE_MAX_CESU8_LENGTH bytes; codepoints above U+10FFFF
- * will encode to garbage but won't overwrite the output buffer.
- */
-DUK_INTERNAL duk_small_int_t duk_unicode_encode_cesu8(duk_ucodepoint_t cp, duk_uint8_t *out) {
- duk_uint_fast32_t x = (duk_uint_fast32_t) cp;
- duk_small_int_t len;
-
- if (x < 0x80UL) {
- out[0] = (duk_uint8_t) x;
- len = 1;
- } else if (x < 0x800UL) {
- out[0] = (duk_uint8_t) (0xc0 + ((x >> 6) & 0x1f));
- out[1] = (duk_uint8_t) (0x80 + (x & 0x3f));
- len = 2;
- } else if (x < 0x10000UL) {
- /* surrogate pairs get encoded here */
- out[0] = (duk_uint8_t) (0xe0 + ((x >> 12) & 0x0f));
- out[1] = (duk_uint8_t) (0x80 + ((x >> 6) & 0x3f));
- out[2] = (duk_uint8_t) (0x80 + (x & 0x3f));
- len = 3;
- } else {
- /*
- * Unicode codepoints above U+FFFF are encoded as surrogate
- * pairs here. This ensures that all CESU-8 codepoints are
- * 16-bit values as expected in Ecmascript. The surrogate
- * pairs always get a 3-byte encoding (each) in CESU-8.
- * See: http://en.wikipedia.org/wiki/Surrogate_pair
- *
- * 20-bit codepoint, 10 bits (A and B) per surrogate pair:
- *
- * x = 0b00000000 0000AAAA AAAAAABB BBBBBBBB
- * sp1 = 0b110110AA AAAAAAAA (0xd800 + ((x >> 10) & 0x3ff))
- * sp2 = 0b110111BB BBBBBBBB (0xdc00 + (x & 0x3ff))
- *
- * Encoded into CESU-8:
- *
- * sp1 -> 0b11101101 (0xe0 + ((sp1 >> 12) & 0x0f))
- * -> 0b1010AAAA (0x80 + ((sp1 >> 6) & 0x3f))
- * -> 0b10AAAAAA (0x80 + (sp1 & 0x3f))
- * sp2 -> 0b11101101 (0xe0 + ((sp2 >> 12) & 0x0f))
- * -> 0b1011BBBB (0x80 + ((sp2 >> 6) & 0x3f))
- * -> 0b10BBBBBB (0x80 + (sp2 & 0x3f))
- *
- * Note that 0x10000 must be subtracted first. The code below
- * avoids the sp1, sp2 temporaries which saves around 20 bytes
- * of code.
- */
-
- x -= 0x10000UL;
-
- out[0] = (duk_uint8_t) (0xed);
- out[1] = (duk_uint8_t) (0xa0 + ((x >> 16) & 0x0f));
- out[2] = (duk_uint8_t) (0x80 + ((x >> 10) & 0x3f));
- out[3] = (duk_uint8_t) (0xed);
- out[4] = (duk_uint8_t) (0xb0 + ((x >> 6) & 0x0f));
- out[5] = (duk_uint8_t) (0x80 + (x & 0x3f));
- len = 6;
- }
-
- return len;
-}
-
-/* Decode helper. Return zero on error. */
-DUK_INTERNAL duk_small_int_t duk_unicode_decode_xutf8(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end, duk_ucodepoint_t *out_cp) {
- const duk_uint8_t *p;
- duk_uint32_t res;
- duk_uint_fast8_t ch;
- duk_small_int_t n;
-
- DUK_UNREF(thr);
-
- p = *ptr;
- if (p < ptr_start || p >= ptr_end) {
- goto fail;
- }
-
- /*
- * UTF-8 decoder which accepts longer than standard byte sequences.
- * This allows full 32-bit code points to be used.
- */
-
- ch = (duk_uint_fast8_t) (*p++);
- if (ch < 0x80) {
- /* 0xxx xxxx [7 bits] */
- res = (duk_uint32_t) (ch & 0x7f);
- n = 0;
- } else if (ch < 0xc0) {
- /* 10xx xxxx -> invalid */
- goto fail;
- } else if (ch < 0xe0) {
- /* 110x xxxx 10xx xxxx [11 bits] */
- res = (duk_uint32_t) (ch & 0x1f);
- n = 1;
- } else if (ch < 0xf0) {
- /* 1110 xxxx 10xx xxxx 10xx xxxx [16 bits] */
- res = (duk_uint32_t) (ch & 0x0f);
- n = 2;
- } else if (ch < 0xf8) {
- /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx [21 bits] */
- res = (duk_uint32_t) (ch & 0x07);
- n = 3;
- } else if (ch < 0xfc) {
- /* 1111 10xx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [26 bits] */
- res = (duk_uint32_t) (ch & 0x03);
- n = 4;
- } else if (ch < 0xfe) {
- /* 1111 110x 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [31 bits] */
- res = (duk_uint32_t) (ch & 0x01);
- n = 5;
- } else if (ch < 0xff) {
- /* 1111 1110 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [36 bits] */
- res = (duk_uint32_t) (0);
- n = 6;
- } else {
- /* 8-byte format could be:
- * 1111 1111 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx 10xx xxxx [41 bits]
- *
- * However, this format would not have a zero bit following the
- * leading one bits and would not allow 0xFF to be used as an
- * "invalid xutf-8" marker for internal keys. Further, 8-byte
- * encodings (up to 41 bit code points) are not currently needed.
- */
- goto fail;
- }
-
- DUK_ASSERT(p >= ptr_start); /* verified at beginning */
- if (p + n > ptr_end) {
- /* check pointer at end */
- goto fail;
- }
-
- while (n > 0) {
- DUK_ASSERT(p >= ptr_start && p < ptr_end);
- res = res << 6;
- res += (duk_uint32_t) ((*p++) & 0x3f);
- n--;
- }
-
- *ptr = p;
- *out_cp = res;
- return 1;
-
- fail:
- return 0;
-}
-
-/* used by e.g. duk_regexp_executor.c, string built-ins */
-DUK_INTERNAL duk_ucodepoint_t duk_unicode_decode_xutf8_checked(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end) {
- duk_ucodepoint_t cp;
-
- if (duk_unicode_decode_xutf8(thr, ptr, ptr_start, ptr_end, &cp)) {
- return cp;
- }
- DUK_ERROR_INTERNAL(thr, "utf-8 decode failed"); /* XXX: 'internal error' is a bit of a misnomer */
- DUK_UNREACHABLE();
- return 0;
-}
-
-/* Compute (extended) utf-8 length without codepoint encoding validation,
- * used for string interning.
- *
- * NOTE: This algorithm is performance critical, more so than string hashing
- * in some cases. It is needed when interning a string and needs to scan
- * every byte of the string with no skipping. Having an ASCII fast path
- * is useful if possible in the algorithm. The current algorithms were
- * chosen from several variants, based on x64 gcc -O2 testing. See:
- * https://github.com/svaarala/duktape/pull/422
- *
- * NOTE: must match src/dukutil.py:duk_unicode_unvalidated_utf8_length().
- */
-
-#if defined(DUK_USE_PREFER_SIZE)
-/* Small variant; roughly 150 bytes smaller than the fast variant. */
-DUK_INTERNAL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen) {
- const duk_uint8_t *p;
- const duk_uint8_t *p_end;
- duk_size_t ncont;
- duk_size_t clen;
-
- p = data;
- p_end = data + blen;
- ncont = 0;
- while (p != p_end) {
- duk_uint8_t x;
- x = *p++;
- if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) {
- ncont++;
- }
- }
-
- DUK_ASSERT(ncont <= blen);
- clen = blen - ncont;
- DUK_ASSERT(clen <= blen);
- return clen;
-}
-#else /* DUK_USE_PREFER_SIZE */
-/* This seems like a good overall approach. Fast path for ASCII in 4 byte
- * blocks.
- */
-DUK_INTERNAL duk_size_t duk_unicode_unvalidated_utf8_length(const duk_uint8_t *data, duk_size_t blen) {
- const duk_uint8_t *p;
- const duk_uint8_t *p_end;
- const duk_uint32_t *p32_end;
- const duk_uint32_t *p32;
- duk_size_t ncont;
- duk_size_t clen;
-
- ncont = 0; /* number of continuation (non-initial) bytes in [0x80,0xbf] */
- p = data;
- p_end = data + blen;
- if (blen < 16) {
- goto skip_fastpath;
- }
-
- /* Align 'p' to 4; the input data may have arbitrary alignment.
- * End of string check not needed because blen >= 16.
- */
- while (((duk_size_t) (const void *) p) & 0x03U) {
- duk_uint8_t x;
- x = *p++;
- if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) {
- ncont++;
- }
- }
-
- /* Full, aligned 4-byte reads. */
- p32_end = (const duk_uint32_t *) (const void *) (p + ((duk_size_t) (p_end - p) & (duk_size_t) (~0x03)));
- p32 = (const duk_uint32_t *) (const void *) p;
- while (p32 != (const duk_uint32_t *) p32_end) {
- duk_uint32_t x;
- x = *p32++;
- if (DUK_LIKELY((x & 0x80808080UL) == 0)) {
- ; /* ASCII fast path */
- } else {
- /* Flip highest bit of each byte which changes
- * the bit pattern 10xxxxxx into 00xxxxxx which
- * allows an easy bit mask test.
- */
- x ^= 0x80808080UL;
- if (DUK_UNLIKELY(!(x & 0xc0000000UL))) {
- ncont++;
- }
- if (DUK_UNLIKELY(!(x & 0x00c00000UL))) {
- ncont++;
- }
- if (DUK_UNLIKELY(!(x & 0x0000c000UL))) {
- ncont++;
- }
- if (DUK_UNLIKELY(!(x & 0x000000c0UL))) {
- ncont++;
- }
- }
- }
- p = (const duk_uint8_t *) p32;
- /* Fall through to handle the rest. */
-
- skip_fastpath:
- while (p != p_end) {
- duk_uint8_t x;
- x = *p++;
- if (DUK_UNLIKELY(x >= 0x80 && x <= 0xbf)) {
- ncont++;
- }
- }
-
- DUK_ASSERT(ncont <= blen);
- clen = blen - ncont;
- DUK_ASSERT(clen <= blen);
- return clen;
-}
-#endif /* DUK_USE_PREFER_SIZE */
-
-/*
- * Unicode range matcher
- *
- * Matches a codepoint against a packed bitstream of character ranges.
- * Used for slow path Unicode matching.
- */
-
-/* Must match src/extract_chars.py, generate_match_table3(). */
-DUK_LOCAL duk_uint32_t duk__uni_decode_value(duk_bitdecoder_ctx *bd_ctx) {
- duk_uint32_t t;
-
- t = (duk_uint32_t) duk_bd_decode(bd_ctx, 4);
- if (t <= 0x0eU) {
- return t;
- }
- t = (duk_uint32_t) duk_bd_decode(bd_ctx, 8);
- if (t <= 0xfdU) {
- return t + 0x0f;
- }
- if (t == 0xfeU) {
- t = (duk_uint32_t) duk_bd_decode(bd_ctx, 12);
- return t + 0x0fU + 0xfeU;
- } else {
- t = (duk_uint32_t) duk_bd_decode(bd_ctx, 24);
- return t + 0x0fU + 0xfeU + 0x1000UL;
- }
-}
-
-DUK_LOCAL duk_small_int_t duk__uni_range_match(const duk_uint8_t *unitab, duk_size_t unilen, duk_codepoint_t cp) {
- duk_bitdecoder_ctx bd_ctx;
- duk_codepoint_t prev_re;
-
- DUK_MEMZERO(&bd_ctx, sizeof(bd_ctx));
- bd_ctx.data = (const duk_uint8_t *) unitab;
- bd_ctx.length = (duk_size_t) unilen;
-
- prev_re = 0;
- for (;;) {
- duk_codepoint_t r1, r2;
- r1 = (duk_codepoint_t) duk__uni_decode_value(&bd_ctx);
- if (r1 == 0) {
- break;
- }
- r2 = (duk_codepoint_t) duk__uni_decode_value(&bd_ctx);
-
- r1 = prev_re + r1;
- r2 = r1 + r2;
- prev_re = r2;
-
- /* [r1,r2] is the range */
-
- DUK_DDD(DUK_DDDPRINT("duk__uni_range_match: cp=%06lx range=[0x%06lx,0x%06lx]",
- (unsigned long) cp, (unsigned long) r1, (unsigned long) r2));
- if (cp >= r1 && cp <= r2) {
- return 1;
- }
- }
-
- return 0;
-}
-
-/*
- * "WhiteSpace" production check.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_is_whitespace(duk_codepoint_t cp) {
- /*
- * E5 Section 7.2 specifies six characters specifically as
- * white space:
- *
- * 0009;<control>;Cc;0;S;;;;;N;CHARACTER TABULATION;;;;
- * 000B;<control>;Cc;0;S;;;;;N;LINE TABULATION;;;;
- * 000C;<control>;Cc;0;WS;;;;;N;FORM FEED (FF);;;;
- * 0020;SPACE;Zs;0;WS;;;;;N;;;;;
- * 00A0;NO-BREAK SPACE;Zs;0;CS;<noBreak> 0020;;;;N;NON-BREAKING SPACE;;;;
- * FEFF;ZERO WIDTH NO-BREAK SPACE;Cf;0;BN;;;;;N;BYTE ORDER MARK;;;;
- *
- * It also specifies any Unicode category 'Zs' characters as white
- * space. These can be extracted with the "src/extract_chars.py" script.
- * Current result:
- *
- * RAW OUTPUT:
- * ===========
- * 0020;SPACE;Zs;0;WS;;;;;N;;;;;
- * 00A0;NO-BREAK SPACE;Zs;0;CS;<noBreak> 0020;;;;N;NON-BREAKING SPACE;;;;
- * 1680;OGHAM SPACE MARK;Zs;0;WS;;;;;N;;;;;
- * 180E;MONGOLIAN VOWEL SEPARATOR;Zs;0;WS;;;;;N;;;;;
- * 2000;EN QUAD;Zs;0;WS;2002;;;;N;;;;;
- * 2001;EM QUAD;Zs;0;WS;2003;;;;N;;;;;
- * 2002;EN SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2003;EM SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2004;THREE-PER-EM SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2005;FOUR-PER-EM SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2006;SIX-PER-EM SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2007;FIGURE SPACE;Zs;0;WS;<noBreak> 0020;;;;N;;;;;
- * 2008;PUNCTUATION SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 2009;THIN SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 200A;HAIR SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 202F;NARROW NO-BREAK SPACE;Zs;0;CS;<noBreak> 0020;;;;N;;;;;
- * 205F;MEDIUM MATHEMATICAL SPACE;Zs;0;WS;<compat> 0020;;;;N;;;;;
- * 3000;IDEOGRAPHIC SPACE;Zs;0;WS;<wide> 0020;;;;N;;;;;
- *
- * RANGES:
- * =======
- * 0x0020
- * 0x00a0
- * 0x1680
- * 0x180e
- * 0x2000 ... 0x200a
- * 0x202f
- * 0x205f
- * 0x3000
- *
- * A manual decoder (below) is probably most compact for this.
- */
-
- duk_uint_fast8_t lo;
- duk_uint_fast32_t hi;
-
- /* cp == -1 (EOF) never matches and causes return value 0 */
-
- lo = (duk_uint_fast8_t) (cp & 0xff);
- hi = (duk_uint_fast32_t) (cp >> 8); /* does not fit into an uchar */
-
- if (hi == 0x0000UL) {
- if (lo == 0x09U || lo == 0x0bU || lo == 0x0cU ||
- lo == 0x20U || lo == 0xa0U) {
- return 1;
- }
- } else if (hi == 0x0020UL) {
- if (lo <= 0x0aU || lo == 0x2fU || lo == 0x5fU) {
- return 1;
- }
- } else if (cp == 0x1680L || cp == 0x180eL || cp == 0x3000L ||
- cp == 0xfeffL) {
- return 1;
- }
-
- return 0;
-}
-
-/*
- * "LineTerminator" production check.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_is_line_terminator(duk_codepoint_t cp) {
- /*
- * E5 Section 7.3
- *
- * A LineTerminatorSequence essentially merges <CR> <LF> sequences
- * into a single line terminator. This must be handled by the caller.
- */
-
- if (cp == 0x000aL || cp == 0x000dL || cp == 0x2028L ||
- cp == 0x2029L) {
- return 1;
- }
-
- return 0;
-}
-
-/*
- * "IdentifierStart" production check.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_is_identifier_start(duk_codepoint_t cp) {
- /*
- * E5 Section 7.6:
- *
- * IdentifierStart:
- * UnicodeLetter
- * $
- * _
- * \ UnicodeEscapeSequence
- *
- * IdentifierStart production has one multi-character production:
- *
- * \ UnicodeEscapeSequence
- *
- * The '\' character is -not- matched by this function. Rather, the caller
- * should decode the escape and then call this function to check whether the
- * decoded character is acceptable (see discussion in E5 Section 7.6).
- *
- * The "UnicodeLetter" alternative of the production allows letters
- * from various Unicode categories. These can be extracted with the
- * "src/extract_chars.py" script.
- *
- * Because the result has hundreds of Unicode codepoint ranges, matching
- * for any values >= 0x80 are done using a very slow range-by-range scan
- * and a packed range format.
- *
- * The ASCII portion (codepoints 0x00 ... 0x7f) is fast-pathed below because
- * it matters the most. The ASCII related ranges of IdentifierStart are:
- *
- * 0x0041 ... 0x005a ['A' ... 'Z']
- * 0x0061 ... 0x007a ['a' ... 'z']
- * 0x0024 ['$']
- * 0x005f ['_']
- */
-
- /* ASCII (and EOF) fast path -- quick accept and reject */
- if (cp <= 0x7fL) {
-#if defined(DUK_USE_IDCHAR_FASTPATH)
- return (cp >= 0) && (duk_is_idchar_tab[cp] > 0);
-#else
- if ((cp >= 'a' && cp <= 'z') ||
- (cp >= 'A' && cp <= 'Z') ||
- cp == '_' || cp == '$') {
- return 1;
- }
- return 0;
-#endif
- }
-
- /* Non-ASCII slow path (range-by-range linear comparison), very slow */
-
-#ifdef DUK_USE_SOURCE_NONBMP
- if (duk__uni_range_match(duk_unicode_ids_noa,
- (duk_size_t) sizeof(duk_unicode_ids_noa),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
-#else
- if (cp < 0x10000L) {
- if (duk__uni_range_match(duk_unicode_ids_noabmp,
- sizeof(duk_unicode_ids_noabmp),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
- } else {
- /* without explicit non-BMP support, assume non-BMP characters
- * are always accepted as identifier characters.
- */
- return 1;
- }
-#endif
-}
-
-/*
- * "IdentifierPart" production check.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_is_identifier_part(duk_codepoint_t cp) {
- /*
- * E5 Section 7.6:
- *
- * IdentifierPart:
- * IdentifierStart
- * UnicodeCombiningMark
- * UnicodeDigit
- * UnicodeConnectorPunctuation
- * <ZWNJ> [U+200C]
- * <ZWJ> [U+200D]
- *
- * IdentifierPart production has one multi-character production
- * as part of its IdentifierStart alternative. The '\' character
- * of an escape sequence is not matched here, see discussion in
- * duk_unicode_is_identifier_start().
- *
- * To match non-ASCII characters (codepoints >= 0x80), a very slow
- * linear range-by-range scan is used. The codepoint is first compared
- * to the IdentifierStart ranges, and if it doesn't match, then to a
- * set consisting of code points in IdentifierPart but not in
- * IdentifierStart. This is done to keep the unicode range data small,
- * at the expense of speed.
- *
- * The ASCII fast path consists of:
- *
- * 0x0030 ... 0x0039 ['0' ... '9', UnicodeDigit]
- * 0x0041 ... 0x005a ['A' ... 'Z', IdentifierStart]
- * 0x0061 ... 0x007a ['a' ... 'z', IdentifierStart]
- * 0x0024 ['$', IdentifierStart]
- * 0x005f ['_', IdentifierStart and
- * UnicodeConnectorPunctuation]
- *
- * UnicodeCombiningMark has no code points <= 0x7f.
- *
- * The matching code reuses the "identifier start" tables, and then
- * consults a separate range set for characters in "identifier part"
- * but not in "identifier start". These can be extracted with the
- * "src/extract_chars.py" script.
- *
- * UnicodeCombiningMark -> categories Mn, Mc
- * UnicodeDigit -> categories Nd
- * UnicodeConnectorPunctuation -> categories Pc
- */
-
- /* ASCII (and EOF) fast path -- quick accept and reject */
- if (cp <= 0x7fL) {
-#if defined(DUK_USE_IDCHAR_FASTPATH)
- return (cp >= 0) && (duk_is_idchar_tab[cp] != 0);
-#else
- if ((cp >= 'a' && cp <= 'z') ||
- (cp >= 'A' && cp <= 'Z') ||
- (cp >= '0' && cp <= '9') ||
- cp == '_' || cp == '$') {
- return 1;
- }
- return 0;
-#endif
- }
-
- /* Non-ASCII slow path (range-by-range linear comparison), very slow */
-
-#ifdef DUK_USE_SOURCE_NONBMP
- if (duk__uni_range_match(duk_unicode_ids_noa,
- sizeof(duk_unicode_ids_noa),
- (duk_codepoint_t) cp) ||
- duk__uni_range_match(duk_unicode_idp_m_ids_noa,
- sizeof(duk_unicode_idp_m_ids_noa),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
-#else
- if (cp < 0x10000L) {
- if (duk__uni_range_match(duk_unicode_ids_noabmp,
- sizeof(duk_unicode_ids_noabmp),
- (duk_codepoint_t) cp) ||
- duk__uni_range_match(duk_unicode_idp_m_ids_noabmp,
- sizeof(duk_unicode_idp_m_ids_noabmp),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
- } else {
- /* without explicit non-BMP support, assume non-BMP characters
- * are always accepted as identifier characters.
- */
- return 1;
- }
-#endif
-}
-
-/*
- * Unicode letter check.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_is_letter(duk_codepoint_t cp) {
- /*
- * Unicode letter is now taken to be the categories:
- *
- * Lu, Ll, Lt, Lm, Lo
- *
- * (Not sure if this is exactly correct.)
- *
- * The ASCII fast path consists of:
- *
- * 0x0041 ... 0x005a ['A' ... 'Z']
- * 0x0061 ... 0x007a ['a' ... 'z']
- */
-
- /* ASCII (and EOF) fast path -- quick accept and reject */
- if (cp <= 0x7fL) {
- if ((cp >= 'a' && cp <= 'z') ||
- (cp >= 'A' && cp <= 'Z')) {
- return 1;
- }
- return 0;
- }
-
- /* Non-ASCII slow path (range-by-range linear comparison), very slow */
-
-#ifdef DUK_USE_SOURCE_NONBMP
- if (duk__uni_range_match(duk_unicode_ids_noa,
- sizeof(duk_unicode_ids_noa),
- (duk_codepoint_t) cp) &&
- !duk__uni_range_match(duk_unicode_ids_m_let_noa,
- sizeof(duk_unicode_ids_m_let_noa),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
-#else
- if (cp < 0x10000L) {
- if (duk__uni_range_match(duk_unicode_ids_noabmp,
- sizeof(duk_unicode_ids_noabmp),
- (duk_codepoint_t) cp) &&
- !duk__uni_range_match(duk_unicode_ids_m_let_noabmp,
- sizeof(duk_unicode_ids_m_let_noabmp),
- (duk_codepoint_t) cp)) {
- return 1;
- }
- return 0;
- } else {
- /* without explicit non-BMP support, assume non-BMP characters
- * are always accepted as letters.
- */
- return 1;
- }
-#endif
-}
-
-/*
- * Complex case conversion helper which decodes a bit-packed conversion
- * control stream generated by unicode/extract_caseconv.py. The conversion
- * is very slow because it runs through the conversion data in a linear
- * fashion to save space (which is why ASCII characters have a special
- * fast path before arriving here).
- *
- * The particular bit counts etc have been determined experimentally to
- * be small but still sufficient, and must match the Python script
- * (src/extract_caseconv.py).
- *
- * The return value is the case converted codepoint or -1 if the conversion
- * results in multiple characters (this is useful for regexp Canonicalization
- * operation). If 'buf' is not NULL, the result codepoint(s) are also
- * appended to the hbuffer.
- *
- * Context and locale specific rules must be checked before consulting
- * this function.
- */
-
-DUK_LOCAL
-duk_codepoint_t duk__slow_case_conversion(duk_hthread *thr,
- duk_bufwriter_ctx *bw,
- duk_codepoint_t cp,
- duk_bitdecoder_ctx *bd_ctx) {
- duk_small_int_t skip = 0;
- duk_small_int_t n;
- duk_small_int_t t;
- duk_small_int_t count;
- duk_codepoint_t tmp_cp;
- duk_codepoint_t start_i;
- duk_codepoint_t start_o;
-
- DUK_UNREF(thr);
- DUK_ASSERT(bd_ctx != NULL);
-
- DUK_DDD(DUK_DDDPRINT("slow case conversion for codepoint: %ld", (long) cp));
-
- /* range conversion with a "skip" */
- DUK_DDD(DUK_DDDPRINT("checking ranges"));
- for (;;) {
- skip++;
- n = (duk_small_int_t) duk_bd_decode(bd_ctx, 6);
- if (n == 0x3f) {
- /* end marker */
- break;
- }
- DUK_DDD(DUK_DDDPRINT("skip=%ld, n=%ld", (long) skip, (long) n));
-
- while (n--) {
- start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- start_o = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- count = (duk_small_int_t) duk_bd_decode(bd_ctx, 7);
- DUK_DDD(DUK_DDDPRINT("range: start_i=%ld, start_o=%ld, count=%ld, skip=%ld",
- (long) start_i, (long) start_o, (long) count, (long) skip));
-
- if (cp >= start_i) {
- tmp_cp = cp - start_i; /* always >= 0 */
- if (tmp_cp < (duk_codepoint_t) count * (duk_codepoint_t) skip &&
- (tmp_cp % (duk_codepoint_t) skip) == 0) {
- DUK_DDD(DUK_DDDPRINT("range matches input codepoint"));
- cp = start_o + tmp_cp;
- goto single;
- }
- }
- }
- }
-
- /* 1:1 conversion */
- n = (duk_small_int_t) duk_bd_decode(bd_ctx, 6);
- DUK_DDD(DUK_DDDPRINT("checking 1:1 conversions (count %ld)", (long) n));
- while (n--) {
- start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- start_o = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- DUK_DDD(DUK_DDDPRINT("1:1 conversion %ld -> %ld", (long) start_i, (long) start_o));
- if (cp == start_i) {
- DUK_DDD(DUK_DDDPRINT("1:1 matches input codepoint"));
- cp = start_o;
- goto single;
- }
- }
-
- /* complex, multicharacter conversion */
- n = (duk_small_int_t) duk_bd_decode(bd_ctx, 7);
- DUK_DDD(DUK_DDDPRINT("checking 1:n conversions (count %ld)", (long) n));
- while (n--) {
- start_i = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- t = (duk_small_int_t) duk_bd_decode(bd_ctx, 2);
- DUK_DDD(DUK_DDDPRINT("1:n conversion %ld -> %ld chars", (long) start_i, (long) t));
- if (cp == start_i) {
- DUK_DDD(DUK_DDDPRINT("1:n matches input codepoint"));
- if (bw != NULL) {
- while (t--) {
- tmp_cp = (duk_codepoint_t) duk_bd_decode(bd_ctx, 16);
- DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) tmp_cp);
- }
- }
- return -1;
- } else {
- while (t--) {
- (void) duk_bd_decode(bd_ctx, 16);
- }
- }
- }
-
- /* default: no change */
- DUK_DDD(DUK_DDDPRINT("no rule matches, output is same as input"));
- /* fall through */
-
- single:
- if (bw != NULL) {
- DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) cp);
- }
- return cp;
-}
-
-/*
- * Case conversion helper, with context/local sensitivity.
- * For proper case conversion, one needs to know the character
- * and the preceding and following characters, as well as
- * locale/language.
- */
-
-/* XXX: add 'language' argument when locale/language sensitive rule
- * support added.
- */
-DUK_LOCAL
-duk_codepoint_t duk__case_transform_helper(duk_hthread *thr,
- duk_bufwriter_ctx *bw,
- duk_codepoint_t cp,
- duk_codepoint_t prev,
- duk_codepoint_t next,
- duk_bool_t uppercase) {
- duk_bitdecoder_ctx bd_ctx;
-
- /* fast path for ASCII */
- if (cp < 0x80L) {
- /* XXX: there are language sensitive rules for the ASCII range.
- * If/when language/locale support is implemented, they need to
- * be implemented here for the fast path. There are no context
- * sensitive rules for ASCII range.
- */
-
- if (uppercase) {
- if (cp >= 'a' && cp <= 'z') {
- cp = cp - 'a' + 'A';
- }
- } else {
- if (cp >= 'A' && cp <= 'Z') {
- cp = cp - 'A' + 'a';
- }
- }
-
- if (bw != NULL) {
- DUK_BW_WRITE_RAW_U8(thr, bw, (duk_uint8_t) cp);
- }
- return cp;
- }
-
- /* context and locale specific rules which cannot currently be represented
- * in the caseconv bitstream: hardcoded rules in C
- */
- if (uppercase) {
- /* XXX: turkish / azeri */
- } else {
- /*
- * Final sigma context specific rule. This is a rather tricky
- * rule and this handling is probably not 100% correct now.
- * The rule is not locale/language specific so it is supported.
- */
-
- if (cp == 0x03a3L && /* U+03A3 = GREEK CAPITAL LETTER SIGMA */
- duk_unicode_is_letter(prev) && /* prev exists and is not a letter */
- !duk_unicode_is_letter(next)) { /* next does not exist or next is not a letter */
- /* Capital sigma occurred at "end of word", lowercase to
- * U+03C2 = GREEK SMALL LETTER FINAL SIGMA. Otherwise
- * fall through and let the normal rules lowercase it to
- * U+03C3 = GREEK SMALL LETTER SIGMA.
- */
- cp = 0x03c2L;
- goto singlechar;
- }
-
- /* XXX: lithuanian not implemented */
- /* XXX: lithuanian, explicit dot rules */
- /* XXX: turkish / azeri, lowercase rules */
- }
-
- /* 1:1 or special conversions, but not locale/context specific: script generated rules */
- DUK_MEMZERO(&bd_ctx, sizeof(bd_ctx));
- if (uppercase) {
- bd_ctx.data = (const duk_uint8_t *) duk_unicode_caseconv_uc;
- bd_ctx.length = (duk_size_t) sizeof(duk_unicode_caseconv_uc);
- } else {
- bd_ctx.data = (const duk_uint8_t *) duk_unicode_caseconv_lc;
- bd_ctx.length = (duk_size_t) sizeof(duk_unicode_caseconv_lc);
- }
- return duk__slow_case_conversion(thr, bw, cp, &bd_ctx);
-
- singlechar:
- if (bw != NULL) {
- DUK_BW_WRITE_RAW_XUTF8(thr, bw, (duk_ucodepoint_t) cp);
- }
- return cp;
-
- /* unused now, not needed until Turkish/Azeri */
-#if 0
- nochar:
- return -1;
-#endif
-}
-
-/*
- * Replace valstack top with case converted version.
- */
-
-DUK_INTERNAL void duk_unicode_case_convert_string(duk_hthread *thr, duk_small_int_t uppercase) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *h_input;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
- const duk_uint8_t *p, *p_start, *p_end;
- duk_codepoint_t prev, curr, next;
-
- h_input = duk_require_hstring(ctx, -1);
- DUK_ASSERT(h_input != NULL);
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input));
-
- /* [ ... input buffer ] */
-
- p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start;
-
- prev = -1; DUK_UNREF(prev);
- curr = -1;
- next = -1;
- for (;;) {
- prev = curr;
- curr = next;
- next = -1;
- if (p < p_end) {
- next = (int) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end);
- } else {
- /* end of input and last char has been processed */
- if (curr < 0) {
- break;
- }
- }
-
- /* on first round, skip */
- if (curr >= 0) {
- /* XXX: could add a fast path to process chunks of input codepoints,
- * but relative benefit would be quite small.
- */
-
- /* Ensure space for maximum multi-character result; estimate is overkill. */
- DUK_BW_ENSURE(thr, bw, 8 * DUK_UNICODE_MAX_XUTF8_LENGTH);
-
- duk__case_transform_helper(thr,
- bw,
- (duk_codepoint_t) curr,
- prev,
- next,
- uppercase);
- }
- }
-
- DUK_BW_COMPACT(thr, bw);
- duk_to_string(ctx, -1); /* invalidates h_buf pointer */
- duk_remove(ctx, -2);
-}
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-
-/*
- * Canonicalize() abstract operation needed for canonicalization of individual
- * codepoints during regexp compilation and execution, see E5 Section 15.10.2.8.
- * Note that codepoints are canonicalized one character at a time, so no context
- * specific rules can apply. Locale specific rules can apply, though.
- */
-
-DUK_INTERNAL duk_codepoint_t duk_unicode_re_canonicalize_char(duk_hthread *thr, duk_codepoint_t cp) {
-#if defined(DUK_USE_REGEXP_CANON_WORKAROUND)
- /* Fast canonicalization lookup at the cost of 128kB footprint. */
- DUK_ASSERT(cp >= 0);
- DUK_UNREF(thr);
- if (DUK_LIKELY(cp < 0x10000L)) {
- return (duk_codepoint_t) duk_unicode_re_canon_lookup[cp];
- }
- return cp;
-#else /* DUK_USE_REGEXP_CANON_WORKAROUND */
- duk_codepoint_t y;
-
- y = duk__case_transform_helper(thr,
- NULL, /* NULL is allowed, no output */
- cp, /* curr char */
- -1, /* prev char */
- -1, /* next char */
- 1); /* uppercase */
-
- if ((y < 0) || (cp >= 0x80 && y < 0x80)) {
- /* multiple codepoint conversion or non-ASCII mapped to ASCII
- * --> leave as is.
- */
- return cp;
- }
-
- return y;
-#endif /* DUK_USE_REGEXP_CANON_WORKAROUND */
-}
-
-/*
- * E5 Section 15.10.2.6 "IsWordChar" abstract operation. Assume
- * x < 0 for characters read outside the string.
- */
-
-DUK_INTERNAL duk_small_int_t duk_unicode_re_is_wordchar(duk_codepoint_t x) {
- /*
- * Note: the description in E5 Section 15.10.2.6 has a typo, it
- * contains 'A' twice and lacks 'a'; the intent is [0-9a-zA-Z_].
- */
- if ((x >= '0' && x <= '9') ||
- (x >= 'a' && x <= 'z') ||
- (x >= 'A' && x <= 'Z') ||
- (x == '_')) {
- return 1;
- }
- return 0;
-}
-
-/*
- * Regexp range tables
- */
-
-/* exposed because lexer needs these too */
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_digit[2] = {
- (duk_uint16_t) 0x0030UL, (duk_uint16_t) 0x0039UL,
-};
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_white[22] = {
- (duk_uint16_t) 0x0009UL, (duk_uint16_t) 0x000DUL,
- (duk_uint16_t) 0x0020UL, (duk_uint16_t) 0x0020UL,
- (duk_uint16_t) 0x00A0UL, (duk_uint16_t) 0x00A0UL,
- (duk_uint16_t) 0x1680UL, (duk_uint16_t) 0x1680UL,
- (duk_uint16_t) 0x180EUL, (duk_uint16_t) 0x180EUL,
- (duk_uint16_t) 0x2000UL, (duk_uint16_t) 0x200AUL,
- (duk_uint16_t) 0x2028UL, (duk_uint16_t) 0x2029UL,
- (duk_uint16_t) 0x202FUL, (duk_uint16_t) 0x202FUL,
- (duk_uint16_t) 0x205FUL, (duk_uint16_t) 0x205FUL,
- (duk_uint16_t) 0x3000UL, (duk_uint16_t) 0x3000UL,
- (duk_uint16_t) 0xFEFFUL, (duk_uint16_t) 0xFEFFUL,
-};
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_wordchar[8] = {
- (duk_uint16_t) 0x0030UL, (duk_uint16_t) 0x0039UL,
- (duk_uint16_t) 0x0041UL, (duk_uint16_t) 0x005AUL,
- (duk_uint16_t) 0x005FUL, (duk_uint16_t) 0x005FUL,
- (duk_uint16_t) 0x0061UL, (duk_uint16_t) 0x007AUL,
-};
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_digit[4] = {
- (duk_uint16_t) 0x0000UL, (duk_uint16_t) 0x002FUL,
- (duk_uint16_t) 0x003AUL, (duk_uint16_t) 0xFFFFUL,
-};
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_white[24] = {
- (duk_uint16_t) 0x0000UL, (duk_uint16_t) 0x0008UL,
- (duk_uint16_t) 0x000EUL, (duk_uint16_t) 0x001FUL,
- (duk_uint16_t) 0x0021UL, (duk_uint16_t) 0x009FUL,
- (duk_uint16_t) 0x00A1UL, (duk_uint16_t) 0x167FUL,
- (duk_uint16_t) 0x1681UL, (duk_uint16_t) 0x180DUL,
- (duk_uint16_t) 0x180FUL, (duk_uint16_t) 0x1FFFUL,
- (duk_uint16_t) 0x200BUL, (duk_uint16_t) 0x2027UL,
- (duk_uint16_t) 0x202AUL, (duk_uint16_t) 0x202EUL,
- (duk_uint16_t) 0x2030UL, (duk_uint16_t) 0x205EUL,
- (duk_uint16_t) 0x2060UL, (duk_uint16_t) 0x2FFFUL,
- (duk_uint16_t) 0x3001UL, (duk_uint16_t) 0xFEFEUL,
- (duk_uint16_t) 0xFF00UL, (duk_uint16_t) 0xFFFFUL,
-};
-DUK_INTERNAL const duk_uint16_t duk_unicode_re_ranges_not_wordchar[10] = {
- (duk_uint16_t) 0x0000UL, (duk_uint16_t) 0x002FUL,
- (duk_uint16_t) 0x003AUL, (duk_uint16_t) 0x0040UL,
- (duk_uint16_t) 0x005BUL, (duk_uint16_t) 0x005EUL,
- (duk_uint16_t) 0x0060UL, (duk_uint16_t) 0x0060UL,
- (duk_uint16_t) 0x007BUL, (duk_uint16_t) 0xFFFFUL,
-};
-
-#endif /* DUK_USE_REGEXP_SUPPORT */
-#line 1 "duk_util_misc.c"
-/*
- * Misc util stuff
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Lowercase digits for radix values 2 to 36. Also doubles as lowercase
- * hex nybble table.
- */
-
-DUK_INTERNAL const duk_uint8_t duk_lc_digits[36] = {
- DUK_ASC_0, DUK_ASC_1, DUK_ASC_2, DUK_ASC_3,
- DUK_ASC_4, DUK_ASC_5, DUK_ASC_6, DUK_ASC_7,
- DUK_ASC_8, DUK_ASC_9, DUK_ASC_LC_A, DUK_ASC_LC_B,
- DUK_ASC_LC_C, DUK_ASC_LC_D, DUK_ASC_LC_E, DUK_ASC_LC_F,
- DUK_ASC_LC_G, DUK_ASC_LC_H, DUK_ASC_LC_I, DUK_ASC_LC_J,
- DUK_ASC_LC_K, DUK_ASC_LC_L, DUK_ASC_LC_M, DUK_ASC_LC_N,
- DUK_ASC_LC_O, DUK_ASC_LC_P, DUK_ASC_LC_Q, DUK_ASC_LC_R,
- DUK_ASC_LC_S, DUK_ASC_LC_T, DUK_ASC_LC_U, DUK_ASC_LC_V,
- DUK_ASC_LC_W, DUK_ASC_LC_X, DUK_ASC_LC_Y, DUK_ASC_LC_Z
-};
-
-DUK_INTERNAL const duk_uint8_t duk_uc_nybbles[16] = {
- DUK_ASC_0, DUK_ASC_1, DUK_ASC_2, DUK_ASC_3,
- DUK_ASC_4, DUK_ASC_5, DUK_ASC_6, DUK_ASC_7,
- DUK_ASC_8, DUK_ASC_9, DUK_ASC_UC_A, DUK_ASC_UC_B,
- DUK_ASC_UC_C, DUK_ASC_UC_D, DUK_ASC_UC_E, DUK_ASC_UC_F
-};
-
-/*
- * Table for hex decoding ASCII hex digits
- */
-
-DUK_INTERNAL const duk_int8_t duk_hex_dectab[256] = {
- /* -1 if invalid */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2f */
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1, -1, -1, -1, -1, -1, /* 0x30-0x3f */
- -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5f */
- -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x60-0x6f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x70-0x7f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80-0x8f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x90-0x9f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa0-0xaf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb0-0xbf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc0-0xcf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd0-0xdf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe0-0xef */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xf0-0xff */
-};
-
-#if defined(DUK_USE_HEX_FASTPATH)
-/* Preshifted << 4. Must use 16-bit entry to allow negative value signaling. */
-DUK_INTERNAL const duk_int16_t duk_hex_dectab_shift4[256] = {
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x00-0x0f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10-0x1f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x20-0x2f */
- 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70, 0x80, 0x90, -1, -1, -1, -1, -1, -1, /* 0x30-0x3f */
- -1, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x40-0x4f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x50-0x5f */
- -1, 0xa0, 0xb0, 0xc0, 0xd0, 0xe0, 0xf0, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x60-0x6f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x70-0x7f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80-0x8f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x90-0x9f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa0-0xaf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb0-0xbf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc0-0xcf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd0-0xdf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe0-0xef */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xf0-0xff */
-};
-#endif
-
-/*
- * Table for hex encoding bytes
- */
-
-#if defined(DUK_USE_HEX_FASTPATH)
-/* Lookup to encode one byte directly into 2 characters:
- *
- * def genhextab(bswap):
- * for i in xrange(256):
- * t = chr(i).encode('hex')
- * if bswap:
- * t = t[1] + t[0]
- * print('0x' + t.encode('hex') + 'U')
- * print('big endian'); genhextab(False)
- * print('little endian'); genhextab(True)
-*/
-DUK_INTERNAL const duk_uint16_t duk_hex_enctab[256] = {
-#if defined(DUK_USE_INTEGER_BE)
- 0x3030U, 0x3031U, 0x3032U, 0x3033U, 0x3034U, 0x3035U, 0x3036U, 0x3037U,
- 0x3038U, 0x3039U, 0x3061U, 0x3062U, 0x3063U, 0x3064U, 0x3065U, 0x3066U,
- 0x3130U, 0x3131U, 0x3132U, 0x3133U, 0x3134U, 0x3135U, 0x3136U, 0x3137U,
- 0x3138U, 0x3139U, 0x3161U, 0x3162U, 0x3163U, 0x3164U, 0x3165U, 0x3166U,
- 0x3230U, 0x3231U, 0x3232U, 0x3233U, 0x3234U, 0x3235U, 0x3236U, 0x3237U,
- 0x3238U, 0x3239U, 0x3261U, 0x3262U, 0x3263U, 0x3264U, 0x3265U, 0x3266U,
- 0x3330U, 0x3331U, 0x3332U, 0x3333U, 0x3334U, 0x3335U, 0x3336U, 0x3337U,
- 0x3338U, 0x3339U, 0x3361U, 0x3362U, 0x3363U, 0x3364U, 0x3365U, 0x3366U,
- 0x3430U, 0x3431U, 0x3432U, 0x3433U, 0x3434U, 0x3435U, 0x3436U, 0x3437U,
- 0x3438U, 0x3439U, 0x3461U, 0x3462U, 0x3463U, 0x3464U, 0x3465U, 0x3466U,
- 0x3530U, 0x3531U, 0x3532U, 0x3533U, 0x3534U, 0x3535U, 0x3536U, 0x3537U,
- 0x3538U, 0x3539U, 0x3561U, 0x3562U, 0x3563U, 0x3564U, 0x3565U, 0x3566U,
- 0x3630U, 0x3631U, 0x3632U, 0x3633U, 0x3634U, 0x3635U, 0x3636U, 0x3637U,
- 0x3638U, 0x3639U, 0x3661U, 0x3662U, 0x3663U, 0x3664U, 0x3665U, 0x3666U,
- 0x3730U, 0x3731U, 0x3732U, 0x3733U, 0x3734U, 0x3735U, 0x3736U, 0x3737U,
- 0x3738U, 0x3739U, 0x3761U, 0x3762U, 0x3763U, 0x3764U, 0x3765U, 0x3766U,
- 0x3830U, 0x3831U, 0x3832U, 0x3833U, 0x3834U, 0x3835U, 0x3836U, 0x3837U,
- 0x3838U, 0x3839U, 0x3861U, 0x3862U, 0x3863U, 0x3864U, 0x3865U, 0x3866U,
- 0x3930U, 0x3931U, 0x3932U, 0x3933U, 0x3934U, 0x3935U, 0x3936U, 0x3937U,
- 0x3938U, 0x3939U, 0x3961U, 0x3962U, 0x3963U, 0x3964U, 0x3965U, 0x3966U,
- 0x6130U, 0x6131U, 0x6132U, 0x6133U, 0x6134U, 0x6135U, 0x6136U, 0x6137U,
- 0x6138U, 0x6139U, 0x6161U, 0x6162U, 0x6163U, 0x6164U, 0x6165U, 0x6166U,
- 0x6230U, 0x6231U, 0x6232U, 0x6233U, 0x6234U, 0x6235U, 0x6236U, 0x6237U,
- 0x6238U, 0x6239U, 0x6261U, 0x6262U, 0x6263U, 0x6264U, 0x6265U, 0x6266U,
- 0x6330U, 0x6331U, 0x6332U, 0x6333U, 0x6334U, 0x6335U, 0x6336U, 0x6337U,
- 0x6338U, 0x6339U, 0x6361U, 0x6362U, 0x6363U, 0x6364U, 0x6365U, 0x6366U,
- 0x6430U, 0x6431U, 0x6432U, 0x6433U, 0x6434U, 0x6435U, 0x6436U, 0x6437U,
- 0x6438U, 0x6439U, 0x6461U, 0x6462U, 0x6463U, 0x6464U, 0x6465U, 0x6466U,
- 0x6530U, 0x6531U, 0x6532U, 0x6533U, 0x6534U, 0x6535U, 0x6536U, 0x6537U,
- 0x6538U, 0x6539U, 0x6561U, 0x6562U, 0x6563U, 0x6564U, 0x6565U, 0x6566U,
- 0x6630U, 0x6631U, 0x6632U, 0x6633U, 0x6634U, 0x6635U, 0x6636U, 0x6637U,
- 0x6638U, 0x6639U, 0x6661U, 0x6662U, 0x6663U, 0x6664U, 0x6665U, 0x6666U
-#else /* DUK_USE_INTEGER_BE */
- 0x3030U, 0x3130U, 0x3230U, 0x3330U, 0x3430U, 0x3530U, 0x3630U, 0x3730U,
- 0x3830U, 0x3930U, 0x6130U, 0x6230U, 0x6330U, 0x6430U, 0x6530U, 0x6630U,
- 0x3031U, 0x3131U, 0x3231U, 0x3331U, 0x3431U, 0x3531U, 0x3631U, 0x3731U,
- 0x3831U, 0x3931U, 0x6131U, 0x6231U, 0x6331U, 0x6431U, 0x6531U, 0x6631U,
- 0x3032U, 0x3132U, 0x3232U, 0x3332U, 0x3432U, 0x3532U, 0x3632U, 0x3732U,
- 0x3832U, 0x3932U, 0x6132U, 0x6232U, 0x6332U, 0x6432U, 0x6532U, 0x6632U,
- 0x3033U, 0x3133U, 0x3233U, 0x3333U, 0x3433U, 0x3533U, 0x3633U, 0x3733U,
- 0x3833U, 0x3933U, 0x6133U, 0x6233U, 0x6333U, 0x6433U, 0x6533U, 0x6633U,
- 0x3034U, 0x3134U, 0x3234U, 0x3334U, 0x3434U, 0x3534U, 0x3634U, 0x3734U,
- 0x3834U, 0x3934U, 0x6134U, 0x6234U, 0x6334U, 0x6434U, 0x6534U, 0x6634U,
- 0x3035U, 0x3135U, 0x3235U, 0x3335U, 0x3435U, 0x3535U, 0x3635U, 0x3735U,
- 0x3835U, 0x3935U, 0x6135U, 0x6235U, 0x6335U, 0x6435U, 0x6535U, 0x6635U,
- 0x3036U, 0x3136U, 0x3236U, 0x3336U, 0x3436U, 0x3536U, 0x3636U, 0x3736U,
- 0x3836U, 0x3936U, 0x6136U, 0x6236U, 0x6336U, 0x6436U, 0x6536U, 0x6636U,
- 0x3037U, 0x3137U, 0x3237U, 0x3337U, 0x3437U, 0x3537U, 0x3637U, 0x3737U,
- 0x3837U, 0x3937U, 0x6137U, 0x6237U, 0x6337U, 0x6437U, 0x6537U, 0x6637U,
- 0x3038U, 0x3138U, 0x3238U, 0x3338U, 0x3438U, 0x3538U, 0x3638U, 0x3738U,
- 0x3838U, 0x3938U, 0x6138U, 0x6238U, 0x6338U, 0x6438U, 0x6538U, 0x6638U,
- 0x3039U, 0x3139U, 0x3239U, 0x3339U, 0x3439U, 0x3539U, 0x3639U, 0x3739U,
- 0x3839U, 0x3939U, 0x6139U, 0x6239U, 0x6339U, 0x6439U, 0x6539U, 0x6639U,
- 0x3061U, 0x3161U, 0x3261U, 0x3361U, 0x3461U, 0x3561U, 0x3661U, 0x3761U,
- 0x3861U, 0x3961U, 0x6161U, 0x6261U, 0x6361U, 0x6461U, 0x6561U, 0x6661U,
- 0x3062U, 0x3162U, 0x3262U, 0x3362U, 0x3462U, 0x3562U, 0x3662U, 0x3762U,
- 0x3862U, 0x3962U, 0x6162U, 0x6262U, 0x6362U, 0x6462U, 0x6562U, 0x6662U,
- 0x3063U, 0x3163U, 0x3263U, 0x3363U, 0x3463U, 0x3563U, 0x3663U, 0x3763U,
- 0x3863U, 0x3963U, 0x6163U, 0x6263U, 0x6363U, 0x6463U, 0x6563U, 0x6663U,
- 0x3064U, 0x3164U, 0x3264U, 0x3364U, 0x3464U, 0x3564U, 0x3664U, 0x3764U,
- 0x3864U, 0x3964U, 0x6164U, 0x6264U, 0x6364U, 0x6464U, 0x6564U, 0x6664U,
- 0x3065U, 0x3165U, 0x3265U, 0x3365U, 0x3465U, 0x3565U, 0x3665U, 0x3765U,
- 0x3865U, 0x3965U, 0x6165U, 0x6265U, 0x6365U, 0x6465U, 0x6565U, 0x6665U,
- 0x3066U, 0x3166U, 0x3266U, 0x3366U, 0x3466U, 0x3566U, 0x3666U, 0x3766U,
- 0x3866U, 0x3966U, 0x6166U, 0x6266U, 0x6366U, 0x6466U, 0x6566U, 0x6666U
-#endif /* DUK_USE_INTEGER_BE */
-};
-#endif /* DUK_USE_HEX_FASTPATH */
-
-/*
- * Table for base-64 encoding
- */
-
-#if defined(DUK_USE_BASE64_FASTPATH)
-DUK_INTERNAL const duk_uint8_t duk_base64_enctab[64] = {
- 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f, 0x50, /* A...P */
- 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, /* Q...f */
- 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f, 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, /* g...v */
- 0x77, 0x78, 0x79, 0x7a, 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x2b, 0x2f /* w.../ */
-};
-#endif /* DUK_USE_BASE64_FASTPATH */
-
-/*
- * Table for base-64 decoding
- */
-
-#if defined(DUK_USE_BASE64_FASTPATH)
-DUK_INTERNAL const duk_int8_t duk_base64_dectab[256] = {
- /* -1 = error, -2 = allowed whitespace, -3 = padding ('='), 0...63 decoded bytes */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -2, -2, -1, -1, -2, -1, -1, /* 0x00...0x0f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x10...0x1f */
- -2, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, -1, 63, /* 0x20...0x2f */
- 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -3, -1, -1, /* 0x30...0x3f */
- -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, /* 0x40...0x4f */
- 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, -1, /* 0x50...0x5f */
- -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, /* 0x60...0x6f */
- 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1, /* 0x70...0x7f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x80...0x8f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0x90...0x9f */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xa0...0xaf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xb0...0xbf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xc0...0xcf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xd0...0xdf */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, /* 0xe0...0xef */
- -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1 /* 0xf0...0xff */
-};
-#endif /* DUK_USE_BASE64_FASTPATH */
-
-/*
- * Arbitrary byteswap for potentially unaligned values
- *
- * Used to byteswap pointers e.g. in debugger code.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) /* For now only needed by the debugger. */
-DUK_INTERNAL void duk_byteswap_bytes(duk_uint8_t *p, duk_small_uint_t len) {
- duk_uint8_t tmp;
- duk_uint8_t *q = p + len - 1;
-
- while (p - q < 0) {
- tmp = *p;
- *p = *q;
- *q = tmp;
- p++;
- q--;
- }
-}
-#endif
-#line 1 "duk_util_hashprime.c"
-/*
- * Round a number upwards to a prime (not usually the nearest one).
- *
- * Uses a table of successive 32-bit primes whose ratio is roughly
- * constant. This keeps the relative upwards 'rounding error' bounded
- * and the data size small. A simple 'predict-correct' compression is
- * used to compress primes to one byte per prime. See genhashsizes.py
- * for details.
- *
- * The minimum prime returned here must be coordinated with the possible
- * probe sequence steps in duk_hobject and duk_heap stringtable.
- */
-
-/* include removed: duk_internal.h */
-
-/* Awkward inclusion condition: drop out of compilation if not needed by any
- * call site: object hash part or probing stringtable.
- */
-#if defined(DUK_USE_HOBJECT_HASH_PART) || defined(DUK_USE_STRTAB_PROBE)
-
-/* hash size ratio goal, must match genhashsizes.py */
-#define DUK__HASH_SIZE_RATIO 1177 /* floor(1.15 * (1 << 10)) */
-
-/* prediction corrections for prime list (see genhashsizes.py) */
-DUK_LOCAL const duk_int8_t duk__hash_size_corrections[] = {
- 17, /* minimum prime */
- 4, 3, 4, 1, 4, 1, 1, 2, 2, 2, 2, 1, 6, 6, 9, 5, 1, 2, 2, 5, 1, 3, 3, 3,
- 5, 4, 4, 2, 4, 8, 3, 4, 23, 2, 4, 7, 8, 11, 2, 12, 15, 10, 1, 1, 5, 1, 5,
- 8, 9, 17, 14, 10, 7, 5, 2, 46, 21, 1, 9, 9, 4, 4, 10, 23, 36, 6, 20, 29,
- 18, 6, 19, 21, 16, 11, 5, 5, 48, 9, 1, 39, 14, 8, 4, 29, 9, 1, 15, 48, 12,
- 22, 6, 15, 27, 4, 2, 17, 28, 8, 9, 4, 5, 8, 3, 3, 8, 37, 11, 15, 8, 30,
- 43, 6, 33, 41, 5, 20, 32, 41, 38, 24, 77, 14, 19, 11, 4, 35, 18, 19, 41,
- 10, 23, 16, 9, 2,
- -1
-};
-
-/* probe steps (see genhashsizes.py), currently assumed to be 32 entries long
- * (DUK_UTIL_GET_HASH_PROBE_STEP macro).
- */
-DUK_INTERNAL duk_uint8_t duk_util_probe_steps[32] = {
- 2, 3, 5, 7, 11, 13, 19, 31, 41, 47, 59, 67, 73, 79, 89, 101, 103, 107,
- 109, 127, 137, 139, 149, 157, 163, 167, 173, 181, 191, 193, 197, 199
-};
-
-DUK_INTERNAL duk_uint32_t duk_util_get_hash_prime(duk_uint32_t size) {
- const duk_int8_t *p = duk__hash_size_corrections;
- duk_uint32_t curr;
-
- curr = (duk_uint32_t) *p++;
- for (;;) {
- duk_small_int_t t = (duk_small_int_t) *p++;
- if (t < 0) {
- /* may happen if size is very close to 2^32-1 */
- break;
- }
-
- /* prediction: portable variant using doubles if 64-bit values not available */
-#ifdef DUK_USE_64BIT_OPS
- curr = (duk_uint32_t) ((((duk_uint64_t) curr) * ((duk_uint64_t) DUK__HASH_SIZE_RATIO)) >> 10);
-#else
- /* 32-bit x 11-bit = 43-bit, fits accurately into a double */
- curr = (duk_uint32_t) DUK_FLOOR(((double) curr) * ((double) DUK__HASH_SIZE_RATIO) / 1024.0);
-#endif
-
- /* correction */
- curr += t;
-
- DUK_DDD(DUK_DDDPRINT("size=%ld, curr=%ld", (long) size, (long) curr));
-
- if (curr >= size) {
- return curr;
- }
- }
- return 0;
-}
-
-#endif /* DUK_USE_HOBJECT_HASH_PART || DUK_USE_STRTAB_PROBE */
-#line 1 "duk_hobject_class.c"
-/*
- * Hobject Ecmascript [[Class]].
- */
-
-/* include removed: duk_internal.h */
-
-#if (DUK_STRIDX_UC_ARGUMENTS > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_BOOLEAN > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_DATE > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_ERROR > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_FUNCTION > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_JSON > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_MATH > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_NUMBER > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_OBJECT > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_REG_EXP > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_STRING > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_GLOBAL > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_OBJ_ENV > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_DEC_ENV > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_BUFFER > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_POINTER > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UC_THREAD > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_ARRAY_BUFFER > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_DATA_VIEW > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_INT8_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UINT8_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UINT8_CLAMPED_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_INT16_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UINT16_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_INT32_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_UINT32_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_FLOAT32_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_FLOAT64_ARRAY > 255)
-#error constant too large
-#endif
-#if (DUK_STRIDX_EMPTY_STRING > 255)
-#error constant too large
-#endif
-
-/* Note: assumes that these string indexes are 8-bit, genstrings.py must ensure that */
-DUK_INTERNAL duk_uint8_t duk_class_number_to_stridx[32] = {
- DUK_STRIDX_EMPTY_STRING, /* UNUSED, intentionally empty */
- DUK_STRIDX_UC_ARGUMENTS,
- DUK_STRIDX_ARRAY,
- DUK_STRIDX_UC_BOOLEAN,
- DUK_STRIDX_DATE,
- DUK_STRIDX_UC_ERROR,
- DUK_STRIDX_UC_FUNCTION,
- DUK_STRIDX_JSON,
- DUK_STRIDX_MATH,
- DUK_STRIDX_UC_NUMBER,
- DUK_STRIDX_UC_OBJECT,
- DUK_STRIDX_REG_EXP,
- DUK_STRIDX_UC_STRING,
- DUK_STRIDX_GLOBAL,
- DUK_STRIDX_OBJ_ENV,
- DUK_STRIDX_DEC_ENV,
- DUK_STRIDX_UC_BUFFER,
- DUK_STRIDX_UC_POINTER,
- DUK_STRIDX_UC_THREAD,
- DUK_STRIDX_ARRAY_BUFFER,
- DUK_STRIDX_DATA_VIEW,
- DUK_STRIDX_INT8_ARRAY,
- DUK_STRIDX_UINT8_ARRAY,
- DUK_STRIDX_UINT8_CLAMPED_ARRAY,
- DUK_STRIDX_INT16_ARRAY,
- DUK_STRIDX_UINT16_ARRAY,
- DUK_STRIDX_INT32_ARRAY,
- DUK_STRIDX_UINT32_ARRAY,
- DUK_STRIDX_FLOAT32_ARRAY,
- DUK_STRIDX_FLOAT64_ARRAY,
- DUK_STRIDX_EMPTY_STRING, /* UNUSED, intentionally empty */
- DUK_STRIDX_EMPTY_STRING, /* UNUSED, intentionally empty */
-};
-#line 1 "duk_alloc_default.c"
-/*
- * Default allocation functions.
- *
- * Assumes behavior such as malloc allowing zero size, yielding
- * a NULL or a unique pointer which is a no-op for free.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS)
-DUK_INTERNAL void *duk_default_alloc_function(void *udata, duk_size_t size) {
- void *res;
- DUK_UNREF(udata);
- res = DUK_ANSI_MALLOC(size);
- DUK_DDD(DUK_DDDPRINT("default alloc function: %lu -> %p",
- (unsigned long) size, (void *) res));
- return res;
-}
-
-DUK_INTERNAL void *duk_default_realloc_function(void *udata, void *ptr, duk_size_t newsize) {
- void *res;
- DUK_UNREF(udata);
- res = DUK_ANSI_REALLOC(ptr, newsize);
- DUK_DDD(DUK_DDDPRINT("default realloc function: %p %lu -> %p",
- (void *) ptr, (unsigned long) newsize, (void *) res));
- return res;
-}
-
-DUK_INTERNAL void duk_default_free_function(void *udata, void *ptr) {
- DUK_DDD(DUK_DDDPRINT("default free function: %p", (void *) ptr));
- DUK_UNREF(udata);
- DUK_ANSI_FREE(ptr);
-}
-#endif /* DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS */
-#line 1 "duk_api_buffer.c"
-/*
- * Buffer
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size_t new_size) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hbuffer_dynamic *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index);
- DUK_ASSERT(h != NULL);
-
- if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) {
- DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE);
- }
-
- /* maximum size check is handled by callee */
- duk_hbuffer_resize(thr, h, new_size);
-
- return DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h);
-}
-
-DUK_EXTERNAL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hbuffer_dynamic *h;
- void *ptr;
- duk_size_t sz;
-
- DUK_ASSERT(ctx != NULL);
-
- h = (duk_hbuffer_dynamic *) duk_require_hbuffer(ctx, index);
- DUK_ASSERT(h != NULL);
-
- if (!(DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h))) {
- DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE);
- }
-
- /* Forget the previous allocation, setting size to 0 and alloc to
- * NULL. Caller is responsible for freeing the previous allocation.
- * Getting the allocation and clearing it is done in the same API
- * call to avoid any chance of a realloc.
- */
- ptr = DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h);
- sz = DUK_HBUFFER_DYNAMIC_GET_SIZE(h);
- if (out_size) {
- *out_size = sz;
- }
- DUK_HBUFFER_DYNAMIC_SET_DATA_PTR_NULL(thr->heap, h);
- DUK_HBUFFER_DYNAMIC_SET_SIZE(h, 0);
-
- return ptr;
-}
-
-DUK_EXTERNAL void duk_config_buffer(duk_context *ctx, duk_idx_t index, void *ptr, duk_size_t len) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hbuffer_external *h;
-
- DUK_ASSERT(ctx != NULL);
-
- h = (duk_hbuffer_external *) duk_require_hbuffer(ctx, index);
- DUK_ASSERT(h != NULL);
-
- if (!DUK_HBUFFER_HAS_EXTERNAL(h)) {
- DUK_ERROR_TYPE(thr, DUK_STR_WRONG_BUFFER_TYPE);
- }
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h));
-
- DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(thr->heap, h, ptr);
- DUK_HBUFFER_EXTERNAL_SET_SIZE(h, len);
-}
-#line 1 "duk_api_bytecode.c"
-/*
- * Bytecode dump/load
- *
- * The bytecode load primitive is more important performance-wise than the
- * dump primitive.
- *
- * Unlike most Duktape API calls, bytecode dump/load is not guaranteed to be
- * memory safe for invalid arguments - caller beware! There's little point
- * in trying to achieve memory safety unless bytecode instructions are also
- * validated which is not easy to do with indirect register references etc.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_BYTECODE_DUMP_SUPPORT)
-
-#define DUK__SER_MARKER 0xff
-#define DUK__SER_VERSION 0x00
-#define DUK__SER_STRING 0x00
-#define DUK__SER_NUMBER 0x01
-#define DUK__BYTECODE_INITIAL_ALLOC 256
-
-/*
- * Dump/load helpers, xxx_raw() helpers do no buffer checks
- */
-
-DUK_LOCAL duk_uint8_t *duk__load_string_raw(duk_context *ctx, duk_uint8_t *p) {
- duk_uint32_t len;
-
- len = DUK_RAW_READ_U32_BE(p);
- duk_push_lstring(ctx, (const char *) p, len);
- p += len;
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__load_buffer_raw(duk_context *ctx, duk_uint8_t *p) {
- duk_uint32_t len;
- duk_uint8_t *buf;
-
- len = DUK_RAW_READ_U32_BE(p);
- buf = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- DUK_ASSERT(buf != NULL);
- DUK_MEMCPY((void *) buf, (const void *) p, (size_t) len);
- p += len;
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_hstring_raw(duk_uint8_t *p, duk_hstring *h) {
- duk_size_t len;
- duk_uint32_t tmp32;
-
- DUK_ASSERT(h != NULL);
-
- len = DUK_HSTRING_GET_BYTELEN(h);
- DUK_ASSERT(len <= 0xffffffffUL); /* string limits */
- tmp32 = (duk_uint32_t) len;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- DUK_MEMCPY((void *) p,
- (const void *) DUK_HSTRING_GET_DATA(h),
- len);
- p += len;
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_hbuffer_raw(duk_hthread *thr, duk_uint8_t *p, duk_hbuffer *h) {
- duk_size_t len;
- duk_uint32_t tmp32;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(h != NULL);
- DUK_UNREF(thr);
-
- len = DUK_HBUFFER_GET_SIZE(h);
- DUK_ASSERT(len <= 0xffffffffUL); /* buffer limits */
- tmp32 = (duk_uint32_t) len;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- DUK_MEMCPY((void *) p,
- (const void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h),
- len);
- p += len;
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_string_prop(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func, duk_small_uint_t stridx) {
- duk_hstring *h_str;
- duk_tval *tv;
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) func, DUK_HTHREAD_GET_STRING(thr, stridx));
- if (tv != NULL && DUK_TVAL_IS_STRING(tv)) {
- h_str = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h_str != NULL);
- } else {
- h_str = DUK_HTHREAD_STRING_EMPTY_STRING(thr);
- DUK_ASSERT(h_str != NULL);
- }
- DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4 + DUK_HSTRING_GET_BYTELEN(h_str), p);
- p = duk__dump_hstring_raw(p, h_str);
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_buffer_prop(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func, duk_small_uint_t stridx) {
- duk_tval *tv;
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) func, DUK_HTHREAD_GET_STRING(thr, stridx));
- if (tv != NULL && DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h_buf;
- h_buf = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h_buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4 + DUK_HBUFFER_GET_SIZE(h_buf), p);
- p = duk__dump_hbuffer_raw(thr, p, h_buf);
- } else {
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4, p);
- DUK_RAW_WRITE_U32_BE(p, 0);
- }
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_uint32_prop(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func, duk_small_uint_t stridx, duk_uint32_t def_value) {
- duk_tval *tv;
- duk_uint32_t val;
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) func, DUK_HTHREAD_GET_STRING(thr, stridx));
- if (tv != NULL && DUK_TVAL_IS_NUMBER(tv)) {
- val = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv);
- } else {
- val = def_value;
- }
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4, p);
- DUK_RAW_WRITE_U32_BE(p, val);
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_varmap(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func) {
- duk_tval *tv;
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) func, DUK_HTHREAD_STRING_INT_VARMAP(thr));
- if (tv != NULL && DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h;
- duk_uint_fast32_t i;
-
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- /* We know _Varmap only has own properties so walk property
- * table directly. We also know _Varmap is dense and all
- * values are numbers; assert for these. GC and finalizers
- * shouldn't affect _Varmap so side effects should be fine.
- */
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
- duk_hstring *key;
- duk_tval *tv_val;
- duk_uint32_t val;
-
- key = DUK_HOBJECT_E_GET_KEY(thr->heap, h, i);
- DUK_ASSERT(key != NULL); /* _Varmap is dense */
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h, i));
- tv_val = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h, i);
- DUK_ASSERT(tv_val != NULL);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_val)); /* known to be number; in fact an integer */
-#if defined(DUK_USE_FASTINT)
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv_val));
- DUK_ASSERT(DUK_TVAL_GET_FASTINT(tv_val) == (duk_int64_t) DUK_TVAL_GET_FASTINT_U32(tv_val)); /* known to be 32-bit */
- val = DUK_TVAL_GET_FASTINT_U32(tv_val);
-#else
- val = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv_val);
-#endif
-
- DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4 + DUK_HSTRING_GET_BYTELEN(key) + 4, p);
- p = duk__dump_hstring_raw(p, key);
- DUK_RAW_WRITE_U32_BE(p, val);
- }
- }
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4, p);
- DUK_RAW_WRITE_U32_BE(p, 0); /* end of _Varmap */
- return p;
-}
-
-DUK_LOCAL duk_uint8_t *duk__dump_formals(duk_hthread *thr, duk_uint8_t *p, duk_bufwriter_ctx *bw_ctx, duk_hobject *func) {
- duk_tval *tv;
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) func, DUK_HTHREAD_STRING_INT_FORMALS(thr));
- if (tv != NULL && DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h;
- duk_uint_fast32_t i;
-
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- /* We know _Formals is dense and all entries will be in the
- * array part. GC and finalizers shouldn't affect _Formals
- * so side effects should be fine.
- */
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
- duk_tval *tv_val;
- duk_hstring *varname;
-
- tv_val = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, h, i);
- DUK_ASSERT(tv_val != NULL);
- if (DUK_TVAL_IS_STRING(tv_val)) {
- /* Array is dense and contains only strings, but ASIZE may
- * be larger than used part and there are UNUSED entries.
- */
- varname = DUK_TVAL_GET_STRING(tv_val);
- DUK_ASSERT(varname != NULL);
-
- DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4 + DUK_HSTRING_GET_BYTELEN(varname), p);
- p = duk__dump_hstring_raw(p, varname);
- }
- }
- }
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 4, p);
- DUK_RAW_WRITE_U32_BE(p, 0); /* end of _Formals */
- return p;
-}
-
-static duk_uint8_t *duk__dump_func(duk_context *ctx, duk_hcompiledfunction *func, duk_bufwriter_ctx *bw_ctx, duk_uint8_t *p) {
- duk_hthread *thr;
- duk_tval *tv, *tv_end;
- duk_instr_t *ins, *ins_end;
- duk_hobject **fn, **fn_end;
- duk_hstring *h_str;
- duk_uint32_t count_instr;
- duk_uint32_t tmp32;
- duk_uint16_t tmp16;
- duk_double_t d;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(ctx);
- DUK_UNREF(thr);
-
- DUK_DD(DUK_DDPRINT("dumping function %p to %p: "
- "consts=[%p,%p[ (%ld bytes, %ld items), "
- "funcs=[%p,%p[ (%ld bytes, %ld items), "
- "code=[%p,%p[ (%ld bytes, %ld items)",
- (void *) func,
- (void *) p,
- (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, func),
- (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_CONSTS_SIZE(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(thr->heap, func),
- (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, func),
- (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_SIZE(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, func),
- (void *) DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, func),
- (void *) DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE(thr->heap, func),
- (long) DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(thr->heap, func)));
-
- DUK_ASSERT(DUK_USE_ESBC_MAX_BYTES <= 0x7fffffffUL); /* ensures no overflow */
- count_instr = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_CODE_COUNT(thr->heap, func);
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 3 * 4 + 2 * 2 + 3 * 4 + count_instr * 4, p);
-
- /* Fixed header info. */
- tmp32 = count_instr;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- tmp32 = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(thr->heap, func);
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- tmp32 = (duk_uint32_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, func);
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- tmp16 = func->nregs;
- DUK_RAW_WRITE_U16_BE(p, tmp16);
- tmp16 = func->nargs;
- DUK_RAW_WRITE_U16_BE(p, tmp16);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- tmp32 = func->start_line;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- tmp32 = func->end_line;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
-#else
- DUK_RAW_WRITE_U32_BE(p, 0);
- DUK_RAW_WRITE_U32_BE(p, 0);
-#endif
- tmp32 = ((duk_heaphdr *) func)->h_flags & DUK_HEAPHDR_FLAGS_FLAG_MASK;
- DUK_RAW_WRITE_U32_BE(p, tmp32);
-
- /* Bytecode instructions: endian conversion needed unless
- * platform is big endian.
- */
- ins = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, func);
- ins_end = DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, func);
- DUK_ASSERT((duk_size_t) (ins_end - ins) == (duk_size_t) count_instr);
-#if defined(DUK_USE_INTEGER_BE)
- DUK_MEMCPY((void *) p, (const void *) ins, (size_t) (ins_end - ins));
- p += (size_t) (ins_end - ins);
-#else
- while (ins != ins_end) {
- tmp32 = (duk_uint32_t) (*ins);
- DUK_RAW_WRITE_U32_BE(p, tmp32);
- ins++;
- }
-#endif
-
- /* Constants: variable size encoding. */
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, func);
- tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, func);
- while (tv != tv_end) {
- /* constants are strings or numbers now */
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv) ||
- DUK_TVAL_IS_NUMBER(tv));
-
- if (DUK_TVAL_IS_STRING(tv)) {
- h_str = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h_str != NULL);
- DUK_ASSERT(DUK_HSTRING_MAX_BYTELEN <= 0x7fffffffUL); /* ensures no overflow */
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1 + 4 + DUK_HSTRING_GET_BYTELEN(h_str), p),
- *p++ = DUK__SER_STRING;
- p = duk__dump_hstring_raw(p, h_str);
- } else {
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- p = DUK_BW_ENSURE_RAW(thr, bw_ctx, 1 + 8, p);
- *p++ = DUK__SER_NUMBER;
- d = DUK_TVAL_GET_NUMBER(tv);
- DUK_RAW_WRITE_DOUBLE_BE(p, d);
- }
- tv++;
- }
-
- /* Inner functions recursively. */
- fn = (duk_hobject **) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, func);
- fn_end = (duk_hobject **) DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, func);
- while (fn != fn_end) {
- /* XXX: This causes recursion up to inner function depth
- * which is normally not an issue, e.g. mark-and-sweep uses
- * a recursion limiter to avoid C stack issues. Avoiding
- * this would mean some sort of a work list or just refusing
- * to serialize deep functions.
- */
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(*fn));
- p = duk__dump_func(ctx, (duk_hcompiledfunction *) *fn, bw_ctx, p);
- fn++;
- }
-
- /* Object extra properties.
- *
- * There are some difference between function templates and functions.
- * For example, function templates don't have .length and nargs is
- * normally used to instantiate the functions.
- */
-
- p = duk__dump_uint32_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_LENGTH, (duk_uint32_t) func->nargs);
- p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_NAME);
- p = duk__dump_string_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_FILE_NAME);
- p = duk__dump_buffer_prop(thr, p, bw_ctx, (duk_hobject *) func, DUK_STRIDX_INT_PC2LINE);
- p = duk__dump_varmap(thr, p, bw_ctx, (duk_hobject *) func);
- p = duk__dump_formals(thr, p, bw_ctx, (duk_hobject *) func);
-
- DUK_DD(DUK_DDPRINT("serialized function %p -> final pointer %p", (void *) func, (void *) p));
-
- return p;
-}
-
-/* Load a function from bytecode. The function object returned here must
- * match what is created by duk_js_push_closure() with respect to its flags,
- * properties, etc.
- *
- * NOTE: there are intentionally no input buffer length / bound checks.
- * Adding them would be easy but wouldn't ensure memory safety as untrusted
- * or broken bytecode is unsafe during execution unless the opcodes themselves
- * are validated (which is quite complex, especially for indirect opcodes).
- */
-
-#define DUK__ASSERT_LEFT(n) do { \
- DUK_ASSERT((duk_size_t) (p_end - p) >= (duk_size_t) (n)); \
- } while (0)
-
-static duk_uint8_t *duk__load_func(duk_context *ctx, duk_uint8_t *p, duk_uint8_t *p_end) {
- duk_hthread *thr;
- duk_hcompiledfunction *h_fun;
- duk_hbuffer *h_data;
- duk_size_t data_size;
- duk_uint32_t count_instr, count_const, count_funcs;
- duk_uint32_t n;
- duk_uint32_t tmp32;
- duk_small_uint_t const_type;
- duk_uint8_t *fun_data;
- duk_uint8_t *q;
- duk_idx_t idx_base;
- duk_tval *tv1;
- duk_uarridx_t arr_idx;
-
- /* XXX: There's some overlap with duk_js_closure() here, but
- * seems difficult to share code. Ensure that the final function
- * looks the same as created by duk_js_closure().
- */
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
-
- DUK_DD(DUK_DDPRINT("loading function, p=%p, p_end=%p", (void *) p, (void *) p_end));
-
- DUK__ASSERT_LEFT(3 * 4);
- count_instr = DUK_RAW_READ_U32_BE(p);
- count_const = DUK_RAW_READ_U32_BE(p);
- count_funcs = DUK_RAW_READ_U32_BE(p);
-
- data_size = sizeof(duk_tval) * count_const +
- sizeof(duk_hobject *) * count_funcs +
- sizeof(duk_instr_t) * count_instr;
-
- DUK_DD(DUK_DDPRINT("instr=%ld, const=%ld, funcs=%ld, data_size=%ld",
- (long) count_instr, (long) count_const,
- (long) count_const, (long) data_size));
-
- /* Value stack is used to ensure reachability of constants and
- * inner functions being loaded. Require enough space to handle
- * large functions correctly.
- */
- duk_require_stack(ctx, 2 + count_const + count_funcs);
- idx_base = duk_get_top(ctx);
-
- /* Push function object, init flags etc. This must match
- * duk_js_push_closure() quite carefully.
- */
- duk_push_compiledfunction(ctx);
- h_fun = duk_get_hcompiledfunction(ctx, -1);
- DUK_ASSERT(h_fun != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) h_fun));
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, h_fun) == NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, h_fun) == NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, h_fun) == NULL);
-
- h_fun->nregs = DUK_RAW_READ_U16_BE(p);
- h_fun->nargs = DUK_RAW_READ_U16_BE(p);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- h_fun->start_line = DUK_RAW_READ_U32_BE(p);
- h_fun->end_line = DUK_RAW_READ_U32_BE(p);
-#else
- p += 8; /* skip line info */
-#endif
-
- /* duk_hcompiledfunction flags; quite version specific */
- tmp32 = DUK_RAW_READ_U32_BE(p);
- DUK_HEAPHDR_SET_FLAGS((duk_heaphdr *) h_fun, tmp32);
-
- /* standard prototype */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, &h_fun->obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
-
- /* assert just a few critical flags */
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h_fun) == DUK_HTYPE_OBJECT);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(&h_fun->obj));
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(&h_fun->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(&h_fun->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_THREAD(&h_fun->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(&h_fun->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(&h_fun->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(&h_fun->obj));
-
- /* Create function 'data' buffer but don't attach it yet. */
- fun_data = (duk_uint8_t *) duk_push_fixed_buffer(ctx, data_size);
- DUK_ASSERT(fun_data != NULL);
-
- /* Load bytecode instructions. */
- DUK_ASSERT(sizeof(duk_instr_t) == 4);
- DUK__ASSERT_LEFT(count_instr * sizeof(duk_instr_t));
-#if defined(DUK_USE_INTEGER_BE)
- q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs;
- DUK_MEMCPY((void *) q,
- (const void *) p,
- sizeof(duk_instr_t) * count_instr);
- p += sizeof(duk_instr_t) * count_instr;
-#else
- q = fun_data + sizeof(duk_tval) * count_const + sizeof(duk_hobject *) * count_funcs;
- for (n = count_instr; n > 0; n--) {
- *((duk_instr_t *) (void *) q) = DUK_RAW_READ_U32_BE(p);
- q += sizeof(duk_instr_t);
- }
-#endif
-
- /* Load constants onto value stack but don't yet copy to buffer. */
- for (n = count_const; n > 0; n--) {
- DUK__ASSERT_LEFT(1);
- const_type = DUK_RAW_READ_U8(p);
- switch (const_type) {
- case DUK__SER_STRING: {
- p = duk__load_string_raw(ctx, p);
- break;
- }
- case DUK__SER_NUMBER: {
- /* Important to do a fastint check so that constants are
- * properly read back as fastints.
- */
- duk_tval tv_tmp;
- duk_double_t val;
- DUK__ASSERT_LEFT(8);
- val = DUK_RAW_READ_DOUBLE_BE(p);
- DUK_TVAL_SET_NUMBER_CHKFAST(&tv_tmp, val);
- duk_push_tval(ctx, &tv_tmp);
- break;
- }
- default: {
- goto format_error;
- }
- }
- }
-
- /* Load inner functions to value stack, but don't yet copy to buffer. */
- for (n = count_funcs; n > 0; n--) {
- p = duk__load_func(ctx, p, p_end);
- if (p == NULL) {
- goto format_error;
- }
- }
-
- /* With constants and inner functions on value stack, we can now
- * atomically finish the function 'data' buffer, bump refcounts,
- * etc.
- *
- * Here we take advantage of the value stack being just a duk_tval
- * array: we can just memcpy() the constants as long as we incref
- * them afterwards.
- */
-
- h_data = (duk_hbuffer *) duk_get_hbuffer(ctx, idx_base + 1);
- DUK_ASSERT(h_data != NULL);
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC(h_data));
- DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, h_fun, h_data);
- DUK_HBUFFER_INCREF(thr, h_data);
-
- tv1 = duk_get_tval(ctx, idx_base + 2); /* may be NULL if no constants or inner funcs */
- DUK_ASSERT((count_const == 0 && count_funcs == 0) || tv1 != NULL);
-
- q = fun_data;
- if (count_const > 0) {
- /* Explicit zero size check to avoid NULL 'tv1'. */
- DUK_MEMCPY((void *) q, (const void *) tv1, sizeof(duk_tval) * count_const);
- for (n = count_const; n > 0; n--) {
- DUK_TVAL_INCREF_FAST(thr, (duk_tval *) (void *) q); /* no side effects */
- q += sizeof(duk_tval);
- }
- tv1 += count_const;
- }
-
- DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, h_fun, (duk_hobject **) (void *) q);
- for (n = count_funcs; n > 0; n--) {
- duk_hobject *h_obj;
-
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1));
- h_obj = DUK_TVAL_GET_OBJECT(tv1);
- DUK_ASSERT(h_obj != NULL);
- tv1++;
- DUK_HOBJECT_INCREF(thr, h_obj);
-
- *((duk_hobject **) (void *) q) = h_obj;
- q += sizeof(duk_hobject *);
- }
-
- DUK_HCOMPILEDFUNCTION_SET_BYTECODE(thr->heap, h_fun, (duk_instr_t *) (void *) q);
-
- /* The function object is now reachable and refcounts are fine,
- * so we can pop off all the temporaries.
- */
- DUK_DDD(DUK_DDDPRINT("function is reachable, reset top; func: %!iT", duk_get_tval(ctx, idx_base)));
- duk_set_top(ctx, idx_base + 1);
-
- /* Setup function properties. */
- tmp32 = DUK_RAW_READ_U32_BE(p);
- duk_push_u32(ctx, tmp32);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE);
-
- p = duk__load_string_raw(ctx, p);
- if (DUK_HOBJECT_HAS_NAMEBINDING((duk_hobject *) h_fun)) {
- /* Original function instance/template had NAMEBINDING.
- * Must create a lexical environment on loading to allow
- * recursive functions like 'function foo() { foo(); }'.
- */
- duk_hobject *proto;
-
- proto = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
- proto);
- duk_dup(ctx, -2); /* -> [ func funcname env funcname ] */
- duk_dup(ctx, idx_base); /* -> [ func funcname env funcname func ] */
- duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_NONE); /* -> [ func funcname env ] */
- duk_xdef_prop_stridx(ctx, idx_base, DUK_STRIDX_INT_LEXENV, DUK_PROPDESC_FLAGS_WC);
- /* since closure has NEWENV, never define DUK_STRIDX_INT_VARENV, as it
- * will be ignored anyway
- */
- }
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
-
- p = duk__load_string_raw(ctx, p);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_WC);
-
- duk_push_object(ctx);
- duk_dup(ctx, -2);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_CONSTRUCTOR, DUK_PROPDESC_FLAGS_WC); /* func.prototype.constructor = func */
- duk_compact(ctx, -1);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_W);
-
- p = duk__load_buffer_raw(ctx, p);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_PC2LINE, DUK_PROPDESC_FLAGS_WC);
-
- duk_push_object(ctx); /* _Varmap */
- for (;;) {
- /* XXX: awkward */
- p = duk__load_string_raw(ctx, p);
- if (duk_get_length(ctx, -1) == 0) {
- duk_pop(ctx);
- break;
- }
- tmp32 = DUK_RAW_READ_U32_BE(p);
- duk_push_u32(ctx, tmp32);
- duk_put_prop(ctx, -3);
- }
- duk_compact(ctx, -1);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VARMAP, DUK_PROPDESC_FLAGS_NONE);
-
- duk_push_array(ctx); /* _Formals */
- for (arr_idx = 0; ; arr_idx++) {
- /* XXX: awkward */
- p = duk__load_string_raw(ctx, p);
- if (duk_get_length(ctx, -1) == 0) {
- duk_pop(ctx);
- break;
- }
- duk_put_prop_index(ctx, -2, arr_idx);
- }
- duk_compact(ctx, -1);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_FORMALS, DUK_PROPDESC_FLAGS_NONE);
-
- /* Return with final function pushed on stack top. */
- DUK_DD(DUK_DDPRINT("final loaded function: %!iT", duk_get_tval(ctx, -1)));
- DUK_ASSERT_TOP(ctx, idx_base + 1);
- return p;
-
- format_error:
- return NULL;
-}
-
-DUK_EXTERNAL void duk_dump_function(duk_context *ctx) {
- duk_hthread *thr;
- duk_hcompiledfunction *func;
- duk_bufwriter_ctx bw_ctx_alloc;
- duk_bufwriter_ctx *bw_ctx = &bw_ctx_alloc;
- duk_uint8_t *p;
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
-
- /* Bound functions don't have all properties so we'd either need to
- * lookup the non-bound target function or reject bound functions.
- * For now, bound functions are rejected.
- */
- func = duk_require_hcompiledfunction(ctx, -1);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(&func->obj));
-
- /* Estimating the result size beforehand would be costly, so
- * start with a reasonable size and extend as needed.
- */
- DUK_BW_INIT_PUSHBUF(thr, bw_ctx, DUK__BYTECODE_INITIAL_ALLOC);
- p = DUK_BW_GET_PTR(thr, bw_ctx);
- *p++ = DUK__SER_MARKER;
- *p++ = DUK__SER_VERSION;
- p = duk__dump_func(ctx, func, bw_ctx, p);
- DUK_BW_SET_PTR(thr, bw_ctx, p);
- DUK_BW_COMPACT(thr, bw_ctx);
-
- DUK_DD(DUK_DDPRINT("serialized result: %!T", duk_get_tval(ctx, -1)));
-
- duk_remove(ctx, -2); /* [ ... func buf ] -> [ ... buf ] */
-}
-
-DUK_EXTERNAL void duk_load_function(duk_context *ctx) {
- duk_hthread *thr;
- duk_uint8_t *p_buf, *p, *p_end;
- duk_size_t sz;
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(ctx);
-
- p_buf = (duk_uint8_t *) duk_require_buffer(ctx, -1, &sz);
- DUK_ASSERT(p_buf != NULL);
-
- /* The caller is responsible for being sure that bytecode being loaded
- * is valid and trusted. Invalid bytecode can cause memory unsafe
- * behavior directly during loading or later during bytecode execution
- * (instruction validation would be quite complex to implement).
- *
- * This signature check is the only sanity check for detecting
- * accidental invalid inputs. The initial 0xFF byte ensures no
- * ordinary string will be accepted by accident.
- */
- p = p_buf;
- p_end = p_buf + sz;
- if (sz < 2 || p[0] != DUK__SER_MARKER || p[1] != DUK__SER_VERSION) {
- goto format_error;
- }
- p += 2;
-
- p = duk__load_func(ctx, p, p_end);
- if (p == NULL) {
- goto format_error;
- }
-
- duk_remove(ctx, -2); /* [ ... buf func ] -> [ ... func ] */
- return;
-
- format_error:
- DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
-}
-
-#undef DUK__SER_MARKER
-#undef DUK__SER_VERSION
-#undef DUK__SER_STRING
-#undef DUK__SER_NUMBER
-#undef DUK__BYTECODE_INITIAL_ALLOC
-
-#else /* DUK_USE_BYTECODE_DUMP_SUPPORT */
-
-DUK_EXTERNAL void duk_dump_function(duk_context *ctx) {
- DUK_ERROR_UNSUPPORTED_DEFMSG((duk_hthread *) ctx);
-}
-
-DUK_EXTERNAL void duk_load_function(duk_context *ctx) {
- DUK_ERROR_UNSUPPORTED_DEFMSG((duk_hthread *) ctx);
-}
-
-#endif /* DUK_USE_BYTECODE_DUMP_SUPPORT */
-#line 1 "duk_api_call.c"
-/*
- * Calls.
- *
- * Protected variants should avoid ever throwing an error.
- */
-
-/* include removed: duk_internal.h */
-
-/* Prepare value stack for a method call through an object property.
- * May currently throw an error e.g. when getting the property.
- */
-DUK_LOCAL void duk__call_prop_prep_stack(duk_context *ctx, duk_idx_t normalized_obj_index, duk_idx_t nargs) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_DDD(DUK_DDDPRINT("duk__call_prop_prep_stack, normalized_obj_index=%ld, nargs=%ld, stacktop=%ld",
- (long) normalized_obj_index, (long) nargs, (long) duk_get_top(ctx)));
-
- /* [... key arg1 ... argN] */
-
- /* duplicate key */
- duk_dup(ctx, -nargs - 1); /* Note: -nargs alone would fail for nargs == 0, this is OK */
- duk_get_prop(ctx, normalized_obj_index);
-
- DUK_DDD(DUK_DDDPRINT("func: %!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [... key arg1 ... argN func] */
-
- duk_replace(ctx, -nargs - 2);
-
- /* [... func arg1 ... argN] */
-
- duk_dup(ctx, normalized_obj_index);
- duk_insert(ctx, -nargs - 1);
-
- /* [... func this arg1 ... argN] */
-}
-
-DUK_EXTERNAL void duk_call(duk_context *ctx, duk_idx_t nargs) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_uint_t call_flags;
- duk_idx_t idx_func;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- idx_func = duk_get_top(ctx) - nargs - 1;
- if (idx_func < 0 || nargs < 0) {
- /* note that we can't reliably pop anything here */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- }
-
- /* XXX: awkward; we assume there is space for this, overwrite
- * directly instead?
- */
- duk_push_undefined(ctx);
- duk_insert(ctx, idx_func + 1);
-
- call_flags = 0; /* not protected, respect reclimit, not constructor */
-
- duk_handle_call_unprotected(thr, /* thread */
- nargs, /* num_stack_args */
- call_flags); /* call_flags */
-}
-
-DUK_EXTERNAL void duk_call_method(duk_context *ctx, duk_idx_t nargs) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_uint_t call_flags;
- duk_idx_t idx_func;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- idx_func = duk_get_top(ctx) - nargs - 2; /* must work for nargs <= 0 */
- if (idx_func < 0 || nargs < 0) {
- /* note that we can't reliably pop anything here */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- }
-
- call_flags = 0; /* not protected, respect reclimit, not constructor */
-
- duk_handle_call_unprotected(thr, /* thread */
- nargs, /* num_stack_args */
- call_flags); /* call_flags */
-}
-
-DUK_EXTERNAL void duk_call_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs) {
- /*
- * XXX: if duk_handle_call() took values through indices, this could be
- * made much more sensible. However, duk_handle_call() needs to fudge
- * the 'this' and 'func' values to handle bound function chains, which
- * is now done "in-place", so this is not a trivial change.
- */
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index); /* make absolute */
-
- duk__call_prop_prep_stack(ctx, obj_index, nargs);
-
- duk_call_method(ctx, nargs);
-}
-
-DUK_EXTERNAL duk_int_t duk_pcall(duk_context *ctx, duk_idx_t nargs) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_uint_t call_flags;
- duk_idx_t idx_func;
- duk_int_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- idx_func = duk_get_top(ctx) - nargs - 1; /* must work for nargs <= 0 */
- if (idx_func < 0 || nargs < 0) {
- /* We can't reliably pop anything here because the stack input
- * shape is incorrect. So we throw an error; if the caller has
- * no catch point for this, a fatal error will occur. Another
- * alternative would be to just return an error. But then the
- * stack would be in an unknown state which might cause some
- * very hard to diagnose problems later on. Also note that even
- * if we did not throw an error here, the underlying call handler
- * might STILL throw an out-of-memory error or some other internal
- * fatal error.
- */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return DUK_EXEC_ERROR; /* unreachable */
- }
-
- /* awkward; we assume there is space for this */
- duk_push_undefined(ctx);
- duk_insert(ctx, idx_func + 1);
-
- call_flags = 0; /* respect reclimit, not constructor */
-
- rc = duk_handle_call_protected(thr, /* thread */
- nargs, /* num_stack_args */
- call_flags); /* call_flags */
-
- return rc;
-}
-
-DUK_EXTERNAL duk_int_t duk_pcall_method(duk_context *ctx, duk_idx_t nargs) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_uint_t call_flags;
- duk_idx_t idx_func;
- duk_int_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- idx_func = duk_get_top(ctx) - nargs - 2; /* must work for nargs <= 0 */
- if (idx_func < 0 || nargs < 0) {
- /* See comments in duk_pcall(). */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return DUK_EXEC_ERROR; /* unreachable */
- }
-
- call_flags = 0; /* respect reclimit, not constructor */
-
- rc = duk_handle_call_protected(thr, /* thread */
- nargs, /* num_stack_args */
- call_flags); /* call_flags */
-
- return rc;
-}
-
-DUK_LOCAL duk_ret_t duk__pcall_prop_raw(duk_context *ctx) {
- duk_idx_t obj_index;
- duk_idx_t nargs;
-
- /* Get the original arguments. Note that obj_index may be a relative
- * index so the stack must have the same top when we use it.
- */
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = (duk_idx_t) duk_get_int(ctx, -2);
- nargs = (duk_idx_t) duk_get_int(ctx, -1);
- duk_pop_2(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index); /* make absolute */
- duk__call_prop_prep_stack(ctx, obj_index, nargs);
- duk_call_method(ctx, nargs);
- return 1;
-}
-
-DUK_EXTERNAL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs) {
- /*
- * Must be careful to catch errors related to value stack manipulation
- * and property lookup, not just the call itself.
- */
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_push_idx(ctx, obj_index);
- duk_push_idx(ctx, nargs);
-
- /* Inputs: explicit arguments (nargs), +1 for key, +2 for obj_index/nargs passing.
- * If the value stack does not contain enough args, an error is thrown; this matches
- * behavior of the other protected call API functions.
- */
- return duk_safe_call(ctx, duk__pcall_prop_raw, nargs + 1 + 2 /*nargs*/, 1 /*nrets*/);
-}
-
-DUK_EXTERNAL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, duk_idx_t nargs, duk_idx_t nrets) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_int_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- if (duk_get_top(ctx) < nargs || nrets < 0) {
- /* See comments in duk_pcall(). */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return DUK_EXEC_ERROR; /* unreachable */
- }
-
- rc = duk_handle_safe_call(thr, /* thread */
- func, /* func */
- nargs, /* num_stack_args */
- nrets); /* num_stack_res */
-
- return rc;
-}
-
-DUK_EXTERNAL void duk_new(duk_context *ctx, duk_idx_t nargs) {
- /*
- * There are two [[Construct]] operations in the specification:
- *
- * - E5 Section 13.2.2: for Function objects
- * - E5 Section 15.3.4.5.2: for "bound" Function objects
- *
- * The chain of bound functions is resolved in Section 15.3.4.5.2,
- * with arguments "piling up" until the [[Construct]] internal
- * method is called on the final, actual Function object. Note
- * that the "prototype" property is looked up *only* from the
- * final object, *before* calling the constructor.
- *
- * Currently we follow the bound function chain here to get the
- * "prototype" property value from the final, non-bound function.
- * However, we let duk_handle_call() handle the argument "piling"
- * when the constructor is called. The bound function chain is
- * thus now processed twice.
- *
- * When constructing new Array instances, an unnecessary object is
- * created and discarded now: the standard [[Construct]] creates an
- * object, and calls the Array constructor. The Array constructor
- * returns an Array instance, which is used as the result value for
- * the "new" operation; the object created before the Array constructor
- * call is discarded.
- *
- * This would be easy to fix, e.g. by knowing that the Array constructor
- * will always create a replacement object and skip creating the fallback
- * object in that case.
- *
- * Note: functions called via "new" need to know they are called as a
- * constructor. For instance, built-in constructors behave differently
- * depending on how they are called.
- */
-
- /* XXX: merge this with duk_js_call.c, as this function implements
- * core semantics (or perhaps merge the two files altogether).
- */
-
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *proto;
- duk_hobject *cons;
- duk_hobject *fallback;
- duk_idx_t idx_cons;
- duk_small_uint_t call_flags;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* [... constructor arg1 ... argN] */
-
- idx_cons = duk_require_normalize_index(ctx, -nargs - 1);
-
- DUK_DDD(DUK_DDDPRINT("top=%ld, nargs=%ld, idx_cons=%ld",
- (long) duk_get_top(ctx), (long) nargs, (long) idx_cons));
-
- /* XXX: code duplication */
-
- /*
- * Figure out the final, non-bound constructor, to get "prototype"
- * property.
- */
-
- duk_dup(ctx, idx_cons);
- for (;;) {
- cons = duk_get_hobject(ctx, -1);
- if (cons == NULL || !DUK_HOBJECT_HAS_CONSTRUCTABLE(cons)) {
- /* Checking constructability from anything else than the
- * initial constructor is not strictly necessary, but a
- * nice sanity check.
- */
- goto not_constructable;
- }
- if (!DUK_HOBJECT_HAS_BOUND(cons)) {
- break;
- }
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TARGET); /* -> [... cons target] */
- duk_remove(ctx, -2); /* -> [... target] */
- }
- DUK_ASSERT(cons != NULL && !DUK_HOBJECT_HAS_BOUND(cons));
-
- /* [... constructor arg1 ... argN final_cons] */
-
- /*
- * Create "fallback" object to be used as the object instance,
- * unless the constructor returns a replacement value.
- * Its internal prototype needs to be set based on "prototype"
- * property of the constructor.
- */
-
- duk_push_object(ctx); /* class Object, extensible */
-
- /* [... constructor arg1 ... argN final_cons fallback] */
-
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_PROTOTYPE);
- proto = duk_get_hobject(ctx, -1);
- if (!proto) {
- DUK_DDD(DUK_DDDPRINT("constructor has no 'prototype' property, or value not an object "
- "-> leave standard Object prototype as fallback prototype"));
- } else {
- DUK_DDD(DUK_DDDPRINT("constructor has 'prototype' property with object value "
- "-> set fallback prototype to that value: %!iO", (duk_heaphdr *) proto));
- fallback = duk_get_hobject(ctx, -2);
- DUK_ASSERT(fallback != NULL);
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, fallback, proto);
- }
- duk_pop(ctx);
-
- /* [... constructor arg1 ... argN final_cons fallback] */
-
- /*
- * Manipulate callstack for the call.
- */
-
- duk_dup_top(ctx);
- duk_insert(ctx, idx_cons + 1); /* use fallback as 'this' value */
- duk_insert(ctx, idx_cons); /* also stash it before constructor,
- * in case we need it (as the fallback value)
- */
- duk_pop(ctx); /* pop final_cons */
-
-
- /* [... fallback constructor fallback(this) arg1 ... argN];
- * Note: idx_cons points to first 'fallback', not 'constructor'.
- */
-
- DUK_DDD(DUK_DDDPRINT("before call, idx_cons+1 (constructor) -> %!T, idx_cons+2 (fallback/this) -> %!T, "
- "nargs=%ld, top=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_cons + 1),
- (duk_tval *) duk_get_tval(ctx, idx_cons + 2),
- (long) nargs,
- (long) duk_get_top(ctx)));
-
- /*
- * Call the constructor function (called in "constructor mode").
- */
-
- call_flags = DUK_CALL_FLAG_CONSTRUCTOR_CALL; /* not protected, respect reclimit, is a constructor call */
-
- duk_handle_call_unprotected(thr, /* thread */
- nargs, /* num_stack_args */
- call_flags); /* call_flags */
-
- /* [... fallback retval] */
-
- DUK_DDD(DUK_DDDPRINT("constructor call finished, fallback=%!iT, retval=%!iT",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /*
- * Determine whether to use the constructor return value as the created
- * object instance or not.
- */
-
- if (duk_is_object(ctx, -1)) {
- duk_remove(ctx, -2);
- } else {
- duk_pop(ctx);
- }
-
- /*
- * Augment created errors upon creation (not when they are thrown or
- * rethrown). __FILE__ and __LINE__ are not desirable here; the call
- * stack reflects the caller which is correct.
- */
-
-#ifdef DUK_USE_AUGMENT_ERROR_CREATE
- duk_hthread_sync_currpc(thr);
- duk_err_augment_error_create(thr, thr, NULL, 0, 1 /*noblame_fileline*/);
-#endif
-
- /* [... retval] */
-
- return;
-
- not_constructable:
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONSTRUCTABLE);
-}
-
-DUK_LOCAL duk_ret_t duk__pnew_helper(duk_context *ctx) {
- duk_uint_t nargs;
-
- nargs = duk_to_uint(ctx, -1);
- duk_pop(ctx);
-
- duk_new(ctx, nargs);
- return 1;
-}
-
-DUK_EXTERNAL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs) {
- duk_int_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* For now, just use duk_safe_call() to wrap duk_new(). We can't
- * simply use a protected duk_handle_call() because there's post
- * processing which might throw. It should be possible to ensure
- * the post processing never throws (except in internal errors and
- * out of memory etc which are always allowed) and then remove this
- * wrapper.
- */
-
- duk_push_uint(ctx, nargs);
- rc = duk_safe_call(ctx, duk__pnew_helper, nargs + 2 /*nargs*/, 1 /*nrets*/);
- return rc;
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_constructor_call(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0);
-
- act = duk_hthread_get_current_activation(thr);
- DUK_ASSERT(act != NULL); /* because callstack_top > 0 */
- return ((act->flags & DUK_ACT_FLAG_CONSTRUCT) != 0 ? 1 : 0);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_strict_call(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
-
- /* For user code this could just return 1 (strict) always
- * because all Duktape/C functions are considered strict,
- * and strict is also the default when nothing is running.
- * However, Duktape may call this function internally when
- * the current activation is an Ecmascript function, so
- * this cannot be replaced by a 'return 1' without fixing
- * the internal call sites.
- */
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0);
-
- act = duk_hthread_get_current_activation(thr);
- if (act == NULL) {
- /* Strict by default. */
- return 1;
- }
- return ((act->flags & DUK_ACT_FLAG_STRICT) != 0 ? 1 : 0);
-}
-
-/*
- * Duktape/C function magic
- */
-
-DUK_EXTERNAL duk_int_t duk_get_current_magic(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
- duk_hobject *func;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0);
-
- act = duk_hthread_get_current_activation(thr);
- if (act) {
- func = DUK_ACT_GET_FUNC(act);
- if (!func) {
- duk_tval *tv = &act->tv_func;
- duk_small_uint_t lf_flags;
- lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv);
- return (duk_int_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags);
- }
- DUK_ASSERT(func != NULL);
-
- if (DUK_HOBJECT_IS_NATIVEFUNCTION(func)) {
- duk_hnativefunction *nf = (duk_hnativefunction *) func;
- return (duk_int_t) nf->magic;
- }
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_int_t duk_get_magic(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- if (!DUK_HOBJECT_HAS_NATIVEFUNCTION(h)) {
- goto type_error;
- }
- return (duk_int_t) ((duk_hnativefunction *) h)->magic;
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) {
- duk_small_uint_t lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv);
- return (duk_int_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags);
- }
-
- /* fall through */
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_UNEXPECTED_TYPE);
- return 0;
-}
-
-DUK_EXTERNAL void duk_set_magic(duk_context *ctx, duk_idx_t index, duk_int_t magic) {
- duk_hnativefunction *nf;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- nf = duk_require_hnativefunction(ctx, index);
- DUK_ASSERT(nf != NULL);
- nf->magic = (duk_int16_t) magic;
-}
-#line 1 "duk_api_codec.c"
-/*
- * Encoding and decoding basic formats: hex, base64.
- *
- * These are in-place operations which may allow an optimized implementation.
- *
- * Base-64: https://tools.ietf.org/html/rfc4648#section-4
- */
-
-/* include removed: duk_internal.h */
-
-/* Shared handling for encode/decode argument. Fast path handling for
- * buffer and string values because they're the most common. In particular,
- * avoid creating a temporary string or buffer when possible.
- */
-DUK_LOCAL const duk_uint8_t *duk__prep_codec_arg(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
- DUK_ASSERT(duk_is_valid_index(ctx, index)); /* checked by caller */
- if (duk_is_buffer(ctx, index)) {
- return (const duk_uint8_t *) duk_get_buffer(ctx, index, out_len);
- } else {
- return (const duk_uint8_t *) duk_to_lstring(ctx, index, out_len);
- }
-}
-
-#if defined(DUK_USE_BASE64_FASTPATH)
-DUK_LOCAL void duk__base64_encode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst) {
- duk_uint_t t;
- duk_size_t n_full, n_full3, n_final;
- const duk_uint8_t *src_end_fast;
-
- n_full = srclen / 3; /* full 3-byte -> 4-char conversions */
- n_full3 = n_full * 3;
- n_final = srclen - n_full3;
- DUK_ASSERT_DISABLE(n_final >= 0);
- DUK_ASSERT(n_final <= 2);
-
- src_end_fast = src + n_full3;
- while (DUK_UNLIKELY(src != src_end_fast)) {
- t = (duk_uint_t) (*src++);
- t = (t << 8) + (duk_uint_t) (*src++);
- t = (t << 8) + (duk_uint_t) (*src++);
-
- *dst++ = duk_base64_enctab[t >> 18];
- *dst++ = duk_base64_enctab[(t >> 12) & 0x3f];
- *dst++ = duk_base64_enctab[(t >> 6) & 0x3f];
- *dst++ = duk_base64_enctab[t & 0x3f];
-
-#if 0 /* Tested: not faster on x64 */
- /* aaaaaabb bbbbcccc ccdddddd */
- dst[0] = duk_base64_enctab[(src[0] >> 2) & 0x3f];
- dst[1] = duk_base64_enctab[((src[0] << 4) & 0x30) | ((src[1] >> 4) & 0x0f)];
- dst[2] = duk_base64_enctab[((src[1] << 2) & 0x3f) | ((src[2] >> 6) & 0x03)];
- dst[3] = duk_base64_enctab[src[2] & 0x3f];
- src += 3; dst += 4;
-#endif
- }
-
- switch (n_final) {
- /* case 0: nop */
- case 1: {
- /* XX== */
- t = (duk_uint_t) (*src++);
- *dst++ = duk_base64_enctab[t >> 2]; /* XXXXXX-- */
- *dst++ = duk_base64_enctab[(t << 4) & 0x3f]; /* ------XX */
- *dst++ = DUK_ASC_EQUALS;
- *dst++ = DUK_ASC_EQUALS;
- break;
- }
- case 2: {
- /* XXX= */
- t = (duk_uint_t) (*src++);
- t = (t << 8) + (duk_uint_t) (*src++);
- *dst++ = duk_base64_enctab[t >> 10]; /* XXXXXX-- -------- */
- *dst++ = duk_base64_enctab[(t >> 4) & 0x3f]; /* ------XX XXXX---- */
- *dst++ = duk_base64_enctab[(t << 2) & 0x3f]; /* -------- ----XXXX */
- *dst++ = DUK_ASC_EQUALS;
- break;
- }
- }
-}
-#else /* DUK_USE_BASE64_FASTPATH */
-DUK_LOCAL void duk__base64_encode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst) {
- duk_small_uint_t i, snip;
- duk_uint_t t;
- duk_uint_fast8_t x, y;
- const duk_uint8_t *src_end;
-
- src_end = src + srclen;
-
- while (src < src_end) {
- /* read 3 bytes into 't', padded by zero */
- snip = 4;
- t = 0;
- for (i = 0; i < 3; i++) {
- t = t << 8;
- if (src >= src_end) {
- snip--;
- } else {
- t += (duk_uint_t) (*src++);
- }
- }
-
- /*
- * Missing bytes snip base64 example
- * 0 4 XXXX
- * 1 3 XXX=
- * 2 2 XX==
- */
-
- DUK_ASSERT(snip >= 2 && snip <= 4);
-
- for (i = 0; i < 4; i++) {
- x = (duk_uint_fast8_t) ((t >> 18) & 0x3f);
- t = t << 6;
-
- /* A straightforward 64-byte lookup would be faster
- * and cleaner, but this is shorter.
- */
- if (i >= snip) {
- y = '=';
- } else if (x <= 25) {
- y = x + 'A';
- } else if (x <= 51) {
- y = x - 26 + 'a';
- } else if (x <= 61) {
- y = x - 52 + '0';
- } else if (x == 62) {
- y = '+';
- } else {
- y = '/';
- }
-
- *dst++ = (duk_uint8_t) y;
- }
- }
-}
-#endif /* DUK_USE_BASE64_FASTPATH */
-
-#if defined(DUK_USE_BASE64_FASTPATH)
-DUK_LOCAL duk_bool_t duk__base64_decode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst, duk_uint8_t **out_dst_final) {
- duk_int_t x;
- duk_int_t t;
- duk_small_uint_t n_equal;
- duk_small_uint_t n_chars;
- const duk_uint8_t *src_end;
- const duk_uint8_t *src_end_safe;
-
- src_end = src + srclen;
- src_end_safe = src_end - 4; /* if 'src < src_end_safe', safe to read 4 bytes */
-
- /* Innermost fast path processes 4 valid base-64 characters at a time
- * but bails out on whitespace, padding chars ('=') and invalid chars.
- * Once the slow path segment has been processed, we return to the
- * inner fast path again. This handles e.g. base64 with newlines
- * reasonably well because the majority of a line is in the fast path.
- */
- for (;;) {
- /* Fast path, handle units with just actual encoding characters. */
-
- while (src <= src_end_safe) {
- /* The lookup byte is intentionally sign extended to (at least)
- * 32 bits and then ORed. This ensures that is at least 1 byte
- * is negative, the highest bit of 't' will be set at the end
- * and we don't need to check every byte.
- */
- DUK_DDD(DUK_DDDPRINT("fast loop: src=%p, src_end_safe=%p, src_end=%p",
- (const void *) src, (const void *) src_end_safe, (const void *) src_end));
-
- t = (duk_int_t) duk_base64_dectab[*src++];
- t = (t << 6) | (duk_int_t) duk_base64_dectab[*src++];
- t = (t << 6) | (duk_int_t) duk_base64_dectab[*src++];
- t = (t << 6) | (duk_int_t) duk_base64_dectab[*src++];
-
- if (DUK_UNLIKELY(t < 0)) {
- DUK_DDD(DUK_DDDPRINT("fast loop unit was not clean, process one slow path unit"));
- src -= 4;
- break;
- }
-
- DUK_ASSERT(t <= 0xffffffL);
- DUK_ASSERT((t >> 24) == 0);
- *dst++ = (duk_uint8_t) (t >> 16);
- *dst++ = (duk_uint8_t) ((t >> 8) & 0xff);
- *dst++ = (duk_uint8_t) (t & 0xff);
- }
-
- /* Handle one slow path unit (or finish if we're done). */
-
- n_equal = 0;
- n_chars = 0;
- t = 0;
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("slow loop: src=%p, src_end=%p, n_chars=%ld, n_equal=%ld, t=%ld",
- (const void *) src, (const void *) src_end, (long) n_chars, (long) n_equal, (long) t));
-
- if (DUK_UNLIKELY(src >= src_end)) {
- goto done; /* two level break */
- }
-
- x = duk_base64_dectab[*src++];
- if (DUK_UNLIKELY(x < 0)) {
- if (x == -2) {
- continue; /* allowed ascii whitespace */
- } else if (x == -3) {
- n_equal++;
- t <<= 6;
- } else {
- DUK_ASSERT(x == -1);
- goto error;
- }
- } else {
- DUK_ASSERT(x >= 0 && x <= 63);
- if (n_equal > 0) {
- /* Don't allow actual chars after equal sign. */
- goto error;
- }
- t = (t << 6) + x;
- }
-
- if (DUK_UNLIKELY(n_chars == 3)) {
- /* Emit 3 bytes and backtrack if there was padding. There's
- * always space for the whole 3 bytes so no check needed.
- */
- DUK_ASSERT(t <= 0xffffffL);
- DUK_ASSERT((t >> 24) == 0);
- *dst++ = (duk_uint8_t) (t >> 16);
- *dst++ = (duk_uint8_t) ((t >> 8) & 0xff);
- *dst++ = (duk_uint8_t) (t & 0xff);
-
- if (DUK_UNLIKELY(n_equal > 0)) {
- DUK_ASSERT(n_equal <= 4);
-
- /* There may be whitespace between the equal signs. */
- if (n_equal == 1) {
- /* XXX= */
- dst -= 1;
- } else if (n_equal == 2) {
- /* XX== */
- dst -= 2;
- } else {
- goto error; /* invalid padding */
- }
-
- /* Continue parsing after padding, allows concatenated,
- * padded base64.
- */
- }
- break; /* back to fast loop */
- } else {
- n_chars++;
- }
- }
- }
- done:
- DUK_DDD(DUK_DDDPRINT("done; src=%p, src_end=%p, n_chars=%ld",
- (const void *) src, (const void *) src_end, (long) n_chars));
-
- DUK_ASSERT(src == src_end);
-
- if (n_chars != 0) {
- /* Here we'd have the option of decoding unpadded base64
- * (e.g. "xxxxyy" instead of "xxxxyy==". Currently not
- * accepted.
- */
- goto error;
- }
-
- *out_dst_final = dst;
- return 1;
-
- error:
- return 0;
-}
-#else /* DUK_USE_BASE64_FASTPATH */
-DUK_LOCAL duk_bool_t duk__base64_decode_helper(const duk_uint8_t *src, duk_size_t srclen, duk_uint8_t *dst, duk_uint8_t **out_dst_final) {
- duk_uint_t t;
- duk_uint_fast8_t x, y;
- duk_small_uint_t group_idx;
- duk_small_uint_t n_equal;
- const duk_uint8_t *src_end;
-
- src_end = src + srclen;
- t = 0;
- group_idx = 0;
- n_equal = 0;
-
- while (src < src_end) {
- x = *src++;
-
- if (x >= 'A' && x <= 'Z') {
- y = x - 'A' + 0;
- } else if (x >= 'a' && x <= 'z') {
- y = x - 'a' + 26;
- } else if (x >= '0' && x <= '9') {
- y = x - '0' + 52;
- } else if (x == '+') {
- y = 62;
- } else if (x == '/') {
- y = 63;
- } else if (x == '=') {
- /* We don't check the zero padding bytes here right now
- * (that they're actually zero). This seems to be common
- * behavior for base-64 decoders.
- */
-
- n_equal++;
- t <<= 6; /* shift in zeroes */
- goto skip_add;
- } else if (x == 0x09 || x == 0x0a || x == 0x0d || x == 0x20) {
- /* allow basic ASCII whitespace */
- continue;
- } else {
- goto error;
- }
-
- if (n_equal > 0) {
- /* Don't allow mixed padding and actual chars. */
- goto error;
- }
- t = (t << 6) + y;
- skip_add:
-
- if (group_idx == 3) {
- /* output 3 bytes from 't' */
- *dst++ = (duk_uint8_t) ((t >> 16) & 0xff);
- *dst++ = (duk_uint8_t) ((t >> 8) & 0xff);
- *dst++ = (duk_uint8_t) (t & 0xff);
-
- if (DUK_UNLIKELY(n_equal > 0)) {
- /* Backtrack. */
- DUK_ASSERT(n_equal <= 4);
- if (n_equal == 1) {
- dst -= 1;
- } else if (n_equal == 2) {
- dst -= 2;
- } else {
- goto error; /* invalid padding */
- }
-
- /* Here we can choose either to end parsing and ignore
- * whatever follows, or to continue parsing in case
- * multiple (possibly padded) base64 strings have been
- * concatenated. Currently, keep on parsing.
- */
- n_equal = 0;
- }
-
- t = 0;
- group_idx = 0;
- } else {
- group_idx++;
- }
- }
-
- if (group_idx != 0) {
- /* Here we'd have the option of decoding unpadded base64
- * (e.g. "xxxxyy" instead of "xxxxyy==". Currently not
- * accepted.
- */
- goto error;
- }
-
- *out_dst_final = dst;
- return 1;
-
- error:
- return 0;
-}
-#endif /* DUK_USE_BASE64_FASTPATH */
-
-DUK_EXTERNAL const char *duk_base64_encode(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- const duk_uint8_t *src;
- duk_size_t srclen;
- duk_size_t dstlen;
- duk_uint8_t *dst;
- const char *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* XXX: optimize for string inputs: no need to coerce to a buffer
- * which makes a copy of the input.
- */
-
- index = duk_require_normalize_index(ctx, index);
- src = duk__prep_codec_arg(ctx, index, &srclen);
- /* Note: for srclen=0, src may be NULL */
-
- /* Computation must not wrap; this limit works for 32-bit size_t:
- * >>> srclen = 3221225469
- * >>> '%x' % ((srclen + 2) / 3 * 4)
- * 'fffffffc'
- */
- if (srclen > 3221225469UL) {
- goto type_error;
- }
- dstlen = (srclen + 2) / 3 * 4;
- dst = (duk_uint8_t *) duk_push_fixed_buffer(ctx, dstlen);
-
- duk__base64_encode_helper((const duk_uint8_t *) src, srclen, dst);
-
- ret = duk_to_string(ctx, -1);
- duk_replace(ctx, index);
- return ret;
-
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_ENCODE_FAILED);
- return NULL; /* never here */
-}
-
-DUK_EXTERNAL void duk_base64_decode(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- const duk_uint8_t *src;
- duk_size_t srclen;
- duk_size_t dstlen;
- duk_uint8_t *dst;
- duk_uint8_t *dst_final;
- duk_bool_t retval;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* XXX: optimize for buffer inputs: no need to coerce to a string
- * which causes an unnecessary interning.
- */
-
- index = duk_require_normalize_index(ctx, index);
- src = duk__prep_codec_arg(ctx, index, &srclen);
-
- /* Computation must not wrap, only srclen + 3 is at risk of
- * wrapping because after that the number gets smaller.
- * This limit works for 32-bit size_t:
- * 0x100000000 - 3 - 1 = 4294967292
- */
- if (srclen > 4294967292UL) {
- goto type_error;
- }
- dstlen = (srclen + 3) / 4 * 3; /* upper limit, assuming no whitespace etc */
- dst = (duk_uint8_t *) duk_push_dynamic_buffer(ctx, dstlen);
- /* Note: for dstlen=0, dst may be NULL */
-
- retval = duk__base64_decode_helper((const duk_uint8_t *) src, srclen, dst, &dst_final);
- if (!retval) {
- goto type_error;
- }
-
- /* XXX: convert to fixed buffer? */
- (void) duk_resize_buffer(ctx, -1, (duk_size_t) (dst_final - dst));
- duk_replace(ctx, index);
- return;
-
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
-}
-
-DUK_EXTERNAL const char *duk_hex_encode(duk_context *ctx, duk_idx_t index) {
- const duk_uint8_t *inp;
- duk_size_t len;
- duk_size_t i;
- duk_uint8_t *buf;
- const char *ret;
-#if defined(DUK_USE_HEX_FASTPATH)
- duk_size_t len_safe;
- duk_uint16_t *p16;
-#endif
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
- inp = duk__prep_codec_arg(ctx, index, &len);
- DUK_ASSERT(inp != NULL || len == 0);
-
- /* Fixed buffer, no zeroing because we'll fill all the data. */
- buf = (duk_uint8_t *) duk_push_buffer_raw(ctx, len * 2, DUK_BUF_FLAG_NOZERO /*flags*/);
- DUK_ASSERT(buf != NULL);
-
-#if defined(DUK_USE_HEX_FASTPATH)
- DUK_ASSERT((((duk_size_t) buf) & 0x01U) == 0); /* pointer is aligned, guaranteed for fixed buffer */
- p16 = (duk_uint16_t *) (void *) buf;
- len_safe = len & ~0x03U;
- for (i = 0; i < len_safe; i += 4) {
- p16[0] = duk_hex_enctab[inp[i]];
- p16[1] = duk_hex_enctab[inp[i + 1]];
- p16[2] = duk_hex_enctab[inp[i + 2]];
- p16[3] = duk_hex_enctab[inp[i + 3]];
- p16 += 4;
- }
- for (; i < len; i++) {
- *p16++ = duk_hex_enctab[inp[i]];
- }
-#else /* DUK_USE_HEX_FASTPATH */
- for (i = 0; i < len; i++) {
- duk_small_uint_t t;
- t = (duk_small_uint_t) inp[i];
- buf[i*2 + 0] = duk_lc_digits[t >> 4];
- buf[i*2 + 1] = duk_lc_digits[t & 0x0f];
- }
-#endif /* DUK_USE_HEX_FASTPATH */
-
- /* XXX: Using a string return value forces a string intern which is
- * not always necessary. As a rough performance measure, hex encode
- * time for tests/perf/test-hex-encode.js dropped from ~35s to ~15s
- * without string coercion. Change to returning a buffer and let the
- * caller coerce to string if necessary?
- */
-
- ret = duk_to_string(ctx, -1);
- duk_replace(ctx, index);
- return ret;
-}
-
-DUK_EXTERNAL void duk_hex_decode(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- const duk_uint8_t *inp;
- duk_size_t len;
- duk_size_t i;
- duk_int_t t;
- duk_uint8_t *buf;
-#if defined(DUK_USE_HEX_FASTPATH)
- duk_int_t chk;
- duk_uint8_t *p;
- duk_size_t len_safe;
-#endif
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
- inp = duk__prep_codec_arg(ctx, index, &len);
- DUK_ASSERT(inp != NULL || len == 0);
-
- if (len & 0x01) {
- goto type_error;
- }
-
- /* Fixed buffer, no zeroing because we'll fill all the data. */
- buf = (duk_uint8_t *) duk_push_buffer_raw(ctx, len / 2, DUK_BUF_FLAG_NOZERO /*flags*/);
- DUK_ASSERT(buf != NULL);
-
-#if defined(DUK_USE_HEX_FASTPATH)
- p = buf;
- len_safe = len & ~0x07U;
- for (i = 0; i < len_safe; i += 8) {
- t = ((duk_int_t) duk_hex_dectab_shift4[inp[i]]) |
- ((duk_int_t) duk_hex_dectab[inp[i + 1]]);
- chk = t;
- p[0] = (duk_uint8_t) t;
- t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 2]]) |
- ((duk_int_t) duk_hex_dectab[inp[i + 3]]);
- chk |= t;
- p[1] = (duk_uint8_t) t;
- t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 4]]) |
- ((duk_int_t) duk_hex_dectab[inp[i + 5]]);
- chk |= t;
- p[2] = (duk_uint8_t) t;
- t = ((duk_int_t) duk_hex_dectab_shift4[inp[i + 6]]) |
- ((duk_int_t) duk_hex_dectab[inp[i + 7]]);
- chk |= t;
- p[3] = (duk_uint8_t) t;
- p += 4;
-
- /* Check if any lookup above had a negative result. */
- if (DUK_UNLIKELY(chk < 0)) {
- goto type_error;
- }
- }
- for (; i < len; i += 2) {
- t = (((duk_int_t) duk_hex_dectab[inp[i]]) << 4) |
- ((duk_int_t) duk_hex_dectab[inp[i + 1]]);
- if (DUK_UNLIKELY(t < 0)) {
- goto type_error;
- }
- *p++ = (duk_uint8_t) t;
- }
-#else /* DUK_USE_HEX_FASTPATH */
- for (i = 0; i < len; i += 2) {
- /* For invalid characters the value -1 gets extended to
- * at least 16 bits. If either nybble is invalid, the
- * resulting 't' will be < 0.
- */
- t = (((duk_int_t) duk_hex_dectab[inp[i]]) << 4) |
- ((duk_int_t) duk_hex_dectab[inp[i + 1]]);
- if (DUK_UNLIKELY(t < 0)) {
- goto type_error;
- }
- buf[i >> 1] = (duk_uint8_t) t;
- }
-#endif /* DUK_USE_HEX_FASTPATH */
-
- duk_replace(ctx, index);
- return;
-
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_DECODE_FAILED);
-}
-
-DUK_EXTERNAL const char *duk_json_encode(duk_context *ctx, duk_idx_t index) {
-#ifdef DUK_USE_ASSERTIONS
- duk_idx_t top_at_entry;
-#endif
- const char *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-#ifdef DUK_USE_ASSERTIONS
- top_at_entry = duk_get_top(ctx);
-#endif
-
- index = duk_require_normalize_index(ctx, index);
- duk_bi_json_stringify_helper(ctx,
- index /*idx_value*/,
- DUK_INVALID_INDEX /*idx_replacer*/,
- DUK_INVALID_INDEX /*idx_space*/,
- 0 /*flags*/);
- DUK_ASSERT(duk_is_string(ctx, -1));
- duk_replace(ctx, index);
- ret = duk_get_string(ctx, index);
-
- DUK_ASSERT(duk_get_top(ctx) == top_at_entry);
-
- return ret;
-}
-
-DUK_EXTERNAL void duk_json_decode(duk_context *ctx, duk_idx_t index) {
-#ifdef DUK_USE_ASSERTIONS
- duk_idx_t top_at_entry;
-#endif
-
- DUK_ASSERT_CTX_VALID(ctx);
-#ifdef DUK_USE_ASSERTIONS
- top_at_entry = duk_get_top(ctx);
-#endif
-
- index = duk_require_normalize_index(ctx, index);
- duk_bi_json_parse_helper(ctx,
- index /*idx_value*/,
- DUK_INVALID_INDEX /*idx_reviver*/,
- 0 /*flags*/);
- duk_replace(ctx, index);
-
- DUK_ASSERT(duk_get_top(ctx) == top_at_entry);
-}
-#line 1 "duk_api_compile.c"
-/*
- * Compilation and evaluation
- */
-
-/* include removed: duk_internal.h */
-
-typedef struct duk__compile_raw_args duk__compile_raw_args;
-struct duk__compile_raw_args {
- duk_size_t src_length; /* should be first on 64-bit platforms */
- const duk_uint8_t *src_buffer;
- duk_uint_t flags;
-};
-
-/* Eval is just a wrapper now. */
-DUK_EXTERNAL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags) {
- duk_uint_t comp_flags;
- duk_int_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: strictness is *not* inherited from the current Duktape/C.
- * This would be confusing because the current strictness state
- * depends on whether we're running inside a Duktape/C activation
- * (= strict mode) or outside of any activation (= non-strict mode).
- * See tests/api/test-eval-strictness.c for more discussion.
- */
-
- /* [ ... source? filename? ] (depends on flags) */
-
- comp_flags = flags;
- comp_flags |= DUK_COMPILE_EVAL;
- rc = duk_compile_raw(ctx, src_buffer, src_length, comp_flags); /* may be safe, or non-safe depending on flags */
-
- /* [ ... closure/error ] */
-
- if (rc != DUK_EXEC_SUCCESS) {
- rc = DUK_EXEC_ERROR;
- goto got_rc;
- }
-
- duk_push_global_object(ctx); /* explicit 'this' binding, see GH-164 */
-
- if (flags & DUK_COMPILE_SAFE) {
- rc = duk_pcall_method(ctx, 0);
- } else {
- duk_call_method(ctx, 0);
- rc = DUK_EXEC_SUCCESS;
- }
-
- /* [ ... result/error ] */
-
- got_rc:
- if (flags & DUK_COMPILE_NORESULT) {
- duk_pop(ctx);
- }
-
- return rc;
-}
-
-/* Helper which can be called both directly and with duk_safe_call(). */
-DUK_LOCAL duk_ret_t duk__do_compile(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk__compile_raw_args *comp_args;
- duk_uint_t flags;
- duk_small_uint_t comp_flags;
- duk_hcompiledfunction *h_templ;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: strictness is not inherited from the current Duktape/C
- * context. Otherwise it would not be possible to compile
- * non-strict code inside a Duktape/C activation (which is
- * always strict now). See tests/api/test-eval-strictness.c
- * for discussion.
- */
-
- /* [ ... source? filename? &comp_args ] (depends on flags) */
-
- comp_args = (duk__compile_raw_args *) duk_require_pointer(ctx, -1);
- flags = comp_args->flags;
- duk_pop(ctx);
-
- /* [ ... source? filename? ] */
-
- if (flags & DUK_COMPILE_NOFILENAME) {
- /* Automatic filename: 'eval' or 'input'. */
- duk_push_hstring_stridx(ctx, (flags & DUK_COMPILE_EVAL) ? DUK_STRIDX_EVAL : DUK_STRIDX_INPUT);
- }
-
- /* [ ... source? filename ] */
-
- if (!comp_args->src_buffer) {
- duk_hstring *h_sourcecode;
-
- h_sourcecode = duk_get_hstring(ctx, -2);
- if ((flags & DUK_COMPILE_NOSOURCE) || /* args incorrect */
- (h_sourcecode == NULL)) { /* e.g. duk_push_string_file_raw() pushed undefined */
- /* XXX: when this error is caused by a nonexistent
- * file given to duk_peval_file() or similar, the
- * error message is not the best possible.
- */
- DUK_ERROR_API(thr, DUK_STR_NO_SOURCECODE);
- }
- DUK_ASSERT(h_sourcecode != NULL);
- comp_args->src_buffer = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode);
- comp_args->src_length = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode);
- }
- DUK_ASSERT(comp_args->src_buffer != NULL);
-
- /* XXX: unnecessary translation of flags */
- comp_flags = 0;
- if (flags & DUK_COMPILE_EVAL) {
- comp_flags |= DUK_JS_COMPILE_FLAG_EVAL;
- }
- if (flags & DUK_COMPILE_FUNCTION) {
- comp_flags |= DUK_JS_COMPILE_FLAG_EVAL |
- DUK_JS_COMPILE_FLAG_FUNCEXPR;
- }
- if (flags & DUK_COMPILE_STRICT) {
- comp_flags |= DUK_JS_COMPILE_FLAG_STRICT;
- }
-
- /* [ ... source? filename ] */
-
- duk_js_compile(thr, comp_args->src_buffer, comp_args->src_length, comp_flags);
-
- /* [ ... source? func_template ] */
-
- if (flags & DUK_COMPILE_NOSOURCE) {
- ;
- } else {
- duk_remove(ctx, -2);
- }
-
- /* [ ... func_template ] */
-
- h_templ = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_templ != NULL);
- duk_js_push_closure(thr,
- h_templ,
- thr->builtins[DUK_BIDX_GLOBAL_ENV],
- thr->builtins[DUK_BIDX_GLOBAL_ENV],
- 1 /*add_auto_proto*/);
- duk_remove(ctx, -2); /* -> [ ... closure ] */
-
- /* [ ... closure ] */
-
- return 1;
-}
-
-DUK_EXTERNAL duk_int_t duk_compile_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags) {
- duk__compile_raw_args comp_args_alloc;
- duk__compile_raw_args *comp_args = &comp_args_alloc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if ((flags & DUK_COMPILE_STRLEN) && (src_buffer != NULL)) {
- /* String length is computed here to avoid multiple evaluation
- * of a macro argument in the calling side.
- */
- src_length = DUK_STRLEN(src_buffer);
- }
-
- comp_args->src_buffer = (const duk_uint8_t *) src_buffer;
- comp_args->src_length = src_length;
- comp_args->flags = flags;
- duk_push_pointer(ctx, (void *) comp_args);
-
- /* [ ... source? filename? &comp_args ] (depends on flags) */
-
- if (flags & DUK_COMPILE_SAFE) {
- duk_int_t rc;
- duk_int_t nargs;
- duk_int_t nrets = 1;
-
- /* Arguments can be: [ source? filename? &comp_args] so that
- * nargs is 1 to 3. Call site encodes the correct nargs count
- * directly into flags.
- */
- nargs = flags & 0x07;
- DUK_ASSERT(nargs == (1 +
- ((flags & DUK_COMPILE_NOSOURCE) ? 0 : 1) +
- ((flags & DUK_COMPILE_NOFILENAME) ? 0 : 1)));
- rc = duk_safe_call(ctx, duk__do_compile, nargs, nrets);
-
- /* [ ... closure ] */
- return rc;
- }
-
- (void) duk__do_compile(ctx);
-
- /* [ ... closure ] */
- return DUK_EXEC_SUCCESS;
-}
-#line 1 "duk_api_debug.c"
-/*
- * Debugging related API calls
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL void duk_push_context_dump(duk_context *ctx) {
- duk_idx_t idx;
- duk_idx_t top;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* We don't duk_require_stack() here now, but rely on the caller having
- * enough space.
- */
-
- top = duk_get_top(ctx);
- duk_push_array(ctx);
- for (idx = 0; idx < top; idx++) {
- duk_dup(ctx, idx);
- duk_put_prop_index(ctx, -2, idx);
- }
-
- /* XXX: conversion errors should not propagate outwards.
- * Perhaps values need to be coerced individually?
- */
- duk_bi_json_stringify_helper(ctx,
- duk_get_top_index(ctx), /*idx_value*/
- DUK_INVALID_INDEX, /*idx_replacer*/
- DUK_INVALID_INDEX, /*idx_space*/
- DUK_JSON_FLAG_EXT_CUSTOM |
- DUK_JSON_FLAG_ASCII_ONLY |
- DUK_JSON_FLAG_AVOID_KEY_QUOTES /*flags*/);
-
- duk_push_sprintf(ctx, "ctx: top=%ld, stack=%s", (long) top, (const char *) duk_safe_to_string(ctx, -1));
- duk_replace(ctx, -3); /* [ ... arr jsonx(arr) res ] -> [ ... res jsonx(arr) ] */
- duk_pop(ctx);
- DUK_ASSERT(duk_is_string(ctx, -1));
-}
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-
-DUK_EXTERNAL void duk_debugger_attach_custom(duk_context *ctx,
- duk_debug_read_function read_cb,
- duk_debug_write_function write_cb,
- duk_debug_peek_function peek_cb,
- duk_debug_read_flush_function read_flush_cb,
- duk_debug_write_flush_function write_flush_cb,
- duk_debug_request_function request_cb,
- duk_debug_detached_function detached_cb,
- void *udata) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_heap *heap;
- const char *str;
- duk_size_t len;
-
- /* XXX: should there be an error or an automatic detach if
- * already attached?
- */
-
- DUK_D(DUK_DPRINT("application called duk_debugger_attach()"));
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(read_cb != NULL);
- DUK_ASSERT(write_cb != NULL);
- /* Other callbacks are optional. */
-
- heap = thr->heap;
- heap->dbg_read_cb = read_cb;
- heap->dbg_write_cb = write_cb;
- heap->dbg_peek_cb = peek_cb;
- heap->dbg_read_flush_cb = read_flush_cb;
- heap->dbg_write_flush_cb = write_flush_cb;
- heap->dbg_request_cb = request_cb;
- heap->dbg_detached_cb = detached_cb;
- heap->dbg_udata = udata;
- heap->dbg_have_next_byte = 0;
-
- /* Start in paused state. */
- heap->dbg_processing = 0;
- heap->dbg_paused = 1;
- heap->dbg_state_dirty = 1;
- heap->dbg_force_restart = 0;
- heap->dbg_step_type = 0;
- heap->dbg_step_thread = NULL;
- heap->dbg_step_csindex = 0;
- heap->dbg_step_startline = 0;
- heap->dbg_exec_counter = 0;
- heap->dbg_last_counter = 0;
- heap->dbg_last_time = 0.0;
-
- /* Send version identification and flush right afterwards. Note that
- * we must write raw, unframed bytes here.
- */
- duk_push_sprintf(ctx, "%ld %ld %s %s\n",
- (long) DUK_DEBUG_PROTOCOL_VERSION,
- (long) DUK_VERSION,
- (const char *) DUK_GIT_DESCRIBE,
- (const char *) DUK_USE_TARGET_INFO);
- str = duk_get_lstring(ctx, -1, &len);
- DUK_ASSERT(str != NULL);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) str, len);
- duk_debug_write_flush(thr);
- duk_pop(ctx);
-}
-
-DUK_EXTERNAL void duk_debugger_detach(duk_context *ctx) {
- duk_hthread *thr;
-
- DUK_D(DUK_DPRINT("application called duk_debugger_detach()"));
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- /* Can be called multiple times with no harm. */
- duk_debug_do_detach(thr->heap);
-}
-
-DUK_EXTERNAL void duk_debugger_cooperate(duk_context *ctx) {
- duk_hthread *thr;
- duk_bool_t processed_messages;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- if (!DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- return;
- }
- if (thr->callstack_top > 0 || thr->heap->dbg_processing) {
- /* Calling duk_debugger_cooperate() while Duktape is being
- * called into is not supported. This is not a 100% check
- * but prevents any damage in most cases.
- */
- return;
- }
-
- processed_messages = duk_debug_process_messages(thr, 1 /*no_block*/);
- DUK_UNREF(processed_messages);
-}
-
-DUK_EXTERNAL duk_bool_t duk_debugger_notify(duk_context *ctx, duk_idx_t nvalues) {
- duk_hthread *thr;
- duk_idx_t top;
- duk_idx_t idx;
- duk_bool_t ret = 0;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- DUK_D(DUK_DPRINT("application called duk_debugger_notify() with nvalues=%ld", (long) nvalues));
-
- top = duk_get_top(ctx);
- if (top < nvalues) {
- DUK_ERROR_API(thr, "not enough stack values for notify");
- return ret; /* unreachable */
- }
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- duk_debug_write_notify(thr, DUK_DBG_CMD_APPNOTIFY);
- for (idx = top - nvalues; idx < top; idx++) {
- duk_tval *tv = DUK_GET_TVAL_POSIDX(ctx, idx);
- duk_debug_write_tval(thr, tv);
- }
- duk_debug_write_eom(thr);
-
- /* Return non-zero (true) if we have a good reason to believe
- * the notify was delivered; if we're still attached at least
- * a transport error was not indicated by the transport write
- * callback. This is not a 100% guarantee of course.
- */
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- ret = 1;
- }
- }
- duk_pop_n(ctx, nvalues);
- return ret;
-}
-
-DUK_EXTERNAL void duk_debugger_pause(duk_context *ctx) {
- duk_hthread *thr;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- DUK_D(DUK_DPRINT("application called duk_debugger_pause()"));
-
- /* Treat like a debugger statement: ignore when not attached. */
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- DUK_HEAP_SET_PAUSED(thr->heap);
-
- /* Pause on the next opcode executed. This is always safe to do even
- * inside the debugger message loop: the interrupt counter will be reset
- * to its proper value when the message loop exits.
- */
- thr->interrupt_init = 1;
- thr->interrupt_counter = 0;
- }
-}
-
-#else /* DUK_USE_DEBUGGER_SUPPORT */
-
-DUK_EXTERNAL void duk_debugger_attach_custom(duk_context *ctx,
- duk_debug_read_function read_cb,
- duk_debug_write_function write_cb,
- duk_debug_peek_function peek_cb,
- duk_debug_read_flush_function read_flush_cb,
- duk_debug_write_flush_function write_flush_cb,
- duk_debug_request_function request_cb,
- duk_debug_detached_function detached_cb,
- void *udata) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(read_cb);
- DUK_UNREF(write_cb);
- DUK_UNREF(peek_cb);
- DUK_UNREF(read_flush_cb);
- DUK_UNREF(write_flush_cb);
- DUK_UNREF(request_cb);
- DUK_UNREF(detached_cb);
- DUK_UNREF(udata);
- DUK_ERROR_API((duk_hthread *) ctx, "no debugger support");
-}
-
-DUK_EXTERNAL void duk_debugger_detach(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ERROR_API((duk_hthread *) ctx, "no debugger support");
-}
-
-DUK_EXTERNAL void duk_debugger_cooperate(duk_context *ctx) {
- /* nop */
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(ctx);
-}
-
-DUK_EXTERNAL duk_bool_t duk_debugger_notify(duk_context *ctx, duk_idx_t nvalues) {
- duk_idx_t top;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- top = duk_get_top(ctx);
- if (top < nvalues) {
- DUK_ERROR_API((duk_hthread *) ctx, "not enough stack values for notify");
- return 0; /* unreachable */
- }
-
- /* No debugger support, just pop values. */
- duk_pop_n(ctx, nvalues);
- return 0;
-}
-
-DUK_EXTERNAL void duk_debugger_pause(duk_context *ctx) {
- /* Treat like debugger statement: nop */
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(ctx);
-}
-
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-#line 1 "duk_api_heap.c"
-/*
- * Heap creation and destruction
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL
-duk_context *duk_create_heap(duk_alloc_function alloc_func,
- duk_realloc_function realloc_func,
- duk_free_function free_func,
- void *heap_udata,
- duk_fatal_function fatal_handler) {
- duk_heap *heap = NULL;
- duk_context *ctx;
-
- /* Assume that either all memory funcs are NULL or non-NULL, mixed
- * cases will now be unsafe.
- */
-
- /* XXX: just assert non-NULL values here and make caller arguments
- * do the defaulting to the default implementations (smaller code)?
- */
-
- if (!alloc_func) {
- DUK_ASSERT(realloc_func == NULL);
- DUK_ASSERT(free_func == NULL);
-#if defined(DUK_USE_PROVIDE_DEFAULT_ALLOC_FUNCTIONS)
- alloc_func = duk_default_alloc_function;
- realloc_func = duk_default_realloc_function;
- free_func = duk_default_free_function;
-#else
- DUK_D(DUK_DPRINT("no allocation functions given and no default providers"));
- return NULL;
-#endif
- } else {
- DUK_ASSERT(realloc_func != NULL);
- DUK_ASSERT(free_func != NULL);
- }
-
- if (!fatal_handler) {
- fatal_handler = duk_default_fatal_handler;
- }
-
- DUK_ASSERT(alloc_func != NULL);
- DUK_ASSERT(realloc_func != NULL);
- DUK_ASSERT(free_func != NULL);
- DUK_ASSERT(fatal_handler != NULL);
-
- heap = duk_heap_alloc(alloc_func, realloc_func, free_func, heap_udata, fatal_handler);
- if (!heap) {
- return NULL;
- }
- ctx = (duk_context *) heap->heap_thread;
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(((duk_hthread *) ctx)->heap != NULL);
- return ctx;
-}
-
-DUK_EXTERNAL void duk_destroy_heap(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_heap *heap;
-
- if (!ctx) {
- return;
- }
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- duk_heap_free(heap);
-}
-
-/* XXX: better place for this */
-DUK_EXTERNAL void duk_set_global_object(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h_glob;
- duk_hobject *h_prev_glob;
- duk_hobject *h_env;
- duk_hobject *h_prev_env;
-
- DUK_D(DUK_DPRINT("replace global object with: %!T", duk_get_tval(ctx, -1)));
-
- h_glob = duk_require_hobject(ctx, -1);
- DUK_ASSERT(h_glob != NULL);
-
- /*
- * Replace global object.
- */
-
- h_prev_glob = thr->builtins[DUK_BIDX_GLOBAL];
- DUK_UNREF(h_prev_glob);
- thr->builtins[DUK_BIDX_GLOBAL] = h_glob;
- DUK_HOBJECT_INCREF(thr, h_glob);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_glob); /* side effects, in theory (referenced by global env) */
-
- /*
- * Replace lexical environment for global scope
- *
- * Create a new object environment for the global lexical scope.
- * We can't just reset the _Target property of the current one,
- * because the lexical scope is shared by other threads with the
- * same (initial) built-ins.
- */
-
- (void) duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV),
- -1); /* no prototype, updated below */
-
- duk_dup(ctx, -2);
- duk_dup(ctx, -3);
-
- /* [ ... new_glob new_env new_glob new_glob ] */
-
- duk_xdef_prop_stridx(thr, -3, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx(thr, -2, DUK_STRIDX_INT_THIS, DUK_PROPDESC_FLAGS_NONE);
-
- /* [ ... new_glob new_env ] */
-
- h_env = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_env != NULL);
-
- h_prev_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- thr->builtins[DUK_BIDX_GLOBAL_ENV] = h_env;
- DUK_HOBJECT_INCREF(thr, h_env);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, h_prev_env); /* side effects */
- DUK_UNREF(h_env); /* without refcounts */
- DUK_UNREF(h_prev_env);
-
- /* [ ... new_glob new_env ] */
-
- duk_pop_2(ctx);
-
- /* [ ... ] */
-}
-#line 1 "duk_api_logging.c"
-/*
- * Logging
- *
- * Current logging primitive is a sprintf-style log which is convenient
- * for most C code. Another useful primitive would be to log N arguments
- * from value stack (like the Ecmascript binding does).
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL void duk_log_va(duk_context *ctx, duk_int_t level, const char *fmt, va_list ap) {
- /* stridx_logfunc[] must be static to allow initializer with old compilers like BCC */
- static const duk_uint16_t stridx_logfunc[6] = {
- DUK_STRIDX_LC_TRACE, DUK_STRIDX_LC_DEBUG, DUK_STRIDX_LC_INFO,
- DUK_STRIDX_LC_WARN, DUK_STRIDX_LC_ERROR, DUK_STRIDX_LC_FATAL
- };
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (level < 0) {
- level = 0;
- } else if (level > (int) (sizeof(stridx_logfunc) / sizeof(duk_uint16_t)) - 1) {
- level = (int) (sizeof(stridx_logfunc) / sizeof(duk_uint16_t)) - 1;
- }
-
- duk_push_hobject_bidx(ctx, DUK_BIDX_LOGGER_CONSTRUCTOR);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_CLOG);
- duk_get_prop_stridx(ctx, -1, stridx_logfunc[level]);
- duk_dup(ctx, -2);
-
- /* [ ... Logger clog logfunc clog ] */
-
- duk_push_vsprintf(ctx, fmt, ap);
-
- /* [ ... Logger clog logfunc clog(=this) msg ] */
-
- duk_call_method(ctx, 1 /*nargs*/);
-
- /* [ ... Logger clog res ] */
-
- duk_pop_3(ctx);
-}
-
-DUK_EXTERNAL void duk_log(duk_context *ctx, duk_int_t level, const char *fmt, ...) {
- va_list ap;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- va_start(ap, fmt);
- duk_log_va(ctx, level, fmt, ap);
- va_end(ap);
-}
-#line 1 "duk_api_memory.c"
-/*
- * Memory calls.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL void *duk_alloc_raw(duk_context *ctx, duk_size_t size) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- return DUK_ALLOC_RAW(thr->heap, size);
-}
-
-DUK_EXTERNAL void duk_free_raw(duk_context *ctx, void *ptr) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_FREE_RAW(thr->heap, ptr);
-}
-
-DUK_EXTERNAL void *duk_realloc_raw(duk_context *ctx, void *ptr, duk_size_t size) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- return DUK_REALLOC_RAW(thr->heap, ptr, size);
-}
-
-DUK_EXTERNAL void *duk_alloc(duk_context *ctx, duk_size_t size) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- return DUK_ALLOC(thr->heap, size);
-}
-
-DUK_EXTERNAL void duk_free(duk_context *ctx, void *ptr) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_FREE(thr->heap, ptr);
-}
-
-DUK_EXTERNAL void *duk_realloc(duk_context *ctx, void *ptr, duk_size_t size) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /*
- * Note: since this is an exposed API call, there should be
- * no way a mark-and-sweep could have a side effect on the
- * memory allocation behind 'ptr'; the pointer should never
- * be something that Duktape wants to change.
- *
- * Thus, no need to use DUK_REALLOC_INDIRECT (and we don't
- * have the storage location here anyway).
- */
-
- return DUK_REALLOC(thr->heap, ptr, size);
-}
-
-DUK_EXTERNAL void duk_get_memory_functions(duk_context *ctx, duk_memory_functions *out_funcs) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_heap *heap;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(out_funcs != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- heap = thr->heap;
- out_funcs->alloc_func = heap->alloc_func;
- out_funcs->realloc_func = heap->realloc_func;
- out_funcs->free_func = heap->free_func;
- out_funcs->udata = heap->heap_udata;
-}
-
-DUK_EXTERNAL void duk_gc(duk_context *ctx, duk_uint_t flags) {
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_heap *heap;
-
- DUK_UNREF(flags);
-
- /* NULL accepted */
- if (!ctx) {
- return;
- }
- DUK_ASSERT_CTX_VALID(ctx);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- DUK_D(DUK_DPRINT("mark-and-sweep requested by application"));
- duk_heap_mark_and_sweep(heap, 0);
-#else
- DUK_D(DUK_DPRINT("mark-and-sweep requested by application but mark-and-sweep not enabled, ignoring"));
- DUK_UNREF(ctx);
- DUK_UNREF(flags);
-#endif
-}
-#line 1 "duk_api_object.c"
-/*
- * Object handling: property access and other support functions.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Property handling
- *
- * The API exposes only the most common property handling functions.
- * The caller can invoke Ecmascript built-ins for full control (e.g.
- * defineProperty, getOwnPropertyDescriptor).
- */
-
-DUK_EXTERNAL duk_bool_t duk_get_prop(duk_context *ctx, duk_idx_t obj_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_bool_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: copying tv_obj and tv_key to locals to shield against a valstack
- * resize is not necessary for a property get right now.
- */
-
- tv_obj = duk_require_tval(ctx, obj_index);
- tv_key = duk_require_tval(ctx, -1);
-
- rc = duk_hobject_getprop(thr, tv_obj, tv_key);
- DUK_ASSERT(rc == 0 || rc == 1);
- /* a value is left on stack regardless of rc */
-
- duk_remove(ctx, -2); /* remove key */
- return rc; /* 1 if property found, 0 otherwise */
-}
-
-DUK_EXTERNAL duk_bool_t duk_get_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(key != NULL);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_string(ctx, key);
- return duk_get_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_get_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_uarridx(ctx, arr_index);
- return duk_get_prop(ctx, obj_index);
-}
-
-DUK_INTERNAL duk_bool_t duk_get_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- DUK_UNREF(thr);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
- return duk_get_prop(ctx, obj_index);
-}
-
-DUK_INTERNAL duk_bool_t duk_get_prop_stridx_boolean(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_bool_t *out_has_prop) {
- duk_bool_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
-
- rc = duk_get_prop_stridx(ctx, obj_index, stridx);
- if (out_has_prop) {
- *out_has_prop = rc;
- }
- rc = duk_to_boolean(ctx, -1);
- DUK_ASSERT(rc == 0 || rc == 1);
- duk_pop(ctx);
- return rc;
-}
-
-DUK_EXTERNAL duk_bool_t duk_put_prop(duk_context *ctx, duk_idx_t obj_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_tval *tv_val;
- duk_small_int_t throw_flag;
- duk_bool_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: copying tv_obj and tv_key to locals to shield against a valstack
- * resize is not necessary for a property put right now (putprop protects
- * against it internally).
- */
-
- tv_obj = duk_require_tval(ctx, obj_index);
- tv_key = duk_require_tval(ctx, -2);
- tv_val = duk_require_tval(ctx, -1);
- throw_flag = duk_is_strict_call(ctx);
-
- rc = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, throw_flag);
- DUK_ASSERT(rc == 0 || rc == 1);
-
- duk_pop_2(ctx); /* remove key and value */
- return rc; /* 1 if property found, 0 otherwise */
-}
-
-DUK_EXTERNAL duk_bool_t duk_put_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(key != NULL);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_string(ctx, key);
- duk_swap_top(ctx, -2); /* [val key] -> [key val] */
- return duk_put_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_put_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_uarridx(ctx, arr_index);
- duk_swap_top(ctx, -2); /* [val key] -> [key val] */
- return duk_put_prop(ctx, obj_index);
-}
-
-DUK_INTERNAL duk_bool_t duk_put_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- DUK_UNREF(thr);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
- duk_swap_top(ctx, -2); /* [val key] -> [key val] */
- return duk_put_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_del_prop(duk_context *ctx, duk_idx_t obj_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_small_int_t throw_flag;
- duk_bool_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: copying tv_obj and tv_key to locals to shield against a valstack
- * resize is not necessary for a property delete right now.
- */
-
- tv_obj = duk_require_tval(ctx, obj_index);
- tv_key = duk_require_tval(ctx, -1);
- throw_flag = duk_is_strict_call(ctx);
-
- rc = duk_hobject_delprop(thr, tv_obj, tv_key, throw_flag);
- DUK_ASSERT(rc == 0 || rc == 1);
-
- duk_pop(ctx); /* remove key */
- return rc;
-}
-
-DUK_EXTERNAL duk_bool_t duk_del_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(key != NULL);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_string(ctx, key);
- return duk_del_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_del_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_uarridx(ctx, arr_index);
- return duk_del_prop(ctx, obj_index);
-}
-
-DUK_INTERNAL duk_bool_t duk_del_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- DUK_UNREF(thr);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
- return duk_del_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_has_prop(duk_context *ctx, duk_idx_t obj_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_bool_t rc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: copying tv_obj and tv_key to locals to shield against a valstack
- * resize is not necessary for a property existence check right now.
- */
-
- tv_obj = duk_require_tval(ctx, obj_index);
- tv_key = duk_require_tval(ctx, -1);
-
- rc = duk_hobject_hasprop(thr, tv_obj, tv_key);
- DUK_ASSERT(rc == 0 || rc == 1);
-
- duk_pop(ctx); /* remove key */
- return rc; /* 1 if property found, 0 otherwise */
-}
-
-DUK_EXTERNAL duk_bool_t duk_has_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(key != NULL);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_string(ctx, key);
- return duk_has_prop(ctx, obj_index);
-}
-
-DUK_EXTERNAL duk_bool_t duk_has_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_uarridx(ctx, arr_index);
- return duk_has_prop(ctx, obj_index);
-}
-
-DUK_INTERNAL duk_bool_t duk_has_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- DUK_UNREF(thr);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
- return duk_has_prop(ctx, obj_index);
-}
-
-/* Define own property without inheritance looks and such. This differs from
- * [[DefineOwnProperty]] because special behaviors (like Array 'length') are
- * not invoked by this method. The caller must be careful to invoke any such
- * behaviors if necessary.
- */
-DUK_INTERNAL void duk_xdef_prop(duk_context *ctx, duk_idx_t obj_index, duk_small_uint_t desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hstring *key;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_require_hobject(ctx, obj_index);
- DUK_ASSERT(obj != NULL);
- key = duk_to_hstring(ctx, -2);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(duk_require_tval(ctx, -1) != NULL);
-
- duk_hobject_define_property_internal(thr, obj, key, desc_flags);
-
- duk_pop(ctx); /* pop key */
-}
-
-DUK_INTERNAL void duk_xdef_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index, duk_small_uint_t desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_require_hobject(ctx, obj_index);
- DUK_ASSERT(obj != NULL);
-
- duk_hobject_define_property_internal_arridx(thr, obj, arr_index, desc_flags);
- /* value popped by call */
-}
-
-DUK_INTERNAL void duk_xdef_prop_stridx(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_uint_t desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hstring *key;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
-
- obj = duk_require_hobject(ctx, obj_index);
- DUK_ASSERT(obj != NULL);
- key = DUK_HTHREAD_GET_STRING(thr, stridx);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(duk_require_tval(ctx, -1) != NULL);
-
- duk_hobject_define_property_internal(thr, obj, key, desc_flags);
- /* value popped by call */
-}
-
-DUK_INTERNAL void duk_xdef_prop_stridx_builtin(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_int_t builtin_idx, duk_small_uint_t desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hstring *key;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(stridx >= 0);
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- DUK_ASSERT_DISABLE(builtin_idx >= 0);
- DUK_ASSERT(builtin_idx < DUK_NUM_BUILTINS);
-
- obj = duk_require_hobject(ctx, obj_index);
- DUK_ASSERT(obj != NULL);
- key = DUK_HTHREAD_GET_STRING(thr, stridx);
- DUK_ASSERT(key != NULL);
-
- duk_push_hobject(ctx, thr->builtins[builtin_idx]);
- duk_hobject_define_property_internal(thr, obj, key, desc_flags);
- /* value popped by call */
-}
-
-/* This is a rare property helper; it sets the global thrower (E5 Section 13.2.3)
- * setter/getter into an object property. This is needed by the 'arguments'
- * object creation code, function instance creation code, and Function.prototype.bind().
- */
-
-DUK_INTERNAL void duk_xdef_prop_stridx_thrower(duk_context *ctx, duk_idx_t obj_index, duk_small_int_t stridx, duk_small_uint_t desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj = duk_require_hobject(ctx, obj_index);
- duk_hobject *thrower = thr->builtins[DUK_BIDX_TYPE_ERROR_THROWER];
- duk_hobject_define_accessor_internal(thr, obj, DUK_HTHREAD_GET_STRING(thr, stridx), thrower, thrower, desc_flags);
-}
-
-/* Object.defineProperty() equivalent C binding. */
-DUK_EXTERNAL void duk_def_prop(duk_context *ctx, duk_idx_t obj_index, duk_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t idx_base;
- duk_hobject *obj;
- duk_hstring *key;
- duk_idx_t idx_value;
- duk_hobject *get;
- duk_hobject *set;
- duk_uint_t is_data_desc;
- duk_uint_t is_acc_desc;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_require_hobject(ctx, obj_index);
-
- is_data_desc = flags & (DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_HAVE_WRITABLE);
- is_acc_desc = flags & (DUK_DEFPROP_HAVE_GETTER | DUK_DEFPROP_HAVE_SETTER);
- if (is_data_desc && is_acc_desc) {
- /* "Have" flags must not be conflicting so that they would
- * apply to both a plain property and an accessor at the same
- * time.
- */
- goto fail_invalid_desc;
- }
-
- idx_base = duk_get_top_index(ctx);
- if (flags & DUK_DEFPROP_HAVE_SETTER) {
- duk_require_type_mask(ctx, idx_base, DUK_TYPE_MASK_UNDEFINED |
- DUK_TYPE_MASK_OBJECT |
- DUK_TYPE_MASK_LIGHTFUNC);
- set = duk_get_hobject_or_lfunc_coerce(ctx, idx_base);
- if (set != NULL && !DUK_HOBJECT_IS_CALLABLE(set)) {
- goto fail_not_callable;
- }
- idx_base--;
- } else {
- set = NULL;
- }
- if (flags & DUK_DEFPROP_HAVE_GETTER) {
- duk_require_type_mask(ctx, idx_base, DUK_TYPE_MASK_UNDEFINED |
- DUK_TYPE_MASK_OBJECT |
- DUK_TYPE_MASK_LIGHTFUNC);
- get = duk_get_hobject_or_lfunc_coerce(ctx, idx_base);
- if (get != NULL && !DUK_HOBJECT_IS_CALLABLE(get)) {
- goto fail_not_callable;
- }
- idx_base--;
- } else {
- get = NULL;
- }
- if (flags & DUK_DEFPROP_HAVE_VALUE) {
- idx_value = idx_base;
- idx_base--;
- } else {
- idx_value = (duk_idx_t) -1;
- }
- key = duk_require_hstring(ctx, idx_base);
-
- duk_require_valid_index(ctx, idx_base);
-
- duk_hobject_define_property_helper(ctx,
- flags /*defprop_flags*/,
- obj,
- key,
- idx_value,
- get,
- set);
-
- /* Clean up stack */
-
- duk_set_top(ctx, idx_base);
-
- /* [ ... obj ... ] */
-
- return;
-
- fail_invalid_desc:
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_DESCRIPTOR);
- return;
-
- fail_not_callable:
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE);
- return;
-}
-
-/*
- * Object related
- *
- * Note: seal() and freeze() are accessible through Ecmascript bindings,
- * and are not exposed through the API.
- */
-
-DUK_EXTERNAL void duk_compact(duk_context *ctx, duk_idx_t obj_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_get_hobject(ctx, obj_index);
- if (obj) {
- /* Note: this may fail, caller should protect the call if necessary */
- duk_hobject_compact_props(thr, obj);
- }
-}
-
-/* XXX: the duk_hobject_enum.c stack APIs should be reworked */
-
-DUK_EXTERNAL void duk_enum(duk_context *ctx, duk_idx_t obj_index, duk_uint_t enum_flags) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_dup(ctx, obj_index);
- duk_require_hobject_or_lfunc_coerce(ctx, -1);
- duk_hobject_enumerator_create(ctx, enum_flags); /* [target] -> [enum] */
-}
-
-DUK_EXTERNAL duk_bool_t duk_next(duk_context *ctx, duk_idx_t enum_index, duk_bool_t get_value) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_require_hobject(ctx, enum_index);
- duk_dup(ctx, enum_index);
- return duk_hobject_enumerator_next(ctx, get_value);
-}
-
-/*
- * Helpers for writing multiple properties
- */
-
-DUK_EXTERNAL void duk_put_function_list(duk_context *ctx, duk_idx_t obj_index, const duk_function_list_entry *funcs) {
- const duk_function_list_entry *ent = funcs;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- if (ent != NULL) {
- while (ent->key != NULL) {
- duk_push_c_function(ctx, ent->value, ent->nargs);
- duk_put_prop_string(ctx, obj_index, ent->key);
- ent++;
- }
- }
-}
-
-DUK_EXTERNAL void duk_put_number_list(duk_context *ctx, duk_idx_t obj_index, const duk_number_list_entry *numbers) {
- const duk_number_list_entry *ent = numbers;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj_index = duk_require_normalize_index(ctx, obj_index);
- if (ent != NULL) {
- while (ent->key != NULL) {
- duk_push_number(ctx, ent->value);
- duk_put_prop_string(ctx, obj_index, ent->key);
- ent++;
- }
- }
-}
-
-/*
- * Shortcut for accessing global object properties
- */
-
-DUK_EXTERNAL duk_bool_t duk_get_global_string(duk_context *ctx, const char *key) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_bool_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL);
-
- /* XXX: direct implementation */
-
- duk_push_hobject(ctx, thr->builtins[DUK_BIDX_GLOBAL]);
- ret = duk_get_prop_string(ctx, -1, key);
- duk_remove(ctx, -2);
- return ret;
-}
-
-DUK_EXTERNAL duk_bool_t duk_put_global_string(duk_context *ctx, const char *key) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_bool_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL);
-
- /* XXX: direct implementation */
-
- duk_push_hobject(ctx, thr->builtins[DUK_BIDX_GLOBAL]);
- duk_insert(ctx, -2);
- ret = duk_put_prop_string(ctx, -2, key); /* [ ... global val ] -> [ ... global ] */
- duk_pop(ctx);
- return ret;
-}
-
-/*
- * Object prototype
- */
-
-DUK_EXTERNAL void duk_get_prototype(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hobject *proto;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- obj = duk_require_hobject(ctx, index);
- DUK_ASSERT(obj != NULL);
-
- /* XXX: shared helper for duk_push_hobject_or_undefined()? */
- proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, obj);
- if (proto) {
- duk_push_hobject(ctx, proto);
- } else {
- duk_push_undefined(ctx);
- }
-}
-
-DUK_EXTERNAL void duk_set_prototype(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hobject *proto;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_require_hobject(ctx, index);
- DUK_ASSERT(obj != NULL);
- duk_require_type_mask(ctx, -1, DUK_TYPE_MASK_UNDEFINED |
- DUK_TYPE_MASK_OBJECT);
- proto = duk_get_hobject(ctx, -1);
- /* proto can also be NULL here (allowed explicitly) */
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE); /* XXX: "read only object"? */
- return;
- }
-#endif
-
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, obj, proto);
-
- duk_pop(ctx);
-}
-
-/*
- * Object finalizer
- */
-
-/* XXX: these could be implemented as macros calling an internal function
- * directly.
- * XXX: same issue as with Duktape.fin: there's no way to delete the property
- * now (just set it to undefined).
- */
-DUK_EXTERNAL void duk_get_finalizer(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_get_prop_stridx(ctx, index, DUK_STRIDX_INT_FINALIZER);
-}
-
-DUK_EXTERNAL void duk_set_finalizer(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_put_prop_stridx(ctx, index, DUK_STRIDX_INT_FINALIZER);
-}
-#line 1 "duk_api_stack.c"
-/*
- * API calls related to general value stack manipulation: resizing the value
- * stack, pushing and popping values, type checking and reading values,
- * coercing values, etc.
- *
- * Also contains internal functions (such as duk_get_tval()), defined
- * in duk_api_internal.h, with semantics similar to the public API.
- */
-
-/* XXX: repetition of stack pre-checks -> helper or macro or inline */
-/* XXX: shared api error strings, and perhaps even throw code for rare cases? */
-
-/* include removed: duk_internal.h */
-
-/*
- * Forward declarations
- */
-
-DUK_LOCAL_DECL duk_idx_t duk__push_c_function_raw(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_uint_t flags);
-
-/*
- * Global state for working around missing variadic macros
- */
-
-#ifndef DUK_USE_VARIADIC_MACROS
-DUK_EXTERNAL const char *duk_api_global_filename = NULL;
-DUK_EXTERNAL duk_int_t duk_api_global_line = 0;
-#endif
-
-/*
- * Misc helpers
- */
-
-/* Check that there's room to push one value. */
-#if defined(DUK_USE_VALSTACK_UNSAFE)
-/* Faster but value stack overruns are memory unsafe. */
-#define DUK__CHECK_SPACE() do { \
- DUK_ASSERT(!(thr->valstack_top >= thr->valstack_end)); \
- } while (0)
-#else
-#define DUK__CHECK_SPACE() do { \
- if (DUK_UNLIKELY(thr->valstack_top >= thr->valstack_end)) { \
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK); \
- } \
- } while (0)
-#endif
-
-DUK_LOCAL_DECL duk_heaphdr *duk__get_tagged_heaphdr_raw(duk_context *ctx, duk_idx_t index, duk_uint_t tag);
-
-DUK_LOCAL duk_int_t duk__api_coerce_d2i(duk_context *ctx, duk_idx_t index, duk_bool_t require) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_small_int_t c;
- duk_double_t d;
-
- thr = (duk_hthread *) ctx;
-
- tv = duk_get_tval(ctx, index);
- if (tv == NULL) {
- goto error_notnumber;
- }
-
- /*
- * Special cases like NaN and +/- Infinity are handled explicitly
- * because a plain C coercion from double to int handles these cases
- * in undesirable ways. For instance, NaN may coerce to INT_MIN
- * (not zero), and INT_MAX + 1 may coerce to INT_MIN (not INT_MAX).
- *
- * This double-to-int coercion differs from ToInteger() because it
- * has a finite range (ToInteger() allows e.g. +/- Infinity). It
- * also differs from ToInt32() because the INT_MIN/INT_MAX clamping
- * depends on the size of the int type on the platform. In particular,
- * on platforms with a 64-bit int type, the full range is allowed.
- */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv)) {
- duk_int64_t t = DUK_TVAL_GET_FASTINT(tv);
-#if (DUK_INT_MAX <= 0x7fffffffL)
- /* Clamping only necessary for 32-bit ints. */
- if (t < DUK_INT_MIN) {
- t = DUK_INT_MIN;
- } else if (t > DUK_INT_MAX) {
- t = DUK_INT_MAX;
- }
-#endif
- return (duk_int_t) t;
- }
-#endif
-
- if (DUK_TVAL_IS_NUMBER(tv)) {
- d = DUK_TVAL_GET_NUMBER(tv);
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- if (c == DUK_FP_NAN) {
- return 0;
- } else if (d < (duk_double_t) DUK_INT_MIN) {
- /* covers -Infinity */
- return DUK_INT_MIN;
- } else if (d > (duk_double_t) DUK_INT_MAX) {
- /* covers +Infinity */
- return DUK_INT_MAX;
- } else {
- /* coerce towards zero */
- return (duk_int_t) d;
- }
- }
-
- error_notnumber:
-
- if (require) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "number", DUK_STR_NOT_NUMBER);
- /* not reachable */
- }
- return 0;
-}
-
-DUK_LOCAL duk_uint_t duk__api_coerce_d2ui(duk_context *ctx, duk_idx_t index, duk_bool_t require) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_small_int_t c;
- duk_double_t d;
-
- /* Same as above but for unsigned int range. */
-
- thr = (duk_hthread *) ctx;
-
- tv = duk_get_tval(ctx, index);
- if (tv == NULL) {
- goto error_notnumber;
- }
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv)) {
- duk_int64_t t = DUK_TVAL_GET_FASTINT(tv);
- if (t < 0) {
- t = 0;
- }
-#if (DUK_UINT_MAX <= 0xffffffffUL)
- /* Clamping only necessary for 32-bit ints. */
- else if (t > DUK_UINT_MAX) {
- t = DUK_UINT_MAX;
- }
-#endif
- return (duk_uint_t) t;
- }
-#endif
-
- if (DUK_TVAL_IS_NUMBER(tv)) {
- d = DUK_TVAL_GET_NUMBER(tv);
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- if (c == DUK_FP_NAN) {
- return 0;
- } else if (d < 0.0) {
- /* covers -Infinity */
- return (duk_uint_t) 0;
- } else if (d > (duk_double_t) DUK_UINT_MAX) {
- /* covers +Infinity */
- return (duk_uint_t) DUK_UINT_MAX;
- } else {
- /* coerce towards zero */
- return (duk_uint_t) d;
- }
- }
-
- error_notnumber:
-
- if (require) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "number", DUK_STR_NOT_NUMBER);
- /* not reachable */
- }
- return 0;
-}
-
-/*
- * Stack index validation/normalization and getting a stack duk_tval ptr.
- *
- * These are called by many API entrypoints so the implementations must be
- * fast and "inlined".
- *
- * There's some repetition because of this; keep the functions in sync.
- */
-
-DUK_EXTERNAL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uidx_t vs_size;
- duk_uidx_t uindex;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- /* Care must be taken to avoid pointer wrapping in the index
- * validation. For instance, on a 32-bit platform with 8-byte
- * duk_tval the index 0x20000000UL would wrap the memory space
- * once.
- */
-
- /* Assume value stack sizes (in elements) fits into duk_idx_t. */
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
-
- if (index < 0) {
- uindex = vs_size + (duk_uidx_t) index;
- } else {
- /* since index non-negative */
- DUK_ASSERT(index != DUK_INVALID_INDEX);
- uindex = (duk_uidx_t) index;
- }
-
- /* DUK_INVALID_INDEX won't be accepted as a valid index. */
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
-
- if (DUK_LIKELY(uindex < vs_size)) {
- return (duk_idx_t) uindex;
- }
- return DUK_INVALID_INDEX;
-}
-
-DUK_EXTERNAL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uidx_t vs_size;
- duk_uidx_t uindex;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
-
- if (index < 0) {
- uindex = vs_size + (duk_uidx_t) index;
- } else {
- DUK_ASSERT(index != DUK_INVALID_INDEX);
- uindex = (duk_uidx_t) index;
- }
-
- /* DUK_INVALID_INDEX won't be accepted as a valid index. */
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
-
- if (DUK_LIKELY(uindex < vs_size)) {
- return (duk_idx_t) uindex;
- }
- DUK_ERROR_API_INDEX(thr, index);
- return 0; /* unreachable */
-}
-
-DUK_INTERNAL duk_tval *duk_get_tval(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uidx_t vs_size;
- duk_uidx_t uindex;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
-
- if (index < 0) {
- uindex = vs_size + (duk_uidx_t) index;
- } else {
- DUK_ASSERT(index != DUK_INVALID_INDEX);
- uindex = (duk_uidx_t) index;
- }
-
- /* DUK_INVALID_INDEX won't be accepted as a valid index. */
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
-
- if (DUK_LIKELY(uindex < vs_size)) {
- return thr->valstack_bottom + uindex;
- }
- return NULL;
-}
-
-DUK_INTERNAL duk_tval *duk_require_tval(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uidx_t vs_size;
- duk_uidx_t uindex;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
- DUK_ASSERT_DISABLE(vs_size >= 0); /* unsigned */
-
- /* Use unsigned arithmetic to optimize comparison. */
- if (index < 0) {
- uindex = vs_size + (duk_uidx_t) index;
- } else {
- DUK_ASSERT(index != DUK_INVALID_INDEX);
- uindex = (duk_uidx_t) index;
- }
-
- /* DUK_INVALID_INDEX won't be accepted as a valid index. */
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
-
- if (DUK_LIKELY(uindex < vs_size)) {
- return thr->valstack_bottom + uindex;
- }
- DUK_ERROR_API_INDEX(thr, index);
- return NULL;
-}
-
-/* Non-critical. */
-DUK_EXTERNAL duk_bool_t duk_is_valid_index(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- return (duk_normalize_index(ctx, index) >= 0);
-}
-
-/* Non-critical. */
-DUK_EXTERNAL void duk_require_valid_index(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- if (duk_normalize_index(ctx, index) < 0) {
- DUK_ERROR_API_INDEX(thr, index);
- return; /* unreachable */
- }
-}
-
-/*
- * Value stack top handling
- */
-
-DUK_EXTERNAL duk_idx_t duk_get_top(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- return (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
-}
-
-/* Set stack top within currently allocated range, but don't reallocate.
- * This is performance critical especially for call handling, so whenever
- * changing, profile and look at generated code.
- */
-DUK_EXTERNAL void duk_set_top(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uidx_t vs_size;
- duk_uidx_t vs_limit;
- duk_uidx_t uindex;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(DUK_INVALID_INDEX < 0);
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_bottom);
- vs_size = (duk_uidx_t) (thr->valstack_top - thr->valstack_bottom);
- vs_limit = (duk_uidx_t) (thr->valstack_end - thr->valstack_bottom);
-
- if (index < 0) {
- /* Negative indices are always within allocated stack but
- * must not go below zero index.
- */
- uindex = vs_size + (duk_uidx_t) index;
- } else {
- /* Positive index can be higher than valstack top but must
- * not go above allocated stack (equality is OK).
- */
- uindex = (duk_uidx_t) index;
- }
-
- /* DUK_INVALID_INDEX won't be accepted as a valid index. */
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_size);
- DUK_ASSERT(vs_size + (duk_uidx_t) DUK_INVALID_INDEX >= vs_limit);
-
-#if defined(DUK_USE_VALSTACK_UNSAFE)
- DUK_ASSERT(uindex <= vs_limit);
- DUK_UNREF(vs_limit);
-#else
- if (DUK_UNLIKELY(uindex > vs_limit)) {
- DUK_ERROR_API_INDEX(thr, index);
- return; /* unreachable */
- }
-#endif
- DUK_ASSERT(uindex <= vs_limit);
-
- /* Handle change in value stack top. Respect value stack
- * initialization policy: 'undefined' above top. Note that
- * DECREF may cause a side effect that reallocates valstack,
- * so must relookup after DECREF.
- */
-
- if (uindex >= vs_size) {
- /* Stack size increases or stays the same. */
-#if defined(DUK_USE_ASSERTIONS)
- duk_uidx_t count;
-
- count = uindex - vs_size;
- while (count != 0) {
- count--;
- tv = thr->valstack_top + count;
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv));
- }
-#endif
- thr->valstack_top = thr->valstack_bottom + uindex;
- } else {
- /* Stack size decreases. */
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk_uidx_t count;
-
- count = vs_size - uindex;
- DUK_ASSERT(count > 0);
- while (count > 0) {
- count--;
- tv = --thr->valstack_top; /* tv -> value just before prev top value; must relookup */
- DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
- }
-#else /* DUK_USE_REFERENCE_COUNTING */
- duk_uidx_t count;
- duk_tval *tv_end;
-
- count = vs_size - uindex;
- tv = thr->valstack_top;
- tv_end = tv - count;
- DUK_ASSERT(tv > tv_end);
- do {
- tv--;
- DUK_TVAL_SET_UNDEFINED(tv);
- } while (tv != tv_end);
- thr->valstack_top = tv_end;
-#endif /* DUK_USE_REFERENCE_COUNTING */
- }
-}
-
-DUK_EXTERNAL duk_idx_t duk_get_top_index(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = ((duk_idx_t) (thr->valstack_top - thr->valstack_bottom)) - 1;
- if (DUK_UNLIKELY(ret < 0)) {
- /* Return invalid index; if caller uses this without checking
- * in another API call, the index won't map to a valid stack
- * entry.
- */
- return DUK_INVALID_INDEX;
- }
- return ret;
-}
-
-DUK_EXTERNAL duk_idx_t duk_require_top_index(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = ((duk_idx_t) (thr->valstack_top - thr->valstack_bottom)) - 1;
- if (DUK_UNLIKELY(ret < 0)) {
- DUK_ERROR_API_INDEX(thr, -1);
- return 0; /* unreachable */
- }
- return ret;
-}
-
-/*
- * Value stack resizing.
- *
- * This resizing happens above the current "top": the value stack can be
- * grown or shrunk, but the "top" is not affected. The value stack cannot
- * be resized to a size below the current "top".
- *
- * The low level reallocation primitive must carefully recompute all value
- * stack pointers, and must also work if ALL pointers are NULL. The resize
- * is quite tricky because the valstack realloc may cause a mark-and-sweep,
- * which may run finalizers. Running finalizers may resize the valstack
- * recursively (the same value stack we're working on). So, after realloc
- * returns, we know that the valstack "top" should still be the same (there
- * should not be live values above the "top"), but its underlying size and
- * pointer may have changed.
- */
-
-/* XXX: perhaps refactor this to allow caller to specify some parameters, or
- * at least a 'compact' flag which skips any spare or round-up .. useful for
- * emergency gc.
- */
-
-DUK_LOCAL duk_bool_t duk__resize_valstack(duk_context *ctx, duk_size_t new_size) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_ptrdiff_t old_bottom_offset;
- duk_ptrdiff_t old_top_offset;
- duk_ptrdiff_t old_end_offset_post;
-#ifdef DUK_USE_DEBUG
- duk_ptrdiff_t old_end_offset_pre;
- duk_tval *old_valstack_pre;
- duk_tval *old_valstack_post;
-#endif
- duk_tval *new_valstack;
- duk_size_t new_alloc_size;
- duk_tval *p;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
- DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) <= new_size); /* can't resize below 'top' */
- DUK_ASSERT(new_size <= thr->valstack_max); /* valstack limit caller has check, prevents wrapping */
- DUK_ASSERT(new_size <= DUK_SIZE_MAX / sizeof(duk_tval)); /* specific assert for wrapping */
-
- /* get pointer offsets for tweaking below */
- old_bottom_offset = (((duk_uint8_t *) thr->valstack_bottom) - ((duk_uint8_t *) thr->valstack));
- old_top_offset = (((duk_uint8_t *) thr->valstack_top) - ((duk_uint8_t *) thr->valstack));
-#ifdef DUK_USE_DEBUG
- old_end_offset_pre = (((duk_uint8_t *) thr->valstack_end) - ((duk_uint8_t *) thr->valstack)); /* not very useful, used for debugging */
- old_valstack_pre = thr->valstack;
-#endif
-
- /* Allocate a new valstack.
- *
- * Note: cannot use a plain DUK_REALLOC() because a mark-and-sweep may
- * invalidate the original thr->valstack base pointer inside the realloc
- * process. See doc/memory-management.rst.
- */
-
- new_alloc_size = sizeof(duk_tval) * new_size;
- new_valstack = (duk_tval *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_valstack_ptr, (void *) thr, new_alloc_size);
- if (!new_valstack) {
- /* Because new_size != 0, if condition doesn't need to be
- * (new_valstack != NULL || new_size == 0).
- */
- DUK_ASSERT(new_size != 0);
- DUK_D(DUK_DPRINT("failed to resize valstack to %lu entries (%lu bytes)",
- (unsigned long) new_size, (unsigned long) new_alloc_size));
- return 0;
- }
-
- /* Note: the realloc may have triggered a mark-and-sweep which may
- * have resized our valstack internally. However, the mark-and-sweep
- * MUST NOT leave the stack bottom/top in a different state. Particular
- * assumptions and facts:
- *
- * - The thr->valstack pointer may be different after realloc,
- * and the offset between thr->valstack_end <-> thr->valstack
- * may have changed.
- * - The offset between thr->valstack_bottom <-> thr->valstack
- * and thr->valstack_top <-> thr->valstack MUST NOT have changed,
- * because mark-and-sweep must adhere to a strict stack policy.
- * In other words, logical bottom and top MUST NOT have changed.
- * - All values above the top are unreachable but are initialized
- * to UNDEFINED, up to the post-realloc valstack_end.
- * - 'old_end_offset' must be computed after realloc to be correct.
- */
-
- DUK_ASSERT((((duk_uint8_t *) thr->valstack_bottom) - ((duk_uint8_t *) thr->valstack)) == old_bottom_offset);
- DUK_ASSERT((((duk_uint8_t *) thr->valstack_top) - ((duk_uint8_t *) thr->valstack)) == old_top_offset);
-
- /* success, fixup pointers */
- old_end_offset_post = (((duk_uint8_t *) thr->valstack_end) - ((duk_uint8_t *) thr->valstack)); /* must be computed after realloc */
-#ifdef DUK_USE_DEBUG
- old_valstack_post = thr->valstack;
-#endif
- thr->valstack = new_valstack;
- thr->valstack_end = new_valstack + new_size;
-#if !defined(DUK_USE_PREFER_SIZE)
- thr->valstack_size = new_size;
-#endif
- thr->valstack_bottom = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_bottom_offset);
- thr->valstack_top = (duk_tval *) (void *) ((duk_uint8_t *) new_valstack + old_top_offset);
-
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
- /* useful for debugging */
-#ifdef DUK_USE_DEBUG
- if (old_end_offset_pre != old_end_offset_post) {
- DUK_D(DUK_DPRINT("valstack was resized during valstack_resize(), probably by mark-and-sweep; "
- "end offset changed: %lu -> %lu",
- (unsigned long) old_end_offset_pre,
- (unsigned long) old_end_offset_post));
- }
- if (old_valstack_pre != old_valstack_post) {
- DUK_D(DUK_DPRINT("valstack pointer changed during valstack_resize(), probably by mark-and-sweep: %p -> %p",
- (void *) old_valstack_pre,
- (void *) old_valstack_post));
- }
-#endif
-
- DUK_DD(DUK_DDPRINT("resized valstack to %lu elements (%lu bytes), bottom=%ld, top=%ld, "
- "new pointers: start=%p end=%p bottom=%p top=%p",
- (unsigned long) new_size, (unsigned long) new_alloc_size,
- (long) (thr->valstack_bottom - thr->valstack),
- (long) (thr->valstack_top - thr->valstack),
- (void *) thr->valstack, (void *) thr->valstack_end,
- (void *) thr->valstack_bottom, (void *) thr->valstack_top));
-
- /* Init newly allocated slots (only). */
- p = (duk_tval *) (void *) ((duk_uint8_t *) thr->valstack + old_end_offset_post);
- while (p < thr->valstack_end) {
- /* Never executed if new size is smaller. */
- DUK_TVAL_SET_UNDEFINED(p);
- p++;
- }
-
- /* Assert for value stack initialization policy. */
-#if defined(DUK_USE_ASSERTIONS)
- p = thr->valstack_top;
- while (p < thr->valstack_end) {
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(p));
- p++;
- }
-#endif
-
- return 1;
-}
-
-DUK_INTERNAL
-duk_bool_t duk_valstack_resize_raw(duk_context *ctx,
- duk_size_t min_new_size,
- duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_size_t old_size;
- duk_size_t new_size;
- duk_bool_t is_shrink = 0;
- duk_small_uint_t shrink_flag = (flags & DUK_VSRESIZE_FLAG_SHRINK);
- duk_small_uint_t compact_flag = (flags & DUK_VSRESIZE_FLAG_COMPACT);
- duk_small_uint_t throw_flag = (flags & DUK_VSRESIZE_FLAG_THROW);
-
- DUK_DDD(DUK_DDDPRINT("check valstack resize: min_new_size=%lu, curr_size=%ld, curr_top=%ld, "
- "curr_bottom=%ld, shrink=%d, compact=%d, throw=%d",
- (unsigned long) min_new_size,
- (long) (thr->valstack_end - thr->valstack),
- (long) (thr->valstack_top - thr->valstack),
- (long) (thr->valstack_bottom - thr->valstack),
- (int) shrink_flag, (int) compact_flag, (int) throw_flag));
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
-#if defined(DUK_USE_PREFER_SIZE)
- old_size = (duk_size_t) (thr->valstack_end - thr->valstack);
-#else
- DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size);
- old_size = thr->valstack_size;
-#endif
-
- if (min_new_size <= old_size) {
- is_shrink = 1;
- if (!shrink_flag ||
- old_size - min_new_size < DUK_VALSTACK_SHRINK_THRESHOLD) {
- DUK_DDD(DUK_DDDPRINT("no need to grow or shrink valstack"));
- return 1;
- }
- }
-
- new_size = min_new_size;
- if (!compact_flag) {
- if (is_shrink) {
- /* shrink case; leave some spare */
- new_size += DUK_VALSTACK_SHRINK_SPARE;
- }
-
- /* round up roughly to next 'grow step' */
- new_size = (new_size / DUK_VALSTACK_GROW_STEP + 1) * DUK_VALSTACK_GROW_STEP;
- }
-
- DUK_DD(DUK_DDPRINT("want to %s valstack: %lu -> %lu elements (min_new_size %lu)",
- (const char *) (new_size > old_size ? "grow" : "shrink"),
- (unsigned long) old_size, (unsigned long) new_size,
- (unsigned long) min_new_size));
-
- if (new_size > thr->valstack_max) {
- /* Note: may be triggered even if minimal new_size would not reach the limit,
- * plan limit accordingly (taking DUK_VALSTACK_GROW_STEP into account).
- */
- if (throw_flag) {
- DUK_ERROR_RANGE(thr, DUK_STR_VALSTACK_LIMIT);
- } else {
- return 0;
- }
- }
-
- /*
- * When resizing the valstack, a mark-and-sweep may be triggered for
- * the allocation of the new valstack. If the mark-and-sweep needs
- * to use our thread for something, it may cause *the same valstack*
- * to be resized recursively. This happens e.g. when mark-and-sweep
- * finalizers are called. This is taken into account carefully in
- * duk__resize_valstack().
- *
- * 'new_size' is known to be <= valstack_max, which ensures that
- * size_t and pointer arithmetic won't wrap in duk__resize_valstack().
- */
-
- if (!duk__resize_valstack(ctx, new_size)) {
- if (is_shrink) {
- DUK_DD(DUK_DDPRINT("valstack resize failed, but is a shrink, ignore"));
- return 1;
- }
-
- DUK_DD(DUK_DDPRINT("valstack resize failed"));
-
- if (throw_flag) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- } else {
- return 0;
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("valstack resize successful"));
- return 1;
-}
-
-DUK_EXTERNAL duk_bool_t duk_check_stack(duk_context *ctx, duk_idx_t extra) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_size_t min_new_size;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- if (DUK_UNLIKELY(extra < 0)) {
- /* Clamping to zero makes the API more robust to calling code
- * calculation errors.
- */
- extra = 0;
- }
-
- min_new_size = (thr->valstack_top - thr->valstack) + extra + DUK_VALSTACK_INTERNAL_EXTRA;
- return duk_valstack_resize_raw(ctx,
- min_new_size, /* min_new_size */
- 0 /* no shrink */ | /* flags */
- 0 /* no compact */ |
- 0 /* no throw */);
-}
-
-DUK_EXTERNAL void duk_require_stack(duk_context *ctx, duk_idx_t extra) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_size_t min_new_size;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- if (DUK_UNLIKELY(extra < 0)) {
- /* Clamping to zero makes the API more robust to calling code
- * calculation errors.
- */
- extra = 0;
- }
-
- min_new_size = (thr->valstack_top - thr->valstack) + extra + DUK_VALSTACK_INTERNAL_EXTRA;
- (void) duk_valstack_resize_raw(ctx,
- min_new_size, /* min_new_size */
- 0 /* no shrink */ | /* flags */
- 0 /* no compact */ |
- DUK_VSRESIZE_FLAG_THROW);
-}
-
-DUK_EXTERNAL duk_bool_t duk_check_stack_top(duk_context *ctx, duk_idx_t top) {
- duk_size_t min_new_size;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (DUK_UNLIKELY(top < 0)) {
- /* Clamping to zero makes the API more robust to calling code
- * calculation errors.
- */
- top = 0;
- }
-
- min_new_size = top + DUK_VALSTACK_INTERNAL_EXTRA;
- return duk_valstack_resize_raw(ctx,
- min_new_size, /* min_new_size */
- 0 /* no shrink */ | /* flags */
- 0 /* no compact */ |
- 0 /* no throw */);
-}
-
-DUK_EXTERNAL void duk_require_stack_top(duk_context *ctx, duk_idx_t top) {
- duk_size_t min_new_size;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (DUK_UNLIKELY(top < 0)) {
- /* Clamping to zero makes the API more robust to calling code
- * calculation errors.
- */
- top = 0;
- }
-
- min_new_size = top + DUK_VALSTACK_INTERNAL_EXTRA;
- (void) duk_valstack_resize_raw(ctx,
- min_new_size, /* min_new_size */
- 0 /* no shrink */ | /* flags */
- 0 /* no compact */ |
- DUK_VSRESIZE_FLAG_THROW);
-}
-
-/*
- * Basic stack manipulation: swap, dup, insert, replace, etc
- */
-
-DUK_EXTERNAL void duk_swap(duk_context *ctx, duk_idx_t index1, duk_idx_t index2) {
- duk_tval *tv1;
- duk_tval *tv2;
- duk_tval tv_tmp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv1 = duk_require_tval(ctx, index1);
- DUK_ASSERT(tv1 != NULL);
- tv2 = duk_require_tval(ctx, index2);
- DUK_ASSERT(tv2 != NULL);
-
- /* If tv1==tv2 this is a NOP, no check is needed */
- DUK_TVAL_SET_TVAL(&tv_tmp, tv1);
- DUK_TVAL_SET_TVAL(tv1, tv2);
- DUK_TVAL_SET_TVAL(tv2, &tv_tmp);
-}
-
-DUK_EXTERNAL void duk_swap_top(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_swap(ctx, index, -1);
-}
-
-DUK_EXTERNAL void duk_dup(duk_context *ctx, duk_idx_t from_index) {
- duk_hthread *thr;
- duk_tval *tv_from;
- duk_tval *tv_to;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
-
- tv_from = duk_require_tval(ctx, from_index);
- tv_to = thr->valstack_top++;
- DUK_ASSERT(tv_from != NULL);
- DUK_ASSERT(tv_to != NULL);
- DUK_TVAL_SET_TVAL(tv_to, tv_from);
- DUK_TVAL_INCREF(thr, tv_to); /* no side effects */
-}
-
-DUK_EXTERNAL void duk_dup_top(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_from;
- duk_tval *tv_to;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
-
- if (thr->valstack_top - thr->valstack_bottom <= 0) {
- DUK_ERROR_API_INDEX(thr, -1);
- return; /* unreachable */
- }
- tv_from = thr->valstack_top - 1;
- tv_to = thr->valstack_top++;
- DUK_ASSERT(tv_from != NULL);
- DUK_ASSERT(tv_to != NULL);
- DUK_TVAL_SET_TVAL(tv_to, tv_from);
- DUK_TVAL_INCREF(thr, tv_to); /* no side effects */
-}
-
-DUK_EXTERNAL void duk_insert(duk_context *ctx, duk_idx_t to_index) {
- duk_tval *p;
- duk_tval *q;
- duk_tval tv_tmp;
- duk_size_t nbytes;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- p = duk_require_tval(ctx, to_index);
- DUK_ASSERT(p != NULL);
- q = duk_require_tval(ctx, -1);
- DUK_ASSERT(q != NULL);
-
- DUK_ASSERT(q >= p);
-
- /* nbytes
- * <--------->
- * [ ... | p | x | x | q ]
- * => [ ... | q | p | x | x ]
- */
-
- nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); /* Note: 'q' is top-1 */
-
- DUK_DDD(DUK_DDDPRINT("duk_insert: to_index=%ld, p=%p, q=%p, nbytes=%lu",
- (long) to_index, (void *) p, (void *) q, (unsigned long) nbytes));
-
- /* No net refcount changes. */
-
- if (nbytes > 0) {
- DUK_TVAL_SET_TVAL(&tv_tmp, q);
- DUK_ASSERT(nbytes > 0);
- DUK_MEMMOVE((void *) (p + 1), (const void *) p, (size_t) nbytes);
- DUK_TVAL_SET_TVAL(p, &tv_tmp);
- } else {
- /* nop: insert top to top */
- DUK_ASSERT(nbytes == 0);
- DUK_ASSERT(p == q);
- }
-}
-
-DUK_EXTERNAL void duk_replace(duk_context *ctx, duk_idx_t to_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv1;
- duk_tval *tv2;
- duk_tval tv_tmp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv1 = duk_require_tval(ctx, -1);
- DUK_ASSERT(tv1 != NULL);
- tv2 = duk_require_tval(ctx, to_index);
- DUK_ASSERT(tv2 != NULL);
-
- /* For tv1 == tv2, both pointing to stack top, the end result
- * is same as duk_pop(ctx).
- */
- DUK_TVAL_SET_TVAL(&tv_tmp, tv2);
- DUK_TVAL_SET_TVAL(tv2, tv1);
- DUK_TVAL_SET_UNDEFINED(tv1);
- thr->valstack_top--;
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-}
-
-DUK_EXTERNAL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv1;
- duk_tval *tv2;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr); /* w/o refcounting */
-
- tv1 = duk_require_tval(ctx, from_index);
- DUK_ASSERT(tv1 != NULL);
- tv2 = duk_require_tval(ctx, to_index);
- DUK_ASSERT(tv2 != NULL);
-
- /* For tv1 == tv2, this is a no-op (no explicit check needed). */
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv2, tv1); /* side effects */
-}
-
-DUK_EXTERNAL void duk_remove(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *p;
- duk_tval *q;
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk_tval tv_tmp;
-#endif
- duk_size_t nbytes;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- p = duk_require_tval(ctx, index);
- DUK_ASSERT(p != NULL);
- q = duk_require_tval(ctx, -1);
- DUK_ASSERT(q != NULL);
-
- DUK_ASSERT(q >= p);
-
- /* nbytes zero size case
- * <--------->
- * [ ... | p | x | x | q ] [ ... | p==q ]
- * => [ ... | x | x | q ] [ ... ]
- */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- /* use a temp: decref only when valstack reachable values are correct */
- DUK_TVAL_SET_TVAL(&tv_tmp, p);
-#endif
-
- nbytes = (duk_size_t) (((duk_uint8_t *) q) - ((duk_uint8_t *) p)); /* Note: 'q' is top-1 */
- DUK_MEMMOVE((void *) p, (const void *) (p + 1), (size_t) nbytes); /* zero size not an issue: pointers are valid */
-
- DUK_TVAL_SET_UNDEFINED(q);
- thr->valstack_top--;
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-#endif
-}
-
-/*
- * Stack slice primitives
- */
-
-DUK_EXTERNAL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx, duk_idx_t count, duk_bool_t is_copy) {
- duk_hthread *to_thr = (duk_hthread *) to_ctx;
- duk_hthread *from_thr = (duk_hthread *) from_ctx;
- void *src;
- duk_size_t nbytes;
- duk_tval *p;
- duk_tval *q;
-
- /* XXX: several pointer comparison issues here */
-
- DUK_ASSERT_CTX_VALID(to_ctx);
- DUK_ASSERT_CTX_VALID(from_ctx);
- DUK_ASSERT(to_ctx != NULL);
- DUK_ASSERT(from_ctx != NULL);
-
- if (to_ctx == from_ctx) {
- DUK_ERROR_API(to_thr, DUK_STR_INVALID_CONTEXT);
- return;
- }
- if ((count < 0) ||
- (count > (duk_idx_t) to_thr->valstack_max)) {
- /* Maximum value check ensures 'nbytes' won't wrap below. */
- DUK_ERROR_API(to_thr, DUK_STR_INVALID_COUNT);
- return;
- }
-
- nbytes = sizeof(duk_tval) * count;
- if (nbytes == 0) {
- return;
- }
- DUK_ASSERT(to_thr->valstack_top <= to_thr->valstack_end);
- if ((duk_size_t) ((duk_uint8_t *) to_thr->valstack_end - (duk_uint8_t *) to_thr->valstack_top) < nbytes) {
- DUK_ERROR_API(to_thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
- src = (void *) ((duk_uint8_t *) from_thr->valstack_top - nbytes);
- if (src < (void *) from_thr->valstack_bottom) {
- DUK_ERROR_API(to_thr, DUK_STR_INVALID_COUNT);
- }
-
- /* copy values (no overlap even if to_ctx == from_ctx; that's not
- * allowed now anyway)
- */
- DUK_ASSERT(nbytes > 0);
- DUK_MEMCPY((void *) to_thr->valstack_top, (const void *) src, (size_t) nbytes);
-
- p = to_thr->valstack_top;
- to_thr->valstack_top = (duk_tval *) (void *) (((duk_uint8_t *) p) + nbytes);
-
- if (is_copy) {
- /* Incref copies, keep originals. */
- q = to_thr->valstack_top;
- while (p < q) {
- DUK_TVAL_INCREF(to_thr, p); /* no side effects */
- p++;
- }
- } else {
- /* No net refcount change. */
- p = from_thr->valstack_top;
- q = (duk_tval *) (void *) (((duk_uint8_t *) p) - nbytes);
- from_thr->valstack_top = q;
-
- while (p > q) {
- p--;
- DUK_TVAL_SET_UNDEFINED(p);
- /* XXX: fast primitive to set a bunch of values to UNDEFINED */
- }
- }
-}
-
-/*
- * Get/require
- */
-
-DUK_EXTERNAL void duk_require_undefined(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_UNDEFINED(tv)) {
- return;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "undefined", DUK_STR_NOT_UNDEFINED);
- return; /* not reachable */
-}
-
-DUK_EXTERNAL void duk_require_null(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_NULL(tv)) {
- return;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "null", DUK_STR_NOT_NULL);
- return; /* not reachable */
-}
-
-DUK_EXTERNAL duk_bool_t duk_get_boolean(duk_context *ctx, duk_idx_t index) {
- duk_bool_t ret = 0; /* default: false */
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BOOLEAN(tv)) {
- ret = DUK_TVAL_GET_BOOLEAN(tv);
- }
-
- DUK_ASSERT(ret == 0 || ret == 1);
- return ret;
-}
-
-DUK_EXTERNAL duk_bool_t duk_require_boolean(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BOOLEAN(tv)) {
- duk_bool_t ret = DUK_TVAL_GET_BOOLEAN(tv);
- DUK_ASSERT(ret == 0 || ret == 1);
- return ret;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "boolean", DUK_STR_NOT_BOOLEAN);
- return 0; /* not reachable */
-}
-
-DUK_EXTERNAL duk_double_t duk_get_number(duk_context *ctx, duk_idx_t index) {
- duk_double_union ret;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret.d = DUK_DOUBLE_NAN; /* default: NaN */
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_NUMBER(tv)) {
- ret.d = DUK_TVAL_GET_NUMBER(tv);
- }
-
- /*
- * Number should already be in NaN-normalized form, but let's
- * normalize anyway.
- */
-
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&ret);
- return ret.d;
-}
-
-DUK_EXTERNAL duk_double_t duk_require_number(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_NUMBER(tv)) {
- duk_double_union ret;
- ret.d = DUK_TVAL_GET_NUMBER(tv);
-
- /*
- * Number should already be in NaN-normalized form,
- * but let's normalize anyway.
- */
-
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&ret);
- return ret.d;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "number", DUK_STR_NOT_NUMBER);
- return DUK_DOUBLE_NAN; /* not reachable */
-}
-
-DUK_EXTERNAL duk_int_t duk_get_int(duk_context *ctx, duk_idx_t index) {
- /* Custom coercion for API */
- DUK_ASSERT_CTX_VALID(ctx);
- return (duk_int_t) duk__api_coerce_d2i(ctx, index, 0 /*require*/);
-}
-
-DUK_EXTERNAL duk_uint_t duk_get_uint(duk_context *ctx, duk_idx_t index) {
- /* Custom coercion for API */
- DUK_ASSERT_CTX_VALID(ctx);
- return (duk_uint_t) duk__api_coerce_d2ui(ctx, index, 0 /*require*/);
-}
-
-DUK_EXTERNAL duk_int_t duk_require_int(duk_context *ctx, duk_idx_t index) {
- /* Custom coercion for API */
- DUK_ASSERT_CTX_VALID(ctx);
- return (duk_int_t) duk__api_coerce_d2i(ctx, index, 1 /*require*/);
-}
-
-DUK_EXTERNAL duk_uint_t duk_require_uint(duk_context *ctx, duk_idx_t index) {
- /* Custom coercion for API */
- DUK_ASSERT_CTX_VALID(ctx);
- return (duk_uint_t) duk__api_coerce_d2ui(ctx, index, 1 /*require*/);
-}
-
-DUK_EXTERNAL const char *duk_get_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
- const char *ret;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* default: NULL, length 0 */
- ret = NULL;
- if (out_len) {
- *out_len = 0;
- }
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_STRING(tv)) {
- /* Here we rely on duk_hstring instances always being zero
- * terminated even if the actual string is not.
- */
- duk_hstring *h = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h != NULL);
- ret = (const char *) DUK_HSTRING_GET_DATA(h);
- if (out_len) {
- *out_len = DUK_HSTRING_GET_BYTELEN(h);
- }
- }
-
- return ret;
-}
-
-DUK_EXTERNAL const char *duk_require_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
- duk_hthread *thr = (duk_hthread *) ctx;
- const char *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: this check relies on the fact that even a zero-size string
- * has a non-NULL pointer.
- */
- ret = duk_get_lstring(ctx, index, out_len);
- if (ret) {
- return ret;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "string", DUK_STR_NOT_STRING);
- return NULL; /* not reachable */
-}
-
-DUK_EXTERNAL const char *duk_get_string(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return duk_get_lstring(ctx, index, NULL);
-}
-
-DUK_EXTERNAL const char *duk_require_string(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return duk_require_lstring(ctx, index, NULL);
-}
-
-DUK_EXTERNAL void *duk_get_pointer(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_POINTER(tv)) {
- void *p = DUK_TVAL_GET_POINTER(tv); /* may be NULL */
- return (void *) p;
- }
-
- return NULL;
-}
-
-DUK_EXTERNAL void *duk_require_pointer(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Note: here we must be wary of the fact that a pointer may be
- * valid and be a NULL.
- */
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_POINTER(tv)) {
- void *p = DUK_TVAL_GET_POINTER(tv); /* may be NULL */
- return (void *) p;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "pointer", DUK_STR_NOT_POINTER);
- return NULL; /* not reachable */
-}
-
-#if 0 /*unused*/
-DUK_INTERNAL void *duk_get_voidptr(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(h != NULL);
- return (void *) h;
- }
-
- return NULL;
-}
-#endif
-
-DUK_LOCAL void *duk__get_buffer_helper(duk_context *ctx, duk_idx_t index, duk_size_t *out_size, duk_bool_t throw_flag) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- if (out_size != NULL) {
- *out_size = 0;
- }
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- if (out_size) {
- *out_size = DUK_HBUFFER_GET_SIZE(h);
- }
- return (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); /* may be NULL (but only if size is 0) */
- }
-
- if (throw_flag) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "buffer", DUK_STR_NOT_BUFFER);
- }
- return NULL;
-}
-
-DUK_EXTERNAL void *duk_get_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size) {
- return duk__get_buffer_helper(ctx, index, out_size, 0 /*throw_flag*/);
-}
-
-DUK_EXTERNAL void *duk_require_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size) {
- return duk__get_buffer_helper(ctx, index, out_size, 1 /*throw_flag*/);
-}
-
-DUK_LOCAL void *duk__get_buffer_data_helper(duk_context *ctx, duk_idx_t index, duk_size_t *out_size, duk_bool_t throw_flag) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- if (out_size != NULL) {
- *out_size = 0;
- }
-
- tv = duk_get_tval(ctx, index);
- if (tv == NULL) {
- goto fail;
- }
-
- if (DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- if (out_size) {
- *out_size = DUK_HBUFFER_GET_SIZE(h);
- }
- return (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h); /* may be NULL (but only if size is 0) */
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- /* XXX: this is probably a useful shared helper: for a
- * duk_hbufferobject, get a validated buffer pointer/length.
- */
- duk_hbufferobject *h_bufobj = (duk_hbufferobject *) h;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- if (h_bufobj->buf != NULL &&
- DUK_HBUFFEROBJECT_VALID_SLICE(h_bufobj)) {
- duk_uint8_t *p;
-
- p = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf);
- if (out_size != NULL) {
- *out_size = (duk_size_t) h_bufobj->length;
- }
- return (void *) (p + h_bufobj->offset);
- }
- /* if slice not fully valid, treat as error */
- }
- }
-
- fail:
- if (throw_flag) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "buffer", DUK_STR_NOT_BUFFER);
- }
- return NULL;
-}
-
-DUK_EXTERNAL void *duk_get_buffer_data(duk_context *ctx, duk_idx_t index, duk_size_t *out_size) {
- return duk__get_buffer_data_helper(ctx, index, out_size, 0 /*throw_flag*/);
-}
-
-DUK_EXTERNAL void *duk_require_buffer_data(duk_context *ctx, duk_idx_t index, duk_size_t *out_size) {
- return duk__get_buffer_data_helper(ctx, index, out_size, 1 /*throw_flag*/);
-}
-
-/* Raw helper for getting a value from the stack, checking its tag.
- * The tag cannot be a number because numbers don't have an internal
- * tag in the packed representation.
- */
-
-DUK_LOCAL duk_heaphdr *duk__get_tagged_heaphdr_raw(duk_context *ctx, duk_idx_t index, duk_uint_t tag) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && (DUK_TVAL_GET_TAG(tv) == tag)) {
- duk_heaphdr *ret;
- ret = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(ret != NULL); /* tagged null pointers should never occur */
- return ret;
- }
-
- return (duk_heaphdr *) NULL;
-}
-
-DUK_INTERNAL duk_hstring *duk_get_hstring(duk_context *ctx, duk_idx_t index) {
- return (duk_hstring *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_STRING);
-}
-
-DUK_INTERNAL duk_hstring *duk_require_hstring(duk_context *ctx, duk_idx_t index) {
- duk_heaphdr *h;
- h = duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_STRING);
- if (h == NULL) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(ctx, index, "string", DUK_STR_NOT_STRING);
- }
- return (duk_hstring *) h;
-}
-
-DUK_INTERNAL duk_hobject *duk_get_hobject(duk_context *ctx, duk_idx_t index) {
- return (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
-}
-
-DUK_INTERNAL duk_hobject *duk_require_hobject(duk_context *ctx, duk_idx_t index) {
- duk_heaphdr *h;
- h = duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (h == NULL) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(ctx, index, "object", DUK_STR_NOT_OBJECT);
- }
- return (duk_hobject *) h;
-}
-
-DUK_INTERNAL duk_hbuffer *duk_get_hbuffer(duk_context *ctx, duk_idx_t index) {
- return (duk_hbuffer *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_BUFFER);
-}
-
-DUK_INTERNAL duk_hbuffer *duk_require_hbuffer(duk_context *ctx, duk_idx_t index) {
- duk_heaphdr *h;
- h = duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_BUFFER);
- if (h == NULL) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(ctx, index, "buffer", DUK_STR_NOT_BUFFER);
- }
- return (duk_hbuffer *) h;
-}
-
-DUK_INTERNAL duk_hthread *duk_get_hthread(duk_context *ctx, duk_idx_t index) {
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (h != NULL && !DUK_HOBJECT_IS_THREAD(h)) {
- h = NULL;
- }
- return (duk_hthread *) h;
-}
-
-DUK_INTERNAL duk_hthread *duk_require_hthread(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (!(h != NULL && DUK_HOBJECT_IS_THREAD(h))) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "thread", DUK_STR_NOT_THREAD);
- }
- return (duk_hthread *) h;
-}
-
-DUK_INTERNAL duk_hcompiledfunction *duk_get_hcompiledfunction(duk_context *ctx, duk_idx_t index) {
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (h != NULL && !DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- h = NULL;
- }
- return (duk_hcompiledfunction *) h;
-}
-
-DUK_INTERNAL duk_hcompiledfunction *duk_require_hcompiledfunction(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (!(h != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(h))) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "compiledfunction", DUK_STR_NOT_COMPILEDFUNCTION);
- }
- return (duk_hcompiledfunction *) h;
-}
-
-DUK_INTERNAL duk_hnativefunction *duk_get_hnativefunction(duk_context *ctx, duk_idx_t index) {
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (h != NULL && !DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- h = NULL;
- }
- return (duk_hnativefunction *) h;
-}
-
-DUK_INTERNAL duk_hnativefunction *duk_require_hnativefunction(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (!(h != NULL && DUK_HOBJECT_IS_NATIVEFUNCTION(h))) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "nativefunction", DUK_STR_NOT_NATIVEFUNCTION);
- }
- return (duk_hnativefunction *) h;
-}
-
-DUK_EXTERNAL duk_c_function duk_get_c_function(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
- duk_hobject *h;
- duk_hnativefunction *f;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return NULL;
- }
- if (!DUK_TVAL_IS_OBJECT(tv)) {
- return NULL;
- }
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- if (!DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- return NULL;
- }
- DUK_ASSERT(DUK_HOBJECT_HAS_NATIVEFUNCTION(h));
- f = (duk_hnativefunction *) h;
-
- return f->func;
-}
-
-DUK_EXTERNAL duk_c_function duk_require_c_function(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_c_function ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = duk_get_c_function(ctx, index);
- if (!ret) {
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "nativefunction", DUK_STR_NOT_NATIVEFUNCTION);
- }
- return ret;
-}
-
-DUK_EXTERNAL void duk_require_function(duk_context *ctx, duk_idx_t index) {
- if (!duk_is_function(ctx, index)) {
- DUK_ERROR_REQUIRE_TYPE_INDEX((duk_hthread *) ctx, index, "function", DUK_STR_NOT_FUNCTION);
- }
-}
-
-DUK_EXTERNAL duk_context *duk_get_context(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return (duk_context *) duk_get_hthread(ctx, index);
-}
-
-DUK_EXTERNAL duk_context *duk_require_context(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return (duk_context *) duk_require_hthread(ctx, index);
-}
-
-DUK_EXTERNAL void *duk_get_heapptr(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
- void *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- ret = (void *) DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(ret != NULL);
- return ret;
- }
-
- return (void *) NULL;
-}
-
-DUK_EXTERNAL void *duk_require_heapptr(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- void *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- ret = (void *) DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(ret != NULL);
- return ret;
- }
-
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "heapobject", DUK_STR_UNEXPECTED_TYPE);
- return (void *) NULL; /* not reachable */
-}
-
-#if 0
-/* This would be pointless: we'd return NULL for both lightfuncs and
- * unexpected types.
- */
-DUK_INTERNAL duk_hobject *duk_get_hobject_or_lfunc(duk_context *ctx, duk_idx_t index) {
-}
-#endif
-
-/* Useful for internal call sites where we either expect an object (function)
- * or a lightfunc. Accepts an object (returned as is) or a lightfunc (coerced
- * to an object). Return value is NULL if value is neither an object nor a
- * lightfunc.
- */
-DUK_INTERNAL duk_hobject *duk_get_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- return DUK_TVAL_GET_OBJECT(tv);
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) {
- duk_to_object(ctx, index);
- return duk_require_hobject(ctx, index);
- }
-
- return NULL;
-}
-
-/* Useful for internal call sites where we either expect an object (function)
- * or a lightfunc. Returns NULL for a lightfunc.
- */
-DUK_INTERNAL duk_hobject *duk_require_hobject_or_lfunc(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- return DUK_TVAL_GET_OBJECT(tv);
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) {
- return NULL;
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "object", DUK_STR_NOT_OBJECT);
- return NULL; /* not reachable */
-}
-
-/* Useful for internal call sites where we either expect an object (function)
- * or a lightfunc. Accepts an object (returned as is) or a lightfunc (coerced
- * to an object). Return value is never NULL.
- */
-DUK_INTERNAL duk_hobject *duk_require_hobject_or_lfunc_coerce(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- return DUK_TVAL_GET_OBJECT(tv);
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) {
- duk_to_object(ctx, index);
- return duk_require_hobject(ctx, index);
- }
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, "object", DUK_STR_NOT_OBJECT);
- return NULL; /* not reachable */
-}
-
-DUK_INTERNAL duk_hobject *duk_get_hobject_with_class(duk_context *ctx, duk_idx_t index, duk_small_uint_t classnum) {
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(classnum >= 0); /* unsigned */
- DUK_ASSERT(classnum <= DUK_HOBJECT_CLASS_MAX);
-
- h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (h != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(h) != classnum) {
- h = NULL;
- }
- return h;
-}
-
-DUK_INTERNAL duk_hobject *duk_require_hobject_with_class(duk_context *ctx, duk_idx_t index, duk_small_uint_t classnum) {
- duk_hthread *thr;
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(classnum >= 0); /* unsigned */
- DUK_ASSERT(classnum <= DUK_HOBJECT_CLASS_MAX);
- thr = (duk_hthread *) ctx;
-
- h = (duk_hobject *) duk__get_tagged_heaphdr_raw(ctx, index, DUK_TAG_OBJECT);
- if (!(h != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(h) == classnum)) {
- duk_hstring *h_class;
- h_class = DUK_HTHREAD_GET_STRING(thr, DUK_HOBJECT_CLASS_NUMBER_TO_STRIDX(classnum));
- DUK_UNREF(h_class);
-
- DUK_ERROR_REQUIRE_TYPE_INDEX(thr, index, (const char *) DUK_HSTRING_GET_DATA(h_class), DUK_STR_UNEXPECTED_TYPE);
- }
- return h;
-}
-
-DUK_EXTERNAL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return 0;
- }
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL:
- case DUK_TAG_BOOLEAN:
- case DUK_TAG_POINTER:
- return 0;
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h != NULL);
- return (duk_size_t) DUK_HSTRING_GET_CHARLEN(h);
- }
- case DUK_TAG_OBJECT: {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- return (duk_size_t) duk_hobject_get_length((duk_hthread *) ctx, h);
- }
- case DUK_TAG_BUFFER: {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- return (duk_size_t) DUK_HBUFFER_GET_SIZE(h);
- }
- case DUK_TAG_LIGHTFUNC: {
- duk_small_uint_t lf_flags;
- lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv);
- return (duk_size_t) DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags);
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- return 0;
- }
-
- DUK_UNREACHABLE();
-}
-
-DUK_INTERNAL void duk_set_length(duk_context *ctx, duk_idx_t index, duk_size_t length) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h = duk_get_hobject(ctx, index);
- if (!h) {
- return;
- }
-
- duk_hobject_set_length(thr, h, (duk_uint32_t) length); /* XXX: typing */
-}
-
-/*
- * Conversions and coercions
- *
- * The conversion/coercions are in-place operations on the value stack.
- * Some operations are implemented here directly, while others call a
- * helper in duk_js_ops.c after validating arguments.
- */
-
-/* E5 Section 8.12.8 */
-
-DUK_LOCAL duk_bool_t duk__defaultvalue_coerce_attempt(duk_context *ctx, duk_idx_t index, duk_small_int_t func_stridx) {
- if (duk_get_prop_stridx(ctx, index, func_stridx)) {
- /* [ ... func ] */
- if (duk_is_callable(ctx, -1)) {
- duk_dup(ctx, index); /* -> [ ... func this ] */
- duk_call_method(ctx, 0); /* -> [ ... retval ] */
- if (duk_is_primitive(ctx, -1)) {
- duk_replace(ctx, index);
- return 1;
- }
- /* [ ... retval ]; popped below */
- }
- }
- duk_pop(ctx); /* [ ... func/retval ] -> [ ... ] */
- return 0;
-}
-
-DUK_EXTERNAL void duk_to_defaultvalue(duk_context *ctx, duk_idx_t index, duk_int_t hint) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- /* inline initializer for coercers[] is not allowed by old compilers like BCC */
- duk_small_int_t coercers[2];
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- coercers[0] = DUK_STRIDX_VALUE_OF;
- coercers[1] = DUK_STRIDX_TO_STRING;
-
- index = duk_require_normalize_index(ctx, index);
- obj = duk_require_hobject_or_lfunc(ctx, index);
-
- if (hint == DUK_HINT_NONE) {
- if (obj != NULL && DUK_HOBJECT_GET_CLASS_NUMBER(obj) == DUK_HOBJECT_CLASS_DATE) {
- hint = DUK_HINT_STRING;
- } else {
- hint = DUK_HINT_NUMBER;
- }
- }
-
- if (hint == DUK_HINT_STRING) {
- coercers[0] = DUK_STRIDX_TO_STRING;
- coercers[1] = DUK_STRIDX_VALUE_OF;
- }
-
- if (duk__defaultvalue_coerce_attempt(ctx, index, coercers[0])) {
- return;
- }
-
- if (duk__defaultvalue_coerce_attempt(ctx, index, coercers[1])) {
- return;
- }
-
- DUK_ERROR_TYPE(thr, DUK_STR_DEFAULTVALUE_COERCE_FAILED);
-}
-
-DUK_EXTERNAL void duk_to_undefined(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
-}
-
-DUK_EXTERNAL void duk_to_null(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_NULL_UPDREF(thr, tv); /* side effects */
-}
-
-/* E5 Section 9.1 */
-DUK_EXTERNAL void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t hint) {
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(hint == DUK_HINT_NONE || hint == DUK_HINT_NUMBER || hint == DUK_HINT_STRING);
-
- index = duk_require_normalize_index(ctx, index);
-
- if (!duk_check_type_mask(ctx, index, DUK_TYPE_MASK_OBJECT |
- DUK_TYPE_MASK_LIGHTFUNC)) {
- /* everything except object stay as is */
- return;
- }
- duk_to_defaultvalue(ctx, index, hint);
-}
-
-/* E5 Section 9.2 */
-DUK_EXTERNAL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_bool_t val;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- index = duk_require_normalize_index(ctx, index);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
-
- val = duk_js_toboolean(tv);
- DUK_ASSERT(val == 0 || val == 1);
-
- /* Note: no need to re-lookup tv, conversion is side effect free */
- DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv, val); /* side effects */
- return val;
-}
-
-DUK_EXTERNAL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_double_t d;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- /* XXX: fastint? */
- d = duk_js_tonumber(thr, tv);
-
- /* Note: need to re-lookup because ToNumber() may have side effects */
- tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */
- return d;
-}
-
-/* XXX: combine all the integer conversions: they share everything
- * but the helper function for coercion.
- */
-
-typedef duk_double_t (*duk__toint_coercer)(duk_hthread *thr, duk_tval *tv);
-
-DUK_LOCAL duk_double_t duk__to_int_uint_helper(duk_context *ctx, duk_idx_t index, duk__toint_coercer coerce_func) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_double_t d;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- d = coerce_func(thr, tv);
-
- /* XXX: fastint? */
-
- /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
- tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv, d); /* side effects */
- return d;
-}
-
-DUK_EXTERNAL duk_int_t duk_to_int(duk_context *ctx, duk_idx_t index) {
- /* Value coercion (in stack): ToInteger(), E5 Section 9.4
- * API return value coercion: custom
- */
- DUK_ASSERT_CTX_VALID(ctx);
- (void) duk__to_int_uint_helper(ctx, index, duk_js_tointeger);
- return (duk_int_t) duk__api_coerce_d2i(ctx, index, 0 /*require*/);
-}
-
-DUK_EXTERNAL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t index) {
- /* Value coercion (in stack): ToInteger(), E5 Section 9.4
- * API return value coercion: custom
- */
- DUK_ASSERT_CTX_VALID(ctx);
- (void) duk__to_int_uint_helper(ctx, index, duk_js_tointeger);
- return (duk_uint_t) duk__api_coerce_d2ui(ctx, index, 0 /*require*/);
-}
-
-DUK_EXTERNAL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_int32_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- ret = duk_js_toint32(thr, tv);
-
- /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
- tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv, ret); /* side effects */
- return ret;
-}
-
-DUK_EXTERNAL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_uint32_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- ret = duk_js_touint32(thr, tv);
-
- /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
- tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */
- return ret;
-}
-
-DUK_EXTERNAL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_uint16_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- ret = duk_js_touint16(thr, tv);
-
- /* Relookup in case coerce_func() has side effects, e.g. ends up coercing an object */
- tv = duk_require_tval(ctx, index);
- DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv, ret); /* side effects */
- return ret;
-}
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Special coercion for Uint8ClampedArray. */
-DUK_INTERNAL duk_uint8_t duk_to_uint8clamped(duk_context *ctx, duk_idx_t index) {
- duk_double_t d;
- duk_double_t t;
- duk_uint8_t ret;
-
- /* XXX: Simplify this algorithm, should be possible to come up with
- * a shorter and faster algorithm by inspecting IEEE representation
- * directly.
- */
-
- d = duk_to_number(ctx, index);
- if (d <= 0.0) {
- return 0;
- } else if (d >= 255) {
- return 255;
- } else if (DUK_ISNAN(d)) {
- /* Avoid NaN-to-integer coercion as it is compiler specific. */
- return 0;
- }
-
- t = d - DUK_FLOOR(d);
- if (t == 0.5) {
- /* Exact halfway, round to even. */
- ret = (duk_uint8_t) d;
- ret = (ret + 1) & 0xfe; /* Example: d=3.5, t=0.5 -> ret = (3 + 1) & 0xfe = 4 & 0xfe = 4
- * Example: d=4.5, t=0.5 -> ret = (4 + 1) & 0xfe = 5 & 0xfe = 4
- */
- } else {
- /* Not halfway, round to nearest. */
- ret = (duk_uint8_t) (d + 0.5);
- }
- return ret;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-DUK_EXTERNAL const char *duk_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- (void) duk_to_string(ctx, index);
- return duk_require_lstring(ctx, index, out_len);
-}
-
-DUK_LOCAL duk_ret_t duk__safe_to_string_raw(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_to_string(ctx, -1);
- return 1;
-}
-
-DUK_EXTERNAL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
-
- /* We intentionally ignore the duk_safe_call() return value and only
- * check the output type. This way we don't also need to check that
- * the returned value is indeed a string in the success case.
- */
-
- duk_dup(ctx, index);
- (void) duk_safe_call(ctx, duk__safe_to_string_raw, 1 /*nargs*/, 1 /*nrets*/);
- if (!duk_is_string(ctx, -1)) {
- /* Error: try coercing error to string once. */
- (void) duk_safe_call(ctx, duk__safe_to_string_raw, 1 /*nargs*/, 1 /*nrets*/);
- if (!duk_is_string(ctx, -1)) {
- /* Double error */
- duk_pop(ctx);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_UC_ERROR);
- } else {
- ;
- }
- } else {
- ;
- }
- DUK_ASSERT(duk_is_string(ctx, -1));
- DUK_ASSERT(duk_get_string(ctx, -1) != NULL);
-
- duk_replace(ctx, index);
- return duk_get_lstring(ctx, index, out_len);
-}
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) /* only needed by debugger for now */
-DUK_INTERNAL duk_hstring *duk_safe_to_hstring(duk_context *ctx, duk_idx_t index) {
- (void) duk_safe_to_string(ctx, index);
- DUK_ASSERT(duk_is_string(ctx, index));
- DUK_ASSERT(duk_get_hstring(ctx, index) != NULL);
- return duk_get_hstring(ctx, index);
-}
-#endif
-
-/* Coerce top into Object.prototype.toString() output. */
-DUK_INTERNAL void duk_to_object_class_string_top(duk_context *ctx) {
- duk_hthread *thr;
- duk_uint_t typemask;
- duk_hstring *h_strclass;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- typemask = duk_get_type_mask(ctx, -1);
- if (typemask & DUK_TYPE_MASK_UNDEFINED) {
- h_strclass = DUK_HTHREAD_STRING_UC_UNDEFINED(thr);
- } else if (typemask & DUK_TYPE_MASK_NULL) {
- h_strclass = DUK_HTHREAD_STRING_UC_NULL(thr);
- } else {
- duk_hobject *h_obj;
-
- duk_to_object(ctx, -1);
- h_obj = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_obj != NULL);
-
- h_strclass = DUK_HOBJECT_GET_CLASS_STRING(thr->heap, h_obj);
- }
- DUK_ASSERT(h_strclass != NULL);
-
- duk_pop(ctx);
- duk_push_sprintf(ctx, "[object %s]", (const char *) DUK_HSTRING_GET_DATA(h_strclass));
-}
-
-#if !defined(DUK_USE_PARANOID_ERRORS)
-DUK_INTERNAL void duk_push_hobject_class_string(duk_context *ctx, duk_hobject *h) {
- duk_hthread *thr;
- duk_hstring *h_strclass;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(h != NULL);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_strclass = DUK_HOBJECT_GET_CLASS_STRING(thr->heap, h);
- DUK_ASSERT(h_strclass != NULL);
- duk_push_sprintf(ctx, "[object %s]", (const char *) DUK_HSTRING_GET_DATA(h_strclass));
-}
-#endif /* !DUK_USE_PARANOID_ERRORS */
-
-/* XXX: other variants like uint, u32 etc */
-DUK_INTERNAL duk_int_t duk_to_int_clamped_raw(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval, duk_bool_t *out_clamped) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_tval tv_tmp;
- duk_double_t d, dmin, dmax;
- duk_int_t res;
- duk_bool_t clamped = 0;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- d = duk_js_tointeger(thr, tv); /* E5 Section 9.4, ToInteger() */
-
- dmin = (duk_double_t) minval;
- dmax = (duk_double_t) maxval;
-
- if (d < dmin) {
- clamped = 1;
- res = minval;
- d = dmin;
- } else if (d > dmax) {
- clamped = 1;
- res = maxval;
- d = dmax;
- } else {
- res = (duk_int_t) d;
- }
- DUK_UNREF(d); /* SCANBUILD: with suitable dmin/dmax limits 'd' is unused */
- /* 'd' and 'res' agree here */
-
- /* Relookup in case duk_js_tointeger() ends up e.g. coercing an object. */
- tv = duk_get_tval(ctx, index);
- DUK_ASSERT(tv != NULL); /* not popped by side effect */
- DUK_TVAL_SET_TVAL(&tv_tmp, tv);
-#if defined(DUK_USE_FASTINT)
-#if (DUK_INT_MAX <= 0x7fffffffL)
- DUK_TVAL_SET_FASTINT_I32(tv, res);
-#else
- /* Clamping needed if duk_int_t is 64 bits. */
- if (res >= DUK_FASTINT_MIN && res <= DUK_FASTINT_MAX) {
- DUK_TVAL_SET_FASTINT(tv, res);
- } else {
- DUK_TVAL_SET_NUMBER(tv, d);
- }
-#endif
-#else
- DUK_TVAL_SET_NUMBER(tv, d); /* no need to incref */
-#endif
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
-
- if (out_clamped) {
- *out_clamped = clamped;
- } else {
- /* coerced value is updated to value stack even when RangeError thrown */
- if (clamped) {
- DUK_ERROR_RANGE(thr, DUK_STR_NUMBER_OUTSIDE_RANGE);
- }
- }
-
- return res;
-}
-
-DUK_INTERNAL duk_int_t duk_to_int_clamped(duk_context *ctx, duk_idx_t index, duk_idx_t minval, duk_idx_t maxval) {
- duk_bool_t dummy;
- return duk_to_int_clamped_raw(ctx, index, minval, maxval, &dummy);
-}
-
-DUK_INTERNAL duk_int_t duk_to_int_check_range(duk_context *ctx, duk_idx_t index, duk_int_t minval, duk_int_t maxval) {
- return duk_to_int_clamped_raw(ctx, index, minval, maxval, NULL); /* out_clamped==NULL -> RangeError if outside range */
-}
-
-DUK_EXTERNAL const char *duk_to_string(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- index = duk_require_normalize_index(ctx, index);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED: {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LC_UNDEFINED);
- break;
- }
- case DUK_TAG_NULL: {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LC_NULL);
- break;
- }
- case DUK_TAG_BOOLEAN: {
- if (DUK_TVAL_GET_BOOLEAN(tv)) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_TRUE);
- } else {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_FALSE);
- }
- break;
- }
- case DUK_TAG_STRING: {
- /* nop */
- goto skip_replace;
- }
- case DUK_TAG_OBJECT: {
- duk_to_primitive(ctx, index, DUK_HINT_STRING);
- return duk_to_string(ctx, index); /* Note: recursive call */
- }
- case DUK_TAG_BUFFER: {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
-
- /* Note: this allows creation of internal strings. */
-
- DUK_ASSERT(h != NULL);
- duk_push_lstring(ctx,
- (const char *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h),
- (duk_size_t) DUK_HBUFFER_GET_SIZE(h));
- break;
- }
- case DUK_TAG_POINTER: {
- void *ptr = DUK_TVAL_GET_POINTER(tv);
- if (ptr != NULL) {
- duk_push_sprintf(ctx, DUK_STR_FMT_PTR, (void *) ptr);
- } else {
- /* Represent a null pointer as 'null' to be consistent with
- * the JX format variant. Native '%p' format for a NULL
- * pointer may be e.g. '(nil)'.
- */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LC_NULL);
- }
- break;
- }
- case DUK_TAG_LIGHTFUNC: {
- /* Should match Function.prototype.toString() */
- duk_push_lightfunc_tostring(ctx, tv);
- break;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- duk_push_tval(ctx, tv);
- duk_numconv_stringify(ctx,
- 10 /*radix*/,
- 0 /*precision:shortest*/,
- 0 /*force_exponential*/);
- break;
- }
- }
-
- duk_replace(ctx, index);
-
- skip_replace:
- return duk_require_string(ctx, index);
-}
-
-DUK_INTERNAL duk_hstring *duk_to_hstring(duk_context *ctx, duk_idx_t index) {
- duk_hstring *ret;
- DUK_ASSERT_CTX_VALID(ctx);
- duk_to_string(ctx, index);
- ret = duk_get_hstring(ctx, index);
- DUK_ASSERT(ret != NULL);
- return ret;
-}
-
-DUK_EXTERNAL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size_t *out_size, duk_uint_t mode) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hbuffer *h_buf;
- const duk_uint8_t *src_data;
- duk_size_t src_size;
- duk_uint8_t *dst_data;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(thr);
-
- index = duk_require_normalize_index(ctx, index);
-
- h_buf = duk_get_hbuffer(ctx, index);
- if (h_buf != NULL) {
- /* Buffer is kept as is, with the fixed/dynamic nature of the
- * buffer only changed if requested. An external buffer
- * is converted into a non-external dynamic buffer in a
- * duk_to_dynamic_buffer() call.
- */
- duk_uint_t tmp;
- duk_uint8_t *tmp_ptr;
-
- tmp_ptr = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_buf);
- src_data = (const duk_uint8_t *) tmp_ptr;
- src_size = DUK_HBUFFER_GET_SIZE(h_buf);
-
- tmp = (DUK_HBUFFER_HAS_DYNAMIC(h_buf) ? DUK_BUF_MODE_DYNAMIC : DUK_BUF_MODE_FIXED);
- if ((tmp == mode && !DUK_HBUFFER_HAS_EXTERNAL(h_buf)) ||
- mode == DUK_BUF_MODE_DONTCARE) {
- /* Note: src_data may be NULL if input is a zero-size
- * dynamic buffer.
- */
- dst_data = tmp_ptr;
- goto skip_copy;
- }
- } else {
- /* Non-buffer value is first ToString() coerced, then converted
- * to a buffer (fixed buffer is used unless a dynamic buffer is
- * explicitly requested).
- */
-
- src_data = (const duk_uint8_t *) duk_to_lstring(ctx, index, &src_size);
- }
-
- dst_data = (duk_uint8_t *) duk_push_buffer(ctx, src_size, (mode == DUK_BUF_MODE_DYNAMIC) /*dynamic*/);
- if (DUK_LIKELY(src_size > 0)) {
- /* When src_size == 0, src_data may be NULL (if source
- * buffer is dynamic), and dst_data may be NULL (if
- * target buffer is dynamic). Avoid zero-size memcpy()
- * with an invalid pointer.
- */
- DUK_MEMCPY((void *) dst_data, (const void *) src_data, (size_t) src_size);
- }
- duk_replace(ctx, index);
- skip_copy:
-
- if (out_size) {
- *out_size = src_size;
- }
- return dst_data;
-}
-
-DUK_EXTERNAL void *duk_to_pointer(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
- void *res;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL:
- case DUK_TAG_BOOLEAN:
- res = NULL;
- break;
- case DUK_TAG_POINTER:
- res = DUK_TVAL_GET_POINTER(tv);
- break;
- case DUK_TAG_STRING:
- case DUK_TAG_OBJECT:
- case DUK_TAG_BUFFER:
- /* Heap allocated: return heap pointer which is NOT useful
- * for the caller, except for debugging.
- */
- res = (void *) DUK_TVAL_GET_HEAPHDR(tv);
- break;
- case DUK_TAG_LIGHTFUNC:
- /* Function pointers do not always cast correctly to void *
- * (depends on memory and segmentation model for instance),
- * so they coerce to NULL.
- */
- res = NULL;
- break;
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- res = NULL;
- break;
- }
-
- duk_push_pointer(ctx, res);
- duk_replace(ctx, index);
- return res;
-}
-
-DUK_EXTERNAL void duk_to_object(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_uint_t flags = 0; /* shared flags for a subset of types */
- duk_small_int_t proto = 0;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL: {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_OBJECT_COERCIBLE);
- break;
- }
- case DUK_TAG_BOOLEAN: {
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BOOLEAN);
- proto = DUK_BIDX_BOOLEAN_PROTOTYPE;
- goto create_object;
- }
- case DUK_TAG_STRING: {
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_STRING);
- proto = DUK_BIDX_STRING_PROTOTYPE;
- goto create_object;
- }
- case DUK_TAG_OBJECT: {
- /* nop */
- break;
- }
- case DUK_TAG_BUFFER: {
- /* A plain buffer coerces to a Duktape.Buffer because it's the
- * object counterpart of the plain buffer value. But it might
- * still make more sense to produce an ArrayBuffer here?
- */
-
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
-
- h_val = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h_val != NULL);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_BUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufobj != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE((duk_hobject *) h_bufobj));
- DUK_ASSERT(DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_bufobj));
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- DUK_ASSERT(h_bufobj->offset == 0);
- h_bufobj->length = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_val);
- DUK_ASSERT(h_bufobj->shift == 0);
- DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8);
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
- goto replace_value;
- }
- case DUK_TAG_POINTER: {
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_POINTER);
- proto = DUK_BIDX_POINTER_PROTOTYPE;
- goto create_object;
- }
- case DUK_TAG_LIGHTFUNC: {
- /* Lightfunc coerces to a Function instance with concrete
- * properties. Since 'length' is virtual for Duktape/C
- * functions, don't need to define that.
- *
- * The result is made extensible to mimic what happens to
- * strings:
- * > Object.isExtensible(Object('foo'))
- * true
- */
- duk_small_uint_t lf_flags;
- duk_idx_t nargs;
- duk_small_uint_t lf_len;
- duk_c_function func;
- duk_hnativefunction *nf;
-
- DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags);
-
- nargs = (duk_idx_t) DUK_LFUNC_FLAGS_GET_NARGS(lf_flags);
- if (nargs == DUK_LFUNC_NARGS_VARARGS) {
- nargs = (duk_idx_t) DUK_VARARGS;
- }
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_CONSTRUCTABLE |
- DUK_HOBJECT_FLAG_NATIVEFUNCTION |
- DUK_HOBJECT_FLAG_NEWENV |
- DUK_HOBJECT_FLAG_STRICT |
- DUK_HOBJECT_FLAG_NOTAIL |
- /* DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC: omitted here intentionally */
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION);
- (void) duk__push_c_function_raw(ctx, func, nargs, flags);
-
- lf_len = DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags);
- if ((duk_idx_t) lf_len != nargs) {
- /* Explicit length is only needed if it differs from 'nargs'. */
- duk_push_int(ctx, (duk_int_t) lf_len);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE);
- }
- duk_push_lightfunc_name(ctx, tv);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
-
- nf = duk_get_hnativefunction(ctx, -1);
- DUK_ASSERT(nf != NULL);
- nf->magic = (duk_int16_t) DUK_LFUNC_FLAGS_GET_MAGIC(lf_flags);
-
- /* Enable DUKFUNC exotic behavior once properties are set up. */
- DUK_HOBJECT_SET_EXOTIC_DUKFUNC((duk_hobject *) nf);
- goto replace_value;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_NUMBER);
- proto = DUK_BIDX_NUMBER_PROTOTYPE;
- goto create_object;
- }
- }
- return;
-
- create_object:
- (void) duk_push_object_helper(ctx, flags, proto);
-
- /* Note: Boolean prototype's internal value property is not writable,
- * but duk_xdef_prop_stridx() disregards the write protection. Boolean
- * instances are immutable.
- *
- * String and buffer special behaviors are already enabled which is not
- * ideal, but a write to the internal value is not affected by them.
- */
- duk_dup(ctx, index);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE);
-
- replace_value:
- duk_replace(ctx, index);
-}
-
-/*
- * Type checking
- */
-
-DUK_LOCAL duk_bool_t duk__tag_check(duk_context *ctx, duk_idx_t index, duk_small_uint_t tag) {
- duk_tval *tv;
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return 0;
- }
- return (DUK_TVAL_GET_TAG(tv) == tag);
-}
-
-DUK_LOCAL duk_bool_t duk__obj_flag_any_default_false(duk_context *ctx, duk_idx_t index, duk_uint_t flag_mask) {
- duk_hobject *obj;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_get_hobject(ctx, index);
- if (obj) {
- return (DUK_HEAPHDR_CHECK_FLAG_BITS((duk_heaphdr *) obj, flag_mask) ? 1 : 0);
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return DUK_TYPE_NONE;
- }
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- return DUK_TYPE_UNDEFINED;
- case DUK_TAG_NULL:
- return DUK_TYPE_NULL;
- case DUK_TAG_BOOLEAN:
- return DUK_TYPE_BOOLEAN;
- case DUK_TAG_STRING:
- return DUK_TYPE_STRING;
- case DUK_TAG_OBJECT:
- return DUK_TYPE_OBJECT;
- case DUK_TAG_BUFFER:
- return DUK_TYPE_BUFFER;
- case DUK_TAG_POINTER:
- return DUK_TYPE_POINTER;
- case DUK_TAG_LIGHTFUNC:
- return DUK_TYPE_LIGHTFUNC;
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* Note: number has no explicit tag (in 8-byte representation) */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- return DUK_TYPE_NUMBER;
- }
- DUK_UNREACHABLE();
-}
-
-#if defined(DUK_USE_VERBOSE_ERRORS) && defined(DUK_USE_PARANOID_ERRORS)
-DUK_LOCAL const char *duk__type_names[] = {
- "none",
- "undefined",
- "null",
- "boolean",
- "number",
- "string",
- "object",
- "buffer",
- "pointer",
- "lightfunc"
-};
-
-DUK_INTERNAL const char *duk_get_type_name(duk_context *ctx, duk_idx_t index) {
- duk_int_t type_tag;
-
- type_tag = duk_get_type(ctx, index);
- DUK_ASSERT(type_tag >= DUK_TYPE_MIN && type_tag <= DUK_TYPE_MAX);
- DUK_ASSERT(DUK_TYPE_MIN == 0 && sizeof(duk__type_names) / sizeof(const char *) == DUK_TYPE_MAX + 1);
-
- return duk__type_names[type_tag];
-}
-#endif
-
-DUK_EXTERNAL duk_bool_t duk_check_type(duk_context *ctx, duk_idx_t index, duk_int_t type) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return (duk_get_type(ctx, index) == type) ? 1 : 0;
-}
-
-DUK_EXTERNAL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return DUK_TYPE_MASK_NONE;
- }
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- return DUK_TYPE_MASK_UNDEFINED;
- case DUK_TAG_NULL:
- return DUK_TYPE_MASK_NULL;
- case DUK_TAG_BOOLEAN:
- return DUK_TYPE_MASK_BOOLEAN;
- case DUK_TAG_STRING:
- return DUK_TYPE_MASK_STRING;
- case DUK_TAG_OBJECT:
- return DUK_TYPE_MASK_OBJECT;
- case DUK_TAG_BUFFER:
- return DUK_TYPE_MASK_BUFFER;
- case DUK_TAG_POINTER:
- return DUK_TYPE_MASK_POINTER;
- case DUK_TAG_LIGHTFUNC:
- return DUK_TYPE_MASK_LIGHTFUNC;
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* Note: number has no explicit tag (in 8-byte representation) */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- return DUK_TYPE_MASK_NUMBER;
- }
- DUK_UNREACHABLE();
-}
-
-DUK_EXTERNAL duk_bool_t duk_check_type_mask(duk_context *ctx, duk_idx_t index, duk_uint_t mask) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (duk_get_type_mask(ctx, index) & mask) {
- return 1;
- }
- if (mask & DUK_TYPE_MASK_THROW) {
- DUK_ERROR_TYPE(thr, DUK_STR_UNEXPECTED_TYPE);
- DUK_UNREACHABLE();
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_undefined(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_UNDEFINED);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_null(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_NULL);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_null_or_undefined(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
- duk_small_uint_t tag;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return 0;
- }
- tag = DUK_TVAL_GET_TAG(tv);
- return (tag == DUK_TAG_UNDEFINED) || (tag == DUK_TAG_NULL);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_boolean(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_BOOLEAN);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_number(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /*
- * Number is special because it doesn't have a specific
- * tag in the 8-byte representation.
- */
-
- /* XXX: shorter version for 12-byte representation? */
-
- tv = duk_get_tval(ctx, index);
- if (!tv) {
- return 0;
- }
- return DUK_TVAL_IS_NUMBER(tv);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_nan(duk_context *ctx, duk_idx_t index) {
- /* XXX: This will now return false for non-numbers, even though they would
- * coerce to NaN (as a general rule). In particular, duk_get_number()
- * returns a NaN for non-numbers, so should this function also return
- * true for non-numbers?
- */
-
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (!tv || !DUK_TVAL_IS_NUMBER(tv)) {
- return 0;
- }
- return DUK_ISNAN(DUK_TVAL_GET_NUMBER(tv));
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_string(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_STRING);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_object(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_OBJECT);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_buffer(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_BUFFER);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_pointer(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_POINTER);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_lightfunc(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__tag_check(ctx, index, DUK_TAG_LIGHTFUNC);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_array(duk_context *ctx, duk_idx_t index) {
- duk_hobject *obj;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- obj = duk_get_hobject(ctx, index);
- if (obj) {
- return (DUK_HOBJECT_GET_CLASS_NUMBER(obj) == DUK_HOBJECT_CLASS_ARRAY ? 1 : 0);
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_function(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_LIGHTFUNC(tv)) {
- return 1;
- }
- return duk__obj_flag_any_default_false(ctx,
- index,
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION |
- DUK_HOBJECT_FLAG_NATIVEFUNCTION |
- DUK_HOBJECT_FLAG_BOUND);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_c_function(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__obj_flag_any_default_false(ctx,
- index,
- DUK_HOBJECT_FLAG_NATIVEFUNCTION);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_ecmascript_function(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__obj_flag_any_default_false(ctx,
- index,
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_bound_function(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__obj_flag_any_default_false(ctx,
- index,
- DUK_HOBJECT_FLAG_BOUND);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_thread(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk__obj_flag_any_default_false(ctx,
- index,
- DUK_HOBJECT_FLAG_THREAD);
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_HAS_DYNAMIC(h) ? 0 : 1);
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0);
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t index) {
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv = duk_get_tval(ctx, index);
- if (tv && DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_HAS_DYNAMIC(h) && DUK_HBUFFER_HAS_EXTERNAL(h) ? 1 : 0);
- }
- return 0;
-}
-
-DUK_EXTERNAL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
- duk_uint_t sanity;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h = duk_get_hobject(ctx, index);
-
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- if (!h) {
- return DUK_ERR_NONE;
- }
- if (h == thr->builtins[DUK_BIDX_EVAL_ERROR_PROTOTYPE]) {
- return DUK_ERR_EVAL_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_RANGE_ERROR_PROTOTYPE]) {
- return DUK_ERR_RANGE_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_REFERENCE_ERROR_PROTOTYPE]) {
- return DUK_ERR_REFERENCE_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_SYNTAX_ERROR_PROTOTYPE]) {
- return DUK_ERR_SYNTAX_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_TYPE_ERROR_PROTOTYPE]) {
- return DUK_ERR_TYPE_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_URI_ERROR_PROTOTYPE]) {
- return DUK_ERR_URI_ERROR;
- }
- if (h == thr->builtins[DUK_BIDX_ERROR_PROTOTYPE]) {
- return DUK_ERR_ERROR;
- }
-
- h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h);
- } while (--sanity > 0);
-
- return DUK_ERR_NONE;
-}
-
-/*
- * Pushers
- */
-
-DUK_INTERNAL void duk_push_tval(duk_context *ctx, duk_tval *tv) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(tv != NULL);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_TVAL(tv_slot, tv);
- DUK_TVAL_INCREF(thr, tv); /* no side effects */
-}
-
-DUK_EXTERNAL void duk_push_undefined(duk_context *ctx) {
- duk_hthread *thr;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
-
- /* Because value stack init policy is 'undefined above top',
- * we don't need to write, just assert.
- */
- thr->valstack_top++;
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top - 1));
-}
-
-DUK_EXTERNAL void duk_push_null(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_NULL(tv_slot);
-}
-
-DUK_EXTERNAL void duk_push_boolean(duk_context *ctx, duk_bool_t val) {
- duk_hthread *thr;
- duk_tval *tv_slot;
- duk_small_int_t b;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- b = (val ? 1 : 0); /* ensure value is 1 or 0 (not other non-zero) */
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_BOOLEAN(tv_slot, b);
-}
-
-DUK_EXTERNAL void duk_push_true(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_BOOLEAN_TRUE(tv_slot);
-}
-
-DUK_EXTERNAL void duk_push_false(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_BOOLEAN_FALSE(tv_slot);
-}
-
-/* normalize NaN which may not match our canonical internal NaN */
-DUK_EXTERNAL void duk_push_number(duk_context *ctx, duk_double_t val) {
- duk_hthread *thr;
- duk_tval *tv_slot;
- duk_double_union du;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- du.d = val;
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_NUMBER(tv_slot, du.d);
-}
-
-DUK_EXTERNAL void duk_push_int(duk_context *ctx, duk_int_t val) {
-#if defined(DUK_USE_FASTINT)
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
-#if DUK_INT_MAX <= 0x7fffffffL
- DUK_TVAL_SET_FASTINT_I32(tv_slot, (duk_int32_t) val);
-#else
- if (val >= DUK_FASTINT_MIN && val <= DUK_FASTINT_MAX) {
- DUK_TVAL_SET_FASTINT(tv_slot, (duk_int64_t) val);
- } else {
- duk_double_t = (duk_double_t) val;
- DUK_TVAL_SET_NUMBER(tv_slot, d);
- }
-#endif
-#else /* DUK_USE_FASTINT */
- duk_hthread *thr;
- duk_tval *tv_slot;
- duk_double_t d;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- d = (duk_double_t) val;
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_NUMBER(tv_slot, d);
-#endif /* DUK_USE_FASTINT */
-}
-
-DUK_EXTERNAL void duk_push_uint(duk_context *ctx, duk_uint_t val) {
-#if defined(DUK_USE_FASTINT)
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
-#if DUK_UINT_MAX <= 0xffffffffUL
- DUK_TVAL_SET_FASTINT_U32(tv_slot, (duk_uint32_t) val);
-#else
- if (val <= DUK_FASTINT_MAX) { /* val is unsigned so >= 0 */
- /* XXX: take advantage of val being unsigned, no need to mask */
- DUK_TVAL_SET_FASTINT(tv_slot, (duk_int64_t) val);
- } else {
- duk_double_t = (duk_double_t) val;
- DUK_TVAL_SET_NUMBER(tv_slot, d);
- }
-#endif
-#else /* DUK_USE_FASTINT */
- duk_hthread *thr;
- duk_tval *tv_slot;
- duk_double_t d;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- d = (duk_double_t) val;
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_NUMBER(tv_slot, d);
-#endif /* DUK_USE_FASTINT */
-}
-
-DUK_EXTERNAL void duk_push_nan(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv_slot;
- duk_double_union du;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- DUK_DBLUNION_SET_NAN(&du);
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_NUMBER(tv_slot, du.d);
-}
-
-DUK_EXTERNAL const char *duk_push_lstring(duk_context *ctx, const char *str, duk_size_t len) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack before interning (avoid hanging temp) */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- /* NULL with zero length represents an empty string; NULL with higher
- * length is also now trated like an empty string although it is
- * a bit dubious. This is unlike duk_push_string() which pushes a
- * 'null' if the input string is a NULL.
- */
- if (!str) {
- len = 0;
- }
-
- /* Check for maximum string length */
- if (len > DUK_HSTRING_MAX_BYTELEN) {
- DUK_ERROR_RANGE(thr, DUK_STR_STRING_TOO_LONG);
- }
-
- h = duk_heap_string_intern_checked(thr, (const duk_uint8_t *) str, (duk_uint32_t) len);
- DUK_ASSERT(h != NULL);
-
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_STRING(tv_slot, h);
- DUK_HSTRING_INCREF(thr, h); /* no side effects */
-
- return (const char *) DUK_HSTRING_GET_DATA(h);
-}
-
-DUK_EXTERNAL const char *duk_push_string(duk_context *ctx, const char *str) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (str) {
- return duk_push_lstring(ctx, str, DUK_STRLEN(str));
- } else {
- duk_push_null(ctx);
- return NULL;
- }
-}
-
-#ifdef DUK_USE_FILE_IO
-/* This is a bit clunky because it is ANSI C portable. Should perhaps
- * relocate to another file because this is potentially platform
- * dependent.
- */
-DUK_EXTERNAL const char *duk_push_string_file_raw(duk_context *ctx, const char *path, duk_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_file *f = NULL;
- char *buf;
- long sz; /* ANSI C typing */
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (!path) {
- goto fail;
- }
- f = DUK_FOPEN(path, "rb");
- if (!f) {
- goto fail;
- }
- if (DUK_FSEEK(f, 0, SEEK_END) < 0) {
- goto fail;
- }
- sz = DUK_FTELL(f);
- if (sz < 0) {
- goto fail;
- }
- if (DUK_FSEEK(f, 0, SEEK_SET) < 0) {
- goto fail;
- }
- buf = (char *) duk_push_fixed_buffer(ctx, (duk_size_t) sz);
- DUK_ASSERT(buf != NULL);
- if ((duk_size_t) DUK_FREAD(buf, 1, (size_t) sz, f) != (duk_size_t) sz) {
- goto fail;
- }
- (void) DUK_FCLOSE(f); /* ignore fclose() error */
- f = NULL;
- return duk_to_string(ctx, -1);
-
- fail:
- if (f) {
- DUK_FCLOSE(f);
- }
-
- if (flags != 0) {
- DUK_ASSERT(flags == DUK_STRING_PUSH_SAFE); /* only flag now */
- duk_push_undefined(ctx);
- } else {
- /* XXX: string not shared because it is conditional */
- DUK_ERROR_TYPE(thr, "read file error");
- }
- return NULL;
-}
-#else
-DUK_EXTERNAL const char *duk_push_string_file_raw(duk_context *ctx, const char *path, duk_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(path);
-
- if (flags != 0) {
- DUK_ASSERT(flags == DUK_STRING_PUSH_SAFE); /* only flag now */
- duk_push_undefined(ctx);
- } else {
- /* XXX: string not shared because it is conditional */
- DUK_ERROR_UNSUPPORTED(thr, "file I/O disabled");
- }
- return NULL;
-}
-#endif /* DUK_USE_FILE_IO */
-
-DUK_EXTERNAL void duk_push_pointer(duk_context *ctx, void *val) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK__CHECK_SPACE();
- tv_slot = thr->valstack_top++;
- DUK_TVAL_SET_POINTER(tv_slot, val);
-}
-
-DUK_LOCAL void duk__push_this_helper(duk_context *ctx, duk_small_uint_t check_object_coercible) {
- duk_hthread *thr;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* avoid warning (unsigned) */
- thr = (duk_hthread *) ctx;
- DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
- DUK__CHECK_SPACE();
-
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(thr->valstack_top)); /* because of valstack init policy */
- tv_slot = thr->valstack_top++;
-
- if (DUK_UNLIKELY(thr->callstack_top == 0)) {
- if (check_object_coercible) {
- goto type_error;
- }
- /* 'undefined' already on stack top */
- } else {
- duk_tval *tv;
-
- /* 'this' binding is just before current activation's bottom */
- DUK_ASSERT(thr->valstack_bottom > thr->valstack);
- tv = thr->valstack_bottom - 1;
- if (check_object_coercible &&
- (DUK_TVAL_IS_UNDEFINED(tv) || DUK_TVAL_IS_NULL(tv))) {
- /* XXX: better macro for DUK_TVAL_IS_UNDEFINED_OR_NULL(tv) */
- goto type_error;
- }
-
- DUK_TVAL_SET_TVAL(tv_slot, tv);
- DUK_TVAL_INCREF(thr, tv);
- }
- return;
-
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_OBJECT_COERCIBLE);
-}
-
-DUK_EXTERNAL void duk_push_this(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__push_this_helper(ctx, 0 /*check_object_coercible*/);
-}
-
-DUK_INTERNAL void duk_push_this_check_object_coercible(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
-}
-
-DUK_INTERNAL duk_hobject *duk_push_this_coercible_to_object(duk_context *ctx) {
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
- duk_to_object(ctx, -1);
- h = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h != NULL);
- return h;
-}
-
-DUK_INTERNAL duk_hstring *duk_push_this_coercible_to_string(duk_context *ctx) {
- duk_hstring *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__push_this_helper(ctx, 1 /*check_object_coercible*/);
- duk_to_string(ctx, -1);
- h = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h != NULL);
- return h;
-}
-
-DUK_INTERNAL duk_tval *duk_get_borrowed_this_tval(duk_context *ctx) {
- duk_hthread *thr;
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
-
- DUK_ASSERT(thr->callstack_top > 0); /* caller required to know */
- DUK_ASSERT(thr->valstack_bottom > thr->valstack); /* consequence of above */
- DUK_ASSERT(thr->valstack_bottom - 1 >= thr->valstack); /* 'this' binding exists */
-
- return thr->valstack_bottom - 1;
-}
-
-DUK_EXTERNAL void duk_push_current_function(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0);
- DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
-
- act = duk_hthread_get_current_activation(thr);
- if (act) {
- duk_push_tval(ctx, &act->tv_func);
- } else {
- duk_push_undefined(ctx);
- }
-}
-
-DUK_EXTERNAL void duk_push_current_thread(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
-
- if (thr->heap->curr_thread) {
- duk_push_hobject(ctx, (duk_hobject *) thr->heap->curr_thread);
- } else {
- duk_push_undefined(ctx);
- }
-}
-
-DUK_EXTERNAL void duk_push_global_object(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_push_hobject_bidx(ctx, DUK_BIDX_GLOBAL);
-}
-
-/* XXX: size optimize */
-DUK_LOCAL void duk__push_stash(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- if (!duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE)) {
- DUK_DDD(DUK_DDDPRINT("creating heap/global/thread stash on first use"));
- duk_pop(ctx);
- duk_push_object_internal(ctx);
- duk_dup_top(ctx);
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_C); /* [ ... parent stash stash ] -> [ ... parent stash ] */
- }
- duk_remove(ctx, -2);
-}
-
-DUK_EXTERNAL void duk_push_heap_stash(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_heap *heap;
- DUK_ASSERT_CTX_VALID(ctx);
- heap = thr->heap;
- DUK_ASSERT(heap->heap_object != NULL);
- duk_push_hobject(ctx, heap->heap_object);
- duk__push_stash(ctx);
-}
-
-DUK_EXTERNAL void duk_push_global_stash(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- duk_push_global_object(ctx);
- duk__push_stash(ctx);
-}
-
-DUK_EXTERNAL void duk_push_thread_stash(duk_context *ctx, duk_context *target_ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- DUK_ASSERT_CTX_VALID(ctx);
- if (!target_ctx) {
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return; /* not reached */
- }
- duk_push_hobject(ctx, (duk_hobject *) target_ctx);
- duk__push_stash(ctx);
-}
-
-/* XXX: duk_ssize_t would be useful here */
-DUK_LOCAL duk_int_t duk__try_push_vsprintf(duk_context *ctx, void *buf, duk_size_t sz, const char *fmt, va_list ap) {
- duk_int_t len;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(ctx);
-
- /* NUL terminator handling doesn't matter here */
- len = DUK_VSNPRINTF((char *) buf, sz, fmt, ap);
- if (len < (duk_int_t) sz) {
- /* Return value of 'sz' or more indicates output was (potentially)
- * truncated.
- */
- return (duk_int_t) len;
- }
- return -1;
-}
-
-DUK_EXTERNAL const char *duk_push_vsprintf(duk_context *ctx, const char *fmt, va_list ap) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uint8_t stack_buf[DUK_PUSH_SPRINTF_INITIAL_SIZE];
- duk_size_t sz = DUK_PUSH_SPRINTF_INITIAL_SIZE;
- duk_bool_t pushed_buf = 0;
- void *buf;
- duk_int_t len; /* XXX: duk_ssize_t */
- const char *res;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* special handling of fmt==NULL */
- if (!fmt) {
- duk_hstring *h_str;
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
- h_str = DUK_HTHREAD_STRING_EMPTY_STRING(thr); /* rely on interning, must be this string */
- return (const char *) DUK_HSTRING_GET_DATA(h_str);
- }
-
- /* initial estimate based on format string */
- sz = DUK_STRLEN(fmt) + 16; /* format plus something to avoid just missing */
- if (sz < DUK_PUSH_SPRINTF_INITIAL_SIZE) {
- sz = DUK_PUSH_SPRINTF_INITIAL_SIZE;
- }
- DUK_ASSERT(sz > 0);
-
- /* Try to make do with a stack buffer to avoid allocating a temporary buffer.
- * This works 99% of the time which is quite nice.
- */
- for (;;) {
- va_list ap_copy; /* copied so that 'ap' can be reused */
-
- if (sz <= sizeof(stack_buf)) {
- buf = stack_buf;
- } else if (!pushed_buf) {
- pushed_buf = 1;
- buf = duk_push_dynamic_buffer(ctx, sz);
- } else {
- buf = duk_resize_buffer(ctx, -1, sz);
- }
- DUK_ASSERT(buf != NULL);
-
- DUK_VA_COPY(ap_copy, ap);
- len = duk__try_push_vsprintf(ctx, buf, sz, fmt, ap_copy);
- va_end(ap_copy);
- if (len >= 0) {
- break;
- }
-
- /* failed, resize and try again */
- sz = sz * 2;
- if (sz >= DUK_PUSH_SPRINTF_SANITY_LIMIT) {
- DUK_ERROR_API(thr, DUK_STR_SPRINTF_TOO_LONG);
- }
- }
-
- /* Cannot use duk_to_string() on the buffer because it is usually
- * larger than 'len'. Also, 'buf' is usually a stack buffer.
- */
- res = duk_push_lstring(ctx, (const char *) buf, (duk_size_t) len); /* [ buf? res ] */
- if (pushed_buf) {
- duk_remove(ctx, -2);
- }
- return res;
-}
-
-DUK_EXTERNAL const char *duk_push_sprintf(duk_context *ctx, const char *fmt, ...) {
- va_list ap;
- const char *ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* allow fmt==NULL */
- va_start(ap, fmt);
- ret = duk_push_vsprintf(ctx, fmt, ap);
- va_end(ap);
-
- return ret;
-}
-
-DUK_INTERNAL duk_idx_t duk_push_object_helper(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_slot;
- duk_hobject *h;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(prototype_bidx == -1 ||
- (prototype_bidx >= 0 && prototype_bidx < DUK_NUM_BUILTINS));
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- h = duk_hobject_alloc(thr->heap, hobject_flags_and_class);
- if (!h) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- DUK_DDD(DUK_DDDPRINT("created object with flags: 0x%08lx", (unsigned long) h->hdr.h_flags));
-
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_OBJECT(tv_slot, h);
- DUK_HOBJECT_INCREF(thr, h); /* no side effects */
- ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- thr->valstack_top++;
-
- /* object is now reachable */
-
- if (prototype_bidx >= 0) {
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, thr->builtins[prototype_bidx]);
- } else {
- DUK_ASSERT(prototype_bidx == -1);
- DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h) == NULL);
- }
-
- return ret;
-}
-
-DUK_INTERNAL duk_idx_t duk_push_object_helper_proto(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_hobject *proto) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t ret;
- duk_hobject *h;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = duk_push_object_helper(ctx, hobject_flags_and_class, -1);
- h = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h) == NULL);
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, proto);
- return ret;
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_object(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- return duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- DUK_BIDX_OBJECT_PROTOTYPE);
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_array(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_ARRAY_PART |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAY),
- DUK_BIDX_ARRAY_PROTOTYPE);
-
- obj = duk_require_hobject(ctx, ret);
-
- /*
- * An array must have a 'length' property (E5 Section 15.4.5.2).
- * The special array behavior flag must only be enabled once the
- * length property has been added.
- *
- * The internal property must be a number (and preferably a
- * fastint if fastint support is enabled).
- */
-
- duk_push_int(ctx, 0);
-#if defined(DUK_USE_FASTINT)
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(duk_require_tval(ctx, -1)));
-#endif
-
- duk_hobject_define_property_internal(thr,
- obj,
- DUK_HTHREAD_STRING_LENGTH(thr),
- DUK_PROPDESC_FLAGS_W);
- DUK_HOBJECT_SET_EXOTIC_ARRAY(obj);
-
- return ret;
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_thread_raw(duk_context *ctx, duk_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hthread *obj;
- duk_idx_t ret;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- obj = duk_hthread_alloc(thr->heap,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_THREAD |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_THREAD));
- if (!obj) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- obj->state = DUK_HTHREAD_STATE_INACTIVE;
-#if defined(DUK_USE_ROM_STRINGS)
- /* Nothing to initialize, strs[] is in ROM. */
-#else
-#if defined(DUK_USE_HEAPPTR16)
- obj->strs16 = thr->strs16;
-#else
- obj->strs = thr->strs;
-#endif
-#endif
- DUK_DDD(DUK_DDDPRINT("created thread object with flags: 0x%08lx", (unsigned long) obj->obj.hdr.h_flags));
-
- /* make the new thread reachable */
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj);
- DUK_HTHREAD_INCREF(thr, obj);
- ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- thr->valstack_top++;
-
- /* important to do this *after* pushing, to make the thread reachable for gc */
- if (!duk_hthread_init_stacks(thr->heap, obj)) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- /* initialize built-ins - either by copying or creating new ones */
- if (flags & DUK_THREAD_NEW_GLOBAL_ENV) {
- duk_hthread_create_builtin_objects(obj);
- } else {
- duk_hthread_copy_builtin_objects(thr, obj);
- }
-
- /* default prototype (Note: 'obj' must be reachable) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) obj, obj->builtins[DUK_BIDX_THREAD_PROTOTYPE]);
-
- /* Initial stack size satisfies the stack spare constraints so there
- * is no need to require stack here.
- */
- DUK_ASSERT(DUK_VALSTACK_INITIAL_SIZE >=
- DUK_VALSTACK_API_ENTRY_MINIMUM + DUK_VALSTACK_INTERNAL_EXTRA);
-
- return ret;
-}
-
-DUK_INTERNAL duk_idx_t duk_push_compiledfunction(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hcompiledfunction *obj;
- duk_idx_t ret;
- duk_tval *tv_slot;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- /* Template functions are not strictly constructable (they don't
- * have a "prototype" property for instance), so leave the
- * DUK_HOBJECT_FLAG_CONSRUCTABLE flag cleared here.
- */
-
- obj = duk_hcompiledfunction_alloc(thr->heap,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION));
- if (!obj) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- DUK_DDD(DUK_DDDPRINT("created compiled function object with flags: 0x%08lx", (unsigned long) obj->obj.hdr.h_flags));
-
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj);
- DUK_HOBJECT_INCREF(thr, obj);
- ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- thr->valstack_top++;
-
- /* default prototype (Note: 'obj' must be reachable) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
-
- return ret;
-}
-
-DUK_LOCAL duk_idx_t duk__push_c_function_raw(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hnativefunction *obj;
- duk_idx_t ret;
- duk_tval *tv_slot;
- duk_int16_t func_nargs;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
- if (func == NULL) {
- goto api_error;
- }
- if (nargs >= 0 && nargs < DUK_HNATIVEFUNCTION_NARGS_MAX) {
- func_nargs = (duk_int16_t) nargs;
- } else if (nargs == DUK_VARARGS) {
- func_nargs = DUK_HNATIVEFUNCTION_NARGS_VARARGS;
- } else {
- goto api_error;
- }
-
- obj = duk_hnativefunction_alloc(thr->heap, flags);
- if (!obj) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- obj->func = func;
- obj->nargs = func_nargs;
-
- DUK_DDD(DUK_DDDPRINT("created native function object with flags: 0x%08lx, nargs=%ld",
- (unsigned long) obj->obj.hdr.h_flags, (long) obj->nargs));
-
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj);
- DUK_HOBJECT_INCREF(thr, obj);
- ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
- thr->valstack_top++;
-
- /* default prototype (Note: 'obj' must be reachable) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
-
- return ret;
-
- api_error:
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return 0; /* not reached */
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_c_function(duk_context *ctx, duk_c_function func, duk_int_t nargs) {
- duk_uint_t flags;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_CONSTRUCTABLE |
- DUK_HOBJECT_FLAG_NATIVEFUNCTION |
- DUK_HOBJECT_FLAG_NEWENV |
- DUK_HOBJECT_FLAG_STRICT |
- DUK_HOBJECT_FLAG_NOTAIL |
- DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION);
-
- return duk__push_c_function_raw(ctx, func, nargs, flags);
-}
-
-DUK_INTERNAL void duk_push_c_function_noexotic(duk_context *ctx, duk_c_function func, duk_int_t nargs) {
- duk_uint_t flags;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_CONSTRUCTABLE |
- DUK_HOBJECT_FLAG_NATIVEFUNCTION |
- DUK_HOBJECT_FLAG_NEWENV |
- DUK_HOBJECT_FLAG_STRICT |
- DUK_HOBJECT_FLAG_NOTAIL |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION);
-
- (void) duk__push_c_function_raw(ctx, func, nargs, flags);
-}
-
-DUK_INTERNAL void duk_push_c_function_noconstruct_noexotic(duk_context *ctx, duk_c_function func, duk_int_t nargs) {
- duk_uint_t flags;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- flags = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_NATIVEFUNCTION |
- DUK_HOBJECT_FLAG_NEWENV |
- DUK_HOBJECT_FLAG_STRICT |
- DUK_HOBJECT_FLAG_NOTAIL |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION);
-
- (void) duk__push_c_function_raw(ctx, func, nargs, flags);
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_idx_t length, duk_int_t magic) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval tv_tmp;
- duk_small_uint_t lf_flags;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- if (nargs >= DUK_LFUNC_NARGS_MIN && nargs <= DUK_LFUNC_NARGS_MAX) {
- /* as is */
- } else if (nargs == DUK_VARARGS) {
- nargs = DUK_LFUNC_NARGS_VARARGS;
- } else {
- goto api_error;
- }
- if (!(length >= DUK_LFUNC_LENGTH_MIN && length <= DUK_LFUNC_LENGTH_MAX)) {
- goto api_error;
- }
- if (!(magic >= DUK_LFUNC_MAGIC_MIN && magic <= DUK_LFUNC_MAGIC_MAX)) {
- goto api_error;
- }
-
- lf_flags = DUK_LFUNC_FLAGS_PACK(magic, length, nargs);
- DUK_TVAL_SET_LIGHTFUNC(&tv_tmp, func, lf_flags);
- duk_push_tval(ctx, &tv_tmp); /* XXX: direct valstack write */
- DUK_ASSERT(thr->valstack_top != thr->valstack_bottom);
- return ((duk_idx_t) (thr->valstack_top - thr->valstack_bottom)) - 1;
-
- api_error:
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return 0; /* not reached */
-}
-
-DUK_INTERNAL duk_hbufferobject *duk_push_bufferobject_raw(duk_context *ctx, duk_uint_t hobject_flags_and_class, duk_small_int_t prototype_bidx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hbufferobject *obj;
- duk_tval *tv_slot;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(prototype_bidx >= 0);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- obj = duk_hbufferobject_alloc(thr->heap, hobject_flags_and_class);
- if (!obj) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) obj, thr->builtins[prototype_bidx]);
- DUK_ASSERT_HBUFFEROBJECT_VALID(obj);
-
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_OBJECT(tv_slot, (duk_hobject *) obj);
- DUK_HOBJECT_INCREF(thr, obj);
- thr->valstack_top++;
-
- return obj;
-}
-
-/* XXX: There's quite a bit of overlap with buffer creation handling in
- * duk_bi_buffer.c. Look for overlap and refactor.
- */
-#define DUK__PACK_ARGS(classnum,protobidx,elemtype,elemshift,isview) \
- (((classnum) << 24) | ((protobidx) << 16) | ((elemtype) << 8) | ((elemshift) << 4) | (isview))
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-static const duk_uint32_t duk__bufobj_flags_lookup[] = {
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_DUKTAPE_BUFFER */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_NODEJS_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_NODEJS_BUFFER */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_ARRAYBUFFER, DUK_BIDX_ARRAYBUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0), /* DUK_BUFOBJ_ARRAYBUFFER */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_DATAVIEW, DUK_BIDX_DATAVIEW_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_DATAVIEW */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT8ARRAY, DUK_BIDX_INT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT8, 0, 1), /* DUK_BUFOBJ_INT8ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8ARRAY, DUK_BIDX_UINT8ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 1), /* DUK_BUFOBJ_UINT8ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY, DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED, 0, 1), /* DUK_BUFOBJ_UINT8CLAMPEDARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT16ARRAY, DUK_BIDX_INT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT16, 1, 1), /* DUK_BUFOBJ_INT16ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT16ARRAY, DUK_BIDX_UINT16ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT16, 1, 1), /* DUK_BUFOBJ_UINT16ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_INT32ARRAY, DUK_BIDX_INT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_INT32, 2, 1), /* DUK_BUFOBJ_INT32ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_UINT32ARRAY, DUK_BIDX_UINT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT32, 2, 1), /* DUK_BUFOBJ_UINT32ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT32ARRAY, DUK_BIDX_FLOAT32ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT32, 2, 1), /* DUK_BUFOBJ_FLOAT32ARRAY */
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_FLOAT64ARRAY, DUK_BIDX_FLOAT64ARRAY_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_FLOAT64, 3, 1) /* DUK_BUFOBJ_FLOAT64ARRAY */
-};
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-/* Only allow Duktape.Buffer when support disabled. */
-static const duk_uint32_t duk__bufobj_flags_lookup[] = {
- DUK__PACK_ARGS(DUK_HOBJECT_CLASS_BUFFER, DUK_BIDX_BUFFER_PROTOTYPE, DUK_HBUFFEROBJECT_ELEM_UINT8, 0, 0) /* DUK_BUFOBJ_DUKTAPE_BUFFER */
-};
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-#undef DUK__PACK_ARGS
-
-DUK_EXTERNAL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags) {
- duk_hthread *thr;
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
- duk_uint32_t tmp;
- duk_uint_t classnum;
- duk_uint_t protobidx;
- duk_uint_t lookupidx;
- duk_uint_t uint_offset, uint_length, uint_added;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /* The underlying types for offset/length in duk_hbufferobject is
- * duk_uint_t; make sure argument values fit and that offset + length
- * does not wrap.
- */
- uint_offset = (duk_uint_t) byte_offset;
- uint_length = (duk_uint_t) byte_length;
- if (sizeof(duk_size_t) != sizeof(duk_uint_t)) {
- if ((duk_size_t) uint_offset != byte_offset || (duk_size_t) uint_length != byte_length) {
- goto range_error;
- }
- }
- uint_added = uint_offset + uint_length;
- if (uint_added < uint_offset) {
- goto range_error;
- }
- DUK_ASSERT(uint_added >= uint_offset && uint_added >= uint_length);
-
- DUK_ASSERT_DISABLE(flags >= 0); /* flags is unsigned */
- lookupidx = flags & 0x0f; /* 4 low bits */
- if (lookupidx >= sizeof(duk__bufobj_flags_lookup) / sizeof(duk_uint32_t)) {
- goto arg_error;
- }
- tmp = duk__bufobj_flags_lookup[lookupidx];
- classnum = tmp >> 24;
- protobidx = (tmp >> 16) & 0xff;
-
- h_val = duk_require_hbuffer(ctx, idx_buffer);
- DUK_ASSERT(h_val != NULL);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(classnum),
- protobidx);
- DUK_ASSERT(h_bufobj != NULL);
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->offset = uint_offset;
- h_bufobj->length = uint_length;
- h_bufobj->shift = (tmp >> 4) & 0x0f;
- h_bufobj->elem_type = (tmp >> 8) & 0xff;
- h_bufobj->is_view = tmp & 0x0f;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
- /* TypedArray views need an automatic ArrayBuffer which must be
- * provided as .buffer property of the view. Just create a new
- * ArrayBuffer sharing the same underlying buffer.
- */
- if (flags & DUK_BUFOBJ_CREATE_ARRBUF) {
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
- DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
-
- DUK_ASSERT(h_bufobj != NULL);
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->offset = uint_offset;
- h_bufobj->length = uint_length;
- DUK_ASSERT(h_bufobj->shift == 0);
- h_bufobj->elem_type = DUK_HBUFFEROBJECT_ELEM_UINT8;
- DUK_ASSERT(h_bufobj->is_view == 0);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
- duk_compact(ctx, -1);
- }
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
- return;
-
- range_error:
- DUK_ERROR_RANGE(thr, DUK_STR_INVALID_CALL_ARGS);
- return; /* not reached */
-
- arg_error:
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_CALL_ARGS);
- return; /* not reached */
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t ret;
- duk_hobject *proto;
-#ifdef DUK_USE_AUGMENT_ERROR_CREATE
- duk_bool_t noblame_fileline;
-#endif
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_UNREF(filename);
- DUK_UNREF(line);
-
- /* Error code also packs a tracedata related flag. */
-#ifdef DUK_USE_AUGMENT_ERROR_CREATE
- noblame_fileline = err_code & DUK_ERRCODE_FLAG_NOBLAME_FILELINE;
-#endif
- err_code = err_code & (~DUK_ERRCODE_FLAG_NOBLAME_FILELINE);
-
- /* error gets its 'name' from the prototype */
- proto = duk_error_prototype_from_code(thr, err_code);
- ret = duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ERROR),
- proto);
-
- /* ... and its 'message' from an instance property */
- if (fmt) {
- duk_push_vsprintf(ctx, fmt, ap);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC);
- } else {
- /* If no explicit message given, put error code into message field
- * (as a number). This is not fully in keeping with the Ecmascript
- * error model because messages are supposed to be strings (Error
- * constructors use ToString() on their argument). However, it's
- * probably more useful than having a separate 'code' property.
- */
- duk_push_int(ctx, err_code);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC);
- }
-
- /* XXX: .code = err_code disabled, not sure if useful */
-
- /* Creation time error augmentation */
-#ifdef DUK_USE_AUGMENT_ERROR_CREATE
- /* filename may be NULL in which case file/line is not recorded */
- duk_err_augment_error_create(thr, thr, filename, line, noblame_fileline); /* may throw an error */
-#endif
-
- return ret;
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_error_object_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...) {
- va_list ap;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- va_start(ap, fmt);
- ret = duk_push_error_object_va_raw(ctx, err_code, filename, line, fmt, ap);
- va_end(ap);
- return ret;
-}
-
-#if !defined(DUK_USE_VARIADIC_MACROS)
-DUK_EXTERNAL duk_idx_t duk_push_error_object_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...) {
- const char *filename = duk_api_global_filename;
- duk_int_t line = duk_api_global_line;
- va_list ap;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_api_global_filename = NULL;
- duk_api_global_line = 0;
- va_start(ap, fmt);
- ret = duk_push_error_object_va_raw(ctx, err_code, filename, line, fmt, ap);
- va_end(ap);
- return ret;
-}
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-DUK_EXTERNAL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_slot;
- duk_hbuffer *h;
- void *buf_data;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* check stack first */
- if (thr->valstack_top >= thr->valstack_end) {
- DUK_ERROR_API(thr, DUK_STR_PUSH_BEYOND_ALLOC_STACK);
- }
-
- /* Check for maximum buffer length. */
- if (size > DUK_HBUFFER_MAX_BYTELEN) {
- DUK_ERROR_RANGE(thr, DUK_STR_BUFFER_TOO_LONG);
- }
-
- h = duk_hbuffer_alloc(thr->heap, size, flags, &buf_data);
- if (!h) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- tv_slot = thr->valstack_top;
- DUK_TVAL_SET_BUFFER(tv_slot, h);
- DUK_HBUFFER_INCREF(thr, h);
- thr->valstack_top++;
-
- return (void *) buf_data;
-}
-
-DUK_EXTERNAL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t ret;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- ret = (duk_idx_t) (thr->valstack_top - thr->valstack_bottom);
-
- if (ptr == NULL) {
- goto push_undefined;
- }
-
- switch ((int) DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) ptr)) {
- case DUK_HTYPE_STRING:
- duk_push_hstring(ctx, (duk_hstring *) ptr);
- break;
- case DUK_HTYPE_OBJECT:
- duk_push_hobject(ctx, (duk_hobject *) ptr);
- break;
- case DUK_HTYPE_BUFFER:
- duk_push_hbuffer(ctx, (duk_hbuffer *) ptr);
- break;
- default:
- goto push_undefined;
- }
- return ret;
-
- push_undefined:
- duk_push_undefined(ctx);
- return ret;
-}
-
-DUK_INTERNAL duk_idx_t duk_push_object_internal(duk_context *ctx) {
- return duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- -1); /* no prototype */
-}
-
-DUK_INTERNAL void duk_push_hstring(duk_context *ctx, duk_hstring *h) {
- duk_tval tv;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(h != NULL);
- DUK_TVAL_SET_STRING(&tv, h);
- duk_push_tval(ctx, &tv);
-}
-
-DUK_INTERNAL void duk_push_hstring_stridx(duk_context *ctx, duk_small_int_t stridx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
- DUK_ASSERT(stridx >= 0 && stridx < DUK_HEAP_NUM_STRINGS);
- duk_push_hstring(ctx, DUK_HTHREAD_GET_STRING(thr, stridx));
-}
-
-DUK_INTERNAL void duk_push_hobject(duk_context *ctx, duk_hobject *h) {
- duk_tval tv;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(h != NULL);
- DUK_TVAL_SET_OBJECT(&tv, h);
- duk_push_tval(ctx, &tv);
-}
-
-DUK_INTERNAL void duk_push_hbuffer(duk_context *ctx, duk_hbuffer *h) {
- duk_tval tv;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(h != NULL);
- DUK_TVAL_SET_BUFFER(&tv, h);
- duk_push_tval(ctx, &tv);
-}
-
-DUK_INTERNAL void duk_push_hobject_bidx(duk_context *ctx, duk_small_int_t builtin_idx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(builtin_idx >= 0 && builtin_idx < DUK_NUM_BUILTINS);
- DUK_ASSERT(thr->builtins[builtin_idx] != NULL);
- duk_push_hobject(ctx, thr->builtins[builtin_idx]);
-}
-
-/*
- * Poppers
- */
-
-DUK_EXTERNAL void duk_pop_n(duk_context *ctx, duk_idx_t count) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (DUK_UNLIKELY(count < 0)) {
- DUK_ERROR_API(thr, DUK_STR_INVALID_COUNT);
- return;
- }
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- if (DUK_UNLIKELY((duk_size_t) (thr->valstack_top - thr->valstack_bottom) < (duk_size_t) count)) {
- DUK_ERROR_API(thr, DUK_STR_POP_TOO_MANY);
- }
-
- /*
- * Must be very careful here, every DECREF may cause reallocation
- * of our valstack.
- */
-
- /* XXX: inlined DECREF macro would be nice here: no NULL check,
- * refzero queueing but no refzero algorithm run (= no pointer
- * instability), inline code.
- */
-
- /* XXX: optimize loops */
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
- while (count > 0) {
- count--;
- tv = --thr->valstack_top; /* tv points to element just below prev top */
- DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
- }
-#else
- tv = thr->valstack_top;
- while (count > 0) {
- count--;
- tv--;
- DUK_ASSERT(tv >= thr->valstack_bottom);
- DUK_TVAL_SET_UNDEFINED(tv);
- }
- thr->valstack_top = tv;
-#endif
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
-}
-
-/* Popping one element is called so often that when footprint is not an issue,
- * compile a specialized function for it.
- */
-#if defined(DUK_USE_PREFER_SIZE)
-DUK_EXTERNAL void duk_pop(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- duk_pop_n(ctx, 1);
-}
-#else
-DUK_EXTERNAL void duk_pop(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- if (DUK_UNLIKELY(thr->valstack_top == thr->valstack_bottom)) {
- DUK_ERROR_API(thr, DUK_STR_POP_TOO_MANY);
- }
-
- tv = --thr->valstack_top; /* tv points to element just below prev top */
- DUK_ASSERT(tv >= thr->valstack_bottom);
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
-#else
- DUK_TVAL_SET_UNDEFINED(tv);
-#endif
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
-}
-#endif /* !DUK_USE_PREFER_SIZE */
-
-DUK_EXTERNAL void duk_pop_2(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- duk_pop_n(ctx, 2);
-}
-
-DUK_EXTERNAL void duk_pop_3(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
- duk_pop_n(ctx, 3);
-}
-
-/*
- * Error throwing
- */
-
-DUK_EXTERNAL void duk_throw(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
- if (thr->valstack_top == thr->valstack_bottom) {
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- }
-
- /* Errors are augmented when they are created, not when they are
- * thrown or re-thrown. The current error handler, however, runs
- * just before an error is thrown.
- */
-
- /* Sync so that augmentation sees up-to-date activations, NULL
- * thr->ptr_curr_pc so that it's not used if side effects occur
- * in augmentation or longjmp handling.
- */
- duk_hthread_sync_and_null_currpc(thr);
-
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (before throw augment)", (duk_tval *) duk_get_tval(ctx, -1)));
- duk_err_augment_error_throw(thr);
-#endif
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (API): %!dT (after throw augment)", (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_THROW);
-
- /* thr->heap->lj.jmpbuf_ptr is checked by duk_err_longjmp() so we don't
- * need to check that here. If the value is NULL, a panic occurs because
- * we can't return.
- */
-
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
-}
-
-DUK_EXTERNAL void duk_fatal(duk_context *ctx, duk_errcode_t err_code, const char *err_msg) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(thr->heap->fatal_func != NULL);
-
- DUK_D(DUK_DPRINT("fatal error occurred, code %ld, message %s",
- (long) err_code, (const char *) err_msg));
-
- /* fatal_func should be noreturn, but noreturn declarations on function
- * pointers has a very spotty support apparently so it's not currently
- * done.
- */
- thr->heap->fatal_func(ctx, err_code, err_msg);
-
- DUK_PANIC(DUK_ERR_API_ERROR, "fatal handler returned");
-}
-
-DUK_EXTERNAL void duk_error_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk_push_error_object_va_raw(ctx, err_code, filename, line, fmt, ap);
- duk_throw(ctx);
-}
-
-DUK_EXTERNAL void duk_error_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...) {
- va_list ap;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- va_start(ap, fmt);
- duk_push_error_object_va_raw(ctx, err_code, filename, line, fmt, ap);
- va_end(ap);
- duk_throw(ctx);
-}
-
-#if !defined(DUK_USE_VARIADIC_MACROS)
-DUK_EXTERNAL void duk_error_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...) {
- const char *filename;
- duk_int_t line;
- va_list ap;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- filename = duk_api_global_filename;
- line = duk_api_global_line;
- duk_api_global_filename = NULL;
- duk_api_global_line = 0;
-
- va_start(ap, fmt);
- duk_push_error_object_va_raw(ctx, err_code, filename, line, fmt, ap);
- va_end(ap);
- duk_throw(ctx);
-}
-#endif /* DUK_USE_VARIADIC_MACROS */
-
-/*
- * Comparison
- */
-
-DUK_EXTERNAL duk_bool_t duk_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv1, *tv2;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv1 = duk_get_tval(ctx, index1);
- tv2 = duk_get_tval(ctx, index2);
- if ((tv1 == NULL) || (tv2 == NULL)) {
- return 0;
- }
-
- /* Coercion may be needed, the helper handles that by pushing the
- * tagged values to the stack.
- */
- return duk_js_equals(thr, tv1, tv2);
-}
-
-DUK_EXTERNAL duk_bool_t duk_strict_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2) {
- duk_tval *tv1, *tv2;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- tv1 = duk_get_tval(ctx, index1);
- tv2 = duk_get_tval(ctx, index2);
- if ((tv1 == NULL) || (tv2 == NULL)) {
- return 0;
- }
-
- /* No coercions or other side effects, so safe */
- return duk_js_strict_equals(tv1, tv2);
-}
-
-/*
- * instanceof
- */
-
-DUK_EXTERNAL duk_bool_t duk_instanceof(duk_context *ctx, duk_idx_t index1, duk_idx_t index2) {
- duk_tval *tv1, *tv2;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- /* Index validation is strict, which differs from duk_equals().
- * The strict behavior mimics how instanceof itself works, e.g.
- * it is a TypeError if rval is not a -callable- object. It would
- * be somewhat inconsistent if rval would be allowed to be
- * non-existent without a TypeError.
- */
- tv1 = duk_require_tval(ctx, index1);
- DUK_ASSERT(tv1 != NULL);
- tv2 = duk_require_tval(ctx, index2);
- DUK_ASSERT(tv2 != NULL);
-
- return duk_js_instanceof((duk_hthread *) ctx, tv1, tv2);
-}
-
-/*
- * Lightfunc
- */
-
-DUK_INTERNAL void duk_push_lightfunc_name(duk_context *ctx, duk_tval *tv) {
- duk_c_function func;
-
- DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv));
-
- /* Lightfunc name, includes Duktape/C native function pointer, which
- * can often be used to locate the function from a symbol table.
- * The name also includes the 16-bit duk_tval flags field because it
- * includes the magic value. Because a single native function often
- * provides different functionality depending on the magic value, it
- * seems reasonably to include it in the name.
- *
- * On the other hand, a complicated name increases string table
- * pressure in low memory environments (but only when function name
- * is accessed).
- */
-
- func = DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv);
- duk_push_sprintf(ctx, "light_");
- duk_push_string_funcptr(ctx, (duk_uint8_t *) &func, sizeof(func));
- duk_push_sprintf(ctx, "_%04x", (unsigned int) DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv));
- duk_concat(ctx, 3);
-}
-
-DUK_INTERNAL void duk_push_lightfunc_tostring(duk_context *ctx, duk_tval *tv) {
- DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv));
-
- duk_push_string(ctx, "function ");
- duk_push_lightfunc_name(ctx, tv);
- duk_push_string(ctx, "() {\"light\"}");
- duk_concat(ctx, 3);
-}
-
-/*
- * Function pointers
- *
- * Printing function pointers is non-portable, so we do that by hex printing
- * bytes from memory.
- */
-
-DUK_INTERNAL void duk_push_string_funcptr(duk_context *ctx, duk_uint8_t *ptr, duk_size_t sz) {
- duk_uint8_t buf[32 * 2];
- duk_uint8_t *p, *q;
- duk_small_uint_t i;
- duk_small_uint_t t;
-
- DUK_ASSERT(sz <= 32); /* sanity limit for function pointer size */
-
- p = buf;
-#if defined(DUK_USE_INTEGER_LE)
- q = ptr + sz;
-#else
- q = ptr;
-#endif
- for (i = 0; i < sz; i++) {
-#if defined(DUK_USE_INTEGER_LE)
- t = *(--q);
-#else
- t = *(q++);
-#endif
- *p++ = duk_lc_digits[t >> 4];
- *p++ = duk_lc_digits[t & 0x0f];
- }
-
- duk_push_lstring(ctx, (const char *) buf, sz * 2);
-}
-
-#if !defined(DUK_USE_PARANOID_ERRORS)
-/*
- * Push readable string summarizing duk_tval. The operation is side effect
- * free and will only throw from internal errors (e.g. out of memory).
- * This is used by e.g. property access code to summarize a key/base safely,
- * and is not intended to be fast (but small and safe).
- */
-
-#define DUK__READABLE_STRING_MAXCHARS 32
-
-/* String sanitizer which escapes ASCII control characters and a few other
- * ASCII characters, passes Unicode as is, and replaces invalid UTF-8 with
- * question marks. No errors are thrown for any input string, except in out
- * of memory situations.
- */
-DUK_LOCAL void duk__push_hstring_readable_unicode(duk_context *ctx, duk_hstring *h_input) {
- duk_hthread *thr;
- const duk_uint8_t *p, *p_start, *p_end;
- duk_uint8_t buf[DUK_UNICODE_MAX_XUTF8_LENGTH * DUK__READABLE_STRING_MAXCHARS +
- 2 /*quotes*/ + 3 /*periods*/];
- duk_uint8_t *q;
- duk_ucodepoint_t cp;
- duk_small_uint_t nchars;
-
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(h_input != NULL);
- thr = (duk_hthread *) ctx;
-
- p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start;
- q = buf;
-
- nchars = 0;
- *q++ = (duk_uint8_t) DUK_ASC_SINGLEQUOTE;
- for (;;) {
- if (p >= p_end) {
- break;
- }
- if (nchars == DUK__READABLE_STRING_MAXCHARS) {
- *q++ = (duk_uint8_t) DUK_ASC_PERIOD;
- *q++ = (duk_uint8_t) DUK_ASC_PERIOD;
- *q++ = (duk_uint8_t) DUK_ASC_PERIOD;
- break;
- }
- if (duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp)) {
- if (cp < 0x20 || cp == 0x7f || cp == DUK_ASC_SINGLEQUOTE || cp == DUK_ASC_BACKSLASH) {
- DUK_ASSERT(DUK_UNICODE_MAX_XUTF8_LENGTH >= 4); /* estimate is valid */
- DUK_ASSERT((cp >> 4) <= 0x0f);
- *q++ = (duk_uint8_t) DUK_ASC_BACKSLASH;
- *q++ = (duk_uint8_t) DUK_ASC_LC_X;
- *q++ = (duk_uint8_t) duk_lc_digits[cp >> 4];
- *q++ = (duk_uint8_t) duk_lc_digits[cp & 0x0f];
- } else {
- q += duk_unicode_encode_xutf8(cp, q);
- }
- } else {
- p++; /* advance manually */
- *q++ = (duk_uint8_t) DUK_ASC_QUESTION;
- }
- nchars++;
- }
- *q++ = (duk_uint8_t) DUK_ASC_SINGLEQUOTE;
-
- duk_push_lstring(ctx, (const char *) buf, (duk_size_t) (q - buf));
-}
-
-DUK_INTERNAL const char *duk_push_string_tval_readable(duk_context *ctx, duk_tval *tv) {
- duk_hthread *thr;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- if (tv == NULL) {
- duk_push_string(ctx, "none");
- } else {
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_STRING: {
- duk__push_hstring_readable_unicode(ctx, DUK_TVAL_GET_STRING(tv));
- break;
- }
- case DUK_TAG_OBJECT: {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- duk_push_hobject_class_string(ctx, h);
- break;
- }
- case DUK_TAG_BUFFER: {
- /* XXX: Hex encoded, length limited buffer summary here? */
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- duk_push_sprintf(ctx, "[buffer:%ld]", (long) DUK_HBUFFER_GET_SIZE(h));
- break;
- }
- case DUK_TAG_POINTER: {
- /* Surround with parentheses like in JX, ensures NULL pointer
- * is distinguishable from null value ("(null)" vs "null").
- */
- duk_push_tval(ctx, tv);
- duk_push_sprintf(ctx, "(%s)", duk_to_string(ctx, -1));
- duk_remove(ctx, -2);
- break;
- }
- default: {
- duk_push_tval(ctx, tv);
- break;
- }
- }
- }
-
- return duk_to_string(ctx, -1);
-}
-
-DUK_INTERNAL const char *duk_push_string_readable(duk_context *ctx, duk_idx_t index) {
- DUK_ASSERT_CTX_VALID(ctx);
- return duk_push_string_tval_readable(ctx, duk_get_tval(ctx, index));
-}
-#endif /* !DUK_USE_PARANOID_ERRORS */
-
-#undef DUK__CHECK_SPACE
-#undef DUK__PACK_ARGS
-#undef DUK__READABLE_STRING_MAXCHARS
-#line 1 "duk_api_string.c"
-/*
- * String manipulation
- */
-
-/* include removed: duk_internal.h */
-
-DUK_LOCAL void duk__concat_and_join_helper(duk_context *ctx, duk_idx_t count_in, duk_bool_t is_join) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uint_t count;
- duk_uint_t i;
- duk_size_t idx;
- duk_size_t len;
- duk_hstring *h;
- duk_uint8_t *buf;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- if (DUK_UNLIKELY(count_in <= 0)) {
- if (count_in < 0) {
- DUK_ERROR_API(thr, DUK_STR_INVALID_COUNT);
- return;
- }
- DUK_ASSERT(count_in == 0);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
- return;
- }
- count = (duk_uint_t) count_in;
-
- if (is_join) {
- duk_size_t t1, t2, limit;
- h = duk_to_hstring(ctx, -((duk_idx_t) count) - 1);
- DUK_ASSERT(h != NULL);
-
- /* A bit tricky overflow test, see doc/code-issues.rst. */
- t1 = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h);
- t2 = (duk_size_t) (count - 1);
- limit = (duk_size_t) DUK_HSTRING_MAX_BYTELEN;
- if (DUK_UNLIKELY(t2 != 0 && t1 > limit / t2)) {
- /* Combined size of separators already overflows */
- goto error_overflow;
- }
- len = (duk_size_t) (t1 * t2);
- } else {
- len = (duk_size_t) 0;
- }
-
- for (i = count; i >= 1; i--) {
- duk_size_t new_len;
- duk_to_string(ctx, -((duk_idx_t) i));
- h = duk_require_hstring(ctx, -((duk_idx_t) i));
- new_len = len + (duk_size_t) DUK_HSTRING_GET_BYTELEN(h);
-
- /* Impose a string maximum length, need to handle overflow
- * correctly.
- */
- if (new_len < len || /* wrapped */
- new_len > (duk_size_t) DUK_HSTRING_MAX_BYTELEN) {
- goto error_overflow;
- }
- len = new_len;
- }
-
- DUK_DDD(DUK_DDDPRINT("join/concat %lu strings, total length %lu bytes",
- (unsigned long) count, (unsigned long) len));
-
- /* use stack allocated buffer to ensure reachability in errors (e.g. intern error) */
- buf = (duk_uint8_t *) duk_push_fixed_buffer(ctx, len);
- DUK_ASSERT(buf != NULL);
-
- /* [... (sep) str1 str2 ... strN buf] */
-
- idx = 0;
- for (i = count; i >= 1; i--) {
- if (is_join && i != count) {
- h = duk_require_hstring(ctx, -((duk_idx_t) count) - 2); /* extra -1 for buffer */
- DUK_MEMCPY(buf + idx, DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h));
- idx += DUK_HSTRING_GET_BYTELEN(h);
- }
- h = duk_require_hstring(ctx, -((duk_idx_t) i) - 1); /* extra -1 for buffer */
- DUK_MEMCPY(buf + idx, DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h));
- idx += DUK_HSTRING_GET_BYTELEN(h);
- }
-
- DUK_ASSERT(idx == len);
-
- /* [... (sep) str1 str2 ... strN buf] */
-
- /* get rid of the strings early to minimize memory use before intern */
-
- if (is_join) {
- duk_replace(ctx, -((duk_idx_t) count) - 2); /* overwrite sep */
- duk_pop_n(ctx, count);
- } else {
- duk_replace(ctx, -((duk_idx_t) count) - 1); /* overwrite str1 */
- duk_pop_n(ctx, count-1);
- }
-
- /* [... buf] */
-
- (void) duk_to_string(ctx, -1);
-
- /* [... res] */
- return;
-
- error_overflow:
- DUK_ERROR_RANGE(thr, DUK_STR_CONCAT_RESULT_TOO_LONG);
-}
-
-DUK_EXTERNAL void duk_concat(duk_context *ctx, duk_idx_t count) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__concat_and_join_helper(ctx, count, 0 /*is_join*/);
-}
-
-DUK_EXTERNAL void duk_join(duk_context *ctx, duk_idx_t count) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- duk__concat_and_join_helper(ctx, count, 1 /*is_join*/);
-}
-
-/* XXX: could map/decode be unified with duk_unicode_support.c code?
- * Case conversion needs also the character surroundings though.
- */
-
-DUK_EXTERNAL void duk_decode_string(duk_context *ctx, duk_idx_t index, duk_decode_char_function callback, void *udata) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_input;
- const duk_uint8_t *p, *p_start, *p_end;
- duk_codepoint_t cp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h_input = duk_require_hstring(ctx, index);
- DUK_ASSERT(h_input != NULL);
-
- p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start;
-
- for (;;) {
- if (p >= p_end) {
- break;
- }
- cp = (int) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end);
- callback(udata, cp);
- }
-}
-
-DUK_EXTERNAL void duk_map_string(duk_context *ctx, duk_idx_t index, duk_map_char_function callback, void *udata) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_input;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
- const duk_uint8_t *p, *p_start, *p_end;
- duk_codepoint_t cp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_normalize_index(ctx, index);
-
- h_input = duk_require_hstring(ctx, index);
- DUK_ASSERT(h_input != NULL);
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input)); /* reasonable output estimate */
-
- p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start;
-
- for (;;) {
- /* XXX: could write output in chunks with fewer ensure calls,
- * but relative benefit would be small here.
- */
-
- if (p >= p_end) {
- break;
- }
- cp = (int) duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end);
- cp = callback(udata, cp);
-
- DUK_BW_WRITE_ENSURE_XUTF8(thr, bw, cp);
- }
-
- DUK_BW_COMPACT(thr, bw);
- duk_to_string(ctx, -1);
- duk_replace(ctx, index);
-}
-
-DUK_EXTERNAL void duk_substring(duk_context *ctx, duk_idx_t index, duk_size_t start_offset, duk_size_t end_offset) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h;
- duk_hstring *res;
- duk_size_t start_byte_offset;
- duk_size_t end_byte_offset;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
- h = duk_require_hstring(ctx, index);
- DUK_ASSERT(h != NULL);
-
- if (end_offset >= DUK_HSTRING_GET_CHARLEN(h)) {
- end_offset = DUK_HSTRING_GET_CHARLEN(h);
- }
- if (start_offset > end_offset) {
- start_offset = end_offset;
- }
-
- DUK_ASSERT_DISABLE(start_offset >= 0);
- DUK_ASSERT(start_offset <= end_offset && start_offset <= DUK_HSTRING_GET_CHARLEN(h));
- DUK_ASSERT_DISABLE(end_offset >= 0);
- DUK_ASSERT(end_offset >= start_offset && end_offset <= DUK_HSTRING_GET_CHARLEN(h));
-
- /* guaranteed by string limits */
- DUK_ASSERT(start_offset <= DUK_UINT32_MAX);
- DUK_ASSERT(end_offset <= DUK_UINT32_MAX);
-
- start_byte_offset = (duk_size_t) duk_heap_strcache_offset_char2byte(thr, h, (duk_uint_fast32_t) start_offset);
- end_byte_offset = (duk_size_t) duk_heap_strcache_offset_char2byte(thr, h, (duk_uint_fast32_t) end_offset);
-
- DUK_ASSERT(end_byte_offset >= start_byte_offset);
- DUK_ASSERT(end_byte_offset - start_byte_offset <= DUK_UINT32_MAX); /* guaranteed by string limits */
-
- /* no size check is necessary */
- res = duk_heap_string_intern_checked(thr,
- DUK_HSTRING_GET_DATA(h) + start_byte_offset,
- (duk_uint32_t) (end_byte_offset - start_byte_offset));
-
- duk_push_hstring(ctx, res);
- duk_replace(ctx, index);
-}
-
-/* XXX: this is quite clunky. Add Unicode helpers to scan backwards and
- * forwards with a callback to process codepoints?
- */
-DUK_EXTERNAL void duk_trim(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h;
- const duk_uint8_t *p, *p_start, *p_end, *p_tmp1, *p_tmp2; /* pointers for scanning */
- const duk_uint8_t *q_start, *q_end; /* start (incl) and end (excl) of trimmed part */
- duk_codepoint_t cp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- index = duk_require_normalize_index(ctx, index);
- h = duk_require_hstring(ctx, index);
- DUK_ASSERT(h != NULL);
-
- p_start = DUK_HSTRING_GET_DATA(h);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h);
-
- p = p_start;
- while (p < p_end) {
- p_tmp1 = p;
- cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p_tmp1, p_start, p_end);
- if (!(duk_unicode_is_whitespace(cp) || duk_unicode_is_line_terminator(cp))) {
- break;
- }
- p = p_tmp1;
- }
- q_start = p;
- if (p == p_end) {
- /* entire string is whitespace */
- q_end = p;
- goto scan_done;
- }
-
- p = p_end;
- while (p > p_start) {
- p_tmp1 = p;
- while (p > p_start) {
- p--;
- if (((*p) & 0xc0) != 0x80) {
- break;
- }
- }
- p_tmp2 = p;
-
- cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &p_tmp2, p_start, p_end);
- if (!(duk_unicode_is_whitespace(cp) || duk_unicode_is_line_terminator(cp))) {
- p = p_tmp1;
- break;
- }
- }
- q_end = p;
-
- scan_done:
- /* This may happen when forward and backward scanning disagree
- * (possible for non-extended-UTF-8 strings).
- */
- if (q_end < q_start) {
- q_end = q_start;
- }
-
- DUK_ASSERT(q_start >= p_start && q_start <= p_end);
- DUK_ASSERT(q_end >= p_start && q_end <= p_end);
- DUK_ASSERT(q_end >= q_start);
-
- DUK_DDD(DUK_DDDPRINT("trim: p_start=%p, p_end=%p, q_start=%p, q_end=%p",
- (const void *) p_start, (const void *) p_end,
- (const void *) q_start, (const void *) q_end));
-
- if (q_start == p_start && q_end == p_end) {
- DUK_DDD(DUK_DDDPRINT("nothing was trimmed: avoid interning (hashing etc)"));
- return;
- }
-
- duk_push_lstring(ctx, (const char *) q_start, (duk_size_t) (q_end - q_start));
- duk_replace(ctx, index);
-}
-
-DUK_EXTERNAL duk_codepoint_t duk_char_code_at(duk_context *ctx, duk_idx_t index, duk_size_t char_offset) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h;
- duk_ucodepoint_t cp;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h = duk_require_hstring(ctx, index);
- DUK_ASSERT(h != NULL);
-
- DUK_ASSERT_DISABLE(char_offset >= 0); /* always true, arg is unsigned */
- if (char_offset >= DUK_HSTRING_GET_CHARLEN(h)) {
- return 0;
- }
-
- DUK_ASSERT(char_offset <= DUK_UINT_MAX); /* guaranteed by string limits */
- cp = duk_hstring_char_code_at_raw(thr, h, (duk_uint_t) char_offset);
- return (duk_codepoint_t) cp;
-}
-#line 1 "duk_api_var.c"
-/*
- * Variable access
- */
-
-/* include removed: duk_internal.h */
-
-DUK_EXTERNAL void duk_get_var(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
- duk_hstring *h_varname;
- duk_small_int_t throw_flag = 1; /* always throw ReferenceError for unresolvable */
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h_varname = duk_require_hstring(ctx, -1); /* XXX: tostring? */
- DUK_ASSERT(h_varname != NULL);
-
- act = duk_hthread_get_current_activation(thr);
- if (act) {
- (void) duk_js_getvar_activation(thr, act, h_varname, throw_flag); /* -> [ ... varname val this ] */
- } else {
- /* Outside any activation -> look up from global. */
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL_ENV] != NULL);
- (void) duk_js_getvar_envrec(thr, thr->builtins[DUK_BIDX_GLOBAL_ENV], h_varname, throw_flag);
- }
-
- /* [ ... varname val this ] (because throw_flag == 1, always resolved) */
-
- duk_pop(ctx);
- duk_remove(ctx, -2);
-
- /* [ ... val ] */
-
- /* Return value would be pointless: because throw_flag==1, we always
- * throw if the identifier doesn't resolve.
- */
- return;
-}
-
-DUK_EXTERNAL void duk_put_var(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
- duk_hstring *h_varname;
- duk_tval *tv_val;
- duk_small_int_t throw_flag;
-
- DUK_ASSERT_CTX_VALID(ctx);
-
- h_varname = duk_require_hstring(ctx, -2); /* XXX: tostring? */
- DUK_ASSERT(h_varname != NULL);
-
- tv_val = duk_require_tval(ctx, -1);
-
- throw_flag = duk_is_strict_call(ctx);
-
- act = duk_hthread_get_current_activation(thr);
- if (act) {
- duk_js_putvar_activation(thr, act, h_varname, tv_val, throw_flag); /* -> [ ... varname val this ] */
- } else {
- /* Outside any activation -> put to global. */
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL_ENV] != NULL);
- duk_js_putvar_envrec(thr, thr->builtins[DUK_BIDX_GLOBAL_ENV], h_varname, tv_val, throw_flag);
- }
-
- /* [ ... varname val ] */
-
- duk_pop_2(ctx);
-
- /* [ ... ] */
-
- return;
-}
-
-DUK_EXTERNAL duk_bool_t duk_del_var(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_ERROR_UNIMPLEMENTED_DEFMSG((duk_hthread *) ctx);
- return 0;
-}
-
-DUK_EXTERNAL duk_bool_t duk_has_var(duk_context *ctx) {
- DUK_ASSERT_CTX_VALID(ctx);
-
- DUK_ERROR_UNIMPLEMENTED_DEFMSG((duk_hthread *) ctx);
- return 0;
-}
-#line 1 "duk_bi_array.c"
-/*
- * Array built-ins
- *
- * Note that most Array built-ins are intentionally generic and work even
- * when the 'this' binding is not an Array instance. To ensure this,
- * Array algorithms do not assume "magical" Array behavior for the "length"
- * property, for instance.
- *
- * XXX: the "Throw" flag should be set for (almost?) all [[Put]] and
- * [[Delete]] operations, but it's currently false throughout. Go through
- * all put/delete cases and check throw flag use. Need a new API primitive
- * which allows throws flag to be specified.
- *
- * XXX: array lengths above 2G won't work reliably. There are many places
- * where one needs a full signed 32-bit range ([-0xffffffff, 0xffffffff],
- * i.e. -33- bits). Although array 'length' cannot be written to be outside
- * the unsigned 32-bit range (E5.1 Section 15.4.5.1 throws a RangeError if so)
- * some intermediate values may be above 0xffffffff and this may not be always
- * correctly handled now (duk_uint32_t is not enough for all algorithms).
- *
- * For instance, push() can legitimately write entries beyond length 0xffffffff
- * and cause a RangeError only at the end. To do this properly, the current
- * push() implementation tracks the array index using a 'double' instead of a
- * duk_uint32_t (which is somewhat awkward). See test-bi-array-push-maxlen.js.
- *
- * On using "put" vs. "def" prop
- * =============================
- *
- * Code below must be careful to use the appropriate primitive as it matters
- * for compliance. When using "put" there may be inherited properties in
- * Array.prototype which cause side effects when values are written. When
- * using "define" there are no such side effects, and many test262 test cases
- * check for this (for real world code, such side effects are very rare).
- * Both "put" and "define" are used in the E5.1 specification; as a rule,
- * "put" is used when modifying an existing array (or a non-array 'this'
- * binding) and "define" for setting values into a fresh result array.
- *
- * Also note that Array instance 'length' should be writable, but not
- * enumerable and definitely not configurable: even Duktape code internally
- * assumes that an Array instance will always have a 'length' property.
- * Preventing deletion of the property is critical.
- */
-
-/* include removed: duk_internal.h */
-
-/* Perform an intermediate join when this many elements have been pushed
- * on the value stack.
- */
-#define DUK__ARRAY_MID_JOIN_LIMIT 4096
-
-/* Shared entry code for many Array built-ins. Note that length is left
- * on stack (it could be popped, but that's not necessary).
- */
-DUK_LOCAL duk_uint32_t duk__push_this_obj_len_u32(duk_context *ctx) {
- duk_uint32_t len;
-
- (void) duk_push_this_coercible_to_object(ctx);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_LENGTH);
- len = duk_to_uint32(ctx, -1);
-
- /* -> [ ... ToObject(this) ToUint32(length) ] */
- return len;
-}
-
-DUK_LOCAL duk_uint32_t duk__push_this_obj_len_u32_limited(duk_context *ctx) {
- /* Range limited to [0, 0x7fffffff] range, i.e. range that can be
- * represented with duk_int32_t. Use this when the method doesn't
- * handle the full 32-bit unsigned range correctly.
- */
- duk_uint32_t ret = duk__push_this_obj_len_u32(ctx);
- if (DUK_UNLIKELY(ret >= 0x80000000UL)) {
- DUK_ERROR_RANGE((duk_hthread *) ctx, DUK_STR_ARRAY_LENGTH_OVER_2G);
- }
- return ret;
-}
-
-/*
- * Constructor
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_constructor(duk_context *ctx) {
- duk_idx_t nargs;
- duk_double_t d;
- duk_uint32_t len;
- duk_idx_t i;
-
- nargs = duk_get_top(ctx);
- duk_push_array(ctx);
-
- if (nargs == 1 && duk_is_number(ctx, 0)) {
- /* XXX: expensive check (also shared elsewhere - so add a shared internal API call?) */
- d = duk_get_number(ctx, 0);
- len = duk_to_uint32(ctx, 0);
- if (((duk_double_t) len) != d) {
- return DUK_RET_RANGE_ERROR;
- }
-
- /* XXX: if 'len' is low, may want to ensure array part is kept:
- * the caller is likely to want a dense array.
- */
- duk_push_u32(ctx, len);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W); /* [ ToUint32(len) array ToUint32(len) ] -> [ ToUint32(len) array ] */
- return 1;
- }
-
- /* XXX: optimize by creating array into correct size directly, and
- * operating on the array part directly; values can be memcpy()'d from
- * value stack directly as long as refcounts are increased.
- */
- for (i = 0; i < nargs; i++) {
- duk_dup(ctx, i);
- duk_xdef_prop_index_wec(ctx, -2, (duk_uarridx_t) i);
- }
-
- duk_push_u32(ctx, (duk_uint32_t) nargs);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W);
- return 1;
-}
-
-/*
- * isArray()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_constructor_is_array(duk_context *ctx) {
- duk_hobject *h;
-
- h = duk_get_hobject_with_class(ctx, 0, DUK_HOBJECT_CLASS_ARRAY);
- duk_push_boolean(ctx, (h != NULL));
- return 1;
-}
-
-/*
- * toString()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_to_string(duk_context *ctx) {
- (void) duk_push_this_coercible_to_object(ctx);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_JOIN);
-
- /* [ ... this func ] */
- if (!duk_is_callable(ctx, -1)) {
- /* Fall back to the initial (original) Object.toString(). We don't
- * currently have pointers to the built-in functions, only the top
- * level global objects (like "Array") so this is now done in a bit
- * of a hacky manner. It would be cleaner to push the (original)
- * function and use duk_call_method().
- */
-
- /* XXX: 'this' will be ToObject() coerced twice, which is incorrect
- * but should have no visible side effects.
- */
- DUK_DDD(DUK_DDDPRINT("this.join is not callable, fall back to (original) Object.toString"));
- duk_set_top(ctx, 0);
- return duk_bi_object_prototype_to_string(ctx); /* has access to 'this' binding */
- }
-
- /* [ ... this func ] */
-
- duk_insert(ctx, -2);
-
- /* [ ... func this ] */
-
- DUK_DDD(DUK_DDDPRINT("calling: func=%!iT, this=%!iT",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_call_method(ctx, 0);
-
- return 1;
-}
-
-/*
- * concat()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_concat(duk_context *ctx) {
- duk_idx_t i, n;
- duk_uarridx_t idx, idx_last;
- duk_uarridx_t j, len;
- duk_hobject *h;
-
- /* XXX: the insert here is a bit expensive if there are a lot of items.
- * It could also be special cased in the outermost for loop quite easily
- * (as the element is dup()'d anyway).
- */
-
- (void) duk_push_this_coercible_to_object(ctx);
- duk_insert(ctx, 0);
- n = duk_get_top(ctx);
- duk_push_array(ctx); /* -> [ ToObject(this) item1 ... itemN arr ] */
-
- /* NOTE: The Array special behaviors are NOT invoked by duk_xdef_prop_index()
- * (which differs from the official algorithm). If no error is thrown, this
- * doesn't matter as the length is updated at the end. However, if an error
- * is thrown, the length will be unset. That shouldn't matter because the
- * caller won't get a reference to the intermediate value.
- */
-
- idx = 0;
- idx_last = 0;
- for (i = 0; i < n; i++) {
- DUK_ASSERT_TOP(ctx, n + 1);
-
- /* [ ToObject(this) item1 ... itemN arr ] */
-
- duk_dup(ctx, i);
- h = duk_get_hobject_with_class(ctx, -1, DUK_HOBJECT_CLASS_ARRAY);
- if (!h) {
- duk_xdef_prop_index_wec(ctx, -2, idx++);
- idx_last = idx;
- continue;
- }
-
- /* [ ToObject(this) item1 ... itemN arr item(i) ] */
-
- /* XXX: an array can have length higher than 32 bits; this is not handled
- * correctly now.
- */
- len = (duk_uarridx_t) duk_get_length(ctx, -1);
- for (j = 0; j < len; j++) {
- if (duk_get_prop_index(ctx, -1, j)) {
- /* [ ToObject(this) item1 ... itemN arr item(i) item(i)[j] ] */
- duk_xdef_prop_index_wec(ctx, -3, idx++);
- idx_last = idx;
- } else {
- idx++;
- duk_pop(ctx);
-#if defined(DUK_USE_NONSTD_ARRAY_CONCAT_TRAILER)
- /* According to E5.1 Section 15.4.4.4 nonexistent trailing
- * elements do not affect 'length' of the result. Test262
- * and other engines disagree, so update idx_last here too.
- */
- idx_last = idx;
-#else
- /* Strict standard behavior, ignore trailing elements for
- * result 'length'.
- */
-#endif
- }
- }
- duk_pop(ctx);
- }
-
- /* The E5.1 Section 15.4.4.4 algorithm doesn't set the length explicitly
- * in the end, but because we're operating with an internal value which
- * is known to be an array, this should be equivalent.
- */
- duk_push_uarridx(ctx, idx_last);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W);
-
- DUK_ASSERT_TOP(ctx, n + 1);
- return 1;
-}
-
-/*
- * join(), toLocaleString()
- *
- * Note: checking valstack is necessary, but only in the per-element loop.
- *
- * Note: the trivial approach of pushing all the elements on the value stack
- * and then calling duk_join() fails when the array contains a large number
- * of elements. This problem can't be offloaded to duk_join() because the
- * elements to join must be handled here and have special handling. Current
- * approach is to do intermediate joins with very large number of elements.
- * There is no fancy handling; the prefix gets re-joined multiple times.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_join_shared(duk_context *ctx) {
- duk_uint32_t len, count;
- duk_uint32_t idx;
- duk_small_int_t to_locale_string = duk_get_current_magic(ctx);
- duk_idx_t valstack_required;
-
- /* For join(), nargs is 1. For toLocaleString(), nargs is 0 and
- * setting the top essentially pushes an undefined to the stack,
- * thus defaulting to a comma separator.
- */
- duk_set_top(ctx, 1);
- if (duk_is_undefined(ctx, 0)) {
- duk_pop(ctx);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_COMMA);
- } else {
- duk_to_string(ctx, 0);
- }
-
- len = duk__push_this_obj_len_u32(ctx);
-
- /* [ sep ToObject(this) len ] */
-
- DUK_DDD(DUK_DDDPRINT("sep=%!T, this=%!T, len=%lu",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (unsigned long) len));
-
- /* The extra (+4) is tight. */
- valstack_required = (len >= DUK__ARRAY_MID_JOIN_LIMIT ?
- DUK__ARRAY_MID_JOIN_LIMIT : len) + 4;
- duk_require_stack(ctx, valstack_required);
-
- duk_dup(ctx, 0);
-
- /* [ sep ToObject(this) len sep ] */
-
- count = 0;
- idx = 0;
- for (;;) {
- if (count >= DUK__ARRAY_MID_JOIN_LIMIT || /* intermediate join to avoid valstack overflow */
- idx >= len) { /* end of loop (careful with len==0) */
- /* [ sep ToObject(this) len sep str0 ... str(count-1) ] */
- DUK_DDD(DUK_DDDPRINT("mid/final join, count=%ld, idx=%ld, len=%ld",
- (long) count, (long) idx, (long) len));
- duk_join(ctx, (duk_idx_t) count); /* -> [ sep ToObject(this) len str ] */
- duk_dup(ctx, 0); /* -> [ sep ToObject(this) len str sep ] */
- duk_insert(ctx, -2); /* -> [ sep ToObject(this) len sep str ] */
- count = 1;
- }
- if (idx >= len) {
- /* if true, the stack already contains the final result */
- break;
- }
-
- duk_get_prop_index(ctx, 1, (duk_uarridx_t) idx);
- if (duk_is_null_or_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
- } else {
- if (to_locale_string) {
- duk_to_object(ctx, -1);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_TO_LOCALE_STRING);
- duk_insert(ctx, -2); /* -> [ ... toLocaleString ToObject(val) ] */
- duk_call_method(ctx, 0);
- duk_to_string(ctx, -1);
- } else {
- duk_to_string(ctx, -1);
- }
- }
-
- count++;
- idx++;
- }
-
- /* [ sep ToObject(this) len sep result ] */
-
- return 1;
-}
-
-/*
- * pop(), push()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_pop(duk_context *ctx) {
- duk_uint32_t len;
- duk_uint32_t idx;
-
- DUK_ASSERT_TOP(ctx, 0);
- len = duk__push_this_obj_len_u32(ctx);
- if (len == 0) {
- duk_push_int(ctx, 0);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LENGTH);
- return 0;
- }
- idx = len - 1;
-
- duk_get_prop_index(ctx, 0, (duk_uarridx_t) idx);
- duk_del_prop_index(ctx, 0, (duk_uarridx_t) idx);
- duk_push_u32(ctx, idx);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LENGTH);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_push(duk_context *ctx) {
- /* Note: 'this' is not necessarily an Array object. The push()
- * algorithm is supposed to work for other kinds of objects too,
- * so the algorithm has e.g. an explicit update for the 'length'
- * property which is normally "magical" in arrays.
- */
-
- duk_uint32_t len;
- duk_idx_t i, n;
-
- n = duk_get_top(ctx);
- len = duk__push_this_obj_len_u32(ctx);
-
- /* [ arg1 ... argN obj length ] */
-
- /* Technically Array.prototype.push() can create an Array with length
- * longer than 2^32-1, i.e. outside the 32-bit range. The final length
- * is *not* wrapped to 32 bits in the specification.
- *
- * This implementation tracks length with a uint32 because it's much
- * more practical.
- *
- * See: test-bi-array-push-maxlen.js.
- */
-
- if (len + (duk_uint32_t) n < len) {
- DUK_D(DUK_DPRINT("Array.prototype.push() would go beyond 32-bit length, throw"));
- return DUK_RET_RANGE_ERROR;
- }
-
- for (i = 0; i < n; i++) {
- duk_dup(ctx, i);
- duk_put_prop_index(ctx, -3, len + i);
- }
- len += n;
-
- duk_push_u32(ctx, len);
- duk_dup_top(ctx);
- duk_put_prop_stridx(ctx, -4, DUK_STRIDX_LENGTH);
-
- /* [ arg1 ... argN obj length new_length ] */
- return 1;
-}
-
-/*
- * sort()
- *
- * Currently qsort with random pivot. This is now really, really slow,
- * because there is no fast path for array parts.
- *
- * Signed indices are used because qsort() leaves and degenerate cases
- * may use a negative offset.
- */
-
-DUK_LOCAL duk_small_int_t duk__array_sort_compare(duk_context *ctx, duk_int_t idx1, duk_int_t idx2) {
- duk_bool_t have1, have2;
- duk_bool_t undef1, undef2;
- duk_small_int_t ret;
- duk_idx_t idx_obj = 1; /* fixed offsets in valstack */
- duk_idx_t idx_fn = 0;
- duk_hstring *h1, *h2;
-
- /* Fast exit if indices are identical. This is valid for a non-existent property,
- * for an undefined value, and almost always for ToString() coerced comparison of
- * arbitrary values (corner cases where this is not the case include e.g. a an
- * object with varying ToString() coercion).
- *
- * The specification does not prohibit "caching" of values read from the array, so
- * assuming equality for comparing an index with itself falls into the category of
- * "caching".
- *
- * Also, compareFn may be inconsistent, so skipping a call to compareFn here may
- * have an effect on the final result. The specification does not require any
- * specific behavior for inconsistent compare functions, so again, this fast path
- * is OK.
- */
-
- if (idx1 == idx2) {
- DUK_DDD(DUK_DDDPRINT("duk__array_sort_compare: idx1=%ld, idx2=%ld -> indices identical, quick exit",
- (long) idx1, (long) idx2));
- return 0;
- }
-
- have1 = duk_get_prop_index(ctx, idx_obj, (duk_uarridx_t) idx1);
- have2 = duk_get_prop_index(ctx, idx_obj, (duk_uarridx_t) idx2);
-
- DUK_DDD(DUK_DDDPRINT("duk__array_sort_compare: idx1=%ld, idx2=%ld, have1=%ld, have2=%ld, val1=%!T, val2=%!T",
- (long) idx1, (long) idx2, (long) have1, (long) have2,
- (duk_tval *) duk_get_tval(ctx, -2), (duk_tval *) duk_get_tval(ctx, -1)));
-
- if (have1) {
- if (have2) {
- ;
- } else {
- ret = -1;
- goto pop_ret;
- }
- } else {
- if (have2) {
- ret = 1;
- goto pop_ret;
- } else {
- ret = 0;
- goto pop_ret;
- }
- }
-
- undef1 = duk_is_undefined(ctx, -2);
- undef2 = duk_is_undefined(ctx, -1);
- if (undef1) {
- if (undef2) {
- ret = 0;
- goto pop_ret;
- } else {
- ret = 1;
- goto pop_ret;
- }
- } else {
- if (undef2) {
- ret = -1;
- goto pop_ret;
- } else {
- ;
- }
- }
-
- if (!duk_is_undefined(ctx, idx_fn)) {
- duk_double_t d;
-
- /* no need to check callable; duk_call() will do that */
- duk_dup(ctx, idx_fn); /* -> [ ... x y fn ] */
- duk_insert(ctx, -3); /* -> [ ... fn x y ] */
- duk_call(ctx, 2); /* -> [ ... res ] */
-
- /* The specification is a bit vague what to do if the return
- * value is not a number. Other implementations seem to
- * tolerate non-numbers but e.g. V8 won't apparently do a
- * ToNumber().
- */
-
- /* XXX: best behavior for real world compatibility? */
-
- d = duk_to_number(ctx, -1);
- if (d < 0.0) {
- ret = -1;
- } else if (d > 0.0) {
- ret = 1;
- } else {
- ret = 0;
- }
-
- duk_pop(ctx);
- DUK_DDD(DUK_DDDPRINT("-> result %ld (from comparefn, after coercion)", (long) ret));
- return ret;
- }
-
- /* string compare is the default (a bit oddly) */
-
- h1 = duk_to_hstring(ctx, -2);
- h2 = duk_to_hstring(ctx, -1);
- DUK_ASSERT(h1 != NULL);
- DUK_ASSERT(h2 != NULL);
-
- ret = duk_js_string_compare(h1, h2); /* retval is directly usable */
- goto pop_ret;
-
- pop_ret:
- duk_pop_2(ctx);
- DUK_DDD(DUK_DDDPRINT("-> result %ld", (long) ret));
- return ret;
-}
-
-DUK_LOCAL void duk__array_sort_swap(duk_context *ctx, duk_int_t l, duk_int_t r) {
- duk_bool_t have_l, have_r;
- duk_idx_t idx_obj = 1; /* fixed offset in valstack */
-
- if (l == r) {
- return;
- }
-
- /* swap elements; deal with non-existent elements correctly */
- have_l = duk_get_prop_index(ctx, idx_obj, (duk_uarridx_t) l);
- have_r = duk_get_prop_index(ctx, idx_obj, (duk_uarridx_t) r);
-
- if (have_r) {
- /* right exists, [[Put]] regardless whether or not left exists */
- duk_put_prop_index(ctx, idx_obj, (duk_uarridx_t) l);
- } else {
- duk_del_prop_index(ctx, idx_obj, (duk_uarridx_t) l);
- duk_pop(ctx);
- }
-
- if (have_l) {
- duk_put_prop_index(ctx, idx_obj, (duk_uarridx_t) r);
- } else {
- duk_del_prop_index(ctx, idx_obj, (duk_uarridx_t) r);
- duk_pop(ctx);
- }
-}
-
-#if defined(DUK_USE_DDDPRINT)
-/* Debug print which visualizes the qsort partitioning process. */
-DUK_LOCAL void duk__debuglog_qsort_state(duk_context *ctx, duk_int_t lo, duk_int_t hi, duk_int_t pivot) {
- char buf[4096];
- char *ptr = buf;
- duk_int_t i, n;
- n = (duk_int_t) duk_get_length(ctx, 1);
- if (n > 4000) {
- n = 4000;
- }
- *ptr++ = '[';
- for (i = 0; i < n; i++) {
- if (i == pivot) {
- *ptr++ = '|';
- } else if (i == lo) {
- *ptr++ = '<';
- } else if (i == hi) {
- *ptr++ = '>';
- } else if (i >= lo && i <= hi) {
- *ptr++ = '-';
- } else {
- *ptr++ = ' ';
- }
- }
- *ptr++ = ']';
- *ptr++ = '\0';
-
- DUK_DDD(DUK_DDDPRINT("%s (lo=%ld, hi=%ld, pivot=%ld)",
- (const char *) buf, (long) lo, (long) hi, (long) pivot));
-}
-#endif
-
-DUK_LOCAL void duk__array_qsort(duk_context *ctx, duk_int_t lo, duk_int_t hi) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_int_t p, l, r;
-
- /* The lo/hi indices may be crossed and hi < 0 is possible at entry. */
-
- DUK_DDD(DUK_DDDPRINT("duk__array_qsort: lo=%ld, hi=%ld, obj=%!T",
- (long) lo, (long) hi, (duk_tval *) duk_get_tval(ctx, 1)));
-
- DUK_ASSERT_TOP(ctx, 3);
-
- /* In some cases it may be that lo > hi, or hi < 0; these
- * degenerate cases happen e.g. for empty arrays, and in
- * recursion leaves.
- */
-
- /* trivial cases */
- if (hi - lo < 1) {
- DUK_DDD(DUK_DDDPRINT("degenerate case, return immediately"));
- return;
- }
- DUK_ASSERT(hi > lo);
- DUK_ASSERT(hi - lo + 1 >= 2);
-
- /* randomized pivot selection */
- p = lo + (duk_util_tinyrandom_get_bits(thr, 30) % (hi - lo + 1)); /* rnd in [lo,hi] */
- DUK_ASSERT(p >= lo && p <= hi);
- DUK_DDD(DUK_DDDPRINT("lo=%ld, hi=%ld, chose pivot p=%ld",
- (long) lo, (long) hi, (long) p));
-
- /* move pivot out of the way */
- duk__array_sort_swap(ctx, p, lo);
- p = lo;
- DUK_DDD(DUK_DDDPRINT("pivot moved out of the way: %!T", (duk_tval *) duk_get_tval(ctx, 1)));
-
- l = lo + 1;
- r = hi;
- for (;;) {
- /* find elements to swap */
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("left scan: l=%ld, r=%ld, p=%ld",
- (long) l, (long) r, (long) p));
- if (l >= hi) {
- break;
- }
- if (duk__array_sort_compare(ctx, l, p) >= 0) { /* !(l < p) */
- break;
- }
- l++;
- }
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("right scan: l=%ld, r=%ld, p=%ld",
- (long) l, (long) r, (long) p));
- if (r <= lo) {
- break;
- }
- if (duk__array_sort_compare(ctx, p, r) >= 0) { /* !(p < r) */
- break;
- }
- r--;
- }
- if (l >= r) {
- goto done;
- }
- DUK_ASSERT(l < r);
-
- DUK_DDD(DUK_DDDPRINT("swap %ld and %ld", (long) l, (long) r));
-
- duk__array_sort_swap(ctx, l, r);
-
- DUK_DDD(DUK_DDDPRINT("after swap: %!T", (duk_tval *) duk_get_tval(ctx, 1)));
- l++;
- r--;
- }
- done:
- /* Note that 'l' and 'r' may cross, i.e. r < l */
- DUK_ASSERT(l >= lo && l <= hi);
- DUK_ASSERT(r >= lo && r <= hi);
-
- /* XXX: there's no explicit recursion bound here now. For the average
- * qsort recursion depth O(log n) that's not really necessary: e.g. for
- * 2**32 recursion depth would be about 32 which is OK. However, qsort
- * worst case recursion depth is O(n) which may be a problem.
- */
-
- /* move pivot to its final place */
- DUK_DDD(DUK_DDDPRINT("before final pivot swap: %!T", (duk_tval *) duk_get_tval(ctx, 1)));
- duk__array_sort_swap(ctx, lo, r);
-
-#if defined(DUK_USE_DDDPRINT)
- duk__debuglog_qsort_state(ctx, lo, hi, r);
-#endif
-
- DUK_DDD(DUK_DDDPRINT("recurse: pivot=%ld, obj=%!T", (long) r, (duk_tval *) duk_get_tval(ctx, 1)));
- duk__array_qsort(ctx, lo, r - 1);
- duk__array_qsort(ctx, r + 1, hi);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_sort(duk_context *ctx) {
- duk_uint32_t len;
-
- /* XXX: len >= 0x80000000 won't work below because a signed type
- * is needed by qsort.
- */
- len = duk__push_this_obj_len_u32_limited(ctx);
-
- /* stack[0] = compareFn
- * stack[1] = ToObject(this)
- * stack[2] = ToUint32(length)
- */
-
- if (len > 0) {
- /* avoid degenerate cases, so that (len - 1) won't underflow */
- duk__array_qsort(ctx, (duk_int_t) 0, (duk_int_t) (len - 1));
- }
-
- DUK_ASSERT_TOP(ctx, 3);
- duk_pop(ctx);
- return 1; /* return ToObject(this) */
-}
-
-/*
- * splice()
- */
-
-/* XXX: this compiles to over 500 bytes now, even without special handling
- * for an array part. Uses signed ints so does not handle full array range correctly.
- */
-
-/* XXX: can shift() / unshift() use the same helper?
- * shift() is (close to?) <--> splice(0, 1)
- * unshift is (close to?) <--> splice(0, 0, [items])?
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_splice(duk_context *ctx) {
- duk_idx_t nargs;
- duk_uint32_t len;
- duk_bool_t have_delcount;
- duk_int_t item_count;
- duk_int_t act_start;
- duk_int_t del_count;
- duk_int_t i, n;
-
- DUK_UNREF(have_delcount);
-
- nargs = duk_get_top(ctx);
- if (nargs < 2) {
- duk_set_top(ctx, 2);
- nargs = 2;
- have_delcount = 0;
- } else {
- have_delcount = 1;
- }
-
- /* XXX: len >= 0x80000000 won't work below because we need to be
- * able to represent -len.
- */
- len = duk__push_this_obj_len_u32_limited(ctx);
-
- act_start = duk_to_int_clamped(ctx, 0, -((duk_int_t) len), (duk_int_t) len);
- if (act_start < 0) {
- act_start = len + act_start;
- }
- DUK_ASSERT(act_start >= 0 && act_start <= (duk_int_t) len);
-
-#ifdef DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
- if (have_delcount) {
-#endif
- del_count = duk_to_int_clamped(ctx, 1, 0, len - act_start);
-#ifdef DUK_USE_NONSTD_ARRAY_SPLICE_DELCOUNT
- } else {
- /* E5.1 standard behavior when deleteCount is not given would be
- * to treat it just like if 'undefined' was given, which coerces
- * ultimately to 0. Real world behavior is to splice to the end
- * of array, see test-bi-array-proto-splice-no-delcount.js.
- */
- del_count = len - act_start;
- }
-#endif
-
- DUK_ASSERT(nargs >= 2);
- item_count = (duk_int_t) (nargs - 2);
-
- DUK_ASSERT(del_count >= 0 && del_count <= (duk_int_t) len - act_start);
- DUK_ASSERT(del_count + act_start <= (duk_int_t) len);
-
- /* For now, restrict result array into 32-bit length range. */
- if (((duk_double_t) len) - ((duk_double_t) del_count) + ((duk_double_t) item_count) > (duk_double_t) DUK_UINT32_MAX) {
- DUK_D(DUK_DPRINT("Array.prototype.splice() would go beyond 32-bit length, throw"));
- return DUK_RET_RANGE_ERROR;
- }
-
- duk_push_array(ctx);
-
- /* stack[0] = start
- * stack[1] = deleteCount
- * stack[2...nargs-1] = items
- * stack[nargs] = ToObject(this) -3
- * stack[nargs+1] = ToUint32(length) -2
- * stack[nargs+2] = result array -1
- */
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
-
- /* Step 9: copy elements-to-be-deleted into the result array */
-
- for (i = 0; i < del_count; i++) {
- if (duk_get_prop_index(ctx, -3, (duk_uarridx_t) (act_start + i))) {
- duk_xdef_prop_index_wec(ctx, -2, i); /* throw flag irrelevant (false in std alg) */
- } else {
- duk_pop(ctx);
- }
- }
- duk_push_u32(ctx, (duk_uint32_t) del_count);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W);
-
- /* Steps 12 and 13: reorganize elements to make room for itemCount elements */
-
- if (item_count < del_count) {
- /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 1
- * -> [ A B F G H ] (conceptual intermediate step)
- * -> [ A B . F G H ] (placeholder marked)
- * [ A B C F G H ] (actual result at this point, C will be replaced)
- */
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
-
- n = len - del_count;
- for (i = act_start; i < n; i++) {
- if (duk_get_prop_index(ctx, -3, (duk_uarridx_t) (i + del_count))) {
- duk_put_prop_index(ctx, -4, (duk_uarridx_t) (i + item_count));
- } else {
- duk_pop(ctx);
- duk_del_prop_index(ctx, -3, (duk_uarridx_t) (i + item_count));
- }
- }
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
-
- /* loop iterator init and limit changed from standard algorithm */
- n = len - del_count + item_count;
- for (i = len - 1; i >= n; i--) {
- duk_del_prop_index(ctx, -3, (duk_uarridx_t) i);
- }
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
- } else if (item_count > del_count) {
- /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 4
- * -> [ A B F G H ] (conceptual intermediate step)
- * -> [ A B . . . . F G H ] (placeholder marked)
- * [ A B C D E F F G H ] (actual result at this point)
- */
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
-
- /* loop iterator init and limit changed from standard algorithm */
- for (i = len - del_count - 1; i >= act_start; i--) {
- if (duk_get_prop_index(ctx, -3, (duk_uarridx_t) (i + del_count))) {
- duk_put_prop_index(ctx, -4, (duk_uarridx_t) (i + item_count));
- } else {
- duk_pop(ctx);
- duk_del_prop_index(ctx, -3, (duk_uarridx_t) (i + item_count));
- }
- }
-
- DUK_ASSERT_TOP(ctx, nargs + 3);
- } else {
- /* [ A B C D E F G H ] rel_index = 2, del_count 3, item count 3
- * -> [ A B F G H ] (conceptual intermediate step)
- * -> [ A B . . . F G H ] (placeholder marked)
- * [ A B C D E F G H ] (actual result at this point)
- */
- }
- DUK_ASSERT_TOP(ctx, nargs + 3);
-
- /* Step 15: insert itemCount elements into the hole made above */
-
- for (i = 0; i < item_count; i++) {
- duk_dup(ctx, i + 2); /* args start at index 2 */
- duk_put_prop_index(ctx, -4, (duk_uarridx_t) (act_start + i));
- }
-
- /* Step 16: update length; note that the final length may be above 32 bit range
- * (but we checked above that this isn't the case here)
- */
-
- duk_push_u32(ctx, len - del_count + item_count);
- duk_put_prop_stridx(ctx, -4, DUK_STRIDX_LENGTH);
-
- /* result array is already at the top of stack */
- DUK_ASSERT_TOP(ctx, nargs + 3);
- return 1;
-}
-
-/*
- * reverse()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_reverse(duk_context *ctx) {
- duk_uint32_t len;
- duk_uint32_t middle;
- duk_uint32_t lower, upper;
- duk_bool_t have_lower, have_upper;
-
- len = duk__push_this_obj_len_u32(ctx);
- middle = len / 2;
-
- /* If len <= 1, middle will be 0 and for-loop bails out
- * immediately (0 < 0 -> false).
- */
-
- for (lower = 0; lower < middle; lower++) {
- DUK_ASSERT(len >= 2);
- DUK_ASSERT_TOP(ctx, 2);
-
- DUK_ASSERT(len >= lower + 1);
- upper = len - lower - 1;
-
- have_lower = duk_get_prop_index(ctx, -2, (duk_uarridx_t) lower);
- have_upper = duk_get_prop_index(ctx, -3, (duk_uarridx_t) upper);
-
- /* [ ToObject(this) ToUint32(length) lowerValue upperValue ] */
-
- if (have_upper) {
- duk_put_prop_index(ctx, -4, (duk_uarridx_t) lower);
- } else {
- duk_del_prop_index(ctx, -4, (duk_uarridx_t) lower);
- duk_pop(ctx);
- }
-
- if (have_lower) {
- duk_put_prop_index(ctx, -3, (duk_uarridx_t) upper);
- } else {
- duk_del_prop_index(ctx, -3, (duk_uarridx_t) upper);
- duk_pop(ctx);
- }
-
- DUK_ASSERT_TOP(ctx, 2);
- }
-
- DUK_ASSERT_TOP(ctx, 2);
- duk_pop(ctx); /* -> [ ToObject(this) ] */
- return 1;
-}
-
-/*
- * slice()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_slice(duk_context *ctx) {
- duk_uint32_t len;
- duk_int_t start, end;
- duk_int_t i;
- duk_uarridx_t idx;
- duk_uint32_t res_length = 0;
-
- /* XXX: len >= 0x80000000 won't work below because we need to be
- * able to represent -len.
- */
- len = duk__push_this_obj_len_u32_limited(ctx);
- duk_push_array(ctx);
-
- /* stack[0] = start
- * stack[1] = end
- * stack[2] = ToObject(this)
- * stack[3] = ToUint32(length)
- * stack[4] = result array
- */
-
- start = duk_to_int_clamped(ctx, 0, -((duk_int_t) len), (duk_int_t) len);
- if (start < 0) {
- start = len + start;
- }
- /* XXX: could duk_is_undefined() provide defaulting undefined to 'len'
- * (the upper limit)?
- */
- if (duk_is_undefined(ctx, 1)) {
- end = len;
- } else {
- end = duk_to_int_clamped(ctx, 1, -((duk_int_t) len), (duk_int_t) len);
- if (end < 0) {
- end = len + end;
- }
- }
- DUK_ASSERT(start >= 0 && (duk_uint32_t) start <= len);
- DUK_ASSERT(end >= 0 && (duk_uint32_t) end <= len);
-
- idx = 0;
- for (i = start; i < end; i++) {
- DUK_ASSERT_TOP(ctx, 5);
- if (duk_get_prop_index(ctx, 2, (duk_uarridx_t) i)) {
- duk_xdef_prop_index_wec(ctx, 4, idx);
- res_length = idx + 1;
- } else {
- duk_pop(ctx);
- }
- idx++;
- DUK_ASSERT_TOP(ctx, 5);
- }
-
- duk_push_u32(ctx, res_length);
- duk_xdef_prop_stridx(ctx, 4, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W);
-
- DUK_ASSERT_TOP(ctx, 5);
- return 1;
-}
-
-/*
- * shift()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_shift(duk_context *ctx) {
- duk_uint32_t len;
- duk_uint32_t i;
-
- len = duk__push_this_obj_len_u32(ctx);
- if (len == 0) {
- duk_push_int(ctx, 0);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LENGTH);
- return 0;
- }
-
- duk_get_prop_index(ctx, 0, 0);
-
- /* stack[0] = object (this)
- * stack[1] = ToUint32(length)
- * stack[2] = elem at index 0 (retval)
- */
-
- for (i = 1; i < len; i++) {
- DUK_ASSERT_TOP(ctx, 3);
- if (duk_get_prop_index(ctx, 0, (duk_uarridx_t) i)) {
- /* fromPresent = true */
- duk_put_prop_index(ctx, 0, (duk_uarridx_t) (i - 1));
- } else {
- /* fromPresent = false */
- duk_del_prop_index(ctx, 0, (duk_uarridx_t) (i - 1));
- duk_pop(ctx);
- }
- }
- duk_del_prop_index(ctx, 0, (duk_uarridx_t) (len - 1));
-
- duk_push_u32(ctx, (duk_uint32_t) (len - 1));
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LENGTH);
-
- DUK_ASSERT_TOP(ctx, 3);
- return 1;
-}
-
-/*
- * unshift()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_unshift(duk_context *ctx) {
- duk_idx_t nargs;
- duk_uint32_t len;
- duk_uint32_t i;
-
- nargs = duk_get_top(ctx);
- len = duk__push_this_obj_len_u32(ctx);
-
- /* stack[0...nargs-1] = unshift args (vararg)
- * stack[nargs] = ToObject(this)
- * stack[nargs+1] = ToUint32(length)
- */
-
- DUK_ASSERT_TOP(ctx, nargs + 2);
-
- /* Note: unshift() may operate on indices above unsigned 32-bit range
- * and the final length may be >= 2**32. However, we restrict the
- * final result to 32-bit range for practicality.
- */
-
- if (len + (duk_uint32_t) nargs < len) {
- DUK_D(DUK_DPRINT("Array.prototype.unshift() would go beyond 32-bit length, throw"));
- return DUK_RET_RANGE_ERROR;
- }
-
- i = len;
- while (i > 0) {
- DUK_ASSERT_TOP(ctx, nargs + 2);
- i--;
- /* k+argCount-1; note that may be above 32-bit range */
-
- if (duk_get_prop_index(ctx, -2, (duk_uarridx_t) i)) {
- /* fromPresent = true */
- /* [ ... ToObject(this) ToUint32(length) val ] */
- duk_put_prop_index(ctx, -3, (duk_uarridx_t) (i + nargs)); /* -> [ ... ToObject(this) ToUint32(length) ] */
- } else {
- /* fromPresent = false */
- /* [ ... ToObject(this) ToUint32(length) val ] */
- duk_pop(ctx);
- duk_del_prop_index(ctx, -2, (duk_uarridx_t) (i + nargs)); /* -> [ ... ToObject(this) ToUint32(length) ] */
- }
- DUK_ASSERT_TOP(ctx, nargs + 2);
- }
-
- for (i = 0; i < (duk_uint32_t) nargs; i++) {
- DUK_ASSERT_TOP(ctx, nargs + 2);
- duk_dup(ctx, i); /* -> [ ... ToObject(this) ToUint32(length) arg[i] ] */
- duk_put_prop_index(ctx, -3, (duk_uarridx_t) i);
- DUK_ASSERT_TOP(ctx, nargs + 2);
- }
-
- DUK_ASSERT_TOP(ctx, nargs + 2);
- duk_push_u32(ctx, len + nargs);
- duk_dup_top(ctx); /* -> [ ... ToObject(this) ToUint32(length) final_len final_len ] */
- duk_put_prop_stridx(ctx, -4, DUK_STRIDX_LENGTH);
- return 1;
-}
-
-/*
- * indexOf(), lastIndexOf()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_indexof_shared(duk_context *ctx) {
- duk_idx_t nargs;
- duk_int_t i, len;
- duk_int_t from_index;
- duk_small_int_t idx_step = duk_get_current_magic(ctx); /* idx_step is +1 for indexOf, -1 for lastIndexOf */
-
- /* lastIndexOf() needs to be a vararg function because we must distinguish
- * between an undefined fromIndex and a "not given" fromIndex; indexOf() is
- * made vararg for symmetry although it doesn't strictly need to be.
- */
-
- nargs = duk_get_top(ctx);
- duk_set_top(ctx, 2);
-
- /* XXX: must be able to represent -len */
- len = (duk_int_t) duk__push_this_obj_len_u32_limited(ctx);
- if (len == 0) {
- goto not_found;
- }
-
- /* Index clamping is a bit tricky, we must ensure that we'll only iterate
- * through elements that exist and that the specific requirements from E5.1
- * Sections 15.4.4.14 and 15.4.4.15 are fulfilled; especially:
- *
- * - indexOf: clamp to [-len,len], negative handling -> [0,len],
- * if clamped result is len, for-loop bails out immediately
- *
- * - lastIndexOf: clamp to [-len-1, len-1], negative handling -> [-1, len-1],
- * if clamped result is -1, for-loop bails out immediately
- *
- * If fromIndex is not given, ToInteger(undefined) = 0, which is correct
- * for indexOf() but incorrect for lastIndexOf(). Hence special handling,
- * and why lastIndexOf() needs to be a vararg function.
- */
-
- if (nargs >= 2) {
- /* indexOf: clamp fromIndex to [-len, len]
- * (if fromIndex == len, for-loop terminates directly)
- *
- * lastIndexOf: clamp fromIndex to [-len - 1, len - 1]
- * (if clamped to -len-1 -> fromIndex becomes -1, terminates for-loop directly)
- */
- from_index = duk_to_int_clamped(ctx,
- 1,
- (idx_step > 0 ? -len : -len - 1),
- (idx_step > 0 ? len : len - 1));
- if (from_index < 0) {
- /* for lastIndexOf, result may be -1 (mark immediate termination) */
- from_index = len + from_index;
- }
- } else {
- /* for indexOf, ToInteger(undefined) would be 0, i.e. correct, but
- * handle both indexOf and lastIndexOf specially here.
- */
- if (idx_step > 0) {
- from_index = 0;
- } else {
- from_index = len - 1;
- }
- }
-
- /* stack[0] = searchElement
- * stack[1] = fromIndex
- * stack[2] = object
- * stack[3] = length (not needed, but not popped above)
- */
-
- for (i = from_index; i >= 0 && i < len; i += idx_step) {
- DUK_ASSERT_TOP(ctx, 4);
-
- if (duk_get_prop_index(ctx, 2, (duk_uarridx_t) i)) {
- DUK_ASSERT_TOP(ctx, 5);
- if (duk_strict_equals(ctx, 0, 4)) {
- duk_push_int(ctx, i);
- return 1;
- }
- }
-
- duk_pop(ctx);
- }
-
- not_found:
- duk_push_int(ctx, -1);
- return 1;
-}
-
-/*
- * every(), some(), forEach(), map(), filter()
- */
-
-#define DUK__ITER_EVERY 0
-#define DUK__ITER_SOME 1
-#define DUK__ITER_FOREACH 2
-#define DUK__ITER_MAP 3
-#define DUK__ITER_FILTER 4
-
-/* XXX: This helper is a bit awkward because the handling for the different iteration
- * callers is quite different. This now compiles to a bit less than 500 bytes, so with
- * 5 callers the net result is about 100 bytes / caller.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_iter_shared(duk_context *ctx) {
- duk_uint32_t len;
- duk_uint32_t i;
- duk_uarridx_t k;
- duk_bool_t bval;
- duk_small_int_t iter_type = duk_get_current_magic(ctx);
- duk_uint32_t res_length = 0;
-
- /* each call this helper serves has nargs==2 */
- DUK_ASSERT_TOP(ctx, 2);
-
- len = duk__push_this_obj_len_u32(ctx);
- duk_require_callable(ctx, 0);
- /* if thisArg not supplied, behave as if undefined was supplied */
-
- if (iter_type == DUK__ITER_MAP || iter_type == DUK__ITER_FILTER) {
- duk_push_array(ctx);
- } else {
- duk_push_undefined(ctx);
- }
-
- /* stack[0] = callback
- * stack[1] = thisArg
- * stack[2] = object
- * stack[3] = ToUint32(length) (unused, but avoid unnecessary pop)
- * stack[4] = result array (or undefined)
- */
-
- k = 0; /* result index for filter() */
- for (i = 0; i < len; i++) {
- DUK_ASSERT_TOP(ctx, 5);
-
- if (!duk_get_prop_index(ctx, 2, (duk_uarridx_t) i)) {
-#if defined(DUK_USE_NONSTD_ARRAY_MAP_TRAILER)
- /* Real world behavior for map(): trailing non-existent
- * elements don't invoke the user callback, but are still
- * counted towards result 'length'.
- */
- if (iter_type == DUK__ITER_MAP) {
- res_length = i + 1;
- }
-#else
- /* Standard behavior for map(): trailing non-existent
- * elements don't invoke the user callback and are not
- * counted towards result 'length'.
- */
-#endif
- duk_pop(ctx);
- continue;
- }
-
- /* The original value needs to be preserved for filter(), hence
- * this funny order. We can't re-get the value because of side
- * effects.
- */
-
- duk_dup(ctx, 0);
- duk_dup(ctx, 1);
- duk_dup(ctx, -3);
- duk_push_u32(ctx, i);
- duk_dup(ctx, 2); /* [ ... val callback thisArg val i obj ] */
- duk_call_method(ctx, 3); /* -> [ ... val retval ] */
-
- switch (iter_type) {
- case DUK__ITER_EVERY:
- bval = duk_to_boolean(ctx, -1);
- if (!bval) {
- /* stack top contains 'false' */
- return 1;
- }
- break;
- case DUK__ITER_SOME:
- bval = duk_to_boolean(ctx, -1);
- if (bval) {
- /* stack top contains 'true' */
- return 1;
- }
- break;
- case DUK__ITER_FOREACH:
- /* nop */
- break;
- case DUK__ITER_MAP:
- duk_dup(ctx, -1);
- duk_xdef_prop_index_wec(ctx, 4, (duk_uarridx_t) i); /* retval to result[i] */
- res_length = i + 1;
- break;
- case DUK__ITER_FILTER:
- bval = duk_to_boolean(ctx, -1);
- if (bval) {
- duk_dup(ctx, -2); /* orig value */
- duk_xdef_prop_index_wec(ctx, 4, (duk_uarridx_t) k);
- k++;
- res_length = k;
- }
- break;
- default:
- DUK_UNREACHABLE();
- break;
- }
- duk_pop_2(ctx);
-
- DUK_ASSERT_TOP(ctx, 5);
- }
-
- switch (iter_type) {
- case DUK__ITER_EVERY:
- duk_push_true(ctx);
- break;
- case DUK__ITER_SOME:
- duk_push_false(ctx);
- break;
- case DUK__ITER_FOREACH:
- duk_push_undefined(ctx);
- break;
- case DUK__ITER_MAP:
- case DUK__ITER_FILTER:
- DUK_ASSERT_TOP(ctx, 5);
- DUK_ASSERT(duk_is_array(ctx, -1)); /* topmost element is the result array already */
- duk_push_u32(ctx, res_length);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_W);
- break;
- default:
- DUK_UNREACHABLE();
- break;
- }
-
- return 1;
-}
-
-/*
- * reduce(), reduceRight()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_array_prototype_reduce_shared(duk_context *ctx) {
- duk_idx_t nargs;
- duk_bool_t have_acc;
- duk_uint32_t i, len;
- duk_small_int_t idx_step = duk_get_current_magic(ctx); /* idx_step is +1 for reduce, -1 for reduceRight */
-
- /* We're a varargs function because we need to detect whether
- * initialValue was given or not.
- */
- nargs = duk_get_top(ctx);
- DUK_DDD(DUK_DDDPRINT("nargs=%ld", (long) nargs));
-
- duk_set_top(ctx, 2);
- len = duk__push_this_obj_len_u32(ctx);
- if (!duk_is_callable(ctx, 0)) {
- goto type_error;
- }
-
- /* stack[0] = callback fn
- * stack[1] = initialValue
- * stack[2] = object (coerced this)
- * stack[3] = length (not needed, but not popped above)
- * stack[4] = accumulator
- */
-
- have_acc = 0;
- if (nargs >= 2) {
- duk_dup(ctx, 1);
- have_acc = 1;
- }
- DUK_DDD(DUK_DDDPRINT("have_acc=%ld, acc=%!T",
- (long) have_acc, (duk_tval *) duk_get_tval(ctx, 3)));
-
- /* For len == 0, i is initialized to len - 1 which underflows.
- * The condition (i < len) will then exit the for-loop on the
- * first round which is correct. Similarly, loop termination
- * happens by i underflowing.
- */
-
- for (i = (idx_step >= 0 ? 0 : len - 1);
- i < len; /* i >= 0 would always be true */
- i += idx_step) {
- DUK_DDD(DUK_DDDPRINT("i=%ld, len=%ld, have_acc=%ld, top=%ld, acc=%!T",
- (long) i, (long) len, (long) have_acc,
- (long) duk_get_top(ctx),
- (duk_tval *) duk_get_tval(ctx, 4)));
-
- DUK_ASSERT((have_acc && duk_get_top(ctx) == 5) ||
- (!have_acc && duk_get_top(ctx) == 4));
-
- if (!duk_has_prop_index(ctx, 2, (duk_uarridx_t) i)) {
- continue;
- }
-
- if (!have_acc) {
- DUK_ASSERT_TOP(ctx, 4);
- duk_get_prop_index(ctx, 2, (duk_uarridx_t) i);
- have_acc = 1;
- DUK_ASSERT_TOP(ctx, 5);
- } else {
- DUK_ASSERT_TOP(ctx, 5);
- duk_dup(ctx, 0);
- duk_dup(ctx, 4);
- duk_get_prop_index(ctx, 2, (duk_uarridx_t) i);
- duk_push_u32(ctx, i);
- duk_dup(ctx, 2);
- DUK_DDD(DUK_DDDPRINT("calling reduce function: func=%!T, prev=%!T, curr=%!T, idx=%!T, obj=%!T",
- (duk_tval *) duk_get_tval(ctx, -5), (duk_tval *) duk_get_tval(ctx, -4),
- (duk_tval *) duk_get_tval(ctx, -3), (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_call(ctx, 4);
- DUK_DDD(DUK_DDDPRINT("-> result: %!T", (duk_tval *) duk_get_tval(ctx, -1)));
- duk_replace(ctx, 4);
- DUK_ASSERT_TOP(ctx, 5);
- }
- }
-
- if (!have_acc) {
- goto type_error;
- }
-
- DUK_ASSERT_TOP(ctx, 5);
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-
-#undef DUK__ARRAY_MID_JOIN_LIMIT
-
-#undef DUK__ITER_EVERY
-#undef DUK__ITER_SOME
-#undef DUK__ITER_FOREACH
-#undef DUK__ITER_MAP
-#undef DUK__ITER_FILTER
-#line 1 "duk_bi_boolean.c"
-/*
- * Boolean built-ins
- */
-
-/* include removed: duk_internal.h */
-
-/* Shared helper to provide toString() and valueOf(). Checks 'this', gets
- * the primitive value to stack top, and optionally coerces with ToString().
- */
-DUK_INTERNAL duk_ret_t duk_bi_boolean_prototype_tostring_shared(duk_context *ctx) {
- duk_tval *tv;
- duk_hobject *h;
- duk_small_int_t coerce_tostring = duk_get_current_magic(ctx);
-
- /* XXX: there is room to use a shared helper here, many built-ins
- * check the 'this' type, and if it's an object, check its class,
- * then get its internal value, etc.
- */
-
- duk_push_this(ctx);
- tv = duk_get_tval(ctx, -1);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_BOOLEAN(tv)) {
- goto type_ok;
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_BOOLEAN) {
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- DUK_ASSERT(duk_is_boolean(ctx, -1));
- goto type_ok;
- }
- }
-
- return DUK_RET_TYPE_ERROR;
-
- type_ok:
- if (coerce_tostring) {
- duk_to_string(ctx, -1);
- }
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_boolean_constructor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h_this;
-
- DUK_UNREF(thr);
-
- duk_to_boolean(ctx, 0);
-
- if (duk_is_constructor_call(ctx)) {
- /* XXX: helper; rely on Boolean.prototype as being non-writable, non-configurable */
- duk_push_this(ctx);
- h_this = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_this != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_this) == thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE]);
-
- DUK_HOBJECT_SET_CLASS_NUMBER(h_this, DUK_HOBJECT_CLASS_BOOLEAN);
-
- duk_dup(ctx, 0); /* -> [ val obj val ] */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE); /* XXX: proper flags? */
- } /* unbalanced stack */
-
- return 1;
-}
-#line 1 "duk_bi_buffer.c"
-/*
- * Duktape.Buffer, Node.js Buffer, and Khronos/ES6 TypedArray built-ins
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Misc helpers
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Map DUK_HBUFFEROBJECT_ELEM_xxx to duk_hobject class number.
- * Sync with duk_hbufferobject.h and duk_hobject.h.
- */
-static const duk_uint8_t duk__buffer_class_from_elemtype[9] = {
- DUK_HOBJECT_CLASS_UINT8ARRAY,
- DUK_HOBJECT_CLASS_UINT8CLAMPEDARRAY,
- DUK_HOBJECT_CLASS_INT8ARRAY,
- DUK_HOBJECT_CLASS_UINT16ARRAY,
- DUK_HOBJECT_CLASS_INT16ARRAY,
- DUK_HOBJECT_CLASS_UINT32ARRAY,
- DUK_HOBJECT_CLASS_INT32ARRAY,
- DUK_HOBJECT_CLASS_FLOAT32ARRAY,
- DUK_HOBJECT_CLASS_FLOAT64ARRAY
-};
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Map DUK_HBUFFEROBJECT_ELEM_xxx to prototype object built-in index.
- * Sync with duk_hbufferobject.h.
- */
-static const duk_uint8_t duk__buffer_proto_from_elemtype[9] = {
- DUK_BIDX_UINT8ARRAY_PROTOTYPE,
- DUK_BIDX_UINT8CLAMPEDARRAY_PROTOTYPE,
- DUK_BIDX_INT8ARRAY_PROTOTYPE,
- DUK_BIDX_UINT16ARRAY_PROTOTYPE,
- DUK_BIDX_INT16ARRAY_PROTOTYPE,
- DUK_BIDX_UINT32ARRAY_PROTOTYPE,
- DUK_BIDX_INT32ARRAY_PROTOTYPE,
- DUK_BIDX_FLOAT32ARRAY_PROTOTYPE,
- DUK_BIDX_FLOAT64ARRAY_PROTOTYPE
-};
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Map DUK__FLX_xxx to byte size.
- */
-static const duk_uint8_t duk__buffer_nbytes_from_fldtype[6] = {
- 1, /* DUK__FLD_8BIT */
- 2, /* DUK__FLD_16BIT */
- 4, /* DUK__FLD_32BIT */
- 4, /* DUK__FLD_FLOAT */
- 8, /* DUK__FLD_DOUBLE */
- 0 /* DUK__FLD_VARINT; not relevant here */
-};
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Bitfield for each DUK_HBUFFEROBJECT_ELEM_xxx indicating which element types
- * are compatible with a blind byte copy for the TypedArray set() method (also
- * used for TypedArray constructor). Array index is target buffer elem type,
- * bitfield indicates compatible source types. The types must have same byte
- * size and they must be coercion compatible.
- */
-static duk_uint16_t duk__buffer_elemtype_copy_compatible[9] = {
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_UINT8 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8) |
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT8),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED
- * Note: INT8 is -not- copy compatible, e.g. -1 would coerce to 0x00.
- */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8) |
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_INT8 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8) |
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT8),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_UINT16 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT16) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT16),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_INT16 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT16) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT16),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_UINT32 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT32) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT32),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_INT32 */
- (1U << DUK_HBUFFEROBJECT_ELEM_UINT32) |
- (1U << DUK_HBUFFEROBJECT_ELEM_INT32),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_FLOAT32 */
- (1U << DUK_HBUFFEROBJECT_ELEM_FLOAT32),
-
- /* xxx -> DUK_HBUFFEROBJECT_ELEM_FLOAT64 */
- (1U << DUK_HBUFFEROBJECT_ELEM_FLOAT64)
-};
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Shared helper. */
-DUK_LOCAL duk_hbufferobject *duk__getrequire_bufobj_this(duk_context *ctx, duk_bool_t throw_flag) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_hbufferobject *h_this;
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
-
- tv = duk_get_borrowed_this_tval(ctx);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h_this = (duk_hbufferobject *) DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h_this != NULL);
- if (DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_this)) {
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_this);
- return h_this;
- }
- }
-
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_BUFFER);
- }
- return NULL;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Check that 'this' is a duk_hbufferobject and return a pointer to it. */
-DUK_LOCAL duk_hbufferobject *duk__get_bufobj_this(duk_context *ctx) {
- return duk__getrequire_bufobj_this(ctx, 0);
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Check that 'this' is a duk_hbufferobject and return a pointer to it
- * (NULL if not).
- */
-DUK_LOCAL duk_hbufferobject *duk__require_bufobj_this(duk_context *ctx) {
- return duk__getrequire_bufobj_this(ctx, 1);
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Check that value is a duk_hbufferobject and return a pointer to it. */
-DUK_LOCAL duk_hbufferobject *duk__require_bufobj_value(duk_context *ctx, duk_idx_t index) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_hbufferobject *h_obj;
-
- thr = (duk_hthread *) ctx;
-
- /* Don't accept relative indices now. */
- DUK_ASSERT(index >= 0);
-
- tv = duk_require_tval(ctx, index);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h_obj = (duk_hbufferobject *) DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h_obj != NULL);
- if (DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_obj)) {
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_obj);
- return h_obj;
- }
- }
-
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_BUFFER);
- return NULL; /* not reachable */
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-DUK_LOCAL void duk__set_bufobj_buffer(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_hbuffer *h_val) {
- duk_hthread *thr;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(h_bufobj != NULL);
- DUK_ASSERT(h_bufobj->buf == NULL); /* no need to decref */
- DUK_ASSERT(h_val != NULL);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->length = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_val);
- DUK_ASSERT(h_bufobj->shift == 0);
- DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8);
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-}
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_LOCAL duk_hbufferobject *duk__push_arraybuffer_with_length(duk_context *ctx, duk_uint_t len) {
- duk_hbuffer *h_val;
- duk_hbufferobject *h_bufobj;
-
- (void) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- h_val = (duk_hbuffer *) duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_val != NULL);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
- DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufobj != NULL);
-
- duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- return h_bufobj;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Shared offset/length coercion helper. */
-DUK_LOCAL void duk__resolve_offset_opt_length(duk_context *ctx,
- duk_hbufferobject *h_bufarg,
- duk_idx_t idx_offset,
- duk_idx_t idx_length,
- duk_uint_t *out_offset,
- duk_uint_t *out_length,
- duk_bool_t throw_flag) {
- duk_hthread *thr;
- duk_int_t offset_signed;
- duk_int_t length_signed;
- duk_uint_t offset;
- duk_uint_t length;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- offset_signed = duk_to_int(ctx, idx_offset);
- if (offset_signed < 0) {
- goto fail_range;
- }
- offset = (duk_uint_t) offset_signed;
- if (offset > h_bufarg->length) {
- goto fail_range;
- }
- DUK_ASSERT_DISABLE(offset >= 0); /* unsigned */
- DUK_ASSERT(offset <= h_bufarg->length);
-
- if (duk_is_undefined(ctx, idx_length)) {
- DUK_ASSERT(h_bufarg->length >= offset);
- length = h_bufarg->length - offset; /* >= 0 */
- } else {
- length_signed = duk_to_int(ctx, idx_length);
- if (length_signed < 0) {
- goto fail_range;
- }
- length = (duk_uint_t) length_signed;
- DUK_ASSERT(h_bufarg->length >= offset);
- if (length > h_bufarg->length - offset) {
- /* Unlike for negative arguments, some call sites
- * want length to be clamped if it's positive.
- */
- if (throw_flag) {
- goto fail_range;
- } else {
- length = h_bufarg->length - offset;
- }
- }
- }
- DUK_ASSERT_DISABLE(length >= 0); /* unsigned */
- DUK_ASSERT(offset + length <= h_bufarg->length);
-
- *out_offset = offset;
- *out_length = length;
- return;
-
- fail_range:
- DUK_ERROR_RANGE(thr, DUK_STR_INVALID_CALL_ARGS);
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Shared lenient buffer length clamping helper. No negative indices, no
- * element/byte shifting.
- */
-DUK_LOCAL void duk__clamp_startend_nonegidx_noshift(duk_context *ctx,
- duk_hbufferobject *h_bufobj,
- duk_idx_t idx_start,
- duk_idx_t idx_end,
- duk_int_t *out_start_offset,
- duk_int_t *out_end_offset) {
- duk_int_t buffer_length;
- duk_int_t start_offset;
- duk_int_t end_offset;
-
- DUK_ASSERT(out_start_offset != NULL);
- DUK_ASSERT(out_end_offset != NULL);
-
- buffer_length = (duk_int_t) h_bufobj->length;
-
- /* undefined coerces to zero which is correct */
- start_offset = duk_to_int_clamped(ctx, idx_start, 0, buffer_length);
- if (duk_is_undefined(ctx, idx_end)) {
- end_offset = buffer_length;
- } else {
- end_offset = duk_to_int_clamped(ctx, idx_end, start_offset, buffer_length);
- }
-
- DUK_ASSERT(start_offset >= 0);
- DUK_ASSERT(start_offset <= buffer_length);
- DUK_ASSERT(end_offset >= 0);
- DUK_ASSERT(end_offset <= buffer_length);
- DUK_ASSERT(start_offset <= end_offset);
-
- *out_start_offset = start_offset;
- *out_end_offset = end_offset;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Shared lenient buffer length clamping helper. Indices are treated as
- * element indices (though output values are byte offsets) which only
- * really matters for TypedArray views as other buffer object have a zero
- * shift. Negative indices are counted from end of input slice; crossed
- * indices are clamped to zero length; and final indices are clamped
- * against input slice. Used for e.g. ArrayBuffer slice().
- */
-DUK_LOCAL void duk__clamp_startend_negidx_shifted(duk_context *ctx,
- duk_hbufferobject *h_bufobj,
- duk_idx_t idx_start,
- duk_idx_t idx_end,
- duk_int_t *out_start_offset,
- duk_int_t *out_end_offset) {
- duk_int_t buffer_length;
- duk_int_t start_offset;
- duk_int_t end_offset;
-
- DUK_ASSERT(out_start_offset != NULL);
- DUK_ASSERT(out_end_offset != NULL);
-
- buffer_length = (duk_int_t) h_bufobj->length;
- buffer_length >>= h_bufobj->shift; /* as elements */
-
- /* Resolve start/end offset as element indices first; arguments
- * at idx_start/idx_end are element offsets. Working with element
- * indices first also avoids potential for wrapping.
- */
-
- start_offset = duk_to_int(ctx, idx_start);
- if (start_offset < 0) {
- start_offset = buffer_length + start_offset;
- }
- if (duk_is_undefined(ctx, idx_end)) {
- end_offset = buffer_length;
- } else {
- end_offset = duk_to_int(ctx, idx_end);
- if (end_offset < 0) {
- end_offset = buffer_length + end_offset;
- }
- }
- /* Note: start_offset/end_offset can still be < 0 here. */
-
- if (start_offset < 0) {
- start_offset = 0;
- } else if (start_offset > buffer_length) {
- start_offset = buffer_length;
- }
- if (end_offset < start_offset) {
- end_offset = start_offset;
- } else if (end_offset > buffer_length) {
- end_offset = buffer_length;
- }
- DUK_ASSERT(start_offset >= 0);
- DUK_ASSERT(start_offset <= buffer_length);
- DUK_ASSERT(end_offset >= 0);
- DUK_ASSERT(end_offset <= buffer_length);
- DUK_ASSERT(start_offset <= end_offset);
-
- /* Convert indices to byte offsets. */
- start_offset <<= h_bufobj->shift;
- end_offset <<= h_bufobj->shift;
-
- *out_start_offset = start_offset;
- *out_end_offset = end_offset;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Indexed read/write helpers (also used from outside this file)
- */
-
-DUK_INTERNAL void duk_hbufferobject_push_validated_read(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size) {
- duk_double_union du;
-
- DUK_MEMCPY((void *) du.uc, (const void *) p, (size_t) elem_size);
-
- switch (h_bufobj->elem_type) {
- case DUK_HBUFFEROBJECT_ELEM_UINT8:
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
- case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED:
-#endif
- duk_push_uint(ctx, (duk_uint_t) du.uc[0]);
- break;
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
- /* These are not needed when only Duktape.Buffer is supported. */
- case DUK_HBUFFEROBJECT_ELEM_INT8:
- duk_push_int(ctx, (duk_int_t) (duk_int8_t) du.uc[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_UINT16:
- duk_push_uint(ctx, (duk_uint_t) du.us[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_INT16:
- duk_push_int(ctx, (duk_int_t) (duk_int16_t) du.us[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_UINT32:
- duk_push_uint(ctx, (duk_uint_t) du.ui[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_INT32:
- duk_push_int(ctx, (duk_int_t) (duk_int32_t) du.ui[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_FLOAT32:
- duk_push_number(ctx, (duk_double_t) du.f[0]);
- break;
- case DUK_HBUFFEROBJECT_ELEM_FLOAT64:
- duk_push_number(ctx, (duk_double_t) du.d);
- break;
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
- default:
- DUK_UNREACHABLE();
- }
-}
-
-DUK_INTERNAL void duk_hbufferobject_validated_write(duk_context *ctx, duk_hbufferobject *h_bufobj, duk_uint8_t *p, duk_small_uint_t elem_size) {
- duk_double_union du;
-
- /* NOTE! Caller must ensure that any side effects from the
- * coercions below are safe. If that cannot be guaranteed
- * (which is normally the case), caller must coerce the
- * argument using duk_to_number() before any pointer
- * validations; the result of duk_to_number() always coerces
- * without side effects here.
- */
-
- switch (h_bufobj->elem_type) {
- case DUK_HBUFFEROBJECT_ELEM_UINT8:
- du.uc[0] = (duk_uint8_t) duk_to_uint32(ctx, -1);
- break;
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
- /* These are not needed when only Duktape.Buffer is supported. */
- case DUK_HBUFFEROBJECT_ELEM_UINT8CLAMPED:
- du.uc[0] = (duk_uint8_t) duk_to_uint8clamped(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_INT8:
- du.uc[0] = (duk_uint8_t) duk_to_int32(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_UINT16:
- du.us[0] = (duk_uint16_t) duk_to_uint32(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_INT16:
- du.us[0] = (duk_uint16_t) duk_to_int32(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_UINT32:
- du.ui[0] = (duk_uint32_t) duk_to_uint32(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_INT32:
- du.ui[0] = (duk_uint32_t) duk_to_int32(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_FLOAT32:
- du.f[0] = (duk_float_t) duk_to_number(ctx, -1);
- break;
- case DUK_HBUFFEROBJECT_ELEM_FLOAT64:
- du.d = (duk_double_t) duk_to_number(ctx, -1);
- break;
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
- default:
- DUK_UNREACHABLE();
- }
-
- DUK_MEMCPY((void *) p, (const void *) du.uc, (size_t) elem_size);
-}
-
-/*
- * Duktape.Buffer: constructor
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_buffer_constructor(duk_context *ctx) {
- duk_hthread *thr;
- duk_size_t buf_size;
- duk_small_int_t buf_dynamic;
- duk_uint8_t *buf_data;
- const duk_uint8_t *src_data;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /*
- * Constructor arguments are currently somewhat compatible with
- * (keep it that way if possible):
- *
- * http://nodejs.org/api/buffer.html
- *
- * Note that the ToBuffer() coercion (duk_to_buffer()) does NOT match
- * the constructor behavior.
- */
-
- buf_dynamic = duk_get_boolean(ctx, 1); /* default to false */
-
- switch (duk_get_type(ctx, 0)) {
- case DUK_TYPE_NUMBER: {
- /* new buffer of specified size */
- buf_size = (duk_size_t) duk_to_int(ctx, 0);
- (void) duk_push_buffer(ctx, buf_size, buf_dynamic);
- break;
- }
- case DUK_TYPE_BUFFER: {
- /* return input buffer, converted to a Duktape.Buffer object
- * if called as a constructor (no change if called as a
- * function).
- */
- duk_set_top(ctx, 1);
- break;
- }
- case DUK_TYPE_STRING: {
- /* new buffer with string contents */
- src_data = (const duk_uint8_t *) duk_get_lstring(ctx, 0, &buf_size);
- DUK_ASSERT(src_data != NULL); /* even for zero-length string */
- buf_data = (duk_uint8_t *) duk_push_buffer(ctx, buf_size, buf_dynamic);
- DUK_MEMCPY((void *) buf_data, (const void *) src_data, (size_t) buf_size);
- break;
- }
- case DUK_TYPE_OBJECT: {
- /* For all duk_hbufferobjects, get the plain buffer inside
- * without making a copy. This is compatible with Duktape 1.2
- * but means that a slice/view information is ignored and the
- * full underlying buffer is returned.
- *
- * If called as a constructor, a new Duktape.Buffer object
- * pointing to the same plain buffer is created below.
- */
- duk_hbufferobject *h_bufobj;
- h_bufobj = (duk_hbufferobject *) duk_get_hobject(ctx, 0);
- DUK_ASSERT(h_bufobj != NULL);
- if (!DUK_HOBJECT_IS_BUFFEROBJECT((duk_hobject *) h_bufobj)) {
- return DUK_RET_TYPE_ERROR;
- }
- if (h_bufobj->buf == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
- duk_push_hbuffer(ctx, h_bufobj->buf);
- break;
- }
- case DUK_TYPE_NONE:
- default: {
- return DUK_RET_TYPE_ERROR;
- }
- }
- DUK_ASSERT(duk_is_buffer(ctx, -1));
-
- /* stack is unbalanced, but: [ <something> buf ] */
-
- if (duk_is_constructor_call(ctx)) {
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
-
- h_val = duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_val != NULL);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_BUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufobj != NULL);
-
- duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
- }
- /* Note: unbalanced stack on purpose */
-
- return 1;
-}
-
-/*
- * Node.js Buffer: constructor
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
- /* Internal class is Object: Object.prototype.toString.call(new Buffer(0))
- * prints "[object Object]".
- */
- duk_int_t len;
- duk_int_t i;
- duk_hbuffer *h_buf;
- duk_hbufferobject *h_bufobj;
- duk_size_t buf_size;
-
- switch (duk_get_type(ctx, 0)) {
- case DUK_TYPE_BUFFER: {
- /* Custom behavior: plain buffer is used as internal buffer
- * without making a copy (matches Duktape.Buffer).
- */
- duk_set_top(ctx, 1); /* -> [ buffer ] */
- break;
- }
- case DUK_TYPE_NUMBER: {
- len = duk_to_int_clamped(ctx, 0, 0, DUK_INT_MAX);
- (void) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- break;
- }
- case DUK_TYPE_OBJECT: {
- duk_uint8_t *buf;
-
- (void) duk_get_prop_string(ctx, 0, "length");
- len = duk_to_int_clamped(ctx, -1, 0, DUK_INT_MAX);
- duk_pop(ctx);
- buf = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- for (i = 0; i < len; i++) {
- /* XXX: fast path for array arguments? */
- duk_get_prop_index(ctx, 0, (duk_uarridx_t) i);
- buf[i] = (duk_uint8_t) (duk_to_uint32(ctx, -1) & 0xffU);
- duk_pop(ctx);
- }
- break;
- }
- case DUK_TYPE_STRING: {
- /* ignore encoding for now */
- duk_dup(ctx, 0);
- (void) duk_to_buffer(ctx, -1, &buf_size);
- break;
- }
- default:
- return DUK_RET_TYPE_ERROR;
- }
-
- DUK_ASSERT(duk_is_buffer(ctx, -1));
- h_buf = duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_buf != NULL);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufobj != NULL);
-
- h_bufobj->buf = h_buf;
- DUK_HBUFFER_INCREF(thr, h_buf);
- DUK_ASSERT(h_bufobj->offset == 0);
- h_bufobj->length = (duk_int_t) DUK_HBUFFER_GET_SIZE(h_buf);
- DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8);
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * ArrayBuffer, DataView, and TypedArray constructors
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
-
- DUK_ASSERT_CTX_VALID(ctx);
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /* XXX: function flag to make this automatic? */
- if (!duk_is_constructor_call(ctx)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- if (duk_is_buffer(ctx, 0)) {
- /* Custom behavior: plain buffer is used as internal buffer
- * without making a copy (matches Duktape.Buffer).
- */
-
- h_val = duk_get_hbuffer(ctx, 0);
- DUK_ASSERT(h_val != NULL);
-
- /* XXX: accept any duk_hbufferobject type as an input also? */
- } else {
- duk_int_t len;
- len = duk_to_int(ctx, 0);
- if (len < 0) {
- goto fail_length;
- }
- (void) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- h_val = (duk_hbuffer *) duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_val != NULL);
-
-#if !defined(DUK_USE_ZERO_BUFFER_DATA)
- /* Khronos/ES6 requires zeroing even when DUK_USE_ZERO_BUFFER_DATA
- * is not set.
- */
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) h_val));
- DUK_MEMZERO((void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_val), (duk_size_t) len);
-#endif
- }
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARRAYBUFFER),
- DUK_BIDX_ARRAYBUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufobj != NULL);
-
- duk__set_bufobj_buffer(ctx, h_bufobj, h_val);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- return 1;
-
- fail_length:
- return DUK_RET_RANGE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-
-/* Format of magic, bits:
- * 0...1: elem size shift (0-3)
- * 2...5: elem type (DUK_HBUFFEROBJECT_ELEM_xxx)
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_hobject *h_obj;
- duk_hbufferobject *h_bufobj = NULL;
- duk_hbufferobject *h_bufarr = NULL;
- duk_hbufferobject *h_bufarg = NULL;
- duk_hbuffer *h_val;
- duk_small_uint_t magic;
- duk_small_uint_t shift;
- duk_small_uint_t elem_type;
- duk_small_uint_t elem_size;
- duk_small_uint_t class_num;
- duk_small_uint_t proto_bidx;
- duk_uint_t align_mask;
- duk_uint_t elem_length;
- duk_int_t elem_length_signed;
- duk_uint_t byte_length;
- duk_small_uint_t copy_mode;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /* XXX: function flag to make this automatic? */
- if (!duk_is_constructor_call(ctx)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* We could fit built-in index into magic but that'd make the magic
- * number dependent on built-in numbering (genbuiltins.py doesn't
- * handle that yet). So map both class and prototype from the
- * element type.
- */
- magic = duk_get_current_magic(ctx);
- shift = magic & 0x03; /* bits 0...1: shift */
- elem_type = (magic >> 2) & 0x0f; /* bits 2...5: type */
- elem_size = 1 << shift;
- align_mask = elem_size - 1;
- DUK_ASSERT(elem_type < sizeof(duk__buffer_proto_from_elemtype) / sizeof(duk_uint8_t));
- proto_bidx = duk__buffer_proto_from_elemtype[elem_type];
- DUK_ASSERT(proto_bidx < DUK_NUM_BUILTINS);
- DUK_ASSERT(elem_type < sizeof(duk__buffer_class_from_elemtype) / sizeof(duk_uint8_t));
- class_num = duk__buffer_class_from_elemtype[elem_type];
-
- DUK_DD(DUK_DDPRINT("typedarray constructor, magic=%d, shift=%d, elem_type=%d, "
- "elem_size=%d, proto_bidx=%d, class_num=%d",
- (int) magic, (int) shift, (int) elem_type, (int) elem_size,
- (int) proto_bidx, (int) class_num));
-
- /* Argument variants. When the argument is an ArrayBuffer a view to
- * the same buffer is created; otherwise a new ArrayBuffer is always
- * created.
- */
-
- tv = duk_get_tval(ctx, 0);
- DUK_ASSERT(tv != NULL); /* arg count */
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h_obj = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h_obj != NULL);
-
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h_obj) == DUK_HOBJECT_CLASS_ARRAYBUFFER) {
- /* ArrayBuffer: unlike any other argument variant, create
- * a view into the existing buffer.
- */
-
- duk_int_t byte_offset_signed;
- duk_uint_t byte_offset;
-
- h_bufarg = (duk_hbufferobject *) h_obj;
-
- byte_offset_signed = duk_to_int(ctx, 1);
- if (byte_offset_signed < 0) {
- goto fail_arguments;
- }
- byte_offset = (duk_uint_t) byte_offset_signed;
- if (byte_offset > h_bufarg->length ||
- (byte_offset & align_mask) != 0) {
- /* Must be >= 0 and multiple of element size. */
- goto fail_arguments;
- }
- if (duk_is_undefined(ctx, 2)) {
- DUK_ASSERT(h_bufarg->length >= byte_offset);
- byte_length = h_bufarg->length - byte_offset;
- if ((byte_length & align_mask) != 0) {
- /* Must be element size multiple from
- * start offset to end of buffer.
- */
- goto fail_arguments;
- }
- elem_length = (byte_length >> shift);
- } else {
- elem_length_signed = duk_to_int(ctx, 2);
- if (elem_length_signed < 0) {
- goto fail_arguments;
- }
- elem_length = (duk_uint_t) elem_length_signed;
- byte_length = elem_length << shift;
- if ((byte_length >> shift) != elem_length) {
- /* Byte length would overflow. */
- /* XXX: easier check with less code? */
- goto fail_arguments;
- }
- DUK_ASSERT(h_bufarg->length >= byte_offset);
- if (byte_length > h_bufarg->length - byte_offset) {
- /* Not enough data. */
- goto fail_arguments;
- }
- }
- DUK_UNREF(elem_length);
- DUK_ASSERT_DISABLE(byte_offset >= 0);
- DUK_ASSERT(byte_offset <= h_bufarg->length);
- DUK_ASSERT_DISABLE(byte_length >= 0);
- DUK_ASSERT(byte_offset + byte_length <= h_bufarg->length);
- DUK_ASSERT((elem_length << shift) == byte_length);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
- proto_bidx);
- h_val = h_bufarg->buf;
- if (h_val == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->offset = h_bufarg->offset + byte_offset;
- h_bufobj->length = byte_length;
- h_bufobj->shift = (duk_uint8_t) shift;
- h_bufobj->elem_type = (duk_uint8_t) elem_type;
- h_bufobj->is_view = 1;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- /* Set .buffer to the argument ArrayBuffer. */
- duk_dup(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
- duk_compact(ctx, -1);
- return 1;
- } else if (DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) {
- /* TypedArray (or other non-ArrayBuffer duk_hbufferobject).
- * Conceptually same behavior as for an Array-like argument,
- * with a few fast paths.
- */
-
- h_bufarg = (duk_hbufferobject *) h_obj;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufarg);
- elem_length_signed = (duk_int_t) (h_bufarg->length >> h_bufarg->shift);
- if (h_bufarg->buf == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* Select copy mode. Must take into account element
- * compatibility and validity of the underlying source
- * buffer.
- */
-
- DUK_DDD(DUK_DDDPRINT("selecting copy mode for bufobj arg, "
- "src byte_length=%ld, src shift=%d, "
- "src/dst elem_length=%ld; "
- "dst shift=%d -> dst byte_length=%ld",
- (long) h_bufarg->length, (int) h_bufarg->shift,
- (long) elem_length_signed, (int) shift,
- (long) (elem_length_signed << shift)));
-
- copy_mode = 2; /* default is explicit index read/write copy */
- DUK_ASSERT(elem_type < sizeof(duk__buffer_elemtype_copy_compatible) / sizeof(duk_uint16_t));
- if (DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg)) {
- if ((duk__buffer_elemtype_copy_compatible[elem_type] & (1 << h_bufarg->elem_type)) != 0) {
- DUK_DDD(DUK_DDDPRINT("source/target are copy compatible, memcpy"));
- DUK_ASSERT(shift == h_bufarg->shift); /* byte sizes will match */
- copy_mode = 0;
- } else {
- DUK_DDD(DUK_DDDPRINT("source/target not copy compatible but valid, fast copy"));
- copy_mode = 1;
- }
- }
- } else {
- /* Array or Array-like */
- elem_length_signed = (duk_int_t) duk_get_length(ctx, 0);
- copy_mode = 2;
- }
- } else if (DUK_TVAL_IS_BUFFER(tv)) {
- /* Accept plain buffer values like array initializers
- * (new in Duktape 1.4.0).
- */
- duk_hbuffer *h_srcbuf;
- h_srcbuf = DUK_TVAL_GET_BUFFER(tv);
- elem_length_signed = (duk_int_t) DUK_HBUFFER_GET_SIZE(h_srcbuf);
- copy_mode = 2; /* XXX: could add fast path for u8 compatible views */
- } else {
- /* Non-object argument is simply int coerced, matches
- * V8 behavior (except for "null", which we coerce to
- * 0 but V8 TypeErrors).
- */
- elem_length_signed = duk_to_int(ctx, 0);
- copy_mode = 3;
- }
- if (elem_length_signed < 0) {
- goto fail_arguments;
- }
- elem_length = (duk_uint_t) elem_length_signed;
- byte_length = (duk_uint_t) (elem_length << shift);
- if ((byte_length >> shift) != elem_length) {
- /* Byte length would overflow. */
- /* XXX: easier check with less code? */
- goto fail_arguments;
- }
-
- DUK_DDD(DUK_DDDPRINT("elem_length=%ld, byte_length=%ld",
- (long) elem_length, (long) byte_length));
-
- /* ArrayBuffer argument is handled specially above; the rest of the
- * argument variants are handled by shared code below.
- */
-
- /* Push a new ArrayBuffer (becomes view .buffer) */
- h_bufarr = duk__push_arraybuffer_with_length(ctx, byte_length);
- DUK_ASSERT(h_bufarr != NULL);
- h_val = h_bufarr->buf;
- DUK_ASSERT(h_val != NULL);
-
- /* Push the resulting view object and attach the ArrayBuffer. */
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(class_num),
- proto_bidx);
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- DUK_ASSERT(h_bufobj->offset == 0);
- h_bufobj->length = byte_length;
- h_bufobj->shift = (duk_uint8_t) shift;
- h_bufobj->elem_type = (duk_uint8_t) elem_type;
- h_bufobj->is_view = 1;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- /* Set .buffer */
- duk_dup(ctx, -2);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
- duk_compact(ctx, -1);
-
- /* Copy values, the copy method depends on the arguments.
- *
- * Copy mode decision may depend on the validity of the underlying
- * buffer of the source argument; there must be no harmful side effects
- * from there to here for copy_mode to still be valid.
- */
- DUK_DDD(DUK_DDDPRINT("copy mode: %d", (int) copy_mode));
- switch (copy_mode) {
- case 0: {
- /* Use byte copy. */
-
- duk_uint8_t *p_src;
- duk_uint8_t *p_dst;
-
- DUK_ASSERT(h_bufobj != NULL);
- DUK_ASSERT(h_bufobj->buf != NULL);
- DUK_ASSERT(DUK_HBUFFEROBJECT_VALID_SLICE(h_bufobj));
- DUK_ASSERT(h_bufarg != NULL);
- DUK_ASSERT(h_bufarg->buf != NULL);
- DUK_ASSERT(DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg));
-
- p_dst = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufobj);
- p_src = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufarg);
-
- DUK_DDD(DUK_DDDPRINT("using memcpy: p_src=%p, p_dst=%p, byte_length=%ld",
- (void *) p_src, (void *) p_dst, (long) byte_length));
-
- DUK_MEMCPY((void *) p_dst, (const void *) p_src, (size_t) byte_length);
- break;
- }
- case 1: {
- /* Copy values through direct validated reads and writes. */
-
- duk_small_uint_t src_elem_size;
- duk_small_uint_t dst_elem_size;
- duk_uint8_t *p_src;
- duk_uint8_t *p_src_end;
- duk_uint8_t *p_dst;
-
- DUK_ASSERT(h_bufobj != NULL);
- DUK_ASSERT(h_bufobj->buf != NULL);
- DUK_ASSERT(DUK_HBUFFEROBJECT_VALID_SLICE(h_bufobj));
- DUK_ASSERT(h_bufarg != NULL);
- DUK_ASSERT(h_bufarg->buf != NULL);
- DUK_ASSERT(DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg));
-
- src_elem_size = 1 << h_bufarg->shift;
- dst_elem_size = elem_size;
-
- p_src = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufarg);
- p_dst = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufobj);
- p_src_end = p_src + h_bufarg->length;
-
- DUK_DDD(DUK_DDDPRINT("using fast copy: p_src=%p, p_src_end=%p, p_dst=%p, "
- "src_elem_size=%d, dst_elem_size=%d",
- (void *) p_src, (void *) p_src_end, (void *) p_dst,
- (int) src_elem_size, (int) dst_elem_size));
-
- while (p_src != p_src_end) {
- DUK_DDD(DUK_DDDPRINT("fast path per element copy loop: "
- "p_src=%p, p_src_end=%p, p_dst=%p",
- (void *) p_src, (void *) p_src_end, (void *) p_dst));
- /* A validated read() is always a number, so it's write coercion
- * is always side effect free an won't invalidate pointers etc.
- */
- duk_hbufferobject_push_validated_read(ctx, h_bufarg, p_src, src_elem_size);
- duk_hbufferobject_validated_write(ctx, h_bufobj, p_dst, dst_elem_size);
- duk_pop(ctx);
- p_src += src_elem_size;
- p_dst += dst_elem_size;
- }
- break;
- }
- case 2: {
- /* Copy values by index reads and writes. Let virtual
- * property handling take care of coercion.
- */
- duk_uint_t i;
-
- DUK_DDD(DUK_DDDPRINT("using slow copy"));
-
- for (i = 0; i < elem_length; i++) {
- duk_get_prop_index(ctx, 0, (duk_uarridx_t) i);
- duk_put_prop_index(ctx, -2, (duk_uarridx_t) i);
- }
- break;
- }
- default:
- case 3: {
- /* No copy, leave zero bytes in the buffer. There's no
- * ambiguity with Float32/Float64 because zero bytes also
- * represent 0.0.
- */
-#if !defined(DUK_USE_ZERO_BUFFER_DATA)
- /* Khronos/ES6 requires zeroing even when DUK_USE_ZERO_BUFFER_DATA
- * is not set.
- */
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) h_val));
- DUK_MEMZERO((void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_val), (duk_size_t) byte_length);
-#endif
-
- DUK_DDD(DUK_DDDPRINT("using no copy"));
- break;
- }
- }
-
- return 1;
-
- fail_arguments:
- return DUK_RET_RANGE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_typedarray_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
- duk_hbufferobject *h_bufarg;
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
- duk_uint_t offset;
- duk_uint_t length;
-
- /* XXX: function flag to make this automatic? */
- if (!duk_is_constructor_call(ctx)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- h_bufarg = duk__require_bufobj_value(ctx, 0);
- DUK_ASSERT(h_bufarg != NULL);
-
- duk__resolve_offset_opt_length(ctx, h_bufarg, 1, 2, &offset, &length, 1 /*throw_flag*/);
- DUK_ASSERT(offset <= h_bufarg->length);
- DUK_ASSERT(offset + length <= h_bufarg->length);
-
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATAVIEW),
- DUK_BIDX_DATAVIEW_PROTOTYPE);
-
- h_val = h_bufarg->buf;
- if (h_val == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->offset = h_bufarg->offset + offset;
- h_bufobj->length = length;
- DUK_ASSERT(h_bufobj->shift == 0);
- DUK_ASSERT(h_bufobj->elem_type == DUK_HBUFFEROBJECT_ELEM_UINT8);
- h_bufobj->is_view = 1;
-
- /* The DataView .buffer property is ordinarily set to the argument
- * which is an ArrayBuffer. We accept any duk_hbufferobject as
- * an argument and .buffer will be set to the argument regardless
- * of what it is. This may be a bit confusing if the argument
- * is e.g. a DataView or another TypedArray view.
- *
- * XXX: Copy .buffer property from a DataView/TypedArray argument?
- * Create a fresh ArrayBuffer for Duktape.Buffer and Node.js Buffer
- * arguments? See: test-bug-dataview-buffer-prop.js.
- */
-
- duk_dup(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
- duk_compact(ctx, -1);
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_dataview_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * ArrayBuffer.isView()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) {
- duk_hobject *h_obj;
- duk_bool_t ret = 0;
-
- h_obj = duk_get_hobject(ctx, 0);
- if (h_obj != NULL && DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) {
- ret = ((duk_hbufferobject *) h_obj)->is_view;
- }
- duk_push_boolean(ctx, ret);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_arraybuffer_isview(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer: toString([encoding], [start], [end])
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- duk_int_t start_offset, end_offset;
- duk_uint8_t *buf_slice;
- duk_size_t slice_length;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_this = duk__get_bufobj_this(ctx);
- if (h_this == NULL) {
- /* XXX: happens e.g. when evaluating: String(Buffer.prototype). */
- duk_push_string(ctx, "[object Object]");
- return 1;
- }
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_this);
-
- /* ignore encoding for now */
-
- duk__clamp_startend_nonegidx_noshift(ctx, h_this, 1 /*idx_start*/, 2 /*idx_end*/, &start_offset, &end_offset);
-
- slice_length = (duk_size_t) (end_offset - start_offset);
- buf_slice = (duk_uint8_t *) duk_push_fixed_buffer(ctx, slice_length);
- DUK_ASSERT(buf_slice != NULL);
-
- if (h_this->buf == NULL) {
- goto type_error;
- }
-
- if (DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_this, start_offset + slice_length)) {
- DUK_MEMCPY((void *) buf_slice,
- (const void *) (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + start_offset),
- (size_t) slice_length);
- } else {
- /* not covered, return all zeroes */
- ;
- }
-
- duk_to_string(ctx, -1);
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tostring(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Duktape.Buffer: toString(), valueOf()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_small_int_t to_string = duk_get_current_magic(ctx);
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- tv = duk_get_borrowed_this_tval(ctx);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_BUFFER(tv)) {
- duk_hbuffer *h_buf;
- h_buf = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h_buf != NULL);
- duk_push_hbuffer(ctx, h_buf);
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h;
- duk_hbufferobject *h_bufobj;
-
- /* Accept any duk_hbufferobject, though we're only normally
- * called for Duktape.Buffer values.
- */
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- if (!DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- DUK_DD(DUK_DDPRINT("toString/valueOf() called for a non-bufferobject object"));
- goto type_error;
- }
- h_bufobj = (duk_hbufferobject *) h;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- if (h_bufobj->buf == NULL) {
- DUK_DD(DUK_DDPRINT("toString/valueOf() called for a bufferobject with NULL buf"));
- goto type_error;
- }
- duk_push_hbuffer(ctx, h_bufobj->buf);
- } else {
- goto type_error;
- }
-
- if (to_string) {
- duk_to_string(ctx, -1);
- }
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_prototype_tostring_shared(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype: toJSON()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- duk_uint8_t *buf;
- duk_uint_t i;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
-
- if (h_this->buf == NULL || !DUK_HBUFFEROBJECT_VALID_SLICE(h_this)) {
- /* Serialize uncovered backing buffer as a null; doesn't
- * really matter as long we're memory safe.
- */
- duk_push_null(ctx);
- return 1;
- }
-
- duk_push_object(ctx);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_UC_BUFFER);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_TYPE);
-
- duk_push_array(ctx);
- for (i = 0; i < h_this->length; i++) {
- /* XXX: regetting the pointer may be overkill - we're writing
- * to a side-effect free array here.
- */
- DUK_ASSERT(h_this->buf != NULL);
- buf = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this);
- duk_push_uint(ctx, (duk_uint_t) buf[i]);
- duk_put_prop_index(ctx, -2, (duk_idx_t) i);
- }
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_DATA);
-
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_tojson(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype.equals()
- * Node.js Buffer.prototype.compare()
- * Node.js Buffer.compare()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) {
- duk_hthread *thr;
- duk_small_uint_t magic;
- duk_hbufferobject *h_bufarg1;
- duk_hbufferobject *h_bufarg2;
- duk_small_int_t comp_res;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- magic = duk_get_current_magic(ctx);
- if (magic & 0x02) {
- /* Static call style. */
- h_bufarg1 = duk__require_bufobj_value(ctx, 0);
- h_bufarg2 = duk__require_bufobj_value(ctx, 1);
- } else {
- h_bufarg1 = duk__require_bufobj_this(ctx);
- h_bufarg2 = duk__require_bufobj_value(ctx, 0);
- }
- DUK_ASSERT(h_bufarg1 != NULL);
- DUK_ASSERT(h_bufarg2 != NULL);
-
- /* We want to compare the slice/view areas of the arguments.
- * If either slice/view is invalid (underlying buffer is shorter)
- * ensure equals() is false, but otherwise the only thing that
- * matters is to be memory safe.
- */
-
- if (DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg1) &&
- DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg2)) {
- comp_res = duk_js_data_compare((const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufarg1->buf) + h_bufarg1->offset,
- (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufarg2->buf) + h_bufarg2->offset,
- (duk_size_t) h_bufarg1->length,
- (duk_size_t) h_bufarg2->length);
- } else {
- comp_res = -1; /* either nonzero value is ok */
- }
-
- if (magic & 0x01) {
- /* compare: similar to string comparison but for buffer data. */
- duk_push_int(ctx, comp_res);
- } else {
- /* equals */
- duk_push_boolean(ctx, (comp_res == 0));
- }
-
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_compare_shared(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype.fill()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- const duk_uint8_t *fill_str_ptr;
- duk_size_t fill_str_len;
- duk_uint8_t fill_value;
- duk_int_t fill_offset;
- duk_int_t fill_end;
- duk_size_t fill_length;
- duk_uint8_t *p;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
- if (h_this->buf == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* [ value offset end ] */
-
- if (duk_is_string(ctx, 0)) {
- fill_str_ptr = (const duk_uint8_t *) duk_get_lstring(ctx, 0, &fill_str_len);
- DUK_ASSERT(fill_str_ptr != NULL);
- } else {
- fill_value = (duk_uint8_t) duk_to_uint32(ctx, 0);
- fill_str_ptr = (const duk_uint8_t *) &fill_value;
- fill_str_len = 1;
- }
-
- /* Fill offset handling is more lenient than in Node.js. */
-
- duk__clamp_startend_nonegidx_noshift(ctx, h_this, 1 /*idx_start*/, 2 /*idx_end*/, &fill_offset, &fill_end);
-
- DUK_DDD(DUK_DDDPRINT("fill: fill_value=%02x, fill_offset=%ld, fill_end=%ld, view length=%ld",
- (unsigned int) fill_value, (long) fill_offset, (long) fill_end, (long) h_this->length));
-
- DUK_ASSERT(fill_end - fill_offset >= 0);
- DUK_ASSERT(h_this->buf != NULL);
-
- p = (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + fill_offset);
- fill_length = (duk_size_t) (fill_end - fill_offset);
- if (fill_str_len == 1) {
- /* Handle single character fills as memset() even when
- * the fill data comes from a one-char argument.
- */
- DUK_MEMSET((void *) p, (int) fill_str_ptr[0], (size_t) fill_length);
- } else if (fill_str_len > 1) {
- duk_size_t i, n, t;
-
- for (i = 0, n = (fill_end - fill_offset), t = 0; i < n; i++) {
- p[i] = fill_str_ptr[t++];
- if (t >= fill_str_len) {
- t = 0;
- }
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("zero size fill pattern, ignore silently"));
- }
-
- /* Return the Buffer to allow chaining: b.fill(0x11).fill(0x22, 3, 5).toString() */
- duk_push_this(ctx);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_fill(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype.write(string, [offset], [length], [encoding])
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- duk_uint_t offset;
- duk_uint_t length;
- const duk_uint8_t *str_data;
- duk_size_t str_len;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
-
- /* Argument must be a string, e.g. a buffer is not allowed. */
- str_data = (const duk_uint8_t *) duk_require_lstring(ctx, 0, &str_len);
-
- duk__resolve_offset_opt_length(ctx, h_this, 1, 2, &offset, &length, 0 /*throw_flag*/);
- DUK_ASSERT(offset <= h_this->length);
- DUK_ASSERT(offset + length <= h_this->length);
-
- /* XXX: encoding is ignored now. */
-
- if (length > str_len) {
- length = (duk_uint_t) str_len;
- }
-
- if (DUK_HBUFFEROBJECT_VALID_SLICE(h_this)) {
- /* Cannot overlap. */
- DUK_MEMCPY((void *) (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + offset),
- (const void *) str_data,
- (size_t) length);
- } else {
- DUK_DDD(DUK_DDDPRINT("write() target buffer is not covered, silent ignore"));
- }
-
- duk_push_uint(ctx, length);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_write(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype.copy()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- duk_hbufferobject *h_bufarg;
- duk_int_t source_length;
- duk_int_t target_length;
- duk_int_t target_start, source_start, source_end;
- duk_uint_t target_ustart, source_ustart, source_uend;
- duk_uint_t copy_size = 0;
-
- /* [ targetBuffer targetStart sourceStart sourceEnd ] */
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_this = duk__require_bufobj_this(ctx);
- h_bufarg = duk__require_bufobj_value(ctx, 0);
- DUK_ASSERT(h_this != NULL);
- DUK_ASSERT(h_bufarg != NULL);
- source_length = (duk_int_t) h_this->length;
- target_length = (duk_int_t) h_bufarg->length;
-
- target_start = duk_to_int(ctx, 1);
- source_start = duk_to_int(ctx, 2);
- if (duk_is_undefined(ctx, 3)) {
- source_end = source_length;
- } else {
- source_end = duk_to_int(ctx, 3);
- }
-
- DUK_DDD(DUK_DDDPRINT("checking copy args: target_start=%ld, target_length=%ld, "
- "source_start=%ld, source_end=%ld, source_length=%ld",
- (long) target_start, (long) h_bufarg->length,
- (long) source_start, (long) source_end, (long) source_length));
-
- /* This behavior mostly mimics Node.js now. */
-
- if (source_start < 0 || source_end < 0 || target_start < 0) {
- /* Negative offsets cause a RangeError. */
- goto fail_bounds;
- }
- source_ustart = (duk_uint_t) source_start;
- source_uend = (duk_uint_t) source_end;
- target_ustart = (duk_uint_t) target_start;
- if (source_ustart >= source_uend || /* crossed offsets or zero size */
- source_ustart >= (duk_uint_t) source_length || /* source out-of-bounds (but positive) */
- target_ustart >= (duk_uint_t) target_length) { /* target out-of-bounds (but positive) */
- goto silent_ignore;
- }
- if (source_uend >= (duk_uint_t) source_length) {
- /* Source end clamped silently to available length. */
- source_uend = source_length;
- }
- copy_size = source_uend - source_ustart;
- if (target_ustart + copy_size > (duk_uint_t) target_length) {
- /* Clamp to target's end if too long.
- *
- * NOTE: there's no overflow possibility in the comparison;
- * both target_ustart and copy_size are >= 0 and based on
- * values in duk_int_t range. Adding them as duk_uint_t
- * values is then guaranteed not to overflow.
- */
- DUK_ASSERT(target_ustart + copy_size >= target_ustart); /* no overflow */
- DUK_ASSERT(target_ustart + copy_size >= copy_size); /* no overflow */
- copy_size = (duk_uint_t) target_length - target_ustart;
- }
-
- DUK_DDD(DUK_DDDPRINT("making copy: target_ustart=%lu source_ustart=%lu copy_size=%lu",
- (unsigned long) target_ustart, (unsigned long) source_ustart,
- (unsigned long) copy_size));
-
- DUK_ASSERT(copy_size >= 1);
- DUK_ASSERT(source_ustart <= (duk_uint_t) source_length);
- DUK_ASSERT(source_ustart + copy_size <= (duk_uint_t) source_length);
- DUK_ASSERT(target_ustart <= (duk_uint_t) target_length);
- DUK_ASSERT(target_ustart + copy_size <= (duk_uint_t) target_length);
-
- /* Ensure copy is covered by underlying buffers. */
- DUK_ASSERT(h_bufarg->buf != NULL); /* length check */
- DUK_ASSERT(h_this->buf != NULL); /* length check */
- if (DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_bufarg, target_ustart + copy_size) &&
- DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_this, source_ustart + copy_size)) {
- /* Must use memmove() because copy area may overlap (source and target
- * buffer may be the same, or from different slices.
- */
- DUK_MEMMOVE((void *) (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufarg) + target_ustart),
- (const void *) (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + source_ustart),
- (size_t) copy_size);
- } else {
- DUK_DDD(DUK_DDDPRINT("buffer copy not covered by underlying buffer(s), ignoring"));
- }
-
- silent_ignore:
- /* Return value is like write(), number of bytes written.
- * The return value matters because of code like:
- * "off += buf.copy(...)".
- */
- duk_push_uint(ctx, copy_size);
- return 1;
-
- fail_bounds:
- return DUK_RET_RANGE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_copy(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * TypedArray.prototype.set()
- *
- * TypedArray set() is pretty interesting to implement because:
- *
- * - The source argument may be a plain array or a typedarray. If the
- * source is a TypedArray, values are decoded and re-encoded into the
- * target (not as a plain byte copy). This may happen even when the
- * element byte size is the same, e.g. integer values may be re-encoded
- * into floats.
- *
- * - Source and target may refer to the same underlying buffer, so that
- * the set() operation may overlap. The specification requires that this
- * must work as if a copy was made before the operation. Note that this
- * is NOT a simple memmove() situation because the source and target
- * byte sizes may be different -- e.g. a 4-byte source (Int8Array) may
- * expand to a 16-byte target (Uint32Array) so that the target overlaps
- * the source both from beginning and the end (unlike in typical memmove).
- *
- * - Even if 'buf' pointers of the source and target differ, there's no
- * guarantee that their memory areas don't overlap. This may be the
- * case with external buffers.
- *
- * Even so, it is nice to optimize for the common case:
- *
- * - Source and target separate buffers or non-overlapping.
- *
- * - Source and target have a compatible type so that a plain byte copy
- * is possible. Note that while e.g. uint8 and int8 are compatible
- * (coercion one way or another doesn't change the byte representation),
- * e.g. int8 and uint8clamped are NOT compatible when writing int8
- * values into uint8clamped typedarray (-1 would clamp to 0 for instance).
- *
- * See test-bi-typedarray-proto-set.js.
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
- duk_hthread *thr;
- duk_hbufferobject *h_this;
- duk_hobject *h_obj;
- duk_uarridx_t i, n;
- duk_int_t offset_signed;
- duk_uint_t offset_elems;
- duk_uint_t offset_bytes;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_this);
-
- if (h_this->buf == NULL) {
- DUK_DDD(DUK_DDDPRINT("source neutered, skip copy"));
- return 0;
- }
-
- h_obj = duk_require_hobject(ctx, 0);
- DUK_ASSERT(h_obj != NULL);
-
- /* XXX: V8 throws a TypeError for negative values. Would it
- * be more useful to interpret negative offsets here from the
- * end of the buffer too?
- */
- offset_signed = duk_to_int(ctx, 1);
- if (offset_signed < 0) {
- return DUK_RET_TYPE_ERROR;
- }
- offset_elems = (duk_uint_t) offset_signed;
- offset_bytes = offset_elems << h_this->shift;
- if ((offset_bytes >> h_this->shift) != offset_elems) {
- /* Byte length would overflow. */
- /* XXX: easier check with less code? */
- return DUK_RET_RANGE_ERROR;
- }
- if (offset_bytes > h_this->length) {
- /* Equality may be OK but >length not. Checking
- * this explicitly avoids some overflow cases
- * below.
- */
- return DUK_RET_RANGE_ERROR;
- }
- DUK_ASSERT(offset_bytes <= h_this->length);
-
- /* Fast path: source is a TypedArray (or any bufferobject). */
-
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) {
- duk_hbufferobject *h_bufarg;
- duk_uint16_t comp_mask;
- duk_small_int_t no_overlap = 0;
- duk_uint_t src_length;
- duk_uint_t dst_length;
- duk_uint_t dst_length_elems;
- duk_uint8_t *p_src_base;
- duk_uint8_t *p_src_end;
- duk_uint8_t *p_src;
- duk_uint8_t *p_dst_base;
- duk_uint8_t *p_dst;
- duk_small_uint_t src_elem_size;
- duk_small_uint_t dst_elem_size;
-
- h_bufarg = (duk_hbufferobject *) h_obj;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufarg);
-
- if (h_bufarg->buf == NULL) {
- DUK_DDD(DUK_DDDPRINT("target neutered, skip copy"));
- return 0;
- }
-
- /* Nominal size check. */
- src_length = h_bufarg->length; /* bytes in source */
- dst_length_elems = (src_length >> h_bufarg->shift); /* elems in source and dest */
- dst_length = dst_length_elems << h_this->shift; /* bytes in dest */
- if ((dst_length >> h_this->shift) != dst_length_elems) {
- /* Byte length would overflow. */
- /* XXX: easier check with less code? */
- return DUK_RET_RANGE_ERROR;
- }
- DUK_DDD(DUK_DDDPRINT("nominal size check: src_length=%ld, dst_length=%ld",
- (long) src_length, (long) dst_length));
- DUK_ASSERT(offset_bytes <= h_this->length);
- if (dst_length > h_this->length - offset_bytes) {
- /* Overflow not an issue because subtraction is used on the right
- * side and guaranteed to be >= 0.
- */
- DUK_DDD(DUK_DDDPRINT("copy exceeds target buffer nominal length"));
- return DUK_RET_RANGE_ERROR;
- }
- if (!DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_this, offset_bytes + dst_length)) {
- DUK_DDD(DUK_DDDPRINT("copy not covered by underlying target buffer, ignore"));
- return 0;
- }
-
- p_src_base = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufarg);
- p_dst_base = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + offset_bytes;
-
- /* Check actual underlying buffers for validity and that they
- * cover the copy. No side effects are allowed after the check
- * so that the validity status doesn't change.
- */
- if (!DUK_HBUFFEROBJECT_VALID_SLICE(h_this) ||
- !DUK_HBUFFEROBJECT_VALID_SLICE(h_bufarg)) {
- /* The condition could be more narrow and check for the
- * copy area only, but there's no need for fine grained
- * behavior when the underlying buffer is misconfigured.
- */
- DUK_DDD(DUK_DDDPRINT("source and/or target not covered by underlying buffer, skip copy"));
- return 0;
- }
-
- /* We want to do a straight memory copy if possible: this is
- * an important operation because .set() is the TypedArray
- * way to copy chunks of memory. However, because set()
- * conceptually works in terms of elements, not all views are
- * compatible with direct byte copying.
- *
- * If we do manage a direct copy, the "overlap issue" handled
- * below can just be solved using memmove() because the source
- * and destination element sizes are necessarily equal.
- */
-
- DUK_ASSERT(h_this->elem_type < sizeof(duk__buffer_elemtype_copy_compatible) / sizeof(duk_uint16_t));
- comp_mask = duk__buffer_elemtype_copy_compatible[h_this->elem_type];
- if (comp_mask & (1 << h_bufarg->elem_type)) {
- DUK_ASSERT(src_length == dst_length);
-
- DUK_DDD(DUK_DDDPRINT("fast path: able to use memmove() because views are compatible"));
- DUK_MEMMOVE((void *) p_dst_base, (const void *) p_src_base, (size_t) dst_length);
- return 0;
- }
- DUK_DDD(DUK_DDDPRINT("fast path: views are not compatible with a byte copy, copy by item"));
-
- /* We want to avoid making a copy to process set() but that's
- * not always possible: the source and the target may overlap
- * and because element sizes are different, the overlap cannot
- * always be handled with a memmove() or choosing the copy
- * direction in a certain way. For example, if source type is
- * uint8 and target type is uint32, the target area may exceed
- * the source area from both ends!
- *
- * Note that because external buffers may point to the same
- * memory areas, we must ultimately make this check using
- * pointers.
- *
- * NOTE: careful with side effects: any side effect may cause
- * a buffer resize (or external buffer pointer/length update)!
- */
-
- DUK_DDD(DUK_DDDPRINT("overlap check: p_src_base=%p, src_length=%ld, "
- "p_dst_base=%p, dst_length=%ld",
- (void *) p_src_base, (long) src_length,
- (void *) p_dst_base, (long) dst_length));
-
- if (p_src_base >= p_dst_base + dst_length || /* source starts after dest ends */
- p_src_base + src_length <= p_dst_base) { /* source ends before dest starts */
- no_overlap = 1;
- }
-
- if (!no_overlap) {
- /* There's overlap: the desired end result is that
- * conceptually a copy is made to avoid "trampling"
- * of source data by destination writes. We make
- * an actual temporary copy to handle this case.
- */
- duk_uint8_t *p_src_copy;
-
- DUK_DDD(DUK_DDDPRINT("there is overlap, make a copy of the source"));
- p_src_copy = (duk_uint8_t *) duk_push_fixed_buffer(ctx, src_length);
- DUK_ASSERT(p_src_copy != NULL);
- DUK_MEMCPY((void *) p_src_copy, (const void *) p_src_base, (size_t) src_length);
-
- p_src_base = p_src_copy; /* use p_src_base from now on */
- }
- /* Value stack intentionally mixed size here. */
-
- DUK_DDD(DUK_DDDPRINT("after overlap check: p_src_base=%p, src_length=%ld, "
- "p_dst_base=%p, dst_length=%ld, valstack top=%ld",
- (void *) p_src_base, (long) src_length,
- (void *) p_dst_base, (long) dst_length,
- (long) duk_get_top(ctx)));
-
- /* Ready to make the copy. We must proceed element by element
- * and must avoid any side effects that might cause the buffer
- * validity check above to become invalid.
- *
- * Although we work through the value stack here, only plain
- * numbers are handled which should be side effect safe.
- */
-
- src_elem_size = 1 << h_bufarg->shift;
- dst_elem_size = 1 << h_this->shift;
- p_src = p_src_base;
- p_dst = p_dst_base;
- p_src_end = p_src_base + src_length;
-
- while (p_src != p_src_end) {
- DUK_DDD(DUK_DDDPRINT("fast path per element copy loop: "
- "p_src=%p, p_src_end=%p, p_dst=%p",
- (void *) p_src, (void *) p_src_end, (void *) p_dst));
- /* A validated read() is always a number, so it's write coercion
- * is always side effect free an won't invalidate pointers etc.
- */
- duk_hbufferobject_push_validated_read(ctx, h_bufarg, p_src, src_elem_size);
- duk_hbufferobject_validated_write(ctx, h_this, p_dst, dst_elem_size);
- duk_pop(ctx);
- p_src += src_elem_size;
- p_dst += dst_elem_size;
- }
-
- return 0;
- } else {
- /* Slow path: quite slow, but we save space by using the property code
- * to write coerce target values. We don't need to worry about overlap
- * here because the source is not a TypedArray.
- *
- * We could use the bufferobject write coercion helper but since the
- * property read may have arbitrary side effects, full validity checks
- * would be needed for every element anyway.
- */
-
- n = (duk_uarridx_t) duk_get_length(ctx, 0);
- DUK_ASSERT(offset_bytes <= h_this->length);
- if ((n << h_this->shift) > h_this->length - offset_bytes) {
- /* Overflow not an issue because subtraction is used on the right
- * side and guaranteed to be >= 0.
- */
- DUK_DDD(DUK_DDDPRINT("copy exceeds target buffer nominal length"));
- return DUK_RET_RANGE_ERROR;
- }
-
- /* There's no need to check for buffer validity status for the
- * target here: the property access code will do that for each
- * element. Moreover, if we did check the validity here, side
- * effects from reading the source argument might invalidate
- * the results anyway.
- */
-
- DUK_ASSERT_TOP(ctx, 2);
- duk_push_this(ctx);
-
- for (i = 0; i < n; i++) {
- duk_get_prop_index(ctx, 0, i);
- duk_put_prop_index(ctx, 2, offset_elems + i);
- }
- }
-
- return 0;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_typedarray_set(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.prototype.slice([start], [end])
- * ArrayBuffer.prototype.slice(begin, [end])
- * TypedArray.prototype.slice(begin, [end])
- *
- * The API calls are almost identical; negative indices are counted from end
- * of buffer, and final indices are clamped (allowing crossed indices). Main
- * differences:
- *
- * - Copy/view behavior; Node.js .slice() and TypedArray .subarray() create
- * views, ArrayBuffer .slice() creates a copy
- *
- * - Resulting object has a different class and prototype depending on the
- * call (or 'this' argument)
- *
- * - TypedArray .subarray() arguments are element indices, not byte offsets
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
- duk_hthread *thr;
- duk_small_int_t magic;
- duk_small_uint_t res_class_num;
- duk_hobject *res_proto;
- duk_hbufferobject *h_this;
- duk_hbufferobject *h_bufobj;
- duk_hbuffer *h_val;
- duk_int_t start_offset, end_offset;
- duk_uint_t slice_length;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /* [ start end ] */
-
- magic = duk_get_current_magic(ctx);
- h_this = duk__require_bufobj_this(ctx);
-
- /* Slice offsets are element (not byte) offsets, which only matters
- * for TypedArray views, Node.js Buffer and ArrayBuffer have shift
- * zero so byte and element offsets are the same. Negative indices
- * are counted from end of slice, crossed indices are allowed (and
- * result in zero length result), and final values are clamped
- * against the current slice. There's intentionally no check
- * against the underlying buffer here.
- */
-
- duk__clamp_startend_negidx_shifted(ctx, h_this, 0 /*idx_start*/, 1 /*idx_end*/, &start_offset, &end_offset);
- DUK_ASSERT(end_offset >= start_offset);
- slice_length = (duk_uint_t) (end_offset - start_offset);
-
- /* The resulting buffer object gets the same class and prototype as
- * the buffer in 'this', e.g. if the input is a Node.js Buffer the
- * result is a Node.js Buffer; if the input is a Float32Array, the
- * result is a Float32Array.
- *
- * For the class number this seems correct. The internal prototype
- * is not so clear: if 'this' is a bufferobject with a non-standard
- * prototype object, that value gets copied over into the result
- * (instead of using the standard prototype for that object type).
- */
-
- res_class_num = DUK_HOBJECT_GET_CLASS_NUMBER((duk_hobject *) h_this);
- h_bufobj = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(res_class_num),
- DUK_BIDX_OBJECT_PROTOTYPE); /* replaced */
- DUK_ASSERT(h_bufobj != NULL);
- res_proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, (duk_hobject *) h_this); /* may be NULL */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) h_bufobj, res_proto);
-
- h_bufobj->length = slice_length;
- h_bufobj->shift = h_this->shift; /* inherit */
- h_bufobj->elem_type = h_this->elem_type; /* inherit */
- h_bufobj->is_view = magic & 0x01;
- DUK_ASSERT(h_bufobj->is_view == 0 || h_bufobj->is_view == 1);
-
- h_val = h_this->buf;
- if (h_val == NULL) {
- return DUK_RET_TYPE_ERROR;
- }
-
- if (magic & 0x02) {
- /* non-zero: make copy */
- duk_uint8_t *p_copy;
- duk_size_t copy_length;
-
- p_copy = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) slice_length);
- DUK_ASSERT(p_copy != NULL);
-
- /* Copy slice, respecting underlying buffer limits; remainder
- * is left as zero.
- */
- copy_length = DUK_HBUFFEROBJECT_CLAMP_BYTELENGTH(h_this, slice_length);
- DUK_MEMCPY((void *) p_copy,
- (const void *) (DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this) + start_offset),
- copy_length);
-
- h_val = duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_val != NULL);
-
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- DUK_ASSERT(h_bufobj->offset == 0);
-
- duk_pop(ctx); /* reachable so pop OK */
- } else {
- h_bufobj->buf = h_val;
- DUK_HBUFFER_INCREF(thr, h_val);
- h_bufobj->offset = (duk_uint_t) (h_this->offset + start_offset);
-
- /* Copy the .buffer property, needed for TypedArray.prototype.subarray().
- *
- * XXX: limit copy only for TypedArray classes specifically?
- */
-
- duk_push_this(ctx);
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_LC_BUFFER)) {
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_LC_BUFFER, DUK_PROPDESC_FLAGS_NONE);
- duk_pop(ctx);
- } else {
- duk_pop_2(ctx);
- }
- }
- /* unbalanced stack on purpose */
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_slice_shared(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.isEncoding()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) {
- const char *encoding;
-
- /* only accept lowercase 'utf8' now. */
-
- encoding = duk_to_string(ctx, 0);
- DUK_ASSERT(duk_is_string(ctx, 0)); /* guaranteed by duk_to_string() */
- duk_push_boolean(ctx, DUK_STRCMP(encoding, "utf8") == 0);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_encoding(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.isBuffer()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) {
- duk_hthread *thr;
- duk_tval *tv;
- duk_hobject *h;
- duk_hobject *h_proto;
- duk_bool_t ret = 0;
-
- thr = (duk_hthread *) ctx;
-
- DUK_ASSERT(duk_get_top(ctx) >= 1); /* nargs */
- tv = duk_get_tval(ctx, 0);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- h_proto = thr->builtins[DUK_BIDX_NODEJS_BUFFER_PROTOTYPE];
- DUK_ASSERT(h_proto != NULL);
-
- h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h);
- if (h) {
- ret = duk_hobject_prototype_chain_contains(thr, h, h_proto, 0 /*ignore_loop*/);
- }
- }
-
- duk_push_boolean(ctx, ret);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_is_buffer(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.byteLength()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) {
- const char *str;
- duk_size_t len;
-
- /* At the moment Buffer(<str>) will just use the string bytes as
- * is (ignoring encoding), so we return the string length here
- * unconditionally.
- */
-
- str = duk_to_lstring(ctx, 0, &len);
- DUK_UNREF(str);
- duk_push_size_t(ctx, len);
- return 1;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_byte_length(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Node.js Buffer.concat()
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
- duk_hthread *thr;
- duk_hobject *h_arg;
- duk_int_t total_length = 0;
- duk_hbufferobject *h_bufobj;
- duk_hbufferobject *h_bufres;
- duk_hbuffer *h_val;
- duk_uint_t i, n;
- duk_uint8_t *p;
- duk_size_t space_left;
- duk_size_t copy_size;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- /* Node.js accepts only actual Arrays. */
- h_arg = duk_require_hobject(ctx, 0);
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h_arg) != DUK_HOBJECT_CLASS_ARRAY) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* Compute result length and validate argument buffers. */
- n = (duk_uint_t) duk_get_length(ctx, 0);
- for (i = 0; i < n; i++) {
- /* Neutered checks not necessary here: neutered buffers have
- * zero 'length' so we'll effectively skip them.
- */
- DUK_ASSERT_TOP(ctx, 2); /* [ array totalLength ] */
- duk_get_prop_index(ctx, 0, (duk_uarridx_t) i); /* -> [ array totalLength buf ] */
- h_bufobj = duk__require_bufobj_value(ctx, 2);
- DUK_ASSERT(h_bufobj != NULL);
- total_length += h_bufobj->length;
- duk_pop(ctx);
- }
- if (n == 1) {
- /* For the case n==1 Node.js doesn't seem to type check
- * the sole member but we do it before returning it.
- * For this case only the original buffer object is
- * returned (not a copy).
- */
- duk_get_prop_index(ctx, 0, 0);
- return 1;
- }
-
- /* User totalLength overrides a computed length, but we'll check
- * every copy in the copy loop. Note that duk_to_uint() can
- * technically have arbitrary side effects so we need to recheck
- * the buffers in the copy loop.
- */
- if (!duk_is_undefined(ctx, 1) && n > 0) {
- /* For n == 0, Node.js ignores totalLength argument and
- * returns a zero length buffer.
- */
- total_length = duk_to_int(ctx, 1);
- }
- if (total_length < 0) {
- return DUK_RET_RANGE_ERROR;
- }
-
- h_bufres = duk_push_bufferobject_raw(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BUFFEROBJECT |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_BUFFER),
- DUK_BIDX_NODEJS_BUFFER_PROTOTYPE);
- DUK_ASSERT(h_bufres != NULL);
-
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, total_length);
- DUK_ASSERT(p != NULL);
- space_left = total_length;
-
- for (i = 0; i < n; i++) {
- DUK_ASSERT_TOP(ctx, 4); /* [ array totalLength bufres buf ] */
-
- duk_get_prop_index(ctx, 0, (duk_uarridx_t) i);
- h_bufobj = duk__require_bufobj_value(ctx, 4);
- DUK_ASSERT(h_bufobj != NULL);
-
- copy_size = h_bufobj->length;
- if (copy_size > space_left) {
- copy_size = space_left;
- }
-
- if (h_bufobj->buf != NULL &&
- DUK_HBUFFEROBJECT_VALID_SLICE(h_bufobj)) {
- DUK_MEMCPY((void *) p,
- (const void *) DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_bufobj),
- copy_size);
- } else {
- /* Just skip, leaving zeroes in the result. */
- ;
- }
- p += copy_size;
- space_left -= copy_size;
-
- duk_pop(ctx);
- }
-
- h_val = duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_val != NULL);
-
- duk__set_bufobj_buffer(ctx, h_bufres, h_val);
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufres);
-
- duk_pop(ctx); /* pop plain buffer, now reachable through h_bufres */
-
- return 1; /* return h_bufres */
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_nodejs_buffer_concat(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-/*
- * Shared readfield and writefield methods
- *
- * The readfield/writefield methods need support for endianness and field
- * types. All offsets are byte based so no offset shifting is needed.
- */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* Format of magic, bits:
- * 0...1: field type; 0=uint8, 1=uint16, 2=uint32, 3=float, 4=double, 5=unused, 6=unused, 7=unused
- * 3: endianness: 0=little, 1=big
- * 4: signed: 1=yes, 0=no
- * 5: typedarray: 1=yes, 0=no
- */
-#define DUK__FLD_8BIT 0
-#define DUK__FLD_16BIT 1
-#define DUK__FLD_32BIT 2
-#define DUK__FLD_FLOAT 3
-#define DUK__FLD_DOUBLE 4
-#define DUK__FLD_VARINT 5
-#define DUK__FLD_BIGENDIAN (1 << 3)
-#define DUK__FLD_SIGNED (1 << 4)
-#define DUK__FLD_TYPEDARRAY (1 << 5)
-
-/* XXX: split into separate functions for each field type? */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) {
- duk_hthread *thr;
- duk_small_int_t magic = (duk_small_int_t) duk_get_current_magic(ctx);
- duk_small_int_t magic_ftype;
- duk_small_int_t magic_bigendian;
- duk_small_int_t magic_signed;
- duk_small_int_t magic_typedarray;
- duk_small_int_t endswap;
- duk_hbufferobject *h_this;
- duk_bool_t no_assert;
- duk_int_t offset_signed;
- duk_uint_t offset;
- duk_uint_t buffer_length;
- duk_uint_t check_length;
- duk_uint8_t *buf;
- duk_double_union du;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- magic_ftype = magic & 0x0007;
- magic_bigendian = magic & 0x0008;
- magic_signed = magic & 0x0010;
- magic_typedarray = magic & 0x0020;
-
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
- buffer_length = h_this->length;
-
- /* [ offset noAssert ], when ftype != DUK__FLD_VARINT */
- /* [ offset fieldByteLength noAssert ], when ftype == DUK__FLD_VARINT */
- /* [ offset littleEndian ], when DUK__FLD_TYPEDARRAY (regardless of ftype) */
-
- /* Handle TypedArray vs. Node.js Buffer arg differences */
- if (magic_typedarray) {
- no_assert = 0;
-#if defined(DUK_USE_INTEGER_LE)
- endswap = !duk_to_boolean(ctx, 1); /* 1=little endian */
-#else
- endswap = duk_to_boolean(ctx, 1); /* 1=little endian */
-#endif
- } else {
- no_assert = duk_to_boolean(ctx, (magic_ftype == DUK__FLD_VARINT) ? 2 : 1);
-#if defined(DUK_USE_INTEGER_LE)
- endswap = magic_bigendian;
-#else
- endswap = !magic_bigendian;
-#endif
- }
-
- /* Offset is coerced first to signed integer range and then to unsigned.
- * This ensures we can add a small byte length (1-8) to the offset in
- * bound checks and not wrap.
- */
- offset_signed = duk_to_int(ctx, 0);
- offset = (duk_uint_t) offset_signed;
- if (offset_signed < 0) {
- goto fail_bounds;
- }
-
- DUK_DDD(DUK_DDDPRINT("readfield, buffer_length=%ld, offset=%ld, no_assert=%d, "
- "magic=%04x, magic_fieldtype=%d, magic_bigendian=%d, magic_signed=%d, "
- "endswap=%d",
- (long) buffer_length, (long) offset, (int) no_assert,
- (unsigned int) magic, (int) magic_ftype, (int) (magic_bigendian >> 3),
- (int) (magic_signed >> 4), (int) endswap));
-
- /* Update 'buffer_length' to be the effective, safe limit which
- * takes into account the underlying buffer. This value will be
- * potentially invalidated by any side effect.
- */
- check_length = DUK_HBUFFEROBJECT_CLAMP_BYTELENGTH(h_this, buffer_length);
- DUK_DDD(DUK_DDDPRINT("buffer_length=%ld, check_length=%ld",
- (long) buffer_length, (long) check_length));
-
- if (h_this->buf) {
- buf = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this);
- } else {
- /* Neutered. We could go into the switch-case safely with
- * buf == NULL because check_length == 0. To avoid scanbuild
- * warnings, fail directly instead.
- */
- DUK_ASSERT(check_length == 0);
- goto fail_neutered;
- }
- DUK_ASSERT(buf != NULL);
-
- switch (magic_ftype) {
- case DUK__FLD_8BIT: {
- duk_uint8_t tmp;
- if (offset + 1U > check_length) {
- goto fail_bounds;
- }
- tmp = buf[offset];
- if (magic_signed) {
- duk_push_int(ctx, (duk_int_t) ((duk_int8_t) tmp));
- } else {
- duk_push_uint(ctx, (duk_uint_t) tmp);
- }
- break;
- }
- case DUK__FLD_16BIT: {
- duk_uint16_t tmp;
- if (offset + 2U > check_length) {
- goto fail_bounds;
- }
- DUK_MEMCPY((void *) du.uc, (const void *) (buf + offset), 2);
- tmp = du.us[0];
- if (endswap) {
- tmp = DUK_BSWAP16(tmp);
- }
- if (magic_signed) {
- duk_push_int(ctx, (duk_int_t) ((duk_int16_t) tmp));
- } else {
- duk_push_uint(ctx, (duk_uint_t) tmp);
- }
- break;
- }
- case DUK__FLD_32BIT: {
- duk_uint32_t tmp;
- if (offset + 4U > check_length) {
- goto fail_bounds;
- }
- DUK_MEMCPY((void *) du.uc, (const void *) (buf + offset), 4);
- tmp = du.ui[0];
- if (endswap) {
- tmp = DUK_BSWAP32(tmp);
- }
- if (magic_signed) {
- duk_push_int(ctx, (duk_int_t) ((duk_int32_t) tmp));
- } else {
- duk_push_uint(ctx, (duk_uint_t) tmp);
- }
- break;
- }
- case DUK__FLD_FLOAT: {
- duk_uint32_t tmp;
- if (offset + 4U > check_length) {
- goto fail_bounds;
- }
- DUK_MEMCPY((void *) du.uc, (const void *) (buf + offset), 4);
- if (endswap) {
- tmp = du.ui[0];
- tmp = DUK_BSWAP32(tmp);
- du.ui[0] = tmp;
- }
- duk_push_number(ctx, (duk_double_t) du.f[0]);
- break;
- }
- case DUK__FLD_DOUBLE: {
- if (offset + 8U > check_length) {
- goto fail_bounds;
- }
- DUK_MEMCPY((void *) du.uc, (const void *) (buf + offset), 8);
- if (endswap) {
- DUK_DBLUNION_BSWAP64(&du);
- }
- duk_push_number(ctx, (duk_double_t) du.d);
- break;
- }
- case DUK__FLD_VARINT: {
- /* Node.js Buffer variable width integer field. We don't really
- * care about speed here, so aim for shortest algorithm.
- */
- duk_int_t field_bytelen;
- duk_int_t i, i_step, i_end;
-#if defined(DUK_USE_64BIT_OPS)
- duk_int64_t tmp;
- duk_small_uint_t shift_tmp;
-#else
- duk_double_t tmp;
- duk_small_int_t highbyte;
-#endif
- const duk_uint8_t *p;
-
- field_bytelen = duk_get_int(ctx, 1); /* avoid side effects! */
- if (field_bytelen < 1 || field_bytelen > 6) {
- goto fail_field_length;
- }
- if (offset + (duk_uint_t) field_bytelen > check_length) {
- goto fail_bounds;
- }
- p = (const duk_uint8_t *) (buf + offset);
-
- /* Slow gathering of value using either 64-bit arithmetic
- * or IEEE doubles if 64-bit types not available. Handling
- * of negative numbers is a bit non-obvious in both cases.
- */
-
- if (magic_bigendian) {
- /* Gather in big endian */
- i = 0;
- i_step = 1;
- i_end = field_bytelen; /* one i_step over */
- } else {
- /* Gather in little endian */
- i = field_bytelen - 1;
- i_step = -1;
- i_end = -1; /* one i_step over */
- }
-
-#if defined(DUK_USE_64BIT_OPS)
- tmp = 0;
- do {
- DUK_ASSERT(i >= 0 && i < field_bytelen);
- tmp = (tmp << 8) + (duk_int64_t) p[i];
- i += i_step;
- } while (i != i_end);
-
- if (magic_signed) {
- /* Shift to sign extend. */
- shift_tmp = 64 - (field_bytelen * 8);
- tmp = (tmp << shift_tmp) >> shift_tmp;
- }
-
- duk_push_i64(ctx, tmp);
-#else
- highbyte = p[i];
- if (magic_signed && (highbyte & 0x80) != 0) {
- /* 0xff => 255 - 256 = -1; 0x80 => 128 - 256 = -128 */
- tmp = (duk_double_t) (highbyte - 256);
- } else {
- tmp = (duk_double_t) highbyte;
- }
- for (;;) {
- i += i_step;
- if (i == i_end) {
- break;
- }
- DUK_ASSERT(i >= 0 && i < field_bytelen);
- tmp = (tmp * 256.0) + (duk_double_t) p[i];
- }
-
- duk_push_number(ctx, tmp);
-#endif
- break;
- }
- default: { /* should never happen but default here */
- goto fail_bounds;
- }
- }
-
- return 1;
-
- fail_neutered:
- fail_field_length:
- fail_bounds:
- if (no_assert) {
- /* Node.js return value for noAssert out-of-bounds reads is
- * usually (but not always) NaN. Return NaN consistently.
- */
- duk_push_nan(ctx);
- return 1;
- }
-
- return DUK_RET_RANGE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_readfield(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-/* XXX: split into separate functions for each field type? */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) {
- duk_hthread *thr;
- duk_small_int_t magic = (duk_small_int_t) duk_get_current_magic(ctx);
- duk_small_int_t magic_ftype;
- duk_small_int_t magic_bigendian;
- duk_small_int_t magic_signed;
- duk_small_int_t magic_typedarray;
- duk_small_int_t endswap;
- duk_hbufferobject *h_this;
- duk_bool_t no_assert;
- duk_int_t offset_signed;
- duk_uint_t offset;
- duk_uint_t buffer_length;
- duk_uint_t check_length;
- duk_uint8_t *buf;
- duk_double_union du;
- duk_int_t nbytes = 0;
-
- thr = (duk_hthread *) ctx;
- DUK_UNREF(thr);
-
- magic_ftype = magic & 0x0007;
- magic_bigendian = magic & 0x0008;
- magic_signed = magic & 0x0010;
- magic_typedarray = magic & 0x0020;
- DUK_UNREF(magic_signed);
-
- h_this = duk__require_bufobj_this(ctx);
- DUK_ASSERT(h_this != NULL);
- buffer_length = h_this->length;
-
- /* [ value offset noAssert ], when ftype != DUK__FLD_VARINT */
- /* [ value offset fieldByteLength noAssert ], when ftype == DUK__FLD_VARINT */
- /* [ offset value littleEndian ], when DUK__FLD_TYPEDARRAY (regardless of ftype) */
-
- /* Handle TypedArray vs. Node.js Buffer arg differences */
- if (magic_typedarray) {
- no_assert = 0;
-#if defined(DUK_USE_INTEGER_LE)
- endswap = !duk_to_boolean(ctx, 2); /* 1=little endian */
-#else
- endswap = duk_to_boolean(ctx, 2); /* 1=little endian */
-#endif
- duk_swap(ctx, 0, 1); /* offset/value order different from Node.js */
- } else {
- no_assert = duk_to_boolean(ctx, (magic_ftype == DUK__FLD_VARINT) ? 3 : 2);
-#if defined(DUK_USE_INTEGER_LE)
- endswap = magic_bigendian;
-#else
- endswap = !magic_bigendian;
-#endif
- }
-
- /* Offset is coerced first to signed integer range and then to unsigned.
- * This ensures we can add a small byte length (1-8) to the offset in
- * bound checks and not wrap.
- */
- offset_signed = duk_to_int(ctx, 1);
- offset = (duk_uint_t) offset_signed;
-
- /* We need 'nbytes' even for a failed offset; return value must be
- * (offset + nbytes) even when write fails due to invalid offset.
- */
- if (magic_ftype != DUK__FLD_VARINT) {
- DUK_ASSERT(magic_ftype >= 0 && magic_ftype < (duk_small_int_t) (sizeof(duk__buffer_nbytes_from_fldtype) / sizeof(duk_uint8_t)));
- nbytes = duk__buffer_nbytes_from_fldtype[magic_ftype];
- } else {
- nbytes = duk_get_int(ctx, 2);
- if (nbytes < 1 || nbytes > 6) {
- goto fail_field_length;
- }
- }
- DUK_ASSERT(nbytes >= 1 && nbytes <= 8);
-
- /* Now we can check offset validity. */
- if (offset_signed < 0) {
- goto fail_bounds;
- }
-
- DUK_DDD(DUK_DDDPRINT("writefield, value=%!T, buffer_length=%ld, offset=%ld, no_assert=%d, "
- "magic=%04x, magic_fieldtype=%d, magic_bigendian=%d, magic_signed=%d, "
- "endswap=%d",
- duk_get_tval(ctx, 0), (long) buffer_length, (long) offset, (int) no_assert,
- (unsigned int) magic, (int) magic_ftype, (int) (magic_bigendian >> 3),
- (int) (magic_signed >> 4), (int) endswap));
-
- /* Coerce value to a number before computing check_length, so that
- * the field type specific coercion below can't have side effects
- * that would invalidate check_length.
- */
- duk_to_number(ctx, 0);
-
- /* Update 'buffer_length' to be the effective, safe limit which
- * takes into account the underlying buffer. This value will be
- * potentially invalidated by any side effect.
- */
- check_length = DUK_HBUFFEROBJECT_CLAMP_BYTELENGTH(h_this, buffer_length);
- DUK_DDD(DUK_DDDPRINT("buffer_length=%ld, check_length=%ld",
- (long) buffer_length, (long) check_length));
-
- if (h_this->buf) {
- buf = DUK_HBUFFEROBJECT_GET_SLICE_BASE(thr->heap, h_this);
- } else {
- /* Neutered. We could go into the switch-case safely with
- * buf == NULL because check_length == 0. To avoid scanbuild
- * warnings, fail directly instead.
- */
- DUK_ASSERT(check_length == 0);
- goto fail_neutered;
- }
- DUK_ASSERT(buf != NULL);
-
- switch (magic_ftype) {
- case DUK__FLD_8BIT: {
- if (offset + 1U > check_length) {
- goto fail_bounds;
- }
- /* sign doesn't matter when writing */
- buf[offset] = (duk_uint8_t) duk_to_uint32(ctx, 0);
- break;
- }
- case DUK__FLD_16BIT: {
- duk_uint16_t tmp;
- if (offset + 2U > check_length) {
- goto fail_bounds;
- }
- tmp = (duk_uint16_t) duk_to_uint32(ctx, 0);
- if (endswap) {
- tmp = DUK_BSWAP16(tmp);
- }
- du.us[0] = tmp;
- /* sign doesn't matter when writing */
- DUK_MEMCPY((void *) (buf + offset), (const void *) du.uc, 2);
- break;
- }
- case DUK__FLD_32BIT: {
- duk_uint32_t tmp;
- if (offset + 4U > check_length) {
- goto fail_bounds;
- }
- tmp = (duk_uint32_t) duk_to_uint32(ctx, 0);
- if (endswap) {
- tmp = DUK_BSWAP32(tmp);
- }
- du.ui[0] = tmp;
- /* sign doesn't matter when writing */
- DUK_MEMCPY((void *) (buf + offset), (const void *) du.uc, 4);
- break;
- }
- case DUK__FLD_FLOAT: {
- duk_uint32_t tmp;
- if (offset + 4U > check_length) {
- goto fail_bounds;
- }
- du.f[0] = (duk_float_t) duk_to_number(ctx, 0);
- if (endswap) {
- tmp = du.ui[0];
- tmp = DUK_BSWAP32(tmp);
- du.ui[0] = tmp;
- }
- /* sign doesn't matter when writing */
- DUK_MEMCPY((void *) (buf + offset), (const void *) du.uc, 4);
- break;
- }
- case DUK__FLD_DOUBLE: {
- if (offset + 8U > check_length) {
- goto fail_bounds;
- }
- du.d = (duk_double_t) duk_to_number(ctx, 0);
- if (endswap) {
- DUK_DBLUNION_BSWAP64(&du);
- }
- /* sign doesn't matter when writing */
- DUK_MEMCPY((void *) (buf + offset), (const void *) du.uc, 8);
- break;
- }
- case DUK__FLD_VARINT: {
- /* Node.js Buffer variable width integer field. We don't really
- * care about speed here, so aim for shortest algorithm.
- */
- duk_int_t field_bytelen;
- duk_int_t i, i_step, i_end;
-#if defined(DUK_USE_64BIT_OPS)
- duk_int64_t tmp;
-#else
- duk_double_t tmp;
-#endif
- duk_uint8_t *p;
-
- field_bytelen = (duk_int_t) nbytes;
- if (offset + (duk_uint_t) field_bytelen > check_length) {
- goto fail_bounds;
- }
-
- /* Slow writing of value using either 64-bit arithmetic
- * or IEEE doubles if 64-bit types not available. There's
- * no special sign handling when writing varints.
- */
-
- if (magic_bigendian) {
- /* Write in big endian */
- i = field_bytelen; /* one i_step added at top of loop */
- i_step = -1;
- i_end = 0;
- } else {
- /* Write in little endian */
- i = -1; /* one i_step added at top of loop */
- i_step = 1;
- i_end = field_bytelen - 1;
- }
-
- /* XXX: The duk_to_number() cast followed by integer coercion
- * is platform specific so NaN, +/- Infinity, and out-of-bounds
- * values result in platform specific output now.
- * See: test-bi-nodejs-buffer-proto-varint-special.js
- */
-
-#if defined(DUK_USE_64BIT_OPS)
- tmp = (duk_int64_t) duk_to_number(ctx, 0);
- p = (duk_uint8_t *) (buf + offset);
- do {
- i += i_step;
- DUK_ASSERT(i >= 0 && i < field_bytelen);
- p[i] = (duk_uint8_t) (tmp & 0xff);
- tmp = tmp >> 8; /* unnecessary shift for last byte */
- } while (i != i_end);
-#else
- tmp = duk_to_number(ctx, 0);
- p = (duk_uint8_t *) (buf + offset);
- do {
- i += i_step;
- tmp = DUK_FLOOR(tmp);
- DUK_ASSERT(i >= 0 && i < field_bytelen);
- p[i] = (duk_uint8_t) (DUK_FMOD(tmp, 256.0));
- tmp = tmp / 256.0; /* unnecessary div for last byte */
- } while (i != i_end);
-#endif
- break;
- }
- default: { /* should never happen but default here */
- goto fail_bounds;
- }
- }
-
- /* Node.js Buffer: return offset + #bytes written (i.e. next
- * write offset).
- */
- if (magic_typedarray) {
- /* For TypedArrays 'undefined' return value is specified
- * by ES6 (matches V8).
- */
- return 0;
- }
- duk_push_uint(ctx, offset + nbytes);
- return 1;
-
- fail_neutered:
- fail_field_length:
- fail_bounds:
- if (no_assert) {
- /* Node.js return value for failed writes is offset + #bytes
- * that would have been written.
- */
- /* XXX: for negative input offsets, 'offset' will be a large
- * positive value so the result here is confusing.
- */
- if (magic_typedarray) {
- return 0;
- }
- duk_push_uint(ctx, offset + nbytes);
- return 1;
- }
- return DUK_RET_RANGE_ERROR;
-}
-#else /* DUK_USE_BUFFEROBJECT_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_buffer_writefield(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-
-#undef DUK__FLD_8BIT
-#undef DUK__FLD_16BIT
-#undef DUK__FLD_32BIT
-#undef DUK__FLD_FLOAT
-#undef DUK__FLD_DOUBLE
-#undef DUK__FLD_VARINT
-#undef DUK__FLD_BIGENDIAN
-#undef DUK__FLD_SIGNED
-#undef DUK__FLD_TYPEDARRAY
-#line 1 "duk_bi_date.c"
-/*
- * Date built-ins
- *
- * Unlike most built-ins, Date has some platform dependencies for getting
- * UTC time, converting between UTC and local time, and parsing and
- * formatting time values. These are all abstracted behind DUK_USE_xxx
- * config options. There are built-in platform specific providers for
- * POSIX and Windows, but external providers can also be used.
- *
- * See doc/datetime.rst.
- *
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Forward declarations
- */
-
-DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval_tzoffset(duk_context *ctx, duk_small_uint_t flags, duk_int_t *out_tzoffset);
-DUK_LOCAL_DECL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_uint_t flags);
-DUK_LOCAL_DECL void duk__twodigit_year_fixup(duk_context *ctx, duk_idx_t idx_val);
-DUK_LOCAL_DECL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags);
-
-/*
- * Other file level defines
- */
-
-/* Debug macro to print all parts and dparts (used manually because of debug level). */
-#define DUK__DPRINT_PARTS_AND_DPARTS(parts,dparts) do { \
- DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld, dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \
- (long) (parts)[0], (long) (parts)[1], \
- (long) (parts)[2], (long) (parts)[3], \
- (long) (parts)[4], (long) (parts)[5], \
- (long) (parts)[6], (long) (parts)[7], \
- (double) (dparts)[0], (double) (dparts)[1], \
- (double) (dparts)[2], (double) (dparts)[3], \
- (double) (dparts)[4], (double) (dparts)[5], \
- (double) (dparts)[6], (double) (dparts)[7])); \
- } while (0)
-#define DUK__DPRINT_PARTS(parts) do { \
- DUK_D(DUK_DPRINT("parts: %ld %ld %ld %ld %ld %ld %ld %ld", \
- (long) (parts)[0], (long) (parts)[1], \
- (long) (parts)[2], (long) (parts)[3], \
- (long) (parts)[4], (long) (parts)[5], \
- (long) (parts)[6], (long) (parts)[7])); \
- } while (0)
-#define DUK__DPRINT_DPARTS(dparts) do { \
- DUK_D(DUK_DPRINT("dparts: %lf %lf %lf %lf %lf %lf %lf %lf", \
- (double) (dparts)[0], (double) (dparts)[1], \
- (double) (dparts)[2], (double) (dparts)[3], \
- (double) (dparts)[4], (double) (dparts)[5], \
- (double) (dparts)[6], (double) (dparts)[7])); \
- } while (0)
-
-/* Equivalent year for DST calculations outside [1970,2038[ range, see
- * E5 Section 15.9.1.8. Equivalent year has the same leap-year-ness and
- * starts with the same weekday on Jan 1.
- * https://bugzilla.mozilla.org/show_bug.cgi?id=351066
- */
-#define DUK__YEAR(x) ((duk_uint8_t) ((x) - 1970))
-DUK_LOCAL duk_uint8_t duk__date_equivyear[14] = {
-#if 1
- /* This is based on V8 EquivalentYear() algorithm (see src/genequivyear.py):
- * http://code.google.com/p/v8/source/browse/trunk/src/date.h#146
- */
-
- /* non-leap year: sunday, monday, ... */
- DUK__YEAR(2023), DUK__YEAR(2035), DUK__YEAR(2019), DUK__YEAR(2031),
- DUK__YEAR(2015), DUK__YEAR(2027), DUK__YEAR(2011),
-
- /* leap year: sunday, monday, ... */
- DUK__YEAR(2012), DUK__YEAR(2024), DUK__YEAR(2008), DUK__YEAR(2020),
- DUK__YEAR(2032), DUK__YEAR(2016), DUK__YEAR(2028)
-#endif
-
-#if 0
- /* This is based on Rhino EquivalentYear() algorithm:
- * https://github.com/mozilla/rhino/blob/f99cc11d616f0cdda2c42bde72b3484df6182947/src/org/mozilla/javascript/NativeDate.java
- */
-
- /* non-leap year: sunday, monday, ... */
- DUK__YEAR(1978), DUK__YEAR(1973), DUK__YEAR(1985), DUK__YEAR(1986),
- DUK__YEAR(1981), DUK__YEAR(1971), DUK__YEAR(1977),
-
- /* leap year: sunday, monday, ... */
- DUK__YEAR(1984), DUK__YEAR(1996), DUK__YEAR(1980), DUK__YEAR(1992),
- DUK__YEAR(1976), DUK__YEAR(1988), DUK__YEAR(1972)
-#endif
-};
-#undef DUK__YEAR
-
-/*
- * ISO 8601 subset parser.
- */
-
-/* Parser part count. */
-#define DUK__NUM_ISO8601_PARSER_PARTS 9
-
-/* Parser part indices. */
-#define DUK__PI_YEAR 0
-#define DUK__PI_MONTH 1
-#define DUK__PI_DAY 2
-#define DUK__PI_HOUR 3
-#define DUK__PI_MINUTE 4
-#define DUK__PI_SECOND 5
-#define DUK__PI_MILLISECOND 6
-#define DUK__PI_TZHOUR 7
-#define DUK__PI_TZMINUTE 8
-
-/* Parser part masks. */
-#define DUK__PM_YEAR (1 << DUK__PI_YEAR)
-#define DUK__PM_MONTH (1 << DUK__PI_MONTH)
-#define DUK__PM_DAY (1 << DUK__PI_DAY)
-#define DUK__PM_HOUR (1 << DUK__PI_HOUR)
-#define DUK__PM_MINUTE (1 << DUK__PI_MINUTE)
-#define DUK__PM_SECOND (1 << DUK__PI_SECOND)
-#define DUK__PM_MILLISECOND (1 << DUK__PI_MILLISECOND)
-#define DUK__PM_TZHOUR (1 << DUK__PI_TZHOUR)
-#define DUK__PM_TZMINUTE (1 << DUK__PI_TZMINUTE)
-
-/* Parser separator indices. */
-#define DUK__SI_PLUS 0
-#define DUK__SI_MINUS 1
-#define DUK__SI_T 2
-#define DUK__SI_SPACE 3
-#define DUK__SI_COLON 4
-#define DUK__SI_PERIOD 5
-#define DUK__SI_Z 6
-#define DUK__SI_NUL 7
-
-/* Parser separator masks. */
-#define DUK__SM_PLUS (1 << DUK__SI_PLUS)
-#define DUK__SM_MINUS (1 << DUK__SI_MINUS)
-#define DUK__SM_T (1 << DUK__SI_T)
-#define DUK__SM_SPACE (1 << DUK__SI_SPACE)
-#define DUK__SM_COLON (1 << DUK__SI_COLON)
-#define DUK__SM_PERIOD (1 << DUK__SI_PERIOD)
-#define DUK__SM_Z (1 << DUK__SI_Z)
-#define DUK__SM_NUL (1 << DUK__SI_NUL)
-
-/* Rule control flags. */
-#define DUK__CF_NEG (1 << 0) /* continue matching, set neg_tzoffset flag */
-#define DUK__CF_ACCEPT (1 << 1) /* accept string */
-#define DUK__CF_ACCEPT_NUL (1 << 2) /* accept string if next char is NUL (otherwise reject) */
-
-#define DUK__PACK_RULE(partmask,sepmask,nextpart,flags) \
- ((duk_uint32_t) (partmask) + \
- (((duk_uint32_t) (sepmask)) << 9) + \
- (((duk_uint32_t) (nextpart)) << 17) + \
- (((duk_uint32_t) (flags)) << 21))
-
-#define DUK__UNPACK_RULE(rule,var_nextidx,var_flags) do { \
- (var_nextidx) = (duk_small_uint_t) (((rule) >> 17) & 0x0f); \
- (var_flags) = (duk_small_uint_t) ((rule) >> 21); \
- } while (0)
-
-#define DUK__RULE_MASK_PART_SEP 0x1ffffUL
-
-/* Matching separator index is used in the control table */
-DUK_LOCAL const duk_uint8_t duk__parse_iso8601_seps[] = {
- DUK_ASC_PLUS /*0*/, DUK_ASC_MINUS /*1*/, DUK_ASC_UC_T /*2*/, DUK_ASC_SPACE /*3*/,
- DUK_ASC_COLON /*4*/, DUK_ASC_PERIOD /*5*/, DUK_ASC_UC_Z /*6*/, DUK_ASC_NUL /*7*/
-};
-
-/* Rule table: first matching rule is used to determine what to do next. */
-DUK_LOCAL const duk_uint32_t duk__parse_iso8601_control[] = {
- DUK__PACK_RULE(DUK__PM_YEAR, DUK__SM_MINUS, DUK__PI_MONTH, 0),
- DUK__PACK_RULE(DUK__PM_MONTH, DUK__SM_MINUS, DUK__PI_DAY, 0),
- DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY, DUK__SM_T | DUK__SM_SPACE, DUK__PI_HOUR, 0),
- DUK__PACK_RULE(DUK__PM_HOUR, DUK__SM_COLON, DUK__PI_MINUTE, 0),
- DUK__PACK_RULE(DUK__PM_MINUTE, DUK__SM_COLON, DUK__PI_SECOND, 0),
- DUK__PACK_RULE(DUK__PM_SECOND, DUK__SM_PERIOD, DUK__PI_MILLISECOND, 0),
- DUK__PACK_RULE(DUK__PM_TZHOUR, DUK__SM_COLON, DUK__PI_TZMINUTE, 0),
- DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_PLUS, DUK__PI_TZHOUR, 0),
- DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_MINUS, DUK__PI_TZHOUR, DUK__CF_NEG),
- DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND, DUK__SM_Z, 0, DUK__CF_ACCEPT_NUL),
- DUK__PACK_RULE(DUK__PM_YEAR | DUK__PM_MONTH | DUK__PM_DAY | DUK__PM_HOUR /*Note1*/ | DUK__PM_MINUTE | DUK__PM_SECOND | DUK__PM_MILLISECOND | DUK__PM_TZHOUR /*Note2*/ | DUK__PM_TZMINUTE, DUK__SM_NUL, 0, DUK__CF_ACCEPT)
-
- /* Note1: the specification doesn't require matching a time form with
- * just hours ("HH"), but we accept it here, e.g. "2012-01-02T12Z".
- *
- * Note2: the specification doesn't require matching a timezone offset
- * with just hours ("HH"), but accept it here, e.g. "2012-01-02T03:04:05+02"
- */
-};
-
-DUK_LOCAL duk_bool_t duk__parse_string_iso8601_subset(duk_context *ctx, const char *str) {
- duk_int_t parts[DUK__NUM_ISO8601_PARSER_PARTS];
- duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
- duk_double_t d;
- const duk_uint8_t *p;
- duk_small_uint_t part_idx = 0;
- duk_int_t accum = 0;
- duk_small_uint_t ndigits = 0;
- duk_bool_t neg_year = 0;
- duk_bool_t neg_tzoffset = 0;
- duk_uint_fast8_t ch;
- duk_small_uint_t i;
-
- /* During parsing, month and day are one-based; set defaults here. */
- DUK_MEMZERO(parts, sizeof(parts));
- DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] == 0); /* don't care value, year is mandatory */
- parts[DUK_DATE_IDX_MONTH] = 1;
- parts[DUK_DATE_IDX_DAY] = 1;
-
- /* Special handling for year sign. */
- p = (const duk_uint8_t *) str;
- ch = p[0];
- if (ch == DUK_ASC_PLUS) {
- p++;
- } else if (ch == DUK_ASC_MINUS) {
- neg_year = 1;
- p++;
- }
-
- for (;;) {
- ch = *p++;
- DUK_DDD(DUK_DDDPRINT("parsing, part_idx=%ld, char=%ld ('%c')",
- (long) part_idx, (long) ch,
- (int) ((ch >= 0x20 && ch <= 0x7e) ? ch : DUK_ASC_QUESTION)));
-
- if (ch >= DUK_ASC_0 && ch <= DUK_ASC_9) {
- if (ndigits >= 9) {
- DUK_DDD(DUK_DDDPRINT("too many digits -> reject"));
- goto reject;
- }
- if (part_idx == DUK__PI_MILLISECOND /*msec*/ && ndigits >= 3) {
- /* ignore millisecond fractions after 3 */
- } else {
- accum = accum * 10 + ((duk_int_t) ch) - ((duk_int_t) DUK_ASC_0) + 0x00;
- ndigits++;
- }
- } else {
- duk_uint_fast32_t match_val;
- duk_small_int_t sep_idx;
-
- if (ndigits <= 0) {
- goto reject;
- }
- if (part_idx == DUK__PI_MILLISECOND) {
- /* complete the millisecond field */
- while (ndigits < 3) {
- accum *= 10;
- ndigits++;
- }
- }
- parts[part_idx] = accum;
- DUK_DDD(DUK_DDDPRINT("wrote part %ld -> value %ld", (long) part_idx, (long) accum));
-
- accum = 0;
- ndigits = 0;
-
- for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t)); i++) {
- if (duk__parse_iso8601_seps[i] == ch) {
- break;
- }
- }
- if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_seps) / sizeof(duk_uint8_t))) {
- DUK_DDD(DUK_DDDPRINT("separator character doesn't match -> reject"));
- goto reject;
- }
-
- sep_idx = i;
- match_val = (1UL << part_idx) + (1UL << (sep_idx + 9)); /* match against rule part/sep bits */
-
- for (i = 0; i < (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t)); i++) {
- duk_uint_fast32_t rule = duk__parse_iso8601_control[i];
- duk_small_uint_t nextpart;
- duk_small_uint_t cflags;
-
- DUK_DDD(DUK_DDDPRINT("part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, considering rule=0x%08lx",
- (long) part_idx, (long) sep_idx,
- (unsigned long) match_val, (unsigned long) rule));
-
- if ((rule & match_val) != match_val) {
- continue;
- }
-
- DUK__UNPACK_RULE(rule, nextpart, cflags);
-
- DUK_DDD(DUK_DDDPRINT("rule match -> part_idx=%ld, sep_idx=%ld, match_val=0x%08lx, "
- "rule=0x%08lx -> nextpart=%ld, cflags=0x%02lx",
- (long) part_idx, (long) sep_idx,
- (unsigned long) match_val, (unsigned long) rule,
- (long) nextpart, (unsigned long) cflags));
-
- if (cflags & DUK__CF_NEG) {
- neg_tzoffset = 1;
- }
-
- if (cflags & DUK__CF_ACCEPT) {
- goto accept;
- }
-
- if (cflags & DUK__CF_ACCEPT_NUL) {
- DUK_ASSERT(*(p - 1) != (char) 0);
- if (*p == DUK_ASC_NUL) {
- goto accept;
- }
- goto reject;
- }
-
- part_idx = nextpart;
- break;
- } /* rule match */
-
- if (i == (duk_small_uint_t) (sizeof(duk__parse_iso8601_control) / sizeof(duk_uint32_t))) {
- DUK_DDD(DUK_DDDPRINT("no rule matches -> reject"));
- goto reject;
- }
-
- if (ch == 0) {
- /* This shouldn't be necessary, but check just in case
- * to avoid any chance of overruns.
- */
- DUK_DDD(DUK_DDDPRINT("NUL after rule matching (should not happen) -> reject"));
- goto reject;
- }
- } /* if-digit-else-ctrl */
- } /* char loop */
-
- /* We should never exit the loop above. */
- DUK_UNREACHABLE();
-
- reject:
- DUK_DDD(DUK_DDDPRINT("reject"));
- return 0;
-
- accept:
- DUK_DDD(DUK_DDDPRINT("accept"));
-
- /* Apply timezone offset to get the main parts in UTC */
- if (neg_year) {
- parts[DUK__PI_YEAR] = -parts[DUK__PI_YEAR];
- }
- if (neg_tzoffset) {
- parts[DUK__PI_HOUR] += parts[DUK__PI_TZHOUR];
- parts[DUK__PI_MINUTE] += parts[DUK__PI_TZMINUTE];
- } else {
- parts[DUK__PI_HOUR] -= parts[DUK__PI_TZHOUR];
- parts[DUK__PI_MINUTE] -= parts[DUK__PI_TZMINUTE];
- }
- parts[DUK__PI_MONTH] -= 1; /* zero-based month */
- parts[DUK__PI_DAY] -= 1; /* zero-based day */
-
- /* Use double parts, they tolerate unnormalized time.
- *
- * Note: DUK_DATE_IDX_WEEKDAY is initialized with a bogus value (DUK__PI_TZHOUR)
- * on purpose. It won't be actually used by duk_bi_date_get_timeval_from_dparts(),
- * but will make the value initialized just in case, and avoid any
- * potential for Valgrind issues.
- */
- for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) {
- DUK_DDD(DUK_DDDPRINT("part[%ld] = %ld", (long) i, (long) parts[i]));
- dparts[i] = parts[i];
- }
-
- d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/);
- duk_push_number(ctx, d);
- return 1;
-}
-
-/*
- * Date/time parsing helper.
- *
- * Parse a datetime string into a time value. We must first try to parse
- * the input according to the standard format in E5.1 Section 15.9.1.15.
- * If that fails, we can try to parse using custom parsing, which can
- * either be platform neutral (custom code) or platform specific (using
- * existing platform API calls).
- *
- * Note in particular that we must parse whatever toString(), toUTCString(),
- * and toISOString() can produce; see E5.1 Section 15.9.4.2.
- *
- * Returns 1 to allow tail calling.
- *
- * There is much room for improvement here with respect to supporting
- * alternative datetime formats. For instance, V8 parses '2012-01-01' as
- * UTC and '2012/01/01' as local time.
- */
-
-DUK_LOCAL duk_ret_t duk__parse_string(duk_context *ctx, const char *str) {
- /* XXX: there is a small risk here: because the ISO 8601 parser is
- * very loose, it may end up parsing some datetime values which
- * would be better parsed with a platform specific parser.
- */
-
- DUK_ASSERT(str != NULL);
- DUK_DDD(DUK_DDDPRINT("parse datetime from string '%s'", (const char *) str));
-
- if (duk__parse_string_iso8601_subset(ctx, str) != 0) {
- return 1;
- }
-
-#if defined(DUK_USE_DATE_PARSE_STRING)
- /* Contract, either:
- * - Push value on stack and return 1
- * - Don't push anything on stack and return 0
- */
-
- if (DUK_USE_DATE_PARSE_STRING(ctx, str) != 0) {
- return 1;
- }
-#else
- /* No platform-specific parsing, this is not an error. */
-#endif
-
- duk_push_nan(ctx);
- return 1;
-}
-
-/*
- * Calendar helpers
- *
- * Some helpers are used for getters and can operate on normalized values
- * which can be represented with 32-bit signed integers. Other helpers are
- * needed by setters and operate on un-normalized double values, must watch
- * out for non-finite numbers etc.
- */
-
-DUK_LOCAL duk_uint8_t duk__days_in_month[12] = {
- (duk_uint8_t) 31, (duk_uint8_t) 28, (duk_uint8_t) 31, (duk_uint8_t) 30,
- (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 31,
- (duk_uint8_t) 30, (duk_uint8_t) 31, (duk_uint8_t) 30, (duk_uint8_t) 31
-};
-
-/* Maximum iteration count for computing UTC-to-local time offset when
- * creating an Ecmascript time value from local parts.
- */
-#define DUK__LOCAL_TZOFFSET_MAXITER 4
-
-/* Because 'day since epoch' can be negative and is used to compute weekday
- * using a modulo operation, add this multiple of 7 to avoid negative values
- * when year is below 1970 epoch. Ecmascript time values are restricted to
- * +/- 100 million days from epoch, so this adder fits nicely into 32 bits.
- * Round to a multiple of 7 (= floor(100000000 / 7) * 7) and add margin.
- */
-#define DUK__WEEKDAY_MOD_ADDER (20000000 * 7) /* 0x08583b00 */
-
-DUK_INTERNAL duk_bool_t duk_bi_date_is_leap_year(duk_int_t year) {
- if ((year % 4) != 0) {
- return 0;
- }
- if ((year % 100) != 0) {
- return 1;
- }
- if ((year % 400) != 0) {
- return 0;
- }
- return 1;
-}
-
-DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_valid_range(duk_double_t x) {
- return (x >= -DUK_DATE_MSEC_100M_DAYS && x <= DUK_DATE_MSEC_100M_DAYS);
-}
-
-DUK_INTERNAL duk_bool_t duk_bi_date_timeval_in_leeway_range(duk_double_t x) {
- return (x >= -DUK_DATE_MSEC_100M_DAYS_LEEWAY && x <= DUK_DATE_MSEC_100M_DAYS_LEEWAY);
-}
-
-DUK_INTERNAL duk_bool_t duk_bi_date_year_in_valid_range(duk_double_t x) {
- return (x >= DUK_DATE_MIN_ECMA_YEAR && x <= DUK_DATE_MAX_ECMA_YEAR);
-}
-
-DUK_LOCAL duk_double_t duk__timeclip(duk_double_t x) {
- if (!DUK_ISFINITE(x)) {
- return DUK_DOUBLE_NAN;
- }
-
- if (!duk_bi_date_timeval_in_valid_range(x)) {
- return DUK_DOUBLE_NAN;
- }
-
- x = duk_js_tointeger_number(x);
-
- /* Here we'd have the option to normalize -0 to +0. */
- return x;
-}
-
-/* Integer division which floors also negative values correctly. */
-DUK_LOCAL duk_int_t duk__div_floor(duk_int_t a, duk_int_t b) {
- DUK_ASSERT(b > 0);
- if (a >= 0) {
- return a / b;
- } else {
- /* e.g. a = -4, b = 5 --> -4 - 5 + 1 / 5 --> -8 / 5 --> -1
- * a = -5, b = 5 --> -5 - 5 + 1 / 5 --> -9 / 5 --> -1
- * a = -6, b = 5 --> -6 - 5 + 1 / 5 --> -10 / 5 --> -2
- */
- return (a - b + 1) / b;
- }
-}
-
-/* Compute day number of the first day of a given year. */
-DUK_LOCAL duk_int_t duk__day_from_year(duk_int_t year) {
- /* Note: in integer arithmetic, (x / 4) is same as floor(x / 4) for non-negative
- * values, but is incorrect for negative ones.
- */
- return 365 * (year - 1970)
- + duk__div_floor(year - 1969, 4)
- - duk__div_floor(year - 1901, 100)
- + duk__div_floor(year - 1601, 400);
-}
-
-/* Given a day number, determine year and day-within-year. */
-DUK_LOCAL duk_int_t duk__year_from_day(duk_int_t day, duk_small_int_t *out_day_within_year) {
- duk_int_t year;
- duk_int_t diff_days;
-
- /* estimate year upwards (towards positive infinity), then back down;
- * two iterations should be enough
- */
-
- if (day >= 0) {
- year = 1970 + day / 365;
- } else {
- year = 1970 + day / 366;
- }
-
- for (;;) {
- diff_days = duk__day_from_year(year) - day;
- DUK_DDD(DUK_DDDPRINT("year=%ld day=%ld, diff_days=%ld", (long) year, (long) day, (long) diff_days));
- if (diff_days <= 0) {
- DUK_ASSERT(-diff_days < 366); /* fits into duk_small_int_t */
- *out_day_within_year = -diff_days;
- DUK_DDD(DUK_DDDPRINT("--> year=%ld, day-within-year=%ld",
- (long) year, (long) *out_day_within_year));
- DUK_ASSERT(*out_day_within_year >= 0);
- DUK_ASSERT(*out_day_within_year < (duk_bi_date_is_leap_year(year) ? 366 : 365));
- return year;
- }
-
- /* Note: this is very tricky; we must never 'overshoot' the
- * correction downwards.
- */
- year -= 1 + (diff_days - 1) / 366; /* conservative */
- }
-}
-
-/* Given a (year, month, day-within-month) triple, compute day number.
- * The input triple is un-normalized and may contain non-finite values.
- */
-DUK_LOCAL duk_double_t duk__make_day(duk_double_t year, duk_double_t month, duk_double_t day) {
- duk_int_t day_num;
- duk_bool_t is_leap;
- duk_small_int_t i, n;
-
- /* Assume that year, month, day are all coerced to whole numbers.
- * They may also be NaN or infinity, in which case this function
- * must return NaN or infinity to ensure time value becomes NaN.
- * If 'day' is NaN, the final return will end up returning a NaN,
- * so it doesn't need to be checked here.
- */
-
- if (!DUK_ISFINITE(year) || !DUK_ISFINITE(month)) {
- return DUK_DOUBLE_NAN;
- }
-
- year += DUK_FLOOR(month / 12.0);
-
- month = DUK_FMOD(month, 12.0);
- if (month < 0.0) {
- /* handle negative values */
- month += 12.0;
- }
-
- /* The algorithm in E5.1 Section 15.9.1.12 normalizes month, but
- * does not normalize the day-of-month (nor check whether or not
- * it is finite) because it's not necessary for finding the day
- * number which matches the (year,month) pair.
- *
- * We assume that duk__day_from_year() is exact here.
- *
- * Without an explicit infinity / NaN check in the beginning,
- * day_num would be a bogus integer here.
- *
- * It's possible for 'year' to be out of integer range here.
- * If so, we need to return NaN without integer overflow.
- * This fixes test-bug-setyear-overflow.js.
- */
-
- if (!duk_bi_date_year_in_valid_range(year)) {
- DUK_DD(DUK_DDPRINT("year not in ecmascript valid range, avoid integer overflow: %lf", (double) year));
- return DUK_DOUBLE_NAN;
- }
- day_num = duk__day_from_year((duk_int_t) year);
- is_leap = duk_bi_date_is_leap_year((duk_int_t) year);
-
- n = (duk_small_int_t) month;
- for (i = 0; i < n; i++) {
- day_num += duk__days_in_month[i];
- if (i == 1 && is_leap) {
- day_num++;
- }
- }
-
- /* If 'day' is NaN, returns NaN. */
- return (duk_double_t) day_num + day;
-}
-
-/* Split time value into parts. The time value is assumed to be an internal
- * one, i.e. finite, no fractions. Possible local time adjustment has already
- * been applied when reading the time value.
- */
-DUK_INTERNAL void duk_bi_date_timeval_to_parts(duk_double_t d, duk_int_t *parts, duk_double_t *dparts, duk_small_uint_t flags) {
- duk_double_t d1, d2;
- duk_int_t t1, t2;
- duk_int_t day_since_epoch;
- duk_int_t year; /* does not fit into 16 bits */
- duk_small_int_t day_in_year;
- duk_small_int_t month;
- duk_small_int_t day;
- duk_small_int_t dim;
- duk_int_t jan1_since_epoch;
- duk_small_int_t jan1_weekday;
- duk_int_t equiv_year;
- duk_small_uint_t i;
- duk_bool_t is_leap;
- duk_small_int_t arridx;
-
- DUK_ASSERT(DUK_ISFINITE(d)); /* caller checks */
- DUK_ASSERT(DUK_FLOOR(d) == d); /* no fractions in internal time */
-
- /* The timevalue must be in valid Ecmascript range, but since a local
- * time offset can be applied, we need to allow a +/- 24h leeway to
- * the value. In other words, although the UTC time is within the
- * Ecmascript range, the local part values can be just outside of it.
- */
- DUK_UNREF(duk_bi_date_timeval_in_leeway_range);
- DUK_ASSERT(duk_bi_date_timeval_in_leeway_range(d));
-
- /* these computations are guaranteed to be exact for the valid
- * E5 time value range, assuming milliseconds without fractions.
- */
- d1 = (duk_double_t) DUK_FMOD(d, (double) DUK_DATE_MSEC_DAY);
- if (d1 < 0.0) {
- /* deal with negative values */
- d1 += (duk_double_t) DUK_DATE_MSEC_DAY;
- }
- d2 = DUK_FLOOR((double) (d / (duk_double_t) DUK_DATE_MSEC_DAY));
- DUK_ASSERT(d2 * ((duk_double_t) DUK_DATE_MSEC_DAY) + d1 == d);
- /* now expected to fit into a 32-bit integer */
- t1 = (duk_int_t) d1;
- t2 = (duk_int_t) d2;
- day_since_epoch = t2;
- DUK_ASSERT((duk_double_t) t1 == d1);
- DUK_ASSERT((duk_double_t) t2 == d2);
-
- /* t1 = milliseconds within day (fits 32 bit)
- * t2 = day number from epoch (fits 32 bit, may be negative)
- */
-
- parts[DUK_DATE_IDX_MILLISECOND] = t1 % 1000; t1 /= 1000;
- parts[DUK_DATE_IDX_SECOND] = t1 % 60; t1 /= 60;
- parts[DUK_DATE_IDX_MINUTE] = t1 % 60; t1 /= 60;
- parts[DUK_DATE_IDX_HOUR] = t1;
- DUK_ASSERT(parts[DUK_DATE_IDX_MILLISECOND] >= 0 && parts[DUK_DATE_IDX_MILLISECOND] <= 999);
- DUK_ASSERT(parts[DUK_DATE_IDX_SECOND] >= 0 && parts[DUK_DATE_IDX_SECOND] <= 59);
- DUK_ASSERT(parts[DUK_DATE_IDX_MINUTE] >= 0 && parts[DUK_DATE_IDX_MINUTE] <= 59);
- DUK_ASSERT(parts[DUK_DATE_IDX_HOUR] >= 0 && parts[DUK_DATE_IDX_HOUR] <= 23);
-
- DUK_DDD(DUK_DDDPRINT("d=%lf, d1=%lf, d2=%lf, t1=%ld, t2=%ld, parts: hour=%ld min=%ld sec=%ld msec=%ld",
- (double) d, (double) d1, (double) d2, (long) t1, (long) t2,
- (long) parts[DUK_DATE_IDX_HOUR],
- (long) parts[DUK_DATE_IDX_MINUTE],
- (long) parts[DUK_DATE_IDX_SECOND],
- (long) parts[DUK_DATE_IDX_MILLISECOND]));
-
- /* This assert depends on the input parts representing time inside
- * the Ecmascript range.
- */
- DUK_ASSERT(t2 + DUK__WEEKDAY_MOD_ADDER >= 0);
- parts[DUK_DATE_IDX_WEEKDAY] = (t2 + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */
- DUK_ASSERT(parts[DUK_DATE_IDX_WEEKDAY] >= 0 && parts[DUK_DATE_IDX_WEEKDAY] <= 6);
-
- year = duk__year_from_day(t2, &day_in_year);
- day = day_in_year;
- is_leap = duk_bi_date_is_leap_year(year);
- for (month = 0; month < 12; month++) {
- dim = duk__days_in_month[month];
- if (month == 1 && is_leap) {
- dim++;
- }
- DUK_DDD(DUK_DDDPRINT("month=%ld, dim=%ld, day=%ld",
- (long) month, (long) dim, (long) day));
- if (day < dim) {
- break;
- }
- day -= dim;
- }
- DUK_DDD(DUK_DDDPRINT("final month=%ld", (long) month));
- DUK_ASSERT(month >= 0 && month <= 11);
- DUK_ASSERT(day >= 0 && day <= 31);
-
- /* Equivalent year mapping, used to avoid DST trouble when platform
- * may fail to provide reasonable DST answers for dates outside the
- * ordinary range (e.g. 1970-2038). An equivalent year has the same
- * leap-year-ness as the original year and begins on the same weekday
- * (Jan 1).
- *
- * The year 2038 is avoided because there seem to be problems with it
- * on some platforms. The year 1970 is also avoided as there were
- * practical problems with it; an equivalent year is used for it too,
- * which breaks some DST computations for 1970 right now, see e.g.
- * test-bi-date-tzoffset-brute-fi.js.
- */
- if ((flags & DUK_DATE_FLAG_EQUIVYEAR) && (year < 1971 || year > 2037)) {
- DUK_ASSERT(is_leap == 0 || is_leap == 1);
-
- jan1_since_epoch = day_since_epoch - day_in_year; /* day number for Jan 1 since epoch */
- DUK_ASSERT(jan1_since_epoch + DUK__WEEKDAY_MOD_ADDER >= 0);
- jan1_weekday = (jan1_since_epoch + 4 + DUK__WEEKDAY_MOD_ADDER) % 7; /* E5.1 Section 15.9.1.6 */
- DUK_ASSERT(jan1_weekday >= 0 && jan1_weekday <= 6);
- arridx = jan1_weekday;
- if (is_leap) {
- arridx += 7;
- }
- DUK_ASSERT(arridx >= 0 && arridx < (duk_small_int_t) (sizeof(duk__date_equivyear) / sizeof(duk_uint8_t)));
-
- equiv_year = (duk_int_t) duk__date_equivyear[arridx] + 1970;
- year = equiv_year;
- DUK_DDD(DUK_DDDPRINT("equiv year mapping, year=%ld, day_in_year=%ld, day_since_epoch=%ld, "
- "jan1_since_epoch=%ld, jan1_weekday=%ld -> equiv year %ld",
- (long) year, (long) day_in_year, (long) day_since_epoch,
- (long) jan1_since_epoch, (long) jan1_weekday, (long) equiv_year));
- }
-
- parts[DUK_DATE_IDX_YEAR] = year;
- parts[DUK_DATE_IDX_MONTH] = month;
- parts[DUK_DATE_IDX_DAY] = day;
-
- if (flags & DUK_DATE_FLAG_ONEBASED) {
- parts[DUK_DATE_IDX_MONTH]++; /* zero-based -> one-based */
- parts[DUK_DATE_IDX_DAY]++; /* -""- */
- }
-
- if (dparts != NULL) {
- for (i = 0; i < DUK_DATE_IDX_NUM_PARTS; i++) {
- dparts[i] = (duk_double_t) parts[i];
- }
- }
-}
-
-/* Compute time value from (double) parts. The parts can be either UTC
- * or local time; if local, they need to be (conceptually) converted into
- * UTC time. The parts may represent valid or invalid time, and may be
- * wildly out of range (but may cancel each other and still come out in
- * the valid Date range).
- */
-DUK_INTERNAL duk_double_t duk_bi_date_get_timeval_from_dparts(duk_double_t *dparts, duk_small_uint_t flags) {
-#if defined(DUK_USE_PARANOID_DATE_COMPUTATION)
- /* See comments below on MakeTime why these are volatile. */
- volatile duk_double_t tmp_time;
- volatile duk_double_t tmp_day;
- volatile duk_double_t d;
-#else
- duk_double_t tmp_time;
- duk_double_t tmp_day;
- duk_double_t d;
-#endif
- duk_small_uint_t i;
- duk_int_t tzoff, tzoffprev1, tzoffprev2;
-
- /* Expects 'this' at top of stack on entry. */
-
- /* Coerce all finite parts with ToInteger(). ToInteger() must not
- * be called for NaN/Infinity because it will convert e.g. NaN to
- * zero. If ToInteger() has already been called, this has no side
- * effects and is idempotent.
- *
- * Don't read dparts[DUK_DATE_IDX_WEEKDAY]; it will cause Valgrind
- * issues if the value is uninitialized.
- */
- for (i = 0; i <= DUK_DATE_IDX_MILLISECOND; i++) {
- /* SCANBUILD: scan-build complains here about assigned value
- * being garbage or undefined. This is correct but operating
- * on undefined values has no ill effect and is ignored by the
- * caller in the case where this happens.
- */
- d = dparts[i];
- if (DUK_ISFINITE(d)) {
- dparts[i] = duk_js_tointeger_number(d);
- }
- }
-
- /* Use explicit steps in computation to try to ensure that
- * computation happens with intermediate results coerced to
- * double values (instead of using something more accurate).
- * E.g. E5.1 Section 15.9.1.11 requires use of IEEE 754
- * rules (= Ecmascript '+' and '*' operators).
- *
- * Without 'volatile' even this approach fails on some platform
- * and compiler combinations. For instance, gcc 4.8.1 on Ubuntu
- * 64-bit, with -m32 and without -std=c99, test-bi-date-canceling.js
- * would fail because of some optimizations when computing tmp_time
- * (MakeTime below). Adding 'volatile' to tmp_time solved this
- * particular problem (annoyingly, also adding debug prints or
- * running the executable under valgrind hides it).
- */
-
- /* MakeTime */
- tmp_time = 0.0;
- tmp_time += dparts[DUK_DATE_IDX_HOUR] * ((duk_double_t) DUK_DATE_MSEC_HOUR);
- tmp_time += dparts[DUK_DATE_IDX_MINUTE] * ((duk_double_t) DUK_DATE_MSEC_MINUTE);
- tmp_time += dparts[DUK_DATE_IDX_SECOND] * ((duk_double_t) DUK_DATE_MSEC_SECOND);
- tmp_time += dparts[DUK_DATE_IDX_MILLISECOND];
-
- /* MakeDay */
- tmp_day = duk__make_day(dparts[DUK_DATE_IDX_YEAR], dparts[DUK_DATE_IDX_MONTH], dparts[DUK_DATE_IDX_DAY]);
-
- /* MakeDate */
- d = tmp_day * ((duk_double_t) DUK_DATE_MSEC_DAY) + tmp_time;
-
- DUK_DDD(DUK_DDDPRINT("time=%lf day=%lf --> timeval=%lf",
- (double) tmp_time, (double) tmp_day, (double) d));
-
- /* Optional UTC conversion. */
- if (flags & DUK_DATE_FLAG_LOCALTIME) {
- /* DUK_USE_DATE_GET_LOCAL_TZOFFSET() needs to be called with a
- * time value computed from UTC parts. At this point we only
- * have 'd' which is a time value computed from local parts, so
- * it is off by the UTC-to-local time offset which we don't know
- * yet. The current solution for computing the UTC-to-local
- * time offset is to iterate a few times and detect a fixed
- * point or a two-cycle loop (or a sanity iteration limit),
- * see test-bi-date-local-parts.js and test-bi-date-tzoffset-basic-fi.js.
- *
- * E5.1 Section 15.9.1.9:
- * UTC(t) = t - LocalTZA - DaylightSavingTA(t - LocalTZA)
- *
- * For NaN/inf, DUK_USE_DATE_GET_LOCAL_TZOFFSET() returns 0.
- */
-
-#if 0
- /* Old solution: don't iterate, incorrect */
- tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d);
- DUK_DDD(DUK_DDDPRINT("tzoffset w/o iteration, tzoff=%ld", (long) tzoff));
- d -= tzoff * 1000L;
- DUK_UNREF(tzoffprev1);
- DUK_UNREF(tzoffprev2);
-#endif
-
- /* Iteration solution */
- tzoff = 0;
- tzoffprev1 = 999999999L; /* invalid value which never matches */
- for (i = 0; i < DUK__LOCAL_TZOFFSET_MAXITER; i++) {
- tzoffprev2 = tzoffprev1;
- tzoffprev1 = tzoff;
- tzoff = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d - tzoff * 1000L);
- DUK_DDD(DUK_DDDPRINT("tzoffset iteration, i=%d, tzoff=%ld, tzoffprev1=%ld tzoffprev2=%ld",
- (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2));
- if (tzoff == tzoffprev1) {
- DUK_DDD(DUK_DDDPRINT("tzoffset iteration finished, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld",
- (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2));
- break;
- } else if (tzoff == tzoffprev2) {
- /* Two value cycle, see e.g. test-bi-date-tzoffset-basic-fi.js.
- * In these cases, favor a higher tzoffset to get a consistent
- * result which is independent of iteration count. Not sure if
- * this is a generically correct solution.
- */
- DUK_DDD(DUK_DDDPRINT("tzoffset iteration two-value cycle, i=%d, tzoff=%ld, tzoffprev1=%ld, tzoffprev2=%ld",
- (int) i, (long) tzoff, (long) tzoffprev1, (long) tzoffprev2));
- if (tzoffprev1 > tzoff) {
- tzoff = tzoffprev1;
- }
- break;
- }
- }
- DUK_DDD(DUK_DDDPRINT("tzoffset iteration, tzoff=%ld", (long) tzoff));
- d -= tzoff * 1000L;
- }
-
- /* TimeClip(), which also handles Infinity -> NaN conversion */
- d = duk__timeclip(d);
-
- return d;
-}
-
-/*
- * API oriented helpers
- */
-
-/* Push 'this' binding, check that it is a Date object; then push the
- * internal time value. At the end, stack is: [ ... this timeval ].
- * Returns the time value. Local time adjustment is done if requested.
- */
-DUK_LOCAL duk_double_t duk__push_this_get_timeval_tzoffset(duk_context *ctx, duk_small_uint_t flags, duk_int_t *out_tzoffset) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
- duk_double_t d;
- duk_int_t tzoffset = 0;
-
- duk_push_this(ctx);
- h = duk_get_hobject(ctx, -1); /* XXX: getter with class check, useful in built-ins */
- if (h == NULL || DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_DATE) {
- DUK_ERROR_TYPE(thr, "expected Date");
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- d = duk_to_number(ctx, -1);
- duk_pop(ctx);
-
- if (DUK_ISNAN(d)) {
- if (flags & DUK_DATE_FLAG_NAN_TO_ZERO) {
- d = 0.0;
- }
- if (flags & DUK_DATE_FLAG_NAN_TO_RANGE_ERROR) {
- DUK_ERROR_RANGE(thr, "Invalid Date");
- }
- }
- /* if no NaN handling flag, may still be NaN here, but not Inf */
- DUK_ASSERT(!DUK_ISINF(d));
-
- if (flags & DUK_DATE_FLAG_LOCALTIME) {
- /* Note: DST adjustment is determined using UTC time.
- * If 'd' is NaN, tzoffset will be 0.
- */
- tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d); /* seconds */
- d += tzoffset * 1000L;
- }
- if (out_tzoffset) {
- *out_tzoffset = tzoffset;
- }
-
- /* [ ... this ] */
- return d;
-}
-
-DUK_LOCAL duk_double_t duk__push_this_get_timeval(duk_context *ctx, duk_small_uint_t flags) {
- return duk__push_this_get_timeval_tzoffset(ctx, flags, NULL);
-}
-
-/* Set timeval to 'this' from dparts, push the new time value onto the
- * value stack and return 1 (caller can then tail call us). Expects
- * the value stack to contain 'this' on the stack top.
- */
-DUK_LOCAL duk_ret_t duk__set_this_timeval_from_dparts(duk_context *ctx, duk_double_t *dparts, duk_small_uint_t flags) {
- duk_double_t d;
-
- /* [ ... this ] */
-
- d = duk_bi_date_get_timeval_from_dparts(dparts, flags);
- duk_push_number(ctx, d); /* -> [ ... this timeval_new ] */
- duk_dup_top(ctx); /* -> [ ... this timeval_new timeval_new ] */
- duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE);
-
- /* stack top: new time value, return 1 to allow tail calls */
- return 1;
-}
-
-/* 'out_buf' must be at least DUK_BI_DATE_ISO8601_BUFSIZE long. */
-DUK_LOCAL void duk__format_parts_iso8601(duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags, duk_uint8_t *out_buf) {
- char yearstr[8]; /* "-123456\0" */
- char tzstr[8]; /* "+11:22\0" */
- char sep = (flags & DUK_DATE_FLAG_SEP_T) ? DUK_ASC_UC_T : DUK_ASC_SPACE;
-
- DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12);
- DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31);
- DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= -999999 && parts[DUK_DATE_IDX_YEAR] <= 999999);
-
- /* Note: %06d for positive value, %07d for negative value to include
- * sign and 6 digits.
- */
- DUK_SNPRINTF(yearstr,
- sizeof(yearstr),
- (parts[DUK_DATE_IDX_YEAR] >= 0 && parts[DUK_DATE_IDX_YEAR] <= 9999) ? "%04ld" :
- ((parts[DUK_DATE_IDX_YEAR] >= 0) ? "+%06ld" : "%07ld"),
- (long) parts[DUK_DATE_IDX_YEAR]);
- yearstr[sizeof(yearstr) - 1] = (char) 0;
-
- if (flags & DUK_DATE_FLAG_LOCALTIME) {
- /* tzoffset seconds are dropped; 16 bits suffice for
- * time offset in minutes
- */
- if (tzoffset >= 0) {
- duk_small_int_t tmp = tzoffset / 60;
- DUK_SNPRINTF(tzstr, sizeof(tzstr), "+%02d:%02d", (int) (tmp / 60), (int) (tmp % 60));
- } else {
- duk_small_int_t tmp = -tzoffset / 60;
- DUK_SNPRINTF(tzstr, sizeof(tzstr), "-%02d:%02d", (int) (tmp / 60), (int) (tmp % 60));
- }
- tzstr[sizeof(tzstr) - 1] = (char) 0;
- } else {
- tzstr[0] = DUK_ASC_UC_Z;
- tzstr[1] = (char) 0;
- }
-
- /* Unlike year, the other parts fit into 16 bits so %d format
- * is portable.
- */
- if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) {
- DUK_SPRINTF((char *) out_buf, "%s-%02d-%02d%c%02d:%02d:%02d.%03d%s",
- (const char *) yearstr, (int) parts[DUK_DATE_IDX_MONTH], (int) parts[DUK_DATE_IDX_DAY], (int) sep,
- (int) parts[DUK_DATE_IDX_HOUR], (int) parts[DUK_DATE_IDX_MINUTE],
- (int) parts[DUK_DATE_IDX_SECOND], (int) parts[DUK_DATE_IDX_MILLISECOND], (const char *) tzstr);
- } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) {
- DUK_SPRINTF((char *) out_buf, "%s-%02d-%02d",
- (const char *) yearstr, (int) parts[DUK_DATE_IDX_MONTH], (int) parts[DUK_DATE_IDX_DAY]);
- } else {
- DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME);
- DUK_SPRINTF((char *) out_buf, "%02d:%02d:%02d.%03d%s",
- (int) parts[DUK_DATE_IDX_HOUR], (int) parts[DUK_DATE_IDX_MINUTE],
- (int) parts[DUK_DATE_IDX_SECOND], (int) parts[DUK_DATE_IDX_MILLISECOND],
- (const char *) tzstr);
- }
-}
-
-/* Helper for string conversion calls: check 'this' binding, get the
- * internal time value, and format date and/or time in a few formats.
- * Return value allows tail calls.
- */
-DUK_LOCAL duk_ret_t duk__to_string_helper(duk_context *ctx, duk_small_uint_t flags) {
- duk_double_t d;
- duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
- duk_int_t tzoffset; /* seconds, doesn't fit into 16 bits */
- duk_bool_t rc;
- duk_uint8_t buf[DUK_BI_DATE_ISO8601_BUFSIZE];
-
- DUK_UNREF(rc); /* unreferenced with some options */
-
- d = duk__push_this_get_timeval_tzoffset(ctx, flags, &tzoffset);
- if (DUK_ISNAN(d)) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_INVALID_DATE);
- return 1;
- }
- DUK_ASSERT(DUK_ISFINITE(d));
-
- /* formatters always get one-based month/day-of-month */
- duk_bi_date_timeval_to_parts(d, parts, NULL, DUK_DATE_FLAG_ONEBASED);
- DUK_ASSERT(parts[DUK_DATE_IDX_MONTH] >= 1 && parts[DUK_DATE_IDX_MONTH] <= 12);
- DUK_ASSERT(parts[DUK_DATE_IDX_DAY] >= 1 && parts[DUK_DATE_IDX_DAY] <= 31);
-
- if (flags & DUK_DATE_FLAG_TOSTRING_LOCALE) {
- /* try locale specific formatter; if it refuses to format the
- * string, fall back to an ISO 8601 formatted value in local
- * time.
- */
-#if defined(DUK_USE_DATE_FORMAT_STRING)
- /* Contract, either:
- * - Push string to value stack and return 1
- * - Don't push anything and return 0
- */
-
- rc = DUK_USE_DATE_FORMAT_STRING(ctx, parts, tzoffset, flags);
- if (rc != 0) {
- return 1;
- }
-#else
- /* No locale specific formatter; this is OK, we fall back
- * to ISO 8601.
- */
-#endif
- }
-
- /* Different calling convention than above used because the helper
- * is shared.
- */
- duk__format_parts_iso8601(parts, tzoffset, flags, buf);
- duk_push_string(ctx, (const char *) buf);
- return 1;
-}
-
-/* Helper for component getter calls: check 'this' binding, get the
- * internal time value, split it into parts (either as UTC time or
- * local time), push a specified component as a return value to the
- * value stack and return 1 (caller can then tail call us).
- */
-DUK_LOCAL duk_ret_t duk__get_part_helper(duk_context *ctx, duk_small_uint_t flags_and_idx) {
- duk_double_t d;
- duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
- duk_small_uint_t idx_part = (duk_small_uint_t) (flags_and_idx >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */
-
- DUK_ASSERT_DISABLE(idx_part >= 0); /* unsigned */
- DUK_ASSERT(idx_part < DUK_DATE_IDX_NUM_PARTS);
-
- d = duk__push_this_get_timeval(ctx, flags_and_idx);
- if (DUK_ISNAN(d)) {
- duk_push_nan(ctx);
- return 1;
- }
- DUK_ASSERT(DUK_ISFINITE(d));
-
- duk_bi_date_timeval_to_parts(d, parts, NULL, flags_and_idx); /* no need to mask idx portion */
-
- /* Setter APIs detect special year numbers (0...99) and apply a +1900
- * only in certain cases. The legacy getYear() getter applies -1900
- * unconditionally.
- */
- duk_push_int(ctx, (flags_and_idx & DUK_DATE_FLAG_SUB1900) ? parts[idx_part] - 1900 : parts[idx_part]);
- return 1;
-}
-
-/* Helper for component setter calls: check 'this' binding, get the
- * internal time value, split it into parts (either as UTC time or
- * local time), modify one or more components as specified, recompute
- * the time value, set it as the internal value. Finally, push the
- * new time value as a return value to the value stack and return 1
- * (caller can then tail call us).
- */
-DUK_LOCAL duk_ret_t duk__set_part_helper(duk_context *ctx, duk_small_uint_t flags_and_maxnargs) {
- duk_double_t d;
- duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
- duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
- duk_idx_t nargs;
- duk_small_uint_t maxnargs = (duk_small_uint_t) (flags_and_maxnargs >> DUK_DATE_FLAG_VALUE_SHIFT); /* unpack args */
- duk_small_uint_t idx_first, idx;
- duk_small_uint_t i;
-
- nargs = duk_get_top(ctx);
- d = duk__push_this_get_timeval(ctx, flags_and_maxnargs);
- DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d));
-
- if (DUK_ISFINITE(d)) {
- duk_bi_date_timeval_to_parts(d, parts, dparts, flags_and_maxnargs);
- } else {
- /* NaN timevalue: we need to coerce the arguments, but
- * the resulting internal timestamp needs to remain NaN.
- * This works but is not pretty: parts and dparts will
- * be partially uninitialized, but we only write to them.
- */
- }
-
- /*
- * Determining which datetime components to overwrite based on
- * stack arguments is a bit complicated, but important to factor
- * out from setters themselves for compactness.
- *
- * If DUK_DATE_FLAG_TIMESETTER, maxnargs indicates setter type:
- *
- * 1 -> millisecond
- * 2 -> second, [millisecond]
- * 3 -> minute, [second], [millisecond]
- * 4 -> hour, [minute], [second], [millisecond]
- *
- * Else:
- *
- * 1 -> date
- * 2 -> month, [date]
- * 3 -> year, [month], [date]
- *
- * By comparing nargs and maxnargs (and flags) we know which
- * components to override. We rely on part index ordering.
- */
-
- if (flags_and_maxnargs & DUK_DATE_FLAG_TIMESETTER) {
- DUK_ASSERT(maxnargs >= 1 && maxnargs <= 4);
- idx_first = DUK_DATE_IDX_MILLISECOND - (maxnargs - 1);
- } else {
- DUK_ASSERT(maxnargs >= 1 && maxnargs <= 3);
- idx_first = DUK_DATE_IDX_DAY - (maxnargs - 1);
- }
- DUK_ASSERT_DISABLE(idx_first >= 0); /* unsigned */
- DUK_ASSERT(idx_first < DUK_DATE_IDX_NUM_PARTS);
-
- for (i = 0; i < maxnargs; i++) {
- if ((duk_idx_t) i >= nargs) {
- /* no argument given -> leave components untouched */
- break;
- }
- idx = idx_first + i;
- DUK_ASSERT_DISABLE(idx >= 0); /* unsigned */
- DUK_ASSERT(idx < DUK_DATE_IDX_NUM_PARTS);
-
- if (idx == DUK_DATE_IDX_YEAR && (flags_and_maxnargs & DUK_DATE_FLAG_YEAR_FIXUP)) {
- duk__twodigit_year_fixup(ctx, (duk_idx_t) i);
- }
-
- dparts[idx] = duk_to_number(ctx, i);
-
- if (idx == DUK_DATE_IDX_DAY) {
- /* Day-of-month is one-based in the API, but zero-based
- * internally, so fix here. Note that month is zero-based
- * both in the API and internally.
- */
- /* SCANBUILD: complains about use of uninitialized values.
- * The complaint is correct, but operating in undefined
- * values here is intentional in some cases and the caller
- * ignores the results.
- */
- dparts[idx] -= 1.0;
- }
- }
-
- /* Leaves new timevalue on stack top and returns 1, which is correct
- * for part setters.
- */
- if (DUK_ISFINITE(d)) {
- return duk__set_this_timeval_from_dparts(ctx, dparts, flags_and_maxnargs);
- } else {
- /* Internal timevalue is already NaN, so don't touch it. */
- duk_push_nan(ctx);
- return 1;
- }
-}
-
-/* Apply ToNumber() to specified index; if ToInteger(val) in [0,99], add
- * 1900 and replace value at idx_val.
- */
-DUK_LOCAL void duk__twodigit_year_fixup(duk_context *ctx, duk_idx_t idx_val) {
- duk_double_t d;
-
- /* XXX: idx_val would fit into 16 bits, but using duk_small_uint_t
- * might not generate better code due to casting.
- */
-
- /* E5 Sections 15.9.3.1, B.2.4, B.2.5 */
- duk_to_number(ctx, idx_val);
- if (duk_is_nan(ctx, idx_val)) {
- return;
- }
- duk_dup(ctx, idx_val);
- duk_to_int(ctx, -1);
- d = duk_get_number(ctx, -1); /* get as double to handle huge numbers correctly */
- if (d >= 0.0 && d <= 99.0) {
- d += 1900.0;
- duk_push_number(ctx, d);
- duk_replace(ctx, idx_val);
- }
- duk_pop(ctx);
-}
-
-/* Set datetime parts from stack arguments, defaulting any missing values.
- * Day-of-week is not set; it is not required when setting the time value.
- */
-DUK_LOCAL void duk__set_parts_from_args(duk_context *ctx, duk_double_t *dparts, duk_idx_t nargs) {
- duk_double_t d;
- duk_small_uint_t i;
- duk_small_uint_t idx;
-
- /* Causes a ToNumber() coercion, but doesn't break coercion order since
- * year is coerced first anyway.
- */
- duk__twodigit_year_fixup(ctx, 0);
-
- /* There are at most 7 args, but we use 8 here so that also
- * DUK_DATE_IDX_WEEKDAY gets initialized (to zero) to avoid the potential
- * for any Valgrind gripes later.
- */
- for (i = 0; i < 8; i++) {
- /* Note: rely on index ordering */
- idx = DUK_DATE_IDX_YEAR + i;
- if ((duk_idx_t) i < nargs) {
- d = duk_to_number(ctx, (duk_idx_t) i);
- if (idx == DUK_DATE_IDX_DAY) {
- /* Convert day from one-based to zero-based (internal). This may
- * cause the day part to be negative, which is OK.
- */
- d -= 1.0;
- }
- } else {
- /* All components default to 0 except day-of-month which defaults
- * to 1. However, because our internal day-of-month is zero-based,
- * it also defaults to zero here.
- */
- d = 0.0;
- }
- dparts[idx] = d;
- }
-
- DUK_DDD(DUK_DDDPRINT("parts from args -> %lf %lf %lf %lf %lf %lf %lf %lf",
- (double) dparts[0], (double) dparts[1],
- (double) dparts[2], (double) dparts[3],
- (double) dparts[4], (double) dparts[5],
- (double) dparts[6], (double) dparts[7]));
-}
-
-/*
- * Helper to format a time value into caller buffer, used by logging.
- * 'out_buf' must be at least DUK_BI_DATE_ISO8601_BUFSIZE long.
- */
-
-DUK_INTERNAL void duk_bi_date_format_timeval(duk_double_t timeval, duk_uint8_t *out_buf) {
- duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
-
- duk_bi_date_timeval_to_parts(timeval,
- parts,
- NULL,
- DUK_DATE_FLAG_ONEBASED);
-
- duk__format_parts_iso8601(parts,
- 0 /*tzoffset*/,
- DUK_DATE_FLAG_TOSTRING_DATE |
- DUK_DATE_FLAG_TOSTRING_TIME |
- DUK_DATE_FLAG_SEP_T /*flags*/,
- out_buf);
-}
-
-/*
- * Indirect magic value lookup for Date methods.
- *
- * Date methods don't put their control flags into the function magic value
- * because they wouldn't fit into a LIGHTFUNC's magic field. Instead, the
- * magic value is set to an index pointing to the array of control flags
- * below.
- *
- * This must be kept in strict sync with genbuiltins.py!
- */
-
-static duk_uint16_t duk__date_magics[] = {
- /* 0: toString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME,
-
- /* 1: toDateString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_LOCALTIME,
-
- /* 2: toTimeString */
- DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_LOCALTIME,
-
- /* 3: toLocaleString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME,
-
- /* 4: toLocaleDateString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME,
-
- /* 5: toLocaleTimeString */
- DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_TOSTRING_LOCALE + DUK_DATE_FLAG_LOCALTIME,
-
- /* 6: toUTCString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME,
-
- /* 7: toISOString */
- DUK_DATE_FLAG_TOSTRING_DATE + DUK_DATE_FLAG_TOSTRING_TIME + DUK_DATE_FLAG_NAN_TO_RANGE_ERROR + DUK_DATE_FLAG_SEP_T,
-
- /* 8: getFullYear */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 9: getUTCFullYear */
- 0 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 10: getMonth */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 11: getUTCMonth */
- 0 + (DUK_DATE_IDX_MONTH << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 12: getDate */
- DUK_DATE_FLAG_ONEBASED + DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 13: getUTCDate */
- DUK_DATE_FLAG_ONEBASED + (DUK_DATE_IDX_DAY << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 14: getDay */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 15: getUTCDay */
- 0 + (DUK_DATE_IDX_WEEKDAY << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 16: getHours */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 17: getUTCHours */
- 0 + (DUK_DATE_IDX_HOUR << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 18: getMinutes */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 19: getUTCMinutes */
- 0 + (DUK_DATE_IDX_MINUTE << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 20: getSeconds */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 21: getUTCSeconds */
- 0 + (DUK_DATE_IDX_SECOND << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 22: getMilliseconds */
- DUK_DATE_FLAG_LOCALTIME + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 23: getUTCMilliseconds */
- 0 + (DUK_DATE_IDX_MILLISECOND << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 24: setMilliseconds */
- DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 25: setUTCMilliseconds */
- DUK_DATE_FLAG_TIMESETTER + (1 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 26: setSeconds */
- DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 27: setUTCSeconds */
- DUK_DATE_FLAG_TIMESETTER + (2 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 28: setMinutes */
- DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 29: setUTCMinutes */
- DUK_DATE_FLAG_TIMESETTER + (3 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 30: setHours */
- DUK_DATE_FLAG_TIMESETTER + DUK_DATE_FLAG_LOCALTIME + (4 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 31: setUTCHours */
- DUK_DATE_FLAG_TIMESETTER + (4 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 32: setDate */
- DUK_DATE_FLAG_LOCALTIME + (1 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 33: setUTCDate */
- 0 + (1 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 34: setMonth */
- DUK_DATE_FLAG_LOCALTIME + (2 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 35: setUTCMonth */
- 0 + (2 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 36: setFullYear */
- DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_LOCALTIME + (3 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 37: setUTCFullYear */
- DUK_DATE_FLAG_NAN_TO_ZERO + (3 << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 38: getYear */
- DUK_DATE_FLAG_LOCALTIME + DUK_DATE_FLAG_SUB1900 + (DUK_DATE_IDX_YEAR << DUK_DATE_FLAG_VALUE_SHIFT),
-
- /* 39: setYear */
- DUK_DATE_FLAG_NAN_TO_ZERO + DUK_DATE_FLAG_YEAR_FIXUP + (3 << DUK_DATE_FLAG_VALUE_SHIFT),
-};
-
-DUK_LOCAL duk_small_uint_t duk__date_get_indirect_magic(duk_context *ctx) {
- duk_small_int_t magicidx = (duk_small_uint_t) duk_get_current_magic(ctx);
- DUK_ASSERT(magicidx >= 0 && magicidx < (duk_small_int_t) (sizeof(duk__date_magics) / sizeof(duk_uint16_t)));
- return (duk_small_uint_t) duk__date_magics[magicidx];
-}
-
-/*
- * Constructor calls
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_date_constructor(duk_context *ctx) {
- duk_idx_t nargs = duk_get_top(ctx);
- duk_bool_t is_cons = duk_is_constructor_call(ctx);
- duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
- duk_double_t d;
-
- DUK_DDD(DUK_DDDPRINT("Date constructor, nargs=%ld, is_cons=%ld", (long) nargs, (long) is_cons));
-
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DATE),
- DUK_BIDX_DATE_PROTOTYPE);
-
- /* Unlike most built-ins, the internal [[PrimitiveValue]] of a Date
- * is mutable.
- */
-
- if (nargs == 0 || !is_cons) {
- d = duk__timeclip(DUK_USE_DATE_GET_NOW(ctx));
- duk_push_number(ctx, d);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W);
- if (!is_cons) {
- /* called as a normal function: return new Date().toString() */
- duk_to_string(ctx, -1);
- }
- return 1;
- } else if (nargs == 1) {
- duk_to_primitive(ctx, 0, DUK_HINT_NONE);
- if (duk_is_string(ctx, 0)) {
- duk__parse_string(ctx, duk_to_string(ctx, 0));
- duk_replace(ctx, 0); /* may be NaN */
- }
- d = duk__timeclip(duk_to_number(ctx, 0));
- duk_push_number(ctx, d);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_W);
- return 1;
- }
-
- duk__set_parts_from_args(ctx, dparts, nargs);
-
- /* Parts are in local time, convert when setting. */
-
- (void) duk__set_this_timeval_from_dparts(ctx, dparts, DUK_DATE_FLAG_LOCALTIME /*flags*/); /* -> [ ... this timeval ] */
- duk_pop(ctx); /* -> [ ... this ] */
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_constructor_parse(duk_context *ctx) {
- return duk__parse_string(ctx, duk_to_string(ctx, 0));
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_constructor_utc(duk_context *ctx) {
- duk_idx_t nargs = duk_get_top(ctx);
- duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
- duk_double_t d;
-
- /* Behavior for nargs < 2 is implementation dependent: currently we'll
- * set a NaN time value (matching V8 behavior) in this case.
- */
-
- if (nargs < 2) {
- duk_push_nan(ctx);
- } else {
- duk__set_parts_from_args(ctx, dparts, nargs);
- d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/);
- duk_push_number(ctx, d);
- }
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_constructor_now(duk_context *ctx) {
- duk_double_t d;
-
- d = DUK_USE_DATE_GET_NOW(ctx);
- DUK_ASSERT(duk__timeclip(d) == d); /* TimeClip() should never be necessary */
- duk_push_number(ctx, d);
- return 1;
-}
-
-/*
- * String/JSON conversions
- *
- * Human readable conversions are now basically ISO 8601 with a space
- * (instead of 'T') as the date/time separator. This is a good baseline
- * and is platform independent.
- *
- * A shared native helper to provide many conversions. Magic value contains
- * a set of flags. The helper provides:
- *
- * toString()
- * toDateString()
- * toTimeString()
- * toLocaleString()
- * toLocaleDateString()
- * toLocaleTimeString()
- * toUTCString()
- * toISOString()
- *
- * Notes:
- *
- * - Date.prototype.toGMTString() and Date.prototype.toUTCString() are
- * required to be the same Ecmascript function object (!), so it is
- * omitted from here.
- *
- * - Date.prototype.toUTCString(): E5.1 specification does not require a
- * specific format, but result should be human readable. The
- * specification suggests using ISO 8601 format with a space (instead
- * of 'T') separator if a more human readable format is not available.
- *
- * - Date.prototype.toISOString(): unlike other conversion functions,
- * toISOString() requires a RangeError for invalid date values.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_tostring_shared(duk_context *ctx) {
- duk_small_uint_t flags = duk__date_get_indirect_magic(ctx);
- return duk__to_string_helper(ctx, flags);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_value_of(duk_context *ctx) {
- /* This native function is also used for Date.prototype.getTime()
- * as their behavior is identical.
- */
-
- duk_double_t d = duk__push_this_get_timeval(ctx, 0 /*flags*/); /* -> [ this ] */
- DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d));
- duk_push_number(ctx, d);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_to_json(duk_context *ctx) {
- /* Note: toJSON() is a generic function which works even if 'this'
- * is not a Date. The sole argument is ignored.
- */
-
- duk_push_this(ctx);
- duk_to_object(ctx, -1);
-
- duk_dup_top(ctx);
- duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
- if (duk_is_number(ctx, -1)) {
- duk_double_t d = duk_get_number(ctx, -1);
- if (!DUK_ISFINITE(d)) {
- duk_push_null(ctx);
- return 1;
- }
- }
- duk_pop(ctx);
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_TO_ISO_STRING);
- duk_dup(ctx, -2); /* -> [ O toIsoString O ] */
- duk_call_method(ctx, 0);
- return 1;
-}
-
-/*
- * Getters.
- *
- * Implementing getters is quite easy. The internal time value is either
- * NaN, or represents milliseconds (without fractions) from Jan 1, 1970.
- * The internal time value can be converted to integer parts, and each
- * part will be normalized and will fit into a 32-bit signed integer.
- *
- * A shared native helper to provide all getters. Magic value contains
- * a set of flags and also packs the date component index argument. The
- * helper provides:
- *
- * getFullYear()
- * getUTCFullYear()
- * getMonth()
- * getUTCMonth()
- * getDate()
- * getUTCDate()
- * getDay()
- * getUTCDay()
- * getHours()
- * getUTCHours()
- * getMinutes()
- * getUTCMinutes()
- * getSeconds()
- * getUTCSeconds()
- * getMilliseconds()
- * getUTCMilliseconds()
- * getYear()
- *
- * Notes:
- *
- * - Date.prototype.getDate(): 'date' means day-of-month, and is
- * zero-based in internal calculations but public API expects it to
- * be one-based.
- *
- * - Date.prototype.getTime() and Date.prototype.valueOf() have identical
- * behavior. They have separate function objects, but share the same C
- * function (duk_bi_date_prototype_value_of).
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_shared(duk_context *ctx) {
- duk_small_uint_t flags_and_idx = duk__date_get_indirect_magic(ctx);
- return duk__get_part_helper(ctx, flags_and_idx);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_get_timezone_offset(duk_context *ctx) {
- /*
- * Return (t - LocalTime(t)) in minutes:
- *
- * t - LocalTime(t) = t - (t + LocalTZA + DaylightSavingTA(t))
- * = -(LocalTZA + DaylightSavingTA(t))
- *
- * where DaylightSavingTA() is checked for time 't'.
- *
- * Note that the sign of the result is opposite to common usage,
- * e.g. for EE(S)T which normally is +2h or +3h from UTC, this
- * function returns -120 or -180.
- *
- */
-
- duk_double_t d;
- duk_int_t tzoffset;
-
- /* Note: DST adjustment is determined using UTC time. */
- d = duk__push_this_get_timeval(ctx, 0 /*flags*/);
- DUK_ASSERT(DUK_ISFINITE(d) || DUK_ISNAN(d));
- if (DUK_ISNAN(d)) {
- duk_push_nan(ctx);
- } else {
- DUK_ASSERT(DUK_ISFINITE(d));
- tzoffset = DUK_USE_DATE_GET_LOCAL_TZOFFSET(d);
- duk_push_int(ctx, -tzoffset / 60);
- }
- return 1;
-}
-
-/*
- * Setters.
- *
- * Setters are a bit more complicated than getters. Component setters
- * break down the current time value into its (normalized) component
- * parts, replace one or more components with -unnormalized- new values,
- * and the components are then converted back into a time value. As an
- * example of using unnormalized values:
- *
- * var d = new Date(1234567890);
- *
- * is equivalent to:
- *
- * var d = new Date(0);
- * d.setUTCMilliseconds(1234567890);
- *
- * A shared native helper to provide almost all setters. Magic value
- * contains a set of flags and also packs the "maxnargs" argument. The
- * helper provides:
- *
- * setMilliseconds()
- * setUTCMilliseconds()
- * setSeconds()
- * setUTCSeconds()
- * setMinutes()
- * setUTCMinutes()
- * setHours()
- * setUTCHours()
- * setDate()
- * setUTCDate()
- * setMonth()
- * setUTCMonth()
- * setFullYear()
- * setUTCFullYear()
- * setYear()
- *
- * Notes:
- *
- * - Date.prototype.setYear() (Section B addition): special year check
- * is omitted. NaN / Infinity will just flow through and ultimately
- * result in a NaN internal time value.
- *
- * - Date.prototype.setYear() does not have optional arguments for
- * setting month and day-in-month (like setFullYear()), but we indicate
- * 'maxnargs' to be 3 to get the year written to the correct component
- * index in duk__set_part_helper(). The function has nargs == 1, so only
- * the year will be set regardless of actual argument count.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_shared(duk_context *ctx) {
- duk_small_uint_t flags_and_maxnargs = duk__date_get_indirect_magic(ctx);
- return duk__set_part_helper(ctx, flags_and_maxnargs);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_date_prototype_set_time(duk_context *ctx) {
- duk_double_t d;
-
- (void) duk__push_this_get_timeval(ctx, 0 /*flags*/); /* -> [ timeval this ] */
- d = duk__timeclip(duk_to_number(ctx, 0));
- duk_push_number(ctx, d);
- duk_dup_top(ctx);
- duk_put_prop_stridx(ctx, -3, DUK_STRIDX_INT_VALUE); /* -> [ timeval this timeval ] */
-
- return 1;
-}
-#line 1 "duk_bi_date_unix.c"
-/*
- * Unix-like Date providers
- *
- * Generally useful Unix / POSIX / ANSI Date providers.
- */
-
-/* include removed: duk_internal.h */
-
-/* The necessary #includes are in place in duk_config.h. */
-
-/* Buffer sizes for some UNIX calls. Larger than strictly necessary
- * to avoid Valgrind errors.
- */
-#define DUK__STRPTIME_BUF_SIZE 64
-#define DUK__STRFTIME_BUF_SIZE 64
-
-#if defined(DUK_USE_DATE_NOW_GETTIMEOFDAY)
-/* Get current Ecmascript time (= UNIX/Posix time, but in milliseconds). */
-DUK_INTERNAL duk_double_t duk_bi_date_get_now_gettimeofday(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- struct timeval tv;
- duk_double_t d;
-
- if (gettimeofday(&tv, NULL) != 0) {
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- }
-
- d = ((duk_double_t) tv.tv_sec) * 1000.0 +
- ((duk_double_t) (tv.tv_usec / 1000));
- DUK_ASSERT(DUK_FLOOR(d) == d); /* no fractions */
-
- return d;
-}
-#endif /* DUK_USE_DATE_NOW_GETTIMEOFDAY */
-
-#if defined(DUK_USE_DATE_NOW_TIME)
-/* Not a very good provider: only full seconds are available. */
-DUK_INTERNAL duk_double_t duk_bi_date_get_now_time(duk_context *ctx) {
- time_t t;
-
- DUK_UNREF(ctx);
- t = time(NULL);
- return ((duk_double_t) t) * 1000.0;
-}
-#endif /* DUK_USE_DATE_NOW_TIME */
-
-#if defined(DUK_USE_DATE_TZO_GMTIME) || defined(DUK_USE_DATE_TZO_GMTIME_R)
-/* Get local time offset (in seconds) for a certain (UTC) instant 'd'. */
-DUK_INTERNAL duk_int_t duk_bi_date_get_local_tzoffset_gmtime(duk_double_t d) {
- time_t t, t1, t2;
- duk_int_t parts[DUK_DATE_IDX_NUM_PARTS];
- duk_double_t dparts[DUK_DATE_IDX_NUM_PARTS];
- struct tm tms[2];
-#ifdef DUK_USE_DATE_TZO_GMTIME
- struct tm *tm_ptr;
-#endif
-
- /* For NaN/inf, the return value doesn't matter. */
- if (!DUK_ISFINITE(d)) {
- return 0;
- }
-
- /* If not within Ecmascript range, some integer time calculations
- * won't work correctly (and some asserts will fail), so bail out
- * if so. This fixes test-bug-date-insane-setyear.js. There is
- * a +/- 24h leeway in this range check to avoid a test262 corner
- * case documented in test-bug-date-timeval-edges.js.
- */
- if (!duk_bi_date_timeval_in_leeway_range(d)) {
- DUK_DD(DUK_DDPRINT("timeval not within valid range, skip tzoffset computation to avoid integer overflows"));
- return 0;
- }
-
- /*
- * This is a bit tricky to implement portably. The result depends
- * on the timestamp (specifically, DST depends on the timestamp).
- * If e.g. UNIX APIs are used, they'll have portability issues with
- * very small and very large years.
- *
- * Current approach:
- *
- * - Stay within portable UNIX limits by using equivalent year mapping.
- * Avoid year 1970 and 2038 as some conversions start to fail, at
- * least on some platforms. Avoiding 1970 means that there are
- * currently DST discrepancies for 1970.
- *
- * - Create a UTC and local time breakdowns from 't'. Then create
- * a time_t using gmtime() and localtime() and compute the time
- * difference between the two.
- *
- * Equivalent year mapping (E5 Section 15.9.1.8):
- *
- * If the host environment provides functionality for determining
- * daylight saving time, the implementation of ECMAScript is free
- * to map the year in question to an equivalent year (same
- * leap-year-ness and same starting week day for the year) for which
- * the host environment provides daylight saving time information.
- * The only restriction is that all equivalent years should produce
- * the same result.
- *
- * This approach is quite reasonable but not entirely correct, e.g.
- * the specification also states (E5 Section 15.9.1.8):
- *
- * The implementation of ECMAScript should not try to determine
- * whether the exact time was subject to daylight saving time, but
- * just whether daylight saving time would have been in effect if
- * the _current daylight saving time algorithm_ had been used at the
- * time. This avoids complications such as taking into account the
- * years that the locale observed daylight saving time year round.
- *
- * Since we rely on the platform APIs for conversions between local
- * time and UTC, we can't guarantee the above. Rather, if the platform
- * has historical DST rules they will be applied. This seems to be the
- * general preferred direction in Ecmascript standardization (or at least
- * implementations) anyway, and even the equivalent year mapping should
- * be disabled if the platform is known to handle DST properly for the
- * full Ecmascript range.
- *
- * The following has useful discussion and links:
- *
- * https://bugzilla.mozilla.org/show_bug.cgi?id=351066
- */
-
- duk_bi_date_timeval_to_parts(d, parts, dparts, DUK_DATE_FLAG_EQUIVYEAR /*flags*/);
- DUK_ASSERT(parts[DUK_DATE_IDX_YEAR] >= 1970 && parts[DUK_DATE_IDX_YEAR] <= 2038);
-
- d = duk_bi_date_get_timeval_from_dparts(dparts, 0 /*flags*/);
- DUK_ASSERT(d >= 0 && d < 2147483648.0 * 1000.0); /* unsigned 31-bit range */
- t = (time_t) (d / 1000.0);
- DUK_DDD(DUK_DDDPRINT("timeval: %lf -> time_t %ld", (double) d, (long) t));
-
- DUK_MEMZERO((void *) tms, sizeof(struct tm) * 2);
-
-#if defined(DUK_USE_DATE_TZO_GMTIME_R)
- (void) gmtime_r(&t, &tms[0]);
- (void) localtime_r(&t, &tms[1]);
-#elif defined(DUK_USE_DATE_TZO_GMTIME)
- tm_ptr = gmtime(&t);
- DUK_MEMCPY((void *) &tms[0], tm_ptr, sizeof(struct tm));
- tm_ptr = localtime(&t);
- DUK_MEMCPY((void *) &tms[1], tm_ptr, sizeof(struct tm));
-#else
-#error internal error
-#endif
- DUK_DDD(DUK_DDDPRINT("gmtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld,"
- "wday:%ld,yday:%ld,isdst:%ld}",
- (long) tms[0].tm_sec, (long) tms[0].tm_min, (long) tms[0].tm_hour,
- (long) tms[0].tm_mday, (long) tms[0].tm_mon, (long) tms[0].tm_year,
- (long) tms[0].tm_wday, (long) tms[0].tm_yday, (long) tms[0].tm_isdst));
- DUK_DDD(DUK_DDDPRINT("localtime result: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld,"
- "wday:%ld,yday:%ld,isdst:%ld}",
- (long) tms[1].tm_sec, (long) tms[1].tm_min, (long) tms[1].tm_hour,
- (long) tms[1].tm_mday, (long) tms[1].tm_mon, (long) tms[1].tm_year,
- (long) tms[1].tm_wday, (long) tms[1].tm_yday, (long) tms[1].tm_isdst));
-
- /* tm_isdst is both an input and an output to mktime(), use 0 to
- * avoid DST handling in mktime():
- * - https://github.com/svaarala/duktape/issues/406
- * - http://stackoverflow.com/questions/8558919/mktime-and-tm-isdst
- */
- tms[0].tm_isdst = 0;
- tms[1].tm_isdst = 0;
- t1 = mktime(&tms[0]); /* UTC */
- t2 = mktime(&tms[1]); /* local */
- if (t1 == (time_t) -1 || t2 == (time_t) -1) {
- /* This check used to be for (t < 0) but on some platforms
- * time_t is unsigned and apparently the proper way to detect
- * an mktime() error return is the cast above. See e.g.:
- * http://pubs.opengroup.org/onlinepubs/009695299/functions/mktime.html
- */
- goto error;
- }
- DUK_DDD(DUK_DDDPRINT("t1=%ld (utc), t2=%ld (local)", (long) t1, (long) t2));
-
- /* Compute final offset in seconds, positive if local time ahead of
- * UTC (returned value is UTC-to-local offset).
- *
- * difftime() returns a double, so coercion to int generates quite
- * a lot of code. Direct subtraction is not portable, however.
- * XXX: allow direct subtraction on known platforms.
- */
-#if 0
- return (duk_int_t) (t2 - t1);
-#endif
- return (duk_int_t) difftime(t2, t1);
-
- error:
- /* XXX: return something more useful, so that caller can throw? */
- DUK_D(DUK_DPRINT("mktime() failed, d=%lf", (double) d));
- return 0;
-}
-#endif /* DUK_USE_DATE_TZO_GMTIME */
-
-#if defined(DUK_USE_DATE_PRS_STRPTIME)
-DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_strptime(duk_context *ctx, const char *str) {
- struct tm tm;
- time_t t;
- char buf[DUK__STRPTIME_BUF_SIZE];
-
- /* copy to buffer with spare to avoid Valgrind gripes from strptime */
- DUK_ASSERT(str != NULL);
- DUK_MEMZERO(buf, sizeof(buf)); /* valgrind whine without this */
- DUK_SNPRINTF(buf, sizeof(buf), "%s", (const char *) str);
- buf[sizeof(buf) - 1] = (char) 0;
-
- DUK_DDD(DUK_DDDPRINT("parsing: '%s'", (const char *) buf));
-
- DUK_MEMZERO(&tm, sizeof(tm));
- if (strptime((const char *) buf, "%c", &tm) != NULL) {
- DUK_DDD(DUK_DDDPRINT("before mktime: tm={sec:%ld,min:%ld,hour:%ld,mday:%ld,mon:%ld,year:%ld,"
- "wday:%ld,yday:%ld,isdst:%ld}",
- (long) tm.tm_sec, (long) tm.tm_min, (long) tm.tm_hour,
- (long) tm.tm_mday, (long) tm.tm_mon, (long) tm.tm_year,
- (long) tm.tm_wday, (long) tm.tm_yday, (long) tm.tm_isdst));
- tm.tm_isdst = -1; /* negative: dst info not available */
-
- t = mktime(&tm);
- DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t));
- if (t >= 0) {
- duk_push_number(ctx, ((duk_double_t) t) * 1000.0);
- return 1;
- }
- }
-
- return 0;
-}
-#endif /* DUK_USE_DATE_PRS_STRPTIME */
-
-#if defined(DUK_USE_DATE_PRS_GETDATE)
-DUK_INTERNAL duk_bool_t duk_bi_date_parse_string_getdate(duk_context *ctx, const char *str) {
- struct tm tm;
- duk_small_int_t rc;
- time_t t;
-
- /* For this to work, DATEMSK must be set, so this is not very
- * convenient for an embeddable interpreter.
- */
-
- DUK_MEMZERO(&tm, sizeof(struct tm));
- rc = (duk_small_int_t) getdate_r(str, &tm);
- DUK_DDD(DUK_DDDPRINT("getdate_r() -> %ld", (long) rc));
-
- if (rc == 0) {
- t = mktime(&tm);
- DUK_DDD(DUK_DDDPRINT("mktime() -> %ld", (long) t));
- if (t >= 0) {
- duk_push_number(ctx, (duk_double_t) t);
- return 1;
- }
- }
-
- return 0;
-}
-#endif /* DUK_USE_DATE_PRS_GETDATE */
-
-#if defined(DUK_USE_DATE_FMT_STRFTIME)
-DUK_INTERNAL duk_bool_t duk_bi_date_format_parts_strftime(duk_context *ctx, duk_int_t *parts, duk_int_t tzoffset, duk_small_uint_t flags) {
- char buf[DUK__STRFTIME_BUF_SIZE];
- struct tm tm;
- const char *fmt;
-
- DUK_UNREF(tzoffset);
-
- /* If the platform doesn't support the entire Ecmascript range, we need
- * to return 0 so that the caller can fall back to the default formatter.
- *
- * For now, assume that if time_t is 8 bytes or more, the whole Ecmascript
- * range is supported. For smaller time_t values (4 bytes in practice),
- * assumes that the signed 32-bit range is supported.
- *
- * XXX: detect this more correctly per platform. The size of time_t is
- * probably not an accurate guarantee of strftime() supporting or not
- * supporting a large time range (the full Ecmascript range).
- */
- if (sizeof(time_t) < 8 &&
- (parts[DUK_DATE_IDX_YEAR] < 1970 || parts[DUK_DATE_IDX_YEAR] > 2037)) {
- /* be paranoid for 32-bit time values (even avoiding negative ones) */
- return 0;
- }
-
- DUK_MEMZERO(&tm, sizeof(tm));
- tm.tm_sec = parts[DUK_DATE_IDX_SECOND];
- tm.tm_min = parts[DUK_DATE_IDX_MINUTE];
- tm.tm_hour = parts[DUK_DATE_IDX_HOUR];
- tm.tm_mday = parts[DUK_DATE_IDX_DAY]; /* already one-based */
- tm.tm_mon = parts[DUK_DATE_IDX_MONTH] - 1; /* one-based -> zero-based */
- tm.tm_year = parts[DUK_DATE_IDX_YEAR] - 1900;
- tm.tm_wday = parts[DUK_DATE_IDX_WEEKDAY];
- tm.tm_isdst = 0;
-
- DUK_MEMZERO(buf, sizeof(buf));
- if ((flags & DUK_DATE_FLAG_TOSTRING_DATE) && (flags & DUK_DATE_FLAG_TOSTRING_TIME)) {
- fmt = "%c";
- } else if (flags & DUK_DATE_FLAG_TOSTRING_DATE) {
- fmt = "%x";
- } else {
- DUK_ASSERT(flags & DUK_DATE_FLAG_TOSTRING_TIME);
- fmt = "%X";
- }
- (void) strftime(buf, sizeof(buf) - 1, fmt, &tm);
- DUK_ASSERT(buf[sizeof(buf) - 1] == 0);
-
- duk_push_string(ctx, buf);
- return 1;
-}
-#endif /* DUK_USE_DATE_FMT_STRFTIME */
-
-#undef DUK__STRPTIME_BUF_SIZE
-#undef DUK__STRFTIME_BUF_SIZE
-#line 1 "duk_bi_date_windows.c"
-/*
- * Windows Date providers
- *
- * Platform specific links:
- *
- * - http://msdn.microsoft.com/en-us/library/windows/desktop/ms725473(v=vs.85).aspx
- */
-
-/* include removed: duk_internal.h */
-
-/* The necessary #includes are in place in duk_config.h. */
-
-#if defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS)
-/* Shared Windows helpers. */
-DUK_LOCAL void duk__convert_systime_to_ularge(const SYSTEMTIME *st, ULARGE_INTEGER *res) {
- FILETIME ft;
- if (SystemTimeToFileTime(st, &ft) == 0) {
- DUK_D(DUK_DPRINT("SystemTimeToFileTime() failed, returning 0"));
- res->QuadPart = 0;
- } else {
- res->LowPart = ft.dwLowDateTime;
- res->HighPart = ft.dwHighDateTime;
- }
-}
-DUK_LOCAL void duk__set_systime_jan1970(SYSTEMTIME *st) {
- DUK_MEMZERO((void *) st, sizeof(*st));
- st->wYear = 1970;
- st->wMonth = 1;
- st->wDayOfWeek = 4; /* not sure whether or not needed; Thursday */
- st->wDay = 1;
- DUK_ASSERT(st->wHour == 0);
- DUK_ASSERT(st->wMinute == 0);
- DUK_ASSERT(st->wSecond == 0);
- DUK_ASSERT(st->wMilliseconds == 0);
-}
-#endif /* defined(DUK_USE_DATE_NOW_WINDOWS) || defined(DUK_USE_DATE_TZO_WINDOWS) */
-
-#ifdef DUK_USE_DATE_NOW_WINDOWS
-DUK_INTERNAL duk_double_t duk_bi_date_get_now_windows(duk_context *ctx) {
- /* Suggested step-by-step method from documentation of RtlTimeToSecondsSince1970:
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724928(v=vs.85).aspx
- */
- SYSTEMTIME st1, st2;
- ULARGE_INTEGER tmp1, tmp2;
-
- DUK_UNREF(ctx);
-
- GetSystemTime(&st1);
- duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1);
-
- duk__set_systime_jan1970(&st2);
- duk__convert_systime_to_ularge((const SYSTEMTIME *) &st2, &tmp2);
-
- /* Difference is in 100ns units, convert to milliseconds w/o fractions */
- return (duk_double_t) ((tmp1.QuadPart - tmp2.QuadPart) / 10000LL);
-}
-#endif /* DUK_USE_DATE_NOW_WINDOWS */
-
-
-#if defined(DUK_USE_DATE_TZO_WINDOWS)
-DUK_INTERNAL_DECL duk_int_t duk_bi_date_get_local_tzoffset_windows(duk_double_t d) {
- SYSTEMTIME st1;
- SYSTEMTIME st2;
- SYSTEMTIME st3;
- ULARGE_INTEGER tmp1;
- ULARGE_INTEGER tmp2;
- ULARGE_INTEGER tmp3;
- FILETIME ft1;
-
- /* XXX: handling of timestamps outside Windows supported range.
- * How does Windows deal with dates before 1600? Does windows
- * support all Ecmascript years (like -200000 and +200000)?
- * Should equivalent year mapping be used here too? If so, use
- * a shared helper (currently integrated into timeval-to-parts).
- */
-
- /* Use the approach described in "Remarks" of FileTimeToLocalFileTime:
- * http://msdn.microsoft.com/en-us/library/windows/desktop/ms724277(v=vs.85).aspx
- */
-
- duk__set_systime_jan1970(&st1);
- duk__convert_systime_to_ularge((const SYSTEMTIME *) &st1, &tmp1);
- tmp2.QuadPart = (ULONGLONG) (d * 10000.0); /* millisec -> 100ns units since jan 1, 1970 */
- tmp2.QuadPart += tmp1.QuadPart; /* input 'd' in Windows UTC, 100ns units */
-
- ft1.dwLowDateTime = tmp2.LowPart;
- ft1.dwHighDateTime = tmp2.HighPart;
- FileTimeToSystemTime((const FILETIME *) &ft1, &st2);
- if (SystemTimeToTzSpecificLocalTime((LPTIME_ZONE_INFORMATION) NULL, &st2, &st3) == 0) {
- DUK_D(DUK_DPRINT("SystemTimeToTzSpecificLocalTime() failed, return tzoffset 0"));
- return 0;
- }
- duk__convert_systime_to_ularge((const SYSTEMTIME *) &st3, &tmp3);
-
- /* Positive if local time ahead of UTC. */
- return (duk_int_t) (((LONGLONG) tmp3.QuadPart - (LONGLONG) tmp2.QuadPart) / 10000000LL); /* seconds */
-}
-#endif /* DUK_USE_DATE_TZO_WINDOWS */
-#line 1 "duk_bi_duktape.c"
-/*
- * Duktape built-ins
- *
- * Size optimization note: it might seem that vararg multipurpose functions
- * like fin(), enc(), and dec() are not very size optimal, but using a single
- * user-visible Ecmascript function saves a lot of run-time footprint; each
- * Function instance takes >100 bytes. Using a shared native helper and a
- * 'magic' value won't save much if there are multiple Function instances
- * anyway.
- */
-
-/* include removed: duk_internal.h */
-
-/* Raw helper to extract internal information / statistics about a value.
- * The return values are version specific and must not expose anything
- * that would lead to security issues (e.g. exposing compiled function
- * 'data' buffer might be an issue). Currently only counts and sizes and
- * such are given so there should not be a security impact.
- */
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_info(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv;
- duk_heaphdr *h;
- duk_int_t i, n;
-
- DUK_UNREF(thr);
-
- /* result array */
- duk_push_array(ctx); /* -> [ val arr ] */
-
- /* type tag (public) */
- duk_push_int(ctx, duk_get_type(ctx, 0));
-
- /* address */
- tv = duk_get_tval(ctx, 0);
- DUK_ASSERT(tv != NULL); /* because arg count is 1 */
- if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- h = DUK_TVAL_GET_HEAPHDR(tv);
- duk_push_pointer(ctx, (void *) h);
- } else {
- /* internal type tag */
- duk_push_int(ctx, (duk_int_t) DUK_TVAL_GET_TAG(tv));
- goto done;
- }
- DUK_ASSERT(h != NULL);
-
- /* refcount */
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk_push_size_t(ctx, DUK_HEAPHDR_GET_REFCOUNT(h));
-#else
- duk_push_undefined(ctx);
-#endif
-
- /* heaphdr size and additional allocation size, followed by
- * type specific stuff (with varying value count)
- */
- switch ((duk_small_int_t) DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING: {
- duk_hstring *h_str = (duk_hstring *) h;
- duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hstring) + DUK_HSTRING_GET_BYTELEN(h_str) + 1));
- break;
- }
- case DUK_HTYPE_OBJECT: {
- duk_hobject *h_obj = (duk_hobject *) h;
- duk_small_uint_t hdr_size;
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) {
- hdr_size = (duk_small_uint_t) sizeof(duk_hcompiledfunction);
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h_obj)) {
- hdr_size = (duk_small_uint_t) sizeof(duk_hnativefunction);
- } else if (DUK_HOBJECT_IS_THREAD(h_obj)) {
- hdr_size = (duk_small_uint_t) sizeof(duk_hthread);
- } else {
- hdr_size = (duk_small_uint_t) sizeof(duk_hobject);
- }
- duk_push_uint(ctx, (duk_uint_t) hdr_size);
- duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_P_ALLOC_SIZE(h_obj));
- duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ESIZE(h_obj));
- /* Note: e_next indicates the number of gc-reachable entries
- * in the entry part, and also indicates the index where the
- * next new property would be inserted. It does *not* indicate
- * the number of non-NULL keys present in the object. That
- * value could be counted separately but requires a pass through
- * the key list.
- */
- duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ENEXT(h_obj));
- duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_ASIZE(h_obj));
- duk_push_uint(ctx, (duk_uint_t) DUK_HOBJECT_GET_HSIZE(h_obj));
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) {
- duk_hbuffer *h_data = (duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, (duk_hcompiledfunction *) h_obj);
- if (h_data) {
- duk_push_uint(ctx, (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_data));
- } else {
- duk_push_uint(ctx, 0);
- }
- }
- break;
- }
- case DUK_HTYPE_BUFFER: {
- duk_hbuffer *h_buf = (duk_hbuffer *) h;
- if (DUK_HBUFFER_HAS_DYNAMIC(h_buf)) {
- if (DUK_HBUFFER_HAS_EXTERNAL(h_buf)) {
- duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_external)));
- } else {
- /* When alloc_size == 0 the second allocation may not
- * actually exist.
- */
- duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_dynamic)));
- }
- duk_push_uint(ctx, (duk_uint_t) (DUK_HBUFFER_GET_SIZE(h_buf)));
- } else {
- duk_push_uint(ctx, (duk_uint_t) (sizeof(duk_hbuffer_fixed) + DUK_HBUFFER_GET_SIZE(h_buf) + 1));
- }
- break;
-
- }
- }
-
- done:
- /* set values into ret array */
- /* XXX: primitive to make array from valstack slice */
- n = duk_get_top(ctx);
- for (i = 2; i < n; i++) {
- duk_dup(ctx, i);
- duk_put_prop_index(ctx, 1, i - 2);
- }
- duk_dup(ctx, 1);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_act(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_activation *act;
- duk_uint_fast32_t pc;
- duk_uint_fast32_t line;
- duk_int_t level;
-
- /* -1 = top callstack entry, callstack[callstack_top - 1]
- * -callstack_top = bottom callstack entry, callstack[0]
- */
- level = duk_to_int(ctx, 0);
- if (level >= 0 || -level > (duk_int_t) thr->callstack_top) {
- return 0;
- }
- DUK_ASSERT(level >= -((duk_int_t) thr->callstack_top) && level <= -1);
- act = thr->callstack + thr->callstack_top + level;
-
- duk_push_object(ctx);
-
- duk_push_tval(ctx, &act->tv_func);
-
- /* Relevant PC is just before current one because PC is
- * post-incremented. This should match what error augment
- * code does.
- */
- pc = duk_hthread_get_act_prev_pc(thr, act);
- duk_push_uint(ctx, (duk_uint_t) pc);
-
-#if defined(DUK_USE_PC2LINE)
- line = duk_hobject_pc2line_query(ctx, -2, pc);
-#else
- line = 0;
-#endif
- duk_push_uint(ctx, (duk_uint_t) line);
-
- /* Providing access to e.g. act->lex_env would be dangerous: these
- * internal structures must never be accessible to the application.
- * Duktape relies on them having consistent data, and this consistency
- * is only asserted for, not checked for.
- */
-
- /* [ level obj func pc line ] */
-
- /* XXX: version specific array format instead? */
- duk_xdef_prop_stridx_wec(ctx, -4, DUK_STRIDX_LINE_NUMBER);
- duk_xdef_prop_stridx_wec(ctx, -3, DUK_STRIDX_PC);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_LC_FUNCTION);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_gc(duk_context *ctx) {
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_uint_t flags;
- duk_bool_t rc;
-
- flags = (duk_small_uint_t) duk_get_uint(ctx, 0);
- rc = duk_heap_mark_and_sweep(thr->heap, flags);
-
- /* XXX: Not sure what the best return value would be in the API.
- * Return a boolean for now. Note that rc == 0 is success (true).
- */
- duk_push_boolean(ctx, !rc);
- return 1;
-#else
- DUK_UNREF(ctx);
- return 0;
-#endif
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_fin(duk_context *ctx) {
- (void) duk_require_hobject(ctx, 0);
- if (duk_get_top(ctx) >= 2) {
- /* Set: currently a finalizer is disabled by setting it to
- * undefined; this does not remove the property at the moment.
- * The value could be type checked to be either a function
- * or something else; if something else, the property could
- * be deleted.
- */
- duk_set_top(ctx, 2);
- (void) duk_put_prop_stridx(ctx, 0, DUK_STRIDX_INT_FINALIZER);
- return 0;
- } else {
- /* Get. */
- DUK_ASSERT(duk_get_top(ctx) == 1);
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_INT_FINALIZER);
- return 1;
- }
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_enc(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_str;
-
- DUK_UNREF(thr);
-
- /* Vararg function: must be careful to check/require arguments.
- * The JSON helpers accept invalid indices and treat them like
- * non-existent optional parameters.
- */
-
- h_str = duk_require_hstring(ctx, 0);
- duk_require_valid_index(ctx, 1);
-
- if (h_str == DUK_HTHREAD_STRING_HEX(thr)) {
- duk_set_top(ctx, 2);
- duk_hex_encode(ctx, 1);
- DUK_ASSERT_TOP(ctx, 2);
- } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) {
- duk_set_top(ctx, 2);
- duk_base64_encode(ctx, 1);
- DUK_ASSERT_TOP(ctx, 2);
-#ifdef DUK_USE_JX
- } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) {
- duk_bi_json_stringify_helper(ctx,
- 1 /*idx_value*/,
- 2 /*idx_replacer*/,
- 3 /*idx_space*/,
- DUK_JSON_FLAG_EXT_CUSTOM |
- DUK_JSON_FLAG_ASCII_ONLY |
- DUK_JSON_FLAG_AVOID_KEY_QUOTES /*flags*/);
-#endif
-#ifdef DUK_USE_JC
- } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) {
- duk_bi_json_stringify_helper(ctx,
- 1 /*idx_value*/,
- 2 /*idx_replacer*/,
- 3 /*idx_space*/,
- DUK_JSON_FLAG_EXT_COMPATIBLE |
- DUK_JSON_FLAG_ASCII_ONLY /*flags*/);
-#endif
- } else {
- return DUK_RET_TYPE_ERROR;
- }
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_dec(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_str;
-
- DUK_UNREF(thr);
-
- /* Vararg function: must be careful to check/require arguments.
- * The JSON helpers accept invalid indices and treat them like
- * non-existent optional parameters.
- */
-
- h_str = duk_require_hstring(ctx, 0);
- duk_require_valid_index(ctx, 1);
-
- if (h_str == DUK_HTHREAD_STRING_HEX(thr)) {
- duk_set_top(ctx, 2);
- duk_hex_decode(ctx, 1);
- DUK_ASSERT_TOP(ctx, 2);
- } else if (h_str == DUK_HTHREAD_STRING_BASE64(thr)) {
- duk_set_top(ctx, 2);
- duk_base64_decode(ctx, 1);
- DUK_ASSERT_TOP(ctx, 2);
-#ifdef DUK_USE_JX
- } else if (h_str == DUK_HTHREAD_STRING_JX(thr)) {
- duk_bi_json_parse_helper(ctx,
- 1 /*idx_value*/,
- 2 /*idx_replacer*/,
- DUK_JSON_FLAG_EXT_CUSTOM /*flags*/);
-#endif
-#ifdef DUK_USE_JC
- } else if (h_str == DUK_HTHREAD_STRING_JC(thr)) {
- duk_bi_json_parse_helper(ctx,
- 1 /*idx_value*/,
- 2 /*idx_replacer*/,
- DUK_JSON_FLAG_EXT_COMPATIBLE /*flags*/);
-#endif
- } else {
- return DUK_RET_TYPE_ERROR;
- }
- return 1;
-}
-
-/*
- * Compact an object
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_duktape_object_compact(duk_context *ctx) {
- DUK_ASSERT_TOP(ctx, 1);
- duk_compact(ctx, 0);
- return 1; /* return the argument object */
-}
-#line 1 "duk_bi_error.c"
-/*
- * Error built-ins
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_ret_t duk_bi_error_constructor_shared(duk_context *ctx) {
- /* Behavior for constructor and non-constructor call is
- * the same except for augmenting the created error. When
- * called as a constructor, the caller (duk_new()) will handle
- * augmentation; when called as normal function, we need to do
- * it here.
- */
-
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_int_t bidx_prototype = duk_get_current_magic(ctx);
-
- /* same for both error and each subclass like TypeError */
- duk_uint_t flags_and_class = DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ERROR);
-
- DUK_UNREF(thr);
-
- duk_push_object_helper(ctx, flags_and_class, bidx_prototype);
-
- /* If message is undefined, the own property 'message' is not set at
- * all to save property space. An empty message is inherited anyway.
- */
- if (!duk_is_undefined(ctx, 0)) {
- duk_to_string(ctx, 0);
- duk_dup(ctx, 0); /* [ message error message ] */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_MESSAGE, DUK_PROPDESC_FLAGS_WC);
- }
-
- /* Augment the error if called as a normal function. __FILE__ and __LINE__
- * are not desirable in this case.
- */
-
-#ifdef DUK_USE_AUGMENT_ERROR_CREATE
- if (!duk_is_constructor_call(ctx)) {
- duk_err_augment_error_create(thr, thr, NULL, 0, 1 /*noblame_fileline*/);
- }
-#endif
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_to_string(duk_context *ctx) {
- /* XXX: optimize with more direct internal access */
-
- duk_push_this(ctx);
- (void) duk_require_hobject_or_lfunc_coerce(ctx, -1);
-
- /* [ ... this ] */
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_NAME);
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_push_string(ctx, "Error");
- } else {
- duk_to_string(ctx, -1);
- }
-
- /* [ ... this name ] */
-
- /* XXX: Are steps 6 and 7 in E5 Section 15.11.4.4 duplicated by
- * accident or are they actually needed? The first ToString()
- * could conceivably return 'undefined'.
- */
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_MESSAGE);
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_push_string(ctx, "");
- } else {
- duk_to_string(ctx, -1);
- }
-
- /* [ ... this name message ] */
-
- if (duk_get_length(ctx, -2) == 0) {
- /* name is empty -> return message */
- return 1;
- }
- if (duk_get_length(ctx, -1) == 0) {
- /* message is empty -> return name */
- duk_pop(ctx);
- return 1;
- }
- duk_push_string(ctx, ": ");
- duk_insert(ctx, -2); /* ... name ': ' message */
- duk_concat(ctx, 3);
-
- return 1;
-}
-
-#if defined(DUK_USE_TRACEBACKS)
-
-/*
- * Traceback handling
- *
- * The unified helper decodes the traceback and produces various requested
- * outputs. It should be optimized for size, and may leave garbage on stack,
- * only the topmost return value matters. For instance, traceback separator
- * and decoded strings are pushed even when looking for filename only.
- *
- * NOTE: although _Tracedata is an internal property, user code can currently
- * write to the array (or replace it with something other than an array).
- * The code below must tolerate arbitrary _Tracedata. It can throw errors
- * etc, but cannot cause a segfault or memory unsafe behavior.
- */
-
-/* constants arbitrary, chosen for small loads */
-#define DUK__OUTPUT_TYPE_TRACEBACK (-1)
-#define DUK__OUTPUT_TYPE_FILENAME 0
-#define DUK__OUTPUT_TYPE_LINENUMBER 1
-
-DUK_LOCAL duk_ret_t duk__error_getter_helper(duk_context *ctx, duk_small_int_t output_type) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t idx_td;
- duk_small_int_t i; /* traceback depth fits into 16 bits */
- duk_small_int_t t; /* stack type fits into 16 bits */
- duk_small_int_t count_func = 0; /* traceback depth ensures fits into 16 bits */
- const char *str_tailcall = " tailcall";
- const char *str_strict = " strict";
- const char *str_construct = " construct";
- const char *str_prevyield = " preventsyield";
- const char *str_directeval = " directeval";
- const char *str_empty = "";
-
- DUK_ASSERT_TOP(ctx, 0); /* fixed arg count */
- DUK_UNREF(thr);
-
- duk_push_this(ctx);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TRACEDATA);
- idx_td = duk_get_top_index(ctx);
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_NEWLINE_4SPACE);
- duk_push_this(ctx);
-
- /* [ ... this tracedata sep this ] */
-
- /* XXX: skip null filename? */
-
- if (duk_check_type(ctx, idx_td, DUK_TYPE_OBJECT)) {
- /* Current tracedata contains 2 entries per callstack entry. */
- for (i = 0; ; i += 2) {
- duk_int_t pc;
- duk_int_t line;
- duk_int_t flags;
- duk_double_t d;
- const char *funcname;
- const char *filename;
- duk_hobject *h_func;
- duk_hstring *h_name;
-
- duk_require_stack(ctx, 5);
- duk_get_prop_index(ctx, idx_td, i);
- duk_get_prop_index(ctx, idx_td, i + 1);
- d = duk_to_number(ctx, -1);
- pc = (duk_int_t) DUK_FMOD(d, DUK_DOUBLE_2TO32);
- flags = (duk_int_t) DUK_FLOOR(d / DUK_DOUBLE_2TO32);
- t = (duk_small_int_t) duk_get_type(ctx, -2);
-
- if (t == DUK_TYPE_OBJECT || t == DUK_TYPE_LIGHTFUNC) {
- /*
- * Ecmascript/native function call or lightfunc call
- */
-
- count_func++;
-
- /* [ ... v1(func) v2(pc+flags) ] */
-
- h_func = duk_get_hobject(ctx, -2); /* NULL for lightfunc */
-
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME);
- duk_get_prop_stridx(ctx, -3, DUK_STRIDX_FILE_NAME);
-
-#if defined(DUK_USE_PC2LINE)
- line = duk_hobject_pc2line_query(ctx, -4, (duk_uint_fast32_t) pc);
-#else
- line = 0;
-#endif
-
- /* [ ... v1 v2 name filename ] */
-
- /* When looking for .fileName/.lineNumber, blame first
- * function which has a .fileName.
- */
- if (duk_is_string(ctx, -1)) {
- if (output_type == DUK__OUTPUT_TYPE_FILENAME) {
- return 1;
- } else if (output_type == DUK__OUTPUT_TYPE_LINENUMBER) {
- duk_push_int(ctx, line);
- return 1;
- }
- }
-
- /* XXX: Change 'anon' handling here too, to use empty string for anonymous functions? */
- /* XXX: Could be improved by coercing to a readable duk_tval (especially string escaping) */
- h_name = duk_get_hstring(ctx, -2); /* may be NULL */
- funcname = (h_name == NULL || h_name == DUK_HTHREAD_STRING_EMPTY_STRING(thr)) ?
- "[anon]" : (const char *) DUK_HSTRING_GET_DATA(h_name);
- filename = duk_get_string(ctx, -1);
- filename = filename ? filename : "";
- DUK_ASSERT(funcname != NULL);
- DUK_ASSERT(filename != NULL);
-
- if (h_func == NULL) {
- duk_push_sprintf(ctx, "at %s light%s%s%s%s%s",
- (const char *) funcname,
- (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty));
- } else if (DUK_HOBJECT_HAS_NATIVEFUNCTION(h_func)) {
- duk_push_sprintf(ctx, "at %s (%s) native%s%s%s%s%s",
- (const char *) funcname,
- (const char *) filename,
- (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty));
- } else {
- duk_push_sprintf(ctx, "at %s (%s:%ld)%s%s%s%s%s",
- (const char *) funcname,
- (const char *) filename,
- (long) line,
- (const char *) ((flags & DUK_ACT_FLAG_STRICT) ? str_strict : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_TAILCALLED) ? str_tailcall : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_CONSTRUCT) ? str_construct : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_DIRECT_EVAL) ? str_directeval : str_empty),
- (const char *) ((flags & DUK_ACT_FLAG_PREVENT_YIELD) ? str_prevyield : str_empty));
- }
- duk_replace(ctx, -5); /* [ ... v1 v2 name filename str ] -> [ ... str v2 name filename ] */
- duk_pop_n(ctx, 3); /* -> [ ... str ] */
- } else if (t == DUK_TYPE_STRING) {
- /*
- * __FILE__ / __LINE__ entry, here 'pc' is line number directly.
- * Sometimes __FILE__ / __LINE__ is reported as the source for
- * the error (fileName, lineNumber), sometimes not.
- */
-
- /* [ ... v1(filename) v2(line+flags) ] */
-
- /* When looking for .fileName/.lineNumber, blame compilation
- * or C call site unless flagged not to do so.
- */
- if (!(flags & DUK_TB_FLAG_NOBLAME_FILELINE)) {
- if (output_type == DUK__OUTPUT_TYPE_FILENAME) {
- duk_pop(ctx);
- return 1;
- } else if (output_type == DUK__OUTPUT_TYPE_LINENUMBER) {
- duk_push_int(ctx, pc);
- return 1;
- }
- }
-
- duk_push_sprintf(ctx, "at [anon] (%s:%ld) internal",
- (const char *) duk_get_string(ctx, -2), (long) pc);
- duk_replace(ctx, -3); /* [ ... v1 v2 str ] -> [ ... str v2 ] */
- duk_pop(ctx); /* -> [ ... str ] */
- } else {
- /* unknown, ignore */
- duk_pop_2(ctx);
- break;
- }
- }
-
- if (count_func >= DUK_USE_TRACEBACK_DEPTH) {
- /* Possibly truncated; there is no explicit truncation
- * marker so this is the best we can do.
- */
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_BRACKETED_ELLIPSIS);
- }
- }
-
- /* [ ... this tracedata sep this str1 ... strN ] */
-
- if (output_type != DUK__OUTPUT_TYPE_TRACEBACK) {
- return 0;
- } else {
- /* The 'this' after 'sep' will get ToString() coerced by
- * duk_join() automatically. We don't want to do that
- * coercion when providing .fileName or .lineNumber (GH-254).
- */
- duk_join(ctx, duk_get_top(ctx) - (idx_td + 2) /*count, not including sep*/);
- return 1;
- }
-}
-
-/* XXX: Output type could be encoded into native function 'magic' value to
- * save space. For setters the stridx could be encoded into 'magic'.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_getter(duk_context *ctx) {
- return duk__error_getter_helper(ctx, DUK__OUTPUT_TYPE_TRACEBACK);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_getter(duk_context *ctx) {
- return duk__error_getter_helper(ctx, DUK__OUTPUT_TYPE_FILENAME);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_context *ctx) {
- return duk__error_getter_helper(ctx, DUK__OUTPUT_TYPE_LINENUMBER);
-}
-
-#undef DUK__OUTPUT_TYPE_TRACEBACK
-#undef DUK__OUTPUT_TYPE_FILENAME
-#undef DUK__OUTPUT_TYPE_LINENUMBER
-
-#else /* DUK_USE_TRACEBACKS */
-
-/*
- * Traceback handling when tracebacks disabled.
- *
- * The fileName / lineNumber stubs are now necessary because built-in
- * data will include the accessor properties in Error.prototype. If those
- * are removed for builds without tracebacks, these can also be removed.
- * 'stack' should still be present and produce a ToString() equivalent:
- * this is useful for user code which prints a stacktrace and expects to
- * see something useful. A normal stacktrace also begins with a ToString()
- * of the error so this makes sense.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_getter(duk_context *ctx) {
- /* XXX: remove this native function and map 'stack' accessor
- * to the toString() implementation directly.
- */
- return duk_bi_error_prototype_to_string(ctx);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_getter(duk_context *ctx) {
- DUK_UNREF(ctx);
- return 0;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_getter(duk_context *ctx) {
- DUK_UNREF(ctx);
- return 0;
-}
-
-#endif /* DUK_USE_TRACEBACKS */
-
-DUK_LOCAL duk_ret_t duk__error_setter_helper(duk_context *ctx, duk_small_uint_t stridx_key) {
- /* Attempt to write 'stack', 'fileName', 'lineNumber' works as if
- * user code called Object.defineProperty() to create an overriding
- * own property. This allows user code to overwrite .fileName etc
- * intuitively as e.g. "err.fileName = 'dummy'" as one might expect.
- * See https://github.com/svaarala/duktape/issues/387.
- */
-
- DUK_ASSERT_TOP(ctx, 1); /* fixed arg count: value */
-
- duk_push_this(ctx);
- duk_push_hstring_stridx(ctx, (duk_small_int_t) stridx_key);
- duk_dup(ctx, 0);
-
- /* [ ... obj key value ] */
-
- DUK_DD(DUK_DDPRINT("error setter: %!T %!T %!T",
- duk_get_tval(ctx, -3), duk_get_tval(ctx, -2), duk_get_tval(ctx, -1)));
-
- duk_def_prop(ctx, -3, DUK_DEFPROP_HAVE_VALUE |
- DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE |
- DUK_DEFPROP_HAVE_ENUMERABLE | /*not enumerable*/
- DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE);
- return 0;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_stack_setter(duk_context *ctx) {
- return duk__error_setter_helper(ctx, DUK_STRIDX_STACK);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_filename_setter(duk_context *ctx) {
- return duk__error_setter_helper(ctx, DUK_STRIDX_FILE_NAME);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_error_prototype_linenumber_setter(duk_context *ctx) {
- return duk__error_setter_helper(ctx, DUK_STRIDX_LINE_NUMBER);
-}
-#line 1 "duk_bi_function.c"
-/*
- * Function built-ins
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_ret_t duk_bi_function_constructor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_sourcecode;
- duk_idx_t nargs;
- duk_idx_t i;
- duk_small_uint_t comp_flags;
- duk_hcompiledfunction *func;
- duk_hobject *outer_lex_env;
- duk_hobject *outer_var_env;
-
- /* normal and constructor calls have identical semantics */
-
- nargs = duk_get_top(ctx);
- for (i = 0; i < nargs; i++) {
- duk_to_string(ctx, i);
- }
-
- if (nargs == 0) {
- duk_push_string(ctx, "");
- duk_push_string(ctx, "");
- } else if (nargs == 1) {
- /* XXX: cover this with the generic >1 case? */
- duk_push_string(ctx, "");
- } else {
- duk_insert(ctx, 0); /* [ arg1 ... argN-1 body] -> [body arg1 ... argN-1] */
- duk_push_string(ctx, ",");
- duk_insert(ctx, 1);
- duk_join(ctx, nargs - 1);
- }
-
- /* [ body formals ], formals is comma separated list that needs to be parsed */
-
- DUK_ASSERT_TOP(ctx, 2);
-
- /* XXX: this placeholder is not always correct, but use for now.
- * It will fail in corner cases; see test-dev-func-cons-args.js.
- */
- duk_push_string(ctx, "function(");
- duk_dup(ctx, 1);
- duk_push_string(ctx, "){");
- duk_dup(ctx, 0);
- duk_push_string(ctx, "}");
- duk_concat(ctx, 5);
-
- /* [ body formals source ] */
-
- DUK_ASSERT_TOP(ctx, 3);
-
- /* strictness is not inherited, intentional */
- comp_flags = DUK_JS_COMPILE_FLAG_FUNCEXPR;
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_COMPILE); /* XXX: copy from caller? */ /* XXX: ignored now */
- h_sourcecode = duk_require_hstring(ctx, -2);
- duk_js_compile(thr,
- (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_sourcecode),
- (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sourcecode),
- comp_flags);
- func = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) func));
-
- /* [ body formals source template ] */
-
- /* only outer_lex_env matters, as functions always get a new
- * variable declaration environment.
- */
-
- outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
-
- duk_js_push_closure(thr, func, outer_var_env, outer_lex_env, 1 /*add_auto_proto*/);
-
- /* [ body formals source template closure ] */
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_function_prototype(duk_context *ctx) {
- /* ignore arguments, return undefined (E5 Section 15.3.4) */
- DUK_UNREF(ctx);
- return 0;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_function_prototype_to_string(duk_context *ctx) {
- duk_tval *tv;
-
- /*
- * E5 Section 15.3.4.2 places few requirements on the output of
- * this function:
- *
- * - The result is an implementation dependent representation
- * of the function; in particular
- *
- * - The result must follow the syntax of a FunctionDeclaration.
- * In particular, the function must have a name (even in the
- * case of an anonymous function or a function with an empty
- * name).
- *
- * - Note in particular that the output does NOT need to compile
- * into anything useful.
- */
-
-
- /* XXX: faster internal way to get this */
- duk_push_this(ctx);
- tv = duk_get_tval(ctx, -1);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv);
- const char *func_name;
-
- /* Function name: missing/undefined is mapped to empty string,
- * otherwise coerce to string.
- */
- /* XXX: currently no handling for non-allowed identifier characters,
- * e.g. a '{' in the function name.
- */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_NAME);
- if (duk_is_undefined(ctx, -1)) {
- func_name = "";
- } else {
- func_name = duk_to_string(ctx, -1);
- DUK_ASSERT(func_name != NULL);
- }
-
- /* Indicate function type in the function body using a dummy
- * directive.
- */
- if (DUK_HOBJECT_HAS_COMPILEDFUNCTION(obj)) {
- duk_push_sprintf(ctx, "function %s() {\"ecmascript\"}", (const char *) func_name);
- } else if (DUK_HOBJECT_HAS_NATIVEFUNCTION(obj)) {
- duk_push_sprintf(ctx, "function %s() {\"native\"}", (const char *) func_name);
- } else if (DUK_HOBJECT_HAS_BOUND(obj)) {
- duk_push_sprintf(ctx, "function %s() {\"bound\"}", (const char *) func_name);
- } else {
- goto type_error;
- }
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv)) {
- duk_push_lightfunc_tostring(ctx, tv);
- } else {
- goto type_error;
- }
-
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_function_prototype_apply(duk_context *ctx) {
- duk_idx_t len;
- duk_idx_t i;
-
- DUK_ASSERT_TOP(ctx, 2); /* not a vararg function */
-
- duk_push_this(ctx);
- if (!duk_is_callable(ctx, -1)) {
- DUK_DDD(DUK_DDDPRINT("func is not callable"));
- goto type_error;
- }
- duk_insert(ctx, 0);
- DUK_ASSERT_TOP(ctx, 3);
-
- DUK_DDD(DUK_DDDPRINT("func=%!iT, thisArg=%!iT, argArray=%!iT",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (duk_tval *) duk_get_tval(ctx, 2)));
-
- /* [ func thisArg argArray ] */
-
- if (duk_is_null_or_undefined(ctx, 2)) {
- DUK_DDD(DUK_DDDPRINT("argArray is null/undefined, no args"));
- len = 0;
- } else if (!duk_is_object(ctx, 2)) {
- goto type_error;
- } else {
- DUK_DDD(DUK_DDDPRINT("argArray is an object"));
-
- /* XXX: make this an internal helper */
- duk_get_prop_stridx(ctx, 2, DUK_STRIDX_LENGTH);
- len = (duk_idx_t) duk_to_uint32(ctx, -1); /* ToUint32() coercion required */
- duk_pop(ctx);
-
- duk_require_stack(ctx, len);
-
- DUK_DDD(DUK_DDDPRINT("argArray length is %ld", (long) len));
- for (i = 0; i < len; i++) {
- duk_get_prop_index(ctx, 2, i);
- }
- }
- duk_remove(ctx, 2);
- DUK_ASSERT_TOP(ctx, 2 + len);
-
- /* [ func thisArg arg1 ... argN ] */
-
- DUK_DDD(DUK_DDDPRINT("apply, func=%!iT, thisArg=%!iT, len=%ld",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (long) len));
- duk_call_method(ctx, len);
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_function_prototype_call(duk_context *ctx) {
- duk_idx_t nargs;
-
- /* Step 1 is not necessary because duk_call_method() will take
- * care of it.
- */
-
- /* vararg function, thisArg needs special handling */
- nargs = duk_get_top(ctx); /* = 1 + arg count */
- if (nargs == 0) {
- duk_push_undefined(ctx);
- nargs++;
- }
- DUK_ASSERT(nargs >= 1);
-
- /* [ thisArg arg1 ... argN ] */
-
- duk_push_this(ctx); /* 'func' in the algorithm */
- duk_insert(ctx, 0);
-
- /* [ func thisArg arg1 ... argN ] */
-
- DUK_DDD(DUK_DDDPRINT("func=%!iT, thisArg=%!iT, argcount=%ld, top=%ld",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (long) (nargs - 1),
- (long) duk_get_top(ctx)));
- duk_call_method(ctx, nargs - 1);
- return 1;
-}
-
-/* XXX: the implementation now assumes "chained" bound functions,
- * whereas "collapsed" bound functions (where there is ever only
- * one bound function which directly points to a non-bound, final
- * function) would require a "collapsing" implementation which
- * merges argument lists etc here.
- */
-DUK_INTERNAL duk_ret_t duk_bi_function_prototype_bind(duk_context *ctx) {
- duk_hobject *h_bound;
- duk_hobject *h_target;
- duk_idx_t nargs;
- duk_idx_t i;
-
- /* vararg function, careful arg handling (e.g. thisArg may not be present) */
- nargs = duk_get_top(ctx); /* = 1 + arg count */
- if (nargs == 0) {
- duk_push_undefined(ctx);
- nargs++;
- }
- DUK_ASSERT(nargs >= 1);
-
- duk_push_this(ctx);
- if (!duk_is_callable(ctx, -1)) {
- DUK_DDD(DUK_DDDPRINT("func is not callable"));
- goto type_error;
- }
-
- /* [ thisArg arg1 ... argN func ] (thisArg+args == nargs total) */
- DUK_ASSERT_TOP(ctx, nargs + 1);
-
- /* create bound function object */
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_BOUND |
- DUK_HOBJECT_FLAG_CONSTRUCTABLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_FUNCTION),
- DUK_BIDX_FUNCTION_PROTOTYPE);
- h_bound = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_bound != NULL);
-
- /* [ thisArg arg1 ... argN func boundFunc ] */
- duk_dup(ctx, -2); /* func */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE);
-
- duk_dup(ctx, 0); /* thisArg */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_THIS, DUK_PROPDESC_FLAGS_NONE);
-
- duk_push_array(ctx);
-
- /* [ thisArg arg1 ... argN func boundFunc argArray ] */
-
- for (i = 0; i < nargs - 1; i++) {
- duk_dup(ctx, 1 + i);
- duk_put_prop_index(ctx, -2, i);
- }
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_ARGS, DUK_PROPDESC_FLAGS_NONE);
-
- /* [ thisArg arg1 ... argN func boundFunc ] */
-
- /* bound function 'length' property is interesting */
- h_target = duk_get_hobject(ctx, -2);
- if (h_target == NULL || /* lightfunc */
- DUK_HOBJECT_GET_CLASS_NUMBER(h_target) == DUK_HOBJECT_CLASS_FUNCTION) {
- /* For lightfuncs, simply read the virtual property. */
- duk_int_t tmp;
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH);
- tmp = duk_to_int(ctx, -1) - (nargs - 1); /* step 15.a */
- duk_pop(ctx);
- duk_push_int(ctx, (tmp < 0 ? 0 : tmp));
- } else {
- duk_push_int(ctx, 0);
- }
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE); /* attrs in E5 Section 15.3.5.1 */
-
- /* caller and arguments must use the same thrower, [[ThrowTypeError]] */
- duk_xdef_prop_stridx_thrower(ctx, -1, DUK_STRIDX_CALLER, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx_thrower(ctx, -1, DUK_STRIDX_LC_ARGUMENTS, DUK_PROPDESC_FLAGS_NONE);
-
- /* these non-standard properties are copied for convenience */
- /* XXX: 'copy properties' API call? */
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_WC);
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_FILE_NAME);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_WC);
-
- /* The 'strict' flag is copied to get the special [[Get]] of E5.1
- * Section 15.3.5.4 to apply when a 'caller' value is a strict bound
- * function. Not sure if this is correct, because the specification
- * is a bit ambiguous on this point but it would make sense.
- */
- if (h_target == NULL) {
- /* Lightfuncs are always strict. */
- DUK_HOBJECT_SET_STRICT(h_bound);
- } else if (DUK_HOBJECT_HAS_STRICT(h_target)) {
- DUK_HOBJECT_SET_STRICT(h_bound);
- }
- DUK_DDD(DUK_DDDPRINT("created bound function: %!iT", (duk_tval *) duk_get_tval(ctx, -1)));
-
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-#line 1 "duk_bi_global.c"
-/*
- * Global object built-ins
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Encoding/decoding helpers
- */
-
-/* XXX: Could add fast path (for each transform callback) with direct byte
- * lookups (no shifting) and no explicit check for x < 0x80 before table
- * lookup.
- */
-
-/* Macros for creating and checking bitmasks for character encoding.
- * Bit number is a bit counterintuitive, but minimizes code size.
- */
-#define DUK__MKBITS(a,b,c,d,e,f,g,h) ((duk_uint8_t) ( \
- ((a) << 0) | ((b) << 1) | ((c) << 2) | ((d) << 3) | \
- ((e) << 4) | ((f) << 5) | ((g) << 6) | ((h) << 7) \
- ))
-#define DUK__CHECK_BITMASK(table,cp) ((table)[(cp) >> 3] & (1 << ((cp) & 0x07)))
-
-/* E5.1 Section 15.1.3.3: uriReserved + uriUnescaped + '#' */
-DUK_LOCAL const duk_uint8_t duk__encode_uriunescaped_table[16] = {
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */
- DUK__MKBITS(0, 1, 0, 1, 1, 0, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x20-0x2f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 0, 1, 0, 1), /* 0x30-0x3f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */
- DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 1, 0), /* 0x70-0x7f */
-};
-
-/* E5.1 Section 15.1.3.4: uriUnescaped */
-DUK_LOCAL const duk_uint8_t duk__encode_uricomponent_unescaped_table[16] = {
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */
- DUK__MKBITS(0, 1, 0, 0, 0, 0, 0, 1), DUK__MKBITS(1, 1, 1, 0, 0, 1, 1, 0), /* 0x20-0x2f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */
- DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */
- DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 1, 0), /* 0x70-0x7f */
-};
-
-/* E5.1 Section 15.1.3.1: uriReserved + '#' */
-DUK_LOCAL const duk_uint8_t duk__decode_uri_reserved_table[16] = {
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */
- DUK__MKBITS(0, 0, 0, 1, 1, 0, 1, 0), DUK__MKBITS(0, 0, 0, 1, 1, 0, 0, 1), /* 0x20-0x2f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 1, 1, 0, 1, 0, 1), /* 0x30-0x3f */
- DUK__MKBITS(1, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x40-0x4f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x50-0x5f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x60-0x6f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x70-0x7f */
-};
-
-/* E5.1 Section 15.1.3.2: empty */
-DUK_LOCAL const duk_uint8_t duk__decode_uri_component_reserved_table[16] = {
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x20-0x2f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x40-0x4f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x50-0x5f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x60-0x6f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x70-0x7f */
-};
-
-#ifdef DUK_USE_SECTION_B
-/* E5.1 Section B.2.2, step 7. */
-DUK_LOCAL const duk_uint8_t duk__escape_unescaped_table[16] = {
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x00-0x0f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), /* 0x10-0x1f */
- DUK__MKBITS(0, 0, 0, 0, 0, 0, 0, 0), DUK__MKBITS(0, 0, 1, 1, 0, 1, 1, 1), /* 0x20-0x2f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 0, 0, 0, 0, 0, 0), /* 0x30-0x3f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x40-0x4f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 1), /* 0x50-0x5f */
- DUK__MKBITS(0, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), /* 0x60-0x6f */
- DUK__MKBITS(1, 1, 1, 1, 1, 1, 1, 1), DUK__MKBITS(1, 1, 1, 0, 0, 0, 0, 0) /* 0x70-0x7f */
-};
-#endif /* DUK_USE_SECTION_B */
-
-#undef DUK__MKBITS
-
-typedef struct {
- duk_hthread *thr;
- duk_hstring *h_str;
- duk_bufwriter_ctx bw;
- const duk_uint8_t *p;
- const duk_uint8_t *p_start;
- const duk_uint8_t *p_end;
-} duk__transform_context;
-
-typedef void (*duk__transform_callback)(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp);
-
-/* XXX: refactor and share with other code */
-DUK_LOCAL duk_small_int_t duk__decode_hex_escape(const duk_uint8_t *p, duk_small_int_t n) {
- duk_small_int_t ch;
- duk_small_int_t t = 0;
-
- while (n > 0) {
- t = t * 16;
- ch = (duk_small_int_t) duk_hex_dectab[*p++];
- if (DUK_LIKELY(ch >= 0)) {
- t += ch;
- } else {
- return -1;
- }
- n--;
- }
- return t;
-}
-
-DUK_LOCAL int duk__transform_helper(duk_context *ctx, duk__transform_callback callback, const void *udata) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk__transform_context tfm_ctx_alloc;
- duk__transform_context *tfm_ctx = &tfm_ctx_alloc;
- duk_codepoint_t cp;
-
- tfm_ctx->thr = thr;
-
- tfm_ctx->h_str = duk_to_hstring(ctx, 0);
- DUK_ASSERT(tfm_ctx->h_str != NULL);
-
- DUK_BW_INIT_PUSHBUF(thr, &tfm_ctx->bw, DUK_HSTRING_GET_BYTELEN(tfm_ctx->h_str)); /* initial size guess */
-
- tfm_ctx->p_start = DUK_HSTRING_GET_DATA(tfm_ctx->h_str);
- tfm_ctx->p_end = tfm_ctx->p_start + DUK_HSTRING_GET_BYTELEN(tfm_ctx->h_str);
- tfm_ctx->p = tfm_ctx->p_start;
-
- while (tfm_ctx->p < tfm_ctx->p_end) {
- cp = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(thr, &tfm_ctx->p, tfm_ctx->p_start, tfm_ctx->p_end);
- callback(tfm_ctx, udata, cp);
- }
-
- DUK_BW_COMPACT(thr, &tfm_ctx->bw);
-
- duk_to_string(ctx, -1);
- return 1;
-}
-
-DUK_LOCAL void duk__transform_callback_encode_uri(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) {
- duk_uint8_t xutf8_buf[DUK_UNICODE_MAX_XUTF8_LENGTH];
- duk_small_int_t len;
- duk_codepoint_t cp1, cp2;
- duk_small_int_t i, t;
- const duk_uint8_t *unescaped_table = (const duk_uint8_t *) udata;
-
- /* UTF-8 encoded bytes escaped as %xx%xx%xx... -> 3 * nbytes.
- * Codepoint range is restricted so this is a slightly too large
- * but doesn't matter.
- */
- DUK_BW_ENSURE(tfm_ctx->thr, &tfm_ctx->bw, 3 * DUK_UNICODE_MAX_XUTF8_LENGTH);
-
- if (cp < 0) {
- goto uri_error;
- } else if ((cp < 0x80L) && DUK__CHECK_BITMASK(unescaped_table, cp)) {
- DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) cp);
- return;
- } else if (cp >= 0xdc00L && cp <= 0xdfffL) {
- goto uri_error;
- } else if (cp >= 0xd800L && cp <= 0xdbffL) {
- /* Needs lookahead */
- if (duk_unicode_decode_xutf8(tfm_ctx->thr, &tfm_ctx->p, tfm_ctx->p_start, tfm_ctx->p_end, (duk_ucodepoint_t *) &cp2) == 0) {
- goto uri_error;
- }
- if (!(cp2 >= 0xdc00L && cp2 <= 0xdfffL)) {
- goto uri_error;
- }
- cp1 = cp;
- cp = ((cp1 - 0xd800L) << 10) + (cp2 - 0xdc00L) + 0x10000L;
- } else if (cp > 0x10ffffL) {
- /* Although we can allow non-BMP characters (they'll decode
- * back into surrogate pairs), we don't allow extended UTF-8
- * characters; they would encode to URIs which won't decode
- * back because of strict UTF-8 checks in URI decoding.
- * (However, we could just as well allow them here.)
- */
- goto uri_error;
- } else {
- /* Non-BMP characters within valid UTF-8 range: encode as is.
- * They'll decode back into surrogate pairs if the escaped
- * output is decoded.
- */
- ;
- }
-
- len = duk_unicode_encode_xutf8((duk_ucodepoint_t) cp, xutf8_buf);
- for (i = 0; i < len; i++) {
- t = (int) xutf8_buf[i];
- DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr,
- &tfm_ctx->bw,
- DUK_ASC_PERCENT,
- (duk_uint8_t) duk_uc_nybbles[t >> 4],
- (duk_uint8_t) duk_uc_nybbles[t & 0x0f]);
- }
-
- return;
-
- uri_error:
- DUK_ERROR(tfm_ctx->thr, DUK_ERR_URI_ERROR, "invalid input");
-}
-
-DUK_LOCAL void duk__transform_callback_decode_uri(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) {
- const duk_uint8_t *reserved_table = (const duk_uint8_t *) udata;
- duk_small_uint_t utf8_blen;
- duk_codepoint_t min_cp;
- duk_small_int_t t; /* must be signed */
- duk_small_uint_t i;
-
- /* Maximum write size: XUTF8 path writes max DUK_UNICODE_MAX_XUTF8_LENGTH,
- * percent escape path writes max two times CESU-8 encoded BMP length.
- */
- DUK_BW_ENSURE(tfm_ctx->thr,
- &tfm_ctx->bw,
- (DUK_UNICODE_MAX_XUTF8_LENGTH >= 2 * DUK_UNICODE_MAX_CESU8_BMP_LENGTH ?
- DUK_UNICODE_MAX_XUTF8_LENGTH : DUK_UNICODE_MAX_CESU8_BMP_LENGTH));
-
- if (cp == (duk_codepoint_t) '%') {
- const duk_uint8_t *p = tfm_ctx->p;
- duk_size_t left = (duk_size_t) (tfm_ctx->p_end - p); /* bytes left */
-
- DUK_DDD(DUK_DDDPRINT("percent encoding, left=%ld", (long) left));
-
- if (left < 2) {
- goto uri_error;
- }
-
- t = duk__decode_hex_escape(p, 2);
- DUK_DDD(DUK_DDDPRINT("first byte: %ld", (long) t));
- if (t < 0) {
- goto uri_error;
- }
-
- if (t < 0x80) {
- if (DUK__CHECK_BITMASK(reserved_table, t)) {
- /* decode '%xx' to '%xx' if decoded char in reserved set */
- DUK_ASSERT(tfm_ctx->p - 1 >= tfm_ctx->p_start);
- DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr,
- &tfm_ctx->bw,
- DUK_ASC_PERCENT,
- p[0],
- p[1]);
- } else {
- DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) t);
- }
- tfm_ctx->p += 2;
- return;
- }
-
- /* Decode UTF-8 codepoint from a sequence of hex escapes. The
- * first byte of the sequence has been decoded to 't'.
- *
- * Note that UTF-8 validation must be strict according to the
- * specification: E5.1 Section 15.1.3, decode algorithm step
- * 4.d.vii.8. URIError from non-shortest encodings is also
- * specifically noted in the spec.
- */
-
- DUK_ASSERT(t >= 0x80);
- if (t < 0xc0) {
- /* continuation byte */
- goto uri_error;
- } else if (t < 0xe0) {
- /* 110x xxxx; 2 bytes */
- utf8_blen = 2;
- min_cp = 0x80L;
- cp = t & 0x1f;
- } else if (t < 0xf0) {
- /* 1110 xxxx; 3 bytes */
- utf8_blen = 3;
- min_cp = 0x800L;
- cp = t & 0x0f;
- } else if (t < 0xf8) {
- /* 1111 0xxx; 4 bytes */
- utf8_blen = 4;
- min_cp = 0x10000L;
- cp = t & 0x07;
- } else {
- /* extended utf-8 not allowed for URIs */
- goto uri_error;
- }
-
- if (left < utf8_blen * 3 - 1) {
- /* '%xx%xx...%xx', p points to char after first '%' */
- goto uri_error;
- }
-
- p += 3;
- for (i = 1; i < utf8_blen; i++) {
- /* p points to digit part ('%xy', p points to 'x') */
- t = duk__decode_hex_escape(p, 2);
- DUK_DDD(DUK_DDDPRINT("i=%ld utf8_blen=%ld cp=%ld t=0x%02lx",
- (long) i, (long) utf8_blen, (long) cp, (unsigned long) t));
- if (t < 0) {
- goto uri_error;
- }
- if ((t & 0xc0) != 0x80) {
- goto uri_error;
- }
- cp = (cp << 6) + (t & 0x3f);
- p += 3;
- }
- p--; /* p overshoots */
- tfm_ctx->p = p;
-
- DUK_DDD(DUK_DDDPRINT("final cp=%ld, min_cp=%ld", (long) cp, (long) min_cp));
-
- if (cp < min_cp || cp > 0x10ffffL || (cp >= 0xd800L && cp <= 0xdfffL)) {
- goto uri_error;
- }
-
- /* The E5.1 algorithm checks whether or not a decoded codepoint
- * is below 0x80 and perhaps may be in the "reserved" set.
- * This seems pointless because the single byte UTF-8 case is
- * handled separately, and non-shortest encodings are rejected.
- * So, 'cp' cannot be below 0x80 here, and thus cannot be in
- * the reserved set.
- */
-
- /* utf-8 validation ensures these */
- DUK_ASSERT(cp >= 0x80L && cp <= 0x10ffffL);
-
- if (cp >= 0x10000L) {
- cp -= 0x10000L;
- DUK_ASSERT(cp < 0x100000L);
-
- DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, ((cp >> 10) + 0xd800L));
- DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, ((cp & 0x03ffUL) + 0xdc00L));
- } else {
- DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp);
- }
- } else {
- DUK_BW_WRITE_RAW_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp);
- }
- return;
-
- uri_error:
- DUK_ERROR(tfm_ctx->thr, DUK_ERR_URI_ERROR, "invalid input");
-}
-
-#ifdef DUK_USE_SECTION_B
-DUK_LOCAL void duk__transform_callback_escape(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) {
- DUK_UNREF(udata);
-
- DUK_BW_ENSURE(tfm_ctx->thr, &tfm_ctx->bw, 6);
-
- if (cp < 0) {
- goto esc_error;
- } else if ((cp < 0x80L) && DUK__CHECK_BITMASK(duk__escape_unescaped_table, cp)) {
- DUK_BW_WRITE_RAW_U8(tfm_ctx->thr, &tfm_ctx->bw, (duk_uint8_t) cp);
- } else if (cp < 0x100L) {
- DUK_BW_WRITE_RAW_U8_3(tfm_ctx->thr,
- &tfm_ctx->bw,
- (duk_uint8_t) DUK_ASC_PERCENT,
- (duk_uint8_t) duk_uc_nybbles[cp >> 4],
- (duk_uint8_t) duk_uc_nybbles[cp & 0x0f]);
- } else if (cp < 0x10000L) {
- DUK_BW_WRITE_RAW_U8_6(tfm_ctx->thr,
- &tfm_ctx->bw,
- (duk_uint8_t) DUK_ASC_PERCENT,
- (duk_uint8_t) DUK_ASC_LC_U,
- (duk_uint8_t) duk_uc_nybbles[cp >> 12],
- (duk_uint8_t) duk_uc_nybbles[(cp >> 8) & 0x0f],
- (duk_uint8_t) duk_uc_nybbles[(cp >> 4) & 0x0f],
- (duk_uint8_t) duk_uc_nybbles[cp & 0x0f]);
- } else {
- /* Characters outside BMP cannot be escape()'d. We could
- * encode them as surrogate pairs (for codepoints inside
- * valid UTF-8 range, but not extended UTF-8). Because
- * escape() and unescape() are legacy functions, we don't.
- */
- goto esc_error;
- }
-
- return;
-
- esc_error:
- DUK_ERROR_TYPE(tfm_ctx->thr, "invalid input");
-}
-
-DUK_LOCAL void duk__transform_callback_unescape(duk__transform_context *tfm_ctx, const void *udata, duk_codepoint_t cp) {
- duk_small_int_t t;
-
- DUK_UNREF(udata);
-
- if (cp == (duk_codepoint_t) '%') {
- const duk_uint8_t *p = tfm_ctx->p;
- duk_size_t left = (duk_size_t) (tfm_ctx->p_end - p); /* bytes left */
-
- if (left >= 5 && p[0] == 'u' &&
- ((t = duk__decode_hex_escape(p + 1, 4)) >= 0)) {
- cp = (duk_codepoint_t) t;
- tfm_ctx->p += 5;
- } else if (left >= 2 &&
- ((t = duk__decode_hex_escape(p, 2)) >= 0)) {
- cp = (duk_codepoint_t) t;
- tfm_ctx->p += 2;
- }
- }
-
- DUK_BW_WRITE_ENSURE_XUTF8(tfm_ctx->thr, &tfm_ctx->bw, cp);
-}
-#endif /* DUK_USE_SECTION_B */
-
-/*
- * Eval
- *
- * Eval needs to handle both a "direct eval" and an "indirect eval".
- * Direct eval handling needs access to the caller's activation so that its
- * lexical environment can be accessed. A direct eval is only possible from
- * Ecmascript code; an indirect eval call is possible also from C code.
- * When an indirect eval call is made from C code, there may not be a
- * calling activation at all which needs careful handling.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_eval(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h;
- duk_activation *act_caller;
- duk_activation *act_eval;
- duk_activation *act;
- duk_hcompiledfunction *func;
- duk_hobject *outer_lex_env;
- duk_hobject *outer_var_env;
- duk_bool_t this_to_global = 1;
- duk_small_uint_t comp_flags;
- duk_int_t level = -2;
-
- DUK_ASSERT(duk_get_top(ctx) == 1 || duk_get_top(ctx) == 2); /* 2 when called by debugger */
- DUK_ASSERT(thr->callstack_top >= 1); /* at least this function exists */
- DUK_ASSERT(((thr->callstack + thr->callstack_top - 1)->flags & DUK_ACT_FLAG_DIRECT_EVAL) == 0 || /* indirect eval */
- (thr->callstack_top >= 2)); /* if direct eval, calling activation must exist */
-
- /*
- * callstack_top - 1 --> this function
- * callstack_top - 2 --> caller (may not exist)
- *
- * If called directly from C, callstack_top might be 1. If calling
- * activation doesn't exist, call must be indirect.
- */
-
- h = duk_get_hstring(ctx, 0);
- if (!h) {
- return 1; /* return arg as-is */
- }
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- /* NOTE: level is used only by the debugger and should never be present
- * for an Ecmascript eval().
- */
- DUK_ASSERT(level == -2); /* by default, use caller's environment */
- if (duk_get_top(ctx) >= 2 && duk_is_number(ctx, 1)) {
- level = duk_get_int(ctx, 1);
- }
- DUK_ASSERT(level <= -2); /* This is guaranteed by debugger code. */
-#endif
-
- /* [ source ] */
-
- comp_flags = DUK_JS_COMPILE_FLAG_EVAL;
- act_eval = thr->callstack + thr->callstack_top - 1; /* this function */
- if (thr->callstack_top >= (duk_size_t) -level) {
- /* Have a calling activation, check for direct eval (otherwise
- * assume indirect eval.
- */
- act_caller = thr->callstack + thr->callstack_top + level; /* caller */
- if ((act_caller->flags & DUK_ACT_FLAG_STRICT) &&
- (act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL)) {
- /* Only direct eval inherits strictness from calling code
- * (E5.1 Section 10.1.1).
- */
- comp_flags |= DUK_JS_COMPILE_FLAG_STRICT;
- }
- } else {
- DUK_ASSERT((act_eval->flags & DUK_ACT_FLAG_DIRECT_EVAL) == 0);
- }
- act_caller = NULL; /* avoid dereference after potential callstack realloc */
- act_eval = NULL;
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_INPUT); /* XXX: copy from caller? */
- duk_js_compile(thr,
- (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h),
- (duk_size_t) DUK_HSTRING_GET_BYTELEN(h),
- comp_flags);
- func = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) func));
-
- /* [ source template ] */
-
- /* E5 Section 10.4.2 */
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1; /* this function */
- if (act->flags & DUK_ACT_FLAG_DIRECT_EVAL) {
- DUK_ASSERT(thr->callstack_top >= 2);
- act = thr->callstack + thr->callstack_top + level; /* caller */
- if (act->lex_env == NULL) {
- DUK_ASSERT(act->var_env == NULL);
- DUK_DDD(DUK_DDDPRINT("delayed environment initialization"));
-
- /* this may have side effects, so re-lookup act */
- duk_js_init_activation_environment_records_delayed(thr, act);
- act = thr->callstack + thr->callstack_top + level;
- }
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
-
- this_to_global = 0;
-
- if (DUK_HOBJECT_HAS_STRICT((duk_hobject *) func)) {
- duk_hobject *new_env;
- duk_hobject *act_lex_env;
-
- DUK_DDD(DUK_DDDPRINT("direct eval call to a strict function -> "
- "var_env and lex_env to a fresh env, "
- "this_binding to caller's this_binding"));
-
- act = thr->callstack + thr->callstack_top + level; /* caller */
- act_lex_env = act->lex_env;
- act = NULL; /* invalidated */
-
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
- act_lex_env);
- new_env = duk_require_hobject(ctx, -1);
- DUK_ASSERT(new_env != NULL);
- DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO",
- (duk_heaphdr *) new_env));
-
- outer_lex_env = new_env;
- outer_var_env = new_env;
-
- duk_insert(ctx, 0); /* stash to bottom of value stack to keep new_env reachable for duration of eval */
-
- /* compiler's responsibility */
- DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV((duk_hobject *) func));
- } else {
- DUK_DDD(DUK_DDDPRINT("direct eval call to a non-strict function -> "
- "var_env and lex_env to caller's envs, "
- "this_binding to caller's this_binding"));
-
- outer_lex_env = act->lex_env;
- outer_var_env = act->var_env;
-
- /* compiler's responsibility */
- DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV((duk_hobject *) func));
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("indirect eval call -> var_env and lex_env to "
- "global object, this_binding to global object"));
-
- this_to_global = 1;
- outer_lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- outer_var_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- }
- act = NULL;
-
- /* Eval code doesn't need an automatic .prototype object. */
- duk_js_push_closure(thr, func, outer_var_env, outer_lex_env, 0 /*add_auto_proto*/);
-
- /* [ source template closure ] */
-
- if (this_to_global) {
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL);
- duk_push_hobject_bidx(ctx, DUK_BIDX_GLOBAL);
- } else {
- duk_tval *tv;
- DUK_ASSERT(thr->callstack_top >= 2);
- act = thr->callstack + thr->callstack_top + level; /* caller */
- tv = thr->valstack + act->idx_bottom - 1; /* this is just beneath bottom */
- DUK_ASSERT(tv >= thr->valstack);
- duk_push_tval(ctx, tv);
- }
-
- DUK_DDD(DUK_DDDPRINT("eval -> lex_env=%!iO, var_env=%!iO, this_binding=%!T",
- (duk_heaphdr *) outer_lex_env,
- (duk_heaphdr *) outer_var_env,
- duk_get_tval(ctx, -1)));
-
- /* [ source template closure this ] */
-
- duk_call_method(ctx, 0);
-
- /* [ source template result ] */
-
- return 1;
-}
-
-/*
- * Parsing of ints and floats
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_parse_int(duk_context *ctx) {
- duk_int32_t radix;
- duk_small_uint_t s2n_flags;
-
- DUK_ASSERT_TOP(ctx, 2);
- duk_to_string(ctx, 0);
-
- radix = duk_to_int32(ctx, 1);
-
- s2n_flags = DUK_S2N_FLAG_TRIM_WHITE |
- DUK_S2N_FLAG_ALLOW_GARBAGE |
- DUK_S2N_FLAG_ALLOW_PLUS |
- DUK_S2N_FLAG_ALLOW_MINUS |
- DUK_S2N_FLAG_ALLOW_LEADING_ZERO |
- DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT;
-
- /* Specification stripPrefix maps to DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT.
- *
- * Don't autodetect octals (from leading zeroes), require user code to
- * provide an explicit radix 8 for parsing octal. See write-up from Mozilla:
- * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseInt#ECMAScript_5_Removes_Octal_Interpretation
- */
-
- if (radix != 0) {
- if (radix < 2 || radix > 36) {
- goto ret_nan;
- }
- if (radix != 16) {
- s2n_flags &= ~DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT;
- }
- } else {
- radix = 10;
- }
-
- duk_dup(ctx, 0);
- duk_numconv_parse(ctx, radix, s2n_flags);
- return 1;
-
- ret_nan:
- duk_push_nan(ctx);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_parse_float(duk_context *ctx) {
- duk_small_uint_t s2n_flags;
- duk_int32_t radix;
-
- DUK_ASSERT_TOP(ctx, 1);
- duk_to_string(ctx, 0);
-
- radix = 10;
-
- /* XXX: check flags */
- s2n_flags = DUK_S2N_FLAG_TRIM_WHITE |
- DUK_S2N_FLAG_ALLOW_EXP |
- DUK_S2N_FLAG_ALLOW_GARBAGE |
- DUK_S2N_FLAG_ALLOW_PLUS |
- DUK_S2N_FLAG_ALLOW_MINUS |
- DUK_S2N_FLAG_ALLOW_INF |
- DUK_S2N_FLAG_ALLOW_FRAC |
- DUK_S2N_FLAG_ALLOW_NAKED_FRAC |
- DUK_S2N_FLAG_ALLOW_EMPTY_FRAC |
- DUK_S2N_FLAG_ALLOW_LEADING_ZERO;
-
- duk_numconv_parse(ctx, radix, s2n_flags);
- return 1;
-}
-
-/*
- * Number checkers
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_is_nan(duk_context *ctx) {
- duk_double_t d = duk_to_number(ctx, 0);
- duk_push_boolean(ctx, DUK_ISNAN(d));
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_is_finite(duk_context *ctx) {
- duk_double_t d = duk_to_number(ctx, 0);
- duk_push_boolean(ctx, DUK_ISFINITE(d));
- return 1;
-}
-
-/*
- * URI handling
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_decode_uri(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_decode_uri, (const void *) duk__decode_uri_reserved_table);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_decode_uri_component(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_decode_uri, (const void *) duk__decode_uri_component_reserved_table);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_encode_uri(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_encode_uri, (const void *) duk__encode_uriunescaped_table);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_encode_uri_component(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_encode_uri, (const void *) duk__encode_uricomponent_unescaped_table);
-}
-
-#ifdef DUK_USE_SECTION_B
-DUK_INTERNAL duk_ret_t duk_bi_global_object_escape(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_escape, (const void *) NULL);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_unescape(duk_context *ctx) {
- return duk__transform_helper(ctx, duk__transform_callback_unescape, (const void *) NULL);
-}
-#else /* DUK_USE_SECTION_B */
-DUK_INTERNAL duk_ret_t duk_bi_global_object_escape(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_unescape(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_SECTION_B */
-
-#if defined(DUK_USE_BROWSER_LIKE) && (defined(DUK_USE_FILE_IO) || defined(DUK_USE_DEBUGGER_SUPPORT))
-DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_int_t magic;
- duk_idx_t nargs;
- const duk_uint8_t *buf;
- duk_size_t sz_buf;
- const char nl = (const char) DUK_ASC_LF;
-#ifndef DUK_USE_PREFER_SIZE
- duk_uint8_t buf_stack[256];
-#endif
-#ifdef DUK_USE_FILE_IO
- duk_file *f_out;
-#endif
-
- DUK_UNREF(thr);
-
- magic = duk_get_current_magic(ctx);
- DUK_UNREF(magic);
-
- nargs = duk_get_top(ctx);
-
- /* If argument count is 1 and first argument is a buffer, write the buffer
- * as raw data into the file without a newline; this allows exact control
- * over stdout/stderr without an additional entrypoint (useful for now).
- *
- * Otherwise current print/alert semantics are to ToString() coerce
- * arguments, join them with a single space, and append a newline.
- */
-
- if (nargs == 1 && duk_is_buffer(ctx, 0)) {
- buf = (const duk_uint8_t *) duk_get_buffer(ctx, 0, &sz_buf);
- DUK_ASSERT(buf != NULL);
- } else if (nargs > 0) {
-#ifdef DUK_USE_PREFER_SIZE
- /* Compact but lots of churn. */
- duk_push_hstring_stridx(thr, DUK_STRIDX_SPACE);
- duk_insert(ctx, 0);
- duk_join(ctx, nargs);
- duk_push_string(thr, "\n");
- duk_concat(ctx, 2);
- buf = (const duk_uint8_t *) duk_get_lstring(ctx, -1, &sz_buf);
- DUK_ASSERT(buf != NULL);
-#else /* DUK_USE_PREFER_SIZE */
- /* Higher footprint, less churn. */
- duk_idx_t i;
- duk_size_t sz_str;
- const duk_uint8_t *p_str;
- duk_uint8_t *p;
-
- sz_buf = (duk_size_t) nargs; /* spaces (nargs - 1) + newline */
- for (i = 0; i < nargs; i++) {
- (void) duk_to_lstring(ctx, i, &sz_str);
- sz_buf += sz_str;
- }
-
- if (sz_buf <= sizeof(buf_stack)) {
- p = (duk_uint8_t *) buf_stack;
- } else {
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, sz_buf);
- DUK_ASSERT(p != NULL);
- }
-
- buf = (const duk_uint8_t *) p;
- for (i = 0; i < nargs; i++) {
- p_str = (const duk_uint8_t *) duk_get_lstring(ctx, i, &sz_str);
- DUK_ASSERT(p_str != NULL);
- DUK_MEMCPY((void *) p, (const void *) p_str, sz_str);
- p += sz_str;
- *p++ = (duk_uint8_t) (i == nargs - 1 ? DUK_ASC_LF : DUK_ASC_SPACE);
- }
- DUK_ASSERT((const duk_uint8_t *) p == buf + sz_buf);
-#endif /* DUK_USE_PREFER_SIZE */
- } else {
- buf = (const duk_uint8_t *) &nl;
- sz_buf = 1;
- }
-
- /* 'buf' contains the string to write, 'sz_buf' contains the length
- * (which may be zero).
- */
- DUK_ASSERT(buf != NULL);
-
- if (sz_buf == 0) {
- return 0;
- }
-
-#ifdef DUK_USE_FILE_IO
- f_out = (magic ? DUK_STDERR : DUK_STDOUT);
- DUK_FWRITE((const void *) buf, 1, (size_t) sz_buf, f_out);
- DUK_FFLUSH(f_out);
-#endif
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) && defined(DUK_USE_DEBUGGER_FWD_PRINTALERT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- duk_debug_write_notify(thr, magic ? DUK_DBG_CMD_ALERT : DUK_DBG_CMD_PRINT);
- duk_debug_write_string(thr, (const char *) buf, sz_buf);
- duk_debug_write_eom(thr);
- }
-#endif
- return 0;
-}
-#elif defined(DUK_USE_BROWSER_LIKE) /* print provider */
-DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) {
- DUK_UNREF(ctx);
- return 0;
-}
-#else /* print provider */
-DUK_INTERNAL duk_ret_t duk_bi_global_object_print_helper(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* print provider */
-
-/*
- * CommonJS require() and modules support
- */
-
-#if defined(DUK_USE_COMMONJS_MODULES)
-DUK_LOCAL void duk__bi_global_resolve_module_id(duk_context *ctx, const char *req_id, const char *mod_id) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uint8_t buf[DUK_BI_COMMONJS_MODULE_ID_LIMIT];
- duk_uint8_t *p;
- duk_uint8_t *q;
- duk_uint8_t *q_last; /* last component */
- duk_int_t int_rc;
-
- DUK_ASSERT(req_id != NULL);
- /* mod_id may be NULL */
-
- /*
- * A few notes on the algorithm:
- *
- * - Terms are not allowed to begin with a period unless the term
- * is either '.' or '..'. This simplifies implementation (and
- * is within CommonJS modules specification).
- *
- * - There are few output bound checks here. This is on purpose:
- * the resolution input is length checked and the output is never
- * longer than the input. The resolved output is written directly
- * over the input because it's never longer than the input at any
- * point in the algorithm.
- *
- * - Non-ASCII characters are processed as individual bytes and
- * need no special treatment. However, U+0000 terminates the
- * algorithm; this is not an issue because U+0000 is not a
- * desirable term character anyway.
- */
-
- /*
- * Set up the resolution input which is the requested ID directly
- * (if absolute or no current module path) or with current module
- * ID prepended (if relative and current module path exists).
- *
- * Suppose current module is 'foo/bar' and relative path is './quux'.
- * The 'bar' component must be replaced so the initial input here is
- * 'foo/bar/.././quux'.
- */
-
- if (mod_id != NULL && req_id[0] == '.') {
- int_rc = DUK_SNPRINTF((char *) buf, sizeof(buf), "%s/../%s", mod_id, req_id);
- } else {
- int_rc = DUK_SNPRINTF((char *) buf, sizeof(buf), "%s", req_id);
- }
- if (int_rc >= (duk_int_t) sizeof(buf) || int_rc < 0) {
- /* Potentially truncated, NUL not guaranteed in any case.
- * The (int_rc < 0) case should not occur in practice.
- */
- DUK_DD(DUK_DDPRINT("resolve error: temporary working module ID doesn't fit into resolve buffer"));
- goto resolve_error;
- }
- DUK_ASSERT(DUK_STRLEN((const char *) buf) < sizeof(buf)); /* at most sizeof(buf) - 1 */
-
- DUK_DDD(DUK_DDDPRINT("input module id: '%s'", (const char *) buf));
-
- /*
- * Resolution loop. At the top of the loop we're expecting a valid
- * term: '.', '..', or a non-empty identifier not starting with a period.
- */
-
- p = buf;
- q = buf;
- for (;;) {
- duk_uint_fast8_t c;
-
- /* Here 'p' always points to the start of a term.
- *
- * We can also unconditionally reset q_last here: if this is
- * the last (non-empty) term q_last will have the right value
- * on loop exit.
- */
-
- DUK_ASSERT(p >= q); /* output is never longer than input during resolution */
-
- DUK_DDD(DUK_DDDPRINT("resolve loop top: p -> '%s', q=%p, buf=%p",
- (const char *) p, (void *) q, (void *) buf));
-
- q_last = q;
-
- c = *p++;
- if (DUK_UNLIKELY(c == 0)) {
- DUK_DD(DUK_DDPRINT("resolve error: requested ID must end with a non-empty term"));
- goto resolve_error;
- } else if (DUK_UNLIKELY(c == '.')) {
- c = *p++;
- if (c == '/') {
- /* Term was '.' and is eaten entirely (including dup slashes). */
- goto eat_dup_slashes;
- }
- if (c == '.' && *p == '/') {
- /* Term was '..', backtrack resolved name by one component.
- * q[-1] = previous slash (or beyond start of buffer)
- * q[-2] = last char of previous component (or beyond start of buffer)
- */
- p++; /* eat (first) input slash */
- DUK_ASSERT(q >= buf);
- if (q == buf) {
- DUK_DD(DUK_DDPRINT("resolve error: term was '..' but nothing to backtrack"));
- goto resolve_error;
- }
- DUK_ASSERT(*(q - 1) == '/');
- q--; /* backtrack to last output slash (dups already eliminated) */
- for (;;) {
- /* Backtrack to previous slash or start of buffer. */
- DUK_ASSERT(q >= buf);
- if (q == buf) {
- break;
- }
- if (*(q - 1) == '/') {
- break;
- }
- q--;
- }
- goto eat_dup_slashes;
- }
- DUK_DD(DUK_DDPRINT("resolve error: term begins with '.' but is not '.' or '..' (not allowed now)"));
- goto resolve_error;
- } else if (DUK_UNLIKELY(c == '/')) {
- /* e.g. require('/foo'), empty terms not allowed */
- DUK_DD(DUK_DDPRINT("resolve error: empty term (not allowed now)"));
- goto resolve_error;
- } else {
- for (;;) {
- /* Copy term name until end or '/'. */
- *q++ = c;
- c = *p++;
- if (DUK_UNLIKELY(c == 0)) {
- /* This was the last term, and q_last was
- * updated to match this term at loop top.
- */
- goto loop_done;
- } else if (DUK_UNLIKELY(c == '/')) {
- *q++ = '/';
- break;
- } else {
- /* write on next loop */
- }
- }
- }
-
- eat_dup_slashes:
- for (;;) {
- /* eat dup slashes */
- c = *p;
- if (DUK_LIKELY(c != '/')) {
- break;
- }
- p++;
- }
- }
- loop_done:
- /* Output #1: resolved absolute name */
- DUK_ASSERT(q >= buf);
- duk_push_lstring(ctx, (const char *) buf, (size_t) (q - buf));
-
- /* Output #2: last component name */
- DUK_ASSERT(q >= q_last);
- DUK_ASSERT(q_last >= buf);
- duk_push_lstring(ctx, (const char *) q_last, (size_t) (q - q_last));
-
- DUK_DD(DUK_DDPRINT("after resolving module name: buf=%p, q_last=%p, q=%p",
- (void *) buf, (void *) q_last, (void *) q));
- return;
-
- resolve_error:
- DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "cannot resolve module id: %s", (const char *) req_id);
-}
-#endif /* DUK_USE_COMMONJS_MODULES */
-
-#if defined(DUK_USE_COMMONJS_MODULES)
-/* Stack indices for better readability */
-#define DUK__IDX_REQUESTED_ID 0 /* Module id requested */
-#define DUK__IDX_REQUIRE 1 /* Current require() function */
-#define DUK__IDX_REQUIRE_ID 2 /* The base ID of the current require() function, resolution base */
-#define DUK__IDX_RESOLVED_ID 3 /* Resolved, normalized absolute module ID */
-#define DUK__IDX_LASTCOMP 4 /* Last component name in resolved path */
-#define DUK__IDX_DUKTAPE 5 /* Duktape object */
-#define DUK__IDX_MODLOADED 6 /* Duktape.modLoaded[] module cache */
-#define DUK__IDX_UNDEFINED 7 /* 'undefined', artifact of lookup */
-#define DUK__IDX_FRESH_REQUIRE 8 /* New require() function for module, updated resolution base */
-#define DUK__IDX_EXPORTS 9 /* Default exports table */
-#define DUK__IDX_MODULE 10 /* Module object containing module.exports, etc */
-
-DUK_INTERNAL duk_ret_t duk_bi_global_object_require(duk_context *ctx) {
- const char *str_req_id; /* requested identifier */
- const char *str_mod_id; /* require.id of current module */
- duk_int_t pcall_rc;
-
- /* NOTE: we try to minimize code size by avoiding unnecessary pops,
- * so the stack looks a bit cluttered in this function. DUK_ASSERT_TOP()
- * assertions are used to ensure stack configuration is correct at each
- * step.
- */
-
- /*
- * Resolve module identifier into canonical absolute form.
- */
-
- str_req_id = duk_require_string(ctx, DUK__IDX_REQUESTED_ID);
- duk_push_current_function(ctx);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_ID);
- str_mod_id = duk_get_string(ctx, DUK__IDX_REQUIRE_ID); /* ignore non-strings */
- DUK_DDD(DUK_DDDPRINT("resolve module id: requested=%!T, currentmodule=%!T",
- duk_get_tval(ctx, DUK__IDX_REQUESTED_ID),
- duk_get_tval(ctx, DUK__IDX_REQUIRE_ID)));
- duk__bi_global_resolve_module_id(ctx, str_req_id, str_mod_id);
- str_req_id = NULL;
- str_mod_id = NULL;
- DUK_DDD(DUK_DDDPRINT("resolved module id: requested=%!T, currentmodule=%!T, result=%!T, lastcomp=%!T",
- duk_get_tval(ctx, DUK__IDX_REQUESTED_ID),
- duk_get_tval(ctx, DUK__IDX_REQUIRE_ID),
- duk_get_tval(ctx, DUK__IDX_RESOLVED_ID),
- duk_get_tval(ctx, DUK__IDX_LASTCOMP)));
-
- /* [ requested_id require require.id resolved_id last_comp ] */
- DUK_ASSERT_TOP(ctx, DUK__IDX_LASTCOMP + 1);
-
- /*
- * Cached module check.
- *
- * If module has been loaded or its loading has already begun without
- * finishing, return the same cached value ('exports'). The value is
- * registered when module load starts so that circular references can
- * be supported to some extent.
- */
-
- duk_push_hobject_bidx(ctx, DUK_BIDX_DUKTAPE);
- duk_get_prop_stridx(ctx, DUK__IDX_DUKTAPE, DUK_STRIDX_MOD_LOADED); /* Duktape.modLoaded */
- (void) duk_require_hobject(ctx, DUK__IDX_MODLOADED);
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODLOADED + 1);
-
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- if (duk_get_prop(ctx, DUK__IDX_MODLOADED)) {
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded Duktape.modLoaded[id] ] */
- DUK_DD(DUK_DDPRINT("module already loaded: %!T",
- duk_get_tval(ctx, DUK__IDX_RESOLVED_ID)));
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_EXPORTS); /* return module.exports */
- return 1;
- }
- DUK_ASSERT_TOP(ctx, DUK__IDX_UNDEFINED + 1);
-
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined ] */
-
- /*
- * Module not loaded (and loading not started previously).
- *
- * Create a new require() function with 'id' set to resolved ID
- * of module being loaded. Also create 'exports' and 'module'
- * tables but don't register exports to the loaded table yet.
- * We don't want to do that unless the user module search callbacks
- * succeeds in finding the module.
- */
-
- DUK_D(DUK_DPRINT("loading module %!T, resolution base %!T, requested ID %!T -> resolved ID %!T, last component %!T",
- duk_get_tval(ctx, DUK__IDX_RESOLVED_ID),
- duk_get_tval(ctx, DUK__IDX_REQUIRE_ID),
- duk_get_tval(ctx, DUK__IDX_REQUESTED_ID),
- duk_get_tval(ctx, DUK__IDX_RESOLVED_ID),
- duk_get_tval(ctx, DUK__IDX_LASTCOMP)));
-
- /* Fresh require: require.id is left configurable (but not writable)
- * so that is not easy to accidentally tweak it, but it can still be
- * done with Object.defineProperty().
- *
- * XXX: require.id could also be just made non-configurable, as there
- * is no practical reason to touch it.
- */
- duk_push_c_function(ctx, duk_bi_global_object_require, 1 /*nargs*/);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_REQUIRE);
- duk_xdef_prop_stridx(ctx, DUK__IDX_FRESH_REQUIRE, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- duk_xdef_prop_stridx(ctx, DUK__IDX_FRESH_REQUIRE, DUK_STRIDX_ID, DUK_PROPDESC_FLAGS_C); /* a fresh require() with require.id = resolved target module id */
-
- /* Module table:
- * - module.exports: initial exports table (may be replaced by user)
- * - module.id is non-writable and non-configurable, as the CommonJS
- * spec suggests this if possible
- * - module.filename: not set, defaults to resolved ID if not explicitly
- * set by modSearch() (note capitalization, not .fileName, matches Node.js)
- * - module.name: not set, defaults to last component of resolved ID if
- * not explicitly set by modSearch()
- */
- duk_push_object(ctx); /* exports */
- duk_push_object(ctx); /* module */
- duk_dup(ctx, DUK__IDX_EXPORTS);
- duk_xdef_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_EXPORTS, DUK_PROPDESC_FLAGS_WC); /* module.exports = exports */
- duk_dup(ctx, DUK__IDX_RESOLVED_ID); /* resolved id: require(id) must return this same module */
- duk_xdef_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_ID, DUK_PROPDESC_FLAGS_NONE); /* module.id = resolved_id */
- duk_compact(ctx, DUK__IDX_MODULE); /* module table remains registered to modLoaded, minimize its size */
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODULE + 1);
-
- DUK_DD(DUK_DDPRINT("module table created: %!T", duk_get_tval(ctx, DUK__IDX_MODULE)));
-
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module ] */
-
- /* Register the module table early to modLoaded[] so that we can
- * support circular references even in modSearch(). If an error
- * is thrown, we'll delete the reference.
- */
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- duk_dup(ctx, DUK__IDX_MODULE);
- duk_put_prop(ctx, DUK__IDX_MODLOADED); /* Duktape.modLoaded[resolved_id] = module */
-
- /*
- * Call user provided module search function and build the wrapped
- * module source code (if necessary). The module search function
- * can be used to implement pure Ecmacsript, pure C, and mixed
- * Ecmascript/C modules.
- *
- * The module search function can operate on the exports table directly
- * (e.g. DLL code can register values to it). It can also return a
- * string which is interpreted as module source code (if a non-string
- * is returned the module is assumed to be a pure C one). If a module
- * cannot be found, an error must be thrown by the user callback.
- *
- * Because Duktape.modLoaded[] already contains the module being
- * loaded, circular references for C modules should also work
- * (although expected to be quite rare).
- */
-
- duk_push_string(ctx, "(function(require,exports,module){");
-
- /* Duktape.modSearch(resolved_id, fresh_require, exports, module). */
- duk_get_prop_stridx(ctx, DUK__IDX_DUKTAPE, DUK_STRIDX_MOD_SEARCH); /* Duktape.modSearch */
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- duk_dup(ctx, DUK__IDX_FRESH_REQUIRE);
- duk_dup(ctx, DUK__IDX_EXPORTS);
- duk_dup(ctx, DUK__IDX_MODULE); /* [ ... Duktape.modSearch resolved_id last_comp fresh_require exports module ] */
- pcall_rc = duk_pcall(ctx, 4 /*nargs*/); /* -> [ ... source ] */
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODULE + 3);
-
- if (pcall_rc != DUK_EXEC_SUCCESS) {
- /* Delete entry in Duktape.modLoaded[] and rethrow. */
- goto delete_rethrow;
- }
-
- /* If user callback did not return source code, module loading
- * is finished (user callback initialized exports table directly).
- */
- if (!duk_is_string(ctx, -1)) {
- /* User callback did not return source code, so module loading
- * is finished: just update modLoaded with final module.exports
- * and we're done.
- */
- goto return_exports;
- }
-
- /* Finish the wrapped module source. Force module.filename as the
- * function .fileName so it gets set for functions defined within a
- * module. This also ensures loggers created within the module get
- * the module ID (or overridden filename) as their default logger name.
- * (Note capitalization: .filename matches Node.js while .fileName is
- * used elsewhere in Duktape.)
- */
- duk_push_string(ctx, "})");
- duk_concat(ctx, 3);
- if (!duk_get_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_FILENAME)) {
- /* module.filename for .fileName, default to resolved ID if
- * not present.
- */
- duk_pop(ctx);
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- }
- duk_eval_raw(ctx, NULL, 0, DUK_COMPILE_EVAL);
-
- /* Module has now evaluated to a wrapped module function. Force its
- * .name to match module.name (defaults to last component of resolved
- * ID) so that it is shown in stack traces too. Note that we must not
- * introduce an actual name binding into the function scope (which is
- * usually the case with a named function) because it would affect the
- * scope seen by the module and shadow accesses to globals of the same name.
- * This is now done by compiling the function as anonymous and then forcing
- * its .name without setting a "has name binding" flag.
- */
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_NAME);
- if (!duk_get_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_NAME)) {
- /* module.name for .name, default to last component if
- * not present.
- */
- duk_pop(ctx);
- duk_dup(ctx, DUK__IDX_LASTCOMP);
- }
- duk_def_prop(ctx, -3, DUK_DEFPROP_HAVE_VALUE | DUK_DEFPROP_FORCE);
-
- /*
- * Call the wrapped module function.
- *
- * Use a protected call so that we can update Duktape.modLoaded[resolved_id]
- * even if the module throws an error.
- */
-
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module mod_func ] */
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODULE + 2);
-
- duk_dup(ctx, DUK__IDX_EXPORTS); /* exports (this binding) */
- duk_dup(ctx, DUK__IDX_FRESH_REQUIRE); /* fresh require (argument) */
- duk_get_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_EXPORTS); /* relookup exports from module.exports in case it was changed by modSearch */
- duk_dup(ctx, DUK__IDX_MODULE); /* module (argument) */
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODULE + 6);
-
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module mod_func exports fresh_require exports module ] */
-
- pcall_rc = duk_pcall_method(ctx, 3 /*nargs*/);
- if (pcall_rc != DUK_EXEC_SUCCESS) {
- /* Module loading failed. Node.js will forget the module
- * registration so that another require() will try to load
- * the module again. Mimic that behavior.
- */
- goto delete_rethrow;
- }
-
- /* [ requested_id require require.id resolved_id last_comp Duktape Duktape.modLoaded undefined fresh_require exports module result(ignored) ] */
- DUK_ASSERT_TOP(ctx, DUK__IDX_MODULE + 2);
-
- /* fall through */
-
- return_exports:
- duk_get_prop_stridx(ctx, DUK__IDX_MODULE, DUK_STRIDX_EXPORTS);
- duk_compact(ctx, -1); /* compact the exports table */
- return 1; /* return module.exports */
-
- delete_rethrow:
- duk_dup(ctx, DUK__IDX_RESOLVED_ID);
- duk_del_prop(ctx, DUK__IDX_MODLOADED); /* delete Duktape.modLoaded[resolved_id] */
- duk_throw(ctx); /* rethrow original error */
- return 0; /* not reachable */
-}
-
-#undef DUK__IDX_REQUESTED_ID
-#undef DUK__IDX_REQUIRE
-#undef DUK__IDX_REQUIRE_ID
-#undef DUK__IDX_RESOLVED_ID
-#undef DUK__IDX_LASTCOMP
-#undef DUK__IDX_DUKTAPE
-#undef DUK__IDX_MODLOADED
-#undef DUK__IDX_UNDEFINED
-#undef DUK__IDX_FRESH_REQUIRE
-#undef DUK__IDX_EXPORTS
-#undef DUK__IDX_MODULE
-#else
-DUK_INTERNAL duk_ret_t duk_bi_global_object_require(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_COMMONJS_MODULES */
-#line 1 "duk_bi_json.c"
-/*
- * JSON built-ins.
- *
- * See doc/json.rst.
- *
- * Codepoints are handled as duk_uint_fast32_t to ensure that the full
- * unsigned 32-bit range is supported. This matters to e.g. JX.
- *
- * Input parsing doesn't do an explicit end-of-input check at all. This is
- * safe: input string data is always NUL-terminated (0x00) and valid JSON
- * inputs never contain plain NUL characters, so that as long as syntax checks
- * are correct, we'll never read past the NUL. This approach reduces code size
- * and improves parsing performance, but it's critical that syntax checks are
- * indeed correct!
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Local defines and forward declarations.
- */
-
-#define DUK__JSON_DECSTR_BUFSIZE 128
-#define DUK__JSON_DECSTR_CHUNKSIZE 64
-#define DUK__JSON_ENCSTR_CHUNKSIZE 64
-#define DUK__JSON_STRINGIFY_BUFSIZE 128
-#define DUK__JSON_MAX_ESC_LEN 10 /* '\Udeadbeef' */
-
-DUK_LOCAL_DECL void duk__dec_syntax_error(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_eat_white(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL duk_uint8_t duk__dec_peek(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL duk_uint8_t duk__dec_get(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL duk_uint8_t duk__dec_get_nonwhite(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL duk_uint_fast32_t duk__dec_decode_hex_escape(duk_json_dec_ctx *js_ctx, duk_small_uint_t n);
-DUK_LOCAL_DECL void duk__dec_req_stridx(duk_json_dec_ctx *js_ctx, duk_small_uint_t stridx);
-DUK_LOCAL_DECL void duk__dec_string(duk_json_dec_ctx *js_ctx);
-#ifdef DUK_USE_JX
-DUK_LOCAL_DECL void duk__dec_plain_string(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_pointer(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_buffer(duk_json_dec_ctx *js_ctx);
-#endif
-DUK_LOCAL_DECL void duk__dec_number(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_objarr_entry(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_objarr_exit(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_object(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_array(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_value(duk_json_dec_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__dec_reviver_walk(duk_json_dec_ctx *js_ctx);
-
-DUK_LOCAL_DECL void duk__emit_1(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch);
-DUK_LOCAL_DECL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1, duk_uint_fast8_t ch2);
-DUK_LOCAL_DECL void duk__unemit_1(duk_json_enc_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h);
-#if defined(DUK_USE_FASTINT)
-DUK_LOCAL_DECL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *p);
-#endif
-DUK_LOCAL_DECL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx);
-DUK_LOCAL_DECL duk_uint8_t *duk__emit_esc_auto_fast(duk_json_enc_ctx *js_ctx, duk_uint_fast32_t cp, duk_uint8_t *q);
-DUK_LOCAL_DECL void duk__enc_key_autoquote(duk_json_enc_ctx *js_ctx, duk_hstring *k);
-DUK_LOCAL_DECL void duk__enc_quote_string(duk_json_enc_ctx *js_ctx, duk_hstring *h_str);
-DUK_LOCAL_DECL void duk__enc_objarr_entry(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top);
-DUK_LOCAL_DECL void duk__enc_objarr_exit(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top);
-DUK_LOCAL_DECL void duk__enc_object(duk_json_enc_ctx *js_ctx);
-DUK_LOCAL_DECL void duk__enc_array(duk_json_enc_ctx *js_ctx);
-DUK_LOCAL_DECL duk_bool_t duk__enc_value(duk_json_enc_ctx *js_ctx, duk_idx_t idx_holder);
-DUK_LOCAL_DECL duk_bool_t duk__enc_allow_into_proplist(duk_tval *tv);
-DUK_LOCAL_DECL void duk__enc_double(duk_json_enc_ctx *js_ctx);
-#if defined(DUK_USE_FASTINT)
-DUK_LOCAL_DECL void duk__enc_fastint_tval(duk_json_enc_ctx *js_ctx, duk_tval *tv);
-#endif
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
-DUK_LOCAL_DECL void duk__enc_buffer(duk_json_enc_ctx *js_ctx, duk_hbuffer *h);
-DUK_LOCAL_DECL void duk__enc_pointer(duk_json_enc_ctx *js_ctx, void *ptr);
-DUK_LOCAL_DECL void duk__enc_bufferobject(duk_json_enc_ctx *js_ctx, duk_hbufferobject *h_bufobj);
-#endif
-DUK_LOCAL_DECL void duk__enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_int_t depth);
-
-/*
- * Helper tables
- */
-
-#if defined(DUK_USE_JSON_QUOTESTRING_FASTPATH)
-DUK_LOCAL const duk_uint8_t duk__json_quotestr_lookup[256] = {
- /* 0x00 ... 0x7f: as is
- * 0x80: escape generically
- * 0x81: slow path
- * 0xa0 ... 0xff: backslash + one char
- */
-
- 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0xe2, 0xf4, 0xee, 0x80, 0xe6, 0xf2, 0x80, 0x80,
- 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
- 0x20, 0x21, 0xa2, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
- 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
- 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
- 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0xdc, 0x5d, 0x5e, 0x5f,
- 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
- 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81,
- 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81
-};
-#else /* DUK_USE_JSON_QUOTESTRING_FASTPATH */
-DUK_LOCAL const duk_uint8_t duk__json_quotestr_esc[14] = {
- DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL,
- DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL, DUK_ASC_NUL,
- DUK_ASC_LC_B, DUK_ASC_LC_T, DUK_ASC_LC_N, DUK_ASC_NUL,
- DUK_ASC_LC_F, DUK_ASC_LC_R
-};
-#endif /* DUK_USE_JSON_QUOTESTRING_FASTPATH */
-
-#if defined(DUK_USE_JSON_DECSTRING_FASTPATH)
-DUK_LOCAL const duk_uint8_t duk__json_decstr_lookup[256] = {
- /* 0x00: slow path
- * other: as is
- */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x20, 0x21, 0x00, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
- 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
- 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
- 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x00, 0x5d, 0x5e, 0x5f,
- 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
- 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
- 0x80, 0x81, 0x82, 0x83, 0x84, 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8c, 0x8d, 0x8e, 0x8f,
- 0x90, 0x91, 0x92, 0x93, 0x94, 0x95, 0x96, 0x97, 0x98, 0x99, 0x9a, 0x9b, 0x9c, 0x9d, 0x9e, 0x9f,
- 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7, 0xa8, 0xa9, 0xaa, 0xab, 0xac, 0xad, 0xae, 0xaf,
- 0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7, 0xb8, 0xb9, 0xba, 0xbb, 0xbc, 0xbd, 0xbe, 0xbf,
- 0xc0, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7, 0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
- 0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd7, 0xd8, 0xd9, 0xda, 0xdb, 0xdc, 0xdd, 0xde, 0xdf,
- 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0xe7, 0xe8, 0xe9, 0xea, 0xeb, 0xec, 0xed, 0xee, 0xef,
- 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff
-};
-#endif /* DUK_USE_JSON_DECSTRING_FASTPATH */
-
-#if defined(DUK_USE_JSON_EATWHITE_FASTPATH)
-DUK_LOCAL const duk_uint8_t duk__json_eatwhite_lookup[256] = {
- /* 0x00: finish (non-white)
- * 0x01: continue
- */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x01, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-#endif /* DUK_USE_JSON_EATWHITE_FASTPATH */
-
-#if defined(DUK_USE_JSON_DECNUMBER_FASTPATH)
-DUK_LOCAL const duk_uint8_t duk__json_decnumber_lookup[256] = {
- /* 0x00: finish (not part of number)
- * 0x01: continue
- */
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x01, 0x01, 0x00,
- 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
-};
-#endif /* DUK_USE_JSON_DECNUMBER_FASTPATH */
-
-/*
- * Parsing implementation.
- *
- * JSON lexer is now separate from duk_lexer.c because there are numerous
- * small differences making it difficult to share the lexer.
- *
- * The parser here works with raw bytes directly; this works because all
- * JSON delimiters are ASCII characters. Invalid xUTF-8 encoded values
- * inside strings will be passed on without normalization; this is not a
- * compliance concern because compliant inputs will always be valid
- * CESU-8 encodings.
- */
-
-DUK_LOCAL void duk__dec_syntax_error(duk_json_dec_ctx *js_ctx) {
- /* Shared handler to minimize parser size. Cause will be
- * hidden, unfortunately, but we'll have an offset which
- * is often quite enough.
- */
- DUK_ERROR_FMT1(js_ctx->thr, DUK_ERR_SYNTAX_ERROR, DUK_STR_FMT_INVALID_JSON,
- (long) (js_ctx->p - js_ctx->p_start));
-}
-
-DUK_LOCAL void duk__dec_eat_white(duk_json_dec_ctx *js_ctx) {
- const duk_uint8_t *p;
- duk_uint8_t t;
-
- p = js_ctx->p;
- for (;;) {
- DUK_ASSERT(p <= js_ctx->p_end);
- t = *p;
-
-#if defined(DUK_USE_JSON_EATWHITE_FASTPATH)
- /* This fast path is pretty marginal in practice.
- * XXX: candidate for removal.
- */
- DUK_ASSERT(duk__json_eatwhite_lookup[0x00] == 0x00); /* end-of-input breaks */
- if (duk__json_eatwhite_lookup[t] == 0) {
- break;
- }
-#else /* DUK_USE_JSON_EATWHITE_FASTPATH */
- if (!(t == 0x20 || t == 0x0a || t == 0x0d || t == 0x09)) {
- /* NUL also comes here. Comparison order matters, 0x20
- * is most common whitespace.
- */
- break;
- }
-#endif /* DUK_USE_JSON_EATWHITE_FASTPATH */
- p++;
- }
- js_ctx->p = p;
-}
-
-DUK_LOCAL duk_uint8_t duk__dec_peek(duk_json_dec_ctx *js_ctx) {
- DUK_ASSERT(js_ctx->p <= js_ctx->p_end);
- return *js_ctx->p;
-}
-
-DUK_LOCAL duk_uint8_t duk__dec_get(duk_json_dec_ctx *js_ctx) {
- DUK_ASSERT(js_ctx->p <= js_ctx->p_end);
- return *js_ctx->p++;
-}
-
-DUK_LOCAL duk_uint8_t duk__dec_get_nonwhite(duk_json_dec_ctx *js_ctx) {
- duk__dec_eat_white(js_ctx);
- return duk__dec_get(js_ctx);
-}
-
-/* For JX, expressing the whole unsigned 32-bit range matters. */
-DUK_LOCAL duk_uint_fast32_t duk__dec_decode_hex_escape(duk_json_dec_ctx *js_ctx, duk_small_uint_t n) {
- duk_small_uint_t i;
- duk_uint_fast32_t res = 0;
- duk_uint8_t x;
- duk_small_int_t t;
-
- for (i = 0; i < n; i++) {
- /* XXX: share helper from lexer; duk_lexer.c / hexval(). */
-
- x = duk__dec_get(js_ctx);
- DUK_DDD(DUK_DDDPRINT("decode_hex_escape: i=%ld, n=%ld, res=%ld, x=%ld",
- (long) i, (long) n, (long) res, (long) x));
-
- /* x == 0x00 (EOF) causes syntax_error */
- DUK_ASSERT(duk_hex_dectab[0] == -1);
- t = duk_hex_dectab[x & 0xff];
- if (DUK_LIKELY(t >= 0)) {
- res = (res * 16) + t;
- } else {
- /* catches EOF and invalid digits */
- goto syntax_error;
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("final hex decoded value: %ld", (long) res));
- return res;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
- return 0;
-}
-
-DUK_LOCAL void duk__dec_req_stridx(duk_json_dec_ctx *js_ctx, duk_small_uint_t stridx) {
- duk_hstring *h;
- const duk_uint8_t *p;
- duk_uint8_t x, y;
-
- /* First character has already been eaten and checked by the caller.
- * We can scan until a NUL in stridx string because no built-in strings
- * have internal NULs.
- */
-
- DUK_ASSERT_DISABLE(stridx >= 0); /* unsigned */
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- h = DUK_HTHREAD_GET_STRING(js_ctx->thr, stridx);
- DUK_ASSERT(h != NULL);
-
- p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h) + 1;
- DUK_ASSERT(*(js_ctx->p - 1) == *(p - 1)); /* first character has been matched */
-
- for (;;) {
- x = *p;
- if (x == 0) {
- break;
- }
- y = duk__dec_get(js_ctx);
- if (x != y) {
- /* Catches EOF of JSON input. */
- goto syntax_error;
- }
- p++;
- }
-
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-
-DUK_LOCAL duk_small_int_t duk__dec_string_escape(duk_json_dec_ctx *js_ctx, duk_uint8_t **ext_p) {
- duk_uint_fast32_t cp;
-
- /* EOF (-1) will be cast to an unsigned value first
- * and then re-cast for the switch. In any case, it
- * will match the default case (syntax error).
- */
- cp = (duk_uint_fast32_t) duk__dec_get(js_ctx);
- switch ((int) cp) {
- case DUK_ASC_BACKSLASH: break;
- case DUK_ASC_DOUBLEQUOTE: break;
- case DUK_ASC_SLASH: break;
- case DUK_ASC_LC_T: cp = 0x09; break;
- case DUK_ASC_LC_N: cp = 0x0a; break;
- case DUK_ASC_LC_R: cp = 0x0d; break;
- case DUK_ASC_LC_F: cp = 0x0c; break;
- case DUK_ASC_LC_B: cp = 0x08; break;
- case DUK_ASC_LC_U: {
- cp = duk__dec_decode_hex_escape(js_ctx, 4);
- break;
- }
-#ifdef DUK_USE_JX
- case DUK_ASC_UC_U: {
- if (js_ctx->flag_ext_custom) {
- cp = duk__dec_decode_hex_escape(js_ctx, 8);
- } else {
- return 1; /* syntax error */
- }
- break;
- }
- case DUK_ASC_LC_X: {
- if (js_ctx->flag_ext_custom) {
- cp = duk__dec_decode_hex_escape(js_ctx, 2);
- } else {
- return 1; /* syntax error */
- }
- break;
- }
-#endif /* DUK_USE_JX */
- default:
- /* catches EOF (0x00) */
- return 1; /* syntax error */
- }
-
- DUK_RAW_WRITE_XUTF8(*ext_p, cp);
-
- return 0;
-}
-
-DUK_LOCAL void duk__dec_string(duk_json_dec_ctx *js_ctx) {
- duk_hthread *thr = js_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
- duk_uint8_t *q;
-
- /* '"' was eaten by caller */
-
- /* Note that we currently parse -bytes-, not codepoints.
- * All non-ASCII extended UTF-8 will encode to bytes >= 0x80,
- * so they'll simply pass through (valid UTF-8 or not).
- */
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(js_ctx->thr, bw, DUK__JSON_DECSTR_BUFSIZE);
- q = DUK_BW_GET_PTR(js_ctx->thr, bw);
-
-#if defined(DUK_USE_JSON_DECSTRING_FASTPATH)
- for (;;) {
- duk_small_uint_t safe;
- duk_uint8_t b, x;
- const duk_uint8_t *p;
-
- /* Select a safe loop count where no output checks are
- * needed assuming we won't encounter escapes. Input
- * bound checks are not necessary as a NUL (guaranteed)
- * will cause a SyntaxError before we read out of bounds.
- */
-
- safe = DUK__JSON_DECSTR_CHUNKSIZE;
-
- /* Ensure space for 1:1 output plus one escape. */
- q = DUK_BW_ENSURE_RAW(js_ctx->thr, bw, safe + DUK_UNICODE_MAX_XUTF8_LENGTH, q);
-
- p = js_ctx->p; /* temp copy, write back for next loop */
- for (;;) {
- if (safe == 0) {
- js_ctx->p = p;
- break;
- }
- safe--;
-
- /* End of input (NUL) goes through slow path and causes SyntaxError. */
- DUK_ASSERT(duk__json_decstr_lookup[0] == 0x00);
-
- b = *p++;
- x = (duk_small_int_t) duk__json_decstr_lookup[b];
- if (DUK_LIKELY(x != 0)) {
- /* Fast path, decode as is. */
- *q++ = b;
- } else if (b == DUK_ASC_DOUBLEQUOTE) {
- js_ctx->p = p;
- goto found_quote;
- } else if (b == DUK_ASC_BACKSLASH) {
- /* We've ensured space for one escaped input; then
- * bail out and recheck (this makes escape handling
- * quite slow but it's uncommon).
- */
- js_ctx->p = p;
- if (duk__dec_string_escape(js_ctx, &q) != 0) {
- goto syntax_error;
- }
- break;
- } else {
- js_ctx->p = p;
- goto syntax_error;
- }
- }
- }
- found_quote:
-#else /* DUK_USE_JSON_DECSTRING_FASTPATH */
- for (;;) {
- duk_uint8_t x;
-
- q = DUK_BW_ENSURE_RAW(js_ctx->thr, bw, DUK_UNICODE_MAX_XUTF8_LENGTH, q);
-
- x = duk__dec_get(js_ctx);
-
- if (x == DUK_ASC_DOUBLEQUOTE) {
- break;
- } else if (x == DUK_ASC_BACKSLASH) {
- if (duk__dec_string_escape(js_ctx, &q) != 0) {
- goto syntax_error;
- }
- } else if (x < 0x20) {
- /* catches EOF (NUL) */
- goto syntax_error;
- } else {
- *q++ = (duk_uint8_t) x;
- }
- }
-#endif /* DUK_USE_JSON_DECSTRING_FASTPATH */
-
- DUK_BW_SETPTR_AND_COMPACT(js_ctx->thr, bw, q);
- duk_to_string(ctx, -1);
-
- /* [ ... str ] */
-
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-
-#ifdef DUK_USE_JX
-/* Decode a plain string consisting entirely of identifier characters.
- * Used to parse plain keys (e.g. "foo: 123").
- */
-DUK_LOCAL void duk__dec_plain_string(duk_json_dec_ctx *js_ctx) {
- duk_hthread *thr = js_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- const duk_uint8_t *p;
- duk_small_int_t x;
-
- /* Caller has already eaten the first char so backtrack one byte. */
-
- js_ctx->p--; /* safe */
- p = js_ctx->p;
-
- /* Here again we parse bytes, and non-ASCII UTF-8 will cause end of
- * parsing (which is correct except if there are non-shortest encodings).
- * There is also no need to check explicitly for end of input buffer as
- * the input is NUL padded and NUL will exit the parsing loop.
- *
- * Because no unescaping takes place, we can just scan to the end of the
- * plain string and intern from the input buffer.
- */
-
- for (;;) {
- x = *p;
-
- /* There is no need to check the first character specially here
- * (i.e. reject digits): the caller only accepts valid initial
- * characters and won't call us if the first character is a digit.
- * This also ensures that the plain string won't be empty.
- */
-
- if (!duk_unicode_is_identifier_part((duk_codepoint_t) x)) {
- break;
- }
- p++;
- }
-
- duk_push_lstring(ctx, (const char *) js_ctx->p, (duk_size_t) (p - js_ctx->p));
- js_ctx->p = p;
-
- /* [ ... str ] */
-}
-#endif /* DUK_USE_JX */
-
-#ifdef DUK_USE_JX
-DUK_LOCAL void duk__dec_pointer(duk_json_dec_ctx *js_ctx) {
- duk_hthread *thr = js_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- const duk_uint8_t *p;
- duk_small_int_t x;
- void *voidptr;
-
- /* Caller has already eaten the first character ('(') which we don't need. */
-
- p = js_ctx->p;
-
- for (;;) {
- x = *p;
-
- /* Assume that the native representation never contains a closing
- * parenthesis.
- */
-
- if (x == DUK_ASC_RPAREN) {
- break;
- } else if (x <= 0) {
- /* NUL term or -1 (EOF), NUL check would suffice */
- goto syntax_error;
- }
- p++;
- }
-
- /* There is no need to NUL delimit the sscanf() call: trailing garbage is
- * ignored and there is always a NUL terminator which will force an error
- * if no error is encountered before it. It's possible that the scan
- * would scan further than between [js_ctx->p,p[ though and we'd advance
- * by less than the scanned value.
- *
- * Because pointers are platform specific, a failure to scan a pointer
- * results in a null pointer which is a better placeholder than a missing
- * value or an error.
- */
-
- voidptr = NULL;
- (void) DUK_SSCANF((const char *) js_ctx->p, DUK_STR_FMT_PTR, &voidptr);
- duk_push_pointer(ctx, voidptr);
- js_ctx->p = p + 1; /* skip ')' */
-
- /* [ ... ptr ] */
-
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-#endif /* DUK_USE_JX */
-
-#ifdef DUK_USE_JX
-DUK_LOCAL void duk__dec_buffer(duk_json_dec_ctx *js_ctx) {
- duk_hthread *thr = js_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- const duk_uint8_t *p;
- duk_uint8_t *buf;
- duk_size_t src_len;
- duk_small_int_t x;
-
- /* Caller has already eaten the first character ('|') which we don't need. */
-
- p = js_ctx->p;
-
- /* XXX: Would be nice to share the fast path loop from duk_hex_decode()
- * and avoid creating a temporary buffer. However, there are some
- * differences which prevent trivial sharing:
- *
- * - Pipe char detection
- * - EOF detection
- * - Unknown length of input and output
- *
- * The best approach here would be a bufwriter and a reasonaly sized
- * safe inner loop (e.g. 64 output bytes at a time).
- */
-
- for (;;) {
- x = *p;
-
- /* This loop intentionally does not ensure characters are valid
- * ([0-9a-fA-F]) because the hex decode call below will do that.
- */
- if (x == DUK_ASC_PIPE) {
- break;
- } else if (x <= 0) {
- /* NUL term or -1 (EOF), NUL check would suffice */
- goto syntax_error;
- }
- p++;
- }
-
- src_len = (duk_size_t) (p - js_ctx->p);
- buf = (duk_uint8_t *) duk_push_fixed_buffer(ctx, src_len);
- DUK_ASSERT(buf != NULL);
- DUK_MEMCPY((void *) buf, (const void *) js_ctx->p, src_len);
- duk_hex_decode(ctx, -1);
-
- js_ctx->p = p + 1; /* skip '|' */
-
- /* [ ... buf ] */
-
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-#endif /* DUK_USE_JX */
-
-/* Parse a number, other than NaN or +/- Infinity */
-DUK_LOCAL void duk__dec_number(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- const duk_uint8_t *p_start;
- const duk_uint8_t *p;
- duk_uint8_t x;
- duk_small_uint_t s2n_flags;
-
- DUK_DDD(DUK_DDDPRINT("parse_number"));
-
- p_start = js_ctx->p;
-
- /* First pass parse is very lenient (e.g. allows '1.2.3') and extracts a
- * string for strict number parsing.
- */
-
- p = js_ctx->p;
- for (;;) {
- x = *p;
-
- DUK_DDD(DUK_DDDPRINT("parse_number: p_start=%p, p=%p, p_end=%p, x=%ld",
- (const void *) p_start, (const void *) p,
- (const void *) js_ctx->p_end, (long) x));
-
-#if defined(DUK_USE_JSON_DECNUMBER_FASTPATH)
- /* This fast path is pretty marginal in practice.
- * XXX: candidate for removal.
- */
- DUK_ASSERT(duk__json_decnumber_lookup[0x00] == 0x00); /* end-of-input breaks */
- if (duk__json_decnumber_lookup[x] == 0) {
- break;
- }
-#else /* DUK_USE_JSON_DECNUMBER_FASTPATH */
- if (!((x >= DUK_ASC_0 && x <= DUK_ASC_9) ||
- (x == DUK_ASC_PERIOD || x == DUK_ASC_LC_E ||
- x == DUK_ASC_UC_E || x == DUK_ASC_MINUS || x == DUK_ASC_PLUS))) {
- /* Plus sign must be accepted for positive exponents
- * (e.g. '1.5e+2'). This clause catches NULs.
- */
- break;
- }
-#endif /* DUK_USE_JSON_DECNUMBER_FASTPATH */
- p++; /* safe, because matched (NUL causes a break) */
- }
- js_ctx->p = p;
-
- DUK_ASSERT(js_ctx->p > p_start);
- duk_push_lstring(ctx, (const char *) p_start, (duk_size_t) (p - p_start));
-
- s2n_flags = DUK_S2N_FLAG_ALLOW_EXP |
- DUK_S2N_FLAG_ALLOW_MINUS | /* but don't allow leading plus */
- DUK_S2N_FLAG_ALLOW_FRAC;
-
- DUK_DDD(DUK_DDDPRINT("parse_number: string before parsing: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_numconv_parse(ctx, 10 /*radix*/, s2n_flags);
- if (duk_is_nan(ctx, -1)) {
- duk__dec_syntax_error(js_ctx);
- }
- DUK_ASSERT(duk_is_number(ctx, -1));
- DUK_DDD(DUK_DDDPRINT("parse_number: final number: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [ ... num ] */
-}
-
-DUK_LOCAL void duk__dec_objarr_entry(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_require_stack(ctx, DUK_JSON_DEC_REQSTACK);
-
- /* c recursion check */
-
- DUK_ASSERT(js_ctx->recursion_depth >= 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- if (js_ctx->recursion_depth >= js_ctx->recursion_limit) {
- DUK_ERROR_RANGE((duk_hthread *) ctx, DUK_STR_JSONDEC_RECLIMIT);
- }
- js_ctx->recursion_depth++;
-}
-
-DUK_LOCAL void duk__dec_objarr_exit(duk_json_dec_ctx *js_ctx) {
- /* c recursion check */
-
- DUK_ASSERT(js_ctx->recursion_depth > 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- js_ctx->recursion_depth--;
-}
-
-DUK_LOCAL void duk__dec_object(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_int_t key_count; /* XXX: a "first" flag would suffice */
- duk_uint8_t x;
-
- DUK_DDD(DUK_DDDPRINT("parse_object"));
-
- duk__dec_objarr_entry(js_ctx);
-
- duk_push_object(ctx);
-
- /* Initial '{' has been checked and eaten by caller. */
-
- key_count = 0;
- for (;;) {
- x = duk__dec_get_nonwhite(js_ctx);
-
- DUK_DDD(DUK_DDDPRINT("parse_object: obj=%!T, x=%ld, key_count=%ld",
- (duk_tval *) duk_get_tval(ctx, -1),
- (long) x, (long) key_count));
-
- /* handle comma and closing brace */
-
- if (x == DUK_ASC_COMMA && key_count > 0) {
- /* accept comma, expect new value */
- x = duk__dec_get_nonwhite(js_ctx);
- } else if (x == DUK_ASC_RCURLY) {
- /* eat closing brace */
- break;
- } else if (key_count == 0) {
- /* accept anything, expect first value (EOF will be
- * caught by key parsing below.
- */
- ;
- } else {
- /* catches EOF (NUL) and initial comma */
- goto syntax_error;
- }
-
- /* parse key and value */
-
- if (x == DUK_ASC_DOUBLEQUOTE) {
- duk__dec_string(js_ctx);
-#ifdef DUK_USE_JX
- } else if (js_ctx->flag_ext_custom &&
- duk_unicode_is_identifier_start((duk_codepoint_t) x)) {
- duk__dec_plain_string(js_ctx);
-#endif
- } else {
- goto syntax_error;
- }
-
- /* [ ... obj key ] */
-
- x = duk__dec_get_nonwhite(js_ctx);
- if (x != DUK_ASC_COLON) {
- goto syntax_error;
- }
-
- duk__dec_value(js_ctx);
-
- /* [ ... obj key val ] */
-
- duk_xdef_prop_wec(ctx, -3);
-
- /* [ ... obj ] */
-
- key_count++;
- }
-
- /* [ ... obj ] */
-
- DUK_DDD(DUK_DDDPRINT("parse_object: final object is %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk__dec_objarr_exit(js_ctx);
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-
-DUK_LOCAL void duk__dec_array(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_uarridx_t arr_idx;
- duk_uint8_t x;
-
- DUK_DDD(DUK_DDDPRINT("parse_array"));
-
- duk__dec_objarr_entry(js_ctx);
-
- duk_push_array(ctx);
-
- /* Initial '[' has been checked and eaten by caller. */
-
- arr_idx = 0;
- for (;;) {
- x = duk__dec_get_nonwhite(js_ctx);
-
- DUK_DDD(DUK_DDDPRINT("parse_array: arr=%!T, x=%ld, arr_idx=%ld",
- (duk_tval *) duk_get_tval(ctx, -1),
- (long) x, (long) arr_idx));
-
- /* handle comma and closing bracket */
-
- if ((x == DUK_ASC_COMMA) && (arr_idx != 0)) {
- /* accept comma, expect new value */
- ;
- } else if (x == DUK_ASC_RBRACKET) {
- /* eat closing bracket */
- break;
- } else if (arr_idx == 0) {
- /* accept anything, expect first value (EOF will be
- * caught by duk__dec_value() below.
- */
- js_ctx->p--; /* backtrack (safe) */
- } else {
- /* catches EOF (NUL) and initial comma */
- goto syntax_error;
- }
-
- /* parse value */
-
- duk__dec_value(js_ctx);
-
- /* [ ... arr val ] */
-
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
- }
-
- /* Must set 'length' explicitly when using duk_xdef_prop_xxx() to
- * set the values.
- */
-
- duk_set_length(ctx, -1, arr_idx);
-
- /* [ ... arr ] */
-
- DUK_DDD(DUK_DDDPRINT("parse_array: final array is %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk__dec_objarr_exit(js_ctx);
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-
-DUK_LOCAL void duk__dec_value(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_uint8_t x;
-
- x = duk__dec_get_nonwhite(js_ctx);
-
- DUK_DDD(DUK_DDDPRINT("parse_value: initial x=%ld", (long) x));
-
- /* Note: duk__dec_req_stridx() backtracks one char */
-
- if (x == DUK_ASC_DOUBLEQUOTE) {
- duk__dec_string(js_ctx);
- } else if ((x >= DUK_ASC_0 && x <= DUK_ASC_9) || (x == DUK_ASC_MINUS)) {
-#ifdef DUK_USE_JX
- if (js_ctx->flag_ext_custom && x == DUK_ASC_MINUS && duk__dec_peek(js_ctx) == DUK_ASC_UC_I) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_MINUS_INFINITY); /* "-Infinity", '-' has been eaten */
- duk_push_number(ctx, -DUK_DOUBLE_INFINITY);
- } else {
-#else
- { /* unconditional block */
-#endif
- /* We already ate 'x', so backup one byte. */
- js_ctx->p--; /* safe */
- duk__dec_number(js_ctx);
- }
- } else if (x == DUK_ASC_LC_T) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_TRUE);
- duk_push_true(ctx);
- } else if (x == DUK_ASC_LC_F) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_FALSE);
- duk_push_false(ctx);
- } else if (x == DUK_ASC_LC_N) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_LC_NULL);
- duk_push_null(ctx);
-#ifdef DUK_USE_JX
- } else if (js_ctx->flag_ext_custom && x == DUK_ASC_LC_U) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_LC_UNDEFINED);
- duk_push_undefined(ctx);
- } else if (js_ctx->flag_ext_custom && x == DUK_ASC_UC_N) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_NAN);
- duk_push_nan(ctx);
- } else if (js_ctx->flag_ext_custom && x == DUK_ASC_UC_I) {
- duk__dec_req_stridx(js_ctx, DUK_STRIDX_INFINITY);
- duk_push_number(ctx, DUK_DOUBLE_INFINITY);
- } else if (js_ctx->flag_ext_custom && x == DUK_ASC_LPAREN) {
- duk__dec_pointer(js_ctx);
- } else if (js_ctx->flag_ext_custom && x == DUK_ASC_PIPE) {
- duk__dec_buffer(js_ctx);
-#endif
- } else if (x == DUK_ASC_LCURLY) {
- duk__dec_object(js_ctx);
- } else if (x == DUK_ASC_LBRACKET) {
- duk__dec_array(js_ctx);
- } else {
- /* catches EOF (NUL) */
- goto syntax_error;
- }
-
- duk__dec_eat_white(js_ctx);
-
- /* [ ... val ] */
- return;
-
- syntax_error:
- duk__dec_syntax_error(js_ctx);
- DUK_UNREACHABLE();
-}
-
-/* Recursive value reviver, implements the Walk() algorithm. No C recursion
- * check is done here because the initial parsing step will already ensure
- * there is a reasonable limit on C recursion depth and hence object depth.
- */
-DUK_LOCAL void duk__dec_reviver_walk(duk_json_dec_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_hobject *h;
- duk_uarridx_t i, arr_len;
-
- DUK_DDD(DUK_DDDPRINT("walk: top=%ld, holder=%!T, name=%!T",
- (long) duk_get_top(ctx),
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk_dup_top(ctx);
- duk_get_prop(ctx, -3); /* -> [ ... holder name val ] */
-
- h = duk_get_hobject(ctx, -1);
- if (h != NULL) {
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAY) {
- arr_len = (duk_uarridx_t) duk_get_length(ctx, -1);
- for (i = 0; i < arr_len; i++) {
- /* [ ... holder name val ] */
-
- DUK_DDD(DUK_DDDPRINT("walk: array, top=%ld, i=%ld, arr_len=%ld, holder=%!T, name=%!T, val=%!T",
- (long) duk_get_top(ctx), (long) i, (long) arr_len,
- (duk_tval *) duk_get_tval(ctx, -3), (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* XXX: push_uint_string / push_u32_string */
- duk_dup_top(ctx);
- duk_push_uint(ctx, (duk_uint_t) i);
- duk_to_string(ctx, -1); /* -> [ ... holder name val val ToString(i) ] */
- duk__dec_reviver_walk(js_ctx); /* -> [ ... holder name val new_elem ] */
-
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_del_prop_index(ctx, -1, i);
- } else {
- /* XXX: duk_xdef_prop_index_wec() would be more appropriate
- * here but it currently makes some assumptions that might
- * not hold (e.g. that previous property is not an accessor).
- */
- duk_put_prop_index(ctx, -2, i);
- }
- }
- } else {
- /* [ ... holder name val ] */
- duk_enum(ctx, -1, DUK_ENUM_OWN_PROPERTIES_ONLY /*flags*/);
- while (duk_next(ctx, -1 /*enum_index*/, 0 /*get_value*/)) {
- DUK_DDD(DUK_DDDPRINT("walk: object, top=%ld, holder=%!T, name=%!T, val=%!T, enum=%!iT, obj_key=%!T",
- (long) duk_get_top(ctx), (duk_tval *) duk_get_tval(ctx, -5),
- (duk_tval *) duk_get_tval(ctx, -4), (duk_tval *) duk_get_tval(ctx, -3),
- (duk_tval *) duk_get_tval(ctx, -2), (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [ ... holder name val enum obj_key ] */
- duk_dup(ctx, -3);
- duk_dup(ctx, -2);
-
- /* [ ... holder name val enum obj_key val obj_key ] */
- duk__dec_reviver_walk(js_ctx);
-
- /* [ ... holder name val enum obj_key new_elem ] */
- if (duk_is_undefined(ctx, -1)) {
- duk_pop(ctx);
- duk_del_prop(ctx, -3);
- } else {
- /* XXX: duk_xdef_prop_index_wec() would be more appropriate
- * here but it currently makes some assumptions that might
- * not hold (e.g. that previous property is not an accessor).
- *
- * Using duk_put_prop() works incorrectly with '__proto__'
- * if the own property with that name has been deleted. This
- * does not happen normally, but a clever reviver can trigger
- * that, see complex reviver case in: test-bug-json-parse-__proto__.js.
- */
- duk_put_prop(ctx, -4);
- }
- }
- duk_pop(ctx); /* pop enum */
- }
- }
-
- /* [ ... holder name val ] */
-
- duk_dup(ctx, js_ctx->idx_reviver);
- duk_insert(ctx, -4); /* -> [ ... reviver holder name val ] */
- duk_call_method(ctx, 2); /* -> [ ... res ] */
-
- DUK_DDD(DUK_DDDPRINT("walk: top=%ld, result=%!T",
- (long) duk_get_top(ctx), (duk_tval *) duk_get_tval(ctx, -1)));
-}
-
-/*
- * Stringify implementation.
- */
-
-#define DUK__EMIT_1(js_ctx,ch) duk__emit_1((js_ctx), (duk_uint_fast8_t) (ch))
-#define DUK__EMIT_2(js_ctx,ch1,ch2) duk__emit_2((js_ctx), (duk_uint_fast8_t) (ch1), (duk_uint_fast8_t) (ch2))
-#define DUK__EMIT_HSTR(js_ctx,h) duk__emit_hstring((js_ctx), (h))
-#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC)
-#define DUK__EMIT_CSTR(js_ctx,p) duk__emit_cstring((js_ctx), (p))
-#endif
-#define DUK__EMIT_STRIDX(js_ctx,i) duk__emit_stridx((js_ctx), (i))
-#define DUK__UNEMIT_1(js_ctx) duk__unemit_1((js_ctx))
-
-DUK_LOCAL void duk__emit_1(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch) {
- DUK_BW_WRITE_ENSURE_U8(js_ctx->thr, &js_ctx->bw, ch);
-}
-
-DUK_LOCAL void duk__emit_2(duk_json_enc_ctx *js_ctx, duk_uint_fast8_t ch1, duk_uint_fast8_t ch2) {
- DUK_BW_WRITE_ENSURE_U8_2(js_ctx->thr, &js_ctx->bw, ch1, ch2);
-}
-
-DUK_LOCAL void duk__emit_hstring(duk_json_enc_ctx *js_ctx, duk_hstring *h) {
- DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h);
-}
-
-#if defined(DUK_USE_FASTINT) || defined(DUK_USE_JX) || defined(DUK_USE_JC)
-DUK_LOCAL void duk__emit_cstring(duk_json_enc_ctx *js_ctx, const char *str) {
- DUK_BW_WRITE_ENSURE_CSTRING(js_ctx->thr, &js_ctx->bw, str);
-}
-#endif
-
-DUK_LOCAL void duk__emit_stridx(duk_json_enc_ctx *js_ctx, duk_small_uint_t stridx) {
- duk_hstring *h;
-
- DUK_ASSERT_DISABLE(stridx >= 0); /* unsigned */
- DUK_ASSERT(stridx < DUK_HEAP_NUM_STRINGS);
- h = DUK_HTHREAD_GET_STRING(js_ctx->thr, stridx);
- DUK_ASSERT(h != NULL);
-
- DUK_BW_WRITE_ENSURE_HSTRING(js_ctx->thr, &js_ctx->bw, h);
-}
-
-DUK_LOCAL void duk__unemit_1(duk_json_enc_ctx *js_ctx) {
- DUK_ASSERT(DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw) >= 1);
- DUK_BW_ADD_PTR(js_ctx->thr, &js_ctx->bw, -1);
-}
-
-#define DUK__MKESC(nybbles,esc1,esc2) \
- (((duk_uint_fast32_t) (nybbles)) << 16) | \
- (((duk_uint_fast32_t) (esc1)) << 8) | \
- ((duk_uint_fast32_t) (esc2))
-
-DUK_LOCAL duk_uint8_t *duk__emit_esc_auto_fast(duk_json_enc_ctx *js_ctx, duk_uint_fast32_t cp, duk_uint8_t *q) {
- duk_uint_fast32_t tmp;
- duk_small_uint_t dig;
-
- DUK_UNREF(js_ctx);
-
- /* Caller ensures space for at least DUK__JSON_MAX_ESC_LEN. */
-
- /* Select appropriate escape format automatically, and set 'tmp' to a
- * value encoding both the escape format character and the nybble count:
- *
- * (nybble_count << 16) | (escape_char1) | (escape_char2)
- */
-
-#ifdef DUK_USE_JX
- if (DUK_LIKELY(cp < 0x100UL)) {
- if (DUK_UNLIKELY(js_ctx->flag_ext_custom)) {
- tmp = DUK__MKESC(2, DUK_ASC_BACKSLASH, DUK_ASC_LC_X);
- } else {
- tmp = DUK__MKESC(4, DUK_ASC_BACKSLASH, DUK_ASC_LC_U);
- }
- } else
-#endif
- if (DUK_LIKELY(cp < 0x10000UL)) {
- tmp = DUK__MKESC(4, DUK_ASC_BACKSLASH, DUK_ASC_LC_U);
- } else {
-#ifdef DUK_USE_JX
- if (DUK_LIKELY(js_ctx->flag_ext_custom)) {
- tmp = DUK__MKESC(8, DUK_ASC_BACKSLASH, DUK_ASC_UC_U);
- } else
-#endif
- {
- /* In compatible mode and standard JSON mode, output
- * something useful for non-BMP characters. This won't
- * roundtrip but will still be more or less readable and
- * more useful than an error.
- */
- tmp = DUK__MKESC(8, DUK_ASC_UC_U, DUK_ASC_PLUS);
- }
- }
-
- *q++ = (duk_uint8_t) ((tmp >> 8) & 0xff);
- *q++ = (duk_uint8_t) (tmp & 0xff);
-
- tmp = tmp >> 16;
- while (tmp > 0) {
- tmp--;
- dig = (duk_small_uint_t) ((cp >> (4 * tmp)) & 0x0f);
- *q++ = duk_lc_digits[dig];
- }
-
- return q;
-}
-
-DUK_LOCAL void duk__enc_key_autoquote(duk_json_enc_ctx *js_ctx, duk_hstring *k) {
- const duk_int8_t *p, *p_start, *p_end; /* Note: intentionally signed. */
- duk_size_t k_len;
- duk_codepoint_t cp;
-
- DUK_ASSERT(k != NULL);
-
- /* Accept ASCII strings which conform to identifier requirements
- * as being emitted without key quotes. Since we only accept ASCII
- * there's no need for actual decoding: 'p' is intentionally signed
- * so that bytes >= 0x80 extend to negative values and are rejected
- * as invalid identifier codepoints.
- */
-
- if (js_ctx->flag_avoid_key_quotes) {
- k_len = DUK_HSTRING_GET_BYTELEN(k);
- p_start = (const duk_int8_t *) DUK_HSTRING_GET_DATA(k);
- p_end = p_start + k_len;
- p = p_start;
-
- if (p == p_end) {
- /* Zero length string is not accepted without quotes */
- goto quote_normally;
- }
- cp = (duk_codepoint_t) (*p++);
- if (DUK_UNLIKELY(!duk_unicode_is_identifier_start(cp))) {
- goto quote_normally;
- }
- while (p < p_end) {
- cp = (duk_codepoint_t) (*p++);
- if (DUK_UNLIKELY(!duk_unicode_is_identifier_part(cp))) {
- goto quote_normally;
- }
- }
-
- /* This seems faster than emitting bytes one at a time and
- * then potentially rewinding.
- */
- DUK__EMIT_HSTR(js_ctx, k);
- return;
- }
-
- quote_normally:
- duk__enc_quote_string(js_ctx, k);
-}
-
-/* The Quote(value) operation: quote a string.
- *
- * Stack policy: [ ] -> [ ].
- */
-
-DUK_LOCAL void duk__enc_quote_string(duk_json_enc_ctx *js_ctx, duk_hstring *h_str) {
- duk_hthread *thr = js_ctx->thr;
- const duk_uint8_t *p, *p_start, *p_end, *p_now, *p_tmp;
- duk_uint8_t *q;
- duk_ucodepoint_t cp; /* typed for duk_unicode_decode_xutf8() */
-
- DUK_DDD(DUK_DDDPRINT("duk__enc_quote_string: h_str=%!O", (duk_heaphdr *) h_str));
-
- DUK_ASSERT(h_str != NULL);
- p_start = DUK_HSTRING_GET_DATA(h_str);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_str);
- p = p_start;
-
- DUK__EMIT_1(js_ctx, DUK_ASC_DOUBLEQUOTE);
-
- /* Encode string in small chunks, estimating the maximum expansion so that
- * there's no need to ensure space while processing the chunk.
- */
-
- while (p < p_end) {
- duk_size_t left, now, space;
-
- left = (duk_size_t) (p_end - p);
- now = (left > DUK__JSON_ENCSTR_CHUNKSIZE ?
- DUK__JSON_ENCSTR_CHUNKSIZE : left);
-
- /* Maximum expansion per input byte is 6:
- * - invalid UTF-8 byte causes "\uXXXX" to be emitted (6/1 = 6).
- * - 2-byte UTF-8 encodes as "\uXXXX" (6/2 = 3).
- * - 4-byte UTF-8 encodes as "\Uxxxxxxxx" (10/4 = 2.5).
- */
- space = now * 6;
- q = DUK_BW_ENSURE_GETPTR(thr, &js_ctx->bw, space);
-
- p_now = p + now;
-
- while (p < p_now) {
-#if defined(DUK_USE_JSON_QUOTESTRING_FASTPATH)
- duk_uint8_t b;
-
- b = duk__json_quotestr_lookup[*p++];
- if (DUK_LIKELY(b < 0x80)) {
- /* Most input bytes go through here. */
- *q++ = b;
- } else if (b >= 0xa0) {
- *q++ = DUK_ASC_BACKSLASH;
- *q++ = (duk_uint8_t) (b - 0x80);
- } else if (b == 0x80) {
- cp = (duk_ucodepoint_t) (*(p - 1));
- q = duk__emit_esc_auto_fast(js_ctx, cp, q);
- } else if (b == 0x7f && js_ctx->flag_ascii_only) {
- /* 0x7F is special */
- DUK_ASSERT(b == 0x81);
- cp = (duk_ucodepoint_t) 0x7f;
- q = duk__emit_esc_auto_fast(js_ctx, cp, q);
- } else {
- DUK_ASSERT(b == 0x81);
- p--;
-
- /* slow path is shared */
-#else /* DUK_USE_JSON_QUOTESTRING_FASTPATH */
- cp = *p;
-
- if (DUK_LIKELY(cp <= 0x7f)) {
- /* ascii fast path: avoid decoding utf-8 */
- p++;
- if (cp == 0x22 || cp == 0x5c) {
- /* double quote or backslash */
- *q++ = DUK_ASC_BACKSLASH;
- *q++ = (duk_uint8_t) cp;
- } else if (cp < 0x20) {
- duk_uint_fast8_t esc_char;
-
- /* This approach is a bit shorter than a straight
- * if-else-ladder and also a bit faster.
- */
- if (cp < (sizeof(duk__json_quotestr_esc) / sizeof(duk_uint8_t)) &&
- (esc_char = duk__json_quotestr_esc[cp]) != 0) {
- *q++ = DUK_ASC_BACKSLASH;
- *q++ = (duk_uint8_t) esc_char;
- } else {
- q = duk__emit_esc_auto_fast(js_ctx, cp, q);
- }
- } else if (cp == 0x7f && js_ctx->flag_ascii_only) {
- q = duk__emit_esc_auto_fast(js_ctx, cp, q);
- } else {
- /* any other printable -> as is */
- *q++ = (duk_uint8_t) cp;
- }
- } else {
- /* slow path is shared */
-#endif /* DUK_USE_JSON_QUOTESTRING_FASTPATH */
-
- /* slow path decode */
-
- /* If XUTF-8 decoding fails, treat the offending byte as a codepoint directly
- * and go forward one byte. This is of course very lossy, but allows some kind
- * of output to be produced even for internal strings which don't conform to
- * XUTF-8. All standard Ecmascript strings are always CESU-8, so this behavior
- * does not violate the Ecmascript specification. The behavior is applied to
- * all modes, including Ecmascript standard JSON. Because the current XUTF-8
- * decoding is not very strict, this behavior only really affects initial bytes
- * and truncated codepoints.
- *
- * Another alternative would be to scan forwards to start of next codepoint
- * (or end of input) and emit just one replacement codepoint.
- */
-
- p_tmp = p;
- if (!duk_unicode_decode_xutf8(thr, &p, p_start, p_end, &cp)) {
- /* Decode failed. */
- cp = *p_tmp;
- p = p_tmp + 1;
- }
-
-#ifdef DUK_USE_NONSTD_JSON_ESC_U2028_U2029
- if (js_ctx->flag_ascii_only || cp == 0x2028 || cp == 0x2029) {
-#else
- if (js_ctx->flag_ascii_only) {
-#endif
- q = duk__emit_esc_auto_fast(js_ctx, cp, q);
- } else {
- /* as is */
- DUK_RAW_WRITE_XUTF8(q, cp);
- }
- }
- }
-
- DUK_BW_SET_PTR(thr, &js_ctx->bw, q);
- }
-
- DUK__EMIT_1(js_ctx, DUK_ASC_DOUBLEQUOTE);
-}
-
-/* Encode a double (checked by caller) from stack top. Stack top may be
- * replaced by serialized string but is not popped (caller does that).
- */
-DUK_LOCAL void duk__enc_double(duk_json_enc_ctx *js_ctx) {
- duk_hthread *thr;
- duk_context *ctx;
- duk_tval *tv;
- duk_double_t d;
- duk_small_int_t c;
- duk_small_int_t s;
- duk_small_uint_t stridx;
- duk_small_uint_t n2s_flags;
- duk_hstring *h_str;
-
- DUK_ASSERT(js_ctx != NULL);
- thr = js_ctx->thr;
- DUK_ASSERT(thr != NULL);
- ctx = (duk_context *) thr;
-
- /* Caller must ensure 'tv' is indeed a double and not a fastint! */
- tv = DUK_GET_TVAL_NEGIDX(ctx, -1);
- DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
- d = DUK_TVAL_GET_DOUBLE(tv);
-
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- s = (duk_small_int_t) DUK_SIGNBIT(d);
- DUK_UNREF(s);
-
- if (DUK_LIKELY(!(c == DUK_FP_INFINITE || c == DUK_FP_NAN))) {
- DUK_ASSERT(DUK_ISFINITE(d));
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- /* Negative zero needs special handling in JX/JC because
- * it would otherwise serialize to '0', not '-0'.
- */
- if (DUK_UNLIKELY(c == DUK_FP_ZERO && s != 0 &&
- (js_ctx->flag_ext_custom_or_compatible))) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_MINUS_ZERO); /* '-0' */
- } else
-#endif /* DUK_USE_JX || DUK_USE_JC */
- {
- n2s_flags = 0;
- /* [ ... number ] -> [ ... string ] */
- duk_numconv_stringify(ctx, 10 /*radix*/, 0 /*digits*/, n2s_flags);
- }
- h_str = duk_to_hstring(ctx, -1);
- DUK_ASSERT(h_str != NULL);
- DUK__EMIT_HSTR(js_ctx, h_str);
- return;
- }
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (!(js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM |
- DUK_JSON_FLAG_EXT_COMPATIBLE))) {
- stridx = DUK_STRIDX_LC_NULL;
- } else if (c == DUK_FP_NAN) {
- stridx = js_ctx->stridx_custom_nan;
- } else if (s == 0) {
- stridx = js_ctx->stridx_custom_posinf;
- } else {
- stridx = js_ctx->stridx_custom_neginf;
- }
-#else
- stridx = DUK_STRIDX_LC_NULL;
-#endif
- DUK__EMIT_STRIDX(js_ctx, stridx);
-}
-
-#if defined(DUK_USE_FASTINT)
-/* Encode a fastint from duk_tval ptr, no value stack effects. */
-DUK_LOCAL void duk__enc_fastint_tval(duk_json_enc_ctx *js_ctx, duk_tval *tv) {
- duk_int64_t v;
-
- /* Fastint range is signed 48-bit so longest value is -2^47 = -140737488355328
- * (16 chars long), longest signed 64-bit value is -2^63 = -9223372036854775808
- * (20 chars long). Alloc space for 64-bit range to be safe.
- */
- duk_uint8_t buf[20 + 1];
-
- /* Caller must ensure 'tv' is indeed a fastint! */
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv));
- v = DUK_TVAL_GET_FASTINT(tv);
-
- /* XXX: There are no format strings in duk_config.h yet, could add
- * one for formatting duk_int64_t. For now, assumes "%lld" and that
- * "long long" type exists. Could also rely on C99 directly but that
- * won't work for older MSVC.
- */
- DUK_SPRINTF((char *) buf, "%lld", (long long) v);
- DUK__EMIT_CSTR(js_ctx, (const char *) buf);
-}
-#endif
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
-#if defined(DUK_USE_HEX_FASTPATH)
-DUK_LOCAL duk_uint8_t *duk__enc_buffer_data_hex(const duk_uint8_t *src, duk_size_t src_len, duk_uint8_t *dst) {
- duk_uint8_t *q;
- duk_uint16_t *q16;
- duk_small_uint_t x;
- duk_size_t i, len_safe;
-#if !defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE)
- duk_bool_t shift_dst;
-#endif
-
- /* Unlike in duk_hex_encode() 'dst' is not necessarily aligned by 2.
- * For platforms where unaligned accesses are not allowed, shift 'dst'
- * ahead by 1 byte to get alignment and then DUK_MEMMOVE() the result
- * in place. The faster encoding loop makes up the difference.
- * There's always space for one extra byte because a terminator always
- * follows the hex data and that's been accounted for by the caller.
- */
-
-#if defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE)
- q16 = (duk_uint16_t *) (void *) dst;
-#else
- shift_dst = (duk_bool_t) (((duk_size_t) dst) & 0x01U);
- if (shift_dst) {
- DUK_DD(DUK_DDPRINT("unaligned accesses not possible, dst not aligned -> step to dst + 1"));
- q16 = (duk_uint16_t *) (void *) (dst + 1);
- } else {
- DUK_DD(DUK_DDPRINT("unaligned accesses not possible, dst is aligned"));
- q16 = (duk_uint16_t *) (void *) dst;
- }
- DUK_ASSERT((((duk_size_t) q16) & 0x01U) == 0);
-#endif
-
- len_safe = src_len & ~0x03U;
- for (i = 0; i < len_safe; i += 4) {
- q16[0] = duk_hex_enctab[src[i]];
- q16[1] = duk_hex_enctab[src[i + 1]];
- q16[2] = duk_hex_enctab[src[i + 2]];
- q16[3] = duk_hex_enctab[src[i + 3]];
- q16 += 4;
- }
- q = (duk_uint8_t *) q16;
-
-#if !defined(DUK_USE_UNALIGNED_ACCESSES_POSSIBLE)
- if (shift_dst) {
- q--;
- DUK_MEMMOVE((void *) dst, (const void *) (dst + 1), 2 * len_safe);
- DUK_ASSERT(dst + 2 * len_safe == q);
- }
-#endif
-
- for (; i < src_len; i++) {
- x = src[i];
- *q++ = duk_lc_digits[x >> 4];
- *q++ = duk_lc_digits[x & 0x0f];
- }
-
- return q;
-}
-#else /* DUK_USE_HEX_FASTPATH */
-DUK_LOCAL duk_uint8_t *duk__enc_buffer_data_hex(const duk_uint8_t *src, duk_size_t src_len, duk_uint8_t *dst) {
- const duk_uint8_t *p;
- const duk_uint8_t *p_end;
- duk_uint8_t *q;
- duk_small_uint_t x;
-
- p = src;
- p_end = src + src_len;
- q = dst;
- while (p != p_end) {
- x = *p++;
- *q++ = duk_lc_digits[x >> 4];
- *q++ = duk_lc_digits[x & 0x0f];
- }
-
- return q;
-}
-#endif /* DUK_USE_HEX_FASTPATH */
-
-DUK_LOCAL void duk__enc_buffer_data(duk_json_enc_ctx *js_ctx, duk_uint8_t *buf_data, duk_size_t buf_len) {
- duk_hthread *thr;
- duk_uint8_t *q;
- duk_size_t space;
-
- thr = js_ctx->thr;
-
- DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); /* caller checks */
- DUK_ASSERT(js_ctx->flag_ext_custom_or_compatible);
-
- /* Buffer values are encoded in (lowercase) hex to make the
- * binary data readable. Base64 or similar would be more
- * compact but less readable, and the point of JX/JC
- * variants is to be as useful to a programmer as possible.
- */
-
- /* The #ifdef clutter here needs to handle the three cases:
- * (1) JX+JC, (2) JX only, (3) JC only.
- */
-
- /* Note: space must cater for both JX and JC. */
- space = 9 + buf_len * 2 + 2;
- DUK_ASSERT(DUK_HBUFFER_MAX_BYTELEN <= 0x7ffffffeUL);
- DUK_ASSERT((space - 2) / 2 >= buf_len); /* overflow not possible, buffer limits */
- q = DUK_BW_ENSURE_GETPTR(thr, &js_ctx->bw, space);
-
-#if defined(DUK_USE_JX) && defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom)
-#endif
-#if defined(DUK_USE_JX)
- {
- *q++ = DUK_ASC_PIPE;
- q = duk__enc_buffer_data_hex(buf_data, buf_len, q);
- *q++ = DUK_ASC_PIPE;
-
- }
-#endif
-#if defined(DUK_USE_JX) && defined(DUK_USE_JC)
- else
-#endif
-#if defined(DUK_USE_JC)
- {
- DUK_ASSERT(js_ctx->flag_ext_compatible);
- DUK_MEMCPY((void *) q, (const void *) "{\"_buf\":\"", 9); /* len: 9 */
- q += 9;
- q = duk__enc_buffer_data_hex(buf_data, buf_len, q);
- *q++ = DUK_ASC_DOUBLEQUOTE;
- *q++ = DUK_ASC_RCURLY;
- }
-#endif
-
- DUK_BW_SET_PTR(thr, &js_ctx->bw, q);
-}
-
-DUK_LOCAL void duk__enc_buffer(duk_json_enc_ctx *js_ctx, duk_hbuffer *h) {
- duk__enc_buffer_data(js_ctx,
- (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(js_ctx->thr->heap, h),
- (duk_size_t) DUK_HBUFFER_GET_SIZE(h));
-}
-#endif /* DUK_USE_JX || DUK_USE_JC */
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
-DUK_LOCAL void duk__enc_pointer(duk_json_enc_ctx *js_ctx, void *ptr) {
- char buf[64]; /* XXX: how to figure correct size? */
- const char *fmt;
-
- DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible); /* caller checks */
- DUK_ASSERT(js_ctx->flag_ext_custom_or_compatible);
-
- DUK_MEMZERO(buf, sizeof(buf));
-
- /* The #ifdef clutter here needs to handle the three cases:
- * (1) JX+JC, (2) JX only, (3) JC only.
- */
-#if defined(DUK_USE_JX) && defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom)
-#endif
-#if defined(DUK_USE_JX)
- {
- fmt = ptr ? "(%p)" : "(null)";
- }
-#endif
-#if defined(DUK_USE_JX) && defined(DUK_USE_JC)
- else
-#endif
-#if defined(DUK_USE_JC)
- {
- DUK_ASSERT(js_ctx->flag_ext_compatible);
- fmt = ptr ? "{\"_ptr\":\"%p\"}" : "{\"_ptr\":\"null\"}";
- }
-#endif
-
- /* When ptr == NULL, the format argument is unused. */
- DUK_SNPRINTF(buf, sizeof(buf) - 1, fmt, ptr); /* must not truncate */
- DUK__EMIT_CSTR(js_ctx, buf);
-}
-#endif /* DUK_USE_JX || DUK_USE_JC */
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
-DUK_LOCAL void duk__enc_bufferobject(duk_json_enc_ctx *js_ctx, duk_hbufferobject *h_bufobj) {
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- if (h_bufobj->buf == NULL || !DUK_HBUFFEROBJECT_VALID_SLICE(h_bufobj)) {
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- } else {
- /* Handle both full and partial slice (as long as covered). */
- duk__enc_buffer_data(js_ctx,
- (duk_uint8_t *) DUK_HBUFFEROBJECT_GET_SLICE_BASE(js_ctx->thr->heap, h_bufobj),
- (duk_size_t) h_bufobj->length);
- }
-}
-#endif /* DUK_USE_JX || DUK_USE_JC */
-
-/* Indent helper. Calling code relies on js_ctx->recursion_depth also being
- * directly related to indent depth.
- */
-#if defined(DUK_USE_PREFER_SIZE)
-DUK_LOCAL void duk__enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_int_t depth) {
- DUK_ASSERT(js_ctx->h_gap != NULL);
- DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap) > 0); /* caller guarantees */
-
- DUK__EMIT_1(js_ctx, 0x0a);
- while (depth-- > 0) {
- DUK__EMIT_HSTR(js_ctx, js_ctx->h_gap);
- }
-}
-#else /* DUK_USE_PREFER_SIZE */
-DUK_LOCAL void duk__enc_newline_indent(duk_json_enc_ctx *js_ctx, duk_int_t depth) {
- const duk_uint8_t *gap_data;
- duk_size_t gap_len;
- duk_size_t avail_bytes; /* bytes of indent available for copying */
- duk_size_t need_bytes; /* bytes of indent still needed */
- duk_uint8_t *p_start;
- duk_uint8_t *p;
-
- DUK_ASSERT(js_ctx->h_gap != NULL);
- DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap) > 0); /* caller guarantees */
-
- DUK__EMIT_1(js_ctx, 0x0a);
- if (DUK_UNLIKELY(depth == 0)) {
- return;
- }
-
- /* To handle deeper indents efficiently, make use of copies we've
- * already emitted. In effect we can emit a sequence of 1, 2, 4,
- * 8, etc copies, and then finish the last run. Byte counters
- * avoid multiply with gap_len on every loop.
- */
-
- gap_data = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(js_ctx->h_gap);
- gap_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(js_ctx->h_gap);
- DUK_ASSERT(gap_len > 0);
-
- need_bytes = gap_len * depth;
- p = DUK_BW_ENSURE_GETPTR(js_ctx->thr, &js_ctx->bw, need_bytes);
- p_start = p;
-
- DUK_MEMCPY((void *) p, (const void *) gap_data, (size_t) gap_len);
- p += gap_len;
- avail_bytes = gap_len;
- DUK_ASSERT(need_bytes >= gap_len);
- need_bytes -= gap_len;
-
- while (need_bytes >= avail_bytes) {
- DUK_MEMCPY((void *) p, (const void *) p_start, (size_t) avail_bytes);
- p += avail_bytes;
- need_bytes -= avail_bytes;
- avail_bytes <<= 1;
- }
-
- DUK_ASSERT(need_bytes < avail_bytes); /* need_bytes may be zero */
- DUK_MEMCPY((void *) p, (const void *) p_start, (size_t) need_bytes);
- p += need_bytes;
- /*avail_bytes += need_bytes*/
-
- DUK_BW_SET_PTR(js_ctx->thr, &js_ctx->bw, p);
-}
-#endif /* DUK_USE_PREFER_SIZE */
-
-/* Shared entry handling for object/array serialization. */
-DUK_LOCAL void duk__enc_objarr_entry(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_hobject *h_target;
- duk_uint_fast32_t i, n;
-
- *entry_top = duk_get_top(ctx);
-
- duk_require_stack(ctx, DUK_JSON_ENC_REQSTACK);
-
- /* Loop check using a hybrid approach: a fixed-size visited[] array
- * with overflow in a loop check object.
- */
-
- h_target = duk_get_hobject(ctx, -1); /* object or array */
- DUK_ASSERT(h_target != NULL);
-
- n = js_ctx->recursion_depth;
- if (DUK_UNLIKELY(n > DUK_JSON_ENC_LOOPARRAY)) {
- n = DUK_JSON_ENC_LOOPARRAY;
- }
- for (i = 0; i < n; i++) {
- if (DUK_UNLIKELY(js_ctx->visiting[i] == h_target)) {
- DUK_DD(DUK_DDPRINT("slow path loop detect"));
- DUK_ERROR_TYPE((duk_hthread *) ctx, DUK_STR_CYCLIC_INPUT);
- }
- }
- if (js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY) {
- js_ctx->visiting[js_ctx->recursion_depth] = h_target;
- } else {
- duk_push_sprintf(ctx, DUK_STR_FMT_PTR, (void *) h_target);
- duk_dup_top(ctx); /* -> [ ... voidp voidp ] */
- if (duk_has_prop(ctx, js_ctx->idx_loop)) {
- DUK_ERROR_TYPE((duk_hthread *) ctx, DUK_STR_CYCLIC_INPUT);
- }
- duk_push_true(ctx); /* -> [ ... voidp true ] */
- duk_put_prop(ctx, js_ctx->idx_loop); /* -> [ ... ] */
- }
-
- /* C recursion check. */
-
- DUK_ASSERT(js_ctx->recursion_depth >= 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- if (js_ctx->recursion_depth >= js_ctx->recursion_limit) {
- DUK_ERROR_RANGE((duk_hthread *) ctx, DUK_STR_JSONENC_RECLIMIT);
- }
- js_ctx->recursion_depth++;
-
- DUK_DDD(DUK_DDDPRINT("shared entry finished: top=%ld, loop=%!T",
- (long) duk_get_top(ctx), (duk_tval *) duk_get_tval(ctx, js_ctx->idx_loop)));
-}
-
-/* Shared exit handling for object/array serialization. */
-DUK_LOCAL void duk__enc_objarr_exit(duk_json_enc_ctx *js_ctx, duk_idx_t *entry_top) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_hobject *h_target;
-
- /* C recursion check. */
-
- DUK_ASSERT(js_ctx->recursion_depth > 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- js_ctx->recursion_depth--;
-
- /* Loop check. */
-
- h_target = duk_get_hobject(ctx, *entry_top - 1); /* original target at entry_top - 1 */
- DUK_ASSERT(h_target != NULL);
-
- if (js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY) {
- /* Previous entry was inside visited[], nothing to do. */
- } else {
- duk_push_sprintf(ctx, DUK_STR_FMT_PTR, (void *) h_target);
- duk_del_prop(ctx, js_ctx->idx_loop); /* -> [ ... ] */
- }
-
- /* Restore stack top after unbalanced code paths. */
- duk_set_top(ctx, *entry_top);
-
- DUK_DDD(DUK_DDDPRINT("shared entry finished: top=%ld, loop=%!T",
- (long) duk_get_top(ctx), (duk_tval *) duk_get_tval(ctx, js_ctx->idx_loop)));
-}
-
-/* The JO(value) operation: encode object.
- *
- * Stack policy: [ object ] -> [ object ].
- */
-DUK_LOCAL void duk__enc_object(duk_json_enc_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_hstring *h_key;
- duk_idx_t entry_top;
- duk_idx_t idx_obj;
- duk_idx_t idx_keys;
- duk_bool_t emitted;
- duk_uarridx_t arr_len, i;
- duk_size_t prev_size;
-
- DUK_DDD(DUK_DDDPRINT("duk__enc_object: obj=%!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk__enc_objarr_entry(js_ctx, &entry_top);
-
- idx_obj = entry_top - 1;
-
- if (js_ctx->idx_proplist >= 0) {
- idx_keys = js_ctx->idx_proplist;
- } else {
- /* XXX: would be nice to enumerate an object at specified index */
- duk_dup(ctx, idx_obj);
- (void) duk_hobject_get_enumerated_keys(ctx, DUK_ENUM_OWN_PROPERTIES_ONLY /*flags*/); /* [ ... target ] -> [ ... target keys ] */
- idx_keys = duk_require_normalize_index(ctx, -1);
- /* leave stack unbalanced on purpose */
- }
-
- DUK_DDD(DUK_DDDPRINT("idx_keys=%ld, h_keys=%!T",
- (long) idx_keys, (duk_tval *) duk_get_tval(ctx, idx_keys)));
-
- /* Steps 8-10 have been merged to avoid a "partial" variable. */
-
- DUK__EMIT_1(js_ctx, DUK_ASC_LCURLY);
-
- /* XXX: keys is an internal object with all keys to be processed
- * in its (gapless) array part. Because nobody can touch the keys
- * object, we could iterate its array part directly (keeping in mind
- * that it can be reallocated).
- */
-
- arr_len = (duk_uarridx_t) duk_get_length(ctx, idx_keys);
- emitted = 0;
- for (i = 0; i < arr_len; i++) {
- duk_get_prop_index(ctx, idx_keys, i); /* -> [ ... key ] */
-
- DUK_DDD(DUK_DDDPRINT("object property loop: holder=%!T, key=%!T",
- (duk_tval *) duk_get_tval(ctx, idx_obj),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- h_key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_key != NULL);
-
- prev_size = DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw);
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth);
- duk__enc_key_autoquote(js_ctx, h_key);
- DUK__EMIT_2(js_ctx, DUK_ASC_COLON, DUK_ASC_SPACE);
- } else {
- duk__enc_key_autoquote(js_ctx, h_key);
- DUK__EMIT_1(js_ctx, DUK_ASC_COLON);
- }
-
- /* [ ... key ] */
-
- if (DUK_UNLIKELY(duk__enc_value(js_ctx, idx_obj) == 0)) {
- /* Value would yield 'undefined', so skip key altogether.
- * Side effects have already happened.
- */
- DUK_BW_SET_SIZE(js_ctx->thr, &js_ctx->bw, prev_size);
- } else {
- DUK__EMIT_1(js_ctx, DUK_ASC_COMMA);
- emitted = 1;
- }
-
- /* [ ... ] */
- }
-
- if (emitted) {
- DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA);
- DUK__UNEMIT_1(js_ctx); /* eat trailing comma */
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- DUK_ASSERT(js_ctx->recursion_depth >= 1);
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1);
- }
- }
- DUK__EMIT_1(js_ctx, DUK_ASC_RCURLY);
-
- duk__enc_objarr_exit(js_ctx, &entry_top);
-
- DUK_ASSERT_TOP(ctx, entry_top);
-}
-
-/* The JA(value) operation: encode array.
- *
- * Stack policy: [ array ] -> [ array ].
- */
-DUK_LOCAL void duk__enc_array(duk_json_enc_ctx *js_ctx) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_idx_t entry_top;
- duk_idx_t idx_arr;
- duk_bool_t emitted;
- duk_uarridx_t i, arr_len;
-
- DUK_DDD(DUK_DDDPRINT("duk__enc_array: array=%!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk__enc_objarr_entry(js_ctx, &entry_top);
-
- idx_arr = entry_top - 1;
-
- /* Steps 8-10 have been merged to avoid a "partial" variable. */
-
- DUK__EMIT_1(js_ctx, DUK_ASC_LBRACKET);
-
- arr_len = (duk_uarridx_t) duk_get_length(ctx, idx_arr);
- emitted = 0;
- for (i = 0; i < arr_len; i++) {
- DUK_DDD(DUK_DDDPRINT("array entry loop: array=%!T, index=%ld, arr_len=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_arr),
- (long) i, (long) arr_len));
-
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- DUK_ASSERT(js_ctx->recursion_depth >= 1);
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth);
- }
-
- /* XXX: duk_push_uint_string() */
- duk_push_uint(ctx, (duk_uint_t) i);
- duk_to_string(ctx, -1); /* -> [ ... key ] */
-
- /* [ ... key ] */
-
- if (DUK_UNLIKELY(duk__enc_value(js_ctx, idx_arr) == 0)) {
- /* Value would normally be omitted, replace with 'null'. */
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- } else {
- ;
- }
-
- /* [ ... ] */
-
- DUK__EMIT_1(js_ctx, DUK_ASC_COMMA);
- emitted = 1;
- }
-
- if (emitted) {
- DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA);
- DUK__UNEMIT_1(js_ctx); /* eat trailing comma */
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- DUK_ASSERT(js_ctx->recursion_depth >= 1);
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1);
- }
- }
- DUK__EMIT_1(js_ctx, DUK_ASC_RBRACKET);
-
- duk__enc_objarr_exit(js_ctx, &entry_top);
-
- DUK_ASSERT_TOP(ctx, entry_top);
-}
-
-/* The Str(key, holder) operation.
- *
- * Stack policy: [ ... key ] -> [ ... ]
- */
-DUK_LOCAL duk_bool_t duk__enc_value(duk_json_enc_ctx *js_ctx, duk_idx_t idx_holder) {
- duk_context *ctx = (duk_context *) js_ctx->thr;
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
- duk_tval *tv;
- duk_tval *tv_holder;
- duk_tval *tv_key;
- duk_small_int_t c;
-
- DUK_DDD(DUK_DDDPRINT("duk__enc_value: idx_holder=%ld, holder=%!T, key=%!T",
- (long) idx_holder, (duk_tval *) duk_get_tval(ctx, idx_holder),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- DUK_UNREF(thr);
-
- tv_holder = DUK_GET_TVAL_POSIDX(ctx, idx_holder);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_holder));
- tv_key = DUK_GET_TVAL_NEGIDX(ctx, -1);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv_key));
- (void) duk_hobject_getprop(thr, tv_holder, tv_key);
-
- /* -> [ ... key val ] */
-
- DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- h = duk_get_hobject_or_lfunc_coerce(ctx, -1);
- if (h != NULL) {
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_TO_JSON);
- h = duk_get_hobject_or_lfunc_coerce(ctx, -1); /* toJSON() can also be a lightfunc */
-
- if (h != NULL && DUK_HOBJECT_IS_CALLABLE(h)) {
- DUK_DDD(DUK_DDDPRINT("value is object, has callable toJSON() -> call it"));
- /* XXX: duk_dup_unvalidated(ctx, -2) etc. */
- duk_dup(ctx, -2); /* -> [ ... key val toJSON val ] */
- duk_dup(ctx, -4); /* -> [ ... key val toJSON val key ] */
- duk_call_method(ctx, 1); /* -> [ ... key val val' ] */
- duk_remove(ctx, -2); /* -> [ ... key val' ] */
- } else {
- duk_pop(ctx); /* -> [ ... key val ] */
- }
- }
-
- /* [ ... key val ] */
-
- DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- if (js_ctx->h_replacer) {
- /* XXX: Here a "slice copy" would be useful. */
- DUK_DDD(DUK_DDDPRINT("replacer is set, call replacer"));
- duk_push_hobject(ctx, js_ctx->h_replacer); /* -> [ ... key val replacer ] */
- duk_dup(ctx, idx_holder); /* -> [ ... key val replacer holder ] */
- duk_dup(ctx, -4); /* -> [ ... key val replacer holder key ] */
- duk_dup(ctx, -4); /* -> [ ... key val replacer holder key val ] */
- duk_call_method(ctx, 2); /* -> [ ... key val val' ] */
- duk_remove(ctx, -2); /* -> [ ... key val' ] */
- }
-
- /* [ ... key val ] */
-
- DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- tv = DUK_GET_TVAL_NEGIDX(ctx, -1);
- if (DUK_TVAL_IS_OBJECT(tv)) {
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- duk_hbufferobject *h_bufobj;
- h_bufobj = (duk_hbufferobject *) h;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- /* Conceptually we'd extract the plain underlying buffer
- * or its slice and then do a type mask check below to
- * see if we should reject it. Do the mask check here
- * instead to avoid making a copy of the buffer slice.
- */
-
- if (js_ctx->mask_for_undefined & DUK_TYPE_MASK_BUFFER) {
- DUK_DDD(DUK_DDDPRINT("-> bufferobject (-> plain buffer) will result in undefined (type mask check)"));
- goto pop2_undef;
- }
- DUK_DDD(DUK_DDDPRINT("-> bufferobject won't result in undefined, encode directly"));
- duk__enc_bufferobject(js_ctx, h_bufobj);
- goto pop2_emitted;
-#else
- DUK_DDD(DUK_DDDPRINT("no JX/JC support, bufferobject/buffer will always result in undefined"));
- goto pop2_undef;
-#endif
- } else {
- c = (duk_small_int_t) DUK_HOBJECT_GET_CLASS_NUMBER(h);
- switch ((int) c) {
- case DUK_HOBJECT_CLASS_NUMBER: {
- DUK_DDD(DUK_DDDPRINT("value is a Number object -> coerce with ToNumber()"));
- duk_to_number(ctx, -1);
- /* The coercion potentially invokes user .valueOf() and .toString()
- * but can't result in a function value because [[DefaultValue]] would
- * reject such a result: test-dev-json-stringify-coercion-1.js.
- */
- DUK_ASSERT(!duk_is_callable(ctx, -1));
- break;
- }
- case DUK_HOBJECT_CLASS_STRING: {
- DUK_DDD(DUK_DDDPRINT("value is a String object -> coerce with ToString()"));
- duk_to_string(ctx, -1);
- /* Same coercion behavior as for Number. */
- DUK_ASSERT(!duk_is_callable(ctx, -1));
- break;
- }
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- case DUK_HOBJECT_CLASS_POINTER:
-#endif
- case DUK_HOBJECT_CLASS_BOOLEAN: {
- DUK_DDD(DUK_DDDPRINT("value is a Boolean/Buffer/Pointer object -> get internal value"));
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- duk_remove(ctx, -2);
- break;
- }
- default: {
- /* Normal object which doesn't get automatically coerced to a
- * primitive value. Functions are checked for specially. The
- * primitive value coercions for Number, String, Pointer, and
- * Boolean can't result in functions so suffices to check here.
- */
- DUK_ASSERT(h != NULL);
- if (DUK_HOBJECT_IS_CALLABLE(h)) {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM |
- DUK_JSON_FLAG_EXT_COMPATIBLE)) {
- /* We only get here when doing non-standard JSON encoding */
- DUK_DDD(DUK_DDDPRINT("-> function allowed, serialize to custom format"));
- DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible);
- DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function);
- goto pop2_emitted;
- } else {
- DUK_DDD(DUK_DDDPRINT("-> will result in undefined (function)"));
- goto pop2_undef;
- }
-#else /* DUK_USE_JX || DUK_USE_JC */
- DUK_DDD(DUK_DDDPRINT("-> will result in undefined (function)"));
- goto pop2_undef;
-#endif /* DUK_USE_JX || DUK_USE_JC */
- }
- }
- } /* end switch */
- }
- }
-
- /* [ ... key val ] */
-
- DUK_DDD(DUK_DDDPRINT("value=%!T", (duk_tval *) duk_get_tval(ctx, -1)));
-
- if (duk_check_type_mask(ctx, -1, js_ctx->mask_for_undefined)) {
- /* will result in undefined */
- DUK_DDD(DUK_DDDPRINT("-> will result in undefined (type mask check)"));
- goto pop2_undef;
- }
- tv = DUK_GET_TVAL_NEGIDX(ctx, -1);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- /* When JX/JC not in use, the type mask above will avoid this case if needed. */
- case DUK_TAG_UNDEFINED: {
- DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_undefined);
- break;
- }
-#endif
- case DUK_TAG_NULL: {
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- break;
- }
- case DUK_TAG_BOOLEAN: {
- DUK__EMIT_STRIDX(js_ctx, DUK_TVAL_GET_BOOLEAN(tv) ?
- DUK_STRIDX_TRUE : DUK_STRIDX_FALSE);
- break;
- }
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- /* When JX/JC not in use, the type mask above will avoid this case if needed. */
- case DUK_TAG_POINTER: {
- duk__enc_pointer(js_ctx, DUK_TVAL_GET_POINTER(tv));
- break;
- }
-#endif /* DUK_USE_JX || DUK_USE_JC */
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h != NULL);
-
- duk__enc_quote_string(js_ctx, h);
- break;
- }
- case DUK_TAG_OBJECT: {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- /* Function values are handled completely above (including
- * coercion results):
- */
- DUK_ASSERT(!DUK_HOBJECT_IS_CALLABLE(h));
-
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAY) {
- duk__enc_array(js_ctx);
- } else {
- duk__enc_object(js_ctx);
- }
- break;
- }
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- /* When JX/JC not in use, the type mask above will avoid this case if needed. */
- case DUK_TAG_BUFFER: {
- duk__enc_buffer(js_ctx, DUK_TVAL_GET_BUFFER(tv));
- break;
- }
-#endif /* DUK_USE_JX || DUK_USE_JC */
- case DUK_TAG_LIGHTFUNC: {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- /* We only get here when doing non-standard JSON encoding */
- DUK_ASSERT(js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible);
- DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function);
-#else
- /* Standard JSON omits functions */
- DUK_UNREACHABLE();
-#endif
- break;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
- /* Number serialization has a significant impact relative to
- * other fast path code, so careful fast path for fastints.
- */
- duk__enc_fastint_tval(js_ctx, tv);
- break;
-#endif
- default: {
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- /* XXX: A fast path for usual integers would be useful when
- * fastint support is not enabled.
- */
- duk__enc_double(js_ctx);
- break;
- }
- }
-
- pop2_emitted:
- duk_pop_2(ctx); /* [ ... key val ] -> [ ... ] */
- return 1; /* emitted */
-
- pop2_undef:
- duk_pop_2(ctx); /* [ ... key val ] -> [ ... ] */
- return 0; /* not emitted */
-}
-
-/* E5 Section 15.12.3, main algorithm, step 4.b.ii steps 1-4. */
-DUK_LOCAL duk_bool_t duk__enc_allow_into_proplist(duk_tval *tv) {
- duk_hobject *h;
- duk_small_int_t c;
-
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_STRING(tv) || DUK_TVAL_IS_NUMBER(tv)) {
- return 1;
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- c = (duk_small_int_t) DUK_HOBJECT_GET_CLASS_NUMBER(h);
- if (c == DUK_HOBJECT_CLASS_STRING || c == DUK_HOBJECT_CLASS_NUMBER) {
- return 1;
- }
- }
-
- return 0;
-}
-
-/*
- * JSON.stringify() fast path
- *
- * Otherwise supports full JSON, JX, and JC features, but bails out on any
- * possible side effect which might change the value being serialized. The
- * fast path can take advantage of the fact that the value being serialized
- * is unchanged so that we can walk directly through property tables etc.
- */
-
-#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH)
-DUK_LOCAL duk_bool_t duk__json_stringify_fast_value(duk_json_enc_ctx *js_ctx, duk_tval *tv) {
- duk_uint_fast32_t i, n;
-
- DUK_DDD(DUK_DDDPRINT("stringify fast: %!T", tv));
-
- DUK_ASSERT(js_ctx != NULL);
- DUK_ASSERT(js_ctx->thr != NULL);
-
-#if 0 /* disabled for now */
- restart_match:
-#endif
-
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED: {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom || js_ctx->flag_ext_compatible) {
- DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_undefined);
- break;
- } else {
- goto emit_undefined;
- }
-#else
- goto emit_undefined;
-#endif
- }
- case DUK_TAG_NULL: {
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- break;
- }
- case DUK_TAG_BOOLEAN: {
- DUK__EMIT_STRIDX(js_ctx, DUK_TVAL_GET_BOOLEAN(tv) ?
- DUK_STRIDX_TRUE : DUK_STRIDX_FALSE);
- break;
- }
- case DUK_TAG_STRING: {
- duk_hstring *h;
-
- h = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h != NULL);
- duk__enc_quote_string(js_ctx, h);
- break;
- }
- case DUK_TAG_OBJECT: {
- duk_hobject *obj;
- duk_tval *tv_val;
- duk_bool_t emitted = 0;
- duk_uint32_t c_bit, c_all, c_array, c_unbox, c_undef,
- c_func, c_bufobj, c_object;
-
- /* For objects JSON.stringify() only looks for own, enumerable
- * properties which is nice for the fast path here.
- *
- * For arrays JSON.stringify() uses [[Get]] so it will actually
- * inherit properties during serialization! This fast path
- * supports gappy arrays as long as there's no actual inherited
- * property (which might be a getter etc).
- *
- * Since recursion only happens for objects, we can have both
- * recursion and loop checks here. We use a simple, depth-limited
- * loop check in the fast path because the object-based tracking
- * is very slow (when tested, it accounted for 50% of fast path
- * execution time for input data with a lot of small objects!).
- */
-
- /* XXX: for real world code, could just ignore array inheritance
- * and only look at array own properties.
- */
-
- /* We rely on a few object flag / class number relationships here,
- * assert for them.
- */
-
- obj = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT_HOBJECT_VALID(obj);
-
- /* Once recursion depth is increased, exit path must decrease
- * it (though it's OK to abort the fast path).
- */
-
- DUK_ASSERT(js_ctx->recursion_depth >= 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- if (js_ctx->recursion_depth >= js_ctx->recursion_limit) {
- DUK_DD(DUK_DDPRINT("fast path recursion limit"));
- DUK_ERROR_RANGE(js_ctx->thr, DUK_STR_JSONDEC_RECLIMIT);
- }
-
- for (i = 0, n = (duk_uint_fast32_t) js_ctx->recursion_depth; i < n; i++) {
- if (DUK_UNLIKELY(js_ctx->visiting[i] == obj)) {
- DUK_DD(DUK_DDPRINT("fast path loop detect"));
- DUK_ERROR_TYPE(js_ctx->thr, DUK_STR_CYCLIC_INPUT);
- }
- }
-
- /* Guaranteed by recursion_limit setup so we don't have to
- * check twice.
- */
- DUK_ASSERT(js_ctx->recursion_depth < DUK_JSON_ENC_LOOPARRAY);
- js_ctx->visiting[js_ctx->recursion_depth] = obj;
- js_ctx->recursion_depth++;
-
- /* If object has a .toJSON() property, we can't be certain
- * that it wouldn't mutate any value arbitrarily, so bail
- * out of the fast path.
- *
- * If an object is a Proxy we also can't avoid side effects
- * so abandon.
- */
- /* XXX: non-callable .toJSON() doesn't need to cause an abort
- * but does at the moment, probably not worth fixing.
- */
- if (duk_hobject_hasprop_raw(js_ctx->thr, obj, DUK_HTHREAD_STRING_TO_JSON(js_ctx->thr)) ||
- DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj)) {
- DUK_DD(DUK_DDPRINT("object has a .toJSON property or object is a Proxy, abort fast path"));
- goto abort_fastpath;
- }
-
- /* We could use a switch-case for the class number but it turns out
- * a small if-else ladder on class masks is better. The if-ladder
- * should be in order of relevancy.
- */
-
- /* XXX: move masks to js_ctx? they don't change during one
- * fast path invocation.
- */
- DUK_ASSERT(DUK_HOBJECT_CLASS_MAX <= 31);
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom_or_compatible) {
- c_all = DUK_HOBJECT_CMASK_ALL;
- c_array = DUK_HOBJECT_CMASK_ARRAY;
- c_unbox = DUK_HOBJECT_CMASK_NUMBER |
- DUK_HOBJECT_CMASK_STRING |
- DUK_HOBJECT_CMASK_BOOLEAN |
- DUK_HOBJECT_CMASK_POINTER;
- c_func = DUK_HOBJECT_CMASK_FUNCTION;
- c_bufobj = DUK_HOBJECT_CMASK_ALL_BUFFEROBJECTS;
- c_undef = 0;
- c_object = c_all & ~(c_array | c_unbox | c_func | c_bufobj | c_undef);
- }
- else
-#endif
- {
- c_all = DUK_HOBJECT_CMASK_ALL;
- c_array = DUK_HOBJECT_CMASK_ARRAY;
- c_unbox = DUK_HOBJECT_CMASK_NUMBER |
- DUK_HOBJECT_CMASK_STRING |
- DUK_HOBJECT_CMASK_BOOLEAN;
- c_func = 0;
- c_bufobj = 0;
- c_undef = DUK_HOBJECT_CMASK_FUNCTION |
- DUK_HOBJECT_CMASK_POINTER |
- DUK_HOBJECT_CMASK_ALL_BUFFEROBJECTS;
- c_object = c_all & ~(c_array | c_unbox | c_func | c_bufobj | c_undef);
- }
-
- c_bit = DUK_HOBJECT_GET_CLASS_MASK(obj);
- if (c_bit & c_object) {
- /* All other object types. */
- DUK__EMIT_1(js_ctx, DUK_ASC_LCURLY);
-
- /* A non-Array object should not have an array part in practice.
- * But since it is supported internally (and perhaps used at some
- * point), check and abandon if that's the case.
- */
- if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- DUK_DD(DUK_DDPRINT("non-Array object has array part, abort fast path"));
- goto abort_fastpath;
- }
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(obj); i++) {
- duk_hstring *k;
- duk_size_t prev_size;
-
- k = DUK_HOBJECT_E_GET_KEY(js_ctx->thr->heap, obj, i);
- if (!k) {
- continue;
- }
- if (!DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(js_ctx->thr->heap, obj, i)) {
- continue;
- }
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(js_ctx->thr->heap, obj, i)) {
- /* Getter might have arbitrary side effects,
- * so bail out.
- */
- DUK_DD(DUK_DDPRINT("property is an accessor, abort fast path"));
- goto abort_fastpath;
- }
- if (DUK_HSTRING_HAS_INTERNAL(k)) {
- continue;
- }
-
- tv_val = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(js_ctx->thr->heap, obj, i);
-
- prev_size = DUK_BW_GET_SIZE(js_ctx->thr, &js_ctx->bw);
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth);
- duk__enc_key_autoquote(js_ctx, k);
- DUK__EMIT_2(js_ctx, DUK_ASC_COLON, DUK_ASC_SPACE);
- } else {
- duk__enc_key_autoquote(js_ctx, k);
- DUK__EMIT_1(js_ctx, DUK_ASC_COLON);
- }
-
- if (duk__json_stringify_fast_value(js_ctx, tv_val) == 0) {
- DUK_DD(DUK_DDPRINT("prop value not supported, rewind key and colon"));
- DUK_BW_SET_SIZE(js_ctx->thr, &js_ctx->bw, prev_size);
- } else {
- DUK__EMIT_1(js_ctx, DUK_ASC_COMMA);
- emitted = 1;
- }
- }
-
- /* If any non-Array value had enumerable virtual own
- * properties, they should be serialized here. Standard
- * types don't.
- */
-
- if (emitted) {
- DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA);
- DUK__UNEMIT_1(js_ctx); /* eat trailing comma */
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- DUK_ASSERT(js_ctx->recursion_depth >= 1);
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1);
- }
- }
- DUK__EMIT_1(js_ctx, DUK_ASC_RCURLY);
- } else if (c_bit & c_array) {
- duk_uint_fast32_t arr_len;
- duk_uint_fast32_t asize;
-
- DUK__EMIT_1(js_ctx, DUK_ASC_LBRACKET);
-
- /* Assume arrays are dense in the fast path. */
- if (!DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- DUK_DD(DUK_DDPRINT("Array object is sparse, abort fast path"));
- goto abort_fastpath;
- }
-
- arr_len = (duk_uint_fast32_t) duk_hobject_get_length(js_ctx->thr, obj);
- asize = (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(obj);
- if (arr_len > asize) {
- /* Array length is larger than 'asize'. This shouldn't
- * happen in practice. Bail out just in case.
- */
- DUK_DD(DUK_DDPRINT("arr_len > asize, abort fast path"));
- goto abort_fastpath;
- }
- /* Array part may be larger than 'length'; if so, iterate
- * only up to array 'length'.
- */
- for (i = 0; i < arr_len; i++) {
- DUK_ASSERT(i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(obj));
-
- tv_val = DUK_HOBJECT_A_GET_VALUE_PTR(js_ctx->thr->heap, obj, i);
-
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth);
- }
-
- if (DUK_UNLIKELY(DUK_TVAL_IS_UNUSED(tv_val))) {
- /* Gap in array; check for inherited property,
- * bail out if one exists. This should be enough
- * to support gappy arrays for all practical code.
- */
- duk_hstring *h_tmp;
- duk_bool_t has_inherited;
-
- /* XXX: refactor into an internal helper, pretty awkward */
- duk_push_uint((duk_context *) js_ctx->thr, (duk_uint_t) i);
- h_tmp = duk_to_hstring((duk_context *) js_ctx->thr, -1);
- DUK_ASSERT(h_tmp != NULL);
- has_inherited = duk_hobject_hasprop_raw(js_ctx->thr, obj, h_tmp);
- duk_pop((duk_context *) js_ctx->thr);
-
- if (has_inherited) {
- DUK_D(DUK_DPRINT("gap in array, conflicting inherited property, abort fast path"));
- goto abort_fastpath;
- }
-
- /* Ordinary gap, undefined encodes to 'null' in
- * standard JSON (and no JX/JC support here now).
- */
- DUK_D(DUK_DPRINT("gap in array, no conflicting inherited property, remain on fast path"));
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- } else {
- if (duk__json_stringify_fast_value(js_ctx, tv_val) == 0) {
- DUK__EMIT_STRIDX(js_ctx, DUK_STRIDX_LC_NULL);
- }
- }
- DUK__EMIT_1(js_ctx, DUK_ASC_COMMA);
- emitted = 1;
- }
-
- if (emitted) {
- DUK_ASSERT(*((duk_uint8_t *) DUK_BW_GET_PTR(js_ctx->thr, &js_ctx->bw) - 1) == DUK_ASC_COMMA);
- DUK__UNEMIT_1(js_ctx); /* eat trailing comma */
- if (DUK_UNLIKELY(js_ctx->h_gap != NULL)) {
- DUK_ASSERT(js_ctx->recursion_depth >= 1);
- duk__enc_newline_indent(js_ctx, js_ctx->recursion_depth - 1);
- }
- }
- DUK__EMIT_1(js_ctx, DUK_ASC_RBRACKET);
- } else if (c_bit & c_unbox) {
- /* Certain boxed types are required to go through
- * automatic unboxing. Rely on internal value being
- * sane (to avoid infinite recursion).
- */
-#if 1
- /* The code below is incorrect if .toString() or .valueOf() have
- * have been overridden. The correct approach would be to look up
- * the method(s) and if they resolve to the built-in function we
- * can safely bypass it and look up the internal value directly.
- * Unimplemented for now, abort fast path for boxed values.
- */
- goto abort_fastpath;
-#else /* disabled */
- /* Disabled until fixed, see above. */
- duk_tval *tv_internal;
-
- DUK_DD(DUK_DDPRINT("auto unboxing in fast path"));
-
- tv_internal = duk_hobject_get_internal_value_tval_ptr(js_ctx->thr->heap, obj);
- DUK_ASSERT(tv_internal != NULL);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv_internal) ||
- DUK_TVAL_IS_NUMBER(tv_internal) ||
- DUK_TVAL_IS_BOOLEAN(tv_internal) ||
- DUK_TVAL_IS_POINTER(tv_internal));
-
- tv = tv_internal;
- DUK_ASSERT(js_ctx->recursion_depth > 0);
- js_ctx->recursion_depth--; /* required to keep recursion depth correct */
- goto restart_match;
-#endif /* disabled */
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- } else if (c_bit & c_func) {
- DUK__EMIT_STRIDX(js_ctx, js_ctx->stridx_custom_function);
- } else if (c_bit & c_bufobj) {
- duk__enc_bufferobject(js_ctx, (duk_hbufferobject *) obj);
-#endif
- } else {
- DUK_ASSERT((c_bit & c_undef) != 0);
-
- /* Must decrease recursion depth before returning. */
- DUK_ASSERT(js_ctx->recursion_depth > 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- js_ctx->recursion_depth--;
- goto emit_undefined;
- }
-
- DUK_ASSERT(js_ctx->recursion_depth > 0);
- DUK_ASSERT(js_ctx->recursion_depth <= js_ctx->recursion_limit);
- js_ctx->recursion_depth--;
- break;
- }
- case DUK_TAG_BUFFER: {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom_or_compatible) {
- duk__enc_buffer(js_ctx, DUK_TVAL_GET_BUFFER(tv));
- break;
- } else {
- goto emit_undefined;
- }
-#else
- goto emit_undefined;
-#endif
- }
- case DUK_TAG_POINTER: {
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flag_ext_custom_or_compatible) {
- duk__enc_pointer(js_ctx, DUK_TVAL_GET_POINTER(tv));
- break;
- } else {
- goto emit_undefined;
- }
-#else
- goto emit_undefined;
-#endif
- }
- case DUK_TAG_LIGHTFUNC: {
- /* A lightfunc might also inherit a .toJSON() so just bail out. */
- /* XXX: Could just lookup .toJSON() and continue in fast path,
- * as it would almost never be defined.
- */
- DUK_DD(DUK_DDPRINT("value is a lightfunc, abort fast path"));
- goto abort_fastpath;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT: {
- /* Number serialization has a significant impact relative to
- * other fast path code, so careful fast path for fastints.
- */
- duk__enc_fastint_tval(js_ctx, tv);
- break;
- }
-#endif
- default: {
- /* XXX: A fast path for usual integers would be useful when
- * fastint support is not enabled.
- */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
-
- /* XXX: Stack discipline is annoying, could be changed in numconv. */
- duk_push_tval((duk_context *) js_ctx->thr, tv);
- duk__enc_double(js_ctx);
- duk_pop((duk_context *) js_ctx->thr);
-
-#if 0
- /* Could also rely on native sprintf(), but it will handle
- * values like NaN, Infinity, -0, exponent notation etc in
- * a JSON-incompatible way.
- */
- duk_double_t d;
- char buf[64];
-
- DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
- d = DUK_TVAL_GET_DOUBLE(tv);
- DUK_SPRINTF(buf, "%lg", d);
- DUK__EMIT_CSTR(js_ctx, buf);
-#endif
- }
- }
- return 1; /* not undefined */
-
- emit_undefined:
- return 0; /* value was undefined/unsupported */
-
- abort_fastpath:
- /* Error message doesn't matter: the error is ignored anyway. */
- DUK_DD(DUK_DDPRINT("aborting fast path"));
- DUK_ERROR_INTERNAL_DEFMSG(js_ctx->thr);
- return 0; /* unreachable */
-}
-
-DUK_LOCAL duk_ret_t duk__json_stringify_fast(duk_context *ctx) {
- duk_json_enc_ctx *js_ctx;
- duk_tval *tv;
-
- DUK_ASSERT(ctx != NULL);
- tv = DUK_GET_TVAL_NEGIDX(ctx, -2);
- DUK_ASSERT(DUK_TVAL_IS_POINTER(tv));
- js_ctx = (duk_json_enc_ctx *) DUK_TVAL_GET_POINTER(tv);
- DUK_ASSERT(js_ctx != NULL);
-
- tv = DUK_GET_TVAL_NEGIDX(ctx, -1);
- if (duk__json_stringify_fast_value(js_ctx, tv) == 0) {
- DUK_DD(DUK_DDPRINT("top level value not supported, fail fast path"));
- return DUK_RET_ERROR; /* error message doesn't matter, ignored anyway */
- }
-
- return 0;
-}
-#endif /* DUK_USE_JSON_STRINGIFY_FASTPATH */
-
-/*
- * Top level wrappers
- */
-
-DUK_INTERNAL
-void duk_bi_json_parse_helper(duk_context *ctx,
- duk_idx_t idx_value,
- duk_idx_t idx_reviver,
- duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_json_dec_ctx js_ctx_alloc;
- duk_json_dec_ctx *js_ctx = &js_ctx_alloc;
- duk_hstring *h_text;
-#ifdef DUK_USE_ASSERTIONS
- duk_idx_t entry_top = duk_get_top(ctx);
-#endif
-
- /* negative top-relative indices not allowed now */
- DUK_ASSERT(idx_value == DUK_INVALID_INDEX || idx_value >= 0);
- DUK_ASSERT(idx_reviver == DUK_INVALID_INDEX || idx_reviver >= 0);
-
- DUK_DDD(DUK_DDDPRINT("JSON parse start: text=%!T, reviver=%!T, flags=0x%08lx, stack_top=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_value),
- (duk_tval *) duk_get_tval(ctx, idx_reviver),
- (unsigned long) flags,
- (long) duk_get_top(ctx)));
-
- DUK_MEMZERO(&js_ctx_alloc, sizeof(js_ctx_alloc));
- js_ctx->thr = thr;
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- /* nothing now */
-#endif
- js_ctx->recursion_limit = DUK_USE_JSON_DEC_RECLIMIT;
- DUK_ASSERT(js_ctx->recursion_depth == 0);
-
- /* Flag handling currently assumes that flags are consistent. This is OK
- * because the call sites are now strictly controlled.
- */
-
- js_ctx->flags = flags;
-#if defined(DUK_USE_JX)
- js_ctx->flag_ext_custom = flags & DUK_JSON_FLAG_EXT_CUSTOM;
-#endif
-#if defined(DUK_USE_JC)
- js_ctx->flag_ext_compatible = flags & DUK_JSON_FLAG_EXT_COMPATIBLE;
-#endif
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- js_ctx->flag_ext_custom_or_compatible = flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE);
-#endif
-
- h_text = duk_to_hstring(ctx, idx_value); /* coerce in-place */
- DUK_ASSERT(h_text != NULL);
-
- /* JSON parsing code is allowed to read [p_start,p_end]: p_end is
- * valid and points to the string NUL terminator (which is always
- * guaranteed for duk_hstrings.
- */
- js_ctx->p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_text);
- js_ctx->p = js_ctx->p_start;
- js_ctx->p_end = ((const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_text)) +
- DUK_HSTRING_GET_BYTELEN(h_text);
- DUK_ASSERT(*(js_ctx->p_end) == 0x00);
-
- duk__dec_value(js_ctx); /* -> [ ... value ] */
-
- /* Trailing whitespace has been eaten by duk__dec_value(), so if
- * we're not at end of input here, it's a SyntaxError.
- */
-
- if (js_ctx->p != js_ctx->p_end) {
- duk__dec_syntax_error(js_ctx);
- }
-
- if (duk_is_callable(ctx, idx_reviver)) {
- DUK_DDD(DUK_DDDPRINT("applying reviver: %!T",
- (duk_tval *) duk_get_tval(ctx, idx_reviver)));
-
- js_ctx->idx_reviver = idx_reviver;
-
- duk_push_object(ctx);
- duk_dup(ctx, -2); /* -> [ ... val root val ] */
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_EMPTY_STRING); /* default attrs ok */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING); /* -> [ ... val root "" ] */
-
- DUK_DDD(DUK_DDDPRINT("start reviver walk, root=%!T, name=%!T",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk__dec_reviver_walk(js_ctx); /* [ ... val root "" ] -> [ ... val val' ] */
- duk_remove(ctx, -2); /* -> [ ... val' ] */
- } else {
- DUK_DDD(DUK_DDDPRINT("reviver does not exist or is not callable: %!T",
- (duk_tval *) duk_get_tval(ctx, idx_reviver)));
- }
-
- /* Final result is at stack top. */
-
- DUK_DDD(DUK_DDDPRINT("JSON parse end: text=%!T, reviver=%!T, flags=0x%08lx, result=%!T, stack_top=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_value),
- (duk_tval *) duk_get_tval(ctx, idx_reviver),
- (unsigned long) flags,
- (duk_tval *) duk_get_tval(ctx, -1),
- (long) duk_get_top(ctx)));
-
- DUK_ASSERT(duk_get_top(ctx) == entry_top + 1);
-}
-
-DUK_INTERNAL
-void duk_bi_json_stringify_helper(duk_context *ctx,
- duk_idx_t idx_value,
- duk_idx_t idx_replacer,
- duk_idx_t idx_space,
- duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_json_enc_ctx js_ctx_alloc;
- duk_json_enc_ctx *js_ctx = &js_ctx_alloc;
- duk_hobject *h;
- duk_idx_t idx_holder;
- duk_idx_t entry_top;
-
- /* negative top-relative indices not allowed now */
- DUK_ASSERT(idx_value == DUK_INVALID_INDEX || idx_value >= 0);
- DUK_ASSERT(idx_replacer == DUK_INVALID_INDEX || idx_replacer >= 0);
- DUK_ASSERT(idx_space == DUK_INVALID_INDEX || idx_space >= 0);
-
- DUK_DDD(DUK_DDDPRINT("JSON stringify start: value=%!T, replacer=%!T, space=%!T, flags=0x%08lx, stack_top=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_value),
- (duk_tval *) duk_get_tval(ctx, idx_replacer),
- (duk_tval *) duk_get_tval(ctx, idx_space),
- (unsigned long) flags,
- (long) duk_get_top(ctx)));
-
- entry_top = duk_get_top(ctx);
-
- /*
- * Context init
- */
-
- DUK_MEMZERO(&js_ctx_alloc, sizeof(js_ctx_alloc));
- js_ctx->thr = thr;
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- js_ctx->h_replacer = NULL;
- js_ctx->h_gap = NULL;
-#endif
- js_ctx->idx_proplist = -1;
-
- /* Flag handling currently assumes that flags are consistent. This is OK
- * because the call sites are now strictly controlled.
- */
-
- js_ctx->flags = flags;
- js_ctx->flag_ascii_only = flags & DUK_JSON_FLAG_ASCII_ONLY;
- js_ctx->flag_avoid_key_quotes = flags & DUK_JSON_FLAG_AVOID_KEY_QUOTES;
-#ifdef DUK_USE_JX
- js_ctx->flag_ext_custom = flags & DUK_JSON_FLAG_EXT_CUSTOM;
-#endif
-#ifdef DUK_USE_JC
- js_ctx->flag_ext_compatible = flags & DUK_JSON_FLAG_EXT_COMPATIBLE;
-#endif
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- js_ctx->flag_ext_custom_or_compatible = flags & (DUK_JSON_FLAG_EXT_CUSTOM | DUK_JSON_FLAG_EXT_COMPATIBLE);
-#endif
-
- /* The #ifdef clutter here handles the JX/JC enable/disable
- * combinations properly.
- */
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
-#if defined(DUK_USE_JX)
- if (flags & DUK_JSON_FLAG_EXT_CUSTOM) {
- js_ctx->stridx_custom_undefined = DUK_STRIDX_LC_UNDEFINED;
- js_ctx->stridx_custom_nan = DUK_STRIDX_NAN;
- js_ctx->stridx_custom_neginf = DUK_STRIDX_MINUS_INFINITY;
- js_ctx->stridx_custom_posinf = DUK_STRIDX_INFINITY;
- js_ctx->stridx_custom_function =
- (flags & DUK_JSON_FLAG_AVOID_KEY_QUOTES) ?
- DUK_STRIDX_JSON_EXT_FUNCTION2 :
- DUK_STRIDX_JSON_EXT_FUNCTION1;
- }
-#endif /* DUK_USE_JX */
-#if defined(DUK_USE_JX) && defined(DUK_USE_JC)
- else
-#endif /* DUK_USE_JX && DUK_USE_JC */
-#if defined(DUK_USE_JC)
- if (js_ctx->flags & DUK_JSON_FLAG_EXT_COMPATIBLE) {
- js_ctx->stridx_custom_undefined = DUK_STRIDX_JSON_EXT_UNDEFINED;
- js_ctx->stridx_custom_nan = DUK_STRIDX_JSON_EXT_NAN;
- js_ctx->stridx_custom_neginf = DUK_STRIDX_JSON_EXT_NEGINF;
- js_ctx->stridx_custom_posinf = DUK_STRIDX_JSON_EXT_POSINF;
- js_ctx->stridx_custom_function = DUK_STRIDX_JSON_EXT_FUNCTION1;
- }
-#endif /* DUK_USE_JC */
-#endif /* DUK_USE_JX || DUK_USE_JC */
-
-#if defined(DUK_USE_JX) || defined(DUK_USE_JC)
- if (js_ctx->flags & (DUK_JSON_FLAG_EXT_CUSTOM |
- DUK_JSON_FLAG_EXT_COMPATIBLE)) {
- DUK_ASSERT(js_ctx->mask_for_undefined == 0); /* already zero */
- }
- else
-#endif /* DUK_USE_JX || DUK_USE_JC */
- {
- js_ctx->mask_for_undefined = DUK_TYPE_MASK_UNDEFINED |
- DUK_TYPE_MASK_POINTER |
- DUK_TYPE_MASK_BUFFER |
- DUK_TYPE_MASK_LIGHTFUNC;
- }
-
- DUK_BW_INIT_PUSHBUF(thr, &js_ctx->bw, DUK__JSON_STRINGIFY_BUFSIZE);
-
- js_ctx->idx_loop = duk_push_object_internal(ctx);
- DUK_ASSERT(js_ctx->idx_loop >= 0);
-
- /* [ ... buf loop ] */
-
- /*
- * Process replacer/proplist (2nd argument to JSON.stringify)
- */
-
- h = duk_get_hobject(ctx, idx_replacer);
- if (h != NULL) {
- if (DUK_HOBJECT_IS_CALLABLE(h)) {
- js_ctx->h_replacer = h;
- } else if (DUK_HOBJECT_GET_CLASS_NUMBER(h) == DUK_HOBJECT_CLASS_ARRAY) {
- /* Here the specification requires correct array index enumeration
- * which is a bit tricky for sparse arrays (it is handled by the
- * enum setup code). We now enumerate ancestors too, although the
- * specification is not very clear on whether that is required.
- */
-
- duk_uarridx_t plist_idx = 0;
- duk_small_uint_t enum_flags;
-
- js_ctx->idx_proplist = duk_push_array(ctx); /* XXX: array internal? */
-
- enum_flags = DUK_ENUM_ARRAY_INDICES_ONLY |
- DUK_ENUM_SORT_ARRAY_INDICES; /* expensive flag */
- duk_enum(ctx, idx_replacer, enum_flags);
- while (duk_next(ctx, -1 /*enum_index*/, 1 /*get_value*/)) {
- /* [ ... proplist enum_obj key val ] */
- if (duk__enc_allow_into_proplist(duk_get_tval(ctx, -1))) {
- /* XXX: duplicates should be eliminated here */
- DUK_DDD(DUK_DDDPRINT("proplist enum: key=%!T, val=%!T --> accept",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_to_string(ctx, -1); /* extra coercion of strings is OK */
- duk_put_prop_index(ctx, -4, plist_idx); /* -> [ ... proplist enum_obj key ] */
- plist_idx++;
- duk_pop(ctx);
- } else {
- DUK_DDD(DUK_DDDPRINT("proplist enum: key=%!T, val=%!T --> reject",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_pop_2(ctx);
- }
- }
- duk_pop(ctx); /* pop enum */
-
- /* [ ... proplist ] */
- }
- }
-
- /* [ ... buf loop (proplist) ] */
-
- /*
- * Process space (3rd argument to JSON.stringify)
- */
-
- h = duk_get_hobject(ctx, idx_space);
- if (h != NULL) {
- int c = DUK_HOBJECT_GET_CLASS_NUMBER(h);
- if (c == DUK_HOBJECT_CLASS_NUMBER) {
- duk_to_number(ctx, idx_space);
- } else if (c == DUK_HOBJECT_CLASS_STRING) {
- duk_to_string(ctx, idx_space);
- }
- }
-
- if (duk_is_number(ctx, idx_space)) {
- duk_small_int_t nspace;
- /* spaces[] must be static to allow initializer with old compilers like BCC */
- static const char spaces[10] = {
- DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE,
- DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE, DUK_ASC_SPACE,
- DUK_ASC_SPACE, DUK_ASC_SPACE
- }; /* XXX: helper */
-
- /* ToInteger() coercion; NaN -> 0, infinities are clamped to 0 and 10 */
- nspace = (duk_small_int_t) duk_to_int_clamped(ctx, idx_space, 0 /*minval*/, 10 /*maxval*/);
- DUK_ASSERT(nspace >= 0 && nspace <= 10);
-
- duk_push_lstring(ctx, spaces, (duk_size_t) nspace);
- js_ctx->h_gap = duk_get_hstring(ctx, -1);
- DUK_ASSERT(js_ctx->h_gap != NULL);
- } else if (duk_is_string(ctx, idx_space)) {
- /* XXX: substring in-place at idx_place? */
- duk_dup(ctx, idx_space);
- duk_substring(ctx, -1, 0, 10); /* clamp to 10 chars */
- js_ctx->h_gap = duk_get_hstring(ctx, -1);
- DUK_ASSERT(js_ctx->h_gap != NULL);
- } else {
- /* nop */
- }
-
- if (js_ctx->h_gap != NULL) {
- /* if gap is empty, behave as if not given at all */
- if (DUK_HSTRING_GET_CHARLEN(js_ctx->h_gap) == 0) {
- js_ctx->h_gap = NULL;
- }
- }
-
- /* [ ... buf loop (proplist) (gap) ] */
-
- /*
- * Fast path: assume no mutation, iterate object property tables
- * directly; bail out if that assumption doesn't hold.
- */
-
-#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH)
- if (js_ctx->h_replacer == NULL && /* replacer is a mutation risk */
- js_ctx->idx_proplist == -1) { /* proplist is very rare */
- duk_int_t pcall_rc;
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk_small_uint_t prev_mark_and_sweep_base_flags;
-#endif
-
- DUK_DD(DUK_DDPRINT("try JSON.stringify() fast path"));
-
- /* Use recursion_limit to ensure we don't overwrite js_ctx->visiting[]
- * array so we don't need two counter checks in the fast path. The
- * slow path has a much larger recursion limit which we'll use if
- * necessary.
- */
- DUK_ASSERT(DUK_USE_JSON_ENC_RECLIMIT >= DUK_JSON_ENC_LOOPARRAY);
- js_ctx->recursion_limit = DUK_JSON_ENC_LOOPARRAY;
- DUK_ASSERT(js_ctx->recursion_depth == 0);
-
- /* Execute the fast path in a protected call. If any error is thrown,
- * fall back to the slow path. This includes e.g. recursion limit
- * because the fast path has a smaller recursion limit (and simpler,
- * limited loop detection).
- */
-
- duk_push_pointer(ctx, (void *) js_ctx);
- duk_dup(ctx, idx_value);
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
- /* Must prevent finalizers which may have arbitrary side effects. */
- prev_mark_and_sweep_base_flags = thr->heap->mark_and_sweep_base_flags;
- thr->heap->mark_and_sweep_base_flags |=
- DUK_MS_FLAG_NO_FINALIZERS | /* avoid attempts to add/remove object keys */
- DUK_MS_FLAG_NO_OBJECT_COMPACTION; /* avoid attempt to compact any objects */
-#endif
-
- pcall_rc = duk_safe_call(ctx, duk__json_stringify_fast, 2 /*nargs*/, 0 /*nret*/);
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
- thr->heap->mark_and_sweep_base_flags = prev_mark_and_sweep_base_flags;
-#endif
- if (pcall_rc == DUK_EXEC_SUCCESS) {
- DUK_DD(DUK_DDPRINT("fast path successful"));
- DUK_BW_PUSH_AS_STRING(thr, &js_ctx->bw);
- goto replace_finished;
- }
-
- /* We come here for actual aborts (like encountering .toJSON())
- * but also for recursion/loop errors. Bufwriter size can be
- * kept because we'll probably need at least as much as we've
- * allocated so far.
- */
- DUK_D(DUK_DPRINT("fast path failed, serialize using slow path instead"));
- DUK_BW_RESET_SIZE(thr, &js_ctx->bw);
- js_ctx->recursion_depth = 0;
- }
-#endif
-
- /*
- * Create wrapper object and serialize
- */
-
- idx_holder = duk_push_object(ctx);
- duk_dup(ctx, idx_value);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_EMPTY_STRING);
-
- DUK_DDD(DUK_DDDPRINT("before: flags=0x%08lx, loop=%!T, replacer=%!O, "
- "proplist=%!T, gap=%!O, holder=%!T",
- (unsigned long) js_ctx->flags,
- (duk_tval *) duk_get_tval(ctx, js_ctx->idx_loop),
- (duk_heaphdr *) js_ctx->h_replacer,
- (duk_tval *) (js_ctx->idx_proplist >= 0 ? duk_get_tval(ctx, js_ctx->idx_proplist) : NULL),
- (duk_heaphdr *) js_ctx->h_gap,
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* serialize the wrapper with empty string key */
-
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
-
- /* [ ... buf loop (proplist) (gap) holder "" ] */
-
- js_ctx->recursion_limit = DUK_USE_JSON_ENC_RECLIMIT;
- DUK_ASSERT(js_ctx->recursion_depth == 0);
-
- if (DUK_UNLIKELY(duk__enc_value(js_ctx, idx_holder) == 0)) { /* [ ... holder key ] -> [ ... holder ] */
- /* Result is undefined. */
- duk_push_undefined(ctx);
- } else {
- /* Convert buffer to result string. */
- DUK_BW_PUSH_AS_STRING(thr, &js_ctx->bw);
- }
-
- DUK_DDD(DUK_DDDPRINT("after: flags=0x%08lx, loop=%!T, replacer=%!O, "
- "proplist=%!T, gap=%!O, holder=%!T",
- (unsigned long) js_ctx->flags,
- (duk_tval *) duk_get_tval(ctx, js_ctx->idx_loop),
- (duk_heaphdr *) js_ctx->h_replacer,
- (duk_tval *) (js_ctx->idx_proplist >= 0 ? duk_get_tval(ctx, js_ctx->idx_proplist) : NULL),
- (duk_heaphdr *) js_ctx->h_gap,
- (duk_tval *) duk_get_tval(ctx, idx_holder)));
-
- /* The stack has a variable shape here, so force it to the
- * desired one explicitly.
- */
-
-#if defined(DUK_USE_JSON_STRINGIFY_FASTPATH)
- replace_finished:
-#endif
- duk_replace(ctx, entry_top);
- duk_set_top(ctx, entry_top + 1);
-
- DUK_DDD(DUK_DDDPRINT("JSON stringify end: value=%!T, replacer=%!T, space=%!T, "
- "flags=0x%08lx, result=%!T, stack_top=%ld",
- (duk_tval *) duk_get_tval(ctx, idx_value),
- (duk_tval *) duk_get_tval(ctx, idx_replacer),
- (duk_tval *) duk_get_tval(ctx, idx_space),
- (unsigned long) flags,
- (duk_tval *) duk_get_tval(ctx, -1),
- (long) duk_get_top(ctx)));
-
- DUK_ASSERT(duk_get_top(ctx) == entry_top + 1);
-}
-
-/*
- * Entry points
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_json_object_parse(duk_context *ctx) {
- duk_bi_json_parse_helper(ctx,
- 0 /*idx_value*/,
- 1 /*idx_replacer*/,
- 0 /*flags*/);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_json_object_stringify(duk_context *ctx) {
- duk_bi_json_stringify_helper(ctx,
- 0 /*idx_value*/,
- 1 /*idx_replacer*/,
- 2 /*idx_space*/,
- 0 /*flags*/);
- return 1;
-}
-
-#undef DUK__JSON_DECSTR_BUFSIZE
-#undef DUK__JSON_DECSTR_CHUNKSIZE
-#undef DUK__JSON_ENCSTR_CHUNKSIZE
-#undef DUK__JSON_STRINGIFY_BUFSIZE
-#undef DUK__JSON_MAX_ESC_LEN
-#line 1 "duk_bi_logger.c"
-/*
- * Logging support
- */
-
-/* include removed: duk_internal.h */
-
-/* 3-letter log level strings */
-DUK_LOCAL const duk_uint8_t duk__log_level_strings[] = {
- (duk_uint8_t) DUK_ASC_UC_T, (duk_uint8_t) DUK_ASC_UC_R, (duk_uint8_t) DUK_ASC_UC_C,
- (duk_uint8_t) DUK_ASC_UC_D, (duk_uint8_t) DUK_ASC_UC_B, (duk_uint8_t) DUK_ASC_UC_G,
- (duk_uint8_t) DUK_ASC_UC_I, (duk_uint8_t) DUK_ASC_UC_N, (duk_uint8_t) DUK_ASC_UC_F,
- (duk_uint8_t) DUK_ASC_UC_W, (duk_uint8_t) DUK_ASC_UC_R, (duk_uint8_t) DUK_ASC_UC_N,
- (duk_uint8_t) DUK_ASC_UC_E, (duk_uint8_t) DUK_ASC_UC_R, (duk_uint8_t) DUK_ASC_UC_R,
- (duk_uint8_t) DUK_ASC_UC_F, (duk_uint8_t) DUK_ASC_UC_T, (duk_uint8_t) DUK_ASC_UC_L
-};
-
-/* Constructor */
-DUK_INTERNAL duk_ret_t duk_bi_logger_constructor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t nargs;
-
- /* Calling as a non-constructor is not meaningful. */
- if (!duk_is_constructor_call(ctx)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- nargs = duk_get_top(ctx);
- duk_set_top(ctx, 1);
-
- duk_push_this(ctx);
-
- /* [ name this ] */
-
- if (nargs == 0) {
- /* Automatic defaulting of logger name from caller. This would
- * work poorly with tail calls, but constructor calls are currently
- * never tail calls, so tail calls are not an issue now.
- */
-
- if (thr->callstack_top >= 2) {
- duk_activation *act_caller = thr->callstack + thr->callstack_top - 2;
- duk_hobject *func_caller;
-
- func_caller = DUK_ACT_GET_FUNC(act_caller);
- if (func_caller) {
- /* Stripping the filename might be a good idea
- * ("/foo/bar/quux.js" -> logger name "quux"),
- * but now used verbatim.
- */
- duk_push_hobject(ctx, func_caller);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk_replace(ctx, 0);
- }
- }
- }
- /* the stack is unbalanced here on purpose; we only rely on the
- * initial two values: [ name this ].
- */
-
- if (duk_is_string(ctx, 0)) {
- duk_dup(ctx, 0);
- duk_put_prop_stridx(ctx, 1, DUK_STRIDX_LC_N);
- } else {
- /* don't set 'n' at all, inherited value is used as name */
- }
-
- duk_compact(ctx, 1);
-
- return 0; /* keep default instance */
-}
-
-/* Default function to format objects. Tries to use toLogString() but falls
- * back to toString(). Any errors are propagated out without catching.
- */
-DUK_INTERNAL duk_ret_t duk_bi_logger_prototype_fmt(duk_context *ctx) {
- if (duk_get_prop_stridx(ctx, 0, DUK_STRIDX_TO_LOG_STRING)) {
- /* [ arg toLogString ] */
-
- duk_dup(ctx, 0);
- duk_call_method(ctx, 0);
-
- /* [ arg result ] */
- return 1;
- }
-
- /* [ arg undefined ] */
- duk_pop(ctx);
- duk_to_string(ctx, 0);
- return 1;
-}
-
-/* Default function to write a formatted log line. Writes to stderr,
- * appending a newline to the log line.
- *
- * The argument is a buffer whose visible size contains the log message.
- * This function should avoid coercing the buffer to a string to avoid
- * string table traffic.
- */
-DUK_INTERNAL duk_ret_t duk_bi_logger_prototype_raw(duk_context *ctx) {
- const char *data;
- duk_size_t data_len;
-
- DUK_UNREF(ctx);
- DUK_UNREF(data);
- DUK_UNREF(data_len);
-
-#ifdef DUK_USE_FILE_IO
- data = (const char *) duk_require_buffer(ctx, 0, &data_len);
- DUK_FWRITE((const void *) data, 1, data_len, DUK_STDERR);
- DUK_FPUTC((int) '\n', DUK_STDERR);
- DUK_FFLUSH(DUK_STDERR);
-#else
- /* nop */
-#endif
- return 0;
-}
-
-/* Log frontend shared helper, magic value indicates log level. Provides
- * frontend functions: trace(), debug(), info(), warn(), error(), fatal().
- * This needs to have small footprint, reasonable performance, minimal
- * memory churn, etc.
- */
-DUK_INTERNAL duk_ret_t duk_bi_logger_prototype_log_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_double_t now;
- duk_small_int_t entry_lev = duk_get_current_magic(ctx);
- duk_small_int_t logger_lev;
- duk_int_t nargs;
- duk_int_t i;
- duk_size_t tot_len;
- const duk_uint8_t *arg_str;
- duk_size_t arg_len;
- duk_uint8_t *buf, *p;
- const duk_uint8_t *q;
- duk_uint8_t date_buf[DUK_BI_DATE_ISO8601_BUFSIZE];
- duk_size_t date_len;
- duk_small_int_t rc;
-
- DUK_ASSERT(entry_lev >= 0 && entry_lev <= 5);
- DUK_UNREF(thr);
-
- /* XXX: sanitize to printable (and maybe ASCII) */
- /* XXX: better multiline */
-
- /*
- * Logger arguments are:
- *
- * magic: log level (0-5)
- * this: logger
- * stack: plain log args
- *
- * We want to minimize memory churn so a two-pass approach
- * is used: first pass formats arguments and computes final
- * string length, second pass copies strings either into a
- * pre-allocated and reused buffer (short messages) or into a
- * newly allocated fixed buffer. If the backend function plays
- * nice, it won't coerce the buffer to a string (and thus
- * intern it).
- */
-
- nargs = duk_get_top(ctx);
-
- /* [ arg1 ... argN this ] */
-
- /*
- * Log level check
- */
-
- duk_push_this(ctx);
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_LC_L);
- logger_lev = (duk_small_int_t) duk_get_int(ctx, -1);
- if (entry_lev < logger_lev) {
- return 0;
- }
- /* log level could be popped but that's not necessary */
-
- now = DUK_USE_DATE_GET_NOW(ctx);
- duk_bi_date_format_timeval(now, date_buf);
- date_len = DUK_STRLEN((const char *) date_buf);
-
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LC_N);
- duk_to_string(ctx, -1);
- DUK_ASSERT(duk_is_string(ctx, -1));
-
- /* [ arg1 ... argN this loggerLevel loggerName ] */
-
- /*
- * Pass 1
- */
-
- /* Line format: <time> <entryLev> <loggerName>: <msg> */
-
- tot_len = 0;
- tot_len += 3 + /* separators: space, space, colon */
- 3 + /* level string */
- date_len + /* time */
- duk_get_length(ctx, -1); /* loggerName */
-
- for (i = 0; i < nargs; i++) {
- /* When formatting an argument to a string, errors may happen from multiple
- * causes. In general we want to catch obvious errors like a toLogString()
- * throwing an error, but we don't currently try to catch every possible
- * error. In particular, internal errors (like out of memory or stack) are
- * not caught. Also, we expect Error toString() to not throw an error.
- */
- if (duk_is_object(ctx, i)) {
- /* duk_pcall_prop() may itself throw an error, but we're content
- * in catching the obvious errors (like toLogString() throwing an
- * error).
- */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_FMT);
- duk_dup(ctx, i);
- /* [ arg1 ... argN this loggerLevel loggerName 'fmt' arg ] */
- /* call: this.fmt(arg) */
- rc = duk_pcall_prop(ctx, -5 /*obj_index*/, 1 /*nargs*/);
- if (rc) {
- /* Keep the error as the result (coercing it might fail below,
- * but we don't catch that now).
- */
- ;
- }
- duk_replace(ctx, i);
- }
- (void) duk_to_lstring(ctx, i, &arg_len);
- tot_len++; /* sep (even before first one) */
- tot_len += arg_len;
- }
-
- /*
- * Pass 2
- */
-
- /* XXX: There used to be a shared log buffer here, but it was removed
- * when dynamic buffer spare was removed. The problem with using
- * bufwriter is that, without the spare, the buffer gets passed on
- * as an argument to the raw() call so it'd need to be resized
- * (reallocated) anyway. If raw() call convention is changed, this
- * could be made more efficient.
- */
-
- buf = (duk_uint8_t *) duk_push_fixed_buffer(ctx, tot_len);
- DUK_ASSERT(buf != NULL);
- p = buf;
-
- DUK_MEMCPY((void *) p, (const void *) date_buf, (size_t) date_len);
- p += date_len;
- *p++ = (duk_uint8_t) DUK_ASC_SPACE;
-
- q = duk__log_level_strings + (entry_lev * 3);
- DUK_MEMCPY((void *) p, (const void *) q, (size_t) 3);
- p += 3;
-
- *p++ = (duk_uint8_t) DUK_ASC_SPACE;
-
- arg_str = (const duk_uint8_t *) duk_get_lstring(ctx, -2, &arg_len);
- DUK_MEMCPY((void *) p, (const void *) arg_str, (size_t) arg_len);
- p += arg_len;
-
- *p++ = (duk_uint8_t) DUK_ASC_COLON;
-
- for (i = 0; i < nargs; i++) {
- *p++ = (duk_uint8_t) DUK_ASC_SPACE;
-
- arg_str = (const duk_uint8_t *) duk_get_lstring(ctx, i, &arg_len);
- DUK_ASSERT(arg_str != NULL);
- DUK_MEMCPY((void *) p, (const void *) arg_str, (size_t) arg_len);
- p += arg_len;
- }
- DUK_ASSERT(buf + tot_len == p);
-
- /* [ arg1 ... argN this loggerLevel loggerName buffer ] */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) && defined(DUK_USE_DEBUGGER_FWD_LOGGING)
- /* Do debugger forwarding before raw() because the raw() function
- * doesn't get the log level right now.
- */
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- const char *log_buf;
- duk_size_t sz_buf;
- log_buf = (const char *) duk_get_buffer(ctx, -1, &sz_buf);
- DUK_ASSERT(log_buf != NULL);
- duk_debug_write_notify(thr, DUK_DBG_CMD_LOG);
- duk_debug_write_int(thr, (duk_int32_t) entry_lev);
- duk_debug_write_string(thr, (const char *) log_buf, sz_buf);
- duk_debug_write_eom(thr);
- }
-#endif
-
- /* Call this.raw(msg); look up through the instance allows user to override
- * the raw() function in the instance or in the prototype for maximum
- * flexibility.
- */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_RAW);
- duk_dup(ctx, -2);
- /* [ arg1 ... argN this loggerLevel loggerName buffer 'raw' buffer ] */
- duk_call_prop(ctx, -6, 1); /* this.raw(buffer) */
-
- return 0;
-}
-#line 1 "duk_bi_math.c"
-/*
- * Math built-ins
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_MATH_BUILTIN)
-
-/*
- * Use static helpers which can work with math.h functions matching
- * the following signatures. This is not portable if any of these math
- * functions is actually a macro.
- *
- * Typing here is intentionally 'double' wherever values interact with
- * the standard library APIs.
- */
-
-typedef double (*duk__one_arg_func)(double);
-typedef double (*duk__two_arg_func)(double, double);
-
-DUK_LOCAL duk_ret_t duk__math_minmax(duk_context *ctx, duk_double_t initial, duk__two_arg_func min_max) {
- duk_idx_t n = duk_get_top(ctx);
- duk_idx_t i;
- duk_double_t res = initial;
- duk_double_t t;
-
- /*
- * Note: fmax() does not match the E5 semantics. E5 requires
- * that if -any- input to Math.max() is a NaN, the result is a
- * NaN. fmax() will return a NaN only if -both- inputs are NaN.
- * Same applies to fmin().
- *
- * Note: every input value must be coerced with ToNumber(), even
- * if we know the result will be a NaN anyway: ToNumber() may have
- * side effects for which even order of evaluation matters.
- */
-
- for (i = 0; i < n; i++) {
- t = duk_to_number(ctx, i);
- if (DUK_FPCLASSIFY(t) == DUK_FP_NAN || DUK_FPCLASSIFY(res) == DUK_FP_NAN) {
- /* Note: not normalized, but duk_push_number() will normalize */
- res = (duk_double_t) DUK_DOUBLE_NAN;
- } else {
- res = (duk_double_t) min_max(res, (double) t);
- }
- }
-
- duk_push_number(ctx, res);
- return 1;
-}
-
-DUK_LOCAL double duk__fmin_fixed(double x, double y) {
- /* fmin() with args -0 and +0 is not guaranteed to return
- * -0 as Ecmascript requires.
- */
- if (x == 0 && y == 0) {
- /* XXX: what's the safest way of creating a negative zero? */
- if (DUK_SIGNBIT(x) != 0 || DUK_SIGNBIT(y) != 0) {
- return -0.0;
- } else {
- return +0.0;
- }
- }
-#ifdef DUK_USE_MATH_FMIN
- return DUK_FMIN(x, y);
-#else
- return (x < y ? x : y);
-#endif
-}
-
-DUK_LOCAL double duk__fmax_fixed(double x, double y) {
- /* fmax() with args -0 and +0 is not guaranteed to return
- * +0 as Ecmascript requires.
- */
- if (x == 0 && y == 0) {
- if (DUK_SIGNBIT(x) == 0 || DUK_SIGNBIT(y) == 0) {
- return +0.0;
- } else {
- return -0.0;
- }
- }
-#ifdef DUK_USE_MATH_FMAX
- return DUK_FMAX(x, y);
-#else
- return (x > y ? x : y);
-#endif
-}
-
-DUK_LOCAL double duk__round_fixed(double x) {
- /* Numbers half-way between integers must be rounded towards +Infinity,
- * e.g. -3.5 must be rounded to -3 (not -4). When rounded to zero, zero
- * sign must be set appropriately. E5.1 Section 15.8.2.15.
- *
- * Note that ANSI C round() is "round to nearest integer, away from zero",
- * which is incorrect for negative values. Here we make do with floor().
- */
-
- duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x);
- if (c == DUK_FP_NAN || c == DUK_FP_INFINITE || c == DUK_FP_ZERO) {
- return x;
- }
-
- /*
- * x is finite and non-zero
- *
- * -1.6 -> floor(-1.1) -> -2
- * -1.5 -> floor(-1.0) -> -1 (towards +Inf)
- * -1.4 -> floor(-0.9) -> -1
- * -0.5 -> -0.0 (special case)
- * -0.1 -> -0.0 (special case)
- * +0.1 -> +0.0 (special case)
- * +0.5 -> floor(+1.0) -> 1 (towards +Inf)
- * +1.4 -> floor(+1.9) -> 1
- * +1.5 -> floor(+2.0) -> 2 (towards +Inf)
- * +1.6 -> floor(+2.1) -> 2
- */
-
- if (x >= -0.5 && x < 0.5) {
- /* +0.5 is handled by floor, this is on purpose */
- if (x < 0.0) {
- return -0.0;
- } else {
- return +0.0;
- }
- }
-
- return DUK_FLOOR(x + 0.5);
-}
-
-DUK_LOCAL double duk__pow_fixed(double x, double y) {
- /* The ANSI C pow() semantics differ from Ecmascript.
- *
- * E.g. when x==1 and y is +/- infinite, the Ecmascript required
- * result is NaN, while at least Linux pow() returns 1.
- */
-
- duk_small_int_t cx, cy, sx;
-
- DUK_UNREF(cx);
- DUK_UNREF(sx);
- cy = (duk_small_int_t) DUK_FPCLASSIFY(y);
-
- if (cy == DUK_FP_NAN) {
- goto ret_nan;
- }
- if (DUK_FABS(x) == 1.0 && cy == DUK_FP_INFINITE) {
- goto ret_nan;
- }
-#if defined(DUK_USE_POW_NETBSD_WORKAROUND)
- /* See test-bug-netbsd-math-pow.js: NetBSD 6.0 on x86 (at least) does not
- * correctly handle some cases where x=+/-0. Specific fixes to these
- * here.
- */
- cx = (duk_small_int_t) DUK_FPCLASSIFY(x);
- if (cx == DUK_FP_ZERO && y < 0.0) {
- sx = (duk_small_int_t) DUK_SIGNBIT(x);
- if (sx == 0) {
- /* Math.pow(+0,y) should be Infinity when y<0. NetBSD pow()
- * returns -Infinity instead when y is <0 and finite. The
- * if-clause also catches y == -Infinity (which works even
- * without the fix).
- */
- return DUK_DOUBLE_INFINITY;
- } else {
- /* Math.pow(-0,y) where y<0 should be:
- * - -Infinity if y<0 and an odd integer
- * - Infinity otherwise
- * NetBSD pow() returns -Infinity for all finite y<0. The
- * if-clause also catches y == -Infinity (which works even
- * without the fix).
- */
-
- /* fmod() return value has same sign as input (negative) so
- * the result here will be in the range ]-2,0], 1 indicates
- * odd. If x is -Infinity, NaN is returned and the odd check
- * always concludes "not odd" which results in desired outcome.
- */
- double tmp = DUK_FMOD(y, 2);
- if (tmp == -1.0) {
- return -DUK_DOUBLE_INFINITY;
- } else {
- /* Not odd, or y == -Infinity */
- return DUK_DOUBLE_INFINITY;
- }
- }
- }
-#endif
- return DUK_POW(x, y);
-
- ret_nan:
- return DUK_DOUBLE_NAN;
-}
-
-/* Wrappers for calling standard math library methods. These may be required
- * on platforms where one or more of the math built-ins are defined as macros
- * or inline functions and are thus not suitable to be used as function pointers.
- */
-#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS)
-DUK_LOCAL double duk__fabs(double x) {
- return DUK_FABS(x);
-}
-DUK_LOCAL double duk__acos(double x) {
- return DUK_ACOS(x);
-}
-DUK_LOCAL double duk__asin(double x) {
- return DUK_ASIN(x);
-}
-DUK_LOCAL double duk__atan(double x) {
- return DUK_ATAN(x);
-}
-DUK_LOCAL double duk__ceil(double x) {
- return DUK_CEIL(x);
-}
-DUK_LOCAL double duk__cos(double x) {
- return DUK_COS(x);
-}
-DUK_LOCAL double duk__exp(double x) {
- return DUK_EXP(x);
-}
-DUK_LOCAL double duk__floor(double x) {
- return DUK_FLOOR(x);
-}
-DUK_LOCAL double duk__log(double x) {
- return DUK_LOG(x);
-}
-DUK_LOCAL double duk__sin(double x) {
- return DUK_SIN(x);
-}
-DUK_LOCAL double duk__sqrt(double x) {
- return DUK_SQRT(x);
-}
-DUK_LOCAL double duk__tan(double x) {
- return DUK_TAN(x);
-}
-DUK_LOCAL double duk__atan2(double x, double y) {
- return DUK_ATAN2(x, y);
-}
-#endif /* DUK_USE_AVOID_PLATFORM_FUNCPTRS */
-
-/* order must match constants in genbuiltins.py */
-DUK_LOCAL const duk__one_arg_func duk__one_arg_funcs[] = {
-#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS)
- duk__fabs,
- duk__acos,
- duk__asin,
- duk__atan,
- duk__ceil,
- duk__cos,
- duk__exp,
- duk__floor,
- duk__log,
- duk__round_fixed,
- duk__sin,
- duk__sqrt,
- duk__tan
-#else
- DUK_FABS,
- DUK_ACOS,
- DUK_ASIN,
- DUK_ATAN,
- DUK_CEIL,
- DUK_COS,
- DUK_EXP,
- DUK_FLOOR,
- DUK_LOG,
- duk__round_fixed,
- DUK_SIN,
- DUK_SQRT,
- DUK_TAN
-#endif
-};
-
-/* order must match constants in genbuiltins.py */
-DUK_LOCAL const duk__two_arg_func duk__two_arg_funcs[] = {
-#if defined(DUK_USE_AVOID_PLATFORM_FUNCPTRS)
- duk__atan2,
- duk__pow_fixed
-#else
- DUK_ATAN2,
- duk__pow_fixed
-#endif
-};
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_onearg_shared(duk_context *ctx) {
- duk_small_int_t fun_idx = duk_get_current_magic(ctx);
- duk__one_arg_func fun;
-
- DUK_ASSERT(fun_idx >= 0);
- DUK_ASSERT(fun_idx < (duk_small_int_t) (sizeof(duk__one_arg_funcs) / sizeof(duk__one_arg_func)));
- fun = duk__one_arg_funcs[fun_idx];
- duk_push_number(ctx, (duk_double_t) fun((double) duk_to_number(ctx, 0)));
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_twoarg_shared(duk_context *ctx) {
- duk_small_int_t fun_idx = duk_get_current_magic(ctx);
- duk__two_arg_func fun;
-
- DUK_ASSERT(fun_idx >= 0);
- DUK_ASSERT(fun_idx < (duk_small_int_t) (sizeof(duk__two_arg_funcs) / sizeof(duk__two_arg_func)));
- fun = duk__two_arg_funcs[fun_idx];
- duk_push_number(ctx, (duk_double_t) fun((double) duk_to_number(ctx, 0), (double) duk_to_number(ctx, 1)));
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_max(duk_context *ctx) {
- return duk__math_minmax(ctx, -DUK_DOUBLE_INFINITY, duk__fmax_fixed);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_min(duk_context *ctx) {
- return duk__math_minmax(ctx, DUK_DOUBLE_INFINITY, duk__fmin_fixed);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_random(duk_context *ctx) {
- duk_push_number(ctx, (duk_double_t) duk_util_tinyrandom_get_double((duk_hthread *) ctx));
- return 1;
-}
-
-#else /* DUK_USE_MATH_BUILTIN */
-
-/* A stubbed built-in is useful for e.g. compilation torture testing with BCC. */
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_onearg_shared(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNIMPLEMENTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_twoarg_shared(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNIMPLEMENTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_max(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNIMPLEMENTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_min(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNIMPLEMENTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_math_object_random(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNIMPLEMENTED_ERROR;
-}
-
-#endif /* DUK_USE_MATH_BUILTIN */
-#line 1 "duk_bi_number.c"
-/*
- * Number built-ins
- */
-
-/* include removed: duk_internal.h */
-
-DUK_LOCAL duk_double_t duk__push_this_number_plain(duk_context *ctx) {
- duk_hobject *h;
-
- /* Number built-in accepts a plain number or a Number object (whose
- * internal value is operated on). Other types cause TypeError.
- */
-
- duk_push_this(ctx);
- if (duk_is_number(ctx, -1)) {
- DUK_DDD(DUK_DDDPRINT("plain number value: %!T", (duk_tval *) duk_get_tval(ctx, -1)));
- goto done;
- }
- h = duk_get_hobject(ctx, -1);
- if (!h ||
- (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_NUMBER)) {
- DUK_DDD(DUK_DDDPRINT("unacceptable this value: %!T", (duk_tval *) duk_get_tval(ctx, -1)));
- DUK_ERROR_TYPE((duk_hthread *) ctx, "number expected");
- }
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- DUK_ASSERT(duk_is_number(ctx, -1));
- DUK_DDD(DUK_DDDPRINT("number object: %!T, internal value: %!T",
- (duk_tval *) duk_get_tval(ctx, -2), (duk_tval *) duk_get_tval(ctx, -1)));
- duk_remove(ctx, -2);
-
- done:
- return duk_get_number(ctx, -1);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_constructor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t nargs;
- duk_hobject *h_this;
-
- DUK_UNREF(thr);
-
- /*
- * The Number constructor uses ToNumber(arg) for number coercion
- * (coercing an undefined argument to NaN). However, if the
- * argument is not given at all, +0 must be used instead. To do
- * this, a vararg function is used.
- */
-
- nargs = duk_get_top(ctx);
- if (nargs == 0) {
- duk_push_int(ctx, 0);
- }
- duk_to_number(ctx, 0);
- duk_set_top(ctx, 1);
- DUK_ASSERT_TOP(ctx, 1);
-
- if (!duk_is_constructor_call(ctx)) {
- return 1;
- }
-
- /*
- * E5 Section 15.7.2.1 requires that the constructed object
- * must have the original Number.prototype as its internal
- * prototype. However, since Number.prototype is non-writable
- * and non-configurable, this doesn't have to be enforced here:
- * The default object (bound to 'this') is OK, though we have
- * to change its class.
- *
- * Internal value set to ToNumber(arg) or +0; if no arg given,
- * ToNumber(undefined) = NaN, so special treatment is needed
- * (above). String internal value is immutable.
- */
-
- /* XXX: helper */
- duk_push_this(ctx);
- h_this = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h_this != NULL);
- DUK_HOBJECT_SET_CLASS_NUMBER(h_this, DUK_HOBJECT_CLASS_NUMBER);
-
- DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_this) == thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE]);
- DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_this) == DUK_HOBJECT_CLASS_NUMBER);
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h_this));
-
- duk_dup(ctx, 0); /* -> [ val obj val ] */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE);
- return 0; /* no return value -> don't replace created value */
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_value_of(duk_context *ctx) {
- (void) duk__push_this_number_plain(ctx);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_string(duk_context *ctx) {
- duk_small_int_t radix;
- duk_small_uint_t n2s_flags;
-
- (void) duk__push_this_number_plain(ctx);
- if (duk_is_undefined(ctx, 0)) {
- radix = 10;
- } else {
- radix = (duk_small_int_t) duk_to_int_check_range(ctx, 0, 2, 36);
- }
- DUK_DDD(DUK_DDDPRINT("radix=%ld", (long) radix));
-
- n2s_flags = 0;
-
- duk_numconv_stringify(ctx,
- radix /*radix*/,
- 0 /*digits*/,
- n2s_flags /*flags*/);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_locale_string(duk_context *ctx) {
- /* XXX: just use toString() for now; permitted although not recommended.
- * nargs==1, so radix is passed to toString().
- */
- return duk_bi_number_prototype_to_string(ctx);
-}
-
-/*
- * toFixed(), toExponential(), toPrecision()
- */
-
-/* XXX: shared helper for toFixed(), toExponential(), toPrecision()? */
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_fixed(duk_context *ctx) {
- duk_small_int_t frac_digits;
- duk_double_t d;
- duk_small_int_t c;
- duk_small_uint_t n2s_flags;
-
- frac_digits = (duk_small_int_t) duk_to_int_check_range(ctx, 0, 0, 20);
- d = duk__push_this_number_plain(ctx);
-
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) {
- goto use_to_string;
- }
-
- if (d >= 1.0e21 || d <= -1.0e21) {
- goto use_to_string;
- }
-
- n2s_flags = DUK_N2S_FLAG_FIXED_FORMAT |
- DUK_N2S_FLAG_FRACTION_DIGITS;
-
- duk_numconv_stringify(ctx,
- 10 /*radix*/,
- frac_digits /*digits*/,
- n2s_flags /*flags*/);
- return 1;
-
- use_to_string:
- DUK_ASSERT_TOP(ctx, 2);
- duk_to_string(ctx, -1);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_exponential(duk_context *ctx) {
- duk_bool_t frac_undefined;
- duk_small_int_t frac_digits;
- duk_double_t d;
- duk_small_int_t c;
- duk_small_uint_t n2s_flags;
-
- d = duk__push_this_number_plain(ctx);
-
- frac_undefined = duk_is_undefined(ctx, 0);
- duk_to_int(ctx, 0); /* for side effects */
-
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) {
- goto use_to_string;
- }
-
- frac_digits = (duk_small_int_t) duk_to_int_check_range(ctx, 0, 0, 20);
-
- n2s_flags = DUK_N2S_FLAG_FORCE_EXP |
- (frac_undefined ? 0 : DUK_N2S_FLAG_FIXED_FORMAT);
-
- duk_numconv_stringify(ctx,
- 10 /*radix*/,
- frac_digits + 1 /*leading digit + fractions*/,
- n2s_flags /*flags*/);
- return 1;
-
- use_to_string:
- DUK_ASSERT_TOP(ctx, 2);
- duk_to_string(ctx, -1);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_number_prototype_to_precision(duk_context *ctx) {
- /* The specification has quite awkward order of coercion and
- * checks for toPrecision(). The operations below are a bit
- * reordered, within constraints of observable side effects.
- */
-
- duk_double_t d;
- duk_small_int_t prec;
- duk_small_int_t c;
- duk_small_uint_t n2s_flags;
-
- DUK_ASSERT_TOP(ctx, 1);
-
- d = duk__push_this_number_plain(ctx);
- if (duk_is_undefined(ctx, 0)) {
- goto use_to_string;
- }
- DUK_ASSERT_TOP(ctx, 2);
-
- duk_to_int(ctx, 0); /* for side effects */
-
- c = (duk_small_int_t) DUK_FPCLASSIFY(d);
- if (c == DUK_FP_NAN || c == DUK_FP_INFINITE) {
- goto use_to_string;
- }
-
- prec = (duk_small_int_t) duk_to_int_check_range(ctx, 0, 1, 21);
-
- n2s_flags = DUK_N2S_FLAG_FIXED_FORMAT |
- DUK_N2S_FLAG_NO_ZERO_PAD;
-
- duk_numconv_stringify(ctx,
- 10 /*radix*/,
- prec /*digits*/,
- n2s_flags /*flags*/);
- return 1;
-
- use_to_string:
- /* Used when precision is undefined; also used for NaN (-> "NaN"),
- * and +/- infinity (-> "Infinity", "-Infinity").
- */
-
- DUK_ASSERT_TOP(ctx, 2);
- duk_to_string(ctx, -1);
- return 1;
-}
-#line 1 "duk_bi_object.c"
-/*
- * Object built-ins
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor(duk_context *ctx) {
- if (!duk_is_constructor_call(ctx) &&
- !duk_is_null_or_undefined(ctx, 0)) {
- duk_to_object(ctx, 0);
- return 1;
- }
-
- if (duk_is_object(ctx, 0)) {
- return 1;
- }
-
- /* Pointer and buffer primitive values are treated like other
- * primitives values which have a fully fledged object counterpart:
- * promote to an object value. Lightfuncs are coerced with
- * ToObject() even they could also be returned as is.
- */
- if (duk_check_type_mask(ctx, 0, DUK_TYPE_MASK_STRING |
- DUK_TYPE_MASK_BOOLEAN |
- DUK_TYPE_MASK_NUMBER |
- DUK_TYPE_MASK_POINTER |
- DUK_TYPE_MASK_BUFFER |
- DUK_TYPE_MASK_LIGHTFUNC)) {
- duk_to_object(ctx, 0);
- return 1;
- }
-
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- DUK_BIDX_OBJECT_PROTOTYPE);
- return 1;
-}
-
-/* Shared helper to implement Object.getPrototypeOf and the ES6
- * Object.prototype.__proto__ getter.
- *
- * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-get-object.prototype.__proto__
- */
-DUK_INTERNAL duk_ret_t duk_bi_object_getprototype_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
- duk_hobject *proto;
-
- DUK_UNREF(thr);
-
- /* magic: 0=getter call, 1=Object.getPrototypeOf */
- if (duk_get_current_magic(ctx) == 0) {
- duk_push_this_coercible_to_object(ctx);
- duk_insert(ctx, 0);
- }
-
- h = duk_require_hobject_or_lfunc(ctx, 0);
- /* h is NULL for lightfunc */
-
- /* XXX: should the API call handle this directly, i.e. attempt
- * to duk_push_hobject(ctx, null) would push a null instead?
- * (On the other hand 'undefined' would be just as logical, but
- * not wanted here.)
- */
-
- if (h == NULL) {
- duk_push_hobject_bidx(ctx, DUK_BIDX_FUNCTION_PROTOTYPE);
- } else {
- proto = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h);
- if (proto) {
- duk_push_hobject(ctx, proto);
- } else {
- duk_push_null(ctx);
- }
- }
- return 1;
-}
-
-/* Shared helper to implement ES6 Object.setPrototypeOf and
- * Object.prototype.__proto__ setter.
- *
- * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-get-object.prototype.__proto__
- * http://www.ecma-international.org/ecma-262/6.0/index.html#sec-object.setprototypeof
- */
-DUK_INTERNAL duk_ret_t duk_bi_object_setprototype_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h_obj;
- duk_hobject *h_new_proto;
- duk_hobject *h_curr;
- duk_ret_t ret_success = 1; /* retval for success path */
-
- /* Preliminaries for __proto__ and setPrototypeOf (E6 19.1.2.18 steps 1-4);
- * magic: 0=setter call, 1=Object.setPrototypeOf
- */
- if (duk_get_current_magic(ctx) == 0) {
- duk_push_this_check_object_coercible(ctx);
- duk_insert(ctx, 0);
- if (!duk_check_type_mask(ctx, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT)) {
- return 0;
- }
-
- /* __proto__ setter returns 'undefined' on success unlike the
- * setPrototypeOf() call which returns the target object.
- */
- ret_success = 0;
- } else {
- duk_require_object_coercible(ctx, 0);
- duk_require_type_mask(ctx, 1, DUK_TYPE_MASK_NULL | DUK_TYPE_MASK_OBJECT);
- }
-
- h_new_proto = duk_get_hobject(ctx, 1);
- /* h_new_proto may be NULL */
- if (duk_is_lightfunc(ctx, 0)) {
- if (h_new_proto == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]) {
- goto skip;
- }
- goto fail_nonextensible;
- }
- h_obj = duk_get_hobject(ctx, 0);
- if (!h_obj) {
- goto skip;
- }
- DUK_ASSERT(h_obj != NULL);
-
- /* [[SetPrototypeOf]] standard behavior, E6 9.1.2 */
- /* TODO: implement Proxy object support here */
-
- if (h_new_proto == DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_obj)) {
- goto skip;
- }
- if (!DUK_HOBJECT_HAS_EXTENSIBLE(h_obj)) {
- goto fail_nonextensible;
- }
- for (h_curr = h_new_proto; h_curr != NULL; h_curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_curr)) {
- /* Loop prevention */
- if (h_curr == h_obj) {
- goto fail_loop;
- }
- }
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h_obj, h_new_proto);
- /* fall thru */
-
- skip:
- duk_set_top(ctx, 1);
- return ret_success;
-
- fail_nonextensible:
- fail_loop:
- return DUK_RET_TYPE_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_get_own_property_descriptor(duk_context *ctx) {
- /* XXX: no need for indirect call */
- return duk_hobject_object_get_own_property_descriptor(ctx);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_create(duk_context *ctx) {
- duk_tval *tv;
- duk_hobject *proto = NULL;
-
- DUK_ASSERT_TOP(ctx, 2);
-
- tv = duk_get_tval(ctx, 0);
- DUK_ASSERT(tv != NULL);
- if (DUK_TVAL_IS_NULL(tv)) {
- ;
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- proto = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(proto != NULL);
- } else {
- return DUK_RET_TYPE_ERROR;
- }
-
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- proto);
-
- if (!duk_is_undefined(ctx, 1)) {
- /* [ O Properties obj ] */
-
- duk_replace(ctx, 0);
-
- /* [ obj Properties ] */
-
- /* Just call the "original" Object.defineProperties() to
- * finish up.
- */
-
- return duk_bi_object_constructor_define_properties(ctx);
- }
-
- /* [ O Properties obj ] */
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_define_property(duk_context *ctx) {
- duk_hobject *obj;
- duk_hstring *key;
- duk_hobject *get;
- duk_hobject *set;
- duk_idx_t idx_value;
- duk_uint_t defprop_flags;
-
- DUK_ASSERT(ctx != NULL);
-
- DUK_DDD(DUK_DDDPRINT("Object.defineProperty(): ctx=%p obj=%!T key=%!T desc=%!T",
- (void *) ctx,
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (duk_tval *) duk_get_tval(ctx, 2)));
-
- /* [ obj key desc ] */
-
- /* Lightfuncs are currently supported by coercing to a temporary
- * Function object; changes will be allowed (the coerced value is
- * extensible) but will be lost.
- */
- obj = duk_require_hobject_or_lfunc_coerce(ctx, 0);
- (void) duk_to_string(ctx, 1);
- key = duk_require_hstring(ctx, 1);
- (void) duk_require_hobject(ctx, 2);
-
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(duk_get_hobject(ctx, 2) != NULL);
-
- /*
- * Validate and convert argument property descriptor (an Ecmascript
- * object) into a set of defprop_flags and possibly property value,
- * getter, and/or setter values on the value stack.
- *
- * Lightfunc set/get values are coerced to full Functions.
- */
-
- duk_hobject_prepare_property_descriptor(ctx,
- 2 /*idx_desc*/,
- &defprop_flags,
- &idx_value,
- &get,
- &set);
-
- /*
- * Use Object.defineProperty() helper for the actual operation.
- */
-
- duk_hobject_define_property_helper(ctx,
- defprop_flags,
- obj,
- key,
- idx_value,
- get,
- set);
-
- /* Ignore the normalize/validate helper outputs on the value stack,
- * they're popped automatically.
- */
-
- /*
- * Return target object.
- */
-
- duk_push_hobject(ctx, obj);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_define_properties(duk_context *ctx) {
- duk_small_uint_t pass;
- duk_uint_t defprop_flags;
- duk_hobject *obj;
- duk_idx_t idx_value;
- duk_hobject *get;
- duk_hobject *set;
-
- /* Lightfunc handling by ToObject() coercion. */
- obj = duk_require_hobject_or_lfunc_coerce(ctx, 0); /* target */
- DUK_ASSERT(obj != NULL);
-
- duk_to_object(ctx, 1); /* properties object */
-
- DUK_DDD(DUK_DDDPRINT("target=%!iT, properties=%!iT",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1)));
-
- /*
- * Two pass approach to processing the property descriptors.
- * On first pass validate and normalize all descriptors before
- * any changes are made to the target object. On second pass
- * make the actual modifications to the target object.
- *
- * Right now we'll just use the same normalize/validate helper
- * on both passes, ignoring its outputs on the first pass.
- */
-
- for (pass = 0; pass < 2; pass++) {
- duk_set_top(ctx, 2); /* -> [ hobject props ] */
- duk_enum(ctx, 1, DUK_ENUM_OWN_PROPERTIES_ONLY /*enum_flags*/);
-
- for (;;) {
- duk_hstring *key;
-
- /* [ hobject props enum(props) ] */
-
- duk_set_top(ctx, 3);
-
- if (!duk_next(ctx, 2, 1 /*get_value*/)) {
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("-> key=%!iT, desc=%!iT",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [ hobject props enum(props) key desc ] */
-
- duk_hobject_prepare_property_descriptor(ctx,
- 4 /*idx_desc*/,
- &defprop_flags,
- &idx_value,
- &get,
- &set);
-
- /* [ hobject props enum(props) key desc value? getter? setter? ] */
-
- if (pass == 0) {
- continue;
- }
-
- key = duk_get_hstring(ctx, 3);
- DUK_ASSERT(key != NULL);
-
- duk_hobject_define_property_helper(ctx,
- defprop_flags,
- obj,
- key,
- idx_value,
- get,
- set);
- }
- }
-
- /*
- * Return target object
- */
-
- duk_dup(ctx, 0);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_seal_freeze_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
- duk_bool_t is_freeze;
-
- h = duk_require_hobject_or_lfunc(ctx, 0);
- if (!h) {
- /* Lightfunc, always success. */
- return 1;
- }
-
- is_freeze = (duk_bool_t) duk_get_current_magic(ctx);
- duk_hobject_object_seal_freeze_helper(thr, h, is_freeze);
-
- /* Sealed and frozen objects cannot gain any more properties,
- * so this is a good time to compact them.
- */
- duk_hobject_compact_props(thr, h);
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_prevent_extensions(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h;
-
- h = duk_require_hobject_or_lfunc(ctx, 0);
- if (!h) {
- /* Lightfunc, always success. */
- return 1;
- }
- DUK_ASSERT(h != NULL);
-
- DUK_HOBJECT_CLEAR_EXTENSIBLE(h);
-
- /* A non-extensible object cannot gain any more properties,
- * so this is a good time to compact.
- */
- duk_hobject_compact_props(thr, h);
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_is_sealed_frozen_shared(duk_context *ctx) {
- duk_hobject *h;
- duk_bool_t is_frozen;
- duk_bool_t rc;
-
- h = duk_require_hobject_or_lfunc(ctx, 0);
- if (!h) {
- duk_push_true(ctx); /* frozen and sealed */
- } else {
- is_frozen = duk_get_current_magic(ctx);
- rc = duk_hobject_object_is_sealed_frozen_helper((duk_hthread *) ctx, h, is_frozen /*is_frozen*/);
- duk_push_boolean(ctx, rc);
- }
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_is_extensible(duk_context *ctx) {
- duk_hobject *h;
-
- h = duk_require_hobject_or_lfunc(ctx, 0);
- if (!h) {
- duk_push_false(ctx);
- } else {
- duk_push_boolean(ctx, DUK_HOBJECT_HAS_EXTENSIBLE(h));
- }
- return 1;
-}
-
-/* Shared helper for Object.getOwnPropertyNames() and Object.keys().
- * Magic: 0=getOwnPropertyNames, 1=Object.keys.
- */
-DUK_INTERNAL duk_ret_t duk_bi_object_constructor_keys_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
-#if defined(DUK_USE_ES6_PROXY)
- duk_hobject *h_proxy_target;
- duk_hobject *h_proxy_handler;
- duk_hobject *h_trap_result;
- duk_uarridx_t i, len, idx;
-#endif
- duk_small_uint_t enum_flags;
-
- DUK_ASSERT_TOP(ctx, 1);
- DUK_UNREF(thr);
-
- obj = duk_require_hobject_or_lfunc_coerce(ctx, 0);
- DUK_ASSERT(obj != NULL);
- DUK_UNREF(obj);
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_LIKELY(!duk_hobject_proxy_check(thr,
- obj,
- &h_proxy_target,
- &h_proxy_handler))) {
- goto skip_proxy;
- }
-
- duk_push_hobject(ctx, h_proxy_handler);
- if (!duk_get_prop_stridx(ctx, -1, DUK_STRIDX_OWN_KEYS)) {
- /* Careful with reachability here: don't pop 'obj' before pushing
- * proxy target.
- */
- DUK_DDD(DUK_DDDPRINT("no ownKeys trap, get keys of target instead"));
- duk_pop_2(ctx);
- duk_push_hobject(ctx, h_proxy_target);
- duk_replace(ctx, 0);
- DUK_ASSERT_TOP(ctx, 1);
- goto skip_proxy;
- }
-
- /* [ obj handler trap ] */
- duk_insert(ctx, -2);
- duk_push_hobject(ctx, h_proxy_target); /* -> [ obj trap handler target ] */
- duk_call_method(ctx, 1 /*nargs*/); /* -> [ obj trap_result ] */
- h_trap_result = duk_require_hobject(ctx, -1);
- DUK_UNREF(h_trap_result);
-
- len = (duk_uarridx_t) duk_get_length(ctx, -1);
- idx = 0;
- duk_push_array(ctx);
- for (i = 0; i < len; i++) {
- /* [ obj trap_result res_arr ] */
- if (duk_get_prop_index(ctx, -2, i) && duk_is_string(ctx, -1)) {
- /* XXX: for Object.keys() we should check enumerability of key */
- /* [ obj trap_result res_arr propname ] */
- duk_put_prop_index(ctx, -2, idx);
- idx++;
- } else {
- duk_pop(ctx);
- }
- }
-
- /* XXX: missing trap result validation for non-configurable target keys
- * (must be present), for non-extensible target all target keys must be
- * present and no extra keys can be present.
- * http://www.ecma-international.org/ecma-262/6.0/#sec-proxy-object-internal-methods-and-internal-slots-ownpropertykeys
- */
-
- /* XXX: for Object.keys() the [[OwnPropertyKeys]] result (trap result)
- * should be filtered so that only enumerable keys remain. Enumerability
- * should be checked with [[GetOwnProperty]] on the original object
- * (i.e., the proxy in this case). If the proxy has a getOwnPropertyDescriptor
- * trap, it should be triggered for every property. If the proxy doesn't have
- * the trap, enumerability should be checked against the target object instead.
- * We don't do any of this now, so Object.keys() and Object.getOwnPropertyNames()
- * return the same result now for proxy traps. We still do clean up the trap
- * result, so that Object.keys() and Object.getOwnPropertyNames() will return a
- * clean array of strings without gaps.
- */
- return 1;
-
- skip_proxy:
-#endif /* DUK_USE_ES6_PROXY */
-
- DUK_ASSERT_TOP(ctx, 1);
-
- if (duk_get_current_magic(ctx)) {
- /* Object.keys */
- enum_flags = DUK_ENUM_OWN_PROPERTIES_ONLY |
- DUK_ENUM_NO_PROXY_BEHAVIOR;
- } else {
- /* Object.getOwnPropertyNames */
- enum_flags = DUK_ENUM_INCLUDE_NONENUMERABLE |
- DUK_ENUM_OWN_PROPERTIES_ONLY |
- DUK_ENUM_NO_PROXY_BEHAVIOR;
- }
-
- return duk_hobject_get_enumerated_keys(ctx, enum_flags);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_string(duk_context *ctx) {
- duk_push_this(ctx);
- duk_to_object_class_string_top(ctx);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_to_locale_string(duk_context *ctx) {
- DUK_ASSERT_TOP(ctx, 0);
- (void) duk_push_this_coercible_to_object(ctx);
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_TO_STRING);
- if (!duk_is_callable(ctx, 1)) {
- return DUK_RET_TYPE_ERROR;
- }
- duk_dup(ctx, 0); /* -> [ O toString O ] */
- duk_call_method(ctx, 0); /* XXX: call method tail call? */
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_value_of(duk_context *ctx) {
- (void) duk_push_this_coercible_to_object(ctx);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_is_prototype_of(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h_v;
- duk_hobject *h_obj;
-
- DUK_ASSERT_TOP(ctx, 1);
-
- h_v = duk_get_hobject(ctx, 0);
- if (!h_v) {
- duk_push_false(ctx); /* XXX: tail call: return duk_push_false(ctx) */
- return 1;
- }
-
- h_obj = duk_push_this_coercible_to_object(ctx);
- DUK_ASSERT(h_obj != NULL);
-
- /* E5.1 Section 15.2.4.6, step 3.a, lookup proto once before compare.
- * Prototype loops should cause an error to be thrown.
- */
- duk_push_boolean(ctx, duk_hobject_prototype_chain_contains(thr, DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h_v), h_obj, 0 /*ignore_loop*/));
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_has_own_property(duk_context *ctx) {
- return duk_hobject_object_ownprop_helper(ctx, 0 /*required_desc_flags*/);
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_object_prototype_property_is_enumerable(duk_context *ctx) {
- return duk_hobject_object_ownprop_helper(ctx, DUK_PROPDESC_FLAG_ENUMERABLE /*required_desc_flags*/);
-}
-#line 1 "duk_bi_pointer.c"
-/*
- * Pointer built-ins
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Constructor
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_pointer_constructor(duk_context *ctx) {
- /* XXX: this behavior is quite useless now; it would be nice to be able
- * to create pointer values from e.g. numbers or strings. Numbers are
- * problematic on 64-bit platforms though. Hex encoded strings?
- */
- if (duk_get_top(ctx) == 0) {
- duk_push_pointer(ctx, NULL);
- } else {
- duk_to_pointer(ctx, 0);
- }
- DUK_ASSERT(duk_is_pointer(ctx, 0));
- duk_set_top(ctx, 1);
-
- if (duk_is_constructor_call(ctx)) {
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_POINTER),
- DUK_BIDX_POINTER_PROTOTYPE);
-
- /* Pointer object internal value is immutable */
- duk_dup(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE);
- }
- /* Note: unbalanced stack on purpose */
-
- return 1;
-}
-
-/*
- * toString(), valueOf()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_pointer_prototype_tostring_shared(duk_context *ctx) {
- duk_tval *tv;
- duk_small_int_t to_string = duk_get_current_magic(ctx);
-
- duk_push_this(ctx);
- tv = duk_require_tval(ctx, -1);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_POINTER(tv)) {
- /* nop */
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- /* Must be a "pointer object", i.e. class "Pointer" */
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_POINTER) {
- goto type_error;
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- } else {
- goto type_error;
- }
-
- if (to_string) {
- duk_to_string(ctx, -1);
- }
- return 1;
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-#line 1 "duk_bi_proxy.c"
-/*
- * Proxy built-in (ES6)
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_ES6_PROXY)
-DUK_INTERNAL duk_ret_t duk_bi_proxy_constructor(duk_context *ctx) {
- duk_hobject *h_target;
- duk_hobject *h_handler;
-
- if (!duk_is_constructor_call(ctx)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* Reject a proxy object as the target because it would need
- * special handler in property lookups. (ES6 has no such restriction)
- */
- h_target = duk_require_hobject_or_lfunc_coerce(ctx, 0);
- DUK_ASSERT(h_target != NULL);
- if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h_target)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* Reject a proxy object as the handler because it would cause
- * potentially unbounded recursion. (ES6 has no such restriction)
- */
- h_handler = duk_require_hobject_or_lfunc_coerce(ctx, 1);
- DUK_ASSERT(h_handler != NULL);
- if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h_handler)) {
- return DUK_RET_TYPE_ERROR;
- }
-
- /* XXX: the returned value is exotic in ES6, but we use a
- * simple object here with no prototype. Without a prototype,
- * [[DefaultValue]] coercion fails which is abit confusing.
- * No callable check/handling in the current Proxy subset.
- */
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- NULL);
- DUK_ASSERT_TOP(ctx, 3);
-
- /* Make _Target and _Handler non-configurable and non-writable.
- * They can still be forcibly changed by C code (both user and
- * Duktape internal), but not by Ecmascript code.
- */
-
- /* Proxy target */
- duk_dup(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE);
-
- /* Proxy handler */
- duk_dup(ctx, 1);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_HANDLER, DUK_PROPDESC_FLAGS_NONE);
-
- return 1; /* replacement handler */
-}
-#else /* DUK_USE_ES6_PROXY */
-DUK_INTERNAL duk_ret_t duk_bi_proxy_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_ES6_PROXY */
-#line 1 "duk_bi_regexp.c"
-/*
- * RegExp built-ins
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-
-DUK_LOCAL void duk__get_this_regexp(duk_context *ctx) {
- duk_hobject *h;
-
- duk_push_this(ctx);
- h = duk_require_hobject_with_class(ctx, -1, DUK_HOBJECT_CLASS_REGEXP);
- DUK_ASSERT(h != NULL);
- DUK_UNREF(h);
- duk_insert(ctx, 0); /* prepend regexp to valstack 0 index */
-}
-
-/* XXX: much to improve (code size) */
-DUK_INTERNAL duk_ret_t duk_bi_regexp_constructor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *h_pattern;
-
- DUK_ASSERT_TOP(ctx, 2);
- h_pattern = duk_get_hobject(ctx, 0);
-
- if (!duk_is_constructor_call(ctx) &&
- h_pattern != NULL &&
- DUK_HOBJECT_GET_CLASS_NUMBER(h_pattern) == DUK_HOBJECT_CLASS_REGEXP &&
- duk_is_undefined(ctx, 1)) {
- /* Called as a function, pattern has [[Class]] "RegExp" and
- * flags is undefined -> return object as is.
- */
- duk_dup(ctx, 0);
- return 1;
- }
-
- /* Else functionality is identical for function call and constructor
- * call.
- */
-
- if (h_pattern != NULL &&
- DUK_HOBJECT_GET_CLASS_NUMBER(h_pattern) == DUK_HOBJECT_CLASS_REGEXP) {
- if (duk_is_undefined(ctx, 1)) {
- duk_bool_t flag_g, flag_i, flag_m;
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_SOURCE);
- flag_g = duk_get_prop_stridx_boolean(ctx, 0, DUK_STRIDX_GLOBAL, NULL);
- flag_i = duk_get_prop_stridx_boolean(ctx, 0, DUK_STRIDX_IGNORE_CASE, NULL);
- flag_m = duk_get_prop_stridx_boolean(ctx, 0, DUK_STRIDX_MULTILINE, NULL);
-
- duk_push_sprintf(ctx, "%s%s%s",
- (const char *) (flag_g ? "g" : ""),
- (const char *) (flag_i ? "i" : ""),
- (const char *) (flag_m ? "m" : ""));
-
- /* [ ... pattern flags ] */
- } else {
- return DUK_RET_TYPE_ERROR;
- }
- } else {
- if (duk_is_undefined(ctx, 0)) {
- duk_push_string(ctx, "");
- } else {
- duk_dup(ctx, 0);
- duk_to_string(ctx, -1);
- }
- if (duk_is_undefined(ctx, 1)) {
- duk_push_string(ctx, "");
- } else {
- duk_dup(ctx, 1);
- duk_to_string(ctx, -1);
- }
-
- /* [ ... pattern flags ] */
- }
-
- DUK_DDD(DUK_DDDPRINT("RegExp constructor/function call, pattern=%!T, flags=%!T",
- (duk_tval *) duk_get_tval(ctx, -2), (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [ ... pattern flags ] */
-
- duk_regexp_compile(thr);
-
- /* [ ... bytecode escaped_source ] */
-
- duk_regexp_create_instance(thr);
-
- /* [ ... RegExp ] */
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_exec(duk_context *ctx) {
- duk__get_this_regexp(ctx);
-
- /* [ regexp input ] */
-
- duk_regexp_match((duk_hthread *) ctx);
-
- /* [ result ] */
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_test(duk_context *ctx) {
- duk__get_this_regexp(ctx);
-
- /* [ regexp input ] */
-
- /* result object is created and discarded; wasteful but saves code space */
- duk_regexp_match((duk_hthread *) ctx);
-
- /* [ result ] */
-
- duk_push_boolean(ctx, (duk_is_null(ctx, -1) ? 0 : 1));
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_to_string(duk_context *ctx) {
- duk_hstring *h_bc;
- duk_small_int_t re_flags;
-
-#if 0
- /* A little tricky string approach to provide the flags string.
- * This depends on the specific flag values in duk_regexp.h,
- * which needs to be asserted for. In practice this doesn't
- * produce more compact code than the easier approach in use.
- */
-
- const char *flag_strings = "gim\0gi\0gm\0g\0";
- duk_uint8_t flag_offsets[8] = {
- (duk_uint8_t) 3, /* flags: "" */
- (duk_uint8_t) 10, /* flags: "g" */
- (duk_uint8_t) 5, /* flags: "i" */
- (duk_uint8_t) 4, /* flags: "gi" */
- (duk_uint8_t) 2, /* flags: "m" */
- (duk_uint8_t) 7, /* flags: "gm" */
- (duk_uint8_t) 1, /* flags: "im" */
- (duk_uint8_t) 0, /* flags: "gim" */
- };
- DUK_ASSERT(DUK_RE_FLAG_GLOBAL == 1);
- DUK_ASSERT(DUK_RE_FLAG_IGNORE_CASE == 2);
- DUK_ASSERT(DUK_RE_FLAG_MULTILINE == 4);
-#endif
-
- duk__get_this_regexp(ctx);
-
- /* [ regexp ] */
-
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_SOURCE);
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_INT_BYTECODE);
- h_bc = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_bc != NULL);
- DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(h_bc) >= 1);
- DUK_ASSERT(DUK_HSTRING_GET_CHARLEN(h_bc) >= 1);
- DUK_ASSERT(DUK_HSTRING_GET_DATA(h_bc)[0] < 0x80);
- re_flags = (duk_small_int_t) DUK_HSTRING_GET_DATA(h_bc)[0];
-
- /* [ regexp source bytecode ] */
-
-#if 1
- /* This is a cleaner approach and also produces smaller code than
- * the other alternative. Use duk_require_string() for format
- * safety (although the source property should always exist).
- */
- duk_push_sprintf(ctx, "/%s/%s%s%s",
- (const char *) duk_require_string(ctx, -2), /* require to be safe */
- (re_flags & DUK_RE_FLAG_GLOBAL) ? "g" : "",
- (re_flags & DUK_RE_FLAG_IGNORE_CASE) ? "i" : "",
- (re_flags & DUK_RE_FLAG_MULTILINE) ? "m" : "");
-#else
- /* This should not be necessary because no-one should tamper with the
- * regexp bytecode, but is prudent to avoid potential segfaults if that
- * were to happen for some reason.
- */
- re_flags &= 0x07;
- DUK_ASSERT(re_flags >= 0 && re_flags <= 7); /* three flags */
- duk_push_sprintf(ctx, "/%s/%s",
- (const char *) duk_require_string(ctx, -2),
- (const char *) (flag_strings + flag_offsets[re_flags]));
-#endif
-
- return 1;
-}
-
-#else /* DUK_USE_REGEXP_SUPPORT */
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_constructor(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_exec(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_test(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_regexp_prototype_to_string(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-
-#endif /* DUK_USE_REGEXP_SUPPORT */
-#line 1 "duk_bi_string.c"
-/*
- * String built-ins
- */
-
-/* XXX: There are several limitations in the current implementation for
- * strings with >= 0x80000000UL characters. In some cases one would need
- * to be able to represent the range [-0xffffffff,0xffffffff] and so on.
- * Generally character and byte length are assumed to fit into signed 32
- * bits (< 0x80000000UL). Places with issues are not marked explicitly
- * below in all cases, look for signed type usage (duk_int_t etc) for
- * offsets/lengths.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Constructor
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_constructor(duk_context *ctx) {
- /* String constructor needs to distinguish between an argument not given at all
- * vs. given as 'undefined'. We're a vararg function to handle this properly.
- */
-
- if (duk_get_top(ctx) == 0) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
- } else {
- duk_to_string(ctx, 0);
- }
- DUK_ASSERT(duk_is_string(ctx, 0));
- duk_set_top(ctx, 1);
-
- if (duk_is_constructor_call(ctx)) {
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_STRING),
- DUK_BIDX_STRING_PROTOTYPE);
-
- /* String object internal value is immutable */
- duk_dup(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VALUE, DUK_PROPDESC_FLAGS_NONE);
- }
- /* Note: unbalanced stack on purpose */
-
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_string_constructor_from_char_code(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
- duk_idx_t i, n;
- duk_ucodepoint_t cp;
-
- /* XXX: It would be nice to build the string directly but ToUint16()
- * coercion is needed so a generic helper would not be very
- * helpful (perhaps coerce the value stack first here and then
- * build a string from a duk_tval number sequence in one go?).
- */
-
- n = duk_get_top(ctx);
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(thr, bw, n); /* initial estimate for ASCII only codepoints */
-
- for (i = 0; i < n; i++) {
- /* XXX: could improve bufwriter handling to write multiple codepoints
- * with one ensure call but the relative benefit would be quite small.
- */
-
-#if defined(DUK_USE_NONSTD_STRING_FROMCHARCODE_32BIT)
- /* ToUint16() coercion is mandatory in the E5.1 specification, but
- * this non-compliant behavior makes more sense because we support
- * non-BMP codepoints. Don't use CESU-8 because that'd create
- * surrogate pairs.
- */
-
- cp = (duk_ucodepoint_t) duk_to_uint32(ctx, i);
- DUK_BW_WRITE_ENSURE_XUTF8(thr, bw, cp);
-#else
- cp = (duk_ucodepoint_t) duk_to_uint32(ctx, i);
- DUK_BW_WRITE_ENSURE_CESU8(thr, bw, cp);
-#endif
- }
-
- DUK_BW_COMPACT(thr, bw);
- duk_to_string(ctx, -1);
- return 1;
-}
-
-/*
- * toString(), valueOf()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_to_string(duk_context *ctx) {
- duk_tval *tv;
-
- duk_push_this(ctx);
- tv = duk_require_tval(ctx, -1);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_IS_STRING(tv)) {
- /* return as is */
- return 1;
- } else if (DUK_TVAL_IS_OBJECT(tv)) {
- duk_hobject *h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
-
- /* Must be a "string object", i.e. class "String" */
- if (DUK_HOBJECT_GET_CLASS_NUMBER(h) != DUK_HOBJECT_CLASS_STRING) {
- goto type_error;
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VALUE);
- DUK_ASSERT(duk_is_string(ctx, -1));
-
- return 1;
- } else {
- goto type_error;
- }
-
- /* never here, but fall through */
-
- type_error:
- return DUK_RET_TYPE_ERROR;
-}
-
-/*
- * Character and charcode access
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_char_at(duk_context *ctx) {
- duk_int_t pos;
-
- /* XXX: faster implementation */
-
- (void) duk_push_this_coercible_to_string(ctx);
- pos = duk_to_int(ctx, 0);
- duk_substring(ctx, -1, pos, pos + 1);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_char_code_at(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_int_t pos;
- duk_hstring *h;
- duk_bool_t clamped;
-
- /* XXX: faster implementation */
-
- DUK_DDD(DUK_DDDPRINT("arg=%!T", (duk_tval *) duk_get_tval(ctx, 0)));
-
- h = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h != NULL);
-
- pos = duk_to_int_clamped_raw(ctx,
- 0 /*index*/,
- 0 /*min(incl)*/,
- DUK_HSTRING_GET_CHARLEN(h) - 1 /*max(incl)*/,
- &clamped /*out_clamped*/);
- if (clamped) {
- duk_push_number(ctx, DUK_DOUBLE_NAN);
- return 1;
- }
-
- duk_push_u32(ctx, (duk_uint32_t) duk_hstring_char_code_at_raw(thr, h, pos));
- return 1;
-}
-
-/*
- * substring(), substr(), slice()
- */
-
-/* XXX: any chance of merging these three similar but still slightly
- * different algorithms so that footprint would be reduced?
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_substring(duk_context *ctx) {
- duk_hstring *h;
- duk_int_t start_pos, end_pos;
- duk_int_t len;
-
- h = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h != NULL);
- len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h);
-
- /* [ start end str ] */
-
- start_pos = duk_to_int_clamped(ctx, 0, 0, len);
- if (duk_is_undefined(ctx, 1)) {
- end_pos = len;
- } else {
- end_pos = duk_to_int_clamped(ctx, 1, 0, len);
- }
- DUK_ASSERT(start_pos >= 0 && start_pos <= len);
- DUK_ASSERT(end_pos >= 0 && end_pos <= len);
-
- if (start_pos > end_pos) {
- duk_int_t tmp = start_pos;
- start_pos = end_pos;
- end_pos = tmp;
- }
-
- DUK_ASSERT(end_pos >= start_pos);
-
- duk_substring(ctx, -1, (duk_size_t) start_pos, (duk_size_t) end_pos);
- return 1;
-}
-
-#ifdef DUK_USE_SECTION_B
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_substr(duk_context *ctx) {
- duk_hstring *h;
- duk_int_t start_pos, end_pos;
- duk_int_t len;
-
- /* Unlike non-obsolete String calls, substr() algorithm in E5.1
- * specification will happily coerce undefined and null to strings
- * ("undefined" and "null").
- */
- duk_push_this(ctx);
- h = duk_to_hstring(ctx, -1);
- DUK_ASSERT(h != NULL);
- len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h);
-
- /* [ start length str ] */
-
- /* The implementation for computing of start_pos and end_pos differs
- * from the standard algorithm, but is intended to result in the exactly
- * same behavior. This is not always obvious.
- */
-
- /* combines steps 2 and 5; -len ensures max() not needed for step 5 */
- start_pos = duk_to_int_clamped(ctx, 0, -len, len);
- if (start_pos < 0) {
- start_pos = len + start_pos;
- }
- DUK_ASSERT(start_pos >= 0 && start_pos <= len);
-
- /* combines steps 3, 6; step 7 is not needed */
- if (duk_is_undefined(ctx, 1)) {
- end_pos = len;
- } else {
- DUK_ASSERT(start_pos <= len);
- end_pos = start_pos + duk_to_int_clamped(ctx, 1, 0, len - start_pos);
- }
- DUK_ASSERT(start_pos >= 0 && start_pos <= len);
- DUK_ASSERT(end_pos >= 0 && end_pos <= len);
- DUK_ASSERT(end_pos >= start_pos);
-
- duk_substring(ctx, -1, (duk_size_t) start_pos, (duk_size_t) end_pos);
- return 1;
-}
-#else /* DUK_USE_SECTION_B */
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_substr(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_SECTION_B */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_slice(duk_context *ctx) {
- duk_hstring *h;
- duk_int_t start_pos, end_pos;
- duk_int_t len;
-
- h = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h != NULL);
- len = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h);
-
- /* [ start end str ] */
-
- start_pos = duk_to_int_clamped(ctx, 0, -len, len);
- if (start_pos < 0) {
- start_pos = len + start_pos;
- }
- if (duk_is_undefined(ctx, 1)) {
- end_pos = len;
- } else {
- end_pos = duk_to_int_clamped(ctx, 1, -len, len);
- if (end_pos < 0) {
- end_pos = len + end_pos;
- }
- }
- DUK_ASSERT(start_pos >= 0 && start_pos <= len);
- DUK_ASSERT(end_pos >= 0 && end_pos <= len);
-
- if (end_pos < start_pos) {
- end_pos = start_pos;
- }
-
- DUK_ASSERT(end_pos >= start_pos);
-
- duk_substring(ctx, -1, (duk_size_t) start_pos, (duk_size_t) end_pos);
- return 1;
-}
-
-/*
- * Case conversion
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_caseconv_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_small_int_t uppercase = duk_get_current_magic(ctx);
-
- (void) duk_push_this_coercible_to_string(ctx);
- duk_unicode_case_convert_string(thr, (duk_bool_t) uppercase);
- return 1;
-}
-
-/*
- * indexOf() and lastIndexOf()
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_indexof_shared(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_this;
- duk_hstring *h_search;
- duk_int_t clen_this;
- duk_int_t cpos;
- duk_int_t bpos;
- const duk_uint8_t *p_start, *p_end, *p;
- const duk_uint8_t *q_start;
- duk_int_t q_blen;
- duk_uint8_t firstbyte;
- duk_uint8_t t;
- duk_small_int_t is_lastindexof = duk_get_current_magic(ctx); /* 0=indexOf, 1=lastIndexOf */
-
- h_this = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h_this != NULL);
- clen_this = (duk_int_t) DUK_HSTRING_GET_CHARLEN(h_this);
-
- h_search = duk_to_hstring(ctx, 0);
- DUK_ASSERT(h_search != NULL);
- q_start = DUK_HSTRING_GET_DATA(h_search);
- q_blen = (duk_int_t) DUK_HSTRING_GET_BYTELEN(h_search);
-
- duk_to_number(ctx, 1);
- if (duk_is_nan(ctx, 1) && is_lastindexof) {
- /* indexOf: NaN should cause pos to be zero.
- * lastIndexOf: NaN should cause pos to be +Infinity
- * (and later be clamped to len).
- */
- cpos = clen_this;
- } else {
- cpos = duk_to_int_clamped(ctx, 1, 0, clen_this);
- }
-
- /* Empty searchstring always matches; cpos must be clamped here.
- * (If q_blen were < 0 due to clamped coercion, it would also be
- * caught here.)
- */
- if (q_blen <= 0) {
- duk_push_int(ctx, cpos);
- return 1;
- }
- DUK_ASSERT(q_blen > 0);
-
- bpos = (duk_int_t) duk_heap_strcache_offset_char2byte(thr, h_this, (duk_uint32_t) cpos);
-
- p_start = DUK_HSTRING_GET_DATA(h_this);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_this);
- p = p_start + bpos;
-
- /* This loop is optimized for size. For speed, there should be
- * two separate loops, and we should ensure that memcmp() can be
- * used without an extra "will searchstring fit" check. Doing
- * the preconditioning for 'p' and 'p_end' is easy but cpos
- * must be updated if 'p' is wound back (backward scanning).
- */
-
- firstbyte = q_start[0]; /* leading byte of match string */
- while (p <= p_end && p >= p_start) {
- t = *p;
-
- /* For Ecmascript strings, this check can only match for
- * initial UTF-8 bytes (not continuation bytes). For other
- * strings all bets are off.
- */
-
- if ((t == firstbyte) && ((duk_size_t) (p_end - p) >= (duk_size_t) q_blen)) {
- DUK_ASSERT(q_blen > 0); /* no issues with memcmp() zero size, even if broken */
- if (DUK_MEMCMP((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) {
- duk_push_int(ctx, cpos);
- return 1;
- }
- }
-
- /* track cpos while scanning */
- if (is_lastindexof) {
- /* when going backwards, we decrement cpos 'early';
- * 'p' may point to a continuation byte of the char
- * at offset 'cpos', but that's OK because we'll
- * backtrack all the way to the initial byte.
- */
- if ((t & 0xc0) != 0x80) {
- cpos--;
- }
- p--;
- } else {
- if ((t & 0xc0) != 0x80) {
- cpos++;
- }
- p++;
- }
- }
-
- /* Not found. Empty string case is handled specially above. */
- duk_push_int(ctx, -1);
- return 1;
-}
-
-/*
- * replace()
- */
-
-/* XXX: the current implementation works but is quite clunky; it compiles
- * to almost 1,4kB of x86 code so it needs to be simplified (better approach,
- * shared helpers, etc). Some ideas for refactoring:
- *
- * - a primitive to convert a string into a regexp matcher (reduces matching
- * code at the cost of making matching much slower)
- * - use replace() as a basic helper for match() and split(), which are both
- * much simpler
- * - API call to get_prop and to_boolean
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_replace(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_input;
- duk_hstring *h_match;
- duk_hstring *h_search;
- duk_hobject *h_re;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_bool_t is_regexp;
- duk_bool_t is_global;
-#endif
- duk_bool_t is_repl_func;
- duk_uint32_t match_start_coff, match_start_boff;
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_int_t match_caps;
-#endif
- duk_uint32_t prev_match_end_boff;
- const duk_uint8_t *r_start, *r_end, *r; /* repl string scan */
- duk_size_t tmp_sz;
-
- DUK_ASSERT_TOP(ctx, 2);
- h_input = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h_input != NULL);
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(thr, bw, DUK_HSTRING_GET_BYTELEN(h_input)); /* input size is good output starting point */
-
- DUK_ASSERT_TOP(ctx, 4);
-
- /* stack[0] = search value
- * stack[1] = replace value
- * stack[2] = input string
- * stack[3] = result buffer
- */
-
- h_re = duk_get_hobject_with_class(ctx, 0, DUK_HOBJECT_CLASS_REGEXP);
- if (h_re) {
-#ifdef DUK_USE_REGEXP_SUPPORT
- is_regexp = 1;
- is_global = duk_get_prop_stridx_boolean(ctx, 0, DUK_STRIDX_GLOBAL, NULL);
-
- if (is_global) {
- /* start match from beginning */
- duk_push_int(ctx, 0);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- }
-#else /* DUK_USE_REGEXP_SUPPORT */
- return DUK_RET_UNSUPPORTED_ERROR;
-#endif /* DUK_USE_REGEXP_SUPPORT */
- } else {
- duk_to_string(ctx, 0);
-#ifdef DUK_USE_REGEXP_SUPPORT
- is_regexp = 0;
- is_global = 0;
-#endif
- }
-
- if (duk_is_function(ctx, 1)) {
- is_repl_func = 1;
- r_start = NULL;
- r_end = NULL;
- } else {
- duk_hstring *h_repl;
-
- is_repl_func = 0;
- h_repl = duk_to_hstring(ctx, 1);
- DUK_ASSERT(h_repl != NULL);
- r_start = DUK_HSTRING_GET_DATA(h_repl);
- r_end = r_start + DUK_HSTRING_GET_BYTELEN(h_repl);
- }
-
- prev_match_end_boff = 0;
-
- for (;;) {
- /*
- * If matching with a regexp:
- * - non-global RegExp: lastIndex not touched on a match, zeroed
- * on a non-match
- * - global RegExp: on match, lastIndex will be updated by regexp
- * executor to point to next char after the matching part (so that
- * characters in the matching part are not matched again)
- *
- * If matching with a string:
- * - always non-global match, find first occurrence
- *
- * We need:
- * - The character offset of start-of-match for the replacer function
- * - The byte offsets for start-of-match and end-of-match to implement
- * the replacement values $&, $`, and $', and to copy non-matching
- * input string portions (including header and trailer) verbatim.
- *
- * NOTE: the E5.1 specification is a bit vague how the RegExp should
- * behave in the replacement process; e.g. is matching done first for
- * all matches (in the global RegExp case) before any replacer calls
- * are made? See: test-bi-string-proto-replace.js for discussion.
- */
-
- DUK_ASSERT_TOP(ctx, 4);
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (is_regexp) {
- duk_dup(ctx, 0);
- duk_dup(ctx, 2);
- duk_regexp_match(thr); /* [ ... regexp input ] -> [ res_obj ] */
- if (!duk_is_object(ctx, -1)) {
- duk_pop(ctx);
- break;
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INDEX);
- DUK_ASSERT(duk_is_number(ctx, -1));
- match_start_coff = duk_get_int(ctx, -1);
- duk_pop(ctx);
-
- duk_get_prop_index(ctx, -1, 0);
- DUK_ASSERT(duk_is_string(ctx, -1));
- h_match = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_match != NULL);
- duk_pop(ctx); /* h_match is borrowed, remains reachable through match_obj */
-
- if (DUK_HSTRING_GET_BYTELEN(h_match) == 0) {
- /* This should be equivalent to match() algorithm step 8.f.iii.2:
- * detect an empty match and allow it, but don't allow it twice.
- */
- duk_uint32_t last_index;
-
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- last_index = (duk_uint32_t) duk_get_uint(ctx, -1);
- DUK_DDD(DUK_DDDPRINT("empty match, bump lastIndex: %ld -> %ld",
- (long) last_index, (long) (last_index + 1)));
- duk_pop(ctx);
- duk_push_int(ctx, last_index + 1);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- }
-
- DUK_ASSERT(duk_get_length(ctx, -1) <= DUK_INT_MAX); /* string limits */
- match_caps = (duk_int_t) duk_get_length(ctx, -1);
- } else {
-#else /* DUK_USE_REGEXP_SUPPORT */
- { /* unconditionally */
-#endif /* DUK_USE_REGEXP_SUPPORT */
- const duk_uint8_t *p_start, *p_end, *p; /* input string scan */
- const duk_uint8_t *q_start; /* match string */
- duk_size_t q_blen;
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- DUK_ASSERT(!is_global); /* single match always */
-#endif
-
- p_start = DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start;
-
- h_search = duk_get_hstring(ctx, 0);
- DUK_ASSERT(h_search != NULL);
- q_start = DUK_HSTRING_GET_DATA(h_search);
- q_blen = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_search);
-
- p_end -= q_blen; /* ensure full memcmp() fits in while */
-
- match_start_coff = 0;
-
- while (p <= p_end) {
- DUK_ASSERT(p + q_blen <= DUK_HSTRING_GET_DATA(h_input) + DUK_HSTRING_GET_BYTELEN(h_input));
- if (DUK_MEMCMP((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) {
- duk_dup(ctx, 0);
- h_match = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_match != NULL);
-#ifdef DUK_USE_REGEXP_SUPPORT
- match_caps = 0;
-#endif
- goto found;
- }
-
- /* track utf-8 non-continuation bytes */
- if ((p[0] & 0xc0) != 0x80) {
- match_start_coff++;
- }
- p++;
- }
-
- /* not found */
- break;
- }
- found:
-
- /* stack[0] = search value
- * stack[1] = replace value
- * stack[2] = input string
- * stack[3] = result buffer
- * stack[4] = regexp match OR match string
- */
-
- match_start_boff = duk_heap_strcache_offset_char2byte(thr, h_input, match_start_coff);
-
- tmp_sz = (duk_size_t) (match_start_boff - prev_match_end_boff);
- DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff, tmp_sz);
-
- prev_match_end_boff = match_start_boff + DUK_HSTRING_GET_BYTELEN(h_match);
-
- if (is_repl_func) {
- duk_idx_t idx_args;
- duk_hstring *h_repl;
-
- /* regexp res_obj is at index 4 */
-
- duk_dup(ctx, 1);
- idx_args = duk_get_top(ctx);
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (is_regexp) {
- duk_int_t idx;
- duk_require_stack(ctx, match_caps + 2);
- for (idx = 0; idx < match_caps; idx++) {
- /* match followed by capture(s) */
- duk_get_prop_index(ctx, 4, idx);
- }
- } else {
-#else /* DUK_USE_REGEXP_SUPPORT */
- { /* unconditionally */
-#endif /* DUK_USE_REGEXP_SUPPORT */
- /* match == search string, by definition */
- duk_dup(ctx, 0);
- }
- duk_push_int(ctx, match_start_coff);
- duk_dup(ctx, 2);
-
- /* [ ... replacer match [captures] match_char_offset input ] */
-
- duk_call(ctx, duk_get_top(ctx) - idx_args);
- h_repl = duk_to_hstring(ctx, -1); /* -> [ ... repl_value ] */
- DUK_ASSERT(h_repl != NULL);
-
- DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_repl);
-
- duk_pop(ctx); /* repl_value */
- } else {
- r = r_start;
-
- while (r < r_end) {
- duk_int_t ch1;
- duk_int_t ch2;
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_int_t ch3;
-#endif
- duk_size_t left;
-
- ch1 = *r++;
- if (ch1 != DUK_ASC_DOLLAR) {
- goto repl_write;
- }
- left = r_end - r;
-
- if (left <= 0) {
- goto repl_write;
- }
-
- ch2 = r[0];
- switch ((int) ch2) {
- case DUK_ASC_DOLLAR: {
- ch1 = (1 << 8) + DUK_ASC_DOLLAR;
- goto repl_write;
- }
- case DUK_ASC_AMP: {
- DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_match);
- r++;
- continue;
- }
- case DUK_ASC_GRAVE: {
- tmp_sz = (duk_size_t) match_start_boff;
- DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input), tmp_sz);
- r++;
- continue;
- }
- case DUK_ASC_SINGLEQUOTE: {
- duk_uint32_t match_end_boff;
-
- /* Use match charlen instead of bytelen, just in case the input and
- * match codepoint encodings would have different lengths.
- */
- match_end_boff = duk_heap_strcache_offset_char2byte(thr,
- h_input,
- match_start_coff + DUK_HSTRING_GET_CHARLEN(h_match));
-
- tmp_sz = (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - match_end_boff);
- DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + match_end_boff, tmp_sz);
- r++;
- continue;
- }
- default: {
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_int_t capnum, captmp, capadv;
- /* XXX: optional check, match_caps is zero if no regexp,
- * so dollar will be interpreted literally anyway.
- */
-
- if (!is_regexp) {
- goto repl_write;
- }
-
- if (!(ch2 >= DUK_ASC_0 && ch2 <= DUK_ASC_9)) {
- goto repl_write;
- }
- capnum = ch2 - DUK_ASC_0;
- capadv = 1;
-
- if (left >= 2) {
- ch3 = r[1];
- if (ch3 >= DUK_ASC_0 && ch3 <= DUK_ASC_9) {
- captmp = capnum * 10 + (ch3 - DUK_ASC_0);
- if (captmp < match_caps) {
- capnum = captmp;
- capadv = 2;
- }
- }
- }
-
- if (capnum > 0 && capnum < match_caps) {
- DUK_ASSERT(is_regexp != 0); /* match_caps == 0 without regexps */
-
- /* regexp res_obj is at offset 4 */
- duk_get_prop_index(ctx, 4, (duk_uarridx_t) capnum);
- if (duk_is_string(ctx, -1)) {
- duk_hstring *h_tmp_str;
-
- h_tmp_str = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_tmp_str != NULL);
-
- DUK_BW_WRITE_ENSURE_HSTRING(thr, bw, h_tmp_str);
- } else {
- /* undefined -> skip (replaced with empty) */
- }
- duk_pop(ctx);
- r += capadv;
- continue;
- } else {
- goto repl_write;
- }
-#else /* DUK_USE_REGEXP_SUPPORT */
- goto repl_write; /* unconditionally */
-#endif /* DUK_USE_REGEXP_SUPPORT */
- } /* default case */
- } /* switch (ch2) */
-
- repl_write:
- /* ch1 = (r_increment << 8) + byte */
-
- DUK_BW_WRITE_ENSURE_U8(thr, bw, (duk_uint8_t) (ch1 & 0xff));
- r += ch1 >> 8;
- } /* while repl */
- } /* if (is_repl_func) */
-
- duk_pop(ctx); /* pop regexp res_obj or match string */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (!is_global) {
-#else
- { /* unconditionally; is_global==0 */
-#endif
- break;
- }
- }
-
- /* trailer */
- tmp_sz = (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - prev_match_end_boff);
- DUK_BW_WRITE_ENSURE_BYTES(thr, bw, DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff, tmp_sz);
-
- DUK_ASSERT_TOP(ctx, 4);
- DUK_BW_COMPACT(thr, bw);
- duk_to_string(ctx, -1);
- return 1;
-}
-
-/*
- * split()
- */
-
-/* XXX: very messy now, but works; clean up, remove unused variables (nomimally
- * used so compiler doesn't complain).
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_split(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_input;
- duk_hstring *h_sep;
- duk_uint32_t limit;
- duk_uint32_t arr_idx;
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_bool_t is_regexp;
-#endif
- duk_bool_t matched; /* set to 1 if any match exists (needed for empty input special case) */
- duk_uint32_t prev_match_end_coff, prev_match_end_boff;
- duk_uint32_t match_start_boff, match_start_coff;
- duk_uint32_t match_end_boff, match_end_coff;
-
- DUK_UNREF(thr);
-
- h_input = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h_input != NULL);
-
- duk_push_array(ctx);
-
- if (duk_is_undefined(ctx, 1)) {
- limit = 0xffffffffUL;
- } else {
- limit = duk_to_uint32(ctx, 1);
- }
-
- if (limit == 0) {
- return 1;
- }
-
- /* If the separator is a RegExp, make a "clone" of it. The specification
- * algorithm calls [[Match]] directly for specific indices; we emulate this
- * by tweaking lastIndex and using a "force global" variant of duk_regexp_match()
- * which will use global-style matching even when the RegExp itself is non-global.
- */
-
- if (duk_is_undefined(ctx, 0)) {
- /* The spec algorithm first does "R = ToString(separator)" before checking
- * whether separator is undefined. Since this is side effect free, we can
- * skip the ToString() here.
- */
- duk_dup(ctx, 2);
- duk_put_prop_index(ctx, 3, 0);
- return 1;
- } else if (duk_get_hobject_with_class(ctx, 0, DUK_HOBJECT_CLASS_REGEXP) != NULL) {
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_push_hobject_bidx(ctx, DUK_BIDX_REGEXP_CONSTRUCTOR);
- duk_dup(ctx, 0);
- duk_new(ctx, 1); /* [ ... RegExp val ] -> [ ... res ] */
- duk_replace(ctx, 0);
- /* lastIndex is initialized to zero by new RegExp() */
- is_regexp = 1;
-#else
- return DUK_RET_UNSUPPORTED_ERROR;
-#endif
- } else {
- duk_to_string(ctx, 0);
-#ifdef DUK_USE_REGEXP_SUPPORT
- is_regexp = 0;
-#endif
- }
-
- /* stack[0] = separator (string or regexp)
- * stack[1] = limit
- * stack[2] = input string
- * stack[3] = result array
- */
-
- prev_match_end_boff = 0;
- prev_match_end_coff = 0;
- arr_idx = 0;
- matched = 0;
-
- for (;;) {
- /*
- * The specification uses RegExp [[Match]] to attempt match at specific
- * offsets. We don't have such a primitive, so we use an actual RegExp
- * and tweak lastIndex. Since the RegExp may be non-global, we use a
- * special variant which forces global-like behavior for matching.
- */
-
- DUK_ASSERT_TOP(ctx, 4);
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (is_regexp) {
- duk_dup(ctx, 0);
- duk_dup(ctx, 2);
- duk_regexp_match_force_global(thr); /* [ ... regexp input ] -> [ res_obj ] */
- if (!duk_is_object(ctx, -1)) {
- duk_pop(ctx);
- break;
- }
- matched = 1;
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INDEX);
- DUK_ASSERT(duk_is_number(ctx, -1));
- match_start_coff = duk_get_int(ctx, -1);
- match_start_boff = duk_heap_strcache_offset_char2byte(thr, h_input, match_start_coff);
- duk_pop(ctx);
-
- if (match_start_coff == DUK_HSTRING_GET_CHARLEN(h_input)) {
- /* don't allow an empty match at the end of the string */
- duk_pop(ctx);
- break;
- }
-
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- DUK_ASSERT(duk_is_number(ctx, -1));
- match_end_coff = duk_get_int(ctx, -1);
- match_end_boff = duk_heap_strcache_offset_char2byte(thr, h_input, match_end_coff);
- duk_pop(ctx);
-
- /* empty match -> bump and continue */
- if (prev_match_end_boff == match_end_boff) {
- duk_push_int(ctx, match_end_coff + 1);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- duk_pop(ctx);
- continue;
- }
- } else {
-#else /* DUK_USE_REGEXP_SUPPORT */
- { /* unconditionally */
-#endif /* DUK_USE_REGEXP_SUPPORT */
- const duk_uint8_t *p_start, *p_end, *p; /* input string scan */
- const duk_uint8_t *q_start; /* match string */
- duk_size_t q_blen, q_clen;
-
- p_start = DUK_HSTRING_GET_DATA(h_input);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h_input);
- p = p_start + prev_match_end_boff;
-
- h_sep = duk_get_hstring(ctx, 0);
- DUK_ASSERT(h_sep != NULL);
- q_start = DUK_HSTRING_GET_DATA(h_sep);
- q_blen = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h_sep);
- q_clen = (duk_size_t) DUK_HSTRING_GET_CHARLEN(h_sep);
-
- p_end -= q_blen; /* ensure full memcmp() fits in while */
-
- match_start_coff = prev_match_end_coff;
-
- if (q_blen == 0) {
- /* Handle empty separator case: it will always match, and always
- * triggers the check in step 13.c.iii initially. Note that we
- * must skip to either end of string or start of first codepoint,
- * skipping over any continuation bytes!
- *
- * Don't allow an empty string to match at the end of the input.
- */
-
- matched = 1; /* empty separator can always match */
-
- match_start_coff++;
- p++;
- while (p < p_end) {
- if ((p[0] & 0xc0) != 0x80) {
- goto found;
- }
- p++;
- }
- goto not_found;
- }
-
- DUK_ASSERT(q_blen > 0 && q_clen > 0);
- while (p <= p_end) {
- DUK_ASSERT(p + q_blen <= DUK_HSTRING_GET_DATA(h_input) + DUK_HSTRING_GET_BYTELEN(h_input));
- DUK_ASSERT(q_blen > 0); /* no issues with empty memcmp() */
- if (DUK_MEMCMP((const void *) p, (const void *) q_start, (size_t) q_blen) == 0) {
- /* never an empty match, so step 13.c.iii can't be triggered */
- goto found;
- }
-
- /* track utf-8 non-continuation bytes */
- if ((p[0] & 0xc0) != 0x80) {
- match_start_coff++;
- }
- p++;
- }
-
- not_found:
- /* not found */
- break;
-
- found:
- matched = 1;
- match_start_boff = (duk_uint32_t) (p - p_start);
- match_end_coff = (duk_uint32_t) (match_start_coff + q_clen); /* constrained by string length */
- match_end_boff = (duk_uint32_t) (match_start_boff + q_blen); /* ditto */
-
- /* empty match (may happen with empty separator) -> bump and continue */
- if (prev_match_end_boff == match_end_boff) {
- prev_match_end_boff++;
- prev_match_end_coff++;
- continue;
- }
- } /* if (is_regexp) */
-
- /* stack[0] = separator (string or regexp)
- * stack[1] = limit
- * stack[2] = input string
- * stack[3] = result array
- * stack[4] = regexp res_obj (if is_regexp)
- */
-
- DUK_DDD(DUK_DDDPRINT("split; match_start b=%ld,c=%ld, match_end b=%ld,c=%ld, prev_end b=%ld,c=%ld",
- (long) match_start_boff, (long) match_start_coff,
- (long) match_end_boff, (long) match_end_coff,
- (long) prev_match_end_boff, (long) prev_match_end_coff));
-
- duk_push_lstring(ctx,
- (const char *) (DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff),
- (duk_size_t) (match_start_boff - prev_match_end_boff));
- duk_put_prop_index(ctx, 3, arr_idx);
- arr_idx++;
- if (arr_idx >= limit) {
- goto hit_limit;
- }
-
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (is_regexp) {
- duk_size_t i, len;
-
- len = duk_get_length(ctx, 4);
- for (i = 1; i < len; i++) {
- DUK_ASSERT(i <= DUK_UARRIDX_MAX); /* cannot have >4G captures */
- duk_get_prop_index(ctx, 4, (duk_uarridx_t) i);
- duk_put_prop_index(ctx, 3, arr_idx);
- arr_idx++;
- if (arr_idx >= limit) {
- goto hit_limit;
- }
- }
-
- duk_pop(ctx);
- /* lastIndex already set up for next match */
- } else {
-#else /* DUK_USE_REGEXP_SUPPORT */
- { /* unconditionally */
-#endif /* DUK_USE_REGEXP_SUPPORT */
- /* no action */
- }
-
- prev_match_end_boff = match_end_boff;
- prev_match_end_coff = match_end_coff;
- continue;
- } /* for */
-
- /* Combined step 11 (empty string special case) and 14-15. */
-
- DUK_DDD(DUK_DDDPRINT("split trailer; prev_end b=%ld,c=%ld",
- (long) prev_match_end_boff, (long) prev_match_end_coff));
-
- if (DUK_HSTRING_GET_CHARLEN(h_input) > 0 || !matched) {
- /* Add trailer if:
- * a) non-empty input
- * b) empty input and no (zero size) match found (step 11)
- */
-
- duk_push_lstring(ctx,
- (const char *) DUK_HSTRING_GET_DATA(h_input) + prev_match_end_boff,
- (duk_size_t) (DUK_HSTRING_GET_BYTELEN(h_input) - prev_match_end_boff));
- duk_put_prop_index(ctx, 3, arr_idx);
- /* No arr_idx update or limit check */
- }
-
- return 1;
-
- hit_limit:
-#ifdef DUK_USE_REGEXP_SUPPORT
- if (is_regexp) {
- duk_pop(ctx);
- }
-#endif
-
- return 1;
-}
-
-/*
- * Various
- */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-DUK_LOCAL void duk__to_regexp_helper(duk_context *ctx, duk_idx_t index, duk_bool_t force_new) {
- duk_hobject *h;
-
- /* Shared helper for match() steps 3-4, search() steps 3-4. */
-
- DUK_ASSERT(index >= 0);
-
- if (force_new) {
- goto do_new;
- }
-
- h = duk_get_hobject_with_class(ctx, index, DUK_HOBJECT_CLASS_REGEXP);
- if (!h) {
- goto do_new;
- }
- return;
-
- do_new:
- duk_push_hobject_bidx(ctx, DUK_BIDX_REGEXP_CONSTRUCTOR);
- duk_dup(ctx, index);
- duk_new(ctx, 1); /* [ ... RegExp val ] -> [ ... res ] */
- duk_replace(ctx, index);
-}
-#endif /* DUK_USE_REGEXP_SUPPORT */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_search(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
-
- /* Easiest way to implement the search required by the specification
- * is to do a RegExp test() with lastIndex forced to zero. To avoid
- * side effects on the argument, "clone" the RegExp if a RegExp was
- * given as input.
- *
- * The global flag of the RegExp should be ignored; setting lastIndex
- * to zero (which happens when "cloning" the RegExp) should have an
- * equivalent effect.
- */
-
- DUK_ASSERT_TOP(ctx, 1);
- (void) duk_push_this_coercible_to_string(ctx); /* at index 1 */
- duk__to_regexp_helper(ctx, 0 /*index*/, 1 /*force_new*/);
-
- /* stack[0] = regexp
- * stack[1] = string
- */
-
- /* Avoid using RegExp.prototype methods, as they're writable and
- * configurable and may have been changed.
- */
-
- duk_dup(ctx, 0);
- duk_dup(ctx, 1); /* [ ... re_obj input ] */
- duk_regexp_match(thr); /* -> [ ... res_obj ] */
-
- if (!duk_is_object(ctx, -1)) {
- duk_push_int(ctx, -1);
- return 1;
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INDEX);
- DUK_ASSERT(duk_is_number(ctx, -1));
- return 1;
-}
-#else /* DUK_USE_REGEXP_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_search(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_REGEXP_SUPPORT */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_match(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_bool_t global;
- duk_int_t prev_last_index;
- duk_int_t this_index;
- duk_int_t arr_idx;
-
- DUK_ASSERT_TOP(ctx, 1);
- (void) duk_push_this_coercible_to_string(ctx);
- duk__to_regexp_helper(ctx, 0 /*index*/, 0 /*force_new*/);
- global = duk_get_prop_stridx_boolean(ctx, 0, DUK_STRIDX_GLOBAL, NULL);
- DUK_ASSERT_TOP(ctx, 2);
-
- /* stack[0] = regexp
- * stack[1] = string
- */
-
- if (!global) {
- duk_regexp_match(thr); /* -> [ res_obj ] */
- return 1; /* return 'res_obj' */
- }
-
- /* Global case is more complex. */
-
- /* [ regexp string ] */
-
- duk_push_int(ctx, 0);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- duk_push_array(ctx);
-
- /* [ regexp string res_arr ] */
-
- prev_last_index = 0;
- arr_idx = 0;
-
- for (;;) {
- DUK_ASSERT_TOP(ctx, 3);
-
- duk_dup(ctx, 0);
- duk_dup(ctx, 1);
- duk_regexp_match(thr); /* -> [ ... regexp string ] -> [ ... res_obj ] */
-
- if (!duk_is_object(ctx, -1)) {
- duk_pop(ctx);
- break;
- }
-
- duk_get_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- DUK_ASSERT(duk_is_number(ctx, -1));
- this_index = duk_get_int(ctx, -1);
- duk_pop(ctx);
-
- if (this_index == prev_last_index) {
- this_index++;
- duk_push_int(ctx, this_index);
- duk_put_prop_stridx(ctx, 0, DUK_STRIDX_LAST_INDEX);
- }
- prev_last_index = this_index;
-
- duk_get_prop_index(ctx, -1, 0); /* match string */
- duk_put_prop_index(ctx, 2, arr_idx);
- arr_idx++;
- duk_pop(ctx); /* res_obj */
- }
-
- if (arr_idx == 0) {
- duk_push_null(ctx);
- }
-
- return 1; /* return 'res_arr' or 'null' */
-}
-#else /* DUK_USE_REGEXP_SUPPORT */
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_match(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_UNSUPPORTED_ERROR;
-}
-#endif /* DUK_USE_REGEXP_SUPPORT */
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_concat(duk_context *ctx) {
- /* duk_concat() coerces arguments with ToString() in correct order */
- (void) duk_push_this_coercible_to_string(ctx);
- duk_insert(ctx, 0); /* this is relatively expensive */
- duk_concat(ctx, duk_get_top(ctx));
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_trim(duk_context *ctx) {
- DUK_ASSERT_TOP(ctx, 0);
- (void) duk_push_this_coercible_to_string(ctx);
- duk_trim(ctx, 0);
- DUK_ASSERT_TOP(ctx, 1);
- return 1;
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_string_prototype_locale_compare(duk_context *ctx) {
- duk_hstring *h1;
- duk_hstring *h2;
- duk_size_t h1_len, h2_len, prefix_len;
- duk_small_int_t ret = 0;
- duk_small_int_t rc;
-
- /* The current implementation of localeCompare() is simply a codepoint
- * by codepoint comparison, implemented with a simple string compare
- * because UTF-8 should preserve codepoint ordering (assuming valid
- * shortest UTF-8 encoding).
- *
- * The specification requires that the return value must be related
- * to the sort order: e.g. negative means that 'this' comes before
- * 'that' in sort order. We assume an ascending sort order.
- */
-
- /* XXX: could share code with duk_js_ops.c, duk_js_compare_helper */
-
- h1 = duk_push_this_coercible_to_string(ctx);
- DUK_ASSERT(h1 != NULL);
-
- h2 = duk_to_hstring(ctx, 0);
- DUK_ASSERT(h2 != NULL);
-
- h1_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h1);
- h2_len = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h2);
- prefix_len = (h1_len <= h2_len ? h1_len : h2_len);
-
- /* Zero size compare not an issue with DUK_MEMCMP. */
- rc = (duk_small_int_t) DUK_MEMCMP((const void *) DUK_HSTRING_GET_DATA(h1),
- (const void *) DUK_HSTRING_GET_DATA(h2),
- (size_t) prefix_len);
-
- if (rc < 0) {
- ret = -1;
- goto done;
- } else if (rc > 0) {
- ret = 1;
- goto done;
- }
-
- /* prefix matches, lengths matter now */
- if (h1_len > h2_len) {
- ret = 1;
- goto done;
- } else if (h1_len == h2_len) {
- DUK_ASSERT(ret == 0);
- goto done;
- }
- ret = -1;
- goto done;
-
- done:
- duk_push_int(ctx, (duk_int_t) ret);
- return 1;
-}
-#line 1 "duk_bi_thread.c"
-/*
- * Thread builtins
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Constructor
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_thread_constructor(duk_context *ctx) {
- duk_hthread *new_thr;
- duk_hobject *func;
-
- /* XXX: need a duk_require_func_or_lfunc_coerce() */
- if (!duk_is_callable(ctx, 0)) {
- return DUK_RET_TYPE_ERROR;
- }
- func = duk_require_hobject_or_lfunc_coerce(ctx, 0);
- DUK_ASSERT(func != NULL);
-
- duk_push_thread(ctx);
- new_thr = (duk_hthread *) duk_get_hobject(ctx, -1);
- DUK_ASSERT(new_thr != NULL);
- new_thr->state = DUK_HTHREAD_STATE_INACTIVE;
-
- /* push initial function call to new thread stack; this is
- * picked up by resume().
- */
- duk_push_hobject((duk_context *) new_thr, func);
-
- return 1; /* return thread */
-}
-
-/*
- * Resume a thread.
- *
- * The thread must be in resumable state, either (a) new thread which hasn't
- * yet started, or (b) a thread which has previously yielded. This method
- * must be called from an Ecmascript function.
- *
- * Args:
- * - thread
- * - value
- * - isError (defaults to false)
- *
- * Note: yield and resume handling is currently asymmetric.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_thread_resume(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hthread *thr_resume;
- duk_tval *tv;
- duk_hobject *func;
- duk_hobject *caller_func;
- duk_small_int_t is_error;
-
- DUK_DDD(DUK_DDDPRINT("Duktape.Thread.resume(): thread=%!T, value=%!T, is_error=%!T",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1),
- (duk_tval *) duk_get_tval(ctx, 2)));
-
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
- DUK_ASSERT(thr->heap->curr_thread == thr);
-
- thr_resume = duk_require_hthread(ctx, 0);
- is_error = (duk_small_int_t) duk_to_boolean(ctx, 2);
- duk_set_top(ctx, 2);
-
- /* [ thread value ] */
-
- /*
- * Thread state and calling context checks
- */
-
- if (thr->callstack_top < 2) {
- DUK_DD(DUK_DDPRINT("resume state invalid: callstack should contain at least 2 entries (caller and Duktape.Thread.resume)"));
- goto state_error;
- }
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); /* us */
- DUK_ASSERT(DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2) != NULL); /* caller */
-
- caller_func = DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2);
- if (!DUK_HOBJECT_IS_COMPILEDFUNCTION(caller_func)) {
- DUK_DD(DUK_DDPRINT("resume state invalid: caller must be Ecmascript code"));
- goto state_error;
- }
-
- /* Note: there is no requirement that: 'thr->callstack_preventcount == 1'
- * like for yield.
- */
-
- if (thr_resume->state != DUK_HTHREAD_STATE_INACTIVE &&
- thr_resume->state != DUK_HTHREAD_STATE_YIELDED) {
- DUK_DD(DUK_DDPRINT("resume state invalid: target thread must be INACTIVE or YIELDED"));
- goto state_error;
- }
-
- DUK_ASSERT(thr_resume->state == DUK_HTHREAD_STATE_INACTIVE ||
- thr_resume->state == DUK_HTHREAD_STATE_YIELDED);
-
- /* Further state-dependent pre-checks */
-
- if (thr_resume->state == DUK_HTHREAD_STATE_YIELDED) {
- /* no pre-checks now, assume a previous yield() has left things in
- * tip-top shape (longjmp handler will assert for these).
- */
- } else {
- DUK_ASSERT(thr_resume->state == DUK_HTHREAD_STATE_INACTIVE);
-
- if ((thr_resume->callstack_top != 0) ||
- (thr_resume->valstack_top - thr_resume->valstack != 1)) {
- goto state_invalid_initial;
- }
- tv = &thr_resume->valstack_top[-1];
- DUK_ASSERT(tv >= thr_resume->valstack && tv < thr_resume->valstack_top);
- if (!DUK_TVAL_IS_OBJECT(tv)) {
- goto state_invalid_initial;
- }
- func = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(func != NULL);
- if (!DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- /* Note: cannot be a bound function either right now,
- * this would be easy to relax though.
- */
- goto state_invalid_initial;
- }
-
- }
-
- /*
- * The error object has been augmented with a traceback and other
- * info from its creation point -- usually another thread. The
- * error handler is called here right before throwing, but it also
- * runs in the resumer's thread. It might be nice to get a traceback
- * from the resumee but this is not the case now.
- */
-
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
- if (is_error) {
- DUK_ASSERT_TOP(ctx, 2); /* value (error) is at stack top */
- duk_err_augment_error_throw(thr); /* in resumer's context */
- }
-#endif
-
-#ifdef DUK_USE_DEBUG
- if (is_error) {
- DUK_DDD(DUK_DDDPRINT("RESUME ERROR: thread=%!T, value=%!T",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1)));
- } else if (thr_resume->state == DUK_HTHREAD_STATE_YIELDED) {
- DUK_DDD(DUK_DDDPRINT("RESUME NORMAL: thread=%!T, value=%!T",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1)));
- } else {
- DUK_DDD(DUK_DDDPRINT("RESUME INITIAL: thread=%!T, value=%!T",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1)));
- }
-#endif
-
- thr->heap->lj.type = DUK_LJ_TYPE_RESUME;
-
- /* lj value2: thread */
- DUK_ASSERT(thr->valstack_bottom < thr->valstack_top);
- DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value2, &thr->valstack_bottom[0]); /* side effects */
-
- /* lj value1: value */
- DUK_ASSERT(thr->valstack_bottom + 1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[1]); /* side effects */
- DUK_TVAL_CHKFAST_INPLACE(&thr->heap->lj.value1);
-
- thr->heap->lj.iserror = is_error;
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* call is from executor, so we know we have a jmpbuf */
- duk_err_longjmp(thr); /* execution resumes in bytecode executor */
- return 0; /* never here */
-
- state_invalid_initial:
- DUK_ERROR_TYPE(thr, "invalid initial thread state/stack");
- return 0; /* never here */
-
- state_error:
- DUK_ERROR_TYPE(thr, "invalid state");
- return 0; /* never here */
-}
-
-/*
- * Yield the current thread.
- *
- * The thread must be in yieldable state: it must have a resumer, and there
- * must not be any yield-preventing calls (native calls and constructor calls,
- * currently) in the thread's call stack (otherwise a resume would not be
- * possible later). This method must be called from an Ecmascript function.
- *
- * Args:
- * - value
- * - isError (defaults to false)
- *
- * Note: yield and resume handling is currently asymmetric.
- */
-
-DUK_INTERNAL duk_ret_t duk_bi_thread_yield(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *caller_func;
- duk_small_int_t is_error;
-
- DUK_DDD(DUK_DDDPRINT("Duktape.Thread.yield(): value=%!T, is_error=%!T",
- (duk_tval *) duk_get_tval(ctx, 0),
- (duk_tval *) duk_get_tval(ctx, 1)));
-
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
- DUK_ASSERT(thr->heap->curr_thread == thr);
-
- is_error = (duk_small_int_t) duk_to_boolean(ctx, 1);
- duk_set_top(ctx, 1);
-
- /* [ value ] */
-
- /*
- * Thread state and calling context checks
- */
-
- if (!thr->resumer) {
- DUK_DD(DUK_DDPRINT("yield state invalid: current thread must have a resumer"));
- goto state_error;
- }
- DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED);
-
- if (thr->callstack_top < 2) {
- DUK_DD(DUK_DDPRINT("yield state invalid: callstack should contain at least 2 entries (caller and Duktape.Thread.yield)"));
- goto state_error;
- }
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL); /* us */
- DUK_ASSERT(DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2) != NULL); /* caller */
-
- caller_func = DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2);
- if (!DUK_HOBJECT_IS_COMPILEDFUNCTION(caller_func)) {
- DUK_DD(DUK_DDPRINT("yield state invalid: caller must be Ecmascript code"));
- goto state_error;
- }
-
- DUK_ASSERT(thr->callstack_preventcount >= 1); /* should never be zero, because we (Duktape.Thread.yield) are on the stack */
- if (thr->callstack_preventcount != 1) {
- /* Note: the only yield-preventing call is Duktape.Thread.yield(), hence check for 1, not 0 */
- DUK_DD(DUK_DDPRINT("yield state invalid: there must be no yield-preventing calls in current thread callstack (preventcount is %ld)",
- (long) thr->callstack_preventcount));
- goto state_error;
- }
-
- /*
- * The error object has been augmented with a traceback and other
- * info from its creation point -- usually the current thread.
- * The error handler, however, is called right before throwing
- * and runs in the yielder's thread.
- */
-
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
- if (is_error) {
- DUK_ASSERT_TOP(ctx, 1); /* value (error) is at stack top */
- duk_err_augment_error_throw(thr); /* in yielder's context */
- }
-#endif
-
-#ifdef DUK_USE_DEBUG
- if (is_error) {
- DUK_DDD(DUK_DDDPRINT("YIELD ERROR: value=%!T",
- (duk_tval *) duk_get_tval(ctx, 0)));
- } else {
- DUK_DDD(DUK_DDDPRINT("YIELD NORMAL: value=%!T",
- (duk_tval *) duk_get_tval(ctx, 0)));
- }
-#endif
-
- /*
- * Process yield
- *
- * After longjmp(), processing continues in bytecode executor longjmp
- * handler, which will e.g. update thr->resumer to NULL.
- */
-
- thr->heap->lj.type = DUK_LJ_TYPE_YIELD;
-
- /* lj value1: value */
- DUK_ASSERT(thr->valstack_bottom < thr->valstack_top);
- DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, &thr->valstack_bottom[0]); /* side effects */
- DUK_TVAL_CHKFAST_INPLACE(&thr->heap->lj.value1);
-
- thr->heap->lj.iserror = is_error;
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* call is from executor, so we know we have a jmpbuf */
- duk_err_longjmp(thr); /* execution resumes in bytecode executor */
- return 0; /* never here */
-
- state_error:
- DUK_ERROR_TYPE(thr, "invalid state");
- return 0; /* never here */
-}
-
-DUK_INTERNAL duk_ret_t duk_bi_thread_current(duk_context *ctx) {
- duk_push_current_thread(ctx);
- return 1;
-}
-#line 1 "duk_bi_thrower.c"
-/*
- * Type error thrower, E5 Section 13.2.3.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_ret_t duk_bi_type_error_thrower(duk_context *ctx) {
- DUK_UNREF(ctx);
- return DUK_RET_TYPE_ERROR;
-}
-#line 1 "duk_debug_fixedbuffer.c"
-/*
- * Fixed buffer helper useful for debugging, requires no allocation
- * which is critical for debugging.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_DEBUG
-
-DUK_INTERNAL void duk_fb_put_bytes(duk_fixedbuffer *fb, const duk_uint8_t *buffer, duk_size_t length) {
- duk_size_t avail;
- duk_size_t copylen;
-
- avail = (fb->offset >= fb->length ? (duk_size_t) 0 : (duk_size_t) (fb->length - fb->offset));
- if (length > avail) {
- copylen = avail;
- fb->truncated = 1;
- } else {
- copylen = length;
- }
- DUK_MEMCPY(fb->buffer + fb->offset, buffer, copylen);
- fb->offset += copylen;
-}
-
-DUK_INTERNAL void duk_fb_put_byte(duk_fixedbuffer *fb, duk_uint8_t x) {
- duk_fb_put_bytes(fb, (const duk_uint8_t *) &x, 1);
-}
-
-DUK_INTERNAL void duk_fb_put_cstring(duk_fixedbuffer *fb, const char *x) {
- duk_fb_put_bytes(fb, (const duk_uint8_t *) x, (duk_size_t) DUK_STRLEN(x));
-}
-
-DUK_INTERNAL void duk_fb_sprintf(duk_fixedbuffer *fb, const char *fmt, ...) {
- duk_size_t avail;
- va_list ap;
-
- va_start(ap, fmt);
- avail = (fb->offset >= fb->length ? (duk_size_t) 0 : (duk_size_t) (fb->length - fb->offset));
- if (avail > 0) {
- duk_int_t res = (duk_int_t) DUK_VSNPRINTF((char *) (fb->buffer + fb->offset), avail, fmt, ap);
- if (res < 0) {
- /* error */
- } else if ((duk_size_t) res >= avail) {
- /* (maybe) truncated */
- fb->offset += avail;
- if ((duk_size_t) res > avail) {
- /* actual chars dropped (not just NUL term) */
- fb->truncated = 1;
- }
- } else {
- /* normal */
- fb->offset += res;
- }
- }
- va_end(ap);
-}
-
-DUK_INTERNAL void duk_fb_put_funcptr(duk_fixedbuffer *fb, duk_uint8_t *fptr, duk_size_t fptr_size) {
- char buf[64+1];
- duk_debug_format_funcptr(buf, sizeof(buf), fptr, fptr_size);
- buf[sizeof(buf) - 1] = (char) 0;
- duk_fb_put_cstring(fb, buf);
-}
-
-DUK_INTERNAL duk_bool_t duk_fb_is_full(duk_fixedbuffer *fb) {
- return (fb->offset >= fb->length);
-}
-
-#endif /* DUK_USE_DEBUG */
-#line 1 "duk_debug_heap.c"
-/*
- * Debug dumping of duk_heap.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_DEBUG
-
-#if 0 /*unused*/
-DUK_LOCAL void duk__sanitize_snippet(char *buf, duk_size_t buf_size, duk_hstring *str) {
- duk_size_t i;
- duk_size_t nchars;
- duk_size_t maxchars;
- duk_uint8_t *data;
-
- DUK_MEMZERO(buf, buf_size);
-
- maxchars = (duk_size_t) (buf_size - 1);
- data = DUK_HSTRING_GET_DATA(str);
- nchars = ((duk_size_t) str->blen < maxchars ? (duk_size_t) str->blen : maxchars);
- for (i = 0; i < nchars; i++) {
- duk_small_int_t c = (duk_small_int_t) data[i];
- if (c < 0x20 || c > 0x7e) {
- c = '.';
- }
- buf[i] = (char) c;
- }
-}
-#endif
-
-#if 0
-DUK_LOCAL const char *duk__get_heap_type_string(duk_heaphdr *hdr) {
- switch (DUK_HEAPHDR_GET_TYPE(hdr)) {
- case DUK_HTYPE_STRING:
- return "string";
- case DUK_HTYPE_OBJECT:
- return "object";
- case DUK_HTYPE_BUFFER:
- return "buffer";
- default:
- return "???";
- }
-}
-#endif
-
-#if 0
-DUK_LOCAL void duk__dump_indented(duk_heaphdr *obj, int index) {
- DUK_UNREF(obj);
- DUK_UNREF(index);
- DUK_UNREF(duk__get_heap_type_string);
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_D(DUK_DPRINT(" [%ld]: %p %s (flags: 0x%08lx, ref: %ld) -> %!O",
- (long) index,
- (void *) obj,
- (const char *) duk__get_heap_type_string(obj),
- (unsigned long) DUK_HEAPHDR_GET_FLAGS(obj),
- (long) DUK_HEAPHDR_GET_REFCOUNT(obj),
- (duk_heaphdr *) obj));
-#else
- DUK_D(DUK_DPRINT(" [%ld]: %p %s (flags: 0x%08lx) -> %!O",
- (long) index,
- (void *) obj,
- (const char *) duk__get_heap_type_string(obj),
- (unsigned long) DUK_HEAPHDR_GET_FLAGS(obj),
- (duk_heaphdr *) obj));
-#endif
-}
-#endif
-
-#if 0 /*unused*/
-DUK_LOCAL void duk__dump_heaphdr_list(duk_heap *heap, duk_heaphdr *root, const char *name) {
- duk_int_t count;
- duk_heaphdr *curr;
-
- DUK_UNREF(heap);
- DUK_UNREF(name);
-
- count = 0;
- curr = root;
- while (curr) {
- count++;
- curr = DUK_HEAPHDR_GET_NEXT(curr);
- }
-
- DUK_D(DUK_DPRINT("%s, %ld objects", (const char *) name, (long) count));
-
- count = 0;
- curr = root;
- while (curr) {
- count++;
- duk__dump_indented(curr, count);
- curr = DUK_HEAPHDR_GET_NEXT(curr);
- }
-}
-#endif
-
-#if 0 /*unused*/
-DUK_LOCAL void duk__dump_stringtable(duk_heap *heap) {
- duk_uint_fast32_t i;
- char buf[64+1];
-
- DUK_D(DUK_DPRINT("stringtable %p, used %ld, size %ld, load %ld%%",
- (void *) heap->strtable,
- (long) heap->st_used,
- (long) heap->st_size,
- (long) (((double) heap->st_used) / ((double) heap->st_size) * 100.0)));
-
- for (i = 0; i < (duk_uint_fast32_t) heap->st_size; i++) {
- duk_hstring *e = heap->strtable[i];
-
- if (!e) {
- DUK_D(DUK_DPRINT(" [%ld]: NULL", (long) i));
- } else if (e == DUK_STRTAB_DELETED_MARKER(heap)) {
- DUK_D(DUK_DPRINT(" [%ld]: DELETED", (long) i));
- } else {
- duk__sanitize_snippet(buf, sizeof(buf), e);
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_D(DUK_DPRINT(" [%ld]: %p (flags: 0x%08lx, ref: %ld) '%s', strhash=0x%08lx, blen=%ld, clen=%ld, "
- "arridx=%ld, internal=%ld, reserved_word=%ld, strict_reserved_word=%ld, eval_or_arguments=%ld",
- (long) i,
- (void *) e,
- (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) e),
- (long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) e),
- (const char *) buf,
- (unsigned long) e->hash,
- (long) e->blen,
- (long) e->clen,
- (long) (DUK_HSTRING_HAS_ARRIDX(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_INTERNAL(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_RESERVED_WORD(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(e) ? 1 : 0)));
-#else
- DUK_D(DUK_DPRINT(" [%ld]: %p (flags: 0x%08lx) '%s', strhash=0x%08lx, blen=%ld, clen=%ld, "
- "arridx=%ld, internal=%ld, reserved_word=%ld, strict_reserved_word=%ld, eval_or_arguments=%ld",
- (long) i,
- (void *) e,
- (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) e),
- (const char *) buf,
- (long) e->hash,
- (long) e->blen,
- (long) e->clen,
- (long) (DUK_HSTRING_HAS_ARRIDX(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_INTERNAL(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_RESERVED_WORD(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(e) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(e) ? 1 : 0)));
-#endif
- }
- }
-}
-#endif
-
-#if 0 /*unused*/
-DUK_LOCAL void duk__dump_strcache(duk_heap *heap) {
- duk_uint_fast32_t i;
- char buf[64+1];
-
- DUK_D(DUK_DPRINT("stringcache"));
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HEAP_STRCACHE_SIZE; i++) {
- duk_strcache *c = &heap->strcache[i];
- if (!c->h) {
- DUK_D(DUK_DPRINT(" [%ld]: bidx=%ld, cidx=%ld, str=NULL",
- (long) i, (long) c->bidx, (long) c->cidx));
- } else {
- duk__sanitize_snippet(buf, sizeof(buf), c->h);
- DUK_D(DUK_DPRINT(" [%ld]: bidx=%ld cidx=%ld str=%s",
- (long) i, (long) c->bidx, (long) c->cidx, (const char *) buf));
- }
- }
-}
-#endif
-
-#if 0 /*unused*/
-DUK_INTERNAL void duk_debug_dump_heap(duk_heap *heap) {
- char buf[64+1];
-
- DUK_D(DUK_DPRINT("=== heap %p ===", (void *) heap));
- DUK_D(DUK_DPRINT(" flags: 0x%08lx", (unsigned long) heap->flags));
-
- /* Note: there is no standard formatter for function pointers */
-#ifdef DUK_USE_GCC_PRAGMAS
-#pragma GCC diagnostic push
-#pragma GCC diagnostic ignored "-pedantic"
-#endif
- duk_debug_format_funcptr(buf, sizeof(buf), (duk_uint8_t *) &heap->alloc_func, sizeof(heap->alloc_func));
- DUK_D(DUK_DPRINT(" alloc_func: %s", (const char *) buf));
- duk_debug_format_funcptr(buf, sizeof(buf), (duk_uint8_t *) &heap->realloc_func, sizeof(heap->realloc_func));
- DUK_D(DUK_DPRINT(" realloc_func: %s", (const char *) buf));
- duk_debug_format_funcptr(buf, sizeof(buf), (duk_uint8_t *) &heap->free_func, sizeof(heap->free_func));
- DUK_D(DUK_DPRINT(" free_func: %s", (const char *) buf));
- duk_debug_format_funcptr(buf, sizeof(buf), (duk_uint8_t *) &heap->fatal_func, sizeof(heap->fatal_func));
- DUK_D(DUK_DPRINT(" fatal_func: %s", (const char *) buf));
-#ifdef DUK_USE_GCC_PRAGMAS
-#pragma GCC diagnostic pop
-#endif
-
- DUK_D(DUK_DPRINT(" heap_udata: %p", (void *) heap->heap_udata));
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-#ifdef DUK_USE_VOLUNTARY_GC
- DUK_D(DUK_DPRINT(" mark-and-sweep trig counter: %ld", (long) heap->mark_and_sweep_trigger_counter));
-#endif
- DUK_D(DUK_DPRINT(" mark-and-sweep rec depth: %ld", (long) heap->mark_and_sweep_recursion_depth));
- DUK_D(DUK_DPRINT(" mark-and-sweep base flags: 0x%08lx", (unsigned long) heap->mark_and_sweep_base_flags));
-#endif
-
- DUK_D(DUK_DPRINT(" lj.jmpbuf_ptr: %p", (void *) heap->lj.jmpbuf_ptr));
- DUK_D(DUK_DPRINT(" lj.type: %ld", (long) heap->lj.type));
- DUK_D(DUK_DPRINT(" lj.value1: %!T", (duk_tval *) &heap->lj.value1));
- DUK_D(DUK_DPRINT(" lj.value2: %!T", (duk_tval *) &heap->lj.value2));
- DUK_D(DUK_DPRINT(" lj.iserror: %ld", (long) heap->lj.iserror));
-
- DUK_D(DUK_DPRINT(" handling_error: %ld", (long) heap->handling_error));
-
- DUK_D(DUK_DPRINT(" heap_thread: %!@O", (duk_heaphdr *) heap->heap_thread));
- DUK_D(DUK_DPRINT(" curr_thread: %!@O", (duk_heaphdr *) heap->curr_thread));
- DUK_D(DUK_DPRINT(" heap_object: %!@O", (duk_heaphdr *) heap->heap_object));
-
- DUK_D(DUK_DPRINT(" call_recursion_depth: %ld", (long) heap->call_recursion_depth));
- DUK_D(DUK_DPRINT(" call_recursion_limit: %ld", (long) heap->call_recursion_limit));
-
- DUK_D(DUK_DPRINT(" hash_seed: 0x%08lx", (unsigned long) heap->hash_seed));
- DUK_D(DUK_DPRINT(" rnd_state: 0x%08lx", (unsigned long) heap->rnd_state));
-
- duk__dump_strcache(heap);
-
- duk__dump_heaphdr_list(heap, heap->heap_allocated, "heap allocated");
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__dump_heaphdr_list(heap, heap->refzero_list, "refcounting refzero list");
-#endif
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk__dump_heaphdr_list(heap, heap->finalize_list, "mark-and-sweep finalize list");
-#endif
-
- duk__dump_stringtable(heap);
-
- /* heap->strs: not worth dumping */
-}
-#endif
-
-#endif /* DUK_USE_DEBUG */
-#line 1 "duk_debug_vsnprintf.c"
-/*
- * Custom formatter for debug printing, allowing Duktape specific data
- * structures (such as tagged values and heap objects) to be printed with
- * a nice format string. Because debug printing should not affect execution
- * state, formatting here must be independent of execution (see implications
- * below) and must not allocate memory.
- *
- * Custom format tags begin with a '%!' to safely distinguish them from
- * standard format tags. The following conversions are supported:
- *
- * %!T tagged value (duk_tval *)
- * %!O heap object (duk_heaphdr *)
- * %!I decoded bytecode instruction
- * %!C bytecode instruction opcode name (arg is long)
- *
- * Everything is serialized in a JSON-like manner. The default depth is one
- * level, internal prototype is not followed, and internal properties are not
- * serialized. The following modifiers change this behavior:
- *
- * @ print pointers
- * # print binary representations (where applicable)
- * d deep traversal of own properties (not prototype)
- * p follow prototype chain (useless without 'd')
- * i include internal properties (other than prototype)
- * x hexdump buffers
- * h heavy formatting
- *
- * For instance, the following serializes objects recursively, but does not
- * follow the prototype chain nor print internal properties: "%!dO".
- *
- * Notes:
- *
- * * Standard snprintf return value semantics seem to vary. This
- * implementation returns the number of bytes it actually wrote
- * (excluding the null terminator). If retval == buffer size,
- * output was truncated (except for corner cases).
- *
- * * Output format is intentionally different from Ecmascript
- * formatting requirements, as formatting here serves debugging
- * of internals.
- *
- * * Depth checking (and updating) is done in each type printer
- * separately, to allow them to call each other freely.
- *
- * * Some pathological structures might take ages to print (e.g.
- * self recursion with 100 properties pointing to the object
- * itself). To guard against these, each printer also checks
- * whether the output buffer is full; if so, early exit.
- *
- * * Reference loops are detected using a loop stack.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_DEBUG
-
-#include <stdio.h>
-#include <stdarg.h>
-#include <string.h>
-
-/* list of conversion specifiers that terminate a format tag;
- * this is unfortunately guesswork.
- */
-#define DUK__ALLOWED_STANDARD_SPECIFIERS "diouxXeEfFgGaAcsCSpnm"
-
-/* maximum length of standard format tag that we support */
-#define DUK__MAX_FORMAT_TAG_LENGTH 32
-
-/* heapobj recursion depth when deep printing is selected */
-#define DUK__DEEP_DEPTH_LIMIT 8
-
-/* maximum recursion depth for loop detection stacks */
-#define DUK__LOOP_STACK_DEPTH 256
-
-/* must match bytecode defines now; build autogenerate? */
-DUK_LOCAL const char *duk__bc_optab[64] = {
- "LDREG", "STREG", "LDCONST", "LDINT", "LDINTX", "MPUTOBJ", "MPUTOBJI", "MPUTARR", "MPUTARRI", "NEW",
- "NEWI", "REGEXP", "CSREG", "CSREGI", "GETVAR", "PUTVAR", "DECLVAR", "DELVAR", "CSVAR", "CSVARI",
- "CLOSURE", "GETPROP", "PUTPROP", "DELPROP", "CSPROP", "CSPROPI", "ADD", "SUB", "MUL", "DIV",
- "MOD", "BAND", "BOR", "BXOR", "BASL", "BLSR", "BASR", "EQ", "NEQ", "SEQ",
- "SNEQ", "GT", "GE", "LT", "LE", "IF", "JUMP", "RETURN", "CALL", "CALLI",
- "TRYCATCH", "EXTRA", "PREINCR", "PREDECR", "POSTINCR", "POSTDECR", "PREINCV", "PREDECV", "POSTINCV", "POSTDECV",
- "PREINCP", "PREDECP", "POSTINCP", "POSTDECP"
-};
-
-DUK_LOCAL const char *duk__bc_extraoptab[256] = {
- "NOP", "INVALID", "LDTHIS", "LDUNDEF", "LDNULL", "LDTRUE", "LDFALSE", "NEWOBJ", "NEWARR", "SETALEN",
- "TYPEOF", "TYPEOFID", "INITENUM", "NEXTENUM", "INITSET", "INITSETI", "INITGET", "INITGETI", "ENDTRY", "ENDCATCH",
- "ENDFIN", "THROW", "INVLHS", "UNM", "UNP", "DEBUGGER", "BREAK", "CONTINUE", "BNOT", "LNOT",
- "INSTOF", "IN", "LABEL", "ENDLABEL", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
-
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
-
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
-
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
-
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX", "XXX",
-
- "XXX", "XXX", "XXX", "XXX", "XXX", "XXX"
-};
-
-typedef struct duk__dprint_state duk__dprint_state;
-struct duk__dprint_state {
- duk_fixedbuffer *fb;
-
- /* loop_stack_index could be perhaps be replaced by 'depth', but it's nice
- * to not couple these two mechanisms unnecessarily.
- */
- duk_hobject *loop_stack[DUK__LOOP_STACK_DEPTH];
- duk_int_t loop_stack_index;
- duk_int_t loop_stack_limit;
-
- duk_int_t depth;
- duk_int_t depth_limit;
-
- duk_bool_t pointer;
- duk_bool_t heavy;
- duk_bool_t binary;
- duk_bool_t follow_proto;
- duk_bool_t internal;
- duk_bool_t hexdump;
-};
-
-/* helpers */
-DUK_LOCAL_DECL void duk__print_hstring(duk__dprint_state *st, duk_hstring *k, duk_bool_t quotes);
-DUK_LOCAL_DECL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h);
-DUK_LOCAL_DECL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h);
-DUK_LOCAL_DECL void duk__print_tval(duk__dprint_state *st, duk_tval *tv);
-DUK_LOCAL_DECL void duk__print_instr(duk__dprint_state *st, duk_instr_t ins);
-DUK_LOCAL_DECL void duk__print_heaphdr(duk__dprint_state *st, duk_heaphdr *h);
-DUK_LOCAL_DECL void duk__print_shared_heaphdr(duk__dprint_state *st, duk_heaphdr *h);
-DUK_LOCAL_DECL void duk__print_shared_heaphdr_string(duk__dprint_state *st, duk_heaphdr_string *h);
-
-DUK_LOCAL void duk__print_shared_heaphdr(duk__dprint_state *st, duk_heaphdr *h) {
- duk_fixedbuffer *fb = st->fb;
-
- if (st->heavy) {
- duk_fb_sprintf(fb, "(%p)", (void *) h);
- }
-
- if (!h) {
- return;
- }
-
- if (st->binary) {
- duk_size_t i;
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET);
- for (i = 0; i < (duk_size_t) sizeof(*h); i++) {
- duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *)h)[i]);
- }
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET);
- }
-
-#ifdef DUK_USE_REFERENCE_COUNTING /* currently implicitly also DUK_USE_DOUBLE_LINKED_HEAP */
- if (st->heavy) {
- duk_fb_sprintf(fb, "[h_next=%p,h_prev=%p,h_refcount=%lu,h_flags=%08lx,type=%ld,"
- "reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]",
- (void *) DUK_HEAPHDR_GET_NEXT(NULL, h),
- (void *) DUK_HEAPHDR_GET_PREV(NULL, h),
- (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(h),
- (unsigned long) DUK_HEAPHDR_GET_FLAGS(h),
- (long) DUK_HEAPHDR_GET_TYPE(h),
- (long) (DUK_HEAPHDR_HAS_REACHABLE(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_TEMPROOT(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZABLE(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZED(h) ? 1 : 0));
- }
-#else
- if (st->heavy) {
- duk_fb_sprintf(fb, "[h_next=%p,h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]",
- (void *) DUK_HEAPHDR_GET_NEXT(NULL, h),
- (unsigned long) DUK_HEAPHDR_GET_FLAGS(h),
- (long) DUK_HEAPHDR_GET_TYPE(h),
- (long) (DUK_HEAPHDR_HAS_REACHABLE(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_TEMPROOT(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZABLE(h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZED(h) ? 1 : 0));
- }
-#endif
-}
-
-DUK_LOCAL void duk__print_shared_heaphdr_string(duk__dprint_state *st, duk_heaphdr_string *h) {
- duk_fixedbuffer *fb = st->fb;
-
- if (st->heavy) {
- duk_fb_sprintf(fb, "(%p)", (void *) h);
- }
-
- if (!h) {
- return;
- }
-
- if (st->binary) {
- duk_size_t i;
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET);
- for (i = 0; i < (duk_size_t) sizeof(*h); i++) {
- duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *)h)[i]);
- }
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET);
- }
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- if (st->heavy) {
- duk_fb_sprintf(fb, "[h_refcount=%lu,h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]",
- (unsigned long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h),
- (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) h),
- (long) DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h),
- (long) (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_TEMPROOT((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZABLE((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) h) ? 1 : 0));
- }
-#else
- if (st->heavy) {
- duk_fb_sprintf(fb, "[h_flags=%08lx,type=%ld,reachable=%ld,temproot=%ld,finalizable=%ld,finalized=%ld]",
- (unsigned long) DUK_HEAPHDR_GET_FLAGS((duk_heaphdr *) h),
- (long) DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h),
- (long) (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_TEMPROOT((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZABLE((duk_heaphdr *) h) ? 1 : 0),
- (long) (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) h) ? 1 : 0));
- }
-#endif
-}
-
-DUK_LOCAL void duk__print_hstring(duk__dprint_state *st, duk_hstring *h, duk_bool_t quotes) {
- duk_fixedbuffer *fb = st->fb;
- const duk_uint8_t *p;
- const duk_uint8_t *p_end;
-
- /* terminal type: no depth check */
-
- if (duk_fb_is_full(fb)) {
- return;
- }
-
- duk__print_shared_heaphdr_string(st, &h->hdr);
-
- if (!h) {
- duk_fb_put_cstring(fb, "NULL");
- return;
- }
-
- p = DUK_HSTRING_GET_DATA(h);
- p_end = p + DUK_HSTRING_GET_BYTELEN(h);
-
- if (p_end > p && p[0] == DUK_ASC_UNDERSCORE) {
- /* if property key begins with underscore, encode it with
- * forced quotes (e.g. "_Foo") to distinguish it from encoded
- * internal properties (e.g. \xffBar -> _Bar).
- */
- quotes = 1;
- }
-
- if (quotes) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_DOUBLEQUOTE);
- }
- while (p < p_end) {
- duk_uint8_t ch = *p++;
-
- /* two special escapes: '\' and '"', other printables as is */
- if (ch == '\\') {
- duk_fb_sprintf(fb, "\\\\");
- } else if (ch == '"') {
- duk_fb_sprintf(fb, "\\\"");
- } else if (ch >= 0x20 && ch <= 0x7e) {
- duk_fb_put_byte(fb, ch);
- } else if (ch == 0xff && !quotes) {
- /* encode \xffBar as _Bar if no quotes are applied, this is for
- * readable internal keys.
- */
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_UNDERSCORE);
- } else {
- duk_fb_sprintf(fb, "\\x%02lx", (unsigned long) ch);
- }
- }
- if (quotes) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_DOUBLEQUOTE);
- }
-#ifdef DUK_USE_REFERENCE_COUNTING
- /* XXX: limit to quoted strings only, to save keys from being cluttered? */
- duk_fb_sprintf(fb, "/%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(&h->hdr));
-#endif
-}
-
-#ifdef DUK__COMMA
-#undef DUK__COMMA
-#endif
-#define DUK__COMMA() do { \
- if (first) { \
- first = 0; \
- } else { \
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COMMA); \
- } \
- } while (0)
-
-DUK_LOCAL void duk__print_hobject(duk__dprint_state *st, duk_hobject *h) {
- duk_fixedbuffer *fb = st->fb;
- duk_uint_fast32_t i;
- duk_tval *tv;
- duk_hstring *key;
- duk_bool_t first = 1;
- const char *brace1 = "{";
- const char *brace2 = "}";
- duk_bool_t pushed_loopstack = 0;
-
- if (duk_fb_is_full(fb)) {
- return;
- }
-
- duk__print_shared_heaphdr(st, &h->hdr);
-
- if (h && DUK_HOBJECT_HAS_ARRAY_PART(h)) {
- brace1 = "[";
- brace2 = "]";
- }
-
- if (!h) {
- duk_fb_put_cstring(fb, "NULL");
- goto finished;
- }
-
- if (st->depth >= st->depth_limit) {
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- duk_fb_sprintf(fb, "%sobject/compiledfunction %p%s", (const char *) brace1, (void *) h, (const char *) brace2);
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- duk_fb_sprintf(fb, "%sobject/nativefunction %p%s", (const char *) brace1, (void *) h, (const char *) brace2);
- } else if (DUK_HOBJECT_IS_THREAD(h)) {
- duk_fb_sprintf(fb, "%sobject/thread %p%s", (const char *) brace1, (void *) h, (const char *) brace2);
- } else {
- duk_fb_sprintf(fb, "%sobject %p%s", (const char *) brace1, (void *) h, (const char *) brace2); /* may be NULL */
- }
- return;
- }
-
- for (i = 0; i < (duk_uint_fast32_t) st->loop_stack_index; i++) {
- if (st->loop_stack[i] == h) {
- duk_fb_sprintf(fb, "%sLOOP:%p%s", (const char *) brace1, (void *) h, (const char *) brace2);
- return;
- }
- }
-
- /* after this, return paths should 'goto finished' for decrement */
- st->depth++;
-
- if (st->loop_stack_index >= st->loop_stack_limit) {
- duk_fb_sprintf(fb, "%sOUT-OF-LOOP-STACK%s", (const char *) brace1, (const char *) brace2);
- goto finished;
- }
- st->loop_stack[st->loop_stack_index++] = h;
- pushed_loopstack = 1;
-
- /*
- * Notation: double underscore used for internal properties which are not
- * stored in the property allocation (e.g. '__valstack').
- */
-
- duk_fb_put_cstring(fb, brace1);
-
- if (DUK_HOBJECT_GET_PROPS(NULL, h)) {
- duk_uint32_t a_limit;
-
- a_limit = DUK_HOBJECT_GET_ASIZE(h);
- if (st->internal) {
- /* dump all allocated entries, unused entries print as 'unused',
- * note that these may extend beyond current 'length' and look
- * a bit funny.
- */
- } else {
- /* leave out trailing 'unused' elements */
- while (a_limit > 0) {
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, a_limit - 1);
- if (!DUK_TVAL_IS_UNUSED(tv)) {
- break;
- }
- a_limit--;
- }
- }
-
- for (i = 0; i < a_limit; i++) {
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(NULL, h, i);
- DUK__COMMA();
- duk__print_tval(st, tv);
- }
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(h); i++) {
- key = DUK_HOBJECT_E_GET_KEY(NULL, h, i);
- if (!key) {
- continue;
- }
- if (!st->internal &&
- DUK_HSTRING_GET_BYTELEN(key) > 0 &&
- DUK_HSTRING_GET_DATA(key)[0] == 0xff) {
- /* XXX: use DUK_HSTRING_FLAG_INTERNAL? */
- continue;
- }
- DUK__COMMA();
- duk__print_hstring(st, key, 0);
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COLON);
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(NULL, h, i)) {
- duk_fb_sprintf(fb, "[get:%p,set:%p]",
- (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.get,
- (void *) DUK_HOBJECT_E_GET_VALUE(NULL, h, i).a.set);
- } else {
- tv = &DUK_HOBJECT_E_GET_VALUE(NULL, h, i).v;
- duk__print_tval(st, tv);
- }
- if (st->heavy) {
- duk_fb_sprintf(fb, "<%02lx>", (unsigned long) DUK_HOBJECT_E_GET_FLAGS(NULL, h, i));
- }
- }
- }
- if (st->internal) {
- if (DUK_HOBJECT_HAS_EXTENSIBLE(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__extensible:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_CONSTRUCTABLE(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__constructable:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_BOUND(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__bound:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_COMPILEDFUNCTION(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__compiledfunction:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_NATIVEFUNCTION(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__nativefunction:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_THREAD(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__thread:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_ARRAY_PART(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__array_part:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_STRICT(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__strict:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_NEWENV(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__newenv:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_NAMEBINDING(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__namebinding:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_CREATEARGS(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__createargs:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_ENVRECCLOSED(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__envrecclosed:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_array:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_stringobj:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_arguments:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_EXOTIC_DUKFUNC(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_dukfunc:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_bufferobj:true");
- } else {
- ;
- }
- if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(h)) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__exotic_proxyobj:true");
- } else {
- ;
- }
- }
- if (st->internal && DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
- DUK__COMMA(); duk_fb_put_cstring(fb, "__data:");
- duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA(NULL, f));
- DUK__COMMA(); duk_fb_sprintf(fb, "__nregs:%ld", (long) f->nregs);
- DUK__COMMA(); duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- DUK__COMMA(); duk_fb_sprintf(fb, "__start_line:%ld", (long) f->start_line);
- DUK__COMMA(); duk_fb_sprintf(fb, "__end_line:%ld", (long) f->end_line);
-#endif
- DUK__COMMA(); duk_fb_put_cstring(fb, "__data:");
- duk__print_hbuffer(st, (duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA(NULL, f));
- } else if (st->internal && DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- duk_hnativefunction *f = (duk_hnativefunction *) h;
- DUK__COMMA(); duk_fb_sprintf(fb, "__func:");
- duk_fb_put_funcptr(fb, (duk_uint8_t *) &f->func, sizeof(f->func));
- DUK__COMMA(); duk_fb_sprintf(fb, "__nargs:%ld", (long) f->nargs);
- DUK__COMMA(); duk_fb_sprintf(fb, "__magic:%ld", (long) f->magic);
- } else if (st->internal && DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- duk_hbufferobject *b = (duk_hbufferobject *) h;
- DUK__COMMA(); duk_fb_sprintf(fb, "__buf:");
- duk__print_hbuffer(st, (duk_hbuffer *) b->buf);
- DUK__COMMA(); duk_fb_sprintf(fb, "__offset:%ld", (long) b->offset);
- DUK__COMMA(); duk_fb_sprintf(fb, "__length:%ld", (long) b->length);
- DUK__COMMA(); duk_fb_sprintf(fb, "__shift:%ld", (long) b->shift);
- DUK__COMMA(); duk_fb_sprintf(fb, "__elemtype:%ld", (long) b->elem_type);
- } else if (st->internal && DUK_HOBJECT_IS_THREAD(h)) {
- duk_hthread *t = (duk_hthread *) h;
- DUK__COMMA(); duk_fb_sprintf(fb, "__strict:%ld", (long) t->strict);
- DUK__COMMA(); duk_fb_sprintf(fb, "__state:%ld", (long) t->state);
- DUK__COMMA(); duk_fb_sprintf(fb, "__unused1:%ld", (long) t->unused1);
- DUK__COMMA(); duk_fb_sprintf(fb, "__unused2:%ld", (long) t->unused2);
- DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_max:%ld", (long) t->valstack_max);
- DUK__COMMA(); duk_fb_sprintf(fb, "__callstack_max:%ld", (long) t->callstack_max);
- DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_max:%ld", (long) t->catchstack_max);
- DUK__COMMA(); duk_fb_sprintf(fb, "__valstack:%p", (void *) t->valstack);
- DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_end:%p/%ld", (void *) t->valstack_end, (long) (t->valstack_end - t->valstack));
- DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_bottom:%p/%ld", (void *) t->valstack_bottom, (long) (t->valstack_bottom - t->valstack));
- DUK__COMMA(); duk_fb_sprintf(fb, "__valstack_top:%p/%ld", (void *) t->valstack_top, (long) (t->valstack_top - t->valstack));
- DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack:%p", (void *) t->catchstack);
- DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_size:%ld", (long) t->catchstack_size);
- DUK__COMMA(); duk_fb_sprintf(fb, "__catchstack_top:%ld", (long) t->catchstack_top);
- DUK__COMMA(); duk_fb_sprintf(fb, "__resumer:"); duk__print_hobject(st, (duk_hobject *) t->resumer);
- /* XXX: print built-ins array? */
-
- }
-#ifdef DUK_USE_REFERENCE_COUNTING
- if (st->internal) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__refcount:%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h));
- }
-#endif
- if (st->internal) {
- DUK__COMMA(); duk_fb_sprintf(fb, "__class:%ld", (long) DUK_HOBJECT_GET_CLASS_NUMBER(h));
- }
-
- DUK__COMMA(); duk_fb_sprintf(fb, "__heapptr:%p", (void *) h); /* own pointer */
-
- /* prototype should be last, for readability */
- if (DUK_HOBJECT_GET_PROTOTYPE(NULL, h)) {
- if (st->follow_proto) {
- DUK__COMMA(); duk_fb_put_cstring(fb, "__prototype:"); duk__print_hobject(st, DUK_HOBJECT_GET_PROTOTYPE(NULL, h));
- } else {
- DUK__COMMA(); duk_fb_sprintf(fb, "__prototype:%p", (void *) DUK_HOBJECT_GET_PROTOTYPE(NULL, h));
- }
- }
-
- duk_fb_put_cstring(fb, brace2);
-
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- if (st->heavy && DUK_HOBJECT_GET_HSIZE(h) > 0) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LANGLE);
- for (i = 0; i < DUK_HOBJECT_GET_HSIZE(h); i++) {
- duk_uint_t h_idx = DUK_HOBJECT_H_GET_INDEX(NULL, h, i);
- if (i > 0) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_COMMA);
- }
- if (h_idx == DUK_HOBJECT_HASHIDX_UNUSED) {
- duk_fb_sprintf(fb, "u");
- } else if (h_idx == DUK_HOBJECT_HASHIDX_DELETED) {
- duk_fb_sprintf(fb, "d");
- } else {
- duk_fb_sprintf(fb, "%ld", (long) h_idx);
- }
- }
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RANGLE);
- }
-#endif
-
- finished:
- st->depth--;
- if (pushed_loopstack) {
- st->loop_stack_index--;
- st->loop_stack[st->loop_stack_index] = NULL;
- }
-}
-
-#undef DUK__COMMA
-
-DUK_LOCAL void duk__print_hbuffer(duk__dprint_state *st, duk_hbuffer *h) {
- duk_fixedbuffer *fb = st->fb;
- duk_size_t i, n;
- duk_uint8_t *p;
-
- if (duk_fb_is_full(fb)) {
- return;
- }
-
- /* terminal type: no depth check */
-
- if (!h) {
- duk_fb_put_cstring(fb, "NULL");
- return;
- }
-
- if (DUK_HBUFFER_HAS_DYNAMIC(h)) {
- if (DUK_HBUFFER_HAS_EXTERNAL(h)) {
- duk_hbuffer_external *g = (duk_hbuffer_external *) h;
- duk_fb_sprintf(fb, "buffer:external:%p:%ld",
- (void *) DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(NULL, g),
- (long) DUK_HBUFFER_EXTERNAL_GET_SIZE(g));
- } else {
- duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h;
- duk_fb_sprintf(fb, "buffer:dynamic:%p:%ld",
- (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(NULL, g),
- (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(g));
- }
- } else {
- duk_fb_sprintf(fb, "buffer:fixed:%ld", (long) DUK_HBUFFER_GET_SIZE(h));
- }
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk_fb_sprintf(fb, "/%lu", (unsigned long) DUK_HEAPHDR_GET_REFCOUNT(&h->hdr));
-#endif
-
- if (st->hexdump) {
- duk_fb_sprintf(fb, "=[");
- n = DUK_HBUFFER_GET_SIZE(h);
- p = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(NULL, h);
- for (i = 0; i < n; i++) {
- duk_fb_sprintf(fb, "%02lx", (unsigned long) p[i]);
- }
- duk_fb_sprintf(fb, "]");
- }
-}
-
-DUK_LOCAL void duk__print_heaphdr(duk__dprint_state *st, duk_heaphdr *h) {
- duk_fixedbuffer *fb = st->fb;
-
- if (duk_fb_is_full(fb)) {
- return;
- }
-
- if (!h) {
- duk_fb_put_cstring(fb, "NULL");
- return;
- }
-
- switch (DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING:
- duk__print_hstring(st, (duk_hstring *) h, 1);
- break;
- case DUK_HTYPE_OBJECT:
- duk__print_hobject(st, (duk_hobject *) h);
- break;
- case DUK_HTYPE_BUFFER:
- duk__print_hbuffer(st, (duk_hbuffer *) h);
- break;
- default:
- duk_fb_sprintf(fb, "[unknown htype %ld]", (long) DUK_HEAPHDR_GET_TYPE(h));
- break;
- }
-}
-
-DUK_LOCAL void duk__print_tval(duk__dprint_state *st, duk_tval *tv) {
- duk_fixedbuffer *fb = st->fb;
-
- if (duk_fb_is_full(fb)) {
- return;
- }
-
- /* depth check is done when printing an actual type */
-
- if (st->heavy) {
- duk_fb_sprintf(fb, "(%p)", (void *) tv);
- }
-
- if (!tv) {
- duk_fb_put_cstring(fb, "NULL");
- return;
- }
-
- if (st->binary) {
- duk_size_t i;
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LBRACKET);
- for (i = 0; i < (duk_size_t) sizeof(*tv); i++) {
- duk_fb_sprintf(fb, "%02lx", (unsigned long) ((duk_uint8_t *)tv)[i]);
- }
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RBRACKET);
- }
-
- if (st->heavy) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_LANGLE);
- }
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED: {
- duk_fb_put_cstring(fb, "undefined");
- break;
- }
- case DUK_TAG_UNUSED: {
- duk_fb_put_cstring(fb, "unused");
- break;
- }
- case DUK_TAG_NULL: {
- duk_fb_put_cstring(fb, "null");
- break;
- }
- case DUK_TAG_BOOLEAN: {
- duk_fb_put_cstring(fb, DUK_TVAL_GET_BOOLEAN(tv) ? "true" : "false");
- break;
- }
- case DUK_TAG_STRING: {
- /* Note: string is a terminal heap object, so no depth check here */
- duk__print_hstring(st, DUK_TVAL_GET_STRING(tv), 1);
- break;
- }
- case DUK_TAG_OBJECT: {
- duk__print_hobject(st, DUK_TVAL_GET_OBJECT(tv));
- break;
- }
- case DUK_TAG_BUFFER: {
- duk__print_hbuffer(st, DUK_TVAL_GET_BUFFER(tv));
- break;
- }
- case DUK_TAG_POINTER: {
- duk_fb_sprintf(fb, "pointer:%p", (void *) DUK_TVAL_GET_POINTER(tv));
- break;
- }
- case DUK_TAG_LIGHTFUNC: {
- duk_c_function func;
- duk_small_uint_t lf_flags;
-
- DUK_TVAL_GET_LIGHTFUNC(tv, func, lf_flags);
- duk_fb_sprintf(fb, "lightfunc:");
- duk_fb_put_funcptr(fb, (duk_uint8_t *) &func, sizeof(func));
- duk_fb_sprintf(fb, ":%04lx", (long) lf_flags);
- break;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* IEEE double is approximately 16 decimal digits; print a couple extra */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- duk_fb_sprintf(fb, "%.18g", (double) DUK_TVAL_GET_NUMBER(tv));
- break;
- }
- }
- if (st->heavy) {
- duk_fb_put_byte(fb, (duk_uint8_t) DUK_ASC_RANGLE);
- }
-}
-
-DUK_LOCAL void duk__print_instr(duk__dprint_state *st, duk_instr_t ins) {
- duk_fixedbuffer *fb = st->fb;
- duk_small_int_t op;
- const char *op_name;
- const char *extraop_name;
-
- op = (duk_small_int_t) DUK_DEC_OP(ins);
- op_name = duk__bc_optab[op];
-
- /* XXX: option to fix opcode length so it lines up nicely */
-
- if (op == DUK_OP_EXTRA) {
- extraop_name = duk__bc_extraoptab[DUK_DEC_A(ins)];
-
- duk_fb_sprintf(fb, "%s %ld, %ld",
- (const char *) extraop_name, (long) DUK_DEC_B(ins), (long) DUK_DEC_C(ins));
- } else if (op == DUK_OP_JUMP) {
- duk_int_t diff1 = DUK_DEC_ABC(ins) - DUK_BC_JUMP_BIAS; /* from next pc */
- duk_int_t diff2 = diff1 + 1; /* from curr pc */
-
- duk_fb_sprintf(fb, "%s %ld (to pc%c%ld)",
- (const char *) op_name, (long) diff1,
- (int) (diff2 >= 0 ? '+' : '-'), /* char format: use int */
- (long) (diff2 >= 0 ? diff2 : -diff2));
- } else {
- duk_fb_sprintf(fb, "%s %ld, %ld, %ld",
- (const char *) op_name, (long) DUK_DEC_A(ins),
- (long) DUK_DEC_B(ins), (long) DUK_DEC_C(ins));
- }
-}
-
-DUK_LOCAL void duk__print_opcode(duk__dprint_state *st, duk_small_int_t opcode) {
- duk_fixedbuffer *fb = st->fb;
-
- if (opcode < DUK_BC_OP_MIN || opcode > DUK_BC_OP_MAX) {
- duk_fb_sprintf(fb, "?(%ld)", (long) opcode);
- } else {
- duk_fb_sprintf(fb, "%s", (const char *) duk__bc_optab[opcode]);
- }
-}
-
-DUK_INTERNAL duk_int_t duk_debug_vsnprintf(char *str, duk_size_t size, const char *format, va_list ap) {
- duk_fixedbuffer fb;
- const char *p = format;
- const char *p_end = p + DUK_STRLEN(format);
- duk_int_t retval;
-
- DUK_MEMZERO(&fb, sizeof(fb));
- fb.buffer = (duk_uint8_t *) str;
- fb.length = size;
- fb.offset = 0;
- fb.truncated = 0;
-
- while (p < p_end) {
- char ch = *p++;
- const char *p_begfmt = NULL;
- duk_bool_t got_exclamation = 0;
- duk_bool_t got_long = 0; /* %lf, %ld etc */
- duk__dprint_state st;
-
- if (ch != DUK_ASC_PERCENT) {
- duk_fb_put_byte(&fb, (duk_uint8_t) ch);
- continue;
- }
-
- /*
- * Format tag parsing. Since we don't understand all the
- * possible format tags allowed, we just scan for a terminating
- * specifier and keep track of relevant modifiers that we do
- * understand. See man 3 printf.
- */
-
- DUK_MEMZERO(&st, sizeof(st));
- st.fb = &fb;
- st.depth = 0;
- st.depth_limit = 1;
- st.loop_stack_index = 0;
- st.loop_stack_limit = DUK__LOOP_STACK_DEPTH;
-
- p_begfmt = p - 1;
- while (p < p_end) {
- ch = *p++;
-
- if (ch == DUK_ASC_STAR) {
- /* unsupported: would consume multiple args */
- goto error;
- } else if (ch == DUK_ASC_PERCENT) {
- duk_fb_put_byte(&fb, (duk_uint8_t) DUK_ASC_PERCENT);
- break;
- } else if (ch == DUK_ASC_EXCLAMATION) {
- got_exclamation = 1;
- } else if (!got_exclamation && ch == DUK_ASC_LC_L) {
- got_long = 1;
- } else if (got_exclamation && ch == DUK_ASC_LC_D) {
- st.depth_limit = DUK__DEEP_DEPTH_LIMIT;
- } else if (got_exclamation && ch == DUK_ASC_LC_P) {
- st.follow_proto = 1;
- } else if (got_exclamation && ch == DUK_ASC_LC_I) {
- st.internal = 1;
- } else if (got_exclamation && ch == DUK_ASC_LC_X) {
- st.hexdump = 1;
- } else if (got_exclamation && ch == DUK_ASC_LC_H) {
- st.heavy = 1;
- } else if (got_exclamation && ch == DUK_ASC_ATSIGN) {
- st.pointer = 1;
- } else if (got_exclamation && ch == DUK_ASC_HASH) {
- st.binary = 1;
- } else if (got_exclamation && ch == DUK_ASC_UC_T) {
- duk_tval *t = va_arg(ap, duk_tval *);
- if (st.pointer && !st.heavy) {
- duk_fb_sprintf(&fb, "(%p)", (void *) t);
- }
- duk__print_tval(&st, t);
- break;
- } else if (got_exclamation && ch == DUK_ASC_UC_O) {
- duk_heaphdr *t = va_arg(ap, duk_heaphdr *);
- if (st.pointer && !st.heavy) {
- duk_fb_sprintf(&fb, "(%p)", (void *) t);
- }
- duk__print_heaphdr(&st, t);
- break;
- } else if (got_exclamation && ch == DUK_ASC_UC_I) {
- duk_instr_t t = va_arg(ap, duk_instr_t);
- duk__print_instr(&st, t);
- break;
- } else if (got_exclamation && ch == DUK_ASC_UC_C) {
- long t = va_arg(ap, long);
- duk__print_opcode(&st, (duk_small_int_t) t);
- break;
- } else if (!got_exclamation && strchr(DUK__ALLOWED_STANDARD_SPECIFIERS, (int) ch)) {
- char fmtbuf[DUK__MAX_FORMAT_TAG_LENGTH];
- duk_size_t fmtlen;
-
- DUK_ASSERT(p >= p_begfmt);
- fmtlen = (duk_size_t) (p - p_begfmt);
- if (fmtlen >= sizeof(fmtbuf)) {
- /* format is too large, abort */
- goto error;
- }
- DUK_MEMZERO(fmtbuf, sizeof(fmtbuf));
- DUK_MEMCPY(fmtbuf, p_begfmt, fmtlen);
-
- /* assume exactly 1 arg, which is why '*' is forbidden; arg size still
- * depends on type though.
- */
-
- if (ch == DUK_ASC_LC_F || ch == DUK_ASC_LC_G || ch == DUK_ASC_LC_E) {
- /* %f and %lf both consume a 'long' */
- double arg = va_arg(ap, double);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_D && got_long) {
- /* %ld */
- long arg = va_arg(ap, long);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_D) {
- /* %d; only 16 bits are guaranteed */
- int arg = va_arg(ap, int);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_U && got_long) {
- /* %lu */
- unsigned long arg = va_arg(ap, unsigned long);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_U) {
- /* %u; only 16 bits are guaranteed */
- unsigned int arg = va_arg(ap, unsigned int);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_X && got_long) {
- /* %lx */
- unsigned long arg = va_arg(ap, unsigned long);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_X) {
- /* %x; only 16 bits are guaranteed */
- unsigned int arg = va_arg(ap, unsigned int);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else if (ch == DUK_ASC_LC_S) {
- /* %s */
- const char *arg = va_arg(ap, const char *);
- if (arg == NULL) {
- /* '%s' and NULL is not portable, so special case
- * it for debug printing.
- */
- duk_fb_sprintf(&fb, "NULL");
- } else {
- duk_fb_sprintf(&fb, fmtbuf, arg);
- }
- } else if (ch == DUK_ASC_LC_P) {
- /* %p */
- void *arg = va_arg(ap, void *);
- if (arg == NULL) {
- /* '%p' and NULL is portable, but special case it
- * anyway to get a standard NULL marker in logs.
- */
- duk_fb_sprintf(&fb, "NULL");
- } else {
- duk_fb_sprintf(&fb, fmtbuf, arg);
- }
- } else if (ch == DUK_ASC_LC_C) {
- /* '%c', passed concretely as int */
- int arg = va_arg(ap, int);
- duk_fb_sprintf(&fb, fmtbuf, arg);
- } else {
- /* Should not happen. */
- duk_fb_sprintf(&fb, "INVALID-FORMAT(%s)", (const char *) fmtbuf);
- }
- break;
- } else {
- /* ignore */
- }
- }
- }
- goto done;
-
- error:
- duk_fb_put_cstring(&fb, "FMTERR");
- /* fall through */
-
- done:
- retval = (duk_int_t) fb.offset;
- duk_fb_put_byte(&fb, (duk_uint8_t) 0);
-
- /* return total chars written excluding terminator */
- return retval;
-}
-
-#if 0 /*unused*/
-DUK_INTERNAL duk_int_t duk_debug_snprintf(char *str, duk_size_t size, const char *format, ...) {
- duk_int_t retval;
- va_list ap;
- va_start(ap, format);
- retval = duk_debug_vsnprintf(str, size, format, ap);
- va_end(ap);
- return retval;
-}
-#endif
-
-/* Formatting function pointers is tricky: there is no standard pointer for
- * function pointers and the size of a function pointer may depend on the
- * specific pointer type. This helper formats a function pointer based on
- * its memory layout to get something useful on most platforms.
- */
-DUK_INTERNAL void duk_debug_format_funcptr(char *buf, duk_size_t buf_size, duk_uint8_t *fptr, duk_size_t fptr_size) {
- duk_size_t i;
- duk_uint8_t *p = (duk_uint8_t *) buf;
- duk_uint8_t *p_end = (duk_uint8_t *) (buf + buf_size - 1);
-
- DUK_MEMZERO(buf, buf_size);
-
- for (i = 0; i < fptr_size; i++) {
- duk_int_t left = (duk_int_t) (p_end - p);
- duk_uint8_t ch;
- if (left <= 0) {
- break;
- }
-
- /* Quite approximate but should be useful for little and big endian. */
-#ifdef DUK_USE_INTEGER_BE
- ch = fptr[i];
-#else
- ch = fptr[fptr_size - 1 - i];
-#endif
- p += DUK_SNPRINTF((char *) p, left, "%02lx", (unsigned long) ch);
- }
-}
-
-#endif /* DUK_USE_DEBUG */
-#line 1 "duk_debugger.c"
-/*
- * Duktape debugger
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-
-/*
- * Helper structs
- */
-
-typedef union {
- void *p;
- duk_uint_t b[1];
- /* Use b[] to access the size of the union, which is strictly not
- * correct. Can't use fixed size unless there's feature detection
- * for pointer byte size.
- */
-} duk__ptr_union;
-
-/*
- * Detach handling
- */
-
-#define DUK__SET_CONN_BROKEN(thr,reason) do { \
- /* For now shared handler is fine. */ \
- duk__debug_do_detach1((thr)->heap, (reason)); \
- } while (0)
-
-DUK_LOCAL void duk__debug_do_detach1(duk_heap *heap, duk_int_t reason) {
- /* Can be called multiple times with no harm. Mark the transport
- * bad (dbg_read_cb == NULL) and clear state except for the detached
- * callback and the udata field. The detached callback is delayed
- * to the message loop so that it can be called between messages;
- * this avoids corner cases related to immediate debugger reattach
- * inside the detached callback.
- */
-
- if (heap->dbg_detaching) {
- DUK_D(DUK_DPRINT("debugger already detaching, ignore detach1"));
- return;
- }
-
- DUK_D(DUK_DPRINT("debugger transport detaching, marking transport broken"));
-
- heap->dbg_detaching = 1; /* prevent multiple in-progress detaches */
-
- if (heap->dbg_write_cb != NULL) {
- duk_hthread *thr;
-
- thr = heap->heap_thread;
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_DETACHING);
- duk_debug_write_int(thr, reason);
- duk_debug_write_eom(thr);
- }
-
- heap->dbg_read_cb = NULL;
- heap->dbg_write_cb = NULL;
- heap->dbg_peek_cb = NULL;
- heap->dbg_read_flush_cb = NULL;
- heap->dbg_write_flush_cb = NULL;
- heap->dbg_request_cb = NULL;
- /* heap->dbg_detached_cb: keep */
- /* heap->dbg_udata: keep */
- /* heap->dbg_processing: keep on purpose to avoid debugger re-entry in detaching state */
- heap->dbg_paused = 0;
- heap->dbg_state_dirty = 0;
- heap->dbg_force_restart = 0;
- heap->dbg_step_type = 0;
- heap->dbg_step_thread = NULL;
- heap->dbg_step_csindex = 0;
- heap->dbg_step_startline = 0;
- heap->dbg_have_next_byte = 0;
-
- /* Ensure there are no stale active breakpoint pointers.
- * Breakpoint list is currently kept - we could empty it
- * here but we'd need to handle refcounts correctly, and
- * we'd need a 'thr' reference for that.
- *
- * XXX: clear breakpoint on either attach or detach?
- */
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
-}
-
-DUK_LOCAL void duk__debug_do_detach2(duk_heap *heap) {
- duk_debug_detached_function detached_cb;
- void *detached_udata;
-
- /* Safe to call multiple times. */
-
- detached_cb = heap->dbg_detached_cb;
- detached_udata = heap->dbg_udata;
- heap->dbg_detached_cb = NULL;
- heap->dbg_udata = NULL;
-
- if (detached_cb) {
- /* Careful here: state must be wiped before the call
- * so that we can cleanly handle a re-attach from
- * inside the callback.
- */
- DUK_D(DUK_DPRINT("detached during message loop, delayed call to detached_cb"));
- detached_cb(detached_udata);
- }
-
- heap->dbg_detaching = 0;
-}
-
-DUK_INTERNAL void duk_debug_do_detach(duk_heap *heap) {
- duk__debug_do_detach1(heap, 0);
- duk__debug_do_detach2(heap);
-}
-
-/* Called on a read/write error: NULL all callbacks except the detached
- * callback so that we never accidentally call them after a read/write
- * error has been indicated. This is especially important for the transport
- * I/O callbacks to fulfill guaranteed callback semantics.
- */
-DUK_LOCAL void duk__debug_null_most_callbacks(duk_hthread *thr) {
- duk_heap *heap;
- heap = thr->heap;
- DUK_D(DUK_DPRINT("transport read/write error, NULL all callbacks expected detached"));
- heap->dbg_read_cb = NULL;
- heap->dbg_write_cb = NULL; /* this is especially critical to avoid another write call in detach1() */
- heap->dbg_peek_cb = NULL;
- heap->dbg_read_flush_cb = NULL;
- heap->dbg_write_flush_cb = NULL;
- heap->dbg_request_cb = NULL;
- /* keep heap->dbg_detached_cb */
-}
-
-/*
- * Debug connection peek and flush primitives
- */
-
-DUK_INTERNAL duk_bool_t duk_debug_read_peek(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to peek in detached state, return zero (= no data)"));
- return 0;
- }
- if (heap->dbg_peek_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no peek callback, return zero (= no data)"));
- return 0;
- }
-
- return (duk_bool_t) (heap->dbg_peek_cb(heap->dbg_udata) > 0);
-}
-
-DUK_INTERNAL void duk_debug_read_flush(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to read flush in detached state, ignore"));
- return;
- }
- if (heap->dbg_read_flush_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no read flush callback, ignore"));
- return;
- }
-
- heap->dbg_read_flush_cb(heap->dbg_udata);
-}
-
-DUK_INTERNAL void duk_debug_write_flush(duk_hthread *thr) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to write flush in detached state, ignore"));
- return;
- }
- if (heap->dbg_write_flush_cb == NULL) {
- DUK_DD(DUK_DDPRINT("no write flush callback, ignore"));
- return;
- }
-
- heap->dbg_write_flush_cb(heap->dbg_udata);
-}
-
-/*
- * Debug connection skip primitives
- */
-
-/* Skip fully. */
-DUK_INTERNAL void duk_debug_skip_bytes(duk_hthread *thr, duk_size_t length) {
- duk_uint8_t dummy[64];
- duk_size_t now;
-
- DUK_ASSERT(thr != NULL);
-
- while (length > 0) {
- now = (length > sizeof(dummy) ? sizeof(dummy) : length);
- duk_debug_read_bytes(thr, dummy, now);
- length -= now;
- }
-}
-
-DUK_INTERNAL void duk_debug_skip_byte(duk_hthread *thr) {
- DUK_ASSERT(thr != NULL);
-
- (void) duk_debug_read_byte(thr);
-}
-
-/*
- * Debug connection read primitives
- */
-
-/* Peek ahead in the stream one byte. */
-DUK_INTERNAL uint8_t duk_debug_peek_byte(duk_hthread *thr) {
- /* It is important not to call this if the last byte read was an EOM.
- * Reading ahead in this scenario would cause unnecessary blocking if
- * another message is not available.
- */
-
- duk_uint8_t x;
-
- x = duk_debug_read_byte(thr);
- thr->heap->dbg_have_next_byte = 1;
- thr->heap->dbg_next_byte = x;
- return x;
-}
-
-/* Read fully. */
-DUK_INTERNAL void duk_debug_read_bytes(duk_hthread *thr, duk_uint8_t *data, duk_size_t length) {
- duk_heap *heap;
- duk_uint8_t *p;
- duk_size_t left;
- duk_size_t got;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to read %ld bytes in detached state, return zero data", (long) length));
- goto fail;
- }
-
- /* NOTE: length may be zero */
- p = data;
- if (length >= 1 && heap->dbg_have_next_byte) {
- heap->dbg_have_next_byte = 0;
- *p++ = heap->dbg_next_byte;
- }
- for (;;) {
- left = (duk_size_t) ((data + length) - p);
- if (left == 0) {
- break;
- }
- DUK_ASSERT(heap->dbg_read_cb != NULL);
- DUK_ASSERT(left >= 1);
-#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE)
- left = 1;
-#endif
- got = heap->dbg_read_cb(heap->dbg_udata, (char *) p, left);
- if (got == 0 || got > left) {
- DUK_D(DUK_DPRINT("connection error during read, return zero data"));
- duk__debug_null_most_callbacks(thr); /* avoid calling write callback in detach1() */
- DUK__SET_CONN_BROKEN(thr, 1);
- goto fail;
- }
- p += got;
- }
- return;
-
- fail:
- DUK_MEMZERO((void *) data, (size_t) length);
-}
-
-DUK_INTERNAL duk_uint8_t duk_debug_read_byte(duk_hthread *thr) {
- duk_uint8_t x;
-
- x = 0; /* just in case callback is broken and won't write 'x' */
- duk_debug_read_bytes(thr, &x, 1);
- return x;
-}
-
-DUK_LOCAL duk_uint32_t duk__debug_read_uint32_raw(duk_hthread *thr) {
- duk_uint8_t buf[4];
-
- DUK_ASSERT(thr != NULL);
-
- duk_debug_read_bytes(thr, buf, 4);
- return ((duk_uint32_t) buf[0] << 24) |
- ((duk_uint32_t) buf[1] << 16) |
- ((duk_uint32_t) buf[2] << 8) |
- (duk_uint32_t) buf[3];
-}
-
-DUK_LOCAL duk_uint32_t duk__debug_read_int32_raw(duk_hthread *thr) {
- return (duk_int32_t) duk__debug_read_uint32_raw(thr);
-}
-
-DUK_LOCAL duk_uint16_t duk__debug_read_uint16_raw(duk_hthread *thr) {
- duk_uint8_t buf[2];
-
- DUK_ASSERT(thr != NULL);
-
- duk_debug_read_bytes(thr, buf, 2);
- return ((duk_uint16_t) buf[0] << 8) |
- (duk_uint16_t) buf[1];
-}
-
-DUK_INTERNAL duk_int32_t duk_debug_read_int(duk_hthread *thr) {
- duk_small_uint_t x;
- duk_small_uint_t t;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x >= 0xc0) {
- t = duk_debug_read_byte(thr);
- return (duk_int32_t) (((x - 0xc0) << 8) + t);
- } else if (x >= 0x80) {
- return (duk_int32_t) (x - 0x80);
- } else if (x == DUK_DBG_IB_INT4) {
- return (duk_int32_t) duk__debug_read_uint32_raw(thr);
- }
-
- DUK_D(DUK_DPRINT("debug connection error: failed to decode int"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return 0;
-}
-
-DUK_LOCAL duk_hstring *duk__debug_read_hstring_raw(duk_hthread *thr, duk_uint32_t len) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t buf[31];
- duk_uint8_t *p;
-
- if (len <= sizeof(buf)) {
- duk_debug_read_bytes(thr, buf, (duk_size_t) len);
- duk_push_lstring(ctx, (const char *) buf, (duk_size_t) len);
- } else {
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- DUK_ASSERT(p != NULL);
- duk_debug_read_bytes(thr, p, (duk_size_t) len);
- duk_to_string(ctx, -1);
- }
-
- return duk_require_hstring(ctx, -1);
-}
-
-DUK_INTERNAL duk_hstring *duk_debug_read_hstring(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t x;
- duk_uint32_t len;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x >= 0x60 && x <= 0x7f) {
- /* For short strings, use a fixed temp buffer. */
- len = (duk_uint32_t) (x - 0x60);
- } else if (x == DUK_DBG_IB_STR2) {
- len = (duk_uint32_t) duk__debug_read_uint16_raw(thr);
- } else if (x == DUK_DBG_IB_STR4) {
- len = (duk_uint32_t) duk__debug_read_uint32_raw(thr);
- } else {
- goto fail;
- }
-
- return duk__debug_read_hstring_raw(thr, len);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode int"));
- DUK__SET_CONN_BROKEN(thr, 1);
- duk_push_hstring_stridx(thr, DUK_STRIDX_EMPTY_STRING); /* always push some string */
- return duk_require_hstring(ctx, -1);
-}
-
-DUK_LOCAL duk_hbuffer *duk__debug_read_hbuffer_raw(duk_hthread *thr, duk_uint32_t len) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t *p;
-
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, (duk_size_t) len);
- DUK_ASSERT(p != NULL);
- duk_debug_read_bytes(thr, p, (duk_size_t) len);
-
- return duk_require_hbuffer(ctx, -1);
-}
-
-DUK_LOCAL void *duk__debug_read_pointer_raw(duk_hthread *thr) {
- duk_small_uint_t x;
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x != sizeof(pu)) {
- goto fail;
- }
- duk_debug_read_bytes(thr, (duk_uint8_t *) &pu.p, sizeof(pu));
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- return (void *) pu.p;
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode pointer"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return (void *) NULL;
-}
-
-DUK_LOCAL duk_double_t duk__debug_read_double_raw(duk_hthread *thr) {
- duk_double_union du;
-
- DUK_ASSERT(sizeof(du.uc) == 8);
- duk_debug_read_bytes(thr, (duk_uint8_t *) du.uc, sizeof(du.uc));
- DUK_DBLUNION_DOUBLE_NTOH(&du);
- return du.d;
-}
-
-#if 0
-DUK_INTERNAL duk_heaphdr *duk_debug_read_heapptr(duk_hthread *thr) {
- duk_small_uint_t x;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- if (x != DUK_DBG_IB_HEAPPTR) {
- goto fail;
- }
-
- return (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode heapptr"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-#endif
-
-DUK_INTERNAL duk_heaphdr *duk_debug_read_any_ptr(duk_hthread *thr) {
- duk_small_uint_t x;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
- switch (x) {
- case DUK_DBG_IB_OBJECT:
- case DUK_DBG_IB_POINTER:
- case DUK_DBG_IB_HEAPPTR:
- /* Accept any pointer-like value; for 'object' dvalue, read
- * and ignore the class number.
- */
- if (x == DUK_DBG_IB_OBJECT) {
- duk_debug_skip_byte(thr);
- }
- break;
- default:
- goto fail;
- }
-
- return (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode any pointer (object, pointer, heapptr)"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-
-DUK_INTERNAL duk_tval *duk_debug_read_tval(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t x;
- duk_uint_t t;
- duk_uint32_t len;
-
- DUK_ASSERT(thr != NULL);
-
- x = duk_debug_read_byte(thr);
-
- if (x >= 0xc0) {
- t = (duk_uint_t) (x - 0xc0);
- t = (t << 8) + duk_debug_read_byte(thr);
- duk_push_uint(ctx, (duk_uint_t) t);
- goto return_ptr;
- }
- if (x >= 0x80) {
- duk_push_uint(ctx, (duk_uint_t) (x - 0x80));
- goto return_ptr;
- }
- if (x >= 0x60) {
- len = (duk_uint32_t) (x - 0x60);
- duk__debug_read_hstring_raw(thr, len);
- goto return_ptr;
- }
-
- switch (x) {
- case DUK_DBG_IB_INT4: {
- duk_int32_t i = duk__debug_read_int32_raw(thr);
- duk_push_i32(ctx, i);
- break;
- }
- case DUK_DBG_IB_STR4: {
- len = duk__debug_read_uint32_raw(thr);
- duk__debug_read_hstring_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_STR2: {
- len = duk__debug_read_uint16_raw(thr);
- duk__debug_read_hstring_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_BUF4: {
- len = duk__debug_read_uint32_raw(thr);
- duk__debug_read_hbuffer_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_BUF2: {
- len = duk__debug_read_uint16_raw(thr);
- duk__debug_read_hbuffer_raw(thr, len);
- break;
- }
- case DUK_DBG_IB_UNDEFINED: {
- duk_push_undefined(ctx);
- break;
- }
- case DUK_DBG_IB_NULL: {
- duk_push_null(ctx);
- break;
- }
- case DUK_DBG_IB_TRUE: {
- duk_push_true(ctx);
- break;
- }
- case DUK_DBG_IB_FALSE: {
- duk_push_false(ctx);
- break;
- }
- case DUK_DBG_IB_NUMBER: {
- duk_double_t d;
- d = duk__debug_read_double_raw(thr);
- duk_push_number(ctx, d);
- break;
- }
- case DUK_DBG_IB_OBJECT: {
- duk_heaphdr *h;
- duk_debug_skip_byte(thr);
- h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
- duk_push_heapptr(thr, (void *) h);
- break;
- }
- case DUK_DBG_IB_POINTER: {
- void *ptr;
- ptr = duk__debug_read_pointer_raw(thr);
- duk_push_pointer(thr, ptr);
- break;
- }
- case DUK_DBG_IB_LIGHTFUNC: {
- /* XXX: Not needed for now, so not implemented. Note that
- * function pointers may have different size/layout than
- * a void pointer.
- */
- DUK_D(DUK_DPRINT("reading lightfunc values unimplemented"));
- goto fail;
- }
- case DUK_DBG_IB_HEAPPTR: {
- duk_heaphdr *h;
- h = (duk_heaphdr *) duk__debug_read_pointer_raw(thr);
- duk_push_heapptr(thr, (void *) h);
- break;
- }
- case DUK_DBG_IB_UNUSED: /* unused: not accepted in inbound messages */
- default:
- goto fail;
- }
-
- return_ptr:
- return DUK_GET_TVAL_NEGIDX(thr, -1);
-
- fail:
- DUK_D(DUK_DPRINT("debug connection error: failed to decode tval"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return NULL;
-}
-
-/*
- * Debug connection write primitives
- */
-
-/* Write fully. */
-DUK_INTERNAL void duk_debug_write_bytes(duk_hthread *thr, const duk_uint8_t *data, duk_size_t length) {
- duk_heap *heap;
- const duk_uint8_t *p;
- duk_size_t left;
- duk_size_t got;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(length == 0 || data != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_write_cb == NULL) {
- DUK_D(DUK_DPRINT("attempt to write %ld bytes in detached state, ignore", (long) length));
- return;
- }
- if (length == 0) {
- /* Avoid doing an actual write callback with length == 0,
- * because that's reserved for a write flush.
- */
- return;
- }
- DUK_ASSERT(data != NULL);
-
- p = data;
- for (;;) {
- left = (duk_size_t) ((data + length) - p);
- if (left == 0) {
- break;
- }
- DUK_ASSERT(heap->dbg_write_cb != NULL);
- DUK_ASSERT(left >= 1);
-#if defined(DUK_USE_DEBUGGER_TRANSPORT_TORTURE)
- left = 1;
-#endif
- got = heap->dbg_write_cb(heap->dbg_udata, (const char *) p, left);
- if (got == 0 || got > left) {
- duk__debug_null_most_callbacks(thr); /* avoid calling write callback in detach1() */
- DUK_D(DUK_DPRINT("connection error during write"));
- DUK__SET_CONN_BROKEN(thr, 1);
- return;
- }
- p += got;
- }
-}
-
-DUK_INTERNAL void duk_debug_write_byte(duk_hthread *thr, duk_uint8_t x) {
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &x, 1);
-}
-
-DUK_INTERNAL void duk_debug_write_unused(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED);
-}
-
-DUK_INTERNAL void duk_debug_write_undefined(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED);
-}
-
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL void duk_debug_write_null(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_NULL);
-}
-#endif
-
-DUK_INTERNAL void duk_debug_write_boolean(duk_hthread *thr, duk_uint_t val) {
- duk_debug_write_byte(thr, val ? DUK_DBG_IB_TRUE : DUK_DBG_IB_FALSE);
-}
-
-/* Write signed 32-bit integer. */
-DUK_INTERNAL void duk_debug_write_int(duk_hthread *thr, duk_int32_t x) {
- duk_uint8_t buf[5];
- duk_size_t len;
-
- DUK_ASSERT(thr != NULL);
-
- if (x >= 0 && x <= 0x3fL) {
- buf[0] = (duk_uint8_t) (0x80 + x);
- len = 1;
- } else if (x >= 0 && x <= 0x3fffL) {
- buf[0] = (duk_uint8_t) (0xc0 + (x >> 8));
- buf[1] = (duk_uint8_t) (x & 0xff);
- len = 2;
- } else {
- /* Signed integers always map to 4 bytes now. */
- buf[0] = (duk_uint8_t) DUK_DBG_IB_INT4;
- buf[1] = (duk_uint8_t) ((x >> 24) & 0xff);
- buf[2] = (duk_uint8_t) ((x >> 16) & 0xff);
- buf[3] = (duk_uint8_t) ((x >> 8) & 0xff);
- buf[4] = (duk_uint8_t) (x & 0xff);
- len = 5;
- }
- duk_debug_write_bytes(thr, buf, len);
-}
-
-/* Write unsigned 32-bit integer. */
-DUK_INTERNAL void duk_debug_write_uint(duk_hthread *thr, duk_uint32_t x) {
- /* The debugger protocol doesn't support a plain integer encoding for
- * the full 32-bit unsigned range (only 32-bit signed). For now,
- * unsigned 32-bit values simply written as signed ones. This is not
- * a concrete issue except for 32-bit heaphdr fields. Proper solutions
- * would be to (a) write such integers as IEEE doubles or (b) add an
- * unsigned 32-bit dvalue.
- */
- if (x >= 0x80000000UL) {
- DUK_D(DUK_DPRINT("writing unsigned integer 0x%08lx as signed integer",
- (long) x));
- }
- duk_debug_write_int(thr, (duk_int32_t) x);
-}
-
-DUK_INTERNAL void duk_debug_write_strbuf(duk_hthread *thr, const char *data, duk_size_t length, duk_uint8_t marker_base) {
- duk_uint8_t buf[5];
- duk_size_t buflen;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(length == 0 || data != NULL);
-
- if (length <= 0x1fUL && marker_base == DUK_DBG_IB_STR4) {
- /* For strings, special form for short lengths. */
- buf[0] = (duk_uint8_t) (0x60 + length);
- buflen = 1;
- } else if (length <= 0xffffUL) {
- buf[0] = (duk_uint8_t) (marker_base + 1);
- buf[1] = (duk_uint8_t) (length >> 8);
- buf[2] = (duk_uint8_t) (length & 0xff);
- buflen = 3;
- } else {
- buf[0] = (duk_uint8_t) marker_base;
- buf[1] = (duk_uint8_t) (length >> 24);
- buf[2] = (duk_uint8_t) ((length >> 16) & 0xff);
- buf[3] = (duk_uint8_t) ((length >> 8) & 0xff);
- buf[4] = (duk_uint8_t) (length & 0xff);
- buflen = 5;
- }
-
- duk_debug_write_bytes(thr, (const duk_uint8_t *) buf, buflen);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) data, length);
-}
-
-DUK_INTERNAL void duk_debug_write_string(duk_hthread *thr, const char *data, duk_size_t length) {
- duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_STR4);
-}
-
-DUK_INTERNAL void duk_debug_write_cstring(duk_hthread *thr, const char *data) {
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_string(thr,
- data,
- data ? DUK_STRLEN(data) : 0);
-}
-
-DUK_INTERNAL void duk_debug_write_hstring(duk_hthread *thr, duk_hstring *h) {
- DUK_ASSERT(thr != NULL);
-
- /* XXX: differentiate null pointer from empty string? */
- duk_debug_write_string(thr,
- (h != NULL ? (const char *) DUK_HSTRING_GET_DATA(h) : NULL),
- (h != NULL ? (duk_size_t) DUK_HSTRING_GET_BYTELEN(h) : 0));
-}
-
-DUK_LOCAL void duk__debug_write_hstring_safe_top(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_debug_write_hstring(thr, duk_safe_to_hstring(ctx, -1));
-}
-
-DUK_INTERNAL void duk_debug_write_buffer(duk_hthread *thr, const char *data, duk_size_t length) {
- duk_debug_write_strbuf(thr, data, length, DUK_DBG_IB_BUF4);
-}
-
-DUK_INTERNAL void duk_debug_write_hbuffer(duk_hthread *thr, duk_hbuffer *h) {
- DUK_ASSERT(thr != NULL);
-
- duk_debug_write_buffer(thr,
- (h != NULL ? (const char *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h) : NULL),
- (h != NULL ? (duk_size_t) DUK_HBUFFER_GET_SIZE(h) : 0));
-}
-
-DUK_LOCAL void duk__debug_write_pointer_raw(duk_hthread *thr, void *ptr, duk_uint8_t ibyte) {
- duk_uint8_t buf[2];
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(sizeof(ptr) >= 1 && sizeof(ptr) <= 16);
- /* ptr may be NULL */
-
- buf[0] = ibyte;
- buf[1] = sizeof(pu);
- duk_debug_write_bytes(thr, buf, 2);
- pu.p = (void *) ptr;
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t) sizeof(pu));
-}
-
-DUK_INTERNAL void duk_debug_write_pointer(duk_hthread *thr, void *ptr) {
- duk__debug_write_pointer_raw(thr, ptr, DUK_DBG_IB_POINTER);
-}
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP) || defined(DUK_USE_DEBUGGER_INSPECT)
-DUK_INTERNAL void duk_debug_write_heapptr(duk_hthread *thr, duk_heaphdr *h) {
- duk__debug_write_pointer_raw(thr, (void *) h, DUK_DBG_IB_HEAPPTR);
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP || DUK_USE_DEBUGGER_INSPECT */
-
-DUK_INTERNAL void duk_debug_write_hobject(duk_hthread *thr, duk_hobject *obj) {
- duk_uint8_t buf[3];
- duk__ptr_union pu;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(sizeof(obj) >= 1 && sizeof(obj) <= 16);
- DUK_ASSERT(obj != NULL);
-
- buf[0] = DUK_DBG_IB_OBJECT;
- buf[1] = (duk_uint8_t) DUK_HOBJECT_GET_CLASS_NUMBER(obj);
- buf[2] = sizeof(pu);
- duk_debug_write_bytes(thr, buf, 3);
- pu.p = (void *) obj;
-#if defined(DUK_USE_INTEGER_LE)
- duk_byteswap_bytes((duk_uint8_t *) pu.b, sizeof(pu));
-#endif
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &pu.p, (duk_size_t) sizeof(pu));
-}
-
-DUK_INTERNAL void duk_debug_write_tval(duk_hthread *thr, duk_tval *tv) {
- duk_c_function lf_func;
- duk_small_uint_t lf_flags;
- duk_uint8_t buf[4];
- duk_double_union du1;
- duk_double_union du2;
- duk_int32_t i32;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- duk_debug_write_byte(thr, DUK_DBG_IB_UNDEFINED);
- break;
- case DUK_TAG_UNUSED:
- duk_debug_write_byte(thr, DUK_DBG_IB_UNUSED);
- break;
- case DUK_TAG_NULL:
- duk_debug_write_byte(thr, DUK_DBG_IB_NULL);
- break;
- case DUK_TAG_BOOLEAN:
- DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv) == 0 ||
- DUK_TVAL_GET_BOOLEAN(tv) == 1);
- duk_debug_write_boolean(thr, DUK_TVAL_GET_BOOLEAN(tv));
- break;
- case DUK_TAG_POINTER:
- duk_debug_write_pointer(thr, (void *) DUK_TVAL_GET_POINTER(tv));
- break;
- case DUK_TAG_LIGHTFUNC:
- DUK_TVAL_GET_LIGHTFUNC(tv, lf_func, lf_flags);
- buf[0] = DUK_DBG_IB_LIGHTFUNC;
- buf[1] = (duk_uint8_t) (lf_flags >> 8);
- buf[2] = (duk_uint8_t) (lf_flags & 0xff);
- buf[3] = sizeof(lf_func);
- duk_debug_write_bytes(thr, buf, 4);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) &lf_func, sizeof(lf_func));
- break;
- case DUK_TAG_STRING:
- duk_debug_write_hstring(thr, DUK_TVAL_GET_STRING(tv));
- break;
- case DUK_TAG_OBJECT:
- duk_debug_write_hobject(thr, DUK_TVAL_GET_OBJECT(tv));
- break;
- case DUK_TAG_BUFFER:
- duk_debug_write_hbuffer(thr, DUK_TVAL_GET_BUFFER(tv));
- break;
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default:
- /* Numbers are normalized to big (network) endian. We can
- * (but are not required) to use integer dvalues when there's
- * no loss of precision.
- *
- * XXX: share check with other code; this check is slow but
- * reliable and doesn't require careful exponent/mantissa
- * mask tricks as in the fastint downgrade code.
- */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- du1.d = DUK_TVAL_GET_NUMBER(tv);
- i32 = (duk_int32_t) du1.d;
- du2.d = (duk_double_t) i32;
-
- DUK_DD(DUK_DDPRINT("i32=%ld du1=%02x%02x%02x%02x%02x%02x%02x%02x "
- "du2=%02x%02x%02x%02x%02x%02x%02x%02x",
- (long) i32,
- (unsigned int) du1.uc[0], (unsigned int) du1.uc[1],
- (unsigned int) du1.uc[2], (unsigned int) du1.uc[3],
- (unsigned int) du1.uc[4], (unsigned int) du1.uc[5],
- (unsigned int) du1.uc[6], (unsigned int) du1.uc[7],
- (unsigned int) du2.uc[0], (unsigned int) du2.uc[1],
- (unsigned int) du2.uc[2], (unsigned int) du2.uc[3],
- (unsigned int) du2.uc[4], (unsigned int) du2.uc[5],
- (unsigned int) du2.uc[6], (unsigned int) du2.uc[7]));
-
- if (DUK_MEMCMP((const void *) du1.uc, (const void *) du2.uc, sizeof(du1.uc)) == 0) {
- duk_debug_write_int(thr, i32);
- } else {
- DUK_DBLUNION_DOUBLE_HTON(&du1);
- duk_debug_write_byte(thr, DUK_DBG_IB_NUMBER);
- duk_debug_write_bytes(thr, (const duk_uint8_t *) du1.uc, sizeof(du1.uc));
- }
- }
-}
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
-/* Variant for writing duk_tvals so that any heap allocated values are
- * written out as tagged heap pointers.
- */
-DUK_LOCAL void duk__debug_write_tval_heapptr(duk_hthread *thr, duk_tval *tv) {
- if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- duk_debug_write_heapptr(thr, h);
- } else {
- duk_debug_write_tval(thr, tv);
- }
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
-
-/*
- * Debug connection message write helpers
- */
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_debug_write_request(duk_hthread *thr, duk_small_uint_t command) {
- duk_debug_write_byte(thr, DUK_DBG_IB_REQUEST);
- duk_debug_write_int(thr, command);
-}
-#endif
-
-DUK_INTERNAL void duk_debug_write_reply(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_REPLY);
-}
-
-DUK_INTERNAL void duk_debug_write_error_eom(duk_hthread *thr, duk_small_uint_t err_code, const char *msg) {
- /* Allow NULL 'msg' */
- duk_debug_write_byte(thr, DUK_DBG_IB_ERROR);
- duk_debug_write_int(thr, (duk_int32_t) err_code);
- duk_debug_write_cstring(thr, msg);
- duk_debug_write_eom(thr);
-}
-
-DUK_INTERNAL void duk_debug_write_notify(duk_hthread *thr, duk_small_uint_t command) {
- duk_debug_write_byte(thr, DUK_DBG_IB_NOTIFY);
- duk_debug_write_int(thr, command);
-}
-
-DUK_INTERNAL void duk_debug_write_eom(duk_hthread *thr) {
- duk_debug_write_byte(thr, DUK_DBG_IB_EOM);
-
- /* As an initial implementation, write flush after every EOM (and the
- * version identifier). A better implementation would flush only when
- * Duktape is finished processing messages so that a flush only happens
- * after all outbound messages are finished on that occasion.
- */
- duk_debug_write_flush(thr);
-}
-
-/*
- * Status message and helpers
- */
-
-DUK_INTERNAL duk_uint_fast32_t duk_debug_curr_line(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_uint_fast32_t line;
- duk_uint_fast32_t pc;
-
- act = duk_hthread_get_current_activation(thr); /* may be NULL */
- if (act == NULL) {
- return 0;
- }
-
- /* We're conceptually between two opcodes; act->pc indicates the next
- * instruction to be executed. This is usually the correct pc/line to
- * indicate in Status. (For the 'debugger' statement this now reports
- * the pc/line after the debugger statement because the debugger opcode
- * has already been executed.)
- */
-
- pc = duk_hthread_get_act_curr_pc(thr, act);
-
- /* XXX: this should be optimized to be a raw query and avoid valstack
- * operations if possible.
- */
- duk_push_tval(ctx, &act->tv_func);
- line = duk_hobject_pc2line_query(ctx, -1, pc);
- duk_pop(ctx);
- return line;
-}
-
-DUK_INTERNAL void duk_debug_send_status(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_STATUS);
- duk_debug_write_int(thr, thr->heap->dbg_paused);
-
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* unsigned */
- if (thr->callstack_top == 0) {
- duk_debug_write_undefined(thr);
- duk_debug_write_undefined(thr);
- duk_debug_write_int(thr, 0);
- duk_debug_write_int(thr, 0);
- } else {
- act = thr->callstack + thr->callstack_top - 1;
- duk_push_tval(ctx, &act->tv_func);
- duk_get_prop_string(ctx, -1, "fileName");
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_string(ctx, -2, "name");
- duk__debug_write_hstring_safe_top(thr);
- duk_pop_3(ctx);
- /* Report next pc/line to be executed. */
- duk_debug_write_uint(thr, (duk_uint32_t) duk_debug_curr_line(thr));
- duk_debug_write_uint(thr, (duk_uint32_t) duk_hthread_get_act_curr_pc(thr, act));
- }
-
- duk_debug_write_eom(thr);
-}
-
-#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
-DUK_INTERNAL void duk_debug_send_throw(duk_hthread *thr, duk_bool_t fatal) {
- /*
- * NFY <int: 5> <int: fatal> <str: msg> <str: filename> <int: linenumber> EOM
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_uint32_t pc;
-
- DUK_ASSERT(thr->valstack_top > thr->valstack); /* At least: ... [err] */
-
- duk_debug_write_notify(thr, DUK_DBG_CMD_THROW);
- duk_debug_write_int(thr, fatal);
-
- /* Report thrown value to client coerced to string */
- duk_dup(ctx, -1);
- duk__debug_write_hstring_safe_top(thr);
- duk_pop(ctx);
-
- if (duk_is_error(ctx, -1)) {
- /* Error instance, use augmented error data directly */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_LINE_NUMBER);
- duk_debug_write_uint(thr, duk_get_uint(ctx, -1));
- } else {
- /* For anything other than an Error instance, we calculate the error
- * location directly from the current activation.
- */
- act = thr->callstack + thr->callstack_top - 1;
- duk_push_tval(ctx, &act->tv_func);
- duk_get_prop_string(ctx, -1, "fileName");
- duk__debug_write_hstring_safe_top(thr);
- pc = duk_hthread_get_act_prev_pc(thr, act);
- duk_debug_write_uint(thr, (duk_uint32_t) duk_hobject_pc2line_query(ctx, -2, pc));
- }
- duk_pop_2(ctx); /* shared pop */
-
- duk_debug_write_eom(thr);
-}
-#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY */
-
-/*
- * Debug message processing
- */
-
-/* Skip dvalue. */
-DUK_LOCAL duk_bool_t duk__debug_skip_dvalue(duk_hthread *thr) {
- duk_uint8_t x;
- duk_uint32_t len;
-
- x = duk_debug_read_byte(thr);
-
- if (x >= 0xc0) {
- duk_debug_skip_byte(thr);
- return 0;
- }
- if (x >= 0x80) {
- return 0;
- }
- if (x >= 0x60) {
- duk_debug_skip_bytes(thr, x - 0x60);
- return 0;
- }
- switch(x) {
- case DUK_DBG_IB_EOM:
- return 1; /* Return 1: got EOM */
- case DUK_DBG_IB_REQUEST:
- case DUK_DBG_IB_REPLY:
- case DUK_DBG_IB_ERROR:
- case DUK_DBG_IB_NOTIFY:
- break;
- case DUK_DBG_IB_INT4:
- (void) duk__debug_read_uint32_raw(thr);
- break;
- case DUK_DBG_IB_STR4:
- case DUK_DBG_IB_BUF4:
- len = duk__debug_read_uint32_raw(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_STR2:
- case DUK_DBG_IB_BUF2:
- len = duk__debug_read_uint16_raw(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_UNUSED:
- case DUK_DBG_IB_UNDEFINED:
- case DUK_DBG_IB_NULL:
- case DUK_DBG_IB_TRUE:
- case DUK_DBG_IB_FALSE:
- break;
- case DUK_DBG_IB_NUMBER:
- duk_debug_skip_bytes(thr, 8);
- break;
- case DUK_DBG_IB_OBJECT:
- duk_debug_skip_byte(thr);
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_POINTER:
- case DUK_DBG_IB_HEAPPTR:
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- case DUK_DBG_IB_LIGHTFUNC:
- duk_debug_skip_bytes(thr, 2);
- len = duk_debug_read_byte(thr);
- duk_debug_skip_bytes(thr, len);
- break;
- default:
- goto fail;
- }
-
- return 0;
-
- fail:
- DUK__SET_CONN_BROKEN(thr, 1);
- return 1; /* Pretend like we got EOM */
-}
-
-/* Skip dvalues to EOM. */
-DUK_LOCAL void duk__debug_skip_to_eom(duk_hthread *thr) {
- for (;;) {
- if (duk__debug_skip_dvalue(thr)) {
- break;
- }
- }
-}
-
-/*
- * Simple commands
- */
-
-DUK_LOCAL void duk__debug_handle_basic_info(duk_hthread *thr, duk_heap *heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command Version"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, DUK_VERSION);
- duk_debug_write_cstring(thr, DUK_GIT_DESCRIBE);
- duk_debug_write_cstring(thr, DUK_USE_TARGET_INFO);
-#if defined(DUK_USE_DOUBLE_LE)
- duk_debug_write_int(thr, 1);
-#elif defined(DUK_USE_DOUBLE_ME)
- duk_debug_write_int(thr, 2);
-#elif defined(DUK_USE_DOUBLE_BE)
- duk_debug_write_int(thr, 3);
-#else
- duk_debug_write_int(thr, 0);
-#endif
- duk_debug_write_int(thr, (duk_int_t) sizeof(void *));
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_trigger_status(duk_hthread *thr, duk_heap *heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command TriggerStatus"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
- heap->dbg_state_dirty = 1;
-}
-
-DUK_LOCAL void duk__debug_handle_pause(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command Pause"));
-
- DUK_HEAP_SET_PAUSED(heap);
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_resume(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command Resume"));
-
- DUK_HEAP_CLEAR_PAUSED(heap);
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_step(duk_hthread *thr, duk_heap *heap, duk_int32_t cmd) {
- duk_small_uint_t step_type;
- duk_uint_fast32_t line;
-
- DUK_D(DUK_DPRINT("debug command StepInto/StepOver/StepOut: %d", (int) cmd));
-
- if (cmd == DUK_DBG_CMD_STEPINTO) {
- step_type = DUK_STEP_TYPE_INTO;
- } else if (cmd == DUK_DBG_CMD_STEPOVER) {
- step_type = DUK_STEP_TYPE_OVER;
- } else {
- DUK_ASSERT(cmd == DUK_DBG_CMD_STEPOUT);
- step_type = DUK_STEP_TYPE_OUT;
- }
-
- line = duk_debug_curr_line(thr);
- if (line > 0) {
- heap->dbg_paused = 0;
- heap->dbg_step_type = step_type;
- heap->dbg_step_thread = thr;
- heap->dbg_step_csindex = thr->callstack_top - 1;
- heap->dbg_step_startline = line;
- heap->dbg_state_dirty = 1;
- } else {
- DUK_D(DUK_DPRINT("cannot determine current line, stepinto/stepover/stepout ignored"));
- }
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_list_break(duk_hthread *thr, duk_heap *heap) {
- duk_small_int_t i;
-
- DUK_D(DUK_DPRINT("debug command ListBreak"));
- duk_debug_write_reply(thr);
- for (i = 0; i < (duk_small_int_t) heap->dbg_breakpoint_count; i++) {
- duk_debug_write_hstring(thr, heap->dbg_breakpoints[i].filename);
- duk_debug_write_uint(thr, (duk_uint32_t) heap->dbg_breakpoints[i].line);
- }
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_add_break(duk_hthread *thr, duk_heap *heap) {
- duk_hstring *filename;
- duk_uint32_t linenumber;
- duk_small_int_t idx;
-
- DUK_UNREF(heap);
-
- filename = duk_debug_read_hstring(thr);
- linenumber = (duk_uint32_t) duk_debug_read_int(thr);
- DUK_D(DUK_DPRINT("debug command AddBreak: %!O:%ld", (duk_hobject *) filename, (long) linenumber));
- idx = duk_debug_add_breakpoint(thr, filename, linenumber);
- if (idx >= 0) {
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, (duk_int32_t) idx);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_TOOMANY, "no space for breakpoint");
- }
-}
-
-DUK_LOCAL void duk__debug_handle_del_break(duk_hthread *thr, duk_heap *heap) {
- duk_small_uint_t idx;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command DelBreak"));
- idx = (duk_small_uint_t) duk_debug_read_int(thr);
- if (duk_debug_remove_breakpoint(thr, idx)) {
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid breakpoint index");
- }
-}
-
-DUK_LOCAL void duk__debug_handle_get_var(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *str;
- duk_bool_t rc;
- duk_int32_t level;
-
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command GetVar"));
-
- str = duk_debug_read_hstring(thr); /* push to stack */
- DUK_ASSERT(str != NULL);
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for GetVar"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack level");
- return;
- }
- } else {
- level = -1;
- }
-
- if (thr->callstack_top > 0) {
- rc = duk_js_getvar_activation(thr,
- thr->callstack + thr->callstack_top + level,
- str,
- 0);
- } else {
- /* No activation, no variable access. Could also pretend
- * we're in the global program context and read stuff off
- * the global object.
- */
- DUK_D(DUK_DPRINT("callstack empty, no activation -> ignore getvar"));
- rc = 0;
- }
-
- duk_debug_write_reply(thr);
- if (rc) {
- duk_debug_write_int(thr, 1);
- DUK_ASSERT(duk_get_tval(ctx, -2) != NULL);
- duk_debug_write_tval(thr, duk_get_tval(ctx, -2));
- } else {
- duk_debug_write_int(thr, 0);
- duk_debug_write_unused(thr);
- }
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_put_var(duk_hthread *thr, duk_heap *heap) {
- duk_hstring *str;
- duk_tval *tv;
- duk_int32_t level;
-
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command PutVar"));
-
- str = duk_debug_read_hstring(thr); /* push to stack */
- DUK_ASSERT(str != NULL);
- tv = duk_debug_read_tval(thr);
- if (tv == NULL) {
- /* detached */
- return;
- }
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for PutVar"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack level");
- return;
- }
- } else {
- level = -1;
- }
-
- if (thr->callstack_top > 0) {
- duk_js_putvar_activation(thr,
- thr->callstack + thr->callstack_top + level,
- str,
- tv,
- 0);
- } else {
- DUK_D(DUK_DPRINT("callstack empty, no activation -> ignore putvar"));
- }
-
- /* XXX: Current putvar implementation doesn't have a success flag,
- * add one and send to debug client?
- */
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_call_stack(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_hthread *curr_thr = thr;
- duk_activation *curr_act;
- duk_uint_fast32_t pc;
- duk_uint_fast32_t line;
- duk_size_t i;
-
- DUK_ASSERT(thr != NULL);
- DUK_UNREF(heap);
-
- duk_debug_write_reply(thr);
- while (curr_thr != NULL) {
- i = curr_thr->callstack_top;
- while (i > 0) {
- i--;
- curr_act = curr_thr->callstack + i;
-
- /* PC/line semantics here are:
- * - For callstack top we're conceptually between two
- * opcodes and current PC indicates next line to
- * execute, so report that (matches Status).
- * - For other activations we're conceptually still
- * executing the instruction at PC-1, so report that
- * (matches error stacktrace behavior).
- * - See: https://github.com/svaarala/duktape/issues/281
- */
-
- /* XXX: optimize to use direct reads, i.e. avoid
- * value stack operations.
- */
- duk_push_tval(ctx, &curr_act->tv_func);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- duk__debug_write_hstring_safe_top(thr);
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME);
- duk__debug_write_hstring_safe_top(thr);
- pc = duk_hthread_get_act_curr_pc(thr, curr_act);
- if (i != curr_thr->callstack_top - 1 && pc > 0) {
- pc--;
- }
- line = duk_hobject_pc2line_query(ctx, -3, pc);
- duk_debug_write_uint(thr, (duk_uint32_t) line);
- duk_debug_write_uint(thr, (duk_uint32_t) pc);
- duk_pop_3(ctx);
- }
- curr_thr = curr_thr->resumer;
- }
- /* SCANBUILD: warning about 'thr' potentially being NULL here,
- * warning is incorrect because thr != NULL always here.
- */
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_locals(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *curr_act;
- duk_int32_t level;
- duk_hstring *varname;
-
- DUK_UNREF(heap);
-
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for GetLocals"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack level");
- return;
- }
- duk_debug_write_reply(thr);
- } else {
- duk_debug_write_reply(thr);
- if (thr->callstack_top == 0) {
- goto callstack_empty;
- }
- level = -1;
- }
-
- curr_act = thr->callstack + thr->callstack_top + level;
-
- /* XXX: several nice-to-have improvements here:
- * - Use direct reads avoiding value stack operations
- * - Avoid triggering getters, indicate getter values to debug client
- * - If side effects are possible, add error catching
- */
-
- duk_push_tval(ctx, &curr_act->tv_func);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VARMAP);
- if (duk_is_object(ctx, -1)) {
- duk_enum(ctx, -1, 0 /*enum_flags*/);
- while (duk_next(ctx, -1 /*enum_index*/, 0 /*get_value*/)) {
- varname = duk_get_hstring(ctx, -1);
- DUK_ASSERT(varname != NULL);
-
- duk_js_getvar_activation(thr, curr_act, varname, 0 /*throw_flag*/);
- /* [ ... func varmap enum key value this ] */
- duk_debug_write_hstring(thr, duk_get_hstring(ctx, -3));
- duk_debug_write_tval(thr, duk_get_tval(ctx, -2));
- duk_pop_3(ctx); /* -> [ ... func varmap enum ] */
- }
- } else {
- DUK_D(DUK_DPRINT("varmap is not an object in GetLocals, ignore"));
- }
-
- callstack_empty:
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_eval(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t call_flags;
- duk_int_t call_ret;
- duk_small_int_t eval_err;
- duk_int32_t level;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command Eval"));
-
- /* The eval code is executed within the lexical environment of a specified
- * activation. For now, use global object eval() function, with the eval
- * considered a 'direct call to eval'.
- *
- * Callstack level for debug commands only affects scope -- the callstack
- * as seen by, e.g. Duktape.act() will be the same regardless.
- */
-
- /* nargs == 2 so we can pass a callstack level to eval(). */
- duk_push_c_function(ctx, duk_bi_global_object_eval, 2 /*nargs*/);
- duk_push_undefined(ctx); /* 'this' binding shouldn't matter here */
-
- (void) duk_debug_read_hstring(thr);
- if (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- level = duk_debug_read_int(thr); /* optional callstack level */
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for Eval"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack level");
- return;
- }
- }
- else {
- level = -1;
- }
- DUK_ASSERT(level < 0 && -level <= (duk_int32_t) thr->callstack_top);
- duk_push_int(ctx, level - 1); /* compensate for eval() call */
-
- /* [ ... eval "eval" eval_input level ] */
-
- call_flags = 0;
- if (thr->callstack_top >= (duk_size_t) -level) {
- duk_activation *act;
- duk_hobject *fun;
-
- act = thr->callstack + thr->callstack_top + level;
- fun = DUK_ACT_GET_FUNC(act);
- if (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(fun)) {
- /* Direct eval requires that there's a current
- * activation and it is an Ecmascript function.
- * When Eval is executed from e.g. cooperate API
- * call we'll need to do an indirect eval instead.
- */
- call_flags |= DUK_CALL_FLAG_DIRECT_EVAL;
- }
- }
-
- call_ret = duk_handle_call_protected(thr, 2 /*num_stack_args*/, call_flags);
-
- if (call_ret == DUK_EXEC_SUCCESS) {
- eval_err = 0;
- /* Use result value as is. */
- } else {
- /* For errors a string coerced result is most informative
- * right now, as the debug client doesn't have the capability
- * to traverse the error object.
- */
- eval_err = 1;
- duk_safe_to_string(ctx, -1);
- }
-
- /* [ ... result ] */
-
- duk_debug_write_reply(thr);
- duk_debug_write_int(thr, (duk_int32_t) eval_err);
- DUK_ASSERT(duk_get_tval(ctx, -1) != NULL);
- duk_debug_write_tval(thr, duk_get_tval(ctx, -1));
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_detach(duk_hthread *thr, duk_heap *heap) {
- DUK_UNREF(heap);
- DUK_D(DUK_DPRINT("debug command Detach"));
-
- duk_debug_write_reply(thr);
- duk_debug_write_eom(thr);
-
- DUK_D(DUK_DPRINT("debug connection detached, mark broken"));
- DUK__SET_CONN_BROKEN(thr, 0); /* not an error */
-}
-
-DUK_LOCAL void duk__debug_handle_apprequest(duk_hthread *thr, duk_heap *heap) {
- duk_context *ctx = (duk_context *) thr;
- duk_idx_t old_top;
-
- DUK_D(DUK_DPRINT("debug command AppRequest"));
-
- old_top = duk_get_top(ctx); /* save stack top */
-
- if (heap->dbg_request_cb != NULL) {
- duk_idx_t nrets;
- duk_idx_t nvalues = 0;
- duk_idx_t top, idx;
-
- /* Read tvals from the message and push them onto the valstack,
- * then call the request callback to process the request.
- */
- while (duk_debug_peek_byte(thr) != DUK_DBG_IB_EOM) {
- duk_tval *tv;
- if (!duk_check_stack(ctx, 1)) {
- DUK_D(DUK_DPRINT("failed to allocate space for request dvalue(s)"));
- goto fail;
- }
- tv = duk_debug_read_tval(thr); /* push to stack */
- if (tv == NULL) {
- /* detached */
- return;
- }
- nvalues++;
- }
- DUK_ASSERT(duk_get_top(ctx) == old_top + nvalues);
-
- /* Request callback should push values for reply to client onto valstack */
- DUK_D(DUK_DPRINT("calling into AppRequest request_cb with nvalues=%ld, old_top=%ld, top=%ld",
- (long) nvalues, (long) old_top, (long) duk_get_top(ctx)));
- nrets = heap->dbg_request_cb(ctx, heap->dbg_udata, nvalues);
- DUK_D(DUK_DPRINT("returned from AppRequest request_cb; nvalues=%ld -> nrets=%ld, old_top=%ld, top=%ld",
- (long) nvalues, (long) nrets, (long) old_top, (long) duk_get_top(ctx)));
- if (nrets >= 0) {
- DUK_ASSERT(duk_get_top(ctx) >= old_top + nrets);
- if (duk_get_top(ctx) < old_top + nrets) {
- DUK_D(DUK_DPRINT("AppRequest callback doesn't match value stack configuration, "
- "top=%ld < old_top=%ld + nrets=%ld; "
- "this might mean it's unsafe to continue!",
- (long) duk_get_top(ctx), (long) old_top, (long) nrets));
- goto fail;
- }
-
- /* Reply with tvals pushed by request callback */
- duk_debug_write_byte(thr, DUK_DBG_IB_REPLY);
- top = duk_get_top(ctx);
- for (idx = top - nrets; idx < top; idx++) {
- duk_debug_write_tval(thr, DUK_GET_TVAL_POSIDX(ctx, idx));
- }
- duk_debug_write_eom(thr);
- } else {
- DUK_ASSERT(duk_get_top(ctx) >= old_top + 1);
- if (duk_get_top(ctx) < old_top + 1) {
- DUK_D(DUK_DPRINT("request callback return value doesn't match value stack configuration"));
- goto fail;
- }
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_APPLICATION, duk_get_string(ctx, -1));
- }
-
- duk_set_top(ctx, old_top); /* restore stack top */
- } else {
- DUK_D(DUK_DPRINT("no request callback, treat AppRequest as unsupported"));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED, "AppRequest unsupported by target");
- }
-
- return;
-
- fail:
- duk_set_top(ctx, old_top); /* restore stack top */
- DUK__SET_CONN_BROKEN(thr, 1);
-}
-
-/*
- * DumpHeap command
- */
-
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
-/* XXX: this has some overlap with object inspection; remove this and make
- * DumpHeap return lists of heapptrs instead?
- */
-DUK_LOCAL void duk__debug_dump_heaphdr(duk_hthread *thr, duk_heap *heap, duk_heaphdr *hdr) {
- DUK_UNREF(heap);
-
- duk_debug_write_heapptr(thr, hdr);
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_TYPE(hdr));
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_FLAGS_RAW(hdr));
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HEAPHDR_GET_REFCOUNT(hdr));
-#else
- duk_debug_write_int(thr, (duk_int32_t) -1);
-#endif
-
- switch (DUK_HEAPHDR_GET_TYPE(hdr)) {
- case DUK_HTYPE_STRING: {
- duk_hstring *h = (duk_hstring *) hdr;
-
- duk_debug_write_uint(thr, (duk_int32_t) DUK_HSTRING_GET_BYTELEN(h));
- duk_debug_write_uint(thr, (duk_int32_t) DUK_HSTRING_GET_CHARLEN(h));
- duk_debug_write_uint(thr, (duk_int32_t) DUK_HSTRING_GET_HASH(h));
- duk_debug_write_hstring(thr, h);
- break;
- }
- case DUK_HTYPE_OBJECT: {
- duk_hobject *h = (duk_hobject *) hdr;
- duk_hstring *k;
- duk_uint_fast32_t i;
-
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_CLASS_NUMBER(h));
- duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h));
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ESIZE(h));
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ENEXT(h));
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_ASIZE(h));
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_GET_HSIZE(h));
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HOBJECT_E_GET_FLAGS(heap, h, i));
- k = DUK_HOBJECT_E_GET_KEY(heap, h, i);
- duk_debug_write_heapptr(thr, (duk_heaphdr *) k);
- if (k == NULL) {
- duk_debug_write_int(thr, 0); /* isAccessor */
- duk_debug_write_unused(thr);
- continue;
- }
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) {
- duk_debug_write_int(thr, 1); /* isAccessor */
- duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get);
- duk_debug_write_heapptr(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set);
- } else {
- duk_debug_write_int(thr, 0); /* isAccessor */
-
- duk__debug_write_tval_heapptr(thr, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v);
- }
- }
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
- /* Note: array dump will include elements beyond
- * 'length'.
- */
- duk__debug_write_tval_heapptr(thr, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i));
- }
- break;
- }
- case DUK_HTYPE_BUFFER: {
- duk_hbuffer *h = (duk_hbuffer *) hdr;
-
- duk_debug_write_uint(thr, (duk_uint32_t) DUK_HBUFFER_GET_SIZE(h));
- duk_debug_write_buffer(thr, (const char *) DUK_HBUFFER_GET_DATA_PTR(heap, h), (duk_size_t) DUK_HBUFFER_GET_SIZE(h));
- break;
- }
- default: {
- DUK_D(DUK_DPRINT("invalid htype: %d", (int) DUK_HEAPHDR_GET_TYPE(hdr)));
- }
- }
-}
-
-DUK_LOCAL void duk__debug_dump_heap_allocated(duk_hthread *thr, duk_heap *heap) {
- duk_heaphdr *hdr;
-
- hdr = heap->heap_allocated;
- while (hdr != NULL) {
- duk__debug_dump_heaphdr(thr, heap, hdr);
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-
-#if defined(DUK_USE_STRTAB_CHAIN)
-DUK_LOCAL void duk__debug_dump_strtab_chain(duk_hthread *thr, duk_heap *heap) {
- duk_uint_fast32_t i, j;
- duk_strtab_entry *e;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *lst;
-#else
- duk_hstring **lst;
-#endif
- duk_hstring *h;
-
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
- e = heap->strtable + i;
- if (e->listlen > 0) {
-#if defined(DUK_USE_HEAPPTR16)
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
-#else
- lst = e->u.strlist;
-#endif
- DUK_ASSERT(lst != NULL);
-
- for (j = 0; j < e->listlen; j++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, lst[j]);
-#else
- h = lst[j];
-#endif
- if (h != NULL) {
- duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr *) h);
- }
- }
- } else {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.str16);
-#else
- h = e->u.str;
-#endif
- if (h != NULL) {
- duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr *) h);
- }
- }
- }
-}
-#endif /* DUK_USE_STRTAB_CHAIN */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-DUK_LOCAL void duk__debug_dump_strtab_probe(duk_hthread *thr, duk_heap *heap) {
- duk_uint32_t i;
- duk_hstring *h;
-
- for (i = 0; i < heap->st_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->strtable16[i]);
-#else
- h = heap->strtable[i];
-#endif
- if (h == NULL || h == DUK_STRTAB_DELETED_MARKER(heap)) {
- continue;
- }
-
- duk__debug_dump_heaphdr(thr, heap, (duk_heaphdr *) h);
- }
-}
-#endif /* DUK_USE_STRTAB_PROBE */
-
-DUK_LOCAL void duk__debug_handle_dump_heap(duk_hthread *thr, duk_heap *heap) {
- DUK_D(DUK_DPRINT("debug command DumpHeap"));
-
- duk_debug_write_reply(thr);
- duk__debug_dump_heap_allocated(thr, heap);
-#if defined(DUK_USE_STRTAB_CHAIN)
- duk__debug_dump_strtab_chain(thr, heap);
-#endif
-#if defined(DUK_USE_STRTAB_PROBE)
- duk__debug_dump_strtab_probe(thr, heap);
-#endif
- duk_debug_write_eom(thr);
-}
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
-
-DUK_LOCAL void duk__debug_handle_get_bytecode(duk_hthread *thr, duk_heap *heap) {
- duk_activation *act;
- duk_hcompiledfunction *fun = NULL;
- duk_size_t i, n;
- duk_tval *tv;
- duk_hobject **fn;
- duk_int32_t level = -1;
- duk_uint8_t ibyte;
-
- DUK_UNREF(heap);
-
- DUK_D(DUK_DPRINT("debug command GetBytecode"));
-
- ibyte = duk_debug_peek_byte(thr);
- if (ibyte != DUK_DBG_IB_EOM) {
- tv = duk_debug_read_tval(thr);
- if (tv == NULL) {
- /* detached */
- return;
- }
- if (DUK_TVAL_IS_OBJECT(tv)) {
- /* tentative, checked later */
- fun = (duk_hcompiledfunction *) DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(fun != NULL);
- } else if (DUK_TVAL_IS_NUMBER(tv)) {
- level = (duk_int32_t) DUK_TVAL_GET_NUMBER(tv);
- } else {
- DUK_D(DUK_DPRINT("invalid argument to GetBytecode: %!T", tv));
- goto fail_args;
- }
- }
-
- if (fun == NULL) {
- if (level >= 0 || -level > (duk_int32_t) thr->callstack_top) {
- DUK_D(DUK_DPRINT("invalid callstack level for GetBytecode"));
- goto fail_level;
- }
- act = thr->callstack + thr->callstack_top + level;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- }
-
- if (fun == NULL || !DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun)) {
- DUK_D(DUK_DPRINT("invalid argument to GetBytecode: %!O", fun));
- goto fail_args;
- }
- DUK_ASSERT(fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun));
-
- duk_debug_write_reply(thr);
- n = DUK_HCOMPILEDFUNCTION_GET_CONSTS_COUNT(heap, fun);
- duk_debug_write_int(thr, (duk_int32_t) n);
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, fun);
- for (i = 0; i < n; i++) {
- duk_debug_write_tval(thr, tv);
- tv++;
- }
- n = DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(heap, fun);
- duk_debug_write_int(thr, (duk_int32_t) n);
- fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, fun);
- for (i = 0; i < n; i++) {
- duk_debug_write_hobject(thr, *fn);
- fn++;
- }
- duk_debug_write_string(thr,
- (const char *) DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(heap, fun),
- (duk_size_t) DUK_HCOMPILEDFUNCTION_GET_CODE_SIZE(heap, fun));
- duk_debug_write_eom(thr);
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid argument");
- return;
-
- fail_level:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "invalid callstack level");
- return;
-}
-
-/*
- * Object inspection commands: GetHeapObjInfo, GetObjPropDesc,
- * GetObjPropDescRange
- */
-
-#if defined(DUK_USE_DEBUGGER_INSPECT)
-
-#if 0 /* pruned */
-DUK_LOCAL const char * const duk__debug_getinfo_heaphdr_keys[] = {
- "reachable",
- "temproot",
- "finalizable",
- "finalized",
- "readonly"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_heaphdr_masks[] = {
- DUK_HEAPHDR_FLAG_REACHABLE,
- DUK_HEAPHDR_FLAG_TEMPROOT,
- DUK_HEAPHDR_FLAG_FINALIZABLE,
- DUK_HEAPHDR_FLAG_FINALIZED,
- DUK_HEAPHDR_FLAG_READONLY,
- 0 /* terminator */
-};
-#endif
-DUK_LOCAL const char * const duk__debug_getinfo_hstring_keys[] = {
-#if 0
- "arridx",
- "internal",
- "reserved_word",
- "strict_reserved_word",
- "eval_or_arguments",
-#endif
- "extdata"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hstring_masks[] = {
-#if 0
- DUK_HSTRING_FLAG_ARRIDX,
- DUK_HSTRING_FLAG_INTERNAL,
- DUK_HSTRING_FLAG_RESERVED_WORD,
- DUK_HSTRING_FLAG_STRICT_RESERVED_WORD,
- DUK_HSTRING_FLAG_EVAL_OR_ARGUMENTS,
-#endif
- DUK_HSTRING_FLAG_EXTDATA,
- 0 /* terminator */
-};
-DUK_LOCAL const char * const duk__debug_getinfo_hobject_keys[] = {
- "extensible",
- "constructable",
- "bound",
- "compiledfunction",
- "nativefunction",
- "bufferobject",
- "thread",
- "array_part",
- "strict",
- "notail",
- "newenv",
- "namebinding",
- "createargs",
- "envrecclosed",
- "exotic_array",
- "exotic_stringobj",
- "exotic_arguments",
- "exotic_dukfunc",
- "exotic_proxyobj"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hobject_masks[] = {
- DUK_HOBJECT_FLAG_EXTENSIBLE,
- DUK_HOBJECT_FLAG_CONSTRUCTABLE,
- DUK_HOBJECT_FLAG_BOUND,
- DUK_HOBJECT_FLAG_COMPILEDFUNCTION,
- DUK_HOBJECT_FLAG_NATIVEFUNCTION,
- DUK_HOBJECT_FLAG_BUFFEROBJECT,
- DUK_HOBJECT_FLAG_THREAD,
- DUK_HOBJECT_FLAG_ARRAY_PART,
- DUK_HOBJECT_FLAG_STRICT,
- DUK_HOBJECT_FLAG_NOTAIL,
- DUK_HOBJECT_FLAG_NEWENV,
- DUK_HOBJECT_FLAG_NAMEBINDING,
- DUK_HOBJECT_FLAG_CREATEARGS,
- DUK_HOBJECT_FLAG_ENVRECCLOSED,
- DUK_HOBJECT_FLAG_EXOTIC_ARRAY,
- DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ,
- DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS,
- DUK_HOBJECT_FLAG_EXOTIC_DUKFUNC,
- DUK_HOBJECT_FLAG_EXOTIC_PROXYOBJ,
- 0 /* terminator */
-};
-DUK_LOCAL const char * const duk__debug_getinfo_hbuffer_keys[] = {
- "dynamic",
- "external"
- /* NULL not needed here */
-};
-DUK_LOCAL duk_uint_t duk__debug_getinfo_hbuffer_masks[] = {
- DUK_HBUFFER_FLAG_DYNAMIC,
- DUK_HBUFFER_FLAG_EXTERNAL,
- 0 /* terminator */
-};
-
-DUK_LOCAL void duk__debug_getinfo_flags_key(duk_hthread *thr, const char *key) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_uint(duk_hthread *thr, const char *key, duk_uint_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_uint(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_int(duk_hthread *thr, const char *key, duk_int_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_int(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_prop_bool(duk_hthread *thr, const char *key, duk_bool_t val) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_cstring(thr, key);
- duk_debug_write_boolean(thr, val);
-}
-
-DUK_LOCAL void duk__debug_getinfo_bitmask(duk_hthread *thr, const char * const * keys, duk_uint_t *masks, duk_uint_t flags) {
- const char *key;
- duk_uint_t mask;
-
- for (;;) {
- mask = *masks++;
- if (!mask) {
- break;
- }
- key = *keys++;
- DUK_ASSERT(key != NULL);
-
- DUK_DD(DUK_DDPRINT("inspect bitmask: key=%s, mask=0x%08lx, flags=0x%08lx", key, (unsigned long) mask, (unsigned long) flags));
- duk__debug_getinfo_prop_bool(thr, key, flags & mask);
- }
-}
-
-/* Inspect a property using a virtual index into a conceptual property list
- * consisting of (1) all array part items from [0,a_size[ (even when above
- * .length) and (2) all entry part items from [0,e_next[. Unused slots are
- * indicated using dvalue 'unused'.
- */
-DUK_LOCAL duk_bool_t duk__debug_getprop_index(duk_hthread *thr, duk_heap *heap, duk_hobject *h_obj, duk_uint_t idx) {
- duk_uint_t a_size;
- duk_tval *tv;
- duk_hstring *h_key;
- duk_hobject *h_getset;
- duk_uint_t flags;
-
- DUK_UNREF(heap);
-
- a_size = DUK_HOBJECT_GET_ASIZE(h_obj);
- if (idx < a_size) {
- duk_debug_write_uint(thr, DUK_PROPDESC_FLAGS_WEC);
- duk_debug_write_uint(thr, idx);
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(heap, h_obj, idx);
- duk_debug_write_tval(thr, tv);
- return 1;
- }
-
- idx -= a_size;
- if (idx >= DUK_HOBJECT_GET_ENEXT(h_obj)) {
- return 0;
- }
-
- h_key = DUK_HOBJECT_E_GET_KEY(heap, h_obj, idx);
- if (h_key == NULL) {
- duk_debug_write_uint(thr, 0);
- duk_debug_write_null(thr);
- duk_debug_write_unused(thr);
- return 1;
- }
-
- flags = DUK_HOBJECT_E_GET_FLAGS(heap, h_obj, idx);
- if (DUK_HSTRING_HAS_INTERNAL(h_key)) {
- flags |= DUK_DBG_PROPFLAG_INTERNAL;
- }
- duk_debug_write_uint(thr, flags);
- duk_debug_write_hstring(thr, h_key);
- if (flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- h_getset = DUK_HOBJECT_E_GET_VALUE_GETTER(heap, h_obj, idx);
- if (h_getset) {
- duk_debug_write_hobject(thr, h_getset);
- } else {
- duk_debug_write_null(thr);
- }
- h_getset = DUK_HOBJECT_E_GET_VALUE_SETTER(heap, h_obj, idx);
- if (h_getset) {
- duk_debug_write_hobject(thr, h_getset);
- } else {
- duk_debug_write_null(thr);
- }
- } else {
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, h_obj, idx);
- duk_debug_write_tval(thr, tv);
- }
- return 1;
-}
-
-DUK_LOCAL void duk__debug_handle_get_heap_obj_info(duk_hthread *thr, duk_heap *heap) {
- duk_heaphdr *h;
-
- DUK_D(DUK_DPRINT("debug command GetHeapObjInfo"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- if (!h) {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid target");
- return;
- }
-
- duk_debug_write_reply(thr);
-
- /* As with all inspection code, we rely on the debug client providing
- * a valid, non-stale pointer: there's no portable way to safely
- * validate the pointer here.
- */
-
- duk__debug_getinfo_flags_key(thr, "heapptr");
- duk_debug_write_heapptr(thr, h);
-
- /* XXX: comes out as signed now */
- duk__debug_getinfo_prop_uint(thr, "heaphdr_flags", (duk_uint_t) DUK_HEAPHDR_GET_FLAGS(h));
- duk__debug_getinfo_prop_uint(thr, "heaphdr_type", (duk_uint_t) DUK_HEAPHDR_GET_TYPE(h));
-#if defined(DUK_USE_REFERENCE_COUNTING)
- duk__debug_getinfo_prop_uint(thr, "refcount", (duk_uint_t) DUK_HEAPHDR_GET_REFCOUNT(h));
-#endif
-#if 0 /* pruned */
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_heaphdr_keys,
- duk__debug_getinfo_heaphdr_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
-#endif
-
- switch (DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING: {
- duk_hstring *h_str;
-
- h_str = (duk_hstring *) h;
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hstring_keys,
- duk__debug_getinfo_hstring_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "bytelen", DUK_HSTRING_GET_BYTELEN(h_str));
- duk__debug_getinfo_prop_uint(thr, "charlen", DUK_HSTRING_GET_CHARLEN(h_str));
- duk__debug_getinfo_prop_uint(thr, "hash", DUK_HSTRING_GET_HASH(h_str));
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_hstring(thr, h_str);
- break;
- }
- case DUK_HTYPE_OBJECT: {
- duk_hobject *h_obj;
- duk_hobject *h_proto;
-
- h_obj = (duk_hobject *) h;
- h_proto = DUK_HOBJECT_GET_PROTOTYPE(heap, h_obj);
-
- /* duk_hobject specific fields. */
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hobject_keys,
- duk__debug_getinfo_hobject_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "class_number", DUK_HOBJECT_GET_CLASS_NUMBER(h_obj));
- duk__debug_getinfo_flags_key(thr, "class_name");
- duk_debug_write_hstring(thr, DUK_HOBJECT_GET_CLASS_STRING(heap, h_obj));
- duk__debug_getinfo_flags_key(thr, "prototype");
- if (h_proto != NULL) {
- duk_debug_write_hobject(thr, h_proto);
- } else {
- duk_debug_write_null(thr);
- }
- duk__debug_getinfo_flags_key(thr, "props");
- duk_debug_write_pointer(thr, (void *) DUK_HOBJECT_GET_PROPS(heap, h_obj));
- duk__debug_getinfo_prop_uint(thr, "e_size", (duk_uint_t) DUK_HOBJECT_GET_ESIZE(h_obj));
- duk__debug_getinfo_prop_uint(thr, "e_next", (duk_uint_t) DUK_HOBJECT_GET_ENEXT(h_obj));
- duk__debug_getinfo_prop_uint(thr, "a_size", (duk_uint_t) DUK_HOBJECT_GET_ASIZE(h_obj));
- duk__debug_getinfo_prop_uint(thr, "h_size", (duk_uint_t) DUK_HOBJECT_GET_HSIZE(h_obj));
-
- /* duk_hnativefunction specific fields. */
- if (DUK_HOBJECT_IS_NATIVEFUNCTION(h_obj)) {
- duk_hnativefunction *h_fun;
- h_fun = (duk_hnativefunction *) h_obj;
-
- duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs);
- duk__debug_getinfo_prop_int(thr, "magic", h_fun->magic);
- duk__debug_getinfo_prop_bool(thr, "varargs", h_fun->magic == DUK_HNATIVEFUNCTION_NARGS_VARARGS);
- /* Native function pointer may be different from a void pointer,
- * and we serialize it from memory directly now (no byte swapping etc).
- */
- duk__debug_getinfo_flags_key(thr, "funcptr");
- duk_debug_write_buffer(thr, (const char *) &h_fun->func, sizeof(h_fun->func));
- }
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h_obj)) {
- duk_hcompiledfunction *h_fun;
- duk_hbuffer *h_buf;
- h_fun = (duk_hcompiledfunction *) h_obj;
-
- duk__debug_getinfo_prop_int(thr, "nregs", h_fun->nregs);
- duk__debug_getinfo_prop_int(thr, "nargs", h_fun->nargs);
- duk__debug_getinfo_prop_uint(thr, "start_line", h_fun->start_line);
- duk__debug_getinfo_prop_uint(thr, "end_line", h_fun->end_line);
- h_buf = (duk_hbuffer *) DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, h_fun);
- if (h_buf != NULL) {
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_heapptr(thr, (duk_heaphdr *) h_buf);
- }
- }
-
- if (DUK_HOBJECT_IS_THREAD(h_obj)) {
- /* XXX: Currently no inspection of threads, e.g. value stack, call
- * stack, catch stack, etc.
- */
- duk_hthread *h_thr;
- h_thr = (duk_hthread *) h_obj;
- DUK_UNREF(h_thr);
- }
-
- if (DUK_HOBJECT_IS_BUFFEROBJECT(h_obj)) {
- duk_hbufferobject *h_bufobj;
- h_bufobj = (duk_hbufferobject *) h_obj;
-
- duk__debug_getinfo_prop_uint(thr, "slice_offset", h_bufobj->offset);
- duk__debug_getinfo_prop_uint(thr, "slice_length", h_bufobj->length);
- duk__debug_getinfo_prop_uint(thr, "elem_shift", (duk_uint_t) h_bufobj->shift);
- duk__debug_getinfo_prop_uint(thr, "elem_type", (duk_uint_t) h_bufobj->elem_type);
- duk__debug_getinfo_prop_bool(thr, "is_view", (duk_uint_t) h_bufobj->is_view);
- if (h_bufobj->buf != NULL) {
- duk__debug_getinfo_flags_key(thr, "buffer");
- duk_debug_write_heapptr(thr, (duk_heaphdr *) h_bufobj->buf);
- }
- }
- break;
- }
- case DUK_HTYPE_BUFFER: {
- duk_hbuffer *h_buf;
-
- h_buf = (duk_hbuffer *) h;
- duk__debug_getinfo_bitmask(thr,
- duk__debug_getinfo_hbuffer_keys,
- duk__debug_getinfo_hbuffer_masks,
- DUK_HEAPHDR_GET_FLAGS_RAW(h));
- duk__debug_getinfo_prop_uint(thr, "size", (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_buf));
- duk__debug_getinfo_flags_key(thr, "dataptr");
- duk_debug_write_pointer(thr, (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_buf));
- duk__debug_getinfo_flags_key(thr, "data");
- duk_debug_write_hbuffer(thr, h_buf); /* tolerates NULL h_buf */
- break;
- }
- default: {
- /* Since we already started writing the reply, just emit nothing. */
- DUK_D(DUK_DPRINT("inspect target pointer has invalid heaphdr type"));
- }
- }
-
- duk_debug_write_eom(thr);
-}
-
-DUK_LOCAL void duk__debug_handle_get_obj_prop_desc(duk_hthread *thr, duk_heap *heap) {
- duk_heaphdr *h;
- duk_hobject *h_obj;
- duk_hstring *h_key;
- duk_propdesc desc;
-
- DUK_D(DUK_DPRINT("debug command GetObjPropDesc"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- if (!h) {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid target");
- return;
- }
- h_key = duk_debug_read_hstring(thr);
- if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT || h_key == NULL) {
- goto fail_args;
- }
- h_obj = (duk_hobject *) h;
-
- if (duk_hobject_get_own_propdesc(thr, h_obj, h_key, &desc, 0 /*flags*/)) {
- duk_int_t virtual_idx;
- duk_bool_t rc;
-
- /* To use the shared helper need the virtual index. */
- DUK_ASSERT(desc.e_idx >= 0 || desc.a_idx >= 0);
- virtual_idx = (desc.a_idx >= 0 ? desc.a_idx :
- (duk_int_t) DUK_HOBJECT_GET_ASIZE(h_obj) + desc.e_idx);
-
- duk_debug_write_reply(thr);
- rc = duk__debug_getprop_index(thr, heap, h_obj, (duk_uint_t) virtual_idx);
- DUK_ASSERT(rc == 1);
- DUK_UNREF(rc);
- duk_debug_write_eom(thr);
- } else {
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_NOTFOUND, "not found");
- }
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args");
-}
-
-DUK_LOCAL void duk__debug_handle_get_obj_prop_desc_range(duk_hthread *thr, duk_heap *heap) {
- duk_heaphdr *h;
- duk_hobject *h_obj;
- duk_uint_t idx, idx_start, idx_end;
-
- DUK_D(DUK_DPRINT("debug command GetObjPropDescRange"));
- DUK_UNREF(heap);
-
- h = duk_debug_read_any_ptr(thr);
- idx_start = duk_debug_read_int(thr);
- idx_end = duk_debug_read_int(thr);
- if (h == NULL || DUK_HEAPHDR_GET_TYPE(h) != DUK_HTYPE_OBJECT) {
- goto fail_args;
- }
- h_obj = (duk_hobject *) h;
-
- /* The index range space is conceptually the array part followed by the
- * entry part. Unlike normal enumeration all slots are exposed here as
- * is and return 'unused' if the slots are not in active use. In particular
- * the array part is included for the full a_size regardless of what the
- * array .length is.
- */
-
- duk_debug_write_reply(thr);
- for (idx = idx_start; idx < idx_end; idx++) {
- if (!duk__debug_getprop_index(thr, heap, h_obj, idx)) {
- break;
- }
- }
- duk_debug_write_eom(thr);
- return;
-
- fail_args:
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNKNOWN, "invalid args");
-}
-
-#endif /* DUK_USE_DEBUGGER_INSPECT */
-
-/*
- * Process incoming debug requests
- *
- * Individual request handlers can push temporaries on the value stack and
- * rely on duk__debug_process_message() to restore the value stack top
- * automatically.
- */
-
-/* Process one debug message. Automatically restore value stack top to its
- * entry value, so that individual message handlers don't need exact value
- * stack handling which is convenient.
- */
-DUK_LOCAL void duk__debug_process_message(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_heap *heap;
- duk_uint8_t x;
- duk_int32_t cmd;
- duk_idx_t entry_top;
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
- DUK_UNREF(ctx);
-
- entry_top = duk_get_top(ctx);
-
- x = duk_debug_read_byte(thr);
- switch (x) {
- case DUK_DBG_IB_REQUEST: {
- cmd = duk_debug_read_int(thr);
- switch (cmd) {
- case DUK_DBG_CMD_BASICINFO: {
- duk__debug_handle_basic_info(thr, heap);
- break;
- }
- case DUK_DBG_CMD_TRIGGERSTATUS: {
- duk__debug_handle_trigger_status(thr, heap);
- break;
- }
- case DUK_DBG_CMD_PAUSE: {
- duk__debug_handle_pause(thr, heap);
- break;
- }
- case DUK_DBG_CMD_RESUME: {
- duk__debug_handle_resume(thr, heap);
- break;
- }
- case DUK_DBG_CMD_STEPINTO:
- case DUK_DBG_CMD_STEPOVER:
- case DUK_DBG_CMD_STEPOUT: {
- duk__debug_handle_step(thr, heap, cmd);
- break;
- }
- case DUK_DBG_CMD_LISTBREAK: {
- duk__debug_handle_list_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_ADDBREAK: {
- duk__debug_handle_add_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_DELBREAK: {
- duk__debug_handle_del_break(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETVAR: {
- duk__debug_handle_get_var(thr, heap);
- break;
- }
- case DUK_DBG_CMD_PUTVAR: {
- duk__debug_handle_put_var(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETCALLSTACK: {
- duk__debug_handle_get_call_stack(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETLOCALS: {
- duk__debug_handle_get_locals(thr, heap);
- break;
- }
- case DUK_DBG_CMD_EVAL: {
- duk__debug_handle_eval(thr, heap);
- break;
- }
- case DUK_DBG_CMD_DETACH: {
- /* The actual detached_cb call is postponed to message loop so
- * we don't need any special precautions here (just skip to EOM
- * on the already closed connection).
- */
- duk__debug_handle_detach(thr, heap);
- break;
- }
-#if defined(DUK_USE_DEBUGGER_DUMPHEAP)
- case DUK_DBG_CMD_DUMPHEAP: {
- duk__debug_handle_dump_heap(thr, heap);
- break;
- }
-#endif /* DUK_USE_DEBUGGER_DUMPHEAP */
- case DUK_DBG_CMD_GETBYTECODE: {
- duk__debug_handle_get_bytecode(thr, heap);
- break;
- }
- case DUK_DBG_CMD_APPREQUEST: {
- duk__debug_handle_apprequest(thr, heap);
- break;
- }
-#if defined(DUK_USE_DEBUGGER_INSPECT)
- case DUK_DBG_CMD_GETHEAPOBJINFO: {
- duk__debug_handle_get_heap_obj_info(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETOBJPROPDESC: {
- duk__debug_handle_get_obj_prop_desc(thr, heap);
- break;
- }
- case DUK_DBG_CMD_GETOBJPROPDESCRANGE: {
- duk__debug_handle_get_obj_prop_desc_range(thr, heap);
- break;
- }
-#endif /* DUK_USE_DEBUGGER_INSPECT */
- default: {
- DUK_D(DUK_DPRINT("debug command unsupported: %d", (int) cmd));
- duk_debug_write_error_eom(thr, DUK_DBG_ERR_UNSUPPORTED, "unsupported command");
- }
- } /* switch cmd */
- break;
- }
- case DUK_DBG_IB_REPLY: {
- DUK_D(DUK_DPRINT("debug reply, skipping"));
- break;
- }
- case DUK_DBG_IB_ERROR: {
- DUK_D(DUK_DPRINT("debug error, skipping"));
- break;
- }
- case DUK_DBG_IB_NOTIFY: {
- DUK_D(DUK_DPRINT("debug notify, skipping"));
- break;
- }
- default: {
- DUK_D(DUK_DPRINT("invalid initial byte, drop connection: %d", (int) x));
- goto fail;
- }
- } /* switch initial byte */
-
- DUK_ASSERT(duk_get_top(ctx) >= entry_top);
- duk_set_top(ctx, entry_top);
- duk__debug_skip_to_eom(thr);
- return;
-
- fail:
- DUK_ASSERT(duk_get_top(ctx) >= entry_top);
- duk_set_top(ctx, entry_top);
- DUK__SET_CONN_BROKEN(thr, 1);
- return;
-}
-
-DUK_LOCAL void duk__check_resend_status(duk_hthread *thr) {
- if (thr->heap->dbg_read_cb != NULL && thr->heap->dbg_state_dirty) {
- duk_debug_send_status(thr);
- thr->heap->dbg_state_dirty = 0;
- }
-}
-
-DUK_INTERNAL duk_bool_t duk_debug_process_messages(duk_hthread *thr, duk_bool_t no_block) {
- duk_context *ctx = (duk_context *) thr;
-#if defined(DUK_USE_ASSERTIONS)
- duk_idx_t entry_top;
-#endif
- duk_bool_t retval = 0;
-
- DUK_ASSERT(thr != NULL);
- DUK_UNREF(ctx);
- DUK_ASSERT(thr->heap != NULL);
-#if defined(DUK_USE_ASSERTIONS)
- entry_top = duk_get_top(ctx);
-#endif
-
- DUK_D(DUK_DPRINT("process debug messages: read_cb=%s, no_block=%ld, detaching=%ld, processing=%ld",
- thr->heap->dbg_read_cb ? "not NULL" : "NULL", (long) no_block,
- (long) thr->heap->dbg_detaching, (long) thr->heap->dbg_processing));
- DUK_DD(DUK_DDPRINT("top at entry: %ld", (long) duk_get_top(ctx)));
-
- /* thr->heap->dbg_detaching may be != 0 if a debugger write outside
- * the message loop caused a transport error and detach1() to run.
- */
- DUK_ASSERT(thr->heap->dbg_detaching == 0 || thr->heap->dbg_detaching == 1);
- DUK_ASSERT(thr->heap->dbg_processing == 0);
- thr->heap->dbg_processing = 1;
-
- /* Ensure dirty state causes a Status even if never process any
- * messages. This is expected by the bytecode executor when in
- * the running state.
- */
- duk__check_resend_status(thr);
-
- for (;;) {
- /* Process messages until we're no longer paused or we peek
- * and see there's nothing to read right now.
- */
- DUK_DD(DUK_DDPRINT("top at loop top: %ld", (long) duk_get_top(ctx)));
- DUK_ASSERT(thr->heap->dbg_processing == 1);
-
- while (thr->heap->dbg_read_cb == NULL && thr->heap->dbg_detaching) {
- /* Detach is pending; can be triggered from outside the
- * debugger loop (e.g. Status notify write error) or by
- * previous message handling. Call detached callback
- * here, in a controlled state, to ensure a possible
- * reattach inside the detached_cb is handled correctly.
- *
- * Recheck for detach in a while loop: an immediate
- * reattach involves a call to duk_debugger_attach()
- * which writes a debugger handshake line immediately
- * inside the API call. If the transport write fails
- * for that handshake, we can immediately end up in a
- * "transport broken, detaching" case several times here.
- * Loop back until we're either cleanly attached or
- * fully detached.
- *
- * NOTE: Reset dbg_processing = 1 forcibly, in case we
- * re-attached; duk_debugger_attach() sets dbg_processing
- * to 0 at the moment.
- */
-
- DUK_D(DUK_DPRINT("detach pending (dbg_read_cb == NULL, dbg_detaching != 0), call detach2"));
-
- duk__debug_do_detach2(thr->heap);
- thr->heap->dbg_processing = 1; /* may be set to 0 by duk_debugger_attach() inside callback */
-
- DUK_D(DUK_DPRINT("after detach2 (and possible reattach): dbg_read_cb=%s, dbg_detaching=%ld",
- thr->heap->dbg_read_cb ? "not NULL" : "NULL", (long) thr->heap->dbg_detaching));
- }
- DUK_ASSERT(thr->heap->dbg_detaching == 0); /* true even with reattach */
- DUK_ASSERT(thr->heap->dbg_processing == 1); /* even after a detach and possible reattach */
-
- if (thr->heap->dbg_read_cb == NULL) {
- DUK_D(DUK_DPRINT("debug connection broken (and not detaching), stop processing messages"));
- break;
- }
-
- if (!thr->heap->dbg_paused || no_block) {
- if (!duk_debug_read_peek(thr)) {
- /* Note: peek cannot currently trigger a detach
- * so the dbg_detaching == 0 assert outside the
- * loop is correct.
- */
- DUK_D(DUK_DPRINT("processing debug message, peek indicated no data, stop processing messages"));
- break;
- }
- DUK_D(DUK_DPRINT("processing debug message, peek indicated there is data, handle it"));
- } else {
- DUK_D(DUK_DPRINT("paused, process debug message, blocking if necessary"));
- }
-
- duk__check_resend_status(thr);
- duk__debug_process_message(thr);
- duk__check_resend_status(thr);
-
- retval = 1; /* processed one or more messages */
- }
-
- DUK_ASSERT(thr->heap->dbg_detaching == 0);
- DUK_ASSERT(thr->heap->dbg_processing == 1);
- thr->heap->dbg_processing = 0;
-
- /* As an initial implementation, read flush after exiting the message
- * loop. If transport is broken, this is a no-op (with debug logs).
- */
- duk_debug_read_flush(thr); /* this cannot initiate a detach */
- DUK_ASSERT(thr->heap->dbg_detaching == 0);
-
- DUK_DD(DUK_DDPRINT("top at exit: %ld", (long) duk_get_top(ctx)));
-
-#if defined(DUK_USE_ASSERTIONS)
- /* Easy to get wrong, so assert for it. */
- DUK_ASSERT(entry_top == duk_get_top(ctx));
-#endif
-
- return retval;
-}
-
-/*
- * Halt execution helper
- */
-
-/* Halt execution and enter a debugger message loop until execution is resumed
- * by the client. PC for the current activation may be temporarily decremented
- * so that the "current" instruction will be shown by the client. This helper
- * is callable from anywhere, also outside bytecode executor.
- */
-
-DUK_INTERNAL void duk_debug_halt_execution(duk_hthread *thr, duk_bool_t use_prev_pc) {
- duk_activation *act;
- duk_hcompiledfunction *fun;
- duk_instr_t *old_pc = NULL;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT(thr->heap->dbg_processing == 0);
-
- DUK_HEAP_SET_PAUSED(thr->heap);
-
- act = duk_hthread_get_current_activation(thr);
-
- /* NOTE: act may be NULL if an error is thrown outside of any activation,
- * which may happen in the case of, e.g. syntax errors.
- */
-
- /* Decrement PC if that was requested, this requires a PC sync. */
- if (act != NULL) {
- duk_hthread_sync_currpc(thr);
- old_pc = act->curr_pc;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
-
- /* Short circuit if is safe: if act->curr_pc != NULL, 'fun' is
- * guaranteed to be a non-NULL Ecmascript function.
- */
- DUK_ASSERT(act->curr_pc == NULL ||
- (fun != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun)));
- if (use_prev_pc &&
- act->curr_pc != NULL &&
- act->curr_pc > DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, fun)) {
- act->curr_pc--;
- }
- }
-
- /* Process debug messages until we are no longer paused. */
-
- /* NOTE: This is a bit fragile. It's important to ensure that
- * duk_debug_process_messages() never throws an error or
- * act->curr_pc will never be reset.
- */
-
- thr->heap->dbg_state_dirty = 1;
- while (thr->heap->dbg_paused) {
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT(thr->heap->dbg_processing);
- duk_debug_process_messages(thr, 0 /*no_block*/);
- }
-
- /* XXX: Decrementing and restoring act->curr_pc works now, but if the
- * debugger message loop gains the ability to adjust the current PC
- * (e.g. a forced jump) restoring the PC here will break. Another
- * approach would be to use a state flag for the "decrement 1 from
- * topmost activation's PC" and take it into account whenever dealing
- * with PC values.
- */
- if (act != NULL) {
- act->curr_pc = old_pc; /* restore PC */
- }
-}
-
-/*
- * Breakpoint management
- */
-
-DUK_INTERNAL duk_small_int_t duk_debug_add_breakpoint(duk_hthread *thr, duk_hstring *filename, duk_uint32_t line) {
- duk_heap *heap;
- duk_breakpoint *b;
-
- /* Caller must trigger recomputation of active breakpoint list. To
- * ensure stale values are not used if that doesn't happen, clear the
- * active breakpoint list here.
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(filename != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- if (heap->dbg_breakpoint_count >= DUK_HEAP_MAX_BREAKPOINTS) {
- DUK_D(DUK_DPRINT("failed to add breakpoint for %O:%ld, all breakpoint slots used",
- (duk_heaphdr *) filename, (long) line));
- return -1;
- }
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
- b = heap->dbg_breakpoints + (heap->dbg_breakpoint_count++);
- b->filename = filename;
- b->line = line;
- DUK_HSTRING_INCREF(thr, filename);
-
- return heap->dbg_breakpoint_count - 1; /* index */
-}
-
-DUK_INTERNAL duk_bool_t duk_debug_remove_breakpoint(duk_hthread *thr, duk_small_uint_t breakpoint_index) {
- duk_heap *heap;
- duk_hstring *h;
- duk_breakpoint *b;
- duk_size_t move_size;
-
- /* Caller must trigger recomputation of active breakpoint list. To
- * ensure stale values are not used if that doesn't happen, clear the
- * active breakpoint list here.
- */
-
- DUK_ASSERT(thr != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap));
- DUK_ASSERT_DISABLE(breakpoint_index >= 0); /* unsigned */
-
- if (breakpoint_index >= heap->dbg_breakpoint_count) {
- DUK_D(DUK_DPRINT("invalid breakpoint index: %ld", (long) breakpoint_index));
- return 0;
- }
- b = heap->dbg_breakpoints + breakpoint_index;
-
- h = b->filename;
- DUK_ASSERT(h != NULL);
-
- move_size = sizeof(duk_breakpoint) * (heap->dbg_breakpoint_count - breakpoint_index - 1);
- if (move_size > 0) {
- DUK_MEMMOVE((void *) b,
- (const void *) (b + 1),
- (size_t) move_size);
- }
- heap->dbg_breakpoint_count--;
- heap->dbg_breakpoints_active[0] = (duk_breakpoint *) NULL;
-
- DUK_HSTRING_DECREF(thr, h); /* side effects */
- DUK_UNREF(h); /* w/o refcounting */
-
- /* Breakpoint entries above the used area are left as garbage. */
-
- return 1;
-}
-
-#undef DUK__SET_CONN_BROKEN
-
-#else /* DUK_USE_DEBUGGER_SUPPORT */
-
-/* No debugger support. */
-
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-#line 1 "duk_error_augment.c"
-/*
- * Augmenting errors at their creation site and their throw site.
- *
- * When errors are created, traceback data is added by built-in code
- * and a user error handler (if defined) can process or replace the
- * error. Similarly, when errors are thrown, a user error handler
- * (if defined) can process or replace the error.
- *
- * Augmentation and other processing at error creation time is nice
- * because an error is only created once, but it may be thrown and
- * rethrown multiple times. User error handler registered for processing
- * an error at its throw site must be careful to handle rethrowing in
- * a useful manner.
- *
- * Error augmentation may throw an internal error (e.g. alloc error).
- *
- * Ecmascript allows throwing any values, so all values cannot be
- * augmented. Currently, the built-in augmentation at error creation
- * only augments error values which are Error instances (= have the
- * built-in Error.prototype in their prototype chain) and are also
- * extensible. User error handlers have no limitations in this respect.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Helper for calling a user error handler.
- *
- * 'thr' must be the currently active thread; the error handler is called
- * in its context. The valstack of 'thr' must have the error value on
- * top, and will be replaced by another error value based on the return
- * value of the error handler.
- *
- * The helper calls duk_handle_call() recursively in protected mode.
- * Before that call happens, no longjmps should happen; as a consequence,
- * we must assume that the valstack contains enough temporary space for
- * arguments and such.
- *
- * While the error handler runs, any errors thrown will not trigger a
- * recursive error handler call (this is implemented using a heap level
- * flag which will "follow" through any coroutines resumed inside the
- * error handler). If the error handler is not callable or throws an
- * error, the resulting error replaces the original error (for Duktape
- * internal errors, duk_error_throw.c further substitutes this error with
- * a DoubleError which is not ideal). This would be easy to change and
- * even signal to the caller.
- *
- * The user error handler is stored in 'Duktape.errCreate' or
- * 'Duktape.errThrow' depending on whether we're augmenting the error at
- * creation or throw time. There are several alternatives to this approach,
- * see doc/error-objects.rst for discussion.
- *
- * Note: since further longjmp()s may occur while calling the error handler
- * (for many reasons, e.g. a labeled 'break' inside the handler), the
- * caller can make no assumptions on the thr->heap->lj state after the
- * call (this affects especially duk_error_throw.c). This is not an issue
- * as long as the caller writes to the lj state only after the error handler
- * finishes.
- */
-
-#if defined(DUK_USE_ERRTHROW) || defined(DUK_USE_ERRCREATE)
-DUK_LOCAL void duk__err_augment_user(duk_hthread *thr, duk_small_uint_t stridx_cb) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_hnd;
- duk_small_uint_t call_flags;
- duk_int_t rc;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT_DISABLE(stridx_cb >= 0); /* unsigned */
- DUK_ASSERT(stridx_cb < DUK_HEAP_NUM_STRINGS);
-
- if (DUK_HEAP_HAS_ERRHANDLER_RUNNING(thr->heap)) {
- DUK_DD(DUK_DDPRINT("recursive call to error handler, ignore"));
- return;
- }
-
- /*
- * Check whether or not we have an error handler.
- *
- * We must be careful of not triggering an error when looking up the
- * property. For instance, if the property is a getter, we don't want
- * to call it, only plain values are allowed. The value, if it exists,
- * is not checked. If the value is not a function, a TypeError happens
- * when it is called and that error replaces the original one.
- */
-
- DUK_ASSERT_VALSTACK_SPACE(thr, 4); /* 3 entries actually needed below */
-
- /* [ ... errval ] */
-
- if (thr->builtins[DUK_BIDX_DUKTAPE] == NULL) {
- /* When creating built-ins, some of the built-ins may not be set
- * and we want to tolerate that when throwing errors.
- */
- DUK_DD(DUK_DDPRINT("error occurred when DUK_BIDX_DUKTAPE is NULL, ignoring"));
- return;
- }
- tv_hnd = duk_hobject_find_existing_entry_tval_ptr(thr->heap,
- thr->builtins[DUK_BIDX_DUKTAPE],
- DUK_HTHREAD_GET_STRING(thr, stridx_cb));
- if (tv_hnd == NULL) {
- DUK_DD(DUK_DDPRINT("error handler does not exist or is not a plain value: %!T",
- (duk_tval *) tv_hnd));
- return;
- }
- DUK_DDD(DUK_DDDPRINT("error handler dump (callability not checked): %!T",
- (duk_tval *) tv_hnd));
- duk_push_tval(ctx, tv_hnd);
-
- /* [ ... errval errhandler ] */
-
- duk_insert(ctx, -2); /* -> [ ... errhandler errval ] */
- duk_push_undefined(ctx);
- duk_insert(ctx, -2); /* -> [ ... errhandler undefined(= this) errval ] */
-
- /* [ ... errhandler undefined errval ] */
-
- /*
- * DUK_CALL_FLAG_IGNORE_RECLIMIT causes duk_handle_call() to ignore C
- * recursion depth limit (and won't increase it either). This is
- * dangerous, but useful because it allows the error handler to run
- * even if the original error is caused by C recursion depth limit.
- *
- * The heap level DUK_HEAP_FLAG_ERRHANDLER_RUNNING is set for the
- * duration of the error handler and cleared afterwards. This flag
- * prevents the error handler from running recursively. The flag is
- * heap level so that the flag properly controls even coroutines
- * launched by an error handler. Since the flag is heap level, it is
- * critical to restore it correctly.
- *
- * We ignore errors now: a success return and an error value both
- * replace the original error value. (This would be easy to change.)
- */
-
- DUK_ASSERT(!DUK_HEAP_HAS_ERRHANDLER_RUNNING(thr->heap)); /* since no recursive error handler calls */
- DUK_HEAP_SET_ERRHANDLER_RUNNING(thr->heap);
-
- call_flags = DUK_CALL_FLAG_IGNORE_RECLIMIT; /* ignore reclimit, not constructor */
-
- rc = duk_handle_call_protected(thr,
- 1, /* num args */
- call_flags); /* call_flags */
- DUK_UNREF(rc); /* no need to check now: both success and error are OK */
-
- DUK_ASSERT(DUK_HEAP_HAS_ERRHANDLER_RUNNING(thr->heap));
- DUK_HEAP_CLEAR_ERRHANDLER_RUNNING(thr->heap);
-
- /* [ ... errval ] */
-}
-#endif /* DUK_USE_ERRTHROW || DUK_USE_ERRCREATE */
-
-/*
- * Add ._Tracedata to an error on the stack top.
- */
-
-#if defined(DUK_USE_TRACEBACKS)
-DUK_LOCAL void duk__add_traceback(duk_hthread *thr, duk_hthread *thr_callstack, const char *c_filename, duk_int_t c_line, duk_bool_t noblame_fileline) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t depth;
- duk_int_t i, i_min;
- duk_uarridx_t arr_idx;
- duk_double_t d;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr_callstack != NULL);
- DUK_ASSERT(ctx != NULL);
-
- /* [ ... error ] */
-
- /*
- * The traceback format is pretty arcane in an attempt to keep it compact
- * and cheap to create. It may change arbitrarily from version to version.
- * It should be decoded/accessed through version specific accessors only.
- *
- * See doc/error-objects.rst.
- */
-
- DUK_DDD(DUK_DDDPRINT("adding traceback to object: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk_push_array(ctx); /* XXX: specify array size, as we know it */
- arr_idx = 0;
-
- /* Compiler SyntaxErrors (and other errors) come first, and are
- * blamed by default (not flagged "noblame").
- */
- if (thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL) {
- duk_push_hstring(ctx, thr->compile_ctx->h_filename);
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
-
- duk_push_uint(ctx, (duk_uint_t) thr->compile_ctx->curr_token.start_line); /* (flags<<32) + (line), flags = 0 */
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
- }
-
- /* Filename/line from C macros (__FILE__, __LINE__) are added as an
- * entry with a special format: (string, number). The number contains
- * the line and flags.
- */
-
- /* XXX: optimize: allocate an array part to the necessary size (upwards
- * estimate) and fill in the values directly into the array part; finally
- * update 'length'.
- */
-
- /* XXX: using duk_put_prop_index() would cause obscure error cases when Array.prototype
- * has write-protected array index named properties. This was seen as DoubleErrors
- * in e.g. some test262 test cases. Using duk_xdef_prop_index() is better but heavier.
- * The best fix is to fill in the tracedata directly into the array part. There are
- * no side effect concerns if the array part is allocated directly and only INCREFs
- * happen after that.
- */
-
- /* [ ... error arr ] */
-
- if (c_filename) {
- duk_push_string(ctx, c_filename);
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
-
- d = (noblame_fileline ? ((duk_double_t) DUK_TB_FLAG_NOBLAME_FILELINE) * DUK_DOUBLE_2TO32 : 0.0) +
- (duk_double_t) c_line;
- duk_push_number(ctx, d);
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
- }
-
- /* traceback depth doesn't take into account the filename/line
- * special handling above (intentional)
- */
- depth = DUK_USE_TRACEBACK_DEPTH;
- i_min = (thr_callstack->callstack_top > (duk_size_t) depth ? (duk_int_t) (thr_callstack->callstack_top - depth) : 0);
- DUK_ASSERT(i_min >= 0);
-
- /* [ ... error arr ] */
-
- DUK_ASSERT(thr_callstack->callstack_top <= DUK_INT_MAX); /* callstack limits */
- for (i = (duk_int_t) (thr_callstack->callstack_top - 1); i >= i_min; i--) {
- duk_uint32_t pc;
-
- /*
- * Note: each API operation potentially resizes the callstack,
- * so be careful to re-lookup after every operation. Currently
- * these is no issue because we don't store a temporary 'act'
- * pointer at all. (This would be a non-issue if we operated
- * directly on the array part.)
- */
-
- /* [... arr] */
-
- DUK_ASSERT_DISABLE(thr_callstack->callstack[i].pc >= 0); /* unsigned */
-
- /* Add function object. */
- duk_push_tval(ctx, &(thr_callstack->callstack + i)->tv_func);
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
-
- /* Add a number containing: pc, activation flags.
- *
- * PC points to next instruction, find offending PC. Note that
- * PC == 0 for native code.
- */
- pc = duk_hthread_get_act_prev_pc(thr_callstack, thr_callstack->callstack + i);
- DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */
- DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */
- d = ((duk_double_t) thr_callstack->callstack[i].flags) * DUK_DOUBLE_2TO32 + (duk_double_t) pc;
- duk_push_number(ctx, d); /* -> [... arr num] */
- duk_xdef_prop_index_wec(ctx, -2, arr_idx);
- arr_idx++;
- }
-
- /* XXX: set with duk_hobject_set_length() when tracedata is filled directly */
- duk_push_uint(ctx, (duk_uint_t) arr_idx);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_WC);
-
- /* [ ... error arr ] */
-
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INT_TRACEDATA); /* -> [ ... error ] */
-}
-#endif /* DUK_USE_TRACEBACKS */
-
-/*
- * Add .fileName and .lineNumber to an error on the stack top.
- */
-
-#if !defined(DUK_USE_TRACEBACKS)
-DUK_LOCAL void duk__add_fileline(duk_hthread *thr, duk_hthread *thr_callstack, const char *c_filename, duk_int_t c_line, duk_bool_t noblame_fileline) {
- duk_context *ctx;
-#if defined(DUK_USE_ASSERTIONS)
- duk_int_t entry_top;
-#endif
-
- ctx = (duk_context *) thr;
-#if defined(DUK_USE_ASSERTIONS)
- entry_top = duk_get_top(ctx);
-#endif
-
- /*
- * If tracebacks are disabled, 'fileName' and 'lineNumber' are added
- * as plain own properties. Since Error.prototype has accessors of
- * the same name, we need to define own properties directly (cannot
- * just use e.g. duk_put_prop_stridx). Existing properties are not
- * overwritten in case they already exist.
- */
-
- if (thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL) {
- /* Compiler SyntaxError (or other error) gets the primary blame.
- * Currently no flag to prevent blaming.
- */
- duk_push_uint(ctx, (duk_uint_t) thr->compile_ctx->curr_token.start_line);
- duk_push_hstring(ctx, thr->compile_ctx->h_filename);
- } else if (c_filename && !noblame_fileline) {
- /* C call site gets blamed next, unless flagged not to do so.
- * XXX: file/line is disabled in minimal builds, so disable this
- * too when appropriate.
- */
- duk_push_int(ctx, c_line);
- duk_push_string(ctx, c_filename);
- } else {
- /* Finally, blame the innermost callstack entry which has a
- * .fileName property.
- */
- duk_small_uint_t depth;
- duk_int_t i, i_min;
- duk_uint32_t ecma_line;
-
- depth = DUK_USE_TRACEBACK_DEPTH;
- i_min = (thr_callstack->callstack_top > (duk_size_t) depth ? (duk_int_t) (thr_callstack->callstack_top - depth) : 0);
- DUK_ASSERT(i_min >= 0);
-
- DUK_ASSERT(thr_callstack->callstack_top <= DUK_INT_MAX); /* callstack limits */
- for (i = (duk_int_t) (thr_callstack->callstack_top - 1); i >= i_min; i--) {
- duk_activation *act;
- duk_hobject *func;
- duk_uint32_t pc;
-
- DUK_UNREF(pc);
- act = thr_callstack->callstack + i;
- DUK_ASSERT(act >= thr_callstack->callstack && act < thr_callstack->callstack + thr_callstack->callstack_size);
-
- func = DUK_ACT_GET_FUNC(act);
- if (func == NULL) {
- /* Lightfunc, not blamed now. */
- continue;
- }
-
- /* PC points to next instruction, find offending PC,
- * PC == 0 for native code.
- */
- pc = duk_hthread_get_act_prev_pc(thr, act); /* thr argument only used for thr->heap, so specific thread doesn't matter */
- DUK_ASSERT_DISABLE(pc >= 0); /* unsigned */
- DUK_ASSERT((duk_double_t) pc < DUK_DOUBLE_2TO32); /* assume PC is at most 32 bits and non-negative */
- act = NULL; /* invalidated by pushes, so get out of the way */
-
- duk_push_hobject(ctx, func);
-
- /* [ ... error func ] */
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_FILE_NAME);
- if (!duk_is_string(ctx, -1)) {
- duk_pop_2(ctx);
- continue;
- }
-
- /* [ ... error func fileName ] */
-
- ecma_line = 0;
-#if defined(DUK_USE_PC2LINE)
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- ecma_line = duk_hobject_pc2line_query(ctx, -2, (duk_uint_fast32_t) pc);
- } else {
- /* Native function, no relevant lineNumber. */
- }
-#endif /* DUK_USE_PC2LINE */
- duk_push_u32(ctx, ecma_line);
-
- /* [ ... error func fileName lineNumber ] */
-
- duk_replace(ctx, -3);
-
- /* [ ... error lineNumber fileName ] */
- goto define_props;
- }
-
- /* No activation matches, use undefined for both .fileName and
- * .lineNumber (matches what we do with a _Tracedata based
- * no-match lookup.
- */
- duk_push_undefined(ctx);
- duk_push_undefined(ctx);
- }
-
- define_props:
- /* [ ... error lineNumber fileName ] */
-#if defined(DUK_USE_ASSERTIONS)
- DUK_ASSERT(duk_get_top(ctx) == entry_top + 2);
-#endif
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_WC | DUK_PROPDESC_FLAG_NO_OVERWRITE);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LINE_NUMBER, DUK_PROPDESC_FLAGS_WC | DUK_PROPDESC_FLAG_NO_OVERWRITE);
-}
-#endif /* !DUK_USE_TRACEBACKS */
-
-/*
- * Add line number to a compiler error.
- */
-
-DUK_LOCAL void duk__add_compiler_error_line(duk_hthread *thr) {
- duk_context *ctx;
-
- /* Append a "(line NNN)" to the "message" property of any error
- * thrown during compilation. Usually compilation errors are
- * SyntaxErrors but they can also be out-of-memory errors and
- * the like.
- */
-
- /* [ ... error ] */
-
- ctx = (duk_context *) thr;
- DUK_ASSERT(duk_is_object(ctx, -1));
-
- if (!(thr->compile_ctx != NULL && thr->compile_ctx->h_filename != NULL)) {
- return;
- }
-
- DUK_DDD(DUK_DDDPRINT("compile error, before adding line info: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_MESSAGE)) {
- duk_push_sprintf(ctx, " (line %ld)", (long) thr->compile_ctx->curr_token.start_line);
- duk_concat(ctx, 2);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_MESSAGE);
- } else {
- duk_pop(ctx);
- }
-
- DUK_DDD(DUK_DDDPRINT("compile error, after adding line info: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-}
-
-/*
- * Augment an error being created using Duktape specific properties
- * like _Tracedata or .fileName/.lineNumber.
- */
-
-#if defined(DUK_USE_AUGMENT_ERROR_CREATE)
-DUK_LOCAL void duk__err_augment_builtin_create(duk_hthread *thr, duk_hthread *thr_callstack, const char *c_filename, duk_int_t c_line, duk_small_int_t noblame_fileline, duk_hobject *obj) {
- duk_context *ctx = (duk_context *) thr;
-#if defined(DUK_USE_ASSERTIONS)
- duk_int_t entry_top;
-#endif
-
-#if defined(DUK_USE_ASSERTIONS)
- entry_top = duk_get_top(ctx);
-#endif
- DUK_ASSERT(obj != NULL);
-
- DUK_UNREF(obj); /* unreferenced w/o tracebacks */
- DUK_UNREF(ctx); /* unreferenced w/o asserts */
-
- duk__add_compiler_error_line(thr);
-
-#if defined(DUK_USE_TRACEBACKS)
- /* If tracebacks are enabled, the '_Tracedata' property is the only
- * thing we need: 'fileName' and 'lineNumber' are virtual properties
- * which use '_Tracedata'.
- */
- if (duk_hobject_hasprop_raw(thr, obj, DUK_HTHREAD_STRING_INT_TRACEDATA(thr))) {
- DUK_DDD(DUK_DDDPRINT("error value already has a '_Tracedata' property, not modifying it"));
- } else {
- duk__add_traceback(thr, thr_callstack, c_filename, c_line, noblame_fileline);
- }
-#else
- /* Without tracebacks the concrete .fileName and .lineNumber need
- * to be added directly.
- */
- duk__add_fileline(thr, thr_callstack, c_filename, c_line, noblame_fileline);
-#endif
-
-#if defined(DUK_USE_ASSERTIONS)
- DUK_ASSERT(duk_get_top(ctx) == entry_top);
-#endif
-}
-#endif /* DUK_USE_AUGMENT_ERROR_CREATE */
-
-/*
- * Augment an error at creation time with _Tracedata/fileName/lineNumber
- * and allow a user error handler (if defined) to process/replace the error.
- * The error to be augmented is at the stack top.
- *
- * thr: thread containing the error value
- * thr_callstack: thread which should be used for generating callstack etc.
- * c_filename: C __FILE__ related to the error
- * c_line: C __LINE__ related to the error
- * noblame_fileline: if true, don't fileName/line as error source, otherwise use traceback
- * (needed because user code filename/line are reported but internal ones
- * are not)
- *
- * XXX: rename noblame_fileline to flags field; combine it to some existing
- * field (there are only a few call sites so this may not be worth it).
- */
-
-#if defined(DUK_USE_AUGMENT_ERROR_CREATE)
-DUK_INTERNAL void duk_err_augment_error_create(duk_hthread *thr, duk_hthread *thr_callstack, const char *c_filename, duk_int_t c_line, duk_bool_t noblame_fileline) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *obj;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr_callstack != NULL);
- DUK_ASSERT(ctx != NULL);
-
- /* [ ... error ] */
-
- /*
- * Criteria for augmenting:
- *
- * - augmentation enabled in build (naturally)
- * - error value internal prototype chain contains the built-in
- * Error prototype object (i.e. 'val instanceof Error')
- *
- * Additional criteria for built-in augmenting:
- *
- * - error value is an extensible object
- */
-
- obj = duk_get_hobject(ctx, -1);
- if (!obj) {
- DUK_DDD(DUK_DDDPRINT("value is not an object, skip both built-in and user augment"));
- return;
- }
- if (!duk_hobject_prototype_chain_contains(thr, obj, thr->builtins[DUK_BIDX_ERROR_PROTOTYPE], 1 /*ignore_loop*/)) {
- /* If the value has a prototype loop, it's critical not to
- * throw here. Instead, assume the value is not to be
- * augmented.
- */
- DUK_DDD(DUK_DDDPRINT("value is not an error instance, skip both built-in and user augment"));
- return;
- }
- if (DUK_HOBJECT_HAS_EXTENSIBLE(obj)) {
- DUK_DDD(DUK_DDDPRINT("error meets criteria, built-in augment"));
- duk__err_augment_builtin_create(thr, thr_callstack, c_filename, c_line, noblame_fileline, obj);
- } else {
- DUK_DDD(DUK_DDDPRINT("error does not meet criteria, no built-in augment"));
- }
-
- /* [ ... error ] */
-
-#if defined(DUK_USE_ERRCREATE)
- duk__err_augment_user(thr, DUK_STRIDX_ERR_CREATE);
-#endif
-}
-#endif /* DUK_USE_AUGMENT_ERROR_CREATE */
-
-/*
- * Augment an error at throw time; allow a user error handler (if defined)
- * to process/replace the error. The error to be augmented is at the
- * stack top.
- */
-
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
-DUK_INTERNAL void duk_err_augment_error_throw(duk_hthread *thr) {
-#if defined(DUK_USE_ERRTHROW)
- duk__err_augment_user(thr, DUK_STRIDX_ERR_THROW);
-#endif /* DUK_USE_ERRTHROW */
-}
-#endif /* DUK_USE_AUGMENT_ERROR_THROW */
-#line 1 "duk_error_longjmp.c"
-/*
- * Do a longjmp call, calling the fatal error handler if no
- * catchpoint exists.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL void duk_err_longjmp(duk_hthread *thr) {
- DUK_ASSERT(thr != NULL);
-
- DUK_DD(DUK_DDPRINT("longjmp error: type=%d iserror=%d value1=%!T value2=%!T",
- (int) thr->heap->lj.type, (int) thr->heap->lj.iserror,
- &thr->heap->lj.value1, &thr->heap->lj.value2));
-
-#if !defined(DUK_USE_CPP_EXCEPTIONS)
- /* If we don't have a jmpbuf_ptr, there is little we can do
- * except panic. The caller's expectation is that we never
- * return.
- *
- * With C++ exceptions we now just propagate an uncaught error
- * instead of invoking the fatal error handler. Because there's
- * a dummy jmpbuf for C++ exceptions now, this could be changed.
- */
- if (!thr->heap->lj.jmpbuf_ptr) {
-
- DUK_D(DUK_DPRINT("uncaught error: type=%d iserror=%d value1=%!T value2=%!T",
- (int) thr->heap->lj.type, (int) thr->heap->lj.iserror,
- &thr->heap->lj.value1, &thr->heap->lj.value2));
-
- duk_fatal((duk_context *) thr, DUK_ERR_UNCAUGHT_ERROR, "uncaught error");
- DUK_UNREACHABLE();
- }
-#endif /* DUK_USE_CPP_EXCEPTIONS */
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- {
- duk_internal_exception exc; /* dummy */
- throw exc;
- }
-#else /* DUK_USE_CPP_EXCEPTIONS */
- DUK_LONGJMP(thr->heap->lj.jmpbuf_ptr->jb);
-#endif /* DUK_USE_CPP_EXCEPTIONS */
-
- DUK_UNREACHABLE();
-}
-#line 1 "duk_error_misc.c"
-/*
- * Error helpers
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Helper to walk the thread chain and see if there is an active error
- * catcher. Protected calls or finally blocks aren't considered catching.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT) && \
- (defined(DUK_USE_DEBUGGER_THROW_NOTIFY) || defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT))
-DUK_LOCAL duk_bool_t duk__have_active_catcher(duk_hthread *thr) {
- /*
- * XXX: As noted above, a protected API call won't be counted as a
- * catcher. This is usually convenient, e.g. in the case of a top-
- * level duk_pcall(), but may not always be desirable. Perhaps add an
- * argument to treat them as catchers?
- */
-
- duk_size_t i;
-
- DUK_ASSERT(thr != NULL);
-
- while (thr != NULL) {
- for (i = 0; i < thr->catchstack_top; i++) {
- duk_catcher *cat = thr->catchstack + i;
- if (DUK_CAT_HAS_CATCH_ENABLED(cat)) {
- return 1; /* all we need to know */
- }
- }
- thr = thr->resumer;
- }
- return 0;
-}
-#endif /* DUK_USE_DEBUGGER_SUPPORT && (DUK_USE_DEBUGGER_THROW_NOTIFY || DUK_USE_DEBUGGER_PAUSE_UNCAUGHT) */
-
-/*
- * Get prototype object for an integer error code.
- */
-
-DUK_INTERNAL duk_hobject *duk_error_prototype_from_code(duk_hthread *thr, duk_errcode_t code) {
- switch (code) {
- case DUK_ERR_EVAL_ERROR:
- return thr->builtins[DUK_BIDX_EVAL_ERROR_PROTOTYPE];
- case DUK_ERR_RANGE_ERROR:
- return thr->builtins[DUK_BIDX_RANGE_ERROR_PROTOTYPE];
- case DUK_ERR_REFERENCE_ERROR:
- return thr->builtins[DUK_BIDX_REFERENCE_ERROR_PROTOTYPE];
- case DUK_ERR_SYNTAX_ERROR:
- return thr->builtins[DUK_BIDX_SYNTAX_ERROR_PROTOTYPE];
- case DUK_ERR_TYPE_ERROR:
- return thr->builtins[DUK_BIDX_TYPE_ERROR_PROTOTYPE];
- case DUK_ERR_URI_ERROR:
- return thr->builtins[DUK_BIDX_URI_ERROR_PROTOTYPE];
-
- /* XXX: more specific error classes? */
- case DUK_ERR_UNIMPLEMENTED_ERROR:
- case DUK_ERR_INTERNAL_ERROR:
- case DUK_ERR_ALLOC_ERROR:
- case DUK_ERR_ASSERTION_ERROR:
- case DUK_ERR_API_ERROR:
- case DUK_ERR_ERROR:
- default:
- return thr->builtins[DUK_BIDX_ERROR_PROTOTYPE];
- }
-}
-
-/*
- * Exposed helper for setting up heap longjmp state.
- */
-
-DUK_INTERNAL void duk_err_setup_heap_ljstate(duk_hthread *thr, duk_small_int_t lj_type) {
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- /* If something is thrown with the debugger attached and nobody will
- * catch it, execution is paused before the longjmp, turning over
- * control to the debug client. This allows local state to be examined
- * before the stack is unwound. Errors are not intercepted when debug
- * message loop is active (e.g. for Eval).
- */
-
- /* XXX: Allow customizing the pause and notify behavior at runtime
- * using debugger runtime flags. For now the behavior is fixed using
- * config options.
- */
-#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY) || defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) &&
- !thr->heap->dbg_processing &&
- lj_type == DUK_LJ_TYPE_THROW) {
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t fatal;
- duk_hobject *h_obj;
-
- /* Don't intercept a DoubleError, we may have caused the initial double
- * fault and attempting to intercept it will cause us to be called
- * recursively and exhaust the C stack.
- */
- h_obj = duk_get_hobject(ctx, -1);
- if (h_obj == thr->builtins[DUK_BIDX_DOUBLE_ERROR]) {
- DUK_D(DUK_DPRINT("built-in DoubleError instance thrown, not intercepting"));
- goto skip_throw_intercept;
- }
-
- DUK_D(DUK_DPRINT("throw with debugger attached, report to client"));
-
- fatal = !duk__have_active_catcher(thr);
-
-#if defined(DUK_USE_DEBUGGER_THROW_NOTIFY)
- /* Report it to the debug client */
- duk_debug_send_throw(thr, fatal);
-#endif
-
-#if defined(DUK_USE_DEBUGGER_PAUSE_UNCAUGHT)
- if (fatal) {
- DUK_D(DUK_DPRINT("throw will be fatal, halt before longjmp"));
- duk_debug_halt_execution(thr, 1 /*use_prev_pc*/);
- }
-#endif
- }
-
- skip_throw_intercept:
-#endif /* DUK_USE_DEBUGGER_THROW_NOTIFY || DUK_USE_DEBUGGER_PAUSE_UNCAUGHT */
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
- thr->heap->lj.type = lj_type;
-
- DUK_ASSERT(thr->valstack_top > thr->valstack);
- DUK_TVAL_SET_TVAL_UPDREF(thr, &thr->heap->lj.value1, thr->valstack_top - 1); /* side effects */
-
- duk_pop((duk_context *) thr);
-}
-#line 1 "duk_error_throw.c"
-/*
- * Create and throw an Ecmascript error object based on a code and a message.
- *
- * Used when we throw errors internally. Ecmascript generated error objects
- * are created by Ecmascript code, and the throwing is handled by the bytecode
- * executor.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Create and throw an error (originating from Duktape internally)
- *
- * Push an error object on top of the stack, possibly throw augmenting
- * the error, and finally longjmp.
- *
- * If an error occurs while we're dealing with the current error, we might
- * enter an infinite recursion loop. This is prevented by detecting a
- * "double fault" through the heap->handling_error flag; the recursion
- * then stops at the second level.
- */
-
-#ifdef DUK_USE_VERBOSE_ERRORS
-DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code, const char *msg, const char *filename, duk_int_t line) {
-#else
-DUK_INTERNAL void duk_err_create_and_throw(duk_hthread *thr, duk_errcode_t code) {
-#endif
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t double_error = thr->heap->handling_error;
-
-#ifdef DUK_USE_VERBOSE_ERRORS
- DUK_DD(DUK_DDPRINT("duk_err_create_and_throw(): code=%ld, msg=%s, filename=%s, line=%ld",
- (long) code, (const char *) msg,
- (const char *) filename, (long) line));
-#else
- DUK_DD(DUK_DDPRINT("duk_err_create_and_throw(): code=%ld", (long) code));
-#endif
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
-
- thr->heap->handling_error = 1;
-
- if (!double_error) {
- /* Allow headroom for calls during error handling (see GH-191).
- * We allow space for 10 additional recursions, with one extra
- * for, e.g. a print() call at the deepest level.
- */
- DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX);
- thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11;
- }
-
- DUK_ASSERT(thr->callstack_max == DUK_CALLSTACK_DEFAULT_MAX + DUK_CALLSTACK_GROW_STEP + 11); /* just making sure */
-
- /* Sync so that augmentation sees up-to-date activations, NULL
- * thr->ptr_curr_pc so that it's not used if side effects occur
- * in augmentation or longjmp handling.
- */
- duk_hthread_sync_and_null_currpc(thr);
-
- /*
- * Create and push an error object onto the top of stack.
- * If a "double error" occurs, use a fixed error instance
- * to avoid further trouble.
- */
-
- /* XXX: if attempt to push beyond allocated valstack, this double fault
- * handling fails miserably. We should really write the double error
- * directly to thr->heap->lj.value1 and avoid valstack use entirely.
- */
-
- if (double_error) {
- if (thr->builtins[DUK_BIDX_DOUBLE_ERROR]) {
- DUK_D(DUK_DPRINT("double fault detected -> push built-in fixed 'double error' instance"));
- duk_push_hobject_bidx(ctx, DUK_BIDX_DOUBLE_ERROR);
- } else {
- DUK_D(DUK_DPRINT("double fault detected; there is no built-in fixed 'double error' instance "
- "-> push the error code as a number"));
- duk_push_int(ctx, (duk_int_t) code);
- }
- } else {
- /* Error object is augmented at its creation here. */
- duk_require_stack(ctx, 1);
- /* XXX: unnecessary '%s' formatting here, but cannot use
- * 'msg' as a format string directly.
- */
-#ifdef DUK_USE_VERBOSE_ERRORS
- duk_push_error_object_raw(ctx,
- code | DUK_ERRCODE_FLAG_NOBLAME_FILELINE,
- filename,
- line,
- "%s",
- (const char *) msg);
-#else
- duk_push_error_object_raw(ctx,
- code | DUK_ERRCODE_FLAG_NOBLAME_FILELINE,
- NULL,
- 0,
- NULL);
-#endif
- }
-
- /*
- * Augment error (throw time), unless alloc/double error
- */
-
- if (double_error || code == DUK_ERR_ALLOC_ERROR) {
- DUK_D(DUK_DPRINT("alloc or double error: skip throw augmenting to avoid further trouble"));
- } else {
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT (before throw augment)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_err_augment_error_throw(thr);
-#endif
- }
-
- /*
- * Finally, longjmp
- */
-
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_THROW);
-
- thr->callstack_max = DUK_CALLSTACK_DEFAULT_MAX; /* reset callstack limit */
- thr->heap->handling_error = 0;
-
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (INTERNAL): %!iT, %!iT (after throw augment)",
- (duk_tval *) &thr->heap->lj.value1, (duk_tval *) &thr->heap->lj.value2));
-
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
-}
-
-/*
- * Helper for C function call negative return values.
- */
-
-DUK_INTERNAL void duk_error_throw_from_negative_rc(duk_hthread *thr, duk_ret_t rc) {
- duk_context *ctx = (duk_context *) thr;
- const char *msg;
- duk_errcode_t code;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(rc < 0);
-
- /* XXX: this generates quite large code - perhaps select the error
- * class based on the code and then just use the error 'name'?
- */
- /* XXX: shared strings */
-
- code = -rc;
-
- switch (rc) {
- case DUK_RET_UNIMPLEMENTED_ERROR: msg = "unimplemented"; break;
- case DUK_RET_UNSUPPORTED_ERROR: msg = "unsupported"; break;
- case DUK_RET_INTERNAL_ERROR: msg = "internal"; break;
- case DUK_RET_ALLOC_ERROR: msg = "alloc"; break;
- case DUK_RET_ASSERTION_ERROR: msg = "assertion"; break;
- case DUK_RET_API_ERROR: msg = "api"; break;
- case DUK_RET_UNCAUGHT_ERROR: msg = "uncaught"; break;
- case DUK_RET_ERROR: msg = "error"; break;
- case DUK_RET_EVAL_ERROR: msg = "eval"; break;
- case DUK_RET_RANGE_ERROR: msg = "range"; break;
- case DUK_RET_REFERENCE_ERROR: msg = "reference"; break;
- case DUK_RET_SYNTAX_ERROR: msg = "syntax"; break;
- case DUK_RET_TYPE_ERROR: msg = "type"; break;
- case DUK_RET_URI_ERROR: msg = "uri"; break;
- default: msg = "unknown"; break;
- }
-
- DUK_ASSERT(msg != NULL);
-
- /*
- * The __FILE__ and __LINE__ information is intentionally not used in the
- * creation of the error object, as it isn't useful in the tracedata. The
- * tracedata still contains the function which returned the negative return
- * code, and having the file/line of this function isn't very useful.
- */
-
- duk_error_raw(ctx, code, NULL, 0, "%s error (rc %ld)", (const char *) msg, (long) rc);
- DUK_UNREACHABLE();
-}
-#line 1 "duk_hbuffer_alloc.c"
-/*
- * duk_hbuffer allocation and freeing.
- */
-
-/* include removed: duk_internal.h */
-
-/* Allocate a new duk_hbuffer of a certain type and return a pointer to it
- * (NULL on error). Write buffer data pointer to 'out_bufdata' (only if
- * allocation successful).
- */
-DUK_INTERNAL duk_hbuffer *duk_hbuffer_alloc(duk_heap *heap, duk_size_t size, duk_small_uint_t flags, void **out_bufdata) {
- duk_hbuffer *res = NULL;
- duk_size_t header_size;
- duk_size_t alloc_size;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(out_bufdata != NULL);
-
- DUK_DDD(DUK_DDDPRINT("allocate hbuffer"));
-
- /* Size sanity check. Should not be necessary because caller is
- * required to check this, but we don't want to cause a segfault
- * if the size wraps either in duk_size_t computation or when
- * storing the size in a 16-bit field.
- */
- if (size > DUK_HBUFFER_MAX_BYTELEN) {
- DUK_D(DUK_DPRINT("hbuffer alloc failed: size too large: %ld", (long) size));
- return NULL; /* no need to write 'out_bufdata' */
- }
-
- if (flags & DUK_BUF_FLAG_EXTERNAL) {
- header_size = sizeof(duk_hbuffer_external);
- alloc_size = sizeof(duk_hbuffer_external);
- } else if (flags & DUK_BUF_FLAG_DYNAMIC) {
- header_size = sizeof(duk_hbuffer_dynamic);
- alloc_size = sizeof(duk_hbuffer_dynamic);
- } else {
- header_size = sizeof(duk_hbuffer_fixed);
- alloc_size = sizeof(duk_hbuffer_fixed) + size;
- DUK_ASSERT(alloc_size >= sizeof(duk_hbuffer_fixed)); /* no wrapping */
- }
-
- res = (duk_hbuffer *) DUK_ALLOC(heap, alloc_size);
- if (!res) {
- goto error;
- }
-
- /* zero everything unless requested not to do so */
-#if defined(DUK_USE_ZERO_BUFFER_DATA)
- DUK_MEMZERO((void *) res,
- (flags & DUK_BUF_FLAG_NOZERO) ? header_size : alloc_size);
-#else
- DUK_MEMZERO((void *) res, header_size);
-#endif
-
- if (flags & DUK_BUF_FLAG_EXTERNAL) {
- duk_hbuffer_external *h;
- h = (duk_hbuffer_external *) res;
- DUK_UNREF(h);
- *out_bufdata = NULL;
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
-#if defined(DUK_USE_HEAPPTR16)
-/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */
-#else
- DUK_HBUFFER_EXTERNAL_SET_DATA_PTR(heap, h, NULL);
-#endif
-#endif
- DUK_ASSERT(DUK_HBUFFER_EXTERNAL_GET_DATA_PTR(heap, h) == NULL);
- } else if (flags & DUK_BUF_FLAG_DYNAMIC) {
- duk_hbuffer_dynamic *h = (duk_hbuffer_dynamic *) res;
- void *ptr;
-
- if (size > 0) {
- DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL)); /* alloc external with size zero */
- DUK_DDD(DUK_DDDPRINT("dynamic buffer with nonzero size, alloc actual buffer"));
-#ifdef DUK_USE_ZERO_BUFFER_DATA
- ptr = DUK_ALLOC_ZEROED(heap, size);
-#else
- ptr = DUK_ALLOC(heap, size);
-#endif
- if (!ptr) {
- /* Because size > 0, NULL check is correct */
- goto error;
- }
- *out_bufdata = ptr;
-
- DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, ptr);
- } else {
- *out_bufdata = NULL;
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
-#if defined(DUK_USE_HEAPPTR16)
-/* the compressed pointer is zeroed which maps to NULL, so nothing to do. */
-#else
- DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(heap, h, NULL);
-#endif
-#endif
- DUK_ASSERT(DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, h) == NULL);
- }
- } else {
- *out_bufdata = (void *) ((duk_hbuffer_fixed *) res + 1);
- }
-
- DUK_HBUFFER_SET_SIZE(res, size);
-
- DUK_HEAPHDR_SET_TYPE(&res->hdr, DUK_HTYPE_BUFFER);
- if (flags & DUK_BUF_FLAG_DYNAMIC) {
- DUK_HBUFFER_SET_DYNAMIC(res);
- if (flags & DUK_BUF_FLAG_EXTERNAL) {
- DUK_HBUFFER_SET_EXTERNAL(res);
- }
- } else {
- DUK_ASSERT(!(flags & DUK_BUF_FLAG_EXTERNAL));
- }
- DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &res->hdr);
-
- DUK_DDD(DUK_DDDPRINT("allocated hbuffer: %p", (void *) res));
- return res;
-
- error:
- DUK_DD(DUK_DDPRINT("hbuffer allocation failed"));
-
- DUK_FREE(heap, res);
- return NULL; /* no need to write 'out_bufdata' */
-}
-
-/* For indirect allocs. */
-
-DUK_INTERNAL void *duk_hbuffer_get_dynalloc_ptr(duk_heap *heap, void *ud) {
- duk_hbuffer_dynamic *buf = (duk_hbuffer_dynamic *) ud;
- DUK_UNREF(heap);
- return (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, buf);
-}
-#line 1 "duk_hbuffer_ops.c"
-/*
- * duk_hbuffer operations such as resizing and inserting/appending data to
- * a dynamic buffer.
- *
- * Append operations append to the end of the buffer and they are relatively
- * efficient: the buffer is grown with a "spare" part relative to the buffer
- * size to minimize reallocations. Insert operations need to move existing
- * data forward in the buffer with memmove() and are not very efficient.
- * They are used e.g. by the regexp compiler to "backpatch" regexp bytecode.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Resizing
- */
-
-DUK_INTERNAL void duk_hbuffer_resize(duk_hthread *thr, duk_hbuffer_dynamic *buf, duk_size_t new_size) {
- void *res;
- duk_size_t prev_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf));
- DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf));
-
- /*
- * Maximum size check
- */
-
- if (new_size > DUK_HBUFFER_MAX_BYTELEN) {
- DUK_ERROR_RANGE(thr, "buffer too long");
- }
-
- /*
- * Note: use indirect realloc variant just in case mark-and-sweep
- * (finalizers) might resize this same buffer during garbage
- * collection.
- */
-
- res = DUK_REALLOC_INDIRECT(thr->heap, duk_hbuffer_get_dynalloc_ptr, (void *) buf, new_size);
- if (res != NULL || new_size == 0) {
- /* 'res' may be NULL if new allocation size is 0. */
-
- DUK_DDD(DUK_DDDPRINT("resized dynamic buffer %p:%ld -> %p:%ld",
- (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, buf),
- (long) DUK_HBUFFER_DYNAMIC_GET_SIZE(buf),
- (void *) res,
- (long) new_size));
-
- /*
- * The entire allocated buffer area, regardless of actual used
- * size, is kept zeroed in resizes for simplicity. If the buffer
- * is grown, zero the new part.
- */
-
- prev_size = DUK_HBUFFER_DYNAMIC_GET_SIZE(buf);
- if (new_size > prev_size) {
- DUK_ASSERT(new_size - prev_size > 0);
-#ifdef DUK_USE_ZERO_BUFFER_DATA
- DUK_MEMZERO((void *) ((char *) res + prev_size),
- (duk_size_t) (new_size - prev_size));
-#endif
- }
-
- DUK_HBUFFER_DYNAMIC_SET_SIZE(buf, new_size);
- DUK_HBUFFER_DYNAMIC_SET_DATA_PTR(thr->heap, buf, res);
- } else {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- DUK_ASSERT(res != NULL || new_size == 0);
-}
-
-DUK_INTERNAL void duk_hbuffer_reset(duk_hthread *thr, duk_hbuffer_dynamic *buf) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(buf));
- DUK_ASSERT(!DUK_HBUFFER_HAS_EXTERNAL(buf));
-
- duk_hbuffer_resize(thr, buf, 0);
-}
-/* include removed: duk_internal.h */
-#line 2 "duk_hbufferobject_misc.c"
-
-#if defined(DUK_USE_BUFFEROBJECT_SUPPORT)
-DUK_INTERNAL duk_uint_t duk_hbufferobject_clamp_bytelength(duk_hbufferobject *h_bufobj, duk_uint_t len) {
- duk_uint_t buf_size;
- duk_uint_t buf_avail;
-
- DUK_ASSERT(h_bufobj != NULL);
- DUK_ASSERT(h_bufobj->buf != NULL);
-
- buf_size = (duk_uint_t) DUK_HBUFFER_GET_SIZE(h_bufobj->buf);
- if (h_bufobj->offset > buf_size) {
- /* Slice starting point is beyond current length. */
- return 0;
- }
- buf_avail = buf_size - h_bufobj->offset;
-
- return buf_avail >= len ? len : buf_avail;
-}
-#endif /* DUK_USE_BUFFEROBJECT_SUPPORT */
-#line 1 "duk_heap_alloc.c"
-/*
- * duk_heap allocation and freeing.
- */
-
-/* include removed: duk_internal.h */
-
-/* Constants for built-in string data depacking. */
-#define DUK__BITPACK_LETTER_LIMIT 26
-#define DUK__BITPACK_UNDERSCORE 26
-#define DUK__BITPACK_FF 27
-#define DUK__BITPACK_SWITCH1 29
-#define DUK__BITPACK_SWITCH 30
-#define DUK__BITPACK_SEVENBIT 31
-
-#if defined(DUK_USE_ROM_STRINGS)
-/* Fixed seed value used with ROM strings. */
-#define DUK__FIXED_HASH_SEED 0xabcd1234
-#endif
-
-/*
- * Free a heap object.
- *
- * Free heap object and its internal (non-heap) pointers. Assumes that
- * caller has removed the object from heap allocated list or the string
- * intern table, and any weak references (which strings may have) have
- * been already dealt with.
- */
-
-DUK_INTERNAL void duk_free_hobject_inner(duk_heap *heap, duk_hobject *h) {
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- DUK_FREE(heap, DUK_HOBJECT_GET_PROPS(heap, h));
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
- DUK_UNREF(f);
- /* Currently nothing to free; 'data' is a heap object */
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- duk_hnativefunction *f = (duk_hnativefunction *) h;
- DUK_UNREF(f);
- /* Currently nothing to free */
- } else if (DUK_HOBJECT_IS_THREAD(h)) {
- duk_hthread *t = (duk_hthread *) h;
- DUK_FREE(heap, t->valstack);
- DUK_FREE(heap, t->callstack);
- DUK_FREE(heap, t->catchstack);
- /* Don't free h->resumer because it exists in the heap.
- * Callstack entries also contain function pointers which
- * are not freed for the same reason.
- */
-
- /* XXX: with 'caller' property the callstack would need
- * to be unwound to update the 'caller' properties of
- * functions in the callstack.
- */
- }
-}
-
-DUK_INTERNAL void duk_free_hbuffer_inner(duk_heap *heap, duk_hbuffer *h) {
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- if (DUK_HBUFFER_HAS_DYNAMIC(h) && !DUK_HBUFFER_HAS_EXTERNAL(h)) {
- duk_hbuffer_dynamic *g = (duk_hbuffer_dynamic *) h;
- DUK_DDD(DUK_DDDPRINT("free dynamic buffer %p", (void *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g)));
- DUK_FREE(heap, DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(heap, g));
- }
-}
-
-DUK_INTERNAL void duk_free_hstring_inner(duk_heap *heap, duk_hstring *h) {
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- DUK_UNREF(heap);
- DUK_UNREF(h);
-
-#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_FREE)
- if (DUK_HSTRING_HAS_EXTDATA(h)) {
- DUK_DDD(DUK_DDDPRINT("free extstr: hstring %!O, extdata: %p",
- h, DUK_HSTRING_GET_EXTDATA((duk_hstring_external *) h)));
- DUK_USE_EXTSTR_FREE(heap->heap_udata, (const void *) DUK_HSTRING_GET_EXTDATA((duk_hstring_external *) h));
- }
-#endif
-}
-
-DUK_INTERNAL void duk_heap_free_heaphdr_raw(duk_heap *heap, duk_heaphdr *hdr) {
- DUK_ASSERT(heap);
- DUK_ASSERT(hdr);
-
- DUK_DDD(DUK_DDDPRINT("free heaphdr %p, htype %ld", (void *) hdr, (long) DUK_HEAPHDR_GET_TYPE(hdr)));
-
- switch ((int) DUK_HEAPHDR_GET_TYPE(hdr)) {
- case DUK_HTYPE_STRING:
- duk_free_hstring_inner(heap, (duk_hstring *) hdr);
- break;
- case DUK_HTYPE_OBJECT:
- duk_free_hobject_inner(heap, (duk_hobject *) hdr);
- break;
- case DUK_HTYPE_BUFFER:
- duk_free_hbuffer_inner(heap, (duk_hbuffer *) hdr);
- break;
- default:
- DUK_UNREACHABLE();
- }
-
- DUK_FREE(heap, hdr);
-}
-
-/*
- * Free the heap.
- *
- * Frees heap-related non-heap-tracked allocations such as the
- * string intern table; then frees the heap allocated objects;
- * and finally frees the heap structure itself. Reference counts
- * and GC markers are ignored (and not updated) in this process,
- * and finalizers won't be called.
- *
- * The heap pointer and heap object pointers must not be used
- * after this call.
- */
-
-DUK_LOCAL void duk__free_allocated(duk_heap *heap) {
- duk_heaphdr *curr;
- duk_heaphdr *next;
-
- curr = heap->heap_allocated;
- while (curr) {
- /* We don't log or warn about freeing zero refcount objects
- * because they may happen with finalizer processing.
- */
-
- DUK_DDD(DUK_DDDPRINT("FINALFREE (allocated): %!iO",
- (duk_heaphdr *) curr));
- next = DUK_HEAPHDR_GET_NEXT(heap, curr);
- duk_heap_free_heaphdr_raw(heap, curr);
- curr = next;
- }
-}
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
-DUK_LOCAL void duk__free_refzero_list(duk_heap *heap) {
- duk_heaphdr *curr;
- duk_heaphdr *next;
-
- curr = heap->refzero_list;
- while (curr) {
- DUK_DDD(DUK_DDDPRINT("FINALFREE (refzero_list): %!iO",
- (duk_heaphdr *) curr));
- next = DUK_HEAPHDR_GET_NEXT(heap, curr);
- duk_heap_free_heaphdr_raw(heap, curr);
- curr = next;
- }
-}
-#endif
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
-DUK_LOCAL void duk__free_markandsweep_finalize_list(duk_heap *heap) {
- duk_heaphdr *curr;
- duk_heaphdr *next;
-
- curr = heap->finalize_list;
- while (curr) {
- DUK_DDD(DUK_DDDPRINT("FINALFREE (finalize_list): %!iO",
- (duk_heaphdr *) curr));
- next = DUK_HEAPHDR_GET_NEXT(heap, curr);
- duk_heap_free_heaphdr_raw(heap, curr);
- curr = next;
- }
-}
-#endif
-
-DUK_LOCAL void duk__free_stringtable(duk_heap *heap) {
- /* strings are only tracked by stringtable */
- duk_heap_free_strtab(heap);
-}
-
-DUK_LOCAL void duk__free_run_finalizers(duk_heap *heap) {
- duk_hthread *thr;
- duk_heaphdr *curr;
- duk_uint_t round_no;
- duk_size_t count_all;
- duk_size_t count_finalized;
- duk_size_t curr_limit;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(heap->heap_thread != NULL);
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
- DUK_ASSERT(heap->refzero_list == NULL); /* refzero not running -> must be empty */
-#endif
-#if defined(DUK_USE_MARK_AND_SWEEP)
- DUK_ASSERT(heap->finalize_list == NULL); /* mark-and-sweep not running -> must be empty */
-#endif
-
- /* XXX: here again finalizer thread is the heap_thread which needs
- * to be coordinated with finalizer thread fixes.
- */
- thr = heap->heap_thread;
- DUK_ASSERT(thr != NULL);
-
- /* Prevent mark-and-sweep for the pending finalizers, also prevents
- * refzero handling from moving objects away from the heap_allocated
- * list. (The flag meaning is slightly abused here.)
- */
- DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap));
- DUK_HEAP_SET_MARKANDSWEEP_RUNNING(heap);
-
- curr_limit = 0; /* suppress warning, not used */
- for (round_no = 0; ; round_no++) {
- curr = heap->heap_allocated;
- count_all = 0;
- count_finalized = 0;
- while (curr) {
- count_all++;
- if (DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT) {
- /* Only objects in heap_allocated may have finalizers. Check that
- * the object itself has a _Finalizer property (own or inherited)
- * so that we don't execute finalizers for e.g. Proxy objects.
- */
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(curr != NULL);
-
- if (duk_hobject_hasprop_raw(thr, (duk_hobject *) curr, DUK_HTHREAD_STRING_INT_FINALIZER(thr))) {
- if (!DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) curr)) {
- DUK_ASSERT(DUK_HEAP_HAS_FINALIZER_NORESCUE(heap)); /* maps to finalizer 2nd argument */
- duk_hobject_run_finalizer(thr, (duk_hobject *) curr);
- count_finalized++;
- }
- }
- }
- curr = DUK_HEAPHDR_GET_NEXT(heap, curr);
- }
-
- /* Each round of finalizer execution may spawn new finalizable objects
- * which is normal behavior for some applications. Allow multiple
- * rounds of finalization, but use a shrinking limit based on the
- * first round to detect the case where a runaway finalizer creates
- * an unbounded amount of new finalizable objects. Finalizer rescue
- * is not supported: the semantics are unclear because most of the
- * objects being finalized here are already reachable. The finalizer
- * is given a boolean to indicate that rescue is not possible.
- *
- * See discussion in: https://github.com/svaarala/duktape/pull/473
- */
-
- if (round_no == 0) {
- /* Cannot wrap: each object is at least 8 bytes so count is
- * at most 1/8 of that.
- */
- curr_limit = count_all * 2;
- } else {
- curr_limit = (curr_limit * 3) / 4; /* Decrease by 25% every round */
- }
- DUK_D(DUK_DPRINT("finalizer round %ld complete, %ld objects, tried to execute %ld finalizers, current limit is %ld",
- (long) round_no, (long) count_all, (long) count_finalized, (long) curr_limit));
-
- if (count_finalized == 0) {
- DUK_D(DUK_DPRINT("no more finalizable objects, forced finalization finished"));
- break;
- }
- if (count_finalized >= curr_limit) {
- DUK_D(DUK_DPRINT("finalizer count above limit, potentially runaway finalizer; skip remaining finalizers"));
- break;
- }
- }
-
- DUK_ASSERT(DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap));
- DUK_HEAP_CLEAR_MARKANDSWEEP_RUNNING(heap);
-}
-
-DUK_INTERNAL void duk_heap_free(duk_heap *heap) {
- DUK_D(DUK_DPRINT("free heap: %p", (void *) heap));
-
-#if defined(DUK_USE_DEBUG)
- duk_heap_dump_strtab(heap);
-#endif
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- /* Detach a debugger if attached (can be called multiple times)
- * safely.
- */
- /* XXX: Add a flag to reject an attempt to re-attach? Otherwise
- * the detached callback may immediately reattach.
- */
- duk_debug_do_detach(heap);
-#endif
-
- /* Execute finalizers before freeing the heap, even for reachable
- * objects, and regardless of whether or not mark-and-sweep is
- * enabled. This gives finalizers the chance to free any native
- * resources like file handles, allocations made outside Duktape,
- * etc. This is quite tricky to get right, so that all finalizer
- * guarantees are honored.
- *
- * XXX: this perhaps requires an execution time limit.
- */
- DUK_D(DUK_DPRINT("execute finalizers before freeing heap"));
-#if defined(DUK_USE_MARK_AND_SWEEP)
- /* Run mark-and-sweep a few times just in case (unreachable object
- * finalizers run already here). The last round must rescue objects
- * from the previous round without running any more finalizers. This
- * ensures rescued objects get their FINALIZED flag cleared so that
- * their finalizer is called once more in forced finalization to
- * satisfy finalizer guarantees. However, we don't want to run any
- * more finalizer because that'd required one more loop, and so on.
- */
- DUK_D(DUK_DPRINT("forced gc #1 in heap destruction"));
- duk_heap_mark_and_sweep(heap, 0);
- DUK_D(DUK_DPRINT("forced gc #2 in heap destruction"));
- duk_heap_mark_and_sweep(heap, 0);
- DUK_D(DUK_DPRINT("forced gc #3 in heap destruction (don't run finalizers)"));
- duk_heap_mark_and_sweep(heap, DUK_MS_FLAG_SKIP_FINALIZERS); /* skip finalizers; queue finalizable objects to heap_allocated */
-#endif
-
- DUK_HEAP_SET_FINALIZER_NORESCUE(heap); /* rescue no longer supported */
- duk__free_run_finalizers(heap);
-
- /* Note: heap->heap_thread, heap->curr_thread, and heap->heap_object
- * are on the heap allocated list.
- */
-
- DUK_D(DUK_DPRINT("freeing heap objects of heap: %p", (void *) heap));
- duk__free_allocated(heap);
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
- DUK_D(DUK_DPRINT("freeing refzero list of heap: %p", (void *) heap));
- duk__free_refzero_list(heap);
-#endif
-
-#if defined(DUK_USE_MARK_AND_SWEEP)
- DUK_D(DUK_DPRINT("freeing mark-and-sweep finalize list of heap: %p", (void *) heap));
- duk__free_markandsweep_finalize_list(heap);
-#endif
-
- DUK_D(DUK_DPRINT("freeing string table of heap: %p", (void *) heap));
- duk__free_stringtable(heap);
-
- DUK_D(DUK_DPRINT("freeing heap structure: %p", (void *) heap));
- heap->free_func(heap->heap_udata, heap);
-}
-
-/*
- * Allocate a heap.
- *
- * String table is initialized with built-in strings from genbuiltins.py,
- * either by dynamically creating the strings or by referring to ROM strings.
- */
-
-#if defined(DUK_USE_ROM_STRINGS)
-DUK_LOCAL duk_bool_t duk__init_heap_strings(duk_heap *heap) {
-#if defined(DUK_USE_ASSERTIONS)
- duk_small_uint_t i;
-#endif
-
- /* With ROM-based strings, heap->strs[] and thr->strs[] are omitted
- * so nothing to initialize for strs[].
- */
-
-#if defined(DUK_USE_ASSERTIONS)
- for (i = 0; i < sizeof(duk_rom_strings) / sizeof(const duk_hstring *); i++) {
- duk_uint32_t hash;
- const duk_hstring *h;
- h = duk_rom_strings[i];
- DUK_ASSERT(h != NULL);
- hash = duk_heap_hashstring(heap, (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h));
- DUK_DD(DUK_DDPRINT("duk_rom_strings[%d] -> hash 0x%08lx, computed 0x%08lx",
- (int) i, (unsigned long) DUK_HSTRING_GET_HASH(h), (unsigned long) hash));
- DUK_ASSERT(hash == (duk_uint32_t) DUK_HSTRING_GET_HASH(h));
- }
-#endif
- return 1;
-}
-#else /* DUK_USE_ROM_STRINGS */
-DUK_LOCAL duk_bool_t duk__init_heap_strings(duk_heap *heap) {
- duk_bitdecoder_ctx bd_ctx;
- duk_bitdecoder_ctx *bd = &bd_ctx; /* convenience */
- duk_small_uint_t i, j;
-
- DUK_MEMZERO(&bd_ctx, sizeof(bd_ctx));
- bd->data = (const duk_uint8_t *) duk_strings_data;
- bd->length = (duk_size_t) DUK_STRDATA_DATA_LENGTH;
-
- for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) {
- duk_uint8_t tmp[DUK_STRDATA_MAX_STRLEN];
- duk_hstring *h;
- duk_small_uint_t len;
- duk_small_uint_t mode;
- duk_small_uint_t t;
-
- len = duk_bd_decode(bd, 5);
- mode = 32; /* 0 = uppercase, 32 = lowercase (= 'a' - 'A') */
- for (j = 0; j < len; j++) {
- t = duk_bd_decode(bd, 5);
- if (t < DUK__BITPACK_LETTER_LIMIT) {
- t = t + DUK_ASC_UC_A + mode;
- } else if (t == DUK__BITPACK_UNDERSCORE) {
- t = DUK_ASC_UNDERSCORE;
- } else if (t == DUK__BITPACK_FF) {
- /* Internal keys are prefixed with 0xFF in the stringtable
- * (which makes them invalid UTF-8 on purpose).
- */
- t = 0xff;
- } else if (t == DUK__BITPACK_SWITCH1) {
- t = duk_bd_decode(bd, 5);
- DUK_ASSERT_DISABLE(t >= 0); /* unsigned */
- DUK_ASSERT(t <= 25);
- t = t + DUK_ASC_UC_A + (mode ^ 32);
- } else if (t == DUK__BITPACK_SWITCH) {
- mode = mode ^ 32;
- t = duk_bd_decode(bd, 5);
- DUK_ASSERT_DISABLE(t >= 0);
- DUK_ASSERT(t <= 25);
- t = t + DUK_ASC_UC_A + mode;
- } else if (t == DUK__BITPACK_SEVENBIT) {
- t = duk_bd_decode(bd, 7);
- }
- tmp[j] = (duk_uint8_t) t;
- }
-
- /* No need to length check string: it will never exceed even
- * the 16-bit length maximum.
- */
- DUK_ASSERT(len <= 0xffffUL);
- DUK_DDD(DUK_DDDPRINT("intern built-in string %ld", (long) i));
- h = duk_heap_string_intern(heap, tmp, len);
- if (!h) {
- goto error;
- }
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) h));
-
- /* Special flags checks. Since these strings are always
- * reachable and a string cannot appear twice in the string
- * table, there's no need to check/set these flags elsewhere.
- * The 'internal' flag is set by string intern code.
- */
- if (i == DUK_STRIDX_EVAL || i == DUK_STRIDX_LC_ARGUMENTS) {
- DUK_HSTRING_SET_EVAL_OR_ARGUMENTS(h);
- }
- if (i >= DUK_STRIDX_START_RESERVED && i < DUK_STRIDX_END_RESERVED) {
- DUK_HSTRING_SET_RESERVED_WORD(h);
- if (i >= DUK_STRIDX_START_STRICT_RESERVED) {
- DUK_HSTRING_SET_STRICT_RESERVED_WORD(h);
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("interned: %!O", (duk_heaphdr *) h));
-
- /* XXX: The incref macro takes a thread pointer but doesn't
- * use it right now.
- */
- DUK_HSTRING_INCREF(_never_referenced_, h);
-
-#if defined(DUK_USE_HEAPPTR16)
- heap->strs16[i] = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-#else
- heap->strs[i] = h;
-#endif
- }
-
- return 1;
-
- error:
- return 0;
-}
-#endif /* DUK_USE_ROM_STRINGS */
-
-DUK_LOCAL duk_bool_t duk__init_heap_thread(duk_heap *heap) {
- duk_hthread *thr;
-
- DUK_DD(DUK_DDPRINT("heap init: alloc heap thread"));
- thr = duk_hthread_alloc(heap,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_THREAD |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_THREAD));
- if (!thr) {
- DUK_D(DUK_DPRINT("failed to alloc heap_thread"));
- return 0;
- }
- thr->state = DUK_HTHREAD_STATE_INACTIVE;
-#if defined(DUK_USE_ROM_STRINGS)
- /* No strs[] pointer. */
-#else /* DUK_USE_ROM_STRINGS */
-#if defined(DUK_USE_HEAPPTR16)
- thr->strs16 = heap->strs16;
-#else
- thr->strs = heap->strs;
-#endif
-#endif /* DUK_USE_ROM_STRINGS */
-
- heap->heap_thread = thr;
- DUK_HTHREAD_INCREF(thr, thr); /* Note: first argument not really used */
-
- /* 'thr' is now reachable */
-
- if (!duk_hthread_init_stacks(heap, thr)) {
- return 0;
- }
-
- /* XXX: this may now fail, and is not handled correctly */
- duk_hthread_create_builtin_objects(thr);
-
- /* default prototype (Note: 'thr' must be reachable) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, (duk_hobject *) thr, thr->builtins[DUK_BIDX_THREAD_PROTOTYPE]);
-
- return 1;
-}
-
-#if defined(DUK_USE_DEBUG)
-#define DUK__DUMPSZ(t) do { \
- DUK_D(DUK_DPRINT("" #t "=%ld", (long) sizeof(t))); \
- } while (0)
-
-/* These is not 100% because format would need to be non-portable "long long".
- * Also print out as doubles to catch cases where the "long" type is not wide
- * enough; the limits will then not be printed accurately but the magnitude
- * will be correct.
- */
-#define DUK__DUMPLM_SIGNED_RAW(t,a,b) do { \
- DUK_D(DUK_DPRINT(t "=[%ld,%ld]=[%lf,%lf]", \
- (long) (a), (long) (b), \
- (double) (a), (double) (b))); \
- } while (0)
-#define DUK__DUMPLM_UNSIGNED_RAW(t,a,b) do { \
- DUK_D(DUK_DPRINT(t "=[%lu,%lu]=[%lf,%lf]", \
- (unsigned long) (a), (unsigned long) (b), \
- (double) (a), (double) (b))); \
- } while (0)
-#define DUK__DUMPLM_SIGNED(t) do { \
- DUK__DUMPLM_SIGNED_RAW("DUK_" #t "_{MIN,MAX}", DUK_##t##_MIN, DUK_##t##_MAX); \
- } while (0)
-#define DUK__DUMPLM_UNSIGNED(t) do { \
- DUK__DUMPLM_UNSIGNED_RAW("DUK_" #t "_{MIN,MAX}", DUK_##t##_MIN, DUK_##t##_MAX); \
- } while (0)
-
-DUK_LOCAL void duk__dump_type_sizes(void) {
- DUK_D(DUK_DPRINT("sizeof()"));
-
- /* basic platform types */
- DUK__DUMPSZ(char);
- DUK__DUMPSZ(short);
- DUK__DUMPSZ(int);
- DUK__DUMPSZ(long);
- DUK__DUMPSZ(double);
- DUK__DUMPSZ(void *);
- DUK__DUMPSZ(size_t);
-
- /* basic types from duk_features.h */
- DUK__DUMPSZ(duk_uint8_t);
- DUK__DUMPSZ(duk_int8_t);
- DUK__DUMPSZ(duk_uint16_t);
- DUK__DUMPSZ(duk_int16_t);
- DUK__DUMPSZ(duk_uint32_t);
- DUK__DUMPSZ(duk_int32_t);
- DUK__DUMPSZ(duk_uint64_t);
- DUK__DUMPSZ(duk_int64_t);
- DUK__DUMPSZ(duk_uint_least8_t);
- DUK__DUMPSZ(duk_int_least8_t);
- DUK__DUMPSZ(duk_uint_least16_t);
- DUK__DUMPSZ(duk_int_least16_t);
- DUK__DUMPSZ(duk_uint_least32_t);
- DUK__DUMPSZ(duk_int_least32_t);
-#if defined(DUK_USE_64BIT_OPS)
- DUK__DUMPSZ(duk_uint_least64_t);
- DUK__DUMPSZ(duk_int_least64_t);
-#endif
- DUK__DUMPSZ(duk_uint_fast8_t);
- DUK__DUMPSZ(duk_int_fast8_t);
- DUK__DUMPSZ(duk_uint_fast16_t);
- DUK__DUMPSZ(duk_int_fast16_t);
- DUK__DUMPSZ(duk_uint_fast32_t);
- DUK__DUMPSZ(duk_int_fast32_t);
-#if defined(DUK_USE_64BIT_OPS)
- DUK__DUMPSZ(duk_uint_fast64_t);
- DUK__DUMPSZ(duk_int_fast64_t);
-#endif
- DUK__DUMPSZ(duk_uintptr_t);
- DUK__DUMPSZ(duk_intptr_t);
- DUK__DUMPSZ(duk_uintmax_t);
- DUK__DUMPSZ(duk_intmax_t);
- DUK__DUMPSZ(duk_double_t);
-
- /* important chosen base types */
- DUK__DUMPSZ(duk_int_t);
- DUK__DUMPSZ(duk_uint_t);
- DUK__DUMPSZ(duk_int_fast_t);
- DUK__DUMPSZ(duk_uint_fast_t);
- DUK__DUMPSZ(duk_small_int_t);
- DUK__DUMPSZ(duk_small_uint_t);
- DUK__DUMPSZ(duk_small_int_fast_t);
- DUK__DUMPSZ(duk_small_uint_fast_t);
-
- /* some derived types */
- DUK__DUMPSZ(duk_codepoint_t);
- DUK__DUMPSZ(duk_ucodepoint_t);
- DUK__DUMPSZ(duk_idx_t);
- DUK__DUMPSZ(duk_errcode_t);
- DUK__DUMPSZ(duk_uarridx_t);
-
- /* tval */
- DUK__DUMPSZ(duk_double_union);
- DUK__DUMPSZ(duk_tval);
-
- /* structs from duk_forwdecl.h */
- DUK__DUMPSZ(duk_jmpbuf); /* just one 'int' for C++ exceptions */
- DUK__DUMPSZ(duk_heaphdr);
- DUK__DUMPSZ(duk_heaphdr_string);
- DUK__DUMPSZ(duk_hstring);
- DUK__DUMPSZ(duk_hstring_external);
- DUK__DUMPSZ(duk_hobject);
- DUK__DUMPSZ(duk_hcompiledfunction);
- DUK__DUMPSZ(duk_hnativefunction);
- DUK__DUMPSZ(duk_hthread);
- DUK__DUMPSZ(duk_hbuffer);
- DUK__DUMPSZ(duk_hbuffer_fixed);
- DUK__DUMPSZ(duk_hbuffer_dynamic);
- DUK__DUMPSZ(duk_hbuffer_external);
- DUK__DUMPSZ(duk_propaccessor);
- DUK__DUMPSZ(duk_propvalue);
- DUK__DUMPSZ(duk_propdesc);
- DUK__DUMPSZ(duk_heap);
-#if defined(DUK_USE_STRTAB_CHAIN)
- DUK__DUMPSZ(duk_strtab_entry);
-#endif
- DUK__DUMPSZ(duk_activation);
- DUK__DUMPSZ(duk_catcher);
- DUK__DUMPSZ(duk_strcache);
- DUK__DUMPSZ(duk_ljstate);
- DUK__DUMPSZ(duk_fixedbuffer);
- DUK__DUMPSZ(duk_bitdecoder_ctx);
- DUK__DUMPSZ(duk_bitencoder_ctx);
- DUK__DUMPSZ(duk_token);
- DUK__DUMPSZ(duk_re_token);
- DUK__DUMPSZ(duk_lexer_point);
- DUK__DUMPSZ(duk_lexer_ctx);
- DUK__DUMPSZ(duk_compiler_instr);
- DUK__DUMPSZ(duk_compiler_func);
- DUK__DUMPSZ(duk_compiler_ctx);
- DUK__DUMPSZ(duk_re_matcher_ctx);
- DUK__DUMPSZ(duk_re_compiler_ctx);
-}
-DUK_LOCAL void duk__dump_type_limits(void) {
- DUK_D(DUK_DPRINT("limits"));
-
- /* basic types */
- DUK__DUMPLM_SIGNED(INT8);
- DUK__DUMPLM_UNSIGNED(UINT8);
- DUK__DUMPLM_SIGNED(INT_FAST8);
- DUK__DUMPLM_UNSIGNED(UINT_FAST8);
- DUK__DUMPLM_SIGNED(INT_LEAST8);
- DUK__DUMPLM_UNSIGNED(UINT_LEAST8);
- DUK__DUMPLM_SIGNED(INT16);
- DUK__DUMPLM_UNSIGNED(UINT16);
- DUK__DUMPLM_SIGNED(INT_FAST16);
- DUK__DUMPLM_UNSIGNED(UINT_FAST16);
- DUK__DUMPLM_SIGNED(INT_LEAST16);
- DUK__DUMPLM_UNSIGNED(UINT_LEAST16);
- DUK__DUMPLM_SIGNED(INT32);
- DUK__DUMPLM_UNSIGNED(UINT32);
- DUK__DUMPLM_SIGNED(INT_FAST32);
- DUK__DUMPLM_UNSIGNED(UINT_FAST32);
- DUK__DUMPLM_SIGNED(INT_LEAST32);
- DUK__DUMPLM_UNSIGNED(UINT_LEAST32);
-#if defined(DUK_USE_64BIT_OPS)
- DUK__DUMPLM_SIGNED(INT64);
- DUK__DUMPLM_UNSIGNED(UINT64);
- DUK__DUMPLM_SIGNED(INT_FAST64);
- DUK__DUMPLM_UNSIGNED(UINT_FAST64);
- DUK__DUMPLM_SIGNED(INT_LEAST64);
- DUK__DUMPLM_UNSIGNED(UINT_LEAST64);
-#endif
- DUK__DUMPLM_SIGNED(INTPTR);
- DUK__DUMPLM_UNSIGNED(UINTPTR);
- DUK__DUMPLM_SIGNED(INTMAX);
- DUK__DUMPLM_UNSIGNED(UINTMAX);
-
- /* derived types */
- DUK__DUMPLM_SIGNED(INT);
- DUK__DUMPLM_UNSIGNED(UINT);
- DUK__DUMPLM_SIGNED(INT_FAST);
- DUK__DUMPLM_UNSIGNED(UINT_FAST);
- DUK__DUMPLM_SIGNED(SMALL_INT);
- DUK__DUMPLM_UNSIGNED(SMALL_UINT);
- DUK__DUMPLM_SIGNED(SMALL_INT_FAST);
- DUK__DUMPLM_UNSIGNED(SMALL_UINT_FAST);
-}
-#undef DUK__DUMPSZ
-#undef DUK__DUMPLM_SIGNED_RAW
-#undef DUK__DUMPLM_UNSIGNED_RAW
-#undef DUK__DUMPLM_SIGNED
-#undef DUK__DUMPLM_UNSIGNED
-
-DUK_LOCAL void duk__dump_misc_options(void) {
- DUK_D(DUK_DPRINT("DUK_VERSION: %ld", (long) DUK_VERSION));
- DUK_D(DUK_DPRINT("DUK_GIT_DESCRIBE: %s", DUK_GIT_DESCRIBE));
- DUK_D(DUK_DPRINT("OS string: %s", DUK_USE_OS_STRING));
- DUK_D(DUK_DPRINT("architecture string: %s", DUK_USE_ARCH_STRING));
- DUK_D(DUK_DPRINT("compiler string: %s", DUK_USE_COMPILER_STRING));
-#if defined(DUK_USE_PACKED_TVAL)
- DUK_D(DUK_DPRINT("DUK_USE_PACKED_TVAL: yes"));
-#else
- DUK_D(DUK_DPRINT("DUK_USE_PACKED_TVAL: no"));
-#endif
-#if defined(DUK_USE_VARIADIC_MACROS)
- DUK_D(DUK_DPRINT("DUK_USE_VARIADIC_MACROS: yes"));
-#else
- DUK_D(DUK_DPRINT("DUK_USE_VARIADIC_MACROS: no"));
-#endif
-#if defined(DUK_USE_INTEGER_LE)
- DUK_D(DUK_DPRINT("integer endianness: little"));
-#elif defined(DUK_USE_INTEGER_ME)
- DUK_D(DUK_DPRINT("integer endianness: mixed"));
-#elif defined(DUK_USE_INTEGER_BE)
- DUK_D(DUK_DPRINT("integer endianness: big"));
-#else
- DUK_D(DUK_DPRINT("integer endianness: ???"));
-#endif
-#if defined(DUK_USE_DOUBLE_LE)
- DUK_D(DUK_DPRINT("IEEE double endianness: little"));
-#elif defined(DUK_USE_DOUBLE_ME)
- DUK_D(DUK_DPRINT("IEEE double endianness: mixed"));
-#elif defined(DUK_USE_DOUBLE_BE)
- DUK_D(DUK_DPRINT("IEEE double endianness: big"));
-#else
- DUK_D(DUK_DPRINT("IEEE double endianness: ???"));
-#endif
-}
-#endif /* DUK_USE_DEBUG */
-
-DUK_INTERNAL
-duk_heap *duk_heap_alloc(duk_alloc_function alloc_func,
- duk_realloc_function realloc_func,
- duk_free_function free_func,
- void *heap_udata,
- duk_fatal_function fatal_func) {
- duk_heap *res = NULL;
-
- /* Silence a few global unused warnings here. */
- DUK_UNREF(duk_str_unsupported);
-
- DUK_D(DUK_DPRINT("allocate heap"));
-
- /*
- * Debug dump type sizes
- */
-
-#if defined(DUK_USE_DEBUG)
- duk__dump_misc_options();
- duk__dump_type_sizes();
- duk__dump_type_limits();
-#endif
-
- /*
- * If selftests enabled, run them as early as possible
- */
-#if defined(DUK_USE_SELF_TESTS)
- DUK_D(DUK_DPRINT("running self tests"));
- duk_selftest_run_tests();
- DUK_D(DUK_DPRINT("self tests passed"));
-#endif
-
- /*
- * Computed values (e.g. INFINITY)
- */
-
-#if defined(DUK_USE_COMPUTED_NAN)
- do {
- /* Workaround for some exotic platforms where NAN is missing
- * and the expression (0.0 / 0.0) does NOT result in a NaN.
- * Such platforms use the global 'duk_computed_nan' which must
- * be initialized at runtime. Use 'volatile' to ensure that
- * the compiler will actually do the computation and not try
- * to do constant folding which might result in the original
- * problem.
- */
- volatile double dbl1 = 0.0;
- volatile double dbl2 = 0.0;
- duk_computed_nan = dbl1 / dbl2;
- } while (0);
-#endif
-
-#if defined(DUK_USE_COMPUTED_INFINITY)
- do {
- /* Similar workaround for INFINITY. */
- volatile double dbl1 = 1.0;
- volatile double dbl2 = 0.0;
- duk_computed_infinity = dbl1 / dbl2;
- } while (0);
-#endif
-
- /*
- * Allocate heap struct
- *
- * Use a raw call, all macros expect the heap to be initialized
- */
-
- res = (duk_heap *) alloc_func(heap_udata, sizeof(duk_heap));
- if (!res) {
- goto error;
- }
-
- /*
- * Zero the struct, and start initializing roughly in order
- */
-
- DUK_MEMZERO(res, sizeof(*res));
-
- /* explicit NULL inits */
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
- res->heap_udata = NULL;
- res->heap_allocated = NULL;
-#if defined(DUK_USE_REFERENCE_COUNTING)
- res->refzero_list = NULL;
- res->refzero_list_tail = NULL;
-#endif
-#if defined(DUK_USE_MARK_AND_SWEEP)
- res->finalize_list = NULL;
-#endif
- res->heap_thread = NULL;
- res->curr_thread = NULL;
- res->heap_object = NULL;
-#if defined(DUK_USE_STRTAB_CHAIN)
- /* nothing to NULL */
-#elif defined(DUK_USE_STRTAB_PROBE)
-#if defined(DUK_USE_HEAPPTR16)
- res->strtable16 = (duk_uint16_t *) NULL;
-#else
- res->strtable = (duk_hstring **) NULL;
-#endif
-#endif
-#if defined(DUK_USE_ROM_STRINGS)
- /* no res->strs[] */
-#else /* DUK_USE_ROM_STRINGS */
-#if defined(DUK_USE_HEAPPTR16)
- /* res->strs16[] is zeroed and zero decodes to NULL, so no NULL inits. */
-#else
- {
- duk_small_uint_t i;
- for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) {
- res->strs[i] = NULL;
- }
- }
-#endif
-#endif /* DUK_USE_ROM_STRINGS */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- res->dbg_read_cb = NULL;
- res->dbg_write_cb = NULL;
- res->dbg_peek_cb = NULL;
- res->dbg_read_flush_cb = NULL;
- res->dbg_write_flush_cb = NULL;
- res->dbg_request_cb = NULL;
- res->dbg_udata = NULL;
- res->dbg_step_thread = NULL;
-#endif
-#endif /* DUK_USE_EXPLICIT_NULL_INIT */
-
- res->alloc_func = alloc_func;
- res->realloc_func = realloc_func;
- res->free_func = free_func;
- res->heap_udata = heap_udata;
- res->fatal_func = fatal_func;
-
-#if defined(DUK_USE_HEAPPTR16)
- /* XXX: zero assumption */
- res->heapptr_null16 = DUK_USE_HEAPPTR_ENC16(res->heap_udata, (void *) NULL);
- res->heapptr_deleted16 = DUK_USE_HEAPPTR_ENC16(res->heap_udata, (void *) DUK_STRTAB_DELETED_MARKER(res));
-#endif
-
- /* res->mark_and_sweep_trigger_counter == 0 -> now causes immediate GC; which is OK */
-
- res->call_recursion_depth = 0;
- res->call_recursion_limit = DUK_USE_NATIVE_CALL_RECLIMIT;
-
- /* XXX: use the pointer as a seed for now: mix in time at least */
-
- /* The casts through duk_intr_pt is to avoid the following GCC warning:
- *
- * warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
- *
- * This still generates a /Wp64 warning on VS2010 when compiling for x86.
- */
-#if defined(DUK_USE_ROM_STRINGS)
- /* XXX: make a common DUK_USE_ option, and allow custom fixed seed? */
- DUK_D(DUK_DPRINT("using rom strings, force heap hash_seed to fixed value 0x%08lx", (long) DUK__FIXED_HASH_SEED));
- res->hash_seed = (duk_uint32_t) DUK__FIXED_HASH_SEED;
-#else /* DUK_USE_ROM_STRINGS */
- res->hash_seed = (duk_uint32_t) (duk_intptr_t) res;
- res->rnd_state = (duk_uint32_t) (duk_intptr_t) res;
-#if !defined(DUK_USE_STRHASH_DENSE)
- res->hash_seed ^= 5381; /* Bernstein hash init value is normally 5381; XOR it in in case pointer low bits are 0 */
-#endif
-#endif /* DUK_USE_ROM_STRINGS */
-
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
- res->lj.jmpbuf_ptr = NULL;
-#endif
- DUK_ASSERT(res->lj.type == DUK_LJ_TYPE_UNKNOWN); /* zero */
-
- DUK_TVAL_SET_UNDEFINED(&res->lj.value1);
- DUK_TVAL_SET_UNDEFINED(&res->lj.value2);
-
-#if (DUK_STRTAB_INITIAL_SIZE < DUK_UTIL_MIN_HASH_PRIME)
-#error initial heap stringtable size is defined incorrectly
-#endif
-
- /*
- * Init stringtable: fixed variant
- */
-
-#if defined(DUK_USE_STRTAB_CHAIN)
- DUK_MEMZERO(res->strtable, sizeof(duk_strtab_entry) * DUK_STRTAB_CHAIN_SIZE);
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
- {
- duk_small_uint_t i;
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- res->strtable[i].u.str16 = res->heapptr_null16;
-#else
- res->strtable[i].u.str = NULL;
-#endif
- }
- }
-#endif /* DUK_USE_EXPLICIT_NULL_INIT */
-#endif /* DUK_USE_STRTAB_CHAIN */
-
- /*
- * Init stringtable: probe variant
- */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-#if defined(DUK_USE_HEAPPTR16)
- res->strtable16 = (duk_uint16_t *) alloc_func(heap_udata, sizeof(duk_uint16_t) * DUK_STRTAB_INITIAL_SIZE);
- if (!res->strtable16) {
- goto error;
- }
-#else /* DUK_USE_HEAPPTR16 */
- res->strtable = (duk_hstring **) alloc_func(heap_udata, sizeof(duk_hstring *) * DUK_STRTAB_INITIAL_SIZE);
- if (!res->strtable) {
- goto error;
- }
-#endif /* DUK_USE_HEAPPTR16 */
- res->st_size = DUK_STRTAB_INITIAL_SIZE;
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
- {
- duk_small_uint_t i;
- DUK_ASSERT(res->st_size == DUK_STRTAB_INITIAL_SIZE);
- for (i = 0; i < DUK_STRTAB_INITIAL_SIZE; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- res->strtable16[i] = res->heapptr_null16;
-#else
- res->strtable[i] = NULL;
-#endif
- }
- }
-#else /* DUK_USE_EXPLICIT_NULL_INIT */
-#if defined(DUK_USE_HEAPPTR16)
- DUK_MEMZERO(res->strtable16, sizeof(duk_uint16_t) * DUK_STRTAB_INITIAL_SIZE);
-#else
- DUK_MEMZERO(res->strtable, sizeof(duk_hstring *) * DUK_STRTAB_INITIAL_SIZE);
-#endif
-#endif /* DUK_USE_EXPLICIT_NULL_INIT */
-#endif /* DUK_USE_STRTAB_PROBE */
-
- /*
- * Init stringcache
- */
-
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
- {
- duk_small_uint_t i;
- for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) {
- res->strcache[i].h = NULL;
- }
- }
-#endif
-
- /* XXX: error handling is incomplete. It would be cleanest if
- * there was a setjmp catchpoint, so that all init code could
- * freely throw errors. If that were the case, the return code
- * passing here could be removed.
- */
-
- /*
- * Init built-in strings
- */
-
- DUK_DD(DUK_DDPRINT("HEAP: INIT STRINGS"));
- if (!duk__init_heap_strings(res)) {
- goto error;
- }
-
- /*
- * Init the heap thread
- */
-
- DUK_DD(DUK_DDPRINT("HEAP: INIT HEAP THREAD"));
- if (!duk__init_heap_thread(res)) {
- goto error;
- }
-
- /*
- * Init the heap object
- */
-
- DUK_DD(DUK_DDPRINT("HEAP: INIT HEAP OBJECT"));
- DUK_ASSERT(res->heap_thread != NULL);
- res->heap_object = duk_hobject_alloc(res, DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT));
- if (!res->heap_object) {
- goto error;
- }
- DUK_HOBJECT_INCREF(res->heap_thread, res->heap_object);
-
- /*
- * All done
- */
-
- DUK_D(DUK_DPRINT("allocated heap: %p", (void *) res));
- return res;
-
- error:
- DUK_D(DUK_DPRINT("heap allocation failed"));
-
- if (res) {
- /* assumes that allocated pointers and alloc funcs are valid
- * if res exists
- */
- DUK_ASSERT(res->alloc_func != NULL);
- DUK_ASSERT(res->realloc_func != NULL);
- DUK_ASSERT(res->free_func != NULL);
- duk_heap_free(res);
- }
- return NULL;
-}
-
-#undef DUK__BITPACK_LETTER_LIMIT
-#undef DUK__BITPACK_UNDERSCORE
-#undef DUK__BITPACK_FF
-#undef DUK__BITPACK_SWITCH1
-#undef DUK__BITPACK_SWITCH
-#undef DUK__BITPACK_SEVENBIT
-#undef DUK__FIXED_HASH_SEED
-#line 1 "duk_heap_hashstring.c"
-/*
- * String hash computation (interning).
- *
- * String hashing is performance critical because a string hash is computed
- * for all new strings which are candidates to be added to the string table.
- * However, strings actually added to the string table go through a codepoint
- * length calculation which dominates performance because it goes through
- * every byte of the input string (but only for strings added).
- *
- * The string hash algorithm should be fast, but on the other hand provide
- * good enough hashes to ensure both string table and object property table
- * hash tables work reasonably well (i.e., there aren't too many collisions
- * with real world inputs). Unless the hash is cryptographic, it's always
- * possible to craft inputs with maximal hash collisions.
- *
- * NOTE: The hash algorithms must match src/dukutil.py:duk_heap_hashstring()
- * for ROM string support!
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_STRHASH_DENSE)
-/* Constants for duk_hashstring(). */
-#define DUK__STRHASH_SHORTSTRING 4096L
-#define DUK__STRHASH_MEDIUMSTRING (256L * 1024L)
-#define DUK__STRHASH_BLOCKSIZE 256L
-
-DUK_INTERNAL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len) {
- duk_uint32_t hash;
-
- /* Use Murmurhash2 directly for short strings, and use "block skipping"
- * for long strings: hash an initial part and then sample the rest of
- * the string with reasonably sized chunks. An initial offset for the
- * sampling is computed based on a hash of the initial part of the string;
- * this is done to (usually) avoid the case where all long strings have
- * certain offset ranges which are never sampled.
- *
- * Skip should depend on length and bound the total time to roughly
- * logarithmic. With current values:
- *
- * 1M string => 256 * 241 = 61696 bytes (0.06M) of hashing
- * 1G string => 256 * 16321 = 4178176 bytes (3.98M) of hashing
- *
- * XXX: It would be better to compute the skip offset more "smoothly"
- * instead of having a few boundary values.
- */
-
- /* note: mixing len into seed improves hashing when skipping */
- duk_uint32_t str_seed = heap->hash_seed ^ ((duk_uint32_t) len);
-
- if (len <= DUK__STRHASH_SHORTSTRING) {
- hash = duk_util_hashbytes(str, len, str_seed);
- } else {
- duk_size_t off;
- duk_size_t skip;
-
- if (len <= DUK__STRHASH_MEDIUMSTRING) {
- skip = (duk_size_t) (16 * DUK__STRHASH_BLOCKSIZE + DUK__STRHASH_BLOCKSIZE);
- } else {
- skip = (duk_size_t) (256 * DUK__STRHASH_BLOCKSIZE + DUK__STRHASH_BLOCKSIZE);
- }
-
- hash = duk_util_hashbytes(str, (duk_size_t) DUK__STRHASH_SHORTSTRING, str_seed);
- off = DUK__STRHASH_SHORTSTRING + (skip * (hash % 256)) / 256;
-
- /* XXX: inefficient loop */
- while (off < len) {
- duk_size_t left = len - off;
- duk_size_t now = (duk_size_t) (left > DUK__STRHASH_BLOCKSIZE ? DUK__STRHASH_BLOCKSIZE : left);
- hash ^= duk_util_hashbytes(str + off, now, str_seed);
- off += skip;
- }
- }
-
-#if defined(DUK_USE_STRHASH16)
- /* Truncate to 16 bits here, so that a computed hash can be compared
- * against a hash stored in a 16-bit field.
- */
- hash &= 0x0000ffffUL;
-#endif
- return hash;
-}
-
-#undef DUK__STRHASH_SHORTSTRING
-#undef DUK__STRHASH_MEDIUMSTRING
-#undef DUK__STRHASH_BLOCKSIZE
-#else /* DUK_USE_STRHASH_DENSE */
-DUK_INTERNAL duk_uint32_t duk_heap_hashstring(duk_heap *heap, const duk_uint8_t *str, duk_size_t len) {
- duk_uint32_t hash;
- duk_size_t step;
- duk_size_t off;
-
- /* Slightly modified "Bernstein hash" from:
- *
- * http://eternallyconfuzzled.com/tuts/algorithms/jsw_tut_hashing.aspx
- *
- * Modifications: string skipping and reverse direction similar to
- * Lua 5.1.5, and different hash initializer.
- *
- * The reverse direction ensures last byte it always included in the
- * hash which is a good default as changing parts of the string are
- * more often in the suffix than in the prefix.
- */
-
- hash = heap->hash_seed ^ ((duk_uint32_t) len); /* Bernstein hash init value is normally 5381 */
- step = (len >> DUK_USE_STRHASH_SKIP_SHIFT) + 1;
- for (off = len; off >= step; off -= step) {
- DUK_ASSERT(off >= 1); /* off >= step, and step >= 1 */
- hash = (hash * 33) + str[off - 1];
- }
-
-#if defined(DUK_USE_STRHASH16)
- /* Truncate to 16 bits here, so that a computed hash can be compared
- * against a hash stored in a 16-bit field.
- */
- hash &= 0x0000ffffUL;
-#endif
- return hash;
-}
-#endif /* DUK_USE_STRHASH_DENSE */
-#line 1 "duk_heap_markandsweep.c"
-/*
- * Mark-and-sweep garbage collection.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-
-DUK_LOCAL_DECL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h);
-DUK_LOCAL_DECL void duk__mark_tval(duk_heap *heap, duk_tval *tv);
-
-/*
- * Misc
- */
-
-/* Select a thread for mark-and-sweep use.
- *
- * XXX: This needs to change later.
- */
-DUK_LOCAL duk_hthread *duk__get_temp_hthread(duk_heap *heap) {
- if (heap->curr_thread) {
- return heap->curr_thread;
- }
- return heap->heap_thread; /* may be NULL, too */
-}
-
-/*
- * Marking functions for heap types: mark children recursively
- */
-
-DUK_LOCAL void duk__mark_hstring(duk_heap *heap, duk_hstring *h) {
- DUK_UNREF(heap);
- DUK_UNREF(h);
-
- DUK_DDD(DUK_DDDPRINT("duk__mark_hstring: %p", (void *) h));
- DUK_ASSERT(h);
-
- /* nothing to process */
-}
-
-DUK_LOCAL void duk__mark_hobject(duk_heap *heap, duk_hobject *h) {
- duk_uint_fast32_t i;
-
- DUK_DDD(DUK_DDDPRINT("duk__mark_hobject: %p", (void *) h));
-
- DUK_ASSERT(h);
-
- /* XXX: use advancing pointers instead of index macros -> faster and smaller? */
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
- duk_hstring *key = DUK_HOBJECT_E_GET_KEY(heap, h, i);
- if (!key) {
- continue;
- }
- duk__mark_heaphdr(heap, (duk_heaphdr *) key);
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, h, i)) {
- duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.get);
- duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->a.set);
- } else {
- duk__mark_tval(heap, &DUK_HOBJECT_E_GET_VALUE_PTR(heap, h, i)->v);
- }
- }
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
- duk__mark_tval(heap, DUK_HOBJECT_A_GET_VALUE_PTR(heap, h, i));
- }
-
- /* hash part is a 'weak reference' and does not contribute */
-
- duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(heap, h));
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
- duk_tval *tv, *tv_end;
- duk_hobject **fn, **fn_end;
-
- /* 'data' is reachable through every compiled function which
- * contains a reference.
- */
-
- duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_HCOMPILEDFUNCTION_GET_DATA(heap, f));
-
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(heap, f);
- tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(heap, f);
- while (tv < tv_end) {
- duk__mark_tval(heap, tv);
- tv++;
- }
-
- fn = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(heap, f);
- fn_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(heap, f);
- while (fn < fn_end) {
- duk__mark_heaphdr(heap, (duk_heaphdr *) *fn);
- fn++;
- }
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- duk_hnativefunction *f = (duk_hnativefunction *) h;
- DUK_UNREF(f);
- /* nothing to mark */
- } else if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- duk_hbufferobject *b = (duk_hbufferobject *) h;
- duk__mark_heaphdr(heap, (duk_heaphdr *) b->buf);
- } else if (DUK_HOBJECT_IS_THREAD(h)) {
- duk_hthread *t = (duk_hthread *) h;
- duk_tval *tv;
-
- tv = t->valstack;
- while (tv < t->valstack_top) {
- duk__mark_tval(heap, tv);
- tv++;
- }
-
- for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
- duk_activation *act = t->callstack + i;
- duk__mark_heaphdr(heap, (duk_heaphdr *) DUK_ACT_GET_FUNC(act));
- duk__mark_heaphdr(heap, (duk_heaphdr *) act->var_env);
- duk__mark_heaphdr(heap, (duk_heaphdr *) act->lex_env);
-#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- duk__mark_heaphdr(heap, (duk_heaphdr *) act->prev_caller);
-#endif
- }
-
-#if 0 /* nothing now */
- for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
- duk_catcher *cat = t->catchstack + i;
- }
-#endif
-
- duk__mark_heaphdr(heap, (duk_heaphdr *) t->resumer);
-
- /* XXX: duk_small_uint_t would be enough for this loop */
- for (i = 0; i < DUK_NUM_BUILTINS; i++) {
- duk__mark_heaphdr(heap, (duk_heaphdr *) t->builtins[i]);
- }
- }
-}
-
-/* recursion tracking happens here only */
-DUK_LOCAL void duk__mark_heaphdr(duk_heap *heap, duk_heaphdr *h) {
- DUK_DDD(DUK_DDDPRINT("duk__mark_heaphdr %p, type %ld",
- (void *) h,
- (h != NULL ? (long) DUK_HEAPHDR_GET_TYPE(h) : (long) -1)));
- if (!h) {
- return;
- }
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY(h)) {
- DUK_DDD(DUK_DDDPRINT("readonly object %p, skip", (void *) h));
- return;
- }
-#endif
- if (DUK_HEAPHDR_HAS_REACHABLE(h)) {
- DUK_DDD(DUK_DDDPRINT("already marked reachable, skip"));
- return;
- }
- DUK_HEAPHDR_SET_REACHABLE(h);
-
- if (heap->mark_and_sweep_recursion_depth >= DUK_USE_MARK_AND_SWEEP_RECLIMIT) {
- /* log this with a normal debug level because this should be relatively rare */
- DUK_D(DUK_DPRINT("mark-and-sweep recursion limit reached, marking as temproot: %p", (void *) h));
- DUK_HEAP_SET_MARKANDSWEEP_RECLIMIT_REACHED(heap);
- DUK_HEAPHDR_SET_TEMPROOT(h);
- return;
- }
-
- heap->mark_and_sweep_recursion_depth++;
-
- switch ((int) DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING:
- duk__mark_hstring(heap, (duk_hstring *) h);
- break;
- case DUK_HTYPE_OBJECT:
- duk__mark_hobject(heap, (duk_hobject *) h);
- break;
- case DUK_HTYPE_BUFFER:
- /* nothing to mark */
- break;
- default:
- DUK_D(DUK_DPRINT("attempt to mark heaphdr %p with invalid htype %ld", (void *) h, (long) DUK_HEAPHDR_GET_TYPE(h)));
- DUK_UNREACHABLE();
- }
-
- heap->mark_and_sweep_recursion_depth--;
-}
-
-DUK_LOCAL void duk__mark_tval(duk_heap *heap, duk_tval *tv) {
- DUK_DDD(DUK_DDDPRINT("duk__mark_tval %p", (void *) tv));
- if (!tv) {
- return;
- }
- if (DUK_TVAL_IS_HEAP_ALLOCATED(tv)) {
- duk__mark_heaphdr(heap, DUK_TVAL_GET_HEAPHDR(tv));
- }
-}
-
-/*
- * Mark the heap.
- */
-
-DUK_LOCAL void duk__mark_roots_heap(duk_heap *heap) {
- duk_small_uint_t i;
-
- DUK_DD(DUK_DDPRINT("duk__mark_roots_heap: %p", (void *) heap));
-
- duk__mark_heaphdr(heap, (duk_heaphdr *) heap->heap_thread);
- duk__mark_heaphdr(heap, (duk_heaphdr *) heap->heap_object);
-
- for (i = 0; i < DUK_HEAP_NUM_STRINGS; i++) {
- duk_hstring *h = DUK_HEAP_GET_STRING(heap, i);
- duk__mark_heaphdr(heap, (duk_heaphdr *) h);
- }
-
- duk__mark_tval(heap, &heap->lj.value1);
- duk__mark_tval(heap, &heap->lj.value2);
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- for (i = 0; i < heap->dbg_breakpoint_count; i++) {
- duk__mark_heaphdr(heap, (duk_heaphdr *) heap->dbg_breakpoints[i].filename);
- }
-#endif
-}
-
-/*
- * Mark refzero_list objects.
- *
- * Objects on the refzero_list have no inbound references. They might have
- * outbound references to objects that we might free, which would invalidate
- * any references held by the refzero objects. A refzero object might also
- * be rescued by refcount finalization. Refzero objects are treated as
- * reachability roots to ensure they (or anything they point to) are not
- * freed in mark-and-sweep.
- */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-DUK_LOCAL void duk__mark_refzero_list(duk_heap *heap) {
- duk_heaphdr *hdr;
-
- DUK_DD(DUK_DDPRINT("duk__mark_refzero_list: %p", (void *) heap));
-
- hdr = heap->refzero_list;
- while (hdr) {
- duk__mark_heaphdr(heap, hdr);
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-#endif
-
-/*
- * Mark unreachable, finalizable objects.
- *
- * Such objects will be moved aside and their finalizers run later. They have
- * to be treated as reachability roots for their properties etc to remain
- * allocated. This marking is only done for unreachable values which would
- * be swept later (refzero_list is thus excluded).
- *
- * Objects are first marked FINALIZABLE and only then marked as reachability
- * roots; otherwise circular references might be handled inconsistently.
- */
-
-DUK_LOCAL void duk__mark_finalizable(duk_heap *heap) {
- duk_hthread *thr;
- duk_heaphdr *hdr;
- duk_size_t count_finalizable = 0;
-
- DUK_DD(DUK_DDPRINT("duk__mark_finalizable: %p", (void *) heap));
-
- thr = duk__get_temp_hthread(heap);
- DUK_ASSERT(thr != NULL);
-
- hdr = heap->heap_allocated;
- while (hdr) {
- /* A finalizer is looked up from the object and up its prototype chain
- * (which allows inherited finalizers). A prototype loop must not cause
- * an error to be thrown here; duk_hobject_hasprop_raw() will ignore a
- * prototype loop silently and indicate that the property doesn't exist.
- */
-
- if (!DUK_HEAPHDR_HAS_REACHABLE(hdr) &&
- DUK_HEAPHDR_GET_TYPE(hdr) == DUK_HTYPE_OBJECT &&
- !DUK_HEAPHDR_HAS_FINALIZED(hdr) &&
- duk_hobject_hasprop_raw(thr, (duk_hobject *) hdr, DUK_HTHREAD_STRING_INT_FINALIZER(thr))) {
-
- /* heaphdr:
- * - is not reachable
- * - is an object
- * - is not a finalized object
- * - has a finalizer
- */
-
- DUK_DD(DUK_DDPRINT("unreachable heap object will be "
- "finalized -> mark as finalizable "
- "and treat as a reachability root: %p",
- (void *) hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(hdr));
- DUK_HEAPHDR_SET_FINALIZABLE(hdr);
- count_finalizable ++;
- }
-
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-
- if (count_finalizable == 0) {
- return;
- }
-
- DUK_DD(DUK_DDPRINT("marked %ld heap objects as finalizable, now mark them reachable",
- (long) count_finalizable));
-
- hdr = heap->heap_allocated;
- while (hdr) {
- if (DUK_HEAPHDR_HAS_FINALIZABLE(hdr)) {
- duk__mark_heaphdr(heap, hdr);
- }
-
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-
- /* Caller will finish the marking process if we hit a recursion limit. */
-}
-
-/*
- * Mark objects on finalize_list.
- *
- */
-
-DUK_LOCAL void duk__mark_finalize_list(duk_heap *heap) {
- duk_heaphdr *hdr;
-#ifdef DUK_USE_DEBUG
- duk_size_t count_finalize_list = 0;
-#endif
-
- DUK_DD(DUK_DDPRINT("duk__mark_finalize_list: %p", (void *) heap));
-
- hdr = heap->finalize_list;
- while (hdr) {
- duk__mark_heaphdr(heap, hdr);
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
-#ifdef DUK_USE_DEBUG
- count_finalize_list++;
-#endif
- }
-
-#ifdef DUK_USE_DEBUG
- if (count_finalize_list > 0) {
- DUK_D(DUK_DPRINT("marked %ld objects on the finalize_list as reachable (previous finalizer run skipped)",
- (long) count_finalize_list));
- }
-#endif
-}
-
-/*
- * Fallback marking handler if recursion limit is reached.
- *
- * Iterates 'temproots' until recursion limit is no longer hit. Note
- * that temproots may reside either in heap allocated list or the
- * refzero work list. This is a slow scan, but guarantees that we
- * finish with a bounded C stack.
- *
- * Note that nodes may have been marked as temproots before this
- * scan begun, OR they may have been marked during the scan (as
- * we process nodes recursively also during the scan). This is
- * intended behavior.
- */
-
-#ifdef DUK_USE_DEBUG
-DUK_LOCAL void duk__handle_temproot(duk_heap *heap, duk_heaphdr *hdr, duk_size_t *count) {
-#else
-DUK_LOCAL void duk__handle_temproot(duk_heap *heap, duk_heaphdr *hdr) {
-#endif
- if (!DUK_HEAPHDR_HAS_TEMPROOT(hdr)) {
- DUK_DDD(DUK_DDDPRINT("not a temp root: %p", (void *) hdr));
- return;
- }
-
- DUK_DDD(DUK_DDDPRINT("found a temp root: %p", (void *) hdr));
- DUK_HEAPHDR_CLEAR_TEMPROOT(hdr);
- DUK_HEAPHDR_CLEAR_REACHABLE(hdr); /* done so that duk__mark_heaphdr() works correctly */
- duk__mark_heaphdr(heap, hdr);
-
-#ifdef DUK_USE_DEBUG
- (*count)++;
-#endif
-}
-
-DUK_LOCAL void duk__mark_temproots_by_heap_scan(duk_heap *heap) {
- duk_heaphdr *hdr;
-#ifdef DUK_USE_DEBUG
- duk_size_t count;
-#endif
-
- DUK_DD(DUK_DDPRINT("duk__mark_temproots_by_heap_scan: %p", (void *) heap));
-
- while (DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap)) {
- DUK_DD(DUK_DDPRINT("recursion limit reached, doing heap scan to continue from temproots"));
-
-#ifdef DUK_USE_DEBUG
- count = 0;
-#endif
- DUK_HEAP_CLEAR_MARKANDSWEEP_RECLIMIT_REACHED(heap);
-
- hdr = heap->heap_allocated;
- while (hdr) {
-#ifdef DUK_USE_DEBUG
- duk__handle_temproot(heap, hdr, &count);
-#else
- duk__handle_temproot(heap, hdr);
-#endif
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-
- /* must also check refzero_list */
-#ifdef DUK_USE_REFERENCE_COUNTING
- hdr = heap->refzero_list;
- while (hdr) {
-#ifdef DUK_USE_DEBUG
- duk__handle_temproot(heap, hdr, &count);
-#else
- duk__handle_temproot(heap, hdr);
-#endif
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-#endif /* DUK_USE_REFERENCE_COUNTING */
-
-#ifdef DUK_USE_DEBUG
- DUK_DD(DUK_DDPRINT("temproot mark heap scan processed %ld temp roots", (long) count));
-#endif
- }
-}
-
-/*
- * Finalize refcounts for heap elements just about to be freed.
- * This must be done for all objects before freeing to avoid any
- * stale pointer dereferences.
- *
- * Note that this must deduce the set of objects to be freed
- * identically to duk__sweep_heap().
- */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-DUK_LOCAL void duk__finalize_refcounts(duk_heap *heap) {
- duk_hthread *thr;
- duk_heaphdr *hdr;
-
- thr = duk__get_temp_hthread(heap);
- DUK_ASSERT(thr != NULL);
-
- DUK_DD(DUK_DDPRINT("duk__finalize_refcounts: heap=%p, hthread=%p",
- (void *) heap, (void *) thr));
-
- hdr = heap->heap_allocated;
- while (hdr) {
- if (!DUK_HEAPHDR_HAS_REACHABLE(hdr)) {
- /*
- * Unreachable object about to be swept. Finalize target refcounts
- * (objects which the unreachable object points to) without doing
- * refzero processing. Recursive decrefs are also prevented when
- * refzero processing is disabled.
- *
- * Value cannot be a finalizable object, as they have been made
- * temporarily reachable for this round.
- */
-
- DUK_DDD(DUK_DDDPRINT("unreachable object, refcount finalize before sweeping: %p", (void *) hdr));
- duk_heaphdr_refcount_finalize(thr, hdr);
- }
-
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-#endif /* DUK_USE_REFERENCE_COUNTING */
-
-/*
- * Clear (reachable) flags of refzero work list.
- */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-DUK_LOCAL void duk__clear_refzero_list_flags(duk_heap *heap) {
- duk_heaphdr *hdr;
-
- DUK_DD(DUK_DDPRINT("duk__clear_refzero_list_flags: %p", (void *) heap));
-
- hdr = heap->refzero_list;
- while (hdr) {
- DUK_HEAPHDR_CLEAR_REACHABLE(hdr);
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(hdr));
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-#endif /* DUK_USE_REFERENCE_COUNTING */
-
-/*
- * Clear (reachable) flags of finalize_list
- *
- * We could mostly do in the sweep phase when we move objects from the
- * heap into the finalize_list. However, if a finalizer run is skipped
- * during a mark-and-sweep, the objects on the finalize_list will be marked
- * reachable during the next mark-and-sweep. Since they're already on the
- * finalize_list, no-one will be clearing their REACHABLE flag so we do it
- * here. (This now overlaps with the sweep handling in a harmless way.)
- */
-
-DUK_LOCAL void duk__clear_finalize_list_flags(duk_heap *heap) {
- duk_heaphdr *hdr;
-
- DUK_DD(DUK_DDPRINT("duk__clear_finalize_list_flags: %p", (void *) heap));
-
- hdr = heap->finalize_list;
- while (hdr) {
- DUK_HEAPHDR_CLEAR_REACHABLE(hdr);
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(hdr));
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-
-/*
- * Sweep stringtable
- */
-
-#if defined(DUK_USE_STRTAB_CHAIN)
-
-/* XXX: skip count_free w/o debug? */
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL void duk__sweep_string_chain16(duk_heap *heap, duk_uint16_t *slot, duk_size_t *count_keep, duk_size_t *count_free) {
- duk_uint16_t h16 = *slot;
- duk_hstring *h;
- duk_uint16_t null16 = heap->heapptr_null16;
-
- if (h16 == null16) {
- /* nop */
- return;
- }
- h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, h16);
- DUK_ASSERT(h != NULL);
-
- if (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h)) {
- DUK_HEAPHDR_CLEAR_REACHABLE((duk_heaphdr *) h);
- (*count_keep)++;
- } else {
-#if defined(DUK_USE_REFERENCE_COUNTING)
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) == 0);
-#endif
- /* deal with weak references first */
- duk_heap_strcache_string_remove(heap, (duk_hstring *) h);
- *slot = null16;
-
- /* free inner references (these exist e.g. when external
- * strings are enabled)
- */
- duk_free_hstring_inner(heap, h);
- DUK_FREE(heap, h);
- (*count_free)++;
- }
-}
-#else /* DUK_USE_HEAPPTR16 */
-DUK_LOCAL void duk__sweep_string_chain(duk_heap *heap, duk_hstring **slot, duk_size_t *count_keep, duk_size_t *count_free) {
- duk_hstring *h = *slot;
-
- if (h == NULL) {
- /* nop */
- return;
- }
-
- if (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h)) {
- DUK_HEAPHDR_CLEAR_REACHABLE((duk_heaphdr *) h);
- (*count_keep)++;
- } else {
-#if defined(DUK_USE_REFERENCE_COUNTING)
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) == 0);
-#endif
- /* deal with weak references first */
- duk_heap_strcache_string_remove(heap, (duk_hstring *) h);
- *slot = NULL;
-
- /* free inner references (these exist e.g. when external
- * strings are enabled)
- */
- duk_free_hstring_inner(heap, h);
- DUK_FREE(heap, h);
- (*count_free)++;
- }
-}
-#endif /* DUK_USE_HEAPPTR16 */
-
-DUK_LOCAL void duk__sweep_stringtable_chain(duk_heap *heap, duk_size_t *out_count_keep) {
- duk_strtab_entry *e;
- duk_uint_fast32_t i;
- duk_size_t count_free = 0;
- duk_size_t count_keep = 0;
- duk_size_t j, n;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *lst;
-#else
- duk_hstring **lst;
-#endif
-
- DUK_DD(DUK_DDPRINT("duk__sweep_stringtable: %p", (void *) heap));
-
- /* Non-zero refcounts should not happen for unreachable strings,
- * because we refcount finalize all unreachable objects which
- * should have decreased unreachable string refcounts to zero
- * (even for cycles).
- */
-
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
- e = heap->strtable + i;
- if (e->listlen == 0) {
-#if defined(DUK_USE_HEAPPTR16)
- duk__sweep_string_chain16(heap, &e->u.str16, &count_keep, &count_free);
-#else
- duk__sweep_string_chain(heap, &e->u.str, &count_keep, &count_free);
-#endif
- } else {
-#if defined(DUK_USE_HEAPPTR16)
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
-#else
- lst = e->u.strlist;
-#endif
- for (j = 0, n = e->listlen; j < n; j++) {
-#if defined(DUK_USE_HEAPPTR16)
- duk__sweep_string_chain16(heap, lst + j, &count_keep, &count_free);
-#else
- duk__sweep_string_chain(heap, lst + j, &count_keep, &count_free);
-#endif
- }
- }
- }
-
- DUK_D(DUK_DPRINT("mark-and-sweep sweep stringtable: %ld freed, %ld kept",
- (long) count_free, (long) count_keep));
- *out_count_keep = count_keep;
-}
-#endif /* DUK_USE_STRTAB_CHAIN */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-DUK_LOCAL void duk__sweep_stringtable_probe(duk_heap *heap, duk_size_t *out_count_keep) {
- duk_hstring *h;
- duk_uint_fast32_t i;
-#ifdef DUK_USE_DEBUG
- duk_size_t count_free = 0;
-#endif
- duk_size_t count_keep = 0;
-
- DUK_DD(DUK_DDPRINT("duk__sweep_stringtable: %p", (void *) heap));
-
- for (i = 0; i < heap->st_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->strtable16[i]);
-#else
- h = heap->strtable[i];
-#endif
- if (h == NULL || h == DUK_STRTAB_DELETED_MARKER(heap)) {
- continue;
- } else if (DUK_HEAPHDR_HAS_REACHABLE((duk_heaphdr *) h)) {
- DUK_HEAPHDR_CLEAR_REACHABLE((duk_heaphdr *) h);
- count_keep++;
- continue;
- }
-
-#ifdef DUK_USE_DEBUG
- count_free++;
-#endif
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
- /* Non-zero refcounts should not happen for unreachable strings,
- * because we refcount finalize all unreachable objects which
- * should have decreased unreachable string refcounts to zero
- * (even for cycles).
- */
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT((duk_heaphdr *) h) == 0);
-#endif
-
- DUK_DDD(DUK_DDDPRINT("sweep string, not reachable: %p", (void *) h));
-
- /* deal with weak references first */
- duk_heap_strcache_string_remove(heap, (duk_hstring *) h);
-
- /* remove the string (mark DELETED), could also call
- * duk_heap_string_remove() but that would be slow and
- * pointless because we already know the slot.
- */
-#if defined(DUK_USE_HEAPPTR16)
- heap->strtable16[i] = heap->heapptr_deleted16;
-#else
- heap->strtable[i] = DUK_STRTAB_DELETED_MARKER(heap);
-#endif
-
- /* free inner references (these exist e.g. when external
- * strings are enabled)
- */
- duk_free_hstring_inner(heap, (duk_hstring *) h);
-
- /* finally free the struct itself */
- DUK_FREE(heap, h);
- }
-
-#ifdef DUK_USE_DEBUG
- DUK_D(DUK_DPRINT("mark-and-sweep sweep stringtable: %ld freed, %ld kept",
- (long) count_free, (long) count_keep));
-#endif
- *out_count_keep = count_keep;
-}
-#endif /* DUK_USE_STRTAB_PROBE */
-
-/*
- * Sweep heap
- */
-
-DUK_LOCAL void duk__sweep_heap(duk_heap *heap, duk_int_t flags, duk_size_t *out_count_keep) {
- duk_heaphdr *prev; /* last element that was left in the heap */
- duk_heaphdr *curr;
- duk_heaphdr *next;
-#ifdef DUK_USE_DEBUG
- duk_size_t count_free = 0;
- duk_size_t count_finalize = 0;
- duk_size_t count_rescue = 0;
-#endif
- duk_size_t count_keep = 0;
-
- DUK_UNREF(flags);
- DUK_DD(DUK_DDPRINT("duk__sweep_heap: %p", (void *) heap));
-
- prev = NULL;
- curr = heap->heap_allocated;
- heap->heap_allocated = NULL;
- while (curr) {
- /* Strings and ROM objects are never placed on the heap allocated list. */
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) != DUK_HTYPE_STRING);
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(curr));
-
- next = DUK_HEAPHDR_GET_NEXT(heap, curr);
-
- if (DUK_HEAPHDR_HAS_REACHABLE(curr)) {
- /*
- * Reachable object, keep
- */
-
- DUK_DDD(DUK_DDDPRINT("sweep, reachable: %p", (void *) curr));
-
- if (DUK_HEAPHDR_HAS_FINALIZABLE(curr)) {
- /*
- * If object has been marked finalizable, move it to the
- * "to be finalized" work list. It will be collected on
- * the next mark-and-sweep if it is still unreachable
- * after running the finalizer.
- */
-
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr));
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT);
- DUK_DDD(DUK_DDDPRINT("object has finalizer, move to finalization work list: %p", (void *) curr));
-
-#ifdef DUK_USE_DOUBLE_LINKED_HEAP
- if (heap->finalize_list) {
- DUK_HEAPHDR_SET_PREV(heap, heap->finalize_list, curr);
- }
- DUK_HEAPHDR_SET_PREV(heap, curr, NULL);
-#endif
- DUK_HEAPHDR_SET_NEXT(heap, curr, heap->finalize_list);
- DUK_ASSERT_HEAPHDR_LINKS(heap, curr);
- heap->finalize_list = curr;
-#ifdef DUK_USE_DEBUG
- count_finalize++;
-#endif
- } else {
- /*
- * Object will be kept; queue object back to heap_allocated (to tail)
- */
-
- if (DUK_HEAPHDR_HAS_FINALIZED(curr)) {
- /*
- * Object's finalizer was executed on last round, and
- * object has been happily rescued.
- */
-
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr));
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT);
- DUK_DD(DUK_DDPRINT("object rescued during mark-and-sweep finalization: %p", (void *) curr));
-#ifdef DUK_USE_DEBUG
- count_rescue++;
-#endif
- } else {
- /*
- * Plain, boring reachable object.
- */
- DUK_DD(DUK_DDPRINT("keep object: %!iO", curr));
- count_keep++;
- }
-
- if (!heap->heap_allocated) {
- heap->heap_allocated = curr;
- }
- if (prev) {
- DUK_HEAPHDR_SET_NEXT(heap, prev, curr);
- }
-#ifdef DUK_USE_DOUBLE_LINKED_HEAP
- DUK_HEAPHDR_SET_PREV(heap, curr, prev);
-#endif
- DUK_ASSERT_HEAPHDR_LINKS(heap, prev);
- DUK_ASSERT_HEAPHDR_LINKS(heap, curr);
- prev = curr;
- }
-
- DUK_HEAPHDR_CLEAR_REACHABLE(curr);
- DUK_HEAPHDR_CLEAR_FINALIZED(curr);
- DUK_HEAPHDR_CLEAR_FINALIZABLE(curr);
-
- DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(curr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr));
-
- curr = next;
- } else {
- /*
- * Unreachable object, free
- */
-
- DUK_DDD(DUK_DDDPRINT("sweep, not reachable: %p", (void *) curr));
-
-#if defined(DUK_USE_REFERENCE_COUNTING)
- /* Non-zero refcounts should not happen because we refcount
- * finalize all unreachable objects which should cancel out
- * refcounts (even for cycles).
- */
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(curr) == 0);
-#endif
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr));
-
- if (DUK_HEAPHDR_HAS_FINALIZED(curr)) {
- DUK_DDD(DUK_DDDPRINT("finalized object not rescued: %p", (void *) curr));
- }
-
- /* Note: object cannot be a finalizable unreachable object, as
- * they have been marked temporarily reachable for this round,
- * and are handled above.
- */
-
-#ifdef DUK_USE_DEBUG
- count_free++;
-#endif
-
- /* weak refs should be handled here, but no weak refs for
- * any non-string objects exist right now.
- */
-
- /* free object and all auxiliary (non-heap) allocs */
- duk_heap_free_heaphdr_raw(heap, curr);
-
- curr = next;
- }
- }
- if (prev) {
- DUK_HEAPHDR_SET_NEXT(heap, prev, NULL);
- }
- DUK_ASSERT_HEAPHDR_LINKS(heap, prev);
-
-#ifdef DUK_USE_DEBUG
- DUK_D(DUK_DPRINT("mark-and-sweep sweep objects (non-string): %ld freed, %ld kept, %ld rescued, %ld queued for finalization",
- (long) count_free, (long) count_keep, (long) count_rescue, (long) count_finalize));
-#endif
- *out_count_keep = count_keep;
-}
-
-/*
- * Run (object) finalizers in the "to be finalized" work list.
- */
-
-DUK_LOCAL void duk__run_object_finalizers(duk_heap *heap, duk_small_uint_t flags) {
- duk_heaphdr *curr;
- duk_heaphdr *next;
-#ifdef DUK_USE_DEBUG
- duk_size_t count = 0;
-#endif
- duk_hthread *thr;
-
- DUK_DD(DUK_DDPRINT("duk__run_object_finalizers: %p", (void *) heap));
-
- thr = duk__get_temp_hthread(heap);
- DUK_ASSERT(thr != NULL);
-
- curr = heap->finalize_list;
- while (curr) {
- DUK_DDD(DUK_DDDPRINT("mark-and-sweep finalize: %p", (void *) curr));
-
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(curr) == DUK_HTYPE_OBJECT); /* only objects have finalizers */
- DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(curr)); /* flags have been already cleared */
- DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(curr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(curr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY(curr)); /* No finalizers for ROM objects */
-
- if (DUK_LIKELY((flags & DUK_MS_FLAG_SKIP_FINALIZERS) == 0)) {
- /* Run the finalizer, duk_hobject_run_finalizer() sets FINALIZED.
- * Next mark-and-sweep will collect the object unless it has
- * become reachable (i.e. rescued). FINALIZED prevents the
- * finalizer from being executed again before that.
- */
- duk_hobject_run_finalizer(thr, (duk_hobject *) curr); /* must never longjmp */
- DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZED(curr));
- } else {
- /* Used during heap destruction: don't actually run finalizers
- * because we're heading into forced finalization. Instead,
- * queue finalizable objects back to the heap_allocated list.
- */
- DUK_D(DUK_DPRINT("skip finalizers flag set, queue object to heap_allocated without finalizing"));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(curr));
- }
-
- /* queue back to heap_allocated */
- next = DUK_HEAPHDR_GET_NEXT(heap, curr);
- DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, curr);
-
- curr = next;
-#ifdef DUK_USE_DEBUG
- count++;
-#endif
- }
-
- /* finalize_list will always be processed completely */
- heap->finalize_list = NULL;
-
-#ifdef DUK_USE_DEBUG
- DUK_D(DUK_DPRINT("mark-and-sweep finalize objects: %ld finalizers called", (long) count));
-#endif
-}
-
-/*
- * Object compaction.
- *
- * Compaction is assumed to never throw an error.
- */
-
-DUK_LOCAL int duk__protected_compact_object(duk_context *ctx) {
- /* XXX: for threads, compact value stack, call stack, catch stack? */
-
- duk_hobject *obj = duk_get_hobject(ctx, -1);
- DUK_ASSERT(obj != NULL);
- duk_hobject_compact_props((duk_hthread *) ctx, obj);
- return 0;
-}
-
-#ifdef DUK_USE_DEBUG
-DUK_LOCAL void duk__compact_object_list(duk_heap *heap, duk_hthread *thr, duk_heaphdr *start, duk_size_t *p_count_check, duk_size_t *p_count_compact, duk_size_t *p_count_bytes_saved) {
-#else
-DUK_LOCAL void duk__compact_object_list(duk_heap *heap, duk_hthread *thr, duk_heaphdr *start) {
-#endif
- duk_heaphdr *curr;
-#ifdef DUK_USE_DEBUG
- duk_size_t old_size, new_size;
-#endif
- duk_hobject *obj;
-
- DUK_UNREF(heap);
-
- curr = start;
- while (curr) {
- DUK_DDD(DUK_DDDPRINT("mark-and-sweep compact: %p", (void *) curr));
-
- if (DUK_HEAPHDR_GET_TYPE(curr) != DUK_HTYPE_OBJECT) {
- goto next;
- }
- obj = (duk_hobject *) curr;
-
-#ifdef DUK_USE_DEBUG
- old_size = DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj),
- DUK_HOBJECT_GET_ASIZE(obj),
- DUK_HOBJECT_GET_HSIZE(obj));
-#endif
-
- DUK_DD(DUK_DDPRINT("compact object: %p", (void *) obj));
- duk_push_hobject((duk_context *) thr, obj);
- /* XXX: disable error handlers for duration of compaction? */
- duk_safe_call((duk_context *) thr, duk__protected_compact_object, 1, 0);
-
-#ifdef DUK_USE_DEBUG
- new_size = DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj),
- DUK_HOBJECT_GET_ASIZE(obj),
- DUK_HOBJECT_GET_HSIZE(obj));
-#endif
-
-#ifdef DUK_USE_DEBUG
- (*p_count_compact)++;
- (*p_count_bytes_saved) += (duk_size_t) (old_size - new_size);
-#endif
-
- next:
- curr = DUK_HEAPHDR_GET_NEXT(heap, curr);
-#ifdef DUK_USE_DEBUG
- (*p_count_check)++;
-#endif
- }
-}
-
-DUK_LOCAL void duk__compact_objects(duk_heap *heap) {
- /* XXX: which lists should participate? to be finalized? */
-#ifdef DUK_USE_DEBUG
- duk_size_t count_check = 0;
- duk_size_t count_compact = 0;
- duk_size_t count_bytes_saved = 0;
-#endif
- duk_hthread *thr;
-
- DUK_DD(DUK_DDPRINT("duk__compact_objects: %p", (void *) heap));
-
- thr = duk__get_temp_hthread(heap);
- DUK_ASSERT(thr != NULL);
-
-#ifdef DUK_USE_DEBUG
- duk__compact_object_list(heap, thr, heap->heap_allocated, &count_check, &count_compact, &count_bytes_saved);
- duk__compact_object_list(heap, thr, heap->finalize_list, &count_check, &count_compact, &count_bytes_saved);
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__compact_object_list(heap, thr, heap->refzero_list, &count_check, &count_compact, &count_bytes_saved);
-#endif
-#else
- duk__compact_object_list(heap, thr, heap->heap_allocated);
- duk__compact_object_list(heap, thr, heap->finalize_list);
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__compact_object_list(heap, thr, heap->refzero_list);
-#endif
-#endif
-
-#ifdef DUK_USE_DEBUG
- DUK_D(DUK_DPRINT("mark-and-sweep compact objects: %ld checked, %ld compaction attempts, %ld bytes saved by compaction",
- (long) count_check, (long) count_compact, (long) count_bytes_saved));
-#endif
-}
-
-/*
- * Assertion helpers.
- */
-
-#ifdef DUK_USE_ASSERTIONS
-DUK_LOCAL void duk__assert_heaphdr_flags(duk_heap *heap) {
- duk_heaphdr *hdr;
-
- hdr = heap->heap_allocated;
- while (hdr) {
- DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(hdr));
- /* may have FINALIZED */
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- hdr = heap->refzero_list;
- while (hdr) {
- DUK_ASSERT(!DUK_HEAPHDR_HAS_REACHABLE(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_TEMPROOT(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(hdr));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZED(hdr));
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-#endif /* DUK_USE_REFERENCE_COUNTING */
-}
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-DUK_LOCAL void duk__assert_valid_refcounts(duk_heap *heap) {
- duk_heaphdr *hdr = heap->heap_allocated;
- while (hdr) {
- if (DUK_HEAPHDR_GET_REFCOUNT(hdr) == 0 &&
- DUK_HEAPHDR_HAS_FINALIZED(hdr)) {
- /* An object may be in heap_allocated list with a zero
- * refcount if it has just been finalized and is waiting
- * to be collected by the next cycle.
- */
- } else if (DUK_HEAPHDR_GET_REFCOUNT(hdr) == 0) {
- /* An object may be in heap_allocated list with a zero
- * refcount also if it is a temporary object created by
- * a finalizer; because finalization now runs inside
- * mark-and-sweep, such objects will not be queued to
- * refzero_list and will thus appear here with refcount
- * zero.
- */
-#if 0 /* this case can no longer occur because refcount is unsigned */
- } else if (DUK_HEAPHDR_GET_REFCOUNT(hdr) < 0) {
- DUK_D(DUK_DPRINT("invalid refcount: %ld, %p -> %!O",
- (hdr != NULL ? (long) DUK_HEAPHDR_GET_REFCOUNT(hdr) : (long) 0),
- (void *) hdr, (duk_heaphdr *) hdr));
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(hdr) > 0);
-#endif
- }
- hdr = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
-}
-#endif /* DUK_USE_REFERENCE_COUNTING */
-#endif /* DUK_USE_ASSERTIONS */
-
-/*
- * Finalizer torture. Do one fake finalizer call which causes side effects
- * similar to one or more finalizers on actual objects.
- */
-
-#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE)
-DUK_LOCAL duk_ret_t duk__markandsweep_fake_finalizer(duk_context *ctx) {
- DUK_D(DUK_DPRINT("fake mark-and-sweep torture finalizer executed"));
-
- /* Require a lot of stack to force a value stack grow/shrink.
- * Recursive mark-and-sweep is prevented by allocation macros
- * so this won't trigger another mark-and-sweep.
- */
- duk_require_stack(ctx, 100000);
-
- /* XXX: do something to force a callstack grow/shrink, perhaps
- * just a manual forced resize or a forced relocating realloc?
- */
-
- return 0;
-}
-
-DUK_LOCAL void duk__markandsweep_torture_finalizer(duk_hthread *thr) {
- duk_context *ctx;
- duk_int_t rc;
-
- DUK_ASSERT(thr != NULL);
- ctx = (duk_context *) thr;
-
- /* Avoid fake finalization when callstack limit has been reached.
- * Otherwise a callstack limit error will be created, then refzero'ed.
- */
- if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit ||
- thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) {
- DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake mark-and-sweep torture finalizer"));
- return;
- }
-
- /* Run fake finalizer. Avoid creating unnecessary garbage. */
- duk_push_c_function(ctx, duk__markandsweep_fake_finalizer, 0 /*nargs*/);
- rc = duk_pcall(ctx, 0 /*nargs*/);
- DUK_UNREF(rc); /* ignored */
- duk_pop(ctx);
-}
-#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */
-
-/*
- * Main mark-and-sweep function.
- *
- * 'flags' represents the features requested by the caller. The current
- * heap->mark_and_sweep_base_flags is ORed automatically into the flags;
- * the base flags mask typically prevents certain mark-and-sweep operations
- * to avoid trouble.
- */
-
-DUK_INTERNAL duk_bool_t duk_heap_mark_and_sweep(duk_heap *heap, duk_small_uint_t flags) {
- duk_hthread *thr;
- duk_size_t count_keep_obj;
- duk_size_t count_keep_str;
-#ifdef DUK_USE_VOLUNTARY_GC
- duk_size_t tmp;
-#endif
-
- /* XXX: thread selection for mark-and-sweep is currently a hack.
- * If we don't have a thread, the entire mark-and-sweep is now
- * skipped (although we could just skip finalizations).
- */
-
- /* If thr != NULL, the thr may still be in the middle of
- * initialization.
- * XXX: Improve the thread viability test.
- */
- thr = duk__get_temp_hthread(heap);
- if (thr == NULL) {
- DUK_D(DUK_DPRINT("gc skipped because we don't have a temp thread"));
-
- /* reset voluntary gc trigger count */
-#ifdef DUK_USE_VOLUNTARY_GC
- heap->mark_and_sweep_trigger_counter = DUK_HEAP_MARK_AND_SWEEP_TRIGGER_SKIP;
-#endif
- return 0; /* OK */
- }
-
- /* If debugger is paused, garbage collection is disabled by default. */
- /* XXX: will need a force flag if garbage collection is triggered
- * explicitly during paused state.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_PAUSED(heap)) {
- /* Checking this here rather that in memory alloc primitives
- * reduces checking code there but means a failed allocation
- * will go through a few retries before giving up. That's
- * fine because this only happens during debugging.
- */
- DUK_D(DUK_DPRINT("gc skipped because debugger is paused"));
- return 0;
- }
-#endif
-
- DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) starting, requested flags: 0x%08lx, effective flags: 0x%08lx",
- (unsigned long) flags, (unsigned long) (flags | heap->mark_and_sweep_base_flags)));
-
- flags |= heap->mark_and_sweep_base_flags;
-
- /*
- * Assertions before
- */
-
-#ifdef DUK_USE_ASSERTIONS
- DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap));
- DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap));
- DUK_ASSERT(heap->mark_and_sweep_recursion_depth == 0);
- duk__assert_heaphdr_flags(heap);
-#ifdef DUK_USE_REFERENCE_COUNTING
- /* Note: DUK_HEAP_HAS_REFZERO_FREE_RUNNING(heap) may be true; a refcount
- * finalizer may trigger a mark-and-sweep.
- */
- duk__assert_valid_refcounts(heap);
-#endif /* DUK_USE_REFERENCE_COUNTING */
-#endif /* DUK_USE_ASSERTIONS */
-
- /*
- * Begin
- */
-
- DUK_HEAP_SET_MARKANDSWEEP_RUNNING(heap);
-
- /*
- * Mark roots, hoping that recursion limit is not normally hit.
- * If recursion limit is hit, run additional reachability rounds
- * starting from "temproots" until marking is complete.
- *
- * Marking happens in two phases: first we mark actual reachability
- * roots (and run "temproots" to complete the process). Then we
- * check which objects are unreachable and are finalizable; such
- * objects are marked as FINALIZABLE and marked as reachability
- * (and "temproots" is run again to complete the process).
- *
- * The heap finalize_list must also be marked as a reachability root.
- * There may be objects on the list from a previous round if the
- * previous run had finalizer skip flag.
- */
-
- duk__mark_roots_heap(heap); /* main reachability roots */
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__mark_refzero_list(heap); /* refzero_list treated as reachability roots */
-#endif
- duk__mark_temproots_by_heap_scan(heap); /* temproots */
-
- duk__mark_finalizable(heap); /* mark finalizable as reachability roots */
- duk__mark_finalize_list(heap); /* mark finalizer work list as reachability roots */
- duk__mark_temproots_by_heap_scan(heap); /* temproots */
-
- /*
- * Sweep garbage and remove marking flags, and move objects with
- * finalizers to the finalizer work list.
- *
- * Objects to be swept need to get their refcounts finalized before
- * they are swept. In other words, their target object refcounts
- * need to be decreased. This has to be done before freeing any
- * objects to avoid decref'ing dangling pointers (which may happen
- * even without bugs, e.g. with reference loops)
- *
- * Because strings don't point to other heap objects, similar
- * finalization is not necessary for strings.
- */
-
- /* XXX: more emergency behavior, e.g. find smaller hash sizes etc */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__finalize_refcounts(heap);
-#endif
- duk__sweep_heap(heap, flags, &count_keep_obj);
-#if defined(DUK_USE_STRTAB_CHAIN)
- duk__sweep_stringtable_chain(heap, &count_keep_str);
-#elif defined(DUK_USE_STRTAB_PROBE)
- duk__sweep_stringtable_probe(heap, &count_keep_str);
-#else
-#error internal error, invalid strtab options
-#endif
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk__clear_refzero_list_flags(heap);
-#endif
- duk__clear_finalize_list_flags(heap);
-
- /*
- * Object compaction (emergency only).
- *
- * Object compaction is a separate step after sweeping, as there is
- * more free memory for it to work with. Also, currently compaction
- * may insert new objects into the heap allocated list and the string
- * table which we don't want to do during a sweep (the reachability
- * flags of such objects would be incorrect). The objects inserted
- * are currently:
- *
- * - a temporary duk_hbuffer for a new properties allocation
- * - if array part is abandoned, string keys are interned
- *
- * The object insertions go to the front of the list, so they do not
- * cause an infinite loop (they are not compacted).
- */
-
- if ((flags & DUK_MS_FLAG_EMERGENCY) &&
- !(flags & DUK_MS_FLAG_NO_OBJECT_COMPACTION)) {
- duk__compact_objects(heap);
- }
-
- /*
- * String table resize check.
- *
- * Note: this may silently (and safely) fail if GC is caused by an
- * allocation call in stringtable resize_hash(). Resize_hash()
- * will prevent a recursive call to itself by setting the
- * DUK_MS_FLAG_NO_STRINGTABLE_RESIZE in heap->mark_and_sweep_base_flags.
- */
-
- /* XXX: stringtable emergency compaction? */
-
-#if defined(DUK_USE_MS_STRINGTABLE_RESIZE)
- if (!(flags & DUK_MS_FLAG_NO_STRINGTABLE_RESIZE)) {
- DUK_DD(DUK_DDPRINT("resize stringtable: %p", (void *) heap));
- duk_heap_force_strtab_resize(heap);
- } else {
- DUK_D(DUK_DPRINT("stringtable resize skipped because DUK_MS_FLAG_NO_STRINGTABLE_RESIZE is set"));
- }
-#endif
-
- /*
- * Finalize objects in the finalization work list. Finalized
- * objects are queued back to heap_allocated with FINALIZED set.
- *
- * Since finalizers may cause arbitrary side effects, they are
- * prevented during string table and object property allocation
- * resizing using the DUK_MS_FLAG_NO_FINALIZERS flag in
- * heap->mark_and_sweep_base_flags. In this case the objects
- * remain in the finalization work list after mark-and-sweep
- * exits and they may be finalized on the next pass.
- *
- * Finalization currently happens inside "MARKANDSWEEP_RUNNING"
- * protection (no mark-and-sweep may be triggered by the
- * finalizers). As a side effect:
- *
- * 1) an out-of-memory error inside a finalizer will not
- * cause a mark-and-sweep and may cause the finalizer
- * to fail unnecessarily
- *
- * 2) any temporary objects whose refcount decreases to zero
- * during finalization will not be put into refzero_list;
- * they can only be collected by another mark-and-sweep
- *
- * This is not optimal, but since the sweep for this phase has
- * already happened, this is probably good enough for now.
- */
-
-#if defined(DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE)
- /* Cannot simulate individual finalizers because finalize_list only
- * contains objects with actual finalizers. But simulate side effects
- * from finalization by doing a bogus function call and resizing the
- * stacks.
- */
- if (flags & DUK_MS_FLAG_NO_FINALIZERS) {
- DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, DUK_MS_FLAG_NO_FINALIZERS is set"));
- } else if (!(thr->valstack != NULL && thr->callstack != NULL && thr->catchstack != NULL)) {
- DUK_D(DUK_DPRINT("skip mark-and-sweep torture finalizer, thread not yet viable"));
- } else {
- DUK_D(DUK_DPRINT("run mark-and-sweep torture finalizer"));
- duk__markandsweep_torture_finalizer(thr);
- }
-#endif /* DUK_USE_MARKANDSWEEP_FINALIZER_TORTURE */
-
- if (flags & DUK_MS_FLAG_NO_FINALIZERS) {
- DUK_D(DUK_DPRINT("finalizer run skipped because DUK_MS_FLAG_NO_FINALIZERS is set"));
- } else {
- duk__run_object_finalizers(heap, flags);
- }
-
- /*
- * Finish
- */
-
- DUK_HEAP_CLEAR_MARKANDSWEEP_RUNNING(heap);
-
- /*
- * Assertions after
- */
-
-#ifdef DUK_USE_ASSERTIONS
- DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap));
- DUK_ASSERT(!DUK_HEAP_HAS_MARKANDSWEEP_RECLIMIT_REACHED(heap));
- DUK_ASSERT(heap->mark_and_sweep_recursion_depth == 0);
- duk__assert_heaphdr_flags(heap);
-#ifdef DUK_USE_REFERENCE_COUNTING
- /* Note: DUK_HEAP_HAS_REFZERO_FREE_RUNNING(heap) may be true; a refcount
- * finalizer may trigger a mark-and-sweep.
- */
- duk__assert_valid_refcounts(heap);
-#endif /* DUK_USE_REFERENCE_COUNTING */
-#endif /* DUK_USE_ASSERTIONS */
-
- /*
- * Reset trigger counter
- */
-
-#ifdef DUK_USE_VOLUNTARY_GC
- tmp = (count_keep_obj + count_keep_str) / 256;
- heap->mark_and_sweep_trigger_counter = (duk_int_t) (
- (tmp * DUK_HEAP_MARK_AND_SWEEP_TRIGGER_MULT) +
- DUK_HEAP_MARK_AND_SWEEP_TRIGGER_ADD);
- DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) finished: %ld objects kept, %ld strings kept, trigger reset to %ld",
- (long) count_keep_obj, (long) count_keep_str, (long) heap->mark_and_sweep_trigger_counter));
-#else
- DUK_D(DUK_DPRINT("garbage collect (mark-and-sweep) finished: %ld objects kept, %ld strings kept, no voluntary trigger",
- (long) count_keep_obj, (long) count_keep_str));
-#endif
-
- return 0; /* OK */
-}
-
-#else /* DUK_USE_MARK_AND_SWEEP */
-
-/* no mark-and-sweep gc */
-
-#endif /* DUK_USE_MARK_AND_SWEEP */
-#line 1 "duk_heap_memory.c"
-/*
- * Memory allocation handling.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Helpers
- *
- * The fast path checks are done within a macro to ensure "inlining"
- * while the slow path actions use a helper (which won't typically be
- * inlined in size optimized builds).
- */
-
-#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_VOLUNTARY_GC)
-#define DUK__VOLUNTARY_PERIODIC_GC(heap) do { \
- (heap)->mark_and_sweep_trigger_counter--; \
- if ((heap)->mark_and_sweep_trigger_counter <= 0) { \
- duk__run_voluntary_gc(heap); \
- } \
- } while (0)
-
-DUK_LOCAL void duk__run_voluntary_gc(duk_heap *heap) {
- if (DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_DD(DUK_DDPRINT("mark-and-sweep in progress -> skip voluntary mark-and-sweep now"));
- } else {
- duk_small_uint_t flags;
- duk_bool_t rc;
-
- DUK_D(DUK_DPRINT("triggering voluntary mark-and-sweep"));
- flags = 0;
- rc = duk_heap_mark_and_sweep(heap, flags);
- DUK_UNREF(rc);
- }
-}
-#else
-#define DUK__VOLUNTARY_PERIODIC_GC(heap) /* no voluntary gc */
-#endif /* DUK_USE_MARK_AND_SWEEP && DUK_USE_VOLUNTARY_GC */
-
-/*
- * Allocate memory with garbage collection
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-DUK_INTERNAL void *duk_heap_mem_alloc(duk_heap *heap, duk_size_t size) {
- void *res;
- duk_bool_t rc;
- duk_small_int_t i;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT_DISABLE(size >= 0);
-
- /*
- * Voluntary periodic GC (if enabled)
- */
-
- DUK__VOLUNTARY_PERIODIC_GC(heap);
-
- /*
- * First attempt
- */
-
-#ifdef DUK_USE_GC_TORTURE
- /* simulate alloc failure on every alloc (except when mark-and-sweep is running) */
- if (!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first alloc attempt fails"));
- res = NULL;
- DUK_UNREF(res);
- goto skip_attempt;
- }
-#endif
- res = heap->alloc_func(heap->heap_udata, size);
- if (res || size == 0) {
- /* for zero size allocations NULL is allowed */
- return res;
- }
-#ifdef DUK_USE_GC_TORTURE
- skip_attempt:
-#endif
-
- DUK_D(DUK_DPRINT("first alloc attempt failed, attempt to gc and retry"));
-
- /*
- * Avoid a GC if GC is already running. This can happen at a late
- * stage in a GC when we try to e.g. resize the stringtable
- * or compact objects.
- */
-
- if (DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_D(DUK_DPRINT("duk_heap_mem_alloc() failed, gc in progress (gc skipped), alloc size %ld", (long) size));
- return NULL;
- }
-
- /*
- * Retry with several GC attempts. Initial attempts are made without
- * emergency mode; later attempts use emergency mode which minimizes
- * memory allocations forcibly.
- */
-
- for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) {
- duk_small_uint_t flags;
-
- flags = 0;
- if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) {
- flags |= DUK_MS_FLAG_EMERGENCY;
- }
-
- rc = duk_heap_mark_and_sweep(heap, flags);
- DUK_UNREF(rc);
-
- res = heap->alloc_func(heap->heap_udata, size);
- if (res) {
- DUK_D(DUK_DPRINT("duk_heap_mem_alloc() succeeded after gc (pass %ld), alloc size %ld",
- (long) (i + 1), (long) size));
- return res;
- }
- }
-
- DUK_D(DUK_DPRINT("duk_heap_mem_alloc() failed even after gc, alloc size %ld", (long) size));
- return NULL;
-}
-#else /* DUK_USE_MARK_AND_SWEEP */
-/*
- * Compared to a direct macro expansion this wrapper saves a few
- * instructions because no heap dereferencing is required.
- */
-DUK_INTERNAL void *duk_heap_mem_alloc(duk_heap *heap, duk_size_t size) {
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT_DISABLE(size >= 0);
-
- return heap->alloc_func(heap->heap_udata, size);
-}
-#endif /* DUK_USE_MARK_AND_SWEEP */
-
-DUK_INTERNAL void *duk_heap_mem_alloc_zeroed(duk_heap *heap, duk_size_t size) {
- void *res;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT_DISABLE(size >= 0);
-
- res = DUK_ALLOC(heap, size);
- if (res) {
- /* assume memset with zero size is OK */
- DUK_MEMZERO(res, size);
- }
- return res;
-}
-
-/*
- * Reallocate memory with garbage collection
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-DUK_INTERNAL void *duk_heap_mem_realloc(duk_heap *heap, void *ptr, duk_size_t newsize) {
- void *res;
- duk_bool_t rc;
- duk_small_int_t i;
-
- DUK_ASSERT(heap != NULL);
- /* ptr may be NULL */
- DUK_ASSERT_DISABLE(newsize >= 0);
-
- /*
- * Voluntary periodic GC (if enabled)
- */
-
- DUK__VOLUNTARY_PERIODIC_GC(heap);
-
- /*
- * First attempt
- */
-
-#ifdef DUK_USE_GC_TORTURE
- /* simulate alloc failure on every realloc (except when mark-and-sweep is running) */
- if (!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first realloc attempt fails"));
- res = NULL;
- DUK_UNREF(res);
- goto skip_attempt;
- }
-#endif
- res = heap->realloc_func(heap->heap_udata, ptr, newsize);
- if (res || newsize == 0) {
- /* for zero size allocations NULL is allowed */
- return res;
- }
-#ifdef DUK_USE_GC_TORTURE
- skip_attempt:
-#endif
-
- DUK_D(DUK_DPRINT("first realloc attempt failed, attempt to gc and retry"));
-
- /*
- * Avoid a GC if GC is already running. See duk_heap_mem_alloc().
- */
-
- if (DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc() failed, gc in progress (gc skipped), alloc size %ld", (long) newsize));
- return NULL;
- }
-
- /*
- * Retry with several GC attempts. Initial attempts are made without
- * emergency mode; later attempts use emergency mode which minimizes
- * memory allocations forcibly.
- */
-
- for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) {
- duk_small_uint_t flags;
-
- flags = 0;
- if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) {
- flags |= DUK_MS_FLAG_EMERGENCY;
- }
-
- rc = duk_heap_mark_and_sweep(heap, flags);
- DUK_UNREF(rc);
-
- res = heap->realloc_func(heap->heap_udata, ptr, newsize);
- if (res || newsize == 0) {
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc() succeeded after gc (pass %ld), alloc size %ld",
- (long) (i + 1), (long) newsize));
- return res;
- }
- }
-
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc() failed even after gc, alloc size %ld", (long) newsize));
- return NULL;
-}
-#else /* DUK_USE_MARK_AND_SWEEP */
-/* saves a few instructions to have this wrapper (see comment on duk_heap_mem_alloc) */
-DUK_INTERNAL void *duk_heap_mem_realloc(duk_heap *heap, void *ptr, duk_size_t newsize) {
- DUK_ASSERT(heap != NULL);
- /* ptr may be NULL */
- DUK_ASSERT_DISABLE(newsize >= 0);
-
- return heap->realloc_func(heap->heap_udata, ptr, newsize);
-}
-#endif /* DUK_USE_MARK_AND_SWEEP */
-
-/*
- * Reallocate memory with garbage collection, using a callback to provide
- * the current allocated pointer. This variant is used when a mark-and-sweep
- * (e.g. finalizers) might change the original pointer.
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-DUK_INTERNAL void *duk_heap_mem_realloc_indirect(duk_heap *heap, duk_mem_getptr cb, void *ud, duk_size_t newsize) {
- void *res;
- duk_bool_t rc;
- duk_small_int_t i;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT_DISABLE(newsize >= 0);
-
- /*
- * Voluntary periodic GC (if enabled)
- */
-
- DUK__VOLUNTARY_PERIODIC_GC(heap);
-
- /*
- * First attempt
- */
-
-#ifdef DUK_USE_GC_TORTURE
- /* simulate alloc failure on every realloc (except when mark-and-sweep is running) */
- if (!DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_DDD(DUK_DDDPRINT("gc torture enabled, pretend that first indirect realloc attempt fails"));
- res = NULL;
- DUK_UNREF(res);
- goto skip_attempt;
- }
-#endif
- res = heap->realloc_func(heap->heap_udata, cb(heap, ud), newsize);
- if (res || newsize == 0) {
- /* for zero size allocations NULL is allowed */
- return res;
- }
-#ifdef DUK_USE_GC_TORTURE
- skip_attempt:
-#endif
-
- DUK_D(DUK_DPRINT("first indirect realloc attempt failed, attempt to gc and retry"));
-
- /*
- * Avoid a GC if GC is already running. See duk_heap_mem_alloc().
- */
-
- if (DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap)) {
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() failed, gc in progress (gc skipped), alloc size %ld", (long) newsize));
- return NULL;
- }
-
- /*
- * Retry with several GC attempts. Initial attempts are made without
- * emergency mode; later attempts use emergency mode which minimizes
- * memory allocations forcibly.
- */
-
- for (i = 0; i < DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_LIMIT; i++) {
- duk_small_uint_t flags;
-
-#ifdef DUK_USE_ASSERTIONS
- void *ptr_pre; /* ptr before mark-and-sweep */
- void *ptr_post;
-#endif
-
-#ifdef DUK_USE_ASSERTIONS
- ptr_pre = cb(heap, ud);
-#endif
- flags = 0;
- if (i >= DUK_HEAP_ALLOC_FAIL_MARKANDSWEEP_EMERGENCY_LIMIT - 1) {
- flags |= DUK_MS_FLAG_EMERGENCY;
- }
-
- rc = duk_heap_mark_and_sweep(heap, flags);
- DUK_UNREF(rc);
-#ifdef DUK_USE_ASSERTIONS
- ptr_post = cb(heap, ud);
- if (ptr_pre != ptr_post) {
- /* useful for debugging */
- DUK_DD(DUK_DDPRINT("note: base pointer changed by mark-and-sweep: %p -> %p",
- (void *) ptr_pre, (void *) ptr_post));
- }
-#endif
-
- /* Note: key issue here is to re-lookup the base pointer on every attempt.
- * The pointer being reallocated may change after every mark-and-sweep.
- */
-
- res = heap->realloc_func(heap->heap_udata, cb(heap, ud), newsize);
- if (res || newsize == 0) {
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() succeeded after gc (pass %ld), alloc size %ld",
- (long) (i + 1), (long) newsize));
- return res;
- }
- }
-
- DUK_D(DUK_DPRINT("duk_heap_mem_realloc_indirect() failed even after gc, alloc size %ld", (long) newsize));
- return NULL;
-}
-#else /* DUK_USE_MARK_AND_SWEEP */
-/* saves a few instructions to have this wrapper (see comment on duk_heap_mem_alloc) */
-DUK_INTERNAL void *duk_heap_mem_realloc_indirect(duk_heap *heap, duk_mem_getptr cb, void *ud, duk_size_t newsize) {
- return heap->realloc_func(heap->heap_udata, cb(heap, ud), newsize);
-}
-#endif /* DUK_USE_MARK_AND_SWEEP */
-
-/*
- * Free memory
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
-DUK_INTERNAL void duk_heap_mem_free(duk_heap *heap, void *ptr) {
- DUK_ASSERT(heap != NULL);
- /* ptr may be NULL */
-
- /* Must behave like a no-op with NULL and any pointer returned from
- * malloc/realloc with zero size.
- */
- heap->free_func(heap->heap_udata, ptr);
-
- /* Count free operations toward triggering a GC but never actually trigger
- * a GC from a free. Otherwise code which frees internal structures would
- * need to put in NULLs at every turn to ensure the object is always in
- * consistent state for a mark-and-sweep.
- */
-#ifdef DUK_USE_VOLUNTARY_GC
- heap->mark_and_sweep_trigger_counter--;
-#endif
-}
-#else
-/* saves a few instructions to have this wrapper (see comment on duk_heap_mem_alloc) */
-DUK_INTERNAL void duk_heap_mem_free(duk_heap *heap, void *ptr) {
- DUK_ASSERT(heap != NULL);
- /* ptr may be NULL */
-
- /* Note: must behave like a no-op with NULL and any pointer
- * returned from malloc/realloc with zero size.
- */
- heap->free_func(heap->heap_udata, ptr);
-}
-#endif
-#line 1 "duk_heap_misc.c"
-/*
- * Support functions for duk_heap.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP) && defined(DUK_USE_REFERENCE_COUNTING)
-/* arbitrary remove only works with double linked heap, and is only required by
- * reference counting so far.
- */
-DUK_INTERNAL void duk_heap_remove_any_from_heap_allocated(duk_heap *heap, duk_heaphdr *hdr) {
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(hdr) != DUK_HTYPE_STRING);
-
- if (DUK_HEAPHDR_GET_PREV(heap, hdr)) {
- DUK_HEAPHDR_SET_NEXT(heap, DUK_HEAPHDR_GET_PREV(heap, hdr), DUK_HEAPHDR_GET_NEXT(heap, hdr));
- } else {
- heap->heap_allocated = DUK_HEAPHDR_GET_NEXT(heap, hdr);
- }
- if (DUK_HEAPHDR_GET_NEXT(heap, hdr)) {
- DUK_HEAPHDR_SET_PREV(heap, DUK_HEAPHDR_GET_NEXT(heap, hdr), DUK_HEAPHDR_GET_PREV(heap, hdr));
- } else {
- ;
- }
-
- /* The prev/next pointers of the removed duk_heaphdr are left as garbage.
- * It's up to the caller to ensure they're written before inserting the
- * object back.
- */
-}
-#endif
-
-DUK_INTERNAL void duk_heap_insert_into_heap_allocated(duk_heap *heap, duk_heaphdr *hdr) {
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(hdr) != DUK_HTYPE_STRING);
-
-#ifdef DUK_USE_DOUBLE_LINKED_HEAP
- if (heap->heap_allocated) {
- DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, heap->heap_allocated) == NULL);
- DUK_HEAPHDR_SET_PREV(heap, heap->heap_allocated, hdr);
- }
- DUK_HEAPHDR_SET_PREV(heap, hdr, NULL);
-#endif
- DUK_HEAPHDR_SET_NEXT(heap, hdr, heap->heap_allocated);
- heap->heap_allocated = hdr;
-}
-
-#ifdef DUK_USE_INTERRUPT_COUNTER
-DUK_INTERNAL void duk_heap_switch_thread(duk_heap *heap, duk_hthread *new_thr) {
- duk_hthread *curr_thr;
-
- DUK_ASSERT(heap != NULL);
-
- if (new_thr != NULL) {
- curr_thr = heap->curr_thread;
- if (curr_thr == NULL) {
- /* For initial entry use default value; zero forces an
- * interrupt before executing the first insturction.
- */
- DUK_DD(DUK_DDPRINT("switch thread, initial entry, init default interrupt counter"));
- new_thr->interrupt_counter = 0;
- new_thr->interrupt_init = 0;
- } else {
- /* Copy interrupt counter/init value state to new thread (if any).
- * It's OK for new_thr to be the same as curr_thr.
- */
-#if defined(DUK_USE_DEBUG)
- if (new_thr != curr_thr) {
- DUK_DD(DUK_DDPRINT("switch thread, not initial entry, copy interrupt counter"));
- }
-#endif
- new_thr->interrupt_counter = curr_thr->interrupt_counter;
- new_thr->interrupt_init = curr_thr->interrupt_init;
- }
- } else {
- DUK_DD(DUK_DDPRINT("switch thread, new thread is NULL, no interrupt counter changes"));
- }
-
- heap->curr_thread = new_thr; /* may be NULL */
-}
-#endif /* DUK_USE_INTERRUPT_COUNTER */
-#line 1 "duk_heap_refcount.c"
-/*
- * Reference counting implementation.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
-
-#ifndef DUK_USE_DOUBLE_LINKED_HEAP
-#error internal error, reference counting requires a double linked heap
-#endif
-
-/*
- * Misc
- */
-
-DUK_LOCAL void duk__queue_refzero(duk_heap *heap, duk_heaphdr *hdr) {
- /* tail insert: don't disturb head in case refzero is running */
-
- if (heap->refzero_list != NULL) {
- duk_heaphdr *hdr_prev;
-
- hdr_prev = heap->refzero_list_tail;
- DUK_ASSERT(hdr_prev != NULL);
- DUK_ASSERT(DUK_HEAPHDR_GET_NEXT(heap, hdr_prev) == NULL);
-
- DUK_HEAPHDR_SET_NEXT(heap, hdr, NULL);
- DUK_HEAPHDR_SET_PREV(heap, hdr, hdr_prev);
- DUK_HEAPHDR_SET_NEXT(heap, hdr_prev, hdr);
- DUK_ASSERT_HEAPHDR_LINKS(heap, hdr);
- DUK_ASSERT_HEAPHDR_LINKS(heap, hdr_prev);
- heap->refzero_list_tail = hdr;
- } else {
- DUK_ASSERT(heap->refzero_list_tail == NULL);
- DUK_HEAPHDR_SET_NEXT(heap, hdr, NULL);
- DUK_HEAPHDR_SET_PREV(heap, hdr, NULL);
- DUK_ASSERT_HEAPHDR_LINKS(heap, hdr);
- heap->refzero_list = hdr;
- heap->refzero_list_tail = hdr;
- }
-}
-
-/*
- * Heap object refcount finalization.
- *
- * When an object is about to be freed, all other objects it refers to must
- * be decref'd. Refcount finalization does NOT free the object or its inner
- * allocations (mark-and-sweep shares these helpers), it just manipulates
- * the refcounts.
- *
- * Note that any of the decref's may cause a refcount to drop to zero, BUT
- * it will not be processed inline; instead, because refzero is already
- * running, the objects will just be queued to refzero list and processed
- * later. This eliminates C recursion.
- */
-
-DUK_LOCAL void duk__refcount_finalize_hobject(duk_hthread *thr, duk_hobject *h) {
- duk_uint_fast32_t i;
-
- DUK_ASSERT(h);
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE((duk_heaphdr *) h) == DUK_HTYPE_OBJECT);
-
- /* XXX: better to get base and walk forwards? */
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h); i++) {
- duk_hstring *key = DUK_HOBJECT_E_GET_KEY(thr->heap, h, i);
- if (!key) {
- continue;
- }
- duk_heaphdr_decref(thr, (duk_heaphdr *) key);
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h, i)) {
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, h, i));
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, h, i));
- } else {
- duk_tval_decref(thr, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h, i));
- }
- }
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(h); i++) {
- duk_tval_decref(thr, DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, h, i));
- }
-
- /* hash part is a 'weak reference' and does not contribute */
-
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h));
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(h)) {
- duk_hcompiledfunction *f = (duk_hcompiledfunction *) h;
- duk_tval *tv, *tv_end;
- duk_hobject **funcs, **funcs_end;
-
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, f) != NULL); /* compiled functions must be created 'atomically' */
-
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, f);
- tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, f);
- while (tv < tv_end) {
- duk_tval_decref(thr, tv);
- tv++;
- }
-
- funcs = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, f);
- funcs_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, f);
- while (funcs < funcs_end) {
- duk_heaphdr_decref(thr, (duk_heaphdr *) *funcs);
- funcs++;
- }
-
- duk_heaphdr_decref(thr, (duk_heaphdr *) DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, f));
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(h)) {
- duk_hnativefunction *f = (duk_hnativefunction *) h;
- DUK_UNREF(f);
- /* nothing to finalize */
- } else if (DUK_HOBJECT_IS_BUFFEROBJECT(h)) {
- duk_hbufferobject *b = (duk_hbufferobject *) h;
- if (b->buf) {
- duk_heaphdr_decref(thr, (duk_heaphdr *) b->buf);
- }
- } else if (DUK_HOBJECT_IS_THREAD(h)) {
- duk_hthread *t = (duk_hthread *) h;
- duk_tval *tv;
-
- tv = t->valstack;
- while (tv < t->valstack_top) {
- duk_tval_decref(thr, tv);
- tv++;
- }
-
- for (i = 0; i < (duk_uint_fast32_t) t->callstack_top; i++) {
- duk_activation *act = t->callstack + i;
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) DUK_ACT_GET_FUNC(act));
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->var_env);
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->lex_env);
-#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) act->prev_caller);
-#endif
- }
-
-#if 0 /* nothing now */
- for (i = 0; i < (duk_uint_fast32_t) t->catchstack_top; i++) {
- duk_catcher *cat = t->catchstack + i;
- }
-#endif
-
- for (i = 0; i < DUK_NUM_BUILTINS; i++) {
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) t->builtins[i]);
- }
-
- duk_heaphdr_decref_allownull(thr, (duk_heaphdr *) t->resumer);
- }
-}
-
-DUK_INTERNAL void duk_heaphdr_refcount_finalize(duk_hthread *thr, duk_heaphdr *hdr) {
- DUK_ASSERT(hdr);
-
- switch ((int) DUK_HEAPHDR_GET_TYPE(hdr)) {
- case DUK_HTYPE_OBJECT:
- duk__refcount_finalize_hobject(thr, (duk_hobject *) hdr);
- break;
- case DUK_HTYPE_BUFFER:
- /* nothing to finalize */
- break;
- case DUK_HTYPE_STRING:
- /* cannot happen: strings are not put into refzero list (they don't even have the next/prev pointers) */
- default:
- DUK_UNREACHABLE();
- }
-}
-
-#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE)
-DUK_LOCAL duk_ret_t duk__refcount_fake_finalizer(duk_context *ctx) {
- DUK_UNREF(ctx);
- DUK_D(DUK_DPRINT("fake refcount torture finalizer executed"));
-#if 0
- DUK_DD(DUK_DDPRINT("fake torture finalizer for: %!T", duk_get_tval(ctx, 0)));
-#endif
- /* Require a lot of stack to force a value stack grow/shrink. */
- duk_require_stack(ctx, 100000);
-
- /* XXX: do something to force a callstack grow/shrink, perhaps
- * just a manual forced resize?
- */
- return 0;
-}
-
-DUK_LOCAL void duk__refcount_run_torture_finalizer(duk_hthread *thr, duk_hobject *obj) {
- duk_context *ctx;
- duk_int_t rc;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- ctx = (duk_context *) thr;
-
- /* Avoid fake finalization for the duk__refcount_fake_finalizer function
- * itself, otherwise we're in infinite recursion.
- */
- if (DUK_HOBJECT_HAS_NATIVEFUNCTION(obj)) {
- if (((duk_hnativefunction *) obj)->func == duk__refcount_fake_finalizer) {
- DUK_DD(DUK_DDPRINT("avoid fake torture finalizer for duk__refcount_fake_finalizer itself"));
- return;
- }
- }
- /* Avoid fake finalization when callstack limit has been reached.
- * Otherwise a callstack limit error will be created, then refzero'ed,
- * and we're in an infinite loop.
- */
- if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit ||
- thr->callstack_size + 2 * DUK_CALLSTACK_GROW_STEP >= thr->callstack_max /*approximate*/) {
- DUK_D(DUK_DPRINT("call recursion depth reached, avoid fake torture finalizer"));
- return;
- }
-
- /* Run fake finalizer. Avoid creating new refzero queue entries
- * so that we are not forced into a forever loop.
- */
- duk_push_c_function(ctx, duk__refcount_fake_finalizer, 1 /*nargs*/);
- duk_push_hobject(ctx, obj);
- rc = duk_pcall(ctx, 1);
- DUK_UNREF(rc); /* ignored */
- duk_pop(ctx);
-}
-#endif /* DUK_USE_REFZERO_FINALIZER_TORTURE */
-
-/*
- * Refcount memory freeing loop.
- *
- * Frees objects in the refzero_pending list until the list becomes
- * empty. When an object is freed, its references get decref'd and
- * may cause further objects to be queued for freeing.
- *
- * This could be expanded to allow incremental freeing: just bail out
- * early and resume at a future alloc/decref/refzero.
- */
-
-DUK_LOCAL void duk__refzero_free_pending(duk_hthread *thr) {
- duk_heaphdr *h1, *h2;
- duk_heap *heap;
- duk_int_t count = 0;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- heap = thr->heap;
- DUK_ASSERT(heap != NULL);
-
- /*
- * Detect recursive invocation
- */
-
- if (DUK_HEAP_HAS_REFZERO_FREE_RUNNING(heap)) {
- DUK_DDD(DUK_DDDPRINT("refzero free running, skip run"));
- return;
- }
-
- /*
- * Churn refzero_list until empty
- */
-
- DUK_HEAP_SET_REFZERO_FREE_RUNNING(heap);
- while (heap->refzero_list) {
- duk_hobject *obj;
- duk_bool_t rescued = 0;
-
- /*
- * Pick an object from the head (don't remove yet).
- */
-
- h1 = heap->refzero_list;
- obj = (duk_hobject *) h1;
- DUK_DD(DUK_DDPRINT("refzero processing %p: %!O", (void *) h1, (duk_heaphdr *) h1));
- DUK_ASSERT(DUK_HEAPHDR_GET_PREV(heap, h1) == NULL);
- DUK_ASSERT(DUK_HEAPHDR_GET_TYPE(h1) == DUK_HTYPE_OBJECT); /* currently, always the case */
-
-#if defined(DUK_USE_REFZERO_FINALIZER_TORTURE)
- /* Torture option to shake out finalizer side effect issues:
- * make a bogus function call for every finalizable object,
- * essentially simulating the case where everything has a
- * finalizer.
- */
- DUK_DD(DUK_DDPRINT("refzero torture enabled, fake finalizer"));
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h1) == 0);
- DUK_HEAPHDR_PREINC_REFCOUNT(h1); /* bump refcount to prevent refzero during finalizer processing */
- duk__refcount_run_torture_finalizer(thr, obj); /* must never longjmp */
- DUK_HEAPHDR_PREDEC_REFCOUNT(h1); /* remove artificial bump */
- DUK_ASSERT_DISABLE(h1->h_refcount >= 0); /* refcount is unsigned, so always true */
-#endif
-
- /*
- * Finalizer check.
- *
- * Note: running a finalizer may have arbitrary side effects, e.g.
- * queue more objects on refzero_list (tail), or even trigger a
- * mark-and-sweep.
- *
- * Note: quick reject check should match vast majority of
- * objects and must be safe (not throw any errors, ever).
- */
-
- /* An object may have FINALIZED here if it was finalized by mark-and-sweep
- * on a previous run and refcount then decreased to zero. We won't run the
- * finalizer again here.
- */
-
- /* A finalizer is looked up from the object and up its prototype chain
- * (which allows inherited finalizers).
- */
- if (duk_hobject_hasprop_raw(thr, obj, DUK_HTHREAD_STRING_INT_FINALIZER(thr))) {
- DUK_DDD(DUK_DDDPRINT("object has a finalizer, run it"));
-
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h1) == 0);
- DUK_HEAPHDR_PREINC_REFCOUNT(h1); /* bump refcount to prevent refzero during finalizer processing */
-
- duk_hobject_run_finalizer(thr, obj); /* must never longjmp */
- DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZED(h1)); /* duk_hobject_run_finalizer() sets */
-
- DUK_HEAPHDR_PREDEC_REFCOUNT(h1); /* remove artificial bump */
- DUK_ASSERT_DISABLE(h1->h_refcount >= 0); /* refcount is unsigned, so always true */
-
- if (DUK_HEAPHDR_GET_REFCOUNT(h1) != 0) {
- DUK_DDD(DUK_DDDPRINT("-> object refcount after finalization non-zero, object will be rescued"));
- rescued = 1;
- } else {
- DUK_DDD(DUK_DDDPRINT("-> object refcount still zero after finalization, object will be freed"));
- }
- }
-
- /* Refzero head is still the same. This is the case even if finalizer
- * inserted more refzero objects; they are inserted to the tail.
- */
- DUK_ASSERT(h1 == heap->refzero_list);
-
- /*
- * Remove the object from the refzero list. This cannot be done
- * before a possible finalizer has been executed; the finalizer
- * may trigger a mark-and-sweep, and mark-and-sweep must be able
- * to traverse a complete refzero_list.
- */
-
- h2 = DUK_HEAPHDR_GET_NEXT(heap, h1);
- if (h2) {
- DUK_HEAPHDR_SET_PREV(heap, h2, NULL); /* not strictly necessary */
- heap->refzero_list = h2;
- } else {
- heap->refzero_list = NULL;
- heap->refzero_list_tail = NULL;
- }
-
- /*
- * Rescue or free.
- */
-
- if (rescued) {
- /* yes -> move back to heap allocated */
- DUK_DD(DUK_DDPRINT("object rescued during refcount finalization: %p", (void *) h1));
- DUK_ASSERT(!DUK_HEAPHDR_HAS_FINALIZABLE(h1));
- DUK_ASSERT(DUK_HEAPHDR_HAS_FINALIZED(h1));
- DUK_HEAPHDR_CLEAR_FINALIZED(h1);
- h2 = heap->heap_allocated;
- DUK_HEAPHDR_SET_PREV(heap, h1, NULL);
- if (h2) {
- DUK_HEAPHDR_SET_PREV(heap, h2, h1);
- }
- DUK_HEAPHDR_SET_NEXT(heap, h1, h2);
- DUK_ASSERT_HEAPHDR_LINKS(heap, h1);
- DUK_ASSERT_HEAPHDR_LINKS(heap, h2);
- heap->heap_allocated = h1;
- } else {
- /* no -> decref members, then free */
- duk__refcount_finalize_hobject(thr, obj);
- duk_heap_free_heaphdr_raw(heap, h1);
- }
-
- count++;
- }
- DUK_HEAP_CLEAR_REFZERO_FREE_RUNNING(heap);
-
- DUK_DDD(DUK_DDDPRINT("refzero processed %ld objects", (long) count));
-
- /*
- * Once the whole refzero cascade has been freed, check for
- * a voluntary mark-and-sweep.
- */
-
-#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_VOLUNTARY_GC)
- /* 'count' is more or less comparable to normal trigger counter update
- * which happens in memory block (re)allocation.
- */
- heap->mark_and_sweep_trigger_counter -= count;
- if (heap->mark_and_sweep_trigger_counter <= 0) {
- duk_bool_t rc;
- duk_small_uint_t flags = 0; /* not emergency */
- DUK_D(DUK_DPRINT("refcount triggering mark-and-sweep"));
- rc = duk_heap_mark_and_sweep(heap, flags);
- DUK_UNREF(rc);
- DUK_D(DUK_DPRINT("refcount triggered mark-and-sweep => rc %ld", (long) rc));
- }
-#endif /* DUK_USE_MARK_AND_SWEEP && DUK_USE_VOLUNTARY_GC */
-}
-
-/*
- * Incref and decref functions.
- *
- * Decref may trigger immediate refzero handling, which may free and finalize
- * an arbitrary number of objects.
- *
- */
-
-DUK_INTERNAL void duk_heaphdr_refzero(duk_hthread *thr, duk_heaphdr *h) {
- duk_heap *heap;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(h != NULL);
-
- heap = thr->heap;
- DUK_DDD(DUK_DDDPRINT("refzero %p: %!O", (void *) h, (duk_heaphdr *) h));
-
- /*
- * Refzero handling is skipped entirely if (1) mark-and-sweep is
- * running or (2) execution is paused in the debugger. The objects
- * are left in the heap, and will be freed by mark-and-sweep or
- * eventual heap destruction.
- *
- * This is necessary during mark-and-sweep because refcounts are also
- * updated during the sweep phase (otherwise objects referenced by a
- * swept object would have incorrect refcounts) which then calls here.
- * This could be avoided by using separate decref macros in
- * mark-and-sweep; however, mark-and-sweep also calls finalizers which
- * would use the ordinary decref macros anyway and still call this
- * function.
- *
- * This check must be enabled also when mark-and-sweep support has been
- * disabled: the flag is also used in heap destruction when running
- * finalizers for remaining objects, and the flag prevents objects from
- * being moved around in heap linked lists.
- */
-
- /* XXX: ideally this would be just one flag (maybe a derived one) so
- * that a single bit test is sufficient to check the condition.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_UNLIKELY(DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap) || DUK_HEAP_IS_PAUSED(heap))) {
-#else
- if (DUK_UNLIKELY(DUK_HEAP_HAS_MARKANDSWEEP_RUNNING(heap))) {
-#endif
- DUK_DDD(DUK_DDDPRINT("refzero handling suppressed when mark-and-sweep running, object: %p", (void *) h));
- return;
- }
-
- switch ((duk_small_int_t) DUK_HEAPHDR_GET_TYPE(h)) {
- case DUK_HTYPE_STRING:
- /*
- * Strings have no internal references but do have "weak"
- * references in the string cache. Also note that strings
- * are not on the heap_allocated list like other heap
- * elements.
- */
-
- duk_heap_strcache_string_remove(heap, (duk_hstring *) h);
- duk_heap_string_remove(heap, (duk_hstring *) h);
- duk_heap_free_heaphdr_raw(heap, h);
- break;
-
- case DUK_HTYPE_OBJECT:
- /*
- * Objects have internal references. Must finalize through
- * the "refzero" work list.
- */
-
- duk_heap_remove_any_from_heap_allocated(heap, h);
- duk__queue_refzero(heap, h);
- duk__refzero_free_pending(thr);
- break;
-
- case DUK_HTYPE_BUFFER:
- /*
- * Buffers have no internal references. However, a dynamic
- * buffer has a separate allocation for the buffer. This is
- * freed by duk_heap_free_heaphdr_raw().
- */
-
- duk_heap_remove_any_from_heap_allocated(heap, h);
- duk_heap_free_heaphdr_raw(heap, h);
- break;
-
- default:
- DUK_D(DUK_DPRINT("invalid heap type in decref: %ld", (long) DUK_HEAPHDR_GET_TYPE(h)));
- DUK_UNREACHABLE();
- }
-}
-
-#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-DUK_INTERNAL void duk_tval_incref(duk_tval *tv) {
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- DUK_ASSERT_DISABLE(h->h_refcount >= 0);
- DUK_HEAPHDR_PREINC_REFCOUNT(h);
- }
-}
-#endif
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_tval_incref_allownull(duk_tval *tv) {
- if (tv == NULL) {
- return;
- }
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- DUK_ASSERT_DISABLE(h->h_refcount >= 0);
- DUK_HEAPHDR_PREINC_REFCOUNT(h);
- }
-}
-#endif
-
-DUK_INTERNAL void duk_tval_decref(duk_hthread *thr, duk_tval *tv) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv != NULL);
-
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- duk_heaphdr_decref(thr, h);
- }
-}
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_tval_decref_allownull(duk_hthread *thr, duk_tval *tv) {
- DUK_ASSERT(thr != NULL);
-
- if (tv == NULL) {
- return;
- }
- if (DUK_TVAL_NEEDS_REFCOUNT_UPDATE(tv)) {
- duk_heaphdr *h = DUK_TVAL_GET_HEAPHDR(tv);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- duk_heaphdr_decref(thr, h);
- }
-}
-#endif
-
-#if !defined(DUK_USE_FAST_REFCOUNT_DEFAULT)
-DUK_INTERNAL void duk_heaphdr_incref(duk_heaphdr *h) {
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- DUK_ASSERT_DISABLE(DUK_HEAPHDR_GET_REFCOUNT(h) >= 0);
-
- DUK_HEAPHDR_PREINC_REFCOUNT(h);
-}
-#endif
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_heaphdr_incref_allownull(duk_heaphdr *h) {
- if (h == NULL) {
- return;
- }
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- DUK_ASSERT_DISABLE(DUK_HEAPHDR_GET_REFCOUNT(h) >= 0);
-
- DUK_HEAPHDR_PREINC_REFCOUNT(h);
-}
-#endif
-
-DUK_INTERNAL void duk_heaphdr_decref(duk_hthread *thr, duk_heaphdr *h) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h) >= 1);
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY(h)) {
- return;
- }
-#endif
- if (DUK_HEAPHDR_PREDEC_REFCOUNT(h) != 0) {
- return;
- }
- duk_heaphdr_refzero(thr, h);
-}
-
-DUK_INTERNAL void duk_heaphdr_decref_allownull(duk_hthread *thr, duk_heaphdr *h) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- if (h == NULL) {
- return;
- }
- DUK_ASSERT(DUK_HEAPHDR_HTYPE_VALID(h));
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY(h)) {
- return;
- }
-#endif
- DUK_ASSERT(DUK_HEAPHDR_GET_REFCOUNT(h) >= 1);
- if (DUK_HEAPHDR_PREDEC_REFCOUNT(h) != 0) {
- return;
- }
- duk_heaphdr_refzero(thr, h);
-}
-
-#else
-
-/* no refcounting */
-
-#endif /* DUK_USE_REFERENCE_COUNTING */
-#line 1 "duk_heap_stringcache.c"
-/*
- * String cache.
- *
- * Provides a cache to optimize indexed string lookups. The cache keeps
- * track of (byte offset, char offset) states for a fixed number of strings.
- * Otherwise we'd need to scan from either end of the string, as we store
- * strings in (extended) UTF-8.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Delete references to given hstring from the heap string cache.
- *
- * String cache references are 'weak': they are not counted towards
- * reference counts, nor serve as roots for mark-and-sweep. When an
- * object is about to be freed, such references need to be removed.
- */
-
-DUK_INTERNAL void duk_heap_strcache_string_remove(duk_heap *heap, duk_hstring *h) {
- duk_small_int_t i;
- for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) {
- duk_strcache *c = heap->strcache + i;
- if (c->h == h) {
- DUK_DD(DUK_DDPRINT("deleting weak strcache reference to hstring %p from heap %p",
- (void *) h, (void *) heap));
- c->h = NULL;
-
- /* XXX: the string shouldn't appear twice, but we now loop to the
- * end anyway; if fixed, add a looping assertion to ensure there
- * is no duplicate.
- */
- }
- }
-}
-
-/*
- * String scanning helpers
- *
- * All bytes other than UTF-8 continuation bytes ([0x80,0xbf]) are
- * considered to contribute a character. This must match how string
- * character length is computed.
- */
-
-DUK_LOCAL const duk_uint8_t *duk__scan_forwards(const duk_uint8_t *p, const duk_uint8_t *q, duk_uint_fast32_t n) {
- while (n > 0) {
- for (;;) {
- p++;
- if (p >= q) {
- return NULL;
- }
- if ((*p & 0xc0) != 0x80) {
- break;
- }
- }
- n--;
- }
- return p;
-}
-
-DUK_LOCAL const duk_uint8_t *duk__scan_backwards(const duk_uint8_t *p, const duk_uint8_t *q, duk_uint_fast32_t n) {
- while (n > 0) {
- for (;;) {
- p--;
- if (p < q) {
- return NULL;
- }
- if ((*p & 0xc0) != 0x80) {
- break;
- }
- }
- n--;
- }
- return p;
-}
-
-/*
- * Convert char offset to byte offset
- *
- * Avoid using the string cache if possible: for ASCII strings byte and
- * char offsets are equal and for short strings direct scanning may be
- * better than using the string cache (which may evict a more important
- * entry).
- *
- * Typing now assumes 32-bit string byte/char offsets (duk_uint_fast32_t).
- * Better typing might be to use duk_size_t.
- */
-
-DUK_INTERNAL duk_uint_fast32_t duk_heap_strcache_offset_char2byte(duk_hthread *thr, duk_hstring *h, duk_uint_fast32_t char_offset) {
- duk_heap *heap;
- duk_strcache *sce;
- duk_uint_fast32_t byte_offset;
- duk_small_int_t i;
- duk_bool_t use_cache;
- duk_uint_fast32_t dist_start, dist_end, dist_sce;
- const duk_uint8_t *p_start;
- const duk_uint8_t *p_end;
- const duk_uint8_t *p_found;
-
- if (char_offset > DUK_HSTRING_GET_CHARLEN(h)) {
- goto error;
- }
-
- /*
- * For ASCII strings, the answer is simple.
- */
-
- if (DUK_HSTRING_IS_ASCII(h)) {
- /* clen == blen -> pure ascii */
- return char_offset;
- }
-
- /*
- * For non-ASCII strings, we need to scan forwards or backwards
- * from some starting point. The starting point may be the start
- * or end of the string, or some cached midpoint in the string
- * cache.
- *
- * For "short" strings we simply scan without checking or updating
- * the cache. For longer strings we check and update the cache as
- * necessary, inserting a new cache entry if none exists.
- */
-
- DUK_DDD(DUK_DDDPRINT("non-ascii string %p, char_offset=%ld, clen=%ld, blen=%ld",
- (void *) h, (long) char_offset,
- (long) DUK_HSTRING_GET_CHARLEN(h),
- (long) DUK_HSTRING_GET_BYTELEN(h)));
-
- heap = thr->heap;
- sce = NULL;
- use_cache = (DUK_HSTRING_GET_CHARLEN(h) > DUK_HEAP_STRINGCACHE_NOCACHE_LIMIT);
-
- if (use_cache) {
-#ifdef DUK_USE_DDDPRINT
- DUK_DDD(DUK_DDDPRINT("stringcache before char2byte (using cache):"));
- for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) {
- duk_strcache *c = heap->strcache + i;
- DUK_DDD(DUK_DDDPRINT(" [%ld] -> h=%p, cidx=%ld, bidx=%ld",
- (long) i, (void *) c->h, (long) c->cidx, (long) c->bidx));
- }
-#endif
-
- for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) {
- duk_strcache *c = heap->strcache + i;
-
- if (c->h == h) {
- sce = c;
- break;
- }
- }
- }
-
- /*
- * Scan from shortest distance:
- * - start of string
- * - end of string
- * - cache entry (if exists)
- */
-
- DUK_ASSERT(DUK_HSTRING_GET_CHARLEN(h) >= char_offset);
- dist_start = char_offset;
- dist_end = DUK_HSTRING_GET_CHARLEN(h) - char_offset;
- dist_sce = 0; DUK_UNREF(dist_sce); /* initialize for debug prints, needed if sce==NULL */
-
- p_start = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h);
- p_end = (const duk_uint8_t *) (p_start + DUK_HSTRING_GET_BYTELEN(h));
- p_found = NULL;
-
- if (sce) {
- if (char_offset >= sce->cidx) {
- dist_sce = char_offset - sce->cidx;
- if ((dist_sce <= dist_start) && (dist_sce <= dist_end)) {
- DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, "
- "dist_start=%ld, dist_end=%ld, dist_sce=%ld => "
- "scan forwards from sce",
- (long) use_cache, (void *) (sce ? sce->h : NULL),
- (sce ? (long) sce->cidx : (long) -1),
- (sce ? (long) sce->bidx : (long) -1),
- (long) dist_start, (long) dist_end, (long) dist_sce));
-
- p_found = duk__scan_forwards(p_start + sce->bidx,
- p_end,
- dist_sce);
- goto scan_done;
- }
- } else {
- dist_sce = sce->cidx - char_offset;
- if ((dist_sce <= dist_start) && (dist_sce <= dist_end)) {
- DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, "
- "dist_start=%ld, dist_end=%ld, dist_sce=%ld => "
- "scan backwards from sce",
- (long) use_cache, (void *) (sce ? sce->h : NULL),
- (sce ? (long) sce->cidx : (long) -1),
- (sce ? (long) sce->bidx : (long) -1),
- (long) dist_start, (long) dist_end, (long) dist_sce));
-
- p_found = duk__scan_backwards(p_start + sce->bidx,
- p_start,
- dist_sce);
- goto scan_done;
- }
- }
- }
-
- /* no sce, or sce scan not best */
-
- if (dist_start <= dist_end) {
- DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, "
- "dist_start=%ld, dist_end=%ld, dist_sce=%ld => "
- "scan forwards from string start",
- (long) use_cache, (void *) (sce ? sce->h : NULL),
- (sce ? (long) sce->cidx : (long) -1),
- (sce ? (long) sce->bidx : (long) -1),
- (long) dist_start, (long) dist_end, (long) dist_sce));
-
- p_found = duk__scan_forwards(p_start,
- p_end,
- dist_start);
- } else {
- DUK_DDD(DUK_DDDPRINT("non-ascii string, use_cache=%ld, sce=%p:%ld:%ld, "
- "dist_start=%ld, dist_end=%ld, dist_sce=%ld => "
- "scan backwards from string end",
- (long) use_cache, (void *) (sce ? sce->h : NULL),
- (sce ? (long) sce->cidx : (long) -1),
- (sce ? (long) sce->bidx : (long) -1),
- (long) dist_start, (long) dist_end, (long) dist_sce));
-
- p_found = duk__scan_backwards(p_end,
- p_start,
- dist_end);
- }
-
- scan_done:
-
- if (!p_found) {
- /* Scan error: this shouldn't normally happen; it could happen if
- * string is not valid UTF-8 data, and clen/blen are not consistent
- * with the scanning algorithm.
- */
- goto error;
- }
-
- DUK_ASSERT(p_found >= p_start);
- DUK_ASSERT(p_found <= p_end); /* may be equal */
- byte_offset = (duk_uint32_t) (p_found - p_start);
-
- DUK_DDD(DUK_DDDPRINT("-> string %p, cidx %ld -> bidx %ld",
- (void *) h, (long) char_offset, (long) byte_offset));
-
- /*
- * Update cache entry (allocating if necessary), and move the
- * cache entry to the first place (in an "LRU" policy).
- */
-
- if (use_cache) {
- /* update entry, allocating if necessary */
- if (!sce) {
- sce = heap->strcache + DUK_HEAP_STRCACHE_SIZE - 1; /* take last entry */
- sce->h = h;
- }
- DUK_ASSERT(sce != NULL);
- sce->bidx = (duk_uint32_t) (p_found - p_start);
- sce->cidx = (duk_uint32_t) char_offset;
-
- /* LRU: move our entry to first */
- if (sce > &heap->strcache[0]) {
- /*
- * A C
- * B A
- * C <- sce ==> B
- * D D
- */
- duk_strcache tmp;
-
- tmp = *sce;
- DUK_MEMMOVE((void *) (&heap->strcache[1]),
- (const void *) (&heap->strcache[0]),
- (size_t) (((char *) sce) - ((char *) &heap->strcache[0])));
- heap->strcache[0] = tmp;
-
- /* 'sce' points to the wrong entry here, but is no longer used */
- }
-#ifdef DUK_USE_DDDPRINT
- DUK_DDD(DUK_DDDPRINT("stringcache after char2byte (using cache):"));
- for (i = 0; i < DUK_HEAP_STRCACHE_SIZE; i++) {
- duk_strcache *c = heap->strcache + i;
- DUK_DDD(DUK_DDDPRINT(" [%ld] -> h=%p, cidx=%ld, bidx=%ld",
- (long) i, (void *) c->h, (long) c->cidx, (long) c->bidx));
- }
-#endif
- }
-
- return byte_offset;
-
- error:
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return 0;
-}
-#line 1 "duk_heap_stringtable.c"
-/*
- * Heap stringtable handling, string interning.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-#define DUK__HASH_INITIAL(hash,h_size) DUK_STRTAB_HASH_INITIAL((hash),(h_size))
-#define DUK__HASH_PROBE_STEP(hash) DUK_STRTAB_HASH_PROBE_STEP((hash))
-#define DUK__DELETED_MARKER(heap) DUK_STRTAB_DELETED_MARKER((heap))
-#endif
-
-/*
- * Create a hstring and insert into the heap. The created object
- * is directly garbage collectable with reference count zero.
- *
- * The caller must place the interned string into the stringtable
- * immediately (without chance of a longjmp); otherwise the string
- * is lost.
- */
-
-DUK_LOCAL
-duk_hstring *duk__alloc_init_hstring(duk_heap *heap,
- const duk_uint8_t *str,
- duk_uint32_t blen,
- duk_uint32_t strhash,
- const duk_uint8_t *extdata) {
- duk_hstring *res = NULL;
- duk_uint8_t *data;
- duk_size_t alloc_size;
- duk_uarridx_t dummy;
- duk_uint32_t clen;
-
-#if defined(DUK_USE_STRLEN16)
- /* If blen <= 0xffffUL, clen is also guaranteed to be <= 0xffffUL. */
- if (blen > 0xffffUL) {
- DUK_D(DUK_DPRINT("16-bit string blen/clen active and blen over 16 bits, reject intern"));
- return NULL;
- }
-#endif
-
- if (extdata) {
- alloc_size = (duk_size_t) sizeof(duk_hstring_external);
- res = (duk_hstring *) DUK_ALLOC(heap, alloc_size);
- if (!res) {
- goto alloc_error;
- }
- DUK_MEMZERO(res, sizeof(duk_hstring_external));
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- DUK_HEAPHDR_STRING_INIT_NULLS(&res->hdr);
-#endif
- DUK_HEAPHDR_SET_TYPE_AND_FLAGS(&res->hdr, DUK_HTYPE_STRING, DUK_HSTRING_FLAG_EXTDATA);
-
- ((duk_hstring_external *) res)->extdata = extdata;
- } else {
- /* NUL terminate for convenient C access */
- alloc_size = (duk_size_t) (sizeof(duk_hstring) + blen + 1);
- res = (duk_hstring *) DUK_ALLOC(heap, alloc_size);
- if (!res) {
- goto alloc_error;
- }
- DUK_MEMZERO(res, sizeof(duk_hstring));
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- DUK_HEAPHDR_STRING_INIT_NULLS(&res->hdr);
-#endif
- DUK_HEAPHDR_SET_TYPE_AND_FLAGS(&res->hdr, DUK_HTYPE_STRING, 0);
-
- data = (duk_uint8_t *) (res + 1);
- DUK_MEMCPY(data, str, blen);
- data[blen] = (duk_uint8_t) 0;
- }
-
- DUK_ASSERT(!DUK_HSTRING_HAS_ARRIDX(res));
- if (duk_js_to_arrayindex_raw_string(str, blen, &dummy)) {
- DUK_HSTRING_SET_ARRIDX(res);
- }
-
- /* All strings beginning with 0xff are treated as "internal",
- * even strings interned by the user. This allows user code to
- * create internal properties too, and makes behavior consistent
- * in case user code happens to use a string also used by Duktape
- * (such as string has already been interned and has the 'internal'
- * flag set).
- */
- DUK_ASSERT(!DUK_HSTRING_HAS_INTERNAL(res));
- if (blen > 0 && str[0] == (duk_uint8_t) 0xff) {
- DUK_HSTRING_SET_INTERNAL(res);
- }
-
- DUK_HSTRING_SET_HASH(res, strhash);
- DUK_HSTRING_SET_BYTELEN(res, blen);
-
- clen = (duk_uint32_t) duk_unicode_unvalidated_utf8_length(str, (duk_size_t) blen);
- DUK_ASSERT(clen <= blen);
-#if defined(DUK_USE_HSTRING_CLEN)
- DUK_HSTRING_SET_CHARLEN(res, clen);
-#endif
-
- /* Using an explicit 'ASCII' flag has larger footprint (one call site
- * only) but is quite useful for the case when there's no explicit
- * 'clen' in duk_hstring.
- */
- DUK_ASSERT(!DUK_HSTRING_HAS_ASCII(res));
- if (clen == blen) {
- DUK_HSTRING_SET_ASCII(res);
- }
-
- DUK_DDD(DUK_DDDPRINT("interned string, hash=0x%08lx, blen=%ld, clen=%ld, has_arridx=%ld, has_extdata=%ld",
- (unsigned long) DUK_HSTRING_GET_HASH(res),
- (long) DUK_HSTRING_GET_BYTELEN(res),
- (long) DUK_HSTRING_GET_CHARLEN(res),
- (long) (DUK_HSTRING_HAS_ARRIDX(res) ? 1 : 0),
- (long) (DUK_HSTRING_HAS_EXTDATA(res) ? 1 : 0)));
-
- return res;
-
- alloc_error:
- DUK_FREE(heap, res);
- return NULL;
-}
-
-/*
- * String table algorithm: fixed size string table with array chaining
- *
- * The top level string table has a fixed size, with each slot holding
- * either NULL, string pointer, or pointer to a separately allocated
- * string pointer list.
- *
- * This is good for low memory environments using a pool allocator: the
- * top level allocation has a fixed size and the pointer lists have quite
- * small allocation size, which further matches the typical pool sizes
- * needed by objects, strings, property tables, etc.
- */
-
-#if defined(DUK_USE_STRTAB_CHAIN)
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL duk_bool_t duk__insert_hstring_chain(duk_heap *heap, duk_hstring *h) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_uint16_t *lst;
- duk_uint16_t *new_lst;
- duk_size_t i, n;
- duk_uint16_t null16 = heap->heapptr_null16;
- duk_uint16_t h16 = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- slotidx = DUK_HSTRING_GET_HASH(h) % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- if (e->u.str16 == null16) {
- e->u.str16 = h16;
- } else {
- /* Now two entries in the same slot, alloc list */
- lst = (duk_uint16_t *) DUK_ALLOC(heap, sizeof(duk_uint16_t) * 2);
- if (lst == NULL) {
- return 1; /* fail */
- }
- lst[0] = e->u.str16;
- lst[1] = h16;
- e->u.strlist16 = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) lst);
- e->listlen = 2;
- }
- } else {
- DUK_ASSERT(e->u.strlist16 != null16);
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
- DUK_ASSERT(lst != NULL);
- for (i = 0, n = e->listlen; i < n; i++) {
- if (lst[i] == null16) {
- lst[i] = h16;
- return 0;
- }
- }
-
- if (e->listlen + 1 == 0) {
- /* Overflow, relevant mainly when listlen is 16 bits. */
- return 1; /* fail */
- }
-
- new_lst = (duk_uint16_t *) DUK_REALLOC(heap, lst, sizeof(duk_uint16_t) * (e->listlen + 1));
- if (new_lst == NULL) {
- return 1; /* fail */
- }
- new_lst[e->listlen++] = h16;
- e->u.strlist16 = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) new_lst);
- }
- return 0;
-}
-#else /* DUK_USE_HEAPPTR16 */
-DUK_LOCAL duk_bool_t duk__insert_hstring_chain(duk_heap *heap, duk_hstring *h) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_hstring **lst;
- duk_hstring **new_lst;
- duk_size_t i, n;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- slotidx = DUK_HSTRING_GET_HASH(h) % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- if (e->u.str == NULL) {
- e->u.str = h;
- } else {
- /* Now two entries in the same slot, alloc list */
- lst = (duk_hstring **) DUK_ALLOC(heap, sizeof(duk_hstring *) * 2);
- if (lst == NULL) {
- return 1; /* fail */
- }
- lst[0] = e->u.str;
- lst[1] = h;
- e->u.strlist = lst;
- e->listlen = 2;
- }
- } else {
- DUK_ASSERT(e->u.strlist != NULL);
- lst = e->u.strlist;
- for (i = 0, n = e->listlen; i < n; i++) {
- if (lst[i] == NULL) {
- lst[i] = h;
- return 0;
- }
- }
-
- if (e->listlen + 1 == 0) {
- /* Overflow, relevant mainly when listlen is 16 bits. */
- return 1; /* fail */
- }
-
- new_lst = (duk_hstring **) DUK_REALLOC(heap, e->u.strlist, sizeof(duk_hstring *) * (e->listlen + 1));
- if (new_lst == NULL) {
- return 1; /* fail */
- }
- new_lst[e->listlen++] = h;
- e->u.strlist = new_lst;
- }
- return 0;
-}
-#endif /* DUK_USE_HEAPPTR16 */
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL duk_hstring *duk__find_matching_string_chain(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_uint16_t *lst;
- duk_size_t i, n;
- duk_uint16_t null16 = heap->heapptr_null16;
-
- DUK_ASSERT(heap != NULL);
-
- slotidx = strhash % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- if (e->u.str16 != null16) {
- duk_hstring *h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.str16);
- DUK_ASSERT(h != NULL);
- if (DUK_HSTRING_GET_BYTELEN(h) == blen &&
- DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(h), (size_t) blen) == 0) {
- return h;
- }
- }
- } else {
- DUK_ASSERT(e->u.strlist16 != null16);
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
- DUK_ASSERT(lst != NULL);
- for (i = 0, n = e->listlen; i < n; i++) {
- if (lst[i] != null16) {
- duk_hstring *h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, lst[i]);
- DUK_ASSERT(h != NULL);
- if (DUK_HSTRING_GET_BYTELEN(h) == blen &&
- DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(h), (size_t) blen) == 0) {
- return h;
- }
- }
- }
- }
-
- return NULL;
-}
-#else /* DUK_USE_HEAPPTR16 */
-DUK_LOCAL duk_hstring *duk__find_matching_string_chain(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_hstring **lst;
- duk_size_t i, n;
-
- DUK_ASSERT(heap != NULL);
-
- slotidx = strhash % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- if (e->u.str != NULL &&
- DUK_HSTRING_GET_BYTELEN(e->u.str) == blen &&
- DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(e->u.str), (size_t) blen) == 0) {
- return e->u.str;
- }
- } else {
- DUK_ASSERT(e->u.strlist != NULL);
- lst = e->u.strlist;
- for (i = 0, n = e->listlen; i < n; i++) {
- if (lst[i] != NULL &&
- DUK_HSTRING_GET_BYTELEN(lst[i]) == blen &&
- DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(lst[i]), (size_t) blen) == 0) {
- return lst[i];
- }
- }
- }
-
- return NULL;
-}
-#endif /* DUK_USE_HEAPPTR16 */
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL void duk__remove_matching_hstring_chain(duk_heap *heap, duk_hstring *h) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_uint16_t *lst;
- duk_size_t i, n;
- duk_uint16_t h16;
- duk_uint16_t null16 = heap->heapptr_null16;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- slotidx = DUK_HSTRING_GET_HASH(h) % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- DUK_ASSERT(h != NULL);
- h16 = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- if (e->u.str16 == h16) {
- e->u.str16 = null16;
- return;
- }
- } else {
- DUK_ASSERT(e->u.strlist16 != null16);
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
- DUK_ASSERT(lst != NULL);
- for (i = 0, n = e->listlen; i < n; i++) {
- if (lst[i] == h16) {
- lst[i] = null16;
- return;
- }
- }
- }
-
- DUK_D(DUK_DPRINT("failed to find string that should be in stringtable"));
- DUK_UNREACHABLE();
- return;
-}
-#else /* DUK_USE_HEAPPTR16 */
-DUK_LOCAL void duk__remove_matching_hstring_chain(duk_heap *heap, duk_hstring *h) {
- duk_small_uint_t slotidx;
- duk_strtab_entry *e;
- duk_hstring **lst;
- duk_size_t i, n;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(h != NULL);
-
- slotidx = DUK_HSTRING_GET_HASH(h) % DUK_STRTAB_CHAIN_SIZE;
- DUK_ASSERT(slotidx < DUK_STRTAB_CHAIN_SIZE);
-
- e = heap->strtable + slotidx;
- if (e->listlen == 0) {
- DUK_ASSERT(h != NULL);
- if (e->u.str == h) {
- e->u.str = NULL;
- return;
- }
- } else {
- DUK_ASSERT(e->u.strlist != NULL);
- lst = e->u.strlist;
- for (i = 0, n = e->listlen; i < n; i++) {
- DUK_ASSERT(h != NULL);
- if (lst[i] == h) {
- lst[i] = NULL;
- return;
- }
- }
- }
-
- DUK_D(DUK_DPRINT("failed to find string that should be in stringtable"));
- DUK_UNREACHABLE();
- return;
-}
-#endif /* DUK_USE_HEAPPTR16 */
-
-#if defined(DUK_USE_DEBUG)
-DUK_INTERNAL void duk_heap_dump_strtab(duk_heap *heap) {
- duk_strtab_entry *e;
- duk_small_uint_t i;
- duk_size_t j, n, used;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *lst;
- duk_uint16_t null16 = heap->heapptr_null16;
-#else
- duk_hstring **lst;
-#endif
-
- DUK_ASSERT(heap != NULL);
-
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
- e = heap->strtable + i;
-
- if (e->listlen == 0) {
-#if defined(DUK_USE_HEAPPTR16)
- DUK_DD(DUK_DDPRINT("[%03d] -> plain %d", (int) i, (int) (e->u.str16 != null16 ? 1 : 0)));
-#else
- DUK_DD(DUK_DDPRINT("[%03d] -> plain %d", (int) i, (int) (e->u.str ? 1 : 0)));
-#endif
- } else {
- used = 0;
-#if defined(DUK_USE_HEAPPTR16)
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
-#else
- lst = e->u.strlist;
-#endif
- DUK_ASSERT(lst != NULL);
- for (j = 0, n = e->listlen; j < n; j++) {
-#if defined(DUK_USE_HEAPPTR16)
- if (lst[j] != null16) {
-#else
- if (lst[j] != NULL) {
-#endif
- used++;
- }
- }
- DUK_DD(DUK_DDPRINT("[%03d] -> array %d/%d", (int) i, (int) used, (int) e->listlen));
- }
- }
-}
-#endif /* DUK_USE_DEBUG */
-
-#endif /* DUK_USE_STRTAB_CHAIN */
-
-/*
- * String table algorithm: closed hashing with a probe sequence
- *
- * This is the default algorithm and works fine for environments with
- * minimal memory constraints.
- */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-
-/* Count actually used (non-NULL, non-DELETED) entries. */
-DUK_LOCAL duk_int_t duk__count_used_probe(duk_heap *heap) {
- duk_int_t res = 0;
- duk_uint_fast32_t i, n;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t null16 = heap->heapptr_null16;
- duk_uint16_t deleted16 = heap->heapptr_deleted16;
-#endif
-
- n = (duk_uint_fast32_t) heap->st_size;
- for (i = 0; i < n; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- if (heap->strtable16[i] != null16 && heap->strtable16[i] != deleted16) {
-#else
- if (heap->strtable[i] != NULL && heap->strtable[i] != DUK__DELETED_MARKER(heap)) {
-#endif
- res++;
- }
- }
- return res;
-}
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL void duk__insert_hstring_probe(duk_heap *heap, duk_uint16_t *entries16, duk_uint32_t size, duk_uint32_t *p_used, duk_hstring *h) {
-#else
-DUK_LOCAL void duk__insert_hstring_probe(duk_heap *heap, duk_hstring **entries, duk_uint32_t size, duk_uint32_t *p_used, duk_hstring *h) {
-#endif
- duk_uint32_t i;
- duk_uint32_t step;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t null16 = heap->heapptr_null16;
- duk_uint16_t deleted16 = heap->heapptr_deleted16;
-#endif
-
- DUK_ASSERT(size > 0);
-
- i = DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(h), size);
- step = DUK__HASH_PROBE_STEP(DUK_HSTRING_GET_HASH(h));
- for (;;) {
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t e16 = entries16[i];
-#else
- duk_hstring *e = entries[i];
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- /* XXX: could check for e16 == 0 because NULL is guaranteed to
- * encode to zero.
- */
- if (e16 == null16) {
-#else
- if (e == NULL) {
-#endif
- DUK_DDD(DUK_DDDPRINT("insert hit (null): %ld", (long) i));
-#if defined(DUK_USE_HEAPPTR16)
- entries16[i] = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-#else
- entries[i] = h;
-#endif
- (*p_used)++;
- break;
-#if defined(DUK_USE_HEAPPTR16)
- } else if (e16 == deleted16) {
-#else
- } else if (e == DUK__DELETED_MARKER(heap)) {
-#endif
- /* st_used remains the same, DELETED is counted as used */
- DUK_DDD(DUK_DDDPRINT("insert hit (deleted): %ld", (long) i));
-#if defined(DUK_USE_HEAPPTR16)
- entries16[i] = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-#else
- entries[i] = h;
-#endif
- break;
- }
- DUK_DDD(DUK_DDDPRINT("insert miss: %ld", (long) i));
- i = (i + step) % size;
-
- /* looping should never happen */
- DUK_ASSERT(i != DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(h), size));
- }
-}
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL duk_hstring *duk__find_matching_string_probe(duk_heap *heap, duk_uint16_t *entries16, duk_uint32_t size, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) {
-#else
-DUK_LOCAL duk_hstring *duk__find_matching_string_probe(duk_heap *heap, duk_hstring **entries, duk_uint32_t size, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) {
-#endif
- duk_uint32_t i;
- duk_uint32_t step;
-
- DUK_ASSERT(size > 0);
-
- i = DUK__HASH_INITIAL(strhash, size);
- step = DUK__HASH_PROBE_STEP(strhash);
- for (;;) {
- duk_hstring *e;
-#if defined(DUK_USE_HEAPPTR16)
- e = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, entries16[i]);
-#else
- e = entries[i];
-#endif
-
- if (!e) {
- return NULL;
- }
- if (e != DUK__DELETED_MARKER(heap) && DUK_HSTRING_GET_BYTELEN(e) == blen) {
- if (DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(e), (size_t) blen) == 0) {
- DUK_DDD(DUK_DDDPRINT("find matching hit: %ld (step %ld, size %ld)",
- (long) i, (long) step, (long) size));
- return e;
- }
- }
- DUK_DDD(DUK_DDDPRINT("find matching miss: %ld (step %ld, size %ld)",
- (long) i, (long) step, (long) size));
- i = (i + step) % size;
-
- /* looping should never happen */
- DUK_ASSERT(i != DUK__HASH_INITIAL(strhash, size));
- }
- DUK_UNREACHABLE();
-}
-
-#if defined(DUK_USE_HEAPPTR16)
-DUK_LOCAL void duk__remove_matching_hstring_probe(duk_heap *heap, duk_uint16_t *entries16, duk_uint32_t size, duk_hstring *h) {
-#else
-DUK_LOCAL void duk__remove_matching_hstring_probe(duk_heap *heap, duk_hstring **entries, duk_uint32_t size, duk_hstring *h) {
-#endif
- duk_uint32_t i;
- duk_uint32_t step;
- duk_uint32_t hash;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t null16 = heap->heapptr_null16;
- duk_uint16_t h16 = DUK_USE_HEAPPTR_ENC16(heap->heap_udata, (void *) h);
-#endif
-
- DUK_ASSERT(size > 0);
-
- hash = DUK_HSTRING_GET_HASH(h);
- i = DUK__HASH_INITIAL(hash, size);
- step = DUK__HASH_PROBE_STEP(hash);
- for (;;) {
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t e16 = entries16[i];
-#else
- duk_hstring *e = entries[i];
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- if (e16 == null16) {
-#else
- if (!e) {
-#endif
- DUK_UNREACHABLE();
- break;
- }
-#if defined(DUK_USE_HEAPPTR16)
- if (e16 == h16) {
-#else
- if (e == h) {
-#endif
- /* st_used remains the same, DELETED is counted as used */
- DUK_DDD(DUK_DDDPRINT("free matching hit: %ld", (long) i));
-#if defined(DUK_USE_HEAPPTR16)
- entries16[i] = heap->heapptr_deleted16;
-#else
- entries[i] = DUK__DELETED_MARKER(heap);
-#endif
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("free matching miss: %ld", (long) i));
- i = (i + step) % size;
-
- /* looping should never happen */
- DUK_ASSERT(i != DUK__HASH_INITIAL(hash, size));
- }
-}
-
-DUK_LOCAL duk_bool_t duk__resize_strtab_raw_probe(duk_heap *heap, duk_uint32_t new_size) {
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk_small_uint_t prev_mark_and_sweep_base_flags;
-#endif
-#ifdef DUK_USE_DEBUG
- duk_uint32_t old_used = heap->st_used;
-#endif
- duk_uint32_t old_size = heap->st_size;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *old_entries = heap->strtable16;
- duk_uint16_t *new_entries = NULL;
-#else
- duk_hstring **old_entries = heap->strtable;
- duk_hstring **new_entries = NULL;
-#endif
- duk_uint32_t new_used = 0;
- duk_uint32_t i;
-
-#ifdef DUK_USE_DEBUG
- DUK_UNREF(old_used); /* unused with some debug level combinations */
-#endif
-
-#ifdef DUK_USE_DDDPRINT
- DUK_DDD(DUK_DDDPRINT("attempt to resize stringtable: %ld entries, %ld bytes, %ld used, %ld%% load -> %ld entries, %ld bytes, %ld used, %ld%% load",
- (long) old_size, (long) (sizeof(duk_hstring *) * old_size), (long) old_used,
- (long) (((double) old_used) / ((double) old_size) * 100.0),
- (long) new_size, (long) (sizeof(duk_hstring *) * new_size), (long) duk__count_used_probe(heap),
- (long) (((double) duk__count_used_probe(heap)) / ((double) new_size) * 100.0)));
-#endif
-
- DUK_ASSERT(new_size > (duk_uint32_t) duk__count_used_probe(heap)); /* required for rehash to succeed, equality not that useful */
- DUK_ASSERT(old_entries);
-#ifdef DUK_USE_MARK_AND_SWEEP
- DUK_ASSERT((heap->mark_and_sweep_base_flags & DUK_MS_FLAG_NO_STRINGTABLE_RESIZE) == 0);
-#endif
-
- /*
- * The attempt to allocate may cause a GC. Such a GC must not attempt to resize
- * the stringtable (though it can be swept); finalizer execution and object
- * compaction must also be postponed to avoid the pressure to add strings to the
- * string table.
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- prev_mark_and_sweep_base_flags = heap->mark_and_sweep_base_flags;
- heap->mark_and_sweep_base_flags |= \
- DUK_MS_FLAG_NO_STRINGTABLE_RESIZE | /* avoid recursive call here */
- DUK_MS_FLAG_NO_FINALIZERS | /* avoid pressure to add/remove strings */
- DUK_MS_FLAG_NO_OBJECT_COMPACTION; /* avoid array abandoning which interns strings */
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- new_entries = (duk_uint16_t *) DUK_ALLOC(heap, sizeof(duk_uint16_t) * new_size);
-#else
- new_entries = (duk_hstring **) DUK_ALLOC(heap, sizeof(duk_hstring *) * new_size);
-#endif
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- heap->mark_and_sweep_base_flags = prev_mark_and_sweep_base_flags;
-#endif
-
- if (!new_entries) {
- goto resize_error;
- }
-
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- for (i = 0; i < new_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- new_entries[i] = heap->heapptr_null16;
-#else
- new_entries[i] = NULL;
-#endif
- }
-#else
-#if defined(DUK_USE_HEAPPTR16)
- /* Relies on NULL encoding to zero. */
- DUK_MEMZERO(new_entries, sizeof(duk_uint16_t) * new_size);
-#else
- DUK_MEMZERO(new_entries, sizeof(duk_hstring *) * new_size);
-#endif
-#endif
-
- /* Because new_size > duk__count_used_probe(heap), guaranteed to work */
- for (i = 0; i < old_size; i++) {
- duk_hstring *e;
-
-#if defined(DUK_USE_HEAPPTR16)
- e = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, old_entries[i]);
-#else
- e = old_entries[i];
-#endif
- if (e == NULL || e == DUK__DELETED_MARKER(heap)) {
- continue;
- }
- /* checking for DUK__DELETED_MARKER is not necessary here, but helper does it now */
- duk__insert_hstring_probe(heap, new_entries, new_size, &new_used, e);
- }
-
-#ifdef DUK_USE_DDPRINT
- DUK_DD(DUK_DDPRINT("resized stringtable: %ld entries, %ld bytes, %ld used, %ld%% load -> %ld entries, %ld bytes, %ld used, %ld%% load",
- (long) old_size, (long) (sizeof(duk_hstring *) * old_size), (long) old_used,
- (long) (((double) old_used) / ((double) old_size) * 100.0),
- (long) new_size, (long) (sizeof(duk_hstring *) * new_size), (long) new_used,
- (long) (((double) new_used) / ((double) new_size) * 100.0)));
-#endif
-
-#if defined(DUK_USE_HEAPPTR16)
- DUK_FREE(heap, heap->strtable16);
- heap->strtable16 = new_entries;
-#else
- DUK_FREE(heap, heap->strtable);
- heap->strtable = new_entries;
-#endif
- heap->st_size = new_size;
- heap->st_used = new_used; /* may be less, since DELETED entries are NULLed by rehash */
-
- return 0; /* OK */
-
- resize_error:
- DUK_FREE(heap, new_entries);
- return 1; /* FAIL */
-}
-
-DUK_LOCAL duk_bool_t duk__resize_strtab_probe(duk_heap *heap) {
- duk_uint32_t new_size;
- duk_bool_t ret;
-
- new_size = (duk_uint32_t) duk__count_used_probe(heap);
- if (new_size >= 0x80000000UL) {
- new_size = DUK_STRTAB_HIGHEST_32BIT_PRIME;
- } else {
- new_size = duk_util_get_hash_prime(DUK_STRTAB_GROW_ST_SIZE(new_size));
- new_size = duk_util_get_hash_prime(new_size);
- }
- DUK_ASSERT(new_size > 0);
-
- /* rehash even if old and new sizes are the same to get rid of
- * DELETED entries.
- */
-
- ret = duk__resize_strtab_raw_probe(heap, new_size);
-
- return ret;
-}
-
-DUK_LOCAL duk_bool_t duk__recheck_strtab_size_probe(duk_heap *heap, duk_uint32_t new_used) {
- duk_uint32_t new_free;
- duk_uint32_t tmp1;
- duk_uint32_t tmp2;
-
- DUK_ASSERT(new_used <= heap->st_size); /* grow by at most one */
- new_free = heap->st_size - new_used; /* unsigned intentionally */
-
- /* new_free / size <= 1 / DIV <=> new_free <= size / DIV */
- /* new_used / size <= 1 / DIV <=> new_used <= size / DIV */
-
- tmp1 = heap->st_size / DUK_STRTAB_MIN_FREE_DIVISOR;
- tmp2 = heap->st_size / DUK_STRTAB_MIN_USED_DIVISOR;
-
- if (new_free <= tmp1 || new_used <= tmp2) {
- /* load factor too low or high, count actually used entries and resize */
- return duk__resize_strtab_probe(heap);
- } else {
- return 0; /* OK */
- }
-}
-
-#if defined(DUK_USE_DEBUG)
-DUK_INTERNAL void duk_heap_dump_strtab(duk_heap *heap) {
- duk_uint32_t i;
- duk_hstring *h;
-
- DUK_ASSERT(heap != NULL);
-#if defined(DUK_USE_HEAPPTR16)
- DUK_ASSERT(heap->strtable16 != NULL);
-#else
- DUK_ASSERT(heap->strtable != NULL);
-#endif
- DUK_UNREF(h);
-
- for (i = 0; i < heap->st_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->strtable16[i]);
-#else
- h = heap->strtable[i];
-#endif
-
- DUK_DD(DUK_DDPRINT("[%03d] -> %p", (int) i, (void *) h));
- }
-}
-#endif /* DUK_USE_DEBUG */
-
-#endif /* DUK_USE_STRTAB_PROBE */
-
-/*
- * Raw intern and lookup
- */
-
-DUK_LOCAL duk_hstring *duk__do_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t strhash) {
- duk_hstring *res;
- const duk_uint8_t *extdata;
-
-#if defined(DUK_USE_STRTAB_PROBE)
- if (duk__recheck_strtab_size_probe(heap, heap->st_used + 1)) {
- return NULL;
- }
-#endif
-
- /* For manual testing only. */
-#if 0
- {
- duk_size_t i;
- DUK_PRINTF("INTERN: \"");
- for (i = 0; i < blen; i++) {
- duk_uint8_t x = str[i];
- if (x >= 0x20 && x <= 0x7e && x != '"' && x != '\\') {
- DUK_PRINTF("%c", (int) x); /* char: use int cast */
- } else {
- DUK_PRINTF("\\x%02lx", (long) x);
- }
- }
- DUK_PRINTF("\"\n");
- }
-#endif
-
-#if defined(DUK_USE_HSTRING_EXTDATA) && defined(DUK_USE_EXTSTR_INTERN_CHECK)
- extdata = (const duk_uint8_t *) DUK_USE_EXTSTR_INTERN_CHECK(heap->heap_udata, (void *) DUK_LOSE_CONST(str), (duk_size_t) blen);
-#else
- extdata = (const duk_uint8_t *) NULL;
-#endif
- res = duk__alloc_init_hstring(heap, str, blen, strhash, extdata);
- if (!res) {
- return NULL;
- }
-
-#if defined(DUK_USE_STRTAB_CHAIN)
- if (duk__insert_hstring_chain(heap, res)) {
- /* failed */
- DUK_FREE(heap, res);
- return NULL;
- }
-#elif defined(DUK_USE_STRTAB_PROBE)
- /* guaranteed to succeed */
- duk__insert_hstring_probe(heap,
-#if defined(DUK_USE_HEAPPTR16)
- heap->strtable16,
-#else
- heap->strtable,
-#endif
- heap->st_size,
- &heap->st_used,
- res);
-#else
-#error internal error, invalid strtab options
-#endif
-
- /* Note: hstring is in heap but has refcount zero and is not strongly reachable.
- * Caller should increase refcount and make the hstring reachable before any
- * operations which require allocation (and possible gc).
- */
-
- return res;
-}
-
-DUK_LOCAL duk_hstring *duk__do_lookup(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen, duk_uint32_t *out_strhash) {
- duk_hstring *res;
-
- DUK_ASSERT(out_strhash);
-
- *out_strhash = duk_heap_hashstring(heap, str, (duk_size_t) blen);
-
-#if defined(DUK_USE_ROM_STRINGS)
- {
- duk_small_uint_t i;
- /* XXX: This is VERY inefficient now, and should be e.g. a
- * binary search or perfect hash, to be fixed.
- */
- for (i = 0; i < (duk_small_uint_t) (sizeof(duk_rom_strings) / sizeof(duk_hstring *)); i++) {
- duk_hstring *romstr;
- romstr = (duk_hstring *) DUK_LOSE_CONST(duk_rom_strings[i]);
- if (blen == DUK_HSTRING_GET_BYTELEN(romstr) &&
- DUK_MEMCMP((const void *) str, (const void *) DUK_HSTRING_GET_DATA(romstr), blen) == 0) {
- DUK_DD(DUK_DDPRINT("intern check: rom string: %!O, computed hash 0x%08lx, rom hash 0x%08lx",
- romstr, (unsigned long) *out_strhash, (unsigned long) DUK_HSTRING_GET_HASH(romstr)));
- DUK_ASSERT(*out_strhash == DUK_HSTRING_GET_HASH(romstr));
- *out_strhash = DUK_HSTRING_GET_HASH(romstr);
- return romstr;
- }
- }
- }
-#endif /* DUK_USE_ROM_STRINGS */
-
-#if defined(DUK_USE_STRTAB_CHAIN)
- res = duk__find_matching_string_chain(heap, str, blen, *out_strhash);
-#elif defined(DUK_USE_STRTAB_PROBE)
- res = duk__find_matching_string_probe(heap,
-#if defined(DUK_USE_HEAPPTR16)
- heap->strtable16,
-#else
- heap->strtable,
-#endif
- heap->st_size,
- str,
- blen,
- *out_strhash);
-#else
-#error internal error, invalid strtab options
-#endif
-
- return res;
-}
-
-/*
- * Exposed calls
- */
-
-#if 0 /*unused*/
-DUK_INTERNAL duk_hstring *duk_heap_string_lookup(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen) {
- duk_uint32_t strhash; /* dummy */
- return duk__do_lookup(heap, str, blen, &strhash);
-}
-#endif
-
-DUK_INTERNAL duk_hstring *duk_heap_string_intern(duk_heap *heap, const duk_uint8_t *str, duk_uint32_t blen) {
- duk_hstring *res;
- duk_uint32_t strhash;
-
- /* caller is responsible for ensuring this */
- DUK_ASSERT(blen <= DUK_HSTRING_MAX_BYTELEN);
-
- res = duk__do_lookup(heap, str, blen, &strhash);
- if (res) {
- return res;
- }
-
- res = duk__do_intern(heap, str, blen, strhash);
- return res; /* may be NULL */
-}
-
-DUK_INTERNAL duk_hstring *duk_heap_string_intern_checked(duk_hthread *thr, const duk_uint8_t *str, duk_uint32_t blen) {
- duk_hstring *res = duk_heap_string_intern(thr->heap, str, blen);
- if (!res) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- return res;
-}
-
-#if 0 /*unused*/
-DUK_INTERNAL duk_hstring *duk_heap_string_lookup_u32(duk_heap *heap, duk_uint32_t val) {
- char buf[DUK_STRTAB_U32_MAX_STRLEN+1];
- DUK_SNPRINTF(buf, sizeof(buf), "%lu", (unsigned long) val);
- buf[sizeof(buf) - 1] = (char) 0;
- DUK_ASSERT(DUK_STRLEN(buf) <= DUK_UINT32_MAX); /* formatted result limited */
- return duk_heap_string_lookup(heap, (const duk_uint8_t *) buf, (duk_uint32_t) DUK_STRLEN(buf));
-}
-#endif
-
-DUK_INTERNAL duk_hstring *duk_heap_string_intern_u32(duk_heap *heap, duk_uint32_t val) {
- char buf[DUK_STRTAB_U32_MAX_STRLEN+1];
- DUK_SNPRINTF(buf, sizeof(buf), "%lu", (unsigned long) val);
- buf[sizeof(buf) - 1] = (char) 0;
- DUK_ASSERT(DUK_STRLEN(buf) <= DUK_UINT32_MAX); /* formatted result limited */
- return duk_heap_string_intern(heap, (const duk_uint8_t *) buf, (duk_uint32_t) DUK_STRLEN(buf));
-}
-
-DUK_INTERNAL duk_hstring *duk_heap_string_intern_u32_checked(duk_hthread *thr, duk_uint32_t val) {
- duk_hstring *res = duk_heap_string_intern_u32(thr->heap, val);
- if (!res) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- return res;
-}
-
-/* find and remove string from stringtable; caller must free the string itself */
-#if defined(DUK_USE_REFERENCE_COUNTING)
-DUK_INTERNAL void duk_heap_string_remove(duk_heap *heap, duk_hstring *h) {
- DUK_DDD(DUK_DDDPRINT("remove string from stringtable: %!O", (duk_heaphdr *) h));
-
-#if defined(DUK_USE_STRTAB_CHAIN)
- duk__remove_matching_hstring_chain(heap, h);
-#elif defined(DUK_USE_STRTAB_PROBE)
- duk__remove_matching_hstring_probe(heap,
-#if defined(DUK_USE_HEAPPTR16)
- heap->strtable16,
-#else
- heap->strtable,
-#endif
- heap->st_size,
- h);
-#else
-#error internal error, invalid strtab options
-#endif
-}
-#endif
-
-#if defined(DUK_USE_MARK_AND_SWEEP) && defined(DUK_USE_MS_STRINGTABLE_RESIZE)
-DUK_INTERNAL void duk_heap_force_strtab_resize(duk_heap *heap) {
- /* Force a resize so that DELETED entries are eliminated.
- * Another option would be duk__recheck_strtab_size_probe();
- * but since that happens on every intern anyway, this whole
- * check can now be disabled.
- */
-#if defined(DUK_USE_STRTAB_CHAIN)
- DUK_UNREF(heap);
-#elif defined(DUK_USE_STRTAB_PROBE)
- duk__resize_strtab_probe(heap);
-#endif
-}
-#endif
-
-#if defined(DUK_USE_STRTAB_CHAIN)
-DUK_INTERNAL void duk_heap_free_strtab(duk_heap *heap) {
- /* Free strings in the stringtable and any allocations needed
- * by the stringtable itself.
- */
- duk_uint_fast32_t i, j;
- duk_strtab_entry *e;
-#if defined(DUK_USE_HEAPPTR16)
- duk_uint16_t *lst;
- duk_uint16_t null16 = heap->heapptr_null16;
-#else
- duk_hstring **lst;
-#endif
- duk_hstring *h;
-
- for (i = 0; i < DUK_STRTAB_CHAIN_SIZE; i++) {
- e = heap->strtable + i;
- if (e->listlen > 0) {
-#if defined(DUK_USE_HEAPPTR16)
- lst = (duk_uint16_t *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.strlist16);
-#else
- lst = e->u.strlist;
-#endif
- DUK_ASSERT(lst != NULL);
-
- for (j = 0; j < e->listlen; j++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, lst[j]);
- lst[j] = null16;
-#else
- h = lst[j];
- lst[j] = NULL;
-#endif
- /* strings may have inner refs (extdata) in some cases */
- if (h != NULL) {
- duk_free_hstring_inner(heap, h);
- DUK_FREE(heap, h);
- }
- }
-#if defined(DUK_USE_HEAPPTR16)
- e->u.strlist16 = null16;
-#else
- e->u.strlist = NULL;
-#endif
- DUK_FREE(heap, lst);
- } else {
-#if defined(DUK_USE_HEAPPTR16)
- h = DUK_USE_HEAPPTR_DEC16(heap->heap_udata, e->u.str16);
- e->u.str16 = null16;
-#else
- h = e->u.str;
- e->u.str = NULL;
-#endif
- if (h != NULL) {
- duk_free_hstring_inner(heap, h);
- DUK_FREE(heap, h);
- }
- }
- e->listlen = 0;
- }
-}
-#endif /* DUK_USE_STRTAB_CHAIN */
-
-#if defined(DUK_USE_STRTAB_PROBE)
-DUK_INTERNAL void duk_heap_free_strtab(duk_heap *heap) {
- duk_uint_fast32_t i;
- duk_hstring *h;
-
-#if defined(DUK_USE_HEAPPTR16)
- if (heap->strtable16) {
-#else
- if (heap->strtable) {
-#endif
- for (i = 0; i < (duk_uint_fast32_t) heap->st_size; i++) {
-#if defined(DUK_USE_HEAPPTR16)
- h = (duk_hstring *) DUK_USE_HEAPPTR_DEC16(heap->heap_udata, heap->strtable16[i]);
-#else
- h = heap->strtable[i];
-#endif
- if (h == NULL || h == DUK_STRTAB_DELETED_MARKER(heap)) {
- continue;
- }
- DUK_ASSERT(h != NULL);
-
- /* strings may have inner refs (extdata) in some cases */
- duk_free_hstring_inner(heap, h);
- DUK_FREE(heap, h);
-#if 0 /* not strictly necessary */
- heap->strtable[i] = NULL;
-#endif
- }
-#if defined(DUK_USE_HEAPPTR16)
- DUK_FREE(heap, heap->strtable16);
-#else
- DUK_FREE(heap, heap->strtable);
-#endif
-#if 0 /* not strictly necessary */
- heap->strtable = NULL;
-#endif
- }
-}
-#endif /* DUK_USE_STRTAB_PROBE */
-
-/* Undefine local defines */
-#undef DUK__HASH_INITIAL
-#undef DUK__HASH_PROBE_STEP
-#undef DUK__DELETED_MARKER
-#line 1 "duk_hobject_alloc.c"
-/*
- * Hobject allocation.
- *
- * Provides primitive allocation functions for all object types (plain object,
- * compiled function, native function, thread). The object return is not yet
- * in "heap allocated" list and has a refcount of zero, so caller must careful.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_LOCAL void duk__init_object_parts(duk_heap *heap, duk_hobject *obj, duk_uint_t hobject_flags) {
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- DUK_HOBJECT_SET_PROPS(heap, obj, NULL);
-#endif
-
- /* XXX: macro? sets both heaphdr and object flags */
- obj->hdr.h_flags = hobject_flags;
- DUK_HEAPHDR_SET_TYPE(&obj->hdr, DUK_HTYPE_OBJECT); /* also goes into flags */
-
-#if defined(DUK_USE_HEAPPTR16)
- /* Zero encoded pointer is required to match NULL */
- DUK_HEAPHDR_SET_NEXT(heap, &obj->hdr, NULL);
-#if defined(DUK_USE_DOUBLE_LINKED_HEAP)
- DUK_HEAPHDR_SET_PREV(heap, &obj->hdr, NULL);
-#endif
-#endif
- DUK_ASSERT_HEAPHDR_LINKS(heap, &obj->hdr);
- DUK_HEAP_INSERT_INTO_HEAP_ALLOCATED(heap, &obj->hdr);
-
- /*
- * obj->props is intentionally left as NULL, and duk_hobject_props.c must deal
- * with this properly. This is intentional: empty objects consume a minimum
- * amount of memory. Further, an initial allocation might fail and cause
- * 'obj' to "leak" (require a mark-and-sweep) since it is not reachable yet.
- */
-}
-
-/*
- * Allocate an duk_hobject.
- *
- * The allocated object has no allocation for properties; the caller may
- * want to force a resize if a desired size is known.
- *
- * The allocated object has zero reference count and is not reachable.
- * The caller MUST make the object reachable and increase its reference
- * count before invoking any operation that might require memory allocation.
- */
-
-DUK_INTERNAL duk_hobject *duk_hobject_alloc(duk_heap *heap, duk_uint_t hobject_flags) {
- duk_hobject *res;
-
- DUK_ASSERT(heap != NULL);
-
- /* different memory layout, alloc size, and init */
- DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_COMPILEDFUNCTION) == 0);
- DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_NATIVEFUNCTION) == 0);
- DUK_ASSERT((hobject_flags & DUK_HOBJECT_FLAG_THREAD) == 0);
-
- res = (duk_hobject *) DUK_ALLOC(heap, sizeof(duk_hobject));
- if (!res) {
- return NULL;
- }
- DUK_MEMZERO(res, sizeof(duk_hobject));
-
- duk__init_object_parts(heap, res, hobject_flags);
-
- return res;
-}
-
-DUK_INTERNAL duk_hcompiledfunction *duk_hcompiledfunction_alloc(duk_heap *heap, duk_uint_t hobject_flags) {
- duk_hcompiledfunction *res;
-
- res = (duk_hcompiledfunction *) DUK_ALLOC(heap, sizeof(duk_hcompiledfunction));
- if (!res) {
- return NULL;
- }
- DUK_MEMZERO(res, sizeof(duk_hcompiledfunction));
-
- duk__init_object_parts(heap, &res->obj, hobject_flags);
-
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
-#ifdef DUK_USE_HEAPPTR16
- /* NULL pointer is required to encode to zero, so memset is enough. */
-#else
- res->data = NULL;
- res->funcs = NULL;
- res->bytecode = NULL;
-#endif
-#endif
-
- return res;
-}
-
-DUK_INTERNAL duk_hnativefunction *duk_hnativefunction_alloc(duk_heap *heap, duk_uint_t hobject_flags) {
- duk_hnativefunction *res;
-
- res = (duk_hnativefunction *) DUK_ALLOC(heap, sizeof(duk_hnativefunction));
- if (!res) {
- return NULL;
- }
- DUK_MEMZERO(res, sizeof(duk_hnativefunction));
-
- duk__init_object_parts(heap, &res->obj, hobject_flags);
-
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- res->func = NULL;
-#endif
-
- return res;
-}
-
-DUK_INTERNAL duk_hbufferobject *duk_hbufferobject_alloc(duk_heap *heap, duk_uint_t hobject_flags) {
- duk_hbufferobject *res;
-
- res = (duk_hbufferobject *) DUK_ALLOC(heap, sizeof(duk_hbufferobject));
- if (!res) {
- return NULL;
- }
- DUK_MEMZERO(res, sizeof(duk_hbufferobject));
-
- duk__init_object_parts(heap, &res->obj, hobject_flags);
-
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- res->buf = NULL;
-#endif
-
- DUK_ASSERT_HBUFFEROBJECT_VALID(res);
- return res;
-}
-
-/*
- * Allocate a new thread.
- *
- * Leaves the built-ins array uninitialized. The caller must either
- * initialize a new global context or share existing built-ins from
- * another thread.
- */
-
-DUK_INTERNAL duk_hthread *duk_hthread_alloc(duk_heap *heap, duk_uint_t hobject_flags) {
- duk_hthread *res;
-
- res = (duk_hthread *) DUK_ALLOC(heap, sizeof(duk_hthread));
- if (!res) {
- return NULL;
- }
- DUK_MEMZERO(res, sizeof(duk_hthread));
-
- duk__init_object_parts(heap, &res->obj, hobject_flags);
-
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- res->ptr_curr_pc = NULL;
- res->heap = NULL;
- res->valstack = NULL;
- res->valstack_end = NULL;
- res->valstack_bottom = NULL;
- res->valstack_top = NULL;
- res->callstack = NULL;
- res->catchstack = NULL;
- res->resumer = NULL;
- res->compile_ctx = NULL,
-#ifdef DUK_USE_HEAPPTR16
- res->strs16 = NULL;
-#else
- res->strs = NULL;
-#endif
- {
- int i;
- for (i = 0; i < DUK_NUM_BUILTINS; i++) {
- res->builtins[i] = NULL;
- }
- }
-#endif
- /* when nothing is running, API calls are in non-strict mode */
- DUK_ASSERT(res->strict == 0);
-
- res->heap = heap;
- res->valstack_max = DUK_VALSTACK_DEFAULT_MAX;
- res->callstack_max = DUK_CALLSTACK_DEFAULT_MAX;
- res->catchstack_max = DUK_CATCHSTACK_DEFAULT_MAX;
-
- return res;
-}
-
-#if 0 /* unused now */
-DUK_INTERNAL duk_hobject *duk_hobject_alloc_checked(duk_hthread *thr, duk_uint_t hobject_flags) {
- duk_hobject *res = duk_hobject_alloc(thr->heap, hobject_flags);
- if (!res) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- return res;
-}
-#endif
-#line 1 "duk_hobject_enum.c"
-/*
- * Hobject enumeration support.
- *
- * Creates an internal enumeration state object to be used e.g. with for-in
- * enumeration. The state object contains a snapshot of target object keys
- * and internal control state for enumeration. Enumerator flags allow caller
- * to e.g. request internal/non-enumerable properties, and to enumerate only
- * "own" properties.
- *
- * Also creates the result value for e.g. Object.keys() based on the same
- * internal structure.
- *
- * This snapshot-based enumeration approach is used to simplify enumeration:
- * non-snapshot-based approaches are difficult to reconcile with mutating
- * the enumeration target, running multiple long-lived enumerators at the
- * same time, garbage collection details, etc. The downside is that the
- * enumerator object is memory inefficient especially for iterating arrays.
- */
-
-/* include removed: duk_internal.h */
-
-/* XXX: identify enumeration target with an object index (not top of stack) */
-
-/* must match exactly the number of internal properties inserted to enumerator */
-#define DUK__ENUM_START_INDEX 2
-
-DUK_LOCAL const duk_uint16_t duk__bufferobject_virtual_props[] = {
- DUK_STRIDX_LENGTH,
- DUK_STRIDX_BYTE_LENGTH,
- DUK_STRIDX_BYTE_OFFSET,
- DUK_STRIDX_BYTES_PER_ELEMENT
-};
-
-/*
- * Helper to sort array index keys. The keys are in the enumeration object
- * entry part, starting from DUK__ENUM_START_INDEX, and the entry part is dense.
- *
- * We use insertion sort because it is simple (leading to compact code,)
- * works nicely in-place, and minimizes operations if data is already sorted
- * or nearly sorted (which is a very common case here). It also minimizes
- * the use of element comparisons in general. This is nice because element
- * comparisons here involve re-parsing the string keys into numbers each
- * time, which is naturally very expensive.
- *
- * Note that the entry part values are all "true", e.g.
- *
- * "1" -> true, "3" -> true, "2" -> true
- *
- * so it suffices to only work in the key part without exchanging any keys,
- * simplifying the sort.
- *
- * http://en.wikipedia.org/wiki/Insertion_sort
- *
- * (Compiles to about 160 bytes now as a stand-alone function.)
- */
-
-DUK_LOCAL void duk__sort_array_indices(duk_hthread *thr, duk_hobject *h_obj) {
- duk_hstring **keys;
- duk_hstring **p_curr, **p_insert, **p_end;
- duk_hstring *h_curr;
- duk_uarridx_t val_highest, val_curr, val_insert;
-
- DUK_ASSERT(h_obj != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(h_obj) >= 2); /* control props */
- DUK_UNREF(thr);
-
- if (DUK_HOBJECT_GET_ENEXT(h_obj) <= 1 + DUK__ENUM_START_INDEX) {
- return;
- }
-
- keys = DUK_HOBJECT_E_GET_KEY_BASE(thr->heap, h_obj);
- p_end = keys + DUK_HOBJECT_GET_ENEXT(h_obj);
- keys += DUK__ENUM_START_INDEX;
-
- DUK_DDD(DUK_DDDPRINT("keys=%p, p_end=%p (after skipping enum props)",
- (void *) keys, (void *) p_end));
-
-#ifdef DUK_USE_DDDPRINT
- {
- duk_uint_fast32_t i;
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h_obj); i++) {
- DUK_DDD(DUK_DDDPRINT("initial: %ld %p -> %!O",
- (long) i,
- (void *) DUK_HOBJECT_E_GET_KEY_PTR(thr->heap, h_obj, i),
- (duk_heaphdr *) DUK_HOBJECT_E_GET_KEY(thr->heap, h_obj, i)));
- }
- }
-#endif
-
- val_highest = DUK_HSTRING_GET_ARRIDX_SLOW(keys[0]);
- for (p_curr = keys + 1; p_curr < p_end; p_curr++) {
- DUK_ASSERT(*p_curr != NULL);
- val_curr = DUK_HSTRING_GET_ARRIDX_SLOW(*p_curr);
-
- if (val_curr >= val_highest) {
- DUK_DDD(DUK_DDDPRINT("p_curr=%p, p_end=%p, val_highest=%ld, val_curr=%ld -> "
- "already in correct order, next",
- (void *) p_curr, (void *) p_end, (long) val_highest, (long) val_curr));
- val_highest = val_curr;
- continue;
- }
-
- DUK_DDD(DUK_DDDPRINT("p_curr=%p, p_end=%p, val_highest=%ld, val_curr=%ld -> "
- "needs to be inserted",
- (void *) p_curr, (void *) p_end, (long) val_highest, (long) val_curr));
-
- /* Needs to be inserted; scan backwards, since we optimize
- * for the case where elements are nearly in order.
- */
-
- p_insert = p_curr - 1;
- for (;;) {
- val_insert = DUK_HSTRING_GET_ARRIDX_SLOW(*p_insert);
- if (val_insert < val_curr) {
- DUK_DDD(DUK_DDDPRINT("p_insert=%p, val_insert=%ld, val_curr=%ld -> insert after this",
- (void *) p_insert, (long) val_insert, (long) val_curr));
- p_insert++;
- break;
- }
- if (p_insert == keys) {
- DUK_DDD(DUK_DDDPRINT("p_insert=%p -> out of keys, insert to beginning", (void *) p_insert));
- break;
- }
- DUK_DDD(DUK_DDDPRINT("p_insert=%p, val_insert=%ld, val_curr=%ld -> search backwards",
- (void *) p_insert, (long) val_insert, (long) val_curr));
- p_insert--;
- }
-
- DUK_DDD(DUK_DDDPRINT("final p_insert=%p", (void *) p_insert));
-
- /* .-- p_insert .-- p_curr
- * v v
- * | ... | insert | ... | curr
- */
-
- h_curr = *p_curr;
- DUK_DDD(DUK_DDDPRINT("memmove: dest=%p, src=%p, size=%ld, h_curr=%p",
- (void *) (p_insert + 1), (void *) p_insert,
- (long) (p_curr - p_insert), (void *) h_curr));
-
- DUK_MEMMOVE((void *) (p_insert + 1),
- (const void *) p_insert,
- (size_t) ((p_curr - p_insert) * sizeof(duk_hstring *)));
- *p_insert = h_curr;
- /* keep val_highest */
- }
-
-#ifdef DUK_USE_DDDPRINT
- {
- duk_uint_fast32_t i;
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(h_obj); i++) {
- DUK_DDD(DUK_DDDPRINT("final: %ld %p -> %!O",
- (long) i,
- (void *) DUK_HOBJECT_E_GET_KEY_PTR(thr->heap, h_obj, i),
- (duk_heaphdr *) DUK_HOBJECT_E_GET_KEY(thr->heap, h_obj, i)));
- }
- }
-#endif
-}
-
-/*
- * Create an internal enumerator object E, which has its keys ordered
- * to match desired enumeration ordering. Also initialize internal control
- * properties for enumeration.
- *
- * Note: if an array was used to hold enumeration keys instead, an array
- * scan would be needed to eliminate duplicates found in the prototype chain.
- */
-
-DUK_INTERNAL void duk_hobject_enumerator_create(duk_context *ctx, duk_small_uint_t enum_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *enum_target;
- duk_hobject *curr;
- duk_hobject *res;
-#if defined(DUK_USE_ES6_PROXY)
- duk_hobject *h_proxy_target;
- duk_hobject *h_proxy_handler;
- duk_hobject *h_trap_result;
-#endif
- duk_uint_fast32_t i, len; /* used for array, stack, and entry indices */
-
- DUK_ASSERT(ctx != NULL);
-
- DUK_DDD(DUK_DDDPRINT("create enumerator, stack top: %ld", (long) duk_get_top(ctx)));
-
- enum_target = duk_require_hobject(ctx, -1);
- DUK_ASSERT(enum_target != NULL);
-
- duk_push_object_internal(ctx);
- res = duk_require_hobject(ctx, -1);
-
- DUK_DDD(DUK_DDDPRINT("created internal object"));
-
- /* [enum_target res] */
-
- /* Target must be stored so that we can recheck whether or not
- * keys still exist when we enumerate. This is not done if the
- * enumeration result comes from a proxy trap as there is no
- * real object to check against.
- */
- duk_push_hobject(ctx, enum_target);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_INT_TARGET);
-
- /* Initialize index so that we skip internal control keys. */
- duk_push_int(ctx, DUK__ENUM_START_INDEX);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_INT_NEXT);
-
- /*
- * Proxy object handling
- */
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_LIKELY((enum_flags & DUK_ENUM_NO_PROXY_BEHAVIOR) != 0)) {
- goto skip_proxy;
- }
- if (DUK_LIKELY(!duk_hobject_proxy_check(thr,
- enum_target,
- &h_proxy_target,
- &h_proxy_handler))) {
- goto skip_proxy;
- }
-
- DUK_DDD(DUK_DDDPRINT("proxy enumeration"));
- duk_push_hobject(ctx, h_proxy_handler);
- if (!duk_get_prop_stridx(ctx, -1, DUK_STRIDX_ENUMERATE)) {
- /* No need to replace the 'enum_target' value in stack, only the
- * enum_target reference. This also ensures that the original
- * enum target is reachable, which keeps the proxy and the proxy
- * target reachable. We do need to replace the internal _Target.
- */
- DUK_DDD(DUK_DDDPRINT("no enumerate trap, enumerate proxy target instead"));
- DUK_DDD(DUK_DDDPRINT("h_proxy_target=%!O", (duk_heaphdr *) h_proxy_target));
- enum_target = h_proxy_target;
-
- duk_push_hobject(ctx, enum_target); /* -> [ ... enum_target res handler undefined target ] */
- duk_put_prop_stridx(ctx, -4, DUK_STRIDX_INT_TARGET);
-
- duk_pop_2(ctx); /* -> [ ... enum_target res ] */
- goto skip_proxy;
- }
-
- /* [ ... enum_target res handler trap ] */
- duk_insert(ctx, -2);
- duk_push_hobject(ctx, h_proxy_target); /* -> [ ... enum_target res trap handler target ] */
- duk_call_method(ctx, 1 /*nargs*/); /* -> [ ... enum_target res trap_result ] */
- h_trap_result = duk_require_hobject(ctx, -1);
- DUK_UNREF(h_trap_result);
-
- /* Copy trap result keys into the enumerator object. */
- len = (duk_uint_fast32_t) duk_get_length(ctx, -1);
- for (i = 0; i < len; i++) {
- /* XXX: not sure what the correct semantic details are here,
- * e.g. handling of missing values (gaps), handling of non-array
- * trap results, etc.
- *
- * For keys, we simply skip non-string keys which seems to be
- * consistent with how e.g. Object.keys() will process proxy trap
- * results (ES6, Section 19.1.2.14).
- */
- if (duk_get_prop_index(ctx, -1, i) && duk_is_string(ctx, -1)) {
- /* [ ... enum_target res trap_result val ] */
- duk_push_true(ctx);
- /* [ ... enum_target res trap_result val true ] */
- duk_put_prop(ctx, -4);
- } else {
- duk_pop(ctx);
- }
- }
- /* [ ... enum_target res trap_result ] */
- duk_pop(ctx);
- duk_remove(ctx, -2);
-
- /* [ ... res ] */
-
- /* The internal _Target property is kept pointing to the original
- * enumeration target (the proxy object), so that the enumerator
- * 'next' operation can read property values if so requested. The
- * fact that the _Target is a proxy disables key existence check
- * during enumeration.
- */
- DUK_DDD(DUK_DDDPRINT("proxy enumeration, final res: %!O", (duk_heaphdr *) res));
- goto compact_and_return;
-
- skip_proxy:
-#endif /* DUK_USE_ES6_PROXY */
-
- curr = enum_target;
- while (curr) {
- /*
- * Virtual properties.
- *
- * String and buffer indices are virtual and always enumerable,
- * 'length' is virtual and non-enumerable. Array and arguments
- * object props have special behavior but are concrete.
- */
-
- if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr) ||
- DUK_HOBJECT_IS_BUFFEROBJECT(curr)) {
- /* String and buffer enumeration behavior is identical now,
- * so use shared handler.
- */
- if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr)) {
- duk_hstring *h_val;
- h_val = duk_hobject_get_internal_value_string(thr->heap, curr);
- DUK_ASSERT(h_val != NULL); /* string objects must not created without internal value */
- len = (duk_uint_fast32_t) DUK_HSTRING_GET_CHARLEN(h_val);
- } else {
- duk_hbufferobject *h_bufobj;
- DUK_ASSERT(DUK_HOBJECT_IS_BUFFEROBJECT(curr));
- h_bufobj = (duk_hbufferobject *) curr;
- if (h_bufobj == NULL) {
- /* Neutered buffer, zero length seems
- * like good behavior here.
- */
- len = 0;
- } else {
- /* There's intentionally no check for
- * current underlying buffer length.
- */
- len = (duk_uint_fast32_t) (h_bufobj->length >> h_bufobj->shift);
- }
- }
-
- for (i = 0; i < len; i++) {
- duk_hstring *k;
-
- k = duk_heap_string_intern_u32_checked(thr, i);
- DUK_ASSERT(k);
- duk_push_hstring(ctx, k);
- duk_push_true(ctx);
-
- /* [enum_target res key true] */
- duk_put_prop(ctx, -3);
-
- /* [enum_target res] */
- }
-
- /* 'length' and other virtual properties are not
- * enumerable, but are included if non-enumerable
- * properties are requested.
- */
-
- if (enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE) {
- duk_uint_fast32_t n;
-
- if (DUK_HOBJECT_IS_BUFFEROBJECT(curr)) {
- n = sizeof(duk__bufferobject_virtual_props) / sizeof(duk_uint16_t);
- } else {
- DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(curr));
- DUK_ASSERT(duk__bufferobject_virtual_props[0] == DUK_STRIDX_LENGTH);
- n = 1; /* only 'length' */
- }
-
- for (i = 0; i < n; i++) {
- duk_push_hstring_stridx(ctx, duk__bufferobject_virtual_props[i]);
- duk_push_true(ctx);
- duk_put_prop(ctx, -3);
- }
-
- }
- } else if (DUK_HOBJECT_HAS_EXOTIC_DUKFUNC(curr)) {
- if (enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LENGTH);
- duk_push_true(ctx);
- duk_put_prop(ctx, -3);
- }
- }
-
- /*
- * Array part
- *
- * Note: ordering between array and entry part must match 'abandon array'
- * behavior in duk_hobject_props.c: key order after an array is abandoned
- * must be the same.
- */
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ASIZE(curr); i++) {
- duk_hstring *k;
- duk_tval *tv;
-
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, curr, i);
- if (DUK_TVAL_IS_UNUSED(tv)) {
- continue;
- }
- k = duk_heap_string_intern_u32_checked(thr, i);
- DUK_ASSERT(k);
-
- duk_push_hstring(ctx, k);
- duk_push_true(ctx);
-
- /* [enum_target res key true] */
- duk_put_prop(ctx, -3);
-
- /* [enum_target res] */
- }
-
- /*
- * Entries part
- */
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(curr); i++) {
- duk_hstring *k;
-
- k = DUK_HOBJECT_E_GET_KEY(thr->heap, curr, i);
- if (!k) {
- continue;
- }
- if (!DUK_HOBJECT_E_SLOT_IS_ENUMERABLE(thr->heap, curr, i) &&
- !(enum_flags & DUK_ENUM_INCLUDE_NONENUMERABLE)) {
- continue;
- }
- if (DUK_HSTRING_HAS_INTERNAL(k) &&
- !(enum_flags & DUK_ENUM_INCLUDE_INTERNAL)) {
- continue;
- }
- if ((enum_flags & DUK_ENUM_ARRAY_INDICES_ONLY) &&
- (DUK_HSTRING_GET_ARRIDX_SLOW(k) == DUK_HSTRING_NO_ARRAY_INDEX)) {
- continue;
- }
-
- DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, curr, i) ||
- !DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE_PTR(thr->heap, curr, i)->v));
-
- duk_push_hstring(ctx, k);
- duk_push_true(ctx);
-
- /* [enum_target res key true] */
- duk_put_prop(ctx, -3);
-
- /* [enum_target res] */
- }
-
- if (enum_flags & DUK_ENUM_OWN_PROPERTIES_ONLY) {
- break;
- }
-
- curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr);
- }
-
- /* [enum_target res] */
-
- duk_remove(ctx, -2);
-
- /* [res] */
-
- if ((enum_flags & (DUK_ENUM_ARRAY_INDICES_ONLY | DUK_ENUM_SORT_ARRAY_INDICES)) ==
- (DUK_ENUM_ARRAY_INDICES_ONLY | DUK_ENUM_SORT_ARRAY_INDICES)) {
- /*
- * Some E5/E5.1 algorithms require that array indices are iterated
- * in a strictly ascending order. This is the case for e.g.
- * Array.prototype.forEach() and JSON.stringify() PropertyList
- * handling.
- *
- * To ensure this property for arrays with an array part (and
- * arbitrary objects too, since e.g. forEach() can be applied
- * to an array), the caller can request that we sort the keys
- * here.
- */
-
- /* XXX: avoid this at least when enum_target is an Array, it has an
- * array part, and no ancestor properties were included? Not worth
- * it for JSON, but maybe worth it for forEach().
- */
-
- /* XXX: may need a 'length' filter for forEach()
- */
- DUK_DDD(DUK_DDDPRINT("sort array indices by caller request"));
- duk__sort_array_indices(thr, res);
- }
-
-#if defined(DUK_USE_ES6_PROXY)
- compact_and_return:
-#endif
- /* compact; no need to seal because object is internal */
- duk_hobject_compact_props(thr, res);
-
- DUK_DDD(DUK_DDDPRINT("created enumerator object: %!iT", (duk_tval *) duk_get_tval(ctx, -1)));
-}
-
-/*
- * Returns non-zero if a key and/or value was enumerated, and:
- *
- * [enum] -> [key] (get_value == 0)
- * [enum] -> [key value] (get_value == 1)
- *
- * Returns zero without pushing anything on the stack otherwise.
- */
-DUK_INTERNAL duk_bool_t duk_hobject_enumerator_next(duk_context *ctx, duk_bool_t get_value) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *e;
- duk_hobject *enum_target;
- duk_hstring *res = NULL;
- duk_uint_fast32_t idx;
- duk_bool_t check_existence;
-
- DUK_ASSERT(ctx != NULL);
-
- /* [... enum] */
-
- e = duk_require_hobject(ctx, -1);
-
- /* XXX use get tval ptr, more efficient */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_NEXT);
- idx = (duk_uint_fast32_t) duk_require_uint(ctx, -1);
- duk_pop(ctx);
- DUK_DDD(DUK_DDDPRINT("enumeration: index is: %ld", (long) idx));
-
- /* Enumeration keys are checked against the enumeration target (to see
- * that they still exist). In the proxy enumeration case _Target will
- * be the proxy, and checking key existence against the proxy is not
- * required (or sensible, as the keys may be fully virtual).
- */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TARGET);
- enum_target = duk_require_hobject(ctx, -1);
- DUK_ASSERT(enum_target != NULL);
-#if defined(DUK_USE_ES6_PROXY)
- check_existence = (!DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(enum_target));
-#else
- check_existence = 1;
-#endif
- duk_pop(ctx); /* still reachable */
-
- DUK_DDD(DUK_DDDPRINT("getting next enum value, enum_target=%!iO, enumerator=%!iT",
- (duk_heaphdr *) enum_target, (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* no array part */
- for (;;) {
- duk_hstring *k;
-
- if (idx >= DUK_HOBJECT_GET_ENEXT(e)) {
- DUK_DDD(DUK_DDDPRINT("enumeration: ran out of elements"));
- break;
- }
-
- /* we know these because enum objects are internally created */
- k = DUK_HOBJECT_E_GET_KEY(thr->heap, e, idx);
- DUK_ASSERT(k != NULL);
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, e, idx));
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(&DUK_HOBJECT_E_GET_VALUE(thr->heap, e, idx).v));
-
- idx++;
-
- /* recheck that the property still exists */
- if (check_existence && !duk_hobject_hasprop_raw(thr, enum_target, k)) {
- DUK_DDD(DUK_DDDPRINT("property deleted during enumeration, skip"));
- continue;
- }
-
- DUK_DDD(DUK_DDDPRINT("enumeration: found element, key: %!O", (duk_heaphdr *) k));
- res = k;
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("enumeration: updating next index to %ld", (long) idx));
-
- duk_push_u32(ctx, (duk_uint32_t) idx);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_INT_NEXT);
-
- /* [... enum] */
-
- if (res) {
- duk_push_hstring(ctx, res);
- if (get_value) {
- duk_push_hobject(ctx, enum_target);
- duk_dup(ctx, -2); /* -> [... enum key enum_target key] */
- duk_get_prop(ctx, -2); /* -> [... enum key enum_target val] */
- duk_remove(ctx, -2); /* -> [... enum key val] */
- duk_remove(ctx, -3); /* -> [... key val] */
- } else {
- duk_remove(ctx, -2); /* -> [... key] */
- }
- return 1;
- } else {
- duk_pop(ctx); /* -> [...] */
- return 0;
- }
-}
-
-/*
- * Get enumerated keys in an Ecmascript array. Matches Object.keys() behavior
- * described in E5 Section 15.2.3.14.
- */
-
-DUK_INTERNAL duk_ret_t duk_hobject_get_enumerated_keys(duk_context *ctx, duk_small_uint_t enum_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *e;
- duk_uint_fast32_t i;
- duk_uint_fast32_t idx;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(duk_get_hobject(ctx, -1) != NULL);
- DUK_UNREF(thr);
-
- /* Create a temporary enumerator to get the (non-duplicated) key list;
- * the enumerator state is initialized without being needed, but that
- * has little impact.
- */
-
- duk_hobject_enumerator_create(ctx, enum_flags);
- duk_push_array(ctx);
-
- /* [enum_target enum res] */
-
- e = duk_require_hobject(ctx, -2);
- DUK_ASSERT(e != NULL);
-
- idx = 0;
- for (i = DUK__ENUM_START_INDEX; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(e); i++) {
- duk_hstring *k;
-
- k = DUK_HOBJECT_E_GET_KEY(thr->heap, e, i);
- DUK_ASSERT(k); /* enumerator must have no keys deleted */
-
- /* [enum_target enum res] */
- duk_push_hstring(ctx, k);
- duk_put_prop_index(ctx, -2, idx);
- idx++;
- }
-
- /* [enum_target enum res] */
- duk_remove(ctx, -2);
-
- /* [enum_target res] */
-
- return 1; /* return 1 to allow callers to tail call */
-}
-#line 1 "duk_hobject_finalizer.c"
-/*
- * Run an duk_hobject finalizer. Used for both reference counting
- * and mark-and-sweep algorithms. Must never throw an error.
- *
- * There is no return value. Any return value or error thrown by
- * the finalizer is ignored (although errors are debug logged).
- *
- * Notes:
- *
- * - The thread used for calling the finalizer is the same as the
- * 'thr' argument. This may need to change later.
- *
- * - The finalizer thread 'top' assertions are there because it is
- * critical that strict stack policy is observed (i.e. no cruft
- * left on the finalizer stack).
- */
-
-/* include removed: duk_internal.h */
-
-DUK_LOCAL duk_ret_t duk__finalize_helper(duk_context *ctx) {
- duk_hthread *thr;
-
- DUK_ASSERT(ctx != NULL);
- thr = (duk_hthread *) ctx;
-
- DUK_DDD(DUK_DDDPRINT("protected finalization helper running"));
-
- /* [... obj] */
-
- /* XXX: Finalizer lookup should traverse the prototype chain (to allow
- * inherited finalizers) but should not invoke accessors or proxy object
- * behavior. At the moment this lookup will invoke proxy behavior, so
- * caller must ensure that this function is not called if the target is
- * a Proxy.
- */
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_FINALIZER); /* -> [... obj finalizer] */
- if (!duk_is_callable(ctx, -1)) {
- DUK_DDD(DUK_DDDPRINT("-> no finalizer or finalizer not callable"));
- return 0;
- }
- duk_dup(ctx, -2);
- duk_push_boolean(ctx, DUK_HEAP_HAS_FINALIZER_NORESCUE(thr->heap));
- DUK_DDD(DUK_DDDPRINT("-> finalizer found, calling finalizer"));
- duk_call(ctx, 2); /* [ ... obj finalizer obj heapDestruct ] -> [ ... obj retval ] */
- DUK_DDD(DUK_DDDPRINT("finalizer finished successfully"));
- return 0;
-
- /* Note: we rely on duk_safe_call() to fix up the stack for the caller,
- * so we don't need to pop stuff here. There is no return value;
- * caller determines rescued status based on object refcount.
- */
-}
-
-DUK_INTERNAL void duk_hobject_run_finalizer(duk_hthread *thr, duk_hobject *obj) {
- duk_context *ctx = (duk_context *) thr;
- duk_ret_t rc;
-#ifdef DUK_USE_ASSERTIONS
- duk_idx_t entry_top;
-#endif
-
- DUK_DDD(DUK_DDDPRINT("running object finalizer for object: %p", (void *) obj));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, 1);
-
-#ifdef DUK_USE_ASSERTIONS
- entry_top = duk_get_top(ctx);
-#endif
- /*
- * Get and call the finalizer. All of this must be wrapped
- * in a protected call, because even getting the finalizer
- * may trigger an error (getter may throw one, for instance).
- */
-
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj));
- if (DUK_HEAPHDR_HAS_FINALIZED((duk_heaphdr *) obj)) {
- DUK_D(DUK_DPRINT("object already finalized, avoid running finalizer twice: %!O", obj));
- return;
- }
- DUK_HEAPHDR_SET_FINALIZED((duk_heaphdr *) obj); /* ensure never re-entered until rescue cycle complete */
- if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj)) {
- /* This shouldn't happen; call sites should avoid looking up
- * _Finalizer "through" a Proxy, but ignore if we come here
- * with a Proxy to avoid finalizer re-entry.
- */
- DUK_D(DUK_DPRINT("object is a proxy, skip finalizer call"));
- return;
- }
-
- /* XXX: use a NULL error handler for the finalizer call? */
-
- DUK_DDD(DUK_DDDPRINT("-> finalizer found, calling wrapped finalize helper"));
- duk_push_hobject(ctx, obj); /* this also increases refcount by one */
- rc = duk_safe_call(ctx, duk__finalize_helper, 0 /*nargs*/, 1 /*nrets*/); /* -> [... obj retval/error] */
- DUK_ASSERT_TOP(ctx, entry_top + 2); /* duk_safe_call discipline */
-
- if (rc != DUK_EXEC_SUCCESS) {
- /* Note: we ask for one return value from duk_safe_call to get this
- * error debugging here.
- */
- DUK_D(DUK_DPRINT("wrapped finalizer call failed for object %p (ignored); error: %!T",
- (void *) obj, (duk_tval *) duk_get_tval(ctx, -1)));
- }
- duk_pop_2(ctx); /* -> [...] */
-
- DUK_ASSERT_TOP(ctx, entry_top);
-}
-#line 1 "duk_hobject_misc.c"
-/*
- * Misc support functions
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_bool_t duk_hobject_prototype_chain_contains(duk_hthread *thr, duk_hobject *h, duk_hobject *p, duk_bool_t ignore_loop) {
- duk_uint_t sanity;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(h != NULL);
- /* allow 'p' to be NULL; then the result is always false */
-
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- if (h == p) {
- return 1;
- }
-
- if (sanity-- == 0) {
- if (ignore_loop) {
- break;
- } else {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- }
- h = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h);
- } while (h);
-
- return 0;
-}
-
-DUK_INTERNAL void duk_hobject_set_prototype_updref(duk_hthread *thr, duk_hobject *h, duk_hobject *p) {
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk_hobject *tmp;
-
- DUK_ASSERT(h);
- tmp = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, h);
- DUK_HOBJECT_SET_PROTOTYPE(thr->heap, h, p);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, p); /* avoid problems if p == h->prototype */
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
-#else
- DUK_ASSERT(h);
- DUK_UNREF(thr);
- DUK_HOBJECT_SET_PROTOTYPE(thr->heap, h, p);
-#endif
-}
-#line 1 "duk_hobject_pc2line.c"
-/*
- * Helpers for creating and querying pc2line debug data, which
- * converts a bytecode program counter to a source line number.
- *
- * The run-time pc2line data is bit-packed, and documented in:
- *
- * doc/function-objects.rst
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_PC2LINE)
-
-/* Generate pc2line data for an instruction sequence, leaving a buffer on stack top. */
-DUK_INTERNAL void duk_hobject_pc2line_pack(duk_hthread *thr, duk_compiler_instr *instrs, duk_uint_fast32_t length) {
- duk_context *ctx = (duk_context *) thr;
- duk_hbuffer_dynamic *h_buf;
- duk_bitencoder_ctx be_ctx_alloc;
- duk_bitencoder_ctx *be_ctx = &be_ctx_alloc;
- duk_uint32_t *hdr;
- duk_size_t new_size;
- duk_uint_fast32_t num_header_entries;
- duk_uint_fast32_t curr_offset;
- duk_int_fast32_t curr_line, next_line, diff_line;
- duk_uint_fast32_t curr_pc;
- duk_uint_fast32_t hdr_index;
-
- DUK_ASSERT(length <= DUK_COMPILER_MAX_BYTECODE_LENGTH);
-
- /* XXX: add proper spare handling to dynamic buffer, to minimize
- * reallocs; currently there is no spare at all.
- */
-
- num_header_entries = (length + DUK_PC2LINE_SKIP - 1) / DUK_PC2LINE_SKIP;
- curr_offset = (duk_uint_fast32_t) (sizeof(duk_uint32_t) + num_header_entries * sizeof(duk_uint32_t) * 2);
-
- duk_push_dynamic_buffer(ctx, (duk_size_t) curr_offset);
- h_buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(h_buf) && !DUK_HBUFFER_HAS_EXTERNAL(h_buf));
-
- hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf);
- DUK_ASSERT(hdr != NULL);
- hdr[0] = (duk_uint32_t) length; /* valid pc range is [0, length[ */
-
- curr_pc = 0U;
- while (curr_pc < length) {
- new_size = (duk_size_t) (curr_offset + DUK_PC2LINE_MAX_DIFF_LENGTH);
- duk_hbuffer_resize(thr, h_buf, new_size);
-
- hdr = (duk_uint32_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, h_buf);
- DUK_ASSERT(hdr != NULL);
- DUK_ASSERT(curr_pc < length);
- hdr_index = 1 + (curr_pc / DUK_PC2LINE_SKIP) * 2;
- curr_line = (duk_int_fast32_t) instrs[curr_pc].line;
- hdr[hdr_index + 0] = (duk_uint32_t) curr_line;
- hdr[hdr_index + 1] = (duk_uint32_t) curr_offset;
-
-#if 0
- DUK_DDD(DUK_DDDPRINT("hdr[%ld]: pc=%ld line=%ld offset=%ld",
- (long) (curr_pc / DUK_PC2LINE_SKIP),
- (long) curr_pc,
- (long) hdr[hdr_index + 0],
- (long) hdr[hdr_index + 1]));
-#endif
-
- DUK_MEMZERO(be_ctx, sizeof(*be_ctx));
- be_ctx->data = ((duk_uint8_t *) hdr) + curr_offset;
- be_ctx->length = (duk_size_t) DUK_PC2LINE_MAX_DIFF_LENGTH;
-
- for (;;) {
- curr_pc++;
- if ( ((curr_pc % DUK_PC2LINE_SKIP) == 0) || /* end of diff run */
- (curr_pc >= length) ) { /* end of bytecode */
- break;
- }
- DUK_ASSERT(curr_pc < length);
- next_line = (duk_int32_t) instrs[curr_pc].line;
- diff_line = next_line - curr_line;
-
-#if 0
- DUK_DDD(DUK_DDDPRINT("curr_line=%ld, next_line=%ld -> diff_line=%ld",
- (long) curr_line, (long) next_line, (long) diff_line));
-#endif
-
- if (diff_line == 0) {
- /* 0 */
- duk_be_encode(be_ctx, 0, 1);
- } else if (diff_line >= 1 && diff_line <= 4) {
- /* 1 0 <2 bits> */
- duk_be_encode(be_ctx, (0x02 << 2) + (diff_line - 1), 4);
- } else if (diff_line >= -0x80 && diff_line <= 0x7f) {
- /* 1 1 0 <8 bits> */
- DUK_ASSERT(diff_line + 0x80 >= 0 && diff_line + 0x80 <= 0xff);
- duk_be_encode(be_ctx, (0x06 << 8) + (diff_line + 0x80), 11);
- } else {
- /* 1 1 1 <32 bits>
- * Encode in two parts to avoid bitencode 24-bit limitation
- */
- duk_be_encode(be_ctx, (0x07 << 16) + ((next_line >> 16) & 0xffffU), 19);
- duk_be_encode(be_ctx, next_line & 0xffffU, 16);
- }
-
- curr_line = next_line;
- }
-
- duk_be_finish(be_ctx);
- DUK_ASSERT(!be_ctx->truncated);
-
- /* be_ctx->offset == length of encoded bitstream */
- curr_offset += (duk_uint_fast32_t) be_ctx->offset;
- }
-
- /* compact */
- new_size = (duk_size_t) curr_offset;
- duk_hbuffer_resize(thr, h_buf, new_size);
-
- (void) duk_to_fixed_buffer(ctx, -1, NULL);
-
- DUK_DDD(DUK_DDDPRINT("final pc2line data: pc_limit=%ld, length=%ld, %lf bits/opcode --> %!ixT",
- (long) length, (long) new_size, (double) new_size * 8.0 / (double) length,
- (duk_tval *) duk_get_tval(ctx, -1)));
-}
-
-/* PC is unsigned. If caller does PC arithmetic and gets a negative result,
- * it will map to a large PC which is out of bounds and causes a zero to be
- * returned.
- */
-DUK_LOCAL duk_uint_fast32_t duk__hobject_pc2line_query_raw(duk_hthread *thr, duk_hbuffer_fixed *buf, duk_uint_fast32_t pc) {
- duk_bitdecoder_ctx bd_ctx_alloc;
- duk_bitdecoder_ctx *bd_ctx = &bd_ctx_alloc;
- duk_uint32_t *hdr;
- duk_uint_fast32_t start_offset;
- duk_uint_fast32_t pc_limit;
- duk_uint_fast32_t hdr_index;
- duk_uint_fast32_t pc_base;
- duk_uint_fast32_t n;
- duk_uint_fast32_t curr_line;
-
- DUK_ASSERT(buf != NULL);
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) buf) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) buf));
- DUK_UNREF(thr);
-
- /*
- * Use the index in the header to find the right starting point
- */
-
- hdr_index = pc / DUK_PC2LINE_SKIP;
- pc_base = hdr_index * DUK_PC2LINE_SKIP;
- n = pc - pc_base;
-
- if (DUK_HBUFFER_FIXED_GET_SIZE(buf) <= sizeof(duk_uint32_t)) {
- DUK_DD(DUK_DDPRINT("pc2line lookup failed: buffer is smaller than minimal header"));
- goto error;
- }
-
- hdr = (duk_uint32_t *) (void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, buf);
- pc_limit = hdr[0];
- if (pc >= pc_limit) {
- /* Note: pc is unsigned and cannot be negative */
- DUK_DD(DUK_DDPRINT("pc2line lookup failed: pc out of bounds (pc=%ld, limit=%ld)",
- (long) pc, (long) pc_limit));
- goto error;
- }
-
- curr_line = hdr[1 + hdr_index * 2];
- start_offset = hdr[1 + hdr_index * 2 + 1];
- if ((duk_size_t) start_offset > DUK_HBUFFER_FIXED_GET_SIZE(buf)) {
- DUK_DD(DUK_DDPRINT("pc2line lookup failed: start_offset out of bounds (start_offset=%ld, buffer_size=%ld)",
- (long) start_offset, (long) DUK_HBUFFER_GET_SIZE((duk_hbuffer *) buf)));
- goto error;
- }
-
- /*
- * Iterate the bitstream (line diffs) until PC is reached
- */
-
- DUK_MEMZERO(bd_ctx, sizeof(*bd_ctx));
- bd_ctx->data = ((duk_uint8_t *) hdr) + start_offset;
- bd_ctx->length = (duk_size_t) (DUK_HBUFFER_FIXED_GET_SIZE(buf) - start_offset);
-
-#if 0
- DUK_DDD(DUK_DDDPRINT("pc2line lookup: pc=%ld -> hdr_index=%ld, pc_base=%ld, n=%ld, start_offset=%ld",
- (long) pc, (long) hdr_index, (long) pc_base, (long) n, (long) start_offset));
-#endif
-
- while (n > 0) {
-#if 0
- DUK_DDD(DUK_DDDPRINT("lookup: n=%ld, curr_line=%ld", (long) n, (long) curr_line));
-#endif
-
- if (duk_bd_decode_flag(bd_ctx)) {
- if (duk_bd_decode_flag(bd_ctx)) {
- if (duk_bd_decode_flag(bd_ctx)) {
- /* 1 1 1 <32 bits> */
- duk_uint_fast32_t t;
- t = duk_bd_decode(bd_ctx, 16); /* workaround: max nbits = 24 now */
- t = (t << 16) + duk_bd_decode(bd_ctx, 16);
- curr_line = t;
- } else {
- /* 1 1 0 <8 bits> */
- duk_uint_fast32_t t;
- t = duk_bd_decode(bd_ctx, 8);
- curr_line = curr_line + t - 0x80;
- }
- } else {
- /* 1 0 <2 bits> */
- duk_uint_fast32_t t;
- t = duk_bd_decode(bd_ctx, 2);
- curr_line = curr_line + t + 1;
- }
- } else {
- /* 0: no change */
- }
-
- n--;
- }
-
- DUK_DDD(DUK_DDDPRINT("pc2line lookup result: pc %ld -> line %ld", (long) pc, (long) curr_line));
- return curr_line;
-
- error:
- DUK_D(DUK_DPRINT("pc2line conversion failed for pc=%ld", (long) pc));
- return 0;
-}
-
-DUK_INTERNAL duk_uint_fast32_t duk_hobject_pc2line_query(duk_context *ctx, duk_idx_t idx_func, duk_uint_fast32_t pc) {
- duk_hbuffer_fixed *pc2line;
- duk_uint_fast32_t line;
-
- /* XXX: now that pc2line is used by the debugger quite heavily in
- * checked execution, this should be optimized to avoid value stack
- * and perhaps also implement some form of pc2line caching (see
- * future work in debugger.rst).
- */
-
- duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_PC2LINE);
- pc2line = (duk_hbuffer_fixed *) duk_get_hbuffer(ctx, -1);
- if (pc2line != NULL) {
- DUK_ASSERT(!DUK_HBUFFER_HAS_DYNAMIC((duk_hbuffer *) pc2line) && !DUK_HBUFFER_HAS_EXTERNAL((duk_hbuffer *) pc2line));
- line = duk__hobject_pc2line_query_raw((duk_hthread *) ctx, pc2line, (duk_uint_fast32_t) pc);
- } else {
- line = 0;
- }
- duk_pop(ctx);
-
- return line;
-}
-
-#endif /* DUK_USE_PC2LINE */
-#line 1 "duk_hobject_props.c"
-/*
- * Hobject property set/get functionality.
- *
- * This is very central functionality for size, performance, and compliance.
- * It is also rather intricate; see hobject-algorithms.rst for discussion on
- * the algorithms and memory-management.rst for discussion on refcounts and
- * side effect issues.
- *
- * Notes:
- *
- * - It might be tempting to assert "refcount nonzero" for objects
- * being operated on, but that's not always correct: objects with
- * a zero refcount may be operated on by the refcount implementation
- * (finalization) for instance. Hence, no refcount assertions are made.
- *
- * - Many operations (memory allocation, identifier operations, etc)
- * may cause arbitrary side effects (e.g. through GC and finalization).
- * These side effects may invalidate duk_tval pointers which point to
- * areas subject to reallocation (like value stack). Heap objects
- * themselves have stable pointers. Holding heap object pointers or
- * duk_tval copies is not problematic with respect to side effects;
- * care must be taken when holding and using argument duk_tval pointers.
- *
- * - If a finalizer is executed, it may operate on the the same object
- * we're currently dealing with. For instance, the finalizer might
- * delete a certain property which has already been looked up and
- * confirmed to exist. Ideally finalizers would be disabled if GC
- * happens during property access. At the moment property table realloc
- * disables finalizers, and all DECREFs may cause arbitrary changes so
- * handle DECREF carefully.
- *
- * - The order of operations for a DECREF matters. When DECREF is executed,
- * the entire object graph must be consistent; note that a refzero may
- * lead to a mark-and-sweep through a refcount finalizer.
- */
-
-/*
- * XXX: array indices are mostly typed as duk_uint32_t here; duk_uarridx_t
- * might be more appropriate.
- */
-
-/*
- * XXX: duk_uint_fast32_t should probably be used in many places here.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Local defines
- */
-
-#define DUK__NO_ARRAY_INDEX DUK_HSTRING_NO_ARRAY_INDEX
-
-/* hash probe sequence */
-#define DUK__HASH_INITIAL(hash,h_size) DUK_HOBJECT_HASH_INITIAL((hash),(h_size))
-#define DUK__HASH_PROBE_STEP(hash) DUK_HOBJECT_HASH_PROBE_STEP((hash))
-
-/* marker values for hash part */
-#define DUK__HASH_UNUSED DUK_HOBJECT_HASHIDX_UNUSED
-#define DUK__HASH_DELETED DUK_HOBJECT_HASHIDX_DELETED
-
-/* valstack space that suffices for all local calls, including recursion
- * of other than Duktape calls (getters etc)
- */
-#define DUK__VALSTACK_SPACE 10
-
-/* valstack space allocated especially for proxy lookup which does a
- * recursive property lookup
- */
-#define DUK__VALSTACK_PROXY_LOOKUP 20
-
-/*
- * Local prototypes
- */
-
-DUK_LOCAL_DECL duk_bool_t duk__check_arguments_map_for_get(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc);
-DUK_LOCAL_DECL void duk__check_arguments_map_for_put(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc, duk_bool_t throw_flag);
-DUK_LOCAL_DECL void duk__check_arguments_map_for_delete(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc);
-
-DUK_LOCAL_DECL duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr, duk_hobject *obj, duk_uint32_t old_len, duk_uint32_t new_len, duk_bool_t force_flag, duk_uint32_t *out_result_len);
-DUK_LOCAL_DECL duk_bool_t duk__handle_put_array_length(duk_hthread *thr, duk_hobject *obj);
-
-DUK_LOCAL_DECL duk_bool_t duk__get_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags);
-DUK_LOCAL_DECL duk_bool_t duk__get_own_propdesc_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_uint32_t arr_idx, duk_propdesc *out_desc, duk_small_uint_t flags);
-DUK_LOCAL duk_uint32_t duk__get_old_array_length(duk_hthread *thr, duk_hobject *obj, duk_propdesc *temp_desc);
-
-/*
- * Misc helpers
- */
-
-/* Convert a duk_tval number (caller checks) to a 32-bit index. Returns
- * DUK__NO_ARRAY_INDEX if the number is not whole or not a valid array
- * index.
- */
-/* XXX: for fastints, could use a variant which assumes a double duk_tval
- * (and doesn't need to check for fastint again).
- */
-DUK_LOCAL duk_uint32_t duk__tval_number_to_arr_idx(duk_tval *tv) {
- duk_double_t dbl;
- duk_uint32_t idx;
-
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
-
- /* -0 is accepted here as index 0 because ToString(-0) == "0" which is
- * in canonical form and thus an array index.
- */
- dbl = DUK_TVAL_GET_NUMBER(tv);
- idx = (duk_uint32_t) dbl;
- if ((duk_double_t) idx == dbl) {
- /* Is whole and within 32 bit range. If the value happens to be 0xFFFFFFFF,
- * it's not a valid array index but will then match DUK__NO_ARRAY_INDEX.
- */
- return idx;
- }
- return DUK__NO_ARRAY_INDEX;
-}
-
-#if defined(DUK_USE_FASTINT)
-/* Convert a duk_tval fastint (caller checks) to a 32-bit index. */
-DUK_LOCAL duk_uint32_t duk__tval_fastint_to_arr_idx(duk_tval *tv) {
- duk_int64_t t;
-
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv));
-
- t = DUK_TVAL_GET_FASTINT(tv);
- if ((t & ~0xffffffffULL) != 0) {
- /* Catches >0x100000000 and negative values. */
- return DUK__NO_ARRAY_INDEX;
- }
-
- /* If the value happens to be 0xFFFFFFFF, it's not a valid array index
- * but will then match DUK__NO_ARRAY_INDEX.
- */
- return (duk_uint32_t) t;
-}
-#endif /* DUK_USE_FASTINT */
-
-/* Push an arbitrary duk_tval to the stack, coerce it to string, and return
- * both a duk_hstring pointer and an array index (or DUK__NO_ARRAY_INDEX).
- */
-DUK_LOCAL duk_uint32_t duk__push_tval_to_hstring_arr_idx(duk_context *ctx, duk_tval *tv, duk_hstring **out_h) {
- duk_uint32_t arr_idx;
- duk_hstring *h;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(out_h != NULL);
-
- duk_push_tval(ctx, tv);
- duk_to_string(ctx, -1);
- h = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h != NULL);
- *out_h = h;
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(h);
- return arr_idx;
-}
-
-/* String is an own (virtual) property of a lightfunc. */
-DUK_LOCAL duk_bool_t duk__key_is_lightfunc_ownprop(duk_hthread *thr, duk_hstring *key) {
- DUK_UNREF(thr);
- return (key == DUK_HTHREAD_STRING_LENGTH(thr) ||
- key == DUK_HTHREAD_STRING_NAME(thr));
-}
-
-/*
- * Helpers for managing property storage size
- */
-
-/* Get default hash part size for a certain entry part size. */
-#if defined(DUK_USE_HOBJECT_HASH_PART)
-DUK_LOCAL duk_uint32_t duk__get_default_h_size(duk_uint32_t e_size) {
- DUK_ASSERT(e_size <= DUK_HOBJECT_MAX_PROPERTIES);
-
- if (e_size >= DUK_HOBJECT_E_USE_HASH_LIMIT) {
- duk_uint32_t res;
-
- /* result: hash_prime(floor(1.2 * e_size)) */
- res = duk_util_get_hash_prime(e_size + e_size / DUK_HOBJECT_H_SIZE_DIVISOR);
-
- /* if fails, e_size will be zero = not an issue, except performance-wise */
- DUK_ASSERT(res == 0 || res > e_size);
- return res;
- } else {
- return 0;
- }
-}
-#endif /* USE_PROP_HASH_PART */
-
-/* Get minimum entry part growth for a certain size. */
-DUK_LOCAL duk_uint32_t duk__get_min_grow_e(duk_uint32_t e_size) {
- duk_uint32_t res;
-
- DUK_ASSERT(e_size <= DUK_HOBJECT_MAX_PROPERTIES);
-
- res = (e_size + DUK_HOBJECT_E_MIN_GROW_ADD) / DUK_HOBJECT_E_MIN_GROW_DIVISOR;
- DUK_ASSERT(res >= 1); /* important for callers */
- return res;
-}
-
-/* Get minimum array part growth for a certain size. */
-DUK_LOCAL duk_uint32_t duk__get_min_grow_a(duk_uint32_t a_size) {
- duk_uint32_t res;
-
- DUK_ASSERT((duk_size_t) a_size <= DUK_HOBJECT_MAX_PROPERTIES);
-
- res = (a_size + DUK_HOBJECT_A_MIN_GROW_ADD) / DUK_HOBJECT_A_MIN_GROW_DIVISOR;
- DUK_ASSERT(res >= 1); /* important for callers */
- return res;
-}
-
-/* Count actually used entry part entries (non-NULL keys). */
-DUK_LOCAL duk_uint32_t duk__count_used_e_keys(duk_hthread *thr, duk_hobject *obj) {
- duk_uint_fast32_t i;
- duk_uint_fast32_t n = 0;
- duk_hstring **e;
-
- DUK_ASSERT(obj != NULL);
- DUK_UNREF(thr);
-
- e = DUK_HOBJECT_E_GET_KEY_BASE(thr->heap, obj);
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- if (*e++) {
- n++;
- }
- }
- return (duk_uint32_t) n;
-}
-
-/* Count actually used array part entries and array minimum size.
- * NOTE: 'out_min_size' can be computed much faster by starting from the
- * end and breaking out early when finding first used entry, but this is
- * not needed now.
- */
-DUK_LOCAL void duk__compute_a_stats(duk_hthread *thr, duk_hobject *obj, duk_uint32_t *out_used, duk_uint32_t *out_min_size) {
- duk_uint_fast32_t i;
- duk_uint_fast32_t used = 0;
- duk_uint_fast32_t highest_idx = (duk_uint_fast32_t) -1; /* see below */
- duk_tval *a;
-
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(out_used != NULL);
- DUK_ASSERT(out_min_size != NULL);
- DUK_UNREF(thr);
-
- a = DUK_HOBJECT_A_GET_BASE(thr->heap, obj);
- for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
- duk_tval *tv = a++;
- if (!DUK_TVAL_IS_UNUSED(tv)) {
- used++;
- highest_idx = i;
- }
- }
-
- /* Initial value for highest_idx is -1 coerced to unsigned. This
- * is a bit odd, but (highest_idx + 1) will then wrap to 0 below
- * for out_min_size as intended.
- */
-
- *out_used = used;
- *out_min_size = highest_idx + 1; /* 0 if no used entries */
-}
-
-/* Check array density and indicate whether or not the array part should be abandoned. */
-DUK_LOCAL duk_bool_t duk__abandon_array_density_check(duk_uint32_t a_used, duk_uint32_t a_size) {
- /*
- * Array abandon check; abandon if:
- *
- * new_used / new_size < limit
- * new_used < limit * new_size || limit is 3 bits fixed point
- * new_used < limit' / 8 * new_size || *8
- * 8*new_used < limit' * new_size || :8
- * new_used < limit' * (new_size / 8)
- *
- * Here, new_used = a_used, new_size = a_size.
- *
- * Note: some callers use approximate values for a_used and/or a_size
- * (e.g. dropping a '+1' term). This doesn't affect the usefulness
- * of the check, but may confuse debugging.
- */
-
- return (a_used < DUK_HOBJECT_A_ABANDON_LIMIT * (a_size >> 3));
-}
-
-/* Fast check for extending array: check whether or not a slow density check is required. */
-DUK_LOCAL duk_bool_t duk__abandon_array_slow_check_required(duk_uint32_t arr_idx, duk_uint32_t old_size) {
- /*
- * In a fast check we assume old_size equals old_used (i.e., existing
- * array is fully dense).
- *
- * Slow check if:
- *
- * (new_size - old_size) / old_size > limit
- * new_size - old_size > limit * old_size
- * new_size > (1 + limit) * old_size || limit' is 3 bits fixed point
- * new_size > (1 + (limit' / 8)) * old_size || * 8
- * 8 * new_size > (8 + limit') * old_size || : 8
- * new_size > (8 + limit') * (old_size / 8)
- * new_size > limit'' * (old_size / 8) || limit'' = 9 -> max 25% increase
- * arr_idx + 1 > limit'' * (old_size / 8)
- *
- * This check doesn't work well for small values, so old_size is rounded
- * up for the check (and the '+ 1' of arr_idx can be ignored in practice):
- *
- * arr_idx > limit'' * ((old_size + 7) / 8)
- */
-
- return (arr_idx > DUK_HOBJECT_A_FAST_RESIZE_LIMIT * ((old_size + 7) >> 3));
-}
-
-/*
- * Proxy helpers
- */
-
-#if defined(DUK_USE_ES6_PROXY)
-DUK_INTERNAL duk_bool_t duk_hobject_proxy_check(duk_hthread *thr, duk_hobject *obj, duk_hobject **out_target, duk_hobject **out_handler) {
- duk_tval *tv_target;
- duk_tval *tv_handler;
- duk_hobject *h_target;
- duk_hobject *h_handler;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(out_target != NULL);
- DUK_ASSERT(out_handler != NULL);
-
- /* Caller doesn't need to check exotic proxy behavior (but does so for
- * some fast paths).
- */
- if (DUK_LIKELY(!DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj))) {
- return 0;
- }
-
- tv_handler = duk_hobject_find_existing_entry_tval_ptr(thr->heap, obj, DUK_HTHREAD_STRING_INT_HANDLER(thr));
- if (!tv_handler) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REVOKED);
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_handler));
- h_handler = DUK_TVAL_GET_OBJECT(tv_handler);
- DUK_ASSERT(h_handler != NULL);
- *out_handler = h_handler;
- tv_handler = NULL; /* avoid issues with relocation */
-
- tv_target = duk_hobject_find_existing_entry_tval_ptr(thr->heap, obj, DUK_HTHREAD_STRING_INT_TARGET(thr));
- if (!tv_target) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REVOKED);
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_target));
- h_target = DUK_TVAL_GET_OBJECT(tv_target);
- DUK_ASSERT(h_target != NULL);
- *out_target = h_target;
- tv_target = NULL; /* avoid issues with relocation */
-
- return 1;
-}
-#endif /* DUK_USE_ES6_PROXY */
-
-/* Get Proxy target object. If the argument is not a Proxy, return it as is.
- * If a Proxy is revoked, an error is thrown.
- */
-#if defined(DUK_USE_ES6_PROXY)
-DUK_INTERNAL duk_hobject *duk_hobject_resolve_proxy_target(duk_hthread *thr, duk_hobject *obj) {
- duk_hobject *h_target;
- duk_hobject *h_handler;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
-
- /* Resolve Proxy targets until Proxy chain ends. No explicit check for
- * a Proxy loop: user code cannot create such a loop without tweaking
- * internal properties directly.
- */
-
- while (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj))) {
- if (duk_hobject_proxy_check(thr, obj, &h_target, &h_handler)) {
- DUK_ASSERT(h_target != NULL);
- obj = h_target;
- } else {
- break;
- }
- }
-
- DUK_ASSERT(obj != NULL);
- return obj;
-}
-#endif /* DUK_USE_ES6_PROXY */
-
-#if defined(DUK_USE_ES6_PROXY)
-DUK_LOCAL duk_bool_t duk__proxy_check_prop(duk_hthread *thr, duk_hobject *obj, duk_small_uint_t stridx_trap, duk_tval *tv_key, duk_hobject **out_target) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *h_handler;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(tv_key != NULL);
- DUK_ASSERT(out_target != NULL);
-
- if (!duk_hobject_proxy_check(thr, obj, out_target, &h_handler)) {
- return 0;
- }
- DUK_ASSERT(*out_target != NULL);
- DUK_ASSERT(h_handler != NULL);
-
- /* XXX: At the moment Duktape accesses internal keys like _Finalizer using a
- * normal property set/get which would allow a proxy handler to interfere with
- * such behavior and to get access to internal key strings. This is not a problem
- * as such because internal key strings can be created in other ways too (e.g.
- * through buffers). The best fix is to change Duktape internal lookups to
- * skip proxy behavior. Until that, internal property accesses bypass the
- * proxy and are applied to the target (as if the handler did not exist).
- * This has some side effects, see test-bi-proxy-internal-keys.js.
- */
-
- if (DUK_TVAL_IS_STRING(tv_key)) {
- duk_hstring *h_key = (duk_hstring *) DUK_TVAL_GET_STRING(tv_key);
- DUK_ASSERT(h_key != NULL);
- if (DUK_HSTRING_HAS_INTERNAL(h_key)) {
- DUK_DDD(DUK_DDDPRINT("internal key, skip proxy handler and apply to target"));
- return 0;
- }
- }
-
- /* The handler is looked up with a normal property lookup; it may be an
- * accessor or the handler object itself may be a proxy object. If the
- * handler is a proxy, we need to extend the valstack as we make a
- * recursive proxy check without a function call in between (in fact
- * there is no limit to the potential recursion here).
- *
- * (For sanity, proxy creation rejects another proxy object as either
- * the handler or the target at the moment so recursive proxy cases
- * are not realized now.)
- */
-
- /* XXX: C recursion limit if proxies are allowed as handler/target values */
-
- duk_require_stack(ctx, DUK__VALSTACK_PROXY_LOOKUP);
- duk_push_hobject(ctx, h_handler);
- if (duk_get_prop_stridx(ctx, -1, stridx_trap)) {
- /* -> [ ... handler trap ] */
- duk_insert(ctx, -2); /* -> [ ... trap handler ] */
-
- /* stack prepped for func call: [ ... trap handler ] */
- return 1;
- } else {
- duk_pop_2(ctx);
- return 0;
- }
-}
-#endif /* DUK_USE_ES6_PROXY */
-
-/*
- * Reallocate property allocation, moving properties to the new allocation.
- *
- * Includes key compaction, rehashing, and can also optionally abandoning
- * the array part, 'migrating' array entries into the beginning of the
- * new entry part. Arguments are not validated here, so e.g. new_h_size
- * MUST be a valid prime.
- *
- * There is no support for in-place reallocation or just compacting keys
- * without resizing the property allocation. This is intentional to keep
- * code size minimal.
- *
- * The implementation is relatively straightforward, except for the array
- * abandonment process. Array abandonment requires that new string keys
- * are interned, which may trigger GC. All keys interned so far must be
- * reachable for GC at all times; valstack is used for that now.
- *
- * Also, a GC triggered during this reallocation process must not interfere
- * with the object being resized. This is currently controlled by using
- * heap->mark_and_sweep_base_flags to indicate that no finalizers will be
- * executed (as they can affect ANY object) and no objects are compacted
- * (it would suffice to protect this particular object only, though).
- *
- * Note: a non-checked variant would be nice but is a bit tricky to
- * implement for the array abandonment process. It's easy for
- * everything else.
- *
- * Note: because we need to potentially resize the valstack (as part
- * of abandoning the array part), any tval pointers to the valstack
- * will become invalid after this call.
- */
-
-DUK_LOCAL
-void duk__realloc_props(duk_hthread *thr,
- duk_hobject *obj,
- duk_uint32_t new_e_size,
- duk_uint32_t new_a_size,
- duk_uint32_t new_h_size,
- duk_bool_t abandon_array) {
- duk_context *ctx = (duk_context *) thr;
-#ifdef DUK_USE_MARK_AND_SWEEP
- duk_small_uint_t prev_mark_and_sweep_base_flags;
-#endif
- duk_uint32_t new_alloc_size;
- duk_uint32_t new_e_size_adjusted;
- duk_uint8_t *new_p;
- duk_hstring **new_e_k;
- duk_propvalue *new_e_pv;
- duk_uint8_t *new_e_f;
- duk_tval *new_a;
- duk_uint32_t *new_h;
- duk_uint32_t new_e_next;
- duk_uint_fast32_t i;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(!abandon_array || new_a_size == 0); /* if abandon_array, new_a_size must be 0 */
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL || (DUK_HOBJECT_GET_ESIZE(obj) == 0 && DUK_HOBJECT_GET_ASIZE(obj) == 0));
- DUK_ASSERT(new_h_size == 0 || new_h_size >= new_e_size); /* required to guarantee success of rehashing,
- * intentionally use unadjusted new_e_size
- */
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj));
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /*
- * Pre resize assertions.
- */
-
-#ifdef DUK_USE_ASSERTIONS
- /* XXX: pre-checks (such as no duplicate keys) */
-#endif
-
- /*
- * For property layout 1, tweak e_size to ensure that the whole entry
- * part (key + val + flags) is a suitable multiple for alignment
- * (platform specific).
- *
- * Property layout 2 does not require this tweaking and is preferred
- * on low RAM platforms requiring alignment.
- */
-
-#if defined(DUK_USE_HOBJECT_LAYOUT_2) || defined(DUK_USE_HOBJECT_LAYOUT_3)
- DUK_DDD(DUK_DDDPRINT("using layout 2 or 3, no need to pad e_size: %ld", (long) new_e_size));
- new_e_size_adjusted = new_e_size;
-#elif defined(DUK_USE_HOBJECT_LAYOUT_1) && (DUK_HOBJECT_ALIGN_TARGET == 1)
- DUK_DDD(DUK_DDDPRINT("using layout 1, but no need to pad e_size: %ld", (long) new_e_size));
- new_e_size_adjusted = new_e_size;
-#elif defined(DUK_USE_HOBJECT_LAYOUT_1) && ((DUK_HOBJECT_ALIGN_TARGET == 4) || (DUK_HOBJECT_ALIGN_TARGET == 8))
- new_e_size_adjusted = (new_e_size + DUK_HOBJECT_ALIGN_TARGET - 1) & (~(DUK_HOBJECT_ALIGN_TARGET - 1));
- DUK_DDD(DUK_DDDPRINT("using layout 1, and alignment target is %ld, adjusted e_size: %ld -> %ld",
- (long) DUK_HOBJECT_ALIGN_TARGET, (long) new_e_size, (long) new_e_size_adjusted));
- DUK_ASSERT(new_e_size_adjusted >= new_e_size);
-#else
-#error invalid hobject layout defines
-#endif
-
- /*
- * Debug logging after adjustment.
- */
-
- DUK_DDD(DUK_DDDPRINT("attempt to resize hobject %p props (%ld -> %ld bytes), from {p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld} to "
- "{e_size=%ld,a_size=%ld,h_size=%ld}, abandon_array=%ld, unadjusted new_e_size=%ld",
- (void *) obj,
- (long) DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj),
- DUK_HOBJECT_GET_ASIZE(obj),
- DUK_HOBJECT_GET_HSIZE(obj)),
- (long) DUK_HOBJECT_P_COMPUTE_SIZE(new_e_size_adjusted, new_a_size, new_h_size),
- (void *) DUK_HOBJECT_GET_PROPS(thr->heap, obj),
- (long) DUK_HOBJECT_GET_ESIZE(obj),
- (long) DUK_HOBJECT_GET_ENEXT(obj),
- (long) DUK_HOBJECT_GET_ASIZE(obj),
- (long) DUK_HOBJECT_GET_HSIZE(obj),
- (long) new_e_size_adjusted,
- (long) new_a_size,
- (long) new_h_size,
- (long) abandon_array,
- (long) new_e_size));
-
- /*
- * Property count check. This is the only point where we ensure that
- * we don't get more (allocated) property space that we can handle.
- * There aren't hard limits as such, but some algorithms fail (e.g.
- * finding next higher prime, selecting hash part size) if we get too
- * close to the 4G property limit.
- *
- * Since this works based on allocation size (not actually used size),
- * the limit is a bit approximate but good enough in practice.
- */
-
- if (new_e_size_adjusted + new_a_size > DUK_HOBJECT_MAX_PROPERTIES) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
-
- /*
- * Compute new alloc size and alloc new area.
- *
- * The new area is allocated as a dynamic buffer and placed into the
- * valstack for reachability. The actual buffer is then detached at
- * the end.
- *
- * Note: heap_mark_and_sweep_base_flags are altered here to ensure
- * no-one touches this object while we're resizing and rehashing it.
- * The flags must be reset on every exit path after it. Finalizers
- * and compaction is prevented currently for all objects while it
- * would be enough to restrict it only for the current object.
- */
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- prev_mark_and_sweep_base_flags = thr->heap->mark_and_sweep_base_flags;
- thr->heap->mark_and_sweep_base_flags |=
- DUK_MS_FLAG_NO_FINALIZERS | /* avoid attempts to add/remove object keys */
- DUK_MS_FLAG_NO_OBJECT_COMPACTION; /* avoid attempt to compact the current object */
-#endif
-
- new_alloc_size = DUK_HOBJECT_P_COMPUTE_SIZE(new_e_size_adjusted, new_a_size, new_h_size);
- DUK_DDD(DUK_DDDPRINT("new hobject allocation size is %ld", (long) new_alloc_size));
- if (new_alloc_size == 0) {
- /* for zero size, don't push anything on valstack */
- DUK_ASSERT(new_e_size_adjusted == 0);
- DUK_ASSERT(new_a_size == 0);
- DUK_ASSERT(new_h_size == 0);
- new_p = NULL;
- } else {
- /* This may trigger mark-and-sweep with arbitrary side effects,
- * including an attempted resize of the object we're resizing,
- * executing a finalizer which may add or remove properties of
- * the object we're resizing etc.
- */
-
- /* Note: buffer is dynamic so that we can 'steal' the actual
- * allocation later.
- */
-
- new_p = (duk_uint8_t *) duk_push_dynamic_buffer(ctx, new_alloc_size); /* errors out if out of memory */
- DUK_ASSERT(new_p != NULL); /* since new_alloc_size > 0 */
- }
-
- /* Set up pointers to the new property area: this is hidden behind a macro
- * because it is memory layout specific.
- */
- DUK_HOBJECT_P_SET_REALLOC_PTRS(new_p, new_e_k, new_e_pv, new_e_f, new_a, new_h,
- new_e_size_adjusted, new_a_size, new_h_size);
- DUK_UNREF(new_h); /* happens when hash part dropped */
- new_e_next = 0;
-
- /* if new_p == NULL, all of these pointers are NULL */
- DUK_ASSERT((new_p != NULL) ||
- (new_e_k == NULL && new_e_pv == NULL && new_e_f == NULL &&
- new_a == NULL && new_h == NULL));
-
- DUK_DDD(DUK_DDDPRINT("new alloc size %ld, new_e_k=%p, new_e_pv=%p, new_e_f=%p, new_a=%p, new_h=%p",
- (long) new_alloc_size, (void *) new_e_k, (void *) new_e_pv, (void *) new_e_f,
- (void *) new_a, (void *) new_h));
-
- /*
- * Migrate array to start of entries if requested.
- *
- * Note: from an enumeration perspective the order of entry keys matters.
- * Array keys should appear wherever they appeared before the array abandon
- * operation.
- */
-
- if (abandon_array) {
- /*
- * Note: assuming new_a_size == 0, and that entry part contains
- * no conflicting keys, refcounts do not need to be adjusted for
- * the values, as they remain exactly the same.
- *
- * The keys, however, need to be interned, incref'd, and be
- * reachable for GC. Any intern attempt may trigger a GC and
- * claim any non-reachable strings, so every key must be reachable
- * at all times.
- *
- * A longjmp must not occur here, as the new_p allocation would
- * be freed without these keys being decref'd, hence the messy
- * decref handling if intern fails.
- */
- DUK_ASSERT(new_a_size == 0);
-
- for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
- duk_tval *tv1;
- duk_tval *tv2;
- duk_hstring *key;
-
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
-
- tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- if (DUK_TVAL_IS_UNUSED(tv1)) {
- continue;
- }
-
- DUK_ASSERT(new_p != NULL && new_e_k != NULL &&
- new_e_pv != NULL && new_e_f != NULL);
-
- /*
- * Intern key via the valstack to ensure reachability behaves
- * properly. We must avoid longjmp's here so use non-checked
- * primitives.
- *
- * Note: duk_check_stack() potentially reallocs the valstack,
- * invalidating any duk_tval pointers to valstack. Callers
- * must be careful.
- */
-
- /* never shrinks; auto-adds DUK_VALSTACK_INTERNAL_EXTRA, which is generous */
- if (!duk_check_stack(ctx, 1)) {
- goto abandon_error;
- }
- DUK_ASSERT_VALSTACK_SPACE(thr, 1);
- key = duk_heap_string_intern_u32(thr->heap, i);
- if (!key) {
- goto abandon_error;
- }
- duk_push_hstring(ctx, key); /* keep key reachable for GC etc; guaranteed not to fail */
-
- /* key is now reachable in the valstack */
-
- DUK_HSTRING_INCREF(thr, key); /* second incref for the entry reference */
- new_e_k[new_e_next] = key;
- tv2 = &new_e_pv[new_e_next].v; /* array entries are all plain values */
- DUK_TVAL_SET_TVAL(tv2, tv1);
- new_e_f[new_e_next] = DUK_PROPDESC_FLAG_WRITABLE |
- DUK_PROPDESC_FLAG_ENUMERABLE |
- DUK_PROPDESC_FLAG_CONFIGURABLE;
- new_e_next++;
-
- /* Note: new_e_next matches pushed temp key count, and nothing can
- * fail above between the push and this point.
- */
- }
-
- DUK_DDD(DUK_DDDPRINT("abandon array: pop %ld key temps from valstack", (long) new_e_next));
- duk_pop_n(ctx, new_e_next);
- }
-
- /*
- * Copy keys and values in the entry part (compacting them at the same time).
- */
-
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- duk_hstring *key;
-
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
-
- key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i);
- if (!key) {
- continue;
- }
-
- DUK_ASSERT(new_p != NULL && new_e_k != NULL &&
- new_e_pv != NULL && new_e_f != NULL);
-
- new_e_k[new_e_next] = key;
- new_e_pv[new_e_next] = DUK_HOBJECT_E_GET_VALUE(thr->heap, obj, i);
- new_e_f[new_e_next] = DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, i);
- new_e_next++;
- }
- /* the entries [new_e_next, new_e_size_adjusted[ are left uninitialized on purpose (ok, not gc reachable) */
-
- /*
- * Copy array elements to new array part.
- */
-
- if (new_a_size > DUK_HOBJECT_GET_ASIZE(obj)) {
- /* copy existing entries as is */
- DUK_ASSERT(new_p != NULL && new_a != NULL);
- if (DUK_HOBJECT_GET_ASIZE(obj) > 0) {
- /* Avoid zero copy with an invalid pointer. If obj->p is NULL,
- * the 'new_a' pointer will be invalid which is not allowed even
- * when copy size is zero.
- */
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(obj) > 0);
- DUK_MEMCPY((void *) new_a, (void *) DUK_HOBJECT_A_GET_BASE(thr->heap, obj), sizeof(duk_tval) * DUK_HOBJECT_GET_ASIZE(obj));
- }
-
- /* fill new entries with -unused- (required, gc reachable) */
- for (i = DUK_HOBJECT_GET_ASIZE(obj); i < new_a_size; i++) {
- duk_tval *tv = &new_a[i];
- DUK_TVAL_SET_UNUSED(tv);
- }
- } else {
-#ifdef DUK_USE_ASSERTIONS
- /* caller must have decref'd values above new_a_size (if that is necessary) */
- if (!abandon_array) {
- for (i = new_a_size; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
- duk_tval *tv;
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
-
- /* current assertion is quite strong: decref's and set to unused */
- DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv));
- }
- }
-#endif
- if (new_a_size > 0) {
- /* Avoid zero copy with an invalid pointer. If obj->p is NULL,
- * the 'new_a' pointer will be invalid which is not allowed even
- * when copy size is zero.
- */
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
- DUK_ASSERT(new_a_size > 0);
- DUK_MEMCPY((void *) new_a, (void *) DUK_HOBJECT_A_GET_BASE(thr->heap, obj), sizeof(duk_tval) * new_a_size);
- }
- }
-
- /*
- * Rebuild the hash part always from scratch (guaranteed to finish).
- *
- * Any resize of hash part requires rehashing. In addition, by rehashing
- * get rid of any elements marked deleted (DUK__HASH_DELETED) which is critical
- * to ensuring the hash part never fills up.
- */
-
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- if (DUK_UNLIKELY(new_h_size > 0)) {
- DUK_ASSERT(new_h != NULL);
-
- /* fill new_h with u32 0xff = UNUSED */
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, obj) != NULL);
- DUK_ASSERT(new_h_size > 0);
- DUK_MEMSET(new_h, 0xff, sizeof(duk_uint32_t) * new_h_size);
-
- DUK_ASSERT(new_e_next <= new_h_size); /* equality not actually possible */
- for (i = 0; i < new_e_next; i++) {
- duk_hstring *key = new_e_k[i];
- duk_uint32_t j, step;
-
- DUK_ASSERT(key != NULL);
- j = DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), new_h_size);
- step = DUK__HASH_PROBE_STEP(DUK_HSTRING_GET_HASH(key));
-
- for (;;) {
- DUK_ASSERT(new_h[j] != DUK__HASH_DELETED); /* should never happen */
- if (new_h[j] == DUK__HASH_UNUSED) {
- DUK_DDD(DUK_DDDPRINT("rebuild hit %ld -> %ld", (long) j, (long) i));
- new_h[j] = i;
- break;
- }
- DUK_DDD(DUK_DDDPRINT("rebuild miss %ld, step %ld", (long) j, (long) step));
- j = (j + step) % new_h_size;
-
- /* guaranteed to finish */
- DUK_ASSERT(j != (duk_uint32_t) DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), new_h_size));
- }
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("no hash part, no rehash"));
- }
-#endif /* DUK_USE_HOBJECT_HASH_PART */
-
- /*
- * Nice debug log.
- */
-
- DUK_DD(DUK_DDPRINT("resized hobject %p props (%ld -> %ld bytes), from {p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld} to "
- "{p=%p,e_size=%ld,e_next=%ld,a_size=%ld,h_size=%ld}, abandon_array=%ld, unadjusted new_e_size=%ld",
- (void *) obj,
- (long) DUK_HOBJECT_P_COMPUTE_SIZE(DUK_HOBJECT_GET_ESIZE(obj),
- DUK_HOBJECT_GET_ASIZE(obj),
- DUK_HOBJECT_GET_HSIZE(obj)),
- (long) new_alloc_size,
- (void *) DUK_HOBJECT_GET_PROPS(thr->heap, obj),
- (long) DUK_HOBJECT_GET_ESIZE(obj),
- (long) DUK_HOBJECT_GET_ENEXT(obj),
- (long) DUK_HOBJECT_GET_ASIZE(obj),
- (long) DUK_HOBJECT_GET_HSIZE(obj),
- (void *) new_p,
- (long) new_e_size_adjusted,
- (long) new_e_next,
- (long) new_a_size,
- (long) new_h_size,
- (long) abandon_array,
- (long) new_e_size));
-
- /*
- * All done, switch properties ('p') allocation to new one.
- */
-
- DUK_FREE(thr->heap, DUK_HOBJECT_GET_PROPS(thr->heap, obj)); /* NULL obj->p is OK */
- DUK_HOBJECT_SET_PROPS(thr->heap, obj, new_p);
- DUK_HOBJECT_SET_ESIZE(obj, new_e_size_adjusted);
- DUK_HOBJECT_SET_ENEXT(obj, new_e_next);
- DUK_HOBJECT_SET_ASIZE(obj, new_a_size);
- DUK_HOBJECT_SET_HSIZE(obj, new_h_size);
-
- if (new_p) {
- /*
- * Detach actual buffer from dynamic buffer in valstack, and
- * pop it from the stack.
- *
- * XXX: the buffer object is certainly not reachable at this point,
- * so it would be nice to free it forcibly even with only
- * mark-and-sweep enabled. Not a big issue though.
- */
- (void) duk_steal_buffer(ctx, -1, NULL);
- duk_pop(ctx);
- } else {
- DUK_ASSERT(new_alloc_size == 0);
- /* no need to pop, nothing was pushed */
- }
-
- /* clear array part flag only after switching */
- if (abandon_array) {
- DUK_HOBJECT_CLEAR_ARRAY_PART(obj);
- }
-
- DUK_DDD(DUK_DDDPRINT("resize result: %!O", (duk_heaphdr *) obj));
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- thr->heap->mark_and_sweep_base_flags = prev_mark_and_sweep_base_flags;
-#endif
-
- /*
- * Post resize assertions.
- */
-
-#ifdef DUK_USE_ASSERTIONS
- /* XXX: post-checks (such as no duplicate keys) */
-#endif
- return;
-
- /*
- * Abandon array failed, need to decref keys already inserted
- * into the beginning of new_e_k before unwinding valstack.
- */
-
- abandon_error:
- DUK_D(DUK_DPRINT("hobject resize failed during abandon array, decref keys"));
- i = new_e_next;
- while (i > 0) {
- i--;
- DUK_ASSERT(new_e_k != NULL);
- DUK_ASSERT(new_e_k[i] != NULL);
- DUK_HSTRING_DECREF(thr, new_e_k[i]); /* side effects */
- }
-
-#ifdef DUK_USE_MARK_AND_SWEEP
- thr->heap->mark_and_sweep_base_flags = prev_mark_and_sweep_base_flags;
-#endif
-
- DUK_ERROR_ALLOC_DEFMSG(thr);
-}
-
-/*
- * Helpers to resize properties allocation on specific needs.
- */
-
-/* Grow entry part allocation for one additional entry. */
-DUK_LOCAL void duk__grow_props_for_new_entry_item(duk_hthread *thr, duk_hobject *obj) {
- duk_uint32_t old_e_used; /* actually used, non-NULL entries */
- duk_uint32_t new_e_size;
- duk_uint32_t new_a_size;
- duk_uint32_t new_h_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
-
- /* Duktape 0.11.0 and prior tried to optimize the resize by not
- * counting the number of actually used keys prior to the resize.
- * This worked mostly well but also caused weird leak-like behavior
- * as in: test-bug-object-prop-alloc-unbounded.js. So, now we count
- * the keys explicitly to compute the new entry part size.
- */
-
- old_e_used = duk__count_used_e_keys(thr, obj);
- new_e_size = old_e_used + duk__get_min_grow_e(old_e_used);
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- new_h_size = duk__get_default_h_size(new_e_size);
-#else
- new_h_size = 0;
-#endif
- new_a_size = DUK_HOBJECT_GET_ASIZE(obj);
- DUK_ASSERT(new_e_size >= old_e_used + 1); /* duk__get_min_grow_e() is always >= 1 */
-
- duk__realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 0);
-}
-
-/* Grow array part for a new highest array index. */
-DUK_LOCAL void duk__grow_props_for_array_item(duk_hthread *thr, duk_hobject *obj, duk_uint32_t highest_arr_idx) {
- duk_uint32_t new_e_size;
- duk_uint32_t new_a_size;
- duk_uint32_t new_h_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(highest_arr_idx >= DUK_HOBJECT_GET_ASIZE(obj));
-
- /* minimum new length is highest_arr_idx + 1 */
-
- new_e_size = DUK_HOBJECT_GET_ESIZE(obj);
- new_h_size = DUK_HOBJECT_GET_HSIZE(obj);
- new_a_size = highest_arr_idx + duk__get_min_grow_a(highest_arr_idx);
- DUK_ASSERT(new_a_size >= highest_arr_idx + 1); /* duk__get_min_grow_a() is always >= 1 */
-
- duk__realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 0);
-}
-
-/* Abandon array part, moving array entries into entries part.
- * This requires a props resize, which is a heavy operation.
- * We also compact the entries part while we're at it, although
- * this is not strictly required.
- */
-DUK_LOCAL void duk__abandon_array_checked(duk_hthread *thr, duk_hobject *obj) {
- duk_uint32_t new_e_size;
- duk_uint32_t new_a_size;
- duk_uint32_t new_h_size;
- duk_uint32_t e_used; /* actually used, non-NULL keys */
- duk_uint32_t a_used;
- duk_uint32_t a_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
-
- e_used = duk__count_used_e_keys(thr, obj);
- duk__compute_a_stats(thr, obj, &a_used, &a_size);
-
- /*
- * Must guarantee all actually used array entries will fit into
- * new entry part. Add one growth step to ensure we don't run out
- * of space right away.
- */
-
- new_e_size = e_used + a_used;
- new_e_size = new_e_size + duk__get_min_grow_e(new_e_size);
- new_a_size = 0;
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- new_h_size = duk__get_default_h_size(new_e_size);
-#else
- new_h_size = 0;
-#endif
-
- DUK_DD(DUK_DDPRINT("abandon array part for hobject %p, "
- "array stats before: e_used=%ld, a_used=%ld, a_size=%ld; "
- "resize to e_size=%ld, a_size=%ld, h_size=%ld",
- (void *) obj, (long) e_used, (long) a_used, (long) a_size,
- (long) new_e_size, (long) new_a_size, (long) new_h_size));
-
- duk__realloc_props(thr, obj, new_e_size, new_a_size, new_h_size, 1);
-}
-
-/*
- * Compact an object. Minimizes allocation size for objects which are
- * not likely to be extended. This is useful for internal and non-
- * extensible objects, but can also be called for non-extensible objects.
- * May abandon the array part if it is computed to be too sparse.
- *
- * This call is relatively expensive, as it needs to scan both the
- * entries and the array part.
- *
- * The call may fail due to allocation error.
- */
-
-DUK_INTERNAL void duk_hobject_compact_props(duk_hthread *thr, duk_hobject *obj) {
- duk_uint32_t e_size; /* currently used -> new size */
- duk_uint32_t a_size; /* currently required */
- duk_uint32_t a_used; /* actually used */
- duk_uint32_t h_size;
- duk_bool_t abandon_array;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) {
- DUK_DD(DUK_DDPRINT("ignore attempt to compact a rom object"));
- return;
- }
-#endif
-
- e_size = duk__count_used_e_keys(thr, obj);
- duk__compute_a_stats(thr, obj, &a_used, &a_size);
-
- DUK_DD(DUK_DDPRINT("compacting hobject, used e keys %ld, used a keys %ld, min a size %ld, "
- "resized array density would be: %ld/%ld = %lf",
- (long) e_size, (long) a_used, (long) a_size,
- (long) a_used, (long) a_size,
- (double) a_used / (double) a_size));
-
- if (duk__abandon_array_density_check(a_used, a_size)) {
- DUK_DD(DUK_DDPRINT("decided to abandon array during compaction, a_used=%ld, a_size=%ld",
- (long) a_used, (long) a_size));
- abandon_array = 1;
- e_size += a_used;
- a_size = 0;
- } else {
- DUK_DD(DUK_DDPRINT("decided to keep array during compaction"));
- abandon_array = 0;
- }
-
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- if (e_size >= DUK_HOBJECT_E_USE_HASH_LIMIT) {
- h_size = duk__get_default_h_size(e_size);
- } else {
- h_size = 0;
- }
-#else
- h_size = 0;
-#endif
-
- DUK_DD(DUK_DDPRINT("compacting hobject -> new e_size %ld, new a_size=%ld, new h_size=%ld, abandon_array=%ld",
- (long) e_size, (long) a_size, (long) h_size, (long) abandon_array));
-
- duk__realloc_props(thr, obj, e_size, a_size, h_size, abandon_array);
-}
-
-/*
- * Find an existing key from entry part either by linear scan or by
- * using the hash index (if it exists).
- *
- * Sets entry index (and possibly the hash index) to output variables,
- * which allows the caller to update the entry and hash entries in-place.
- * If entry is not found, both values are set to -1. If entry is found
- * but there is no hash part, h_idx is set to -1.
- */
-
-DUK_INTERNAL void duk_hobject_find_existing_entry(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *e_idx, duk_int_t *h_idx) {
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(e_idx != NULL);
- DUK_ASSERT(h_idx != NULL);
- DUK_UNREF(heap);
-
- if (DUK_LIKELY(DUK_HOBJECT_GET_HSIZE(obj) == 0))
- {
- /* Linear scan: more likely because most objects are small.
- * This is an important fast path.
- *
- * XXX: this might be worth inlining for property lookups.
- */
- duk_uint_fast32_t i;
- duk_uint_fast32_t n;
- duk_hstring **h_keys_base;
- DUK_DDD(DUK_DDDPRINT("duk_hobject_find_existing_entry() using linear scan for lookup"));
-
- h_keys_base = DUK_HOBJECT_E_GET_KEY_BASE(heap, obj);
- n = DUK_HOBJECT_GET_ENEXT(obj);
- for (i = 0; i < n; i++) {
- if (h_keys_base[i] == key) {
- *e_idx = i;
- *h_idx = -1;
- return;
- }
- }
- }
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- else
- {
- /* hash lookup */
- duk_uint32_t n;
- duk_uint32_t i, step;
- duk_uint32_t *h_base;
-
- DUK_DDD(DUK_DDDPRINT("duk_hobject_find_existing_entry() using hash part for lookup"));
-
- h_base = DUK_HOBJECT_H_GET_BASE(heap, obj);
- n = DUK_HOBJECT_GET_HSIZE(obj);
- i = DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), n);
- step = DUK__HASH_PROBE_STEP(DUK_HSTRING_GET_HASH(key));
-
- for (;;) {
- duk_uint32_t t;
-
- DUK_ASSERT_DISABLE(i >= 0); /* unsigned */
- DUK_ASSERT(i < DUK_HOBJECT_GET_HSIZE(obj));
- t = h_base[i];
- DUK_ASSERT(t == DUK__HASH_UNUSED || t == DUK__HASH_DELETED ||
- (t < DUK_HOBJECT_GET_ESIZE(obj))); /* t >= 0 always true, unsigned */
-
- if (t == DUK__HASH_UNUSED) {
- break;
- } else if (t == DUK__HASH_DELETED) {
- DUK_DDD(DUK_DDDPRINT("lookup miss (deleted) i=%ld, t=%ld",
- (long) i, (long) t));
- } else {
- DUK_ASSERT(t < DUK_HOBJECT_GET_ESIZE(obj));
- if (DUK_HOBJECT_E_GET_KEY(heap, obj, t) == key) {
- DUK_DDD(DUK_DDDPRINT("lookup hit i=%ld, t=%ld -> key %p",
- (long) i, (long) t, (void *) key));
- *e_idx = t;
- *h_idx = i;
- return;
- }
- DUK_DDD(DUK_DDDPRINT("lookup miss i=%ld, t=%ld",
- (long) i, (long) t));
- }
- i = (i + step) % n;
-
- /* guaranteed to finish, as hash is never full */
- DUK_ASSERT(i != (duk_uint32_t) DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), n));
- }
- }
-#endif /* DUK_USE_HOBJECT_HASH_PART */
-
- /* not found */
- *e_idx = -1;
- *h_idx = -1;
-}
-
-/* For internal use: get non-accessor entry value */
-DUK_INTERNAL duk_tval *duk_hobject_find_existing_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_hstring *key) {
- duk_int_t e_idx;
- duk_int_t h_idx;
-
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_UNREF(heap);
-
- duk_hobject_find_existing_entry(heap, obj, key, &e_idx, &h_idx);
- if (e_idx >= 0 && !DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, obj, e_idx)) {
- return DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx);
- } else {
- return NULL;
- }
-}
-
-/* For internal use: get non-accessor entry value and attributes */
-DUK_INTERNAL duk_tval *duk_hobject_find_existing_entry_tval_ptr_and_attrs(duk_heap *heap, duk_hobject *obj, duk_hstring *key, duk_int_t *out_attrs) {
- duk_int_t e_idx;
- duk_int_t h_idx;
-
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(out_attrs != NULL);
- DUK_UNREF(heap);
-
- duk_hobject_find_existing_entry(heap, obj, key, &e_idx, &h_idx);
- if (e_idx >= 0 && !DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, obj, e_idx)) {
- *out_attrs = DUK_HOBJECT_E_GET_FLAGS(heap, obj, e_idx);
- return DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx);
- } else {
- *out_attrs = 0;
- return NULL;
- }
-}
-
-/* For internal use: get array part value */
-DUK_INTERNAL duk_tval *duk_hobject_find_existing_array_entry_tval_ptr(duk_heap *heap, duk_hobject *obj, duk_uarridx_t i) {
- duk_tval *tv;
-
- DUK_ASSERT(obj != NULL);
- DUK_UNREF(heap);
-
- if (!DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- return NULL;
- }
- if (i >= DUK_HOBJECT_GET_ASIZE(obj)) {
- return NULL;
- }
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(heap, obj, i);
- return tv;
-}
-
-/*
- * Allocate and initialize a new entry, resizing the properties allocation
- * if necessary. Returns entry index (e_idx) or throws an error if alloc fails.
- *
- * Sets the key of the entry (increasing the key's refcount), and updates
- * the hash part if it exists. Caller must set value and flags, and update
- * the entry value refcount. A decref for the previous value is not necessary.
- */
-
-DUK_LOCAL duk_bool_t duk__alloc_entry_checked(duk_hthread *thr, duk_hobject *obj, duk_hstring *key) {
- duk_uint32_t idx;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(obj) <= DUK_HOBJECT_GET_ESIZE(obj));
-
-#ifdef DUK_USE_ASSERTIONS
- /* key must not already exist in entry part */
- {
- duk_uint_fast32_t i;
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- DUK_ASSERT(DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i) != key);
- }
- }
-#endif
-
- if (DUK_HOBJECT_GET_ENEXT(obj) >= DUK_HOBJECT_GET_ESIZE(obj)) {
- /* only need to guarantee 1 more slot, but allocation growth is in chunks */
- DUK_DDD(DUK_DDDPRINT("entry part full, allocate space for one more entry"));
- duk__grow_props_for_new_entry_item(thr, obj);
- }
- DUK_ASSERT(DUK_HOBJECT_GET_ENEXT(obj) < DUK_HOBJECT_GET_ESIZE(obj));
- idx = DUK_HOBJECT_POSTINC_ENEXT(obj);
-
- /* previous value is assumed to be garbage, so don't touch it */
- DUK_HOBJECT_E_SET_KEY(thr->heap, obj, idx, key);
- DUK_HSTRING_INCREF(thr, key);
-
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- if (DUK_UNLIKELY(DUK_HOBJECT_GET_HSIZE(obj) > 0)) {
- duk_uint32_t n;
- duk_uint32_t i, step;
- duk_uint32_t *h_base = DUK_HOBJECT_H_GET_BASE(thr->heap, obj);
-
- n = DUK_HOBJECT_GET_HSIZE(obj);
- i = DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), n);
- step = DUK__HASH_PROBE_STEP(DUK_HSTRING_GET_HASH(key));
-
- for (;;) {
- duk_uint32_t t = h_base[i];
- if (t == DUK__HASH_UNUSED || t == DUK__HASH_DELETED) {
- DUK_DDD(DUK_DDDPRINT("duk__alloc_entry_checked() inserted key into hash part, %ld -> %ld",
- (long) i, (long) idx));
- DUK_ASSERT_DISABLE(i >= 0); /* unsigned */
- DUK_ASSERT(i < DUK_HOBJECT_GET_HSIZE(obj));
- DUK_ASSERT_DISABLE(idx >= 0);
- DUK_ASSERT(idx < DUK_HOBJECT_GET_ESIZE(obj));
- h_base[i] = idx;
- break;
- }
- DUK_DDD(DUK_DDDPRINT("duk__alloc_entry_checked() miss %ld", (long) i));
- i = (i + step) % n;
-
- /* guaranteed to find an empty slot */
- DUK_ASSERT(i != (duk_uint32_t) DUK__HASH_INITIAL(DUK_HSTRING_GET_HASH(key), DUK_HOBJECT_GET_HSIZE(obj)));
- }
- }
-#endif /* DUK_USE_HOBJECT_HASH_PART */
-
- /* Note: we could return the hash index here too, but it's not
- * needed right now.
- */
-
- DUK_ASSERT_DISABLE(idx >= 0);
- DUK_ASSERT(idx < DUK_HOBJECT_GET_ESIZE(obj));
- DUK_ASSERT(idx < DUK_HOBJECT_GET_ENEXT(obj));
- return idx;
-}
-
-/*
- * Object internal value
- *
- * Returned value is guaranteed to be reachable / incref'd, caller does not need
- * to incref OR decref. No proxies or accessors are invoked, no prototype walk.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_get_internal_value(duk_heap *heap, duk_hobject *obj, duk_tval *tv_out) {
- duk_int_t e_idx;
- duk_int_t h_idx;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(tv_out != NULL);
-
- /* always in entry part, no need to look up parents etc */
- duk_hobject_find_existing_entry(heap, obj, DUK_HEAP_STRING_INT_VALUE(heap), &e_idx, &h_idx);
- if (e_idx >= 0) {
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(heap, obj, e_idx));
- DUK_TVAL_SET_TVAL(tv_out, DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(heap, obj, e_idx));
- return 1;
- }
- DUK_TVAL_SET_UNDEFINED(tv_out);
- return 0;
-}
-
-DUK_INTERNAL duk_hstring *duk_hobject_get_internal_value_string(duk_heap *heap, duk_hobject *obj) {
- duk_tval tv;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(obj != NULL);
-
- /* This is not strictly necessary, but avoids compiler warnings; e.g.
- * gcc won't reliably detect that no uninitialized data is read below.
- */
- DUK_MEMZERO((void *) &tv, sizeof(duk_tval));
-
- if (duk_hobject_get_internal_value(heap, obj, &tv)) {
- duk_hstring *h;
- DUK_ASSERT(DUK_TVAL_IS_STRING(&tv));
- h = DUK_TVAL_GET_STRING(&tv);
- return h;
- }
-
- return NULL;
-}
-
-/*
- * Arguments handling helpers (argument map mainly).
- *
- * An arguments object has exotic behavior for some numeric indices.
- * Accesses may translate to identifier operations which may have
- * arbitrary side effects (potentially invalidating any duk_tval
- * pointers).
- */
-
-/* Lookup 'key' from arguments internal 'map', perform a variable lookup
- * if mapped, and leave the result on top of stack (and return non-zero).
- * Used in E5 Section 10.6 algorithms [[Get]] and [[GetOwnProperty]].
- */
-DUK_LOCAL
-duk_bool_t duk__lookup_arguments_map(duk_hthread *thr,
- duk_hobject *obj,
- duk_hstring *key,
- duk_propdesc *temp_desc,
- duk_hobject **out_map,
- duk_hobject **out_varenv) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *map;
- duk_hobject *varenv;
- duk_bool_t rc;
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- DUK_DDD(DUK_DDDPRINT("arguments map lookup: thr=%p, obj=%p, key=%p, temp_desc=%p "
- "(obj -> %!O, key -> %!O)",
- (void *) thr, (void *) obj, (void *) key, (void *) temp_desc,
- (duk_heaphdr *) obj, (duk_heaphdr *) key));
-
- if (!duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_MAP(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- DUK_DDD(DUK_DDDPRINT("-> no 'map'"));
- return 0;
- }
-
- map = duk_require_hobject(ctx, -1);
- DUK_ASSERT(map != NULL);
- duk_pop(ctx); /* map is reachable through obj */
-
- if (!duk_hobject_get_own_propdesc(thr, map, key, temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- DUK_DDD(DUK_DDDPRINT("-> 'map' exists, but key not in map"));
- return 0;
- }
-
- /* [... varname] */
- DUK_DDD(DUK_DDDPRINT("-> 'map' exists, and contains key, key is mapped to argument/variable binding %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
- DUK_ASSERT(duk_is_string(ctx, -1)); /* guaranteed when building arguments */
-
- /* get varenv for varname (callee's declarative lexical environment) */
- rc = duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_VARENV(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0); /* arguments MUST have an initialized lexical environment reference */
- varenv = duk_require_hobject(ctx, -1);
- DUK_ASSERT(varenv != NULL);
- duk_pop(ctx); /* varenv remains reachable through 'obj' */
-
- DUK_DDD(DUK_DDDPRINT("arguments varenv is: %!dO", (duk_heaphdr *) varenv));
-
- /* success: leave varname in stack */
- *out_map = map;
- *out_varenv = varenv;
- return 1; /* [... varname] */
-}
-
-/* Lookup 'key' from arguments internal 'map', and leave replacement value
- * on stack top if mapped (and return non-zero).
- * Used in E5 Section 10.6 algorithm for [[GetOwnProperty]] (used by [[Get]]).
- */
-DUK_LOCAL duk_bool_t duk__check_arguments_map_for_get(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *map;
- duk_hobject *varenv;
- duk_hstring *varname;
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- if (!duk__lookup_arguments_map(thr, obj, key, temp_desc, &map, &varenv)) {
- DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic get behavior"));
- return 0;
- }
-
- /* [... varname] */
-
- varname = duk_require_hstring(ctx, -1);
- DUK_ASSERT(varname != NULL);
- duk_pop(ctx); /* varname is still reachable */
-
- DUK_DDD(DUK_DDDPRINT("arguments object automatic getvar for a bound variable; "
- "key=%!O, varname=%!O",
- (duk_heaphdr *) key,
- (duk_heaphdr *) varname));
-
- (void) duk_js_getvar_envrec(thr, varenv, varname, 1 /*throw*/);
-
- /* [... value this_binding] */
-
- duk_pop(ctx);
-
- /* leave result on stack top */
- return 1;
-}
-
-/* Lookup 'key' from arguments internal 'map', perform a variable write if mapped.
- * Used in E5 Section 10.6 algorithm for [[DefineOwnProperty]] (used by [[Put]]).
- * Assumes stack top contains 'put' value (which is NOT popped).
- */
-DUK_LOCAL void duk__check_arguments_map_for_put(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc, duk_bool_t throw_flag) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *map;
- duk_hobject *varenv;
- duk_hstring *varname;
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- if (!duk__lookup_arguments_map(thr, obj, key, temp_desc, &map, &varenv)) {
- DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic put behavior"));
- return;
- }
-
- /* [... put_value varname] */
-
- varname = duk_require_hstring(ctx, -1);
- DUK_ASSERT(varname != NULL);
- duk_pop(ctx); /* varname is still reachable */
-
- DUK_DDD(DUK_DDDPRINT("arguments object automatic putvar for a bound variable; "
- "key=%!O, varname=%!O, value=%!T",
- (duk_heaphdr *) key,
- (duk_heaphdr *) varname,
- (duk_tval *) duk_require_tval(ctx, -1)));
-
- /* [... put_value] */
-
- /*
- * Note: although arguments object variable mappings are only established
- * for non-strict functions (and a call to a non-strict function created
- * the arguments object in question), an inner strict function may be doing
- * the actual property write. Hence the throw_flag applied here comes from
- * the property write call.
- */
-
- duk_js_putvar_envrec(thr, varenv, varname, duk_require_tval(ctx, -1), throw_flag);
-
- /* [... put_value] */
-}
-
-/* Lookup 'key' from arguments internal 'map', delete mapping if found.
- * Used in E5 Section 10.6 algorithm for [[Delete]]. Note that the
- * variable/argument itself (where the map points) is not deleted.
- */
-DUK_LOCAL void duk__check_arguments_map_for_delete(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *temp_desc) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *map;
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- if (!duk_hobject_get_own_propdesc(thr, obj, DUK_HTHREAD_STRING_INT_MAP(thr), temp_desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- DUK_DDD(DUK_DDDPRINT("arguments: key not mapped, no exotic delete behavior"));
- return;
- }
-
- map = duk_require_hobject(ctx, -1);
- DUK_ASSERT(map != NULL);
- duk_pop(ctx); /* map is reachable through obj */
-
- DUK_DDD(DUK_DDDPRINT("-> have 'map', delete key %!O from map (if exists)); ignore result",
- (duk_heaphdr *) key));
-
- /* Note: no recursion issue, we can trust 'map' to behave */
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_BEHAVIOR(map));
- DUK_DDD(DUK_DDDPRINT("map before deletion: %!O", (duk_heaphdr *) map));
- (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */
- DUK_DDD(DUK_DDDPRINT("map after deletion: %!O", (duk_heaphdr *) map));
-}
-
-/*
- * Ecmascript compliant [[GetOwnProperty]](P), for internal use only.
- *
- * If property is found:
- * - Fills descriptor fields to 'out_desc'
- * - If DUK_GETDESC_FLAG_PUSH_VALUE is set, pushes a value related to the
- * property onto the stack ('undefined' for accessor properties).
- * - Returns non-zero
- *
- * If property is not found:
- * - 'out_desc' is left in untouched state (possibly garbage)
- * - Nothing is pushed onto the stack (not even with DUK_GETDESC_FLAG_PUSH_VALUE
- * set)
- * - Returns zero
- *
- * Notes:
- *
- * - Getting a property descriptor may cause an allocation (and hence
- * GC) to take place, hence reachability and refcount of all related
- * values matter. Reallocation of value stack, properties, etc may
- * invalidate many duk_tval pointers (concretely, those which reside
- * in memory areas subject to reallocation). However, heap object
- * pointers are never affected (heap objects have stable pointers).
- *
- * - The value of a plain property is always reachable and has a non-zero
- * reference count.
- *
- * - The value of a virtual property is not necessarily reachable from
- * elsewhere and may have a refcount of zero. Hence we push it onto
- * the valstack for the caller, which ensures it remains reachable
- * while it is needed.
- *
- * - There are no virtual accessor properties. Hence, all getters and
- * setters are always related to concretely stored properties, which
- * ensures that the get/set functions in the resulting descriptor are
- * reachable and have non-zero refcounts. Should there be virtual
- * accessor properties later, this would need to change.
- */
-
-DUK_LOCAL duk_bool_t duk__get_own_propdesc_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_uint32_t arr_idx, duk_propdesc *out_desc, duk_small_uint_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv;
-
- DUK_DDD(DUK_DDDPRINT("duk_hobject_get_own_propdesc: thr=%p, obj=%p, key=%p, out_desc=%p, flags=%lx, "
- "arr_idx=%ld (obj -> %!O, key -> %!O)",
- (void *) thr, (void *) obj, (void *) key, (void *) out_desc,
- (long) flags, (long) arr_idx,
- (duk_heaphdr *) obj, (duk_heaphdr *) key));
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(out_desc != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /* XXX: optimize this filling behavior later */
- out_desc->flags = 0;
- out_desc->get = NULL;
- out_desc->set = NULL;
- out_desc->e_idx = -1;
- out_desc->h_idx = -1;
- out_desc->a_idx = -1;
-
- /*
- * Array part
- */
-
- if (DUK_HOBJECT_HAS_ARRAY_PART(obj) && arr_idx != DUK__NO_ARRAY_INDEX) {
- if (arr_idx < DUK_HOBJECT_GET_ASIZE(obj)) {
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx);
- if (!DUK_TVAL_IS_UNUSED(tv)) {
- DUK_DDD(DUK_DDDPRINT("-> found in array part"));
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_tval(ctx, tv);
- }
- /* implicit attributes */
- out_desc->flags = DUK_PROPDESC_FLAG_WRITABLE |
- DUK_PROPDESC_FLAG_CONFIGURABLE |
- DUK_PROPDESC_FLAG_ENUMERABLE;
- out_desc->a_idx = arr_idx;
- goto prop_found;
- }
- }
- /* assume array part is comprehensive (contains all array indexed elements
- * or none of them); hence no need to check the entries part here.
- */
- DUK_DDD(DUK_DDDPRINT("-> not found as a concrete property (has array part, "
- "should be there if present)"));
- goto prop_not_found_concrete;
- }
-
- /*
- * Entries part
- */
-
- duk_hobject_find_existing_entry(thr->heap, obj, key, &out_desc->e_idx, &out_desc->h_idx);
- if (out_desc->e_idx >= 0) {
- duk_int_t e_idx = out_desc->e_idx;
- out_desc->flags = DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, e_idx);
- if (out_desc->flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- DUK_DDD(DUK_DDDPRINT("-> found accessor property in entry part"));
- out_desc->get = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, e_idx);
- out_desc->set = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, e_idx);
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- /* a dummy undefined value is pushed to make valstack
- * behavior uniform for caller
- */
- duk_push_undefined(ctx);
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("-> found plain property in entry part"));
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx);
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_tval(ctx, tv);
- }
- }
- goto prop_found;
- }
-
- /*
- * Not found as a concrete property, check whether a String object
- * virtual property matches.
- */
-
- prop_not_found_concrete:
-
- if (DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(obj)) {
- DUK_DDD(DUK_DDDPRINT("string object exotic property get for key: %!O, arr_idx: %ld",
- (duk_heaphdr *) key, (long) arr_idx));
-
- if (arr_idx != DUK__NO_ARRAY_INDEX) {
- duk_hstring *h_val;
-
- DUK_DDD(DUK_DDDPRINT("array index exists"));
-
- h_val = duk_hobject_get_internal_value_string(thr->heap, obj);
- DUK_ASSERT(h_val);
- if (arr_idx < DUK_HSTRING_GET_CHARLEN(h_val)) {
- DUK_DDD(DUK_DDDPRINT("-> found, array index inside string"));
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_hstring(ctx, h_val);
- duk_substring(ctx, -1, arr_idx, arr_idx + 1); /* [str] -> [substr] */
- }
- out_desc->flags = DUK_PROPDESC_FLAG_ENUMERABLE | /* E5 Section 15.5.5.2 */
- DUK_PROPDESC_FLAG_VIRTUAL;
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj));
- return 1; /* cannot be e.g. arguments exotic, since exotic 'traits' are mutually exclusive */
- } else {
- /* index is above internal string length -> property is fully normal */
- DUK_DDD(DUK_DDDPRINT("array index outside string -> normal property"));
- }
- } else if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- duk_hstring *h_val;
-
- DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior"));
-
- h_val = duk_hobject_get_internal_value_string(thr->heap, obj);
- DUK_ASSERT(h_val != NULL);
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_uint(ctx, (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h_val));
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL; /* E5 Section 15.5.5.1 */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj));
- return 1; /* cannot be arguments exotic */
- }
- } else if (DUK_HOBJECT_IS_BUFFEROBJECT(obj)) {
- duk_hbufferobject *h_bufobj;
- duk_uint_t byte_off;
- duk_small_uint_t elem_size;
-
- h_bufobj = (duk_hbufferobject *) obj;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
- DUK_DDD(DUK_DDDPRINT("bufferobject property get for key: %!O, arr_idx: %ld",
- (duk_heaphdr *) key, (long) arr_idx));
-
- if (arr_idx != DUK__NO_ARRAY_INDEX) {
- DUK_DDD(DUK_DDDPRINT("array index exists"));
-
- /* Careful with wrapping: arr_idx upshift may easily wrap, whereas
- * length downshift won't.
- */
- if (arr_idx < (h_bufobj->length >> h_bufobj->shift)) {
- byte_off = arr_idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */
- elem_size = 1 << h_bufobj->shift;
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_uint8_t *data;
-
- if (h_bufobj->buf != NULL && DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) {
- data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off;
- duk_hbufferobject_push_validated_read(ctx, h_bufobj, data, elem_size);
- } else {
- DUK_D(DUK_DPRINT("bufferobject access out of underlying buffer, ignoring (read zero)"));
- duk_push_uint(ctx, 0);
- }
- }
- out_desc->flags = DUK_PROPDESC_FLAG_WRITABLE |
- DUK_PROPDESC_FLAG_ENUMERABLE |
- DUK_PROPDESC_FLAG_VIRTUAL;
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj));
- return 1; /* cannot be e.g. arguments exotic, since exotic 'traits' are mutually exclusive */
- } else {
- /* index is above internal buffer length -> property is fully normal */
- DUK_DDD(DUK_DDDPRINT("array index outside buffer -> normal property"));
- }
- } else if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior"));
-
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- /* Length in elements: take into account shift, but
- * intentionally don't check the underlying buffer here.
- */
- duk_push_uint(ctx, h_bufobj->length >> h_bufobj->shift);
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL;
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj));
- return 1; /* cannot be arguments exotic */
- } else if (key == DUK_HTHREAD_STRING_BYTE_LENGTH(thr)) {
- /* If neutered must return 0; length is zeroed during
- * neutering.
- */
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_uint(ctx, h_bufobj->length);
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL;
- return 1; /* cannot be arguments exotic */
- } else if (key == DUK_HTHREAD_STRING_BYTE_OFFSET(thr)) {
- /* If neutered must return 0; offset is zeroed during
- * neutering.
- */
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_uint(ctx, h_bufobj->offset);
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL;
- return 1; /* cannot be arguments exotic */
- } else if (key == DUK_HTHREAD_STRING_BYTES_PER_ELEMENT(thr)) {
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_push_uint(ctx, 1 << h_bufobj->shift);
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL;
- return 1; /* cannot be arguments exotic */
- }
- } else if (DUK_HOBJECT_HAS_EXOTIC_DUKFUNC(obj)) {
- DUK_DDD(DUK_DDDPRINT("duktape/c object exotic property get for key: %!O, arr_idx: %ld",
- (duk_heaphdr *) key, (long) arr_idx));
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- DUK_DDD(DUK_DDDPRINT("-> found, key is 'length', length exotic behavior"));
-
- if (flags & DUK_GETDESC_FLAG_PUSH_VALUE) {
- duk_int16_t func_nargs = ((duk_hnativefunction *) obj)->nargs;
- duk_push_int(ctx, func_nargs == DUK_HNATIVEFUNCTION_NARGS_VARARGS ? 0 : func_nargs);
- }
- out_desc->flags = DUK_PROPDESC_FLAG_VIRTUAL; /* not enumerable */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj));
- return 1; /* cannot be arguments exotic */
- }
- }
-
- /* Array properties have exotic behavior but they are concrete,
- * so no special handling here.
- *
- * Arguments exotic behavior (E5 Section 10.6, [[GetOwnProperty]]
- * is only relevant as a post-check implemented below; hence no
- * check here.
- */
-
- /*
- * Not found as concrete or virtual
- */
-
- DUK_DDD(DUK_DDDPRINT("-> not found (virtual, entry part, or array part)"));
- return 0;
-
- /*
- * Found
- *
- * Arguments object has exotic post-processing, see E5 Section 10.6,
- * description of [[GetOwnProperty]] variant for arguments.
- */
-
- prop_found:
- DUK_DDD(DUK_DDDPRINT("-> property found, checking for arguments exotic post-behavior"));
-
- /* Notes:
- * - only numbered indices are relevant, so arr_idx fast reject is good
- * (this is valid unless there are more than 4**32-1 arguments).
- * - since variable lookup has no side effects, this can be skipped if
- * DUK_GETDESC_FLAG_PUSH_VALUE is not set.
- */
-
- if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj) &&
- arr_idx != DUK__NO_ARRAY_INDEX &&
- (flags & DUK_GETDESC_FLAG_PUSH_VALUE)) {
- duk_propdesc temp_desc;
-
- /* Magically bound variable cannot be an accessor. However,
- * there may be an accessor property (or a plain property) in
- * place with magic behavior removed. This happens e.g. when
- * a magic property is redefined with defineProperty().
- * Cannot assert for "not accessor" here.
- */
-
- /* replaces top of stack with new value if necessary */
- DUK_ASSERT((flags & DUK_GETDESC_FLAG_PUSH_VALUE) != 0);
-
- if (duk__check_arguments_map_for_get(thr, obj, key, &temp_desc)) {
- DUK_DDD(DUK_DDDPRINT("-> arguments exotic behavior overrides result: %!T -> %!T",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- /* [... old_result result] -> [... result] */
- duk_remove(ctx, -2);
- }
- }
-
- return 1;
-}
-
-DUK_INTERNAL duk_bool_t duk_hobject_get_own_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(out_desc != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- return duk__get_own_propdesc_raw(thr, obj, key, DUK_HSTRING_GET_ARRIDX_SLOW(key), out_desc, flags);
-}
-
-/*
- * Ecmascript compliant [[GetProperty]](P), for internal use only.
- *
- * If property is found:
- * - Fills descriptor fields to 'out_desc'
- * - If DUK_GETDESC_FLAG_PUSH_VALUE is set, pushes a value related to the
- * property onto the stack ('undefined' for accessor properties).
- * - Returns non-zero
- *
- * If property is not found:
- * - 'out_desc' is left in untouched state (possibly garbage)
- * - Nothing is pushed onto the stack (not even with DUK_GETDESC_FLAG_PUSH_VALUE
- * set)
- * - Returns zero
- *
- * May cause arbitrary side effects and invalidate (most) duk_tval
- * pointers.
- */
-
-DUK_LOCAL duk_bool_t duk__get_propdesc(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_propdesc *out_desc, duk_small_uint_t flags) {
- duk_hobject *curr;
- duk_uint32_t arr_idx;
- duk_uint_t sanity;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(out_desc != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key);
-
- DUK_DDD(DUK_DDDPRINT("duk__get_propdesc: thr=%p, obj=%p, key=%p, out_desc=%p, flags=%lx, "
- "arr_idx=%ld (obj -> %!O, key -> %!O)",
- (void *) thr, (void *) obj, (void *) key, (void *) out_desc,
- (long) flags, (long) arr_idx,
- (duk_heaphdr *) obj, (duk_heaphdr *) key));
-
- curr = obj;
- DUK_ASSERT(curr != NULL);
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- if (duk__get_own_propdesc_raw(thr, curr, key, arr_idx, out_desc, flags)) {
- /* stack contains value (if requested), 'out_desc' is set */
- return 1;
- }
-
- /* not found in 'curr', next in prototype chain; impose max depth */
- if (sanity-- == 0) {
- if (flags & DUK_GETDESC_FLAG_IGNORE_PROTOLOOP) {
- /* treat like property not found */
- break;
- } else {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- }
- curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr);
- } while (curr);
-
- /* out_desc is left untouched (possibly garbage), caller must use return
- * value to determine whether out_desc can be looked up
- */
-
- return 0;
-}
-
-/*
- * Shallow fast path checks for accessing array elements with numeric
- * indices. The goal is to try to avoid coercing an array index to an
- * (interned) string for the most common lookups, in particular, for
- * standard Array objects.
- *
- * Interning is avoided but only for a very narrow set of cases:
- * - Object has array part, index is within array allocation, and
- * value is not unused (= key exists)
- * - Object has no interfering exotic behavior (e.g. arguments or
- * string object exotic behaviors interfere, array exotic
- * behavior does not).
- *
- * Current shortcoming: if key does not exist (even if it is within
- * the array allocation range) a slow path lookup with interning is
- * always required. This can probably be fixed so that there is a
- * quick fast path for non-existent elements as well, at least for
- * standard Array objects.
- */
-
-DUK_LOCAL duk_tval *duk__getprop_shallow_fastpath_array_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key) {
- duk_tval *tv;
- duk_uint32_t idx;
-
- DUK_UNREF(thr);
-
- if (!(DUK_HOBJECT_HAS_ARRAY_PART(obj) &&
- !DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj) &&
- !DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(obj) &&
- !DUK_HOBJECT_IS_BUFFEROBJECT(obj) &&
- !DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj))) {
- /* Must have array part and no conflicting exotic behaviors.
- * Doesn't need to have array special behavior, e.g. Arguments
- * object has array part.
- */
- return NULL;
- }
-
- /* Arrays never have other exotic behaviors. */
-
- DUK_DDD(DUK_DDDPRINT("fast path attempt (no exotic string/arguments/buffer "
- "behavior, object has array part)"));
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- idx = duk__tval_fastint_to_arr_idx(tv_key);
- } else
-#endif
- if (DUK_TVAL_IS_DOUBLE(tv_key)) {
- idx = duk__tval_number_to_arr_idx(tv_key);
- } else {
- DUK_DDD(DUK_DDDPRINT("key is not a number"));
- return NULL;
- }
-
- /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which
- * is 0xffffffffUL. We don't need to check for that explicitly
- * because 0xffffffffUL will never be inside object 'a_size'.
- */
-
- if (idx >= DUK_HOBJECT_GET_ASIZE(obj)) {
- DUK_DDD(DUK_DDDPRINT("key is not an array index or outside array part"));
- return NULL;
- }
- DUK_ASSERT(idx != 0xffffffffUL);
- DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX);
-
- /* XXX: for array instances we could take a shortcut here and assume
- * Array.prototype doesn't contain an array index property.
- */
-
- DUK_DDD(DUK_DDDPRINT("key is a valid array index and inside array part"));
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx);
- if (!DUK_TVAL_IS_UNUSED(tv)) {
- DUK_DDD(DUK_DDDPRINT("-> fast path successful"));
- return tv;
- }
-
- DUK_DDD(DUK_DDDPRINT("fast path attempt failed, fall back to slow path"));
- return NULL;
-}
-
-DUK_LOCAL duk_bool_t duk__putprop_shallow_fastpath_array_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key, duk_tval *tv_val, duk_propdesc *temp_desc) {
- duk_tval *tv;
- duk_uint32_t idx;
- duk_uint32_t old_len, new_len;
-
- if (!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj) &&
- DUK_HOBJECT_HAS_ARRAY_PART(obj) &&
- DUK_HOBJECT_HAS_EXTENSIBLE(obj))) {
- return 0;
- }
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); /* caller ensures */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- idx = duk__tval_fastint_to_arr_idx(tv_key);
- } else
-#endif
- if (DUK_TVAL_IS_DOUBLE(tv_key)) {
- idx = duk__tval_number_to_arr_idx(tv_key);
- } else {
- DUK_DDD(DUK_DDDPRINT("key is not a number"));
- return 0;
- }
-
- /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which
- * is 0xffffffffUL. We don't need to check for that explicitly
- * because 0xffffffffUL will never be inside object 'a_size'.
- */
-
- if (idx >= DUK_HOBJECT_GET_ASIZE(obj)) { /* for resizing of array part, use slow path */
- return 0;
- }
- DUK_ASSERT(idx != 0xffffffffUL);
- DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX);
-
- old_len = duk__get_old_array_length(thr, obj, temp_desc);
-
- if (idx >= old_len) {
- DUK_DDD(DUK_DDDPRINT("write new array entry requires length update "
- "(arr_idx=%ld, old_len=%ld)",
- (long) idx, (long) old_len));
- if (!(temp_desc->flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_WRITABLE);
- return 0; /* not reachable */
- }
- new_len = idx + 1;
-
- /* No resize has occurred so temp_desc->e_idx is still OK */
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, temp_desc->e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- DUK_TVAL_SET_FASTINT_U32(tv, new_len); /* no need for decref/incref because value is a number */
- } else {
- ;
- }
-
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, idx);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
-
- DUK_DDD(DUK_DDDPRINT("array fast path success for index %ld", (long) idx));
- return 1;
-}
-
-/*
- * Fast path for bufferobject getprop/putprop
- */
-
-DUK_LOCAL duk_bool_t duk__getprop_fastpath_bufobj_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key) {
- duk_context *ctx;
- duk_uint32_t idx;
- duk_hbufferobject *h_bufobj;
- duk_uint_t byte_off;
- duk_small_uint_t elem_size;
- duk_uint8_t *data;
-
- ctx = (duk_context *) thr;
-
- if (!DUK_HOBJECT_IS_BUFFEROBJECT(obj)) {
- return 0;
- }
- h_bufobj = (duk_hbufferobject *) obj;
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- idx = duk__tval_fastint_to_arr_idx(tv_key);
- } else
-#endif
- if (DUK_TVAL_IS_DOUBLE(tv_key)) {
- idx = duk__tval_number_to_arr_idx(tv_key);
- } else {
- return 0;
- }
-
- /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which
- * is 0xffffffffUL. We don't need to check for that explicitly
- * because 0xffffffffUL will never be inside bufferobject length.
- */
-
- /* Careful with wrapping (left shifting idx would be unsafe). */
- if (idx >= (h_bufobj->length >> h_bufobj->shift)) {
- return 0;
- }
- DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX);
-
- byte_off = idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */
- elem_size = 1 << h_bufobj->shift;
-
- if (h_bufobj->buf != NULL && DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) {
- data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off;
- duk_hbufferobject_push_validated_read(ctx, h_bufobj, data, elem_size);
- } else {
- DUK_D(DUK_DPRINT("bufferobject access out of underlying buffer, ignoring (read zero)"));
- duk_push_uint(ctx, 0);
- }
-
- return 1;
-}
-
-DUK_LOCAL duk_bool_t duk__putprop_fastpath_bufobj_tval(duk_hthread *thr, duk_hobject *obj, duk_tval *tv_key, duk_tval *tv_val) {
- duk_context *ctx;
- duk_uint32_t idx;
- duk_hbufferobject *h_bufobj;
- duk_uint_t byte_off;
- duk_small_uint_t elem_size;
- duk_uint8_t *data;
-
- ctx = (duk_context *) thr;
-
- if (!(DUK_HOBJECT_IS_BUFFEROBJECT(obj) &&
- DUK_TVAL_IS_NUMBER(tv_val))) {
- return 0;
- }
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)); /* caller ensures; rom objects are never bufferobjects now */
-
- h_bufobj = (duk_hbufferobject *) obj;
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- idx = duk__tval_fastint_to_arr_idx(tv_key);
- } else
-#endif
- if (DUK_TVAL_IS_DOUBLE(tv_key)) {
- idx = duk__tval_number_to_arr_idx(tv_key);
- } else {
- return 0;
- }
-
- /* If index is not valid, idx will be DUK__NO_ARRAY_INDEX which
- * is 0xffffffffUL. We don't need to check for that explicitly
- * because 0xffffffffUL will never be inside bufferobject length.
- */
-
- /* Careful with wrapping (left shifting idx would be unsafe). */
- if (idx >= (h_bufobj->length >> h_bufobj->shift)) {
- return 0;
- }
- DUK_ASSERT(idx != DUK__NO_ARRAY_INDEX);
-
- byte_off = idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */
- elem_size = 1 << h_bufobj->shift;
-
- /* Value is required to be a number in the fast path so there
- * are no side effects in write coercion.
- */
- duk_push_tval(ctx, tv_val);
- DUK_ASSERT(duk_is_number(ctx, -1));
-
- if (h_bufobj->buf != NULL && DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) {
- data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off;
- duk_hbufferobject_validated_write(ctx, h_bufobj, data, elem_size);
- } else {
- DUK_D(DUK_DPRINT("bufferobject access out of underlying buffer, ignoring (write skipped)"));
- }
-
- duk_pop(ctx);
- return 1;
-}
-
-/*
- * GETPROP: Ecmascript property read.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_getprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval tv_obj_copy;
- duk_tval tv_key_copy;
- duk_hobject *curr = NULL;
- duk_hstring *key = NULL;
- duk_uint32_t arr_idx = DUK__NO_ARRAY_INDEX;
- duk_propdesc desc;
- duk_uint_t sanity;
-
- DUK_DDD(DUK_DDDPRINT("getprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)",
- (void *) thr, (void *) tv_obj, (void *) tv_key,
- (duk_tval *) tv_obj, (duk_tval *) tv_key));
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(tv_obj != NULL);
- DUK_ASSERT(tv_key != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /*
- * Make a copy of tv_obj, tv_key, and tv_val to avoid any issues of
- * them being invalidated by a valstack resize.
- *
- * XXX: this is now an overkill for many fast paths. Rework this
- * to be faster (although switching to a valstack discipline might
- * be a better solution overall).
- */
-
- DUK_TVAL_SET_TVAL(&tv_obj_copy, tv_obj);
- DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key);
- tv_obj = &tv_obj_copy;
- tv_key = &tv_key_copy;
-
- /*
- * Coercion and fast path processing
- */
-
- switch (DUK_TVAL_GET_TAG(tv_obj)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL: {
- /* Note: unconditional throw */
- DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject"));
-#if defined(DUK_USE_PARANOID_ERRORS)
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE);
-#else
- DUK_ERROR_FMT2(thr, DUK_ERR_TYPE_ERROR, "cannot read property %s of %s",
- duk_push_string_tval_readable(ctx, tv_key), duk_push_string_tval_readable(ctx, tv_obj));
-#endif
- return 0;
- }
-
- case DUK_TAG_BOOLEAN: {
- DUK_DDD(DUK_DDDPRINT("base object is a boolean, start lookup from boolean prototype"));
- curr = thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE];
- break;
- }
-
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj);
- duk_int_t pop_count;
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- arr_idx = duk__tval_fastint_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object string, key is a fast-path fastint; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- } else
-#endif
- if (DUK_TVAL_IS_NUMBER(tv_key)) {
- arr_idx = duk__tval_number_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object string, key is a fast-path number; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- } else {
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object string, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- pop_count = 1;
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HSTRING_GET_CHARLEN(h)) {
- duk_pop_n(ctx, pop_count);
- duk_push_hstring(ctx, h);
- duk_substring(ctx, -1, arr_idx, arr_idx + 1); /* [str] -> [substr] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is string, key is an index inside string length "
- "after coercion -> return char)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
-
- if (pop_count == 0) {
- /* This is a pretty awkward control flow, but we need to recheck the
- * key coercion here.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object string, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- }
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- duk_pop(ctx); /* [key] -> [] */
- duk_push_uint(ctx, (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h)); /* [] -> [res] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is string, key is 'length' after coercion -> "
- "return string length)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
- DUK_DDD(DUK_DDDPRINT("base object is a string, start lookup from string prototype"));
- curr = thr->builtins[DUK_BIDX_STRING_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
- case DUK_TAG_OBJECT: {
- duk_tval *tmp;
-
- curr = DUK_TVAL_GET_OBJECT(tv_obj);
- DUK_ASSERT(curr != NULL);
-
- tmp = duk__getprop_shallow_fastpath_array_tval(thr, curr, tv_key);
- if (tmp) {
- duk_push_tval(ctx, tmp);
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is object, key is a number, array part "
- "fast path)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
-
- if (duk__getprop_fastpath_bufobj_tval(thr, curr, tv_key) != 0) {
- /* Read value pushed on stack. */
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is bufobj, key is a number, bufferobject "
- "fast path)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(curr))) {
- duk_hobject *h_target;
-
- if (duk__proxy_check_prop(thr, curr, DUK_STRIDX_GET, tv_key, &h_target)) {
- /* -> [ ... trap handler ] */
- DUK_DDD(DUK_DDDPRINT("-> proxy object 'get' for key %!T", (duk_tval *) tv_key));
- duk_push_hobject(ctx, h_target); /* target */
- duk_push_tval(ctx, tv_key); /* P */
- duk_push_tval(ctx, tv_obj); /* Receiver: Proxy object */
- duk_call_method(ctx, 3 /*nargs*/);
-
- /* Target object must be checked for a conflicting
- * non-configurable property.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- duk_tval *tv_hook = duk_require_tval(ctx, -3); /* value from hook */
- duk_tval *tv_targ = duk_require_tval(ctx, -1); /* value from target */
- duk_bool_t datadesc_reject;
- duk_bool_t accdesc_reject;
-
- DUK_DDD(DUK_DDDPRINT("proxy 'get': target has matching property %!O, check for "
- "conflicting property; tv_hook=%!T, tv_targ=%!T, desc.flags=0x%08lx, "
- "desc.get=%p, desc.set=%p",
- (duk_heaphdr *) key, (duk_tval *) tv_hook, (duk_tval *) tv_targ,
- (unsigned long) desc.flags,
- (void *) desc.get, (void *) desc.set));
-
- datadesc_reject = !(desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) &&
- !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) &&
- !(desc.flags & DUK_PROPDESC_FLAG_WRITABLE) &&
- !duk_js_samevalue(tv_hook, tv_targ);
- accdesc_reject = (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) &&
- !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) &&
- (desc.get == NULL) &&
- !DUK_TVAL_IS_UNDEFINED(tv_hook);
- if (datadesc_reject || accdesc_reject) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
-
- duk_pop_2(ctx);
- } else {
- duk_pop(ctx);
- }
- return 1; /* return value */
- }
-
- curr = h_target; /* resume lookup from target */
- DUK_TVAL_SET_OBJECT(tv_obj, curr);
- }
-#endif /* DUK_USE_ES6_PROXY */
-
- if (DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(curr)) {
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- if (duk__check_arguments_map_for_get(thr, curr, key, &desc)) {
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is object with arguments exotic behavior, "
- "key matches magically bound property -> skip standard "
- "Get with replacement value)",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* no need for 'caller' post-check, because 'key' must be an array index */
-
- duk_remove(ctx, -2); /* [key result] -> [result] */
- return 1;
- }
-
- goto lookup; /* avoid double coercion */
- }
- break;
- }
-
- /* Buffer has virtual properties similar to string, but indexed values
- * are numbers, not 1-byte buffers/strings which would perform badly.
- */
- case DUK_TAG_BUFFER: {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj);
- duk_int_t pop_count;
-
- /*
- * Because buffer values are often looped over, a number fast path
- * is important.
- */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- arr_idx = duk__tval_fastint_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path fastint; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- }
- else
-#endif
- if (DUK_TVAL_IS_NUMBER(tv_key)) {
- arr_idx = duk__tval_number_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path number; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- } else {
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- pop_count = 1;
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HBUFFER_GET_SIZE(h)) {
- duk_pop_n(ctx, pop_count);
- duk_push_uint(ctx, ((duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h))[arr_idx]);
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is an index inside buffer length "
- "after coercion -> return byte as number)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
-
- if (pop_count == 0) {
- /* This is a pretty awkward control flow, but we need to recheck the
- * key coercion here.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- }
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr) ||
- key == DUK_HTHREAD_STRING_BYTE_LENGTH(thr)) {
- duk_pop(ctx); /* [key] -> [] */
- duk_push_uint(ctx, (duk_uint_t) DUK_HBUFFER_GET_SIZE(h)); /* [] -> [res] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is 'length' or 'byteLength' "
- "after coercion -> return buffer length)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- } else if (key == DUK_HTHREAD_STRING_BYTE_OFFSET(thr)) {
- duk_pop(ctx); /* [key] -> [] */
- duk_push_uint(ctx, 0); /* [] -> [res] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is 'byteOffset' after coercion -> "
- "return 0 for consistency with Buffer objects)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- } else if (key == DUK_HTHREAD_STRING_BYTES_PER_ELEMENT(thr)) {
- duk_pop(ctx); /* [key] -> [] */
- duk_push_uint(ctx, 1); /* [] -> [res] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (base is buffer, key is 'BYTES_PER_ELEMENT' after coercion -> "
- "return 1 for consistency with Buffer objects)",
- (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
- }
-
- DUK_DDD(DUK_DDDPRINT("base object is a buffer, start lookup from buffer prototype"));
- curr = thr->builtins[DUK_BIDX_BUFFER_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
- case DUK_TAG_POINTER: {
- DUK_DDD(DUK_DDDPRINT("base object is a pointer, start lookup from pointer prototype"));
- curr = thr->builtins[DUK_BIDX_POINTER_PROTOTYPE];
- break;
- }
-
- case DUK_TAG_LIGHTFUNC: {
- duk_int_t lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv_obj);
-
- /* Must coerce key: if key is an object, it may coerce to e.g. 'length'. */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- duk_int_t lf_len = DUK_LFUNC_FLAGS_GET_LENGTH(lf_flags);
- duk_pop(ctx);
- duk_push_int(ctx, lf_len);
- return 1;
- } else if (key == DUK_HTHREAD_STRING_NAME(thr)) {
- duk_pop(ctx);
- duk_push_lightfunc_name(ctx, tv_obj);
- return 1;
- }
-
- DUK_DDD(DUK_DDDPRINT("base object is a lightfunc, start lookup from function prototype"));
- curr = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* number */
- DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype"));
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_obj));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj));
- curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE];
- break;
- }
- }
-
- /* key coercion (unless already coerced above) */
- DUK_ASSERT(key == NULL);
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- /*
- * Property lookup
- */
-
- lookup:
- /* [key] (coerced) */
- DUK_ASSERT(curr != NULL);
- DUK_ASSERT(key != NULL);
-
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- if (!duk__get_own_propdesc_raw(thr, curr, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- goto next_in_chain;
- }
-
- if (desc.get != NULL) {
- /* accessor with defined getter */
- DUK_ASSERT((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) != 0);
-
- duk_pop(ctx); /* [key undefined] -> [key] */
- duk_push_hobject(ctx, desc.get);
- duk_push_tval(ctx, tv_obj); /* note: original, uncoerced base */
-#ifdef DUK_USE_NONSTD_GETTER_KEY_ARGUMENT
- duk_dup(ctx, -3);
- duk_call_method(ctx, 1); /* [key getter this key] -> [key retval] */
-#else
- duk_call_method(ctx, 0); /* [key getter this] -> [key retval] */
-#endif
- } else {
- /* [key value] or [key undefined] */
-
- /* data property or accessor without getter */
- DUK_ASSERT(((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) == 0) ||
- (desc.get == NULL));
-
- /* if accessor without getter, return value is undefined */
- DUK_ASSERT(((desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) == 0) ||
- duk_is_undefined(ctx, -1));
-
- /* Note: for an accessor without getter, falling through to
- * check for "caller" exotic behavior is unnecessary as
- * "undefined" will never activate the behavior. But it does
- * no harm, so we'll do it anyway.
- */
- }
-
- goto found; /* [key result] */
-
- next_in_chain:
- /* XXX: option to pretend property doesn't exist if sanity limit is
- * hit might be useful.
- */
- if (sanity-- == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr);
- } while (curr);
-
- /*
- * Not found
- */
-
- duk_to_undefined(ctx, -1); /* [key] -> [undefined] (default value) */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (not found)", (duk_tval *) duk_get_tval(ctx, -1)));
- return 0;
-
- /*
- * Found; post-processing (Function and arguments objects)
- */
-
- found:
- /* [key result] */
-
-#if !defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- /* Special behavior for 'caller' property of (non-bound) function objects
- * and non-strict Arguments objects: if 'caller' -value- (!) is a strict
- * mode function, throw a TypeError (E5 Sections 15.3.5.4, 10.6).
- * Quite interestingly, a non-strict function with no formal arguments
- * will get an arguments object -without- special 'caller' behavior!
- *
- * The E5.1 spec is a bit ambiguous if this special behavior applies when
- * a bound function is the base value (not the 'caller' value): Section
- * 15.3.4.5 (describing bind()) states that [[Get]] for bound functions
- * matches that of Section 15.3.5.4 ([[Get]] for Function instances).
- * However, Section 13.3.5.4 has "NOTE: Function objects created using
- * Function.prototype.bind use the default [[Get]] internal method."
- * The current implementation assumes this means that bound functions
- * should not have the special [[Get]] behavior.
- *
- * The E5.1 spec is also a bit unclear if the TypeError throwing is
- * applied if the 'caller' value is a strict bound function. The
- * current implementation will throw even for both strict non-bound
- * and strict bound functions.
- *
- * See test-dev-strict-func-as-caller-prop-value.js for quite extensive
- * tests.
- *
- * This exotic behavior is disabled when the non-standard 'caller' property
- * is enabled, as it conflicts with the free use of 'caller'.
- */
- if (key == DUK_HTHREAD_STRING_CALLER(thr) &&
- DUK_TVAL_IS_OBJECT(tv_obj)) {
- duk_hobject *orig = DUK_TVAL_GET_OBJECT(tv_obj);
- DUK_ASSERT(orig != NULL);
-
- if (DUK_HOBJECT_IS_NONBOUND_FUNCTION(orig) ||
- DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(orig)) {
- duk_hobject *h;
-
- /* XXX: The TypeError is currently not applied to bound
- * functions because the 'strict' flag is not copied by
- * bind(). This may or may not be correct, the specification
- * only refers to the value being a "strict mode Function
- * object" which is ambiguous.
- */
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(orig));
-
- h = duk_get_hobject(ctx, -1); /* NULL if not an object */
- if (h &&
- DUK_HOBJECT_IS_FUNCTION(h) &&
- DUK_HOBJECT_HAS_STRICT(h)) {
- /* XXX: sufficient to check 'strict', assert for 'is function' */
- DUK_ERROR_TYPE(thr, DUK_STR_STRICT_CALLER_READ);
- }
- }
- }
-#endif /* !DUK_USE_NONSTD_FUNC_CALLER_PROPERTY */
-
- duk_remove(ctx, -2); /* [key result] -> [result] */
-
- DUK_DDD(DUK_DDDPRINT("-> %!T (found)", (duk_tval *) duk_get_tval(ctx, -1)));
- return 1;
-}
-
-/*
- * HASPROP: Ecmascript property existence check ("in" operator).
- *
- * Interestingly, the 'in' operator does not do any coercion of
- * the target object.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_hasprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval tv_key_copy;
- duk_hobject *obj;
- duk_hstring *key;
- duk_uint32_t arr_idx;
- duk_bool_t rc;
- duk_propdesc desc;
-
- DUK_DDD(DUK_DDDPRINT("hasprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)",
- (void *) thr, (void *) tv_obj, (void *) tv_key,
- (duk_tval *) tv_obj, (duk_tval *) tv_key));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(tv_obj != NULL);
- DUK_ASSERT(tv_key != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key);
- tv_key = &tv_key_copy;
-
- /*
- * The 'in' operator requires an object as its right hand side,
- * throwing a TypeError unconditionally if this is not the case.
- *
- * However, lightfuncs need to behave like fully fledged objects
- * here to be maximally transparent, so we need to handle them
- * here.
- */
-
- /* XXX: Refactor key coercion so that it's only called once. It can't
- * be trivially lifted here because the object must be type checked
- * first.
- */
-
- if (DUK_TVAL_IS_OBJECT(tv_obj)) {
- obj = DUK_TVAL_GET_OBJECT(tv_obj);
- DUK_ASSERT(obj != NULL);
-
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv_obj)) {
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- if (duk__key_is_lightfunc_ownprop(thr, key)) {
- /* FOUND */
- rc = 1;
- goto pop_and_return;
- }
-
- /* If not found, resume existence check from Function.prototype.
- * We can just substitute the value in this case; nothing will
- * need the original base value (as would be the case with e.g.
- * setters/getters.
- */
- obj = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE];
- } else {
- /* Note: unconditional throw */
- DUK_DDD(DUK_DDDPRINT("base object is not an object -> reject"));
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE);
- }
-
- /* XXX: fast path for arrays? */
-
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_UNREF(arr_idx);
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj))) {
- duk_hobject *h_target;
- duk_bool_t tmp_bool;
-
- /* XXX: the key in 'key in obj' is string coerced before we're called
- * (which is the required behavior in E5/E5.1/E6) so the key is a string
- * here already.
- */
-
- if (duk__proxy_check_prop(thr, obj, DUK_STRIDX_HAS, tv_key, &h_target)) {
- /* [ ... key trap handler ] */
- DUK_DDD(DUK_DDDPRINT("-> proxy object 'has' for key %!T", (duk_tval *) tv_key));
- duk_push_hobject(ctx, h_target); /* target */
- duk_push_tval(ctx, tv_key); /* P */
- duk_call_method(ctx, 2 /*nargs*/);
- tmp_bool = duk_to_boolean(ctx, -1);
- if (!tmp_bool) {
- /* Target object must be checked for a conflicting
- * non-configurable property.
- */
-
- if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */
- DUK_DDD(DUK_DDDPRINT("proxy 'has': target has matching property %!O, check for "
- "conflicting property; desc.flags=0x%08lx, "
- "desc.get=%p, desc.set=%p",
- (duk_heaphdr *) key, (unsigned long) desc.flags,
- (void *) desc.get, (void *) desc.set));
- /* XXX: Extensibility check for target uses IsExtensible(). If we
- * implemented the isExtensible trap and didn't reject proxies as
- * proxy targets, it should be respected here.
- */
- if (!((desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && /* property is configurable and */
- DUK_HOBJECT_HAS_EXTENSIBLE(h_target))) { /* ... target is extensible */
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
- }
- }
-
- duk_pop_2(ctx); /* [ key trap_result ] -> [] */
- return tmp_bool;
- }
-
- obj = h_target; /* resume check from proxy target */
- }
-#endif /* DUK_USE_ES6_PROXY */
-
- /* XXX: inline into a prototype walking loop? */
-
- rc = duk__get_propdesc(thr, obj, key, &desc, 0 /*flags*/); /* don't push value */
- /* fall through */
-
- pop_and_return:
- duk_pop(ctx); /* [ key ] -> [] */
- return rc;
-}
-
-/*
- * HASPROP variant used internally.
- *
- * This primitive must never throw an error, callers rely on this.
- * In particular, don't throw an error for prototype loops; instead,
- * pretend like the property doesn't exist if a prototype sanity limit
- * is reached.
- *
- * Does not implement proxy behavior: if applied to a proxy object,
- * returns key existence on the proxy object itself.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_hasprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key) {
- duk_propdesc dummy;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- return duk__get_propdesc(thr, obj, key, &dummy, DUK_GETDESC_FLAG_IGNORE_PROTOLOOP); /* don't push value */
-}
-
-/*
- * Helper: handle Array object 'length' write which automatically
- * deletes properties, see E5 Section 15.4.5.1, step 3. This is
- * quite tricky to get right.
- *
- * Used by duk_hobject_putprop().
- */
-
-DUK_LOCAL duk_uint32_t duk__get_old_array_length(duk_hthread *thr, duk_hobject *obj, duk_propdesc *temp_desc) {
- duk_bool_t rc;
- duk_tval *tv;
- duk_uint32_t res;
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /* This function is only called for objects with array exotic behavior.
- * The [[DefineOwnProperty]] algorithm for arrays requires that
- * 'length' can never have a value outside the unsigned 32-bit range,
- * attempt to write such a value is a RangeError. Here we can thus
- * assert for this. When Duktape internals go around the official
- * property write interface (doesn't happen often) this assumption is
- * easy to accidentally break, so such code must be written carefully.
- * See test-bi-array-push-maxlen.js.
- */
-
- rc = duk__get_own_propdesc_raw(thr, obj, DUK_HTHREAD_STRING_LENGTH(thr), DUK__NO_ARRAY_INDEX, temp_desc, 0 /*flags*/); /* don't push value */
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0); /* arrays MUST have a 'length' property */
- DUK_ASSERT(temp_desc->e_idx >= 0);
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, temp_desc->e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); /* array 'length' is always a number, as we coerce it */
- DUK_ASSERT(DUK_TVAL_GET_NUMBER(tv) >= 0.0);
- DUK_ASSERT(DUK_TVAL_GET_NUMBER(tv) <= (double) 0xffffffffUL);
- DUK_ASSERT((duk_double_t) (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv) == DUK_TVAL_GET_NUMBER(tv));
-#if defined(DUK_USE_FASTINT)
- /* Downgrade checks are not made everywhere, so 'length' is not always
- * a fastint (it is a number though). This can be removed once length
- * is always guaranteed to be a fastint.
- */
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv) || DUK_TVAL_IS_DOUBLE(tv));
- if (DUK_TVAL_IS_FASTINT(tv)) {
- res = (duk_uint32_t) DUK_TVAL_GET_FASTINT_U32(tv);
- } else {
- res = (duk_uint32_t) DUK_TVAL_GET_DOUBLE(tv);
- }
-#else
- res = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv);
-#endif /* DUK_USE_FASTINT */
-
- return res;
-}
-
-DUK_LOCAL duk_uint32_t duk__to_new_array_length_checked(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint32_t res;
- duk_double_t d;
-
- /* Input value should be on stack top and will be coerced and
- * popped. Refuse to update an Array's 'length' to a value
- * outside the 32-bit range. Negative zero is accepted as zero.
- */
-
- /* XXX: fastint */
-
- d = duk_to_number(ctx, -1);
- res = (duk_uint32_t) d;
- if ((duk_double_t) res != d) {
- DUK_ERROR_RANGE(thr, DUK_STR_INVALID_ARRAY_LENGTH);
- }
- duk_pop(ctx);
- return res;
-}
-
-/* Delete elements required by a smaller length, taking into account
- * potentially non-configurable elements. Returns non-zero if all
- * elements could be deleted, and zero if all or some elements could
- * not be deleted. Also writes final "target length" to 'out_result_len'.
- * This is the length value that should go into the 'length' property
- * (must be set by the caller). Never throws an error.
- */
-DUK_LOCAL
-duk_bool_t duk__handle_put_array_length_smaller(duk_hthread *thr,
- duk_hobject *obj,
- duk_uint32_t old_len,
- duk_uint32_t new_len,
- duk_bool_t force_flag,
- duk_uint32_t *out_result_len) {
- duk_uint32_t target_len;
- duk_uint_fast32_t i;
- duk_uint32_t arr_idx;
- duk_hstring *key;
- duk_tval *tv;
- duk_bool_t rc;
-
- DUK_DDD(DUK_DDDPRINT("new array length smaller than old (%ld -> %ld), "
- "probably need to remove elements",
- (long) old_len, (long) new_len));
-
- /*
- * New length is smaller than old length, need to delete properties above
- * the new length.
- *
- * If array part exists, this is straightforward: array entries cannot
- * be non-configurable so this is guaranteed to work.
- *
- * If array part does not exist, array-indexed values are scattered
- * in the entry part, and some may not be configurable (preventing length
- * from becoming lower than their index + 1). To handle the algorithm
- * in E5 Section 15.4.5.1, step l correctly, we scan the entire property
- * set twice.
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(new_len < old_len);
- DUK_ASSERT(out_result_len != NULL);
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- /*
- * All defined array-indexed properties are in the array part
- * (we assume the array part is comprehensive), and all array
- * entries are writable, configurable, and enumerable. Thus,
- * nothing can prevent array entries from being deleted.
- */
-
- DUK_DDD(DUK_DDDPRINT("have array part, easy case"));
-
- if (old_len < DUK_HOBJECT_GET_ASIZE(obj)) {
- /* XXX: assertion that entries >= old_len are already unused */
- i = old_len;
- } else {
- i = DUK_HOBJECT_GET_ASIZE(obj);
- }
- DUK_ASSERT(i <= DUK_HOBJECT_GET_ASIZE(obj));
-
- while (i > new_len) {
- i--;
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */
- }
-
- *out_result_len = new_len;
- return 1;
- } else {
- /*
- * Entries part is a bit more complex
- */
-
- /* Stage 1: find highest preventing non-configurable entry (if any).
- * When forcing, ignore non-configurability.
- */
-
- DUK_DDD(DUK_DDDPRINT("no array part, slow case"));
-
- DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 1: find target_len "
- "(highest preventing non-configurable entry (if any))"));
-
- target_len = new_len;
- if (force_flag) {
- DUK_DDD(DUK_DDDPRINT("array length write, no array part; force flag -> skip stage 1"));
- goto skip_stage1;
- }
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i);
- if (!key) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: null key", (long) i));
- continue;
- }
- if (!DUK_HSTRING_HAS_ARRIDX(key)) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key not an array index", (long) i));
- continue;
- }
-
- DUK_ASSERT(DUK_HSTRING_HAS_ARRIDX(key)); /* XXX: macro checks for array index flag, which is unnecessary here */
- arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key);
- DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX);
- DUK_ASSERT(arr_idx < old_len); /* consistency requires this */
-
- if (arr_idx < new_len) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is array index %ld, below new_len",
- (long) i, (long) arr_idx));
- continue;
- }
- if (DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(thr->heap, obj, i)) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is a relevant array index %ld, but configurable",
- (long) i, (long) arr_idx));
- continue;
- }
-
- /* relevant array index is non-configurable, blocks write */
- if (arr_idx >= target_len) {
- DUK_DDD(DUK_DDDPRINT("entry at index %ld has arr_idx %ld, is not configurable, "
- "update target_len %ld -> %ld",
- (long) i, (long) arr_idx, (long) target_len,
- (long) (arr_idx + 1)));
- target_len = arr_idx + 1;
- }
- }
- skip_stage1:
-
- /* stage 2: delete configurable entries above target length */
-
- DUK_DDD(DUK_DDDPRINT("old_len=%ld, new_len=%ld, target_len=%ld",
- (long) old_len, (long) new_len, (long) target_len));
-
- DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 2: remove "
- "entries >= target_len"));
-
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- key = DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i);
- if (!key) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: null key", (long) i));
- continue;
- }
- if (!DUK_HSTRING_HAS_ARRIDX(key)) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key not an array index", (long) i));
- continue;
- }
-
- DUK_ASSERT(DUK_HSTRING_HAS_ARRIDX(key)); /* XXX: macro checks for array index flag, which is unnecessary here */
- arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key);
- DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX);
- DUK_ASSERT(arr_idx < old_len); /* consistency requires this */
-
- if (arr_idx < target_len) {
- DUK_DDD(DUK_DDDPRINT("skip entry index %ld: key is array index %ld, below target_len",
- (long) i, (long) arr_idx));
- continue;
- }
- DUK_ASSERT(force_flag || DUK_HOBJECT_E_SLOT_IS_CONFIGURABLE(thr->heap, obj, i)); /* stage 1 guarantees */
-
- DUK_DDD(DUK_DDDPRINT("delete entry index %ld: key is array index %ld",
- (long) i, (long) arr_idx));
-
- /*
- * Slow delete, but we don't care as we're already in a very slow path.
- * The delete always succeeds: key has no exotic behavior, property
- * is configurable, and no resize occurs.
- */
- rc = duk_hobject_delprop_raw(thr, obj, key, force_flag ? DUK_DELPROP_FLAG_FORCE : 0);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- }
-
- /* stage 3: update length (done by caller), decide return code */
-
- DUK_DDD(DUK_DDDPRINT("array length write, no array part, stage 3: update length (done by caller)"));
-
- *out_result_len = target_len;
-
- if (target_len == new_len) {
- DUK_DDD(DUK_DDDPRINT("target_len matches new_len, return success"));
- return 1;
- }
- DUK_DDD(DUK_DDDPRINT("target_len does not match new_len (some entry prevented "
- "full length adjustment), return error"));
- return 0;
- }
-
- DUK_UNREACHABLE();
-}
-
-/* XXX: is valstack top best place for argument? */
-DUK_LOCAL duk_bool_t duk__handle_put_array_length(duk_hthread *thr, duk_hobject *obj) {
- duk_context *ctx = (duk_context *) thr;
- duk_propdesc desc;
- duk_uint32_t old_len;
- duk_uint32_t new_len;
- duk_uint32_t result_len;
- duk_tval *tv;
- duk_bool_t rc;
-
- DUK_DDD(DUK_DDDPRINT("handling a put operation to array 'length' exotic property, "
- "new val: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(obj != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- DUK_ASSERT(duk_is_valid_index(ctx, -1));
-
- /*
- * Get old and new length
- */
-
- old_len = duk__get_old_array_length(thr, obj, &desc);
- duk_dup(ctx, -1); /* [in_val in_val] */
- new_len = duk__to_new_array_length_checked(thr); /* -> [in_val] */
- DUK_DDD(DUK_DDDPRINT("old_len=%ld, new_len=%ld", (long) old_len, (long) new_len));
-
- /*
- * Writability check
- */
-
- if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- DUK_DDD(DUK_DDDPRINT("length is not writable, fail"));
- return 0;
- }
-
- /*
- * New length not lower than old length => no changes needed
- * (not even array allocation).
- */
-
- if (new_len >= old_len) {
- DUK_DDD(DUK_DDDPRINT("new length is higher than old length, just update length, no deletions"));
-
- DUK_ASSERT(desc.e_idx >= 0);
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx));
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- /* no decref needed for a number */
- DUK_TVAL_SET_FASTINT_U32(tv, new_len);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- return 1;
- }
-
- DUK_DDD(DUK_DDDPRINT("new length is lower than old length, probably must delete entries"));
-
- /*
- * New length lower than old length => delete elements, then
- * update length.
- *
- * Note: even though a bunch of elements have been deleted, the 'desc' is
- * still valid as properties haven't been resized (and entries compacted).
- */
-
- rc = duk__handle_put_array_length_smaller(thr, obj, old_len, new_len, 0 /*force_flag*/, &result_len);
- DUK_ASSERT(result_len >= new_len && result_len <= old_len);
-
- DUK_ASSERT(desc.e_idx >= 0);
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx));
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- /* no decref needed for a number */
- DUK_TVAL_SET_FASTINT_U32(tv, result_len);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
-
- /* XXX: shrink array allocation or entries compaction here? */
-
- return rc;
-}
-
-/*
- * PUTPROP: Ecmascript property write.
- *
- * Unlike Ecmascript primitive which returns nothing, returns 1 to indicate
- * success and 0 to indicate failure (assuming throw is not set).
- *
- * This is an extremely tricky function. Some examples:
- *
- * * Currently a decref may trigger a GC, which may compact an object's
- * property allocation. Consequently, any entry indices (e_idx) will
- * be potentially invalidated by a decref.
- *
- * * Exotic behaviors (strings, arrays, arguments object) require,
- * among other things:
- *
- * - Preprocessing before and postprocessing after an actual property
- * write. For example, array index write requires pre-checking the
- * array 'length' property for access control, and may require an
- * array 'length' update after the actual write has succeeded (but
- * not if it fails).
- *
- * - Deletion of multiple entries, as a result of array 'length' write.
- *
- * * Input values are taken as pointers which may point to the valstack.
- * If valstack is resized because of the put (this may happen at least
- * when the array part is abandoned), the pointers can be invalidated.
- * (We currently make a copy of all of the input values to avoid issues.)
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_putprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_tval *tv_val, duk_bool_t throw_flag) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval tv_obj_copy;
- duk_tval tv_key_copy;
- duk_tval tv_val_copy;
- duk_hobject *orig = NULL; /* NULL if tv_obj is primitive */
- duk_hobject *curr;
- duk_hstring *key = NULL;
- duk_propdesc desc;
- duk_tval *tv;
- duk_uint32_t arr_idx;
- duk_bool_t rc;
- duk_int_t e_idx;
- duk_uint_t sanity;
- duk_uint32_t new_array_length = 0; /* 0 = no update */
-
- DUK_DDD(DUK_DDDPRINT("putprop: thr=%p, obj=%p, key=%p, val=%p, throw=%ld "
- "(obj -> %!T, key -> %!T, val -> %!T)",
- (void *) thr, (void *) tv_obj, (void *) tv_key, (void *) tv_val,
- (long) throw_flag, (duk_tval *) tv_obj, (duk_tval *) tv_key, (duk_tval *) tv_val));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv_obj != NULL);
- DUK_ASSERT(tv_key != NULL);
- DUK_ASSERT(tv_val != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /*
- * Make a copy of tv_obj, tv_key, and tv_val to avoid any issues of
- * them being invalidated by a valstack resize.
- *
- * XXX: this is an overkill for some paths, so optimize this later
- * (or maybe switch to a stack arguments model entirely).
- */
-
- DUK_TVAL_SET_TVAL(&tv_obj_copy, tv_obj);
- DUK_TVAL_SET_TVAL(&tv_key_copy, tv_key);
- DUK_TVAL_SET_TVAL(&tv_val_copy, tv_val);
- tv_obj = &tv_obj_copy;
- tv_key = &tv_key_copy;
- tv_val = &tv_val_copy;
-
- /*
- * Coercion and fast path processing.
- */
-
- switch (DUK_TVAL_GET_TAG(tv_obj)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL: {
- /* Note: unconditional throw */
- DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject (object=%!iT)",
- (duk_tval *) tv_obj));
-#if defined(DUK_USE_PARANOID_ERRORS)
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE);
-#else
- DUK_ERROR_FMT2(thr, DUK_ERR_TYPE_ERROR, "cannot write property %s of %s",
- duk_push_string_tval_readable(ctx, tv_key), duk_push_string_tval_readable(ctx, tv_obj));
-#endif
- return 0;
- }
-
- case DUK_TAG_BOOLEAN: {
- DUK_DDD(DUK_DDDPRINT("base object is a boolean, start lookup from boolean prototype"));
- curr = thr->builtins[DUK_BIDX_BOOLEAN_PROTOTYPE];
- break;
- }
-
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj);
-
- /*
- * Note: currently no fast path for array index writes.
- * They won't be possible anyway as strings are immutable.
- */
-
- DUK_ASSERT(key == NULL);
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- goto fail_not_writable;
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HSTRING_GET_CHARLEN(h)) {
- goto fail_not_writable;
- }
-
- DUK_DDD(DUK_DDDPRINT("base object is a string, start lookup from string prototype"));
- curr = thr->builtins[DUK_BIDX_STRING_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
- case DUK_TAG_OBJECT: {
- orig = DUK_TVAL_GET_OBJECT(tv_obj);
- DUK_ASSERT(orig != NULL);
-
-#if defined(DUK_USE_ROM_OBJECTS)
- /* With this check in place fast paths won't need read-only
- * object checks. This is technically incorrect if there are
- * setters that cause no writes to ROM objects, but current
- * built-ins don't have such setters.
- */
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) {
- DUK_DD(DUK_DDPRINT("attempt to putprop on read-only target object"));
- goto fail_not_writable_no_pop; /* Must avoid duk_pop() in exit path */
- }
-#endif
-
- /* The fast path for array property put is not fully compliant:
- * If one places conflicting number-indexed properties into
- * Array.prototype (for example, a non-writable Array.prototype[7])
- * the fast path will incorrectly ignore them.
- *
- * This fast path could be made compliant by falling through
- * to the slow path if the previous value was UNUSED. This would
- * also remove the need to check for extensibility. Right now a
- * non-extensible array is slower than an extensible one as far
- * as writes are concerned.
- *
- * The fast path behavior is documented in more detail here:
- * tests/ecmascript/test-misc-array-fast-write.js
- */
-
- if (duk__putprop_shallow_fastpath_array_tval(thr, orig, tv_key, tv_val, &desc) != 0) {
- DUK_DDD(DUK_DDDPRINT("array fast path success"));
- return 1;
- }
-
- if (duk__putprop_fastpath_bufobj_tval(thr, orig, tv_key, tv_val) != 0) {
- DUK_DDD(DUK_DDDPRINT("base is bufobj, key is a number, bufferobject fast path"));
- return 1;
- }
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(orig))) {
- duk_hobject *h_target;
- duk_bool_t tmp_bool;
-
- if (duk__proxy_check_prop(thr, orig, DUK_STRIDX_SET, tv_key, &h_target)) {
- /* -> [ ... trap handler ] */
- DUK_DDD(DUK_DDDPRINT("-> proxy object 'set' for key %!T", (duk_tval *) tv_key));
- duk_push_hobject(ctx, h_target); /* target */
- duk_push_tval(ctx, tv_key); /* P */
- duk_push_tval(ctx, tv_val); /* V */
- duk_push_tval(ctx, tv_obj); /* Receiver: Proxy object */
- duk_call_method(ctx, 4 /*nargs*/);
- tmp_bool = duk_to_boolean(ctx, -1);
- duk_pop(ctx);
- if (!tmp_bool) {
- goto fail_proxy_rejected;
- }
-
- /* Target object must be checked for a conflicting
- * non-configurable property.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- duk_tval *tv_targ = duk_require_tval(ctx, -1);
- duk_bool_t datadesc_reject;
- duk_bool_t accdesc_reject;
-
- DUK_DDD(DUK_DDDPRINT("proxy 'set': target has matching property %!O, check for "
- "conflicting property; tv_val=%!T, tv_targ=%!T, desc.flags=0x%08lx, "
- "desc.get=%p, desc.set=%p",
- (duk_heaphdr *) key, (duk_tval *) tv_val, (duk_tval *) tv_targ,
- (unsigned long) desc.flags,
- (void *) desc.get, (void *) desc.set));
-
- datadesc_reject = !(desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) &&
- !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) &&
- !(desc.flags & DUK_PROPDESC_FLAG_WRITABLE) &&
- !duk_js_samevalue(tv_val, tv_targ);
- accdesc_reject = (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) &&
- !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) &&
- (desc.set == NULL);
- if (datadesc_reject || accdesc_reject) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
-
- duk_pop_2(ctx);
- } else {
- duk_pop(ctx);
- }
- return 1; /* success */
- }
-
- orig = h_target; /* resume write to target */
- DUK_TVAL_SET_OBJECT(tv_obj, orig);
- }
-#endif /* DUK_USE_ES6_PROXY */
-
- curr = orig;
- break;
- }
-
- case DUK_TAG_BUFFER: {
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj);
- duk_int_t pop_count = 0;
-
- /*
- * Because buffer values may be looped over and read/written
- * from, an array index fast path is important.
- */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_key)) {
- arr_idx = duk__tval_fastint_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path fastint; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- } else
-#endif
- if (DUK_TVAL_IS_NUMBER(tv_key)) {
- arr_idx = duk__tval_number_to_arr_idx(tv_key);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a fast-path number; arr_idx %ld", (long) arr_idx));
- pop_count = 0;
- } else {
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- pop_count = 1;
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HBUFFER_GET_SIZE(h)) {
- duk_uint8_t *data;
- DUK_DDD(DUK_DDDPRINT("writing to buffer data at index %ld", (long) arr_idx));
- data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h);
-
- /* XXX: duk_to_int() ensures we'll get 8 lowest bits as
- * as input is within duk_int_t range (capped outside it).
- */
-#if defined(DUK_USE_FASTINT)
- /* Buffer writes are often integers. */
- if (DUK_TVAL_IS_FASTINT(tv_val)) {
- data[arr_idx] = (duk_uint8_t) DUK_TVAL_GET_FASTINT_U32(tv_val);
- }
- else
-#endif
- {
- duk_push_tval(ctx, tv_val);
- data[arr_idx] = (duk_uint8_t) duk_to_uint32(ctx, -1);
- pop_count++;
- }
-
- duk_pop_n(ctx, pop_count);
- DUK_DDD(DUK_DDDPRINT("result: success (buffer data write)"));
- return 1;
- }
-
- if (pop_count == 0) {
- /* This is a pretty awkward control flow, but we need to recheck the
- * key coercion here.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
- DUK_DDD(DUK_DDDPRINT("base object buffer, key is a non-fast-path number; after "
- "coercion key is %!T, arr_idx %ld",
- (duk_tval *) duk_get_tval(ctx, -1), (long) arr_idx));
- }
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr) ||
- key == DUK_HTHREAD_STRING_BYTE_LENGTH(thr) ||
- key == DUK_HTHREAD_STRING_BYTE_OFFSET(thr) ||
- key == DUK_HTHREAD_STRING_BYTES_PER_ELEMENT(thr)) {
- goto fail_not_writable;
- }
-
- DUK_DDD(DUK_DDDPRINT("base object is a buffer, start lookup from buffer prototype"));
- curr = thr->builtins[DUK_BIDX_BUFFER_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
- case DUK_TAG_POINTER: {
- DUK_DDD(DUK_DDDPRINT("base object is a pointer, start lookup from pointer prototype"));
- curr = thr->builtins[DUK_BIDX_POINTER_PROTOTYPE];
- break;
- }
-
- case DUK_TAG_LIGHTFUNC: {
- /* All lightfunc own properties are non-writable and the lightfunc
- * is considered non-extensible. However, the write may be captured
- * by an inherited setter which means we can't stop the lookup here.
- */
-
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
-
- if (duk__key_is_lightfunc_ownprop(thr, key)) {
- goto fail_not_writable;
- }
-
- DUK_DDD(DUK_DDDPRINT("base object is a lightfunc, start lookup from function prototype"));
- curr = thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE];
- goto lookup; /* avoid double coercion */
- }
-
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* number */
- DUK_DDD(DUK_DDDPRINT("base object is a number, start lookup from number prototype"));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_obj));
- curr = thr->builtins[DUK_BIDX_NUMBER_PROTOTYPE];
- break;
- }
- }
-
- DUK_ASSERT(key == NULL);
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- lookup:
-
- /*
- * Check whether the property already exists in the prototype chain.
- * Note that the actual write goes into the original base object
- * (except if an accessor property captures the write).
- */
-
- /* [key] */
-
- DUK_ASSERT(curr != NULL);
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- if (!duk__get_own_propdesc_raw(thr, curr, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */
- goto next_in_chain;
- }
-
- if (desc.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- /*
- * Found existing accessor property (own or inherited).
- * Call setter with 'this' set to orig, and value as the only argument.
- * Setter calls are OK even for ROM objects.
- *
- * Note: no exotic arguments object behavior, because [[Put]] never
- * calls [[DefineOwnProperty]] (E5 Section 8.12.5, step 5.b).
- */
-
- duk_hobject *setter;
-
- DUK_DD(DUK_DDPRINT("put to an own or inherited accessor, calling setter"));
-
- setter = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, curr, desc.e_idx);
- if (!setter) {
- goto fail_no_setter;
- }
- duk_push_hobject(ctx, setter);
- duk_push_tval(ctx, tv_obj); /* note: original, uncoerced base */
- duk_push_tval(ctx, tv_val); /* [key setter this val] */
-#ifdef DUK_USE_NONSTD_SETTER_KEY_ARGUMENT
- duk_dup(ctx, -4);
- duk_call_method(ctx, 2); /* [key setter this val key] -> [key retval] */
-#else
- duk_call_method(ctx, 1); /* [key setter this val] -> [key retval] */
-#endif
- duk_pop(ctx); /* ignore retval -> [key] */
- goto success_no_arguments_exotic;
- }
-
- if (orig == NULL) {
- /*
- * Found existing own or inherited plain property, but original
- * base is a primitive value.
- */
- DUK_DD(DUK_DDPRINT("attempt to create a new property in a primitive base object"));
- goto fail_base_primitive;
- }
-
- if (curr != orig) {
- /*
- * Found existing inherited plain property.
- * Do an access control check, and if OK, write
- * new property to 'orig'.
- */
- if (!DUK_HOBJECT_HAS_EXTENSIBLE(orig)) {
- DUK_DD(DUK_DDPRINT("found existing inherited plain property, but original object is not extensible"));
- goto fail_not_extensible;
- }
- if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- DUK_DD(DUK_DDPRINT("found existing inherited plain property, original object is extensible, but inherited property is not writable"));
- goto fail_not_writable;
- }
- DUK_DD(DUK_DDPRINT("put to new property, object extensible, inherited property found and is writable"));
- goto create_new;
- } else {
- /*
- * Found existing own (non-inherited) plain property.
- * Do an access control check and update in place.
- */
-
- if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- DUK_DD(DUK_DDPRINT("found existing own (non-inherited) plain property, but property is not writable"));
- goto fail_not_writable;
- }
- if (desc.flags & DUK_PROPDESC_FLAG_VIRTUAL) {
- DUK_DD(DUK_DDPRINT("found existing own (non-inherited) virtual property, property is writable"));
- if (DUK_HOBJECT_IS_BUFFEROBJECT(curr)) {
- duk_hbufferobject *h_bufobj;
- duk_uint_t byte_off;
- duk_small_uint_t elem_size;
-
- h_bufobj = (duk_hbufferobject *) curr;
- DUK_ASSERT_HBUFFEROBJECT_VALID(h_bufobj);
-
- DUK_DD(DUK_DDPRINT("writable virtual property is in buffer object"));
-
- /* Careful with wrapping: arr_idx upshift may easily wrap, whereas
- * length downshift won't.
- */
- if (arr_idx < (h_bufobj->length >> h_bufobj->shift)) {
- duk_uint8_t *data;
- DUK_DDD(DUK_DDDPRINT("writing to buffer data at index %ld", (long) arr_idx));
-
- DUK_ASSERT(arr_idx != DUK__NO_ARRAY_INDEX); /* index/length check guarantees */
- byte_off = arr_idx << h_bufobj->shift; /* no wrap assuming h_bufobj->length is valid */
- elem_size = 1 << h_bufobj->shift;
-
- /* Coerce to number before validating pointers etc so that the
- * number coercions in duk_hbufferobject_validated_write() are
- * guaranteed to be side effect free and not invalidate the
- * pointer checks we do here.
- */
- duk_push_tval(ctx, tv_val);
- duk_to_number(ctx, -1);
-
- if (h_bufobj->buf != NULL && DUK_HBUFFEROBJECT_VALID_BYTEOFFSET_EXCL(h_bufobj, byte_off + elem_size)) {
- data = (duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_bufobj->buf) + h_bufobj->offset + byte_off;
- duk_hbufferobject_validated_write(ctx, h_bufobj, data, elem_size);
- } else {
- DUK_D(DUK_DPRINT("bufferobject access out of underlying buffer, ignoring (write skipped)"));
- }
- duk_pop(ctx);
- goto success_no_arguments_exotic;
- }
- }
-
- goto fail_internal; /* should not happen */
- }
- DUK_DD(DUK_DDPRINT("put to existing own plain property, property is writable"));
- goto update_old;
- }
- DUK_UNREACHABLE();
-
- next_in_chain:
- /* XXX: option to pretend property doesn't exist if sanity limit is
- * hit might be useful.
- */
- if (sanity-- == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- curr = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, curr);
- } while (curr);
-
- /*
- * Property not found in prototype chain.
- */
-
- DUK_DDD(DUK_DDDPRINT("property not found in prototype chain"));
-
- if (orig == NULL) {
- DUK_DD(DUK_DDPRINT("attempt to create a new property in a primitive base object"));
- goto fail_base_primitive;
- }
-
- if (!DUK_HOBJECT_HAS_EXTENSIBLE(orig)) {
- DUK_DD(DUK_DDPRINT("put to a new property (not found in prototype chain), but original object not extensible"));
- goto fail_not_extensible;
- }
-
- goto create_new;
-
- update_old:
-
- /*
- * Update an existing property of the base object.
- */
-
- /* [key] */
-
- DUK_DDD(DUK_DDDPRINT("update an existing property of the original object"));
-
- DUK_ASSERT(orig != NULL);
-#if defined(DUK_USE_ROM_OBJECTS)
- /* This should not happen because DUK_TAG_OBJECT case checks
- * for this already, but check just in case.
- */
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) {
- goto fail_not_writable;
- }
-#endif
-
- /* Although there are writable virtual properties (e.g. plain buffer
- * and buffer object number indices), they are handled before we come
- * here.
- */
- DUK_ASSERT((desc.flags & DUK_PROPDESC_FLAG_VIRTUAL) == 0);
- DUK_ASSERT(desc.a_idx >= 0 || desc.e_idx >= 0);
-
- if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig) &&
- key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- /*
- * Write to 'length' of an array is a very complex case
- * handled in a helper which updates both the array elements
- * and writes the new 'length'. The write may result in an
- * unconditional RangeError or a partial write (indicated
- * by a return code).
- *
- * Note: the helper has an unnecessary writability check
- * for 'length', we already know it is writable.
- */
-
- DUK_DDD(DUK_DDDPRINT("writing existing 'length' property to array exotic, invoke complex helper"));
-
- /* XXX: the helper currently assumes stack top contains new
- * 'length' value and the whole calling convention is not very
- * compatible with what we need.
- */
-
- duk_push_tval(ctx, tv_val); /* [key val] */
- rc = duk__handle_put_array_length(thr, orig);
- duk_pop(ctx); /* [key val] -> [key] */
- if (!rc) {
- goto fail_array_length_partial;
- }
-
- /* key is 'length', cannot match argument exotic behavior */
- goto success_no_arguments_exotic;
- }
-
- if (desc.e_idx >= 0) {
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, desc.e_idx);
- DUK_DDD(DUK_DDDPRINT("previous entry value: %!iT", (duk_tval *) tv));
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
- /* don't touch property attributes or hash part */
- DUK_DD(DUK_DDPRINT("put to an existing entry at index %ld -> new value %!iT",
- (long) desc.e_idx, (duk_tval *) tv));
- } else {
- /* Note: array entries are always writable, so the writability check
- * above is pointless for them. The check could be avoided with some
- * refactoring but is probably not worth it.
- */
-
- DUK_ASSERT(desc.a_idx >= 0);
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, desc.a_idx);
- DUK_DDD(DUK_DDDPRINT("previous array value: %!iT", (duk_tval *) tv));
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv_val); /* side effects */
- DUK_DD(DUK_DDPRINT("put to an existing array entry at index %ld -> new value %!iT",
- (long) desc.a_idx, (duk_tval *) tv));
- }
-
- /* Regardless of whether property is found in entry or array part,
- * it may have arguments exotic behavior (array indices may reside
- * in entry part for abandoned / non-existent array parts).
- */
- goto success_with_arguments_exotic;
-
- create_new:
-
- /*
- * Create a new property in the original object.
- *
- * Exotic properties need to be reconsidered here from a write
- * perspective (not just property attributes perspective).
- * However, the property does not exist in the object already,
- * so this limits the kind of exotic properties that apply.
- */
-
- /* [key] */
-
- DUK_DDD(DUK_DDDPRINT("create new property to original object"));
-
- DUK_ASSERT(orig != NULL);
-
-#if defined(DUK_USE_ROM_OBJECTS)
- /* This should not happen because DUK_TAG_OBJECT case checks
- * for this already, but check just in case.
- */
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) orig)) {
- goto fail_not_writable;
- }
-#endif
-
- /* Not possible because array object 'length' is present
- * from its creation and cannot be deleted, and is thus
- * caught as an existing property above.
- */
- DUK_ASSERT(!(DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig) &&
- key == DUK_HTHREAD_STRING_LENGTH(thr)));
-
- if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(orig) &&
- arr_idx != DUK__NO_ARRAY_INDEX) {
- /* automatic length update */
- duk_uint32_t old_len;
-
- old_len = duk__get_old_array_length(thr, orig, &desc);
-
- if (arr_idx >= old_len) {
- DUK_DDD(DUK_DDDPRINT("write new array entry requires length update "
- "(arr_idx=%ld, old_len=%ld)",
- (long) arr_idx, (long) old_len));
-
- if (!(desc.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- DUK_DD(DUK_DDPRINT("attempt to extend array, but array 'length' is not writable"));
- goto fail_not_writable;
- }
-
- /* Note: actual update happens once write has been completed
- * without error below. The write should always succeed
- * from a specification viewpoint, but we may e.g. run out
- * of memory. It's safer in this order.
- */
-
- DUK_ASSERT(arr_idx != 0xffffffffUL);
- new_array_length = arr_idx + 1; /* flag for later write */
- } else {
- DUK_DDD(DUK_DDDPRINT("write new array entry does not require length update "
- "(arr_idx=%ld, old_len=%ld)",
- (long) arr_idx, (long) old_len));
- }
- }
-
- /* write_to_array_part: */
-
- /*
- * Write to array part?
- *
- * Note: array abandonding requires a property resize which uses
- * 'rechecks' valstack for temporaries and may cause any existing
- * valstack pointers to be invalidated. To protect against this,
- * tv_obj, tv_key, and tv_val are copies of the original inputs.
- */
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- DUK_HOBJECT_HAS_ARRAY_PART(orig)) {
- if (arr_idx < DUK_HOBJECT_GET_ASIZE(orig)) {
- goto no_array_growth;
- }
-
- /*
- * Array needs to grow, but we don't want it becoming too sparse.
- * If it were to become sparse, abandon array part, moving all
- * array entries into the entries part (for good).
- *
- * Since we don't keep track of actual density (used vs. size) of
- * the array part, we need to estimate somehow. The check is made
- * in two parts:
- *
- * - Check whether the resize need is small compared to the
- * current size (relatively); if so, resize without further
- * checking (essentially we assume that the original part is
- * "dense" so that the result would be dense enough).
- *
- * - Otherwise, compute the resize using an actual density
- * measurement based on counting the used array entries.
- */
-
- DUK_DDD(DUK_DDDPRINT("write to new array requires array resize, decide whether to do a "
- "fast resize without abandon check (arr_idx=%ld, old_size=%ld)",
- (long) arr_idx, (long) DUK_HOBJECT_GET_ASIZE(orig)));
-
- if (duk__abandon_array_slow_check_required(arr_idx, DUK_HOBJECT_GET_ASIZE(orig))) {
- duk_uint32_t old_used;
- duk_uint32_t old_size;
-
- DUK_DDD(DUK_DDDPRINT("=> fast check is NOT OK, do slow check for array abandon"));
-
- duk__compute_a_stats(thr, orig, &old_used, &old_size);
-
- DUK_DDD(DUK_DDDPRINT("abandon check, array stats: old_used=%ld, old_size=%ld, arr_idx=%ld",
- (long) old_used, (long) old_size, (long) arr_idx));
-
- /* Note: intentionally use approximations to shave a few instructions:
- * a_used = old_used (accurate: old_used + 1)
- * a_size = arr_idx (accurate: arr_idx + 1)
- */
- if (duk__abandon_array_density_check(old_used, arr_idx)) {
- DUK_DD(DUK_DDPRINT("write to new array entry beyond current length, "
- "decided to abandon array part (would become too sparse)"));
-
- /* abandoning requires a props allocation resize and
- * 'rechecks' the valstack, invalidating any existing
- * valstack value pointers!
- */
- duk__abandon_array_checked(thr, orig);
- DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(orig));
-
- goto write_to_entry_part;
- }
-
- DUK_DDD(DUK_DDDPRINT("=> decided to keep array part"));
- } else {
- DUK_DDD(DUK_DDDPRINT("=> fast resize is OK"));
- }
-
- DUK_DD(DUK_DDPRINT("write to new array entry beyond current length, "
- "decided to extend current allocation"));
-
- duk__grow_props_for_array_item(thr, orig, arr_idx);
-
- no_array_growth:
-
- /* Note: assume array part is comprehensive, so that either
- * the write goes to the array part, or we've abandoned the
- * array above (and will not come here).
- */
-
- DUK_ASSERT(DUK_HOBJECT_HAS_ARRAY_PART(orig));
- DUK_ASSERT(arr_idx < DUK_HOBJECT_GET_ASIZE(orig));
-
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, orig, arr_idx);
- /* prev value must be unused, no decref */
- DUK_ASSERT(DUK_TVAL_IS_UNUSED(tv));
- DUK_TVAL_SET_TVAL(tv, tv_val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_DD(DUK_DDPRINT("put to new array entry: %ld -> %!T",
- (long) arr_idx, (duk_tval *) tv));
-
- /* Note: array part values are [[Writable]], [[Enumerable]],
- * and [[Configurable]] which matches the required attributes
- * here.
- */
- goto entry_updated;
- }
-
- write_to_entry_part:
-
- /*
- * Write to entry part
- */
-
- /* entry allocation updates hash part and increases the key
- * refcount; may need a props allocation resize but doesn't
- * 'recheck' the valstack.
- */
- e_idx = duk__alloc_entry_checked(thr, orig, key);
- DUK_ASSERT(e_idx >= 0);
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, e_idx);
- /* prev value can be garbage, no decref */
- DUK_TVAL_SET_TVAL(tv, tv_val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, orig, e_idx, DUK_PROPDESC_FLAGS_WEC);
- goto entry_updated;
-
- entry_updated:
-
- /*
- * Possible pending array length update, which must only be done
- * if the actual entry write succeeded.
- */
-
- if (new_array_length > 0) {
- /*
- * Note: zero works as a "no update" marker because the new length
- * can never be zero after a new property is written.
- *
- * Note: must re-lookup because calls above (e.g. duk__alloc_entry_checked())
- * may realloc and compact properties and hence change e_idx.
- */
-
- DUK_DDD(DUK_DDDPRINT("write successful, pending array length update to: %ld",
- (long) new_array_length));
-
- rc = duk__get_own_propdesc_raw(thr, orig, DUK_HTHREAD_STRING_LENGTH(thr), DUK__NO_ARRAY_INDEX, &desc, 0 /*flags*/); /* don't push value */
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- DUK_ASSERT(desc.e_idx >= 0);
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, orig, desc.e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- /* no need for decref/incref because value is a number */
- DUK_TVAL_SET_FASTINT_U32(tv, new_array_length);
- }
-
- /*
- * Arguments exotic behavior not possible for new properties: all
- * magically bound properties are initially present in the arguments
- * object, and if they are deleted, the binding is also removed from
- * parameter map.
- */
-
- goto success_no_arguments_exotic;
-
- success_with_arguments_exotic:
-
- /*
- * Arguments objects have exotic [[DefineOwnProperty]] which updates
- * the internal 'map' of arguments for writes to currently mapped
- * arguments. More conretely, writes to mapped arguments generate
- * a write to a bound variable.
- *
- * The [[Put]] algorithm invokes [[DefineOwnProperty]] for existing
- * data properties and new properties, but not for existing accessors.
- * Hence, in E5 Section 10.6 ([[DefinedOwnProperty]] algorithm), we
- * have a Desc with 'Value' (and possibly other properties too), and
- * we end up in step 5.b.i.
- */
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(orig)) {
- /* Note: only numbered indices are relevant, so arr_idx fast reject
- * is good (this is valid unless there are more than 4**32-1 arguments).
- */
-
- DUK_DDD(DUK_DDDPRINT("putprop successful, arguments exotic behavior needed"));
-
- /* Note: we can reuse 'desc' here */
-
- /* XXX: top of stack must contain value, which helper doesn't touch,
- * rework to use tv_val directly?
- */
-
- duk_push_tval(ctx, tv_val);
- (void) duk__check_arguments_map_for_put(thr, orig, key, &desc, throw_flag);
- duk_pop(ctx);
- }
- /* fall thru */
-
- success_no_arguments_exotic:
- /* shared exit path now */
- DUK_DDD(DUK_DDDPRINT("result: success"));
- duk_pop(ctx); /* remove key */
- return 1;
-
-#if defined(DUK_USE_ES6_PROXY)
- fail_proxy_rejected:
- DUK_DDD(DUK_DDDPRINT("result: error, proxy rejects"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
- /* Note: no key on stack */
- return 0;
-#endif
-
- fail_base_primitive:
- DUK_DDD(DUK_DDDPRINT("result: error, base primitive"));
- if (throw_flag) {
-#if defined(DUK_USE_PARANOID_ERRORS)
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE);
-#else
- DUK_ERROR_FMT2(thr, DUK_ERR_TYPE_ERROR, "cannot write property %s of %s",
- duk_push_string_tval_readable(ctx, tv_key), duk_push_string_tval_readable(ctx, tv_obj));
-#endif
- }
- duk_pop(ctx); /* remove key */
- return 0;
-
- fail_not_extensible:
- DUK_DDD(DUK_DDDPRINT("result: error, not extensible"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_EXTENSIBLE);
- }
- duk_pop(ctx); /* remove key */
- return 0;
-
- fail_not_writable:
- DUK_DDD(DUK_DDDPRINT("result: error, not writable"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_WRITABLE);
- }
- duk_pop(ctx); /* remove key */
- return 0;
-
-#if defined(DUK_USE_ROM_OBJECTS)
- fail_not_writable_no_pop:
- DUK_DDD(DUK_DDDPRINT("result: error, not writable"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_WRITABLE);
- }
- return 0;
-#endif
-
- fail_array_length_partial:
- DUK_DDD(DUK_DDDPRINT("result: error, array length write only partially successful"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_ARRAY_LENGTH_WRITE_FAILED);
- }
- duk_pop(ctx); /* remove key */
- return 0;
-
- fail_no_setter:
- DUK_DDD(DUK_DDDPRINT("result: error, accessor property without setter"));
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_SETTER_UNDEFINED);
- }
- duk_pop(ctx); /* remove key */
- return 0;
-
- fail_internal:
- DUK_DDD(DUK_DDDPRINT("result: error, internal"));
- if (throw_flag) {
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- }
- duk_pop(ctx); /* remove key */
- return 0;
-}
-
-/*
- * Ecmascript compliant [[Delete]](P, Throw).
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_delprop_raw(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags) {
- duk_propdesc desc;
- duk_tval *tv;
- duk_uint32_t arr_idx;
- duk_bool_t throw_flag;
- duk_bool_t force_flag;
-
- throw_flag = (flags & DUK_DELPROP_FLAG_THROW);
- force_flag = (flags & DUK_DELPROP_FLAG_FORCE);
-
- DUK_DDD(DUK_DDDPRINT("delprop_raw: thr=%p, obj=%p, key=%p, throw=%ld, force=%ld (obj -> %!O, key -> %!O)",
- (void *) thr, (void *) obj, (void *) key, (long) throw_flag, (long) force_flag,
- (duk_heaphdr *) obj, (duk_heaphdr *) key));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key);
-
- /* 0 = don't push current value */
- if (!duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */
- DUK_DDD(DUK_DDDPRINT("property not found, succeed always"));
- goto success;
- }
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) {
- DUK_DD(DUK_DDPRINT("attempt to delprop on read-only target object"));
- goto fail_not_configurable;
- }
-#endif
-
- if ((desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) == 0 && !force_flag) {
- goto fail_not_configurable;
- }
- if (desc.a_idx < 0 && desc.e_idx < 0) {
- /* Currently there are no deletable virtual properties, but
- * with force_flag we might attempt to delete one.
- */
- goto fail_virtual;
- }
-
- if (desc.a_idx >= 0) {
- DUK_ASSERT(desc.e_idx < 0);
-
- tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx);
- DUK_TVAL_SET_UNUSED_UPDREF(thr, tv); /* side effects */
- goto success;
- } else {
- DUK_ASSERT(desc.a_idx < 0);
-
- /* remove hash entry (no decref) */
-#if defined(DUK_USE_HOBJECT_HASH_PART)
- if (desc.h_idx >= 0) {
- duk_uint32_t *h_base = DUK_HOBJECT_H_GET_BASE(thr->heap, obj);
-
- DUK_DDD(DUK_DDDPRINT("removing hash entry at h_idx %ld", (long) desc.h_idx));
- DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) > 0);
- DUK_ASSERT((duk_uint32_t) desc.h_idx < DUK_HOBJECT_GET_HSIZE(obj));
- h_base[desc.h_idx] = DUK__HASH_DELETED;
- } else {
- DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) == 0);
- }
-#else
- DUK_ASSERT(DUK_HOBJECT_GET_HSIZE(obj) == 0);
-#endif
-
- /* remove value */
- DUK_DDD(DUK_DDDPRINT("before removing value, e_idx %ld, key %p, key at slot %p",
- (long) desc.e_idx, (void *) key, (void *) DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx)));
- DUK_DDD(DUK_DDDPRINT("removing value at e_idx %ld", (long) desc.e_idx));
- if (DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx)) {
- duk_hobject *tmp;
-
- tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, desc.e_idx);
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, desc.e_idx, NULL);
- DUK_UNREF(tmp);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
-
- tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, desc.e_idx);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, desc.e_idx, NULL);
- DUK_UNREF(tmp);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
- } else {
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv); /* side effects */
- }
-#if 0
- /* Not strictly necessary because if key == NULL, flag MUST be ignored. */
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, 0);
-#endif
-
- /* remove key */
- DUK_DDD(DUK_DDDPRINT("before removing key, e_idx %ld, key %p, key at slot %p",
- (long) desc.e_idx, (void *) key, (void *) DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx)));
- DUK_DDD(DUK_DDDPRINT("removing key at e_idx %ld", (long) desc.e_idx));
- DUK_ASSERT(key == DUK_HOBJECT_E_GET_KEY(thr->heap, obj, desc.e_idx));
- DUK_HOBJECT_E_SET_KEY(thr->heap, obj, desc.e_idx, NULL);
- DUK_HSTRING_DECREF(thr, key); /* side effects */
- goto success;
- }
-
- DUK_UNREACHABLE();
-
- success:
- /*
- * Argument exotic [[Delete]] behavior (E5 Section 10.6) is
- * a post-check, keeping arguments internal 'map' in sync with
- * any successful deletes (note that property does not need to
- * exist for delete to 'succeed').
- *
- * Delete key from 'map'. Since 'map' only contains array index
- * keys, we can use arr_idx for a fast skip.
- */
-
- DUK_DDD(DUK_DDDPRINT("delete successful, check for arguments exotic behavior"));
-
- if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)) {
- /* Note: only numbered indices are relevant, so arr_idx fast reject
- * is good (this is valid unless there are more than 4**32-1 arguments).
- */
-
- DUK_DDD(DUK_DDDPRINT("delete successful, arguments exotic behavior needed"));
-
- /* Note: we can reuse 'desc' here */
- (void) duk__check_arguments_map_for_delete(thr, obj, key, &desc);
- }
-
- DUK_DDD(DUK_DDDPRINT("delete successful"));
- return 1;
-
- fail_virtual:
- DUK_DDD(DUK_DDDPRINT("delete failed: property found, force flag, but virtual"));
-
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROPERTY_IS_VIRTUAL);
- }
- return 0;
-
- fail_not_configurable:
- DUK_DDD(DUK_DDDPRINT("delete failed: property found, not configurable"));
-
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE);
- }
- return 0;
-}
-
-/*
- * DELPROP: Ecmascript property deletion.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_delprop(duk_hthread *thr, duk_tval *tv_obj, duk_tval *tv_key, duk_bool_t throw_flag) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *key = NULL;
-#if defined(DUK_USE_ES6_PROXY)
- duk_propdesc desc;
-#endif
- duk_int_t entry_top;
- duk_uint32_t arr_idx = DUK__NO_ARRAY_INDEX;
- duk_bool_t rc;
-
- DUK_DDD(DUK_DDDPRINT("delprop: thr=%p, obj=%p, key=%p (obj -> %!T, key -> %!T)",
- (void *) thr, (void *) tv_obj, (void *) tv_key,
- (duk_tval *) tv_obj, (duk_tval *) tv_key));
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(tv_obj != NULL);
- DUK_ASSERT(tv_key != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /* Storing the entry top is cheaper here to ensure stack is correct at exit,
- * as there are several paths out.
- */
- entry_top = duk_get_top(ctx);
-
- if (DUK_TVAL_IS_UNDEFINED(tv_obj) ||
- DUK_TVAL_IS_NULL(tv_obj)) {
- DUK_DDD(DUK_DDDPRINT("base object is undefined or null -> reject"));
- goto fail_invalid_base_uncond;
- }
-
- duk_push_tval(ctx, tv_obj);
- duk_push_tval(ctx, tv_key);
-
- tv_obj = DUK_GET_TVAL_NEGIDX(ctx, -2);
- if (DUK_TVAL_IS_OBJECT(tv_obj)) {
- duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv_obj);
- DUK_ASSERT(obj != NULL);
-
-#if defined(DUK_USE_ES6_PROXY)
- if (DUK_UNLIKELY(DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(obj))) {
- duk_hobject *h_target;
- duk_bool_t tmp_bool;
-
- /* Note: proxy handling must happen before key is string coerced. */
-
- if (duk__proxy_check_prop(thr, obj, DUK_STRIDX_DELETE_PROPERTY, tv_key, &h_target)) {
- /* -> [ ... trap handler ] */
- DUK_DDD(DUK_DDDPRINT("-> proxy object 'deleteProperty' for key %!T", (duk_tval *) tv_key));
- duk_push_hobject(ctx, h_target); /* target */
- duk_push_tval(ctx, tv_key); /* P */
- duk_call_method(ctx, 2 /*nargs*/);
- tmp_bool = duk_to_boolean(ctx, -1);
- duk_pop(ctx);
- if (!tmp_bool) {
- goto fail_proxy_rejected; /* retval indicates delete failed */
- }
-
- /* Target object must be checked for a conflicting
- * non-configurable property.
- */
- arr_idx = duk__push_tval_to_hstring_arr_idx(ctx, tv_key, &key);
- DUK_ASSERT(key != NULL);
-
- if (duk__get_own_propdesc_raw(thr, h_target, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */
- int desc_reject;
-
- DUK_DDD(DUK_DDDPRINT("proxy 'deleteProperty': target has matching property %!O, check for "
- "conflicting property; desc.flags=0x%08lx, "
- "desc.get=%p, desc.set=%p",
- (duk_heaphdr *) key, (unsigned long) desc.flags,
- (void *) desc.get, (void *) desc.set));
-
- desc_reject = !(desc.flags & DUK_PROPDESC_FLAG_CONFIGURABLE);
- if (desc_reject) {
- /* unconditional */
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
- }
- rc = 1; /* success */
- goto done_rc;
- }
-
- obj = h_target; /* resume delete to target */
- }
-#endif /* DUK_USE_ES6_PROXY */
-
- duk_to_string(ctx, -1);
- key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(key != NULL);
-
- rc = duk_hobject_delprop_raw(thr, obj, key, throw_flag ? DUK_DELPROP_FLAG_THROW : 0);
- goto done_rc;
- } else if (DUK_TVAL_IS_STRING(tv_obj)) {
- /* XXX: unnecessary string coercion for array indices,
- * intentional to keep small.
- */
- duk_hstring *h = DUK_TVAL_GET_STRING(tv_obj);
- DUK_ASSERT(h != NULL);
-
- duk_to_string(ctx, -1);
- key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(key != NULL);
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- goto fail_not_configurable;
- }
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key);
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HSTRING_GET_CHARLEN(h)) {
- goto fail_not_configurable;
- }
- } else if (DUK_TVAL_IS_BUFFER(tv_obj)) {
- /* XXX: unnecessary string coercion for array indices,
- * intentional to keep small; some overlap with string
- * handling.
- */
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv_obj);
- DUK_ASSERT(h != NULL);
-
- duk_to_string(ctx, -1);
- key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(key != NULL);
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- goto fail_not_configurable;
- }
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_FAST(key);
-
- if (arr_idx != DUK__NO_ARRAY_INDEX &&
- arr_idx < DUK_HBUFFER_GET_SIZE(h)) {
- goto fail_not_configurable;
- }
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv_obj)) {
- /* Lightfunc virtual properties are non-configurable, so
- * reject if match any of them.
- */
-
- duk_to_string(ctx, -1);
- key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(key != NULL);
-
- if (duk__key_is_lightfunc_ownprop(thr, key)) {
- goto fail_not_configurable;
- }
- }
-
- /* non-object base, no offending virtual property */
- rc = 1;
- goto done_rc;
-
- done_rc:
- duk_set_top(ctx, entry_top);
- return rc;
-
- fail_invalid_base_uncond:
- /* Note: unconditional throw */
- DUK_ASSERT(duk_get_top(ctx) == entry_top);
-#if defined(DUK_USE_PARANOID_ERRORS)
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_BASE);
-#else
- DUK_ERROR_FMT2(thr, DUK_ERR_TYPE_ERROR, "cannot delete property %s of %s",
- duk_push_string_tval_readable(ctx, tv_key), duk_push_string_tval_readable(ctx, tv_obj));
-#endif
- return 0;
-
-#if defined(DUK_USE_ES6_PROXY)
- fail_proxy_rejected:
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_PROXY_REJECTED);
- }
- duk_set_top(ctx, entry_top);
- return 0;
-#endif
-
- fail_not_configurable:
- if (throw_flag) {
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE);
- }
- duk_set_top(ctx, entry_top);
- return 0;
-}
-
-/*
- * Internal helper to define a property with specific flags, ignoring
- * normal semantics such as extensibility, write protection etc.
- * Overwrites any existing value and attributes unless caller requests
- * that value only be updated if it doesn't already exists.
- *
- * Does not support:
- * - virtual properties (error if write attempted)
- * - getter/setter properties (error if write attempted)
- * - non-default (!= WEC) attributes for array entries (error if attempted)
- * - array abandoning: if array part exists, it is always extended
- * - array 'length' updating
- *
- * Stack: [... in_val] -> []
- *
- * Used for e.g. built-in initialization and environment record
- * operations.
- */
-
-DUK_INTERNAL void duk_hobject_define_property_internal(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_small_uint_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_propdesc desc;
- duk_uint32_t arr_idx;
- duk_int_t e_idx;
- duk_tval *tv1 = NULL;
- duk_tval *tv2 = NULL;
- duk_small_uint_t propflags = flags & DUK_PROPDESC_FLAGS_MASK; /* mask out flags not actually stored */
-
- DUK_DDD(DUK_DDDPRINT("define new property (internal): thr=%p, obj=%!O, key=%!O, flags=0x%02lx, val=%!T",
- (void *) thr, (duk_heaphdr *) obj, (duk_heaphdr *) key,
- (unsigned long) flags, (duk_tval *) duk_get_tval(ctx, -1)));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj));
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
- DUK_ASSERT(duk_is_valid_index(ctx, -1)); /* contains value */
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key);
-
- if (duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &desc, 0 /*flags*/)) { /* don't push value */
- if (desc.e_idx >= 0) {
- if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) {
- DUK_DDD(DUK_DDDPRINT("property already exists in the entry part -> skip as requested"));
- goto pop_exit;
- }
- DUK_DDD(DUK_DDDPRINT("property already exists in the entry part -> update value and attributes"));
- if (DUK_UNLIKELY(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, desc.e_idx))) {
- DUK_D(DUK_DPRINT("existing property is an accessor, not supported"));
- goto error_internal;
- }
-
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, desc.e_idx, propflags);
- tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, desc.e_idx);
- } else if (desc.a_idx >= 0) {
- if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) {
- DUK_DDD(DUK_DDDPRINT("property already exists in the array part -> skip as requested"));
- goto pop_exit;
- }
- DUK_DDD(DUK_DDDPRINT("property already exists in the array part -> update value (assert attributes)"));
- if (propflags != DUK_PROPDESC_FLAGS_WEC) {
- DUK_D(DUK_DPRINT("existing property in array part, but propflags not WEC (0x%02lx)",
- (unsigned long) propflags));
- goto error_internal;
- }
-
- tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, desc.a_idx);
- } else {
- if (flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) {
- DUK_DDD(DUK_DDDPRINT("property already exists but is virtual -> skip as requested"));
- goto pop_exit;
- }
- DUK_DDD(DUK_DDDPRINT("property already exists but is virtual -> failure"));
- goto error_virtual;
- }
-
- goto write_value;
- }
-
- if (DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- if (arr_idx != DUK__NO_ARRAY_INDEX) {
- DUK_DDD(DUK_DDDPRINT("property does not exist, object has array part -> possibly extend array part and write value (assert attributes)"));
- DUK_ASSERT(propflags == DUK_PROPDESC_FLAGS_WEC);
-
- /* always grow the array, no sparse / abandon support here */
- if (arr_idx >= DUK_HOBJECT_GET_ASIZE(obj)) {
- duk__grow_props_for_array_item(thr, obj, arr_idx);
- }
-
- DUK_ASSERT(arr_idx < DUK_HOBJECT_GET_ASIZE(obj));
- tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx);
- goto write_value;
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("property does not exist, object belongs in entry part -> allocate new entry and write value and attributes"));
- e_idx = duk__alloc_entry_checked(thr, obj, key); /* increases key refcount */
- DUK_ASSERT(e_idx >= 0);
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, propflags);
- tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx);
- /* new entry: previous value is garbage; set to undefined to share write_value */
- DUK_TVAL_SET_UNDEFINED(tv1);
- goto write_value;
-
- write_value:
- /* tv1 points to value storage */
-
- tv2 = duk_require_tval(ctx, -1); /* late lookup, avoid side effects */
- DUK_DDD(DUK_DDDPRINT("writing/updating value: %!T -> %!T",
- (duk_tval *) tv1, (duk_tval *) tv2));
-
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
- goto pop_exit;
-
- pop_exit:
- duk_pop(ctx); /* remove in_val */
- return;
-
- error_internal:
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return;
-
- error_virtual:
- DUK_ERROR_TYPE(thr, DUK_STR_REDEFINE_VIRT_PROP);
- return;
-}
-
-/*
- * Fast path for defining array indexed values without interning the key.
- * This is used by e.g. code for Array prototype and traceback creation so
- * must avoid interning.
- */
-
-DUK_INTERNAL void duk_hobject_define_property_internal_arridx(duk_hthread *thr, duk_hobject *obj, duk_uarridx_t arr_idx, duk_small_uint_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *key;
- duk_tval *tv1, *tv2;
-
- DUK_DDD(DUK_DDDPRINT("define new property (internal) arr_idx fast path: thr=%p, obj=%!O, "
- "arr_idx=%ld, flags=0x%02lx, val=%!T",
- (void *) thr, obj, (long) arr_idx, (unsigned long) flags,
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj));
-
- if (DUK_HOBJECT_HAS_ARRAY_PART(obj) &&
- arr_idx != DUK__NO_ARRAY_INDEX &&
- flags == DUK_PROPDESC_FLAGS_WEC) {
- DUK_ASSERT((flags & DUK_PROPDESC_FLAG_NO_OVERWRITE) == 0); /* covered by comparison */
-
- DUK_DDD(DUK_DDDPRINT("define property to array part (property may or may not exist yet)"));
-
- /* always grow the array, no sparse / abandon support here */
- if (arr_idx >= DUK_HOBJECT_GET_ASIZE(obj)) {
- duk__grow_props_for_array_item(thr, obj, arr_idx);
- }
-
- DUK_ASSERT(arr_idx < DUK_HOBJECT_GET_ASIZE(obj));
- tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, arr_idx);
- tv2 = duk_require_tval(ctx, -1);
-
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
-
- duk_pop(ctx); /* [ ...val ] -> [ ... ] */
- return;
- }
-
- DUK_DDD(DUK_DDDPRINT("define property fast path didn't work, use slow path"));
-
- duk_push_uint(ctx, (duk_uint_t) arr_idx);
- key = duk_to_hstring(ctx, -1);
- DUK_ASSERT(key != NULL);
- duk_insert(ctx, -2); /* [ ... val key ] -> [ ... key val ] */
-
- duk_hobject_define_property_internal(thr, obj, key, flags);
-
- duk_pop(ctx); /* [ ... key ] -> [ ... ] */
-}
-
-/*
- * Internal helper for defining an accessor property, ignoring
- * normal semantics such as extensibility, write protection etc.
- * Overwrites any existing value and attributes. This is called
- * very rarely, so the implementation first sets a value to undefined
- * and then changes the entry to an accessor (this is to save code space).
- */
-
-DUK_INTERNAL void duk_hobject_define_accessor_internal(duk_hthread *thr, duk_hobject *obj, duk_hstring *key, duk_hobject *getter, duk_hobject *setter, duk_small_uint_t propflags) {
- duk_context *ctx = (duk_context *) thr;
- duk_int_t e_idx;
- duk_int_t h_idx;
-
- DUK_DDD(DUK_DDDPRINT("define new accessor (internal): thr=%p, obj=%!O, key=%!O, "
- "getter=%!O, setter=%!O, flags=0x%02lx",
- (void *) thr, (duk_heaphdr *) obj, (duk_heaphdr *) key,
- (duk_heaphdr *) getter, (duk_heaphdr *) setter,
- (unsigned long) propflags));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- DUK_ASSERT((propflags & ~DUK_PROPDESC_FLAGS_MASK) == 0);
- /* setter and/or getter may be NULL */
- DUK_ASSERT(!DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj));
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /* force the property to 'undefined' to create a slot for it */
- duk_push_undefined(ctx);
- duk_hobject_define_property_internal(thr, obj, key, propflags);
- duk_hobject_find_existing_entry(thr->heap, obj, key, &e_idx, &h_idx);
- DUK_DDD(DUK_DDDPRINT("accessor slot: e_idx=%ld, h_idx=%ld", (long) e_idx, (long) h_idx));
- DUK_ASSERT(e_idx >= 0);
- DUK_ASSERT((duk_uint32_t) e_idx < DUK_HOBJECT_GET_ENEXT(obj));
-
- /* no need to decref, as previous value is 'undefined' */
- DUK_HOBJECT_E_SLOT_SET_ACCESSOR(thr->heap, obj, e_idx);
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, e_idx, getter);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, e_idx, setter);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, getter);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, setter);
-}
-
-/*
- * Internal helpers for managing object 'length'
- */
-
-/* XXX: awkward helpers */
-
-DUK_INTERNAL void duk_hobject_set_length(duk_hthread *thr, duk_hobject *obj, duk_uint32_t length) {
- duk_context *ctx = (duk_context *) thr;
- duk_push_hobject(ctx, obj);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LENGTH);
- duk_push_u32(ctx, length);
- (void) duk_hobject_putprop(thr,
- DUK_GET_TVAL_NEGIDX(ctx, -3),
- DUK_GET_TVAL_NEGIDX(ctx, -2),
- DUK_GET_TVAL_NEGIDX(ctx, -1),
- 0);
- duk_pop_n(ctx, 3);
-}
-
-DUK_INTERNAL void duk_hobject_set_length_zero(duk_hthread *thr, duk_hobject *obj) {
- duk_hobject_set_length(thr, obj, 0);
-}
-
-DUK_INTERNAL duk_uint32_t duk_hobject_get_length(duk_hthread *thr, duk_hobject *obj) {
- duk_context *ctx = (duk_context *) thr;
- duk_double_t val;
- duk_push_hobject(ctx, obj);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LENGTH);
- (void) duk_hobject_getprop(thr,
- DUK_GET_TVAL_NEGIDX(ctx, -2),
- DUK_GET_TVAL_NEGIDX(ctx, -1));
- val = duk_to_number(ctx, -1);
- duk_pop_n(ctx, 3);
- if (val >= 0.0 && val < DUK_DOUBLE_2TO32) {
- return (duk_uint32_t) val;
- }
- return 0;
-}
-
-/*
- * Object.getOwnPropertyDescriptor() (E5 Sections 15.2.3.3, 8.10.4)
- *
- * This is an actual function call.
- */
-
-DUK_INTERNAL duk_ret_t duk_hobject_object_get_own_property_descriptor(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hobject *obj;
- duk_hstring *key;
- duk_propdesc pd;
- duk_bool_t rc;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
- obj = duk_require_hobject_or_lfunc_coerce(ctx, 0);
- (void) duk_to_string(ctx, 1);
- key = duk_require_hstring(ctx, 1);
-
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- rc = duk_hobject_get_own_propdesc(thr, obj, key, &pd, DUK_GETDESC_FLAG_PUSH_VALUE);
- if (!rc) {
- duk_push_undefined(ctx);
-
- /* [obj key undefined] */
- return 1;
- }
-
- duk_push_object(ctx);
-
- /* [obj key value desc] */
-
- if (DUK_PROPDESC_IS_ACCESSOR(&pd)) {
- /* If a setter/getter is missing (undefined), the descriptor must
- * still have the property present with the value 'undefined'.
- */
- if (pd.get) {
- duk_push_hobject(ctx, pd.get);
- } else {
- duk_push_undefined(ctx);
- }
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_GET);
- if (pd.set) {
- duk_push_hobject(ctx, pd.set);
- } else {
- duk_push_undefined(ctx);
- }
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_SET);
- } else {
- duk_dup(ctx, -2); /* [obj key value desc value] */
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_VALUE);
- duk_push_boolean(ctx, DUK_PROPDESC_IS_WRITABLE(&pd));
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_WRITABLE);
-
- /* [obj key value desc] */
- }
- duk_push_boolean(ctx, DUK_PROPDESC_IS_ENUMERABLE(&pd));
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_ENUMERABLE);
- duk_push_boolean(ctx, DUK_PROPDESC_IS_CONFIGURABLE(&pd));
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_CONFIGURABLE);
-
- /* [obj key value desc] */
- return 1;
-}
-
-/*
- * NormalizePropertyDescriptor() related helper.
- *
- * Internal helper which validates and normalizes a property descriptor
- * represented as an Ecmascript object (e.g. argument to defineProperty()).
- * The output of this conversion is a set of defprop_flags and possibly
- * some values pushed on the value stack; some subset of: property value,
- * getter, setter. Caller must manage stack top carefully because the
- * number of values pushed depends on the input property descriptor.
- *
- * The original descriptor object must not be altered in the process.
- */
-
-/* XXX: very basic optimization -> duk_get_prop_stridx_top */
-
-DUK_INTERNAL
-void duk_hobject_prepare_property_descriptor(duk_context *ctx,
- duk_idx_t idx_in,
- duk_uint_t *out_defprop_flags,
- duk_idx_t *out_idx_value,
- duk_hobject **out_getter,
- duk_hobject **out_setter) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_idx_t idx_value = -1;
- duk_hobject *getter = NULL;
- duk_hobject *setter = NULL;
- duk_bool_t is_data_desc = 0;
- duk_bool_t is_acc_desc = 0;
- duk_uint_t defprop_flags = 0;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(out_defprop_flags != NULL);
- DUK_ASSERT(out_idx_value != NULL);
- DUK_ASSERT(out_getter != NULL);
- DUK_ASSERT(out_setter != NULL);
-
- /* Must be an object, otherwise TypeError (E5.1 Section 8.10.5, step 1). */
- idx_in = duk_require_normalize_index(ctx, idx_in);
- (void) duk_require_hobject(ctx, idx_in);
-
- /* The coercion order must match the ToPropertyDescriptor() algorithm
- * so that side effects in coercion happen in the correct order.
- * (This order also happens to be compatible with duk_def_prop(),
- * although it doesn't matter in practice.)
- */
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_VALUE)) {
- is_data_desc = 1;
- defprop_flags |= DUK_DEFPROP_HAVE_VALUE;
- idx_value = duk_get_top_index(ctx);
- /* Leave 'value' on stack */
- } else {
- duk_pop(ctx);
- }
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_WRITABLE)) {
- is_data_desc = 1;
- if (duk_to_boolean(ctx, -1)) {
- defprop_flags |= DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE;
- } else {
- defprop_flags |= DUK_DEFPROP_HAVE_WRITABLE;
- }
- }
- duk_pop(ctx);
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_GET)) {
- duk_tval *tv = duk_require_tval(ctx, -1);
- duk_hobject *h_get;
-
- if (DUK_TVAL_IS_UNDEFINED(tv)) {
- /* undefined is accepted */
- DUK_ASSERT(getter == NULL);
- } else {
- /* NOTE: lightfuncs are coerced to full functions because
- * lightfuncs don't fit into a property value slot. This
- * has some side effects, see test-dev-lightfunc-accessor.js.
- */
- h_get = duk_get_hobject_or_lfunc_coerce(ctx, -1);
- if (h_get == NULL || !DUK_HOBJECT_IS_CALLABLE(h_get)) {
- goto type_error;
- }
- getter = h_get;
- }
- is_acc_desc = 1;
- defprop_flags |= DUK_DEFPROP_HAVE_GETTER;
- /* Leave 'getter' on stack */
- } else {
- duk_pop(ctx);
- }
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_SET)) {
- duk_tval *tv = duk_require_tval(ctx, -1);
- duk_hobject *h_set;
-
- if (DUK_TVAL_IS_UNDEFINED(tv)) {
- /* undefined is accepted */
- DUK_ASSERT(setter == NULL);
- } else {
- /* NOTE: lightfuncs are coerced to full functions because
- * lightfuncs don't fit into a property value slot. This
- * has some side effects, see test-dev-lightfunc-accessor.js.
- */
- h_set = duk_get_hobject_or_lfunc_coerce(ctx, -1);
- if (h_set == NULL || !DUK_HOBJECT_IS_CALLABLE(h_set)) {
- goto type_error;
- }
- setter = h_set;
- }
- is_acc_desc = 1;
- defprop_flags |= DUK_DEFPROP_HAVE_SETTER;
- /* Leave 'setter' on stack */
- } else {
- duk_pop(ctx);
- }
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_ENUMERABLE)) {
- if (duk_to_boolean(ctx, -1)) {
- defprop_flags |= DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_ENUMERABLE;
- } else {
- defprop_flags |= DUK_DEFPROP_HAVE_ENUMERABLE;
- }
- }
- duk_pop(ctx);
-
- if (duk_get_prop_stridx(ctx, idx_in, DUK_STRIDX_CONFIGURABLE)) {
- if (duk_to_boolean(ctx, -1)) {
- defprop_flags |= DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE;
- } else {
- defprop_flags |= DUK_DEFPROP_HAVE_CONFIGURABLE;
- }
- }
- duk_pop(ctx);
-
- if (is_data_desc && is_acc_desc) {
- goto type_error;
- }
-
- *out_defprop_flags = defprop_flags;
- *out_idx_value = idx_value;
- *out_getter = getter;
- *out_setter = setter;
-
- /* [ ... value? getter? setter? ] */
- return;
-
- type_error:
- DUK_ERROR_TYPE(thr, DUK_STR_INVALID_DESCRIPTOR);
-}
-
-/*
- * Object.defineProperty() related helper (E5 Section 15.2.3.6)
- *
- * Inlines all [[DefineOwnProperty]] exotic behaviors.
- *
- * Note: Ecmascript compliant [[DefineOwnProperty]](P, Desc, Throw) is not
- * implemented directly, but Object.defineProperty() serves its purpose.
- * We don't need the [[DefineOwnProperty]] internally and we don't have a
- * property descriptor with 'missing values' so it's easier to avoid it
- * entirely.
- *
- * Note: this is only called for actual objects, not primitive values.
- * This must support virtual properties for full objects (e.g. Strings)
- * but not for plain values (e.g. strings). Lightfuncs, even though
- * primitive in a sense, are treated like objects and accepted as target
- * values.
- */
-
-/* XXX: this is a major target for size optimization */
-DUK_INTERNAL
-void duk_hobject_define_property_helper(duk_context *ctx,
- duk_uint_t defprop_flags,
- duk_hobject *obj,
- duk_hstring *key,
- duk_idx_t idx_value,
- duk_hobject *get,
- duk_hobject *set) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_uint32_t arr_idx;
- duk_tval tv;
- duk_bool_t has_enumerable;
- duk_bool_t has_configurable;
- duk_bool_t has_writable;
- duk_bool_t has_value;
- duk_bool_t has_get;
- duk_bool_t has_set;
- duk_bool_t is_enumerable;
- duk_bool_t is_configurable;
- duk_bool_t is_writable;
- duk_bool_t throw_flag;
- duk_bool_t force_flag;
- duk_small_uint_t new_flags;
- duk_propdesc curr;
- duk_uint32_t arridx_new_array_length; /* != 0 => post-update for array 'length' (used when key is an array index) */
- duk_uint32_t arrlen_old_len;
- duk_uint32_t arrlen_new_len;
- duk_bool_t pending_write_protect;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(obj != NULL);
- DUK_ASSERT(key != NULL);
- /* idx_value may be < 0 (no value), set and get may be NULL */
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
- /* All the flags fit in 16 bits, so will fit into duk_bool_t. */
-
- has_writable = (defprop_flags & DUK_DEFPROP_HAVE_WRITABLE);
- has_enumerable = (defprop_flags & DUK_DEFPROP_HAVE_ENUMERABLE);
- has_configurable = (defprop_flags & DUK_DEFPROP_HAVE_CONFIGURABLE);
- has_value = (defprop_flags & DUK_DEFPROP_HAVE_VALUE);
- has_get = (defprop_flags & DUK_DEFPROP_HAVE_GETTER);
- has_set = (defprop_flags & DUK_DEFPROP_HAVE_SETTER);
- is_writable = (defprop_flags & DUK_DEFPROP_WRITABLE);
- is_enumerable = (defprop_flags & DUK_DEFPROP_ENUMERABLE);
- is_configurable = (defprop_flags & DUK_DEFPROP_CONFIGURABLE);
- throw_flag = 1; /* Object.defineProperty() calls [[DefineOwnProperty]] with Throw=true */
- force_flag = (defprop_flags & DUK_DEFPROP_FORCE);
-
- arr_idx = DUK_HSTRING_GET_ARRIDX_SLOW(key);
-
- arridx_new_array_length = 0;
- pending_write_protect = 0;
- arrlen_old_len = 0;
- arrlen_new_len = 0;
-
- DUK_DDD(DUK_DDDPRINT("has_enumerable=%ld is_enumerable=%ld "
- "has_configurable=%ld is_configurable=%ld "
- "has_writable=%ld is_writable=%ld "
- "has_value=%ld value=%!T "
- "has_get=%ld get=%p=%!O "
- "has_set=%ld set=%p=%!O "
- "arr_idx=%ld",
- (long) has_enumerable, (long) is_enumerable,
- (long) has_configurable, (long) is_configurable,
- (long) has_writable, (long) is_writable,
- (long) has_value, (duk_tval *) (idx_value >= 0 ? duk_get_tval(ctx, idx_value) : NULL),
- (long) has_get, (void *) get, (duk_heaphdr *) get,
- (long) has_set, (void *) set, (duk_heaphdr *) set,
- (long) arr_idx));
-
- /*
- * Array exotic behaviors can be implemented at this point. The local variables
- * are essentially a 'value copy' of the input descriptor (Desc), which is modified
- * by the Array [[DefineOwnProperty]] (E5 Section 15.4.5.1).
- */
-
- if (!DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) {
- goto skip_array_exotic;
- }
-
- if (key == DUK_HTHREAD_STRING_LENGTH(thr)) {
- /* E5 Section 15.4.5.1, step 3, steps a - i are implemented here, j - n at the end */
- if (!has_value) {
- DUK_DDD(DUK_DDDPRINT("exotic array behavior for 'length', but no value in descriptor -> normal behavior"));
- goto skip_array_exotic;
- }
-
- DUK_DDD(DUK_DDDPRINT("exotic array behavior for 'length', value present in descriptor -> exotic behavior"));
-
- /*
- * Get old and new length
- */
-
- /* Note: reuse 'curr' as a temp propdesc */
- arrlen_old_len = duk__get_old_array_length(thr, obj, &curr);
-
- duk_dup(ctx, idx_value);
- arrlen_new_len = duk__to_new_array_length_checked(thr);
- duk_push_u32(ctx, arrlen_new_len);
- duk_replace(ctx, idx_value); /* step 3.e: replace 'Desc.[[Value]]' */
-
- DUK_DDD(DUK_DDDPRINT("old_len=%ld, new_len=%ld", (long) arrlen_old_len, (long) arrlen_new_len));
-
- if (arrlen_new_len >= arrlen_old_len) {
- /* standard behavior, step 3.f.i */
- DUK_DDD(DUK_DDDPRINT("new length is same or higher as previous => standard behavior"));
- goto skip_array_exotic;
- }
- DUK_DDD(DUK_DDDPRINT("new length is smaller than previous => exotic post behavior"));
-
- /* XXX: consolidated algorithm step 15.f -> redundant? */
- if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE) && !force_flag) {
- /* Note: 'curr' refers to 'length' propdesc */
- goto fail_not_writable_array_length;
- }
-
- /* steps 3.h and 3.i */
- if (has_writable && !is_writable) {
- DUK_DDD(DUK_DDDPRINT("desc writable is false, force it back to true, and flag pending write protect"));
- is_writable = 1;
- pending_write_protect = 1;
- }
-
- /* remaining actual steps are carried out if standard DefineOwnProperty succeeds */
- } else if (arr_idx != DUK__NO_ARRAY_INDEX) {
- /* XXX: any chance of unifying this with the 'length' key handling? */
-
- /* E5 Section 15.4.5.1, step 4 */
- duk_uint32_t old_len;
-
- /* Note: use 'curr' as a temp propdesc */
- old_len = duk__get_old_array_length(thr, obj, &curr);
-
- if (arr_idx >= old_len) {
- DUK_DDD(DUK_DDDPRINT("defineProperty requires array length update "
- "(arr_idx=%ld, old_len=%ld)",
- (long) arr_idx, (long) old_len));
-
- if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- /* Note: 'curr' refers to 'length' propdesc */
- goto fail_not_writable_array_length;
- }
-
- /* actual update happens once write has been completed without
- * error below.
- */
- DUK_ASSERT(arr_idx != 0xffffffffUL);
- arridx_new_array_length = arr_idx + 1;
- } else {
- DUK_DDD(DUK_DDDPRINT("defineProperty does not require length update "
- "(arr_idx=%ld, old_len=%ld) -> standard behavior",
- (long) arr_idx, (long) old_len));
- }
- }
- skip_array_exotic:
-
- /* XXX: There is currently no support for writing buffer object
- * indexed elements here. Attempt to do so will succeed and
- * write a concrete property into the buffer object. This should
- * be fixed at some point but because buffers are a custom feature
- * anyway, this is relatively unimportant.
- */
-
- /*
- * Actual Object.defineProperty() default algorithm.
- */
-
- /*
- * First check whether property exists; if not, simple case. This covers
- * steps 1-4.
- */
-
- if (!duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE)) {
- DUK_DDD(DUK_DDDPRINT("property does not exist"));
-
- if (!DUK_HOBJECT_HAS_EXTENSIBLE(obj) && !force_flag) {
- goto fail_not_extensible;
- }
-
- /* XXX: share final setting code for value and flags? difficult because
- * refcount code is different. Share entry allocation? But can't allocate
- * until array index checked.
- */
-
- /* steps 4.a and 4.b are tricky */
- if (has_set || has_get) {
- duk_int_t e_idx;
-
- DUK_DDD(DUK_DDDPRINT("create new accessor property"));
-
- DUK_ASSERT(has_set || set == NULL);
- DUK_ASSERT(has_get || get == NULL);
- DUK_ASSERT(!has_value);
- DUK_ASSERT(!has_writable);
-
- new_flags = DUK_PROPDESC_FLAG_ACCESSOR; /* defaults, E5 Section 8.6.1, Table 7 */
- if (has_enumerable && is_enumerable) {
- new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE;
- }
- if (has_configurable && is_configurable) {
- new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- DUK_DDD(DUK_DDDPRINT("accessor cannot go to array part, abandon array"));
- duk__abandon_array_checked(thr, obj);
- }
-
- /* write to entry part */
- e_idx = duk__alloc_entry_checked(thr, obj, key);
- DUK_ASSERT(e_idx >= 0);
-
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, e_idx, get);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, e_idx, set);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, get);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, set);
-
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, new_flags);
- goto success_exotics;
- } else {
- duk_int_t e_idx;
- duk_tval *tv2;
-
- DUK_DDD(DUK_DDDPRINT("create new data property"));
-
- DUK_ASSERT(!has_set);
- DUK_ASSERT(!has_get);
-
- new_flags = 0; /* defaults, E5 Section 8.6.1, Table 7 */
- if (has_writable && is_writable) {
- new_flags |= DUK_PROPDESC_FLAG_WRITABLE;
- }
- if (has_enumerable && is_enumerable) {
- new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE;
- }
- if (has_configurable && is_configurable) {
- new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
- if (has_value) {
- duk_tval *tv_tmp = duk_require_tval(ctx, idx_value);
- DUK_TVAL_SET_TVAL(&tv, tv_tmp);
- } else {
- DUK_TVAL_SET_UNDEFINED(&tv); /* default value */
- }
-
- if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_ARRAY_PART(obj)) {
- if (new_flags == DUK_PROPDESC_FLAGS_WEC) {
-#if 0
- DUK_DDD(DUK_DDDPRINT("new data property attributes match array defaults, attempt to write to array part"));
- /* may become sparse...*/
-#endif
- /* XXX: handling for array part missing now; this doesn't affect
- * compliance but causes array entry writes using defineProperty()
- * to always abandon array part.
- */
- }
- DUK_DDD(DUK_DDDPRINT("new data property cannot go to array part, abandon array"));
- duk__abandon_array_checked(thr, obj);
- /* fall through */
- }
-
- /* write to entry part */
- e_idx = duk__alloc_entry_checked(thr, obj, key);
- DUK_ASSERT(e_idx >= 0);
- tv2 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, e_idx);
- DUK_TVAL_SET_TVAL(tv2, &tv);
- DUK_TVAL_INCREF(thr, tv2);
-
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, e_idx, new_flags);
- goto success_exotics;
- }
- DUK_UNREACHABLE();
- }
-
- /* we currently assume virtual properties are not configurable (as none of them are) */
- DUK_ASSERT((curr.e_idx >= 0 || curr.a_idx >= 0) || !(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE));
-
- /* [obj key desc value get set curr_value] */
-
- /*
- * Property already exists. Steps 5-6 detect whether any changes need
- * to be made.
- */
-
- if (has_enumerable) {
- if (is_enumerable) {
- if (!(curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE)) {
- goto need_check;
- }
- } else {
- if (curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE) {
- goto need_check;
- }
- }
- }
- if (has_configurable) {
- if (is_configurable) {
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE)) {
- goto need_check;
- }
- } else {
- if (curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) {
- goto need_check;
- }
- }
- }
- if (has_value) {
- duk_tval *tmp1;
- duk_tval *tmp2;
-
- /* attempt to change from accessor to data property */
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- goto need_check;
- }
-
- tmp1 = duk_require_tval(ctx, -1); /* curr value */
- tmp2 = duk_require_tval(ctx, idx_value); /* new value */
- if (!duk_js_samevalue(tmp1, tmp2)) {
- goto need_check;
- }
- }
- if (has_writable) {
- /* attempt to change from accessor to data property */
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- goto need_check;
- }
-
- if (is_writable) {
- if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- goto need_check;
- }
- } else {
- if (curr.flags & DUK_PROPDESC_FLAG_WRITABLE) {
- goto need_check;
- }
- }
- }
- if (has_set) {
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- if (set != curr.set) {
- goto need_check;
- }
- } else {
- goto need_check;
- }
- }
- if (has_get) {
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- if (get != curr.get) {
- goto need_check;
- }
- } else {
- goto need_check;
- }
- }
-
- /* property exists, either 'desc' is empty, or all values
- * match (SameValue)
- */
- goto success_no_exotics;
-
- need_check:
-
- /*
- * Some change(s) need to be made. Steps 7-11.
- */
-
- /* shared checks for all descriptor types */
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) {
- if (has_configurable && is_configurable) {
- goto fail_not_configurable;
- }
- if (has_enumerable) {
- if (curr.flags & DUK_PROPDESC_FLAG_ENUMERABLE) {
- if (!is_enumerable) {
- goto fail_not_configurable;
- }
- } else {
- if (is_enumerable) {
- goto fail_not_configurable;
- }
- }
- }
- }
-
- /* Reject attempt to change virtual properties: not part of the
- * standard algorithm, applies currently to e.g. virtual index
- * properties of buffer objects (which are virtual but writable).
- * (Cannot "force" modification of a virtual property.)
- */
- if (curr.flags & DUK_PROPDESC_FLAG_VIRTUAL) {
- goto fail_virtual;
- }
-
- /* Reject attempt to change a read-only object. */
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) {
- DUK_DD(DUK_DDPRINT("attempt to define property on read-only target object"));
- goto fail_not_configurable;
- }
-#endif
-
- /* descriptor type specific checks */
- if (has_set || has_get) {
- /* IsAccessorDescriptor(desc) == true */
- DUK_ASSERT(!has_writable);
- DUK_ASSERT(!has_value);
-
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- /* curr and desc are accessors */
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) {
- if (has_set && set != curr.set) {
- goto fail_not_configurable;
- }
- if (has_get && get != curr.get) {
- goto fail_not_configurable;
- }
- }
- } else {
- duk_bool_t rc;
- duk_tval *tv1;
-
- /* curr is data, desc is accessor */
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) {
- goto fail_not_configurable;
- }
-
- DUK_DDD(DUK_DDDPRINT("convert property to accessor property"));
- if (curr.a_idx >= 0) {
- DUK_DDD(DUK_DDDPRINT("property to convert is stored in an array entry, abandon array and re-lookup"));
- duk__abandon_array_checked(thr, obj);
- duk_pop(ctx); /* remove old value */
- rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0);
- }
-
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
-
- tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- /* XXX: just decref */
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
-
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx);
- DUK_HOBJECT_E_SLOT_SET_ACCESSOR(thr->heap, obj, curr.e_idx);
-
- DUK_DDD(DUK_DDDPRINT("flags after data->accessor conversion: 0x%02lx",
- (unsigned long) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, curr.e_idx)));
-
- /* re-lookup to update curr.flags
- * XXX: would be faster to update directly
- */
- duk_pop(ctx); /* remove old value */
- rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- }
- } else if (has_value || has_writable) {
- /* IsDataDescriptor(desc) == true */
- DUK_ASSERT(!has_set);
- DUK_ASSERT(!has_get);
-
- if (curr.flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- duk_bool_t rc;
- duk_hobject *tmp;
-
- /* curr is accessor, desc is data */
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) {
- goto fail_not_configurable;
- }
-
- /* curr is accessor -> cannot be in array part */
- DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0);
-
- DUK_DDD(DUK_DDDPRINT("convert property to data property"));
-
- DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
- tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx);
- DUK_UNREF(tmp);
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
- tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx);
- DUK_UNREF(tmp);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
-
- DUK_TVAL_SET_UNDEFINED(DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx));
- DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx);
- DUK_HOBJECT_E_SLOT_CLEAR_ACCESSOR(thr->heap, obj, curr.e_idx);
-
- DUK_DDD(DUK_DDDPRINT("flags after accessor->data conversion: 0x%02lx",
- (unsigned long) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, curr.e_idx)));
-
- /* re-lookup to update curr.flags
- * XXX: would be faster to update directly
- */
- duk_pop(ctx); /* remove old value */
- rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- } else {
- /* curr and desc are data */
- if (!(curr.flags & DUK_PROPDESC_FLAG_CONFIGURABLE) && !force_flag) {
- if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE) && has_writable && is_writable) {
- goto fail_not_configurable;
- }
- /* Note: changing from writable to non-writable is OK */
- if (!(curr.flags & DUK_PROPDESC_FLAG_WRITABLE) && has_value) {
- duk_tval *tmp1 = duk_require_tval(ctx, -1); /* curr value */
- duk_tval *tmp2 = duk_require_tval(ctx, idx_value); /* new value */
- if (!duk_js_samevalue(tmp1, tmp2)) {
- goto fail_not_configurable;
- }
- }
- }
- }
- } else {
- /* IsGenericDescriptor(desc) == true; this means in practice that 'desc'
- * only has [[Enumerable]] or [[Configurable]] flag updates, which are
- * allowed at this point.
- */
-
- DUK_ASSERT(!has_value && !has_writable && !has_get && !has_set);
- }
-
- /*
- * Start doing property attributes updates. Steps 12-13.
- *
- * Start by computing new attribute flags without writing yet.
- * Property type conversion is done above if necessary.
- */
-
- new_flags = curr.flags;
-
- if (has_enumerable) {
- if (is_enumerable) {
- new_flags |= DUK_PROPDESC_FLAG_ENUMERABLE;
- } else {
- new_flags &= ~DUK_PROPDESC_FLAG_ENUMERABLE;
- }
- }
- if (has_configurable) {
- if (is_configurable) {
- new_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE;
- } else {
- new_flags &= ~DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
- }
- if (has_writable) {
- if (is_writable) {
- new_flags |= DUK_PROPDESC_FLAG_WRITABLE;
- } else {
- new_flags &= ~DUK_PROPDESC_FLAG_WRITABLE;
- }
- }
-
- /* XXX: write protect after flag? -> any chance of handling it here? */
-
- DUK_DDD(DUK_DDDPRINT("new flags that we want to write: 0x%02lx",
- (unsigned long) new_flags));
-
- /*
- * Check whether we need to abandon an array part (if it exists)
- */
-
- if (curr.a_idx >= 0) {
- duk_bool_t rc;
-
- DUK_ASSERT(curr.e_idx < 0);
-
- if (new_flags == DUK_PROPDESC_FLAGS_WEC) {
- duk_tval *tv1, *tv2;
-
- DUK_DDD(DUK_DDDPRINT("array index, new property attributes match array defaults, update in-place"));
-
- DUK_ASSERT(curr.flags == DUK_PROPDESC_FLAGS_WEC); /* must have been, since in array part */
- DUK_ASSERT(!has_set);
- DUK_ASSERT(!has_get);
-
- tv2 = duk_require_tval(ctx, idx_value);
- tv1 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, curr.a_idx);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
- goto success_exotics;
- }
-
- DUK_DDD(DUK_DDDPRINT("array index, new property attributes do not match array defaults, abandon array and re-lookup"));
- duk__abandon_array_checked(thr, obj);
- duk_pop(ctx); /* remove old value */
- rc = duk__get_own_propdesc_raw(thr, obj, key, arr_idx, &curr, DUK_GETDESC_FLAG_PUSH_VALUE);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0);
- }
-
- DUK_DDD(DUK_DDDPRINT("updating existing property in entry part"));
-
- /* array case is handled comprehensively above */
- DUK_ASSERT(curr.e_idx >= 0 && curr.a_idx < 0);
-
- DUK_DDD(DUK_DDDPRINT("update existing property attributes"));
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, obj, curr.e_idx, new_flags);
-
- if (has_set) {
- duk_hobject *tmp;
-
- DUK_DDD(DUK_DDDPRINT("update existing property setter"));
- DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
-
- tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, obj, curr.e_idx);
- DUK_UNREF(tmp);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, obj, curr.e_idx, set);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, set);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
- }
- if (has_get) {
- duk_hobject *tmp;
-
- DUK_DDD(DUK_DDDPRINT("update existing property getter"));
- DUK_ASSERT(DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
-
- tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, obj, curr.e_idx);
- DUK_UNREF(tmp);
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, obj, curr.e_idx, get);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, get);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp); /* side effects */
- }
- if (has_value) {
- duk_tval *tv1, *tv2;
-
- DUK_DDD(DUK_DDDPRINT("update existing property value"));
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
-
- tv2 = duk_require_tval(ctx, idx_value);
- tv1 = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
- }
-
- /*
- * Standard algorithm succeeded without errors, check for exotic post-behaviors.
- *
- * Arguments exotic behavior in E5 Section 10.6 occurs after the standard
- * [[DefineOwnProperty]] has completed successfully.
- *
- * Array exotic behavior in E5 Section 15.4.5.1 is implemented partly
- * prior to the default [[DefineOwnProperty]], but:
- * - for an array index key (e.g. "10") the final 'length' update occurs here
- * - for 'length' key the element deletion and 'length' update occurs here
- */
-
- success_exotics:
-
- /* [obj key desc value get set curr_value] */
-
- if (DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)) {
- if (arridx_new_array_length > 0) {
- duk_tval *tmp;
- duk_bool_t rc;
-
- /*
- * Note: zero works as a "no update" marker because the new length
- * can never be zero after a new property is written.
- */
-
- /* E5 Section 15.4.5.1, steps 4.e.i - 4.e.ii */
-
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, pending array length update to: %ld",
- (long) arridx_new_array_length));
-
- /* Note: reuse 'curr' */
- rc = duk__get_own_propdesc_raw(thr, obj, DUK_HTHREAD_STRING_LENGTH(thr), DUK__NO_ARRAY_INDEX, &curr, 0 /*flags*/); /* don't push value */
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- DUK_ASSERT(curr.e_idx >= 0);
-
- tmp = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tmp));
- /* no need for decref/incref because value is a number */
- DUK_TVAL_SET_FASTINT_U32(tmp, arridx_new_array_length);
- }
- if (key == DUK_HTHREAD_STRING_LENGTH(thr) && arrlen_new_len < arrlen_old_len) {
- /*
- * E5 Section 15.4.5.1, steps 3.k - 3.n. The order at the end combines
- * the error case 3.l.iii and the success case 3.m-3.n.
- *
- * Note: 'length' is always in entries part, so no array abandon issues for
- * 'writable' update.
- */
-
- /* XXX: investigate whether write protect can be handled above, if we
- * just update length here while ignoring its protected status
- */
-
- duk_tval *tmp;
- duk_uint32_t result_len;
- duk_bool_t rc;
-
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, key is 'length', exotic array behavior, "
- "doing array element deletion and length update"));
-
- rc = duk__handle_put_array_length_smaller(thr, obj, arrlen_old_len, arrlen_new_len, force_flag, &result_len);
-
- /* update length (curr points to length, and we assume it's still valid) */
- DUK_ASSERT(result_len >= arrlen_new_len && result_len <= arrlen_old_len);
-
- DUK_ASSERT(curr.e_idx >= 0);
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, obj, curr.e_idx));
- tmp = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, obj, curr.e_idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tmp));
- /* no decref needed for a number */
- DUK_TVAL_SET_FASTINT_U32(tmp, result_len);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tmp));
-
- if (pending_write_protect) {
- DUK_DDD(DUK_DDDPRINT("setting array length non-writable (pending writability update)"));
- DUK_HOBJECT_E_SLOT_CLEAR_WRITABLE(thr->heap, obj, curr.e_idx);
- }
-
- /*
- * XXX: shrink array allocation or entries compaction here?
- */
-
- if (!rc) {
- goto fail_array_length_partial;
- }
- }
- } else if (arr_idx != DUK__NO_ARRAY_INDEX && DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(obj)) {
- duk_hobject *map;
- duk_hobject *varenv;
-
- DUK_ASSERT(arridx_new_array_length == 0);
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(obj)); /* traits are separate; in particular, arguments not an array */
-
- map = NULL;
- varenv = NULL;
- if (!duk__lookup_arguments_map(thr, obj, key, &curr, &map, &varenv)) {
- goto success_no_exotics;
- }
- DUK_ASSERT(map != NULL);
- DUK_ASSERT(varenv != NULL);
-
- /* [obj key desc value get set curr_value varname] */
-
- if (has_set || has_get) {
- /* = IsAccessorDescriptor(Desc) */
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map' "
- "changed to an accessor, delete arguments binding"));
-
- (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */
- } else {
- /* Note: this order matters (final value before deleting map entry must be done) */
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', "
- "check for value update / binding deletion"));
-
- if (has_value) {
- duk_hstring *varname;
-
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', "
- "update bound value (variable/argument)"));
-
- varname = duk_require_hstring(ctx, -1);
- DUK_ASSERT(varname != NULL);
-
- DUK_DDD(DUK_DDDPRINT("arguments object automatic putvar for a bound variable; "
- "key=%!O, varname=%!O, value=%!T",
- (duk_heaphdr *) key,
- (duk_heaphdr *) varname,
- (duk_tval *) duk_require_tval(ctx, idx_value)));
-
- /* strict flag for putvar comes from our caller (currently: fixed) */
- duk_js_putvar_envrec(thr, varenv, varname, duk_require_tval(ctx, idx_value), throw_flag);
- }
- if (has_writable && !is_writable) {
- DUK_DDD(DUK_DDDPRINT("defineProperty successful, key mapped to arguments 'map', "
- "changed to non-writable, delete arguments binding"));
-
- (void) duk_hobject_delprop_raw(thr, map, key, 0); /* ignore result */
- }
- }
-
- /* 'varname' is in stack in this else branch, leaving an unbalanced stack below,
- * but this doesn't matter now.
- */
- }
-
- success_no_exotics:
- return;
-
- fail_virtual:
- DUK_ERROR_TYPE(thr, DUK_STR_PROPERTY_IS_VIRTUAL);
- return;
-
- fail_not_writable_array_length:
- DUK_ERROR_TYPE(thr, DUK_STR_ARRAY_LENGTH_NOT_WRITABLE);
- return;
-
- fail_not_extensible:
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_EXTENSIBLE);
- return;
-
- fail_not_configurable:
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE);
- return;
-
- fail_array_length_partial:
- DUK_ERROR_TYPE(thr, DUK_STR_ARRAY_LENGTH_WRITE_FAILED);
- return;
-}
-
-/*
- * Object.prototype.hasOwnProperty() and Object.prototype.propertyIsEnumerable().
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_object_ownprop_helper(duk_context *ctx, duk_small_uint_t required_desc_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_v;
- duk_hobject *h_obj;
- duk_propdesc desc;
- duk_bool_t ret;
-
- /* coercion order matters */
- h_v = duk_to_hstring(ctx, 0);
- DUK_ASSERT(h_v != NULL);
-
- h_obj = duk_push_this_coercible_to_object(ctx);
- DUK_ASSERT(h_obj != NULL);
-
- ret = duk_hobject_get_own_propdesc(thr, h_obj, h_v, &desc, 0 /*flags*/); /* don't push value */
-
- duk_push_boolean(ctx, ret && ((desc.flags & required_desc_flags) == required_desc_flags));
- return 1;
-}
-
-/*
- * Object.seal() and Object.freeze() (E5 Sections 15.2.3.8 and 15.2.3.9)
- *
- * Since the algorithms are similar, a helper provides both functions.
- * Freezing is essentially sealing + making plain properties non-writable.
- *
- * Note: virtual (non-concrete) properties which are non-configurable but
- * writable would pose some problems, but such properties do not currently
- * exist (all virtual properties are non-configurable and non-writable).
- * If they did exist, the non-configurability does NOT prevent them from
- * becoming non-writable. However, this change should be recorded somehow
- * so that it would turn up (e.g. when getting the property descriptor),
- * requiring some additional flags in the object.
- */
-
-DUK_INTERNAL void duk_hobject_object_seal_freeze_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_freeze) {
- duk_uint_fast32_t i;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(obj != NULL);
-
- DUK_ASSERT_VALSTACK_SPACE(thr, DUK__VALSTACK_SPACE);
-
-#if defined(DUK_USE_ROM_OBJECTS)
- if (DUK_HEAPHDR_HAS_READONLY((duk_heaphdr *) obj)) {
- DUK_DD(DUK_DDPRINT("attempt to seal/freeze a readonly object, reject"));
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CONFIGURABLE);
- }
-#endif
-
- /*
- * Abandon array part because all properties must become non-configurable.
- * Note that this is now done regardless of whether this is always the case
- * (skips check, but performance problem if caller would do this many times
- * for the same object; not likely).
- */
-
- duk__abandon_array_checked(thr, obj);
- DUK_ASSERT(DUK_HOBJECT_GET_ASIZE(obj) == 0);
-
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- duk_uint8_t *fp;
-
- /* since duk__abandon_array_checked() causes a resize, there should be no gaps in keys */
- DUK_ASSERT(DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i) != NULL);
-
- /* avoid multiple computations of flags address; bypasses macros */
- fp = DUK_HOBJECT_E_GET_FLAGS_PTR(thr->heap, obj, i);
- if (is_freeze && !((*fp) & DUK_PROPDESC_FLAG_ACCESSOR)) {
- *fp &= ~(DUK_PROPDESC_FLAG_WRITABLE | DUK_PROPDESC_FLAG_CONFIGURABLE);
- } else {
- *fp &= ~DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
- }
-
- DUK_HOBJECT_CLEAR_EXTENSIBLE(obj);
-
- /* no need to compact since we already did that in duk__abandon_array_checked()
- * (regardless of whether an array part existed or not.
- */
-
- return;
-}
-
-/*
- * Object.isSealed() and Object.isFrozen() (E5 Sections 15.2.3.11, 15.2.3.13)
- *
- * Since the algorithms are similar, a helper provides both functions.
- * Freezing is essentially sealing + making plain properties non-writable.
- *
- * Note: all virtual (non-concrete) properties are currently non-configurable
- * and non-writable (and there are no accessor virtual properties), so they don't
- * need to be considered here now.
- */
-
-DUK_INTERNAL duk_bool_t duk_hobject_object_is_sealed_frozen_helper(duk_hthread *thr, duk_hobject *obj, duk_bool_t is_frozen) {
- duk_uint_fast32_t i;
-
- DUK_ASSERT(obj != NULL);
- DUK_UNREF(thr);
-
- /* Note: no allocation pressure, no need to check refcounts etc */
-
- /* must not be extensible */
- if (DUK_HOBJECT_HAS_EXTENSIBLE(obj)) {
- return 0;
- }
-
- /* all virtual properties are non-configurable and non-writable */
-
- /* entry part must not contain any configurable properties, or
- * writable properties (if is_frozen).
- */
- for (i = 0; i < DUK_HOBJECT_GET_ENEXT(obj); i++) {
- duk_small_uint_t flags;
-
- if (!DUK_HOBJECT_E_GET_KEY(thr->heap, obj, i)) {
- continue;
- }
-
- /* avoid multiple computations of flags address; bypasses macros */
- flags = (duk_small_uint_t) DUK_HOBJECT_E_GET_FLAGS(thr->heap, obj, i);
-
- if (flags & DUK_PROPDESC_FLAG_CONFIGURABLE) {
- return 0;
- }
- if (is_frozen &&
- !(flags & DUK_PROPDESC_FLAG_ACCESSOR) &&
- (flags & DUK_PROPDESC_FLAG_WRITABLE)) {
- return 0;
- }
- }
-
- /* array part must not contain any non-unused properties, as they would
- * be configurable and writable.
- */
- for (i = 0; i < DUK_HOBJECT_GET_ASIZE(obj); i++) {
- duk_tval *tv = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, obj, i);
- if (!DUK_TVAL_IS_UNUSED(tv)) {
- return 0;
- }
- }
-
- return 1;
-}
-
-/*
- * Object.preventExtensions() and Object.isExtensible() (E5 Sections 15.2.3.10, 15.2.3.13)
- *
- * Not needed, implemented by macros DUK_HOBJECT_{HAS,CLEAR,SET}_EXTENSIBLE
- * and the Object built-in bindings.
- */
-
-/* Undefine local defines */
-
-#undef DUK__NO_ARRAY_INDEX
-#undef DUK__HASH_INITIAL
-#undef DUK__HASH_PROBE_STEP
-#undef DUK__HASH_UNUSED
-#undef DUK__HASH_DELETED
-#undef DUK__VALSTACK_SPACE
-#line 1 "duk_hstring_misc.c"
-/*
- * Misc support functions
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr, duk_hstring *h, duk_uint_t pos) {
- duk_uint32_t boff;
- const duk_uint8_t *p, *p_start, *p_end;
- duk_ucodepoint_t cp;
-
- /* Caller must check character offset to be inside the string. */
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT_DISABLE(pos >= 0); /* unsigned */
- DUK_ASSERT(pos < (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h));
-
- boff = duk_heap_strcache_offset_char2byte(thr, h, (duk_uint32_t) pos);
- DUK_DDD(DUK_DDDPRINT("charCodeAt: pos=%ld -> boff=%ld, str=%!O",
- (long) pos, (long) boff, (duk_heaphdr *) h));
- DUK_ASSERT_DISABLE(boff >= 0);
- DUK_ASSERT(boff < DUK_HSTRING_GET_BYTELEN(h));
-
- p_start = DUK_HSTRING_GET_DATA(h);
- p_end = p_start + DUK_HSTRING_GET_BYTELEN(h);
- p = p_start + boff;
- DUK_DDD(DUK_DDDPRINT("p_start=%p, p_end=%p, p=%p",
- (const void *) p_start, (const void *) p_end,
- (const void *) p));
-
- /* This may throw an error though not for valid E5 strings. */
- cp = duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end);
- return cp;
-}
-
-#if !defined(DUK_USE_HSTRING_CLEN)
-DUK_INTERNAL duk_size_t duk_hstring_get_charlen(duk_hstring *h) {
- if (DUK_HSTRING_HAS_ASCII(h)) {
- /* Most practical strings will go here. */
- return DUK_HSTRING_GET_BYTELEN(h);
- } else {
- return duk_unicode_unvalidated_utf8_length(DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h));
- }
-}
-#endif /* !DUK_USE_HSTRING_CLEN */
-#line 1 "duk_hthread_alloc.c"
-/*
- * duk_hthread allocation and freeing.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Allocate initial stacks for a thread. Note that 'thr' must be reachable
- * as a garbage collection may be triggered by the allocation attempts.
- * Returns zero (without leaking memory) if init fails.
- */
-
-DUK_INTERNAL duk_bool_t duk_hthread_init_stacks(duk_heap *heap, duk_hthread *thr) {
- duk_size_t alloc_size;
- duk_size_t i;
-
- DUK_ASSERT(heap != NULL);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->valstack == NULL);
- DUK_ASSERT(thr->valstack_end == NULL);
- DUK_ASSERT(thr->valstack_bottom == NULL);
- DUK_ASSERT(thr->valstack_top == NULL);
- DUK_ASSERT(thr->callstack == NULL);
- DUK_ASSERT(thr->catchstack == NULL);
-
- /* valstack */
- alloc_size = sizeof(duk_tval) * DUK_VALSTACK_INITIAL_SIZE;
- thr->valstack = (duk_tval *) DUK_ALLOC(heap, alloc_size);
- if (!thr->valstack) {
- goto fail;
- }
- DUK_MEMZERO(thr->valstack, alloc_size);
- thr->valstack_end = thr->valstack + DUK_VALSTACK_INITIAL_SIZE;
-#if !defined(DUK_USE_PREFER_SIZE)
- thr->valstack_size = DUK_VALSTACK_INITIAL_SIZE;
-#endif
- thr->valstack_bottom = thr->valstack;
- thr->valstack_top = thr->valstack;
-
- for (i = 0; i < DUK_VALSTACK_INITIAL_SIZE; i++) {
- DUK_TVAL_SET_UNDEFINED(&thr->valstack[i]);
- }
-
- /* callstack */
- alloc_size = sizeof(duk_activation) * DUK_CALLSTACK_INITIAL_SIZE;
- thr->callstack = (duk_activation *) DUK_ALLOC(heap, alloc_size);
- if (!thr->callstack) {
- goto fail;
- }
- DUK_MEMZERO(thr->callstack, alloc_size);
- thr->callstack_size = DUK_CALLSTACK_INITIAL_SIZE;
- DUK_ASSERT(thr->callstack_top == 0);
-
- /* catchstack */
- alloc_size = sizeof(duk_catcher) * DUK_CATCHSTACK_INITIAL_SIZE;
- thr->catchstack = (duk_catcher *) DUK_ALLOC(heap, alloc_size);
- if (!thr->catchstack) {
- goto fail;
- }
- DUK_MEMZERO(thr->catchstack, alloc_size);
- thr->catchstack_size = DUK_CATCHSTACK_INITIAL_SIZE;
- DUK_ASSERT(thr->catchstack_top == 0);
-
- return 1;
-
- fail:
- DUK_FREE(heap, thr->valstack);
- DUK_FREE(heap, thr->callstack);
- DUK_FREE(heap, thr->catchstack);
-
- thr->valstack = NULL;
- thr->callstack = NULL;
- thr->catchstack = NULL;
- return 0;
-}
-
-/* For indirect allocs. */
-
-DUK_INTERNAL void *duk_hthread_get_valstack_ptr(duk_heap *heap, void *ud) {
- duk_hthread *thr = (duk_hthread *) ud;
- DUK_UNREF(heap);
- return (void *) thr->valstack;
-}
-
-DUK_INTERNAL void *duk_hthread_get_callstack_ptr(duk_heap *heap, void *ud) {
- duk_hthread *thr = (duk_hthread *) ud;
- DUK_UNREF(heap);
- return (void *) thr->callstack;
-}
-
-DUK_INTERNAL void *duk_hthread_get_catchstack_ptr(duk_heap *heap, void *ud) {
- duk_hthread *thr = (duk_hthread *) ud;
- DUK_UNREF(heap);
- return (void *) thr->catchstack;
-}
-#line 1 "duk_hthread_builtins.c"
-/*
- * Initialize built-in objects. Current thread must have a valstack
- * and initialization errors may longjmp, so a setjmp() catch point
- * must exist.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Encoding constants, must match genbuiltins.py
- */
-
-#define DUK__CLASS_BITS 5
-#define DUK__BIDX_BITS 7
-#define DUK__STRIDX_BITS 9 /* XXX: try to optimize to 8 (would now be possible, <200 used) */
-#define DUK__NATIDX_BITS 8
-#define DUK__NUM_NORMAL_PROPS_BITS 6
-#define DUK__NUM_FUNC_PROPS_BITS 6
-#define DUK__PROP_FLAGS_BITS 3
-#define DUK__STRING_LENGTH_BITS 8
-#define DUK__STRING_CHAR_BITS 7
-#define DUK__LENGTH_PROP_BITS 3
-#define DUK__NARGS_BITS 3
-#define DUK__PROP_TYPE_BITS 3
-#define DUK__MAGIC_BITS 16
-
-#define DUK__NARGS_VARARGS_MARKER 0x07
-#define DUK__NO_CLASS_MARKER 0x00 /* 0 = DUK_HOBJECT_CLASS_UNUSED */
-#define DUK__NO_BIDX_MARKER 0x7f
-#define DUK__NO_STRIDX_MARKER 0xff
-
-#define DUK__PROP_TYPE_DOUBLE 0
-#define DUK__PROP_TYPE_STRING 1
-#define DUK__PROP_TYPE_STRIDX 2
-#define DUK__PROP_TYPE_BUILTIN 3
-#define DUK__PROP_TYPE_UNDEFINED 4
-#define DUK__PROP_TYPE_BOOLEAN_TRUE 5
-#define DUK__PROP_TYPE_BOOLEAN_FALSE 6
-#define DUK__PROP_TYPE_ACCESSOR 7
-
-/*
- * Create built-in objects by parsing an init bitstream generated
- * by genbuiltins.py.
- */
-
-#if defined(DUK_USE_ROM_OBJECTS)
-#if defined(DUK_USE_ROM_GLOBAL_CLONE) || defined(DUK_USE_ROM_GLOBAL_INHERIT)
-DUK_LOCAL void duk__duplicate_ram_global_object(duk_hthread *thr) {
- duk_context *ctx;
- duk_hobject *h1;
-#if defined(DUK_USE_ROM_GLOBAL_CLONE)
- duk_hobject *h2;
- duk_uint8_t *props;
- duk_size_t alloc_size;
-#endif
-
- ctx = (duk_context *) thr;
-
- /* XXX: refactor into internal helper, duk_clone_hobject() */
-
-#if defined(DUK_USE_ROM_GLOBAL_INHERIT)
- /* Inherit from ROM-based global object: less RAM usage, less transparent. */
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_GLOBAL),
- DUK_BIDX_GLOBAL);
- h1 = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h1 != NULL);
-#elif defined(DUK_USE_ROM_GLOBAL_CLONE)
- /* Clone the properties of the ROM-based global object to create a
- * fully RAM-based global object. Uses more memory than the inherit
- * model but more compliant.
- */
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_GLOBAL),
- DUK_BIDX_OBJECT_PROTOTYPE);
- h1 = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h1 != NULL);
- h2 = thr->builtins[DUK_BIDX_GLOBAL];
- DUK_ASSERT(h2 != NULL);
-
- /* Copy the property table verbatim; this handles attributes etc.
- * For ROM objects it's not necessary (or possible) to update
- * refcounts so leave them as is.
- */
- alloc_size = DUK_HOBJECT_P_ALLOC_SIZE(h2);
- DUK_ASSERT(alloc_size > 0);
- props = DUK_ALLOC(thr->heap, alloc_size);
- if (!props) {
- DUK_ERROR_ALLOC_DEFMSG(thr);
- return;
- }
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, h2) != NULL);
- DUK_MEMCPY((void *) props, (const void *) DUK_HOBJECT_GET_PROPS(thr->heap, h2), alloc_size);
-
- /* XXX: keep property attributes or tweak them here?
- * Properties will now be non-configurable even when they're
- * normally configurable for the global object.
- */
-
- DUK_ASSERT(DUK_HOBJECT_GET_PROPS(thr->heap, h1) == NULL);
- DUK_HOBJECT_SET_PROPS(thr->heap, h1, props);
- DUK_HOBJECT_SET_ESIZE(h1, DUK_HOBJECT_GET_ESIZE(h2));
- DUK_HOBJECT_SET_ENEXT(h1, DUK_HOBJECT_GET_ENEXT(h2));
- DUK_HOBJECT_SET_ASIZE(h1, DUK_HOBJECT_GET_ASIZE(h2));
- DUK_HOBJECT_SET_HSIZE(h1, DUK_HOBJECT_GET_HSIZE(h2));
-#else
-#error internal error in defines
-#endif
-
- duk_hobject_compact_props(thr, h1);
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL] != NULL);
- DUK_ASSERT(!DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE((duk_heaphdr *) thr->builtins[DUK_BIDX_GLOBAL])); /* no need to decref */
- thr->builtins[DUK_BIDX_GLOBAL] = h1;
- DUK_HOBJECT_INCREF(thr, h1);
- DUK_D(DUK_DPRINT("duplicated global object: %!O", h1));
-
-
- /* Create a fresh object environment for the global scope. This is
- * needed so that the global scope points to the newly created RAM-based
- * global object.
- */
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV),
- -1); /* no prototype */
- h1 = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h1 != NULL);
- duk_dup(ctx, -2);
- duk_dup(ctx, -1); /* -> [ ... new_global new_globalenv new_global new_global ] */
- duk_xdef_prop_stridx(thr, -3, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx(thr, -2, DUK_STRIDX_INT_THIS, DUK_PROPDESC_FLAGS_NONE); /* always provideThis=true */
-
- duk_hobject_compact_props(thr, h1);
- DUK_ASSERT(thr->builtins[DUK_BIDX_GLOBAL_ENV] != NULL);
- DUK_ASSERT(!DUK_HEAPHDR_NEEDS_REFCOUNT_UPDATE((duk_heaphdr *) thr->builtins[DUK_BIDX_GLOBAL_ENV])); /* no need to decref */
- thr->builtins[DUK_BIDX_GLOBAL_ENV] = h1;
- DUK_HOBJECT_INCREF(thr, h1);
- DUK_D(DUK_DPRINT("duplicated global env: %!O", h1));
-
- duk_pop_2(ctx);
-}
-#endif /* DUK_USE_ROM_GLOBAL_CLONE || DUK_USE_ROM_GLOBAL_INHERIT */
-
-DUK_INTERNAL void duk_hthread_create_builtin_objects(duk_hthread *thr) {
- /* Setup builtins from ROM objects. All heaps/threads will share
- * the same readonly objects.
- */
- duk_small_uint_t i;
-
- for (i = 0; i < DUK_NUM_BUILTINS; i++) {
- duk_hobject *h;
- h = (duk_hobject *) DUK_LOSE_CONST(duk_rom_builtins_bidx[i]);
- DUK_ASSERT(h != NULL);
- thr->builtins[i] = h;
- }
-
-#if defined(DUK_USE_ROM_GLOBAL_CLONE) || defined(DUK_USE_ROM_GLOBAL_INHERIT)
- /* By default the global object is read-only which is often much
- * more of an issue than having read-only built-in objects (like
- * RegExp, Date, etc). Use a RAM-based copy of the global object
- * and the global environment object for convenience.
- */
- duk__duplicate_ram_global_object(thr);
-#endif
-}
-#else /* DUK_USE_ROM_OBJECTS */
-DUK_LOCAL void duk__push_stridx(duk_context *ctx, duk_bitdecoder_ctx *bd) {
- duk_small_uint_t n;
-
- n = (duk_small_uint_t) duk_bd_decode(bd, DUK__STRIDX_BITS);
- DUK_ASSERT_DISABLE(n >= 0); /* unsigned */
- DUK_ASSERT(n < DUK_HEAP_NUM_STRINGS);
- duk_push_hstring_stridx(ctx, n);
-}
-DUK_LOCAL void duk__push_string(duk_context *ctx, duk_bitdecoder_ctx *bd) {
- duk_small_uint_t n;
- duk_small_uint_t i;
- duk_uint8_t *p;
-
- n = (duk_small_uint_t) duk_bd_decode(bd, DUK__STRING_LENGTH_BITS);
- p = (duk_uint8_t *) duk_push_fixed_buffer(ctx, n);
- for (i = 0; i < n; i++) {
- *p++ = (duk_uint8_t) duk_bd_decode(bd, DUK__STRING_CHAR_BITS);
- }
- duk_to_string(ctx, -1);
-}
-DUK_LOCAL void duk__push_stridx_or_string(duk_context *ctx, duk_bitdecoder_ctx *bd) {
- if (duk_bd_decode_flag(bd)) {
- duk__push_string(ctx, bd);
- } else {
- duk__push_stridx(ctx, bd);
- }
-}
-DUK_LOCAL void duk__push_double(duk_context *ctx, duk_bitdecoder_ctx *bd) {
- duk_double_union du;
- duk_small_uint_t i;
-
- for (i = 0; i < 8; i++) {
- /* Encoding endianness must match target memory layout,
- * build scripts and genbuiltins.py must ensure this.
- */
- du.uc[i] = (duk_uint8_t) duk_bd_decode(bd, 8);
- }
-
- duk_push_number(ctx, du.d); /* push operation normalizes NaNs */
-}
-
-DUK_INTERNAL void duk_hthread_create_builtin_objects(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_bitdecoder_ctx bd_ctx;
- duk_bitdecoder_ctx *bd = &bd_ctx; /* convenience */
- duk_hobject *h;
- duk_small_uint_t i, j;
-
- DUK_D(DUK_DPRINT("INITBUILTINS BEGIN: DUK_NUM_BUILTINS=%d, DUK_NUM_BUILTINS_ALL=%d", (int) DUK_NUM_BUILTINS, (int) DUK_NUM_ALL_BUILTINS));
-
- DUK_MEMZERO(&bd_ctx, sizeof(bd_ctx));
- bd->data = (const duk_uint8_t *) duk_builtins_data;
- bd->length = (duk_size_t) DUK_BUILTINS_DATA_LENGTH;
-
- /*
- * First create all built-in bare objects on the empty valstack.
- *
- * Built-ins in the index range [0,DUK_NUM_BUILTINS-1] have value
- * stack indices matching their eventual thr->builtins[] index.
- *
- * Built-ins in the index range [DUK_NUM_BUILTINS,DUK_NUM_ALL_BUILTINS]
- * will exist on the value stack during init but won't be placed
- * into thr->builtins[]. These are objects referenced in some way
- * from thr->builtins[] roots but which don't need to be indexed by
- * Duktape through thr->builtins[] (e.g. user custom objects).
- */
-
- duk_require_stack(ctx, DUK_NUM_ALL_BUILTINS);
-
- DUK_DD(DUK_DDPRINT("create empty built-ins"));
- DUK_ASSERT_TOP(ctx, 0);
- for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) {
- duk_small_uint_t class_num;
- duk_small_int_t len = -1; /* must be signed */
-
- class_num = (duk_small_uint_t) duk_bd_decode(bd, DUK__CLASS_BITS);
- len = (duk_small_int_t) duk_bd_decode_flagged(bd, DUK__LENGTH_PROP_BITS, (duk_int32_t) -1 /*def_value*/);
-
- if (class_num == DUK_HOBJECT_CLASS_FUNCTION) {
- duk_small_uint_t natidx;
- duk_int_t c_nargs; /* must hold DUK_VARARGS */
- duk_c_function c_func;
- duk_int16_t magic;
-
- DUK_DDD(DUK_DDDPRINT("len=%ld", (long) len));
- DUK_ASSERT(len >= 0);
-
- natidx = (duk_small_uint_t) duk_bd_decode(bd, DUK__NATIDX_BITS);
- c_func = duk_bi_native_functions[natidx];
-
- c_nargs = (duk_small_uint_t) duk_bd_decode_flagged(bd, DUK__NARGS_BITS, len /*def_value*/);
- if (c_nargs == DUK__NARGS_VARARGS_MARKER) {
- c_nargs = DUK_VARARGS;
- }
-
- /* XXX: set magic directly here? (it could share the c_nargs arg) */
- duk_push_c_function_noexotic(ctx, c_func, c_nargs);
-
- h = duk_require_hobject(ctx, -1);
- DUK_ASSERT(h != NULL);
-
- /* Currently all built-in native functions are strict.
- * duk_push_c_function() now sets strict flag, so
- * assert for it.
- */
- DUK_ASSERT(DUK_HOBJECT_HAS_STRICT(h));
-
- /* XXX: function properties */
-
- /* Built-in 'name' is not writable by default. Function '.name'
- * is writable to allow user code to set a '.name' on a native
- * function.
- */
- duk__push_stridx_or_string(ctx, bd);
- duk_xdef_prop_stridx(ctx,
- -2,
- DUK_STRIDX_NAME,
- (i == DUK_BIDX_FUNCTION_PROTOTYPE) ?
- DUK_PROPDESC_FLAGS_W : DUK_PROPDESC_FLAGS_NONE);
-
- /* Almost all global level Function objects are constructable
- * but not all: Function.prototype is a non-constructable,
- * callable Function.
- */
- if (duk_bd_decode_flag(bd)) {
- DUK_ASSERT(DUK_HOBJECT_HAS_CONSTRUCTABLE(h));
- } else {
- DUK_HOBJECT_CLEAR_CONSTRUCTABLE(h);
- }
-
- /* Cast converts magic to 16-bit signed value */
- magic = (duk_int16_t) duk_bd_decode_flagged(bd, DUK__MAGIC_BITS, 0 /*def_value*/);
- ((duk_hnativefunction *) h)->magic = magic;
- } else {
- /* XXX: ARRAY_PART for Array prototype? */
-
- duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE,
- -1); /* no prototype or class yet */
-
- h = duk_require_hobject(ctx, -1);
- DUK_ASSERT(h != NULL);
- }
-
- DUK_HOBJECT_SET_CLASS_NUMBER(h, class_num);
-
- if (i < DUK_NUM_BUILTINS) {
- thr->builtins[i] = h;
- DUK_HOBJECT_INCREF(thr, &h->hdr);
- }
-
- if (len >= 0) {
- /*
- * For top-level objects, 'length' property has the following
- * default attributes: non-writable, non-enumerable, non-configurable
- * (E5 Section 15).
- *
- * However, 'length' property for Array.prototype has attributes
- * expected of an Array instance which are different: writable,
- * non-enumerable, non-configurable (E5 Section 15.4.5.2).
- *
- * This is currently determined implicitly based on class; there are
- * no attribute flags in the init data.
- */
-
- duk_push_int(ctx, len);
- duk_xdef_prop_stridx(ctx,
- -2,
- DUK_STRIDX_LENGTH,
- (class_num == DUK_HOBJECT_CLASS_ARRAY ? /* only Array.prototype matches */
- DUK_PROPDESC_FLAGS_W : DUK_PROPDESC_FLAGS_NONE));
- }
-
- /* enable exotic behaviors last */
-
- if (class_num == DUK_HOBJECT_CLASS_ARRAY) {
- DUK_HOBJECT_SET_EXOTIC_ARRAY(h);
- }
- if (class_num == DUK_HOBJECT_CLASS_STRING) {
- DUK_HOBJECT_SET_EXOTIC_STRINGOBJ(h);
- }
-
- /* some assertions */
-
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h));
- /* DUK_HOBJECT_FLAG_CONSTRUCTABLE varies */
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(h));
- DUK_ASSERT(!DUK_HOBJECT_HAS_COMPILEDFUNCTION(h));
- /* DUK_HOBJECT_FLAG_NATIVEFUNCTION varies */
- DUK_ASSERT(!DUK_HOBJECT_HAS_THREAD(h));
- DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(h)); /* currently, even for Array.prototype */
- /* DUK_HOBJECT_FLAG_STRICT varies */
- DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(h) || /* all native functions have NEWENV */
- DUK_HOBJECT_HAS_NEWENV(h));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NAMEBINDING(h));
- DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(h));
- DUK_ASSERT(!DUK_HOBJECT_HAS_ENVRECCLOSED(h));
- /* DUK_HOBJECT_FLAG_EXOTIC_ARRAY varies */
- /* DUK_HOBJECT_FLAG_EXOTIC_STRINGOBJ varies */
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(h));
-
- DUK_DDD(DUK_DDDPRINT("created built-in %ld, class=%ld, length=%ld", (long) i, (long) class_num, (long) len));
- }
-
- /*
- * Then decode the builtins init data (see genbuiltins.py) to
- * init objects
- */
-
- DUK_DD(DUK_DDPRINT("initialize built-in object properties"));
- for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) {
- duk_small_uint_t t;
- duk_small_uint_t num;
-
- DUK_DDD(DUK_DDDPRINT("initializing built-in object at index %ld", (long) i));
- h = duk_require_hobject(ctx, i);
- DUK_ASSERT(h != NULL);
-
- t = (duk_small_uint_t) duk_bd_decode(bd, DUK__BIDX_BITS);
- if (t != DUK__NO_BIDX_MARKER) {
- DUK_DDD(DUK_DDDPRINT("set internal prototype: built-in %ld", (long) t));
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, duk_require_hobject(ctx, t));
- }
-
- t = (duk_small_uint_t) duk_bd_decode(bd, DUK__BIDX_BITS);
- if (t != DUK__NO_BIDX_MARKER) {
- /* 'prototype' property for all built-in objects (which have it) has attributes:
- * [[Writable]] = false,
- * [[Enumerable]] = false,
- * [[Configurable]] = false
- */
- DUK_DDD(DUK_DDDPRINT("set external prototype: built-in %ld", (long) t));
- duk_xdef_prop_stridx_builtin(ctx, i, DUK_STRIDX_PROTOTYPE, t, DUK_PROPDESC_FLAGS_NONE);
- }
-
- t = (duk_small_uint_t) duk_bd_decode(bd, DUK__BIDX_BITS);
- if (t != DUK__NO_BIDX_MARKER) {
- /* 'constructor' property for all built-in objects (which have it) has attributes:
- * [[Writable]] = true,
- * [[Enumerable]] = false,
- * [[Configurable]] = true
- */
- DUK_DDD(DUK_DDDPRINT("set external constructor: built-in %ld", (long) t));
- duk_xdef_prop_stridx_builtin(ctx, i, DUK_STRIDX_CONSTRUCTOR, t, DUK_PROPDESC_FLAGS_WC);
- }
-
- /* normal valued properties */
- num = (duk_small_uint_t) duk_bd_decode(bd, DUK__NUM_NORMAL_PROPS_BITS);
- DUK_DDD(DUK_DDDPRINT("built-in object %ld, %ld normal valued properties", (long) i, (long) num));
- for (j = 0; j < num; j++) {
- duk_small_uint_t prop_flags;
-
- duk__push_stridx_or_string(ctx, bd);
-
- /*
- * Property attribute defaults are defined in E5 Section 15 (first
- * few pages); there is a default for all properties and a special
- * default for 'length' properties. Variation from the defaults is
- * signaled using a single flag bit in the bitstream.
- */
-
- if (duk_bd_decode_flag(bd)) {
- prop_flags = (duk_small_uint_t) duk_bd_decode(bd, DUK__PROP_FLAGS_BITS);
- } else {
- prop_flags = DUK_PROPDESC_FLAGS_WC;
- }
-
- t = (duk_small_uint_t) duk_bd_decode(bd, DUK__PROP_TYPE_BITS);
-
- DUK_DDD(DUK_DDDPRINT("built-in %ld, normal-valued property %ld, key %!T, flags 0x%02lx, type %ld",
- (long) i, (long) j, duk_get_tval(ctx, -1), (unsigned long) prop_flags, (long) t));
-
- switch (t) {
- case DUK__PROP_TYPE_DOUBLE: {
- duk__push_double(ctx, bd);
- break;
- }
- case DUK__PROP_TYPE_STRING: {
- duk__push_string(ctx, bd);
- break;
- }
- case DUK__PROP_TYPE_STRIDX: {
- duk__push_stridx(ctx, bd);
- break;
- }
- case DUK__PROP_TYPE_BUILTIN: {
- duk_small_uint_t bidx;
-
- bidx = (duk_small_uint_t) duk_bd_decode(bd, DUK__BIDX_BITS);
- DUK_ASSERT(bidx != DUK__NO_BIDX_MARKER);
- duk_dup(ctx, (duk_idx_t) bidx);
- break;
- }
- case DUK__PROP_TYPE_UNDEFINED: {
- duk_push_undefined(ctx);
- break;
- }
- case DUK__PROP_TYPE_BOOLEAN_TRUE: {
- duk_push_true(ctx);
- break;
- }
- case DUK__PROP_TYPE_BOOLEAN_FALSE: {
- duk_push_false(ctx);
- break;
- }
- case DUK__PROP_TYPE_ACCESSOR: {
- duk_small_uint_t natidx_getter = (duk_small_uint_t) duk_bd_decode(bd, DUK__NATIDX_BITS);
- duk_small_uint_t natidx_setter = (duk_small_uint_t) duk_bd_decode(bd, DUK__NATIDX_BITS);
- duk_c_function c_func_getter;
- duk_c_function c_func_setter;
-
- /* XXX: this is a bit awkward because there is no exposed helper
- * in the API style, only this internal helper.
- */
- DUK_DDD(DUK_DDDPRINT("built-in accessor property: objidx=%ld, key=%!T, getteridx=%ld, setteridx=%ld, flags=0x%04lx",
- (long) i, duk_get_tval(ctx, -1), (long) natidx_getter, (long) natidx_setter, (unsigned long) prop_flags));
-
- c_func_getter = duk_bi_native_functions[natidx_getter];
- c_func_setter = duk_bi_native_functions[natidx_setter];
- duk_push_c_function_noconstruct_noexotic(ctx, c_func_getter, 0); /* always 0 args */
- duk_push_c_function_noconstruct_noexotic(ctx, c_func_setter, 1); /* always 1 arg */
-
- /* XXX: magic for getter/setter? use duk_def_prop()? */
-
- DUK_ASSERT((prop_flags & DUK_PROPDESC_FLAG_WRITABLE) == 0); /* genbuiltins.py ensures */
-
- prop_flags |= DUK_PROPDESC_FLAG_ACCESSOR; /* accessor flag not encoded explicitly */
- duk_hobject_define_accessor_internal(thr,
- duk_require_hobject(ctx, i),
- duk_get_hstring(ctx, -3),
- duk_require_hobject(ctx, -2),
- duk_require_hobject(ctx, -1),
- prop_flags);
- duk_pop_3(ctx); /* key, getter and setter, now reachable through object */
- goto skip_value;
- }
- default: {
- /* exhaustive */
- DUK_UNREACHABLE();
- }
- }
-
- DUK_ASSERT((prop_flags & DUK_PROPDESC_FLAG_ACCESSOR) == 0);
- duk_xdef_prop(ctx, i, prop_flags);
-
- skip_value:
- continue; /* avoid empty label at the end of a compound statement */
- }
-
- /* native function properties */
- num = (duk_small_uint_t) duk_bd_decode(bd, DUK__NUM_FUNC_PROPS_BITS);
- DUK_DDD(DUK_DDDPRINT("built-in object %ld, %ld function valued properties", (long) i, (long) num));
- for (j = 0; j < num; j++) {
- duk_hstring *h_key;
- duk_small_uint_t natidx;
- duk_int_t c_nargs; /* must hold DUK_VARARGS */
- duk_small_uint_t c_length;
- duk_int16_t magic;
- duk_c_function c_func;
- duk_hnativefunction *h_func;
-#if defined(DUK_USE_LIGHTFUNC_BUILTINS)
- duk_small_int_t lightfunc_eligible;
-#endif
-
- duk__push_stridx_or_string(ctx, bd);
- h_key = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_key != NULL);
- DUK_UNREF(h_key);
- natidx = (duk_small_uint_t) duk_bd_decode(bd, DUK__NATIDX_BITS);
-
- c_length = (duk_small_uint_t) duk_bd_decode(bd, DUK__LENGTH_PROP_BITS);
- c_nargs = (duk_int_t) duk_bd_decode_flagged(bd, DUK__NARGS_BITS, (duk_int32_t) c_length /*def_value*/);
- if (c_nargs == DUK__NARGS_VARARGS_MARKER) {
- c_nargs = DUK_VARARGS;
- }
-
- c_func = duk_bi_native_functions[natidx];
-
- DUK_DDD(DUK_DDDPRINT("built-in %ld, function-valued property %ld, key %!O, natidx %ld, length %ld, nargs %ld",
- (long) i, (long) j, (duk_heaphdr *) h_key, (long) natidx, (long) c_length,
- (c_nargs == DUK_VARARGS ? (long) -1 : (long) c_nargs)));
-
- /* Cast converts magic to 16-bit signed value */
- magic = (duk_int16_t) duk_bd_decode_flagged(bd, DUK__MAGIC_BITS, 0);
-
-#if defined(DUK_USE_LIGHTFUNC_BUILTINS)
- lightfunc_eligible =
- ((c_nargs >= DUK_LFUNC_NARGS_MIN && c_nargs <= DUK_LFUNC_NARGS_MAX) || (c_nargs == DUK_VARARGS)) &&
- (c_length <= DUK_LFUNC_LENGTH_MAX) &&
- (magic >= DUK_LFUNC_MAGIC_MIN && magic <= DUK_LFUNC_MAGIC_MAX);
-
- if (h_key == DUK_HTHREAD_STRING_EVAL(thr) ||
- h_key == DUK_HTHREAD_STRING_YIELD(thr) ||
- h_key == DUK_HTHREAD_STRING_RESUME(thr) ||
- h_key == DUK_HTHREAD_STRING_REQUIRE(thr)) {
- /* These functions have trouble working as lightfuncs.
- * Some of them have specific asserts and some may have
- * additional properties (e.g. 'require.id' may be written).
- */
- DUK_D(DUK_DPRINT("reject as lightfunc: key=%!O, i=%d, j=%d", (duk_heaphdr *) h_key, (int) i, (int) j));
- lightfunc_eligible = 0;
- }
-
- if (lightfunc_eligible) {
- duk_tval tv_lfunc;
- duk_small_uint_t lf_nargs = (c_nargs == DUK_VARARGS ? DUK_LFUNC_NARGS_VARARGS : c_nargs);
- duk_small_uint_t lf_flags = DUK_LFUNC_FLAGS_PACK(magic, c_length, lf_nargs);
- DUK_TVAL_SET_LIGHTFUNC(&tv_lfunc, c_func, lf_flags);
- duk_push_tval(ctx, &tv_lfunc);
- DUK_D(DUK_DPRINT("built-in function eligible as light function: i=%d, j=%d c_length=%ld, c_nargs=%ld, magic=%ld -> %!iT", (int) i, (int) j, (long) c_length, (long) c_nargs, (long) magic, duk_get_tval(ctx, -1)));
- goto lightfunc_skip;
- }
-
- DUK_D(DUK_DPRINT("built-in function NOT ELIGIBLE as light function: i=%d, j=%d c_length=%ld, c_nargs=%ld, magic=%ld", (int) i, (int) j, (long) c_length, (long) c_nargs, (long) magic));
-#endif /* DUK_USE_LIGHTFUNC_BUILTINS */
-
- /* [ (builtin objects) name ] */
-
- duk_push_c_function_noconstruct_noexotic(ctx, c_func, c_nargs);
- h_func = duk_require_hnativefunction(ctx, -1);
- DUK_UNREF(h_func);
-
- /* Currently all built-in native functions are strict.
- * This doesn't matter for many functions, but e.g.
- * String.prototype.charAt (and other string functions)
- * rely on being strict so that their 'this' binding is
- * not automatically coerced.
- */
- DUK_HOBJECT_SET_STRICT((duk_hobject *) h_func);
-
- /* No built-in functions are constructable except the top
- * level ones (Number, etc).
- */
- DUK_ASSERT(!DUK_HOBJECT_HAS_CONSTRUCTABLE((duk_hobject *) h_func));
-
- /* XXX: any way to avoid decoding magic bit; there are quite
- * many function properties and relatively few with magic values.
- */
- h_func->magic = magic;
-
- /* [ (builtin objects) name func ] */
-
- duk_push_int(ctx, c_length);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE);
-
- duk_dup(ctx, -2);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
-
- /* XXX: other properties of function instances; 'arguments', 'caller'. */
-
- DUK_DD(DUK_DDPRINT("built-in object %ld, function property %ld -> %!T",
- (long) i, (long) j, (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [ (builtin objects) name func ] */
-
- /*
- * The default property attributes are correct for all
- * function valued properties of built-in objects now.
- */
-
-#if defined(DUK_USE_LIGHTFUNC_BUILTINS)
- lightfunc_skip:
-#endif
-
- duk_xdef_prop(ctx, i, DUK_PROPDESC_FLAGS_WC);
-
- /* [ (builtin objects) ] */
- }
- }
-
- /*
- * Special post-tweaks, for cases not covered by the init data format.
- *
- * - Set Date.prototype.toGMTString to Date.prototype.toUTCString.
- * toGMTString is required to have the same Function object as
- * toUTCString in E5 Section B.2.6. Note that while Smjs respects
- * this, V8 does not (the Function objects are distinct).
- *
- * - Make DoubleError non-extensible.
- *
- * - Add info about most important effective compile options to Duktape.
- *
- * - Possibly remove some properties (values or methods) which are not
- * desirable with current feature options but are not currently
- * conditional in init data.
- */
-
- duk_get_prop_stridx(ctx, DUK_BIDX_DATE_PROTOTYPE, DUK_STRIDX_TO_UTC_STRING);
- duk_xdef_prop_stridx(ctx, DUK_BIDX_DATE_PROTOTYPE, DUK_STRIDX_TO_GMT_STRING, DUK_PROPDESC_FLAGS_WC);
-
- h = duk_require_hobject(ctx, DUK_BIDX_DOUBLE_ERROR);
- DUK_ASSERT(h != NULL);
- DUK_HOBJECT_CLEAR_EXTENSIBLE(h);
-
-#if !defined(DUK_USE_ES6_OBJECT_PROTO_PROPERTY)
- DUK_DD(DUK_DDPRINT("delete Object.prototype.__proto__ built-in which is not enabled in features"));
- (void) duk_hobject_delprop_raw(thr, thr->builtins[DUK_BIDX_OBJECT_PROTOTYPE], DUK_HTHREAD_STRING___PROTO__(thr), DUK_DELPROP_FLAG_THROW);
-#endif
-
-#if !defined(DUK_USE_ES6_OBJECT_SETPROTOTYPEOF)
- DUK_DD(DUK_DDPRINT("delete Object.setPrototypeOf built-in which is not enabled in features"));
- (void) duk_hobject_delprop_raw(thr, thr->builtins[DUK_BIDX_OBJECT_CONSTRUCTOR], DUK_HTHREAD_STRING_SET_PROTOTYPE_OF(thr), DUK_DELPROP_FLAG_THROW);
-#endif
-
- /* XXX: relocate */
- duk_push_string(ctx,
- /* Endianness indicator */
-#if defined(DUK_USE_INTEGER_LE)
- "l"
-#elif defined(DUK_USE_INTEGER_BE)
- "b"
-#elif defined(DUK_USE_INTEGER_ME) /* integer mixed endian not really used now */
- "m"
-#else
- "?"
-#endif
-#if defined(DUK_USE_DOUBLE_LE)
- "l"
-#elif defined(DUK_USE_DOUBLE_BE)
- "b"
-#elif defined(DUK_USE_DOUBLE_ME)
- "m"
-#else
- "?"
-#endif
- " "
- /* Packed or unpacked tval */
-#if defined(DUK_USE_PACKED_TVAL)
- "p"
-#else
- "u"
-#endif
-#if defined(DUK_USE_FASTINT)
- "f"
-#endif
- " "
- /* Low memory options */
-#if defined(DUK_USE_STRTAB_CHAIN)
- "c" /* chain */
-#elif defined(DUK_USE_STRTAB_PROBE)
- "p" /* probe */
-#else
- "?"
-#endif
-#if !defined(DUK_USE_HEAPPTR16) && !defined(DUK_DATAPTR16) && !defined(DUK_FUNCPTR16)
- "n"
-#endif
-#if defined(DUK_USE_HEAPPTR16)
- "h"
-#endif
-#if defined(DUK_USE_DATAPTR16)
- "d"
-#endif
-#if defined(DUK_USE_FUNCPTR16)
- "f"
-#endif
-#if defined(DUK_USE_REFCOUNT16)
- "R"
-#endif
-#if defined(DUK_USE_STRHASH16)
- "H"
-#endif
-#if defined(DUK_USE_STRLEN16)
- "S"
-#endif
-#if defined(DUK_USE_BUFLEN16)
- "B"
-#endif
-#if defined(DUK_USE_OBJSIZES16)
- "O"
-#endif
-#if defined(DUK_USE_LIGHTFUNC_BUILTINS)
- "L"
-#endif
-#if defined(DUK_USE_ROM_STRINGS) || defined(DUK_USE_ROM_OBJECTS)
- /* XXX: This won't be shown in practice now
- * because this code is not run when builtins
- * are in ROM.
- */
- "Z"
-#endif
- " "
- /* Object property allocation layout */
-#if defined(DUK_USE_HOBJECT_LAYOUT_1)
- "p1"
-#elif defined(DUK_USE_HOBJECT_LAYOUT_2)
- "p2"
-#elif defined(DUK_USE_HOBJECT_LAYOUT_3)
- "p3"
-#else
- "p?"
-#endif
- " "
- /* Alignment guarantee */
-#if (DUK_USE_ALIGN_BY == 4)
- "a4"
-#elif (DUK_USE_ALIGN_BY == 8)
- "a8"
-#elif (DUK_USE_ALIGN_BY == 1)
- "a1"
-#else
-#error invalid DUK_USE_ALIGN_BY
-#endif
- " "
- /* Architecture, OS, and compiler strings */
- DUK_USE_ARCH_STRING
- " "
- DUK_USE_OS_STRING
- " "
- DUK_USE_COMPILER_STRING);
- duk_xdef_prop_stridx(ctx, DUK_BIDX_DUKTAPE, DUK_STRIDX_ENV, DUK_PROPDESC_FLAGS_WC);
-
- /*
- * InitJS code - Ecmascript code evaluated from a built-in source
- * which provides e.g. backward compatibility. User can also provide
- * JS code to be evaluated at startup.
- */
-
-#ifdef DUK_USE_BUILTIN_INITJS
- /* XXX: compression */
- DUK_DD(DUK_DDPRINT("running built-in initjs"));
- duk_eval_string(ctx, (const char *) duk_initjs_data); /* initjs data is NUL terminated */
- duk_pop(ctx);
-#endif /* DUK_USE_BUILTIN_INITJS */
-
-#ifdef DUK_USE_USER_INITJS
- /* XXX: compression (as an option) */
- DUK_DD(DUK_DDPRINT("running user initjs"));
- duk_eval_string_noresult(ctx, (const char *) DUK_USE_USER_INITJS);
-#endif /* DUK_USE_USER_INITJS */
-
- /*
- * Since built-ins are not often extended, compact them.
- */
-
- DUK_DD(DUK_DDPRINT("compact built-ins"));
- for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) {
- duk_hobject_compact_props(thr, duk_require_hobject(ctx, i));
- }
-
- DUK_D(DUK_DPRINT("INITBUILTINS END"));
-
-#ifdef DUK_USE_DDPRINT
- for (i = 0; i < DUK_NUM_ALL_BUILTINS; i++) {
- DUK_DD(DUK_DDPRINT("built-in object %ld after initialization and compacting: %!@iO",
- (long) i, (duk_heaphdr *) duk_require_hobject(ctx, i)));
- }
-#endif
-
- /*
- * Pop built-ins from stack: they are now INCREF'd and
- * reachable from the builtins[] array or indirectly
- * through builtins[].
- */
-
- duk_set_top(ctx, 0);
- DUK_ASSERT_TOP(ctx, 0);
-}
-#endif /* DUK_USE_ROM_OBJECTS */
-
-DUK_INTERNAL void duk_hthread_copy_builtin_objects(duk_hthread *thr_from, duk_hthread *thr_to) {
- duk_small_uint_t i;
-
- for (i = 0; i < DUK_NUM_BUILTINS; i++) {
- thr_to->builtins[i] = thr_from->builtins[i];
- DUK_HOBJECT_INCREF_ALLOWNULL(thr_to, thr_to->builtins[i]); /* side effect free */
- }
-}
-#line 1 "duk_hthread_misc.c"
-/*
- * Thread support.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL void duk_hthread_terminate(duk_hthread *thr) {
- DUK_ASSERT(thr != NULL);
-
- /* Order of unwinding is important */
-
- duk_hthread_catchstack_unwind(thr, 0);
-
- duk_hthread_callstack_unwind(thr, 0); /* side effects, possibly errors */
-
- thr->valstack_bottom = thr->valstack;
- duk_set_top((duk_context *) thr, 0); /* unwinds valstack, updating refcounts */
-
- thr->state = DUK_HTHREAD_STATE_TERMINATED;
-
- /* Here we could remove references to built-ins, but it may not be
- * worth the effort because built-ins are quite likely to be shared
- * with another (unterminated) thread, and terminated threads are also
- * usually garbage collected quite quickly. Also, doing DECREFs
- * could trigger finalization, which would run on the current thread
- * and have access to only some of the built-ins. Garbage collection
- * deals with this correctly already.
- */
-
- /* XXX: Shrink the stacks to minimize memory usage? May not
- * be worth the effort because terminated threads are usually
- * garbage collected quite soon.
- */
-}
-
-DUK_INTERNAL duk_activation *duk_hthread_get_current_activation(duk_hthread *thr) {
- DUK_ASSERT(thr != NULL);
-
- if (thr->callstack_top > 0) {
- return thr->callstack + thr->callstack_top - 1;
- } else {
- return NULL;
- }
-}
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_curr_pc(duk_hthread *thr, duk_activation *act) {
- duk_instr_t *bcode;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(act != NULL);
- DUK_UNREF(thr);
-
- /* XXX: store 'bcode' pointer to activation for faster lookup? */
- if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) {
- bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func));
- return (duk_uint_fast32_t) (act->curr_pc - bcode);
- }
- return 0;
-}
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
-DUK_INTERNAL duk_uint_fast32_t duk_hthread_get_act_prev_pc(duk_hthread *thr, duk_activation *act) {
- duk_instr_t *bcode;
- duk_uint_fast32_t ret;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(act != NULL);
- DUK_UNREF(thr);
-
- if (act->func && DUK_HOBJECT_IS_COMPILEDFUNCTION(act->func)) {
- bcode = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) (act->func));
- ret = (duk_uint_fast32_t) (act->curr_pc - bcode);
- if (ret > 0) {
- ret--;
- }
- return ret;
- }
- return 0;
-}
-
-/* Write bytecode executor's curr_pc back to topmost activation (if any). */
-DUK_INTERNAL void duk_hthread_sync_currpc(duk_hthread *thr) {
- duk_activation *act;
-
- DUK_ASSERT(thr != NULL);
-
- if (thr->ptr_curr_pc != NULL) {
- /* ptr_curr_pc != NULL only when bytecode executor is active. */
- DUK_ASSERT(thr->callstack_top > 0);
- act = thr->callstack + thr->callstack_top - 1;
- act->curr_pc = *thr->ptr_curr_pc;
- }
-}
-
-DUK_INTERNAL void duk_hthread_sync_and_null_currpc(duk_hthread *thr) {
- duk_activation *act;
-
- DUK_ASSERT(thr != NULL);
-
- if (thr->ptr_curr_pc != NULL) {
- /* ptr_curr_pc != NULL only when bytecode executor is active. */
- DUK_ASSERT(thr->callstack_top > 0);
- act = thr->callstack + thr->callstack_top - 1;
- act->curr_pc = *thr->ptr_curr_pc;
- thr->ptr_curr_pc = NULL;
- }
-}
-#line 1 "duk_hthread_stacks.c"
-/*
- * Manipulation of thread stacks (valstack, callstack, catchstack).
- *
- * Ideally unwinding of stacks should have no side effects, which would
- * then favor separate unwinding and shrink check primitives for each
- * stack type. A shrink check may realloc and thus have side effects.
- *
- * However, currently callstack unwinding itself has side effects, as it
- * needs to DECREF multiple objects, close environment records, etc.
- * Stacks must thus be unwound in the correct order by the caller.
- *
- * (XXX: This should be probably reworked so that there is a shared
- * unwind primitive which handles all stacks as requested, and knows
- * the proper order for unwinding.)
- *
- * Valstack entries above 'top' are always kept initialized to
- * "undefined unused". Callstack and catchstack entries above 'top'
- * are not zeroed and are left as garbage.
- *
- * Value stack handling is mostly a part of the API implementation.
- */
-
-/* include removed: duk_internal.h */
-
-/* check that there is space for at least one new entry */
-DUK_INTERNAL void duk_hthread_callstack_grow(duk_hthread *thr) {
- duk_activation *new_ptr;
- duk_size_t old_size;
- duk_size_t new_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* avoid warning (unsigned) */
- DUK_ASSERT(thr->callstack_size >= thr->callstack_top);
-
- if (thr->callstack_top < thr->callstack_size) {
- return;
- }
-
- old_size = thr->callstack_size;
- new_size = old_size + DUK_CALLSTACK_GROW_STEP;
-
- /* this is a bit approximate (errors out before max is reached); this is OK */
- if (new_size >= thr->callstack_max) {
- DUK_ERROR_RANGE(thr, DUK_STR_CALLSTACK_LIMIT);
- }
-
- DUK_DD(DUK_DDPRINT("growing callstack %ld -> %ld", (long) old_size, (long) new_size));
-
- /*
- * Note: must use indirect variant of DUK_REALLOC() because underlying
- * pointer may be changed by mark-and-sweep.
- */
-
- DUK_ASSERT(new_size > 0);
- new_ptr = (duk_activation *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_callstack_ptr, (void *) thr, sizeof(duk_activation) * new_size);
- if (!new_ptr) {
- /* No need for a NULL/zero-size check because new_size > 0) */
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- thr->callstack = new_ptr;
- thr->callstack_size = new_size;
-
- /* note: any entries above the callstack top are garbage and not zeroed */
-}
-
-DUK_INTERNAL void duk_hthread_callstack_shrink_check(duk_hthread *thr) {
- duk_size_t new_size;
- duk_activation *p;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->callstack_top >= 0); /* avoid warning (unsigned) */
- DUK_ASSERT(thr->callstack_size >= thr->callstack_top);
-
- if (thr->callstack_size - thr->callstack_top < DUK_CALLSTACK_SHRINK_THRESHOLD) {
- return;
- }
-
- new_size = thr->callstack_top + DUK_CALLSTACK_SHRINK_SPARE;
- DUK_ASSERT(new_size >= thr->callstack_top);
-
- DUK_DD(DUK_DDPRINT("shrinking callstack %ld -> %ld", (long) thr->callstack_size, (long) new_size));
-
- /*
- * Note: must use indirect variant of DUK_REALLOC() because underlying
- * pointer may be changed by mark-and-sweep.
- */
-
- /* shrink failure is not fatal */
- p = (duk_activation *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_callstack_ptr, (void *) thr, sizeof(duk_activation) * new_size);
- if (p) {
- thr->callstack = p;
- thr->callstack_size = new_size;
- } else {
- /* Because new_size != 0, if condition doesn't need to be
- * (p != NULL || new_size == 0).
- */
- DUK_ASSERT(new_size != 0);
- DUK_D(DUK_DPRINT("callstack shrink failed, ignoring"));
- }
-
- /* note: any entries above the callstack top are garbage and not zeroed */
-}
-
-DUK_INTERNAL void duk_hthread_callstack_unwind(duk_hthread *thr, duk_size_t new_top) {
- duk_size_t idx;
-
- DUK_DDD(DUK_DDDPRINT("unwind callstack top of thread %p from %ld to %ld",
- (void *) thr,
- (thr != NULL ? (long) thr->callstack_top : (long) -1),
- (long) new_top));
-
- DUK_ASSERT(thr);
- DUK_ASSERT(thr->heap);
- DUK_ASSERT_DISABLE(new_top >= 0); /* unsigned */
- DUK_ASSERT((duk_size_t) new_top <= thr->callstack_top); /* cannot grow */
-
- /*
- * The loop below must avoid issues with potential callstack
- * reallocations. A resize (and other side effects) may happen
- * e.g. due to finalizer/errhandler calls caused by a refzero or
- * mark-and-sweep. Arbitrary finalizers may run, because when
- * an environment record is refzero'd, it may refer to arbitrary
- * values which also become refzero'd.
- *
- * So, the pointer 'p' is re-looked-up below whenever a side effect
- * might have changed it.
- */
-
- idx = thr->callstack_top;
- while (idx > new_top) {
- duk_activation *act;
- duk_hobject *func;
-#ifdef DUK_USE_REFERENCE_COUNTING
- duk_hobject *tmp;
-#endif
-#ifdef DUK_USE_DEBUGGER_SUPPORT
- duk_heap *heap;
-#endif
-
- idx--;
- DUK_ASSERT_DISABLE(idx >= 0); /* unsigned */
- DUK_ASSERT((duk_size_t) idx < thr->callstack_size); /* true, despite side effect resizes */
-
- act = thr->callstack + idx;
- /* With lightfuncs, act 'func' may be NULL */
-
-#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- /*
- * Restore 'caller' property for non-strict callee functions.
- */
-
- func = DUK_ACT_GET_FUNC(act);
- if (func != NULL && !DUK_HOBJECT_HAS_STRICT(func)) {
- duk_tval *tv_caller;
- duk_tval tv_tmp;
- duk_hobject *h_tmp;
-
- tv_caller = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_CALLER(thr));
-
- /* The act->prev_caller should only be set if the entry for 'caller'
- * exists (as it is only set in that case, and the property is not
- * configurable), but handle all the cases anyway.
- */
-
- if (tv_caller) {
- DUK_TVAL_SET_TVAL(&tv_tmp, tv_caller);
- if (act->prev_caller) {
- /* Just transfer the refcount from act->prev_caller to tv_caller,
- * so no need for a refcount update. This is the expected case.
- */
- DUK_TVAL_SET_OBJECT(tv_caller, act->prev_caller);
- act->prev_caller = NULL;
- } else {
- DUK_TVAL_SET_NULL(tv_caller); /* no incref needed */
- DUK_ASSERT(act->prev_caller == NULL);
- }
- DUK_TVAL_DECREF(thr, &tv_tmp); /* side effects */
- } else {
- h_tmp = act->prev_caller;
- if (h_tmp) {
- act->prev_caller = NULL;
- DUK_HOBJECT_DECREF(thr, h_tmp); /* side effects */
- }
- }
- act = thr->callstack + idx; /* avoid side effects */
- DUK_ASSERT(act->prev_caller == NULL);
- }
-#endif
-
- /*
- * Unwind debugger state. If we unwind while stepping
- * (either step over or step into), pause execution.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- heap = thr->heap;
- if (heap->dbg_step_thread == thr &&
- heap->dbg_step_csindex == idx) {
- /* Pause for all step types: step into, step over, step out.
- * This is the only place explicitly handling a step out.
- */
- DUK_HEAP_SET_PAUSED(heap);
- DUK_ASSERT(heap->dbg_step_thread == NULL);
- }
-#endif
-
- /*
- * Close environment record(s) if they exist.
- *
- * Only variable environments are closed. If lex_env != var_env, it
- * cannot currently contain any register bound declarations.
- *
- * Only environments created for a NEWENV function are closed. If an
- * environment is created for e.g. an eval call, it must not be closed.
- */
-
- func = DUK_ACT_GET_FUNC(act);
- if (func != NULL && !DUK_HOBJECT_HAS_NEWENV(func)) {
- DUK_DDD(DUK_DDDPRINT("skip closing environments, envs not owned by this activation"));
- goto skip_env_close;
- }
- /* func is NULL for lightfunc */
-
- DUK_ASSERT(act->lex_env == act->var_env);
- if (act->var_env != NULL) {
- DUK_DDD(DUK_DDDPRINT("closing var_env record %p -> %!O",
- (void *) act->var_env, (duk_heaphdr *) act->var_env));
- duk_js_close_environment_record(thr, act->var_env, func, act->idx_bottom);
- act = thr->callstack + idx; /* avoid side effect issues */
- }
-
-#if 0
- if (act->lex_env != NULL) {
- if (act->lex_env == act->var_env) {
- /* common case, already closed, so skip */
- DUK_DD(DUK_DDPRINT("lex_env and var_env are the same and lex_env "
- "already closed -> skip closing lex_env"));
- ;
- } else {
- DUK_DD(DUK_DDPRINT("closing lex_env record %p -> %!O",
- (void *) act->lex_env, (duk_heaphdr *) act->lex_env));
- duk_js_close_environment_record(thr, act->lex_env, DUK_ACT_GET_FUNC(act), act->idx_bottom);
- act = thr->callstack + idx; /* avoid side effect issues */
- }
- }
-#endif
-
- DUK_ASSERT((act->lex_env == NULL) ||
- ((duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->lex_env, DUK_HTHREAD_STRING_INT_CALLEE(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->lex_env, DUK_HTHREAD_STRING_INT_VARMAP(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->lex_env, DUK_HTHREAD_STRING_INT_THREAD(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->lex_env, DUK_HTHREAD_STRING_INT_REGBASE(thr)) == NULL)));
-
- DUK_ASSERT((act->var_env == NULL) ||
- ((duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->var_env, DUK_HTHREAD_STRING_INT_CALLEE(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->var_env, DUK_HTHREAD_STRING_INT_VARMAP(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->var_env, DUK_HTHREAD_STRING_INT_THREAD(thr)) == NULL) &&
- (duk_hobject_find_existing_entry_tval_ptr(thr->heap, act->var_env, DUK_HTHREAD_STRING_INT_REGBASE(thr)) == NULL)));
-
- skip_env_close:
-
- /*
- * Update preventcount
- */
-
- if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) {
- DUK_ASSERT(thr->callstack_preventcount >= 1);
- thr->callstack_preventcount--;
- }
-
- /*
- * Reference count updates
- *
- * Note: careful manipulation of refcounts. The top is
- * not updated yet, so all the activations are reachable
- * for mark-and-sweep (which may be triggered by decref).
- * However, the pointers are NULL so this is not an issue.
- */
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- tmp = act->var_env;
-#endif
- act->var_env = NULL;
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
- act = thr->callstack + idx; /* avoid side effect issues */
-#endif
-
-#ifdef DUK_USE_REFERENCE_COUNTING
- tmp = act->lex_env;
-#endif
- act->lex_env = NULL;
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
- act = thr->callstack + idx; /* avoid side effect issues */
-#endif
-
- /* Note: this may cause a corner case situation where a finalizer
- * may see a currently reachable activation whose 'func' is NULL.
- */
-#ifdef DUK_USE_REFERENCE_COUNTING
- tmp = DUK_ACT_GET_FUNC(act);
-#endif
- act->func = NULL;
-#ifdef DUK_USE_REFERENCE_COUNTING
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
- act = thr->callstack + idx; /* avoid side effect issues */
- DUK_UNREF(act);
-#endif
- }
-
- thr->callstack_top = new_top;
-
- /*
- * We could clear the book-keeping variables for the topmost activation,
- * but don't do so now.
- */
-#if 0
- if (thr->callstack_top > 0) {
- duk_activation *act = thr->callstack + thr->callstack_top - 1;
- act->idx_retval = 0;
- }
-#endif
-
- /* Note: any entries above the callstack top are garbage and not zeroed.
- * Also topmost activation idx_retval is garbage (not zeroed), and must
- * be ignored.
- */
-}
-
-DUK_INTERNAL void duk_hthread_catchstack_grow(duk_hthread *thr) {
- duk_catcher *new_ptr;
- duk_size_t old_size;
- duk_size_t new_size;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->catchstack_top); /* avoid warning (unsigned) */
- DUK_ASSERT(thr->catchstack_size >= thr->catchstack_top);
-
- if (thr->catchstack_top < thr->catchstack_size) {
- return;
- }
-
- old_size = thr->catchstack_size;
- new_size = old_size + DUK_CATCHSTACK_GROW_STEP;
-
- /* this is a bit approximate (errors out before max is reached); this is OK */
- if (new_size >= thr->catchstack_max) {
- DUK_ERROR_RANGE(thr, DUK_STR_CATCHSTACK_LIMIT);
- }
-
- DUK_DD(DUK_DDPRINT("growing catchstack %ld -> %ld", (long) old_size, (long) new_size));
-
- /*
- * Note: must use indirect variant of DUK_REALLOC() because underlying
- * pointer may be changed by mark-and-sweep.
- */
-
- DUK_ASSERT(new_size > 0);
- new_ptr = (duk_catcher *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_catchstack_ptr, (void *) thr, sizeof(duk_catcher) * new_size);
- if (!new_ptr) {
- /* No need for a NULL/zero-size check because new_size > 0) */
- DUK_ERROR_ALLOC_DEFMSG(thr);
- }
- thr->catchstack = new_ptr;
- thr->catchstack_size = new_size;
-
- /* note: any entries above the catchstack top are garbage and not zeroed */
-}
-
-DUK_INTERNAL void duk_hthread_catchstack_shrink_check(duk_hthread *thr) {
- duk_size_t new_size;
- duk_catcher *p;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(thr->catchstack_top >= 0); /* avoid warning (unsigned) */
- DUK_ASSERT(thr->catchstack_size >= thr->catchstack_top);
-
- if (thr->catchstack_size - thr->catchstack_top < DUK_CATCHSTACK_SHRINK_THRESHOLD) {
- return;
- }
-
- new_size = thr->catchstack_top + DUK_CATCHSTACK_SHRINK_SPARE;
- DUK_ASSERT(new_size >= thr->catchstack_top);
-
- DUK_DD(DUK_DDPRINT("shrinking catchstack %ld -> %ld", (long) thr->catchstack_size, (long) new_size));
-
- /*
- * Note: must use indirect variant of DUK_REALLOC() because underlying
- * pointer may be changed by mark-and-sweep.
- */
-
- /* shrink failure is not fatal */
- p = (duk_catcher *) DUK_REALLOC_INDIRECT(thr->heap, duk_hthread_get_catchstack_ptr, (void *) thr, sizeof(duk_catcher) * new_size);
- if (p) {
- thr->catchstack = p;
- thr->catchstack_size = new_size;
- } else {
- /* Because new_size != 0, if condition doesn't need to be
- * (p != NULL || new_size == 0).
- */
- DUK_ASSERT(new_size != 0);
- DUK_D(DUK_DPRINT("catchstack shrink failed, ignoring"));
- }
-
- /* note: any entries above the catchstack top are garbage and not zeroed */
-}
-
-DUK_INTERNAL void duk_hthread_catchstack_unwind(duk_hthread *thr, duk_size_t new_top) {
- duk_size_t idx;
-
- DUK_DDD(DUK_DDDPRINT("unwind catchstack top of thread %p from %ld to %ld",
- (void *) thr,
- (thr != NULL ? (long) thr->catchstack_top : (long) -1),
- (long) new_top));
-
- DUK_ASSERT(thr);
- DUK_ASSERT(thr->heap);
- DUK_ASSERT_DISABLE(new_top >= 0); /* unsigned */
- DUK_ASSERT((duk_size_t) new_top <= thr->catchstack_top); /* cannot grow */
-
- /*
- * Since there are no references in the catcher structure,
- * unwinding is quite simple. The only thing we need to
- * look out for is popping a possible lexical environment
- * established for an active catch clause.
- */
-
- idx = thr->catchstack_top;
- while (idx > new_top) {
- duk_catcher *p;
- duk_activation *act;
- duk_hobject *env;
-
- idx--;
- DUK_ASSERT_DISABLE(idx >= 0); /* unsigned */
- DUK_ASSERT((duk_size_t) idx < thr->catchstack_size);
-
- p = thr->catchstack + idx;
-
- if (DUK_CAT_HAS_LEXENV_ACTIVE(p)) {
- DUK_DDD(DUK_DDDPRINT("unwinding catchstack idx %ld, callstack idx %ld, callstack top %ld: lexical environment active",
- (long) idx, (long) p->callstack_index, (long) thr->callstack_top));
-
- /* XXX: Here we have a nasty dependency: the need to manipulate
- * the callstack means that catchstack must always be unwound by
- * the caller before unwinding the callstack. This should be fixed
- * later.
- */
-
- /* Note that multiple catchstack entries may refer to the same
- * callstack entry.
- */
- act = thr->callstack + p->callstack_index;
- DUK_ASSERT(act >= thr->callstack);
- DUK_ASSERT(act < thr->callstack + thr->callstack_top);
-
- DUK_DDD(DUK_DDDPRINT("catchstack_index=%ld, callstack_index=%ld, lex_env=%!iO",
- (long) idx, (long) p->callstack_index,
- (duk_heaphdr *) act->lex_env));
-
- env = act->lex_env; /* current lex_env of the activation (created for catcher) */
- DUK_ASSERT(env != NULL); /* must be, since env was created when catcher was created */
- act->lex_env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, env); /* prototype is lex_env before catcher created */
- DUK_HOBJECT_DECREF(thr, env);
-
- /* There is no need to decref anything else than 'env': if 'env'
- * becomes unreachable, refzero will handle decref'ing its prototype.
- */
- }
- }
-
- thr->catchstack_top = new_top;
-
- /* note: any entries above the catchstack top are garbage and not zeroed */
-}
-#line 1 "duk_js_call.c"
-/*
- * Call handling.
- *
- * Main functions are:
- *
- * - duk_handle_call_unprotected(): unprotected call to Ecmascript or
- * Duktape/C function
- * - duk_handle_call_protected(): protected call to Ecmascript or
- * Duktape/C function
- * - duk_handle_safe_call(): make a protected C call within current
- * activation
- * - duk_handle_ecma_call_setup(): Ecmascript-to-Ecmascript calls
- * (not always possible), including tail calls and coroutine resume
- *
- * See 'execution.rst'.
- *
- * Note: setjmp() and local variables have a nasty interaction,
- * see execution.rst; non-volatile locals modified after setjmp()
- * call are not guaranteed to keep their value.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Forward declarations.
- */
-
-DUK_LOCAL void duk__handle_call_inner(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_small_uint_t call_flags,
- duk_idx_t idx_func);
-DUK_LOCAL void duk__handle_call_error(duk_hthread *thr,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_valstack_end,
- duk_size_t entry_catchstack_top,
- duk_size_t entry_callstack_top,
- duk_int_t entry_call_recursion_depth,
- duk_hthread *entry_curr_thread,
- duk_uint_fast8_t entry_thread_state,
- duk_instr_t **entry_ptr_curr_pc,
- duk_idx_t idx_func,
- duk_jmpbuf *old_jmpbuf_ptr);
-DUK_LOCAL void duk__handle_safe_call_inner(duk_hthread *thr,
- duk_safe_call_function func,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_callstack_top,
- duk_size_t entry_catchstack_top);
-DUK_LOCAL void duk__handle_safe_call_error(duk_hthread *thr,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_callstack_top,
- duk_size_t entry_catchstack_top,
- duk_jmpbuf *old_jmpbuf_ptr);
-DUK_LOCAL void duk__handle_safe_call_shared(duk_hthread *thr,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_int_t entry_call_recursion_depth,
- duk_hthread *entry_curr_thread,
- duk_uint_fast8_t entry_thread_state,
- duk_instr_t **entry_ptr_curr_pc);
-
-/*
- * Interrupt counter fixup (for development only).
- */
-
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
-DUK_LOCAL void duk__interrupt_fixup(duk_hthread *thr, duk_hthread *entry_curr_thread) {
- /* Currently the bytecode executor and executor interrupt
- * instruction counts are off because we don't execute the
- * interrupt handler when we're about to exit from the initial
- * user call into Duktape.
- *
- * If we were to execute the interrupt handler here, the counts
- * would match. You can enable this block manually to check
- * that this is the case.
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
-
-#if defined(DUK_USE_INTERRUPT_DEBUG_FIXUP)
- if (entry_curr_thread == NULL) {
- thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter;
- thr->heap->inst_count_interrupt += thr->interrupt_init;
- DUK_DD(DUK_DDPRINT("debug test: updated interrupt count on exit to "
- "user code, instruction counts: executor=%ld, interrupt=%ld",
- (long) thr->heap->inst_count_exec, (long) thr->heap->inst_count_interrupt));
- DUK_ASSERT(thr->heap->inst_count_exec == thr->heap->inst_count_interrupt);
- }
-#else
- DUK_UNREF(thr);
- DUK_UNREF(entry_curr_thread);
-#endif
-}
-#endif
-
-/*
- * Arguments object creation.
- *
- * Creating arguments objects involves many small details, see E5 Section
- * 10.6 for the specific requirements. Much of the arguments object exotic
- * behavior is implemented in duk_hobject_props.c, and is enabled by the
- * object flag DUK_HOBJECT_FLAG_EXOTIC_ARGUMENTS.
- */
-
-DUK_LOCAL void duk__create_arguments_object(duk_hthread *thr,
- duk_hobject *func,
- duk_hobject *varenv,
- duk_idx_t idx_argbase, /* idx of first argument on stack */
- duk_idx_t num_stack_args) { /* num args starting from idx_argbase */
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *arg; /* 'arguments' */
- duk_hobject *formals; /* formals for 'func' (may be NULL if func is a C function) */
- duk_idx_t i_arg;
- duk_idx_t i_map;
- duk_idx_t i_mappednames;
- duk_idx_t i_formals;
- duk_idx_t i_argbase;
- duk_idx_t n_formals;
- duk_idx_t idx;
- duk_bool_t need_map;
-
- DUK_DDD(DUK_DDDPRINT("creating arguments object for func=%!iO, varenv=%!iO, "
- "idx_argbase=%ld, num_stack_args=%ld",
- (duk_heaphdr *) func, (duk_heaphdr *) varenv,
- (long) idx_argbase, (long) num_stack_args));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_NONBOUND_FUNCTION(func));
- DUK_ASSERT(varenv != NULL);
- DUK_ASSERT(idx_argbase >= 0); /* assumed to bottom relative */
- DUK_ASSERT(num_stack_args >= 0);
-
- need_map = 0;
-
- i_argbase = idx_argbase;
- DUK_ASSERT(i_argbase >= 0);
-
- duk_push_hobject(ctx, func);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_FORMALS);
- formals = duk_get_hobject(ctx, -1);
- n_formals = 0;
- if (formals) {
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_LENGTH);
- n_formals = (duk_idx_t) duk_require_int(ctx, -1);
- duk_pop(ctx);
- }
- duk_remove(ctx, -2); /* leave formals on stack for later use */
- i_formals = duk_require_top_index(ctx);
-
- DUK_ASSERT(n_formals >= 0);
- DUK_ASSERT(formals != NULL || n_formals == 0);
-
- DUK_DDD(DUK_DDDPRINT("func=%!O, formals=%!O, n_formals=%ld",
- (duk_heaphdr *) func, (duk_heaphdr *) formals,
- (long) n_formals));
-
- /* [ ... formals ] */
-
- /*
- * Create required objects:
- * - 'arguments' object: array-like, but not an array
- * - 'map' object: internal object, tied to 'arguments'
- * - 'mappedNames' object: temporary value used during construction
- */
-
- i_arg = duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_FLAG_ARRAY_PART |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_ARGUMENTS),
- DUK_BIDX_OBJECT_PROTOTYPE);
- DUK_ASSERT(i_arg >= 0);
- arg = duk_require_hobject(ctx, -1);
- DUK_ASSERT(arg != NULL);
-
- i_map = duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- -1); /* no prototype */
- DUK_ASSERT(i_map >= 0);
-
- i_mappednames = duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJECT),
- -1); /* no prototype */
- DUK_ASSERT(i_mappednames >= 0);
-
- /* [ ... formals arguments map mappedNames ] */
-
- DUK_DDD(DUK_DDDPRINT("created arguments related objects: "
- "arguments at index %ld -> %!O "
- "map at index %ld -> %!O "
- "mappednames at index %ld -> %!O",
- (long) i_arg, (duk_heaphdr *) duk_get_hobject(ctx, i_arg),
- (long) i_map, (duk_heaphdr *) duk_get_hobject(ctx, i_map),
- (long) i_mappednames, (duk_heaphdr *) duk_get_hobject(ctx, i_mappednames)));
-
- /*
- * Init arguments properties, map, etc.
- */
-
- duk_push_int(ctx, num_stack_args);
- duk_xdef_prop_stridx(ctx, i_arg, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_WC);
-
- /*
- * Init argument related properties
- */
-
- /* step 11 */
- idx = num_stack_args - 1;
- while (idx >= 0) {
- DUK_DDD(DUK_DDDPRINT("arg idx %ld, argbase=%ld, argidx=%ld",
- (long) idx, (long) i_argbase, (long) (i_argbase + idx)));
-
- DUK_DDD(DUK_DDDPRINT("define arguments[%ld]=arg", (long) idx));
- duk_dup(ctx, i_argbase + idx);
- duk_xdef_prop_index_wec(ctx, i_arg, (duk_uarridx_t) idx);
- DUK_DDD(DUK_DDDPRINT("defined arguments[%ld]=arg", (long) idx));
-
- /* step 11.c is relevant only if non-strict (checked in 11.c.ii) */
- if (!DUK_HOBJECT_HAS_STRICT(func) && idx < n_formals) {
- DUK_ASSERT(formals != NULL);
-
- DUK_DDD(DUK_DDDPRINT("strict function, index within formals (%ld < %ld)",
- (long) idx, (long) n_formals));
-
- duk_get_prop_index(ctx, i_formals, idx);
- DUK_ASSERT(duk_is_string(ctx, -1));
-
- duk_dup(ctx, -1); /* [ ... name name ] */
-
- if (!duk_has_prop(ctx, i_mappednames)) {
- /* steps 11.c.ii.1 - 11.c.ii.4, but our internal book-keeping
- * differs from the reference model
- */
-
- /* [ ... name ] */
-
- need_map = 1;
-
- DUK_DDD(DUK_DDDPRINT("set mappednames[%s]=%ld",
- (const char *) duk_get_string(ctx, -1),
- (long) idx));
- duk_dup(ctx, -1); /* name */
- duk_push_uint(ctx, (duk_uint_t) idx); /* index */
- duk_to_string(ctx, -1);
- duk_xdef_prop_wec(ctx, i_mappednames); /* out of spec, must be configurable */
-
- DUK_DDD(DUK_DDDPRINT("set map[%ld]=%s",
- (long) idx,
- duk_get_string(ctx, -1)));
- duk_dup(ctx, -1); /* name */
- duk_xdef_prop_index_wec(ctx, i_map, (duk_uarridx_t) idx); /* out of spec, must be configurable */
- } else {
- /* duk_has_prop() popped the second 'name' */
- }
-
- /* [ ... name ] */
- duk_pop(ctx); /* pop 'name' */
- }
-
- idx--;
- }
-
- DUK_DDD(DUK_DDDPRINT("actual arguments processed"));
-
- /* step 12 */
- if (need_map) {
- DUK_DDD(DUK_DDDPRINT("adding 'map' and 'varenv' to arguments object"));
-
- /* should never happen for a strict callee */
- DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(func));
-
- duk_dup(ctx, i_map);
- duk_xdef_prop_stridx(ctx, i_arg, DUK_STRIDX_INT_MAP, DUK_PROPDESC_FLAGS_NONE); /* out of spec, don't care */
-
- /* The variable environment for magic variable bindings needs to be
- * given by the caller and recorded in the arguments object.
- *
- * See E5 Section 10.6, the creation of setters/getters.
- *
- * The variable environment also provides access to the callee, so
- * an explicit (internal) callee property is not needed.
- */
-
- duk_push_hobject(ctx, varenv);
- duk_xdef_prop_stridx(ctx, i_arg, DUK_STRIDX_INT_VARENV, DUK_PROPDESC_FLAGS_NONE); /* out of spec, don't care */
- }
-
- /* steps 13-14 */
- if (DUK_HOBJECT_HAS_STRICT(func)) {
- /* Callee/caller are throwers and are not deletable etc. They
- * could be implemented as virtual properties, but currently
- * there is no support for virtual properties which are accessors
- * (only plain virtual properties). This would not be difficult
- * to change in duk_hobject_props, but we can make the throwers
- * normal, concrete properties just as easily.
- *
- * Note that the specification requires that the *same* thrower
- * built-in object is used here! See E5 Section 10.6 main
- * algoritm, step 14, and Section 13.2.3 which describes the
- * thrower. See test case test-arguments-throwers.js.
- */
-
- DUK_DDD(DUK_DDDPRINT("strict function, setting caller/callee to throwers"));
-
- duk_xdef_prop_stridx_thrower(ctx, i_arg, DUK_STRIDX_CALLER, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx_thrower(ctx, i_arg, DUK_STRIDX_CALLEE, DUK_PROPDESC_FLAGS_NONE);
- } else {
- DUK_DDD(DUK_DDDPRINT("non-strict function, setting callee to actual value"));
- duk_push_hobject(ctx, func);
- duk_xdef_prop_stridx(ctx, i_arg, DUK_STRIDX_CALLEE, DUK_PROPDESC_FLAGS_WC);
- }
-
- /* set exotic behavior only after we're done */
- if (need_map) {
- /* Exotic behaviors are only enabled for arguments objects
- * which have a parameter map (see E5 Section 10.6 main
- * algorithm, step 12).
- *
- * In particular, a non-strict arguments object with no
- * mapped formals does *NOT* get exotic behavior, even
- * for e.g. "caller" property. This seems counterintuitive
- * but seems to be the case.
- */
-
- /* cannot be strict (never mapped variables) */
- DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(func));
-
- DUK_DDD(DUK_DDDPRINT("enabling exotic behavior for arguments object"));
- DUK_HOBJECT_SET_EXOTIC_ARGUMENTS(arg);
- } else {
- DUK_DDD(DUK_DDDPRINT("not enabling exotic behavior for arguments object"));
- }
-
- DUK_DDD(DUK_DDDPRINT("final arguments related objects: "
- "arguments at index %ld -> %!O "
- "map at index %ld -> %!O "
- "mappednames at index %ld -> %!O",
- (long) i_arg, (duk_heaphdr *) duk_get_hobject(ctx, i_arg),
- (long) i_map, (duk_heaphdr *) duk_get_hobject(ctx, i_map),
- (long) i_mappednames, (duk_heaphdr *) duk_get_hobject(ctx, i_mappednames)));
-
- /* [ args(n) [crud] formals arguments map mappednames ] */
-
- duk_pop_2(ctx);
- duk_remove(ctx, -2);
-
- /* [ args [crud] arguments ] */
-}
-
-/* Helper for creating the arguments object and adding it to the env record
- * on top of the value stack. This helper has a very strict dependency on
- * the shape of the input stack.
- */
-DUK_LOCAL void duk__handle_createargs_for_call(duk_hthread *thr,
- duk_hobject *func,
- duk_hobject *env,
- duk_idx_t num_stack_args) {
- duk_context *ctx = (duk_context *) thr;
-
- DUK_DDD(DUK_DDDPRINT("creating arguments object for function call"));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_CREATEARGS(func));
- DUK_ASSERT(duk_get_top(ctx) >= num_stack_args + 1);
-
- /* [ ... arg1 ... argN envobj ] */
-
- duk__create_arguments_object(thr,
- func,
- env,
- duk_get_top(ctx) - num_stack_args - 1, /* idx_argbase */
- num_stack_args);
-
- /* [ ... arg1 ... argN envobj argobj ] */
-
- duk_xdef_prop_stridx(ctx,
- -2,
- DUK_STRIDX_LC_ARGUMENTS,
- DUK_HOBJECT_HAS_STRICT(func) ? DUK_PROPDESC_FLAGS_E : /* strict: non-deletable, non-writable */
- DUK_PROPDESC_FLAGS_WE); /* non-strict: non-deletable, writable */
- /* [ ... arg1 ... argN envobj ] */
-}
-
-/*
- * Helper for handling a "bound function" chain when a call is being made.
- *
- * Follows the bound function chain until a non-bound function is found.
- * Prepends the bound arguments to the value stack (at idx_func + 2),
- * updating 'num_stack_args' in the process. The 'this' binding is also
- * updated if necessary (at idx_func + 1). Note that for constructor calls
- * the 'this' binding is never updated by [[BoundThis]].
- *
- * XXX: bound function chains could be collapsed at bound function creation
- * time so that each bound function would point directly to a non-bound
- * function. This would make call time handling much easier.
- */
-
-DUK_LOCAL void duk__handle_bound_chain_for_call(duk_hthread *thr,
- duk_idx_t idx_func,
- duk_idx_t *p_num_stack_args, /* may be changed by call */
- duk_bool_t is_constructor_call) {
- duk_context *ctx = (duk_context *) thr;
- duk_idx_t num_stack_args;
- duk_tval *tv_func;
- duk_hobject *func;
- duk_uint_t sanity;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(p_num_stack_args != NULL);
-
- /* On entry, item at idx_func is a bound, non-lightweight function,
- * but we don't rely on that below.
- */
-
- num_stack_args = *p_num_stack_args;
-
- sanity = DUK_HOBJECT_BOUND_CHAIN_SANITY;
- do {
- duk_idx_t i, len;
-
- tv_func = duk_require_tval(ctx, idx_func);
- DUK_ASSERT(tv_func != NULL);
-
- if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) {
- /* Lightweight function: never bound, so terminate. */
- break;
- } else if (DUK_TVAL_IS_OBJECT(tv_func)) {
- func = DUK_TVAL_GET_OBJECT(tv_func);
- if (!DUK_HOBJECT_HAS_BOUND(func)) {
- /* Normal non-bound function. */
- break;
- }
- } else {
- /* Function.prototype.bind() should never let this happen,
- * ugly error message is enough.
- */
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- }
- DUK_ASSERT(DUK_TVAL_GET_OBJECT(tv_func) != NULL);
-
- /* XXX: this could be more compact by accessing the internal properties
- * directly as own properties (they cannot be inherited, and are not
- * externally visible).
- */
-
- DUK_DDD(DUK_DDDPRINT("bound function encountered, ptr=%p, num_stack_args=%ld: %!T",
- (void *) DUK_TVAL_GET_OBJECT(tv_func), (long) num_stack_args, tv_func));
-
- /* [ ... func this arg1 ... argN ] */
-
- if (is_constructor_call) {
- /* See: tests/ecmascript/test-spec-bound-constructor.js */
- DUK_DDD(DUK_DDDPRINT("constructor call: don't update this binding"));
- } else {
- duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_THIS);
- duk_replace(ctx, idx_func + 1); /* idx_this = idx_func + 1 */
- }
-
- /* [ ... func this arg1 ... argN ] */
-
- /* XXX: duk_get_length? */
- duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_ARGS); /* -> [ ... func this arg1 ... argN _Args ] */
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_LENGTH); /* -> [ ... func this arg1 ... argN _Args length ] */
- len = (duk_idx_t) duk_require_int(ctx, -1);
- duk_pop(ctx);
- for (i = 0; i < len; i++) {
- /* XXX: very slow - better to bulk allocate a gap, and copy
- * from args_array directly (we know it has a compact array
- * part, etc).
- */
-
- /* [ ... func this <some bound args> arg1 ... argN _Args ] */
- duk_get_prop_index(ctx, -1, i);
- duk_insert(ctx, idx_func + 2 + i); /* idx_args = idx_func + 2 */
- }
- num_stack_args += len; /* must be updated to work properly (e.g. creation of 'arguments') */
- duk_pop(ctx);
-
- /* [ ... func this <bound args> arg1 ... argN ] */
-
- duk_get_prop_stridx(ctx, idx_func, DUK_STRIDX_INT_TARGET);
- duk_replace(ctx, idx_func); /* replace in stack */
-
- DUK_DDD(DUK_DDDPRINT("bound function handled, num_stack_args=%ld, idx_func=%ld, curr func=%!T",
- (long) num_stack_args, (long) idx_func, duk_get_tval(ctx, idx_func)));
- } while (--sanity > 0);
-
- if (sanity == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_BOUND_CHAIN_LIMIT);
- }
-
- DUK_DDD(DUK_DDDPRINT("final non-bound function is: %!T", duk_get_tval(ctx, idx_func)));
-
-#if defined(DUK_USE_ASSERTIONS)
- tv_func = duk_require_tval(ctx, idx_func);
- DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_func) || DUK_TVAL_IS_OBJECT(tv_func));
- if (DUK_TVAL_IS_OBJECT(tv_func)) {
- func = DUK_TVAL_GET_OBJECT(tv_func);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func) ||
- DUK_HOBJECT_HAS_NATIVEFUNCTION(func));
- }
-#endif
-
- /* write back */
- *p_num_stack_args = num_stack_args;
-}
-
-/*
- * Helper for setting up var_env and lex_env of an activation,
- * assuming it does NOT have the DUK_HOBJECT_FLAG_NEWENV flag.
- */
-
-DUK_LOCAL void duk__handle_oldenv_for_call(duk_hthread *thr,
- duk_hobject *func,
- duk_activation *act) {
- duk_tval *tv;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(act != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV(func));
- DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(func));
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_LEXENV(thr));
- if (tv) {
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(DUK_TVAL_GET_OBJECT(tv)));
- act->lex_env = DUK_TVAL_GET_OBJECT(tv);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_VARENV(thr));
- if (tv) {
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(DUK_TVAL_GET_OBJECT(tv)));
- act->var_env = DUK_TVAL_GET_OBJECT(tv);
- } else {
- act->var_env = act->lex_env;
- }
- } else {
- act->lex_env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- act->var_env = act->lex_env;
- }
-
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, act->lex_env);
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, act->var_env);
-}
-
-/*
- * Helper for updating callee 'caller' property.
- */
-
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
-DUK_LOCAL void duk__update_func_caller_prop(duk_hthread *thr, duk_hobject *func) {
- duk_tval *tv_caller;
- duk_hobject *h_tmp;
- duk_activation *act_callee;
- duk_activation *act_caller;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func)); /* bound chain resolved */
- DUK_ASSERT(thr->callstack_top >= 1);
-
- if (DUK_HOBJECT_HAS_STRICT(func)) {
- /* Strict functions don't get their 'caller' updated. */
- return;
- }
-
- act_callee = thr->callstack + thr->callstack_top - 1;
- act_caller = (thr->callstack_top >= 2 ? act_callee - 1 : NULL);
-
- /* XXX: check .caller writability? */
-
- /* Backup 'caller' property and update its value. */
- tv_caller = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_CALLER(thr));
- if (tv_caller) {
- /* If caller is global/eval code, 'caller' should be set to
- * 'null'.
- *
- * XXX: there is no exotic flag to infer this correctly now.
- * The NEWENV flag is used now which works as intended for
- * everything (global code, non-strict eval code, and functions)
- * except strict eval code. Bound functions are never an issue
- * because 'func' has been resolved to a non-bound function.
- */
-
- if (act_caller) {
- /* act_caller->func may be NULL in some finalization cases,
- * just treat like we don't know the caller.
- */
- if (act_caller->func && !DUK_HOBJECT_HAS_NEWENV(act_caller->func)) {
- /* Setting to NULL causes 'caller' to be set to
- * 'null' as desired.
- */
- act_caller = NULL;
- }
- }
-
- if (DUK_TVAL_IS_OBJECT(tv_caller)) {
- h_tmp = DUK_TVAL_GET_OBJECT(tv_caller);
- DUK_ASSERT(h_tmp != NULL);
- act_callee->prev_caller = h_tmp;
-
- /* Previous value doesn't need refcount changes because its ownership
- * is transferred to prev_caller.
- */
-
- if (act_caller) {
- DUK_ASSERT(act_caller->func != NULL);
- DUK_TVAL_SET_OBJECT(tv_caller, act_caller->func);
- DUK_TVAL_INCREF(thr, tv_caller);
- } else {
- DUK_TVAL_SET_NULL(tv_caller); /* no incref */
- }
- } else {
- /* 'caller' must only take on 'null' or function value */
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_caller));
- DUK_ASSERT(act_callee->prev_caller == NULL);
- if (act_caller && act_caller->func) {
- /* Tolerate act_caller->func == NULL which happens in
- * some finalization cases; treat like unknown caller.
- */
- DUK_TVAL_SET_OBJECT(tv_caller, act_caller->func);
- DUK_TVAL_INCREF(thr, tv_caller);
- } else {
- DUK_TVAL_SET_NULL(tv_caller); /* no incref */
- }
- }
- }
-}
-#endif /* DUK_USE_NONSTD_FUNC_CALLER_PROPERTY */
-
-/*
- * Determine the effective 'this' binding and coerce the current value
- * on the valstack to the effective one (in-place, at idx_this).
- *
- * The current this value in the valstack (at idx_this) represents either:
- * - the caller's requested 'this' binding; or
- * - a 'this' binding accumulated from the bound function chain
- *
- * The final 'this' binding for the target function may still be
- * different, and is determined as described in E5 Section 10.4.3.
- *
- * For global and eval code (E5 Sections 10.4.1 and 10.4.2), we assume
- * that the caller has provided the correct 'this' binding explicitly
- * when calling, i.e.:
- *
- * - global code: this=global object
- * - direct eval: this=copy from eval() caller's this binding
- * - other eval: this=global object
- *
- * Note: this function may cause a recursive function call with arbitrary
- * side effects, because ToObject() may be called.
- */
-
-DUK_LOCAL void duk__coerce_effective_this_binding(duk_hthread *thr,
- duk_hobject *func,
- duk_idx_t idx_this) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_this;
- duk_hobject *obj_global;
-
- if (func == NULL || DUK_HOBJECT_HAS_STRICT(func)) {
- /* Lightfuncs are always considered strict. */
- DUK_DDD(DUK_DDDPRINT("this binding: strict -> use directly"));
- return;
- }
-
- /* XXX: byte offset */
- tv_this = thr->valstack_bottom + idx_this;
- switch (DUK_TVAL_GET_TAG(tv_this)) {
- case DUK_TAG_OBJECT:
- case DUK_TAG_LIGHTFUNC: /* lightfuncs are treated like objects and not coerced */
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, object -> use directly"));
- break;
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL:
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, undefined/null -> use global object"));
- obj_global = thr->builtins[DUK_BIDX_GLOBAL];
- /* XXX: avoid this check somehow */
- if (DUK_LIKELY(obj_global != NULL)) {
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */
- DUK_TVAL_SET_OBJECT(tv_this, obj_global);
- DUK_HOBJECT_INCREF(thr, obj_global);
- } else {
- /* This may only happen if built-ins are being "torn down".
- * This behavior is out of specification scope.
- */
- DUK_D(DUK_DPRINT("this binding: wanted to use global object, but it is NULL -> using undefined instead"));
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv_this)); /* no need to decref previous value */
- DUK_TVAL_SET_UNDEFINED(tv_this); /* nothing to incref */
- }
- break;
- default:
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_this));
- DUK_DDD(DUK_DDDPRINT("this binding: non-strict, not object/undefined/null -> use ToObject(value)"));
- duk_to_object(ctx, idx_this); /* may have side effects */
- break;
- }
-}
-
-/*
- * Shared helper for non-bound func lookup.
- *
- * Returns duk_hobject * to the final non-bound function (NULL for lightfunc).
- */
-
-DUK_LOCAL duk_hobject *duk__nonbound_func_lookup(duk_context *ctx,
- duk_idx_t idx_func,
- duk_idx_t *out_num_stack_args,
- duk_tval **out_tv_func,
- duk_small_uint_t call_flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_tval *tv_func;
- duk_hobject *func;
-
- for (;;) {
- /* Use loop to minimize code size of relookup after bound function case */
- tv_func = DUK_GET_TVAL_POSIDX(ctx, idx_func);
- DUK_ASSERT(tv_func != NULL);
-
- if (DUK_TVAL_IS_OBJECT(tv_func)) {
- func = DUK_TVAL_GET_OBJECT(tv_func);
- if (!DUK_HOBJECT_IS_CALLABLE(func)) {
- goto not_callable_error;
- }
- if (DUK_HOBJECT_HAS_BOUND(func)) {
- duk__handle_bound_chain_for_call(thr, idx_func, out_num_stack_args, call_flags & DUK_CALL_FLAG_CONSTRUCTOR_CALL);
-
- /* The final object may be a normal function or a lightfunc.
- * We need to re-lookup tv_func because it may have changed
- * (also value stack may have been resized). Loop again to
- * do that; we're guaranteed not to come here again.
- */
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(duk_require_tval(ctx, idx_func)) ||
- DUK_TVAL_IS_LIGHTFUNC(duk_require_tval(ctx, idx_func)));
- continue;
- }
- } else if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) {
- func = NULL;
- } else {
- goto not_callable_error;
- }
- break;
- }
-
- DUK_ASSERT((DUK_TVAL_IS_OBJECT(tv_func) && DUK_HOBJECT_IS_CALLABLE(DUK_TVAL_GET_OBJECT(tv_func))) ||
- DUK_TVAL_IS_LIGHTFUNC(tv_func));
- DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(func == NULL || (DUK_HOBJECT_IS_COMPILEDFUNCTION(func) ||
- DUK_HOBJECT_IS_NATIVEFUNCTION(func)));
-
- *out_tv_func = tv_func;
- return func;
-
- not_callable_error:
- DUK_ASSERT(tv_func != NULL);
-#if defined(DUK_USE_PARANOID_ERRORS)
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE);
-#else
- DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "%s not callable", duk_push_string_tval_readable(ctx, tv_func));
-#endif
- DUK_UNREACHABLE();
- return NULL; /* never executed */
-}
-
-/*
- * Value stack resize and stack top adjustment helper.
- *
- * XXX: This should all be merged to duk_valstack_resize_raw().
- */
-
-DUK_LOCAL void duk__adjust_valstack_and_top(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_idx_t idx_args,
- duk_idx_t nregs,
- duk_idx_t nargs,
- duk_hobject *func) {
- duk_context *ctx = (duk_context *) thr;
- duk_size_t vs_min_size;
- duk_bool_t adjusted_top = 0;
-
- vs_min_size = (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
- idx_args; /* bottom of new func */
-
- if (nregs >= 0) {
- DUK_ASSERT(nargs >= 0);
- DUK_ASSERT(nregs >= nargs);
- vs_min_size += nregs;
- } else {
- /* 'func' wants stack "as is" */
- vs_min_size += num_stack_args; /* num entries of new func at entry */
- }
- if (func == NULL || DUK_HOBJECT_IS_NATIVEFUNCTION(func)) {
- vs_min_size += DUK_VALSTACK_API_ENTRY_MINIMUM; /* Duktape/C API guaranteed entries (on top of args) */
- }
- vs_min_size += DUK_VALSTACK_INTERNAL_EXTRA; /* + spare */
-
- /* XXX: We can't resize the value stack to a size smaller than the
- * current top, so the order of the resize and adjusting the stack
- * top depends on the current vs. final size of the value stack.
- * The operations could be combined to avoid this, but the proper
- * fix is to only grow the value stack on a function call, and only
- * shrink it (without throwing if the shrink fails) on function
- * return.
- */
-
- if (vs_min_size < (duk_size_t) (thr->valstack_top - thr->valstack)) {
- DUK_DDD(DUK_DDDPRINT(("final size smaller, set top before resize")));
-
- DUK_ASSERT(nregs >= 0); /* can't happen when keeping current stack size */
- duk_set_top(ctx, idx_args + nargs); /* clamp anything above nargs */
- duk_set_top(ctx, idx_args + nregs); /* extend with undefined */
- adjusted_top = 1;
- }
-
- (void) duk_valstack_resize_raw((duk_context *) thr,
- vs_min_size,
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
- 0 /* no compact */ |
- DUK_VSRESIZE_FLAG_THROW);
-
- if (!adjusted_top) {
- if (nregs >= 0) {
- DUK_ASSERT(nregs >= nargs);
- duk_set_top(ctx, idx_args + nargs); /* clamp anything above nargs */
- duk_set_top(ctx, idx_args + nregs); /* extend with undefined */
- }
- }
-}
-
-/*
- * Manipulate value stack so that exactly 'num_stack_rets' return
- * values are at 'idx_retbase' in every case, assuming there are
- * 'rc' return values on top of stack.
- *
- * This is a bit tricky, because the called C function operates in
- * the same activation record and may have e.g. popped the stack
- * empty (below idx_retbase).
- */
-
-DUK_LOCAL void duk__safe_call_adjust_valstack(duk_hthread *thr, duk_idx_t idx_retbase, duk_idx_t num_stack_rets, duk_idx_t num_actual_rets) {
- duk_context *ctx = (duk_context *) thr;
- duk_idx_t idx_rcbase;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(idx_retbase >= 0);
- DUK_ASSERT(num_stack_rets >= 0);
- DUK_ASSERT(num_actual_rets >= 0);
-
- idx_rcbase = duk_get_top(ctx) - num_actual_rets; /* base of known return values */
-
- DUK_DDD(DUK_DDDPRINT("adjust valstack after func call: "
- "num_stack_rets=%ld, num_actual_rets=%ld, stack_top=%ld, idx_retbase=%ld, idx_rcbase=%ld",
- (long) num_stack_rets, (long) num_actual_rets, (long) duk_get_top(ctx),
- (long) idx_retbase, (long) idx_rcbase));
-
- DUK_ASSERT(idx_rcbase >= 0); /* caller must check */
-
- /* Ensure space for final configuration (idx_retbase + num_stack_rets)
- * and intermediate configurations.
- */
- duk_require_stack_top(ctx,
- (idx_rcbase > idx_retbase ? idx_rcbase : idx_retbase) +
- num_stack_rets);
-
- /* Chop extra retvals away / extend with undefined. */
- duk_set_top(ctx, idx_rcbase + num_stack_rets);
-
- if (idx_rcbase >= idx_retbase) {
- duk_idx_t count = idx_rcbase - idx_retbase;
- duk_idx_t i;
-
- DUK_DDD(DUK_DDDPRINT("elements at/after idx_retbase have enough to cover func retvals "
- "(idx_retbase=%ld, idx_rcbase=%ld)", (long) idx_retbase, (long) idx_rcbase));
-
- /* nuke values at idx_retbase to get the first retval (initially
- * at idx_rcbase) to idx_retbase
- */
-
- DUK_ASSERT(count >= 0);
-
- for (i = 0; i < count; i++) {
- /* XXX: inefficient; block remove primitive */
- duk_remove(ctx, idx_retbase);
- }
- } else {
- duk_idx_t count = idx_retbase - idx_rcbase;
- duk_idx_t i;
-
- DUK_DDD(DUK_DDDPRINT("not enough elements at/after idx_retbase to cover func retvals "
- "(idx_retbase=%ld, idx_rcbase=%ld)", (long) idx_retbase, (long) idx_rcbase));
-
- /* insert 'undefined' values at idx_rcbase to get the
- * return values to idx_retbase
- */
-
- DUK_ASSERT(count > 0);
-
- for (i = 0; i < count; i++) {
- /* XXX: inefficient; block insert primitive */
- duk_push_undefined(ctx);
- duk_insert(ctx, idx_rcbase);
- }
- }
-}
-
-/*
- * Misc shared helpers.
- */
-
-/* Get valstack index for the func argument or throw if insane stack. */
-DUK_LOCAL duk_idx_t duk__get_idx_func(duk_hthread *thr, duk_idx_t num_stack_args) {
- duk_size_t off_stack_top;
- duk_size_t off_stack_args;
- duk_size_t off_stack_all;
- duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
-
- /* Argument validation and func/args offset. */
- off_stack_top = (duk_size_t) ((duk_uint8_t *) thr->valstack_top - (duk_uint8_t *) thr->valstack_bottom);
- off_stack_args = (duk_size_t) ((duk_size_t) num_stack_args * sizeof(duk_tval));
- off_stack_all = off_stack_args + 2 * sizeof(duk_tval);
- if (DUK_UNLIKELY(off_stack_all > off_stack_top)) {
- /* Since stack indices are not reliable, we can't do anything useful
- * here. Invoke the existing setjmp catcher, or if it doesn't exist,
- * call the fatal error handler.
- */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- return 0;
- }
- idx_func = (duk_idx_t) ((off_stack_top - off_stack_all) / sizeof(duk_tval));
- return idx_func;
-}
-
-/*
- * duk_handle_call_protected() and duk_handle_call_unprotected():
- * call into a Duktape/C or an Ecmascript function from any state.
- *
- * Input stack (thr):
- *
- * [ func this arg1 ... argN ]
- *
- * Output stack (thr):
- *
- * [ retval ] (DUK_EXEC_SUCCESS)
- * [ errobj ] (DUK_EXEC_ERROR (normal error), protected call)
- *
- * Even when executing a protected call an error may be thrown in rare cases
- * such as an insane num_stack_args argument. If there is no catchpoint for
- * such errors, the fatal error handler is called.
- *
- * The error handling path should be error free, even for out-of-memory
- * errors, to ensure safe sandboxing. (As of Duktape 1.4.0 this is not
- * yet the case, see XXX notes below.)
- */
-
-DUK_INTERNAL duk_int_t duk_handle_call_protected(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_small_uint_t call_flags) {
- duk_context *ctx;
- duk_size_t entry_valstack_bottom_index;
- duk_size_t entry_valstack_end;
- duk_size_t entry_callstack_top;
- duk_size_t entry_catchstack_top;
- duk_int_t entry_call_recursion_depth;
- duk_hthread *entry_curr_thread;
- duk_uint_fast8_t entry_thread_state;
- duk_instr_t **entry_ptr_curr_pc;
- duk_jmpbuf *old_jmpbuf_ptr = NULL;
- duk_jmpbuf our_jmpbuf;
- duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
-
- /* XXX: Multiple tv_func lookups are now avoided by making a local
- * copy of tv_func. Another approach would be to compute an offset
- * for tv_func from valstack bottom and recomputing the tv_func
- * pointer quickly as valstack + offset instead of calling duk_get_tval().
- */
-
- ctx = (duk_context *) thr;
- DUK_UNREF(ctx);
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(num_stack_args >= 0);
- /* XXX: currently NULL allocations are not supported; remove if later allowed */
- DUK_ASSERT(thr->valstack != NULL);
- DUK_ASSERT(thr->callstack != NULL);
- DUK_ASSERT(thr->catchstack != NULL);
-
- /* Argument validation and func/args offset. */
- idx_func = duk__get_idx_func(thr, num_stack_args);
-
- /* Preliminaries, required by setjmp() handler. Must be careful not
- * to throw an unintended error here.
- */
-
- entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack);
-#if defined(DUK_USE_PREFER_SIZE)
- entry_valstack_end = (duk_size_t) (thr->valstack_end - thr->valstack);
-#else
- DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size);
- entry_valstack_end = thr->valstack_size;
-#endif
- entry_callstack_top = thr->callstack_top;
- entry_catchstack_top = thr->catchstack_top;
- entry_call_recursion_depth = thr->heap->call_recursion_depth;
- entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */
- entry_thread_state = thr->state;
- entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */
-
- DUK_DD(DUK_DDPRINT("duk_handle_call_protected: thr=%p, num_stack_args=%ld, "
- "call_flags=0x%08lx (ignorerec=%ld, constructor=%ld), "
- "valstack_top=%ld, idx_func=%ld, idx_args=%ld, rec_depth=%ld/%ld, "
- "entry_valstack_bottom_index=%ld, entry_callstack_top=%ld, entry_catchstack_top=%ld, "
- "entry_call_recursion_depth=%ld, entry_curr_thread=%p, entry_thread_state=%ld",
- (void *) thr,
- (long) num_stack_args,
- (unsigned long) call_flags,
- (long) ((call_flags & DUK_CALL_FLAG_IGNORE_RECLIMIT) != 0 ? 1 : 0),
- (long) ((call_flags & DUK_CALL_FLAG_CONSTRUCTOR_CALL) != 0 ? 1 : 0),
- (long) duk_get_top(ctx),
- (long) idx_func,
- (long) (idx_func + 2),
- (long) thr->heap->call_recursion_depth,
- (long) thr->heap->call_recursion_limit,
- (long) entry_valstack_bottom_index,
- (long) entry_callstack_top,
- (long) entry_catchstack_top,
- (long) entry_call_recursion_depth,
- (void *) entry_curr_thread,
- (long) entry_thread_state));
-
- old_jmpbuf_ptr = thr->heap->lj.jmpbuf_ptr;
- thr->heap->lj.jmpbuf_ptr = &our_jmpbuf;
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- try {
-#else
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == &our_jmpbuf);
- if (DUK_SETJMP(our_jmpbuf.jb) == 0) {
-#endif
- /* Call handling and success path. Success path exit cleans
- * up almost all state.
- */
- duk__handle_call_inner(thr, num_stack_args, call_flags, idx_func);
-
- /* Success path handles */
- DUK_ASSERT(thr->heap->call_recursion_depth == entry_call_recursion_depth);
- DUK_ASSERT(thr->ptr_curr_pc == entry_ptr_curr_pc);
-
- /* Longjmp state is kept clean in success path */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_UNKNOWN);
- DUK_ASSERT(thr->heap->lj.iserror == 0);
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value1));
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2));
-
- thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr;
-
- return DUK_EXEC_SUCCESS;
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- } catch (duk_internal_exception &exc) {
-#else
- } else {
-#endif
- /* Error; error value is in heap->lj.value1. */
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- DUK_UNREF(exc);
-#endif
-
- duk__handle_call_error(thr,
- entry_valstack_bottom_index,
- entry_valstack_end,
- entry_catchstack_top,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_curr_thread,
- entry_thread_state,
- entry_ptr_curr_pc,
- idx_func,
- old_jmpbuf_ptr);
-
- /* Longjmp state is cleaned up by error handling */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_UNKNOWN);
- DUK_ASSERT(thr->heap->lj.iserror == 0);
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value1));
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2));
- return DUK_EXEC_ERROR;
- }
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- catch (std::exception &exc) {
- const char *what = exc.what();
- if (!what) {
- what = "unknown";
- }
- DUK_D(DUK_DPRINT("unexpected c++ std::exception (perhaps thrown by user code)"));
- try {
- DUK_ERROR_FMT1(thr, DUK_ERR_API_ERROR, "caught invalid c++ std::exception '%s' (perhaps thrown by user code)", what);
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ std::exception"));
- DUK_UNREF(exc);
- duk__handle_call_error(thr,
- entry_valstack_bottom_index,
- entry_valstack_end,
- entry_catchstack_top,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_curr_thread,
- entry_thread_state,
- entry_ptr_curr_pc,
- idx_func,
- old_jmpbuf_ptr);
- return DUK_EXEC_ERROR;
- }
- } catch (...) {
- DUK_D(DUK_DPRINT("unexpected c++ exception (perhaps thrown by user code)"));
- try {
- DUK_ERROR_API(thr, "caught invalid c++ exception (perhaps thrown by user code)");
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ exception"));
- DUK_UNREF(exc);
- duk__handle_call_error(thr,
- entry_valstack_bottom_index,
- entry_valstack_end,
- entry_catchstack_top,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_curr_thread,
- entry_thread_state,
- entry_ptr_curr_pc,
- idx_func,
- old_jmpbuf_ptr);
- return DUK_EXEC_ERROR;
- }
- }
-#endif
-}
-
-DUK_INTERNAL void duk_handle_call_unprotected(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_small_uint_t call_flags) {
- duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
-
- /* Argument validation and func/args offset. */
- idx_func = duk__get_idx_func(thr, num_stack_args);
-
- duk__handle_call_inner(thr, num_stack_args, call_flags, idx_func);
-}
-
-DUK_LOCAL void duk__handle_call_inner(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_small_uint_t call_flags,
- duk_idx_t idx_func) {
- duk_context *ctx;
- duk_size_t entry_valstack_bottom_index;
- duk_size_t entry_valstack_end;
- duk_size_t entry_callstack_top;
- duk_size_t entry_catchstack_top;
- duk_int_t entry_call_recursion_depth;
- duk_hthread *entry_curr_thread;
- duk_uint_fast8_t entry_thread_state;
- duk_instr_t **entry_ptr_curr_pc;
- duk_idx_t nargs; /* # argument registers target function wants (< 0 => "as is") */
- duk_idx_t nregs; /* # total registers target function wants on entry (< 0 => "as is") */
- duk_hobject *func; /* 'func' on stack (borrowed reference) */
- duk_tval *tv_func; /* duk_tval ptr for 'func' on stack (borrowed reference) or tv_func_copy */
- duk_tval tv_func_copy; /* to avoid relookups */
- duk_activation *act;
- duk_hobject *env;
- duk_ret_t rc;
-
- ctx = (duk_context *) thr;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(num_stack_args >= 0);
- /* XXX: currently NULL allocations are not supported; remove if later allowed */
- DUK_ASSERT(thr->valstack != NULL);
- DUK_ASSERT(thr->callstack != NULL);
- DUK_ASSERT(thr->catchstack != NULL);
-
- DUK_DD(DUK_DDPRINT("duk__handle_call_inner: num_stack_args=%ld, call_flags=0x%08lx, top=%ld",
- (long) num_stack_args, (long) call_flags, (long) duk_get_top(ctx)));
-
- /*
- * Store entry state.
- */
-
- entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack);
-#if defined(DUK_USE_PREFER_SIZE)
- entry_valstack_end = (duk_size_t) (thr->valstack_end - thr->valstack);
-#else
- DUK_ASSERT((duk_size_t) (thr->valstack_end - thr->valstack) == thr->valstack_size);
- entry_valstack_end = thr->valstack_size;
-#endif
- entry_callstack_top = thr->callstack_top;
- entry_catchstack_top = thr->catchstack_top;
- entry_call_recursion_depth = thr->heap->call_recursion_depth;
- entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */
- entry_thread_state = thr->state;
- entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */
-
- /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL
- * thr->ptr_curr_pc so that it's not accidentally used with an incorrect
- * activation when side effects occur.
- */
- duk_hthread_sync_and_null_currpc(thr);
-
- DUK_DD(DUK_DDPRINT("duk__handle_call_inner: thr=%p, num_stack_args=%ld, "
- "call_flags=0x%08lx (ignorerec=%ld, constructor=%ld), "
- "valstack_top=%ld, idx_func=%ld, idx_args=%ld, rec_depth=%ld/%ld, "
- "entry_valstack_bottom_index=%ld, entry_callstack_top=%ld, entry_catchstack_top=%ld, "
- "entry_call_recursion_depth=%ld, entry_curr_thread=%p, entry_thread_state=%ld",
- (void *) thr,
- (long) num_stack_args,
- (unsigned long) call_flags,
- (long) ((call_flags & DUK_CALL_FLAG_IGNORE_RECLIMIT) != 0 ? 1 : 0),
- (long) ((call_flags & DUK_CALL_FLAG_CONSTRUCTOR_CALL) != 0 ? 1 : 0),
- (long) duk_get_top(ctx),
- (long) idx_func,
- (long) (idx_func + 2),
- (long) thr->heap->call_recursion_depth,
- (long) thr->heap->call_recursion_limit,
- (long) entry_valstack_bottom_index,
- (long) entry_callstack_top,
- (long) entry_catchstack_top,
- (long) entry_call_recursion_depth,
- (void *) entry_curr_thread,
- (long) entry_thread_state));
-
-
- /*
- * Thread state check and book-keeping.
- */
-
- if (thr == thr->heap->curr_thread) {
- /* same thread */
- if (thr->state != DUK_HTHREAD_STATE_RUNNING) {
- /* should actually never happen, but check anyway */
- goto thread_state_error;
- }
- } else {
- /* different thread */
- DUK_ASSERT(thr->heap->curr_thread == NULL ||
- thr->heap->curr_thread->state == DUK_HTHREAD_STATE_RUNNING);
- if (thr->state != DUK_HTHREAD_STATE_INACTIVE) {
- goto thread_state_error;
- }
- DUK_HEAP_SWITCH_THREAD(thr->heap, thr);
- thr->state = DUK_HTHREAD_STATE_RUNNING;
-
- /* Note: multiple threads may be simultaneously in the RUNNING
- * state, but not in the same "resume chain".
- */
- }
- DUK_ASSERT(thr->heap->curr_thread == thr);
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
-
- /*
- * C call recursion depth check, which provides a reasonable upper
- * bound on maximum C stack size (arbitrary C stack growth is only
- * possible by recursive handle_call / handle_safe_call calls).
- */
-
- /* XXX: remove DUK_CALL_FLAG_IGNORE_RECLIMIT flag: there's now the
- * reclimit bump?
- */
-
- DUK_ASSERT(thr->heap->call_recursion_depth >= 0);
- DUK_ASSERT(thr->heap->call_recursion_depth <= thr->heap->call_recursion_limit);
- if (call_flags & DUK_CALL_FLAG_IGNORE_RECLIMIT) {
- DUK_DD(DUK_DDPRINT("ignoring reclimit for this call (probably an errhandler call)"));
- } else {
- if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit) {
- /* XXX: error message is a bit misleading: we reached a recursion
- * limit which is also essentially the same as a C callstack limit
- * (except perhaps with some relaxed threading assumptions).
- */
- DUK_ERROR_RANGE(thr, DUK_STR_C_CALLSTACK_LIMIT);
- }
- thr->heap->call_recursion_depth++;
- }
-
- /*
- * Check the function type, handle bound function chains, and prepare
- * parameters for the rest of the call handling. Also figure out the
- * effective 'this' binding, which replaces the current value at
- * idx_func + 1.
- *
- * If the target function is a 'bound' one, follow the chain of 'bound'
- * functions until a non-bound function is found. During this process,
- * bound arguments are 'prepended' to existing ones, and the "this"
- * binding is overridden. See E5 Section 15.3.4.5.1.
- *
- * Lightfunc detection happens here too. Note that lightweight functions
- * can be wrapped by (non-lightweight) bound functions so we must resolve
- * the bound function chain first.
- */
-
- func = duk__nonbound_func_lookup(ctx, idx_func, &num_stack_args, &tv_func, call_flags);
- DUK_TVAL_SET_TVAL(&tv_func_copy, tv_func);
- tv_func = &tv_func_copy; /* local copy to avoid relookups */
-
- DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(func == NULL || (DUK_HOBJECT_IS_COMPILEDFUNCTION(func) ||
- DUK_HOBJECT_IS_NATIVEFUNCTION(func)));
-
- duk__coerce_effective_this_binding(thr, func, idx_func + 1);
- DUK_DDD(DUK_DDDPRINT("effective 'this' binding is: %!T",
- (duk_tval *) duk_get_tval(ctx, idx_func + 1)));
-
- /* [ ... func this arg1 ... argN ] */
-
- /*
- * Setup a preliminary activation and figure out nargs/nregs.
- *
- * Don't touch valstack_bottom or valstack_top yet so that Duktape API
- * calls work normally.
- */
-
- duk_hthread_callstack_grow(thr);
-
- if (thr->callstack_top > 0) {
- /*
- * Update idx_retval of current activation.
- *
- * Although it might seem this is not necessary (bytecode executor
- * does this for Ecmascript-to-Ecmascript calls; other calls are
- * handled here), this turns out to be necessary for handling yield
- * and resume. For them, an Ecmascript-to-native call happens, and
- * the Ecmascript call's idx_retval must be set for things to work.
- */
-
- (thr->callstack + thr->callstack_top - 1)->idx_retval = entry_valstack_bottom_index + idx_func;
- }
-
- DUK_ASSERT(thr->callstack_top < thr->callstack_size);
- act = thr->callstack + thr->callstack_top;
- thr->callstack_top++;
- DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
- DUK_ASSERT(thr->valstack_top > thr->valstack_bottom); /* at least effective 'this' */
- DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUND(func));
-
- act->flags = 0;
-
- /* For now all calls except Ecma-to-Ecma calls prevent a yield. */
- act->flags |= DUK_ACT_FLAG_PREVENT_YIELD;
- if (call_flags & DUK_CALL_FLAG_CONSTRUCTOR_CALL) {
- act->flags |= DUK_ACT_FLAG_CONSTRUCT;
- }
- if (call_flags & DUK_CALL_FLAG_DIRECT_EVAL) {
- act->flags |= DUK_ACT_FLAG_DIRECT_EVAL;
- }
-
- /* These base values are never used, but if the compiler doesn't know
- * that DUK_ERROR() won't return, these are needed to silence warnings.
- * On the other hand, scan-build will warn about the values not being
- * used, so add a DUK_UNREF.
- */
- nargs = 0; DUK_UNREF(nargs);
- nregs = 0; DUK_UNREF(nregs);
-
- if (DUK_LIKELY(func != NULL)) {
- if (DUK_HOBJECT_HAS_STRICT(func)) {
- act->flags |= DUK_ACT_FLAG_STRICT;
- }
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- nargs = ((duk_hcompiledfunction *) func)->nargs;
- nregs = ((duk_hcompiledfunction *) func)->nregs;
- DUK_ASSERT(nregs >= nargs);
- } else if (DUK_HOBJECT_IS_NATIVEFUNCTION(func)) {
- /* Note: nargs (and nregs) may be negative for a native,
- * function, which indicates that the function wants the
- * input stack "as is" (i.e. handles "vararg" arguments).
- */
- nargs = ((duk_hnativefunction *) func)->nargs;
- nregs = nargs;
- } else {
- /* XXX: this should be an assert */
- DUK_ERROR_TYPE(thr, DUK_STR_NOT_CALLABLE);
- }
- } else {
- duk_small_uint_t lf_flags;
-
- DUK_ASSERT(DUK_TVAL_IS_LIGHTFUNC(tv_func));
- lf_flags = DUK_TVAL_GET_LIGHTFUNC_FLAGS(tv_func);
- nargs = DUK_LFUNC_FLAGS_GET_NARGS(lf_flags);
- if (nargs == DUK_LFUNC_NARGS_VARARGS) {
- nargs = -1; /* vararg */
- }
- nregs = nargs;
-
- act->flags |= DUK_ACT_FLAG_STRICT;
- }
-
- act->func = func; /* NULL for lightfunc */
- act->var_env = NULL;
- act->lex_env = NULL;
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- act->prev_caller = NULL;
-#endif
- act->curr_pc = NULL;
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- act->prev_line = 0;
-#endif
- act->idx_bottom = entry_valstack_bottom_index + idx_func + 2;
-#if 0 /* topmost activation idx_retval is considered garbage, no need to init */
- act->idx_retval = 0;
-#endif
- DUK_TVAL_SET_TVAL(&act->tv_func, tv_func); /* borrowed, no refcount */
-
- /* XXX: remove the preventcount and make yield walk the callstack?
- * Or perhaps just use a single flag, not a counter, faster to just
- * set and restore?
- */
- if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) {
- /* duk_hthread_callstack_unwind() will decrease this on unwind */
- thr->callstack_preventcount++;
- }
-
- /* XXX: Is this INCREF necessary? 'func' is always a borrowed
- * reference reachable through the value stack? If changed, stack
- * unwind code also needs to be fixed to match.
- */
- DUK_HOBJECT_INCREF_ALLOWNULL(thr, func); /* act->func */
-
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- if (func) {
- duk__update_func_caller_prop(thr, func);
- }
- act = thr->callstack + thr->callstack_top - 1;
-#endif
-
- /* [ ... func this arg1 ... argN ] */
-
- /*
- * Environment record creation and 'arguments' object creation.
- * Named function expression name binding is handled by the
- * compiler; the compiled function's parent env will contain
- * the (immutable) binding already.
- *
- * This handling is now identical for C and Ecmascript functions.
- * C functions always have the 'NEWENV' flag set, so their
- * environment record initialization is delayed (which is good).
- *
- * Delayed creation (on demand) is handled in duk_js_var.c.
- */
-
- DUK_ASSERT(func == NULL || !DUK_HOBJECT_HAS_BOUND(func)); /* bound function chain has already been resolved */
-
- if (DUK_LIKELY(func != NULL)) {
- if (DUK_LIKELY(DUK_HOBJECT_HAS_NEWENV(func))) {
- if (DUK_LIKELY(!DUK_HOBJECT_HAS_CREATEARGS(func))) {
- /* Use a new environment but there's no 'arguments' object;
- * delayed environment initialization. This is the most
- * common case.
- */
- DUK_ASSERT(act->lex_env == NULL);
- DUK_ASSERT(act->var_env == NULL);
- } else {
- /* Use a new environment and there's an 'arguments' object.
- * We need to initialize it right now.
- */
-
- /* third arg: absolute index (to entire valstack) of idx_bottom of new activation */
- env = duk_create_activation_environment_record(thr, func, act->idx_bottom);
- DUK_ASSERT(env != NULL);
-
- /* [ ... func this arg1 ... argN envobj ] */
-
- DUK_ASSERT(DUK_HOBJECT_HAS_CREATEARGS(func));
- duk__handle_createargs_for_call(thr, func, env, num_stack_args);
-
- /* [ ... func this arg1 ... argN envobj ] */
-
- act = thr->callstack + thr->callstack_top - 1;
- act->lex_env = env;
- act->var_env = env;
- DUK_HOBJECT_INCREF(thr, env);
- DUK_HOBJECT_INCREF(thr, env); /* XXX: incref by count (2) directly */
- duk_pop(ctx);
- }
- } else {
- /* Use existing env (e.g. for non-strict eval); cannot have
- * an own 'arguments' object (but can refer to an existing one).
- */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_CREATEARGS(func));
-
- duk__handle_oldenv_for_call(thr, func, act);
-
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
- }
- } else {
- /* Lightfuncs are always native functions and have "newenv". */
- DUK_ASSERT(act->lex_env == NULL);
- DUK_ASSERT(act->var_env == NULL);
- }
-
- /* [ ... func this arg1 ... argN ] */
-
- /*
- * Setup value stack: clamp to 'nargs', fill up to 'nregs'
- *
- * Value stack may either grow or shrink, depending on the
- * number of func registers and the number of actual arguments.
- * If nregs >= 0, func wants args clamped to 'nargs'; else it
- * wants all args (= 'num_stack_args').
- */
-
- /* XXX: optimize value stack operation */
- /* XXX: don't want to shrink allocation here */
-
- duk__adjust_valstack_and_top(thr,
- num_stack_args,
- idx_func + 2,
- nregs,
- nargs,
- func);
-
- /*
- * Determine call type, then finalize activation, shift to
- * new value stack bottom, and call the target.
- */
-
- if (func != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- /*
- * Ecmascript call
- */
-
- duk_tval *tv_ret;
- duk_tval *tv_funret;
-
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
- act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
-
- thr->valstack_bottom = thr->valstack_bottom + idx_func + 2;
- /* keep current valstack_top */
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
- /* [ ... func this | arg1 ... argN ] ('this' must precede new bottom) */
-
- /*
- * Bytecode executor call.
- *
- * Execute bytecode, handling any recursive function calls and
- * thread resumptions. Returns when execution would return from
- * the entry level activation. When the executor returns, a
- * single return value is left on the stack top.
- *
- * The only possible longjmp() is an error (DUK_LJ_TYPE_THROW),
- * other types are handled internally by the executor.
- */
-
- /* thr->ptr_curr_pc is set by bytecode executor early on entry */
- DUK_ASSERT(thr->ptr_curr_pc == NULL);
- DUK_DDD(DUK_DDDPRINT("entering bytecode execution"));
- duk_js_execute_bytecode(thr);
- DUK_DDD(DUK_DDDPRINT("returned from bytecode execution"));
-
- /* Unwind. */
-
- DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top); /* may need unwind */
- DUK_ASSERT(thr->callstack_top == entry_callstack_top + 1);
- DUK_ASSERT(thr->callstack_top == entry_callstack_top + 1);
- duk_hthread_catchstack_unwind(thr, entry_catchstack_top);
- duk_hthread_catchstack_shrink_check(thr);
- duk_hthread_callstack_unwind(thr, entry_callstack_top);
- duk_hthread_callstack_shrink_check(thr);
-
- thr->valstack_bottom = thr->valstack + entry_valstack_bottom_index;
- /* keep current valstack_top */
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom >= idx_func + 1);
-
- /* Return value handling. */
-
- /* [ ... func this (crud) retval ] */
-
- tv_ret = thr->valstack_bottom + idx_func;
- tv_funret = thr->valstack_top - 1;
-#if defined(DUK_USE_FASTINT)
- /* Explicit check for fastint downgrade. */
- DUK_TVAL_CHKFAST_INPLACE(tv_funret);
-#endif
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv_ret, tv_funret); /* side effects */
- } else {
- /*
- * Native call.
- */
-
- duk_tval *tv_ret;
- duk_tval *tv_funret;
-
- thr->valstack_bottom = thr->valstack_bottom + idx_func + 2;
- /* keep current valstack_top */
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
- DUK_ASSERT(func == NULL || ((duk_hnativefunction *) func)->func != NULL);
-
- /* [ ... func this | arg1 ... argN ] ('this' must precede new bottom) */
-
- /* For native calls must be NULL so we don't sync back */
- DUK_ASSERT(thr->ptr_curr_pc == NULL);
-
- if (func) {
- rc = ((duk_hnativefunction *) func)->func((duk_context *) thr);
- } else {
- duk_c_function funcptr = DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv_func);
- rc = funcptr((duk_context *) thr);
- }
-
- /* Automatic error throwing, retval check. */
-
- if (rc < 0) {
- duk_error_throw_from_negative_rc(thr, rc);
- DUK_UNREACHABLE();
- } else if (rc > 1) {
- DUK_ERROR_API(thr, "c function returned invalid rc");
- }
- DUK_ASSERT(rc == 0 || rc == 1);
-
- /* Unwind. */
-
- DUK_ASSERT(thr->catchstack_top == entry_catchstack_top); /* no need to unwind */
- DUK_ASSERT(thr->callstack_top == entry_callstack_top + 1);
- duk_hthread_callstack_unwind(thr, entry_callstack_top);
- duk_hthread_callstack_shrink_check(thr);
-
- thr->valstack_bottom = thr->valstack + entry_valstack_bottom_index;
- /* keep current valstack_top */
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom >= idx_func + 1);
-
- /* Return value handling. */
-
- /* XXX: should this happen in the callee's activation or after unwinding? */
- tv_ret = thr->valstack_bottom + idx_func;
- if (rc == 0) {
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv_ret); /* side effects */
- } else {
- /* [ ... func this (crud) retval ] */
- tv_funret = thr->valstack_top - 1;
-#if defined(DUK_USE_FASTINT)
- /* Explicit check for fastint downgrade. */
- DUK_TVAL_CHKFAST_INPLACE(tv_funret);
-#endif
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv_ret, tv_funret); /* side effects */
- }
- }
-
- duk_set_top(ctx, idx_func + 1); /* XXX: unnecessary, handle in adjust */
-
- /* [ ... retval ] */
-
- /* Ensure there is internal valstack spare before we exit; this may
- * throw an alloc error. The same guaranteed size must be available
- * as before the call. This is not optimal now: we store the valstack
- * allocated size during entry; this value may be higher than the
- * minimal guarantee for an application.
- */
-
- /* XXX: we should never shrink here; when we error out later, we'd
- * need to potentially grow the value stack in error unwind which could
- * cause another error.
- */
-
- (void) duk_valstack_resize_raw((duk_context *) thr,
- entry_valstack_end, /* same as during entry */
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
- DUK_VSRESIZE_FLAG_COMPACT |
- DUK_VSRESIZE_FLAG_THROW);
-
- /* Restore entry thread executor curr_pc stack frame pointer. */
- thr->ptr_curr_pc = entry_ptr_curr_pc;
-
- DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */
- thr->state = (duk_uint8_t) entry_thread_state;
-
- DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */
- (thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread != NULL) || /* other call */
- (thr->state == DUK_HTHREAD_STATE_RUNNING && thr->heap->curr_thread == thr)); /* current thread */
-
- thr->heap->call_recursion_depth = entry_call_recursion_depth;
-
- /* If the debugger is active we need to force an interrupt so that
- * debugger breakpoints are rechecked. This is important for function
- * calls caused by side effects (e.g. when doing a DUK_OP_GETPROP), see
- * GH-303. Only needed for success path, error path always causes a
- * breakpoint recheck in the executor. It would be enough to set this
- * only when returning to an Ecmascript activation, but setting the flag
- * on every return should have no ill effect.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- DUK_DD(DUK_DDPRINT("returning with debugger enabled, force interrupt"));
- DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init);
- thr->interrupt_init -= thr->interrupt_counter;
- thr->interrupt_counter = 0;
- thr->heap->dbg_force_restart = 1;
- }
-#endif
-
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
- duk__interrupt_fixup(thr, entry_curr_thread);
-#endif
-
- return;
-
- thread_state_error:
- DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "invalid thread state for call (%ld)", (long) thr->state);
- DUK_UNREACHABLE();
- return; /* never executed */
-}
-
-DUK_LOCAL void duk__handle_call_error(duk_hthread *thr,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_valstack_end,
- duk_size_t entry_catchstack_top,
- duk_size_t entry_callstack_top,
- duk_int_t entry_call_recursion_depth,
- duk_hthread *entry_curr_thread,
- duk_uint_fast8_t entry_thread_state,
- duk_instr_t **entry_ptr_curr_pc,
- duk_idx_t idx_func,
- duk_jmpbuf *old_jmpbuf_ptr) {
- duk_context *ctx;
- duk_tval *tv_ret;
-
- ctx = (duk_context *) thr;
-
- DUK_DDD(DUK_DDDPRINT("error caught during duk__handle_call_inner(): %!T",
- (duk_tval *) &thr->heap->lj.value1));
-
- /* Other longjmp types are handled by executor before propagating
- * the error here.
- */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_THROW);
- DUK_ASSERT(thr->callstack_top >= entry_callstack_top);
- DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top);
-
- /* We don't need to sync back thr->ptr_curr_pc here because
- * the bytecode executor always has a setjmp catchpoint which
- * does that before errors propagate to here.
- */
- DUK_ASSERT(thr->ptr_curr_pc == NULL);
-
- /* Restore the previous setjmp catcher so that any error in
- * error handling will propagate outwards rather than re-enter
- * the same handler. However, the error handling path must be
- * designed to be error free so that sandboxing guarantees are
- * reliable, see e.g. https://github.com/svaarala/duktape/issues/476.
- */
- thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr;
-
- /* XXX: callstack unwind may now throw an error when closing
- * scopes; this is a sandboxing issue, described in:
- * https://github.com/svaarala/duktape/issues/476
- */
- duk_hthread_catchstack_unwind(thr, entry_catchstack_top);
- duk_hthread_catchstack_shrink_check(thr);
- duk_hthread_callstack_unwind(thr, entry_callstack_top);
- duk_hthread_callstack_shrink_check(thr);
-
- thr->valstack_bottom = thr->valstack + entry_valstack_bottom_index;
- tv_ret = thr->valstack_bottom + idx_func; /* XXX: byte offset? */
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv_ret, &thr->heap->lj.value1); /* side effects */
-#if defined(DUK_USE_FASTINT)
- /* Explicit check for fastint downgrade. */
- DUK_TVAL_CHKFAST_INPLACE(tv_ret);
-#endif
- duk_set_top(ctx, idx_func + 1); /* XXX: could be eliminated with valstack adjust */
-
- /* [ ... errobj ] */
-
- /* Ensure there is internal valstack spare before we exit; this may
- * throw an alloc error. The same guaranteed size must be available
- * as before the call. This is not optimal now: we store the valstack
- * allocated size during entry; this value may be higher than the
- * minimal guarantee for an application.
- */
-
- /* XXX: this needs to be reworked so that we never shrink the value
- * stack on function entry so that we never need to grow it here.
- * Needing to grow here is a sandboxing issue because we need to
- * allocate which may cause an error in the error handling path
- * and thus propagate an error out of a protected call.
- */
-
- (void) duk_valstack_resize_raw((duk_context *) thr,
- entry_valstack_end, /* same as during entry */
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
- DUK_VSRESIZE_FLAG_COMPACT |
- DUK_VSRESIZE_FLAG_THROW);
-
-
- /* These are just convenience "wiping" of state. Side effects should
- * not be an issue here: thr->heap and thr->heap->lj have a stable
- * pointer. Finalizer runs etc capture even out-of-memory errors so
- * nothing should throw here.
- */
- thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN;
- thr->heap->lj.iserror = 0;
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
-
- /* Restore entry thread executor curr_pc stack frame pointer. */
- thr->ptr_curr_pc = entry_ptr_curr_pc;
-
- DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */
- thr->state = (duk_uint8_t) entry_thread_state;
-
- DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */
- (thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread != NULL) || /* other call */
- (thr->state == DUK_HTHREAD_STATE_RUNNING && thr->heap->curr_thread == thr)); /* current thread */
-
- thr->heap->call_recursion_depth = entry_call_recursion_depth;
-
- /* If the debugger is active we need to force an interrupt so that
- * debugger breakpoints are rechecked. This is important for function
- * calls caused by side effects (e.g. when doing a DUK_OP_GETPROP), see
- * GH-303. Only needed for success path, error path always causes a
- * breakpoint recheck in the executor. It would be enough to set this
- * only when returning to an Ecmascript activation, but setting the flag
- * on every return should have no ill effect.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- DUK_DD(DUK_DDPRINT("returning with debugger enabled, force interrupt"));
- DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init);
- thr->interrupt_init -= thr->interrupt_counter;
- thr->interrupt_counter = 0;
- thr->heap->dbg_force_restart = 1;
- }
-#endif
-
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
- duk__interrupt_fixup(thr, entry_curr_thread);
-#endif
-}
-
-/*
- * duk_handle_safe_call(): make a "C protected call" within the
- * current activation.
- *
- * The allowed thread states for making a call are the same as for
- * duk_handle_call_xxx().
- *
- * Error handling is similar to duk_handle_call_xxx(); errors may be thrown
- * (and result in a fatal error) for insane arguments.
- */
-
-/* XXX: bump preventcount by one for the duration of this call? */
-
-DUK_INTERNAL duk_int_t duk_handle_safe_call(duk_hthread *thr,
- duk_safe_call_function func,
- duk_idx_t num_stack_args,
- duk_idx_t num_stack_rets) {
- duk_context *ctx = (duk_context *) thr;
- duk_size_t entry_valstack_bottom_index;
- duk_size_t entry_callstack_top;
- duk_size_t entry_catchstack_top;
- duk_int_t entry_call_recursion_depth;
- duk_hthread *entry_curr_thread;
- duk_uint_fast8_t entry_thread_state;
- duk_instr_t **entry_ptr_curr_pc;
- duk_jmpbuf *old_jmpbuf_ptr = NULL;
- duk_jmpbuf our_jmpbuf;
- duk_idx_t idx_retbase;
- duk_int_t retval;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
-
- /* Note: careful with indices like '-x'; if 'x' is zero, it refers to bottom */
- entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack);
- entry_callstack_top = thr->callstack_top;
- entry_catchstack_top = thr->catchstack_top;
- entry_call_recursion_depth = thr->heap->call_recursion_depth;
- entry_curr_thread = thr->heap->curr_thread; /* Note: may be NULL if first call */
- entry_thread_state = thr->state;
- entry_ptr_curr_pc = thr->ptr_curr_pc; /* may be NULL */
- idx_retbase = duk_get_top(ctx) - num_stack_args; /* Note: not a valid stack index if num_stack_args == 0 */
-
- /* Note: cannot portably debug print a function pointer, hence 'func' not printed! */
- DUK_DD(DUK_DDPRINT("duk_handle_safe_call: thr=%p, num_stack_args=%ld, num_stack_rets=%ld, "
- "valstack_top=%ld, idx_retbase=%ld, rec_depth=%ld/%ld, "
- "entry_valstack_bottom_index=%ld, entry_callstack_top=%ld, entry_catchstack_top=%ld, "
- "entry_call_recursion_depth=%ld, entry_curr_thread=%p, entry_thread_state=%ld",
- (void *) thr,
- (long) num_stack_args,
- (long) num_stack_rets,
- (long) duk_get_top(ctx),
- (long) idx_retbase,
- (long) thr->heap->call_recursion_depth,
- (long) thr->heap->call_recursion_limit,
- (long) entry_valstack_bottom_index,
- (long) entry_callstack_top,
- (long) entry_catchstack_top,
- (long) entry_call_recursion_depth,
- (void *) entry_curr_thread,
- (long) entry_thread_state));
-
- if (idx_retbase < 0) {
- /* Since stack indices are not reliable, we can't do anything useful
- * here. Invoke the existing setjmp catcher, or if it doesn't exist,
- * call the fatal error handler.
- */
-
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- }
-
- /* setjmp catchpoint setup */
-
- old_jmpbuf_ptr = thr->heap->lj.jmpbuf_ptr;
- thr->heap->lj.jmpbuf_ptr = &our_jmpbuf;
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- try {
-#else
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == &our_jmpbuf);
- if (DUK_SETJMP(our_jmpbuf.jb) == 0) {
- /* Success path. */
-#endif
- DUK_DDD(DUK_DDDPRINT("safe_call setjmp catchpoint setup complete"));
-
- duk__handle_safe_call_inner(thr,
- func,
- idx_retbase,
- num_stack_rets,
- entry_valstack_bottom_index,
- entry_callstack_top,
- entry_catchstack_top);
-
- /* Longjmp state is kept clean in success path */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_UNKNOWN);
- DUK_ASSERT(thr->heap->lj.iserror == 0);
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value1));
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2));
-
- /* Note: either pointer may be NULL (at entry), so don't assert */
- thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr;
-
- retval = DUK_EXEC_SUCCESS;
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- } catch (duk_internal_exception &exc) {
- DUK_UNREF(exc);
-#else
- } else {
- /* Error path. */
-#endif
- duk__handle_safe_call_error(thr,
- idx_retbase,
- num_stack_rets,
- entry_valstack_bottom_index,
- entry_callstack_top,
- entry_catchstack_top,
- old_jmpbuf_ptr);
-
- /* Longjmp state is cleaned up by error handling */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_UNKNOWN);
- DUK_ASSERT(thr->heap->lj.iserror == 0);
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value1));
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(&thr->heap->lj.value2));
-
- retval = DUK_EXEC_ERROR;
- }
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- catch (std::exception &exc) {
- const char *what = exc.what();
- if (!what) {
- what = "unknown";
- }
- DUK_D(DUK_DPRINT("unexpected c++ std::exception (perhaps thrown by user code)"));
- try {
- DUK_ERROR_FMT1(thr, DUK_ERR_API_ERROR, "caught invalid c++ std::exception '%s' (perhaps thrown by user code)", what);
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ std::exception"));
- DUK_UNREF(exc);
- duk__handle_safe_call_error(thr,
- idx_retbase,
- num_stack_rets,
- entry_valstack_bottom_index,
- entry_callstack_top,
- entry_catchstack_top,
- old_jmpbuf_ptr);
- retval = DUK_EXEC_ERROR;
- }
- } catch (...) {
- DUK_D(DUK_DPRINT("unexpected c++ exception (perhaps thrown by user code)"));
- try {
- DUK_ERROR_API(thr, "caught invalid c++ exception (perhaps thrown by user code)");
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ exception"));
- DUK_UNREF(exc);
- duk__handle_safe_call_error(thr,
- idx_retbase,
- num_stack_rets,
- entry_valstack_bottom_index,
- entry_callstack_top,
- entry_catchstack_top,
- old_jmpbuf_ptr);
- retval = DUK_EXEC_ERROR;
- }
- }
-#endif
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr == old_jmpbuf_ptr); /* success/error path both do this */
-
- duk__handle_safe_call_shared(thr,
- idx_retbase,
- num_stack_rets,
- entry_call_recursion_depth,
- entry_curr_thread,
- entry_thread_state,
- entry_ptr_curr_pc);
-
- return retval;
-}
-
-DUK_LOCAL void duk__handle_safe_call_inner(duk_hthread *thr,
- duk_safe_call_function func,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_callstack_top,
- duk_size_t entry_catchstack_top) {
- duk_context *ctx;
- duk_ret_t rc;
-
- DUK_ASSERT(thr != NULL);
- ctx = (duk_context *) thr;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(entry_valstack_bottom_index);
- DUK_UNREF(entry_callstack_top);
- DUK_UNREF(entry_catchstack_top);
-
- /*
- * Thread state check and book-keeping.
- */
-
- if (thr == thr->heap->curr_thread) {
- /* same thread */
- if (thr->state != DUK_HTHREAD_STATE_RUNNING) {
- /* should actually never happen, but check anyway */
- goto thread_state_error;
- }
- } else {
- /* different thread */
- DUK_ASSERT(thr->heap->curr_thread == NULL ||
- thr->heap->curr_thread->state == DUK_HTHREAD_STATE_RUNNING);
- if (thr->state != DUK_HTHREAD_STATE_INACTIVE) {
- goto thread_state_error;
- }
- DUK_HEAP_SWITCH_THREAD(thr->heap, thr);
- thr->state = DUK_HTHREAD_STATE_RUNNING;
-
- /* Note: multiple threads may be simultaneously in the RUNNING
- * state, but not in the same "resume chain".
- */
- }
-
- DUK_ASSERT(thr->heap->curr_thread == thr);
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
-
- /*
- * Recursion limit check.
- *
- * Note: there is no need for an "ignore recursion limit" flag
- * for duk_handle_safe_call now.
- */
-
- DUK_ASSERT(thr->heap->call_recursion_depth >= 0);
- DUK_ASSERT(thr->heap->call_recursion_depth <= thr->heap->call_recursion_limit);
- if (thr->heap->call_recursion_depth >= thr->heap->call_recursion_limit) {
- /* XXX: error message is a bit misleading: we reached a recursion
- * limit which is also essentially the same as a C callstack limit
- * (except perhaps with some relaxed threading assumptions).
- */
- DUK_ERROR_RANGE(thr, DUK_STR_C_CALLSTACK_LIMIT);
- }
- thr->heap->call_recursion_depth++;
-
- /*
- * Valstack spare check
- */
-
- duk_require_stack(ctx, 0); /* internal spare */
-
- /*
- * Make the C call
- */
-
- rc = func(ctx);
-
- DUK_DDD(DUK_DDDPRINT("safe_call, func rc=%ld", (long) rc));
-
- /*
- * Valstack manipulation for results.
- */
-
- /* we're running inside the caller's activation, so no change in call/catch stack or valstack bottom */
- DUK_ASSERT(thr->callstack_top == entry_callstack_top);
- DUK_ASSERT(thr->catchstack_top == entry_catchstack_top);
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT((duk_size_t) (thr->valstack_bottom - thr->valstack) == entry_valstack_bottom_index);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
- if (rc < 0) {
- duk_error_throw_from_negative_rc(thr, rc);
- }
- DUK_ASSERT(rc >= 0);
-
- if (duk_get_top(ctx) < rc) {
- DUK_ERROR_API(thr, "not enough stack values for safe_call rc");
- }
-
- DUK_ASSERT(thr->catchstack_top == entry_catchstack_top); /* no need to unwind */
- DUK_ASSERT(thr->callstack_top == entry_callstack_top);
-
- duk__safe_call_adjust_valstack(thr, idx_retbase, num_stack_rets, rc);
- return;
-
- thread_state_error:
- DUK_ERROR_FMT1(thr, DUK_ERR_TYPE_ERROR, "invalid thread state for safe_call (%ld)", (long) thr->state);
- DUK_UNREACHABLE();
-}
-
-DUK_LOCAL void duk__handle_safe_call_error(duk_hthread *thr,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_size_t entry_valstack_bottom_index,
- duk_size_t entry_callstack_top,
- duk_size_t entry_catchstack_top,
- duk_jmpbuf *old_jmpbuf_ptr) {
- duk_context *ctx;
-
- DUK_ASSERT(thr != NULL);
- ctx = (duk_context *) thr;
- DUK_ASSERT_CTX_VALID(ctx);
-
- /*
- * Error during call. The error value is at heap->lj.value1.
- *
- * The very first thing we do is restore the previous setjmp catcher.
- * This means that any error in error handling will propagate outwards
- * instead of causing a setjmp() re-entry above.
- */
-
- DUK_DDD(DUK_DDDPRINT("error caught during protected duk_handle_safe_call()"));
-
- /* Other longjmp types are handled by executor before propagating
- * the error here.
- */
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_THROW);
- DUK_ASSERT(thr->callstack_top >= entry_callstack_top);
- DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top);
-
- /* Note: either pointer may be NULL (at entry), so don't assert. */
- thr->heap->lj.jmpbuf_ptr = old_jmpbuf_ptr;
-
- DUK_ASSERT(thr->catchstack_top >= entry_catchstack_top);
- DUK_ASSERT(thr->callstack_top >= entry_callstack_top);
- duk_hthread_catchstack_unwind(thr, entry_catchstack_top);
- duk_hthread_catchstack_shrink_check(thr);
- duk_hthread_callstack_unwind(thr, entry_callstack_top);
- duk_hthread_callstack_shrink_check(thr);
- thr->valstack_bottom = thr->valstack + entry_valstack_bottom_index;
-
- /* [ ... | (crud) ] */
-
- /* XXX: space in valstack? see discussion in duk_handle_call_xxx(). */
- duk_push_tval(ctx, &thr->heap->lj.value1);
-
- /* [ ... | (crud) errobj ] */
-
- DUK_ASSERT(duk_get_top(ctx) >= 1); /* at least errobj must be on stack */
-
- /* check that the valstack has space for the final amount and any
- * intermediate space needed; this is unoptimal but should be safe
- */
- duk_require_stack_top(ctx, idx_retbase + num_stack_rets); /* final configuration */
- duk_require_stack(ctx, num_stack_rets);
-
- duk__safe_call_adjust_valstack(thr, idx_retbase, num_stack_rets, 1); /* 1 = num actual 'return values' */
-
- /* [ ... | ] or [ ... | errobj (M * undefined)] where M = num_stack_rets - 1 */
-
- /* These are just convenience "wiping" of state. Side effects should
- * not be an issue here: thr->heap and thr->heap->lj have a stable
- * pointer. Finalizer runs etc capture even out-of-memory errors so
- * nothing should throw here.
- */
- thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN;
- thr->heap->lj.iserror = 0;
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
-}
-
-DUK_LOCAL void duk__handle_safe_call_shared(duk_hthread *thr,
- duk_idx_t idx_retbase,
- duk_idx_t num_stack_rets,
- duk_int_t entry_call_recursion_depth,
- duk_hthread *entry_curr_thread,
- duk_uint_fast8_t entry_thread_state,
- duk_instr_t **entry_ptr_curr_pc) {
- duk_context *ctx;
-
- DUK_ASSERT(thr != NULL);
- ctx = (duk_context *) thr;
- DUK_ASSERT_CTX_VALID(ctx);
- DUK_UNREF(ctx);
- DUK_UNREF(idx_retbase);
- DUK_UNREF(num_stack_rets);
-
- /* Restore entry thread executor curr_pc stack frame pointer. */
- thr->ptr_curr_pc = entry_ptr_curr_pc;
-
- /* XXX: because we unwind stacks above, thr->heap->curr_thread is at
- * risk of pointing to an already freed thread. This was indeed the
- * case in test-bug-multithread-valgrind.c, until duk_handle_call()
- * was fixed to restore thr->heap->curr_thread before rethrowing an
- * uncaught error.
- */
- DUK_HEAP_SWITCH_THREAD(thr->heap, entry_curr_thread); /* may be NULL */
- thr->state = (duk_uint8_t) entry_thread_state;
-
- DUK_ASSERT((thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread == NULL) || /* first call */
- (thr->state == DUK_HTHREAD_STATE_INACTIVE && thr->heap->curr_thread != NULL) || /* other call */
- (thr->state == DUK_HTHREAD_STATE_RUNNING && thr->heap->curr_thread == thr)); /* current thread */
-
- thr->heap->call_recursion_depth = entry_call_recursion_depth;
-
- /* stack discipline consistency check */
- DUK_ASSERT(duk_get_top(ctx) == idx_retbase + num_stack_rets);
-
- /* A debugger forced interrupt check is not needed here, as
- * problematic safe calls are not caused by side effects.
- */
-
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
- duk__interrupt_fixup(thr, entry_curr_thread);
-#endif
-}
-
-/*
- * Helper for handling an Ecmascript-to-Ecmascript call or an Ecmascript
- * function (initial) Duktape.Thread.resume().
- *
- * Compared to normal calls handled by duk_handle_call(), there are a
- * bunch of differences:
- *
- * - the call is never protected
- * - there is no C recursion depth increase (hence an "ignore recursion
- * limit" flag is not applicable)
- * - instead of making the call, this helper just performs the thread
- * setup and returns; the bytecode executor then restarts execution
- * internally
- * - ecmascript functions are never 'vararg' functions (they access
- * varargs through the 'arguments' object)
- *
- * The callstack of the target contains an earlier Ecmascript call in case
- * of an Ecmascript-to-Ecmascript call (whose idx_retval is updated), or
- * is empty in case of an initial Duktape.Thread.resume().
- *
- * The first thing to do here is to figure out whether an ecma-to-ecma
- * call is actually possible. It's not always the case if the target is
- * a bound function; the final function may be native. In that case,
- * return an error so caller can fall back to a normal call path.
- */
-
-DUK_INTERNAL duk_bool_t duk_handle_ecma_call_setup(duk_hthread *thr,
- duk_idx_t num_stack_args,
- duk_small_uint_t call_flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_size_t entry_valstack_bottom_index;
- duk_idx_t idx_func; /* valstack index of 'func' and retval (relative to entry valstack_bottom) */
- duk_idx_t idx_args; /* valstack index of start of args (arg1) (relative to entry valstack_bottom) */
- duk_idx_t nargs; /* # argument registers target function wants (< 0 => never for ecma calls) */
- duk_idx_t nregs; /* # total registers target function wants on entry (< 0 => never for ecma calls) */
- duk_hobject *func; /* 'func' on stack (borrowed reference) */
- duk_tval *tv_func; /* duk_tval ptr for 'func' on stack (borrowed reference) */
- duk_activation *act;
- duk_hobject *env;
- duk_bool_t use_tailcall;
- duk_instr_t **entry_ptr_curr_pc;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(!((call_flags & DUK_CALL_FLAG_IS_RESUME) != 0 && (call_flags & DUK_CALL_FLAG_IS_TAILCALL) != 0));
-
- /* XXX: assume these? */
- DUK_ASSERT(thr->valstack != NULL);
- DUK_ASSERT(thr->callstack != NULL);
- DUK_ASSERT(thr->catchstack != NULL);
-
- /* no need to handle thread state book-keeping here */
- DUK_ASSERT((call_flags & DUK_CALL_FLAG_IS_RESUME) != 0 ||
- (thr->state == DUK_HTHREAD_STATE_RUNNING &&
- thr->heap->curr_thread == thr));
-
- /* If thr->ptr_curr_pc is set, sync curr_pc to act->pc. Then NULL
- * thr->ptr_curr_pc so that it's not accidentally used with an incorrect
- * activation when side effects occur. If we end up not making the
- * call we must restore the value.
- */
- entry_ptr_curr_pc = thr->ptr_curr_pc;
- duk_hthread_sync_and_null_currpc(thr);
-
- /* if a tail call:
- * - an Ecmascript activation must be on top of the callstack
- * - there cannot be any active catchstack entries
- */
-#if defined(DUK_USE_ASSERTIONS)
- if (call_flags & DUK_CALL_FLAG_IS_TAILCALL) {
- duk_size_t our_callstack_index;
- duk_size_t i;
-
- DUK_ASSERT(thr->callstack_top >= 1);
- our_callstack_index = thr->callstack_top - 1;
- DUK_ASSERT_DISABLE(our_callstack_index >= 0);
- DUK_ASSERT(our_callstack_index < thr->callstack_size);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + our_callstack_index) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + our_callstack_index)));
-
- /* No entry in the catchstack which would actually catch a
- * throw can refer to the callstack entry being reused.
- * There *can* be catchstack entries referring to the current
- * callstack entry as long as they don't catch (e.g. label sites).
- */
-
- for (i = 0; i < thr->catchstack_top; i++) {
- DUK_ASSERT(thr->catchstack[i].callstack_index < our_callstack_index || /* refer to callstack entries below current */
- DUK_CAT_GET_TYPE(thr->catchstack + i) == DUK_CAT_TYPE_LABEL); /* or a non-catching entry */
- }
- }
-#endif /* DUK_USE_ASSERTIONS */
-
- entry_valstack_bottom_index = (duk_size_t) (thr->valstack_bottom - thr->valstack);
- /* XXX: rework */
- idx_func = duk_normalize_index(thr, -num_stack_args - 2);
- idx_args = idx_func + 2;
-
- DUK_DD(DUK_DDPRINT("handle_ecma_call_setup: thr=%p, "
- "num_stack_args=%ld, call_flags=0x%08lx (resume=%ld, tailcall=%ld), "
- "idx_func=%ld, idx_args=%ld, entry_valstack_bottom_index=%ld",
- (void *) thr,
- (long) num_stack_args,
- (unsigned long) call_flags,
- (long) ((call_flags & DUK_CALL_FLAG_IS_RESUME) != 0 ? 1 : 0),
- (long) ((call_flags & DUK_CALL_FLAG_IS_TAILCALL) != 0 ? 1 : 0),
- (long) idx_func,
- (long) idx_args,
- (long) entry_valstack_bottom_index));
-
- if (DUK_UNLIKELY(idx_func < 0 || idx_args < 0)) {
- /* XXX: assert? compiler is responsible for this never happening */
- DUK_ERROR_API(thr, DUK_STR_INVALID_CALL_ARGS);
- }
-
- /*
- * Check the function type, handle bound function chains, and prepare
- * parameters for the rest of the call handling. Also figure out the
- * effective 'this' binding, which replaces the current value at
- * idx_func + 1.
- *
- * If the target function is a 'bound' one, follow the chain of 'bound'
- * functions until a non-bound function is found. During this process,
- * bound arguments are 'prepended' to existing ones, and the "this"
- * binding is overridden. See E5 Section 15.3.4.5.1.
- *
- * If the final target function cannot be handled by an ecma-to-ecma
- * call, return to the caller with a return value indicating this case.
- * The bound chain is resolved and the caller can resume with a plain
- * function call.
- */
-
- func = duk__nonbound_func_lookup(ctx, idx_func, &num_stack_args, &tv_func, call_flags);
- if (func == NULL || !DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- DUK_DDD(DUK_DDDPRINT("final target is a lightfunc/nativefunc, cannot do ecma-to-ecma call"));
- thr->ptr_curr_pc = entry_ptr_curr_pc;
- return 0;
- }
- /* XXX: tv_func is not actually needed */
-
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(func));
-
- duk__coerce_effective_this_binding(thr, func, idx_func + 1);
- DUK_DDD(DUK_DDDPRINT("effective 'this' binding is: %!T",
- duk_get_tval(ctx, idx_func + 1)));
-
- nargs = ((duk_hcompiledfunction *) func)->nargs;
- nregs = ((duk_hcompiledfunction *) func)->nregs;
- DUK_ASSERT(nregs >= nargs);
-
- /* [ ... func this arg1 ... argN ] */
-
- /*
- * Preliminary activation record and valstack manipulation.
- * The concrete actions depend on whether the we're dealing
- * with a tail call (reuse an existing activation), a resume,
- * or a normal call.
- *
- * The basic actions, in varying order, are:
- *
- * - Check stack size for call handling
- * - Grow call stack if necessary (non-tail-calls)
- * - Update current activation (idx_retval) if necessary
- * (non-tail, non-resume calls)
- * - Move start of args (idx_args) to valstack bottom
- * (tail calls)
- *
- * Don't touch valstack_bottom or valstack_top yet so that Duktape API
- * calls work normally.
- */
-
- /* XXX: some overlapping code; cleanup */
- use_tailcall = call_flags & DUK_CALL_FLAG_IS_TAILCALL;
-#if !defined(DUK_USE_TAILCALL)
- DUK_ASSERT(use_tailcall == 0); /* compiler ensures this */
-#endif
- if (use_tailcall) {
- /* tailcall cannot be flagged to resume calls, and a
- * previous frame must exist
- */
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT((call_flags & DUK_CALL_FLAG_IS_RESUME) == 0);
-
- act = thr->callstack + thr->callstack_top - 1;
- if (act->flags & DUK_ACT_FLAG_PREVENT_YIELD) {
- /* See: test-bug-tailcall-preventyield-assert.c. */
- DUK_DDD(DUK_DDDPRINT("tail call prevented by current activation having DUK_ACT_FLAG_PREVENTYIELD"));
- use_tailcall = 0;
- } else if (DUK_HOBJECT_HAS_NOTAIL(func)) {
- DUK_D(DUK_DPRINT("tail call prevented by function having a notail flag"));
- use_tailcall = 0;
- }
- }
-
- if (use_tailcall) {
- duk_tval *tv1, *tv2;
- duk_size_t cs_index;
- duk_int_t i_stk; /* must be signed for loop structure */
- duk_idx_t i_arg;
-
- /*
- * Tailcall handling
- *
- * Although the callstack entry is reused, we need to explicitly unwind
- * the current activation (or simulate an unwind). In particular, the
- * current activation must be closed, otherwise something like
- * test-bug-reduce-judofyr.js results. Also catchstack needs be unwound
- * because there may be non-error-catching label entries in valid tail calls.
- */
-
- DUK_DDD(DUK_DDDPRINT("is tail call, reusing activation at callstack top, at index %ld",
- (long) (thr->callstack_top - 1)));
-
- /* 'act' already set above */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(func));
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
- DUK_ASSERT((act->flags & DUK_ACT_FLAG_PREVENT_YIELD) == 0);
-
- /* Unwind catchstack entries referring to the callstack entry we're reusing */
- cs_index = thr->callstack_top - 1;
- DUK_ASSERT(thr->catchstack_top <= DUK_INT_MAX); /* catchstack limits */
- for (i_stk = (duk_int_t) (thr->catchstack_top - 1); i_stk >= 0; i_stk--) {
- duk_catcher *cat = thr->catchstack + i_stk;
- if (cat->callstack_index != cs_index) {
- /* 'i' is the first entry we'll keep */
- break;
- }
- }
- duk_hthread_catchstack_unwind(thr, i_stk + 1);
-
- /* Unwind the topmost callstack entry before reusing it */
- DUK_ASSERT(thr->callstack_top > 0);
- duk_hthread_callstack_unwind(thr, thr->callstack_top - 1);
-
- /* Then reuse the unwound activation; callstack was not shrunk so there is always space */
- thr->callstack_top++;
- DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
- act = thr->callstack + thr->callstack_top - 1;
-
- /* Start filling in the activation */
- act->func = func; /* don't want an intermediate exposed state with func == NULL */
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- act->prev_caller = NULL;
-#endif
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
- /* don't want an intermediate exposed state with invalid pc */
- act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- act->prev_line = 0;
-#endif
- DUK_TVAL_SET_OBJECT(&act->tv_func, func); /* borrowed, no refcount */
-#if defined(DUK_USE_REFERENCE_COUNTING)
- DUK_HOBJECT_INCREF(thr, func);
- act = thr->callstack + thr->callstack_top - 1; /* side effects (currently none though) */
-#endif
-
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
-#if defined(DUK_USE_TAILCALL)
-#error incorrect options: tail calls enabled with function caller property
-#endif
- /* XXX: this doesn't actually work properly for tail calls, so
- * tail calls are disabled when DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- * is in use.
- */
- duk__update_func_caller_prop(thr, func);
- act = thr->callstack + thr->callstack_top - 1;
-#endif
-
- act->flags = (DUK_HOBJECT_HAS_STRICT(func) ?
- DUK_ACT_FLAG_STRICT | DUK_ACT_FLAG_TAILCALLED :
- DUK_ACT_FLAG_TAILCALLED);
-
- DUK_ASSERT(DUK_ACT_GET_FUNC(act) == func); /* already updated */
- DUK_ASSERT(act->var_env == NULL); /* already NULLed (by unwind) */
- DUK_ASSERT(act->lex_env == NULL); /* already NULLed (by unwind) */
- act->idx_bottom = entry_valstack_bottom_index; /* tail call -> reuse current "frame" */
- DUK_ASSERT(nregs >= 0);
-#if 0 /* topmost activation idx_retval is considered garbage, no need to init */
- act->idx_retval = 0;
-#endif
-
- /*
- * Manipulate valstack so that args are on the current bottom and the
- * previous caller's 'this' binding (which is the value preceding the
- * current bottom) is replaced with the new 'this' binding:
- *
- * [ ... this_old | (crud) func this_new arg1 ... argN ]
- * --> [ ... this_new | arg1 ... argN ]
- *
- * For tail calling to work properly, the valstack bottom must not grow
- * here; otherwise crud would accumulate on the valstack.
- */
-
- tv1 = thr->valstack_bottom - 1;
- tv2 = thr->valstack_bottom + idx_func + 1;
- DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top); /* tv1 is -below- valstack_bottom */
- DUK_ASSERT(tv2 >= thr->valstack_bottom && tv2 < thr->valstack_top);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
-
- for (i_arg = 0; i_arg < idx_args; i_arg++) {
- /* XXX: block removal API primitive */
- /* Note: 'func' is popped from valstack here, but it is
- * already reachable from the activation.
- */
- duk_remove(ctx, 0);
- }
- idx_func = 0; DUK_UNREF(idx_func); /* really 'not applicable' anymore, should not be referenced after this */
- idx_args = 0;
-
- /* [ ... this_new | arg1 ... argN ] */
- } else {
- DUK_DDD(DUK_DDDPRINT("not a tail call, pushing a new activation to callstack, to index %ld",
- (long) (thr->callstack_top)));
-
- duk_hthread_callstack_grow(thr);
-
- if (call_flags & DUK_CALL_FLAG_IS_RESUME) {
- DUK_DDD(DUK_DDDPRINT("is resume -> no update to current activation (may not even exist)"));
- } else {
- DUK_DDD(DUK_DDDPRINT("update to current activation idx_retval"));
- DUK_ASSERT(thr->callstack_top < thr->callstack_size);
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
- DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(act)));
- act->idx_retval = entry_valstack_bottom_index + idx_func;
- }
-
- DUK_ASSERT(thr->callstack_top < thr->callstack_size);
- act = thr->callstack + thr->callstack_top;
- thr->callstack_top++;
- DUK_ASSERT(thr->callstack_top <= thr->callstack_size);
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(func));
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
-
- act->flags = (DUK_HOBJECT_HAS_STRICT(func) ?
- DUK_ACT_FLAG_STRICT :
- 0);
- act->func = func;
- act->var_env = NULL;
- act->lex_env = NULL;
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- act->prev_caller = NULL;
-#endif
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(func));
- act->curr_pc = DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, (duk_hcompiledfunction *) func);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- act->prev_line = 0;
-#endif
- act->idx_bottom = entry_valstack_bottom_index + idx_args;
- DUK_ASSERT(nregs >= 0);
-#if 0 /* topmost activation idx_retval is considered garbage, no need to init */
- act->idx_retval = 0;
-#endif
- DUK_TVAL_SET_OBJECT(&act->tv_func, func); /* borrowed, no refcount */
-
- DUK_HOBJECT_INCREF(thr, func); /* act->func */
-
-#if defined(DUK_USE_NONSTD_FUNC_CALLER_PROPERTY)
- duk__update_func_caller_prop(thr, func);
- act = thr->callstack + thr->callstack_top - 1;
-#endif
- }
-
- /* [ ... func this arg1 ... argN ] (not tail call)
- * [ this | arg1 ... argN ] (tail call)
- *
- * idx_args updated to match
- */
-
- /*
- * Environment record creation and 'arguments' object creation.
- * Named function expression name binding is handled by the
- * compiler; the compiled function's parent env will contain
- * the (immutable) binding already.
- *
- * Delayed creation (on demand) is handled in duk_js_var.c.
- */
-
- /* XXX: unify handling with native call. */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func)); /* bound function chain has already been resolved */
-
- if (!DUK_HOBJECT_HAS_NEWENV(func)) {
- /* use existing env (e.g. for non-strict eval); cannot have
- * an own 'arguments' object (but can refer to the existing one)
- */
-
- duk__handle_oldenv_for_call(thr, func, act);
-
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
- goto env_done;
- }
-
- DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func));
-
- if (!DUK_HOBJECT_HAS_CREATEARGS(func)) {
- /* no need to create environment record now; leave as NULL */
- DUK_ASSERT(act->lex_env == NULL);
- DUK_ASSERT(act->var_env == NULL);
- goto env_done;
- }
-
- /* third arg: absolute index (to entire valstack) of idx_bottom of new activation */
- env = duk_create_activation_environment_record(thr, func, act->idx_bottom);
- DUK_ASSERT(env != NULL);
-
- /* [ ... arg1 ... argN envobj ] */
-
- /* original input stack before nargs/nregs handling must be
- * intact for 'arguments' object
- */
- DUK_ASSERT(DUK_HOBJECT_HAS_CREATEARGS(func));
- duk__handle_createargs_for_call(thr, func, env, num_stack_args);
-
- /* [ ... arg1 ... argN envobj ] */
-
- act = thr->callstack + thr->callstack_top - 1;
- act->lex_env = env;
- act->var_env = env;
- DUK_HOBJECT_INCREF(thr, act->lex_env);
- DUK_HOBJECT_INCREF(thr, act->var_env);
- duk_pop(ctx);
-
- env_done:
- /* [ ... arg1 ... argN ] */
-
- /*
- * Setup value stack: clamp to 'nargs', fill up to 'nregs'
- */
-
- duk__adjust_valstack_and_top(thr,
- num_stack_args,
- idx_args,
- nregs,
- nargs,
- func);
-
- /*
- * Shift to new valstack_bottom.
- */
-
- thr->valstack_bottom = thr->valstack_bottom + idx_args;
- /* keep current valstack_top */
- DUK_ASSERT(thr->valstack_bottom >= thr->valstack);
- DUK_ASSERT(thr->valstack_top >= thr->valstack_bottom);
- DUK_ASSERT(thr->valstack_end >= thr->valstack_top);
-
- /*
- * Return to bytecode executor, which will resume execution from
- * the topmost activation.
- */
-
- return 1;
-}
-#line 1 "duk_js_compiler.c"
-/*
- * Ecmascript compiler.
- *
- * Parses an input string and generates a function template result.
- * Compilation may happen in multiple contexts (global code, eval
- * code, function code).
- *
- * The parser uses a traditional top-down recursive parsing for the
- * statement level, and an operator precedence based top-down approach
- * for the expression level. The attempt is to minimize the C stack
- * depth. Bytecode is generated directly without an intermediate
- * representation (tree), at the cost of needing two passes over each
- * function.
- *
- * The top-down recursive parser functions are named "duk__parse_XXX".
- *
- * Recursion limits are in key functions to prevent arbitrary C recursion:
- * function body parsing, statement parsing, and expression parsing.
- *
- * See doc/compiler.rst for discussion on the design.
- *
- * A few typing notes:
- *
- * - duk_regconst_t: unsigned, no marker value for "none"
- * - duk_reg_t: signed, < 0 = none
- * - PC values: duk_int_t, negative values used as markers
- */
-
-/* include removed: duk_internal.h */
-
-/* if highest bit of a register number is set, it refers to a constant instead */
-#define DUK__CONST_MARKER DUK_JS_CONST_MARKER
-
-/* for array and object literals */
-#define DUK__MAX_ARRAY_INIT_VALUES 20
-#define DUK__MAX_OBJECT_INIT_PAIRS 10
-
-/* XXX: hack, remove when const lookup is not O(n) */
-#define DUK__GETCONST_MAX_CONSTS_CHECK 256
-
-/* These limits are based on bytecode limits. Max temps is limited
- * by duk_hcompiledfunction nargs/nregs fields being 16 bits.
- */
-#define DUK__MAX_CONSTS DUK_BC_BC_MAX
-#define DUK__MAX_FUNCS DUK_BC_BC_MAX
-#define DUK__MAX_TEMPS 0xffffL
-
-/* Initial bytecode size allocation. */
-#define DUK__BC_INITIAL_INSTS 256
-
-#define DUK__RECURSION_INCREASE(comp_ctx,thr) do { \
- DUK_DDD(DUK_DDDPRINT("RECURSION INCREASE: %s:%ld", (const char *) DUK_FILE_MACRO, (long) DUK_LINE_MACRO)); \
- duk__recursion_increase((comp_ctx)); \
- } while (0)
-
-#define DUK__RECURSION_DECREASE(comp_ctx,thr) do { \
- DUK_DDD(DUK_DDDPRINT("RECURSION DECREASE: %s:%ld", (const char *) DUK_FILE_MACRO, (long) DUK_LINE_MACRO)); \
- duk__recursion_decrease((comp_ctx)); \
- } while (0)
-
-/* Value stack slot limits: these are quite approximate right now, and
- * because they overlap in control flow, some could be eliminated.
- */
-#define DUK__COMPILE_ENTRY_SLOTS 8
-#define DUK__FUNCTION_INIT_REQUIRE_SLOTS 16
-#define DUK__FUNCTION_BODY_REQUIRE_SLOTS 16
-#define DUK__PARSE_STATEMENTS_SLOTS 16
-#define DUK__PARSE_EXPR_SLOTS 16
-
-/* Temporary structure used to pass a stack allocated region through
- * duk_safe_call().
- */
-typedef struct {
- duk_small_uint_t flags;
- duk_compiler_ctx comp_ctx_alloc;
- duk_lexer_point lex_pt_alloc;
-} duk__compiler_stkstate;
-
-/*
- * Prototypes
- */
-
-/* lexing */
-DUK_LOCAL_DECL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t expect);
-DUK_LOCAL_DECL void duk__advance_expect(duk_compiler_ctx *comp_ctx, duk_small_int_t expect);
-DUK_LOCAL_DECL void duk__advance(duk_compiler_ctx *ctx);
-
-/* function helpers */
-DUK_LOCAL_DECL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL void duk__reset_func_for_pass2(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL void duk__init_varmap_and_prologue_for_pass2(duk_compiler_ctx *comp_ctx, duk_reg_t *out_stmt_value_reg);
-DUK_LOCAL_DECL void duk__convert_to_func_template(duk_compiler_ctx *comp_ctx, duk_bool_t force_no_namebind);
-DUK_LOCAL_DECL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx);
-
-/* code emission */
-DUK_LOCAL_DECL duk_int_t duk__get_current_pc(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL duk_compiler_instr *duk__get_instr_ptr(duk_compiler_ctx *comp_ctx, duk_int_t pc);
-DUK_LOCAL_DECL void duk__emit(duk_compiler_ctx *comp_ctx, duk_instr_t ins);
-#if 0 /* unused */
-DUK_LOCAL_DECL void duk__emit_op_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t op);
-#endif
-DUK_LOCAL_DECL void duk__emit_a_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b, duk_regconst_t c);
-DUK_LOCAL_DECL void duk__emit_a_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b);
-#if 0 /* unused */
-DUK_LOCAL_DECL void duk__emit_a(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a);
-#endif
-DUK_LOCAL_DECL void duk__emit_a_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t bc);
-DUK_LOCAL_DECL void duk__emit_abc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t abc);
-DUK_LOCAL_DECL void duk__emit_extraop_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags, duk_regconst_t b, duk_regconst_t c);
-DUK_LOCAL_DECL void duk__emit_extraop_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags, duk_regconst_t b);
-DUK_LOCAL_DECL void duk__emit_extraop_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop, duk_regconst_t bc);
-DUK_LOCAL_DECL void duk__emit_extraop_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags);
-DUK_LOCAL_DECL void duk__emit_load_int32(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val);
-DUK_LOCAL_DECL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val);
-DUK_LOCAL_DECL void duk__emit_jump(duk_compiler_ctx *comp_ctx, duk_int_t target_pc);
-DUK_LOCAL_DECL duk_int_t duk__emit_jump_empty(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL void duk__insert_jump_entry(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc);
-DUK_LOCAL_DECL void duk__patch_jump(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc, duk_int_t target_pc);
-DUK_LOCAL_DECL void duk__patch_jump_here(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc);
-DUK_LOCAL_DECL void duk__patch_trycatch(duk_compiler_ctx *comp_ctx, duk_int_t ldconst_pc, duk_int_t trycatch_pc, duk_regconst_t reg_catch, duk_regconst_t const_varname, duk_small_uint_t flags);
-DUK_LOCAL_DECL void duk__emit_if_false_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst);
-DUK_LOCAL_DECL void duk__emit_if_true_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst);
-DUK_LOCAL_DECL void duk__emit_invalid(duk_compiler_ctx *comp_ctx);
-
-/* ivalue/ispec helpers */
-DUK_LOCAL_DECL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst);
-DUK_LOCAL_DECL void duk__copy_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *src, duk_ivalue *dst);
-DUK_LOCAL_DECL duk_bool_t duk__is_whole_get_int32(duk_double_t x, duk_int32_t *ival);
-DUK_LOCAL_DECL duk_reg_t duk__alloctemps(duk_compiler_ctx *comp_ctx, duk_small_int_t num);
-DUK_LOCAL_DECL duk_reg_t duk__alloctemp(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL void duk__settemp_checkmax(duk_compiler_ctx *comp_ctx, duk_reg_t temp_next);
-DUK_LOCAL_DECL duk_regconst_t duk__getconst(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL
-duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx,
- duk_ispec *x,
- duk_reg_t forced_reg,
- duk_small_uint_t flags);
-DUK_LOCAL_DECL void duk__ispec_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ispec *x, duk_reg_t forced_reg);
-DUK_LOCAL_DECL void duk__ivalue_toplain_raw(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_reg_t forced_reg);
-DUK_LOCAL_DECL void duk__ivalue_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-DUK_LOCAL_DECL void duk__ivalue_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-DUK_LOCAL_DECL
-duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx,
- duk_ivalue *x,
- duk_reg_t forced_reg,
- duk_small_uint_t flags);
-DUK_LOCAL_DECL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-#endif
-DUK_LOCAL_DECL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg);
-DUK_LOCAL_DECL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-DUK_LOCAL_DECL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x);
-
-/* identifier handling */
-DUK_LOCAL_DECL duk_reg_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL duk_bool_t duk__lookup_lhs(duk_compiler_ctx *ctx, duk_reg_t *out_reg_varbind, duk_regconst_t *out_rc_varname);
-
-/* label handling */
-DUK_LOCAL_DECL void duk__add_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_int_t pc_label, duk_int_t label_id);
-DUK_LOCAL_DECL void duk__update_label_flags(duk_compiler_ctx *comp_ctx, duk_int_t label_id, duk_small_uint_t flags);
-DUK_LOCAL_DECL void duk__lookup_active_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_bool_t is_break, duk_int_t *out_label_id, duk_int_t *out_label_catch_depth, duk_int_t *out_label_pc, duk_bool_t *out_is_closest);
-DUK_LOCAL_DECL void duk__reset_labels_to_length(duk_compiler_ctx *comp_ctx, duk_int_t len);
-
-/* top-down expression parser */
-DUK_LOCAL_DECL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_ivalue *res);
-DUK_LOCAL_DECL duk_small_uint_t duk__expr_lbp(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL duk_bool_t duk__expr_is_empty(duk_compiler_ctx *comp_ctx);
-
-/* exprtop is the top level variant which resets nud/led counts */
-DUK_LOCAL_DECL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-DUK_LOCAL_DECL void duk__exprtop(duk_compiler_ctx *ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-
-/* convenience helpers */
-#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#endif
-#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#endif
-DUK_LOCAL_DECL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg);
-DUK_LOCAL_DECL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#if 0 /* unused */
-DUK_LOCAL_DECL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#endif
-DUK_LOCAL_DECL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-DUK_LOCAL_DECL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-DUK_LOCAL_DECL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#if 0 /* unused */
-DUK_LOCAL_DECL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#endif
-DUK_LOCAL_DECL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg);
-DUK_LOCAL_DECL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#if 0 /* unused */
-DUK_LOCAL_DECL void duk__exprtop_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags);
-#endif
-
-/* expression parsing helpers */
-DUK_LOCAL_DECL duk_int_t duk__parse_arguments(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__nud_array_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__nud_object_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL duk_bool_t duk__nud_object_literal_key_check(duk_compiler_ctx *comp_ctx, duk_small_uint_t new_key_flags);
-
-/* statement parsing */
-DUK_LOCAL_DECL void duk__parse_var_decl(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags, duk_reg_t *out_reg_varbind, duk_regconst_t *out_rc_varname);
-DUK_LOCAL_DECL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags);
-DUK_LOCAL_DECL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site);
-DUK_LOCAL_DECL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site);
-DUK_LOCAL_DECL void duk__parse_if_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_do_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site);
-DUK_LOCAL_DECL void duk__parse_while_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site);
-DUK_LOCAL_DECL void duk__parse_break_or_continue_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_throw_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_with_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res);
-DUK_LOCAL_DECL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_bool_t allow_source_elem);
-DUK_LOCAL_DECL duk_int_t duk__stmt_label_site(duk_compiler_ctx *comp_ctx, duk_int_t label_id);
-DUK_LOCAL_DECL void duk__parse_stmts(duk_compiler_ctx *comp_ctx, duk_bool_t allow_source_elem, duk_bool_t expect_eof);
-
-DUK_LOCAL_DECL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, duk_bool_t expect_eof, duk_bool_t implicit_return_value, duk_small_int_t expect_token);
-DUK_LOCAL_DECL void duk__parse_func_formals(duk_compiler_ctx *comp_ctx);
-DUK_LOCAL_DECL void duk__parse_func_like_raw(duk_compiler_ctx *comp_ctx, duk_bool_t is_decl, duk_bool_t is_setget);
-DUK_LOCAL_DECL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, duk_bool_t is_decl, duk_bool_t is_setget);
-
-/*
- * Parser control values for tokens. The token table is ordered by the
- * DUK_TOK_XXX defines.
- *
- * The binding powers are for lbp() use (i.e. for use in led() context).
- * Binding powers are positive for typing convenience, and bits at the
- * top should be reserved for flags. Binding power step must be higher
- * than 1 so that binding power "lbp - 1" can be used for right associative
- * operators. Currently a step of 2 is used (which frees one more bit for
- * flags).
- */
-
-/* XXX: actually single step levels would work just fine, clean up */
-
-/* binding power "levels" (see doc/compiler.rst) */
-#define DUK__BP_INVALID 0 /* always terminates led() */
-#define DUK__BP_EOF 2
-#define DUK__BP_CLOSING 4 /* token closes expression, e.g. ')', ']' */
-#define DUK__BP_FOR_EXPR DUK__BP_CLOSING /* bp to use when parsing a top level Expression */
-#define DUK__BP_COMMA 6
-#define DUK__BP_ASSIGNMENT 8
-#define DUK__BP_CONDITIONAL 10
-#define DUK__BP_LOR 12
-#define DUK__BP_LAND 14
-#define DUK__BP_BOR 16
-#define DUK__BP_BXOR 18
-#define DUK__BP_BAND 20
-#define DUK__BP_EQUALITY 22
-#define DUK__BP_RELATIONAL 24
-#define DUK__BP_SHIFT 26
-#define DUK__BP_ADDITIVE 28
-#define DUK__BP_MULTIPLICATIVE 30
-#define DUK__BP_POSTFIX 32
-#define DUK__BP_CALL 34
-#define DUK__BP_MEMBER 36
-
-#define DUK__TOKEN_LBP_BP_MASK 0x1f
-#define DUK__TOKEN_LBP_FLAG_NO_REGEXP (1 << 5) /* regexp literal must not follow this token */
-#define DUK__TOKEN_LBP_FLAG_TERMINATES (1 << 6) /* terminates expression; e.g. post-increment/-decrement */
-#define DUK__TOKEN_LBP_FLAG_UNUSED (1 << 7) /* spare */
-
-#define DUK__TOKEN_LBP_GET_BP(x) ((duk_small_uint_t) (((x) & DUK__TOKEN_LBP_BP_MASK) * 2))
-
-#define DUK__MK_LBP(bp) ((bp) >> 1) /* bp is assumed to be even */
-#define DUK__MK_LBP_FLAGS(bp,flags) (((bp) >> 1) | (flags))
-
-DUK_LOCAL const duk_uint8_t duk__token_lbp[] = {
- DUK__MK_LBP(DUK__BP_EOF), /* DUK_TOK_EOF */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_IDENTIFIER */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_BREAK */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CASE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CATCH */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CONTINUE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DEBUGGER */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DEFAULT */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DELETE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_DO */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_ELSE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FINALLY */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FOR */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_FUNCTION */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IF */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_IN */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_INSTANCEOF */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_NEW */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_RETURN */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SWITCH */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_THIS */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_THROW */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_TRY */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_TYPEOF */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_VAR */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CONST */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_VOID */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_WHILE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_WITH */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_CLASS */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_ENUM */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_EXPORT */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_EXTENDS */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IMPORT */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SUPER */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_NULL */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_TRUE */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_FALSE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_GET */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SET */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_IMPLEMENTS */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_INTERFACE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LET */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PACKAGE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PRIVATE */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PROTECTED */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_PUBLIC */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_STATIC */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_YIELD */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LCURLY */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RCURLY */
- DUK__MK_LBP(DUK__BP_MEMBER), /* DUK_TOK_LBRACKET */
- DUK__MK_LBP_FLAGS(DUK__BP_CLOSING, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RBRACKET */
- DUK__MK_LBP(DUK__BP_CALL), /* DUK_TOK_LPAREN */
- DUK__MK_LBP_FLAGS(DUK__BP_CLOSING, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_RPAREN */
- DUK__MK_LBP(DUK__BP_MEMBER), /* DUK_TOK_PERIOD */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_SEMICOLON */
- DUK__MK_LBP(DUK__BP_COMMA), /* DUK_TOK_COMMA */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_LT */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_GT */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_LE */
- DUK__MK_LBP(DUK__BP_RELATIONAL), /* DUK_TOK_GE */
- DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_EQ */
- DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_NEQ */
- DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_SEQ */
- DUK__MK_LBP(DUK__BP_EQUALITY), /* DUK_TOK_SNEQ */
- DUK__MK_LBP(DUK__BP_ADDITIVE), /* DUK_TOK_ADD */
- DUK__MK_LBP(DUK__BP_ADDITIVE), /* DUK_TOK_SUB */
- DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_MUL */
- DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_DIV */
- DUK__MK_LBP(DUK__BP_MULTIPLICATIVE), /* DUK_TOK_MOD */
- DUK__MK_LBP(DUK__BP_POSTFIX), /* DUK_TOK_INCREMENT */
- DUK__MK_LBP(DUK__BP_POSTFIX), /* DUK_TOK_DECREMENT */
- DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_ALSHIFT */
- DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_ARSHIFT */
- DUK__MK_LBP(DUK__BP_SHIFT), /* DUK_TOK_RSHIFT */
- DUK__MK_LBP(DUK__BP_BAND), /* DUK_TOK_BAND */
- DUK__MK_LBP(DUK__BP_BOR), /* DUK_TOK_BOR */
- DUK__MK_LBP(DUK__BP_BXOR), /* DUK_TOK_BXOR */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_LNOT */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_BNOT */
- DUK__MK_LBP(DUK__BP_LAND), /* DUK_TOK_LAND */
- DUK__MK_LBP(DUK__BP_LOR), /* DUK_TOK_LOR */
- DUK__MK_LBP(DUK__BP_CONDITIONAL), /* DUK_TOK_QUESTION */
- DUK__MK_LBP(DUK__BP_INVALID), /* DUK_TOK_COLON */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_EQUALSIGN */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ADD_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_SUB_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_MUL_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_DIV_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_MOD_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ALSHIFT_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_ARSHIFT_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_RSHIFT_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BAND_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BOR_EQ */
- DUK__MK_LBP(DUK__BP_ASSIGNMENT), /* DUK_TOK_BXOR_EQ */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_NUMBER */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_STRING */
- DUK__MK_LBP_FLAGS(DUK__BP_INVALID, DUK__TOKEN_LBP_FLAG_NO_REGEXP), /* DUK_TOK_REGEXP */
-};
-
-/*
- * Misc helpers
- */
-
-DUK_LOCAL void duk__recursion_increase(duk_compiler_ctx *comp_ctx) {
- DUK_ASSERT(comp_ctx != NULL);
- DUK_ASSERT(comp_ctx->recursion_depth >= 0);
- if (comp_ctx->recursion_depth >= comp_ctx->recursion_limit) {
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_COMPILER_RECURSION_LIMIT);
- }
- comp_ctx->recursion_depth++;
-}
-
-DUK_LOCAL void duk__recursion_decrease(duk_compiler_ctx *comp_ctx) {
- DUK_ASSERT(comp_ctx != NULL);
- DUK_ASSERT(comp_ctx->recursion_depth > 0);
- comp_ctx->recursion_depth--;
-}
-
-DUK_LOCAL duk_bool_t duk__hstring_is_eval_or_arguments(duk_compiler_ctx *comp_ctx, duk_hstring *h) {
- DUK_UNREF(comp_ctx);
- DUK_ASSERT(h != NULL);
- return DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(h);
-}
-
-DUK_LOCAL duk_bool_t duk__hstring_is_eval_or_arguments_in_strict_mode(duk_compiler_ctx *comp_ctx, duk_hstring *h) {
- DUK_ASSERT(h != NULL);
- return (comp_ctx->curr_func.is_strict &&
- DUK_HSTRING_HAS_EVAL_OR_ARGUMENTS(h));
-}
-
-/*
- * Parser duk__advance() token eating functions
- */
-
-/* XXX: valstack handling is awkward. Add a valstack helper which
- * avoids dup():ing; valstack_copy(src, dst)?
- */
-
-DUK_LOCAL void duk__advance_helper(duk_compiler_ctx *comp_ctx, duk_small_int_t expect) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t regexp;
-
- DUK_ASSERT(comp_ctx->curr_token.t >= 0 && comp_ctx->curr_token.t <= DUK_TOK_MAXVAL); /* MAXVAL is inclusive */
-
- /*
- * Use current token to decide whether a RegExp can follow.
- *
- * We can use either 't' or 't_nores'; the latter would not
- * recognize keywords. Some keywords can be followed by a
- * RegExp (e.g. "return"), so using 't' is better. This is
- * not trivial, see doc/compiler.rst.
- */
-
- regexp = 1;
- if (duk__token_lbp[comp_ctx->curr_token.t] & DUK__TOKEN_LBP_FLAG_NO_REGEXP) {
- regexp = 0;
- }
- if (comp_ctx->curr_func.reject_regexp_in_adv) {
- comp_ctx->curr_func.reject_regexp_in_adv = 0;
- regexp = 0;
- }
-
- if (expect >= 0 && comp_ctx->curr_token.t != expect) {
- DUK_D(DUK_DPRINT("parse error: expect=%ld, got=%ld",
- (long) expect, (long) comp_ctx->curr_token.t));
- DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR);
- }
-
- /* make current token the previous; need to fiddle with valstack "backing store" */
- DUK_MEMCPY(&comp_ctx->prev_token, &comp_ctx->curr_token, sizeof(duk_token));
- duk_copy(ctx, comp_ctx->tok11_idx, comp_ctx->tok21_idx);
- duk_copy(ctx, comp_ctx->tok12_idx, comp_ctx->tok22_idx);
-
- /* parse new token */
- duk_lexer_parse_js_input_element(&comp_ctx->lex,
- &comp_ctx->curr_token,
- comp_ctx->curr_func.is_strict,
- regexp);
-
- DUK_DDD(DUK_DDDPRINT("advance: curr: tok=%ld/%ld,%ld,term=%ld,%!T,%!T "
- "prev: tok=%ld/%ld,%ld,term=%ld,%!T,%!T",
- (long) comp_ctx->curr_token.t,
- (long) comp_ctx->curr_token.t_nores,
- (long) comp_ctx->curr_token.start_line,
- (long) comp_ctx->curr_token.lineterm,
- (duk_tval *) duk_get_tval(ctx, comp_ctx->tok11_idx),
- (duk_tval *) duk_get_tval(ctx, comp_ctx->tok12_idx),
- (long) comp_ctx->prev_token.t,
- (long) comp_ctx->prev_token.t_nores,
- (long) comp_ctx->prev_token.start_line,
- (long) comp_ctx->prev_token.lineterm,
- (duk_tval *) duk_get_tval(ctx, comp_ctx->tok21_idx),
- (duk_tval *) duk_get_tval(ctx, comp_ctx->tok22_idx)));
-}
-
-/* advance, expecting current token to be a specific token; parse next token in regexp context */
-DUK_LOCAL void duk__advance_expect(duk_compiler_ctx *comp_ctx, duk_small_int_t expect) {
- duk__advance_helper(comp_ctx, expect);
-}
-
-/* advance, whatever the current token is; parse next token in regexp context */
-DUK_LOCAL void duk__advance(duk_compiler_ctx *comp_ctx) {
- duk__advance_helper(comp_ctx, -1);
-}
-
-/*
- * Helpers for duk_compiler_func.
- */
-
-/* init function state: inits valstack allocations */
-DUK_LOCAL void duk__init_func_valstack_slots(duk_compiler_ctx *comp_ctx) {
- duk_compiler_func *func = &comp_ctx->curr_func;
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_idx_t entry_top;
-
- entry_top = duk_get_top(ctx);
-
- DUK_MEMZERO(func, sizeof(*func)); /* intentional overlap with earlier memzero */
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- func->h_name = NULL;
- func->h_consts = NULL;
- func->h_funcs = NULL;
- func->h_decls = NULL;
- func->h_labelnames = NULL;
- func->h_labelinfos = NULL;
- func->h_argnames = NULL;
- func->h_varmap = NULL;
-#endif
-
- duk_require_stack(ctx, DUK__FUNCTION_INIT_REQUIRE_SLOTS);
-
- DUK_BW_INIT_PUSHBUF(thr, &func->bw_code, DUK__BC_INITIAL_INSTS * sizeof(duk_compiler_instr));
- /* code_idx = entry_top + 0 */
-
- duk_push_array(ctx);
- func->consts_idx = entry_top + 1;
- func->h_consts = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 1);
- DUK_ASSERT(func->h_consts != NULL);
-
- duk_push_array(ctx);
- func->funcs_idx = entry_top + 2;
- func->h_funcs = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 2);
- DUK_ASSERT(func->h_funcs != NULL);
- DUK_ASSERT(func->fnum_next == 0);
-
- duk_push_array(ctx);
- func->decls_idx = entry_top + 3;
- func->h_decls = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 3);
- DUK_ASSERT(func->h_decls != NULL);
-
- duk_push_array(ctx);
- func->labelnames_idx = entry_top + 4;
- func->h_labelnames = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 4);
- DUK_ASSERT(func->h_labelnames != NULL);
-
- duk_push_dynamic_buffer(ctx, 0);
- func->labelinfos_idx = entry_top + 5;
- func->h_labelinfos = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 5);
- DUK_ASSERT(func->h_labelinfos != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(func->h_labelinfos) && !DUK_HBUFFER_HAS_EXTERNAL(func->h_labelinfos));
-
- duk_push_array(ctx);
- func->argnames_idx = entry_top + 6;
- func->h_argnames = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 6);
- DUK_ASSERT(func->h_argnames != NULL);
-
- duk_push_object_internal(ctx);
- func->varmap_idx = entry_top + 7;
- func->h_varmap = DUK_GET_HOBJECT_POSIDX(ctx, entry_top + 7);
- DUK_ASSERT(func->h_varmap != NULL);
-}
-
-/* reset function state (prepare for pass 2) */
-DUK_LOCAL void duk__reset_func_for_pass2(duk_compiler_ctx *comp_ctx) {
- duk_compiler_func *func = &comp_ctx->curr_func;
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
-
- /* reset bytecode buffer but keep current size; pass 2 will
- * require same amount or more.
- */
- DUK_BW_RESET_SIZE(thr, &func->bw_code);
-
- duk_hobject_set_length_zero(thr, func->h_consts);
- /* keep func->h_funcs; inner functions are not reparsed to avoid O(depth^2) parsing */
- func->fnum_next = 0;
- /* duk_hobject_set_length_zero(thr, func->h_funcs); */
- duk_hobject_set_length_zero(thr, func->h_labelnames);
- duk_hbuffer_reset(thr, func->h_labelinfos);
- /* keep func->h_argnames; it is fixed for all passes */
-
- /* truncated in case pass 3 needed */
- duk_push_object_internal(ctx);
- duk_replace(ctx, func->varmap_idx);
- func->h_varmap = DUK_GET_HOBJECT_POSIDX(ctx, func->varmap_idx);
- DUK_ASSERT(func->h_varmap != NULL);
-}
-
-/* cleanup varmap from any null entries, compact it, etc; returns number
- * of final entries after cleanup.
- */
-DUK_LOCAL duk_int_t duk__cleanup_varmap(duk_compiler_ctx *comp_ctx) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *h_varmap;
- duk_hstring *h_key;
- duk_tval *tv;
- duk_uint32_t i, e_next;
- duk_int_t ret;
-
- /* [ ... varmap ] */
-
- h_varmap = DUK_GET_HOBJECT_NEGIDX(ctx, -1);
- DUK_ASSERT(h_varmap != NULL);
-
- ret = 0;
- e_next = DUK_HOBJECT_GET_ENEXT(h_varmap);
- for (i = 0; i < e_next; i++) {
- h_key = DUK_HOBJECT_E_GET_KEY(thr->heap, h_varmap, i);
- if (!h_key) {
- continue;
- }
-
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, h_varmap, i));
-
- /* The entries can either be register numbers or 'null' values.
- * Thus, no need to DECREF them and get side effects. DECREF'ing
- * the keys (strings) can cause memory to be freed but no side
- * effects as strings don't have finalizers. This is why we can
- * rely on the object properties not changing from underneath us.
- */
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, h_varmap, i);
- if (!DUK_TVAL_IS_NUMBER(tv)) {
- DUK_ASSERT(!DUK_TVAL_IS_HEAP_ALLOCATED(tv));
- DUK_HOBJECT_E_SET_KEY(thr->heap, h_varmap, i, NULL);
- DUK_HSTRING_DECREF(thr, h_key);
- /* when key is NULL, value is garbage so no need to set */
- } else {
- ret++;
- }
- }
-
- duk_compact(ctx, -1);
-
- return ret;
-}
-
-/* convert duk_compiler_func into a function template, leaving the result
- * on top of stack.
- */
-/* XXX: awkward and bloated asm -- use faster internal accesses */
-DUK_LOCAL void duk__convert_to_func_template(duk_compiler_ctx *comp_ctx, duk_bool_t force_no_namebind) {
- duk_compiler_func *func = &comp_ctx->curr_func;
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_hcompiledfunction *h_res;
- duk_hbuffer_fixed *h_data;
- duk_size_t consts_count;
- duk_size_t funcs_count;
- duk_size_t code_count;
- duk_size_t code_size;
- duk_size_t data_size;
- duk_size_t i;
- duk_tval *p_const;
- duk_hobject **p_func;
- duk_instr_t *p_instr;
- duk_compiler_instr *q_instr;
- duk_tval *tv;
-
- DUK_DDD(DUK_DDDPRINT("converting duk_compiler_func to function/template"));
-
- /*
- * Push result object and init its flags
- */
-
- /* Valstack should suffice here, required on function valstack init */
-
- (void) duk_push_compiledfunction(ctx);
- h_res = (duk_hcompiledfunction *) DUK_GET_HOBJECT_NEGIDX(ctx, -1); /* XXX: specific getter */
- DUK_ASSERT(h_res != NULL);
-
- if (func->is_function) {
- DUK_DDD(DUK_DDDPRINT("function -> set NEWENV"));
- DUK_HOBJECT_SET_NEWENV((duk_hobject *) h_res);
-
- if (!func->is_arguments_shadowed) {
- /* arguments object would be accessible; note that shadowing
- * bindings are arguments or function declarations, neither
- * of which are deletable, so this is safe.
- */
-
- if (func->id_access_arguments || func->may_direct_eval) {
- DUK_DDD(DUK_DDDPRINT("function may access 'arguments' object directly or "
- "indirectly -> set CREATEARGS"));
- DUK_HOBJECT_SET_CREATEARGS((duk_hobject *) h_res);
- }
- }
- } else if (func->is_eval && func->is_strict) {
- DUK_DDD(DUK_DDDPRINT("strict eval code -> set NEWENV"));
- DUK_HOBJECT_SET_NEWENV((duk_hobject *) h_res);
- } else {
- /* non-strict eval: env is caller's env or global env (direct vs. indirect call)
- * global code: env is is global env
- */
- DUK_DDD(DUK_DDDPRINT("non-strict eval code or global code -> no NEWENV"));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NEWENV((duk_hobject *) h_res));
- }
-
- if (func->is_function && !func->is_decl && func->h_name != NULL && !force_no_namebind) {
- /* Object literal set/get functions have a name (property
- * name) but must not have a lexical name binding, see
- * test-bug-getset-func-name.js.
- */
- DUK_DDD(DUK_DDDPRINT("function expression with a name -> set NAMEBINDING"));
- DUK_HOBJECT_SET_NAMEBINDING((duk_hobject *) h_res);
- }
-
- if (func->is_strict) {
- DUK_DDD(DUK_DDDPRINT("function is strict -> set STRICT"));
- DUK_HOBJECT_SET_STRICT((duk_hobject *) h_res);
- }
-
- if (func->is_notail) {
- DUK_DDD(DUK_DDDPRINT("function is notail -> set NOTAIL"));
- DUK_HOBJECT_SET_NOTAIL((duk_hobject *) h_res);
- }
-
- /*
- * Build function fixed size 'data' buffer, which contains bytecode,
- * constants, and inner function references.
- *
- * During the building phase 'data' is reachable but incomplete.
- * Only incref's occur during building (no refzero or GC happens),
- * so the building process is atomic.
- */
-
- consts_count = duk_hobject_get_length(thr, func->h_consts);
- funcs_count = duk_hobject_get_length(thr, func->h_funcs) / 3;
- code_count = DUK_BW_GET_SIZE(thr, &func->bw_code) / sizeof(duk_compiler_instr);
- code_size = code_count * sizeof(duk_instr_t);
-
- data_size = consts_count * sizeof(duk_tval) +
- funcs_count * sizeof(duk_hobject *) +
- code_size;
-
- DUK_DDD(DUK_DDDPRINT("consts_count=%ld, funcs_count=%ld, code_size=%ld -> "
- "data_size=%ld*%ld + %ld*%ld + %ld = %ld",
- (long) consts_count, (long) funcs_count, (long) code_size,
- (long) consts_count, (long) sizeof(duk_tval),
- (long) funcs_count, (long) sizeof(duk_hobject *),
- (long) code_size, (long) data_size));
-
- duk_push_fixed_buffer(ctx, data_size);
- h_data = (duk_hbuffer_fixed *) duk_get_hbuffer(ctx, -1);
- DUK_ASSERT(h_data != NULL);
-
- DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, h_res, (duk_hbuffer *) h_data);
- DUK_HEAPHDR_INCREF(thr, h_data);
-
- p_const = (duk_tval *) (void *) DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_data);
- for (i = 0; i < consts_count; i++) {
- DUK_ASSERT(i <= DUK_UARRIDX_MAX); /* const limits */
- tv = duk_hobject_find_existing_array_entry_tval_ptr(thr->heap, func->h_consts, (duk_uarridx_t) i);
- DUK_ASSERT(tv != NULL);
- DUK_TVAL_SET_TVAL(p_const, tv);
- p_const++;
- DUK_TVAL_INCREF(thr, tv); /* may be a string constant */
-
- DUK_DDD(DUK_DDDPRINT("constant: %!T", (duk_tval *) tv));
- }
-
- p_func = (duk_hobject **) p_const;
- DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, h_res, p_func);
- for (i = 0; i < funcs_count; i++) {
- duk_hobject *h;
- DUK_ASSERT(i * 3 <= DUK_UARRIDX_MAX); /* func limits */
- tv = duk_hobject_find_existing_array_entry_tval_ptr(thr->heap, func->h_funcs, (duk_uarridx_t) (i * 3));
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- h = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(h != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(h));
- *p_func++ = h;
- DUK_HOBJECT_INCREF(thr, h);
-
- DUK_DDD(DUK_DDDPRINT("inner function: %p -> %!iO",
- (void *) h, (duk_heaphdr *) h));
- }
-
- p_instr = (duk_instr_t *) p_func;
- DUK_HCOMPILEDFUNCTION_SET_BYTECODE(thr->heap, h_res, p_instr);
-
- /* copy bytecode instructions one at a time */
- q_instr = (duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(thr, &func->bw_code);
- for (i = 0; i < code_count; i++) {
- p_instr[i] = q_instr[i].ins;
- }
- /* Note: 'q_instr' is still used below */
-
- DUK_ASSERT((duk_uint8_t *) (p_instr + code_count) == DUK_HBUFFER_FIXED_GET_DATA_PTR(thr->heap, h_data) + data_size);
-
- duk_pop(ctx); /* 'data' (and everything in it) is reachable through h_res now */
-
- /*
- * Init object properties
- *
- * Properties should be added in decreasing order of access frequency.
- * (Not very critical for function templates.)
- */
-
- DUK_DDD(DUK_DDDPRINT("init function properties"));
-
- /* [ ... res ] */
-
- /* _Varmap: omitted if function is guaranteed not to do slow path identifier
- * accesses or if it would turn out to be empty of actual register mappings
- * after a cleanup. When debugging is enabled, we always need the varmap to
- * be able to lookup variables at any point.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (1) {
-#else
- if (func->id_access_slow || /* directly uses slow accesses */
- func->may_direct_eval || /* may indirectly slow access through a direct eval */
- funcs_count > 0) { /* has inner functions which may slow access (XXX: this can be optimized by looking at the inner functions) */
-#endif
- duk_int_t num_used;
- duk_dup(ctx, func->varmap_idx);
- num_used = duk__cleanup_varmap(comp_ctx);
- DUK_DDD(DUK_DDDPRINT("cleaned up varmap: %!T (num_used=%ld)",
- (duk_tval *) duk_get_tval(ctx, -1), (long) num_used));
-
- if (num_used > 0) {
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_VARMAP, DUK_PROPDESC_FLAGS_NONE);
- } else {
- DUK_DDD(DUK_DDDPRINT("varmap is empty after cleanup -> no need to add"));
- duk_pop(ctx);
- }
- }
-
- /* _Formals: omitted if function is guaranteed not to need a (non-strict) arguments object */
- if (1) {
- /* XXX: Add a proper condition. If formals list is omitted, recheck
- * handling for 'length' in duk_js_push_closure(); it currently relies
- * on _Formals being set. Removal may need to be conditional to debugging
- * being enabled/disabled too.
- */
- duk_dup(ctx, func->argnames_idx);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_FORMALS, DUK_PROPDESC_FLAGS_NONE);
- }
-
- /* name */
- if (func->h_name) {
- duk_push_hstring(ctx, func->h_name);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE);
- }
-
- /* _Source */
-#if defined(DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY)
- if (0) {
- /* XXX: Currently function source code is not stored, as it is not
- * required by the standard. Source code should not be stored by
- * default (user should enable it explicitly), and the source should
- * probably be compressed with a trivial text compressor; average
- * compression of 20-30% is quite easy to achieve even with a trivial
- * compressor (RLE + backwards lookup).
- *
- * Debugging needs source code to be useful: sometimes input code is
- * not found in files as it may be generated and then eval()'d, given
- * by dynamic C code, etc.
- *
- * Other issues:
- *
- * - Need tokenizer indices for start and end to substring
- * - Always normalize function declaration part?
- * - If we keep _Formals, only need to store body
- */
-
- /*
- * For global or eval code this is straightforward. For functions
- * created with the Function constructor we only get the source for
- * the body and must manufacture the "function ..." part.
- *
- * For instance, for constructed functions (v8):
- *
- * > a = new Function("foo", "bar", "print(foo)");
- * [Function]
- * > a.toString()
- * 'function anonymous(foo,bar) {\nprint(foo)\n}'
- *
- * Similarly for e.g. getters (v8):
- *
- * > x = { get a(foo,bar) { print(foo); } }
- * { a: [Getter] }
- * > Object.getOwnPropertyDescriptor(x, 'a').get.toString()
- * 'function a(foo,bar) { print(foo); }'
- */
-
-#if 0
- duk_push_string(ctx, "XXX");
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_SOURCE, DUK_PROPDESC_FLAGS_NONE);
-#endif
- }
-#endif /* DUK_USE_NONSTD_FUNC_SOURCE_PROPERTY */
-
- /* _Pc2line */
-#if defined(DUK_USE_PC2LINE)
- if (1) {
- /*
- * Size-optimized pc->line mapping.
- */
-
- DUK_ASSERT(code_count <= DUK_COMPILER_MAX_BYTECODE_LENGTH);
- duk_hobject_pc2line_pack(thr, q_instr, (duk_uint_fast32_t) code_count); /* -> pushes fixed buffer */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_INT_PC2LINE, DUK_PROPDESC_FLAGS_NONE);
-
- /* XXX: if assertions enabled, walk through all valid PCs
- * and check line mapping.
- */
- }
-#endif /* DUK_USE_PC2LINE */
-
- /* fileName */
- if (comp_ctx->h_filename) {
- /*
- * Source filename (or equivalent), for identifying thrown errors.
- */
-
- duk_push_hstring(ctx, comp_ctx->h_filename);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_FILE_NAME, DUK_PROPDESC_FLAGS_NONE);
- }
-
- /*
- * Init remaining result fields
- *
- * 'nregs' controls how large a register frame is allocated.
- *
- * 'nargs' controls how many formal arguments are written to registers:
- * r0, ... r(nargs-1). The remaining registers are initialized to
- * undefined.
- */
-
- DUK_ASSERT(func->temp_max >= 0);
- h_res->nregs = (duk_uint16_t) func->temp_max;
- h_res->nargs = (duk_uint16_t) duk_hobject_get_length(thr, func->h_argnames);
- DUK_ASSERT(h_res->nregs >= h_res->nargs); /* pass2 allocation handles this */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- h_res->start_line = (duk_uint32_t) func->min_line;
- h_res->end_line = (duk_uint32_t) func->max_line;
-#endif
-
- DUK_DD(DUK_DDPRINT("converted function: %!ixT",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /*
- * Compact the function template.
- */
-
- duk_compact(ctx, -1);
-
- /*
- * Debug dumping
- */
-
-#ifdef DUK_USE_DDDPRINT
- {
- duk_hcompiledfunction *h;
- duk_instr_t *p, *p_start, *p_end;
-
- h = (duk_hcompiledfunction *) duk_get_hobject(ctx, -1);
- p_start = (duk_instr_t *) DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, h);
- p_end = (duk_instr_t *) DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, h);
-
- p = p_start;
- while (p < p_end) {
- DUK_DDD(DUK_DDDPRINT("BC %04ld: %!I ; 0x%08lx op=%ld (%!C) a=%ld b=%ld c=%ld",
- (long) (p - p_start),
- (duk_instr_t) (*p),
- (unsigned long) (*p),
- (long) DUK_DEC_OP(*p),
- (long) DUK_DEC_OP(*p),
- (long) DUK_DEC_A(*p),
- (long) DUK_DEC_B(*p),
- (long) DUK_DEC_C(*p)));
- p++;
- }
- }
-#endif
-}
-
-/*
- * Code emission helpers
- *
- * Some emission helpers understand the range of target and source reg/const
- * values and automatically emit shuffling code if necessary. This is the
- * case when the slot in question (A, B, C) is used in the standard way and
- * for opcodes the emission helpers explicitly understand (like DUK_OP_CALL).
- *
- * The standard way is that:
- * - slot A is a target register
- * - slot B is a source register/constant
- * - slot C is a source register/constant
- *
- * If a slot is used in a non-standard way the caller must indicate this
- * somehow. If a slot is used as a target instead of a source (or vice
- * versa), this can be indicated with a flag to trigger proper shuffling
- * (e.g. DUK__EMIT_FLAG_B_IS_TARGET). If the value in the slot is not
- * register/const related at all, the caller must ensure that the raw value
- * fits into the corresponding slot so as to not trigger shuffling. The
- * caller must set a "no shuffle" flag to ensure compilation fails if
- * shuffling were to be triggered because of an internal error.
- *
- * For slots B and C the raw slot size is 9 bits but one bit is reserved for
- * the reg/const indicator. To use the full 9-bit range for a raw value,
- * shuffling must be disabled with the DUK__EMIT_FLAG_NO_SHUFFLE_{B,C} flag.
- * Shuffling is only done for A, B, and C slots, not the larger BC or ABC slots.
- *
- * There is call handling specific understanding in the A-B-C emitter to
- * convert call setup and call instructions into indirect ones if necessary.
- */
-
-/* Code emission flags, passed in the 'opcode' field. Opcode + flags
- * fit into 16 bits for now, so use duk_small_uint.t.
- */
-#define DUK__EMIT_FLAG_NO_SHUFFLE_A (1 << 8)
-#define DUK__EMIT_FLAG_NO_SHUFFLE_B (1 << 9)
-#define DUK__EMIT_FLAG_NO_SHUFFLE_C (1 << 10)
-#define DUK__EMIT_FLAG_A_IS_SOURCE (1 << 11) /* slot A is a source (default: target) */
-#define DUK__EMIT_FLAG_B_IS_TARGET (1 << 12) /* slot B is a target (default: source) */
-#define DUK__EMIT_FLAG_C_IS_TARGET (1 << 13) /* slot C is a target (default: source) */
-#define DUK__EMIT_FLAG_B_IS_TARGETSOURCE (1 << 14) /* slot B is both a target and a source (used by extraops like DUK_EXTRAOP_INSTOF */
-#define DUK__EMIT_FLAG_RESERVE_JUMPSLOT (1 << 15) /* reserve a jumpslot after instr before target spilling, used for NEXTENUM */
-
-/* XXX: clarify on when and where DUK__CONST_MARKER is allowed */
-/* XXX: opcode specific assertions on when consts are allowed */
-
-/* XXX: macro smaller than call? */
-DUK_LOCAL duk_int_t duk__get_current_pc(duk_compiler_ctx *comp_ctx) {
- duk_compiler_func *func;
- func = &comp_ctx->curr_func;
- return (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &func->bw_code) / sizeof(duk_compiler_instr));
-}
-
-DUK_LOCAL duk_compiler_instr *duk__get_instr_ptr(duk_compiler_ctx *comp_ctx, duk_int_t pc) {
- DUK_ASSERT(pc >= 0);
- DUK_ASSERT((duk_size_t) pc < (duk_size_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr)));
- return ((duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code)) + pc;
-}
-
-/* emit instruction; could return PC but that's not needed in the majority
- * of cases.
- */
-DUK_LOCAL void duk__emit(duk_compiler_ctx *comp_ctx, duk_instr_t ins) {
-#if defined(DUK_USE_PC2LINE)
- duk_int_t line;
-#endif
- duk_compiler_instr *instr;
-
- DUK_DDD(DUK_DDDPRINT("duk__emit: 0x%08lx curr_token.start_line=%ld prev_token.start_line=%ld pc=%ld --> %!I",
- (unsigned long) ins,
- (long) comp_ctx->curr_token.start_line,
- (long) comp_ctx->prev_token.start_line,
- (long) duk__get_current_pc(comp_ctx),
- (duk_instr_t) ins));
-
- instr = (duk_compiler_instr *) (void *) DUK_BW_ENSURE_GETPTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code, sizeof(duk_compiler_instr));
- DUK_BW_ADD_PTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code, sizeof(duk_compiler_instr));
-
-#if defined(DUK_USE_PC2LINE)
- /* The line number tracking is a bit inconsistent right now, which
- * affects debugger accuracy. Mostly call sites emit opcodes when
- * they have parsed a token (say a terminating semicolon) and called
- * duk__advance(). In this case the line number of the previous
- * token is the most accurate one (except in prologue where
- * prev_token.start_line is 0). This is probably not 100% correct
- * right now.
- */
- /* approximation, close enough */
- line = comp_ctx->prev_token.start_line;
- if (line == 0) {
- line = comp_ctx->curr_token.start_line;
- }
-#endif
-
- instr->ins = ins;
-#if defined(DUK_USE_PC2LINE)
- instr->line = line;
-#endif
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (line < comp_ctx->curr_func.min_line) {
- comp_ctx->curr_func.min_line = line;
- }
- if (line > comp_ctx->curr_func.max_line) {
- comp_ctx->curr_func.max_line = line;
- }
-#endif
-
- /* Limit checks for bytecode byte size and line number. */
- if (DUK_UNLIKELY(DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) > DUK_USE_ESBC_MAX_BYTES)) {
- goto fail_bc_limit;
- }
-#if defined(DUK_USE_PC2LINE) && defined(DUK_USE_ESBC_LIMITS)
-#if defined(DUK_USE_BUFLEN16)
- /* Buffer length is bounded to 0xffff automatically, avoid compile warning. */
- if (DUK_UNLIKELY(line > DUK_USE_ESBC_MAX_LINENUMBER)) {
- goto fail_bc_limit;
- }
-#else
- if (DUK_UNLIKELY(line > DUK_USE_ESBC_MAX_LINENUMBER)) {
- goto fail_bc_limit;
- }
-#endif
-#endif
-
- return;
-
- fail_bc_limit:
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_BYTECODE_LIMIT);
-}
-
-/* Update function min/max line from current token. Needed to improve
- * function line range information for debugging, so that e.g. opening
- * curly brace is covered by line range even when no opcodes are emitted
- * for the line containing the brace.
- */
-DUK_LOCAL void duk__update_lineinfo_currtoken(duk_compiler_ctx *comp_ctx) {
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- duk_int_t line;
-
- line = comp_ctx->curr_token.start_line;
- if (line == 0) {
- return;
- }
- if (line < comp_ctx->curr_func.min_line) {
- comp_ctx->curr_func.min_line = line;
- }
- if (line > comp_ctx->curr_func.max_line) {
- comp_ctx->curr_func.max_line = line;
- }
-#else
- DUK_UNREF(comp_ctx);
-#endif
-}
-
-#if 0 /* unused */
-DUK_LOCAL void duk__emit_op_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t op) {
- duk__emit(comp_ctx, DUK_ENC_OP_ABC(op, 0));
-}
-#endif
-
-/* Important main primitive. */
-DUK_LOCAL void duk__emit_a_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b, duk_regconst_t c) {
- duk_instr_t ins = 0;
- duk_int_t a_out = -1;
- duk_int_t b_out = -1;
- duk_int_t c_out = -1;
- duk_int_t tmp;
-
- DUK_DDD(DUK_DDDPRINT("emit: op_flags=%04lx, a=%ld, b=%ld, c=%ld",
- (unsigned long) op_flags, (long) a, (long) b, (long) c));
-
- /* We could rely on max temp/const checks: if they don't exceed BC
- * limit, nothing here can either (just asserts would be enough).
- * Currently we check for the limits, which provides additional
- * protection against creating invalid bytecode due to compiler
- * bugs.
- */
-
- DUK_ASSERT_DISABLE((op_flags & 0xff) >= DUK_BC_OP_MIN); /* unsigned */
- DUK_ASSERT((op_flags & 0xff) <= DUK_BC_OP_MAX);
-
- /* Input shuffling happens before the actual operation, while output
- * shuffling happens afterwards. Output shuffling decisions are still
- * made at the same time to reduce branch clutter; output shuffle decisions
- * are recorded into X_out variables.
- */
-
- /* Slot A */
-
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (a <= DUK_BC_A_MAX && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A)) {
-#else
- if (a <= DUK_BC_A_MAX) {
-#endif
- ;
- } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A) {
- DUK_D(DUK_DPRINT("out of regs: 'a' (reg) needs shuffling but shuffle prohibited, a: %ld", (long) a));
- goto error_outofregs;
- } else if (a <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle1;
- if (op_flags & DUK__EMIT_FLAG_A_IS_SOURCE) {
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, a));
- } else {
- duk_small_int_t op = op_flags & 0xff;
- if (op == DUK_OP_CSVAR || op == DUK_OP_CSREG || op == DUK_OP_CSPROP) {
- /* Special handling for call setup instructions. The target
- * is expressed indirectly, but there is no output shuffling.
- */
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_A_IS_SOURCE) == 0);
- duk__emit_load_int32_noshuffle(comp_ctx, tmp, a);
- DUK_ASSERT(DUK_OP_CSVARI == DUK_OP_CSVAR + 1);
- DUK_ASSERT(DUK_OP_CSREGI == DUK_OP_CSREG + 1);
- DUK_ASSERT(DUK_OP_CSPROPI == DUK_OP_CSPROP + 1);
- op_flags++; /* indirect opcode follows direct */
- } else {
- /* Output shuffle needed after main operation */
- a_out = a;
- }
- }
- a = tmp;
- } else {
- DUK_D(DUK_DPRINT("out of regs: 'a' (reg) needs shuffling but does not fit into BC, a: %ld", (long) a));
- goto error_outofregs;
- }
-
- /* Slot B */
-
- if (b & DUK__CONST_MARKER) {
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B) == 0);
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_B_IS_TARGET) == 0);
- DUK_ASSERT((op_flags & 0xff) != DUK_OP_CALL);
- DUK_ASSERT((op_flags & 0xff) != DUK_OP_NEW);
- b = b & ~DUK__CONST_MARKER;
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (0) {
-#else
- if (b <= 0xff) {
-#endif
- ins |= DUK_ENC_OP_A_B_C(0, 0, 0x100, 0); /* const flag for B */
- } else if (b <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle2;
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDCONST, tmp, b));
- b = tmp;
- } else {
- DUK_D(DUK_DPRINT("out of regs: 'b' (const) needs shuffling but does not fit into BC, b: %ld", (long) b));
- goto error_outofregs;
- }
- } else {
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (b <= 0xff && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B)) {
-#else
- if (b <= 0xff) {
-#endif
- ;
- } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_B) {
- if (b > DUK_BC_B_MAX) {
- /* Note: 0xff != DUK_BC_B_MAX */
- DUK_D(DUK_DPRINT("out of regs: 'b' (reg) needs shuffling but shuffle prohibited, b: %ld", (long) b));
- goto error_outofregs;
- }
- } else if (b <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle2;
- if (op_flags & DUK__EMIT_FLAG_B_IS_TARGET) {
- /* Output shuffle needed after main operation */
- b_out = b;
- }
- if (!(op_flags & DUK__EMIT_FLAG_B_IS_TARGET) || (op_flags & DUK__EMIT_FLAG_B_IS_TARGETSOURCE)) {
- duk_small_int_t op = op_flags & 0xff;
- if (op == DUK_OP_CALL || op == DUK_OP_NEW ||
- op == DUK_OP_MPUTOBJ || op == DUK_OP_MPUTARR) {
- /* Special handling for CALL/NEW/MPUTOBJ/MPUTARR shuffling.
- * For each, slot B identifies the first register of a range
- * of registers, so normal shuffling won't work. Instead,
- * an indirect version of the opcode is used.
- */
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_B_IS_TARGET) == 0);
- duk__emit_load_int32_noshuffle(comp_ctx, tmp, b);
- DUK_ASSERT(DUK_OP_CALLI == DUK_OP_CALL + 1);
- DUK_ASSERT(DUK_OP_NEWI == DUK_OP_NEW + 1);
- DUK_ASSERT(DUK_OP_MPUTOBJI == DUK_OP_MPUTOBJ + 1);
- DUK_ASSERT(DUK_OP_MPUTARRI == DUK_OP_MPUTARR + 1);
- op_flags++; /* indirect opcode follows direct */
- } else {
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, b));
- }
- }
- b = tmp;
- } else {
- DUK_D(DUK_DPRINT("out of regs: 'b' (reg) needs shuffling but does not fit into BC, b: %ld", (long) b));
- goto error_outofregs;
- }
- }
-
- /* Slot C */
-
- if (c & DUK__CONST_MARKER) {
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C) == 0);
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_C_IS_TARGET) == 0);
- c = c & ~DUK__CONST_MARKER;
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (0) {
-#else
- if (c <= 0xff) {
-#endif
- ins |= DUK_ENC_OP_A_B_C(0, 0, 0, 0x100); /* const flag for C */
- } else if (c <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle3;
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDCONST, tmp, c));
- c = tmp;
- } else {
- DUK_D(DUK_DPRINT("out of regs: 'c' (const) needs shuffling but does not fit into BC, c: %ld", (long) c));
- goto error_outofregs;
- }
- } else {
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (c <= 0xff && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C)) {
-#else
- if (c <= 0xff) {
-#endif
- ;
- } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_C) {
- if (c > DUK_BC_C_MAX) {
- /* Note: 0xff != DUK_BC_C_MAX */
- DUK_D(DUK_DPRINT("out of regs: 'c' (reg) needs shuffling but shuffle prohibited, c: %ld", (long) c));
- goto error_outofregs;
- }
- } else if (c <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle3;
- if (op_flags & DUK__EMIT_FLAG_C_IS_TARGET) {
- /* Output shuffle needed after main operation */
- c_out = c;
- } else {
- duk_small_int_t op = op_flags & 0xff;
- if (op == DUK_OP_EXTRA &&
- (a == DUK_EXTRAOP_INITGET || a == DUK_EXTRAOP_INITSET)) {
- /* Special shuffling for INITGET/INITSET, where slot C
- * identifies a register pair and cannot be shuffled
- * normally. Use an indirect variant instead.
- */
- DUK_ASSERT((op_flags & DUK__EMIT_FLAG_C_IS_TARGET) == 0);
- duk__emit_load_int32_noshuffle(comp_ctx, tmp, c);
- DUK_ASSERT(DUK_EXTRAOP_INITGETI == DUK_EXTRAOP_INITGET + 1);
- DUK_ASSERT(DUK_EXTRAOP_INITSETI == DUK_EXTRAOP_INITSET + 1);
- a++; /* indirect opcode follows direct */
- } else {
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, c));
- }
- }
- c = tmp;
- } else {
- DUK_D(DUK_DPRINT("out of regs: 'c' (reg) needs shuffling but does not fit into BC, c: %ld", (long) c));
- goto error_outofregs;
- }
- }
-
- /* Main operation */
-
- DUK_ASSERT_DISABLE(a >= DUK_BC_A_MIN); /* unsigned */
- DUK_ASSERT(a <= DUK_BC_A_MAX);
- DUK_ASSERT_DISABLE(b >= DUK_BC_B_MIN); /* unsigned */
- DUK_ASSERT(b <= DUK_BC_B_MAX);
- DUK_ASSERT_DISABLE(c >= DUK_BC_C_MIN); /* unsigned */
- DUK_ASSERT(c <= DUK_BC_C_MAX);
-
- ins |= DUK_ENC_OP_A_B_C(op_flags & 0xff, a, b, c);
- duk__emit(comp_ctx, ins);
-
- /* NEXTENUM needs a jump slot right after the main instruction.
- * When the JUMP is taken, output spilling is not needed so this
- * workaround is possible. The jump slot PC is exceptionally
- * plumbed through comp_ctx to minimize call sites.
- */
- if (op_flags & DUK__EMIT_FLAG_RESERVE_JUMPSLOT) {
- comp_ctx->emit_jumpslot_pc = duk__get_current_pc(comp_ctx);
- duk__emit_abc(comp_ctx, DUK_OP_JUMP, 0);
- }
-
- /* Output shuffling: only one output register is realistically possible.
- *
- * (Zero would normally be an OK marker value: if the target register
- * was zero, it would never be shuffled. But with DUK_USE_SHUFFLE_TORTURE
- * this is no longer true, so use -1 as a marker instead.)
- */
-
- if (a_out >= 0) {
- DUK_ASSERT(b_out < 0);
- DUK_ASSERT(c_out < 0);
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, a, a_out));
- } else if (b_out >= 0) {
- DUK_ASSERT(a_out < 0);
- DUK_ASSERT(c_out < 0);
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, b, b_out));
- } else if (c_out >= 0) {
- DUK_ASSERT(b_out < 0);
- DUK_ASSERT(c_out < 0);
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, c, c_out));
- }
-
- return;
-
- error_outofregs:
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT);
-}
-
-DUK_LOCAL void duk__emit_a_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t b) {
- duk__emit_a_b_c(comp_ctx, op_flags | DUK__EMIT_FLAG_NO_SHUFFLE_C, a, b, 0);
-}
-
-#if 0 /* unused */
-DUK_LOCAL void duk__emit_a(duk_compiler_ctx *comp_ctx, int op_flags, int a) {
- duk__emit_a_b_c(comp_ctx, op_flags | DUK__EMIT_FLAG_NO_SHUFFLE_B | DUK__EMIT_FLAG_NO_SHUFFLE_C, a, 0, 0);
-}
-#endif
-
-DUK_LOCAL void duk__emit_a_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op_flags, duk_regconst_t a, duk_regconst_t bc) {
- duk_instr_t ins;
- duk_int_t tmp;
-
- /* allow caller to give a const number with the DUK__CONST_MARKER */
- bc = bc & (~DUK__CONST_MARKER);
-
- DUK_ASSERT_DISABLE((op_flags & 0xff) >= DUK_BC_OP_MIN); /* unsigned */
- DUK_ASSERT((op_flags & 0xff) <= DUK_BC_OP_MAX);
- DUK_ASSERT_DISABLE(bc >= DUK_BC_BC_MIN); /* unsigned */
- DUK_ASSERT(bc <= DUK_BC_BC_MAX);
- DUK_ASSERT((bc & DUK__CONST_MARKER) == 0);
-
- if (bc <= DUK_BC_BC_MAX) {
- ;
- } else {
- /* No BC shuffling now. */
- goto error_outofregs;
- }
-
-#if defined(DUK_USE_SHUFFLE_TORTURE)
- if (a <= DUK_BC_A_MAX && (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A)) {
-#else
- if (a <= DUK_BC_A_MAX) {
-#endif
- ins = DUK_ENC_OP_A_BC(op_flags & 0xff, a, bc);
- duk__emit(comp_ctx, ins);
- } else if (op_flags & DUK__EMIT_FLAG_NO_SHUFFLE_A) {
- goto error_outofregs;
- } else if (a <= DUK_BC_BC_MAX) {
- comp_ctx->curr_func.needs_shuffle = 1;
- tmp = comp_ctx->curr_func.shuffle1;
- ins = DUK_ENC_OP_A_BC(op_flags & 0xff, tmp, bc);
- if (op_flags & DUK__EMIT_FLAG_A_IS_SOURCE) {
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_LDREG, tmp, a));
- duk__emit(comp_ctx, ins);
- } else {
- duk__emit(comp_ctx, ins);
- duk__emit(comp_ctx, DUK_ENC_OP_A_BC(DUK_OP_STREG, tmp, a));
- }
- } else {
- goto error_outofregs;
- }
- return;
-
- error_outofregs:
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT);
-}
-
-DUK_LOCAL void duk__emit_abc(duk_compiler_ctx *comp_ctx, duk_small_uint_t op, duk_regconst_t abc) {
- duk_instr_t ins;
-
- DUK_ASSERT_DISABLE(op >= DUK_BC_OP_MIN); /* unsigned */
- DUK_ASSERT(op <= DUK_BC_OP_MAX);
- DUK_ASSERT_DISABLE(abc >= DUK_BC_ABC_MIN); /* unsigned */
- DUK_ASSERT(abc <= DUK_BC_ABC_MAX);
- DUK_ASSERT((abc & DUK__CONST_MARKER) == 0);
-
- if (abc <= DUK_BC_ABC_MAX) {
- ;
- } else {
- goto error_outofregs;
- }
- ins = DUK_ENC_OP_ABC(op, abc);
- DUK_DDD(DUK_DDDPRINT("duk__emit_abc: 0x%08lx line=%ld pc=%ld op=%ld (%!C) abc=%ld (%!I)",
- (unsigned long) ins, (long) comp_ctx->curr_token.start_line,
- (long) duk__get_current_pc(comp_ctx), (long) op, (long) op,
- (long) abc, (duk_instr_t) ins));
- duk__emit(comp_ctx, ins);
- return;
-
- error_outofregs:
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT);
-}
-
-DUK_LOCAL void duk__emit_extraop_b_c(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags, duk_regconst_t b, duk_regconst_t c) {
- DUK_ASSERT_DISABLE((extraop_flags & 0xff) >= DUK_BC_EXTRAOP_MIN); /* unsigned */
- DUK_ASSERT((extraop_flags & 0xff) <= DUK_BC_EXTRAOP_MAX);
- /* Setting "no shuffle A" is covered by the assert, but it's needed
- * with DUK_USE_SHUFFLE_TORTURE.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_EXTRA | DUK__EMIT_FLAG_NO_SHUFFLE_A | (extraop_flags & ~0xff), /* transfer flags */
- extraop_flags & 0xff,
- b,
- c);
-}
-
-DUK_LOCAL void duk__emit_extraop_b(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags, duk_regconst_t b) {
- DUK_ASSERT_DISABLE((extraop_flags & 0xff) >= DUK_BC_EXTRAOP_MIN); /* unsigned */
- DUK_ASSERT((extraop_flags & 0xff) <= DUK_BC_EXTRAOP_MAX);
- /* Setting "no shuffle A" is covered by the assert, but it's needed
- * with DUK_USE_SHUFFLE_TORTURE.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_EXTRA | DUK__EMIT_FLAG_NO_SHUFFLE_A | (extraop_flags & ~0xff), /* transfer flags */
- extraop_flags & 0xff,
- b,
- 0);
-}
-
-DUK_LOCAL void duk__emit_extraop_bc(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop, duk_regconst_t bc) {
- DUK_ASSERT_DISABLE(extraop >= DUK_BC_EXTRAOP_MIN); /* unsigned */
- DUK_ASSERT(extraop <= DUK_BC_EXTRAOP_MAX);
- /* Setting "no shuffle A" is covered by the assert, but it's needed
- * with DUK_USE_SHUFFLE_TORTURE.
- */
- duk__emit_a_bc(comp_ctx,
- DUK_OP_EXTRA | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- extraop,
- bc);
-}
-
-DUK_LOCAL void duk__emit_extraop_only(duk_compiler_ctx *comp_ctx, duk_small_uint_t extraop_flags) {
- DUK_ASSERT_DISABLE((extraop_flags & 0xff) >= DUK_BC_EXTRAOP_MIN); /* unsigned */
- DUK_ASSERT((extraop_flags & 0xff) <= DUK_BC_EXTRAOP_MAX);
- /* Setting "no shuffle A" is covered by the assert, but it's needed
- * with DUK_USE_SHUFFLE_TORTURE.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_EXTRA | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_B |
- DUK__EMIT_FLAG_NO_SHUFFLE_C | (extraop_flags & ~0xff), /* transfer flags */
- extraop_flags & 0xff,
- 0,
- 0);
-}
-
-DUK_LOCAL void duk__emit_load_int32_raw(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val, duk_small_uint_t op_flags) {
- /* XXX: Shuffling support could be implemented here so that LDINT+LDINTX
- * would only shuffle once (instead of twice). The current code works
- * though, and has a smaller compiler footprint.
- */
-
- if ((val >= (duk_int32_t) DUK_BC_BC_MIN - (duk_int32_t) DUK_BC_LDINT_BIAS) &&
- (val <= (duk_int32_t) DUK_BC_BC_MAX - (duk_int32_t) DUK_BC_LDINT_BIAS)) {
- DUK_DDD(DUK_DDDPRINT("emit LDINT to reg %ld for %ld", (long) reg, (long) val));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDINT | op_flags, reg, (duk_regconst_t) (val + (duk_int32_t) DUK_BC_LDINT_BIAS));
- } else {
- duk_int32_t hi = val >> DUK_BC_LDINTX_SHIFT;
- duk_int32_t lo = val & ((((duk_int32_t) 1) << DUK_BC_LDINTX_SHIFT) - 1);
- DUK_ASSERT(lo >= 0);
- DUK_DDD(DUK_DDDPRINT("emit LDINT+LDINTX to reg %ld for %ld -> hi %ld, lo %ld",
- (long) reg, (long) val, (long) hi, (long) lo));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDINT | op_flags, reg, (duk_regconst_t) (hi + (duk_int32_t) DUK_BC_LDINT_BIAS));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDINTX | op_flags, reg, (duk_regconst_t) lo);
- }
-}
-
-DUK_LOCAL void duk__emit_load_int32(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val) {
- duk__emit_load_int32_raw(comp_ctx, reg, val, 0 /*op_flags*/);
-}
-
-#if defined(DUK_USE_SHUFFLE_TORTURE)
-/* Used by duk__emit*() calls so that we don't shuffle the loadints that
- * are needed to handle indirect opcodes.
- */
-DUK_LOCAL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val) {
- duk__emit_load_int32_raw(comp_ctx, reg, val, DUK__EMIT_FLAG_NO_SHUFFLE_A /*op_flags*/);
-}
-#else
-DUK_LOCAL void duk__emit_load_int32_noshuffle(duk_compiler_ctx *comp_ctx, duk_reg_t reg, duk_int32_t val) {
- /* When torture not enabled, can just use the same helper because
- * 'reg' won't get spilled.
- */
- DUK_ASSERT(reg <= DUK_BC_A_MAX);
- duk__emit_load_int32(comp_ctx, reg, val);
-}
-#endif
-
-DUK_LOCAL void duk__emit_jump(duk_compiler_ctx *comp_ctx, duk_int_t target_pc) {
- duk_int_t curr_pc;
- duk_int_t offset;
-
- curr_pc = (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr));
- offset = (duk_int_t) target_pc - (duk_int_t) curr_pc - 1;
- DUK_ASSERT(offset + DUK_BC_JUMP_BIAS >= DUK_BC_ABC_MIN);
- DUK_ASSERT(offset + DUK_BC_JUMP_BIAS <= DUK_BC_ABC_MAX);
- duk__emit_abc(comp_ctx, DUK_OP_JUMP, (duk_regconst_t) (offset + DUK_BC_JUMP_BIAS));
-}
-
-DUK_LOCAL duk_int_t duk__emit_jump_empty(duk_compiler_ctx *comp_ctx) {
- duk_int_t ret;
-
- ret = duk__get_current_pc(comp_ctx); /* useful for patching jumps later */
- duk__emit_abc(comp_ctx, DUK_OP_JUMP, 0);
- return ret;
-}
-
-/* Insert an empty jump in the middle of code emitted earlier. This is
- * currently needed for compiling for-in.
- */
-DUK_LOCAL void duk__insert_jump_entry(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc) {
-#if defined(DUK_USE_PC2LINE)
- duk_int_t line;
-#endif
- duk_compiler_instr *instr;
- duk_size_t offset;
-
- offset = jump_pc * sizeof(duk_compiler_instr),
- instr = (duk_compiler_instr *) (void *)
- DUK_BW_INSERT_ENSURE_AREA(comp_ctx->thr,
- &comp_ctx->curr_func.bw_code,
- offset,
- sizeof(duk_compiler_instr));
-
-#if defined(DUK_USE_PC2LINE)
- line = comp_ctx->curr_token.start_line; /* approximation, close enough */
-#endif
- instr->ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, 0);
-#if defined(DUK_USE_PC2LINE)
- instr->line = line;
-#endif
-
- DUK_BW_ADD_PTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code, sizeof(duk_compiler_instr));
- if (DUK_UNLIKELY(DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) > DUK_USE_ESBC_MAX_BYTES)) {
- goto fail_bc_limit;
- }
- return;
-
- fail_bc_limit:
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_BYTECODE_LIMIT);
-}
-
-/* Does not assume that jump_pc contains a DUK_OP_JUMP previously; this is intentional
- * to allow e.g. an INVALID opcode be overwritten with a JUMP (label management uses this).
- */
-DUK_LOCAL void duk__patch_jump(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc, duk_int_t target_pc) {
- duk_compiler_instr *instr;
- duk_int_t offset;
-
- /* allow negative PCs, behave as a no-op */
- if (jump_pc < 0) {
- DUK_DDD(DUK_DDDPRINT("duk__patch_jump(): nop call, jump_pc=%ld (<0), target_pc=%ld",
- (long) jump_pc, (long) target_pc));
- return;
- }
- DUK_ASSERT(jump_pc >= 0);
-
- /* XXX: range assert */
- instr = duk__get_instr_ptr(comp_ctx, jump_pc);
- DUK_ASSERT(instr != NULL);
-
- /* XXX: range assert */
- offset = target_pc - jump_pc - 1;
-
- instr->ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, offset + DUK_BC_JUMP_BIAS);
- DUK_DDD(DUK_DDDPRINT("duk__patch_jump(): jump_pc=%ld, target_pc=%ld, offset=%ld",
- (long) jump_pc, (long) target_pc, (long) offset));
-}
-
-DUK_LOCAL void duk__patch_jump_here(duk_compiler_ctx *comp_ctx, duk_int_t jump_pc) {
- duk__patch_jump(comp_ctx, jump_pc, duk__get_current_pc(comp_ctx));
-}
-
-DUK_LOCAL void duk__patch_trycatch(duk_compiler_ctx *comp_ctx, duk_int_t ldconst_pc, duk_int_t trycatch_pc, duk_regconst_t reg_catch, duk_regconst_t const_varname, duk_small_uint_t flags) {
- duk_compiler_instr *instr;
-
- DUK_ASSERT((reg_catch & DUK__CONST_MARKER) == 0);
-
- instr = duk__get_instr_ptr(comp_ctx, ldconst_pc);
- DUK_ASSERT(DUK_DEC_OP(instr->ins) == DUK_OP_LDCONST);
- DUK_ASSERT(instr != NULL);
- if (const_varname & DUK__CONST_MARKER) {
- /* Have a catch variable. */
- const_varname = const_varname & (~DUK__CONST_MARKER);
- if (reg_catch > DUK_BC_BC_MAX || const_varname > DUK_BC_BC_MAX) {
- /* Catch attempts to use out-of-range reg/const. Without this
- * check Duktape 0.12.0 could generate invalid code which caused
- * an assert failure on execution. This error is triggered e.g.
- * for functions with a lot of constants and a try-catch statement.
- * Shuffling or opcode semantics change is needed to fix the issue.
- * See: test-bug-trycatch-many-constants.js.
- */
- DUK_D(DUK_DPRINT("failed to patch trycatch: flags=%ld, reg_catch=%ld, const_varname=%ld (0x%08lx)",
- (long) flags, (long) reg_catch, (long) const_varname, (long) const_varname));
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_REG_LIMIT);
- }
- instr->ins |= DUK_ENC_OP_A_BC(0, 0, const_varname);
- } else {
- /* No catch variable, e.g. a try-finally; replace LDCONST with
- * NOP to avoid a bogus LDCONST.
- */
- instr->ins = DUK_ENC_OP_A(DUK_OP_EXTRA, DUK_EXTRAOP_NOP);
- }
-
- instr = duk__get_instr_ptr(comp_ctx, trycatch_pc);
- DUK_ASSERT(instr != NULL);
- DUK_ASSERT_DISABLE(flags >= DUK_BC_A_MIN);
- DUK_ASSERT(flags <= DUK_BC_A_MAX);
- instr->ins = DUK_ENC_OP_A_BC(DUK_OP_TRYCATCH, flags, reg_catch);
-}
-
-DUK_LOCAL void duk__emit_if_false_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst) {
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_IF | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_C,
- 0 /*false*/,
- regconst,
- 0 /*unused*/);
-}
-
-DUK_LOCAL void duk__emit_if_true_skip(duk_compiler_ctx *comp_ctx, duk_regconst_t regconst) {
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_IF | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_C,
- 1 /*true*/,
- regconst,
- 0 /*unused*/);
-}
-
-DUK_LOCAL void duk__emit_invalid(duk_compiler_ctx *comp_ctx) {
- duk__emit_extraop_bc(comp_ctx, DUK_EXTRAOP_INVALID, 0);
-}
-
-/*
- * Peephole optimizer for finished bytecode.
- *
- * Does not remove opcodes; currently only straightens out unconditional
- * jump chains which are generated by several control structures.
- */
-
-DUK_LOCAL void duk__peephole_optimize_bytecode(duk_compiler_ctx *comp_ctx) {
- duk_compiler_instr *bc;
- duk_small_uint_t iter;
- duk_int_t i, n;
- duk_int_t count_opt;
-
- bc = (duk_compiler_instr *) (void *) DUK_BW_GET_BASEPTR(comp_ctx->thr, &comp_ctx->curr_func.bw_code);
-#if defined(DUK_USE_BUFLEN16)
- /* No need to assert, buffer size maximum is 0xffff. */
-#else
- DUK_ASSERT((duk_size_t) DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr) <= (duk_size_t) DUK_INT_MAX); /* bytecode limits */
-#endif
- n = (duk_int_t) (DUK_BW_GET_SIZE(comp_ctx->thr, &comp_ctx->curr_func.bw_code) / sizeof(duk_compiler_instr));
-
- for (iter = 0; iter < DUK_COMPILER_PEEPHOLE_MAXITER; iter++) {
- count_opt = 0;
-
- for (i = 0; i < n; i++) {
- duk_instr_t ins;
- duk_int_t target_pc1;
- duk_int_t target_pc2;
-
- ins = bc[i].ins;
- if (DUK_DEC_OP(ins) != DUK_OP_JUMP) {
- continue;
- }
-
- target_pc1 = i + 1 + DUK_DEC_ABC(ins) - DUK_BC_JUMP_BIAS;
- DUK_DDD(DUK_DDDPRINT("consider jump at pc %ld; target_pc=%ld", (long) i, (long) target_pc1));
- DUK_ASSERT(target_pc1 >= 0);
- DUK_ASSERT(target_pc1 < n);
-
- /* Note: if target_pc1 == i, we'll optimize a jump to itself.
- * This does not need to be checked for explicitly; the case
- * is rare and max iter breaks us out.
- */
-
- ins = bc[target_pc1].ins;
- if (DUK_DEC_OP(ins) != DUK_OP_JUMP) {
- continue;
- }
-
- target_pc2 = target_pc1 + 1 + DUK_DEC_ABC(ins) - DUK_BC_JUMP_BIAS;
-
- DUK_DDD(DUK_DDDPRINT("optimizing jump at pc %ld; old target is %ld -> new target is %ld",
- (long) i, (long) target_pc1, (long) target_pc2));
-
- bc[i].ins = DUK_ENC_OP_ABC(DUK_OP_JUMP, target_pc2 - (i + 1) + DUK_BC_JUMP_BIAS);
-
- count_opt++;
- }
-
- DUK_DD(DUK_DDPRINT("optimized %ld jumps on peephole round %ld", (long) count_opt, (long) (iter + 1)));
-
- if (count_opt == 0) {
- break;
- }
- }
-}
-
-/*
- * Intermediate value helpers
- */
-
-#define DUK__ISREG(comp_ctx,x) (((x) & DUK__CONST_MARKER) == 0)
-#define DUK__ISCONST(comp_ctx,x) (((x) & DUK__CONST_MARKER) != 0)
-#define DUK__ISTEMP(comp_ctx,x) (DUK__ISREG((comp_ctx), (x)) && (duk_regconst_t) (x) >= (duk_regconst_t) ((comp_ctx)->curr_func.temp_first))
-#define DUK__GETTEMP(comp_ctx) ((comp_ctx)->curr_func.temp_next)
-#define DUK__SETTEMP(comp_ctx,x) ((comp_ctx)->curr_func.temp_next = (x)) /* dangerous: must only lower (temp_max not updated) */
-#define DUK__SETTEMP_CHECKMAX(comp_ctx,x) duk__settemp_checkmax((comp_ctx),(x))
-#define DUK__ALLOCTEMP(comp_ctx) duk__alloctemp((comp_ctx))
-#define DUK__ALLOCTEMPS(comp_ctx,count) duk__alloctemps((comp_ctx),(count))
-
-/* Flags for intermediate value coercions. A flag for using a forced reg
- * is not needed, the forced_reg argument suffices and generates better
- * code (it is checked as it is used).
- */
-#define DUK__IVAL_FLAG_ALLOW_CONST (1 << 0) /* allow a constant to be returned */
-#define DUK__IVAL_FLAG_REQUIRE_TEMP (1 << 1) /* require a (mutable) temporary as a result (or a const if allowed) */
-#define DUK__IVAL_FLAG_REQUIRE_SHORT (1 << 2) /* require a short (8-bit) reg/const which fits into bytecode B/C slot */
-
-/* XXX: some code might benefit from DUK__SETTEMP_IFTEMP(ctx,x) */
-
-#if 0 /* enable manually for dumping */
-#define DUK__DUMP_ISPEC(compctx,ispec) do { duk__dump_ispec((compctx), (ispec)); } while (0)
-#define DUK__DUMP_IVALUE(compctx,ivalue) do { duk__dump_ivalue((compctx), (ivalue)); } while (0)
-
-DUK_LOCAL void duk__dump_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *x) {
- DUK_D(DUK_DPRINT("ispec dump: t=%ld regconst=0x%08lx, valstack_idx=%ld, value=%!T",
- (long) x->t, (unsigned long) x->regconst, (long) x->valstack_idx,
- duk_get_tval((duk_context *) comp_ctx->thr, x->valstack_idx)));
-}
-DUK_LOCAL void duk__dump_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- DUK_D(DUK_DPRINT("ivalue dump: t=%ld op=%ld "
- "x1={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T} "
- "x2={t=%ld regconst=0x%08lx valstack_idx=%ld value=%!T}",
- (long) x->t, (long) x->op,
- (long) x->x1.t, (unsigned long) x->x1.regconst, (long) x->x1.valstack_idx,
- duk_get_tval((duk_context *) comp_ctx->thr, x->x1.valstack_idx),
- (long) x->x2.t, (unsigned long) x->x2.regconst, (long) x->x2.valstack_idx,
- duk_get_tval((duk_context *) comp_ctx->thr, x->x2.valstack_idx)));
-}
-#else
-#define DUK__DUMP_ISPEC(comp_ctx,x) do {} while (0)
-#define DUK__DUMP_IVALUE(comp_ctx,x) do {} while (0)
-#endif
-
-DUK_LOCAL void duk__copy_ispec(duk_compiler_ctx *comp_ctx, duk_ispec *src, duk_ispec *dst) {
- duk_context *ctx = (duk_context *) comp_ctx->thr;
-
- dst->t = src->t;
- dst->regconst = src->regconst;
- duk_copy(ctx, src->valstack_idx, dst->valstack_idx);
-}
-
-DUK_LOCAL void duk__copy_ivalue(duk_compiler_ctx *comp_ctx, duk_ivalue *src, duk_ivalue *dst) {
- duk_context *ctx = (duk_context *) comp_ctx->thr;
-
- dst->t = src->t;
- dst->op = src->op;
- dst->x1.t = src->x1.t;
- dst->x1.regconst = src->x1.regconst;
- dst->x2.t = src->x2.t;
- dst->x2.regconst = src->x2.regconst;
- duk_copy(ctx, src->x1.valstack_idx, dst->x1.valstack_idx);
- duk_copy(ctx, src->x2.valstack_idx, dst->x2.valstack_idx);
-}
-
-/* XXX: to util */
-DUK_LOCAL duk_bool_t duk__is_whole_get_int32(duk_double_t x, duk_int32_t *ival) {
- duk_small_int_t c;
- duk_int32_t t;
-
- c = DUK_FPCLASSIFY(x);
- if (c == DUK_FP_NORMAL || (c == DUK_FP_ZERO && !DUK_SIGNBIT(x))) {
- /* Don't allow negative zero as it will cause trouble with
- * LDINT+LDINTX. But positive zero is OK.
- */
- t = (duk_int32_t) x;
- if ((duk_double_t) t == x) {
- *ival = t;
- return 1;
- }
- }
-
- return 0;
-}
-
-DUK_LOCAL duk_reg_t duk__alloctemps(duk_compiler_ctx *comp_ctx, duk_small_int_t num) {
- duk_reg_t res;
-
- res = comp_ctx->curr_func.temp_next;
- comp_ctx->curr_func.temp_next += num;
-
- if (comp_ctx->curr_func.temp_next > DUK__MAX_TEMPS) { /* == DUK__MAX_TEMPS is OK */
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_TEMP_LIMIT);
- }
-
- /* maintain highest 'used' temporary, needed to figure out nregs of function */
- if (comp_ctx->curr_func.temp_next > comp_ctx->curr_func.temp_max) {
- comp_ctx->curr_func.temp_max = comp_ctx->curr_func.temp_next;
- }
-
- return res;
-}
-
-DUK_LOCAL duk_reg_t duk__alloctemp(duk_compiler_ctx *comp_ctx) {
- return duk__alloctemps(comp_ctx, 1);
-}
-
-DUK_LOCAL void duk__settemp_checkmax(duk_compiler_ctx *comp_ctx, duk_reg_t temp_next) {
- comp_ctx->curr_func.temp_next = temp_next;
- if (temp_next > comp_ctx->curr_func.temp_max) {
- comp_ctx->curr_func.temp_max = temp_next;
- }
-}
-
-/* get const for value at valstack top */
-DUK_LOCAL duk_regconst_t duk__getconst(duk_compiler_ctx *comp_ctx) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_compiler_func *f = &comp_ctx->curr_func;
- duk_tval *tv1;
- duk_int_t i, n, n_check;
-
- n = (duk_int_t) duk_get_length(ctx, f->consts_idx);
-
- tv1 = DUK_GET_TVAL_NEGIDX(ctx, -1);
- DUK_ASSERT(tv1 != NULL);
-
-#if defined(DUK_USE_FASTINT)
- /* Explicit check for fastint downgrade. */
- DUK_TVAL_CHKFAST_INPLACE(tv1);
-#endif
-
- /* Sanity workaround for handling functions with a large number of
- * constants at least somewhat reasonably. Otherwise checking whether
- * we already have the constant would grow very slow (as it is O(N^2)).
- */
- n_check = (n > DUK__GETCONST_MAX_CONSTS_CHECK ? DUK__GETCONST_MAX_CONSTS_CHECK : n);
- for (i = 0; i < n_check; i++) {
- duk_tval *tv2 = DUK_HOBJECT_A_GET_VALUE_PTR(thr->heap, f->h_consts, i);
-
- /* Strict equality is NOT enough, because we cannot use the same
- * constant for e.g. +0 and -0.
- */
- if (duk_js_samevalue(tv1, tv2)) {
- DUK_DDD(DUK_DDDPRINT("reused existing constant for %!T -> const index %ld",
- (duk_tval *) tv1, (long) i));
- duk_pop(ctx);
- return (duk_regconst_t) (i | DUK__CONST_MARKER);
- }
- }
-
- if (n > DUK__MAX_CONSTS) {
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_CONST_LIMIT);
- }
-
- DUK_DDD(DUK_DDDPRINT("allocating new constant for %!T -> const index %ld",
- (duk_tval *) tv1, (long) n));
- (void) duk_put_prop_index(ctx, f->consts_idx, n); /* invalidates tv1, tv2 */
- return (duk_regconst_t) (n | DUK__CONST_MARKER);
-}
-
-/* Get the value represented by an duk_ispec to a register or constant.
- * The caller can control the result by indicating whether or not:
- *
- * (1) a constant is allowed (sometimes the caller needs the result to
- * be in a register)
- *
- * (2) a temporary register is required (usually when caller requires
- * the register to be safely mutable; normally either a bound
- * register or a temporary register are both OK)
- *
- * (3) a forced register target needs to be used
- *
- * Bytecode may be emitted to generate the necessary value. The return
- * value is either a register or a constant.
- */
-
-DUK_LOCAL
-duk_regconst_t duk__ispec_toregconst_raw(duk_compiler_ctx *comp_ctx,
- duk_ispec *x,
- duk_reg_t forced_reg,
- duk_small_uint_t flags) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
-
- DUK_DDD(DUK_DDDPRINT("duk__ispec_toregconst_raw(): x={%ld:%ld:%!T}, "
- "forced_reg=%ld, flags 0x%08lx: allow_const=%ld require_temp=%ld require_short=%ld",
- (long) x->t,
- (long) x->regconst,
- (duk_tval *) duk_get_tval(ctx, x->valstack_idx),
- (long) forced_reg,
- (unsigned long) flags,
- (long) ((flags & DUK__IVAL_FLAG_ALLOW_CONST) ? 1 : 0),
- (long) ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) ? 1 : 0),
- (long) ((flags & DUK__IVAL_FLAG_REQUIRE_SHORT) ? 1 : 0)));
-
- switch (x->t) {
- case DUK_ISPEC_VALUE: {
- duk_tval *tv;
-
- tv = DUK_GET_TVAL_POSIDX(ctx, x->valstack_idx);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED: {
- /* Note: although there is no 'undefined' literal, undefined
- * values can occur during compilation as a result of e.g.
- * the 'void' operator.
- */
- duk_reg_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_extraop_bc(comp_ctx, DUK_EXTRAOP_LDUNDEF, (duk_regconst_t) dest);
- return (duk_regconst_t) dest;
- }
- case DUK_TAG_NULL: {
- duk_reg_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_extraop_bc(comp_ctx, DUK_EXTRAOP_LDNULL, (duk_regconst_t) dest);
- return (duk_regconst_t) dest;
- }
- case DUK_TAG_BOOLEAN: {
- duk_reg_t dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_extraop_bc(comp_ctx,
- (DUK_TVAL_GET_BOOLEAN(tv) ? DUK_EXTRAOP_LDTRUE : DUK_EXTRAOP_LDFALSE),
- (duk_regconst_t) dest);
- return (duk_regconst_t) dest;
- }
- case DUK_TAG_POINTER: {
- DUK_UNREACHABLE();
- break;
- }
- case DUK_TAG_STRING: {
- duk_hstring *h;
- duk_reg_t dest;
- duk_regconst_t constidx;
-
- h = DUK_TVAL_GET_STRING(tv);
- DUK_UNREF(h);
- DUK_ASSERT(h != NULL);
-
-#if 0 /* XXX: to be implemented? */
- /* Use special opcodes to load short strings */
- if (DUK_HSTRING_GET_BYTELEN(h) <= 2) {
- /* Encode into a single opcode (18 bits can encode 1-2 bytes + length indicator) */
- } else if (DUK_HSTRING_GET_BYTELEN(h) <= 6) {
- /* Encode into a double constant (53 bits can encode 6*8 = 48 bits + 3-bit length */
- }
-#endif
- duk_dup(ctx, x->valstack_idx);
- constidx = duk__getconst(comp_ctx);
-
- if (flags & DUK__IVAL_FLAG_ALLOW_CONST) {
- return constidx;
- }
-
- dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, constidx);
- return (duk_regconst_t) dest;
- }
- case DUK_TAG_OBJECT: {
- DUK_UNREACHABLE();
- break;
- }
- case DUK_TAG_BUFFER: {
- DUK_UNREACHABLE();
- break;
- }
- case DUK_TAG_LIGHTFUNC: {
- DUK_UNREACHABLE();
- break;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* number */
- duk_reg_t dest;
- duk_regconst_t constidx;
- duk_double_t dval;
- duk_int32_t ival;
-
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- dval = DUK_TVAL_GET_NUMBER(tv);
-
- if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) {
- /* A number can be loaded either through a constant, using
- * LDINT, or using LDINT+LDINTX. LDINT is always a size win,
- * LDINT+LDINTX is not if the constant is used multiple times.
- * Currently always prefer LDINT+LDINTX over a double constant.
- */
-
- if (duk__is_whole_get_int32(dval, &ival)) {
- dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_load_int32(comp_ctx, dest, ival);
- return (duk_regconst_t) dest;
- }
- }
-
- duk_dup(ctx, x->valstack_idx);
- constidx = duk__getconst(comp_ctx);
-
- if (flags & DUK__IVAL_FLAG_ALLOW_CONST) {
- return constidx;
- } else {
- dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, constidx);
- return (duk_regconst_t) dest;
- }
- }
- } /* end switch */
- }
- case DUK_ISPEC_REGCONST: {
- if (forced_reg >= 0) {
- if (x->regconst & DUK__CONST_MARKER) {
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, forced_reg, x->regconst);
- } else if (x->regconst != (duk_regconst_t) forced_reg) {
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, forced_reg, x->regconst);
- } else {
- ; /* already in correct reg */
- }
- return (duk_regconst_t) forced_reg;
- }
-
- DUK_ASSERT(forced_reg < 0);
- if (x->regconst & DUK__CONST_MARKER) {
- if (!(flags & DUK__IVAL_FLAG_ALLOW_CONST)) {
- duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, (duk_regconst_t) dest, x->regconst);
- return (duk_regconst_t) dest;
- }
- return x->regconst;
- }
-
- DUK_ASSERT(forced_reg < 0 && !(x->regconst & DUK__CONST_MARKER));
- if ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) && !DUK__ISTEMP(comp_ctx, x->regconst)) {
- duk_reg_t dest = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, (duk_regconst_t) dest, x->regconst);
- return (duk_regconst_t) dest;
- }
- return x->regconst;
- }
- default: {
- break;
- }
- }
-
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return 0;
-}
-
-DUK_LOCAL void duk__ispec_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ispec *x, duk_reg_t forced_reg) {
- DUK_ASSERT(forced_reg >= 0);
- (void) duk__ispec_toregconst_raw(comp_ctx, x, forced_reg, 0 /*flags*/);
-}
-
-/* Coerce an duk_ivalue to a 'plain' value by generating the necessary
- * arithmetic operations, property access, or variable access bytecode.
- * The duk_ivalue argument ('x') is converted into a plain value as a
- * side effect.
- */
-DUK_LOCAL void duk__ivalue_toplain_raw(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_reg_t forced_reg) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
-
- DUK_DDD(DUK_DDDPRINT("duk__ivalue_toplain_raw(): x={t=%ld,op=%ld,x1={%ld:%ld:%!T},x2={%ld:%ld:%!T}}, "
- "forced_reg=%ld",
- (long) x->t, (long) x->op,
- (long) x->x1.t, (long) x->x1.regconst,
- (duk_tval *) duk_get_tval(ctx, x->x1.valstack_idx),
- (long) x->x2.t, (long) x->x2.regconst,
- (duk_tval *) duk_get_tval(ctx, x->x2.valstack_idx),
- (long) forced_reg));
-
- switch (x->t) {
- case DUK_IVAL_PLAIN: {
- return;
- }
- /* XXX: support unary arithmetic ivalues (useful?) */
- case DUK_IVAL_ARITH:
- case DUK_IVAL_ARITH_EXTRAOP: {
- duk_regconst_t arg1;
- duk_regconst_t arg2;
- duk_reg_t dest;
- duk_tval *tv1;
- duk_tval *tv2;
-
- DUK_DDD(DUK_DDDPRINT("arith to plain conversion"));
-
- /* inline arithmetic check for constant values */
- /* XXX: use the exactly same arithmetic function here as in executor */
- if (x->x1.t == DUK_ISPEC_VALUE && x->x2.t == DUK_ISPEC_VALUE && x->t == DUK_IVAL_ARITH) {
- tv1 = DUK_GET_TVAL_POSIDX(ctx, x->x1.valstack_idx);
- tv2 = DUK_GET_TVAL_POSIDX(ctx, x->x2.valstack_idx);
- DUK_ASSERT(tv1 != NULL);
- DUK_ASSERT(tv2 != NULL);
-
- DUK_DDD(DUK_DDDPRINT("arith: tv1=%!T, tv2=%!T",
- (duk_tval *) tv1,
- (duk_tval *) tv2));
-
- if (DUK_TVAL_IS_NUMBER(tv1) && DUK_TVAL_IS_NUMBER(tv2)) {
- duk_double_t d1 = DUK_TVAL_GET_NUMBER(tv1);
- duk_double_t d2 = DUK_TVAL_GET_NUMBER(tv2);
- duk_double_t d3;
- duk_bool_t accept = 1;
-
- DUK_DDD(DUK_DDDPRINT("arith inline check: d1=%lf, d2=%lf, op=%ld",
- (double) d1, (double) d2, (long) x->op));
- switch (x->op) {
- case DUK_OP_ADD: d3 = d1 + d2; break;
- case DUK_OP_SUB: d3 = d1 - d2; break;
- case DUK_OP_MUL: d3 = d1 * d2; break;
- case DUK_OP_DIV: d3 = d1 / d2; break;
- default: accept = 0; break;
- }
-
- if (accept) {
- duk_double_union du;
- du.d = d3;
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- d3 = du.d;
-
- x->t = DUK_IVAL_PLAIN;
- DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE);
- DUK_TVAL_SET_NUMBER(tv1, d3); /* old value is number: no refcount */
- return;
- }
- } else if (x->op == DUK_OP_ADD && DUK_TVAL_IS_STRING(tv1) && DUK_TVAL_IS_STRING(tv2)) {
- /* inline string concatenation */
- duk_dup(ctx, x->x1.valstack_idx);
- duk_dup(ctx, x->x2.valstack_idx);
- duk_concat(ctx, 2);
- duk_replace(ctx, x->x1.valstack_idx);
- x->t = DUK_IVAL_PLAIN;
- DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE);
- return;
- }
- }
-
- arg1 = duk__ispec_toregconst_raw(comp_ctx, &x->x1, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/);
- arg2 = duk__ispec_toregconst_raw(comp_ctx, &x->x2, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/);
-
- /* If forced reg, use it as destination. Otherwise try to
- * use either coerced ispec if it is a temporary.
- *
- * When using extraops, avoid reusing arg2 as dest because that
- * would lead to an LDREG shuffle below. We still can't guarantee
- * dest != arg2 because we may have a forced_reg.
- */
- if (forced_reg >= 0) {
- dest = forced_reg;
- } else if (DUK__ISTEMP(comp_ctx, arg1)) {
- dest = (duk_reg_t) arg1;
- } else if (DUK__ISTEMP(comp_ctx, arg2) && x->t != DUK_IVAL_ARITH_EXTRAOP) {
- dest = (duk_reg_t) arg2;
- } else {
- dest = DUK__ALLOCTEMP(comp_ctx);
- }
-
- /* Extraop arithmetic opcodes must have destination same as
- * first source. If second source matches destination we need
- * a temporary register to avoid clobbering the second source.
- *
- * XXX: change calling code to avoid this situation in most cases.
- */
-
- if (x->t == DUK_IVAL_ARITH_EXTRAOP) {
- if (!(DUK__ISREG(comp_ctx, arg1) && (duk_reg_t) arg1 == dest)) {
- if (DUK__ISREG(comp_ctx, arg2) && (duk_reg_t) arg2 == dest) {
- /* arg2 would be clobbered so reassign it to a temp. */
- duk_reg_t tempreg;
- tempreg = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, tempreg, arg2);
- arg2 = tempreg;
- }
-
- if (DUK__ISREG(comp_ctx, arg1)) {
- duk__emit_a_bc(comp_ctx, DUK_OP_LDREG, dest, arg1);
- } else {
- DUK_ASSERT(DUK__ISCONST(comp_ctx, arg1));
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, dest, arg1);
- }
- }
-
- /* Note: special DUK__EMIT_FLAG_B_IS_TARGETSOURCE
- * used to indicate that B is both a source and a
- * target register. When shuffled, it needs to be
- * both input and output shuffled.
- */
- DUK_ASSERT(DUK__ISREG(comp_ctx, dest));
- duk__emit_extraop_b_c(comp_ctx,
- x->op | DUK__EMIT_FLAG_B_IS_TARGET |
- DUK__EMIT_FLAG_B_IS_TARGETSOURCE,
- (duk_regconst_t) dest,
- (duk_regconst_t) arg2);
-
- } else {
- DUK_ASSERT(DUK__ISREG(comp_ctx, dest));
- duk__emit_a_b_c(comp_ctx, x->op, (duk_regconst_t) dest, arg1, arg2);
- }
-
- x->t = DUK_IVAL_PLAIN;
- x->x1.t = DUK_ISPEC_REGCONST;
- x->x1.regconst = (duk_regconst_t) dest;
- return;
- }
- case DUK_IVAL_PROP: {
- /* XXX: very similar to DUK_IVAL_ARITH - merge? */
- duk_regconst_t arg1;
- duk_regconst_t arg2;
- duk_reg_t dest;
-
- /* Need a short reg/const, does not have to be a mutable temp. */
- arg1 = duk__ispec_toregconst_raw(comp_ctx, &x->x1, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/);
- arg2 = duk__ispec_toregconst_raw(comp_ctx, &x->x2, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_SHORT /*flags*/);
-
- /* Pick a destination register. If either base value or key
- * happens to be a temp value, reuse it as the destination.
- *
- * XXX: The temp must be a "mutable" one, i.e. such that no
- * other expression is using it anymore. Here this should be
- * the case because the value of a property access expression
- * is neither the base nor the key, but the lookup result.
- */
-
- if (forced_reg >= 0) {
- dest = forced_reg;
- } else if (DUK__ISTEMP(comp_ctx, arg1)) {
- dest = (duk_reg_t) arg1;
- } else if (DUK__ISTEMP(comp_ctx, arg2)) {
- dest = (duk_reg_t) arg2;
- } else {
- dest = DUK__ALLOCTEMP(comp_ctx);
- }
-
- duk__emit_a_b_c(comp_ctx, DUK_OP_GETPROP, (duk_regconst_t) dest, arg1, arg2);
-
- x->t = DUK_IVAL_PLAIN;
- x->x1.t = DUK_ISPEC_REGCONST;
- x->x1.regconst = (duk_regconst_t) dest;
- return;
- }
- case DUK_IVAL_VAR: {
- /* x1 must be a string */
- duk_reg_t dest;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- DUK_ASSERT(x->x1.t == DUK_ISPEC_VALUE);
-
- duk_dup(ctx, x->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- x->t = DUK_IVAL_PLAIN;
- x->x1.t = DUK_ISPEC_REGCONST;
- x->x1.regconst = (duk_regconst_t) reg_varbind;
- } else {
- dest = (forced_reg >= 0 ? forced_reg : DUK__ALLOCTEMP(comp_ctx));
- duk__emit_a_bc(comp_ctx, DUK_OP_GETVAR, (duk_regconst_t) dest, rc_varname);
- x->t = DUK_IVAL_PLAIN;
- x->x1.t = DUK_ISPEC_REGCONST;
- x->x1.regconst = (duk_regconst_t) dest;
- }
- return;
- }
- case DUK_IVAL_NONE:
- default: {
- break;
- }
- }
-
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return;
-}
-
-/* evaluate to plain value, no forced register (temp/bound reg both ok) */
-DUK_LOCAL void duk__ivalue_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- duk__ivalue_toplain_raw(comp_ctx, x, -1 /*forced_reg*/);
-}
-
-/* evaluate to final form (e.g. coerce GETPROP to code), throw away temp */
-DUK_LOCAL void duk__ivalue_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- duk_reg_t temp;
-
- /* If duk__ivalue_toplain_raw() allocates a temp, forget it and
- * restore next temp state.
- */
- temp = DUK__GETTEMP(comp_ctx);
- duk__ivalue_toplain_raw(comp_ctx, x, -1 /*forced_reg*/);
- DUK__SETTEMP(comp_ctx, temp);
-}
-
-/* Coerce an duk_ivalue to a register or constant; result register may
- * be a temp or a bound register.
- *
- * The duk_ivalue argument ('x') is converted into a regconst as a
- * side effect.
- */
-DUK_LOCAL
-duk_regconst_t duk__ivalue_toregconst_raw(duk_compiler_ctx *comp_ctx,
- duk_ivalue *x,
- duk_reg_t forced_reg,
- duk_small_uint_t flags) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_regconst_t reg;
- DUK_UNREF(thr);
- DUK_UNREF(ctx);
-
- DUK_DDD(DUK_DDDPRINT("duk__ivalue_toregconst_raw(): x={t=%ld,op=%ld,x1={%ld:%ld:%!T},x2={%ld:%ld:%!T}}, "
- "forced_reg=%ld, flags 0x%08lx: allow_const=%ld require_temp=%ld require_short=%ld",
- (long) x->t, (long) x->op,
- (long) x->x1.t, (long) x->x1.regconst,
- (duk_tval *) duk_get_tval(ctx, x->x1.valstack_idx),
- (long) x->x2.t, (long) x->x2.regconst,
- (duk_tval *) duk_get_tval(ctx, x->x2.valstack_idx),
- (long) forced_reg,
- (unsigned long) flags,
- (long) ((flags & DUK__IVAL_FLAG_ALLOW_CONST) ? 1 : 0),
- (long) ((flags & DUK__IVAL_FLAG_REQUIRE_TEMP) ? 1 : 0),
- (long) ((flags & DUK__IVAL_FLAG_REQUIRE_SHORT) ? 1 : 0)));
-
- /* first coerce to a plain value */
- duk__ivalue_toplain_raw(comp_ctx, x, forced_reg);
- DUK_ASSERT(x->t == DUK_IVAL_PLAIN);
-
- /* then to a register */
- reg = duk__ispec_toregconst_raw(comp_ctx, &x->x1, forced_reg, flags);
- x->x1.t = DUK_ISPEC_REGCONST;
- x->x1.regconst = reg;
-
- return reg;
-}
-
-DUK_LOCAL duk_reg_t duk__ivalue_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- return duk__ivalue_toregconst_raw(comp_ctx, x, -1, 0 /*flags*/);
-}
-
-#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__ivalue_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
-}
-#endif
-
-DUK_LOCAL void duk__ivalue_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *x, duk_int_t forced_reg) {
- DUK_ASSERT(forced_reg >= 0);
- (void) duk__ivalue_toregconst_raw(comp_ctx, x, forced_reg, 0 /*flags*/);
-}
-
-DUK_LOCAL duk_regconst_t duk__ivalue_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
-}
-
-DUK_LOCAL duk_regconst_t duk__ivalue_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *x) {
- return duk__ivalue_toregconst_raw(comp_ctx, x, -1, DUK__IVAL_FLAG_ALLOW_CONST | DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
-}
-
-/* The issues below can be solved with better flags */
-
-/* XXX: many operations actually want toforcedtemp() -- brand new temp? */
-/* XXX: need a toplain_ignore() which will only coerce a value to a temp
- * register if it might have a side effect. Side-effect free values do not
- * need to be coerced.
- */
-
-/*
- * Identifier handling
- */
-
-DUK_LOCAL duk_reg_t duk__lookup_active_register_binding(duk_compiler_ctx *comp_ctx) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *h_varname;
- duk_reg_t ret;
-
- DUK_DDD(DUK_DDDPRINT("resolving identifier reference to '%!T'",
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /*
- * Special name handling
- */
-
- h_varname = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_varname != NULL);
-
- if (h_varname == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr)) {
- DUK_DDD(DUK_DDDPRINT("flagging function as accessing 'arguments'"));
- comp_ctx->curr_func.id_access_arguments = 1;
- }
-
- /*
- * Inside one or more 'with' statements fall back to slow path always.
- * (See e.g. test-stmt-with.js.)
- */
-
- if (comp_ctx->curr_func.with_depth > 0) {
- DUK_DDD(DUK_DDDPRINT("identifier lookup inside a 'with' -> fall back to slow path"));
- goto slow_path;
- }
-
- /*
- * Any catch bindings ("catch (e)") also affect identifier binding.
- *
- * Currently, the varmap is modified for the duration of the catch
- * clause to ensure any identifier accesses with the catch variable
- * name will use slow path.
- */
-
- duk_get_prop(ctx, comp_ctx->curr_func.varmap_idx);
- if (duk_is_number(ctx, -1)) {
- ret = duk_to_int(ctx, -1);
- duk_pop(ctx);
- } else {
- duk_pop(ctx);
- goto slow_path;
- }
-
- DUK_DDD(DUK_DDDPRINT("identifier lookup -> reg %ld", (long) ret));
- return ret;
-
- slow_path:
- DUK_DDD(DUK_DDDPRINT("identifier lookup -> slow path"));
-
- comp_ctx->curr_func.id_access_slow = 1;
- return (duk_reg_t) -1;
-}
-
-/* Lookup an identifier name in the current varmap, indicating whether the
- * identifier is register-bound and if not, allocating a constant for the
- * identifier name. Returns 1 if register-bound, 0 otherwise. Caller can
- * also check (out_reg_varbind >= 0) to check whether or not identifier is
- * register bound. The caller must NOT use out_rc_varname at all unless
- * return code is 0 or out_reg_varbind is < 0; this is becuase out_rc_varname
- * is unsigned and doesn't have a "unused" / none value.
- */
-DUK_LOCAL duk_bool_t duk__lookup_lhs(duk_compiler_ctx *comp_ctx, duk_reg_t *out_reg_varbind, duk_regconst_t *out_rc_varname) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- /* [ ... varname ] */
-
- duk_dup_top(ctx);
- reg_varbind = duk__lookup_active_register_binding(comp_ctx);
-
- if (reg_varbind >= 0) {
- *out_reg_varbind = reg_varbind;
- *out_rc_varname = 0; /* duk_regconst_t is unsigned, so use 0 as dummy value (ignored by caller) */
- duk_pop(ctx);
- return 1;
- } else {
- rc_varname = duk__getconst(comp_ctx);
- *out_reg_varbind = -1;
- *out_rc_varname = rc_varname;
- return 0;
- }
-}
-
-/*
- * Label handling
- *
- * Labels are initially added with flags prohibiting both break and continue.
- * When the statement type is finally uncovered (after potentially multiple
- * labels), all the labels are updated to allow/prohibit break and continue.
- */
-
-DUK_LOCAL void duk__add_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_int_t pc_label, duk_int_t label_id) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_size_t n;
- duk_size_t new_size;
- duk_uint8_t *p;
- duk_labelinfo *li_start, *li;
-
- /* Duplicate (shadowing) labels are not allowed, except for the empty
- * labels (which are used as default labels for switch and iteration
- * statements).
- *
- * We could also allow shadowing of non-empty pending labels without any
- * other issues than breaking the required label shadowing requirements
- * of the E5 specification, see Section 12.12.
- */
-
- p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos);
- li_start = (duk_labelinfo *) (void *) p;
- li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos));
- n = (duk_size_t) (li - li_start);
-
- while (li > li_start) {
- li--;
-
- if (li->h_label == h_label && h_label != DUK_HTHREAD_STRING_EMPTY_STRING(thr)) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_DUPLICATE_LABEL);
- }
- }
-
- duk_push_hstring(ctx, h_label);
- DUK_ASSERT(n <= DUK_UARRIDX_MAX); /* label limits */
- (void) duk_put_prop_index(ctx, comp_ctx->curr_func.labelnames_idx, (duk_uarridx_t) n);
-
- new_size = (n + 1) * sizeof(duk_labelinfo);
- duk_hbuffer_resize(thr, comp_ctx->curr_func.h_labelinfos, new_size);
- /* XXX: spare handling, slow now */
-
- /* relookup after possible realloc */
- p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos);
- li_start = (duk_labelinfo *) (void *) p;
- DUK_UNREF(li_start); /* silence scan-build warning */
- li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos));
- li--;
-
- /* Labels can be used for iteration statements but also for other statements,
- * in particular a label can be used for a block statement. All cases of a
- * named label accept a 'break' so that flag is set here. Iteration statements
- * also allow 'continue', so that flag is updated when we figure out the
- * statement type.
- */
-
- li->flags = DUK_LABEL_FLAG_ALLOW_BREAK;
- li->label_id = label_id;
- li->h_label = h_label;
- li->catch_depth = comp_ctx->curr_func.catch_depth; /* catch depth from current func */
- li->pc_label = pc_label;
-
- DUK_DDD(DUK_DDDPRINT("registered label: flags=0x%08lx, id=%ld, name=%!O, catch_depth=%ld, pc_label=%ld",
- (unsigned long) li->flags, (long) li->label_id, (duk_heaphdr *) li->h_label,
- (long) li->catch_depth, (long) li->pc_label));
-}
-
-/* Update all labels with matching label_id. */
-DUK_LOCAL void duk__update_label_flags(duk_compiler_ctx *comp_ctx, duk_int_t label_id, duk_small_uint_t flags) {
- duk_uint8_t *p;
- duk_labelinfo *li_start, *li;
-
- p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(comp_ctx->thr->heap, comp_ctx->curr_func.h_labelinfos);
- li_start = (duk_labelinfo *) (void *) p;
- li = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos));
-
- /* Match labels starting from latest; once label_id no longer matches, we can
- * safely exit without checking the rest of the labels (only the topmost labels
- * are ever updated).
- */
- while (li > li_start) {
- li--;
-
- if (li->label_id != label_id) {
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("updating (overwriting) label flags for li=%p, label_id=%ld, flags=%ld",
- (void *) li, (long) label_id, (long) flags));
-
- li->flags = flags;
- }
-}
-
-/* Lookup active label information. Break/continue distinction is necessary to handle switch
- * statement related labels correctly: a switch will only catch a 'break', not a 'continue'.
- *
- * An explicit label cannot appear multiple times in the active set, but empty labels (unlabelled
- * iteration and switch statements) can. A break will match the closest unlabelled or labelled
- * statement. A continue will match the closest unlabelled or labelled iteration statement. It is
- * a syntax error if a continue matches a labelled switch statement; because an explicit label cannot
- * be duplicated, the continue cannot match any valid label outside the switch.
- *
- * A side effect of these rules is that a LABEL statement related to a switch should never actually
- * catch a continue abrupt completion at run-time. Hence an INVALID opcode can be placed in the
- * continue slot of the switch's LABEL statement.
- */
-
-/* XXX: awkward, especially the bunch of separate output values -> output struct? */
-DUK_LOCAL void duk__lookup_active_label(duk_compiler_ctx *comp_ctx, duk_hstring *h_label, duk_bool_t is_break, duk_int_t *out_label_id, duk_int_t *out_label_catch_depth, duk_int_t *out_label_pc, duk_bool_t *out_is_closest) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_uint8_t *p;
- duk_labelinfo *li_start, *li_end, *li;
- duk_bool_t match = 0;
-
- DUK_DDD(DUK_DDDPRINT("looking up active label: label='%!O', is_break=%ld",
- (duk_heaphdr *) h_label, (long) is_break));
-
- DUK_UNREF(ctx);
-
- p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, comp_ctx->curr_func.h_labelinfos);
- li_start = (duk_labelinfo *) (void *) p;
- li_end = (duk_labelinfo *) (void *) (p + DUK_HBUFFER_GET_SIZE(comp_ctx->curr_func.h_labelinfos));
- li = li_end;
-
- /* Match labels starting from latest label because there can be duplicate empty
- * labels in the label set.
- */
- while (li > li_start) {
- li--;
-
- if (li->h_label != h_label) {
- DUK_DDD(DUK_DDDPRINT("labelinfo[%ld] ->'%!O' != %!O",
- (long) (li - li_start),
- (duk_heaphdr *) li->h_label,
- (duk_heaphdr *) h_label));
- continue;
- }
-
- DUK_DDD(DUK_DDDPRINT("labelinfo[%ld] -> '%!O' label name matches (still need to check type)",
- (long) (li - li_start), (duk_heaphdr *) h_label));
-
- /* currently all labels accept a break, so no explicit check for it now */
- DUK_ASSERT(li->flags & DUK_LABEL_FLAG_ALLOW_BREAK);
-
- if (is_break) {
- /* break matches always */
- match = 1;
- break;
- } else if (li->flags & DUK_LABEL_FLAG_ALLOW_CONTINUE) {
- /* iteration statements allow continue */
- match = 1;
- break;
- } else {
- /* continue matched this label -- we can only continue if this is the empty
- * label, for which duplication is allowed, and thus there is hope of
- * finding a match deeper in the label stack.
- */
- if (h_label != DUK_HTHREAD_STRING_EMPTY_STRING(thr)) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LABEL);
- } else {
- DUK_DDD(DUK_DDDPRINT("continue matched an empty label which does not "
- "allow a continue -> continue lookup deeper in label stack"));
- }
- }
- }
- /* XXX: match flag is awkward, rework */
- if (!match) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LABEL);
- }
-
- DUK_DDD(DUK_DDDPRINT("label match: %!O -> label_id %ld, catch_depth=%ld, pc_label=%ld",
- (duk_heaphdr *) h_label, (long) li->label_id,
- (long) li->catch_depth, (long) li->pc_label));
-
- *out_label_id = li->label_id;
- *out_label_catch_depth = li->catch_depth;
- *out_label_pc = li->pc_label;
- *out_is_closest = (li == li_end - 1);
-}
-
-DUK_LOCAL void duk__reset_labels_to_length(duk_compiler_ctx *comp_ctx, duk_int_t len) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_size_t new_size;
-
- /* XXX: duk_set_length */
- new_size = sizeof(duk_labelinfo) * (duk_size_t) len;
- duk_push_int(ctx, len);
- duk_put_prop_stridx(ctx, comp_ctx->curr_func.labelnames_idx, DUK_STRIDX_LENGTH);
- duk_hbuffer_resize(thr, comp_ctx->curr_func.h_labelinfos, new_size);
-}
-
-/*
- * Expression parsing: duk__expr_nud(), duk__expr_led(), duk__expr_lbp(), and helpers.
- *
- * - duk__expr_nud(): ("null denotation"): process prev_token as a "start" of an expression (e.g. literal)
- * - duk__expr_led(): ("left denotation"): process prev_token in the "middle" of an expression (e.g. operator)
- * - duk__expr_lbp(): ("left-binding power"): return left-binding power of curr_token
- */
-
-/* object literal key tracking flags */
-#define DUK__OBJ_LIT_KEY_PLAIN (1 << 0) /* key encountered as a plain property */
-#define DUK__OBJ_LIT_KEY_GET (1 << 1) /* key encountered as a getter */
-#define DUK__OBJ_LIT_KEY_SET (1 << 2) /* key encountered as a setter */
-
-DUK_LOCAL void duk__nud_array_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_reg_t reg_obj; /* result reg */
- duk_reg_t reg_temp; /* temp reg */
- duk_reg_t temp_start; /* temp reg value for start of loop */
- duk_small_uint_t max_init_values; /* max # of values initialized in one MPUTARR set */
- duk_small_uint_t num_values; /* number of values in current MPUTARR set */
- duk_uarridx_t curr_idx; /* current (next) array index */
- duk_uarridx_t start_idx; /* start array index of current MPUTARR set */
- duk_uarridx_t init_idx; /* last array index explicitly initialized, +1 */
- duk_bool_t require_comma; /* next loop requires a comma */
-
- /* DUK_TOK_LBRACKET already eaten, current token is right after that */
- DUK_ASSERT(comp_ctx->prev_token.t == DUK_TOK_LBRACKET);
-
- max_init_values = DUK__MAX_ARRAY_INIT_VALUES; /* XXX: depend on available temps? */
-
- reg_obj = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_NEWARR | DUK__EMIT_FLAG_B_IS_TARGET,
- reg_obj,
- 0); /* XXX: patch initial size afterwards? */
- temp_start = DUK__GETTEMP(comp_ctx);
-
- /*
- * Emit initializers in sets of maximum max_init_values.
- * Corner cases such as single value initializers do not have
- * special handling now.
- *
- * Elided elements must not be emitted as 'undefined' values,
- * because such values would be enumerable (which is incorrect).
- * Also note that trailing elisions must be reflected in the
- * length of the final array but cause no elements to be actually
- * inserted.
- */
-
- curr_idx = 0;
- init_idx = 0; /* tracks maximum initialized index + 1 */
- start_idx = 0;
- require_comma = 0;
-
- for (;;) {
- num_values = 0;
- DUK__SETTEMP(comp_ctx, temp_start);
-
- if (comp_ctx->curr_token.t == DUK_TOK_RBRACKET) {
- break;
- }
-
- for (;;) {
- if (comp_ctx->curr_token.t == DUK_TOK_RBRACKET) {
- /* the outer loop will recheck and exit */
- break;
- }
-
- /* comma check */
- if (require_comma) {
- if (comp_ctx->curr_token.t == DUK_TOK_COMMA) {
- /* comma after a value, expected */
- duk__advance(comp_ctx);
- require_comma = 0;
- continue;
- } else {
- goto syntax_error;
- }
- } else {
- if (comp_ctx->curr_token.t == DUK_TOK_COMMA) {
- /* elision - flush */
- curr_idx++;
- duk__advance(comp_ctx);
- /* if num_values > 0, MPUTARR emitted by outer loop after break */
- break;
- }
- }
- /* else an array initializer element */
-
- /* initial index */
- if (num_values == 0) {
- start_idx = curr_idx;
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_load_int32(comp_ctx, reg_temp, (duk_int32_t) start_idx);
- }
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx); /* alloc temp just in case, to update max temp */
- DUK__SETTEMP(comp_ctx, reg_temp);
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp /*forced_reg*/);
- DUK__SETTEMP(comp_ctx, reg_temp + 1);
-
- num_values++;
- curr_idx++;
- require_comma = 1;
-
- if (num_values >= max_init_values) {
- /* MPUTARR emitted by outer loop */
- break;
- }
- }
-
- if (num_values > 0) {
- /* - A is a source register (it's not a write target, but used
- * to identify the target object) but can be shuffled.
- * - B cannot be shuffled normally because it identifies a range
- * of registers, the emitter has special handling for this
- * (the "no shuffle" flag must not be set).
- * - C is a non-register number and cannot be shuffled, but
- * never needs to be.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_MPUTARR |
- DUK__EMIT_FLAG_NO_SHUFFLE_C |
- DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) reg_obj,
- (duk_regconst_t) temp_start,
- (duk_regconst_t) num_values);
- init_idx = start_idx + num_values;
-
- /* num_values and temp_start reset at top of outer loop */
- }
- }
-
- DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RBRACKET);
- duk__advance(comp_ctx);
-
- DUK_DDD(DUK_DDDPRINT("array literal done, curridx=%ld, initidx=%ld",
- (long) curr_idx, (long) init_idx));
-
- /* trailing elisions? */
- if (curr_idx > init_idx) {
- /* yes, must set array length explicitly */
- DUK_DDD(DUK_DDDPRINT("array literal has trailing elisions which affect its length"));
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_load_int32(comp_ctx, reg_temp, (duk_int_t) curr_idx);
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_SETALEN,
- (duk_regconst_t) reg_obj,
- (duk_regconst_t) reg_temp);
- }
-
- DUK__SETTEMP(comp_ctx, temp_start);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_obj;
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_ARRAY_LITERAL);
-}
-
-/* duplicate/invalid key checks; returns 1 if syntax error */
-DUK_LOCAL duk_bool_t duk__nud_object_literal_key_check(duk_compiler_ctx *comp_ctx, duk_small_uint_t new_key_flags) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t key_flags;
-
- /* [ ... key_obj key ] */
-
- DUK_ASSERT(duk_is_string(ctx, -1));
-
- /*
- * 'key_obj' tracks keys encountered so far by associating an
- * integer with flags with already encountered keys. The checks
- * below implement E5 Section 11.1.5, step 4 for production:
- *
- * PropertyNameAndValueList: PropertyNameAndValueList , PropertyAssignment
- */
-
- duk_dup(ctx, -1); /* [ ... key_obj key key ] */
- duk_get_prop(ctx, -3); /* [ ... key_obj key val ] */
- key_flags = duk_to_int(ctx, -1);
- duk_pop(ctx); /* [ ... key_obj key ] */
-
- if (new_key_flags & DUK__OBJ_LIT_KEY_PLAIN) {
- if ((key_flags & DUK__OBJ_LIT_KEY_PLAIN) && comp_ctx->curr_func.is_strict) {
- /* step 4.a */
- DUK_DDD(DUK_DDDPRINT("duplicate key: plain key appears twice in strict mode"));
- return 1;
- }
- if (key_flags & (DUK__OBJ_LIT_KEY_GET | DUK__OBJ_LIT_KEY_SET)) {
- /* step 4.c */
- DUK_DDD(DUK_DDDPRINT("duplicate key: plain key encountered after setter/getter"));
- return 1;
- }
- } else {
- if (key_flags & DUK__OBJ_LIT_KEY_PLAIN) {
- /* step 4.b */
- DUK_DDD(DUK_DDDPRINT("duplicate key: getter/setter encountered after plain key"));
- return 1;
- }
- if (key_flags & new_key_flags) {
- /* step 4.d */
- DUK_DDD(DUK_DDDPRINT("duplicate key: getter/setter encountered twice"));
- return 1;
- }
- }
-
- new_key_flags |= key_flags;
- DUK_DDD(DUK_DDDPRINT("setting/updating key %!T flags: 0x%08lx -> 0x%08lx",
- (duk_tval *) duk_get_tval(ctx, -1),
- (unsigned long) key_flags,
- (unsigned long) new_key_flags));
- duk_dup(ctx, -1);
- duk_push_int(ctx, new_key_flags); /* [ ... key_obj key key flags ] */
- duk_put_prop(ctx, -4); /* [ ... key_obj key ] */
-
- return 0;
-}
-
-DUK_LOCAL void duk__nud_object_literal(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_reg_t reg_obj; /* result reg */
- duk_reg_t reg_key; /* temp reg for key literal */
- duk_reg_t reg_temp; /* temp reg */
- duk_reg_t temp_start; /* temp reg value for start of loop */
- duk_small_uint_t max_init_pairs; /* max # of key-value pairs initialized in one MPUTOBJ set */
- duk_small_uint_t num_pairs; /* number of pairs in current MPUTOBJ set */
- duk_bool_t first; /* first value: comma must not precede the value */
- duk_bool_t is_set, is_get; /* temps */
-
- DUK_ASSERT(comp_ctx->prev_token.t == DUK_TOK_LCURLY);
-
- max_init_pairs = DUK__MAX_OBJECT_INIT_PAIRS; /* XXX: depend on available temps? */
-
- reg_obj = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_NEWOBJ | DUK__EMIT_FLAG_B_IS_TARGET,
- reg_obj,
- 0); /* XXX: patch initial size afterwards? */
- temp_start = DUK__GETTEMP(comp_ctx);
-
- /* temp object for tracking / detecting duplicate keys */
- duk_push_object(ctx);
-
- /*
- * Emit initializers in sets of maximum max_init_pairs keys.
- * Setter/getter is handled separately and terminates the
- * current set of initializer values. Corner cases such as
- * single value initializers do not have special handling now.
- */
-
- first = 1;
- for (;;) {
- num_pairs = 0;
- DUK__SETTEMP(comp_ctx, temp_start);
-
- if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) {
- break;
- }
-
- for (;;) {
- /*
- * Three possible element formats:
- * 1) PropertyName : AssignmentExpression
- * 2) get PropertyName () { FunctionBody }
- * 3) set PropertyName ( PropertySetParameterList ) { FunctionBody }
- *
- * PropertyName can be IdentifierName (includes reserved words), a string
- * literal, or a number literal. Note that IdentifierName allows 'get' and
- * 'set' too, so we need to look ahead to the next token to distinguish:
- *
- * { get : 1 }
- *
- * and
- *
- * { get foo() { return 1 } }
- * { get get() { return 1 } } // 'get' as getter propertyname
- *
- * Finally, a trailing comma is allowed.
- *
- * Key name is coerced to string at compile time (and ends up as a
- * a string constant) even for numeric keys (e.g. "{1:'foo'}").
- * These could be emitted using e.g. LDINT, but that seems hardly
- * worth the effort and would increase code size.
- */
-
- DUK_DDD(DUK_DDDPRINT("object literal inner loop, curr_token->t = %ld",
- (long) comp_ctx->curr_token.t));
-
- if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) {
- /* the outer loop will recheck and exit */
- break;
- }
- if (num_pairs >= max_init_pairs) {
- /* MPUTOBJ emitted by outer loop */
- break;
- }
-
- if (first) {
- first = 0;
- } else {
- if (comp_ctx->curr_token.t != DUK_TOK_COMMA) {
- goto syntax_error;
- }
- duk__advance(comp_ctx);
- if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) {
- /* trailing comma followed by rcurly */
- break;
- }
- }
-
- /* advance to get one step of lookup */
- duk__advance(comp_ctx);
-
- /* NOTE: "get" and "set" are not officially ReservedWords and the lexer
- * currently treats them always like ordinary identifiers (DUK_TOK_GET
- * and DUK_TOK_SET are unused). They need to be detected based on the
- * identifier string content.
- */
-
- is_get = (comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER &&
- comp_ctx->prev_token.str1 == DUK_HTHREAD_STRING_GET(thr));
- is_set = (comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER &&
- comp_ctx->prev_token.str1 == DUK_HTHREAD_STRING_SET(thr));
- if ((is_get || is_set) && comp_ctx->curr_token.t != DUK_TOK_COLON) {
- /* getter/setter */
- duk_int_t fnum;
-
- if (comp_ctx->curr_token.t_nores == DUK_TOK_IDENTIFIER ||
- comp_ctx->curr_token.t_nores == DUK_TOK_STRING) {
- /* same handling for identifiers and strings */
- DUK_ASSERT(comp_ctx->curr_token.str1 != NULL);
- duk_push_hstring(ctx, comp_ctx->curr_token.str1);
- } else if (comp_ctx->curr_token.t == DUK_TOK_NUMBER) {
- duk_push_number(ctx, comp_ctx->curr_token.num);
- duk_to_string(ctx, -1);
- } else {
- goto syntax_error;
- }
-
- DUK_ASSERT(duk_is_string(ctx, -1));
- if (duk__nud_object_literal_key_check(comp_ctx,
- (is_get ? DUK__OBJ_LIT_KEY_GET : DUK__OBJ_LIT_KEY_SET))) {
- goto syntax_error;
- }
- reg_key = duk__getconst(comp_ctx);
-
- if (num_pairs > 0) {
- /* - A is a source register (it's not a write target, but used
- * to identify the target object) but can be shuffled.
- * - B cannot be shuffled normally because it identifies a range
- * of registers, the emitter has special handling for this
- * (the "no shuffle" flag must not be set).
- * - C is a non-register number and cannot be shuffled, but
- * never needs to be.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_MPUTOBJ |
- DUK__EMIT_FLAG_NO_SHUFFLE_C |
- DUK__EMIT_FLAG_A_IS_SOURCE,
- reg_obj,
- temp_start,
- num_pairs);
- num_pairs = 0;
- DUK__SETTEMP(comp_ctx, temp_start);
- }
-
- /* curr_token = get/set name */
- fnum = duk__parse_func_like_fnum(comp_ctx, 0 /*is_decl*/, 1 /*is_setget*/);
-
- DUK_ASSERT(DUK__GETTEMP(comp_ctx) == temp_start);
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDCONST,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_key);
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_CLOSURE,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) fnum);
-
- /* Slot C is used in a non-standard fashion (range of regs),
- * emitter code has special handling for it (must not set the
- * "no shuffle" flag).
- */
- duk__emit_extraop_b_c(comp_ctx,
- (is_get ? DUK_EXTRAOP_INITGET : DUK_EXTRAOP_INITSET),
- reg_obj,
- temp_start); /* temp_start+0 = key, temp_start+1 = closure */
-
- DUK__SETTEMP(comp_ctx, temp_start);
- } else {
- /* normal key/value */
- if (comp_ctx->prev_token.t_nores == DUK_TOK_IDENTIFIER ||
- comp_ctx->prev_token.t_nores == DUK_TOK_STRING) {
- /* same handling for identifiers and strings */
- DUK_ASSERT(comp_ctx->prev_token.str1 != NULL);
- duk_push_hstring(ctx, comp_ctx->prev_token.str1);
- } else if (comp_ctx->prev_token.t == DUK_TOK_NUMBER) {
- duk_push_number(ctx, comp_ctx->prev_token.num);
- duk_to_string(ctx, -1);
- } else {
- goto syntax_error;
- }
-
- DUK_ASSERT(duk_is_string(ctx, -1));
- if (duk__nud_object_literal_key_check(comp_ctx, DUK__OBJ_LIT_KEY_PLAIN)) {
- goto syntax_error;
- }
- reg_key = duk__getconst(comp_ctx);
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDCONST,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_key);
- duk__advance_expect(comp_ctx, DUK_TOK_COLON);
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx); /* alloc temp just in case, to update max temp */
- DUK__SETTEMP(comp_ctx, reg_temp);
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp /*forced_reg*/);
- DUK__SETTEMP(comp_ctx, reg_temp + 1);
-
- num_pairs++;
- }
- }
-
- if (num_pairs > 0) {
- /* See MPUTOBJ comments above. */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_MPUTOBJ |
- DUK__EMIT_FLAG_NO_SHUFFLE_C |
- DUK__EMIT_FLAG_A_IS_SOURCE,
- reg_obj,
- temp_start,
- num_pairs);
-
- /* num_pairs and temp_start reset at top of outer loop */
- }
- }
-
- DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RCURLY);
- duk__advance(comp_ctx);
-
- DUK__SETTEMP(comp_ctx, temp_start);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_obj;
-
- DUK_DDD(DUK_DDDPRINT("final tracking object: %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_pop(ctx);
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_OBJECT_LITERAL);
-}
-
-/* Parse argument list. Arguments are written to temps starting from
- * "next temp". Returns number of arguments parsed. Expects left paren
- * to be already eaten, and eats the right paren before returning.
- */
-DUK_LOCAL duk_int_t duk__parse_arguments(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_int_t nargs = 0;
- duk_reg_t reg_temp;
-
- /* Note: expect that caller has already eaten the left paren */
-
- DUK_DDD(DUK_DDDPRINT("start parsing arguments, prev_token.t=%ld, curr_token.t=%ld",
- (long) comp_ctx->prev_token.t, (long) comp_ctx->curr_token.t));
-
- for (;;) {
- if (comp_ctx->curr_token.t == DUK_TOK_RPAREN) {
- break;
- }
- if (nargs > 0) {
- duk__advance_expect(comp_ctx, DUK_TOK_COMMA);
- }
-
- /* We want the argument expression value to go to "next temp"
- * without additional moves. That should almost always be the
- * case, but we double check after expression parsing.
- *
- * This is not the cleanest possible approach.
- */
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx); /* bump up "allocated" reg count, just in case */
- DUK__SETTEMP(comp_ctx, reg_temp);
-
- /* binding power must be high enough to NOT allow comma expressions directly */
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp); /* always allow 'in', coerce to 'tr' just in case */
-
- DUK__SETTEMP(comp_ctx, reg_temp + 1);
- nargs++;
-
- DUK_DDD(DUK_DDDPRINT("argument #%ld written into reg %ld", (long) nargs, (long) reg_temp));
- }
-
- /* eat the right paren */
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- DUK_DDD(DUK_DDDPRINT("end parsing arguments"));
-
- return nargs;
-}
-
-DUK_LOCAL duk_bool_t duk__expr_is_empty(duk_compiler_ctx *comp_ctx) {
- /* empty expressions can be detected conveniently with nud/led counts */
- return (comp_ctx->curr_func.nud_count == 0) &&
- (comp_ctx->curr_func.led_count == 0);
-}
-
-DUK_LOCAL void duk__expr_nud(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_token *tk;
- duk_reg_t temp_at_entry;
- duk_small_int_t tok;
- duk_uint32_t args; /* temp variable to pass constants and flags to shared code */
-
- /*
- * ctx->prev_token token to process with duk__expr_nud()
- * ctx->curr_token updated by caller
- *
- * Note: the token in the switch below has already been eaten.
- */
-
- temp_at_entry = DUK__GETTEMP(comp_ctx);
-
- comp_ctx->curr_func.nud_count++;
-
- tk = &comp_ctx->prev_token;
- tok = tk->t;
- res->t = DUK_IVAL_NONE;
-
- DUK_DDD(DUK_DDDPRINT("duk__expr_nud(), prev_token.t=%ld, allow_in=%ld, paren_level=%ld",
- (long) tk->t, (long) comp_ctx->curr_func.allow_in, (long) comp_ctx->curr_func.paren_level));
-
- switch (tok) {
-
- /* PRIMARY EXPRESSIONS */
-
- case DUK_TOK_THIS: {
- duk_reg_t reg_temp;
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_LDTHIS,
- (duk_regconst_t) reg_temp);
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
- case DUK_TOK_IDENTIFIER: {
- res->t = DUK_IVAL_VAR;
- res->x1.t = DUK_ISPEC_VALUE;
- duk_push_hstring(ctx, tk->str1);
- duk_replace(ctx, res->x1.valstack_idx);
- return;
- }
- case DUK_TOK_NULL: {
- duk_push_null(ctx);
- goto plain_value;
- }
- case DUK_TOK_TRUE: {
- duk_push_true(ctx);
- goto plain_value;
- }
- case DUK_TOK_FALSE: {
- duk_push_false(ctx);
- goto plain_value;
- }
- case DUK_TOK_NUMBER: {
- duk_push_number(ctx, tk->num);
- goto plain_value;
- }
- case DUK_TOK_STRING: {
- DUK_ASSERT(tk->str1 != NULL);
- duk_push_hstring(ctx, tk->str1);
- goto plain_value;
- }
- case DUK_TOK_REGEXP: {
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_reg_t reg_temp;
- duk_regconst_t rc_re_bytecode; /* const */
- duk_regconst_t rc_re_source; /* const */
-
- DUK_ASSERT(tk->str1 != NULL);
- DUK_ASSERT(tk->str2 != NULL);
-
- DUK_DDD(DUK_DDDPRINT("emitting regexp op, str1=%!O, str2=%!O",
- (duk_heaphdr *) tk->str1,
- (duk_heaphdr *) tk->str2));
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk_push_hstring(ctx, tk->str1);
- duk_push_hstring(ctx, tk->str2);
-
- /* [ ... pattern flags ] */
-
- duk_regexp_compile(thr);
-
- /* [ ... escaped_source bytecode ] */
-
- rc_re_bytecode = duk__getconst(comp_ctx);
- rc_re_source = duk__getconst(comp_ctx);
-
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_REGEXP,
- (duk_regconst_t) reg_temp /*a*/,
- rc_re_bytecode /*b*/,
- rc_re_source /*c*/);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
-#else /* DUK_USE_REGEXP_SUPPORT */
- goto syntax_error;
-#endif /* DUK_USE_REGEXP_SUPPORT */
- }
- case DUK_TOK_LBRACKET: {
- DUK_DDD(DUK_DDDPRINT("parsing array literal"));
- duk__nud_array_literal(comp_ctx, res);
- return;
- }
- case DUK_TOK_LCURLY: {
- DUK_DDD(DUK_DDDPRINT("parsing object literal"));
- duk__nud_object_literal(comp_ctx, res);
- return;
- }
- case DUK_TOK_LPAREN: {
- duk_bool_t prev_allow_in;
-
- comp_ctx->curr_func.paren_level++;
- prev_allow_in = comp_ctx->curr_func.allow_in;
- comp_ctx->curr_func.allow_in = 1; /* reset 'allow_in' for parenthesized expression */
-
- duk__expr(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression, terminates at a ')' */
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
- comp_ctx->curr_func.allow_in = prev_allow_in;
- comp_ctx->curr_func.paren_level--;
- return;
- }
-
- /* MEMBER/NEW/CALL EXPRESSIONS */
-
- case DUK_TOK_NEW: {
- /*
- * Parsing an expression starting with 'new' is tricky because
- * there are multiple possible productions deriving from
- * LeftHandSideExpression which begin with 'new'.
- *
- * We currently resort to one-token lookahead to distinguish the
- * cases. Hopefully this is correct. The binding power must be
- * such that parsing ends at an LPAREN (CallExpression) but not at
- * a PERIOD or LBRACKET (MemberExpression).
- *
- * See doc/compiler.rst for discussion on the parsing approach,
- * and testcases/test-dev-new.js for a bunch of documented tests.
- */
-
- duk_reg_t reg_target;
- duk_int_t nargs;
-
- DUK_DDD(DUK_DDDPRINT("begin parsing new expression"));
-
- reg_target = DUK__ALLOCTEMP(comp_ctx);
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_CALL /*rbp_flags*/, reg_target /*forced_reg*/);
- DUK__SETTEMP(comp_ctx, reg_target + 1);
-
- if (comp_ctx->curr_token.t == DUK_TOK_LPAREN) {
- /* 'new' MemberExpression Arguments */
- DUK_DDD(DUK_DDDPRINT("new expression has argument list"));
- duk__advance(comp_ctx);
- nargs = duk__parse_arguments(comp_ctx, res); /* parse args starting from "next temp", reg_target + 1 */
- /* right paren eaten */
- } else {
- /* 'new' MemberExpression */
- DUK_DDD(DUK_DDDPRINT("new expression has no argument list"));
- nargs = 0;
- }
-
- /* Opcode slot C is used in a non-standard way, so shuffling
- * is not allowed.
- */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_NEW | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_C,
- 0 /*unused*/,
- reg_target /*target*/,
- nargs /*num_args*/);
-
- DUK_DDD(DUK_DDDPRINT("end parsing new expression"));
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_target;
- return;
- }
-
- /* FUNCTION EXPRESSIONS */
-
- case DUK_TOK_FUNCTION: {
- /* Function expression. Note that any statement beginning with 'function'
- * is handled by the statement parser as a function declaration, or a
- * non-standard function expression/statement (or a SyntaxError). We only
- * handle actual function expressions (occurring inside an expression) here.
- *
- * O(depth^2) parse count for inner functions is handled by recording a
- * lexer offset on the first compilation pass, so that the function can
- * be efficiently skipped on the second pass. This is encapsulated into
- * duk__parse_func_like_fnum().
- */
-
- duk_reg_t reg_temp;
- duk_int_t fnum;
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
-
- /* curr_token follows 'function' */
- fnum = duk__parse_func_like_fnum(comp_ctx, 0 /*is_decl*/, 0 /*is_setget*/);
- DUK_DDD(DUK_DDDPRINT("parsed inner function -> fnum %ld", (long) fnum));
-
- duk__emit_a_bc(comp_ctx,
- DUK_OP_CLOSURE,
- (duk_regconst_t) reg_temp /*a*/,
- (duk_regconst_t) fnum /*bc*/);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
-
- /* UNARY EXPRESSIONS */
-
- case DUK_TOK_DELETE: {
- /* Delete semantics are a bit tricky. The description in E5 specification
- * is kind of confusing, because it distinguishes between resolvability of
- * a reference (which is only known at runtime) seemingly at compile time
- * (= SyntaxError throwing).
- */
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- if (res->t == DUK_IVAL_VAR) {
- /* not allowed in strict mode, regardless of whether resolves;
- * in non-strict mode DELVAR handles both non-resolving and
- * resolving cases (the specification description is a bit confusing).
- */
-
- duk_reg_t reg_temp;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- if (comp_ctx->curr_func.is_strict) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_CANNOT_DELETE_IDENTIFIER);
- }
-
- DUK__SETTEMP(comp_ctx, temp_at_entry);
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
-
- duk_dup(ctx, res->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- /* register bound variables are non-configurable -> always false */
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_LDFALSE,
- (duk_regconst_t) reg_temp);
- } else {
- duk_dup(ctx, res->x1.valstack_idx);
- rc_varname = duk__getconst(comp_ctx);
- duk__emit_a_b(comp_ctx,
- DUK_OP_DELVAR,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) rc_varname);
- }
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- } else if (res->t == DUK_IVAL_PROP) {
- duk_reg_t reg_temp;
- duk_reg_t reg_obj;
- duk_regconst_t rc_key;
-
- DUK__SETTEMP(comp_ctx, temp_at_entry);
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- reg_obj = duk__ispec_toregconst_raw(comp_ctx, &res->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */
- rc_key = duk__ispec_toregconst_raw(comp_ctx, &res->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_DELPROP,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_obj,
- rc_key);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- } else {
- /* non-Reference deletion is always 'true', even in strict mode */
- duk_push_true(ctx);
- goto plain_value;
- }
- return;
- }
- case DUK_TOK_VOID: {
- duk__expr_toplain_ignore(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- duk_push_undefined(ctx);
- goto plain_value;
- }
- case DUK_TOK_TYPEOF: {
- /* 'typeof' must handle unresolvable references without throwing
- * a ReferenceError (E5 Section 11.4.3). Register mapped values
- * will never be unresolvable so special handling is only required
- * when an identifier is a "slow path" one.
- */
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
-
- if (res->t == DUK_IVAL_VAR) {
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
- duk_reg_t reg_temp;
-
- duk_dup(ctx, res->x1.valstack_idx);
- if (!duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- DUK_DDD(DUK_DDDPRINT("typeof for an identifier name which could not be resolved "
- "at compile time, need to use special run-time handling"));
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_TYPEOFID | DUK__EMIT_FLAG_B_IS_TARGET,
- reg_temp,
- rc_varname);
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
- }
-
- args = (DUK_EXTRAOP_TYPEOF << 8) + 0;
- goto unary_extraop;
- }
- case DUK_TOK_INCREMENT: {
- args = (DUK_OP_PREINCR << 8) + 0;
- goto preincdec;
- }
- case DUK_TOK_DECREMENT: {
- args = (DUK_OP_PREDECR << 8) + 0;
- goto preincdec;
- }
- case DUK_TOK_ADD: {
- /* unary plus */
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE &&
- duk_is_number(ctx, res->x1.valstack_idx)) {
- /* unary plus of a number is identity */
- ;
- return;
- }
- args = (DUK_EXTRAOP_UNP << 8) + 0;
- goto unary_extraop;
- }
- case DUK_TOK_SUB: {
- /* unary minus */
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE &&
- duk_is_number(ctx, res->x1.valstack_idx)) {
- /* this optimization is important to handle negative literals
- * (which are not directly provided by the lexical grammar)
- */
- duk_tval *tv_num;
- duk_double_union du;
-
- tv_num = DUK_GET_TVAL_POSIDX(ctx, res->x1.valstack_idx);
- DUK_ASSERT(tv_num != NULL);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_num));
- du.d = DUK_TVAL_GET_NUMBER(tv_num);
- du.d = -du.d;
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- DUK_TVAL_SET_NUMBER(tv_num, du.d);
- return;
- }
- args = (DUK_EXTRAOP_UNM << 8) + 0;
- goto unary_extraop;
- }
- case DUK_TOK_BNOT: {
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- args = (DUK_EXTRAOP_BNOT << 8) + 0;
- goto unary_extraop;
- }
- case DUK_TOK_LNOT: {
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- if (res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_VALUE) {
- /* Very minimal inlining to handle common idioms '!0' and '!1',
- * and also boolean arguments like '!false' and '!true'.
- */
- duk_tval *tv_val;
-
- tv_val = DUK_GET_TVAL_POSIDX(ctx, res->x1.valstack_idx);
- DUK_ASSERT(tv_val != NULL);
- if (DUK_TVAL_IS_NUMBER(tv_val)) {
- duk_double_t d;
- d = DUK_TVAL_GET_NUMBER(tv_val);
- if (d == 0.0) {
- /* Matches both +0 and -0 on purpose. */
- DUK_DDD(DUK_DDDPRINT("inlined lnot: !0 -> true"));
- DUK_TVAL_SET_BOOLEAN_TRUE(tv_val);
- return;
- } else if (d == 1.0) {
- DUK_DDD(DUK_DDDPRINT("inlined lnot: !1 -> false"));
- DUK_TVAL_SET_BOOLEAN_FALSE(tv_val);
- return;
- }
- } else if (DUK_TVAL_IS_BOOLEAN(tv_val)) {
- duk_small_int_t v;
- v = DUK_TVAL_GET_BOOLEAN(tv_val);
- DUK_DDD(DUK_DDDPRINT("inlined lnot boolean: %ld", (long) v));
- DUK_ASSERT(v == 0 || v == 1);
- DUK_TVAL_SET_BOOLEAN(tv_val, v ^ 0x01);
- return;
- }
- }
- args = (DUK_EXTRAOP_LNOT << 8) + 0;
- goto unary_extraop;
- }
-
- } /* end switch */
-
- DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR);
- return;
-
- unary_extraop:
- {
- /* Note: must coerce to a (writable) temp register, so that e.g. "!x" where x
- * is a reg-mapped variable works correctly (does not mutate the variable register).
- */
-
- duk_reg_t reg_temp;
- reg_temp = duk__ivalue_toregconst_raw(comp_ctx, res, -1 /*forced_reg*/, DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
- duk__emit_extraop_bc(comp_ctx,
- (args >> 8),
- (duk_regconst_t) reg_temp);
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
-
- preincdec:
- {
- /* preincrement and predecrement */
- duk_reg_t reg_res;
- duk_small_uint_t args_op = args >> 8;
-
- /* Specific assumptions for opcode numbering. */
- DUK_ASSERT(DUK_OP_PREINCR + 4 == DUK_OP_PREINCV);
- DUK_ASSERT(DUK_OP_PREDECR + 4 == DUK_OP_PREDECV);
- DUK_ASSERT(DUK_OP_PREINCR + 8 == DUK_OP_PREINCP);
- DUK_ASSERT(DUK_OP_PREDECR + 8 == DUK_OP_PREDECP);
-
- reg_res = DUK__ALLOCTEMP(comp_ctx);
-
- duk__expr(comp_ctx, res, DUK__BP_MULTIPLICATIVE /*rbp_flags*/); /* UnaryExpression */
- if (res->t == DUK_IVAL_VAR) {
- duk_hstring *h_varname;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- h_varname = duk_get_hstring(ctx, res->x1.valstack_idx);
- DUK_ASSERT(h_varname != NULL);
-
- if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) {
- goto syntax_error;
- }
-
- duk_dup(ctx, res->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- duk__emit_a_bc(comp_ctx,
- args_op, /* e.g. DUK_OP_PREINCR */
- (duk_regconst_t) reg_res,
- (duk_regconst_t) reg_varbind);
- } else {
- duk__emit_a_bc(comp_ctx,
- args_op + 4, /* e.g. DUK_OP_PREINCV */
- (duk_regconst_t) reg_res,
- rc_varname);
- }
-
- DUK_DDD(DUK_DDDPRINT("preincdec to '%!O' -> reg_varbind=%ld, rc_varname=%ld",
- (duk_heaphdr *) h_varname, (long) reg_varbind, (long) rc_varname));
- } else if (res->t == DUK_IVAL_PROP) {
- duk_reg_t reg_obj; /* allocate to reg only (not const) */
- duk_regconst_t rc_key;
- reg_obj = duk__ispec_toregconst_raw(comp_ctx, &res->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */
- rc_key = duk__ispec_toregconst_raw(comp_ctx, &res->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
- duk__emit_a_b_c(comp_ctx,
- args_op + 8, /* e.g. DUK_OP_PREINCP */
- (duk_regconst_t) reg_res,
- (duk_regconst_t) reg_obj,
- rc_key);
- } else {
- /* Technically return value is not needed because INVLHS will
- * unconditially throw a ReferenceError. Coercion is necessary
- * for proper semantics (consider ToNumber() called for an object).
- * Use DUK_EXTRAOP_UNP with a dummy register to get ToNumber().
- */
-
- duk__ivalue_toforcedreg(comp_ctx, res, reg_res);
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_UNP,
- reg_res); /* for side effects, result ignored */
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_INVLHS);
- }
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_res;
- DUK__SETTEMP(comp_ctx, reg_res + 1);
- return;
- }
-
- plain_value:
- {
- /* Stack top contains plain value */
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_VALUE;
- duk_replace(ctx, res->x1.valstack_idx);
- return;
- }
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_EXPRESSION);
-}
-
-/* XXX: add flag to indicate whether caller cares about return value; this
- * affects e.g. handling of assignment expressions. This change needs API
- * changes elsewhere too.
- */
-DUK_LOCAL void duk__expr_led(duk_compiler_ctx *comp_ctx, duk_ivalue *left, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_token *tk;
- duk_small_int_t tok;
- duk_uint32_t args; /* temp variable to pass constants and flags to shared code */
-
- /*
- * ctx->prev_token token to process with duk__expr_led()
- * ctx->curr_token updated by caller
- */
-
- comp_ctx->curr_func.led_count++;
-
- /* The token in the switch has already been eaten here */
- tk = &comp_ctx->prev_token;
- tok = tk->t;
-
- DUK_DDD(DUK_DDDPRINT("duk__expr_led(), prev_token.t=%ld, allow_in=%ld, paren_level=%ld",
- (long) tk->t, (long) comp_ctx->curr_func.allow_in, (long) comp_ctx->curr_func.paren_level));
-
- /* XXX: default priority for infix operators is duk__expr_lbp(tok) -> get it here? */
-
- switch (tok) {
-
- /* PRIMARY EXPRESSIONS */
-
- case DUK_TOK_PERIOD: {
- /* Property access expressions are critical for correct LHS ordering,
- * see comments in duk__expr()!
- *
- * A conservative approach would be to use duk__ivalue_totempconst()
- * for 'left'. However, allowing a reg-bound variable seems safe here
- * and is nice because "foo.bar" is a common expression. If the ivalue
- * is used in an expression a GETPROP will occur before any changes to
- * the base value can occur. If the ivalue is used as an assignment
- * LHS, the assignment code will ensure the base value is safe from
- * RHS mutation.
- */
-
- /* XXX: This now coerces an identifier into a GETVAR to a temp, which
- * causes an extra LDREG in call setup. It's sufficient to coerce to a
- * unary ivalue?
- */
- duk__ivalue_toplain(comp_ctx, left);
-
- /* NB: must accept reserved words as property name */
- if (comp_ctx->curr_token.t_nores != DUK_TOK_IDENTIFIER) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_EXPECTED_IDENTIFIER);
- }
-
- res->t = DUK_IVAL_PROP;
- duk__copy_ispec(comp_ctx, &left->x1, &res->x1); /* left.x1 -> res.x1 */
- DUK_ASSERT(comp_ctx->curr_token.str1 != NULL);
- duk_push_hstring(ctx, comp_ctx->curr_token.str1);
- duk_replace(ctx, res->x2.valstack_idx);
- res->x2.t = DUK_ISPEC_VALUE;
-
- /* special RegExp literal handling after IdentifierName */
- comp_ctx->curr_func.reject_regexp_in_adv = 1;
-
- duk__advance(comp_ctx);
- return;
- }
- case DUK_TOK_LBRACKET: {
- /* Property access expressions are critical for correct LHS ordering,
- * see comments in duk__expr()!
- */
-
- /* XXX: optimize temp reg use */
- /* XXX: similar coercion issue as in DUK_TOK_PERIOD */
- /* XXX: coerce to regs? it might be better for enumeration use, where the
- * same PROP ivalue is used multiple times. Or perhaps coerce PROP further
- * there?
- */
- /* XXX: for simple cases like x['y'] an unnecessary LDREG is
- * emitted for the base value; could avoid it if we knew that
- * the key expression is safe (e.g. just a single literal).
- */
-
- /* The 'left' value must not be a register bound variable
- * because it may be mutated during the rest of the expression
- * and E5.1 Section 11.2.1 specifies the order of evaluation
- * so that the base value is evaluated first.
- * See: test-bug-nested-prop-mutate.js.
- */
- duk__ivalue_totempconst(comp_ctx, left);
- duk__expr_toplain(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression, ']' terminates */
- duk__advance_expect(comp_ctx, DUK_TOK_RBRACKET);
-
- res->t = DUK_IVAL_PROP;
- duk__copy_ispec(comp_ctx, &res->x1, &res->x2); /* res.x1 -> res.x2 */
- duk__copy_ispec(comp_ctx, &left->x1, &res->x1); /* left.x1 -> res.x1 */
- return;
- }
- case DUK_TOK_LPAREN: {
- /* function call */
- duk_reg_t reg_cs = DUK__ALLOCTEMPS(comp_ctx, 2);
- duk_int_t nargs;
- duk_small_uint_t call_flags = 0;
-
- /*
- * XXX: attempt to get the call result to "next temp" whenever
- * possible to avoid unnecessary register shuffles.
- *
- * XXX: CSPROP (and CSREG) can overwrite the call target register, and save one temp,
- * if the call target is a temporary register and at the top of the temp reg "stack".
- */
-
- /*
- * Setup call: target and 'this' binding. Three cases:
- *
- * 1. Identifier base (e.g. "foo()")
- * 2. Property base (e.g. "foo.bar()")
- * 3. Register base (e.g. "foo()()"; i.e. when a return value is a function)
- */
-
- if (left->t == DUK_IVAL_VAR) {
- duk_hstring *h_varname;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- DUK_DDD(DUK_DDDPRINT("function call with identifier base"));
-
- h_varname = duk_get_hstring(ctx, left->x1.valstack_idx);
- DUK_ASSERT(h_varname != NULL);
- if (h_varname == DUK_HTHREAD_STRING_EVAL(thr)) {
- /* Potential direct eval call detected, flag the CALL
- * so that a run-time "direct eval" check is made and
- * special behavior may be triggered. Note that this
- * does not prevent 'eval' from being register bound.
- */
- DUK_DDD(DUK_DDDPRINT("function call with identifier 'eval' "
- "-> enabling EVALCALL flag, marking function "
- "as may_direct_eval"));
- call_flags |= DUK_BC_CALL_FLAG_EVALCALL;
-
- comp_ctx->curr_func.may_direct_eval = 1;
- }
-
- duk_dup(ctx, left->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- duk__emit_a_b(comp_ctx,
- DUK_OP_CSREG,
- (duk_regconst_t) (reg_cs + 0),
- (duk_regconst_t) reg_varbind);
- } else {
- duk__emit_a_b(comp_ctx,
- DUK_OP_CSVAR,
- (duk_regconst_t) (reg_cs + 0),
- rc_varname);
- }
- } else if (left->t == DUK_IVAL_PROP) {
- DUK_DDD(DUK_DDDPRINT("function call with property base"));
-
- duk__ispec_toforcedreg(comp_ctx, &left->x1, reg_cs + 0); /* base */
- duk__ispec_toforcedreg(comp_ctx, &left->x2, reg_cs + 1); /* key */
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_CSPROP,
- (duk_regconst_t) (reg_cs + 0),
- (duk_regconst_t) (reg_cs + 0),
- (duk_regconst_t) (reg_cs + 1)); /* in-place setup */
- } else {
- DUK_DDD(DUK_DDDPRINT("function call with register base"));
-
- duk__ivalue_toforcedreg(comp_ctx, left, reg_cs + 0);
- duk__emit_a_b(comp_ctx,
- DUK_OP_CSREG,
- (duk_regconst_t) (reg_cs + 0),
- (duk_regconst_t) (reg_cs + 0)); /* in-place setup */
- }
-
- DUK__SETTEMP(comp_ctx, reg_cs + 2);
- nargs = duk__parse_arguments(comp_ctx, res); /* parse args starting from "next temp" */
-
- /* Tailcalls are handled by back-patching the TAILCALL flag to the
- * already emitted instruction later (in return statement parser).
- * Since A and C have a special meaning here, they cannot be "shuffled".
- */
-
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_CALL | DUK__EMIT_FLAG_NO_SHUFFLE_A | DUK__EMIT_FLAG_NO_SHUFFLE_C,
- (duk_regconst_t) call_flags /*flags*/,
- (duk_regconst_t) reg_cs /*basereg*/,
- (duk_regconst_t) nargs /*numargs*/);
- DUK__SETTEMP(comp_ctx, reg_cs + 1); /* result in csreg */
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_cs;
- return;
- }
-
- /* POSTFIX EXPRESSION */
-
- case DUK_TOK_INCREMENT: {
- args = (DUK_OP_POSTINCR << 8) + 0;
- goto postincdec;
- }
- case DUK_TOK_DECREMENT: {
- args = (DUK_OP_POSTDECR << 8) + 0;
- goto postincdec;
- }
-
- /* MULTIPLICATIVE EXPRESSION */
-
- case DUK_TOK_MUL: {
- args = (DUK_OP_MUL << 8) + DUK__BP_MULTIPLICATIVE; /* UnaryExpression */
- goto binary;
- }
- case DUK_TOK_DIV: {
- args = (DUK_OP_DIV << 8) + DUK__BP_MULTIPLICATIVE; /* UnaryExpression */
- goto binary;
- }
- case DUK_TOK_MOD: {
- args = (DUK_OP_MOD << 8) + DUK__BP_MULTIPLICATIVE; /* UnaryExpression */
- goto binary;
- }
-
- /* ADDITIVE EXPRESSION */
-
- case DUK_TOK_ADD: {
- args = (DUK_OP_ADD << 8) + DUK__BP_ADDITIVE; /* MultiplicativeExpression */
- goto binary;
- }
- case DUK_TOK_SUB: {
- args = (DUK_OP_SUB << 8) + DUK__BP_ADDITIVE; /* MultiplicativeExpression */
- goto binary;
- }
-
- /* SHIFT EXPRESSION */
-
- case DUK_TOK_ALSHIFT: {
- /* << */
- args = (DUK_OP_BASL << 8) + DUK__BP_SHIFT;
- goto binary;
- }
- case DUK_TOK_ARSHIFT: {
- /* >> */
- args = (DUK_OP_BASR << 8) + DUK__BP_SHIFT;
- goto binary;
- }
- case DUK_TOK_RSHIFT: {
- /* >>> */
- args = (DUK_OP_BLSR << 8) + DUK__BP_SHIFT;
- goto binary;
- }
-
- /* RELATIONAL EXPRESSION */
-
- case DUK_TOK_LT: {
- /* < */
- args = (DUK_OP_LT << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
- case DUK_TOK_GT: {
- args = (DUK_OP_GT << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
- case DUK_TOK_LE: {
- args = (DUK_OP_LE << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
- case DUK_TOK_GE: {
- args = (DUK_OP_GE << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
- case DUK_TOK_INSTANCEOF: {
- args = (1 << 16 /*is_extra*/) + (DUK_EXTRAOP_INSTOF << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
- case DUK_TOK_IN: {
- args = (1 << 16 /*is_extra*/) + (DUK_EXTRAOP_IN << 8) + DUK__BP_RELATIONAL;
- goto binary;
- }
-
- /* EQUALITY EXPRESSION */
-
- case DUK_TOK_EQ: {
- args = (DUK_OP_EQ << 8) + DUK__BP_EQUALITY;
- goto binary;
- }
- case DUK_TOK_NEQ: {
- args = (DUK_OP_NEQ << 8) + DUK__BP_EQUALITY;
- goto binary;
- }
- case DUK_TOK_SEQ: {
- args = (DUK_OP_SEQ << 8) + DUK__BP_EQUALITY;
- goto binary;
- }
- case DUK_TOK_SNEQ: {
- args = (DUK_OP_SNEQ << 8) + DUK__BP_EQUALITY;
- goto binary;
- }
-
- /* BITWISE EXPRESSIONS */
-
- case DUK_TOK_BAND: {
- args = (DUK_OP_BAND << 8) + DUK__BP_BAND;
- goto binary;
- }
- case DUK_TOK_BXOR: {
- args = (DUK_OP_BXOR << 8) + DUK__BP_BXOR;
- goto binary;
- }
- case DUK_TOK_BOR: {
- args = (DUK_OP_BOR << 8) + DUK__BP_BOR;
- goto binary;
- }
-
- /* LOGICAL EXPRESSIONS */
-
- case DUK_TOK_LAND: {
- /* syntactically left-associative but parsed as right-associative */
- args = (1 << 8) + DUK__BP_LAND - 1;
- goto binary_logical;
- }
- case DUK_TOK_LOR: {
- /* syntactically left-associative but parsed as right-associative */
- args = (0 << 8) + DUK__BP_LOR - 1;
- goto binary_logical;
- }
-
- /* CONDITIONAL EXPRESSION */
-
- case DUK_TOK_QUESTION: {
- /* XXX: common reg allocation need is to reuse a sub-expression's temp reg,
- * but only if it really is a temp. Nothing fancy here now.
- */
- duk_reg_t reg_temp;
- duk_int_t pc_jump1;
- duk_int_t pc_jump2;
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__ivalue_toforcedreg(comp_ctx, left, reg_temp);
- duk__emit_if_true_skip(comp_ctx, reg_temp);
- pc_jump1 = duk__emit_jump_empty(comp_ctx); /* jump to false */
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp /*forced_reg*/); /* AssignmentExpression */
- duk__advance_expect(comp_ctx, DUK_TOK_COLON);
- pc_jump2 = duk__emit_jump_empty(comp_ctx); /* jump to end */
- duk__patch_jump_here(comp_ctx, pc_jump1);
- duk__expr_toforcedreg(comp_ctx, res, DUK__BP_COMMA /*rbp_flags*/, reg_temp /*forced_reg*/); /* AssignmentExpression */
- duk__patch_jump_here(comp_ctx, pc_jump2);
-
- DUK__SETTEMP(comp_ctx, reg_temp + 1);
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
-
- /* ASSIGNMENT EXPRESSION */
-
- case DUK_TOK_EQUALSIGN: {
- /*
- * Assignments are right associative, allows e.g.
- * a = 5;
- * a += b = 9; // same as a += (b = 9)
- * -> expression value 14, a = 14, b = 9
- *
- * Right associativiness is reflected in the BP for recursion,
- * "-1" ensures assignment operations are allowed.
- *
- * XXX: just use DUK__BP_COMMA (i.e. no need for 2-step bp levels)?
- */
- args = (DUK_OP_NONE << 8) + DUK__BP_ASSIGNMENT - 1; /* DUK_OP_NONE marks a 'plain' assignment */
- goto assign;
- }
- case DUK_TOK_ADD_EQ: {
- /* right associative */
- args = (DUK_OP_ADD << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_SUB_EQ: {
- /* right associative */
- args = (DUK_OP_SUB << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_MUL_EQ: {
- /* right associative */
- args = (DUK_OP_MUL << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_DIV_EQ: {
- /* right associative */
- args = (DUK_OP_DIV << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_MOD_EQ: {
- /* right associative */
- args = (DUK_OP_MOD << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_ALSHIFT_EQ: {
- /* right associative */
- args = (DUK_OP_BASL << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_ARSHIFT_EQ: {
- /* right associative */
- args = (DUK_OP_BASR << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_RSHIFT_EQ: {
- /* right associative */
- args = (DUK_OP_BLSR << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_BAND_EQ: {
- /* right associative */
- args = (DUK_OP_BAND << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_BOR_EQ: {
- /* right associative */
- args = (DUK_OP_BOR << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
- case DUK_TOK_BXOR_EQ: {
- /* right associative */
- args = (DUK_OP_BXOR << 8) + DUK__BP_ASSIGNMENT - 1;
- goto assign;
- }
-
- /* COMMA */
-
- case DUK_TOK_COMMA: {
- /* right associative */
-
- duk__ivalue_toplain_ignore(comp_ctx, left); /* need side effects, not value */
- duk__expr_toplain(comp_ctx, res, DUK__BP_COMMA - 1 /*rbp_flags*/);
-
- /* return 'res' (of right part) as our result */
- return;
- }
-
- default: {
- break;
- }
- }
-
- DUK_D(DUK_DPRINT("parse error: unexpected token: %ld", (long) tok));
- DUK_ERROR_SYNTAX(thr, DUK_STR_PARSE_ERROR);
- return;
-
-#if 0
- /* XXX: shared handling for 'duk__expr_lhs'? */
- if (comp_ctx->curr_func.paren_level == 0 && XXX) {
- comp_ctx->curr_func.duk__expr_lhs = 0;
- }
-#endif
-
- binary:
- /*
- * Shared handling of binary operations
- *
- * args = (is_extraop << 16) + (opcode << 8) + rbp
- */
- {
- duk__ivalue_toplain(comp_ctx, left);
- duk__expr_toplain(comp_ctx, res, args & 0xff /*rbp_flags*/);
-
- /* combine left->x1 and res->x1 (right->x1, really) -> (left->x1 OP res->x1) */
- DUK_ASSERT(left->t == DUK_IVAL_PLAIN);
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN);
-
- res->t = (args >> 16) ? DUK_IVAL_ARITH_EXTRAOP : DUK_IVAL_ARITH;
- res->op = (args >> 8) & 0xff;
-
- res->x2.t = res->x1.t;
- res->x2.regconst = res->x1.regconst;
- duk_copy(ctx, res->x1.valstack_idx, res->x2.valstack_idx);
-
- res->x1.t = left->x1.t;
- res->x1.regconst = left->x1.regconst;
- duk_copy(ctx, left->x1.valstack_idx, res->x1.valstack_idx);
-
- DUK_DDD(DUK_DDDPRINT("binary op, res: t=%ld, x1.t=%ld, x1.regconst=0x%08lx, x2.t=%ld, x2.regconst=0x%08lx",
- (long) res->t, (long) res->x1.t, (unsigned long) res->x1.regconst, (long) res->x2.t, (unsigned long) res->x2.regconst));
- return;
- }
-
- binary_logical:
- /*
- * Shared handling for logical AND and logical OR.
- *
- * args = (truthval << 8) + rbp
- *
- * Truthval determines when to skip right-hand-side.
- * For logical AND truthval=1, for logical OR truthval=0.
- *
- * See doc/compiler.rst for discussion on compiling logical
- * AND and OR expressions. The approach here is very simplistic,
- * generating extra jumps and multiple evaluations of truth values,
- * but generates code on-the-fly with only local back-patching.
- *
- * Both logical AND and OR are syntactically left-associated.
- * However, logical ANDs are compiled as right associative
- * expressions, i.e. "A && B && C" as "A && (B && C)", to allow
- * skip jumps to skip over the entire tail. Similarly for logical OR.
- */
-
- {
- duk_reg_t reg_temp;
- duk_int_t pc_jump;
- duk_small_uint_t args_truthval = args >> 8;
- duk_small_uint_t args_rbp = args & 0xff;
-
- /* XXX: unoptimal use of temps, resetting */
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
-
- duk__ivalue_toforcedreg(comp_ctx, left, reg_temp);
- duk__emit_a_b(comp_ctx,
- DUK_OP_IF | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) args_truthval,
- (duk_regconst_t) reg_temp); /* skip jump conditionally */
- pc_jump = duk__emit_jump_empty(comp_ctx);
- duk__expr_toforcedreg(comp_ctx, res, args_rbp /*rbp_flags*/, reg_temp /*forced_reg*/);
- duk__patch_jump_here(comp_ctx, pc_jump);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_temp;
- return;
- }
-
- assign:
- /*
- * Shared assignment expression handling
- *
- * args = (opcode << 8) + rbp
- *
- * If 'opcode' is DUK_OP_NONE, plain assignment without arithmetic.
- * Syntactically valid left-hand-side forms which are not accepted as
- * left-hand-side values (e.g. as in "f() = 1") must NOT cause a
- * SyntaxError, but rather a run-time ReferenceError.
- *
- * Assignment expression value is conceptually the LHS/RHS value
- * copied into a fresh temporary so that it won't change even if
- * LHS/RHS values change (e.g. when they're identifiers). Doing this
- * concretely produces inefficient bytecode, so we try to avoid the
- * extra temporary for some known-to-be-safe cases. Currently the
- * only safe case we detect is a "top level assignment", for example
- * "x = y + z;", where the assignment expression value is ignored.
- * See: test-dev-assign-expr.js and test-bug-assign-mutate-gh381.js.
- */
-
- {
- duk_small_uint_t args_op = args >> 8;
- duk_small_uint_t args_rbp = args & 0xff;
- duk_bool_t toplevel_assign;
-
- /* XXX: here we need to know if 'left' is left-hand-side compatible.
- * That information is no longer available from current expr parsing
- * state; it would need to be carried into the 'left' ivalue or by
- * some other means.
- */
-
- /* A top-level assignment is e.g. "x = y;". For these it's safe
- * to use the RHS as-is as the expression value, even if the RHS
- * is a reg-bound identifier. The RHS ('res') is right associative
- * so it has consumed all other assignment level operations; the
- * only relevant lower binding power construct is comma operator
- * which will ignore the expression value provided here.
- */
- toplevel_assign = (comp_ctx->curr_func.nud_count == 1 && /* one token before */
- comp_ctx->curr_func.led_count == 1); /* one operator (= assign) */
- DUK_DDD(DUK_DDDPRINT("assignment: nud_count=%ld, led_count=%ld, toplevel_assign=%ld",
- (long) comp_ctx->curr_func.nud_count,
- (long) comp_ctx->curr_func.led_count,
- (long) toplevel_assign));
-
- if (left->t == DUK_IVAL_VAR) {
- duk_hstring *h_varname;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- DUK_ASSERT(left->x1.t == DUK_ISPEC_VALUE); /* LHS is already side effect free */
-
- /* Keep the RHS as an unresolved ivalue for now, so it
- * can be a plain value or a unary/binary operation here.
- * We resolve it before finishing but doing it later allows
- * better bytecode in some cases.
- */
- duk__expr(comp_ctx, res, args_rbp /*rbp_flags*/);
-
- h_varname = duk_get_hstring(ctx, left->x1.valstack_idx);
- DUK_ASSERT(h_varname != NULL);
- if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) {
- /* E5 Section 11.13.1 (and others for other assignments), step 4 */
- goto syntax_error_lvalue;
- }
- duk_dup(ctx, left->x1.valstack_idx);
- (void) duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname);
-
- if (args_op == DUK_OP_NONE) {
- if (toplevel_assign) {
- /* Any 'res' will do. */
- DUK_DDD(DUK_DDDPRINT("plain assignment, toplevel assign, use as is"));
- } else {
- /* 'res' must be a plain ivalue, and not register-bound variable. */
- DUK_DDD(DUK_DDDPRINT("plain assignment, not toplevel assign, ensure not a reg-bound identifier"));
- if (res->t != DUK_IVAL_PLAIN || (res->x1.t == DUK_ISPEC_REGCONST &&
- (res->x1.regconst & DUK__CONST_MARKER) == 0 &&
- !DUK__ISTEMP(comp_ctx, res->x1.regconst))) {
- duk__ivalue_totempconst(comp_ctx, res);
- }
- }
- } else {
- duk__ivalue_toregconst(comp_ctx, res);
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
-
- if (reg_varbind >= 0) {
- duk_reg_t reg_res;
-
- if (toplevel_assign) {
- /* 'reg_varbind' is the operation result and can also
- * become the expression value for top level assignments
- * such as: "var x; x += y;".
- */
- reg_res = reg_varbind;
- } else {
- /* Not safe to use 'reg_varbind' as assignment expression
- * value, so go through a temp.
- */
- reg_res = DUK__ALLOCTEMP(comp_ctx);
- }
-
- duk__emit_a_b_c(comp_ctx,
- args_op,
- (duk_regconst_t) reg_res,
- (duk_regconst_t) reg_varbind,
- res->x1.regconst);
- res->x1.regconst = (duk_regconst_t) reg_res;
- } else {
- /* When LHS is not register bound, always go through a
- * temporary. No optimization for top level assignment.
- */
- duk_reg_t reg_temp;
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
-
- duk__emit_a_bc(comp_ctx,
- DUK_OP_GETVAR,
- (duk_regconst_t) reg_temp,
- rc_varname);
- duk__emit_a_b_c(comp_ctx,
- args_op,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_temp,
- res->x1.regconst);
- res->x1.regconst = (duk_regconst_t) reg_temp;
- }
-
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
- }
-
- /* At this point 'res' holds the potential expression value.
- * It can be basically any ivalue here, including a reg-bound
- * identifier (if code above deems it safe) or a unary/binary
- * operation. Operations must be resolved to a side effect free
- * plain value, and the side effects must happen exactly once.
- */
-
- if (reg_varbind >= 0) {
- if (res->t != DUK_IVAL_PLAIN) {
- /* Resolve 'res' directly into the LHS binding, and use
- * that as the expression value if safe. If not safe,
- * resolve to a temp/const and copy to LHS.
- */
- if (toplevel_assign) {
- duk__ivalue_toforcedreg(comp_ctx, res, (duk_int_t) reg_varbind);
- } else {
- duk__ivalue_totempconst(comp_ctx, res);
- duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */
- duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind);
- }
- } else {
- /* Use 'res' as the expression value (it's side effect
- * free and may be a plain value, a register, or a
- * constant) and write it to the LHS binding too.
- */
- duk__copy_ivalue(comp_ctx, res, left); /* use 'left' as a temp */
- duk__ivalue_toforcedreg(comp_ctx, left, (duk_int_t) reg_varbind);
- }
- } else {
- /* Only a reg fits into 'A' so coerce 'res' into a register
- * for PUTVAR.
- *
- * XXX: here the current A/B/C split is suboptimal: we could
- * just use 9 bits for reg_res (and support constants) and 17
- * instead of 18 bits for the varname const index.
- */
-
- duk__ivalue_toreg(comp_ctx, res);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- res->x1.regconst,
- rc_varname);
- }
-
- /* 'res' contains expression value */
- } else if (left->t == DUK_IVAL_PROP) {
- /* E5 Section 11.13.1 (and others) step 4 never matches for prop writes -> no check */
- duk_reg_t reg_obj;
- duk_regconst_t rc_key;
- duk_regconst_t rc_res;
- duk_reg_t reg_temp;
-
- /* Property access expressions ('a[b]') are critical to correct
- * LHS evaluation ordering, see test-dev-assign-eval-order*.js.
- * We must make sure that the LHS target slot (base object and
- * key) don't change during RHS evaluation. The only concrete
- * problem is a register reference to a variable-bound register
- * (i.e., non-temp). Require temp regs for both key and base.
- *
- * Don't allow a constant for the object (even for a number
- * etc), as it goes into the 'A' field of the opcode.
- */
-
- reg_obj = duk__ispec_toregconst_raw(comp_ctx,
- &left->x1,
- -1 /*forced_reg*/,
- DUK__IVAL_FLAG_REQUIRE_TEMP /*flags*/);
-
- rc_key = duk__ispec_toregconst_raw(comp_ctx,
- &left->x2,
- -1 /*forced_reg*/,
- DUK__IVAL_FLAG_REQUIRE_TEMP | DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
-
- /* Evaluate RHS only when LHS is safe. */
- duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/);
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN && res->x1.t == DUK_ISPEC_REGCONST);
-
- if (args_op == DUK_OP_NONE) {
- rc_res = res->x1.regconst;
- } else {
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_GETPROP,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_obj,
- rc_key);
- duk__emit_a_b_c(comp_ctx,
- args_op,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) reg_temp,
- res->x1.regconst);
- rc_res = (duk_regconst_t) reg_temp;
- }
-
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_PUTPROP | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) reg_obj,
- rc_key,
- rc_res);
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = rc_res;
- } else {
- /* No support for lvalues returned from new or function call expressions.
- * However, these must NOT cause compile-time SyntaxErrors, but run-time
- * ReferenceErrors. Both left and right sides of the assignment must be
- * evaluated before throwing a ReferenceError. For instance:
- *
- * f() = g();
- *
- * must result in f() being evaluated, then g() being evaluated, and
- * finally, a ReferenceError being thrown. See E5 Section 11.13.1.
- */
-
- duk_regconst_t rc_res;
-
- /* first evaluate LHS fully to ensure all side effects are out */
- duk__ivalue_toplain_ignore(comp_ctx, left);
-
- /* then evaluate RHS fully (its value becomes the expression value too) */
- rc_res = duk__expr_toregconst(comp_ctx, res, args_rbp /*rbp_flags*/);
-
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_INVLHS);
-
- /* XXX: this value is irrelevant because of INVLHS? */
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = rc_res;
- }
-
- return;
- }
-
- postincdec:
- {
- /*
- * Post-increment/decrement will return the original value as its
- * result value. However, even that value will be coerced using
- * ToNumber() which is quite awkward. Specific bytecode opcodes
- * are used to handle these semantics.
- *
- * Note that post increment/decrement has a "no LineTerminator here"
- * restriction. This is handled by duk__expr_lbp(), which forcibly terminates
- * the previous expression if a LineTerminator occurs before '++'/'--'.
- */
-
- duk_reg_t reg_res;
- duk_small_uint_t args_op = args >> 8;
-
- /* Specific assumptions for opcode numbering. */
- DUK_ASSERT(DUK_OP_POSTINCR + 4 == DUK_OP_POSTINCV);
- DUK_ASSERT(DUK_OP_POSTDECR + 4 == DUK_OP_POSTDECV);
- DUK_ASSERT(DUK_OP_POSTINCR + 8 == DUK_OP_POSTINCP);
- DUK_ASSERT(DUK_OP_POSTDECR + 8 == DUK_OP_POSTDECP);
-
- reg_res = DUK__ALLOCTEMP(comp_ctx);
-
- if (left->t == DUK_IVAL_VAR) {
- duk_hstring *h_varname;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- h_varname = duk_get_hstring(ctx, left->x1.valstack_idx);
- DUK_ASSERT(h_varname != NULL);
-
- if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) {
- goto syntax_error;
- }
-
- duk_dup(ctx, left->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- duk__emit_a_bc(comp_ctx,
- args_op, /* e.g. DUK_OP_POSTINCR */
- (duk_regconst_t) reg_res,
- (duk_regconst_t) reg_varbind);
- } else {
- duk__emit_a_bc(comp_ctx,
- args_op + 4, /* e.g. DUK_OP_POSTINCV */
- (duk_regconst_t) reg_res,
- rc_varname);
- }
-
- DUK_DDD(DUK_DDDPRINT("postincdec to '%!O' -> reg_varbind=%ld, rc_varname=%ld",
- (duk_heaphdr *) h_varname, (long) reg_varbind, (long) rc_varname));
- } else if (left->t == DUK_IVAL_PROP) {
- duk_reg_t reg_obj; /* allocate to reg only (not const) */
- duk_regconst_t rc_key;
-
- reg_obj = duk__ispec_toregconst_raw(comp_ctx, &left->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */
- rc_key = duk__ispec_toregconst_raw(comp_ctx, &left->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
- duk__emit_a_b_c(comp_ctx,
- args_op + 8, /* e.g. DUK_OP_POSTINCP */
- (duk_regconst_t) reg_res,
- (duk_regconst_t) reg_obj,
- rc_key);
- } else {
- /* Technically return value is not needed because INVLHS will
- * unconditially throw a ReferenceError. Coercion is necessary
- * for proper semantics (consider ToNumber() called for an object).
- * Use DUK_EXTRAOP_UNP with a dummy register to get ToNumber().
- */
- duk__ivalue_toforcedreg(comp_ctx, left, reg_res);
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_UNP,
- reg_res); /* for side effects, result ignored */
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_INVLHS);
- }
-
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_REGCONST;
- res->x1.regconst = (duk_regconst_t) reg_res;
- DUK__SETTEMP(comp_ctx, reg_res + 1);
- return;
- }
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_EXPRESSION);
- return;
-
- syntax_error_lvalue:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_LVALUE);
- return;
-}
-
-DUK_LOCAL duk_small_uint_t duk__expr_lbp(duk_compiler_ctx *comp_ctx) {
- duk_small_int_t tok = comp_ctx->curr_token.t;
-
- DUK_ASSERT(tok >= DUK_TOK_MINVAL && tok <= DUK_TOK_MAXVAL);
- DUK_ASSERT(sizeof(duk__token_lbp) == DUK_TOK_MAXVAL + 1);
-
- /* XXX: integrate support for this into led() instead?
- * Similar issue as post-increment/post-decrement.
- */
-
- /* prevent duk__expr_led() by using a binding power less than anything valid */
- if (tok == DUK_TOK_IN && !comp_ctx->curr_func.allow_in) {
- return 0;
- }
-
- if ((tok == DUK_TOK_DECREMENT || tok == DUK_TOK_INCREMENT) &&
- (comp_ctx->curr_token.lineterm)) {
- /* '++' or '--' in a post-increment/decrement position,
- * and a LineTerminator occurs between the operator and
- * the preceding expression. Force the previous expr
- * to terminate, in effect treating e.g. "a,b\n++" as
- * "a,b;++" (= SyntaxError).
- */
- return 0;
- }
-
- return DUK__TOKEN_LBP_GET_BP(duk__token_lbp[tok]); /* format is bit packed */
-}
-
-/*
- * Expression parsing.
- *
- * Upon entry to 'expr' and its variants, 'curr_tok' is assumed to be the
- * first token of the expression. Upon exit, 'curr_tok' will be the first
- * token not part of the expression (e.g. semicolon terminating an expression
- * statement).
- */
-
-#define DUK__EXPR_RBP_MASK 0xff
-#define DUK__EXPR_FLAG_REJECT_IN (1 << 8) /* reject 'in' token (used for for-in) */
-#define DUK__EXPR_FLAG_ALLOW_EMPTY (1 << 9) /* allow empty expression */
-#define DUK__EXPR_FLAG_REQUIRE_INIT (1 << 10) /* require initializer for var/const */
-
-/* main expression parser function */
-DUK_LOCAL void duk__expr(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_ivalue tmp_alloc; /* 'res' is used for "left", and 'tmp' for "right" */
- duk_ivalue *tmp = &tmp_alloc;
- duk_small_uint_t rbp;
-
- DUK__RECURSION_INCREASE(comp_ctx, thr);
-
- duk_require_stack(ctx, DUK__PARSE_EXPR_SLOTS);
-
- /* filter out flags from exprtop rbp_flags here to save space */
- rbp = rbp_flags & DUK__EXPR_RBP_MASK;
-
- DUK_DDD(DUK_DDDPRINT("duk__expr(), rbp_flags=%ld, rbp=%ld, allow_in=%ld, paren_level=%ld",
- (long) rbp_flags, (long) rbp, (long) comp_ctx->curr_func.allow_in,
- (long) comp_ctx->curr_func.paren_level));
-
- DUK_MEMZERO(&tmp_alloc, sizeof(tmp_alloc));
- tmp->x1.valstack_idx = duk_get_top(ctx);
- tmp->x2.valstack_idx = tmp->x1.valstack_idx + 1;
- duk_push_undefined(ctx);
- duk_push_undefined(ctx);
-
- /* XXX: where to release temp regs in intermediate expressions?
- * e.g. 1+2+3 -> don't inflate temp register count when parsing this.
- * that particular expression temp regs can be forced here.
- */
-
- /* XXX: increase ctx->expr_tokens here for every consumed token
- * (this would be a nice statistic)?
- */
-
- if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || comp_ctx->curr_token.t == DUK_TOK_RPAREN) {
- /* XXX: possibly incorrect handling of empty expression */
- DUK_DDD(DUK_DDDPRINT("empty expression"));
- if (!(rbp_flags & DUK__EXPR_FLAG_ALLOW_EMPTY)) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_EMPTY_EXPR_NOT_ALLOWED);
- }
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_VALUE;
- duk_push_undefined(ctx);
- duk_replace(ctx, res->x1.valstack_idx);
- goto cleanup;
- }
-
- duk__advance(comp_ctx);
- duk__expr_nud(comp_ctx, res); /* reuse 'res' as 'left' */
- while (rbp < duk__expr_lbp(comp_ctx)) {
- duk__advance(comp_ctx);
- duk__expr_led(comp_ctx, res, tmp);
- duk__copy_ivalue(comp_ctx, tmp, res); /* tmp -> res */
- }
-
- cleanup:
- /* final result is already in 'res' */
-
- duk_pop_2(ctx);
-
- DUK__RECURSION_DECREASE(comp_ctx, thr);
-}
-
-DUK_LOCAL void duk__exprtop(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk_hthread *thr = comp_ctx->thr;
-
- /* Note: these variables must reside in 'curr_func' instead of the global
- * context: when parsing function expressions, expression parsing is nested.
- */
- comp_ctx->curr_func.nud_count = 0;
- comp_ctx->curr_func.led_count = 0;
- comp_ctx->curr_func.paren_level = 0;
- comp_ctx->curr_func.expr_lhs = 1;
- comp_ctx->curr_func.allow_in = (rbp_flags & DUK__EXPR_FLAG_REJECT_IN ? 0 : 1);
-
- duk__expr(comp_ctx, res, rbp_flags);
-
- if (!(rbp_flags & DUK__EXPR_FLAG_ALLOW_EMPTY) && duk__expr_is_empty(comp_ctx)) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_EMPTY_EXPR_NOT_ALLOWED);
- }
-}
-
-/* A bunch of helpers (for size optimization) that combine duk__expr()/duk__exprtop()
- * and result conversions.
- *
- * Each helper needs at least 2-3 calls to make it worth while to wrap.
- */
-
-#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__expr_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- return duk__ivalue_toreg(comp_ctx, res);
-}
-#endif
-
-#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__expr_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- return duk__ivalue_totemp(comp_ctx, res);
-}
-#endif
-
-DUK_LOCAL void duk__expr_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg) {
- DUK_ASSERT(forced_reg >= 0);
- duk__expr(comp_ctx, res, rbp_flags);
- duk__ivalue_toforcedreg(comp_ctx, res, forced_reg);
-}
-
-DUK_LOCAL duk_regconst_t duk__expr_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- return duk__ivalue_toregconst(comp_ctx, res);
-}
-
-#if 0 /* unused */
-DUK_LOCAL duk_regconst_t duk__expr_totempconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- return duk__ivalue_totempconst(comp_ctx, res);
-}
-#endif
-
-DUK_LOCAL void duk__expr_toplain(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- duk__ivalue_toplain(comp_ctx, res);
-}
-
-DUK_LOCAL void duk__expr_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__expr(comp_ctx, res, rbp_flags);
- duk__ivalue_toplain_ignore(comp_ctx, res);
-}
-
-DUK_LOCAL duk_reg_t duk__exprtop_toreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__exprtop(comp_ctx, res, rbp_flags);
- return duk__ivalue_toreg(comp_ctx, res);
-}
-
-#if 0 /* unused */
-DUK_LOCAL duk_reg_t duk__exprtop_totemp(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__exprtop(comp_ctx, res, rbp_flags);
- return duk__ivalue_totemp(comp_ctx, res);
-}
-#endif
-
-DUK_LOCAL void duk__exprtop_toforcedreg(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags, duk_reg_t forced_reg) {
- DUK_ASSERT(forced_reg >= 0);
- duk__exprtop(comp_ctx, res, rbp_flags);
- duk__ivalue_toforcedreg(comp_ctx, res, forced_reg);
-}
-
-DUK_LOCAL duk_regconst_t duk__exprtop_toregconst(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t rbp_flags) {
- duk__exprtop(comp_ctx, res, rbp_flags);
- return duk__ivalue_toregconst(comp_ctx, res);
-}
-
-#if 0 /* unused */
-DUK_LOCAL void duk__exprtop_toplain_ignore(duk_compiler_ctx *comp_ctx, duk_ivalue *res, int rbp_flags) {
- duk__exprtop(comp_ctx, res, rbp_flags);
- duk__ivalue_toplain_ignore(comp_ctx, res);
-}
-#endif
-
-/*
- * Parse an individual source element (top level statement) or a statement.
- *
- * Handles labeled statements automatically (peeling away labels before
- * parsing an expression that follows the label(s)).
- *
- * Upon entry, 'curr_tok' contains the first token of the statement (parsed
- * in "allow regexp literal" mode). Upon exit, 'curr_tok' contains the first
- * token following the statement (if the statement has a terminator, this is
- * the token after the terminator).
- */
-
-#ifdef DUK__HAS_VAL
-#undef DUK__HAS_VAL
-#endif
-#ifdef DUK__HAS_TERM
-#undef DUK__HAS_TERM
-#endif
-#ifdef DUK__ALLOW_AUTO_SEMI_ALWAYS
-#undef DUK__ALLOW_AUTO_SEMI_ALWAYS
-#endif
-#ifdef DUK__STILL_PROLOGUE
-#undef DUK__STILL_PROLOGUE
-#endif
-#ifdef DUK__IS_TERMINAL
-#undef DUK__IS_TERMINAL
-#endif
-
-#define DUK__HAS_VAL (1 << 0) /* stmt has non-empty value */
-#define DUK__HAS_TERM (1 << 1) /* stmt has explicit/implicit semicolon terminator */
-#define DUK__ALLOW_AUTO_SEMI_ALWAYS (1 << 2) /* allow automatic semicolon even without lineterm (compatibility) */
-#define DUK__STILL_PROLOGUE (1 << 3) /* statement does not terminate directive prologue */
-#define DUK__IS_TERMINAL (1 << 4) /* statement is guaranteed to be terminal (control doesn't flow to next statement) */
-
-/* Parse a single variable declaration (e.g. "i" or "i=10"). A leading 'var'
- * has already been eaten. These is no return value in 'res', it is used only
- * as a temporary.
- *
- * When called from 'for-in' statement parser, the initializer expression must
- * not allow the 'in' token. The caller supply additional expression parsing
- * flags (like DUK__EXPR_FLAG_REJECT_IN) in 'expr_flags'.
- *
- * Finally, out_rc_varname and out_reg_varbind are updated to reflect where
- * the identifier is bound:
- *
- * If register bound: out_reg_varbind >= 0, out_rc_varname == 0 (ignore)
- * If not register bound: out_reg_varbind < 0, out_rc_varname >= 0
- *
- * These allow the caller to use the variable for further assignment, e.g.
- * as is done in 'for-in' parsing.
- */
-
-DUK_LOCAL void duk__parse_var_decl(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags, duk_reg_t *out_reg_varbind, duk_regconst_t *out_rc_varname) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *h_varname;
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- /* assume 'var' has been eaten */
-
- /* Note: Identifier rejects reserved words */
- if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) {
- goto syntax_error;
- }
- h_varname = comp_ctx->curr_token.str1;
-
- DUK_ASSERT(h_varname != NULL);
-
- /* strict mode restrictions (E5 Section 12.2.1) */
- if (duk__hstring_is_eval_or_arguments_in_strict_mode(comp_ctx, h_varname)) {
- goto syntax_error;
- }
-
- /* register declarations in first pass */
- if (comp_ctx->curr_func.in_scanning) {
- duk_uarridx_t n;
- DUK_DDD(DUK_DDDPRINT("register variable declaration %!O in pass 1",
- (duk_heaphdr *) h_varname));
- n = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.decls_idx);
- duk_push_hstring(ctx, h_varname);
- duk_put_prop_index(ctx, comp_ctx->curr_func.decls_idx, n);
- duk_push_int(ctx, DUK_DECL_TYPE_VAR + (0 << 8));
- duk_put_prop_index(ctx, comp_ctx->curr_func.decls_idx, n + 1);
- }
-
- duk_push_hstring(ctx, h_varname); /* push before advancing to keep reachable */
-
- /* register binding lookup is based on varmap (even in first pass) */
- duk_dup_top(ctx);
- (void) duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname);
-
- duk__advance(comp_ctx); /* eat identifier */
-
- if (comp_ctx->curr_token.t == DUK_TOK_EQUALSIGN) {
- duk__advance(comp_ctx);
-
- DUK_DDD(DUK_DDDPRINT("vardecl, assign to '%!O' -> reg_varbind=%ld, rc_varname=%ld",
- (duk_heaphdr *) h_varname, (long) reg_varbind, (long) rc_varname));
-
- duk__exprtop(comp_ctx, res, DUK__BP_COMMA | expr_flags /*rbp_flags*/); /* AssignmentExpression */
-
- if (reg_varbind >= 0) {
- duk__ivalue_toforcedreg(comp_ctx, res, reg_varbind);
- } else {
- duk_reg_t reg_val;
- reg_val = duk__ivalue_toreg(comp_ctx, res);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) reg_val,
- rc_varname);
- }
- } else {
- if (expr_flags & DUK__EXPR_FLAG_REQUIRE_INIT) {
- /* Used for minimal 'const': initializer required. */
- goto syntax_error;
- }
- }
-
- duk_pop(ctx); /* pop varname */
-
- *out_rc_varname = rc_varname;
- *out_reg_varbind = reg_varbind;
-
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_VAR_DECLARATION);
-}
-
-DUK_LOCAL void duk__parse_var_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_small_uint_t expr_flags) {
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- duk__advance(comp_ctx); /* eat 'var' */
-
- for (;;) {
- /* rc_varname and reg_varbind are ignored here */
- duk__parse_var_decl(comp_ctx, res, 0 | expr_flags, &reg_varbind, &rc_varname);
-
- if (comp_ctx->curr_token.t != DUK_TOK_COMMA) {
- break;
- }
- duk__advance(comp_ctx);
- }
-}
-
-DUK_LOCAL void duk__parse_for_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_int_t pc_v34_lhs; /* start variant 3/4 left-hand-side code (L1 in doc/compiler.rst example) */
- duk_reg_t temp_reset; /* knock back "next temp" to this whenever possible */
- duk_reg_t reg_temps; /* preallocated temporaries (2) for variants 3 and 4 */
-
- DUK_DDD(DUK_DDDPRINT("start parsing a for/for-in statement"));
-
- /* Two temporaries are preallocated here for variants 3 and 4 which need
- * registers which are never clobbered by expressions in the loop
- * (concretely: for the enumerator object and the next enumerated value).
- * Variants 1 and 2 "release" these temps.
- */
-
- reg_temps = DUK__ALLOCTEMPS(comp_ctx, 2);
-
- temp_reset = DUK__GETTEMP(comp_ctx);
-
- /*
- * For/for-in main variants are:
- *
- * 1. for (ExpressionNoIn_opt; Expression_opt; Expression_opt) Statement
- * 2. for (var VariableDeclarationNoIn; Expression_opt; Expression_opt) Statement
- * 3. for (LeftHandSideExpression in Expression) Statement
- * 4. for (var VariableDeclarationNoIn in Expression) Statement
- *
- * Parsing these without arbitrary lookahead or backtracking is relatively
- * tricky but we manage to do so for now.
- *
- * See doc/compiler.rst for a detailed discussion of control flow
- * issues, evaluation order issues, etc.
- */
-
- duk__advance(comp_ctx); /* eat 'for' */
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- DUK_DDD(DUK_DDDPRINT("detecting for/for-in loop variant, pc=%ld", (long) duk__get_current_pc(comp_ctx)));
-
- /* a label site has been emitted by duk__parse_stmt() automatically
- * (it will also emit the ENDLABEL).
- */
-
- if (comp_ctx->curr_token.t == DUK_TOK_VAR) {
- /*
- * Variant 2 or 4
- */
-
- duk_reg_t reg_varbind; /* variable binding register if register-bound (otherwise < 0) */
- duk_regconst_t rc_varname; /* variable name reg/const, if variable not register-bound */
-
- duk__advance(comp_ctx); /* eat 'var' */
- duk__parse_var_decl(comp_ctx, res, DUK__EXPR_FLAG_REJECT_IN, &reg_varbind, &rc_varname);
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- if (comp_ctx->curr_token.t == DUK_TOK_IN) {
- /*
- * Variant 4
- */
-
- DUK_DDD(DUK_DDDPRINT("detected for variant 4: for (var VariableDeclarationNoIn in Expression) Statement"));
- pc_v34_lhs = duk__get_current_pc(comp_ctx); /* jump is inserted here */
- if (reg_varbind >= 0) {
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDREG,
- (duk_regconst_t) reg_varbind,
- (duk_regconst_t) (reg_temps + 0));
- } else {
- duk__emit_a_bc(comp_ctx,
- DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) (reg_temps + 0),
- rc_varname);
- }
- goto parse_3_or_4;
- } else {
- /*
- * Variant 2
- */
-
- DUK_DDD(DUK_DDDPRINT("detected for variant 2: for (var VariableDeclarationNoIn; Expression_opt; Expression_opt) Statement"));
- for (;;) {
- /* more initializers */
- if (comp_ctx->curr_token.t != DUK_TOK_COMMA) {
- break;
- }
- DUK_DDD(DUK_DDDPRINT("variant 2 has another variable initializer"));
-
- duk__advance(comp_ctx); /* eat comma */
- duk__parse_var_decl(comp_ctx, res, DUK__EXPR_FLAG_REJECT_IN, &reg_varbind, &rc_varname);
- }
- goto parse_1_or_2;
- }
- } else {
- /*
- * Variant 1 or 3
- */
-
- pc_v34_lhs = duk__get_current_pc(comp_ctx); /* jump is inserted here (variant 3) */
-
- /* Note that duk__exprtop() here can clobber any reg above current temp_next,
- * so any loop variables (e.g. enumerator) must be "preallocated".
- */
-
- /* don't coerce yet to a plain value (variant 3 needs special handling) */
- duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_REJECT_IN | DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression */
- if (comp_ctx->curr_token.t == DUK_TOK_IN) {
- /*
- * Variant 3
- */
-
- /* XXX: need to determine LHS type, and check that it is LHS compatible */
- DUK_DDD(DUK_DDDPRINT("detected for variant 3: for (LeftHandSideExpression in Expression) Statement"));
- if (duk__expr_is_empty(comp_ctx)) {
- goto syntax_error; /* LeftHandSideExpression does not allow empty expression */
- }
-
- if (res->t == DUK_IVAL_VAR) {
- duk_reg_t reg_varbind;
- duk_regconst_t rc_varname;
-
- duk_dup(ctx, res->x1.valstack_idx);
- if (duk__lookup_lhs(comp_ctx, &reg_varbind, &rc_varname)) {
- duk__emit_a_bc(comp_ctx,
- DUK_OP_LDREG,
- (duk_regconst_t) reg_varbind,
- (duk_regconst_t) (reg_temps + 0));
- } else {
- duk__emit_a_bc(comp_ctx,
- DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) (reg_temps + 0),
- rc_varname);
- }
- } else if (res->t == DUK_IVAL_PROP) {
- /* Don't allow a constant for the object (even for a number etc), as
- * it goes into the 'A' field of the opcode.
- */
- duk_reg_t reg_obj;
- duk_regconst_t rc_key;
- reg_obj = duk__ispec_toregconst_raw(comp_ctx, &res->x1, -1 /*forced_reg*/, 0 /*flags*/); /* don't allow const */
- rc_key = duk__ispec_toregconst_raw(comp_ctx, &res->x2, -1 /*forced_reg*/, DUK__IVAL_FLAG_ALLOW_CONST /*flags*/);
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_PUTPROP | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) reg_obj,
- rc_key,
- (duk_regconst_t) (reg_temps + 0));
- } else {
- duk__ivalue_toplain_ignore(comp_ctx, res); /* just in case */
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_INVLHS);
- }
- goto parse_3_or_4;
- } else {
- /*
- * Variant 1
- */
-
- DUK_DDD(DUK_DDDPRINT("detected for variant 1: for (ExpressionNoIn_opt; Expression_opt; Expression_opt) Statement"));
- duk__ivalue_toplain_ignore(comp_ctx, res);
- goto parse_1_or_2;
- }
- }
-
- parse_1_or_2:
- /*
- * Parse variant 1 or 2. The first part expression (which differs
- * in the variants) has already been parsed and its code emitted.
- *
- * reg_temps + 0: unused
- * reg_temps + 1: unused
- */
- {
- duk_regconst_t rc_cond;
- duk_int_t pc_l1, pc_l2, pc_l3, pc_l4;
- duk_int_t pc_jumpto_l3, pc_jumpto_l4;
- duk_bool_t expr_c_empty;
-
- DUK_DDD(DUK_DDDPRINT("shared code for parsing variants 1 and 2"));
-
- /* "release" preallocated temps since we won't need them */
- temp_reset = reg_temps + 0;
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_SEMICOLON);
-
- pc_l1 = duk__get_current_pc(comp_ctx);
- duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression_opt */
- if (duk__expr_is_empty(comp_ctx)) {
- /* no need to coerce */
- pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* to body */
- pc_jumpto_l4 = -1; /* omitted */
- } else {
- rc_cond = duk__ivalue_toregconst(comp_ctx, res);
- duk__emit_if_false_skip(comp_ctx, rc_cond);
- pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* to body */
- pc_jumpto_l4 = duk__emit_jump_empty(comp_ctx); /* to exit */
- }
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_SEMICOLON);
-
- pc_l2 = duk__get_current_pc(comp_ctx);
- duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR | DUK__EXPR_FLAG_ALLOW_EMPTY /*rbp_flags*/); /* Expression_opt */
- if (duk__expr_is_empty(comp_ctx)) {
- /* no need to coerce */
- expr_c_empty = 1;
- /* JUMP L1 omitted */
- } else {
- duk__ivalue_toplain_ignore(comp_ctx, res);
- expr_c_empty = 0;
- duk__emit_jump(comp_ctx, pc_l1);
- }
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- pc_l3 = duk__get_current_pc(comp_ctx);
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- if (expr_c_empty) {
- duk__emit_jump(comp_ctx, pc_l1);
- } else {
- duk__emit_jump(comp_ctx, pc_l2);
- }
- /* temp reset is not necessary after duk__parse_stmt(), which already does it */
-
- pc_l4 = duk__get_current_pc(comp_ctx);
-
- DUK_DDD(DUK_DDDPRINT("patching jumps: jumpto_l3: %ld->%ld, jumpto_l4: %ld->%ld, "
- "break: %ld->%ld, continue: %ld->%ld",
- (long) pc_jumpto_l3, (long) pc_l3, (long) pc_jumpto_l4, (long) pc_l4,
- (long) (pc_label_site + 1), (long) pc_l4, (long) (pc_label_site + 2), (long) pc_l2));
-
- duk__patch_jump(comp_ctx, pc_jumpto_l3, pc_l3);
- duk__patch_jump(comp_ctx, pc_jumpto_l4, pc_l4);
- duk__patch_jump(comp_ctx,
- pc_label_site + 1,
- pc_l4); /* break jump */
- duk__patch_jump(comp_ctx,
- pc_label_site + 2,
- expr_c_empty ? pc_l1 : pc_l2); /* continue jump */
- }
- goto finished;
-
- parse_3_or_4:
- /*
- * Parse variant 3 or 4.
- *
- * For variant 3 (e.g. "for (A in C) D;") the code for A (except the
- * final property/variable write) has already been emitted. The first
- * instruction of that code is at pc_v34_lhs; a JUMP needs to be inserted
- * there to satisfy control flow needs.
- *
- * For variant 4, if the variable declaration had an initializer
- * (e.g. "for (var A = B in C) D;") the code for the assignment
- * (B) has already been emitted.
- *
- * Variables set before entering here:
- *
- * pc_v34_lhs: insert a "JUMP L2" here (see doc/compiler.rst example).
- * reg_temps + 0: iteration target value (written to LHS)
- * reg_temps + 1: enumerator object
- */
- {
- duk_int_t pc_l1, pc_l2, pc_l3, pc_l4, pc_l5;
- duk_int_t pc_jumpto_l2, pc_jumpto_l3, pc_jumpto_l4, pc_jumpto_l5;
- duk_reg_t reg_target;
-
- DUK_DDD(DUK_DDDPRINT("shared code for parsing variants 3 and 4, pc_v34_lhs=%ld", (long) pc_v34_lhs));
-
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- /* First we need to insert a jump in the middle of previously
- * emitted code to get the control flow right. No jumps can
- * cross the position where the jump is inserted. See doc/compiler.rst
- * for discussion on the intricacies of control flow and side effects
- * for variants 3 and 4.
- */
-
- duk__insert_jump_entry(comp_ctx, pc_v34_lhs);
- pc_jumpto_l2 = pc_v34_lhs; /* inserted jump */
- pc_l1 = pc_v34_lhs + 1; /* +1, right after inserted jump */
-
- /* The code for writing reg_temps + 0 to the left hand side has already
- * been emitted.
- */
-
- pc_jumpto_l3 = duk__emit_jump_empty(comp_ctx); /* -> loop body */
-
- duk__advance(comp_ctx); /* eat 'in' */
-
- /* Parse enumeration target and initialize enumerator. For 'null' and 'undefined',
- * INITENUM will creates a 'null' enumerator which works like an empty enumerator
- * (E5 Section 12.6.4, step 3). Note that INITENUM requires the value to be in a
- * register (constant not allowed).
- */
-
- pc_l2 = duk__get_current_pc(comp_ctx);
- reg_target = duk__exprtop_toreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/); /* Expression */
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_INITENUM | DUK__EMIT_FLAG_B_IS_TARGET,
- (duk_regconst_t) (reg_temps + 1),
- (duk_regconst_t) reg_target);
- pc_jumpto_l4 = duk__emit_jump_empty(comp_ctx);
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- pc_l3 = duk__get_current_pc(comp_ctx);
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- /* temp reset is not necessary after duk__parse_stmt(), which already does it */
-
- /* NEXTENUM needs a jump slot right after the main opcode.
- * We need the code emitter to reserve the slot: if there's
- * target shuffling, the target shuffle opcodes must happen
- * after the jump slot (for NEXTENUM the shuffle opcodes are
- * not needed if the enum is finished).
- */
- pc_l4 = duk__get_current_pc(comp_ctx);
- duk__emit_extraop_b_c(comp_ctx,
- DUK_EXTRAOP_NEXTENUM | DUK__EMIT_FLAG_B_IS_TARGET | DUK__EMIT_FLAG_RESERVE_JUMPSLOT,
- (duk_regconst_t) (reg_temps + 0),
- (duk_regconst_t) (reg_temps + 1));
- pc_jumpto_l5 = comp_ctx->emit_jumpslot_pc; /* NEXTENUM jump slot: executed when enum finished */
- duk__emit_jump(comp_ctx, pc_l1); /* jump to next loop, using reg_v34_iter as iterated value */
-
- pc_l5 = duk__get_current_pc(comp_ctx);
-
- /* XXX: since the enumerator may be a memory expensive object,
- * perhaps clear it explicitly here? If so, break jump must
- * go through this clearing operation.
- */
-
- DUK_DDD(DUK_DDDPRINT("patching jumps: jumpto_l2: %ld->%ld, jumpto_l3: %ld->%ld, "
- "jumpto_l4: %ld->%ld, jumpto_l5: %ld->%ld, "
- "break: %ld->%ld, continue: %ld->%ld",
- (long) pc_jumpto_l2, (long) pc_l2, (long) pc_jumpto_l3, (long) pc_l3,
- (long) pc_jumpto_l4, (long) pc_l4, (long) pc_jumpto_l5, (long) pc_l5,
- (long) (pc_label_site + 1), (long) pc_l5, (long) (pc_label_site + 2), (long) pc_l4));
-
- duk__patch_jump(comp_ctx, pc_jumpto_l2, pc_l2);
- duk__patch_jump(comp_ctx, pc_jumpto_l3, pc_l3);
- duk__patch_jump(comp_ctx, pc_jumpto_l4, pc_l4);
- duk__patch_jump(comp_ctx, pc_jumpto_l5, pc_l5);
- duk__patch_jump(comp_ctx, pc_label_site + 1, pc_l5); /* break jump */
- duk__patch_jump(comp_ctx, pc_label_site + 2, pc_l4); /* continue jump */
- }
- goto finished;
-
- finished:
- DUK_DDD(DUK_DDDPRINT("end parsing a for/for-in statement"));
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_FOR);
-}
-
-DUK_LOCAL void duk__parse_switch_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) {
- duk_hthread *thr = comp_ctx->thr;
- duk_reg_t temp_at_loop;
- duk_regconst_t rc_switch; /* reg/const for switch value */
- duk_regconst_t rc_case; /* reg/const for case value */
- duk_reg_t reg_temp; /* general temp register */
- duk_int_t pc_prevcase = -1;
- duk_int_t pc_prevstmt = -1;
- duk_int_t pc_default = -1; /* -1 == not set, -2 == pending (next statement list) */
-
- /* Note: negative pc values are ignored when patching jumps, so no explicit checks needed */
-
- /*
- * Switch is pretty complicated because of several conflicting concerns:
- *
- * - Want to generate code without an intermediate representation,
- * i.e., in one go
- *
- * - Case selectors are expressions, not values, and may thus e.g. throw
- * exceptions (which causes evaluation order concerns)
- *
- * - Evaluation semantics of case selectors and default clause need to be
- * carefully implemented to provide correct behavior even with case value
- * side effects
- *
- * - Fall through case and default clauses; avoiding dead JUMPs if case
- * ends with an unconditional jump (a break or a continue)
- *
- * - The same case value may occur multiple times, but evaluation rules
- * only process the first match before switching to a "propagation" mode
- * where case values are no longer evaluated
- *
- * See E5 Section 12.11. Also see doc/compiler.rst for compilation
- * discussion.
- */
-
- duk__advance(comp_ctx);
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
- rc_switch = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
- duk__advance_expect(comp_ctx, DUK_TOK_LCURLY);
-
- DUK_DDD(DUK_DDDPRINT("switch value in register %ld", (long) rc_switch));
-
- temp_at_loop = DUK__GETTEMP(comp_ctx);
-
- for (;;) {
- duk_int_t num_stmts;
- duk_small_int_t tok;
-
- /* sufficient for keeping temp reg numbers in check */
- DUK__SETTEMP(comp_ctx, temp_at_loop);
-
- if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) {
- break;
- }
-
- /*
- * Parse a case or default clause.
- */
-
- if (comp_ctx->curr_token.t == DUK_TOK_CASE) {
- /*
- * Case clause.
- *
- * Note: cannot use reg_case as a temp register (for SEQ target)
- * because it may be a constant.
- */
-
- duk__patch_jump_here(comp_ctx, pc_prevcase); /* chain jumps for case
- * evaluation and checking
- */
-
- duk__advance(comp_ctx);
- rc_case = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__advance_expect(comp_ctx, DUK_TOK_COLON);
-
- reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_SEQ,
- (duk_regconst_t) reg_temp,
- rc_switch,
- rc_case);
- duk__emit_if_true_skip(comp_ctx, (duk_regconst_t) reg_temp);
-
- /* jump to next case clause */
- pc_prevcase = duk__emit_jump_empty(comp_ctx); /* no match, next case */
-
- /* statements go here (if any) on next loop */
- } else if (comp_ctx->curr_token.t == DUK_TOK_DEFAULT) {
- /*
- * Default clause.
- */
-
- if (pc_default >= 0) {
- goto syntax_error;
- }
- duk__advance(comp_ctx);
- duk__advance_expect(comp_ctx, DUK_TOK_COLON);
-
- /* Fix for https://github.com/svaarala/duktape/issues/155:
- * If 'default' is first clause (detected by pc_prevcase < 0)
- * we need to ensure we stay in the matching chain.
- */
- if (pc_prevcase < 0) {
- DUK_DD(DUK_DDPRINT("default clause is first, emit prevcase jump"));
- pc_prevcase = duk__emit_jump_empty(comp_ctx);
- }
-
- /* default clause matches next statement list (if any) */
- pc_default = -2;
- } else {
- /* Code is not accepted before the first case/default clause */
- goto syntax_error;
- }
-
- /*
- * Parse code after the clause. Possible terminators are
- * 'case', 'default', and '}'.
- *
- * Note that there may be no code at all, not even an empty statement,
- * between case clauses. This must be handled just like an empty statement
- * (omitting seemingly pointless JUMPs), to avoid situations like
- * test-bug-case-fallthrough.js.
- */
-
- num_stmts = 0;
- if (pc_default == -2) {
- pc_default = duk__get_current_pc(comp_ctx);
- }
-
- /* Note: this is correct even for default clause statements:
- * they participate in 'fall-through' behavior even if the
- * default clause is in the middle.
- */
- duk__patch_jump_here(comp_ctx, pc_prevstmt); /* chain jumps for 'fall-through'
- * after a case matches.
- */
-
- for (;;) {
- tok = comp_ctx->curr_token.t;
- if (tok == DUK_TOK_CASE || tok == DUK_TOK_DEFAULT ||
- tok == DUK_TOK_RCURLY) {
- break;
- }
- num_stmts++;
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- }
-
- /* fall-through jump to next code of next case (backpatched) */
- pc_prevstmt = duk__emit_jump_empty(comp_ctx);
-
- /* XXX: would be nice to omit this jump when the jump is not
- * reachable, at least in the obvious cases (such as the case
- * ending with a 'break'.
- *
- * Perhaps duk__parse_stmt() could provide some info on whether
- * the statement is a "dead end"?
- *
- * If implemented, just set pc_prevstmt to -1 when not needed.
- */
- }
-
- DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RCURLY);
- duk__advance(comp_ctx);
-
- /* default case control flow patchup; note that if pc_prevcase < 0
- * (i.e. no case clauses), control enters default case automatically.
- */
- if (pc_default >= 0) {
- /* default case exists: go there if no case matches */
- duk__patch_jump(comp_ctx, pc_prevcase, pc_default);
- } else {
- /* default case does not exist, or no statements present
- * after default case: finish case evaluation
- */
- duk__patch_jump_here(comp_ctx, pc_prevcase);
- }
-
- /* fall-through control flow patchup; note that pc_prevstmt may be
- * < 0 (i.e. no case clauses), in which case this is a no-op.
- */
- duk__patch_jump_here(comp_ctx, pc_prevstmt);
-
- /* continue jump not patched, an INVALID opcode remains there */
- duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */
-
- /* Note: 'fast' breaks will jump to pc_label_site + 1, which will
- * then jump here. The double jump will be eliminated by a
- * peephole pass, resulting in an optimal jump here. The label
- * site jumps will remain in bytecode and will waste code size.
- */
-
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_SWITCH);
-}
-
-DUK_LOCAL void duk__parse_if_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_reg_t temp_reset;
- duk_regconst_t rc_cond;
- duk_int_t pc_jump_false;
-
- DUK_DDD(DUK_DDDPRINT("begin parsing if statement"));
-
- temp_reset = DUK__GETTEMP(comp_ctx);
-
- duk__advance(comp_ctx); /* eat 'if' */
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__emit_if_true_skip(comp_ctx, rc_cond);
- pc_jump_false = duk__emit_jump_empty(comp_ctx); /* jump to end or else part */
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
-
- /* The 'else' ambiguity is resolved by 'else' binding to the innermost
- * construct, so greedy matching is correct here.
- */
-
- if (comp_ctx->curr_token.t == DUK_TOK_ELSE) {
- duk_int_t pc_jump_end;
-
- DUK_DDD(DUK_DDDPRINT("if has else part"));
-
- duk__advance(comp_ctx);
-
- pc_jump_end = duk__emit_jump_empty(comp_ctx); /* jump from true part to end */
- duk__patch_jump_here(comp_ctx, pc_jump_false);
-
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
-
- duk__patch_jump_here(comp_ctx, pc_jump_end);
- } else {
- DUK_DDD(DUK_DDDPRINT("if does not have else part"));
-
- duk__patch_jump_here(comp_ctx, pc_jump_false);
- }
-
- DUK_DDD(DUK_DDDPRINT("end parsing if statement"));
-}
-
-DUK_LOCAL void duk__parse_do_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) {
- duk_regconst_t rc_cond;
- duk_int_t pc_start;
-
- DUK_DDD(DUK_DDDPRINT("begin parsing do statement"));
-
- duk__advance(comp_ctx); /* eat 'do' */
-
- pc_start = duk__get_current_pc(comp_ctx);
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- duk__patch_jump_here(comp_ctx, pc_label_site + 2); /* continue jump */
-
- duk__advance_expect(comp_ctx, DUK_TOK_WHILE);
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__emit_if_false_skip(comp_ctx, rc_cond);
- duk__emit_jump(comp_ctx, pc_start);
- /* no need to reset temps, as we're finished emitting code */
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */
-
- DUK_DDD(DUK_DDDPRINT("end parsing do statement"));
-}
-
-DUK_LOCAL void duk__parse_while_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_int_t pc_label_site) {
- duk_reg_t temp_reset;
- duk_regconst_t rc_cond;
- duk_int_t pc_start;
- duk_int_t pc_jump_false;
-
- DUK_DDD(DUK_DDDPRINT("begin parsing while statement"));
-
- temp_reset = DUK__GETTEMP(comp_ctx);
-
- duk__advance(comp_ctx); /* eat 'while' */
-
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- pc_start = duk__get_current_pc(comp_ctx);
- duk__patch_jump_here(comp_ctx, pc_label_site + 2); /* continue jump */
-
- rc_cond = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__emit_if_true_skip(comp_ctx, rc_cond);
- pc_jump_false = duk__emit_jump_empty(comp_ctx);
- DUK__SETTEMP(comp_ctx, temp_reset);
-
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- duk__emit_jump(comp_ctx, pc_start);
-
- duk__patch_jump_here(comp_ctx, pc_jump_false);
- duk__patch_jump_here(comp_ctx, pc_label_site + 1); /* break jump */
-
- DUK_DDD(DUK_DDDPRINT("end parsing while statement"));
-}
-
-DUK_LOCAL void duk__parse_break_or_continue_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_bool_t is_break = (comp_ctx->curr_token.t == DUK_TOK_BREAK);
- duk_int_t label_id;
- duk_int_t label_catch_depth;
- duk_int_t label_pc; /* points to LABEL; pc+1 = jump site for break; pc+2 = jump site for continue */
- duk_bool_t label_is_closest;
-
- DUK_UNREF(res);
-
- duk__advance(comp_ctx); /* eat 'break' or 'continue' */
-
- if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */
- comp_ctx->curr_token.lineterm || /* automatic semi will be inserted */
- comp_ctx->curr_token.allow_auto_semi) { /* automatic semi will be inserted */
- /* break/continue without label */
-
- duk__lookup_active_label(comp_ctx, DUK_HTHREAD_STRING_EMPTY_STRING(thr), is_break, &label_id, &label_catch_depth, &label_pc, &label_is_closest);
- } else if (comp_ctx->curr_token.t == DUK_TOK_IDENTIFIER) {
- /* break/continue with label (label cannot be a reserved word, production is 'Identifier' */
- DUK_ASSERT(comp_ctx->curr_token.str1 != NULL);
- duk__lookup_active_label(comp_ctx, comp_ctx->curr_token.str1, is_break, &label_id, &label_catch_depth, &label_pc, &label_is_closest);
- duk__advance(comp_ctx);
- } else {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_BREAK_CONT_LABEL);
- }
-
- /* Use a fast break/continue when possible. A fast break/continue is
- * just a jump to the LABEL break/continue jump slot, which then jumps
- * to an appropriate place (for break, going through ENDLABEL correctly).
- * The peephole optimizer will optimize the jump to a direct one.
- */
-
- if (label_catch_depth == comp_ctx->curr_func.catch_depth &&
- label_is_closest) {
- DUK_DDD(DUK_DDDPRINT("break/continue: is_break=%ld, label_id=%ld, label_is_closest=%ld, "
- "label_catch_depth=%ld, catch_depth=%ld "
- "-> use fast variant (direct jump)",
- (long) is_break, (long) label_id, (long) label_is_closest,
- (long) label_catch_depth, (long) comp_ctx->curr_func.catch_depth));
-
- duk__emit_jump(comp_ctx, label_pc + (is_break ? 1 : 2));
- } else {
- DUK_DDD(DUK_DDDPRINT("break/continue: is_break=%ld, label_id=%ld, label_is_closest=%ld, "
- "label_catch_depth=%ld, catch_depth=%ld "
- "-> use slow variant (longjmp)",
- (long) is_break, (long) label_id, (long) label_is_closest,
- (long) label_catch_depth, (long) comp_ctx->curr_func.catch_depth));
-
- duk__emit_extraop_bc(comp_ctx,
- is_break ? DUK_EXTRAOP_BREAK : DUK_EXTRAOP_CONTINUE,
- (duk_regconst_t) label_id);
- }
-}
-
-DUK_LOCAL void duk__parse_return_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_regconst_t rc_val;
- duk_small_uint_t ret_flags;
-
- duk__advance(comp_ctx); /* eat 'return' */
-
- /* A 'return' statement is only allowed inside an actual function body,
- * not as part of eval or global code.
- */
- if (!comp_ctx->curr_func.is_function) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_RETURN);
- }
-
- ret_flags = 0;
-
- if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON || /* explicit semi follows */
- comp_ctx->curr_token.lineterm || /* automatic semi will be inserted */
- comp_ctx->curr_token.allow_auto_semi) { /* automatic semi will be inserted */
- DUK_DDD(DUK_DDDPRINT("empty return value -> undefined"));
- rc_val = 0;
- } else {
- duk_int_t pc_before_expr;
- duk_int_t pc_after_expr;
-
- DUK_DDD(DUK_DDDPRINT("return with a value"));
-
- DUK_UNREF(pc_before_expr);
- DUK_UNREF(pc_after_expr);
-
- pc_before_expr = duk__get_current_pc(comp_ctx);
- rc_val = duk__exprtop_toregconst(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- pc_after_expr = duk__get_current_pc(comp_ctx);
-
- /* Tail call check: if last opcode emitted was CALL(I), and
- * the context allows it, change the CALL(I) to a tail call.
- * This doesn't guarantee that a tail call will be allowed at
- * runtime, so the RETURN must still be emitted. (Duktape
- * 0.10.0 avoided this and simulated a RETURN if a tail call
- * couldn't be used at runtime; but this didn't work
- * correctly with a thread yield/resume, see
- * test-bug-tailcall-thread-yield-resume.js for discussion.)
- *
- * In addition to the last opcode being CALL, we also need to
- * be sure that 'rc_val' is the result register of the CALL(I).
- * For instance, for the expression 'return 0, (function ()
- * { return 1; }), 2' the last opcode emitted is CALL (no
- * bytecode is emitted for '2') but 'rc_val' indicates
- * constant '2'. Similarly if '2' is replaced by a register
- * bound variable, no opcodes are emitted but tail call would
- * be incorrect.
- *
- * This is tricky and easy to get wrong. It would be best to
- * track enough expression metadata to check that 'rc_val' came
- * from that last CALL instruction. We don't have that metadata
- * now, so we check that 'rc_val' is a temporary register result
- * (not a constant or a register bound variable). There should
- * be no way currently for 'rc_val' to be a temporary for an
- * expression following the CALL instruction without emitting
- * some opcodes following the CALL. This proxy check is used
- * below.
- *
- * See: test-bug-comma-expr-gh131.js.
- *
- * The non-standard 'caller' property disables tail calls
- * because they pose some special cases which haven't been
- * fixed yet.
- */
-
-#if defined(DUK_USE_TAILCALL)
- if (comp_ctx->curr_func.catch_depth == 0 && /* no catchers */
- pc_after_expr > pc_before_expr) { /* at least one opcode emitted */
- duk_compiler_instr *instr;
- duk_small_uint_t op;
-
- instr = duk__get_instr_ptr(comp_ctx, pc_after_expr - 1);
- DUK_ASSERT(instr != NULL);
-
- op = (duk_small_uint_t) DUK_DEC_OP(instr->ins);
- if ((op == DUK_OP_CALL || op == DUK_OP_CALLI) &&
- DUK__ISTEMP(comp_ctx, rc_val) /* see above */) {
- DUK_DDD(DUK_DDDPRINT("return statement detected a tail call opportunity: "
- "catch depth is 0, duk__exprtop() emitted >= 1 instructions, "
- "and last instruction is a CALL "
- "-> set TAILCALL flag"));
- /* Just flip the single bit. */
- instr->ins |= DUK_ENC_OP_A_B_C(0, DUK_BC_CALL_FLAG_TAILCALL, 0, 0);
- }
- }
-#endif /* DUK_USE_TAILCALL */
-
- ret_flags = DUK_BC_RETURN_FLAG_HAVE_RETVAL;
- }
-
- duk__emit_a_b(comp_ctx,
- DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) ret_flags /*flags*/,
- rc_val /*reg*/);
-}
-
-DUK_LOCAL void duk__parse_throw_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_reg_t reg_val;
-
- duk__advance(comp_ctx); /* eat 'throw' */
-
- /* Unlike break/continue, throw statement does not allow an empty value. */
-
- if (comp_ctx->curr_token.lineterm) {
- DUK_ERROR_SYNTAX(comp_ctx->thr, DUK_STR_INVALID_THROW);
- }
-
- reg_val = duk__exprtop_toreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_THROW,
- (duk_regconst_t) reg_val);
-}
-
-DUK_LOCAL void duk__parse_try_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_reg_t reg_catch; /* reg_catch+0 and reg_catch+1 are reserved for TRYCATCH */
- duk_regconst_t rc_varname = 0;
- duk_small_uint_t trycatch_flags = 0;
- duk_int_t pc_ldconst = -1;
- duk_int_t pc_trycatch = -1;
- duk_int_t pc_catch = -1;
- duk_int_t pc_finally = -1;
-
- DUK_UNREF(res);
-
- /*
- * See the following documentation for discussion:
- *
- * doc/execution.rst: control flow details
- *
- * Try, catch, and finally "parts" are Blocks, not Statements, so
- * they must always be delimited by curly braces. This is unlike e.g.
- * the if statement, which accepts any Statement. This eliminates any
- * questions of matching parts of nested try statements. The Block
- * parsing is implemented inline here (instead of calling out).
- *
- * Finally part has a 'let scoped' variable, which requires a few kinks
- * here.
- */
-
- comp_ctx->curr_func.catch_depth++;
-
- duk__advance(comp_ctx); /* eat 'try' */
-
- reg_catch = DUK__ALLOCTEMPS(comp_ctx, 2);
-
- /* The target for this LDCONST may need output shuffling, but we assume
- * that 'pc_ldconst' will be the LDCONST that we can patch later. This
- * should be the case because there's no input shuffling. (If there's
- * no catch clause, this LDCONST will be replaced with a NOP.)
- */
- pc_ldconst = duk__get_current_pc(comp_ctx);
- duk__emit_a_bc(comp_ctx, DUK_OP_LDCONST, reg_catch, 0 /*patched later*/);
-
- pc_trycatch = duk__get_current_pc(comp_ctx);
- duk__emit_invalid(comp_ctx); /* TRYCATCH, cannot emit now (not enough info) */
- duk__emit_invalid(comp_ctx); /* jump for 'catch' case */
- duk__emit_invalid(comp_ctx); /* jump for 'finally' case or end (if no finally) */
-
- /* try part */
- duk__advance_expect(comp_ctx, DUK_TOK_LCURLY);
- duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/);
- /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_ENDTRY);
-
- if (comp_ctx->curr_token.t == DUK_TOK_CATCH) {
- /*
- * The catch variable must be updated to reflect the new allocated
- * register for the duration of the catch clause. We need to store
- * and restore the original value for the varmap entry (if any).
- */
-
- /*
- * Note: currently register bindings must be fixed for the entire
- * function. So, even though the catch variable is in a register
- * we know, we must use an explicit environment record and slow path
- * accesses to read/write the catch binding to make closures created
- * within the catch clause work correctly. This restriction should
- * be fixable (at least in common cases) later.
- *
- * See: test-bug-catch-binding-2.js.
- *
- * XXX: improve to get fast path access to most catch clauses.
- */
-
- duk_hstring *h_var;
- duk_int_t varmap_value; /* for storing/restoring the varmap binding for catch variable */
-
- DUK_DDD(DUK_DDDPRINT("stack top at start of catch clause: %ld", (long) duk_get_top(ctx)));
-
- trycatch_flags |= DUK_BC_TRYCATCH_FLAG_HAVE_CATCH;
-
- pc_catch = duk__get_current_pc(comp_ctx);
-
- duk__advance(comp_ctx);
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) {
- /* Identifier, i.e. don't allow reserved words */
- goto syntax_error;
- }
- h_var = comp_ctx->curr_token.str1;
- DUK_ASSERT(h_var != NULL);
-
- duk_push_hstring(ctx, h_var); /* keep in on valstack, use borrowed ref below */
-
- if (comp_ctx->curr_func.is_strict &&
- ((h_var == DUK_HTHREAD_STRING_EVAL(thr)) ||
- (h_var == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr)))) {
- DUK_DDD(DUK_DDDPRINT("catch identifier 'eval' or 'arguments' in strict mode -> SyntaxError"));
- goto syntax_error;
- }
-
- duk_dup_top(ctx);
- rc_varname = duk__getconst(comp_ctx);
- DUK_DDD(DUK_DDDPRINT("catch clause, rc_varname=0x%08lx (%ld)",
- (unsigned long) rc_varname, (long) rc_varname));
-
- duk__advance(comp_ctx);
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- duk__advance_expect(comp_ctx, DUK_TOK_LCURLY);
-
- DUK_DDD(DUK_DDDPRINT("varmap before modifying for catch clause: %!iT",
- (duk_tval *) duk_get_tval(ctx, comp_ctx->curr_func.varmap_idx)));
-
- duk_dup_top(ctx);
- duk_get_prop(ctx, comp_ctx->curr_func.varmap_idx);
- if (duk_is_undefined(ctx, -1)) {
- varmap_value = -2;
- } else if (duk_is_null(ctx, -1)) {
- varmap_value = -1;
- } else {
- DUK_ASSERT(duk_is_number(ctx, -1));
- varmap_value = duk_get_int(ctx, -1);
- DUK_ASSERT(varmap_value >= 0);
- }
- duk_pop(ctx);
-
-#if 0
- /* It'd be nice to do something like this - but it doesn't
- * work for closures created inside the catch clause.
- */
- duk_dup_top(ctx);
- duk_push_int(ctx, (duk_int_t) (reg_catch + 0));
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx);
-#endif
- duk_dup_top(ctx);
- duk_push_null(ctx);
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx);
-
- duk__emit_a_bc(comp_ctx,
- DUK_OP_PUTVAR | DUK__EMIT_FLAG_A_IS_SOURCE,
- (duk_regconst_t) (reg_catch + 0) /*value*/,
- rc_varname /*varname*/);
-
- DUK_DDD(DUK_DDDPRINT("varmap before parsing catch clause: %!iT",
- (duk_tval *) duk_get_tval(ctx, comp_ctx->curr_func.varmap_idx)));
-
- duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/);
- /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */
-
- if (varmap_value == -2) {
- /* not present */
- duk_del_prop(ctx, comp_ctx->curr_func.varmap_idx);
- } else {
- if (varmap_value == -1) {
- duk_push_null(ctx);
- } else {
- DUK_ASSERT(varmap_value >= 0);
- duk_push_int(ctx, varmap_value);
- }
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx);
- }
- /* varname is popped by above code */
-
- DUK_DDD(DUK_DDDPRINT("varmap after restore catch clause: %!iT",
- (duk_tval *) duk_get_tval(ctx, comp_ctx->curr_func.varmap_idx)));
-
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_ENDCATCH);
-
- /*
- * XXX: for now, indicate that an expensive catch binding
- * declarative environment is always needed. If we don't
- * need it, we don't need the const_varname either.
- */
-
- trycatch_flags |= DUK_BC_TRYCATCH_FLAG_CATCH_BINDING;
-
- DUK_DDD(DUK_DDDPRINT("stack top at end of catch clause: %ld", (long) duk_get_top(ctx)));
- }
-
- if (comp_ctx->curr_token.t == DUK_TOK_FINALLY) {
- trycatch_flags |= DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY;
-
- pc_finally = duk__get_current_pc(comp_ctx);
-
- duk__advance(comp_ctx);
-
- duk__advance_expect(comp_ctx, DUK_TOK_LCURLY);
- duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/);
- /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */
- duk__emit_extraop_b(comp_ctx,
- DUK_EXTRAOP_ENDFIN,
- reg_catch); /* rethrow */
- }
-
- if (!(trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) &&
- !(trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY)) {
- /* must have catch and/or finally */
- goto syntax_error;
- }
-
- /* If there's no catch block, rc_varname will be 0 and duk__patch_trycatch()
- * will replace the LDCONST with a NOP. For any actual constant (including
- * constant 0) the DUK__CONST_MARKER flag will be set in rc_varname.
- */
-
- duk__patch_trycatch(comp_ctx,
- pc_ldconst,
- pc_trycatch,
- reg_catch,
- rc_varname,
- trycatch_flags);
-
- if (trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) {
- DUK_ASSERT(pc_catch >= 0);
- duk__patch_jump(comp_ctx, pc_trycatch + 1, pc_catch);
- }
-
- if (trycatch_flags & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY) {
- DUK_ASSERT(pc_finally >= 0);
- duk__patch_jump(comp_ctx, pc_trycatch + 2, pc_finally);
- } else {
- /* without finally, the second jump slot is used to jump to end of stmt */
- duk__patch_jump_here(comp_ctx, pc_trycatch + 2);
- }
-
- comp_ctx->curr_func.catch_depth--;
- return;
-
- syntax_error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_TRY);
-}
-
-DUK_LOCAL void duk__parse_with_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res) {
- duk_int_t pc_trycatch;
- duk_int_t pc_finished;
- duk_reg_t reg_catch;
- duk_small_uint_t trycatch_flags;
-
- if (comp_ctx->curr_func.is_strict) {
- DUK_ERROR_SYNTAX(comp_ctx->thr, DUK_STR_WITH_IN_STRICT_MODE);
- }
-
- comp_ctx->curr_func.catch_depth++;
-
- duk__advance(comp_ctx); /* eat 'with' */
-
- reg_catch = DUK__ALLOCTEMPS(comp_ctx, 2);
-
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
- duk__exprtop_toforcedreg(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/, reg_catch);
- duk__advance_expect(comp_ctx, DUK_TOK_RPAREN);
-
- pc_trycatch = duk__get_current_pc(comp_ctx);
- trycatch_flags = DUK_BC_TRYCATCH_FLAG_WITH_BINDING;
- duk__emit_a_bc(comp_ctx,
- DUK_OP_TRYCATCH | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) trycatch_flags /*a*/,
- (duk_regconst_t) reg_catch /*bc*/);
- duk__emit_invalid(comp_ctx); /* catch jump */
- duk__emit_invalid(comp_ctx); /* finished jump */
-
- duk__parse_stmt(comp_ctx, res, 0 /*allow_source_elem*/);
- duk__emit_extraop_only(comp_ctx,
- DUK_EXTRAOP_ENDTRY);
-
- pc_finished = duk__get_current_pc(comp_ctx);
-
- duk__patch_jump(comp_ctx, pc_trycatch + 2, pc_finished);
-
- comp_ctx->curr_func.catch_depth--;
-}
-
-DUK_LOCAL duk_int_t duk__stmt_label_site(duk_compiler_ctx *comp_ctx, duk_int_t label_id) {
- /* if a site already exists, nop: max one label site per statement */
- if (label_id >= 0) {
- return label_id;
- }
-
- label_id = comp_ctx->curr_func.label_next++;
- DUK_DDD(DUK_DDDPRINT("allocated new label id for label site: %ld", (long) label_id));
-
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_LABEL,
- (duk_regconst_t) label_id);
- duk__emit_invalid(comp_ctx);
- duk__emit_invalid(comp_ctx);
-
- return label_id;
-}
-
-/* Parse a single statement.
- *
- * Creates a label site (with an empty label) automatically for iteration
- * statements. Also "peels off" any label statements for explicit labels.
- */
-DUK_LOCAL void duk__parse_stmt(duk_compiler_ctx *comp_ctx, duk_ivalue *res, duk_bool_t allow_source_elem) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t dir_prol_at_entry; /* directive prologue status at entry */
- duk_reg_t temp_at_entry;
- duk_uarridx_t labels_len_at_entry;
- duk_int_t pc_at_entry; /* assumed to also be PC of "LABEL" */
- duk_int_t stmt_id;
- duk_small_uint_t stmt_flags = 0;
- duk_int_t label_id = -1;
- duk_small_uint_t tok;
-
- DUK__RECURSION_INCREASE(comp_ctx, thr);
-
- temp_at_entry = DUK__GETTEMP(comp_ctx);
- pc_at_entry = duk__get_current_pc(comp_ctx);
- labels_len_at_entry = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.labelnames_idx);
- stmt_id = comp_ctx->curr_func.stmt_next++;
- dir_prol_at_entry = comp_ctx->curr_func.in_directive_prologue;
-
- DUK_UNREF(stmt_id);
-
- DUK_DDD(DUK_DDDPRINT("parsing a statement, stmt_id=%ld, temp_at_entry=%ld, labels_len_at_entry=%ld, "
- "is_strict=%ld, in_directive_prologue=%ld, catch_depth=%ld",
- (long) stmt_id, (long) temp_at_entry, (long) labels_len_at_entry,
- (long) comp_ctx->curr_func.is_strict, (long) comp_ctx->curr_func.in_directive_prologue,
- (long) comp_ctx->curr_func.catch_depth));
-
- /* The directive prologue flag is cleared by default so that it is
- * unset for any recursive statement parsing. It is only "revived"
- * if a directive is detected. (We could also make directives only
- * allowed if 'allow_source_elem' was true.)
- */
- comp_ctx->curr_func.in_directive_prologue = 0;
-
- retry_parse:
-
- DUK_DDD(DUK_DDDPRINT("try stmt parse, stmt_id=%ld, label_id=%ld, allow_source_elem=%ld, catch_depth=%ld",
- (long) stmt_id, (long) label_id, (long) allow_source_elem,
- (long) comp_ctx->curr_func.catch_depth));
-
- /*
- * Detect iteration statements; if encountered, establish an
- * empty label.
- */
-
- tok = comp_ctx->curr_token.t;
- if (tok == DUK_TOK_FOR || tok == DUK_TOK_DO || tok == DUK_TOK_WHILE ||
- tok == DUK_TOK_SWITCH) {
- DUK_DDD(DUK_DDDPRINT("iteration/switch statement -> add empty label"));
-
- label_id = duk__stmt_label_site(comp_ctx, label_id);
- duk__add_label(comp_ctx,
- DUK_HTHREAD_STRING_EMPTY_STRING(thr),
- pc_at_entry /*pc_label*/,
- label_id);
- }
-
- /*
- * Main switch for statement / source element type.
- */
-
- switch (comp_ctx->curr_token.t) {
- case DUK_TOK_FUNCTION: {
- /*
- * Function declaration, function expression, or (non-standard)
- * function statement.
- *
- * The E5 specification only allows function declarations at
- * the top level (in "source elements"). An ExpressionStatement
- * is explicitly not allowed to begin with a "function" keyword
- * (E5 Section 12.4). Hence any non-error semantics for such
- * non-top-level statements are non-standard. Duktape semantics
- * for function statements are modelled after V8, see
- * test-dev-func-decl-outside-top.js.
- */
-
-#if defined(DUK_USE_NONSTD_FUNC_STMT)
- /* Lenient: allow function declarations outside top level in
- * non-strict mode but reject them in strict mode.
- */
- if (allow_source_elem || !comp_ctx->curr_func.is_strict)
-#else /* DUK_USE_NONSTD_FUNC_STMT */
- /* Strict: never allow function declarations outside top level. */
- if (allow_source_elem)
-#endif /* DUK_USE_NONSTD_FUNC_STMT */
- {
- /* FunctionDeclaration: not strictly a statement but handled as such.
- *
- * O(depth^2) parse count for inner functions is handled by recording a
- * lexer offset on the first compilation pass, so that the function can
- * be efficiently skipped on the second pass. This is encapsulated into
- * duk__parse_func_like_fnum().
- */
-
- duk_int_t fnum;
-
- DUK_DDD(DUK_DDDPRINT("function declaration statement"));
-
- duk__advance(comp_ctx); /* eat 'function' */
- fnum = duk__parse_func_like_fnum(comp_ctx, 1 /*is_decl*/, 0 /*is_setget*/);
-
- if (comp_ctx->curr_func.in_scanning) {
- duk_uarridx_t n;
- duk_hstring *h_funcname;
-
- duk_get_prop_index(ctx, comp_ctx->curr_func.funcs_idx, fnum * 3);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_NAME); /* -> [ ... func name ] */
- h_funcname = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_funcname != NULL);
-
- DUK_DDD(DUK_DDDPRINT("register function declaration %!O in pass 1, fnum %ld",
- (duk_heaphdr *) h_funcname, (long) fnum));
- n = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.decls_idx);
- duk_push_hstring(ctx, h_funcname);
- duk_put_prop_index(ctx, comp_ctx->curr_func.decls_idx, n);
- duk_push_int(ctx, (duk_int_t) (DUK_DECL_TYPE_FUNC + (fnum << 8)));
- duk_put_prop_index(ctx, comp_ctx->curr_func.decls_idx, n + 1);
-
- duk_pop_n(ctx, 2);
- }
-
- /* no statement value (unlike function expression) */
- stmt_flags = 0;
- break;
- } else {
- DUK_ERROR_SYNTAX(thr, DUK_STR_FUNC_STMT_NOT_ALLOWED);
- }
- break;
- }
- case DUK_TOK_LCURLY: {
- DUK_DDD(DUK_DDDPRINT("block statement"));
- duk__advance(comp_ctx);
- duk__parse_stmts(comp_ctx, 0 /*allow_source_elem*/, 0 /*expect_eof*/);
- /* the DUK_TOK_RCURLY is eaten by duk__parse_stmts() */
- if (label_id >= 0) {
- duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */
- }
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_CONST: {
- DUK_DDD(DUK_DDDPRINT("constant declaration statement"));
- duk__parse_var_stmt(comp_ctx, res, DUK__EXPR_FLAG_REQUIRE_INIT /*expr_flags*/);
- stmt_flags = DUK__HAS_TERM;
- break;
- }
- case DUK_TOK_VAR: {
- DUK_DDD(DUK_DDDPRINT("variable declaration statement"));
- duk__parse_var_stmt(comp_ctx, res, 0 /*expr_flags*/);
- stmt_flags = DUK__HAS_TERM;
- break;
- }
- case DUK_TOK_SEMICOLON: {
- /* empty statement with an explicit semicolon */
- DUK_DDD(DUK_DDDPRINT("empty statement"));
- stmt_flags = DUK__HAS_TERM;
- break;
- }
- case DUK_TOK_IF: {
- DUK_DDD(DUK_DDDPRINT("if statement"));
- duk__parse_if_stmt(comp_ctx, res);
- if (label_id >= 0) {
- duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */
- }
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_DO: {
- /*
- * Do-while statement is mostly trivial, but there is special
- * handling for automatic semicolon handling (triggered by the
- * DUK__ALLOW_AUTO_SEMI_ALWAYS) flag related to a bug filed at:
- *
- * https://bugs.ecmascript.org/show_bug.cgi?id=8
- *
- * See doc/compiler.rst for details.
- */
- DUK_DDD(DUK_DDDPRINT("do statement"));
- DUK_ASSERT(label_id >= 0);
- duk__update_label_flags(comp_ctx,
- label_id,
- DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE);
- duk__parse_do_stmt(comp_ctx, res, pc_at_entry);
- stmt_flags = DUK__HAS_TERM | DUK__ALLOW_AUTO_SEMI_ALWAYS; /* DUK__ALLOW_AUTO_SEMI_ALWAYS workaround */
- break;
- }
- case DUK_TOK_WHILE: {
- DUK_DDD(DUK_DDDPRINT("while statement"));
- DUK_ASSERT(label_id >= 0);
- duk__update_label_flags(comp_ctx,
- label_id,
- DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE);
- duk__parse_while_stmt(comp_ctx, res, pc_at_entry);
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_FOR: {
- /*
- * For/for-in statement is complicated to parse because
- * determining the statement type (three-part for vs. a
- * for-in) requires potential backtracking.
- *
- * See the helper for the messy stuff.
- */
- DUK_DDD(DUK_DDDPRINT("for/for-in statement"));
- DUK_ASSERT(label_id >= 0);
- duk__update_label_flags(comp_ctx,
- label_id,
- DUK_LABEL_FLAG_ALLOW_BREAK | DUK_LABEL_FLAG_ALLOW_CONTINUE);
- duk__parse_for_stmt(comp_ctx, res, pc_at_entry);
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_CONTINUE:
- case DUK_TOK_BREAK: {
- DUK_DDD(DUK_DDDPRINT("break/continue statement"));
- duk__parse_break_or_continue_stmt(comp_ctx, res);
- stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL;
- break;
- }
- case DUK_TOK_RETURN: {
- DUK_DDD(DUK_DDDPRINT("return statement"));
- duk__parse_return_stmt(comp_ctx, res);
- stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL;
- break;
- }
- case DUK_TOK_WITH: {
- DUK_DDD(DUK_DDDPRINT("with statement"));
- comp_ctx->curr_func.with_depth++;
- duk__parse_with_stmt(comp_ctx, res);
- if (label_id >= 0) {
- duk__patch_jump_here(comp_ctx, pc_at_entry + 1); /* break jump */
- }
- comp_ctx->curr_func.with_depth--;
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_SWITCH: {
- /*
- * The switch statement is pretty messy to compile.
- * See the helper for details.
- */
- DUK_DDD(DUK_DDDPRINT("switch statement"));
- DUK_ASSERT(label_id >= 0);
- duk__update_label_flags(comp_ctx,
- label_id,
- DUK_LABEL_FLAG_ALLOW_BREAK); /* don't allow continue */
- duk__parse_switch_stmt(comp_ctx, res, pc_at_entry);
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_THROW: {
- DUK_DDD(DUK_DDDPRINT("throw statement"));
- duk__parse_throw_stmt(comp_ctx, res);
- stmt_flags = DUK__HAS_TERM | DUK__IS_TERMINAL;
- break;
- }
- case DUK_TOK_TRY: {
- DUK_DDD(DUK_DDDPRINT("try statement"));
- duk__parse_try_stmt(comp_ctx, res);
- stmt_flags = 0;
- break;
- }
- case DUK_TOK_DEBUGGER: {
- duk__advance(comp_ctx);
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- DUK_DDD(DUK_DDDPRINT("debugger statement: debugging enabled, emit debugger opcode"));
- duk__emit_extraop_only(comp_ctx, DUK_EXTRAOP_DEBUGGER);
-#else
- DUK_DDD(DUK_DDDPRINT("debugger statement: ignored"));
-#endif
- stmt_flags = DUK__HAS_TERM;
- break;
- }
- default: {
- /*
- * Else, must be one of:
- * - ExpressionStatement, possibly a directive (String)
- * - LabelledStatement (Identifier followed by ':')
- *
- * Expressions beginning with 'function' keyword are covered by a case
- * above (such expressions are not allowed in standard E5 anyway).
- * Also expressions starting with '{' are interpreted as block
- * statements. See E5 Section 12.4.
- *
- * Directive detection is tricky; see E5 Section 14.1 on directive
- * prologue. A directive is an expression statement with a single
- * string literal and an explicit or automatic semicolon. Escape
- * characters are significant and no parens etc are allowed:
- *
- * 'use strict'; // valid 'use strict' directive
- * 'use\u0020strict'; // valid directive, not a 'use strict' directive
- * ('use strict'); // not a valid directive
- *
- * The expression is determined to consist of a single string literal
- * based on duk__expr_nud() and duk__expr_led() call counts. The string literal
- * of a 'use strict' directive is determined to lack any escapes based
- * num_escapes count from the lexer. Note that other directives may be
- * allowed to contain escapes, so a directive with escapes does not
- * terminate a directive prologue.
- *
- * We rely on the fact that the expression parser will not emit any
- * code for a single token expression. However, it will generate an
- * intermediate value which we will then successfully ignore.
- *
- * A similar approach is used for labels.
- */
-
- duk_bool_t single_token;
-
- DUK_DDD(DUK_DDDPRINT("expression statement"));
- duk__exprtop(comp_ctx, res, DUK__BP_FOR_EXPR /*rbp_flags*/);
-
- single_token = (comp_ctx->curr_func.nud_count == 1 && /* one token */
- comp_ctx->curr_func.led_count == 0); /* no operators */
-
- if (single_token &&
- comp_ctx->prev_token.t == DUK_TOK_IDENTIFIER &&
- comp_ctx->curr_token.t == DUK_TOK_COLON) {
- /*
- * Detected label
- */
-
- duk_hstring *h_lab;
-
- /* expected ival */
- DUK_ASSERT(res->t == DUK_IVAL_VAR);
- DUK_ASSERT(res->x1.t == DUK_ISPEC_VALUE);
- DUK_ASSERT(DUK_TVAL_IS_STRING(duk_get_tval(ctx, res->x1.valstack_idx)));
- h_lab = comp_ctx->prev_token.str1;
- DUK_ASSERT(h_lab != NULL);
-
- DUK_DDD(DUK_DDDPRINT("explicit label site for label '%!O'",
- (duk_heaphdr *) h_lab));
-
- duk__advance(comp_ctx); /* eat colon */
-
- label_id = duk__stmt_label_site(comp_ctx, label_id);
-
- duk__add_label(comp_ctx,
- h_lab,
- pc_at_entry /*pc_label*/,
- label_id);
-
- /* a statement following a label cannot be a source element
- * (a function declaration).
- */
- allow_source_elem = 0;
-
- DUK_DDD(DUK_DDDPRINT("label handled, retry statement parsing"));
- goto retry_parse;
- }
-
- stmt_flags = 0;
-
- if (dir_prol_at_entry && /* still in prologue */
- single_token && /* single string token */
- comp_ctx->prev_token.t == DUK_TOK_STRING) {
- /*
- * Detected a directive
- */
- duk_hstring *h_dir;
-
- /* expected ival */
- DUK_ASSERT(res->t == DUK_IVAL_PLAIN);
- DUK_ASSERT(res->x1.t == DUK_ISPEC_VALUE);
- DUK_ASSERT(DUK_TVAL_IS_STRING(duk_get_tval(ctx, res->x1.valstack_idx)));
- h_dir = comp_ctx->prev_token.str1;
- DUK_ASSERT(h_dir != NULL);
-
- DUK_DDD(DUK_DDDPRINT("potential directive: %!O", h_dir));
-
- stmt_flags |= DUK__STILL_PROLOGUE;
-
- /* Note: escaped characters differentiate directives */
-
- if (comp_ctx->prev_token.num_escapes > 0) {
- DUK_DDD(DUK_DDDPRINT("directive contains escapes: valid directive "
- "but we ignore such directives"));
- } else {
- /*
- * The length comparisons are present to handle
- * strings like "use strict\u0000foo" as required.
- */
-
- if (DUK_HSTRING_GET_BYTELEN(h_dir) == 10 &&
- DUK_STRNCMP((const char *) DUK_HSTRING_GET_DATA(h_dir), "use strict", 10) == 0) {
-#if defined(DUK_USE_STRICT_DECL)
- DUK_DDD(DUK_DDDPRINT("use strict directive detected: strict flag %ld -> %ld",
- (long) comp_ctx->curr_func.is_strict, (long) 1));
- comp_ctx->curr_func.is_strict = 1;
-#else
- DUK_DDD(DUK_DDDPRINT("use strict detected but strict declarations disabled, ignoring"));
-#endif
- } else if (DUK_HSTRING_GET_BYTELEN(h_dir) == 14 &&
- DUK_STRNCMP((const char *) DUK_HSTRING_GET_DATA(h_dir), "use duk notail", 14) == 0) {
- DUK_DDD(DUK_DDDPRINT("use duk notail directive detected: notail flag %ld -> %ld",
- (long) comp_ctx->curr_func.is_notail, (long) 1));
- comp_ctx->curr_func.is_notail = 1;
- } else {
- DUK_DD(DUK_DDPRINT("unknown directive: '%!O', ignoring but not terminating "
- "directive prologue", (duk_hobject *) h_dir));
- }
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("non-directive expression statement or no longer in prologue; "
- "prologue terminated if still active"));
- }
-
- stmt_flags |= DUK__HAS_VAL | DUK__HAS_TERM;
- }
- } /* end switch (tok) */
-
- /*
- * Statement value handling.
- *
- * Global code and eval code has an implicit return value
- * which comes from the last statement with a value
- * (technically a non-"empty" continuation, which is
- * different from an empty statement).
- *
- * Since we don't know whether a later statement will
- * override the value of the current statement, we need
- * to coerce the statement value to a register allocated
- * for implicit return values. In other cases we need
- * to coerce the statement value to a plain value to get
- * any side effects out (consider e.g. "foo.bar;").
- */
-
- /* XXX: what about statements which leave a half-cooked value in 'res'
- * but have no stmt value? Any such statements?
- */
-
- if (stmt_flags & DUK__HAS_VAL) {
- duk_reg_t reg_stmt_value = comp_ctx->curr_func.reg_stmt_value;
- if (reg_stmt_value >= 0) {
- duk__ivalue_toforcedreg(comp_ctx, res, reg_stmt_value);
- } else {
- duk__ivalue_toplain_ignore(comp_ctx, res);
- }
- } else {
- ;
- }
-
- /*
- * Statement terminator check, including automatic semicolon
- * handling. After this step, 'curr_tok' should be the first
- * token after a possible statement terminator.
- */
-
- if (stmt_flags & DUK__HAS_TERM) {
- if (comp_ctx->curr_token.t == DUK_TOK_SEMICOLON) {
- DUK_DDD(DUK_DDDPRINT("explicit semicolon terminates statement"));
- duk__advance(comp_ctx);
- } else {
- if (comp_ctx->curr_token.allow_auto_semi) {
- DUK_DDD(DUK_DDDPRINT("automatic semicolon terminates statement"));
- } else if (stmt_flags & DUK__ALLOW_AUTO_SEMI_ALWAYS) {
- /* XXX: make this lenience dependent on flags or strictness? */
- DUK_DDD(DUK_DDDPRINT("automatic semicolon terminates statement (allowed for compatibility "
- "even though no lineterm present before next token)"));
- } else {
- DUK_ERROR_SYNTAX(thr, DUK_STR_UNTERMINATED_STMT);
- }
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("statement has no terminator"));
- }
-
- /*
- * Directive prologue tracking.
- */
-
- if (stmt_flags & DUK__STILL_PROLOGUE) {
- DUK_DDD(DUK_DDDPRINT("setting in_directive_prologue"));
- comp_ctx->curr_func.in_directive_prologue = 1;
- }
-
- /*
- * Cleanups (all statement parsing flows through here).
- *
- * Pop label site and reset labels. Reset 'next temp' to value at
- * entry to reuse temps.
- */
-
- if (label_id >= 0) {
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_ENDLABEL,
- (duk_regconst_t) label_id);
- }
-
- DUK__SETTEMP(comp_ctx, temp_at_entry);
-
- duk__reset_labels_to_length(comp_ctx, labels_len_at_entry);
-
- /* XXX: return indication of "terminalness" (e.g. a 'throw' is terminal) */
-
- DUK__RECURSION_DECREASE(comp_ctx, thr);
-}
-
-#undef DUK__HAS_VAL
-#undef DUK__HAS_TERM
-#undef DUK__ALLOW_AUTO_SEMI_ALWAYS
-
-/*
- * Parse a statement list.
- *
- * Handles automatic semicolon insertion and implicit return value.
- *
- * Upon entry, 'curr_tok' should contain the first token of the first
- * statement (parsed in the "allow regexp literal" mode). Upon exit,
- * 'curr_tok' contains the token following the statement list terminator
- * (EOF or closing brace).
- */
-
-DUK_LOCAL void duk__parse_stmts(duk_compiler_ctx *comp_ctx, duk_bool_t allow_source_elem, duk_bool_t expect_eof) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_ivalue res_alloc;
- duk_ivalue *res = &res_alloc;
-
- /* Setup state. Initial ivalue is 'undefined'. */
-
- duk_require_stack(ctx, DUK__PARSE_STATEMENTS_SLOTS);
-
- /* XXX: 'res' setup can be moved to function body level; in fact, two 'res'
- * intermediate values suffice for parsing of each function. Nesting is needed
- * for nested functions (which may occur inside expressions).
- */
-
- DUK_MEMZERO(&res_alloc, sizeof(res_alloc));
- res->t = DUK_IVAL_PLAIN;
- res->x1.t = DUK_ISPEC_VALUE;
- res->x1.valstack_idx = duk_get_top(ctx);
- res->x2.valstack_idx = res->x1.valstack_idx + 1;
- duk_push_undefined(ctx);
- duk_push_undefined(ctx);
-
- /* Parse statements until a closing token (EOF or '}') is found. */
-
- for (;;) {
- /* Check whether statement list ends. */
-
- if (expect_eof) {
- if (comp_ctx->curr_token.t == DUK_TOK_EOF) {
- break;
- }
- } else {
- if (comp_ctx->curr_token.t == DUK_TOK_RCURLY) {
- break;
- }
- }
-
- /* Check statement type based on the first token type.
- *
- * Note: expression parsing helpers expect 'curr_tok' to
- * contain the first token of the expression upon entry.
- */
-
- DUK_DDD(DUK_DDDPRINT("TOKEN %ld (non-whitespace, non-comment)", (long) comp_ctx->curr_token.t));
-
- duk__parse_stmt(comp_ctx, res, allow_source_elem);
- }
-
- duk__advance(comp_ctx);
-
- /* Tear down state. */
-
- duk_pop_2(ctx);
-}
-
-/*
- * Declaration binding instantiation conceptually happens when calling a
- * function; for us it essentially means that function prologue. The
- * conceptual process is described in E5 Section 10.5.
- *
- * We need to keep track of all encountered identifiers to (1) create an
- * identifier-to-register map ("varmap"); and (2) detect duplicate
- * declarations. Identifiers which are not bound to registers still need
- * to be tracked for detecting duplicates. Currently such identifiers
- * are put into the varmap with a 'null' value, which is later cleaned up.
- *
- * To support functions with a large number of variable and function
- * declarations, registers are not allocated beyond a certain limit;
- * after that limit, variables and functions need slow path access.
- * Arguments are currently always register bound, which imposes a hard
- * (and relatively small) argument count limit.
- *
- * Some bindings in E5 are not configurable (= deletable) and almost all
- * are mutable (writable). Exceptions are:
- *
- * - The 'arguments' binding, established only if no shadowing argument
- * or function declaration exists. We handle 'arguments' creation
- * and binding through an explicit slow path environment record.
- *
- * - The "name" binding for a named function expression. This is also
- * handled through an explicit slow path environment record.
- */
-
-/* XXX: add support for variables to not be register bound always, to
- * handle cases with a very large number of variables?
- */
-
-DUK_LOCAL void duk__init_varmap_and_prologue_for_pass2(duk_compiler_ctx *comp_ctx, duk_reg_t *out_stmt_value_reg) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *h_name;
- duk_bool_t configurable_bindings;
- duk_uarridx_t num_args;
- duk_uarridx_t num_decls;
- duk_regconst_t rc_name;
- duk_small_uint_t declvar_flags;
- duk_uarridx_t i;
-#ifdef DUK_USE_ASSERTIONS
- duk_idx_t entry_top;
-#endif
-
-#ifdef DUK_USE_ASSERTIONS
- entry_top = duk_get_top(ctx);
-#endif
-
- /*
- * Preliminaries
- */
-
- configurable_bindings = comp_ctx->curr_func.is_eval;
- DUK_DDD(DUK_DDDPRINT("configurable_bindings=%ld", (long) configurable_bindings));
-
- /* varmap is already in comp_ctx->curr_func.varmap_idx */
-
- /*
- * Function formal arguments, always bound to registers
- * (there's no support for shuffling them now).
- */
-
- num_args = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.argnames_idx);
- DUK_DDD(DUK_DDDPRINT("num_args=%ld", (long) num_args));
- /* XXX: check num_args */
-
- for (i = 0; i < num_args; i++) {
- duk_get_prop_index(ctx, comp_ctx->curr_func.argnames_idx, i);
- h_name = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_name != NULL);
-
- if (comp_ctx->curr_func.is_strict) {
- if (duk__hstring_is_eval_or_arguments(comp_ctx, h_name)) {
- DUK_DDD(DUK_DDDPRINT("arg named 'eval' or 'arguments' in strict mode -> SyntaxError"));
- goto error_argname;
- }
- duk_dup_top(ctx);
- if (duk_has_prop(ctx, comp_ctx->curr_func.varmap_idx)) {
- DUK_DDD(DUK_DDDPRINT("duplicate arg name in strict mode -> SyntaxError"));
- goto error_argname;
- }
-
- /* Ensure argument name is not a reserved word in current
- * (final) strictness. Formal argument parsing may not
- * catch reserved names if strictness changes during
- * parsing.
- *
- * We only need to do this in strict mode because non-strict
- * keyword are always detected in formal argument parsing.
- */
-
- if (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(h_name)) {
- goto error_argname;
- }
- }
-
- /* overwrite any previous binding of the same name; the effect is
- * that last argument of a certain name wins.
- */
-
- /* only functions can have arguments */
- DUK_ASSERT(comp_ctx->curr_func.is_function);
- duk_push_uarridx(ctx, i); /* -> [ ... name index ] */
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx); /* -> [ ... ] */
-
- /* no code needs to be emitted, the regs already have values */
- }
-
- /* use temp_next for tracking register allocations */
- DUK__SETTEMP_CHECKMAX(comp_ctx, (duk_reg_t) num_args);
-
- /*
- * After arguments, allocate special registers (like shuffling temps)
- */
-
- if (out_stmt_value_reg) {
- *out_stmt_value_reg = DUK__ALLOCTEMP(comp_ctx);
- }
- if (comp_ctx->curr_func.needs_shuffle) {
- duk_reg_t shuffle_base = DUK__ALLOCTEMPS(comp_ctx, 3);
- comp_ctx->curr_func.shuffle1 = shuffle_base;
- comp_ctx->curr_func.shuffle2 = shuffle_base + 1;
- comp_ctx->curr_func.shuffle3 = shuffle_base + 2;
- DUK_D(DUK_DPRINT("shuffle registers needed by function, allocated: %ld %ld %ld",
- (long) comp_ctx->curr_func.shuffle1,
- (long) comp_ctx->curr_func.shuffle2,
- (long) comp_ctx->curr_func.shuffle3));
- }
- if (comp_ctx->curr_func.temp_next > 0x100) {
- DUK_D(DUK_DPRINT("not enough 8-bit regs: temp_next=%ld", (long) comp_ctx->curr_func.temp_next));
- goto error_outofregs;
- }
-
- /*
- * Function declarations
- */
-
- num_decls = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.decls_idx);
- DUK_DDD(DUK_DDDPRINT("num_decls=%ld -> %!T",
- (long) num_decls,
- (duk_tval *) duk_get_tval(ctx, comp_ctx->curr_func.decls_idx)));
- for (i = 0; i < num_decls; i += 2) {
- duk_int_t decl_type;
- duk_int_t fnum;
-
- duk_get_prop_index(ctx, comp_ctx->curr_func.decls_idx, i + 1); /* decl type */
- decl_type = duk_to_int(ctx, -1);
- fnum = decl_type >> 8; /* XXX: macros */
- decl_type = decl_type & 0xff;
- duk_pop(ctx);
-
- if (decl_type != DUK_DECL_TYPE_FUNC) {
- continue;
- }
-
- duk_get_prop_index(ctx, comp_ctx->curr_func.decls_idx, i); /* decl name */
-
- /* XXX: spilling */
- if (comp_ctx->curr_func.is_function) {
- duk_reg_t reg_bind;
- duk_dup_top(ctx);
- if (duk_has_prop(ctx, comp_ctx->curr_func.varmap_idx)) {
- /* shadowed; update value */
- duk_dup_top(ctx);
- duk_get_prop(ctx, comp_ctx->curr_func.varmap_idx);
- reg_bind = duk_to_int(ctx, -1); /* [ ... name reg_bind ] */
- duk__emit_a_bc(comp_ctx,
- DUK_OP_CLOSURE,
- (duk_regconst_t) reg_bind,
- (duk_regconst_t) fnum);
- } else {
- /* function: always register bound */
- reg_bind = DUK__ALLOCTEMP(comp_ctx);
- duk__emit_a_bc(comp_ctx,
- DUK_OP_CLOSURE,
- (duk_regconst_t) reg_bind,
- (duk_regconst_t) fnum);
- duk_push_int(ctx, (duk_int_t) reg_bind);
- }
- } else {
- /* Function declaration for global/eval code is emitted even
- * for duplicates, because of E5 Section 10.5, step 5.e of
- * E5.1 (special behavior for variable bound to global object).
- *
- * DECLVAR will not re-declare a variable as such, but will
- * update the binding value.
- */
-
- duk_reg_t reg_temp = DUK__ALLOCTEMP(comp_ctx);
- duk_dup_top(ctx);
- rc_name = duk__getconst(comp_ctx);
- duk_push_null(ctx);
-
- duk__emit_a_bc(comp_ctx,
- DUK_OP_CLOSURE,
- (duk_regconst_t) reg_temp,
- (duk_regconst_t) fnum);
-
- declvar_flags = DUK_PROPDESC_FLAG_WRITABLE |
- DUK_PROPDESC_FLAG_ENUMERABLE |
- DUK_BC_DECLVAR_FLAG_FUNC_DECL;
-
- if (configurable_bindings) {
- declvar_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
-
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_DECLVAR | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) declvar_flags /*flags*/,
- rc_name /*name*/,
- (duk_regconst_t) reg_temp /*value*/);
-
- DUK__SETTEMP(comp_ctx, reg_temp); /* forget temp */
- }
-
- DUK_DDD(DUK_DDDPRINT("function declaration to varmap: %!T -> %!T",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx); /* [ ... name reg/null ] -> [ ... ] */
- }
-
- /*
- * 'arguments' binding is special; if a shadowing argument or
- * function declaration exists, an arguments object will
- * definitely not be needed, regardless of whether the identifier
- * 'arguments' is referenced inside the function body.
- */
-
- if (duk_has_prop_stridx(ctx, comp_ctx->curr_func.varmap_idx, DUK_STRIDX_LC_ARGUMENTS)) {
- DUK_DDD(DUK_DDDPRINT("'arguments' is shadowed by argument or function declaration "
- "-> arguments object creation can be skipped"));
- comp_ctx->curr_func.is_arguments_shadowed = 1;
- }
-
- /*
- * Variable declarations.
- *
- * Unlike function declarations, variable declaration values don't get
- * assigned on entry. If a binding of the same name already exists, just
- * ignore it silently.
- */
-
- for (i = 0; i < num_decls; i += 2) {
- duk_int_t decl_type;
-
- duk_get_prop_index(ctx, comp_ctx->curr_func.decls_idx, i + 1); /* decl type */
- decl_type = duk_to_int(ctx, -1);
- decl_type = decl_type & 0xff;
- duk_pop(ctx);
-
- if (decl_type != DUK_DECL_TYPE_VAR) {
- continue;
- }
-
- duk_get_prop_index(ctx, comp_ctx->curr_func.decls_idx, i); /* decl name */
-
- if (duk_has_prop(ctx, comp_ctx->curr_func.varmap_idx)) {
- /* shadowed, ignore */
- } else {
- duk_get_prop_index(ctx, comp_ctx->curr_func.decls_idx, i); /* decl name */
- h_name = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_name != NULL);
-
- if (h_name == DUK_HTHREAD_STRING_LC_ARGUMENTS(thr) &&
- !comp_ctx->curr_func.is_arguments_shadowed) {
- /* E5 Section steps 7-8 */
- DUK_DDD(DUK_DDDPRINT("'arguments' not shadowed by a function declaration, "
- "but appears as a variable declaration -> treat as "
- "a no-op for variable declaration purposes"));
- duk_pop(ctx);
- continue;
- }
-
- /* XXX: spilling */
- if (comp_ctx->curr_func.is_function) {
- duk_reg_t reg_bind = DUK__ALLOCTEMP(comp_ctx);
- /* no need to init reg, it will be undefined on entry */
- duk_push_int(ctx, (duk_int_t) reg_bind);
- } else {
- duk_dup_top(ctx);
- rc_name = duk__getconst(comp_ctx);
- duk_push_null(ctx);
-
- declvar_flags = DUK_PROPDESC_FLAG_WRITABLE |
- DUK_PROPDESC_FLAG_ENUMERABLE |
- DUK_BC_DECLVAR_FLAG_UNDEF_VALUE;
- if (configurable_bindings) {
- declvar_flags |= DUK_PROPDESC_FLAG_CONFIGURABLE;
- }
-
- duk__emit_a_b_c(comp_ctx,
- DUK_OP_DECLVAR | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) declvar_flags /*flags*/,
- rc_name /*name*/,
- (duk_regconst_t) 0 /*value*/);
- }
-
- duk_put_prop(ctx, comp_ctx->curr_func.varmap_idx); /* [ ... name reg/null ] -> [ ... ] */
- }
- }
-
- /*
- * Wrap up
- */
-
- DUK_DDD(DUK_DDDPRINT("varmap: %!T, is_arguments_shadowed=%ld",
- (duk_tval *) duk_get_tval(ctx, comp_ctx->curr_func.varmap_idx),
- (long) comp_ctx->curr_func.is_arguments_shadowed));
-
- DUK_ASSERT_TOP(ctx, entry_top);
- return;
-
- error_outofregs:
- DUK_ERROR_RANGE(thr, DUK_STR_REG_LIMIT);
- DUK_UNREACHABLE();
- return;
-
- error_argname:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_ARG_NAME);
- DUK_UNREACHABLE();
- return;
-}
-
-/*
- * Parse a function-body-like expression (FunctionBody or Program
- * in E5 grammar) using a two-pass parse. The productions appear
- * in the following contexts:
- *
- * - function expression
- * - function statement
- * - function declaration
- * - getter in object literal
- * - setter in object literal
- * - global code
- * - eval code
- * - Function constructor body
- *
- * This function only parses the statement list of the body; the argument
- * list and possible function name must be initialized by the caller.
- * For instance, for Function constructor, the argument names are originally
- * on the value stack. The parsing of statements ends either at an EOF or
- * a closing brace; this is controlled by an input flag.
- *
- * Note that there are many differences affecting parsing and even code
- * generation:
- *
- * - Global and eval code have an implicit return value generated
- * by the last statement; function code does not
- *
- * - Global code, eval code, and Function constructor body end in
- * an EOF, other bodies in a closing brace ('}')
- *
- * Upon entry, 'curr_tok' is ignored and the function will pull in the
- * first token on its own. Upon exit, 'curr_tok' is the terminating
- * token (EOF or closing brace).
- */
-
-DUK_LOCAL void duk__parse_func_body(duk_compiler_ctx *comp_ctx, duk_bool_t expect_eof, duk_bool_t implicit_return_value, duk_small_int_t expect_token) {
- duk_compiler_func *func;
- duk_hthread *thr;
- duk_context *ctx;
- duk_reg_t reg_stmt_value = -1;
- duk_lexer_point lex_pt;
- duk_reg_t temp_first;
- duk_small_int_t compile_round = 1;
-
- DUK_ASSERT(comp_ctx != NULL);
-
- thr = comp_ctx->thr;
- ctx = (duk_context *) thr;
- DUK_ASSERT(thr != NULL);
-
- func = &comp_ctx->curr_func;
- DUK_ASSERT(func != NULL);
-
- DUK__RECURSION_INCREASE(comp_ctx, thr);
-
- duk_require_stack(ctx, DUK__FUNCTION_BODY_REQUIRE_SLOTS);
-
- /*
- * Store lexer position for a later rewind
- */
-
- DUK_LEXER_GETPOINT(&comp_ctx->lex, &lex_pt);
-
- /*
- * Program code (global and eval code) has an implicit return value
- * from the last statement value (e.g. eval("1; 2+3;") returns 3).
- * This is not the case with functions. If implicit statement return
- * value is requested, all statements are coerced to a register
- * allocated here, and used in the implicit return statement below.
- */
-
- /* XXX: this is pointless here because pass 1 is throw-away */
- if (implicit_return_value) {
- reg_stmt_value = DUK__ALLOCTEMP(comp_ctx);
-
- /* If an implicit return value is needed by caller, it must be
- * initialized to 'undefined' because we don't know whether any
- * non-empty (where "empty" is a continuation type, and different
- * from an empty statement) statements will be executed.
- *
- * However, since 1st pass is a throwaway one, no need to emit
- * it here.
- */
-#if 0
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_LDUNDEF,
- 0);
-#endif
- }
-
- /*
- * First pass.
- *
- * Gather variable/function declarations needed for second pass.
- * Code generated is dummy and discarded.
- */
-
- func->in_directive_prologue = 1;
- func->in_scanning = 1;
- func->may_direct_eval = 0;
- func->id_access_arguments = 0;
- func->id_access_slow = 0;
- func->reg_stmt_value = reg_stmt_value;
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- func->min_line = DUK_INT_MAX;
- func->max_line = 0;
-#endif
-
- /* duk__parse_stmts() expects curr_tok to be set; parse in "allow regexp literal" mode with current strictness */
- if (expect_token >= 0) {
- /* Eating a left curly; regexp mode is allowed by left curly
- * based on duk__token_lbp[] automatically.
- */
- DUK_ASSERT(expect_token == DUK_TOK_LCURLY);
- duk__update_lineinfo_currtoken(comp_ctx);
- duk__advance_expect(comp_ctx, expect_token);
- } else {
- /* Need to set curr_token.t because lexing regexp mode depends on current
- * token type. Zero value causes "allow regexp" mode.
- */
- comp_ctx->curr_token.t = 0;
- duk__advance(comp_ctx);
- }
-
- DUK_DDD(DUK_DDDPRINT("begin 1st pass"));
- duk__parse_stmts(comp_ctx,
- 1, /* allow source elements */
- expect_eof); /* expect EOF instead of } */
- DUK_DDD(DUK_DDDPRINT("end 1st pass"));
-
- /*
- * Second (and possibly third) pass.
- *
- * Generate actual code. In most cases the need for shuffle
- * registers is detected during pass 1, but in some corner cases
- * we'll only detect it during pass 2 and a third pass is then
- * needed (see GH-115).
- */
-
- for (;;) {
- duk_bool_t needs_shuffle_before = comp_ctx->curr_func.needs_shuffle;
- compile_round++;
-
- /*
- * Rewind lexer.
- *
- * duk__parse_stmts() expects curr_tok to be set; parse in "allow regexp
- * literal" mode with current strictness.
- *
- * curr_token line number info should be initialized for pass 2 before
- * generating prologue, to ensure prologue bytecode gets nice line numbers.
- */
-
- DUK_DDD(DUK_DDDPRINT("rewind lexer"));
- DUK_LEXER_SETPOINT(&comp_ctx->lex, &lex_pt);
- comp_ctx->curr_token.t = 0; /* this is needed for regexp mode */
- comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */
- duk__advance(comp_ctx);
-
- /*
- * Reset function state and perform register allocation, which creates
- * 'varmap' for second pass. Function prologue for variable declarations,
- * binding value initializations etc is emitted as a by-product.
- *
- * Strict mode restrictions for duplicate and invalid argument
- * names are checked here now that we know whether the function
- * is actually strict. See: test-dev-strict-mode-boundary.js.
- *
- * Inner functions are compiled during pass 1 and are not reset.
- */
-
- duk__reset_func_for_pass2(comp_ctx);
- func->in_directive_prologue = 1;
- func->in_scanning = 0;
-
- /* must be able to emit code, alloc consts, etc. */
-
- duk__init_varmap_and_prologue_for_pass2(comp_ctx,
- (implicit_return_value ? &reg_stmt_value : NULL));
- func->reg_stmt_value = reg_stmt_value;
-
- temp_first = DUK__GETTEMP(comp_ctx);
-
- func->temp_first = temp_first;
- func->temp_next = temp_first;
- func->stmt_next = 0;
- func->label_next = 0;
-
- /* XXX: init or assert catch depth etc -- all values */
- func->id_access_arguments = 0;
- func->id_access_slow = 0;
-
- /*
- * Check function name validity now that we know strictness.
- * This only applies to function declarations and expressions,
- * not setter/getter name.
- *
- * See: test-dev-strict-mode-boundary.js
- */
-
- if (func->is_function && !func->is_setget && func->h_name != NULL) {
- if (func->is_strict) {
- if (duk__hstring_is_eval_or_arguments(comp_ctx, func->h_name)) {
- DUK_DDD(DUK_DDDPRINT("func name is 'eval' or 'arguments' in strict mode"));
- goto error_funcname;
- }
- if (DUK_HSTRING_HAS_STRICT_RESERVED_WORD(func->h_name)) {
- DUK_DDD(DUK_DDDPRINT("func name is a reserved word in strict mode"));
- goto error_funcname;
- }
- } else {
- if (DUK_HSTRING_HAS_RESERVED_WORD(func->h_name) &&
- !DUK_HSTRING_HAS_STRICT_RESERVED_WORD(func->h_name)) {
- DUK_DDD(DUK_DDDPRINT("func name is a reserved word in non-strict mode"));
- goto error_funcname;
- }
- }
- }
-
- /*
- * Second pass parsing.
- */
-
- if (implicit_return_value) {
- /* Default implicit return value. */
- duk__emit_extraop_bc(comp_ctx,
- DUK_EXTRAOP_LDUNDEF,
- 0);
- }
-
- DUK_DDD(DUK_DDDPRINT("begin 2nd pass"));
- duk__parse_stmts(comp_ctx,
- 1, /* allow source elements */
- expect_eof); /* expect EOF instead of } */
- DUK_DDD(DUK_DDDPRINT("end 2nd pass"));
-
- duk__update_lineinfo_currtoken(comp_ctx);
-
- if (needs_shuffle_before == comp_ctx->curr_func.needs_shuffle) {
- /* Shuffle decision not changed. */
- break;
- }
- if (compile_round >= 3) {
- /* Should never happen but avoid infinite loop just in case. */
- DUK_D(DUK_DPRINT("more than 3 compile passes needed, should never happen"));
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- }
- DUK_D(DUK_DPRINT("need additional round to compile function, round now %d", (int) compile_round));
- }
-
- /*
- * Emit a final RETURN.
- *
- * It would be nice to avoid emitting an unnecessary "return" opcode
- * if the current PC is not reachable. However, this cannot be reliably
- * detected; even if the previous instruction is an unconditional jump,
- * there may be a previous jump which jumps to current PC (which is the
- * case for iteration and conditional statements, for instance).
- */
-
- /* XXX: request a "last statement is terminal" from duk__parse_stmt() and duk__parse_stmts();
- * we could avoid the last RETURN if we could ensure there is no way to get here
- * (directly or via a jump)
- */
-
- DUK_ASSERT(comp_ctx->curr_func.catch_depth == 0);
- if (reg_stmt_value >= 0) {
- duk__emit_a_b(comp_ctx,
- DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) DUK_BC_RETURN_FLAG_HAVE_RETVAL /*flags*/,
- (duk_regconst_t) reg_stmt_value /*reg*/);
- } else {
- duk__emit_a_b(comp_ctx,
- DUK_OP_RETURN | DUK__EMIT_FLAG_NO_SHUFFLE_A,
- (duk_regconst_t) 0 /*flags*/,
- (duk_regconst_t) 0 /*reg(ignored)*/);
- }
-
- /*
- * Peephole optimize JUMP chains.
- */
-
- duk__peephole_optimize_bytecode(comp_ctx);
-
- /*
- * comp_ctx->curr_func is now ready to be converted into an actual
- * function template.
- */
-
- DUK__RECURSION_DECREASE(comp_ctx, thr);
- return;
-
- error_funcname:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_FUNC_NAME);
-}
-
-/*
- * Parse a function-like expression:
- *
- * - function expression
- * - function declaration
- * - function statement (non-standard)
- * - setter/getter
- *
- * Adds the function to comp_ctx->curr_func function table and returns the
- * function number.
- *
- * On entry, curr_token points to:
- *
- * - the token after 'function' for function expression/declaration/statement
- * - the token after 'set' or 'get' for setter/getter
- */
-
-/* Parse formals. */
-DUK_LOCAL void duk__parse_func_formals(duk_compiler_ctx *comp_ctx) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t first = 1;
- duk_uarridx_t n;
-
- for (;;) {
- if (comp_ctx->curr_token.t == DUK_TOK_RPAREN) {
- break;
- }
-
- if (first) {
- /* no comma */
- first = 0;
- } else {
- duk__advance_expect(comp_ctx, DUK_TOK_COMMA);
- }
-
- /* Note: when parsing a formal list in non-strict context, e.g.
- * "implements" is parsed as an identifier. When the function is
- * later detected to be strict, the argument list must be rechecked
- * against a larger set of reserved words (that of strict mode).
- * This is handled by duk__parse_func_body(). Here we recognize
- * whatever tokens are considered reserved in current strictness
- * (which is not always enough).
- */
-
- if (comp_ctx->curr_token.t != DUK_TOK_IDENTIFIER) {
- DUK_ERROR_SYNTAX(thr, "expected identifier");
- }
- DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_IDENTIFIER);
- DUK_ASSERT(comp_ctx->curr_token.str1 != NULL);
- DUK_DDD(DUK_DDDPRINT("formal argument: %!O",
- (duk_heaphdr *) comp_ctx->curr_token.str1));
-
- /* XXX: append primitive */
- duk_push_hstring(ctx, comp_ctx->curr_token.str1);
- n = (duk_uarridx_t) duk_get_length(ctx, comp_ctx->curr_func.argnames_idx);
- duk_put_prop_index(ctx, comp_ctx->curr_func.argnames_idx, n);
-
- duk__advance(comp_ctx); /* eat identifier */
- }
-}
-
-/* Parse a function-like expression, assuming that 'comp_ctx->curr_func' is
- * correctly set up. Assumes that curr_token is just after 'function' (or
- * 'set'/'get' etc).
- */
-DUK_LOCAL void duk__parse_func_like_raw(duk_compiler_ctx *comp_ctx, duk_bool_t is_decl, duk_bool_t is_setget) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
-
- DUK_ASSERT(comp_ctx->curr_func.num_formals == 0);
- DUK_ASSERT(comp_ctx->curr_func.is_function == 1);
- DUK_ASSERT(comp_ctx->curr_func.is_eval == 0);
- DUK_ASSERT(comp_ctx->curr_func.is_global == 0);
- DUK_ASSERT(comp_ctx->curr_func.is_setget == is_setget);
- DUK_ASSERT(comp_ctx->curr_func.is_decl == is_decl);
-
- duk__update_lineinfo_currtoken(comp_ctx);
-
- /*
- * Function name (if any)
- *
- * We don't check for prohibited names here, because we don't
- * yet know whether the function will be strict. Function body
- * parsing handles this retroactively.
- *
- * For function expressions and declarations function name must
- * be an Identifer (excludes reserved words). For setter/getter
- * it is a PropertyName which allows reserved words and also
- * strings and numbers (e.g. "{ get 1() { ... } }").
- */
-
- if (is_setget) {
- /* PropertyName -> IdentifierName | StringLiteral | NumericLiteral */
- if (comp_ctx->curr_token.t_nores == DUK_TOK_IDENTIFIER ||
- comp_ctx->curr_token.t == DUK_TOK_STRING) {
- duk_push_hstring(ctx, comp_ctx->curr_token.str1); /* keep in valstack */
- } else if (comp_ctx->curr_token.t == DUK_TOK_NUMBER) {
- duk_push_number(ctx, comp_ctx->curr_token.num);
- duk_to_string(ctx, -1);
- } else {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_GETSET_NAME);
- }
- comp_ctx->curr_func.h_name = duk_get_hstring(ctx, -1); /* borrowed reference */
- DUK_ASSERT(comp_ctx->curr_func.h_name != NULL);
- duk__advance(comp_ctx);
- } else {
- /* Function name is an Identifier (not IdentifierName), but we get
- * the raw name (not recognizing keywords) here and perform the name
- * checks only after pass 1.
- */
- if (comp_ctx->curr_token.t_nores == DUK_TOK_IDENTIFIER) {
- duk_push_hstring(ctx, comp_ctx->curr_token.str1); /* keep in valstack */
- comp_ctx->curr_func.h_name = duk_get_hstring(ctx, -1); /* borrowed reference */
- DUK_ASSERT(comp_ctx->curr_func.h_name != NULL);
- duk__advance(comp_ctx);
- } else {
- /* valstack will be unbalanced, which is OK */
- DUK_ASSERT(!is_setget);
- if (is_decl) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_FUNC_NAME_REQUIRED);
- }
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("function name: %!O",
- (duk_heaphdr *) comp_ctx->curr_func.h_name));
-
- /*
- * Formal argument list
- *
- * We don't check for prohibited names or for duplicate argument
- * names here, becase we don't yet know whether the function will
- * be strict. Function body parsing handles this retroactively.
- */
-
- duk__advance_expect(comp_ctx, DUK_TOK_LPAREN);
-
- duk__parse_func_formals(comp_ctx);
-
- DUK_ASSERT(comp_ctx->curr_token.t == DUK_TOK_RPAREN);
- duk__advance(comp_ctx);
-
- /*
- * Parse function body
- */
-
- duk__parse_func_body(comp_ctx,
- 0, /* expect_eof */
- 0, /* implicit_return_value */
- DUK_TOK_LCURLY); /* expect_token */
-
- /*
- * Convert duk_compiler_func to a function template and add it
- * to the parent function table.
- */
-
- duk__convert_to_func_template(comp_ctx, is_setget /*force_no_namebind*/); /* -> [ ... func ] */
-}
-
-/* Parse an inner function, adding the function template to the current function's
- * function table. Return a function number to be used by the outer function.
- *
- * Avoiding O(depth^2) inner function parsing is handled here. On the first pass,
- * compile and register the function normally into the 'funcs' array, also recording
- * a lexer point (offset/line) to the closing brace of the function. On the second
- * pass, skip the function and return the same 'fnum' as on the first pass by using
- * a running counter.
- *
- * An unfortunate side effect of this is that when parsing the inner function, almost
- * nothing is known of the outer function, i.e. the inner function's scope. We don't
- * need that information at the moment, but it would allow some optimizations if it
- * were used.
- */
-DUK_LOCAL duk_int_t duk__parse_func_like_fnum(duk_compiler_ctx *comp_ctx, duk_bool_t is_decl, duk_bool_t is_setget) {
- duk_hthread *thr = comp_ctx->thr;
- duk_context *ctx = (duk_context *) thr;
- duk_compiler_func old_func;
- duk_idx_t entry_top;
- duk_int_t fnum;
-
- /*
- * On second pass, skip the function.
- */
-
- if (!comp_ctx->curr_func.in_scanning) {
- duk_lexer_point lex_pt;
-
- fnum = comp_ctx->curr_func.fnum_next++;
- duk_get_prop_index(ctx, comp_ctx->curr_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 1));
- lex_pt.offset = duk_to_int(ctx, -1);
- duk_pop(ctx);
- duk_get_prop_index(ctx, comp_ctx->curr_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 2));
- lex_pt.line = duk_to_int(ctx, -1);
- duk_pop(ctx);
-
- DUK_DDD(DUK_DDDPRINT("second pass of an inner func, skip the function, reparse closing brace; lex offset=%ld, line=%ld",
- (long) lex_pt.offset, (long) lex_pt.line));
-
- DUK_LEXER_SETPOINT(&comp_ctx->lex, &lex_pt);
- comp_ctx->curr_token.t = 0; /* this is needed for regexp mode */
- comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */
- duk__advance(comp_ctx);
- duk__advance_expect(comp_ctx, DUK_TOK_RCURLY);
-
- return fnum;
- }
-
- /*
- * On first pass, perform actual parsing. Remember valstack top on entry
- * to restore it later, and switch to using a new function in comp_ctx.
- */
-
- entry_top = duk_get_top(ctx);
- DUK_DDD(DUK_DDDPRINT("before func: entry_top=%ld, curr_tok.start_offset=%ld",
- (long) entry_top, (long) comp_ctx->curr_token.start_offset));
-
- DUK_MEMCPY(&old_func, &comp_ctx->curr_func, sizeof(duk_compiler_func));
-
- DUK_MEMZERO(&comp_ctx->curr_func, sizeof(duk_compiler_func));
- duk__init_func_valstack_slots(comp_ctx);
- DUK_ASSERT(comp_ctx->curr_func.num_formals == 0);
-
- /* inherit initial strictness from parent */
- comp_ctx->curr_func.is_strict = old_func.is_strict;
-
- DUK_ASSERT(comp_ctx->curr_func.is_notail == 0);
- comp_ctx->curr_func.is_function = 1;
- DUK_ASSERT(comp_ctx->curr_func.is_eval == 0);
- DUK_ASSERT(comp_ctx->curr_func.is_global == 0);
- comp_ctx->curr_func.is_setget = is_setget;
- comp_ctx->curr_func.is_decl = is_decl;
-
- /*
- * Parse inner function
- */
-
- duk__parse_func_like_raw(comp_ctx, is_decl, is_setget); /* pushes function template */
-
- /* prev_token.start_offset points to the closing brace here; when skipping
- * we're going to reparse the closing brace to ensure semicolon insertion
- * etc work as expected.
- */
- DUK_DDD(DUK_DDDPRINT("after func: prev_tok.start_offset=%ld, curr_tok.start_offset=%ld",
- (long) comp_ctx->prev_token.start_offset, (long) comp_ctx->curr_token.start_offset));
- DUK_ASSERT(comp_ctx->lex.input[comp_ctx->prev_token.start_offset] == (duk_uint8_t) DUK_ASC_RCURLY);
-
- /* XXX: append primitive */
- DUK_ASSERT(duk_get_length(ctx, old_func.funcs_idx) == (duk_size_t) (old_func.fnum_next * 3));
- fnum = old_func.fnum_next++;
-
- if (fnum > DUK__MAX_FUNCS) {
- DUK_ERROR_RANGE(comp_ctx->thr, DUK_STR_FUNC_LIMIT);
- }
-
- /* array writes autoincrement length */
- (void) duk_put_prop_index(ctx, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3));
- duk_push_size_t(ctx, comp_ctx->prev_token.start_offset);
- (void) duk_put_prop_index(ctx, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 1));
- duk_push_int(ctx, comp_ctx->prev_token.start_line);
- (void) duk_put_prop_index(ctx, old_func.funcs_idx, (duk_uarridx_t) (fnum * 3 + 2));
-
- /*
- * Cleanup: restore original function, restore valstack state.
- */
-
- DUK_MEMCPY((void *) &comp_ctx->curr_func, (void *) &old_func, sizeof(duk_compiler_func));
- duk_set_top(ctx, entry_top);
-
- DUK_ASSERT_TOP(ctx, entry_top);
-
- return fnum;
-}
-
-/*
- * Compile input string into an executable function template without
- * arguments.
- *
- * The string is parsed as the "Program" production of Ecmascript E5.
- * Compilation context can be either global code or eval code (see E5
- * Sections 14 and 15.1.2.1).
- *
- * Input stack: [ ... filename ]
- * Output stack: [ ... func_template ]
- */
-
-/* XXX: source code property */
-
-DUK_LOCAL duk_ret_t duk__js_compile_raw(duk_context *ctx) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk_hstring *h_filename;
- duk__compiler_stkstate *comp_stk;
- duk_compiler_ctx *comp_ctx;
- duk_lexer_point *lex_pt;
- duk_compiler_func *func;
- duk_idx_t entry_top;
- duk_bool_t is_strict;
- duk_bool_t is_eval;
- duk_bool_t is_funcexpr;
- duk_small_uint_t flags;
-
- DUK_ASSERT(thr != NULL);
-
- /*
- * Arguments check
- */
-
- entry_top = duk_get_top(ctx);
- DUK_ASSERT(entry_top >= 2);
-
- comp_stk = (duk__compiler_stkstate *) duk_require_pointer(ctx, -1);
- comp_ctx = &comp_stk->comp_ctx_alloc;
- lex_pt = &comp_stk->lex_pt_alloc;
- DUK_ASSERT(comp_ctx != NULL);
- DUK_ASSERT(lex_pt != NULL);
-
- flags = comp_stk->flags;
- is_eval = (flags & DUK_JS_COMPILE_FLAG_EVAL ? 1 : 0);
- is_strict = (flags & DUK_JS_COMPILE_FLAG_STRICT ? 1 : 0);
- is_funcexpr = (flags & DUK_JS_COMPILE_FLAG_FUNCEXPR ? 1 : 0);
-
- h_filename = duk_get_hstring(ctx, -2); /* may be undefined */
-
- /*
- * Init compiler and lexer contexts
- */
-
- func = &comp_ctx->curr_func;
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- comp_ctx->thr = NULL;
- comp_ctx->h_filename = NULL;
- comp_ctx->prev_token.str1 = NULL;
- comp_ctx->prev_token.str2 = NULL;
- comp_ctx->curr_token.str1 = NULL;
- comp_ctx->curr_token.str2 = NULL;
-#endif
-
- duk_require_stack(ctx, DUK__COMPILE_ENTRY_SLOTS);
-
- duk_push_dynamic_buffer(ctx, 0); /* entry_top + 0 */
- duk_push_undefined(ctx); /* entry_top + 1 */
- duk_push_undefined(ctx); /* entry_top + 2 */
- duk_push_undefined(ctx); /* entry_top + 3 */
- duk_push_undefined(ctx); /* entry_top + 4 */
-
- comp_ctx->thr = thr;
- comp_ctx->h_filename = h_filename;
- comp_ctx->tok11_idx = entry_top + 1;
- comp_ctx->tok12_idx = entry_top + 2;
- comp_ctx->tok21_idx = entry_top + 3;
- comp_ctx->tok22_idx = entry_top + 4;
- comp_ctx->recursion_limit = DUK_USE_COMPILER_RECLIMIT;
-
- /* comp_ctx->lex has been pre-initialized by caller: it has been
- * zeroed and input/input_length has been set.
- */
- comp_ctx->lex.thr = thr;
- /* comp_ctx->lex.input and comp_ctx->lex.input_length filled by caller */
- comp_ctx->lex.slot1_idx = comp_ctx->tok11_idx;
- comp_ctx->lex.slot2_idx = comp_ctx->tok12_idx;
- comp_ctx->lex.buf_idx = entry_top + 0;
- comp_ctx->lex.buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, entry_top + 0);
- DUK_ASSERT(comp_ctx->lex.buf != NULL);
- DUK_ASSERT(DUK_HBUFFER_HAS_DYNAMIC(comp_ctx->lex.buf) && !DUK_HBUFFER_HAS_EXTERNAL(comp_ctx->lex.buf));
- comp_ctx->lex.token_limit = DUK_COMPILER_TOKEN_LIMIT;
-
- lex_pt->offset = 0;
- lex_pt->line = 1;
- DUK_LEXER_SETPOINT(&comp_ctx->lex, lex_pt); /* fills window */
- comp_ctx->curr_token.start_line = 0; /* needed for line number tracking (becomes prev_token.start_line) */
-
- /*
- * Initialize function state for a zero-argument function
- */
-
- duk__init_func_valstack_slots(comp_ctx);
- DUK_ASSERT(func->num_formals == 0);
-
- if (is_funcexpr) {
- /* Name will be filled from function expression, not by caller.
- * This case is used by Function constructor and duk_compile()
- * API with the DUK_COMPILE_FUNCTION option.
- */
- DUK_ASSERT(func->h_name == NULL);
- } else {
- duk_push_hstring_stridx(ctx, (is_eval ? DUK_STRIDX_EVAL :
- DUK_STRIDX_GLOBAL));
- func->h_name = duk_get_hstring(ctx, -1);
- }
-
- /*
- * Parse a function body or a function-like expression, depending
- * on flags.
- */
-
- func->is_strict = is_strict;
- func->is_setget = 0;
- func->is_decl = 0;
-
- if (is_funcexpr) {
- func->is_function = 1;
- func->is_eval = 0;
- func->is_global = 0;
-
- duk__advance(comp_ctx); /* init 'curr_token' */
- duk__advance_expect(comp_ctx, DUK_TOK_FUNCTION);
- (void) duk__parse_func_like_raw(comp_ctx,
- 0, /* is_decl */
- 0); /* is_setget */
- } else {
- func->is_function = 0;
- func->is_eval = is_eval;
- func->is_global = !is_eval;
-
- duk__parse_func_body(comp_ctx,
- 1, /* expect_eof */
- 1, /* implicit_return_value */
- -1); /* expect_token */
- }
-
- /*
- * Convert duk_compiler_func to a function template
- */
-
- duk__convert_to_func_template(comp_ctx, 0 /*force_no_namebind*/);
-
- /*
- * Wrapping duk_safe_call() will mangle the stack, just return stack top
- */
-
- /* [ ... filename (temps) func ] */
-
- return 1;
-}
-
-DUK_INTERNAL void duk_js_compile(duk_hthread *thr, const duk_uint8_t *src_buffer, duk_size_t src_length, duk_small_uint_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk__compiler_stkstate comp_stk;
- duk_compiler_ctx *prev_ctx;
- duk_ret_t safe_rc;
-
- /* XXX: this illustrates that a C catchpoint implemented using duk_safe_call()
- * is a bit heavy at the moment. The wrapper compiles to ~180 bytes on x64.
- * Alternatives would be nice.
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(src_buffer != NULL);
-
- /* preinitialize lexer state partially */
- DUK_MEMZERO(&comp_stk, sizeof(comp_stk));
- comp_stk.flags = flags;
- DUK_LEXER_INITCTX(&comp_stk.comp_ctx_alloc.lex);
- comp_stk.comp_ctx_alloc.lex.input = src_buffer;
- comp_stk.comp_ctx_alloc.lex.input_length = src_length;
-
- duk_push_pointer(ctx, (void *) &comp_stk);
-
- /* [ ... filename &comp_stk ] */
-
- prev_ctx = thr->compile_ctx;
- thr->compile_ctx = &comp_stk.comp_ctx_alloc; /* for duk_error_augment.c */
- safe_rc = duk_safe_call(ctx, duk__js_compile_raw, 2 /*nargs*/, 1 /*nret*/);
- thr->compile_ctx = prev_ctx; /* must restore reliably before returning */
-
- if (safe_rc != DUK_EXEC_SUCCESS) {
- duk_throw(ctx);
- }
-
- /* [ ... template ] */
-}
-#line 1 "duk_js_executor.c"
-/*
- * Ecmascript bytecode executor.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Local declarations.
- */
-
-DUK_LOCAL_DECL void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top);
-
-/*
- * Arithmetic, binary, and logical helpers.
- *
- * Note: there is no opcode for logical AND or logical OR; this is on
- * purpose, because the evalution order semantics for them make such
- * opcodes pretty pointless: short circuiting means they are most
- * comfortably implemented as jumps. However, a logical NOT opcode
- * is useful.
- *
- * Note: careful with duk_tval pointers here: they are potentially
- * invalidated by any DECREF and almost any API call. It's still
- * preferable to work without making a copy but that's not always
- * possible.
- */
-
-DUK_LOCAL duk_double_t duk__compute_mod(duk_double_t d1, duk_double_t d2) {
- /*
- * Ecmascript modulus ('%') does not match IEEE 754 "remainder"
- * operation (implemented by remainder() in C99) but does seem
- * to match ANSI C fmod().
- *
- * Compare E5 Section 11.5.3 and "man fmod".
- */
-
- return (duk_double_t) DUK_FMOD((double) d1, (double) d2);
-}
-
-DUK_LOCAL void duk__vm_arith_add(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_fast_t idx_z) {
- /*
- * Addition operator is different from other arithmetic
- * operations in that it also provides string concatenation.
- * Hence it is implemented separately.
- *
- * There is a fast path for number addition. Other cases go
- * through potentially multiple coercions as described in the
- * E5 specification. It may be possible to reduce the number
- * of coercions, but this must be done carefully to preserve
- * the exact semantics.
- *
- * E5 Section 11.6.1.
- *
- * Custom types also have special behavior implemented here.
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_double_union du;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv_x != NULL); /* may be reg or const */
- DUK_ASSERT(tv_y != NULL); /* may be reg or const */
- DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */
- DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(ctx));
-
- /*
- * Fast paths
- */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
- duk_int64_t v1, v2, v3;
- duk_int32_t v3_hi;
- duk_tval *tv_z;
-
- /* Input values are signed 48-bit so we can detect overflow
- * reliably from high bits or just a comparison.
- */
-
- v1 = DUK_TVAL_GET_FASTINT(tv_x);
- v2 = DUK_TVAL_GET_FASTINT(tv_y);
- v3 = v1 + v2;
- v3_hi = (duk_int32_t) (v3 >> 32);
- if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) {
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */
- return;
- } else {
- /* overflow, fall through */
- ;
- }
- }
-#endif /* DUK_USE_FASTINT */
-
- if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
- duk_tval *tv_z;
-
- du.d = DUK_TVAL_GET_NUMBER(tv_x) + DUK_TVAL_GET_NUMBER(tv_y);
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
-
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */
- return;
- }
-
- /*
- * Slow path: potentially requires function calls for coercion
- */
-
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- duk_to_primitive(ctx, -2, DUK_HINT_NONE); /* side effects -> don't use tv_x, tv_y after */
- duk_to_primitive(ctx, -1, DUK_HINT_NONE);
-
- /* As a first approximation, buffer values are coerced to strings
- * for addition. This means that adding two buffers currently
- * results in a string.
- */
- if (duk_check_type_mask(ctx, -2, DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_BUFFER) ||
- duk_check_type_mask(ctx, -1, DUK_TYPE_MASK_STRING | DUK_TYPE_MASK_BUFFER)) {
- duk_to_string(ctx, -2);
- duk_to_string(ctx, -1);
- duk_concat(ctx, 2); /* [... s1 s2] -> [... s1+s2] */
- duk_replace(ctx, (duk_idx_t) idx_z); /* side effects */
- } else {
- duk_double_t d1, d2;
-
- d1 = duk_to_number(ctx, -2);
- d2 = duk_to_number(ctx, -1);
- DUK_ASSERT(duk_is_number(ctx, -2));
- DUK_ASSERT(duk_is_number(ctx, -1));
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d1);
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2);
-
- du.d = d1 + d2;
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
-
- duk_pop_2(ctx);
- duk_push_number(ctx, du.d);
- duk_replace(ctx, (duk_idx_t) idx_z); /* side effects */
- }
-}
-
-DUK_LOCAL void duk__vm_arith_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_idx_t idx_z, duk_small_uint_fast_t opcode) {
- /*
- * Arithmetic operations other than '+' have number-only semantics
- * and are implemented here. The separate switch-case here means a
- * "double dispatch" of the arithmetic opcode, but saves code space.
- *
- * E5 Sections 11.5, 11.5.1, 11.5.2, 11.5.3, 11.6, 11.6.1, 11.6.2, 11.6.3.
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_z;
- duk_double_t d1, d2;
- duk_double_union du;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv_x != NULL); /* may be reg or const */
- DUK_ASSERT(tv_y != NULL); /* may be reg or const */
- DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */
- DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(ctx));
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
- duk_int64_t v1, v2, v3;
- duk_int32_t v3_hi;
-
- v1 = DUK_TVAL_GET_FASTINT(tv_x);
- v2 = DUK_TVAL_GET_FASTINT(tv_y);
-
- switch (opcode) {
- case DUK_OP_SUB: {
- v3 = v1 - v2;
- break;
- }
- case DUK_OP_MUL: {
- /* Must ensure result is 64-bit (no overflow); a
- * simple and sufficient fast path is to allow only
- * 32-bit inputs. Avoid zero inputs to avoid
- * negative zero issues (-1 * 0 = -0, for instance).
- */
- if (v1 >= -0x80000000LL && v1 <= 0x7fffffffLL && v1 != 0 &&
- v2 >= -0x80000000LL && v2 <= 0x7fffffffLL && v2 != 0) {
- v3 = v1 * v2;
- } else {
- goto skip_fastint;
- }
- break;
- }
- case DUK_OP_DIV: {
- /* Don't allow a zero divisor. Fast path check by
- * "verifying" with multiplication. Also avoid zero
- * dividend to avoid negative zero issues (0 / -1 = -0
- * for instance).
- */
- if (v1 == 0 || v2 == 0) {
- goto skip_fastint;
- }
- v3 = v1 / v2;
- if (v3 * v2 != v1) {
- goto skip_fastint;
- }
- break;
- }
- case DUK_OP_MOD: {
- /* Don't allow a zero divisor. Restrict both v1 and
- * v2 to positive values to avoid compiler specific
- * behavior.
- */
- if (v1 < 1 || v2 < 1) {
- goto skip_fastint;
- }
- v3 = v1 % v2;
- DUK_ASSERT(v3 >= 0);
- DUK_ASSERT(v3 < v2);
- DUK_ASSERT(v1 - (v1 / v2) * v2 == v3);
- break;
- }
- default: {
- DUK_UNREACHABLE();
- goto skip_fastint;
- }
- }
-
- v3_hi = (duk_int32_t) (v3 >> 32);
- if (DUK_LIKELY(v3_hi >= -0x8000LL && v3_hi <= 0x7fffLL)) {
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, v3); /* side effects */
- return;
- }
- /* fall through if overflow etc */
- }
- skip_fastint:
-#endif /* DUK_USE_FASTINT */
-
- if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
- /* fast path */
- d1 = DUK_TVAL_GET_NUMBER(tv_x);
- d2 = DUK_TVAL_GET_NUMBER(tv_y);
- } else {
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- d1 = duk_to_number(ctx, -2); /* side effects */
- d2 = duk_to_number(ctx, -1);
- DUK_ASSERT(duk_is_number(ctx, -2));
- DUK_ASSERT(duk_is_number(ctx, -1));
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d1);
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2);
- duk_pop_2(ctx);
- }
-
- switch (opcode) {
- case DUK_OP_SUB: {
- du.d = d1 - d2;
- break;
- }
- case DUK_OP_MUL: {
- du.d = d1 * d2;
- break;
- }
- case DUK_OP_DIV: {
- du.d = d1 / d2;
- break;
- }
- case DUK_OP_MOD: {
- du.d = duk__compute_mod(d1, d2);
- break;
- }
- default: {
- DUK_UNREACHABLE();
- du.d = DUK_DOUBLE_NAN; /* should not happen */
- break;
- }
- }
-
- /* important to use normalized NaN with 8-byte tagged types */
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du);
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
-
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, du.d); /* side effects */
-}
-
-DUK_LOCAL void duk__vm_bitwise_binary_op(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_uint_fast_t idx_z, duk_small_uint_fast_t opcode) {
- /*
- * Binary bitwise operations use different coercions (ToInt32, ToUint32)
- * depending on the operation. We coerce the arguments first using
- * ToInt32(), and then cast to an 32-bit value if necessary. Note that
- * such casts must be correct even if there is no native 32-bit type
- * (e.g., duk_int32_t and duk_uint32_t are 64-bit).
- *
- * E5 Sections 11.10, 11.7.1, 11.7.2, 11.7.3
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_z;
- duk_int32_t i1, i2, i3;
- duk_uint32_t u1, u2, u3;
-#if defined(DUK_USE_FASTINT)
- duk_int64_t fi3;
-#else
- duk_double_t d3;
-#endif
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv_x != NULL); /* may be reg or const */
- DUK_ASSERT(tv_y != NULL); /* may be reg or const */
- DUK_ASSERT_DISABLE(idx_z >= 0); /* unsigned */
- DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(ctx));
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
- i1 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv_x);
- i2 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv_y);
- }
- else
-#endif /* DUK_USE_FASTINT */
- {
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- i1 = duk_to_int32(ctx, -2);
- i2 = duk_to_int32(ctx, -1);
- duk_pop_2(ctx);
- }
-
- switch (opcode) {
- case DUK_OP_BAND: {
- i3 = i1 & i2;
- break;
- }
- case DUK_OP_BOR: {
- i3 = i1 | i2;
- break;
- }
- case DUK_OP_BXOR: {
- i3 = i1 ^ i2;
- break;
- }
- case DUK_OP_BASL: {
- /* Signed shift, named "arithmetic" (asl) because the result
- * is signed, e.g. 4294967295 << 1 -> -2. Note that result
- * must be masked.
- */
-
- u2 = ((duk_uint32_t) i2) & 0xffffffffUL;
- i3 = i1 << (u2 & 0x1f); /* E5 Section 11.7.1, steps 7 and 8 */
- i3 = i3 & ((duk_int32_t) 0xffffffffUL); /* Note: left shift, should mask */
- break;
- }
- case DUK_OP_BASR: {
- /* signed shift */
-
- u2 = ((duk_uint32_t) i2) & 0xffffffffUL;
- i3 = i1 >> (u2 & 0x1f); /* E5 Section 11.7.2, steps 7 and 8 */
- break;
- }
- case DUK_OP_BLSR: {
- /* unsigned shift */
-
- u1 = ((duk_uint32_t) i1) & 0xffffffffUL;
- u2 = ((duk_uint32_t) i2) & 0xffffffffUL;
-
- /* special result value handling */
- u3 = u1 >> (u2 & 0x1f); /* E5 Section 11.7.2, steps 7 and 8 */
-#if defined(DUK_USE_FASTINT)
- fi3 = (duk_int64_t) u3;
- goto fastint_result_set;
-#else
- d3 = (duk_double_t) u3;
- goto result_set;
-#endif
- }
- default: {
- DUK_UNREACHABLE();
- i3 = 0; /* should not happen */
- break;
- }
- }
-
-#if defined(DUK_USE_FASTINT)
- /* Result is always fastint compatible. */
- /* XXX: Set 32-bit result (but must then handle signed and
- * unsigned results separately).
- */
- fi3 = (duk_int64_t) i3;
-
- fastint_result_set:
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_FASTINT_UPDREF(thr, tv_z, fi3); /* side effects */
-#else
- d3 = (duk_double_t) i3;
-
- result_set:
- DUK_ASSERT(!DUK_ISNAN(d3)); /* 'd3' is never NaN, so no need to normalize */
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d3); /* always normalized */
-
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d3); /* side effects */
-#endif
-}
-
-/* In-place unary operation. */
-DUK_LOCAL void duk__vm_arith_unary_op(duk_hthread *thr, duk_tval *tv_x, duk_idx_t idx_x, duk_small_uint_fast_t opcode) {
- /*
- * Arithmetic operations other than '+' have number-only semantics
- * and are implemented here. The separate switch-case here means a
- * "double dispatch" of the arithmetic opcode, but saves code space.
- *
- * E5 Sections 11.5, 11.5.1, 11.5.2, 11.5.3, 11.6, 11.6.1, 11.6.2, 11.6.3.
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_double_t d1;
- duk_double_union du;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(opcode == DUK_EXTRAOP_UNM || opcode == DUK_EXTRAOP_UNP);
- DUK_ASSERT(tv_x != NULL);
- DUK_ASSERT(idx_x >= 0);
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x)) {
- duk_int64_t v1, v2;
-
- v1 = DUK_TVAL_GET_FASTINT(tv_x);
- if (opcode == DUK_EXTRAOP_UNM) {
- /* The smallest fastint is no longer 48-bit when
- * negated. Positive zero becames negative zero
- * (cannot be represented) when negated.
- */
- if (DUK_LIKELY(v1 != DUK_FASTINT_MIN && v1 != 0)) {
- v2 = -v1;
- DUK_TVAL_SET_FASTINT(tv_x, v2); /* no refcount changes */
- return;
- }
- } else {
- /* ToNumber() for a fastint is a no-op. */
- DUK_ASSERT(opcode == DUK_EXTRAOP_UNP);
- return;
- }
- /* fall through if overflow etc */
- }
-#endif /* DUK_USE_FASTINT */
-
- if (!DUK_TVAL_IS_NUMBER(tv_x)) {
- duk_to_number(ctx, idx_x); /* side effects, perform in-place */
- tv_x = DUK_GET_TVAL_POSIDX(ctx, idx_x);
- DUK_ASSERT(tv_x != NULL);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
- }
-
- d1 = DUK_TVAL_GET_NUMBER(tv_x);
- if (opcode == DUK_EXTRAOP_UNM) {
- du.d = -d1;
- } else {
- /* ToNumber() for a double is a no-op. */
- DUK_ASSERT(opcode == DUK_EXTRAOP_UNP);
- du.d = d1;
- }
- DUK_DBLUNION_NORMALIZE_NAN_CHECK(&du); /* mandatory if du.d is a NaN */
-
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
-
-#if defined(DUK_USE_FASTINT)
- /* Unary plus is used to force a fastint check, so must include
- * downgrade check.
- */
- DUK_TVAL_SET_NUMBER_CHKFAST(tv_x, du.d); /* no refcount changes */
-#else
- DUK_TVAL_SET_NUMBER(tv_x, du.d); /* no refcount changes */
-#endif
-}
-
-DUK_LOCAL void duk__vm_bitwise_not(duk_hthread *thr, duk_tval *tv_x, duk_uint_fast_t idx_z) {
- /*
- * E5 Section 11.4.8
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_z;
- duk_int32_t i1, i2;
-#if !defined(DUK_USE_FASTINT)
- duk_double_t d2;
-#endif
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(tv_x != NULL); /* may be reg or const */
- DUK_ASSERT_DISABLE(idx_z >= 0);
- DUK_ASSERT((duk_uint_t) idx_z < (duk_uint_t) duk_get_top(ctx));
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x)) {
- i1 = (duk_int32_t) DUK_TVAL_GET_FASTINT_I32(tv_x);
- }
- else
-#endif /* DUK_USE_FASTINT */
- {
- duk_push_tval(ctx, tv_x);
- i1 = duk_to_int32(ctx, -1);
- duk_pop(ctx);
- }
-
- i2 = ~i1;
-
-#if defined(DUK_USE_FASTINT)
- /* Result is always fastint compatible. */
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv_z, i2); /* side effects */
-#else
- d2 = (duk_double_t) i2;
-
- DUK_ASSERT(!DUK_ISNAN(d2)); /* 'val' is never NaN, so no need to normalize */
- DUK_ASSERT_DOUBLE_IS_NORMALIZED(d2); /* always normalized */
-
- tv_z = thr->valstack_bottom + idx_z;
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv_z, d2); /* side effects */
-#endif
-}
-
-DUK_LOCAL void duk__vm_logical_not(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_z) {
- /*
- * E5 Section 11.4.9
- */
-
- duk_bool_t res;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv_x != NULL); /* may be reg or const */
- DUK_ASSERT(tv_z != NULL); /* reg */
-
- DUK_UNREF(thr); /* w/o refcounts */
-
- /* ToBoolean() does not require any operations with side effects so
- * we can do it efficiently. For footprint it would be better to use
- * duk_js_toboolean() and then push+replace to the result slot.
- */
- res = duk_js_toboolean(tv_x); /* does not modify tv_x */
- DUK_ASSERT(res == 0 || res == 1);
- res ^= 1;
- DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv_z, res); /* side effects */
-}
-
-/*
- * Longjmp and other control flow transfer for the bytecode executor.
- *
- * The longjmp handler can handle all longjmp types: error, yield, and
- * resume (pseudotypes are never actually thrown).
- *
- * Error policy for longjmp: should not ordinarily throw errors; if errors
- * occur (e.g. due to out-of-memory) they bubble outwards rather than being
- * handled recursively.
- */
-
-#define DUK__LONGJMP_RESTART 0 /* state updated, restart bytecode execution */
-#define DUK__LONGJMP_RETHROW 1 /* exit bytecode executor by rethrowing an error to caller */
-
-#define DUK__RETHAND_RESTART 0 /* state updated, restart bytecode execution */
-#define DUK__RETHAND_FINISHED 1 /* exit bytecode execution with return value */
-
-/* XXX: optimize reconfig valstack operations so that resize, clamp, and setting
- * top are combined into one pass.
- */
-
-/* Reconfigure value stack for return to an Ecmascript function at 'act_idx'. */
-DUK_LOCAL void duk__reconfig_valstack_ecma_return(duk_hthread *thr, duk_size_t act_idx) {
- duk_activation *act;
- duk_hcompiledfunction *h_func;
- duk_idx_t clamp_top;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + act_idx) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx)));
- DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */
-
- /* Clamp so that values at 'clamp_top' and above are wiped and won't
- * retain reachable garbage. Then extend to 'nregs' because we're
- * returning to an Ecmascript function.
- */
-
- act = thr->callstack + act_idx;
- h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
-
- thr->valstack_bottom = thr->valstack + act->idx_bottom;
- DUK_ASSERT(act->idx_retval >= act->idx_bottom);
- clamp_top = (duk_idx_t) (act->idx_retval - act->idx_bottom + 1); /* +1 = one retval */
- duk_set_top((duk_context *) thr, clamp_top);
- act = NULL;
-
- (void) duk_valstack_resize_raw((duk_context *) thr,
- (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
- h_func->nregs + /* reg count */
- DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
- 0 /* no compact */ |
- DUK_VSRESIZE_FLAG_THROW);
-
- duk_set_top((duk_context *) thr, h_func->nregs);
-}
-
-DUK_LOCAL void duk__reconfig_valstack_ecma_catcher(duk_hthread *thr, duk_size_t act_idx, duk_size_t cat_idx) {
- duk_activation *act;
- duk_catcher *cat;
- duk_hcompiledfunction *h_func;
- duk_idx_t clamp_top;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT_DISABLE(act_idx >= 0); /* unsigned */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + act_idx) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + act_idx)));
- DUK_ASSERT_DISABLE(thr->callstack[act_idx].idx_retval >= 0); /* unsigned */
-
- act = thr->callstack + act_idx;
- cat = thr->catchstack + cat_idx;
- h_func = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
-
- thr->valstack_bottom = thr->valstack + act->idx_bottom;
- DUK_ASSERT(cat->idx_base >= act->idx_bottom);
- clamp_top = (duk_idx_t) (cat->idx_base - act->idx_bottom + 2); /* +2 = catcher value, catcher lj_type */
- duk_set_top((duk_context *) thr, clamp_top);
- act = NULL;
- cat = NULL;
-
- (void) duk_valstack_resize_raw((duk_context *) thr,
- (thr->valstack_bottom - thr->valstack) + /* bottom of current func */
- h_func->nregs + /* reg count */
- DUK_VALSTACK_INTERNAL_EXTRA, /* + spare */
- DUK_VSRESIZE_FLAG_SHRINK | /* flags */
- 0 /* no compact */ |
- DUK_VSRESIZE_FLAG_THROW);
-
- duk_set_top((duk_context *) thr, h_func->nregs);
-}
-
-/* Set catcher regs: idx_base+0 = value, idx_base+1 = lj_type. */
-DUK_LOCAL void duk__set_catcher_regs(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
- duk_tval *tv1;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv_val_unstable != NULL);
-
- tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base;
- DUK_ASSERT(tv1 < thr->valstack_top);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */
-
- tv1 = thr->valstack + thr->catchstack[cat_idx].idx_base + 1;
- DUK_ASSERT(tv1 < thr->valstack_top);
-
- DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) lj_type); /* side effects */
-}
-
-DUK_LOCAL void duk__handle_catch(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
- duk_context *ctx;
- duk_activation *act;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv_val_unstable != NULL);
- ctx = (duk_context *) thr;
-
- duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type);
-
- duk_hthread_catchstack_unwind(thr, cat_idx + 1);
- duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1);
-
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
-
- duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx);
-
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
- act->curr_pc = thr->catchstack[cat_idx].pc_base + 0; /* +0 = catch */
- act = NULL;
-
- /*
- * If entering a 'catch' block which requires an automatic
- * catch variable binding, create the lexical environment.
- *
- * The binding is mutable (= writable) but not deletable.
- * Step 4 for the catch production in E5 Section 12.14;
- * no value is given for CreateMutableBinding 'D' argument,
- * which implies the binding is not deletable.
- */
-
- if (DUK_CAT_HAS_CATCH_BINDING_ENABLED(&thr->catchstack[cat_idx])) {
- duk_hobject *new_env;
- duk_hobject *act_lex_env;
-
- DUK_DDD(DUK_DDDPRINT("catcher has an automatic catch binding"));
-
- /* Note: 'act' is dangerous here because it may get invalidate at many
- * points, so we re-lookup it multiple times.
- */
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
-
- if (act->lex_env == NULL) {
- DUK_ASSERT(act->var_env == NULL);
- DUK_DDD(DUK_DDDPRINT("delayed environment initialization"));
-
- /* this may have side effects, so re-lookup act */
- duk_js_init_activation_environment_records_delayed(thr, act);
- act = thr->callstack + thr->callstack_top - 1;
- }
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
- DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL);
- DUK_UNREF(act); /* unreferenced without assertions */
-
- act = thr->callstack + thr->callstack_top - 1;
- act_lex_env = act->lex_env;
- act = NULL; /* invalidated */
-
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
- act_lex_env);
- new_env = DUK_GET_HOBJECT_NEGIDX(ctx, -1);
- DUK_ASSERT(new_env != NULL);
- DUK_DDD(DUK_DDDPRINT("new_env allocated: %!iO", (duk_heaphdr *) new_env));
-
- /* Note: currently the catch binding is handled without a register
- * binding because we don't support dynamic register bindings (they
- * must be fixed for an entire function). So, there is no need to
- * record regbases etc.
- */
-
- DUK_ASSERT(thr->catchstack[cat_idx].h_varname != NULL);
- duk_push_hstring(ctx, thr->catchstack[cat_idx].h_varname);
- duk_push_tval(ctx, thr->valstack + thr->catchstack[cat_idx].idx_base);
- duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_W); /* writable, not configurable */
-
- act = thr->callstack + thr->callstack_top - 1;
- act->lex_env = new_env;
- DUK_HOBJECT_INCREF(thr, new_env); /* reachable through activation */
-
- DUK_CAT_SET_LEXENV_ACTIVE(&thr->catchstack[cat_idx]);
-
- duk_pop(ctx);
-
- DUK_DDD(DUK_DDDPRINT("new_env finished: %!iO", (duk_heaphdr *) new_env));
- }
-
- DUK_CAT_CLEAR_CATCH_ENABLED(&thr->catchstack[cat_idx]);
-}
-
-DUK_LOCAL void duk__handle_finally(duk_hthread *thr, duk_size_t cat_idx, duk_tval *tv_val_unstable, duk_small_uint_t lj_type) {
- duk_activation *act;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv_val_unstable != NULL);
-
- duk__set_catcher_regs(thr, cat_idx, tv_val_unstable, lj_type);
-
- duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* cat_idx catcher is kept, even for finally */
- duk_hthread_callstack_unwind(thr, thr->catchstack[cat_idx].callstack_index + 1);
-
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
-
- duk__reconfig_valstack_ecma_catcher(thr, thr->callstack_top - 1, cat_idx);
-
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
- act->curr_pc = thr->catchstack[cat_idx].pc_base + 1; /* +1 = finally */
- act = NULL;
-
- DUK_CAT_CLEAR_FINALLY_ENABLED(&thr->catchstack[cat_idx]);
-}
-
-DUK_LOCAL void duk__handle_label(duk_hthread *thr, duk_size_t cat_idx, duk_small_uint_t lj_type) {
- duk_activation *act;
-
- DUK_ASSERT(thr != NULL);
-
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
-
- DUK_ASSERT(DUK_ACT_GET_FUNC(act) != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(act)));
-
- /* +0 = break, +1 = continue */
- act->curr_pc = thr->catchstack[cat_idx].pc_base + (lj_type == DUK_LJ_TYPE_CONTINUE ? 1 : 0);
- act = NULL; /* invalidated */
-
- duk_hthread_catchstack_unwind(thr, cat_idx + 1); /* keep label catcher */
- /* no need to unwind callstack */
-
- /* valstack should not need changes */
-#if defined(DUK_USE_ASSERTIONS)
- DUK_ASSERT(thr->callstack_top >= 1);
- act = thr->callstack + thr->callstack_top - 1;
- DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack_bottom) ==
- (duk_size_t) ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act))->nregs);
-#endif
-}
-
-/* Called for handling both a longjmp() with type DUK_LJ_TYPE_YIELD and
- * when a RETURN opcode terminates a thread and yields to the resumer.
- */
-DUK_LOCAL void duk__handle_yield(duk_hthread *thr, duk_hthread *resumer, duk_size_t act_idx, duk_tval *tv_val_unstable) {
- duk_tval *tv1;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(resumer != NULL);
- DUK_ASSERT(tv_val_unstable != NULL);
- DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack + act_idx) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(resumer->callstack + act_idx))); /* resume caller must be an ecmascript func */
-
- tv1 = resumer->valstack + resumer->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.resume() */
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv_val_unstable); /* side effects */
-
- duk_hthread_callstack_unwind(resumer, act_idx + 1); /* unwind to 'resume' caller */
-
- /* no need to unwind catchstack */
- duk__reconfig_valstack_ecma_return(resumer, act_idx);
-
- /* caller must change active thread, and set thr->resumer to NULL */
-}
-
-DUK_LOCAL
-duk_small_uint_t duk__handle_longjmp(duk_hthread *thr,
- duk_hthread *entry_thread,
- duk_size_t entry_callstack_top) {
- duk_size_t entry_callstack_index;
- duk_small_uint_t retval = DUK__LONGJMP_RESTART;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(entry_thread != NULL);
- DUK_ASSERT(entry_callstack_top > 0); /* guarantees entry_callstack_top - 1 >= 0 */
-
- entry_callstack_index = entry_callstack_top - 1;
-
- /* 'thr' is the current thread, as no-one resumes except us and we
- * switch 'thr' in that case.
- */
- DUK_ASSERT(thr == thr->heap->curr_thread);
-
- /*
- * (Re)try handling the longjmp.
- *
- * A longjmp handler may convert the longjmp to a different type and
- * "virtually" rethrow by goto'ing to 'check_longjmp'. Before the goto,
- * the following must be updated:
- * - the heap 'lj' state
- * - 'thr' must reflect the "throwing" thread
- */
-
- check_longjmp:
-
- DUK_DD(DUK_DDPRINT("handling longjmp: type=%ld, value1=%!T, value2=%!T, iserror=%ld",
- (long) thr->heap->lj.type,
- (duk_tval *) &thr->heap->lj.value1,
- (duk_tval *) &thr->heap->lj.value2,
- (long) thr->heap->lj.iserror));
-
- switch (thr->heap->lj.type) {
-
- case DUK_LJ_TYPE_RESUME: {
- /*
- * Note: lj.value1 is 'value', lj.value2 is 'resumee'.
- * This differs from YIELD.
- */
-
- duk_tval *tv;
- duk_tval *tv2;
- duk_size_t act_idx;
- duk_hthread *resumee;
-
- /* duk_bi_duk_object_yield() and duk_bi_duk_object_resume() ensure all of these are met */
-
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); /* unchanged by Duktape.Thread.resume() */
- DUK_ASSERT(thr->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))->func == duk_bi_thread_resume);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE((thr->callstack + thr->callstack_top - 2)->idx_retval >= 0); /* unsigned */
-
- tv = &thr->heap->lj.value2; /* resumee */
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_TVAL_GET_OBJECT(tv) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_THREAD(DUK_TVAL_GET_OBJECT(tv)));
- resumee = (duk_hthread *) DUK_TVAL_GET_OBJECT(tv);
-
- DUK_ASSERT(resumee != NULL);
- DUK_ASSERT(resumee->resumer == NULL);
- DUK_ASSERT(resumee->state == DUK_HTHREAD_STATE_INACTIVE ||
- resumee->state == DUK_HTHREAD_STATE_YIELDED); /* checked by Duktape.Thread.resume() */
- DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_YIELDED ||
- resumee->callstack_top >= 2); /* YIELDED: Ecmascript activation + Duktape.Thread.yield() activation */
- DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_YIELDED ||
- (DUK_ACT_GET_FUNC(resumee->callstack + resumee->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(resumee->callstack + resumee->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(resumee->callstack + resumee->callstack_top - 1))->func == duk_bi_thread_yield));
- DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_YIELDED ||
- (DUK_ACT_GET_FUNC(resumee->callstack + resumee->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(resumee->callstack + resumee->callstack_top - 2)))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE(resumee->state != DUK_HTHREAD_STATE_YIELDED ||
- (resumee->callstack + resumee->callstack_top - 2)->idx_retval >= 0); /* idx_retval unsigned */
- DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_INACTIVE ||
- resumee->callstack_top == 0); /* INACTIVE: no activation, single function value on valstack */
- DUK_ASSERT(resumee->state != DUK_HTHREAD_STATE_INACTIVE ||
- (resumee->valstack_top == resumee->valstack + 1 &&
- DUK_TVAL_IS_OBJECT(resumee->valstack_top - 1) &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_TVAL_GET_OBJECT(resumee->valstack_top - 1))));
-
- if (thr->heap->lj.iserror) {
- /*
- * Throw the error in the resumed thread's context; the
- * error value is pushed onto the resumee valstack.
- *
- * Note: the callstack of the target may empty in this case
- * too (i.e. the target thread has never been resumed). The
- * value stack will contain the initial function in that case,
- * which we simply ignore.
- */
-
- resumee->resumer = thr;
- resumee->state = DUK_HTHREAD_STATE_RUNNING;
- thr->state = DUK_HTHREAD_STATE_RESUMED;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumee);
- thr = resumee;
-
- thr->heap->lj.type = DUK_LJ_TYPE_THROW;
-
- /* thr->heap->lj.value1 is already the value to throw */
- /* thr->heap->lj.value2 is 'thread', will be wiped out at the end */
-
- DUK_ASSERT(thr->heap->lj.iserror); /* already set */
-
- DUK_DD(DUK_DDPRINT("-> resume with an error, converted to a throw in the resumee, propagate"));
- goto check_longjmp;
- } else if (resumee->state == DUK_HTHREAD_STATE_YIELDED) {
- act_idx = resumee->callstack_top - 2; /* Ecmascript function */
- DUK_ASSERT_DISABLE(resumee->callstack[act_idx].idx_retval >= 0); /* unsigned */
-
- tv = resumee->valstack + resumee->callstack[act_idx].idx_retval; /* return value from Duktape.Thread.yield() */
- DUK_ASSERT(tv >= resumee->valstack && tv < resumee->valstack_top);
- tv2 = &thr->heap->lj.value1;
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv, tv2); /* side effects */
-
- duk_hthread_callstack_unwind(resumee, act_idx + 1); /* unwind to 'yield' caller */
-
- /* no need to unwind catchstack */
-
- duk__reconfig_valstack_ecma_return(resumee, act_idx);
-
- resumee->resumer = thr;
- resumee->state = DUK_HTHREAD_STATE_RUNNING;
- thr->state = DUK_HTHREAD_STATE_RESUMED;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumee);
-#if 0
- thr = resumee; /* not needed, as we exit right away */
-#endif
- DUK_DD(DUK_DDPRINT("-> resume with a value, restart execution in resumee"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- } else {
- duk_small_uint_t call_flags;
- duk_bool_t setup_rc;
-
- /* resumee: [... initial_func] (currently actually: [initial_func]) */
-
- duk_push_undefined((duk_context *) resumee);
- tv = &thr->heap->lj.value1;
- duk_push_tval((duk_context *) resumee, tv);
-
- /* resumee: [... initial_func undefined(= this) resume_value ] */
-
- call_flags = DUK_CALL_FLAG_IS_RESUME; /* is resume, not a tail call */
-
- setup_rc = duk_handle_ecma_call_setup(resumee,
- 1, /* num_stack_args */
- call_flags); /* call_flags */
- if (setup_rc == 0) {
- /* Shouldn't happen but check anyway. */
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- }
-
- resumee->resumer = thr;
- resumee->state = DUK_HTHREAD_STATE_RUNNING;
- thr->state = DUK_HTHREAD_STATE_RESUMED;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumee);
-#if 0
- thr = resumee; /* not needed, as we exit right away */
-#endif
- DUK_DD(DUK_DDPRINT("-> resume with a value, restart execution in resumee"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
- DUK_UNREACHABLE();
- break; /* never here */
- }
-
- case DUK_LJ_TYPE_YIELD: {
- /*
- * Currently only allowed only if yielding thread has only
- * Ecmascript activations (except for the Duktape.Thread.yield()
- * call at the callstack top) and none of them constructor
- * calls.
- *
- * This excludes the 'entry' thread which will always have
- * a preventcount > 0.
- */
-
- duk_hthread *resumer;
-
- /* duk_bi_duk_object_yield() and duk_bi_duk_object_resume() ensure all of these are met */
-
- DUK_ASSERT(thr != entry_thread); /* Duktape.Thread.yield() should prevent */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING); /* unchanged from Duktape.Thread.yield() */
- DUK_ASSERT(thr->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.yield() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1))->func == duk_bi_thread_yield);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE((thr->callstack + thr->callstack_top - 2)->idx_retval >= 0); /* unsigned */
-
- resumer = thr->resumer;
-
- DUK_ASSERT(resumer != NULL);
- DUK_ASSERT(resumer->state == DUK_HTHREAD_STATE_RESUMED); /* written by a previous RESUME handling */
- DUK_ASSERT(resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack + resumer->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(resumer->callstack + resumer->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(resumer->callstack + resumer->callstack_top - 1))->func == duk_bi_thread_resume);
- DUK_ASSERT(DUK_ACT_GET_FUNC(resumer->callstack + resumer->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(resumer->callstack + resumer->callstack_top - 2))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE((resumer->callstack + resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */
-
- if (thr->heap->lj.iserror) {
- thr->state = DUK_HTHREAD_STATE_YIELDED;
- thr->resumer = NULL;
- resumer->state = DUK_HTHREAD_STATE_RUNNING;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
- thr = resumer;
-
- thr->heap->lj.type = DUK_LJ_TYPE_THROW;
- /* lj.value1 is already set */
- DUK_ASSERT(thr->heap->lj.iserror); /* already set */
-
- DUK_DD(DUK_DDPRINT("-> yield an error, converted to a throw in the resumer, propagate"));
- goto check_longjmp;
- } else {
- duk__handle_yield(thr, resumer, resumer->callstack_top - 2, &thr->heap->lj.value1);
-
- thr->state = DUK_HTHREAD_STATE_YIELDED;
- thr->resumer = NULL;
- resumer->state = DUK_HTHREAD_STATE_RUNNING;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
-#if 0
- thr = resumer; /* not needed, as we exit right away */
-#endif
-
- DUK_DD(DUK_DDPRINT("-> yield a value, restart execution in resumer"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
- DUK_UNREACHABLE();
- break; /* never here */
- }
-
- case DUK_LJ_TYPE_THROW: {
- /*
- * Three possible outcomes:
- * * A try or finally catcher is found => resume there.
- * (or)
- * * The error propagates to the bytecode executor entry
- * level (and we're in the entry thread) => rethrow
- * with a new longjmp(), after restoring the previous
- * catchpoint.
- * * The error is not caught in the current thread, so
- * the thread finishes with an error. This works like
- * a yielded error, except that the thread is finished
- * and can no longer be resumed. (There is always a
- * resumer in this case.)
- *
- * Note: until we hit the entry level, there can only be
- * Ecmascript activations.
- */
-
- duk_catcher *cat;
- duk_hthread *resumer;
-
- cat = thr->catchstack + thr->catchstack_top - 1;
- while (cat >= thr->catchstack) {
- if (thr == entry_thread &&
- cat->callstack_index < entry_callstack_index) {
- /* entry level reached */
- break;
- }
-
- if (DUK_CAT_HAS_CATCH_ENABLED(cat)) {
- DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF);
-
- duk__handle_catch(thr,
- cat - thr->catchstack,
- &thr->heap->lj.value1,
- DUK_LJ_TYPE_THROW);
-
- DUK_DD(DUK_DDPRINT("-> throw caught by a 'catch' clause, restart execution"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
-
- if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF);
- DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat));
-
- duk__handle_finally(thr,
- cat - thr->catchstack,
- &thr->heap->lj.value1,
- DUK_LJ_TYPE_THROW);
-
- DUK_DD(DUK_DDPRINT("-> throw caught by a 'finally' clause, restart execution"));
- retval = DUK__LONGJMP_RESTART;
- goto wipe_and_return;
- }
-
- cat--;
- }
-
- if (thr == entry_thread) {
- /* not caught by anything before entry level; rethrow and let the
- * final catcher unwind everything
- */
-#if 0
- duk_hthread_catchstack_unwind(thr, (cat - thr->catchstack) + 1); /* leave 'cat' as top catcher (also works if catchstack exhausted) */
- duk_hthread_callstack_unwind(thr, entry_callstack_index + 1);
-
-#endif
- DUK_D(DUK_DPRINT("-> throw propagated up to entry level, rethrow and exit bytecode executor"));
- retval = DUK__LONGJMP_RETHROW;
- goto just_return;
- /* Note: MUST NOT wipe_and_return here, as heap->lj must remain intact */
- }
-
- DUK_DD(DUK_DDPRINT("-> throw not caught by current thread, yield error to resumer and recheck longjmp"));
-
- /* not caught by current thread, thread terminates (yield error to resumer);
- * note that this may cause a cascade if the resumer terminates with an uncaught
- * exception etc (this is OK, but needs careful testing)
- */
-
- DUK_ASSERT(thr->resumer != NULL);
- DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */
-
- resumer = thr->resumer;
-
- /* reset longjmp */
-
- DUK_ASSERT(thr->heap->lj.type == DUK_LJ_TYPE_THROW); /* already set */
- /* lj.value1 already set */
-
- duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED);
-
- thr->resumer = NULL;
- resumer->state = DUK_HTHREAD_STATE_RUNNING;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
- thr = resumer;
- goto check_longjmp;
- }
-
- case DUK_LJ_TYPE_BREAK: /* pseudotypes, not used in actual longjmps */
- case DUK_LJ_TYPE_CONTINUE:
- case DUK_LJ_TYPE_RETURN:
- case DUK_LJ_TYPE_NORMAL:
- default: {
- /* should never happen, but be robust */
- DUK_D(DUK_DPRINT("caught unknown longjmp type %ld, treat as internal error", (long) thr->heap->lj.type));
- goto convert_to_internal_error;
- }
-
- } /* end switch */
-
- DUK_UNREACHABLE();
-
- wipe_and_return:
- /* this is not strictly necessary, but helps debugging */
- thr->heap->lj.type = DUK_LJ_TYPE_UNKNOWN;
- thr->heap->lj.iserror = 0;
-
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value1); /* side effects */
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, &thr->heap->lj.value2); /* side effects */
-
- just_return:
- return retval;
-
- convert_to_internal_error:
- /* This could also be thrown internally (set the error, goto check_longjmp),
- * but it's better for internal errors to bubble outwards so that we won't
- * infinite loop in this catchpoint.
- */
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- DUK_UNREACHABLE();
- return retval;
-}
-
-/* Handle a BREAK/CONTINUE opcode. Avoid using longjmp() for BREAK/CONTINUE
- * handling because it has a measurable performance impact in ordinary
- * environments and an extreme impact in Emscripten (GH-342).
- */
-DUK_LOCAL void duk__handle_break_or_continue(duk_hthread *thr,
- duk_uint_t label_id,
- duk_small_uint_t lj_type) {
- duk_catcher *cat;
- duk_size_t orig_callstack_index;
-
- DUK_ASSERT(thr != NULL);
-
- /*
- * Find a matching label catcher or 'finally' catcher in
- * the same function.
- *
- * A label catcher must always exist and will match unless
- * a 'finally' captures the break/continue first. It is the
- * compiler's responsibility to ensure that labels are used
- * correctly.
- */
-
- /* Note: thr->catchstack_top may be 0, so that cat < thr->catchstack
- * initially. This is OK and intended.
- */
- cat = thr->catchstack + thr->catchstack_top - 1;
- DUK_ASSERT(thr->callstack_top > 0);
- orig_callstack_index = thr->callstack_top - 1;
-
- DUK_DDD(DUK_DDDPRINT("handling break/continue with label=%ld, callstack index=%ld",
- (long) label_id, (long) cat->callstack_index));
-
- while (cat >= thr->catchstack) {
- if (cat->callstack_index != orig_callstack_index) {
- break;
- }
- DUK_DDD(DUK_DDDPRINT("considering catcher %ld: type=%ld label=%ld",
- (long) (cat - thr->catchstack),
- (long) DUK_CAT_GET_TYPE(cat),
- (long) DUK_CAT_GET_LABEL(cat)));
-
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
- DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- duk_size_t cat_idx;
- duk_tval tv_tmp;
-
- cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */
-
- DUK_TVAL_SET_FASTINT_U32(&tv_tmp, (duk_uint32_t) label_id);
- duk__handle_finally(thr, cat_idx, &tv_tmp, lj_type);
-
- DUK_DD(DUK_DDPRINT("-> break/continue caught by 'finally', restart execution"));
- return;
- }
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL &&
- (duk_uint_t) DUK_CAT_GET_LABEL(cat) == label_id) {
- duk_size_t cat_idx;
-
- cat_idx = (duk_size_t) (cat - thr->catchstack);
- duk__handle_label(thr, cat_idx, lj_type);
-
- DUK_DD(DUK_DDPRINT("-> break/continue caught by a label catcher (in the same function), restart execution"));
- return;
- }
- cat--;
- }
-
- /* should never happen, but be robust */
- DUK_D(DUK_DPRINT("-> break/continue not caught by anything in the current function (should never happen), throw internal error"));
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return;
-}
-
-/* Handle a RETURN opcode. Avoid using longjmp() for return handling because
- * it has a measurable performance impact in ordinary environments and an extreme
- * impact in Emscripten (GH-342). Return value is on value stack top.
- */
-DUK_LOCAL duk_small_uint_t duk__handle_return(duk_hthread *thr,
- duk_hthread *entry_thread,
- duk_size_t entry_callstack_top) {
- duk_tval *tv1;
- duk_tval *tv2;
- duk_hthread *resumer;
- duk_catcher *cat;
- duk_size_t new_cat_top;
- duk_size_t orig_callstack_index;
-
- /* We can directly access value stack here. */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(entry_thread != NULL);
- DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
- tv1 = thr->valstack_top - 1;
- DUK_TVAL_CHKFAST_INPLACE(tv1); /* fastint downgrade check for return values */
-
- /*
- * Four possible outcomes:
- *
- * 1. A 'finally' in the same function catches the 'return'.
- * It may continue to propagate when 'finally' is finished,
- * or it may be neutralized by 'finally' (both handled by
- * ENDFIN).
- *
- * 2. The return happens at the entry level of the bytecode
- * executor, so return from the executor (in C stack).
- *
- * 3. There is a calling (Ecmascript) activation in the call
- * stack => return to it, in the same executor instance.
- *
- * 4. There is no calling activation, and the thread is
- * terminated. There is always a resumer in this case,
- * which gets the return value similarly to a 'yield'
- * (except that the current thread can no longer be
- * resumed).
- */
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->catchstack != NULL);
-
- /* XXX: does not work if thr->catchstack is NULL */
- /* XXX: does not work if thr->catchstack is allocated but lowest pointer */
-
- cat = thr->catchstack + thr->catchstack_top - 1; /* may be < thr->catchstack initially */
- DUK_ASSERT(thr->callstack_top > 0); /* ensures callstack_top - 1 >= 0 */
- orig_callstack_index = thr->callstack_top - 1;
-
- while (cat >= thr->catchstack) {
- if (cat->callstack_index != orig_callstack_index) {
- break;
- }
- if (DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_TCF &&
- DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- duk_size_t cat_idx;
-
- cat_idx = (duk_size_t) (cat - thr->catchstack); /* get before side effects */
-
- DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
- duk__handle_finally(thr, cat_idx, thr->valstack_top - 1, DUK_LJ_TYPE_RETURN);
-
- DUK_DD(DUK_DDPRINT("-> return caught by 'finally', restart execution"));
- return DUK__RETHAND_RESTART;
- }
- cat--;
- }
- /* If out of catchstack, cat = thr->catchstack - 1;
- * new_cat_top will be 0 in that case.
- */
- new_cat_top = (duk_size_t) ((cat + 1) - thr->catchstack);
- cat = NULL; /* avoid referencing, invalidated */
-
- DUK_DDD(DUK_DDDPRINT("no catcher in catch stack, return to calling activation / yield"));
-
- if (thr == entry_thread &&
- thr->callstack_top == entry_callstack_top) {
- /* Return to the bytecode executor caller which will unwind stacks.
- * Return value is already on the stack top: [ ... retval ].
- */
-
- /* XXX: could unwind catchstack here, so that call handling
- * didn't need to do that?
- */
- DUK_DDD(DUK_DDDPRINT("-> return propagated up to entry level, exit bytecode executor"));
- return DUK__RETHAND_FINISHED;
- }
-
- if (thr->callstack_top >= 2) {
- /* There is a caller; it MUST be an Ecmascript caller (otherwise it would
- * match entry level check)
- */
-
- DUK_DDD(DUK_DDDPRINT("return to Ecmascript caller, idx_retval=%ld, lj_value1=%!T",
- (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
- (duk_tval *) &thr->heap->lj.value1));
-
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 2))); /* must be ecmascript */
-
- tv1 = thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval;
- DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
- tv2 = thr->valstack_top - 1;
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv1, tv2); /* side effects */
-
- DUK_DDD(DUK_DDDPRINT("return value at idx_retval=%ld is %!T",
- (long) (thr->callstack + thr->callstack_top - 2)->idx_retval,
- (duk_tval *) (thr->valstack + (thr->callstack + thr->callstack_top - 2)->idx_retval)));
-
- duk_hthread_catchstack_unwind(thr, new_cat_top); /* leave 'cat' as top catcher (also works if catchstack exhausted) */
- duk_hthread_callstack_unwind(thr, thr->callstack_top - 1);
- duk__reconfig_valstack_ecma_return(thr, thr->callstack_top - 1);
-
- DUK_DD(DUK_DDPRINT("-> return not intercepted, restart execution in caller"));
- return DUK__RETHAND_RESTART;
- }
-
- DUK_DD(DUK_DDPRINT("no calling activation, thread finishes (similar to yield)"));
-
- DUK_ASSERT(thr->resumer != NULL);
- DUK_ASSERT(thr->resumer->callstack_top >= 2); /* Ecmascript activation + Duktape.Thread.resume() activation */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1) != NULL &&
- DUK_HOBJECT_IS_NATIVEFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1)) &&
- ((duk_hnativefunction *) DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 1))->func == duk_bi_thread_resume); /* Duktape.Thread.resume() */
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2) != NULL &&
- DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->resumer->callstack + thr->resumer->callstack_top - 2))); /* an Ecmascript function */
- DUK_ASSERT_DISABLE((thr->resumer->callstack + thr->resumer->callstack_top - 2)->idx_retval >= 0); /* unsigned */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_RUNNING);
- DUK_ASSERT(thr->resumer->state == DUK_HTHREAD_STATE_RESUMED);
-
- resumer = thr->resumer;
-
- /* Share yield longjmp handler. */
- DUK_ASSERT(thr->valstack_top - 1 >= thr->valstack_bottom);
- duk__handle_yield(thr, resumer, resumer->callstack_top - 2, thr->valstack_top - 1);
-
- duk_hthread_terminate(thr); /* updates thread state, minimizes its allocations */
- DUK_ASSERT(thr->state == DUK_HTHREAD_STATE_TERMINATED);
-
- thr->resumer = NULL;
- resumer->state = DUK_HTHREAD_STATE_RUNNING;
- DUK_HEAP_SWITCH_THREAD(thr->heap, resumer);
-#if 0
- thr = resumer; /* not needed */
-#endif
-
- DUK_DD(DUK_DDPRINT("-> return not caught, thread terminated; handle like yield, restart execution in resumer"));
- return DUK__RETHAND_RESTART;
-}
-
-/*
- * Executor interrupt handling
- *
- * The handler is called whenever the interrupt countdown reaches zero
- * (or below). The handler must perform whatever checks are activated,
- * e.g. check for cumulative step count to impose an execution step
- * limit or check for breakpoints or other debugger interaction.
- *
- * When the actions are done, the handler must reinit the interrupt
- * init and counter values. The 'init' value must indicate how many
- * bytecode instructions are executed before the next interrupt. The
- * counter must interface with the bytecode executor loop. Concretely,
- * the new init value is normally one higher than the new counter value.
- * For instance, to execute exactly one bytecode instruction the init
- * value is set to 1 and the counter to 0. If an error is thrown by the
- * interrupt handler, the counters are set to the same value (e.g. both
- * to 0 to cause an interrupt when the next bytecode instruction is about
- * to be executed after error handling).
- *
- * Maintaining the init/counter value properly is important for accurate
- * behavior. For instance, executor step limit needs a cumulative step
- * count which is simply computed as a sum of 'init' values. This must
- * work accurately even when single stepping.
- */
-
-#if defined(DUK_USE_INTERRUPT_COUNTER)
-
-#define DUK__INT_NOACTION 0 /* no specific action, resume normal execution */
-#define DUK__INT_RESTART 1 /* must "goto restart_execution", e.g. breakpoints changed */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_LOCAL void duk__interrupt_handle_debugger(duk_hthread *thr, duk_bool_t *out_immediate, duk_small_uint_t *out_interrupt_retval) {
- duk_context *ctx;
- duk_activation *act;
- duk_breakpoint *bp;
- duk_breakpoint **bp_active;
- duk_uint_fast32_t line = 0;
- duk_bool_t process_messages;
- duk_bool_t processed_messages = 0;
-
- DUK_ASSERT(thr->heap->dbg_processing == 0); /* don't re-enter e.g. during Eval */
-
- ctx = (duk_context *) thr;
- act = thr->callstack + thr->callstack_top - 1;
-
- /* It might seem that replacing 'thr->heap' with just 'heap' below
- * might be a good idea, but it increases code size slightly
- * (probably due to unnecessary spilling) at least on x64.
- */
-
- /*
- * Breakpoint and step state checks
- */
-
- if (act->flags & DUK_ACT_FLAG_BREAKPOINT_ACTIVE ||
- (thr->heap->dbg_step_thread == thr &&
- thr->heap->dbg_step_csindex == thr->callstack_top - 1)) {
- line = duk_debug_curr_line(thr);
-
- if (act->prev_line != line) {
- /* Stepped? Step out is handled by callstack unwind. */
- if ((thr->heap->dbg_step_type == DUK_STEP_TYPE_INTO ||
- thr->heap->dbg_step_type == DUK_STEP_TYPE_OVER) &&
- (thr->heap->dbg_step_thread == thr) &&
- (thr->heap->dbg_step_csindex == thr->callstack_top - 1) &&
- (line != thr->heap->dbg_step_startline)) {
- DUK_D(DUK_DPRINT("STEP STATE TRIGGERED PAUSE at line %ld",
- (long) line));
-
- DUK_HEAP_SET_PAUSED(thr->heap);
- }
-
- /* Check for breakpoints only on line transition.
- * Breakpoint is triggered when we enter the target
- * line from a different line, and the previous line
- * was within the same function.
- *
- * This condition is tricky: the condition used to be
- * that transition to -or across- the breakpoint line
- * triggered the breakpoint. This seems intuitively
- * better because it handles breakpoints on lines with
- * no emitted opcodes; but this leads to the issue
- * described in: https://github.com/svaarala/duktape/issues/263.
- */
- bp_active = thr->heap->dbg_breakpoints_active;
- for (;;) {
- bp = *bp_active++;
- if (bp == NULL) {
- break;
- }
-
- DUK_ASSERT(bp->filename != NULL);
- if (act->prev_line != bp->line && line == bp->line) {
- DUK_D(DUK_DPRINT("BREAKPOINT TRIGGERED at %!O:%ld",
- (duk_heaphdr *) bp->filename, (long) bp->line));
-
- DUK_HEAP_SET_PAUSED(thr->heap);
- }
- }
- } else {
- ;
- }
-
- act->prev_line = line;
- }
-
- /*
- * Rate limit check for sending status update or peeking into
- * the debug transport. Both can be expensive operations that
- * we don't want to do on every opcode.
- *
- * Making sure the interval remains reasonable on a wide variety
- * of targets and bytecode is difficult without a timestamp, so
- * we use a Date-provided timestamp for the rate limit check.
- * But since it's also expensive to get a timestamp, a bytecode
- * counter is used to rate limit getting timestamps.
- */
-
- process_messages = 0;
- if (thr->heap->dbg_state_dirty || thr->heap->dbg_paused || thr->heap->dbg_detaching) {
- /* Enter message processing loop for sending Status notifys and
- * to finish a pending detach.
- */
- process_messages = 1;
- }
-
- /* XXX: remove heap->dbg_exec_counter, use heap->inst_count_interrupt instead? */
- thr->heap->dbg_exec_counter += thr->interrupt_init;
- if (thr->heap->dbg_exec_counter - thr->heap->dbg_last_counter >= DUK_HEAP_DBG_RATELIMIT_OPCODES) {
- /* Overflow of the execution counter is fine and doesn't break
- * anything here.
- */
-
- duk_double_t now, diff_last;
-
- thr->heap->dbg_last_counter = thr->heap->dbg_exec_counter;
- now = DUK_USE_DATE_GET_NOW(ctx);
-
- diff_last = now - thr->heap->dbg_last_time;
- if (diff_last < 0.0 || diff_last >= (duk_double_t) DUK_HEAP_DBG_RATELIMIT_MILLISECS) {
- /* Negative value checked so that a "time jump" works
- * reasonably.
- *
- * Same interval is now used for status sending and
- * peeking.
- */
-
- thr->heap->dbg_last_time = now;
- thr->heap->dbg_state_dirty = 1;
- process_messages = 1;
- }
- }
-
- /*
- * Process messages and send status if necessary.
- *
- * If we're paused, we'll block for new messages. If we're not
- * paused, we'll process anything we can peek but won't block
- * for more. Detach (and re-attach) handling is all localized
- * to duk_debug_process_messages() too.
- *
- * Debugger writes outside the message loop may cause debugger
- * detach1 phase to run, after which dbg_read_cb == NULL and
- * dbg_detaching != 0. The message loop will finish the detach
- * by running detach2 phase, so enter the message loop also when
- * detaching.
- */
-
- act = NULL; /* may be changed */
- if (process_messages) {
- DUK_ASSERT(thr->heap->dbg_processing == 0);
- processed_messages = duk_debug_process_messages(thr, 0 /*no_block*/);
- DUK_ASSERT(thr->heap->dbg_processing == 0);
- }
-
- /* Continue checked execution if there are breakpoints or we're stepping.
- * Also use checked execution if paused flag is active - it shouldn't be
- * because the debug message loop shouldn't terminate if it was. Step out
- * is handled by callstack unwind and doesn't need checked execution.
- * Note that debugger may have detached due to error or explicit request
- * above, so we must recheck attach status.
- */
-
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- act = thr->callstack + thr->callstack_top - 1; /* relookup, may have changed */
- if (act->flags & DUK_ACT_FLAG_BREAKPOINT_ACTIVE ||
- ((thr->heap->dbg_step_type == DUK_STEP_TYPE_INTO ||
- thr->heap->dbg_step_type == DUK_STEP_TYPE_OVER) &&
- thr->heap->dbg_step_thread == thr &&
- thr->heap->dbg_step_csindex == thr->callstack_top - 1) ||
- thr->heap->dbg_paused) {
- *out_immediate = 1;
- }
-
- /* If we processed any debug messages breakpoints may have
- * changed; restart execution to re-check active breakpoints.
- */
- if (processed_messages) {
- DUK_D(DUK_DPRINT("processed debug messages, restart execution to recheck possibly changed breakpoints"));
- *out_interrupt_retval = DUK__INT_RESTART;
- }
- } else {
- DUK_D(DUK_DPRINT("debugger became detached, resume normal execution"));
- }
-}
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
-DUK_LOCAL duk_small_uint_t duk__executor_interrupt(duk_hthread *thr) {
- duk_int_t ctr;
- duk_activation *act;
- duk_hcompiledfunction *fun;
- duk_bool_t immediate = 0;
- duk_small_uint_t retval;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->heap != NULL);
- DUK_ASSERT(thr->callstack != NULL);
- DUK_ASSERT(thr->callstack_top > 0);
-
-#if defined(DUK_USE_DEBUG)
- thr->heap->inst_count_interrupt += thr->interrupt_init;
- DUK_DD(DUK_DDPRINT("execution interrupt, counter=%ld, init=%ld, "
- "instruction counts: executor=%ld, interrupt=%ld",
- (long) thr->interrupt_counter, (long) thr->interrupt_init,
- (long) thr->heap->inst_count_exec, (long) thr->heap->inst_count_interrupt));
-#endif
-
- retval = DUK__INT_NOACTION;
- ctr = DUK_HTHREAD_INTCTR_DEFAULT;
-
- /*
- * Avoid nested calls. Concretely this happens during debugging, e.g.
- * when we eval() an expression.
- *
- * Also don't interrupt if we're currently doing debug processing
- * (which can be initiated outside the bytecode executor) as this
- * may cause the debugger to be called recursively. Check required
- * for correct operation of throw intercept and other "exotic" halting
- * scenarios.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap) || thr->heap->dbg_processing) {
-#else
- if (DUK_HEAP_HAS_INTERRUPT_RUNNING(thr->heap)) {
-#endif
- DUK_DD(DUK_DDPRINT("nested executor interrupt, ignoring"));
-
- /* Set a high interrupt counter; the original executor
- * interrupt invocation will rewrite before exiting.
- */
- thr->interrupt_init = ctr;
- thr->interrupt_counter = ctr - 1;
- return DUK__INT_NOACTION;
- }
- DUK_HEAP_SET_INTERRUPT_RUNNING(thr->heap);
-
- act = thr->callstack + thr->callstack_top - 1;
-
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION((duk_hobject *) fun));
-
- DUK_UNREF(fun);
-
-#if defined(DUK_USE_EXEC_TIMEOUT_CHECK)
- /*
- * Execution timeout check
- */
-
- if (DUK_USE_EXEC_TIMEOUT_CHECK(thr->heap->heap_udata)) {
- /* Keep throwing an error whenever we get here. The unusual values
- * are set this way because no instruction is ever executed, we just
- * throw an error until all try/catch/finally and other catchpoints
- * have been exhausted. Duktape/C code gets control at each protected
- * call but whenever it enters back into Duktape the RangeError gets
- * raised. User exec timeout check must consistently indicate a timeout
- * until we've fully bubbled out of Duktape.
- */
- DUK_D(DUK_DPRINT("execution timeout, throwing a RangeError"));
- thr->interrupt_init = 0;
- thr->interrupt_counter = 0;
- DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap);
- DUK_ERROR_RANGE(thr, "execution timeout");
- }
-#endif /* DUK_USE_EXEC_TIMEOUT_CHECK */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (!thr->heap->dbg_processing &&
- (thr->heap->dbg_read_cb != NULL || thr->heap->dbg_detaching)) {
- /* Avoid recursive re-entry; enter when we're attached or
- * detaching (to finish off the pending detach).
- */
- duk__interrupt_handle_debugger(thr, &immediate, &retval);
- act = thr->callstack + thr->callstack_top - 1; /* relookup if changed */
- DUK_UNREF(act); /* 'act' is no longer accessed, scanbuild fix */
- }
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
- /*
- * Update the interrupt counter
- */
-
- if (immediate) {
- /* Cause an interrupt after executing one instruction. */
- ctr = 1;
- }
-
- /* The counter value is one less than the init value: init value should
- * indicate how many instructions are executed before interrupt. To
- * execute 1 instruction (after interrupt handler return), counter must
- * be 0.
- */
- DUK_ASSERT(ctr >= 1);
- thr->interrupt_init = ctr;
- thr->interrupt_counter = ctr - 1;
- DUK_HEAP_CLEAR_INTERRUPT_RUNNING(thr->heap);
-
- return retval;
-}
-#endif /* DUK_USE_INTERRUPT_COUNTER */
-
-/*
- * Debugger handling for executor restart
- *
- * Check for breakpoints, stepping, etc, and figure out if we should execute
- * in checked or normal mode. Note that we can't do this when an activation
- * is created, because breakpoint status (and stepping status) may change
- * later, so we must recheck every time we're executing an activation.
- * This primitive should be side effect free to avoid changes during check.
- */
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
-DUK_LOCAL void duk__executor_recheck_debugger(duk_hthread *thr, duk_activation *act, duk_hcompiledfunction *fun) {
- duk_heap *heap;
- duk_tval *tv_tmp;
- duk_hstring *filename;
- duk_small_uint_t bp_idx;
- duk_breakpoint **bp_active;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(act != NULL);
- DUK_ASSERT(fun != NULL);
-
- heap = thr->heap;
- bp_active = heap->dbg_breakpoints_active;
- act->flags &= ~DUK_ACT_FLAG_BREAKPOINT_ACTIVE;
-
- tv_tmp = duk_hobject_find_existing_entry_tval_ptr(thr->heap, (duk_hobject *) fun, DUK_HTHREAD_STRING_FILE_NAME(thr));
- if (tv_tmp && DUK_TVAL_IS_STRING(tv_tmp)) {
- filename = DUK_TVAL_GET_STRING(tv_tmp);
-
- /* Figure out all active breakpoints. A breakpoint is
- * considered active if the current function's fileName
- * matches the breakpoint's fileName, AND there is no
- * inner function that has matching line numbers
- * (otherwise a breakpoint would be triggered both
- * inside and outside of the inner function which would
- * be confusing). Example:
- *
- * function foo() {
- * print('foo');
- * function bar() { <-. breakpoints in these
- * print('bar'); | lines should not affect
- * } <-' foo() execution
- * bar();
- * }
- *
- * We need a few things that are only available when
- * debugger support is enabled: (1) a line range for
- * each function, and (2) access to the function
- * template to access the inner functions (and their
- * line ranges).
- *
- * It's important to have a narrow match for active
- * breakpoints so that we don't enter checked execution
- * when that's not necessary. For instance, if we're
- * running inside a certain function and there's
- * breakpoint outside in (after the call site), we
- * don't want to slow down execution of the function.
- */
-
- for (bp_idx = 0; bp_idx < heap->dbg_breakpoint_count; bp_idx++) {
- duk_breakpoint *bp = heap->dbg_breakpoints + bp_idx;
- duk_hobject **funcs, **funcs_end;
- duk_hcompiledfunction *inner_fun;
- duk_bool_t bp_match;
-
- if (bp->filename == filename &&
- bp->line >= fun->start_line && bp->line <= fun->end_line) {
- bp_match = 1;
- DUK_DD(DUK_DDPRINT("breakpoint filename and line match: "
- "%s:%ld vs. %s (line %ld vs. %ld-%ld)",
- DUK_HSTRING_GET_DATA(bp->filename),
- (long) bp->line,
- DUK_HSTRING_GET_DATA(filename),
- (long) bp->line,
- (long) fun->start_line,
- (long) fun->end_line));
-
- funcs = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun);
- funcs_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, fun);
- while (funcs != funcs_end) {
- inner_fun = (duk_hcompiledfunction *) *funcs;
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) inner_fun));
- if (bp->line >= inner_fun->start_line && bp->line <= inner_fun->end_line) {
- DUK_DD(DUK_DDPRINT("inner function masks ('captures') breakpoint"));
- bp_match = 0;
- break;
- }
- funcs++;
- }
-
- if (bp_match) {
- /* No need to check for size of bp_active list,
- * it's always larger than maximum number of
- * breakpoints.
- */
- act->flags |= DUK_ACT_FLAG_BREAKPOINT_ACTIVE;
- *bp_active = heap->dbg_breakpoints + bp_idx;
- bp_active++;
- }
- }
- }
- }
-
- *bp_active = NULL; /* terminate */
-
- DUK_DD(DUK_DDPRINT("ACTIVE BREAKPOINTS: %ld", (long) (bp_active - thr->heap->dbg_breakpoints_active)));
-
- /* Force pause if we were doing "step into" in another activation. */
- if (thr->heap->dbg_step_thread != NULL &&
- thr->heap->dbg_step_type == DUK_STEP_TYPE_INTO &&
- (thr->heap->dbg_step_thread != thr ||
- thr->heap->dbg_step_csindex != thr->callstack_top - 1)) {
- DUK_D(DUK_DPRINT("STEP INTO ACTIVE, FORCE PAUSED"));
- DUK_HEAP_SET_PAUSED(thr->heap);
- }
-
- /* Force interrupt right away if we're paused or in "checked mode".
- * Step out is handled by callstack unwind.
- */
- if (act->flags & (DUK_ACT_FLAG_BREAKPOINT_ACTIVE) ||
- thr->heap->dbg_paused ||
- (thr->heap->dbg_step_type != DUK_STEP_TYPE_OUT &&
- thr->heap->dbg_step_csindex == thr->callstack_top - 1)) {
- /* We'll need to interrupt early so recompute the init
- * counter to reflect the number of bytecode instructions
- * executed so that step counts for e.g. debugger rate
- * limiting are accurate.
- */
- DUK_ASSERT(thr->interrupt_counter <= thr->interrupt_init);
- thr->interrupt_init = thr->interrupt_init - thr->interrupt_counter;
- thr->interrupt_counter = 0;
- }
-}
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
-/*
- * Ecmascript bytecode executor.
- *
- * Resume execution for the current thread from its current activation.
- * Returns when execution would return from the entry level activation,
- * leaving a single return value on top of the stack. Function calls
- * and thread resumptions are handled internally. If an error occurs,
- * a longjmp() with type DUK_LJ_TYPE_THROW is called on the entry level
- * setjmp() jmpbuf.
- *
- * Ecmascript function calls and coroutine resumptions are handled
- * internally (by the outer executor function) without recursive C calls.
- * Other function calls are handled using duk_handle_call(), increasing
- * C recursion depth.
- *
- * Abrupt completions (= long control tranfers) are handled either
- * directly by reconfiguring relevant stacks and restarting execution,
- * or via a longjmp. Longjmp-free handling is preferable for performance
- * (especially Emscripten performance), and is used for: break, continue,
- * and return.
- *
- * For more detailed notes, see doc/execution.rst.
- *
- * Also see doc/code-issues.rst for discussion of setjmp(), longjmp(),
- * and volatile.
- */
-
-/* Presence of 'fun' is config based, there's a marginal performance
- * difference and the best option is architecture dependent.
- */
-#if defined(DUK_USE_EXEC_FUN_LOCAL)
-#define DUK__FUN() fun
-#else
-#define DUK__FUN() ((duk_hcompiledfunction *) DUK_ACT_GET_FUNC((thr)->callstack + (thr)->callstack_top - 1))
-#endif
-#define DUK__STRICT() (DUK_HOBJECT_HAS_STRICT((duk_hobject *) DUK__FUN()))
-
-/* Reg/const access macros: these are very footprint and performance sensitive
- * so modify with care.
- */
-#define DUK__REG(x) (*(thr->valstack_bottom + (x)))
-#define DUK__REGP(x) (thr->valstack_bottom + (x))
-#define DUK__CONST(x) (*(consts + (x)))
-#define DUK__CONSTP(x) (consts + (x))
-#if 0
-#define DUK__REGCONST(x) ((x) < DUK_BC_REGLIMIT ? DUK__REG((x)) : DUK__CONST((x) - DUK_BC_REGLIMIT))
-#define DUK__REGCONSTP(x) ((x) < DUK_BC_REGLIMIT ? DUK__REGP((x)) : DUK__CONSTP((x) - DUK_BC_REGLIMIT))
-#define DUK__REGCONST(x) *((((x) < DUK_BC_REGLIMIT ? thr->valstack_bottom : consts2) + (x)))
-#define DUK__REGCONSTP(x) (((x) < DUK_BC_REGLIMIT ? thr->valstack_bottom : consts2) + (x))
-#endif
-/* This macro works when a regconst field is 9 bits, [0,0x1ff]. Adding
- * DUK_LIKELY/DUK_UNLIKELY increases code footprint and doesn't seem to
- * improve performance on x64 (and actually harms performance in some tests).
- */
-#define DUK__RCISREG(x) (((x) & 0x100) == 0)
-#define DUK__REGCONST(x) (*((DUK__RCISREG((x)) ? thr->valstack_bottom : consts2) + (x)))
-#define DUK__REGCONSTP(x) ((DUK__RCISREG((x)) ? thr->valstack_bottom : consts2) + (x))
-
-#ifdef DUK_USE_VERBOSE_EXECUTOR_ERRORS
-#define DUK__INTERNAL_ERROR(msg) do { \
- DUK_ERROR_INTERNAL(thr, (msg)); \
- } while (0)
-#else
-#define DUK__INTERNAL_ERROR(msg) do { \
- goto internal_error; \
- } while (0)
-#endif
-
-#define DUK__SYNC_CURR_PC() do { \
- duk_activation *act; \
- act = thr->callstack + thr->callstack_top - 1; \
- act->curr_pc = curr_pc; \
- } while (0)
-#define DUK__SYNC_AND_NULL_CURR_PC() do { \
- duk_activation *act; \
- act = thr->callstack + thr->callstack_top - 1; \
- act->curr_pc = curr_pc; \
- thr->ptr_curr_pc = NULL; \
- } while (0)
-
-DUK_LOCAL void duk__handle_executor_error(duk_heap *heap,
- duk_hthread *entry_thread,
- duk_size_t entry_callstack_top,
- duk_int_t entry_call_recursion_depth,
- duk_jmpbuf *entry_jmpbuf_ptr) {
- duk_small_uint_t lj_ret;
-
- /* Longjmp callers are required to sync-and-null thr->ptr_curr_pc
- * before longjmp.
- */
- DUK_ASSERT(heap->curr_thread != NULL);
- DUK_ASSERT(heap->curr_thread->ptr_curr_pc == NULL);
-
- /* XXX: signalling the need to shrink check (only if unwound) */
-
- /* Must be restored here to handle e.g. yields properly. */
- heap->call_recursion_depth = entry_call_recursion_depth;
-
- /* Switch to caller's setjmp() catcher so that if an error occurs
- * during error handling, it is always propagated outwards instead
- * of causing an infinite loop in our own handler.
- */
- heap->lj.jmpbuf_ptr = (duk_jmpbuf *) entry_jmpbuf_ptr;
-
- lj_ret = duk__handle_longjmp(heap->curr_thread, entry_thread, entry_callstack_top);
-
- if (lj_ret == DUK__LONGJMP_RESTART) {
- /* Restart bytecode execution, possibly with a changed thread. */
- ;
- } else {
- /* Rethrow error to calling state. */
- DUK_ASSERT(lj_ret == DUK__LONGJMP_RETHROW);
-
- /* Longjmp handling has restored jmpbuf_ptr. */
- DUK_ASSERT(heap->lj.jmpbuf_ptr == entry_jmpbuf_ptr);
-
- /* Thread may have changed, e.g. YIELD converted to THROW. */
- duk_err_longjmp(heap->curr_thread);
- DUK_UNREACHABLE();
- }
-}
-
-/* Outer executor with setjmp/longjmp handling. */
-DUK_INTERNAL void duk_js_execute_bytecode(duk_hthread *exec_thr) {
- /* Entry level info. */
- duk_hthread *entry_thread;
- duk_size_t entry_callstack_top;
- duk_int_t entry_call_recursion_depth;
- duk_jmpbuf *entry_jmpbuf_ptr;
- duk_jmpbuf our_jmpbuf;
- duk_heap *heap;
-
- DUK_ASSERT(exec_thr != NULL);
- DUK_ASSERT(exec_thr->heap != NULL);
- DUK_ASSERT(exec_thr->heap->curr_thread != NULL);
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR((duk_heaphdr *) exec_thr);
- DUK_ASSERT(exec_thr->callstack_top >= 1); /* at least one activation, ours */
- DUK_ASSERT(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(exec_thr->callstack + exec_thr->callstack_top - 1)));
-
- entry_thread = exec_thr;
- heap = entry_thread->heap;
- entry_callstack_top = entry_thread->callstack_top;
- entry_call_recursion_depth = entry_thread->heap->call_recursion_depth;
- entry_jmpbuf_ptr = entry_thread->heap->lj.jmpbuf_ptr;
-
- /*
- * Note: we currently assume that the setjmp() catchpoint is
- * not re-entrant (longjmp() cannot be called more than once
- * for a single setjmp()).
- *
- * See doc/code-issues.rst for notes on variable assignment
- * before and after setjmp().
- */
-
- for (;;) {
- heap->lj.jmpbuf_ptr = &our_jmpbuf;
- DUK_ASSERT(heap->lj.jmpbuf_ptr != NULL);
-
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- try {
-#else
- DUK_ASSERT(heap->lj.jmpbuf_ptr == &our_jmpbuf);
- if (DUK_SETJMP(our_jmpbuf.jb) == 0) {
-#endif
- /* Execute bytecode until returned or longjmp(). */
- duk__js_execute_bytecode_inner(entry_thread, entry_callstack_top);
-
- /* Successful return: restore jmpbuf and return to caller. */
- heap->lj.jmpbuf_ptr = entry_jmpbuf_ptr;
-
- return;
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- } catch (duk_internal_exception &exc) {
-#else
- } else {
-#endif
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- DUK_UNREF(exc);
-#endif
- DUK_DDD(DUK_DDDPRINT("longjmp caught by bytecode executor"));
-
- duk__handle_executor_error(heap,
- entry_thread,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_jmpbuf_ptr);
- }
-#if defined(DUK_USE_CPP_EXCEPTIONS)
- catch (std::exception &exc) {
- const char *what = exc.what();
- if (!what) {
- what = "unknown";
- }
- DUK_D(DUK_DPRINT("unexpected c++ std::exception (perhaps thrown by user code)"));
- try {
- DUK_ASSERT(heap->curr_thread != NULL);
- DUK_ERROR_FMT1(heap->curr_thread, DUK_ERR_API_ERROR, "caught invalid c++ std::exception '%s' (perhaps thrown by user code)", what);
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ std::exception"));
- DUK_UNREF(exc);
- duk__handle_executor_error(heap,
- entry_thread,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_jmpbuf_ptr);
- }
- } catch (...) {
- DUK_D(DUK_DPRINT("unexpected c++ exception (perhaps thrown by user code)"));
- try {
- DUK_ASSERT(heap->curr_thread != NULL);
- DUK_ERROR_API(heap->curr_thread, "caught invalid c++ exception (perhaps thrown by user code)");
- } catch (duk_internal_exception exc) {
- DUK_D(DUK_DPRINT("caught api error thrown from unexpected c++ exception"));
- DUK_UNREF(exc);
- duk__handle_executor_error(heap,
- entry_thread,
- entry_callstack_top,
- entry_call_recursion_depth,
- entry_jmpbuf_ptr);
- }
- }
-#endif
- }
-
- DUK_UNREACHABLE();
-}
-
-/* Inner executor, performance critical. */
-DUK_LOCAL DUK_NOINLINE void duk__js_execute_bytecode_inner(duk_hthread *entry_thread, duk_size_t entry_callstack_top) {
- /* Current PC, accessed by other functions through thr->ptr_to_curr_pc.
- * Critical for performance. It would be safest to make this volatile,
- * but that eliminates performance benefits; aliasing guarantees
- * should be enough though.
- */
- duk_instr_t *curr_pc; /* bytecode has a stable pointer */
-
- /* Hot variables for interpretation. Critical for performance,
- * but must add sparingly to minimize register shuffling.
- */
- duk_hthread *thr; /* stable */
- duk_tval *consts; /* stable */
- duk_tval *consts2; /* stable; precalculated for faster lookups */
- duk_uint_fast32_t ins;
- /* 'funcs' is quite rarely used, so no local for it */
-#if defined(DUK_USE_EXEC_FUN_LOCAL)
- duk_hcompiledfunction *fun;
-#else
- /* 'fun' is quite rarely used, so no local for it */
-#endif
-
-#ifdef DUK_USE_INTERRUPT_COUNTER
- duk_int_t int_ctr;
-#endif
-
-#ifdef DUK_USE_ASSERTIONS
- duk_size_t valstack_top_base; /* valstack top, should match before interpreting each op (no leftovers) */
-#endif
-
- /*
- * Restart execution by reloading thread state.
- *
- * Note that 'thr' and any thread configuration may have changed,
- * so all local variables are suspect and we need to reinitialize.
- *
- * The number of local variables should be kept to a minimum: if
- * the variables are spilled, they will need to be loaded from
- * memory anyway.
- *
- * Any 'goto restart_execution;' code path in opcode dispatch must
- * ensure 'curr_pc' is synced back to act->curr_pc before the goto
- * takes place.
- *
- * The interpreter must be very careful with memory pointers, as
- * many pointers are not guaranteed to be 'stable' and may be
- * reallocated and relocated on-the-fly quite easily (e.g. by a
- * memory allocation or a property access).
- *
- * The following are assumed to have stable pointers:
- * - the current thread
- * - the current function
- * - the bytecode, constant table, inner function table of the
- * current function (as they are a part of the function allocation)
- *
- * The following are assumed to have semi-stable pointers:
- * - the current activation entry: stable as long as callstack
- * is not changed (reallocated by growing or shrinking), or
- * by any garbage collection invocation (through finalizers)
- * - Note in particular that ANY DECREF can invalidate the
- * activation pointer, so for the most part a fresh lookup
- * is required
- *
- * The following are not assumed to have stable pointers at all:
- * - the value stack (registers) of the current thread
- * - the catch stack of the current thread
- *
- * See execution.rst for discussion.
- */
-
- restart_execution:
-
- /* Lookup current thread; use the stable 'entry_thread' for this to
- * avoid clobber warnings. Any valid, reachable 'thr' value would be
- * fine for this, so using 'entry_thread' is just to silence warnings.
- */
- thr = entry_thread->heap->curr_thread;
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_ACT_GET_FUNC(thr->callstack + thr->callstack_top - 1)));
-
- thr->ptr_curr_pc = &curr_pc;
-
- /* Relookup and initialize dispatch loop variables. Debugger check. */
- {
- duk_activation *act;
-#if !defined(DUK_USE_EXEC_FUN_LOCAL)
- duk_hcompiledfunction *fun;
-#endif
-
- /* Assume interrupt init/counter are properly initialized here. */
- /* Assume that thr->valstack_bottom has been set-up before getting here. */
-
- act = thr->callstack + thr->callstack_top - 1;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(fun != NULL);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == fun->nregs);
- consts = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, fun);
- DUK_ASSERT(consts != NULL);
- consts2 = consts - DUK_BC_REGLIMIT;
-
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap) && !thr->heap->dbg_processing) {
- duk__executor_recheck_debugger(thr, act, fun);
- act = thr->callstack + thr->callstack_top - 1; /* relookup after side effects (no side effects currently however) */
- }
-#endif /* DUK_USE_DEBUGGER_SUPPORT */
-
-#ifdef DUK_USE_ASSERTIONS
- valstack_top_base = (duk_size_t) (thr->valstack_top - thr->valstack);
-#endif
-
- /* Set up curr_pc for opcode dispatch. */
- curr_pc = act->curr_pc;
- }
-
- DUK_DD(DUK_DDPRINT("restarting execution, thr %p, act idx %ld, fun %p,"
- "consts %p, funcs %p, lev %ld, regbot %ld, regtop %ld, catchstack_top=%ld, "
- "preventcount=%ld",
- (void *) thr,
- (long) (thr->callstack_top - 1),
- (void *) DUK__FUN(),
- (void *) DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, DUK__FUN()),
- (void *) DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, DUK__FUN()),
- (long) (thr->callstack_top - 1),
- (long) (thr->valstack_bottom - thr->valstack),
- (long) (thr->valstack_top - thr->valstack),
- (long) thr->catchstack_top,
- (long) thr->callstack_preventcount));
-
- /* Dispatch loop. */
-
- for (;;) {
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->valstack_top - thr->valstack_bottom == DUK__FUN()->nregs);
- DUK_ASSERT((duk_size_t) (thr->valstack_top - thr->valstack) == valstack_top_base);
-
- /* Executor interrupt counter check, used to implement breakpoints,
- * debugging interface, execution timeouts, etc. The counter is heap
- * specific but is maintained in the current thread to make the check
- * as fast as possible. The counter is copied back to the heap struct
- * whenever a thread switch occurs by the DUK_HEAP_SWITCH_THREAD() macro.
- */
-#if defined(DUK_USE_INTERRUPT_COUNTER)
- int_ctr = thr->interrupt_counter;
- if (DUK_LIKELY(int_ctr > 0)) {
- thr->interrupt_counter = int_ctr - 1;
- } else {
- /* Trigger at zero or below */
- duk_small_uint_t exec_int_ret;
-
- /* Write curr_pc back for the debugger. */
- DUK_ASSERT(thr->callstack_top > 0);
- {
- duk_activation *act;
- act = thr->callstack + thr->callstack_top - 1;
- act->curr_pc = (duk_instr_t *) curr_pc;
- }
-
- /* Force restart caused by a function return; must recheck
- * debugger breakpoints before checking line transitions,
- * see GH-303. Restart and then handle interrupt_counter
- * zero again.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (thr->heap->dbg_force_restart) {
- DUK_DD(DUK_DDPRINT("dbg_force_restart flag forced restart execution")); /* GH-303 */
- thr->heap->dbg_force_restart = 0;
- goto restart_execution;
- }
-#endif
-
- exec_int_ret = duk__executor_interrupt(thr);
- if (exec_int_ret == DUK__INT_RESTART) {
- /* curr_pc synced back above */
- goto restart_execution;
- }
- }
-#endif /* DUK_USE_INTERRUPT_COUNTER */
-#if defined(DUK_USE_INTERRUPT_COUNTER) && defined(DUK_USE_DEBUG)
- /* For cross-checking during development: ensure dispatch count
- * matches cumulative interrupt counter init value sums.
- */
- thr->heap->inst_count_exec++;
-#endif
-
-#if defined(DUK_USE_ASSERTIONS) || defined(DUK_USE_DEBUG)
- {
- duk_activation *act;
- act = thr->callstack + thr->callstack_top - 1;
- DUK_ASSERT(curr_pc >= DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN()));
- DUK_ASSERT(curr_pc < DUK_HCOMPILEDFUNCTION_GET_CODE_END(thr->heap, DUK__FUN()));
- DUK_UNREF(act); /* if debugging disabled */
-
- DUK_DDD(DUK_DDDPRINT("executing bytecode: pc=%ld, ins=0x%08lx, op=%ld, valstack_top=%ld/%ld, nregs=%ld --> %!I",
- (long) (curr_pc - DUK_HCOMPILEDFUNCTION_GET_CODE_BASE(thr->heap, DUK__FUN())),
- (unsigned long) *curr_pc,
- (long) DUK_DEC_OP(*curr_pc),
- (long) (thr->valstack_top - thr->valstack),
- (long) (thr->valstack_end - thr->valstack),
- (long) (DUK__FUN() ? DUK__FUN()->nregs : -1),
- (duk_instr_t) *curr_pc));
- }
-#endif
-
-#if defined(DUK_USE_ASSERTIONS)
- /* Quite heavy assert: check valstack policy. Improper
- * shuffle instructions can write beyond valstack_top/end
- * so this check catches them in the act.
- */
- {
- duk_tval *tv;
- tv = thr->valstack_top;
- while (tv != thr->valstack_end) {
- DUK_ASSERT(DUK_TVAL_IS_UNDEFINED(tv));
- tv++;
- }
- }
-#endif
-
- ins = *curr_pc++;
-
- /* Typing: use duk_small_(u)int_fast_t when decoding small
- * opcode fields (op, A, B, C) and duk_(u)int_fast_t when
- * decoding larger fields (e.g. BC which is 18 bits). Use
- * unsigned variant by default, signed when the value is used
- * in signed arithmetic. Using variable names such as 'a', 'b',
- * 'c', 'bc', etc makes it easier to spot typing mismatches.
- */
-
- /* XXX: the best typing needs to be validated by perf measurement:
- * e.g. using a small type which is the cast to a larger duk_idx_t
- * may be slower than declaring the variable as a duk_idx_t in the
- * first place.
- */
-
- /* XXX: use macros for the repetitive tval/refcount handling. */
-
- switch ((int) DUK_DEC_OP(ins)) {
- /* XXX: switch cast? */
-
- case DUK_OP_LDREG: {
- duk_small_uint_fast_t a;
- duk_uint_fast_t bc;
- duk_tval *tv1, *tv2;
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
- break;
- }
-
- case DUK_OP_STREG: {
- duk_small_uint_fast_t a;
- duk_uint_fast_t bc;
- duk_tval *tv1, *tv2;
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- bc = DUK_DEC_BC(ins); tv2 = DUK__REGP(bc);
- DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv2, tv1); /* side effects */
- break;
- }
-
- case DUK_OP_LDCONST: {
- duk_small_uint_fast_t a;
- duk_uint_fast_t bc;
- duk_tval *tv1, *tv2;
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- bc = DUK_DEC_BC(ins); tv2 = DUK__CONSTP(bc);
- DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
- break;
- }
-
- case DUK_OP_LDINT: {
- duk_small_uint_fast_t a;
- duk_int_fast_t bc;
- duk_tval *tv1;
-#if defined(DUK_USE_FASTINT)
- duk_int32_t val;
-#else
- duk_double_t val;
-#endif
-
-#if defined(DUK_USE_FASTINT)
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- bc = DUK_DEC_BC(ins); val = (duk_int32_t) (bc - DUK_BC_LDINT_BIAS);
- DUK_TVAL_SET_FASTINT_I32_UPDREF(thr, tv1, val); /* side effects */
-#else
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- bc = DUK_DEC_BC(ins); val = (duk_double_t) (bc - DUK_BC_LDINT_BIAS);
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv1, val); /* side effects */
-#endif
- break;
- }
-
- case DUK_OP_LDINTX: {
- duk_small_uint_fast_t a;
- duk_tval *tv1;
- duk_double_t val;
-
- /* LDINTX is not necessarily in FASTINT range, so
- * no fast path for now.
- *
- * XXX: perhaps restrict LDINTX to fastint range, wider
- * range very rarely needed.
- */
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
- val = DUK_TVAL_GET_NUMBER(tv1) * ((duk_double_t) (1L << DUK_BC_LDINTX_SHIFT)) +
- (duk_double_t) DUK_DEC_BC(ins);
-#if defined(DUK_USE_FASTINT)
- DUK_TVAL_SET_NUMBER_CHKFAST(tv1, val);
-#else
- DUK_TVAL_SET_NUMBER(tv1, val);
-#endif
- break;
- }
-
- case DUK_OP_MPUTOBJ:
- case DUK_OP_MPUTOBJI: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a;
- duk_tval *tv1;
- duk_hobject *obj;
- duk_uint_fast_t idx;
- duk_small_uint_fast_t count;
-
- /* A -> register of target object
- * B -> first register of key/value pair list
- * C -> number of key/value pairs
- */
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1));
- obj = DUK_TVAL_GET_OBJECT(tv1);
-
- idx = (duk_uint_fast_t) DUK_DEC_B(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_MPUTOBJI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
- count = (duk_small_uint_fast_t) DUK_DEC_C(ins);
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (DUK_UNLIKELY(idx + count * 2 > (duk_uint_fast_t) duk_get_top(ctx))) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("MPUTOBJ out of bounds");
- }
-#endif
-
- duk_push_hobject(ctx, obj);
-
- while (count > 0) {
- /* XXX: faster initialization (direct access or better primitives) */
-
- duk_push_tval(ctx, DUK__REGP(idx));
- DUK_ASSERT(duk_is_string(ctx, -1));
- duk_push_tval(ctx, DUK__REGP(idx + 1)); /* -> [... obj key value] */
- duk_xdef_prop_wec(ctx, -3); /* -> [... obj] */
-
- count--;
- idx += 2;
- }
-
- duk_pop(ctx); /* [... obj] -> [...] */
- break;
- }
-
- case DUK_OP_MPUTARR:
- case DUK_OP_MPUTARRI: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a;
- duk_tval *tv1;
- duk_hobject *obj;
- duk_uint_fast_t idx;
- duk_small_uint_fast_t count;
- duk_uint32_t arr_idx;
-
- /* A -> register of target object
- * B -> first register of value data (start_index, value1, value2, ..., valueN)
- * C -> number of key/value pairs (N)
- */
-
- a = DUK_DEC_A(ins); tv1 = DUK__REGP(a);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1));
- obj = DUK_TVAL_GET_OBJECT(tv1);
- DUK_ASSERT(obj != NULL);
-
- idx = (duk_uint_fast_t) DUK_DEC_B(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_MPUTARRI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
- count = (duk_small_uint_fast_t) DUK_DEC_C(ins);
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + count + 1 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("MPUTARR out of bounds");
- }
-#endif
-
- tv1 = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
- arr_idx = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv1);
- idx++;
-
- duk_push_hobject(ctx, obj);
-
- while (count > 0) {
- /* duk_xdef_prop() will define an own property without any array
- * special behaviors. We'll need to set the array length explicitly
- * in the end. For arrays with elisions, the compiler will emit an
- * explicit SETALEN which will update the length.
- */
-
- /* XXX: because we're dealing with 'own' properties of a fresh array,
- * the array initializer should just ensure that the array has a large
- * enough array part and write the values directly into array part,
- * and finally set 'length' manually in the end (as already happens now).
- */
-
- duk_push_tval(ctx, DUK__REGP(idx)); /* -> [... obj value] */
- duk_xdef_prop_index_wec(ctx, -2, arr_idx); /* -> [... obj] */
-
- /* XXX: could use at least one fewer loop counters */
- count--;
- idx++;
- arr_idx++;
- }
-
- /* XXX: E5.1 Section 11.1.4 coerces the final length through
- * ToUint32() which is odd but happens now as a side effect of
- * 'arr_idx' type.
- */
- duk_hobject_set_length(thr, obj, (duk_uint32_t) arr_idx);
-
- duk_pop(ctx); /* [... obj] -> [...] */
- break;
- }
-
- case DUK_OP_NEW:
- case DUK_OP_NEWI: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_uint_fast_t idx;
- duk_small_uint_fast_t i;
-
- /* A -> unused (reserved for flags, for consistency with DUK_OP_CALL)
- * B -> target register and start reg: constructor, arg1, ..., argN
- * (for DUK_OP_NEWI, 'b' is indirect)
- * C -> num args (N)
- */
-
- /* duk_new() will call the constuctor using duk_handle_call().
- * A constructor call prevents a yield from inside the constructor,
- * even if the constructor is an Ecmascript function.
- */
-
- /* Don't need to sync curr_pc here; duk_new() will do that
- * when it augments the created error.
- */
-
- /* XXX: unnecessary copying of values? Just set 'top' to
- * b + c, and let the return handling fix up the stack frame?
- */
-
- idx = (duk_uint_fast_t) DUK_DEC_B(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_NEWI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + c + 1 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("NEW out of bounds");
- }
-#endif
-
- duk_require_stack(ctx, (duk_idx_t) c);
- duk_push_tval(ctx, DUK__REGP(idx));
- for (i = 0; i < c; i++) {
- duk_push_tval(ctx, DUK__REGP(idx + i + 1));
- }
- duk_new(ctx, (duk_idx_t) c); /* [... constructor arg1 ... argN] -> [retval] */
- DUK_DDD(DUK_DDDPRINT("NEW -> %!iT", (duk_tval *) duk_get_tval(ctx, -1)));
- duk_replace(ctx, (duk_idx_t) idx);
-
- /* When debugger is enabled, we need to recheck the activation
- * status after returning. This is now handled by call handling
- * and heap->dbg_force_restart.
- */
- break;
- }
-
- case DUK_OP_REGEXP: {
-#ifdef DUK_USE_REGEXP_SUPPORT
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
-
- /* A -> target register
- * B -> bytecode (also contains flags)
- * C -> escaped source
- */
-
- duk_push_tval(ctx, DUK__REGCONSTP(c));
- duk_push_tval(ctx, DUK__REGCONSTP(b)); /* -> [ ... escaped_source bytecode ] */
- duk_regexp_create_instance(thr); /* -> [ ... regexp_instance ] */
- DUK_DDD(DUK_DDDPRINT("regexp instance: %!iT", (duk_tval *) duk_get_tval(ctx, -1)));
- duk_replace(ctx, (duk_idx_t) a);
-#else
- /* The compiler should never emit DUK_OP_REGEXP if there is no
- * regexp support.
- */
- DUK__INTERNAL_ERROR("no regexp support");
-#endif
-
- break;
- }
-
- case DUK_OP_CSREG:
- case DUK_OP_CSREGI: {
- /*
- * Assuming a register binds to a variable declared within this
- * function (a declarative binding), the 'this' for the call
- * setup is always 'undefined'. E5 Section 10.2.1.1.6.
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins); /* restricted to regs */
- duk_uint_fast_t idx;
-
- /* A -> target register (A, A+1) for call setup
- * (for DUK_OP_CSREGI, 'a' is indirect)
- * B -> register containing target function (not type checked here)
- */
-
- /* XXX: direct manipulation, or duk_replace_tval() */
-
- /* Note: target registers a and a+1 may overlap with DUK__REGP(b).
- * Careful here.
- */
-
- idx = (duk_uint_fast_t) DUK_DEC_A(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_CSREGI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + 2 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("CSREG out of bounds");
- }
-#endif
-
- duk_push_tval(ctx, DUK__REGP(b));
- duk_replace(ctx, (duk_idx_t) idx);
- duk_push_undefined(ctx);
- duk_replace(ctx, (duk_idx_t) (idx + 1));
- break;
- }
-
- case DUK_OP_GETVAR: {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
- duk_hstring *name;
-
- tv1 = DUK__CONSTP(bc);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
- DUK_DDD(DUK_DDDPRINT("GETVAR: '%!O'", (duk_heaphdr *) name));
- act = thr->callstack + thr->callstack_top - 1;
- (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
-
- duk_pop(ctx); /* 'this' binding is not needed here */
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_PUTVAR: {
- duk_activation *act;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
- duk_hstring *name;
-
- tv1 = DUK__CONSTP(bc);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
-
- /* XXX: putvar takes a duk_tval pointer, which is awkward and
- * should be reworked.
- */
-
- tv1 = DUK__REGP(a); /* val */
- act = thr->callstack + thr->callstack_top - 1;
- duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT());
- break;
- }
-
- case DUK_OP_DECLVAR: {
- duk_activation *act;
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_tval *tv1;
- duk_hstring *name;
- duk_small_uint_t prop_flags;
- duk_bool_t is_func_decl;
- duk_bool_t is_undef_value;
-
- tv1 = DUK__REGCONSTP(b);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
-
- is_undef_value = ((a & DUK_BC_DECLVAR_FLAG_UNDEF_VALUE) != 0);
- is_func_decl = ((a & DUK_BC_DECLVAR_FLAG_FUNC_DECL) != 0);
-
- /* XXX: declvar takes an duk_tval pointer, which is awkward and
- * should be reworked.
- */
-
- /* Compiler is responsible for selecting property flags (configurability,
- * writability, etc).
- */
- prop_flags = a & DUK_PROPDESC_FLAGS_MASK;
-
- if (is_undef_value) {
- duk_push_undefined(ctx);
- } else {
- duk_push_tval(ctx, DUK__REGCONSTP(c));
- }
- tv1 = DUK_GET_TVAL_NEGIDX(ctx, -1);
-
- act = thr->callstack + thr->callstack_top - 1;
- if (duk_js_declvar_activation(thr, act, name, tv1, prop_flags, is_func_decl)) {
- /* already declared, must update binding value */
- tv1 = DUK_GET_TVAL_NEGIDX(ctx, -1);
- duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT());
- }
-
- duk_pop(ctx);
- break;
- }
-
- case DUK_OP_DELVAR: {
- duk_activation *act;
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_tval *tv1;
- duk_hstring *name;
- duk_bool_t rc;
-
- tv1 = DUK__REGCONSTP(b);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
- DUK_DDD(DUK_DDDPRINT("DELVAR '%!O'", (duk_heaphdr *) name));
- act = thr->callstack + thr->callstack_top - 1;
- rc = duk_js_delvar_activation(thr, act, name);
-
- duk_push_boolean(ctx, rc);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_CSVAR:
- case DUK_OP_CSVARI: {
- /* 'this' value:
- * E5 Section 6.b.i
- *
- * The only (standard) case where the 'this' binding is non-null is when
- * (1) the variable is found in an object environment record, and
- * (2) that object environment record is a 'with' block.
- *
- */
-
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_uint_fast_t idx;
- duk_tval *tv1;
- duk_hstring *name;
-
- tv1 = DUK__REGCONSTP(b);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
- act = thr->callstack + thr->callstack_top - 1;
- (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
-
- /* Note: target registers a and a+1 may overlap with DUK__REGCONSTP(b)
- * and DUK__REGCONSTP(c). Careful here.
- */
-
- idx = (duk_uint_fast_t) DUK_DEC_A(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_CSVARI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + 2 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("CSVAR out of bounds");
- }
-#endif
-
- duk_replace(ctx, (duk_idx_t) (idx + 1)); /* 'this' binding */
- duk_replace(ctx, (duk_idx_t) idx); /* variable value (function, we hope, not checked here) */
- break;
- }
-
- case DUK_OP_CLOSURE: {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_hcompiledfunction *fun;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_hobject *fun_temp;
-
- /* A -> target reg
- * BC -> inner function index
- */
-
- DUK_DDD(DUK_DDDPRINT("CLOSURE to target register %ld, fnum %ld (count %ld)",
- (long) a, (long) bc, (long) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN())));
-
- DUK_ASSERT_DISABLE(bc >= 0); /* unsigned */
- DUK_ASSERT((duk_uint_t) bc < (duk_uint_t) DUK_HCOMPILEDFUNCTION_GET_FUNCS_COUNT(thr->heap, DUK__FUN()));
-
- act = thr->callstack + thr->callstack_top - 1;
- fun = (duk_hcompiledfunction *) DUK_ACT_GET_FUNC(act);
- fun_temp = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, fun)[bc];
- DUK_ASSERT(fun_temp != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(fun_temp));
-
- DUK_DDD(DUK_DDDPRINT("CLOSURE: function template is: %p -> %!O",
- (void *) fun_temp, (duk_heaphdr *) fun_temp));
-
- if (act->lex_env == NULL) {
- DUK_ASSERT(act->var_env == NULL);
- duk_js_init_activation_environment_records_delayed(thr, act);
- }
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
-
- /* functions always have a NEWENV flag, i.e. they get a
- * new variable declaration environment, so only lex_env
- * matters here.
- */
- duk_js_push_closure(thr,
- (duk_hcompiledfunction *) fun_temp,
- act->var_env,
- act->lex_env,
- 1 /*add_auto_proto*/);
- duk_replace(ctx, (duk_idx_t) a);
-
- break;
- }
-
- case DUK_OP_GETPROP: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_bool_t rc;
-
- /* A -> target reg
- * B -> object reg/const (may be const e.g. in "'foo'[1]")
- * C -> key reg/const
- */
-
- tv_obj = DUK__REGCONSTP(b);
- tv_key = DUK__REGCONSTP(c);
- DUK_DDD(DUK_DDDPRINT("GETPROP: a=%ld obj=%!T, key=%!T",
- (long) a,
- (duk_tval *) DUK__REGCONSTP(b),
- (duk_tval *) DUK__REGCONSTP(c)));
- rc = duk_hobject_getprop(thr, tv_obj, tv_key); /* -> [val] */
- DUK_UNREF(rc); /* ignore */
- DUK_DDD(DUK_DDDPRINT("GETPROP --> %!T",
- (duk_tval *) duk_get_tval(ctx, -1)));
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
-
- duk_replace(ctx, (duk_idx_t) a); /* val */
- break;
- }
-
- case DUK_OP_PUTPROP: {
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_tval *tv_val;
- duk_bool_t rc;
-
- /* A -> object reg
- * B -> key reg/const
- * C -> value reg/const
- *
- * Note: intentional difference to register arrangement
- * of e.g. GETPROP; 'A' must contain a register-only value.
- */
-
- tv_obj = DUK__REGP(a);
- tv_key = DUK__REGCONSTP(b);
- tv_val = DUK__REGCONSTP(c);
- DUK_DDD(DUK_DDDPRINT("PUTPROP: obj=%!T, key=%!T, val=%!T",
- (duk_tval *) DUK__REGP(a),
- (duk_tval *) DUK__REGCONSTP(b),
- (duk_tval *) DUK__REGCONSTP(c)));
- rc = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, DUK__STRICT());
- DUK_UNREF(rc); /* ignore */
- DUK_DDD(DUK_DDDPRINT("PUTPROP --> obj=%!T, key=%!T, val=%!T",
- (duk_tval *) DUK__REGP(a),
- (duk_tval *) DUK__REGCONSTP(b),
- (duk_tval *) DUK__REGCONSTP(c)));
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
- tv_val = NULL; /* invalidated */
-
- break;
- }
-
- case DUK_OP_DELPROP: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_bool_t rc;
-
- /* A -> result reg
- * B -> object reg
- * C -> key reg/const
- */
-
- tv_obj = DUK__REGP(b);
- tv_key = DUK__REGCONSTP(c);
- rc = duk_hobject_delprop(thr, tv_obj, tv_key, DUK__STRICT());
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
-
- duk_push_boolean(ctx, rc);
- duk_replace(ctx, (duk_idx_t) a); /* result */
- break;
- }
-
- case DUK_OP_CSPROP:
- case DUK_OP_CSPROPI: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_uint_fast_t idx;
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_bool_t rc;
-
- /* E5 Section 11.2.3, step 6.a.i */
- /* E5 Section 10.4.3 */
-
- /* XXX: allow object to be a const, e.g. in 'foo'.toString()?
- * On the other hand, DUK_REGCONSTP() is slower and generates
- * more code.
- */
-
- tv_obj = DUK__REGP(b);
- tv_key = DUK__REGCONSTP(c);
- rc = duk_hobject_getprop(thr, tv_obj, tv_key); /* -> [val] */
- DUK_UNREF(rc); /* unused */
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
-
- /* Note: target registers a and a+1 may overlap with DUK__REGP(b)
- * and DUK__REGCONSTP(c). Careful here.
- */
-
- idx = (duk_uint_fast_t) DUK_DEC_A(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_CSPROPI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + 2 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("CSPROP out of bounds");
- }
-#endif
-
- duk_push_tval(ctx, DUK__REGP(b)); /* [ ... val obj ] */
- duk_replace(ctx, (duk_idx_t) (idx + 1)); /* 'this' binding */
- duk_replace(ctx, (duk_idx_t) idx); /* val */
- break;
- }
-
- case DUK_OP_ADD:
- case DUK_OP_SUB:
- case DUK_OP_MUL:
- case DUK_OP_DIV:
- case DUK_OP_MOD: {
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_small_uint_fast_t op = DUK_DEC_OP(ins);
-
- if (op == DUK_OP_ADD) {
- /*
- * Handling DUK_OP_ADD this way is more compact (experimentally)
- * than a separate case with separate argument decoding.
- */
- duk__vm_arith_add(thr, DUK__REGCONSTP(b), DUK__REGCONSTP(c), a);
- } else {
- duk__vm_arith_binary_op(thr, DUK__REGCONSTP(b), DUK__REGCONSTP(c), a, op);
- }
- break;
- }
-
- case DUK_OP_BAND:
- case DUK_OP_BOR:
- case DUK_OP_BXOR:
- case DUK_OP_BASL:
- case DUK_OP_BLSR:
- case DUK_OP_BASR: {
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_small_uint_fast_t op = DUK_DEC_OP(ins);
-
- duk__vm_bitwise_binary_op(thr, DUK__REGCONSTP(b), DUK__REGCONSTP(c), a, op);
- break;
- }
-
- case DUK_OP_EQ:
- case DUK_OP_NEQ: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* E5 Sections 11.9.1, 11.9.3 */
- tmp = duk_js_equals(thr, DUK__REGCONSTP(b), DUK__REGCONSTP(c));
- if (DUK_DEC_OP(ins) == DUK_OP_NEQ) {
- tmp = !tmp;
- }
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_SEQ:
- case DUK_OP_SNEQ: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* E5 Sections 11.9.1, 11.9.3 */
- tmp = duk_js_strict_equals(DUK__REGCONSTP(b), DUK__REGCONSTP(c));
- if (DUK_DEC_OP(ins) == DUK_OP_SNEQ) {
- tmp = !tmp;
- }
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- /* Note: combining comparison ops must be done carefully because
- * of uncomparable values (NaN): it's not necessarily true that
- * (x >= y) === !(x < y). Also, evaluation order matters, and
- * although it would only seem to affect the compiler this is
- * actually not the case, because there are also run-time coercions
- * of the arguments (with potential side effects).
- *
- * XXX: can be combined; check code size.
- */
-
- case DUK_OP_GT: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* x > y --> y < x */
- tmp = duk_js_compare_helper(thr,
- DUK__REGCONSTP(c), /* y */
- DUK__REGCONSTP(b), /* x */
- 0); /* flags */
-
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_GE: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* x >= y --> not (x < y) */
- tmp = duk_js_compare_helper(thr,
- DUK__REGCONSTP(b), /* x */
- DUK__REGCONSTP(c), /* y */
- DUK_COMPARE_FLAG_EVAL_LEFT_FIRST |
- DUK_COMPARE_FLAG_NEGATE); /* flags */
-
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_LT: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* x < y */
- tmp = duk_js_compare_helper(thr,
- DUK__REGCONSTP(b), /* x */
- DUK__REGCONSTP(c), /* y */
- DUK_COMPARE_FLAG_EVAL_LEFT_FIRST); /* flags */
-
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_LE: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- /* x <= y --> not (x > y) --> not (y < x) */
- tmp = duk_js_compare_helper(thr,
- DUK__REGCONSTP(c), /* y */
- DUK__REGCONSTP(b), /* x */
- DUK_COMPARE_FLAG_NEGATE); /* flags */
-
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_IF: {
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_bool_t tmp;
-
- tmp = duk_js_toboolean(DUK__REGCONSTP(b));
- if (tmp == (duk_bool_t) a) {
- /* if boolean matches A, skip next inst */
- curr_pc++;
- } else {
- ;
- }
- break;
- }
-
- case DUK_OP_JUMP: {
- duk_int_fast_t abc = DUK_DEC_ABC(ins);
-
- curr_pc += abc - DUK_BC_JUMP_BIAS;
- break;
- }
-
- case DUK_OP_RETURN: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- /* duk_small_uint_fast_t c = DUK_DEC_C(ins); */
- duk_small_uint_t ret_result;
-
- /* A -> flags
- * B -> return value reg/const
- * C -> currently unused
- */
-
- DUK__SYNC_AND_NULL_CURR_PC();
-
- /* duk__handle_return() is guaranteed never to throw, except
- * for potential out-of-memory situations which will then
- * propagate out of the executor longjmp handler.
- */
-
- if (a & DUK_BC_RETURN_FLAG_HAVE_RETVAL) {
- duk_push_tval(ctx, DUK__REGCONSTP(b));
- } else {
- duk_push_undefined(ctx);
- }
- ret_result = duk__handle_return(thr,
- entry_thread,
- entry_callstack_top);
- if (ret_result == DUK__RETHAND_RESTART) {
- goto restart_execution;
- }
- DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED);
-
- DUK_DDD(DUK_DDDPRINT("exiting executor after RETURN handling"));
- return;
- }
-
- case DUK_OP_CALL:
- case DUK_OP_CALLI: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_uint_fast_t idx;
- duk_small_uint_t call_flags;
- duk_small_uint_t flag_tailcall;
- duk_small_uint_t flag_evalcall;
- duk_tval *tv_func;
- duk_hobject *obj_func;
- duk_bool_t setup_rc;
- duk_idx_t num_stack_args;
-#if !defined(DUK_USE_EXEC_FUN_LOCAL)
- duk_hcompiledfunction *fun;
-#endif
-
- /* A -> flags
- * B -> base register for call (base -> func, base+1 -> this, base+2 -> arg1 ... base+2+N-1 -> argN)
- * (for DUK_OP_CALLI, 'b' is indirect)
- * C -> nargs
- */
-
- /* these are not necessarily 0 or 1 (may be other non-zero), that's ok */
- flag_tailcall = (a & DUK_BC_CALL_FLAG_TAILCALL);
- flag_evalcall = (a & DUK_BC_CALL_FLAG_EVALCALL);
-
- idx = (duk_uint_fast_t) DUK_DEC_B(ins);
- if (DUK_DEC_OP(ins) == DUK_OP_CALLI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (!duk_is_valid_index(ctx, (duk_idx_t) idx)) {
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("CALL out of bounds");
- }
-#endif
-
- /*
- * To determine whether to use an optimized Ecmascript-to-Ecmascript
- * call, we need to know whether the final, non-bound function is an
- * Ecmascript function.
- *
- * This is now implemented so that we start to do an ecma-to-ecma call
- * setup which will resolve the bound chain as the first thing. If the
- * final function is not eligible, the return value indicates that the
- * ecma-to-ecma call is not possible. The setup will overwrite the call
- * target at DUK__REGP(idx) with the final, non-bound function (which
- * may be a lightfunc), and fudge arguments if necessary.
- *
- * XXX: If an ecma-to-ecma call is not possible, this initial call
- * setup will do bound function chain resolution but won't do the
- * "effective this binding" resolution which is quite confusing.
- * Perhaps add a helper for doing bound function and effective this
- * binding resolution - and call that explicitly? Ecma-to-ecma call
- * setup and normal function handling can then assume this prestep has
- * been done by the caller.
- */
-
- duk_set_top(ctx, (duk_idx_t) (idx + c + 2)); /* [ ... func this arg1 ... argN ] */
-
- call_flags = 0;
- if (flag_tailcall) {
- /* We request a tail call, but in some corner cases
- * call handling can decide that a tail call is
- * actually not possible.
- * See: test-bug-tailcall-preventyield-assert.c.
- */
- call_flags |= DUK_CALL_FLAG_IS_TAILCALL;
- }
-
- /* Compared to duk_handle_call():
- * - protected call: never
- * - ignore recursion limit: never
- */
- num_stack_args = c;
- setup_rc = duk_handle_ecma_call_setup(thr,
- num_stack_args,
- call_flags);
-
- if (setup_rc) {
- /* Ecma-to-ecma call possible, may or may not be a tail call.
- * Avoid C recursion by being clever.
- */
- DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call setup possible, restart execution"));
- /* curr_pc synced by duk_handle_ecma_call_setup() */
- goto restart_execution;
- }
- DUK_ASSERT(thr->ptr_curr_pc != NULL); /* restored if ecma-to-ecma setup fails */
-
- DUK_DDD(DUK_DDDPRINT("ecma-to-ecma call not possible, target is native (may be lightfunc)"));
-
- /* Recompute argument count: bound function handling may have shifted. */
- num_stack_args = duk_get_top(ctx) - (idx + 2);
- DUK_DDD(DUK_DDDPRINT("recomputed arg count: %ld\n", (long) num_stack_args));
-
- tv_func = DUK__REGP(idx); /* Relookup if relocated */
- if (DUK_TVAL_IS_LIGHTFUNC(tv_func)) {
-
- call_flags = 0; /* not protected, respect reclimit, not constructor */
-
- /* There is no eval() special handling here: eval() is never
- * automatically converted to a lightfunc.
- */
- DUK_ASSERT(DUK_TVAL_GET_LIGHTFUNC_FUNCPTR(tv_func) != duk_bi_global_object_eval);
-
- duk_handle_call_unprotected(thr,
- num_stack_args,
- call_flags);
-
- /* duk_js_call.c is required to restore the stack reserve
- * so we only need to reset the top.
- */
-#if !defined(DUK_USE_EXEC_FUN_LOCAL)
- fun = DUK__FUN();
-#endif
- duk_set_top(ctx, (duk_idx_t) fun->nregs);
-
- /* No need to reinit setjmp() catchpoint, as call handling
- * will store and restore our state.
- */
- } else {
- /* Call setup checks callability. */
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_func));
- obj_func = DUK_TVAL_GET_OBJECT(tv_func);
- DUK_ASSERT(obj_func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(obj_func));
-
- /*
- * Other cases, use C recursion.
- *
- * If a tail call was requested we ignore it and execute a normal call.
- * Since Duktape 0.11.0 the compiler emits a RETURN opcode even after
- * a tail call to avoid test-bug-tailcall-thread-yield-resume.js.
- *
- * Direct eval call: (1) call target (before following bound function
- * chain) is the built-in eval() function, and (2) call was made with
- * the identifier 'eval'.
- */
-
- call_flags = 0; /* not protected, respect reclimit, not constructor */
-
- if (DUK_HOBJECT_IS_NATIVEFUNCTION(obj_func) &&
- ((duk_hnativefunction *) obj_func)->func == duk_bi_global_object_eval) {
- if (flag_evalcall) {
- DUK_DDD(DUK_DDDPRINT("call target is eval, call identifier was 'eval' -> direct eval"));
- call_flags |= DUK_CALL_FLAG_DIRECT_EVAL;
- } else {
- DUK_DDD(DUK_DDDPRINT("call target is eval, call identifier was not 'eval' -> indirect eval"));
- }
- }
-
- duk_handle_call_unprotected(thr,
- num_stack_args,
- call_flags);
-
- /* duk_js_call.c is required to restore the stack reserve
- * so we only need to reset the top.
- */
-#if !defined(DUK_USE_EXEC_FUN_LOCAL)
- fun = DUK__FUN();
-#endif
- duk_set_top(ctx, (duk_idx_t) fun->nregs);
-
- /* No need to reinit setjmp() catchpoint, as call handling
- * will store and restore our state.
- */
- }
-
- /* When debugger is enabled, we need to recheck the activation
- * status after returning. This is now handled by call handling
- * and heap->dbg_force_restart.
- */
- break;
- }
-
- case DUK_OP_TRYCATCH: {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_catcher *cat;
- duk_tval *tv1;
- duk_small_uint_fast_t a;
- duk_uint_fast_t bc;
-
- /* A -> flags
- * BC -> reg_catch; base register for two registers used both during
- * trycatch setup and when catch is triggered
- *
- * If DUK_BC_TRYCATCH_FLAG_CATCH_BINDING set:
- * reg_catch + 0: catch binding variable name (string).
- * Automatic declarative environment is established for
- * the duration of the 'catch' clause.
- *
- * If DUK_BC_TRYCATCH_FLAG_WITH_BINDING set:
- * reg_catch + 0: with 'target value', which is coerced to
- * an object and then used as a bindind object for an
- * environment record. The binding is initialized here, for
- * the 'try' clause.
- *
- * Note that a TRYCATCH generated for a 'with' statement has no
- * catch or finally parts.
- */
-
- /* XXX: TRYCATCH handling should be reworked to avoid creating
- * an explicit scope unless it is actually needed (e.g. function
- * instances or eval is executed inside the catch block). This
- * rework is not trivial because the compiler doesn't have an
- * intermediate representation. When the rework is done, the
- * opcode format can also be made more straightforward.
- */
-
- /* XXX: side effect handling is quite awkward here */
-
- DUK_DDD(DUK_DDDPRINT("TRYCATCH: reg_catch=%ld, have_catch=%ld, "
- "have_finally=%ld, catch_binding=%ld, with_binding=%ld (flags=0x%02lx)",
- (long) DUK_DEC_BC(ins),
- (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH ? 1 : 0),
- (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY ? 1 : 0),
- (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_CATCH_BINDING ? 1 : 0),
- (long) (DUK_DEC_A(ins) & DUK_BC_TRYCATCH_FLAG_WITH_BINDING ? 1 : 0),
- (unsigned long) DUK_DEC_A(ins)));
-
- a = DUK_DEC_A(ins);
- bc = DUK_DEC_BC(ins);
-
- act = thr->callstack + thr->callstack_top - 1;
- DUK_ASSERT(thr->callstack_top >= 1);
-
- /* 'with' target must be created first, in case we run out of memory */
- /* XXX: refactor out? */
-
- if (a & DUK_BC_TRYCATCH_FLAG_WITH_BINDING) {
- DUK_DDD(DUK_DDDPRINT("need to initialize a with binding object"));
-
- if (act->lex_env == NULL) {
- DUK_ASSERT(act->var_env == NULL);
- DUK_DDD(DUK_DDDPRINT("delayed environment initialization"));
-
- /* must relookup act in case of side effects */
- duk_js_init_activation_environment_records_delayed(thr, act);
- act = thr->callstack + thr->callstack_top - 1;
- DUK_UNREF(act); /* 'act' is no longer accessed, scanbuild fix */
- }
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
-
- (void) duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_OBJENV),
- -1); /* no prototype, updated below */
-
- duk_push_tval(ctx, DUK__REGP(bc));
- duk_to_object(ctx, -1);
- duk_dup(ctx, -1);
-
- /* [ ... env target ] */
- /* [ ... env target target ] */
-
- duk_xdef_prop_stridx(thr, -3, DUK_STRIDX_INT_TARGET, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx(thr, -2, DUK_STRIDX_INT_THIS, DUK_PROPDESC_FLAGS_NONE); /* always provideThis=true */
-
- /* [ ... env ] */
-
- DUK_DDD(DUK_DDDPRINT("environment for with binding: %!iT",
- (duk_tval *) duk_get_tval(ctx, -1)));
- }
-
- /* allocate catcher and populate it (should be atomic) */
-
- duk_hthread_catchstack_grow(thr);
- cat = thr->catchstack + thr->catchstack_top;
- DUK_ASSERT(thr->catchstack_top + 1 <= thr->catchstack_size);
- thr->catchstack_top++;
-
- cat->flags = DUK_CAT_TYPE_TCF;
- cat->h_varname = NULL;
-
- if (a & DUK_BC_TRYCATCH_FLAG_HAVE_CATCH) {
- cat->flags |= DUK_CAT_FLAG_CATCH_ENABLED;
- }
- if (a & DUK_BC_TRYCATCH_FLAG_HAVE_FINALLY) {
- cat->flags |= DUK_CAT_FLAG_FINALLY_ENABLED;
- }
- if (a & DUK_BC_TRYCATCH_FLAG_CATCH_BINDING) {
- DUK_DDD(DUK_DDDPRINT("catch binding flag set to catcher"));
- cat->flags |= DUK_CAT_FLAG_CATCH_BINDING_ENABLED;
- tv1 = DUK__REGP(bc);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
-
- /* borrowed reference; although 'tv1' comes from a register,
- * its value was loaded using LDCONST so the constant will
- * also exist and be reachable.
- */
- cat->h_varname = DUK_TVAL_GET_STRING(tv1);
- } else if (a & DUK_BC_TRYCATCH_FLAG_WITH_BINDING) {
- /* env created above to stack top */
- duk_hobject *new_env;
-
- DUK_DDD(DUK_DDDPRINT("lexenv active flag set to catcher"));
- cat->flags |= DUK_CAT_FLAG_LEXENV_ACTIVE;
-
- DUK_DDD(DUK_DDDPRINT("activating object env: %!iT",
- (duk_tval *) duk_get_tval(ctx, -1)));
- DUK_ASSERT(act->lex_env != NULL);
- new_env = DUK_GET_HOBJECT_NEGIDX(ctx, -1);
- DUK_ASSERT(new_env != NULL);
-
- act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, new_env, act->lex_env); /* side effects */
-
- act = thr->callstack + thr->callstack_top - 1; /* relookup (side effects) */
- act->lex_env = new_env;
- DUK_HOBJECT_INCREF(thr, new_env);
- duk_pop(ctx);
- } else {
- ;
- }
-
- /* Registers 'bc' and 'bc + 1' are written in longjmp handling
- * and if their previous values (which are temporaries) become
- * unreachable -and- have a finalizer, there'll be a function
- * call during error handling which is not supported now (GH-287).
- * Ensure that both 'bc' and 'bc + 1' have primitive values to
- * guarantee no finalizer calls in error handling. Scrubbing also
- * ensures finalizers for the previous values run here rather than
- * later. Error handling related values are also written to 'bc'
- * and 'bc + 1' but those values never become unreachable during
- * error handling, so there's no side effect problem even if the
- * error value has a finalizer.
- */
- duk_to_undefined(ctx, bc);
- duk_to_undefined(ctx, bc + 1);
-
- cat = thr->catchstack + thr->catchstack_top - 1; /* relookup (side effects) */
- cat->callstack_index = thr->callstack_top - 1;
- cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */
- cat->idx_base = (duk_size_t) (thr->valstack_bottom - thr->valstack) + bc;
-
- DUK_DDD(DUK_DDDPRINT("TRYCATCH catcher: flags=0x%08lx, callstack_index=%ld, pc_base=%ld, "
- "idx_base=%ld, h_varname=%!O",
- (unsigned long) cat->flags, (long) cat->callstack_index,
- (long) cat->pc_base, (long) cat->idx_base, (duk_heaphdr *) cat->h_varname));
-
- curr_pc += 2; /* skip jump slots */
- break;
- }
-
- /* Pre/post inc/dec for register variables, important for loops. */
- case DUK_OP_PREINCR:
- case DUK_OP_PREDECR:
- case DUK_OP_POSTINCR:
- case DUK_OP_POSTDECR: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1, *tv2;
- duk_double_t x, y, z;
-
- /* Two lowest bits of opcode are used to distinguish
- * variants. Bit 0 = inc(0)/dec(1), bit 1 = pre(0)/post(1).
- */
- DUK_ASSERT((DUK_OP_PREINCR & 0x03) == 0x00);
- DUK_ASSERT((DUK_OP_PREDECR & 0x03) == 0x01);
- DUK_ASSERT((DUK_OP_POSTINCR & 0x03) == 0x02);
- DUK_ASSERT((DUK_OP_POSTDECR & 0x03) == 0x03);
-
- tv1 = DUK__REGP(bc);
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv1)) {
- duk_int64_t x_fi, y_fi, z_fi;
- x_fi = DUK_TVAL_GET_FASTINT(tv1);
- if (ins & DUK_ENC_OP(0x01)) {
- if (x_fi == DUK_FASTINT_MIN) {
- goto skip_fastint;
- }
- y_fi = x_fi - 1;
- } else {
- if (x_fi == DUK_FASTINT_MAX) {
- goto skip_fastint;
- }
- y_fi = x_fi + 1;
- }
-
- DUK_TVAL_SET_FASTINT(tv1, y_fi); /* no need for refcount update */
-
- tv2 = DUK__REGP(a);
- z_fi = (ins & DUK_ENC_OP(0x02)) ? x_fi : y_fi;
- DUK_TVAL_SET_FASTINT_UPDREF(thr, tv2, z_fi); /* side effects */
- break;
- }
- skip_fastint:
-#endif
- if (DUK_TVAL_IS_NUMBER(tv1)) {
- /* Fast path for the case where the register
- * is a number (e.g. loop counter).
- */
-
- x = DUK_TVAL_GET_NUMBER(tv1);
- if (ins & DUK_ENC_OP(0x01)) {
- y = x - 1.0;
- } else {
- y = x + 1.0;
- }
-
- DUK_TVAL_SET_NUMBER(tv1, y); /* no need for refcount update */
- } else {
- x = duk_to_number(ctx, bc);
-
- if (ins & DUK_ENC_OP(0x01)) {
- y = x - 1.0;
- } else {
- y = x + 1.0;
- }
-
- duk_push_number(ctx, y);
- duk_replace(ctx, bc);
- }
-
- tv2 = DUK__REGP(a);
- z = (ins & DUK_ENC_OP(0x02)) ? x : y;
- DUK_TVAL_SET_NUMBER_UPDREF(thr, tv2, z); /* side effects */
- break;
- }
-
- /* Preinc/predec for var-by-name, slow path. */
- case DUK_OP_PREINCV:
- case DUK_OP_PREDECV:
- case DUK_OP_POSTINCV:
- case DUK_OP_POSTDECV: {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_double_t x, y;
- duk_tval *tv1;
- duk_hstring *name;
-
- /* Two lowest bits of opcode are used to distinguish
- * variants. Bit 0 = inc(0)/dec(1), bit 1 = pre(0)/post(1).
- */
- DUK_ASSERT((DUK_OP_PREINCV & 0x03) == 0x00);
- DUK_ASSERT((DUK_OP_PREDECV & 0x03) == 0x01);
- DUK_ASSERT((DUK_OP_POSTINCV & 0x03) == 0x02);
- DUK_ASSERT((DUK_OP_POSTDECV & 0x03) == 0x03);
-
- tv1 = DUK__CONSTP(bc);
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv1));
- name = DUK_TVAL_GET_STRING(tv1);
- DUK_ASSERT(name != NULL);
- act = thr->callstack + thr->callstack_top - 1;
- (void) duk_js_getvar_activation(thr, act, name, 1 /*throw*/); /* -> [... val this] */
-
- /* XXX: fastint fast path would be very useful here */
-
- x = duk_to_number(ctx, -2);
- duk_pop_2(ctx);
- if (ins & DUK_ENC_OP(0x01)) {
- y = x - 1.0;
- } else {
- y = x + 1.0;
- }
-
- duk_push_number(ctx, y);
- tv1 = DUK_GET_TVAL_NEGIDX(ctx, -1);
- DUK_ASSERT(tv1 != NULL);
- duk_js_putvar_activation(thr, act, name, tv1, DUK__STRICT());
- duk_pop(ctx);
-
- duk_push_number(ctx, (ins & DUK_ENC_OP(0x02)) ? x : y);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- /* Preinc/predec for object properties. */
- case DUK_OP_PREINCP:
- case DUK_OP_PREDECP:
- case DUK_OP_POSTINCP:
- case DUK_OP_POSTDECP: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t a = DUK_DEC_A(ins);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_tval *tv_obj;
- duk_tval *tv_key;
- duk_tval *tv_val;
- duk_bool_t rc;
- duk_double_t x, y;
-
- /* A -> target reg
- * B -> object reg/const (may be const e.g. in "'foo'[1]")
- * C -> key reg/const
- */
-
- /* Two lowest bits of opcode are used to distinguish
- * variants. Bit 0 = inc(0)/dec(1), bit 1 = pre(0)/post(1).
- */
- DUK_ASSERT((DUK_OP_PREINCP & 0x03) == 0x00);
- DUK_ASSERT((DUK_OP_PREDECP & 0x03) == 0x01);
- DUK_ASSERT((DUK_OP_POSTINCP & 0x03) == 0x02);
- DUK_ASSERT((DUK_OP_POSTDECP & 0x03) == 0x03);
-
- tv_obj = DUK__REGCONSTP(b);
- tv_key = DUK__REGCONSTP(c);
- rc = duk_hobject_getprop(thr, tv_obj, tv_key); /* -> [val] */
- DUK_UNREF(rc); /* ignore */
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
-
- x = duk_to_number(ctx, -1);
- duk_pop(ctx);
- if (ins & DUK_ENC_OP(0x01)) {
- y = x - 1.0;
- } else {
- y = x + 1.0;
- }
-
- duk_push_number(ctx, y);
- tv_val = DUK_GET_TVAL_NEGIDX(ctx, -1);
- DUK_ASSERT(tv_val != NULL);
- tv_obj = DUK__REGCONSTP(b);
- tv_key = DUK__REGCONSTP(c);
- rc = duk_hobject_putprop(thr, tv_obj, tv_key, tv_val, DUK__STRICT());
- DUK_UNREF(rc); /* ignore */
- tv_obj = NULL; /* invalidated */
- tv_key = NULL; /* invalidated */
- duk_pop(ctx);
-
- duk_push_number(ctx, (ins & DUK_ENC_OP(0x02)) ? x : y);
- duk_replace(ctx, (duk_idx_t) a);
- break;
- }
-
- case DUK_OP_EXTRA: {
- /* XXX: shared decoding of 'b' and 'c'? */
-
- duk_small_uint_fast_t extraop = DUK_DEC_A(ins);
- switch ((int) extraop) {
- /* XXX: switch cast? */
-
- case DUK_EXTRAOP_NOP: {
- /* nop */
- break;
- }
-
- case DUK_EXTRAOP_INVALID: {
- DUK_ERROR_FMT1(thr, DUK_ERR_INTERNAL_ERROR, "INVALID opcode (%ld)", (long) DUK_DEC_BC(ins));
- break;
- }
-
- case DUK_EXTRAOP_LDTHIS: {
- /* Note: 'this' may be bound to any value, not just an object */
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1, *tv2;
-
- tv1 = DUK__REGP(bc);
- tv2 = thr->valstack_bottom - 1; /* 'this binding' is just under bottom */
- DUK_ASSERT(tv2 >= thr->valstack);
-
- DUK_DDD(DUK_DDDPRINT("LDTHIS: %!T to r%ld", (duk_tval *) tv2, (long) bc));
-
- DUK_TVAL_SET_TVAL_UPDREF_FAST(thr, tv1, tv2); /* side effects */
- break;
- }
-
- case DUK_EXTRAOP_LDUNDEF: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
-
- tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
- break;
- }
-
- case DUK_EXTRAOP_LDNULL: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
-
- tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_NULL_UPDREF(thr, tv1); /* side effects */
- break;
- }
-
- case DUK_EXTRAOP_LDTRUE:
- case DUK_EXTRAOP_LDFALSE: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
- duk_small_uint_fast_t bval = (extraop == DUK_EXTRAOP_LDTRUE ? 1 : 0);
-
- tv1 = DUK__REGP(bc);
- DUK_TVAL_SET_BOOLEAN_UPDREF(thr, tv1, bval); /* side effects */
- break;
- }
-
- case DUK_EXTRAOP_NEWOBJ: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
-
- duk_push_object(ctx);
- duk_replace(ctx, (duk_idx_t) b);
- break;
- }
-
- case DUK_EXTRAOP_NEWARR: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
-
- duk_push_array(ctx);
- duk_replace(ctx, (duk_idx_t) b);
- break;
- }
-
- case DUK_EXTRAOP_SETALEN: {
- duk_small_uint_fast_t b;
- duk_small_uint_fast_t c;
- duk_tval *tv1;
- duk_hobject *h;
- duk_uint32_t len;
-
- b = DUK_DEC_B(ins); tv1 = DUK__REGP(b);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv1));
- h = DUK_TVAL_GET_OBJECT(tv1);
-
- c = DUK_DEC_C(ins); tv1 = DUK__REGP(c);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
- len = (duk_uint32_t) DUK_TVAL_GET_NUMBER(tv1);
-
- duk_hobject_set_length(thr, h, len);
-
- break;
- }
-
- case DUK_EXTRAOP_TYPEOF: {
- duk_context *ctx = (duk_context *) thr;
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_push_hstring(ctx, duk_js_typeof(thr, DUK__REGP(bc)));
- duk_replace(ctx, (duk_idx_t) bc);
- break;
- }
-
- case DUK_EXTRAOP_TYPEOFID: {
- duk_context *ctx = (duk_context *) thr;
- duk_activation *act;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_hstring *name;
- duk_tval *tv;
-
- /* B -> target register
- * C -> constant index of identifier name
- */
-
- tv = DUK__REGCONSTP(c); /* XXX: this could be a DUK__CONSTP instead */
- DUK_ASSERT(DUK_TVAL_IS_STRING(tv));
- name = DUK_TVAL_GET_STRING(tv);
- act = thr->callstack + thr->callstack_top - 1;
- if (duk_js_getvar_activation(thr, act, name, 0 /*throw*/)) {
- /* -> [... val this] */
- tv = DUK_GET_TVAL_NEGIDX(ctx, -2);
- duk_push_hstring(ctx, duk_js_typeof(thr, tv));
- duk_replace(ctx, (duk_idx_t) b);
- duk_pop_2(ctx);
- } else {
- /* unresolvable, no stack changes */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_LC_UNDEFINED);
- duk_replace(ctx, (duk_idx_t) b);
- }
-
- break;
- }
-
- case DUK_EXTRAOP_INITENUM: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
-
- /*
- * Enumeration semantics come from for-in statement, E5 Section 12.6.4.
- * If called with 'null' or 'undefined', this opcode returns 'null' as
- * the enumerator, which is special cased in NEXTENUM. This simplifies
- * the compiler part
- */
-
- /* B -> register for writing enumerator object
- * C -> value to be enumerated (register)
- */
-
- if (duk_is_null_or_undefined(ctx, (duk_idx_t) c)) {
- duk_push_null(ctx);
- duk_replace(ctx, (duk_idx_t) b);
- } else {
- duk_dup(ctx, (duk_idx_t) c);
- duk_to_object(ctx, -1);
- duk_hobject_enumerator_create(ctx, 0 /*enum_flags*/); /* [ ... val ] --> [ ... enum ] */
- duk_replace(ctx, (duk_idx_t) b);
- }
- break;
- }
-
- case DUK_EXTRAOP_NEXTENUM: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
-
- /*
- * NEXTENUM checks whether the enumerator still has unenumerated
- * keys. If so, the next key is loaded to the target register
- * and the next instruction is skipped. Otherwise the next instruction
- * will be executed, jumping out of the enumeration loop.
- */
-
- /* B -> target register for next key
- * C -> enum register
- */
-
- DUK_DDD(DUK_DDDPRINT("NEXTENUM: b->%!T, c->%!T",
- (duk_tval *) duk_get_tval(ctx, (duk_idx_t) b),
- (duk_tval *) duk_get_tval(ctx, (duk_idx_t) c)));
-
- if (duk_is_object(ctx, (duk_idx_t) c)) {
- /* XXX: assert 'c' is an enumerator */
- duk_dup(ctx, (duk_idx_t) c);
- if (duk_hobject_enumerator_next(ctx, 0 /*get_value*/)) {
- /* [ ... enum ] -> [ ... next_key ] */
- DUK_DDD(DUK_DDDPRINT("enum active, next key is %!T, skip jump slot ",
- (duk_tval *) duk_get_tval(ctx, -1)));
- curr_pc++;
- } else {
- /* [ ... enum ] -> [ ... ] */
- DUK_DDD(DUK_DDDPRINT("enum finished, execute jump slot"));
- duk_push_undefined(ctx);
- }
- duk_replace(ctx, (duk_idx_t) b);
- } else {
- /* 'null' enumerator case -> behave as with an empty enumerator */
- DUK_ASSERT(duk_is_null(ctx, (duk_idx_t) c));
- DUK_DDD(DUK_DDDPRINT("enum is null, execute jump slot"));
- }
- break;
- }
-
- case DUK_EXTRAOP_INITSET:
- case DUK_EXTRAOP_INITSETI:
- case DUK_EXTRAOP_INITGET:
- case DUK_EXTRAOP_INITGETI: {
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t is_set = (extraop == DUK_EXTRAOP_INITSET || extraop == DUK_EXTRAOP_INITSETI);
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_uint_fast_t idx;
-
- /* B -> object register
- * C -> C+0 contains key, C+1 closure (value)
- */
-
- /*
- * INITSET/INITGET are only used to initialize object literal keys.
- * The compiler ensures that there cannot be a previous data property
- * of the same name. It also ensures that setter and getter can only
- * be initialized once (or not at all).
- */
-
- idx = (duk_uint_fast_t) DUK_DEC_C(ins);
- if (extraop == DUK_EXTRAOP_INITSETI || extraop == DUK_EXTRAOP_INITGETI) {
- duk_tval *tv_ind = DUK__REGP(idx);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_ind));
- idx = (duk_uint_fast_t) DUK_TVAL_GET_NUMBER(tv_ind);
- }
-
-#if defined(DUK_USE_EXEC_INDIRECT_BOUND_CHECK)
- if (idx + 2 > (duk_uint_fast_t) duk_get_top(ctx)) {
- /* XXX: use duk_is_valid_index() instead? */
- /* XXX: improve check; check against nregs, not against top */
- DUK__INTERNAL_ERROR("INITSET/INITGET out of bounds");
- }
-#endif
-
- /* XXX: this is now a very unoptimal implementation -- this can be
- * made very simple by direct manipulation of the object internals,
- * given the guarantees above.
- */
-
- duk_push_hobject_bidx(ctx, DUK_BIDX_OBJECT_CONSTRUCTOR);
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_DEFINE_PROPERTY);
- duk_push_undefined(ctx);
- duk_dup(ctx, (duk_idx_t) b);
- duk_dup(ctx, (duk_idx_t) (idx + 0));
- duk_push_object(ctx); /* -> [ Object defineProperty undefined obj key desc ] */
-
- duk_push_true(ctx);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_ENUMERABLE);
- duk_push_true(ctx);
- duk_put_prop_stridx(ctx, -2, DUK_STRIDX_CONFIGURABLE);
- duk_dup(ctx, (duk_idx_t) (idx + 1));
- duk_put_prop_stridx(ctx, -2, (is_set ? DUK_STRIDX_SET : DUK_STRIDX_GET));
-
- DUK_DDD(DUK_DDDPRINT("INITGET/INITSET: obj=%!T, key=%!T, desc=%!T",
- (duk_tval *) duk_get_tval(ctx, -3),
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- duk_call_method(ctx, 3); /* -> [ Object res ] */
- duk_pop_2(ctx);
-
- DUK_DDD(DUK_DDDPRINT("INITGET/INITSET AFTER: obj=%!T",
- (duk_tval *) duk_get_tval(ctx, (duk_idx_t) b)));
- break;
- }
-
- case DUK_EXTRAOP_ENDTRY: {
- duk_catcher *cat;
- duk_tval *tv1;
-
- DUK_ASSERT(thr->catchstack_top >= 1);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->catchstack[thr->catchstack_top - 1].callstack_index == thr->callstack_top - 1);
-
- cat = thr->catchstack + thr->catchstack_top - 1;
-
- DUK_DDD(DUK_DDDPRINT("ENDTRY: clearing catch active flag (regardless of whether it was set or not)"));
- DUK_CAT_CLEAR_CATCH_ENABLED(cat);
-
- if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- DUK_DDD(DUK_DDDPRINT("ENDTRY: finally part is active, jump through 2nd jump slot with 'normal continuation'"));
-
- tv1 = thr->valstack + cat->idx_base;
- DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
- tv1 = NULL;
-
- tv1 = thr->valstack + cat->idx_base + 1;
- DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */
- tv1 = NULL;
-
- DUK_CAT_CLEAR_FINALLY_ENABLED(cat);
- } else {
- DUK_DDD(DUK_DDDPRINT("ENDTRY: no finally part, dismantle catcher, jump through 2nd jump slot (to end of statement)"));
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
- /* no need to unwind callstack */
- }
-
- curr_pc = cat->pc_base + 1;
- break;
- }
-
- case DUK_EXTRAOP_ENDCATCH: {
- duk_activation *act;
- duk_catcher *cat;
- duk_tval *tv1;
-
- DUK_ASSERT(thr->catchstack_top >= 1);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->catchstack[thr->catchstack_top - 1].callstack_index == thr->callstack_top - 1);
-
- cat = thr->catchstack + thr->catchstack_top - 1;
- DUK_ASSERT(!DUK_CAT_HAS_CATCH_ENABLED(cat)); /* cleared before entering catch part */
-
- act = thr->callstack + thr->callstack_top - 1;
-
- if (DUK_CAT_HAS_LEXENV_ACTIVE(cat)) {
- duk_hobject *prev_env;
-
- /* 'with' binding has no catch clause, so can't be here unless a normal try-catch */
- DUK_ASSERT(DUK_CAT_HAS_CATCH_BINDING_ENABLED(cat));
- DUK_ASSERT(act->lex_env != NULL);
-
- DUK_DDD(DUK_DDDPRINT("ENDCATCH: popping catcher part lexical environment"));
-
- prev_env = act->lex_env;
- DUK_ASSERT(prev_env != NULL);
- act->lex_env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, prev_env);
- DUK_CAT_CLEAR_LEXENV_ACTIVE(cat);
- DUK_HOBJECT_DECREF(thr, prev_env); /* side effects */
- }
-
- if (DUK_CAT_HAS_FINALLY_ENABLED(cat)) {
- DUK_DDD(DUK_DDDPRINT("ENDCATCH: finally part is active, jump through 2nd jump slot with 'normal continuation'"));
-
- tv1 = thr->valstack + cat->idx_base;
- DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv1); /* side effects */
- tv1 = NULL;
-
- tv1 = thr->valstack + cat->idx_base + 1;
- DUK_ASSERT(tv1 >= thr->valstack && tv1 < thr->valstack_top);
- DUK_TVAL_SET_FASTINT_U32_UPDREF(thr, tv1, (duk_uint32_t) DUK_LJ_TYPE_NORMAL); /* side effects */
- tv1 = NULL;
-
- DUK_CAT_CLEAR_FINALLY_ENABLED(cat);
- } else {
- DUK_DDD(DUK_DDDPRINT("ENDCATCH: no finally part, dismantle catcher, jump through 2nd jump slot (to end of statement)"));
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
- /* no need to unwind callstack */
- }
-
- curr_pc = cat->pc_base + 1;
- break;
- }
-
- case DUK_EXTRAOP_ENDFIN: {
- duk_context *ctx = (duk_context *) thr;
- duk_catcher *cat;
- duk_tval *tv1;
- duk_small_uint_t cont_type;
- duk_small_uint_t ret_result;
-
- /* Sync and NULL early. */
- DUK__SYNC_AND_NULL_CURR_PC();
-
- DUK_ASSERT(thr->catchstack_top >= 1);
- DUK_ASSERT(thr->callstack_top >= 1);
- DUK_ASSERT(thr->catchstack[thr->catchstack_top - 1].callstack_index == thr->callstack_top - 1);
-
- cat = thr->catchstack + thr->catchstack_top - 1;
-
- /* CATCH flag may be enabled or disabled here; it may be enabled if
- * the statement has a catch block but the try block does not throw
- * an error.
- */
- DUK_ASSERT(!DUK_CAT_HAS_FINALLY_ENABLED(cat)); /* cleared before entering finally */
- /* XXX: assert idx_base */
-
- DUK_DDD(DUK_DDDPRINT("ENDFIN: completion value=%!T, type=%!T",
- (duk_tval *) (thr->valstack + cat->idx_base + 0),
- (duk_tval *) (thr->valstack + cat->idx_base + 1)));
-
- tv1 = thr->valstack + cat->idx_base + 1; /* type */
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
- cont_type = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1);
-
- switch (cont_type) {
- case DUK_LJ_TYPE_NORMAL: {
- DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'normal' (non-abrupt) completion -> "
- "dismantle catcher, resume execution after ENDFIN"));
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
- /* no need to unwind callstack */
- goto restart_execution;
- }
- case DUK_LJ_TYPE_RETURN: {
- DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with 'return' complation -> dismantle "
- "catcher, handle return, lj.value1=%!T", thr->valstack + cat->idx_base));
-
- /* Not necessary to unwind catchstack: return handling will
- * do it. The finally flag of 'cat' is no longer set. The
- * catch flag may be set, but it's not checked by return handling.
- */
- DUK_ASSERT(!DUK_CAT_HAS_FINALLY_ENABLED(cat)); /* cleared before entering finally */
-#if 0
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
-#endif
-
- duk_push_tval(ctx, thr->valstack + cat->idx_base);
- ret_result = duk__handle_return(thr,
- entry_thread,
- entry_callstack_top);
- if (ret_result == DUK__RETHAND_RESTART) {
- goto restart_execution;
- }
- DUK_ASSERT(ret_result == DUK__RETHAND_FINISHED);
-
- DUK_DDD(DUK_DDDPRINT("exiting executor after ENDFIN and RETURN (pseudo) longjmp type"));
- return;
- }
- case DUK_LJ_TYPE_BREAK:
- case DUK_LJ_TYPE_CONTINUE: {
- duk_uint_t label_id;
- duk_small_uint_t lj_type;
-
- /* Not necessary to unwind catchstack: break/continue
- * handling will do it. The finally flag of 'cat' is
- * no longer set. The catch flag may be set, but it's
- * not checked by break/continue handling.
- */
-#if 0
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
-#endif
-
- tv1 = thr->valstack + cat->idx_base;
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv1));
-#if defined(DUK_USE_FASTINT)
- DUK_ASSERT(DUK_TVAL_IS_FASTINT(tv1));
- label_id = (duk_small_uint_t) DUK_TVAL_GET_FASTINT_U32(tv1);
-#else
- label_id = (duk_small_uint_t) DUK_TVAL_GET_NUMBER(tv1);
-#endif
- lj_type = cont_type;
- duk__handle_break_or_continue(thr, label_id, lj_type);
- goto restart_execution;
- }
- default: {
- DUK_DDD(DUK_DDDPRINT("ENDFIN: finally part finishing with abrupt completion, lj_type=%ld -> "
- "dismantle catcher, re-throw error",
- (long) cont_type));
-
- duk_push_tval(ctx, thr->valstack + cat->idx_base);
-
- duk_err_setup_heap_ljstate(thr, (duk_small_int_t) cont_type);
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
- }
- }
-
- /* Must restart in all cases because we NULLed thr->ptr_curr_pc. */
- DUK_UNREACHABLE();
- break;
- }
-
- case DUK_EXTRAOP_THROW: {
- duk_context *ctx = (duk_context *) thr;
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-
- /* Note: errors are augmented when they are created, not
- * when they are thrown. So, don't augment here, it would
- * break re-throwing for instance.
- */
-
- /* Sync so that augmentation sees up-to-date activations, NULL
- * thr->ptr_curr_pc so that it's not used if side effects occur
- * in augmentation or longjmp handling.
- */
- DUK__SYNC_AND_NULL_CURR_PC();
-
- duk_dup(ctx, (duk_idx_t) bc);
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (before throw augment)",
- (duk_tval *) duk_get_tval(ctx, -1)));
-#if defined(DUK_USE_AUGMENT_ERROR_THROW)
- duk_err_augment_error_throw(thr);
- DUK_DDD(DUK_DDDPRINT("THROW ERROR (BYTECODE): %!dT (after throw augment)",
- (duk_tval *) duk_get_tval(ctx, -1)));
-#endif
-
- duk_err_setup_heap_ljstate(thr, DUK_LJ_TYPE_THROW);
-
- DUK_ASSERT(thr->heap->lj.jmpbuf_ptr != NULL); /* always in executor */
- duk_err_longjmp(thr);
- DUK_UNREACHABLE();
- break;
- }
-
- case DUK_EXTRAOP_INVLHS: {
- DUK_ERROR(thr, DUK_ERR_REFERENCE_ERROR, "invalid lvalue");
-
- DUK_UNREACHABLE();
- break;
- }
-
- case DUK_EXTRAOP_UNM:
- case DUK_EXTRAOP_UNP: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk__vm_arith_unary_op(thr, DUK__REGP(bc), bc, extraop);
- break;
- }
-
- case DUK_EXTRAOP_DEBUGGER: {
- /* Opcode only emitted by compiler when debugger
- * support is enabled. Ignore it silently without
- * debugger support, in case it has been loaded
- * from precompiled bytecode.
- */
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- if (DUK_HEAP_IS_DEBUGGER_ATTACHED(thr->heap)) {
- DUK_D(DUK_DPRINT("DEBUGGER statement encountered, halt execution"));
- DUK__SYNC_AND_NULL_CURR_PC();
- duk_debug_halt_execution(thr, 1 /*use_prev_pc*/);
- DUK_D(DUK_DPRINT("DEBUGGER statement finished, resume execution"));
- goto restart_execution;
- } else {
- DUK_D(DUK_DPRINT("DEBUGGER statement ignored, debugger not attached"));
- }
-#else
- DUK_D(DUK_DPRINT("DEBUGGER statement ignored, no debugger support"));
-#endif
- break;
- }
-
- case DUK_EXTRAOP_BREAK: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-
- DUK_DDD(DUK_DDDPRINT("BREAK: %ld", (long) bc));
-
- DUK__SYNC_AND_NULL_CURR_PC();
- duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_BREAK);
- goto restart_execution;
- }
-
- case DUK_EXTRAOP_CONTINUE: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-
- DUK_DDD(DUK_DDDPRINT("CONTINUE: %ld", (long) bc));
-
- DUK__SYNC_AND_NULL_CURR_PC();
- duk__handle_break_or_continue(thr, (duk_uint_t) bc, DUK_LJ_TYPE_CONTINUE);
- goto restart_execution;
- }
-
- case DUK_EXTRAOP_BNOT: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-
- duk__vm_bitwise_not(thr, DUK__REGP(bc), bc);
- break;
- }
-
- case DUK_EXTRAOP_LNOT: {
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
- duk_tval *tv1;
-
- tv1 = DUK__REGP(bc);
- duk__vm_logical_not(thr, tv1, tv1);
- break;
- }
-
- case DUK_EXTRAOP_INSTOF: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- tmp = duk_js_instanceof(thr, DUK__REGP(b), DUK__REGCONSTP(c));
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) b);
- break;
- }
-
- case DUK_EXTRAOP_IN: {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_fast_t b = DUK_DEC_B(ins);
- duk_small_uint_fast_t c = DUK_DEC_C(ins);
- duk_bool_t tmp;
-
- tmp = duk_js_in(thr, DUK__REGP(b), DUK__REGCONSTP(c));
- duk_push_boolean(ctx, tmp);
- duk_replace(ctx, (duk_idx_t) b);
- break;
- }
-
- case DUK_EXTRAOP_LABEL: {
- duk_catcher *cat;
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-
- /* allocate catcher and populate it (should be atomic) */
-
- duk_hthread_catchstack_grow(thr);
- cat = thr->catchstack + thr->catchstack_top;
- thr->catchstack_top++;
-
- cat->flags = DUK_CAT_TYPE_LABEL | (bc << DUK_CAT_LABEL_SHIFT);
- cat->callstack_index = thr->callstack_top - 1;
- cat->pc_base = (duk_instr_t *) curr_pc; /* pre-incremented, points to first jump slot */
- cat->idx_base = 0; /* unused for label */
- cat->h_varname = NULL;
-
- DUK_DDD(DUK_DDDPRINT("LABEL catcher: flags=0x%08lx, callstack_index=%ld, pc_base=%ld, "
- "idx_base=%ld, h_varname=%!O, label_id=%ld",
- (long) cat->flags, (long) cat->callstack_index, (long) cat->pc_base,
- (long) cat->idx_base, (duk_heaphdr *) cat->h_varname, (long) DUK_CAT_GET_LABEL(cat)));
-
- curr_pc += 2; /* skip jump slots */
- break;
- }
-
- case DUK_EXTRAOP_ENDLABEL: {
- duk_catcher *cat;
-#if defined(DUK_USE_DDDPRINT) || defined(DUK_USE_ASSERTIONS)
- duk_uint_fast_t bc = DUK_DEC_BC(ins);
-#endif
-#if defined(DUK_USE_DDDPRINT)
- DUK_DDD(DUK_DDDPRINT("ENDLABEL %ld", (long) bc));
-#endif
-
- DUK_ASSERT(thr->catchstack_top >= 1);
-
- cat = thr->catchstack + thr->catchstack_top - 1;
- DUK_UNREF(cat);
- DUK_ASSERT(DUK_CAT_GET_TYPE(cat) == DUK_CAT_TYPE_LABEL);
- DUK_ASSERT((duk_uint_fast_t) DUK_CAT_GET_LABEL(cat) == bc);
-
- duk_hthread_catchstack_unwind(thr, thr->catchstack_top - 1);
- /* no need to unwind callstack */
- break;
- }
-
- default: {
- DUK__INTERNAL_ERROR("invalid extra opcode");
- }
-
- } /* end switch */
-
- break;
- }
-
- default: {
- /* this should never be possible, because the switch-case is
- * comprehensive
- */
- DUK__INTERNAL_ERROR("invalid opcode");
- break;
- }
-
- } /* end switch */
- }
- DUK_UNREACHABLE();
-
-#ifndef DUK_USE_VERBOSE_EXECUTOR_ERRORS
- internal_error:
- DUK_ERROR_INTERNAL(thr, "internal error in bytecode executor");
-#endif
-}
-
-#undef DUK__LONGJMP_RESTART
-#undef DUK__LONGJMP_FINISHED
-#undef DUK__LONGJMP_RETHROW
-
-#undef DUK__RETHAND_RESTART
-#undef DUK__RETHAND_FINISHED
-
-#undef DUK__FUN
-#undef DUK__STRICT
-#undef DUK__REG
-#undef DUK__REGP
-#undef DUK__CONST
-#undef DUK__CONSTP
-#undef DUK__RCISREG
-#undef DUK__REGCONST
-#undef DUK__REGCONSTP
-
-#undef DUK__INTERNAL_ERROR
-#undef DUK__SYNC_CURR_PC
-#undef DUK__SYNC_AND_NULL_CURR_PC
-#line 1 "duk_js_ops.c"
-/*
- * Ecmascript specification algorithm and conversion helpers.
- *
- * These helpers encapsulate the primitive Ecmascript operation
- * semantics, and are used by the bytecode executor and the API
- * (among other places). Note that some primitives are only
- * implemented as part of the API and have no "internal" helper.
- * (This is the case when an internal helper would not really be
- * useful; e.g. the operation is rare, uses value stack heavily,
- * etc.)
- *
- * The operation arguments depend on what is required to implement
- * the operation:
- *
- * - If an operation is simple and stateless, and has no side
- * effects, it won't take an duk_hthread argument and its
- * arguments may be duk_tval pointers (which are safe as long
- * as no side effects take place).
- *
- * - If complex coercions are required (e.g. a "ToNumber" coercion)
- * or errors may be thrown, the operation takes an duk_hthread
- * argument. This also implies that the operation may have
- * arbitrary side effects, invalidating any duk_tval pointers.
- *
- * - For operations with potential side effects, arguments can be
- * taken in several ways:
- *
- * a) as duk_tval pointers, which makes sense if the "common case"
- * can be resolved without side effects (e.g. coercion); the
- * arguments are pushed to the valstack for coercion if
- * necessary
- *
- * b) as duk_tval values
- *
- * c) implicitly on value stack top
- *
- * d) as indices to the value stack
- *
- * Future work:
- *
- * - Argument styles may not be the most sensible in every case now.
- *
- * - In-place coercions might be useful for several operations, if
- * in-place coercion is OK for the bytecode executor and the API.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * [[DefaultValue]] (E5 Section 8.12.8)
- *
- * ==> implemented in the API.
- */
-
-/*
- * ToPrimitive() (E5 Section 9.1)
- *
- * ==> implemented in the API.
- */
-
-/*
- * ToBoolean() (E5 Section 9.2)
- */
-
-DUK_INTERNAL duk_bool_t duk_js_toboolean(duk_tval *tv) {
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL:
- return 0;
- case DUK_TAG_BOOLEAN:
- return DUK_TVAL_GET_BOOLEAN(tv);
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv);
- DUK_ASSERT(h != NULL);
- return (DUK_HSTRING_GET_BYTELEN(h) > 0 ? 1 : 0);
- }
- case DUK_TAG_OBJECT: {
- return 1;
- }
- case DUK_TAG_BUFFER: {
- /* mimic semantics for strings */
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- DUK_ASSERT(h != NULL);
- return (DUK_HBUFFER_GET_SIZE(h) > 0 ? 1 : 0);
- }
- case DUK_TAG_POINTER: {
- void *p = DUK_TVAL_GET_POINTER(tv);
- return (p != NULL ? 1 : 0);
- }
- case DUK_TAG_LIGHTFUNC: {
- return 1;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
- if (DUK_TVAL_GET_FASTINT(tv) != 0) {
- return 1;
- } else {
- return 0;
- }
-#endif
- default: {
- /* number */
- duk_double_t d;
- int c;
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
- d = DUK_TVAL_GET_DOUBLE(tv);
- c = DUK_FPCLASSIFY((double) d);
- if (c == DUK_FP_ZERO || c == DUK_FP_NAN) {
- return 0;
- } else {
- return 1;
- }
- }
- }
- DUK_UNREACHABLE();
-}
-
-/*
- * ToNumber() (E5 Section 9.3)
- *
- * Value to convert must be on stack top, and is popped before exit.
- *
- * See: http://www.cs.indiana.edu/~burger/FP-Printing-PLDI96.pdf
- * http://www.cs.indiana.edu/~burger/fp/index.html
- *
- * Notes on the conversion:
- *
- * - There are specific requirements on the accuracy of the conversion
- * through a "Mathematical Value" (MV), so this conversion is not
- * trivial.
- *
- * - Quick rejects (e.g. based on first char) are difficult because
- * the grammar allows leading and trailing white space.
- *
- * - Quick reject based on string length is difficult even after
- * accounting for white space; there may be arbitrarily many
- * decimal digits.
- *
- * - Standard grammar allows decimal values ("123"), hex values
- * ("0x123") and infinities
- *
- * - Unlike source code literals, ToNumber() coerces empty strings
- * and strings with only whitespace to zero (not NaN).
- */
-
-/* E5 Section 9.3.1 */
-DUK_LOCAL duk_double_t duk__tonumber_string_raw(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_small_uint_t s2n_flags;
- duk_double_t d;
-
- /* Quite lenient, e.g. allow empty as zero, but don't allow trailing
- * garbage.
- */
- s2n_flags = DUK_S2N_FLAG_TRIM_WHITE |
- DUK_S2N_FLAG_ALLOW_EXP |
- DUK_S2N_FLAG_ALLOW_PLUS |
- DUK_S2N_FLAG_ALLOW_MINUS |
- DUK_S2N_FLAG_ALLOW_INF |
- DUK_S2N_FLAG_ALLOW_FRAC |
- DUK_S2N_FLAG_ALLOW_NAKED_FRAC |
- DUK_S2N_FLAG_ALLOW_EMPTY_FRAC |
- DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO |
- DUK_S2N_FLAG_ALLOW_LEADING_ZERO |
- DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT;
-
- duk_numconv_parse(ctx, 10 /*radix*/, s2n_flags);
- d = duk_get_number(ctx, -1);
- duk_pop(ctx);
-
- return d;
-}
-
-DUK_INTERNAL duk_double_t duk_js_tonumber(duk_hthread *thr, duk_tval *tv) {
- duk_context *ctx = (duk_hthread *) thr;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(tv != NULL);
-
- switch (DUK_TVAL_GET_TAG(tv)) {
- case DUK_TAG_UNDEFINED: {
- /* return a specific NaN (although not strictly necessary) */
- duk_double_union du;
- DUK_DBLUNION_SET_NAN(&du);
- DUK_ASSERT(DUK_DBLUNION_IS_NORMALIZED(&du));
- return du.d;
- }
- case DUK_TAG_NULL: {
- /* +0.0 */
- return 0.0;
- }
- case DUK_TAG_BOOLEAN: {
- if (DUK_TVAL_IS_BOOLEAN_TRUE(tv)) {
- return 1.0;
- }
- return 0.0;
- }
- case DUK_TAG_STRING: {
- duk_hstring *h = DUK_TVAL_GET_STRING(tv);
- duk_push_hstring(ctx, h);
- return duk__tonumber_string_raw(thr);
- }
- case DUK_TAG_OBJECT: {
- /* Note: ToPrimitive(object,hint) == [[DefaultValue]](object,hint),
- * so use [[DefaultValue]] directly.
- */
- duk_double_t d;
- duk_push_tval(ctx, tv);
- duk_to_defaultvalue(ctx, -1, DUK_HINT_NUMBER); /* 'tv' becomes invalid */
-
- /* recursive call for a primitive value (guaranteed not to cause second
- * recursion).
- */
- d = duk_js_tonumber(thr, duk_require_tval(ctx, -1));
-
- duk_pop(ctx);
- return d;
- }
- case DUK_TAG_BUFFER: {
- /* Coerce like a string. This makes sense because addition also treats
- * buffers like strings.
- */
- duk_hbuffer *h = DUK_TVAL_GET_BUFFER(tv);
- duk_push_hbuffer(ctx, h);
- duk_to_string(ctx, -1); /* XXX: expensive, but numconv now expects to see a string */
- return duk__tonumber_string_raw(thr);
- }
- case DUK_TAG_POINTER: {
- /* Coerce like boolean */
- void *p = DUK_TVAL_GET_POINTER(tv);
- return (p != NULL ? 1.0 : 0.0);
- }
- case DUK_TAG_LIGHTFUNC: {
- /* +(function(){}) -> NaN */
- return DUK_DOUBLE_NAN;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
- return (duk_double_t) DUK_TVAL_GET_FASTINT(tv);
-#endif
- default: {
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv));
- DUK_ASSERT(DUK_TVAL_IS_DOUBLE(tv));
- return DUK_TVAL_GET_DOUBLE(tv);
- }
- }
-
- DUK_UNREACHABLE();
-}
-
-/*
- * ToInteger() (E5 Section 9.4)
- */
-
-/* exposed, used by e.g. duk_bi_date.c */
-DUK_INTERNAL duk_double_t duk_js_tointeger_number(duk_double_t x) {
- duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x);
-
- if (c == DUK_FP_NAN) {
- return 0.0;
- } else if (c == DUK_FP_ZERO || c == DUK_FP_INFINITE) {
- /* XXX: FP_ZERO check can be removed, the else clause handles it
- * correctly (preserving sign).
- */
- return x;
- } else {
- duk_small_int_t s = (duk_small_int_t) DUK_SIGNBIT(x);
- x = DUK_FLOOR(DUK_FABS(x)); /* truncate towards zero */
- if (s) {
- x = -x;
- }
- return x;
- }
-}
-
-DUK_INTERNAL duk_double_t duk_js_tointeger(duk_hthread *thr, duk_tval *tv) {
- /* XXX: fastint */
- duk_double_t d = duk_js_tonumber(thr, tv); /* invalidates tv */
- return duk_js_tointeger_number(d);
-}
-
-/*
- * ToInt32(), ToUint32(), ToUint16() (E5 Sections 9.5, 9.6, 9.7)
- */
-
-/* combined algorithm matching E5 Sections 9.5 and 9.6 */
-DUK_LOCAL duk_double_t duk__toint32_touint32_helper(duk_double_t x, duk_bool_t is_toint32) {
- duk_small_int_t c = (duk_small_int_t) DUK_FPCLASSIFY(x);
- duk_small_int_t s;
-
- if (c == DUK_FP_NAN || c == DUK_FP_ZERO || c == DUK_FP_INFINITE) {
- return 0.0;
- }
-
-
- /* x = sign(x) * floor(abs(x)), i.e. truncate towards zero, keep sign */
- s = (duk_small_int_t) DUK_SIGNBIT(x);
- x = DUK_FLOOR(DUK_FABS(x));
- if (s) {
- x = -x;
- }
-
- /* NOTE: fmod(x) result sign is same as sign of x, which
- * differs from what Javascript wants (see Section 9.6).
- */
-
- x = DUK_FMOD(x, DUK_DOUBLE_2TO32); /* -> x in ]-2**32, 2**32[ */
-
- if (x < 0.0) {
- x += DUK_DOUBLE_2TO32;
- }
- /* -> x in [0, 2**32[ */
-
- if (is_toint32) {
- if (x >= DUK_DOUBLE_2TO31) {
- /* x in [2**31, 2**32[ */
-
- x -= DUK_DOUBLE_2TO32; /* -> x in [-2**31,2**31[ */
- }
- }
-
- return x;
-}
-
-DUK_INTERNAL duk_int32_t duk_js_toint32(duk_hthread *thr, duk_tval *tv) {
- duk_double_t d;
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv)) {
- return DUK_TVAL_GET_FASTINT_I32(tv);
- }
-#endif
-
- d = duk_js_tonumber(thr, tv); /* invalidates tv */
- d = duk__toint32_touint32_helper(d, 1);
- DUK_ASSERT(DUK_FPCLASSIFY(d) == DUK_FP_ZERO || DUK_FPCLASSIFY(d) == DUK_FP_NORMAL);
- DUK_ASSERT(d >= -2147483648.0 && d <= 2147483647.0); /* [-0x80000000,0x7fffffff] */
- DUK_ASSERT(d == ((duk_double_t) ((duk_int32_t) d))); /* whole, won't clip */
- return (duk_int32_t) d;
-}
-
-
-DUK_INTERNAL duk_uint32_t duk_js_touint32(duk_hthread *thr, duk_tval *tv) {
- duk_double_t d;
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv)) {
- return DUK_TVAL_GET_FASTINT_U32(tv);
- }
-#endif
-
- d = duk_js_tonumber(thr, tv); /* invalidates tv */
- d = duk__toint32_touint32_helper(d, 0);
- DUK_ASSERT(DUK_FPCLASSIFY(d) == DUK_FP_ZERO || DUK_FPCLASSIFY(d) == DUK_FP_NORMAL);
- DUK_ASSERT(d >= 0.0 && d <= 4294967295.0); /* [0x00000000, 0xffffffff] */
- DUK_ASSERT(d == ((duk_double_t) ((duk_uint32_t) d))); /* whole, won't clip */
- return (duk_uint32_t) d;
-
-}
-
-DUK_INTERNAL duk_uint16_t duk_js_touint16(duk_hthread *thr, duk_tval *tv) {
- /* should be a safe way to compute this */
- return (duk_uint16_t) (duk_js_touint32(thr, tv) & 0x0000ffffU);
-}
-
-/*
- * ToString() (E5 Section 9.8)
- *
- * ==> implemented in the API.
- */
-
-/*
- * ToObject() (E5 Section 9.9)
- *
- * ==> implemented in the API.
- */
-
-/*
- * CheckObjectCoercible() (E5 Section 9.10)
- *
- * Note: no API equivalent now.
- */
-
-#if 0 /* unused */
-DUK_INTERNAL void duk_js_checkobjectcoercible(duk_hthread *thr, duk_tval *tv_x) {
- duk_small_uint_t tag = DUK_TVAL_GET_TAG(tv_x);
-
- /* Note: this must match ToObject() behavior */
-
- if (tag == DUK_TAG_UNDEFINED ||
- tag == DUK_TAG_NULL ||
- tag == DUK_TAG_POINTER ||
- tag == DUK_TAG_BUFFER) {
- DUK_ERROR_TYPE(thr, "not object coercible");
- }
-}
-#endif
-
-/*
- * IsCallable() (E5 Section 9.11)
- *
- * XXX: API equivalent is a separate implementation now, and this has
- * currently no callers.
- */
-
-#if 0 /* unused */
-DUK_INTERNAL duk_bool_t duk_js_iscallable(duk_tval *tv_x) {
- duk_hobject *obj;
-
- if (!DUK_TVAL_IS_OBJECT(tv_x)) {
- return 0;
- }
- obj = DUK_TVAL_GET_OBJECT(tv_x);
- DUK_ASSERT(obj != NULL);
-
- return DUK_HOBJECT_IS_CALLABLE(obj);
-}
-#endif
-
-/*
- * Loose equality, strict equality, and SameValue (E5 Sections 11.9.1, 11.9.4,
- * 9.12). These have much in common so they can share some helpers.
- *
- * Future work notes:
- *
- * - Current implementation (and spec definition) has recursion; this should
- * be fixed if possible.
- *
- * - String-to-number coercion should be possible without going through the
- * value stack (and be more compact) if a shared helper is invoked.
- */
-
-/* Note that this is the same operation for strict and loose equality:
- * - E5 Section 11.9.3, step 1.c (loose)
- * - E5 Section 11.9.6, step 4 (strict)
- */
-
-DUK_LOCAL duk_bool_t duk__js_equals_number(duk_double_t x, duk_double_t y) {
-#if defined(DUK_USE_PARANOID_MATH)
- /* Straightforward algorithm, makes fewer compiler assumptions. */
- duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x);
- duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y);
- if (cx == DUK_FP_NAN || cy == DUK_FP_NAN) {
- return 0;
- }
- if (cx == DUK_FP_ZERO && cy == DUK_FP_ZERO) {
- return 1;
- }
- if (x == y) {
- return 1;
- }
- return 0;
-#else /* DUK_USE_PARANOID_MATH */
- /* Better equivalent algorithm. If the compiler is compliant, C and
- * Ecmascript semantics are identical for this particular comparison.
- * In particular, NaNs must never compare equal and zeroes must compare
- * equal regardless of sign. Could also use a macro, but this inlines
- * already nicely (no difference on gcc, for instance).
- */
- if (x == y) {
- /* IEEE requires that NaNs compare false */
- DUK_ASSERT(DUK_FPCLASSIFY(x) != DUK_FP_NAN);
- DUK_ASSERT(DUK_FPCLASSIFY(y) != DUK_FP_NAN);
- return 1;
- } else {
- /* IEEE requires that zeros compare the same regardless
- * of their signed, so if both x and y are zeroes, they
- * are caught above.
- */
- DUK_ASSERT(!(DUK_FPCLASSIFY(x) == DUK_FP_ZERO && DUK_FPCLASSIFY(y) == DUK_FP_ZERO));
- return 0;
- }
-#endif /* DUK_USE_PARANOID_MATH */
-}
-
-DUK_LOCAL duk_bool_t duk__js_samevalue_number(duk_double_t x, duk_double_t y) {
-#if defined(DUK_USE_PARANOID_MATH)
- duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x);
- duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y);
-
- if (cx == DUK_FP_NAN && cy == DUK_FP_NAN) {
- /* SameValue(NaN, NaN) = true, regardless of NaN sign or extra bits */
- return 1;
- }
- if (cx == DUK_FP_ZERO && cy == DUK_FP_ZERO) {
- /* Note: cannot assume that a non-zero return value of signbit() would
- * always be the same -- hence cannot (portably) use something like:
- *
- * signbit(x) == signbit(y)
- */
- duk_small_int_t sx = (DUK_SIGNBIT(x) ? 1 : 0);
- duk_small_int_t sy = (DUK_SIGNBIT(y) ? 1 : 0);
- return (sx == sy);
- }
-
- /* normal comparison; known:
- * - both x and y are not NaNs (but one of them can be)
- * - both x and y are not zero (but one of them can be)
- * - x and y may be denormal or infinite
- */
-
- return (x == y);
-#else /* DUK_USE_PARANOID_MATH */
- duk_small_int_t cx = (duk_small_int_t) DUK_FPCLASSIFY(x);
- duk_small_int_t cy = (duk_small_int_t) DUK_FPCLASSIFY(y);
-
- if (x == y) {
- /* IEEE requires that NaNs compare false */
- DUK_ASSERT(DUK_FPCLASSIFY(x) != DUK_FP_NAN);
- DUK_ASSERT(DUK_FPCLASSIFY(y) != DUK_FP_NAN);
-
- /* Using classification has smaller footprint than direct comparison. */
- if (DUK_UNLIKELY(cx == DUK_FP_ZERO && cy == DUK_FP_ZERO)) {
- /* Note: cannot assume that a non-zero return value of signbit() would
- * always be the same -- hence cannot (portably) use something like:
- *
- * signbit(x) == signbit(y)
- */
- duk_small_int_t sx = (DUK_SIGNBIT(x) ? 1 : 0);
- duk_small_int_t sy = (DUK_SIGNBIT(y) ? 1 : 0);
- return (sx == sy);
- }
- return 1;
- } else {
- /* IEEE requires that zeros compare the same regardless
- * of their signed, so if both x and y are zeroes, they
- * are caught above.
- */
- DUK_ASSERT(!(DUK_FPCLASSIFY(x) == DUK_FP_ZERO && DUK_FPCLASSIFY(y) == DUK_FP_ZERO));
-
- /* Difference to non-strict/strict comparison is that NaNs compare
- * equal and signed zero signs matter.
- */
- if (DUK_UNLIKELY(cx == DUK_FP_NAN && cy == DUK_FP_NAN)) {
- /* SameValue(NaN, NaN) = true, regardless of NaN sign or extra bits */
- return 1;
- }
- return 0;
- }
-#endif /* DUK_USE_PARANOID_MATH */
-}
-
-DUK_INTERNAL duk_bool_t duk_js_equals_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_tval *tv_tmp;
-
- /* If flags != 0 (strict or SameValue), thr can be NULL. For loose
- * equals comparison it must be != NULL.
- */
- DUK_ASSERT(flags != 0 || thr != NULL);
-
- /*
- * Same type?
- *
- * Note: since number values have no explicit tag in the 8-byte
- * representation, need the awkward if + switch.
- */
-
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
- if (DUK_TVAL_GET_FASTINT(tv_x) == DUK_TVAL_GET_FASTINT(tv_y)) {
- return 1;
- } else {
- return 0;
- }
- }
- else
-#endif
- if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
- /* Catches both doubles and cases where only one argument is a fastint */
- if (DUK_UNLIKELY((flags & DUK_EQUALS_FLAG_SAMEVALUE) != 0)) {
- /* SameValue */
- return duk__js_samevalue_number(DUK_TVAL_GET_NUMBER(tv_x),
- DUK_TVAL_GET_NUMBER(tv_y));
- } else {
- /* equals and strict equals */
- return duk__js_equals_number(DUK_TVAL_GET_NUMBER(tv_x),
- DUK_TVAL_GET_NUMBER(tv_y));
- }
- } else if (DUK_TVAL_GET_TAG(tv_x) == DUK_TVAL_GET_TAG(tv_y)) {
- switch (DUK_TVAL_GET_TAG(tv_x)) {
- case DUK_TAG_UNDEFINED:
- case DUK_TAG_NULL: {
- return 1;
- }
- case DUK_TAG_BOOLEAN: {
- return DUK_TVAL_GET_BOOLEAN(tv_x) == DUK_TVAL_GET_BOOLEAN(tv_y);
- }
- case DUK_TAG_POINTER: {
- return DUK_TVAL_GET_POINTER(tv_x) == DUK_TVAL_GET_POINTER(tv_y);
- }
- case DUK_TAG_STRING:
- case DUK_TAG_OBJECT: {
- /* heap pointer comparison suffices */
- return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y);
- }
- case DUK_TAG_BUFFER: {
- if ((flags & (DUK_EQUALS_FLAG_STRICT | DUK_EQUALS_FLAG_SAMEVALUE)) != 0) {
- /* heap pointer comparison suffices */
- return DUK_TVAL_GET_HEAPHDR(tv_x) == DUK_TVAL_GET_HEAPHDR(tv_y);
- } else {
- /* non-strict equality for buffers compares contents */
- duk_hbuffer *h_x = DUK_TVAL_GET_BUFFER(tv_x);
- duk_hbuffer *h_y = DUK_TVAL_GET_BUFFER(tv_y);
- duk_size_t len_x = DUK_HBUFFER_GET_SIZE(h_x);
- duk_size_t len_y = DUK_HBUFFER_GET_SIZE(h_y);
- void *buf_x;
- void *buf_y;
- if (len_x != len_y) {
- return 0;
- }
- buf_x = (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_x);
- buf_y = (void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_y);
- /* if len_x == len_y == 0, buf_x and/or buf_y may
- * be NULL, but that's OK.
- */
- DUK_ASSERT(len_x == len_y);
- DUK_ASSERT(len_x == 0 || buf_x != NULL);
- DUK_ASSERT(len_y == 0 || buf_y != NULL);
- return (DUK_MEMCMP((const void *) buf_x, (const void *) buf_y, (size_t) len_x) == 0) ? 1 : 0;
- }
- }
- case DUK_TAG_LIGHTFUNC: {
- /* At least 'magic' has a significant impact on function
- * identity.
- */
- duk_small_uint_t lf_flags_x;
- duk_small_uint_t lf_flags_y;
- duk_c_function func_x;
- duk_c_function func_y;
-
- DUK_TVAL_GET_LIGHTFUNC(tv_x, func_x, lf_flags_x);
- DUK_TVAL_GET_LIGHTFUNC(tv_y, func_y, lf_flags_y);
- return ((func_x == func_y) && (lf_flags_x == lf_flags_y)) ? 1 : 0;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x));
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_y));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_y));
- DUK_UNREACHABLE();
- return 0;
- }
- }
- }
-
- if ((flags & (DUK_EQUALS_FLAG_STRICT | DUK_EQUALS_FLAG_SAMEVALUE)) != 0) {
- return 0;
- }
-
- DUK_ASSERT(flags == 0); /* non-strict equality from here on */
-
- /*
- * Types are different; various cases for non-strict comparison
- *
- * Since comparison is symmetric, we use a "swap trick" to reduce
- * code size.
- */
-
- /* Undefined/null are considered equal (e.g. "null == undefined" -> true). */
- if ((DUK_TVAL_IS_UNDEFINED(tv_x) && DUK_TVAL_IS_NULL(tv_y)) ||
- (DUK_TVAL_IS_NULL(tv_x) && DUK_TVAL_IS_UNDEFINED(tv_y))) {
- return 1;
- }
-
- /* Number/string-or-buffer -> coerce string to number (e.g. "'1.5' == 1.5" -> true). */
- if (DUK_TVAL_IS_NUMBER(tv_x) && (DUK_TVAL_IS_STRING(tv_y) || DUK_TVAL_IS_BUFFER(tv_y))) {
- /* the next 'if' is guaranteed to match after swap */
- tv_tmp = tv_x;
- tv_x = tv_y;
- tv_y = tv_tmp;
- }
- if ((DUK_TVAL_IS_STRING(tv_x) || DUK_TVAL_IS_BUFFER(tv_x)) && DUK_TVAL_IS_NUMBER(tv_y)) {
- /* XXX: this is possible without resorting to the value stack */
- duk_double_t d1, d2;
- d2 = DUK_TVAL_GET_NUMBER(tv_y);
- duk_push_tval(ctx, tv_x);
- duk_to_string(ctx, -1); /* buffer values are coerced first to string here */
- duk_to_number(ctx, -1);
- d1 = duk_require_number(ctx, -1);
- duk_pop(ctx);
- return duk__js_equals_number(d1, d2);
- }
-
- /* Buffer/string -> compare contents. */
- if (DUK_TVAL_IS_BUFFER(tv_x) && DUK_TVAL_IS_STRING(tv_y)) {
- tv_tmp = tv_x;
- tv_x = tv_y;
- tv_y = tv_tmp;
- }
- if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_BUFFER(tv_y)) {
- duk_hstring *h_x = DUK_TVAL_GET_STRING(tv_x);
- duk_hbuffer *h_y = DUK_TVAL_GET_BUFFER(tv_y);
- duk_size_t len_x = DUK_HSTRING_GET_BYTELEN(h_x);
- duk_size_t len_y = DUK_HBUFFER_GET_SIZE(h_y);
- const void *buf_x;
- const void *buf_y;
- if (len_x != len_y) {
- return 0;
- }
- buf_x = (const void *) DUK_HSTRING_GET_DATA(h_x);
- buf_y = (const void *) DUK_HBUFFER_GET_DATA_PTR(thr->heap, h_y);
- /* if len_x == len_y == 0, buf_x and/or buf_y may
- * be NULL, but that's OK.
- */
- DUK_ASSERT(len_x == len_y);
- DUK_ASSERT(len_x == 0 || buf_x != NULL);
- DUK_ASSERT(len_y == 0 || buf_y != NULL);
- return (DUK_MEMCMP((const void *) buf_x, (const void *) buf_y, (size_t) len_x) == 0) ? 1 : 0;
- }
-
- /* Boolean/any -> coerce boolean to number and try again. If boolean is
- * compared to a pointer, the final comparison after coercion now always
- * yields false (as pointer vs. number compares to false), but this is
- * not special cased.
- */
- if (DUK_TVAL_IS_BOOLEAN(tv_x)) {
- tv_tmp = tv_x;
- tv_x = tv_y;
- tv_y = tv_tmp;
- }
- if (DUK_TVAL_IS_BOOLEAN(tv_y)) {
- /* ToNumber(bool) is +1.0 or 0.0. Tagged boolean value is always 0 or 1. */
- duk_bool_t rc;
- DUK_ASSERT(DUK_TVAL_GET_BOOLEAN(tv_y) == 0 || DUK_TVAL_GET_BOOLEAN(tv_y) == 1);
- duk_push_tval(ctx, tv_x);
- duk_push_int(ctx, DUK_TVAL_GET_BOOLEAN(tv_y));
- rc = duk_js_equals_helper(thr,
- DUK_GET_TVAL_NEGIDX(ctx, -2),
- DUK_GET_TVAL_NEGIDX(ctx, -1),
- 0 /*flags:nonstrict*/);
- duk_pop_2(ctx);
- return rc;
- }
-
- /* String-number-buffer/object -> coerce object to primitive (apparently without hint), then try again. */
- if ((DUK_TVAL_IS_STRING(tv_x) || DUK_TVAL_IS_NUMBER(tv_x) || DUK_TVAL_IS_BUFFER(tv_x)) &&
- DUK_TVAL_IS_OBJECT(tv_y)) {
- tv_tmp = tv_x;
- tv_x = tv_y;
- tv_y = tv_tmp;
- }
- if (DUK_TVAL_IS_OBJECT(tv_x) &&
- (DUK_TVAL_IS_STRING(tv_y) || DUK_TVAL_IS_NUMBER(tv_y) || DUK_TVAL_IS_BUFFER(tv_y))) {
- duk_bool_t rc;
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- duk_to_primitive(ctx, -2, DUK_HINT_NONE); /* apparently no hint? */
- rc = duk_js_equals_helper(thr,
- DUK_GET_TVAL_NEGIDX(ctx, -2),
- DUK_GET_TVAL_NEGIDX(ctx, -1),
- 0 /*flags:nonstrict*/);
- duk_pop_2(ctx);
- return rc;
- }
-
- /* Nothing worked -> not equal. */
- return 0;
-}
-
-/*
- * Comparisons (x >= y, x > y, x <= y, x < y)
- *
- * E5 Section 11.8.5: implement 'x < y' and then use negate and eval_left_first
- * flags to get the rest.
- */
-
-/* XXX: this should probably just operate on the stack top, because it
- * needs to push stuff on the stack anyway...
- */
-
-DUK_INTERNAL duk_small_int_t duk_js_data_compare(const duk_uint8_t *buf1, const duk_uint8_t *buf2, duk_size_t len1, duk_size_t len2) {
- duk_size_t prefix_len;
- duk_small_int_t rc;
-
- prefix_len = (len1 <= len2 ? len1 : len2);
-
- /* DUK_MEMCMP() is guaranteed to return zero (equal) for zero length
- * inputs so no zero length check is needed.
- */
- rc = DUK_MEMCMP((const void *) buf1,
- (const void *) buf2,
- (size_t) prefix_len);
-
- if (rc < 0) {
- return -1;
- } else if (rc > 0) {
- return 1;
- }
-
- /* prefix matches, lengths matter now */
- if (len1 < len2) {
- /* e.g. "x" < "xx" */
- return -1;
- } else if (len1 > len2) {
- return 1;
- }
-
- return 0;
-}
-
-DUK_INTERNAL duk_small_int_t duk_js_string_compare(duk_hstring *h1, duk_hstring *h2) {
- /*
- * String comparison (E5 Section 11.8.5, step 4), which
- * needs to compare codepoint by codepoint.
- *
- * However, UTF-8 allows us to use strcmp directly: the shared
- * prefix will be encoded identically (UTF-8 has unique encoding)
- * and the first differing character can be compared with a simple
- * unsigned byte comparison (which strcmp does).
- *
- * This will not work properly for non-xutf-8 strings, but this
- * is not an issue for compliance.
- */
-
- DUK_ASSERT(h1 != NULL);
- DUK_ASSERT(h2 != NULL);
-
- return duk_js_data_compare((const duk_uint8_t *) DUK_HSTRING_GET_DATA(h1),
- (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h2),
- (duk_size_t) DUK_HSTRING_GET_BYTELEN(h1),
- (duk_size_t) DUK_HSTRING_GET_BYTELEN(h2));
-}
-
-#if 0 /* unused */
-DUK_INTERNAL duk_small_int_t duk_js_buffer_compare(duk_heap *heap, duk_hbuffer *h1, duk_hbuffer *h2) {
- /* Similar to String comparison. */
-
- DUK_ASSERT(h1 != NULL);
- DUK_ASSERT(h2 != NULL);
- DUK_UNREF(heap);
-
- return duk_js_data_compare((const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(heap, h1),
- (const duk_uint8_t *) DUK_HBUFFER_GET_DATA_PTR(heap, h2),
- (duk_size_t) DUK_HBUFFER_GET_SIZE(h1),
- (duk_size_t) DUK_HBUFFER_GET_SIZE(h2));
-}
-#endif
-
-DUK_INTERNAL duk_bool_t duk_js_compare_helper(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y, duk_small_int_t flags) {
- duk_context *ctx = (duk_context *) thr;
- duk_double_t d1, d2;
- duk_small_int_t c1, c2;
- duk_small_int_t s1, s2;
- duk_small_int_t rc;
- duk_bool_t retval;
-
- /* Fast path for fastints */
-#if defined(DUK_USE_FASTINT)
- if (DUK_TVAL_IS_FASTINT(tv_x) && DUK_TVAL_IS_FASTINT(tv_y)) {
- duk_int64_t v1 = DUK_TVAL_GET_FASTINT(tv_x);
- duk_int64_t v2 = DUK_TVAL_GET_FASTINT(tv_y);
- if (v1 < v2) {
- /* 'lt is true' */
- retval = 1;
- } else {
- retval = 0;
- }
- if (flags & DUK_COMPARE_FLAG_NEGATE) {
- retval ^= 1;
- }
- return retval;
- }
-#endif /* DUK_USE_FASTINT */
-
- /* Fast path for numbers (one of which may be a fastint) */
-#if 1 /* XXX: make fast paths optional for size minimization? */
- if (DUK_TVAL_IS_NUMBER(tv_x) && DUK_TVAL_IS_NUMBER(tv_y)) {
- d1 = DUK_TVAL_GET_NUMBER(tv_x);
- d2 = DUK_TVAL_GET_NUMBER(tv_y);
- c1 = DUK_FPCLASSIFY(d1);
- c2 = DUK_FPCLASSIFY(d2);
-
- if (c1 == DUK_FP_NORMAL && c2 == DUK_FP_NORMAL) {
- /* XXX: this is a very narrow check, and doesn't cover
- * zeroes, subnormals, infinities, which compare normally.
- */
-
- if (d1 < d2) {
- /* 'lt is true' */
- retval = 1;
- } else {
- retval = 0;
- }
- if (flags & DUK_COMPARE_FLAG_NEGATE) {
- retval ^= 1;
- }
- return retval;
- }
- }
-#endif
-
- /* Slow path */
-
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
-
- if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
- duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
- duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
- } else {
- duk_to_primitive(ctx, -1, DUK_HINT_NUMBER);
- duk_to_primitive(ctx, -2, DUK_HINT_NUMBER);
- }
-
- /* Note: reuse variables */
- tv_x = DUK_GET_TVAL_NEGIDX(ctx, -2);
- tv_y = DUK_GET_TVAL_NEGIDX(ctx, -1);
-
- if (DUK_TVAL_IS_STRING(tv_x) && DUK_TVAL_IS_STRING(tv_y)) {
- duk_hstring *h1 = DUK_TVAL_GET_STRING(tv_x);
- duk_hstring *h2 = DUK_TVAL_GET_STRING(tv_y);
- DUK_ASSERT(h1 != NULL);
- DUK_ASSERT(h2 != NULL);
-
- rc = duk_js_string_compare(h1, h2);
- if (rc < 0) {
- goto lt_true;
- } else {
- goto lt_false;
- }
- } else {
- /* Ordering should not matter (E5 Section 11.8.5, step 3.a) but
- * preserve it just in case.
- */
-
- if (flags & DUK_COMPARE_FLAG_EVAL_LEFT_FIRST) {
- d1 = duk_to_number(ctx, -2);
- d2 = duk_to_number(ctx, -1);
- } else {
- d2 = duk_to_number(ctx, -1);
- d1 = duk_to_number(ctx, -2);
- }
-
- c1 = (duk_small_int_t) DUK_FPCLASSIFY(d1);
- s1 = (duk_small_int_t) DUK_SIGNBIT(d1);
- c2 = (duk_small_int_t) DUK_FPCLASSIFY(d2);
- s2 = (duk_small_int_t) DUK_SIGNBIT(d2);
-
- if (c1 == DUK_FP_NAN || c2 == DUK_FP_NAN) {
- goto lt_undefined;
- }
-
- if (c1 == DUK_FP_ZERO && c2 == DUK_FP_ZERO) {
- /* For all combinations: +0 < +0, +0 < -0, -0 < +0, -0 < -0,
- * steps e, f, and g.
- */
- goto lt_false;
- }
-
- if (d1 == d2) {
- goto lt_false;
- }
-
- if (c1 == DUK_FP_INFINITE && s1 == 0) {
- /* x == +Infinity */
- goto lt_false;
- }
-
- if (c2 == DUK_FP_INFINITE && s2 == 0) {
- /* y == +Infinity */
- goto lt_true;
- }
-
- if (c2 == DUK_FP_INFINITE && s2 != 0) {
- /* y == -Infinity */
- goto lt_false;
- }
-
- if (c1 == DUK_FP_INFINITE && s1 != 0) {
- /* x == -Infinity */
- goto lt_true;
- }
-
- if (d1 < d2) {
- goto lt_true;
- }
-
- goto lt_false;
- }
-
- lt_undefined:
- /* Note: undefined from Section 11.8.5 always results in false
- * return (see e.g. Section 11.8.3) - hence special treatment here.
- */
- retval = 0;
- goto cleanup;
-
- lt_true:
- if (flags & DUK_COMPARE_FLAG_NEGATE) {
- retval = 0;
- goto cleanup;
- } else {
- retval = 1;
- goto cleanup;
- }
- /* never here */
-
- lt_false:
- if (flags & DUK_COMPARE_FLAG_NEGATE) {
- retval = 1;
- goto cleanup;
- } else {
- retval = 0;
- goto cleanup;
- }
- /* never here */
-
- cleanup:
- duk_pop_2(ctx);
- return retval;
-}
-
-/*
- * instanceof
- */
-
-/*
- * E5 Section 11.8.6 describes the main algorithm, which uses
- * [[HasInstance]]. [[HasInstance]] is defined for only
- * function objects:
- *
- * - Normal functions:
- * E5 Section 15.3.5.3
- * - Functions established with Function.prototype.bind():
- * E5 Section 15.3.4.5.3
- *
- * For other objects, a TypeError is thrown.
- *
- * Limited Proxy support: don't support 'getPrototypeOf' trap but
- * continue lookup in Proxy target if the value is a Proxy.
- */
-
-DUK_INTERNAL duk_bool_t duk_js_instanceof(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *func;
- duk_hobject *val;
- duk_hobject *proto;
- duk_uint_t sanity;
-
- /*
- * Get the values onto the stack first. It would be possible to cover
- * some normal cases without resorting to the value stack.
- *
- * The right hand side could be a light function (as they generally
- * behave like objects). Light functions never have a 'prototype'
- * property so E5.1 Section 15.3.5.3 step 3 always throws a TypeError.
- * Using duk_require_hobject() is thus correct (except for error msg).
- */
-
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- func = duk_require_hobject(ctx, -1);
-
- /*
- * For bound objects, [[HasInstance]] just calls the target function
- * [[HasInstance]]. If that is again a bound object, repeat until
- * we find a non-bound Function object.
- */
-
- /* XXX: this bound function resolution also happens elsewhere,
- * move into a shared helper.
- */
-
- sanity = DUK_HOBJECT_BOUND_CHAIN_SANITY;
- do {
- /* check func supports [[HasInstance]] (this is checked for every function
- * in the bound chain, including the final one)
- */
-
- if (!DUK_HOBJECT_IS_CALLABLE(func)) {
- /*
- * Note: of native Ecmascript objects, only Function instances
- * have a [[HasInstance]] internal property. Custom objects might
- * also have it, but not in current implementation.
- *
- * XXX: add a separate flag, DUK_HOBJECT_FLAG_ALLOW_INSTANCEOF?
- */
- DUK_ERROR_TYPE(thr, "invalid instanceof rval");
- }
-
- if (!DUK_HOBJECT_HAS_BOUND(func)) {
- break;
- }
-
- /* [ ... lval rval ] */
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_TARGET); /* -> [ ... lval rval new_rval ] */
- duk_replace(ctx, -1); /* -> [ ... lval new_rval ] */
- func = duk_require_hobject(ctx, -1);
-
- /* func support for [[HasInstance]] checked in the beginning of the loop */
- } while (--sanity > 0);
-
- if (sanity == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_BOUND_CHAIN_LIMIT);
- }
-
- /*
- * 'func' is now a non-bound object which supports [[HasInstance]]
- * (which here just means DUK_HOBJECT_FLAG_CALLABLE). Move on
- * to execute E5 Section 15.3.5.3.
- */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func));
- DUK_ASSERT(DUK_HOBJECT_IS_CALLABLE(func));
-
- /* [ ... lval rval(func) ] */
-
- /* Handle lightfuncs through object coercion for now. */
- /* XXX: direct implementation */
- val = duk_get_hobject_or_lfunc_coerce(ctx, -2);
- if (!val) {
- goto pop_and_false;
- }
-
- duk_get_prop_stridx(ctx, -1, DUK_STRIDX_PROTOTYPE); /* -> [ ... lval rval rval.prototype ] */
- proto = duk_require_hobject(ctx, -1);
- duk_pop(ctx); /* -> [ ... lval rval ] */
-
- DUK_ASSERT(val != NULL);
-
-#if defined(DUK_USE_ES6_PROXY)
- val = duk_hobject_resolve_proxy_target(thr, val);
- DUK_ASSERT(val != NULL);
-#endif
-
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- do {
- /*
- * Note: prototype chain is followed BEFORE first comparison. This
- * means that the instanceof lval is never itself compared to the
- * rval.prototype property. This is apparently intentional, see E5
- * Section 15.3.5.3, step 4.a.
- *
- * Also note:
- *
- * js> (function() {}) instanceof Function
- * true
- * js> Function instanceof Function
- * true
- *
- * For the latter, h_proto will be Function.prototype, which is the
- * built-in Function prototype. Because Function.[[Prototype]] is
- * also the built-in Function prototype, the result is true.
- */
-
- DUK_ASSERT(val != NULL);
- val = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, val);
-
- if (!val) {
- goto pop_and_false;
- }
-
- DUK_ASSERT(val != NULL);
-#if defined(DUK_USE_ES6_PROXY)
- val = duk_hobject_resolve_proxy_target(thr, val);
-#endif
-
- if (val == proto) {
- goto pop_and_true;
- }
-
- /* follow prototype chain */
- } while (--sanity > 0);
-
- if (sanity == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- DUK_UNREACHABLE();
-
- pop_and_false:
- duk_pop_2(ctx);
- return 0;
-
- pop_and_true:
- duk_pop_2(ctx);
- return 1;
-}
-
-/*
- * in
- */
-
-/*
- * E5 Sections 11.8.7, 8.12.6.
- *
- * Basically just a property existence check using [[HasProperty]].
- */
-
-DUK_INTERNAL duk_bool_t duk_js_in(duk_hthread *thr, duk_tval *tv_x, duk_tval *tv_y) {
- duk_context *ctx = (duk_context *) thr;
- duk_bool_t retval;
-
- /*
- * Get the values onto the stack first. It would be possible to cover
- * some normal cases without resorting to the value stack (e.g. if
- * lval is already a string).
- */
-
- /* XXX: The ES5/5.1/6 specifications require that the key in 'key in obj'
- * must be string coerced before the internal HasProperty() algorithm is
- * invoked. A fast path skipping coercion could be safely implemented for
- * numbers (as number-to-string coercion has no side effects). For ES6
- * proxy behavior, the trap 'key' argument must be in a string coerced
- * form (which is a shame).
- */
-
- /* TypeError if rval is not an object (or lightfunc which should behave
- * like a Function instance).
- */
- duk_push_tval(ctx, tv_x);
- duk_push_tval(ctx, tv_y);
- duk_require_type_mask(ctx, -1, DUK_TYPE_MASK_OBJECT | DUK_TYPE_MASK_LIGHTFUNC);
- duk_to_string(ctx, -2); /* coerce lval with ToString() */
-
- retval = duk_hobject_hasprop(thr,
- DUK_GET_TVAL_NEGIDX(ctx, -1),
- DUK_GET_TVAL_NEGIDX(ctx, -2));
-
- duk_pop_2(ctx);
- return retval;
-}
-
-/*
- * typeof
- *
- * E5 Section 11.4.3.
- *
- * Very straightforward. The only question is what to return for our
- * non-standard tag / object types.
- *
- * There is an unfortunate string constant define naming problem with
- * typeof return values for e.g. "Object" and "object"; careful with
- * the built-in string defines. The LC_XXX defines are used for the
- * lowercase variants now.
- */
-
-DUK_INTERNAL duk_hstring *duk_js_typeof(duk_hthread *thr, duk_tval *tv_x) {
- duk_small_int_t stridx = 0;
-
- DUK_UNREF(thr);
-
- switch (DUK_TVAL_GET_TAG(tv_x)) {
- case DUK_TAG_UNDEFINED: {
- stridx = DUK_STRIDX_LC_UNDEFINED;
- break;
- }
- case DUK_TAG_NULL: {
- /* Note: not a typo, "object" is returned for a null value */
- stridx = DUK_STRIDX_LC_OBJECT;
- break;
- }
- case DUK_TAG_BOOLEAN: {
- stridx = DUK_STRIDX_LC_BOOLEAN;
- break;
- }
- case DUK_TAG_POINTER: {
- /* implementation specific */
- stridx = DUK_STRIDX_LC_POINTER;
- break;
- }
- case DUK_TAG_STRING: {
- stridx = DUK_STRIDX_LC_STRING;
- break;
- }
- case DUK_TAG_OBJECT: {
- duk_hobject *obj = DUK_TVAL_GET_OBJECT(tv_x);
- DUK_ASSERT(obj != NULL);
- if (DUK_HOBJECT_IS_CALLABLE(obj)) {
- stridx = DUK_STRIDX_LC_FUNCTION;
- } else {
- stridx = DUK_STRIDX_LC_OBJECT;
- }
- break;
- }
- case DUK_TAG_BUFFER: {
- /* implementation specific */
- stridx = DUK_STRIDX_LC_BUFFER;
- break;
- }
- case DUK_TAG_LIGHTFUNC: {
- stridx = DUK_STRIDX_LC_FUNCTION;
- break;
- }
-#if defined(DUK_USE_FASTINT)
- case DUK_TAG_FASTINT:
-#endif
- default: {
- /* number */
- DUK_ASSERT(!DUK_TVAL_IS_UNUSED(tv_x));
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv_x));
- stridx = DUK_STRIDX_LC_NUMBER;
- break;
- }
- }
-
- DUK_ASSERT(stridx >= 0 && stridx < DUK_HEAP_NUM_STRINGS);
- return DUK_HTHREAD_GET_STRING(thr, stridx);
-}
-
-/*
- * Array index and length
- *
- * Array index: E5 Section 15.4
- * Array length: E5 Section 15.4.5.1 steps 3.c - 3.d (array length write)
- *
- * The DUK_HSTRING_GET_ARRIDX_SLOW() and DUK_HSTRING_GET_ARRIDX_FAST() macros
- * call duk_js_to_arrayindex_string_helper().
- */
-
-DUK_INTERNAL duk_small_int_t duk_js_to_arrayindex_raw_string(const duk_uint8_t *str, duk_uint32_t blen, duk_uarridx_t *out_idx) {
- duk_uarridx_t res, new_res;
-
- if (blen == 0 || blen > 10) {
- goto parse_fail;
- }
- if (str[0] == (duk_uint8_t) '0' && blen > 1) {
- goto parse_fail;
- }
-
- /* Accept 32-bit decimal integers, no leading zeroes, signs, etc.
- * Leading zeroes are not accepted (zero index "0" is an exception
- * handled above).
- */
-
- res = 0;
- while (blen-- > 0) {
- duk_uint8_t c = *str++;
- if (c >= (duk_uint8_t) '0' && c <= (duk_uint8_t) '9') {
- new_res = res * 10 + (duk_uint32_t) (c - (duk_uint8_t) '0');
- if (new_res < res) {
- /* overflow, more than 32 bits -> not an array index */
- goto parse_fail;
- }
- res = new_res;
- } else {
- goto parse_fail;
- }
- }
-
- *out_idx = res;
- return 1;
-
- parse_fail:
- *out_idx = DUK_HSTRING_NO_ARRAY_INDEX;
- return 0;
-}
-
-/* Called by duk_hstring.h macros */
-DUK_INTERNAL duk_uarridx_t duk_js_to_arrayindex_string_helper(duk_hstring *h) {
- duk_uarridx_t res;
- duk_small_int_t rc;
-
- if (!DUK_HSTRING_HAS_ARRIDX(h)) {
- return DUK_HSTRING_NO_ARRAY_INDEX;
- }
-
- rc = duk_js_to_arrayindex_raw_string(DUK_HSTRING_GET_DATA(h),
- DUK_HSTRING_GET_BYTELEN(h),
- &res);
- DUK_UNREF(rc);
- DUK_ASSERT(rc != 0);
- return res;
-}
-#line 1 "duk_js_var.c"
-/*
- * Identifier access and function closure handling.
- *
- * Provides the primitives for slow path identifier accesses: GETVAR,
- * PUTVAR, DELVAR, etc. The fast path, direct register accesses, should
- * be used for most identifier accesses. Consequently, these slow path
- * primitives should be optimized for maximum compactness.
- *
- * Ecmascript environment records (declarative and object) are represented
- * as internal objects with control keys. Environment records have a
- * parent record ("outer environment reference") which is represented by
- * the implicit prototype for technical reasons (in other words, it is a
- * convenient field). The prototype chain is not followed in the ordinary
- * sense for variable lookups.
- *
- * See identifier-handling.rst for more details on the identifier algorithms
- * and the internal representation. See function-objects.rst for details on
- * what function templates and instances are expected to look like.
- *
- * Care must be taken to avoid duk_tval pointer invalidation caused by
- * e.g. value stack or object resizing.
- *
- * TODO: properties for function instances could be initialized much more
- * efficiently by creating a property allocation for a certain size and
- * filling in keys and values directly (and INCREFing both with "bulk incref"
- * primitives.
- *
- * XXX: duk_hobject_getprop() and duk_hobject_putprop() calls are a bit
- * awkward (especially because they follow the prototype chain); rework
- * if "raw" own property helpers are added.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Local result type for duk__get_identifier_reference() lookup.
- */
-
-typedef struct {
- duk_hobject *holder; /* for object-bound identifiers */
- duk_tval *value; /* for register-bound and declarative env identifiers */
- duk_int_t attrs; /* property attributes for identifier (relevant if value != NULL) */
- duk_tval *this_binding;
- duk_hobject *env;
-} duk__id_lookup_result;
-
-/*
- * Create a new function object based on a "template function" which contains
- * compiled bytecode, constants, etc, but lacks a lexical environment.
- *
- * Ecmascript requires that each created closure is a separate object, with
- * its own set of editable properties. However, structured property values
- * (such as the formal arguments list and the variable map) are shared.
- * Also the bytecode, constants, and inner functions are shared.
- *
- * See E5 Section 13.2 for detailed requirements on the function objects;
- * there are no similar requirements for function "templates" which are an
- * implementation dependent internal feature. Also see function-objects.rst
- * for a discussion on the function instance properties provided by this
- * implementation.
- *
- * Notes:
- *
- * * Order of internal properties should match frequency of use, since the
- * properties will be linearly scanned on lookup (functions usually don't
- * have enough properties to warrant a hash part).
- *
- * * The created closure is independent of its template; they do share the
- * same 'data' buffer object, but the template object itself can be freed
- * even if the closure object remains reachable.
- */
-
-DUK_LOCAL void duk__inc_data_inner_refcounts(duk_hthread *thr, duk_hcompiledfunction *f) {
- duk_tval *tv, *tv_end;
- duk_hobject **funcs, **funcs_end;
-
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, f) != NULL); /* compiled functions must be created 'atomically' */
- DUK_UNREF(thr);
-
- tv = DUK_HCOMPILEDFUNCTION_GET_CONSTS_BASE(thr->heap, f);
- tv_end = DUK_HCOMPILEDFUNCTION_GET_CONSTS_END(thr->heap, f);
- while (tv < tv_end) {
- DUK_TVAL_INCREF(thr, tv);
- tv++;
- }
-
- funcs = DUK_HCOMPILEDFUNCTION_GET_FUNCS_BASE(thr->heap, f);
- funcs_end = DUK_HCOMPILEDFUNCTION_GET_FUNCS_END(thr->heap, f);
- while (funcs < funcs_end) {
- DUK_HEAPHDR_INCREF(thr, (duk_heaphdr *) *funcs);
- funcs++;
- }
-}
-
-/* Push a new closure on the stack.
- *
- * Note: if fun_temp has NEWENV, i.e. a new lexical and variable declaration
- * is created when the function is called, only outer_lex_env matters
- * (outer_var_env is ignored and may or may not be same as outer_lex_env).
- */
-
-DUK_LOCAL const duk_uint16_t duk__closure_copy_proplist[] = {
- /* order: most frequent to least frequent */
- DUK_STRIDX_INT_VARMAP,
- DUK_STRIDX_INT_FORMALS,
- DUK_STRIDX_NAME,
- DUK_STRIDX_INT_PC2LINE,
- DUK_STRIDX_FILE_NAME,
- DUK_STRIDX_INT_SOURCE
-};
-
-DUK_INTERNAL
-void duk_js_push_closure(duk_hthread *thr,
- duk_hcompiledfunction *fun_temp,
- duk_hobject *outer_var_env,
- duk_hobject *outer_lex_env,
- duk_bool_t add_auto_proto) {
- duk_context *ctx = (duk_context *) thr;
- duk_hcompiledfunction *fun_clos;
- duk_small_uint_t i;
- duk_uint_t len_value;
-
- DUK_ASSERT(fun_temp != NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, fun_temp) != NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, fun_temp) != NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, fun_temp) != NULL);
- DUK_ASSERT(outer_var_env != NULL);
- DUK_ASSERT(outer_lex_env != NULL);
- DUK_UNREF(len_value);
-
- duk_push_compiledfunction(ctx);
- duk_push_hobject(ctx, &fun_temp->obj); /* -> [ ... closure template ] */
-
- fun_clos = (duk_hcompiledfunction *) duk_get_hcompiledfunction(ctx, -2);
- DUK_ASSERT(fun_clos != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION((duk_hobject *) fun_clos));
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, fun_clos) == NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, fun_clos) == NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, fun_clos) == NULL);
-
- DUK_HCOMPILEDFUNCTION_SET_DATA(thr->heap, fun_clos, DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, fun_temp));
- DUK_HCOMPILEDFUNCTION_SET_FUNCS(thr->heap, fun_clos, DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, fun_temp));
- DUK_HCOMPILEDFUNCTION_SET_BYTECODE(thr->heap, fun_clos, DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, fun_temp));
-
- /* Note: all references inside 'data' need to get their refcounts
- * upped too. This is the case because refcounts are decreased
- * through every function referencing 'data' independently.
- */
-
- DUK_HBUFFER_INCREF(thr, DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, fun_clos));
- duk__inc_data_inner_refcounts(thr, fun_temp);
-
- fun_clos->nregs = fun_temp->nregs;
- fun_clos->nargs = fun_temp->nargs;
-#if defined(DUK_USE_DEBUGGER_SUPPORT)
- fun_clos->start_line = fun_temp->start_line;
- fun_clos->end_line = fun_temp->end_line;
-#endif
-
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_DATA(thr->heap, fun_clos) != NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_FUNCS(thr->heap, fun_clos) != NULL);
- DUK_ASSERT(DUK_HCOMPILEDFUNCTION_GET_BYTECODE(thr->heap, fun_clos) != NULL);
-
- /* XXX: could also copy from template, but there's no way to have any
- * other value here now (used code has no access to the template).
- */
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, &fun_clos->obj, thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
-
- /*
- * Init/assert flags, copying them where appropriate. Some flags
- * (like NEWENV) are processed separately below.
- */
-
- /* XXX: copy flags using a mask */
-
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(&fun_clos->obj));
- DUK_HOBJECT_SET_CONSTRUCTABLE(&fun_clos->obj); /* Note: not set in template (has no "prototype") */
- DUK_ASSERT(DUK_HOBJECT_HAS_CONSTRUCTABLE(&fun_clos->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(&fun_clos->obj));
- DUK_ASSERT(DUK_HOBJECT_HAS_COMPILEDFUNCTION(&fun_clos->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_NATIVEFUNCTION(&fun_clos->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_THREAD(&fun_clos->obj));
- /* DUK_HOBJECT_FLAG_ARRAY_PART: don't care */
- if (DUK_HOBJECT_HAS_STRICT(&fun_temp->obj)) {
- DUK_HOBJECT_SET_STRICT(&fun_clos->obj);
- }
- if (DUK_HOBJECT_HAS_NOTAIL(&fun_temp->obj)) {
- DUK_HOBJECT_SET_NOTAIL(&fun_clos->obj);
- }
- /* DUK_HOBJECT_FLAG_NEWENV: handled below */
- if (DUK_HOBJECT_HAS_NAMEBINDING(&fun_temp->obj)) {
- /* Although NAMEBINDING is not directly needed for using
- * function instances, it's needed by bytecode dump/load
- * so copy it too.
- */
- DUK_HOBJECT_SET_NAMEBINDING(&fun_clos->obj);
- }
- if (DUK_HOBJECT_HAS_CREATEARGS(&fun_temp->obj)) {
- DUK_HOBJECT_SET_CREATEARGS(&fun_clos->obj);
- }
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(&fun_clos->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_STRINGOBJ(&fun_clos->obj));
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARGUMENTS(&fun_clos->obj));
-
- /*
- * Setup environment record properties based on the template and
- * its flags.
- *
- * If DUK_HOBJECT_HAS_NEWENV(fun_temp) is true, the environment
- * records represent identifiers "outside" the function; the
- * "inner" environment records are created on demand. Otherwise,
- * the environment records are those that will be directly used
- * (e.g. for declarations).
- *
- * _Lexenv is always set; _Varenv defaults to _Lexenv if missing,
- * so _Varenv is only set if _Lexenv != _Varenv.
- *
- * This is relatively complex, see doc/identifier-handling.rst.
- */
-
- if (DUK_HOBJECT_HAS_NEWENV(&fun_temp->obj)) {
- DUK_HOBJECT_SET_NEWENV(&fun_clos->obj);
-
- if (DUK_HOBJECT_HAS_NAMEBINDING(&fun_temp->obj)) {
- duk_hobject *proto;
-
- /*
- * Named function expression, name needs to be bound
- * in an intermediate environment record. The "outer"
- * lexical/variable environment will thus be:
- *
- * a) { funcname: <func>, __prototype: outer_lex_env }
- * b) { funcname: <func>, __prototype: <globalenv> } (if outer_lex_env missing)
- */
-
- DUK_ASSERT(duk_has_prop_stridx(ctx, -1, DUK_STRIDX_NAME)); /* required if NAMEBINDING set */
-
- if (outer_lex_env) {
- proto = outer_lex_env;
- } else {
- proto = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- }
-
- /* -> [ ... closure template env ] */
- (void) duk_push_object_helper_proto(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
- proto);
-
- /* It's important that duk_xdef_prop() is a 'raw define' so that any
- * properties in an ancestor are never an issue (they should never be
- * e.g. non-writable, but just in case).
- */
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_NAME); /* -> [ ... closure template env funcname ] */
- duk_dup(ctx, -4); /* -> [ ... closure template env funcname closure ] */
- duk_xdef_prop(ctx, -3, DUK_PROPDESC_FLAGS_NONE); /* -> [ ... closure template env ] */
- /* env[funcname] = closure */
-
- /* [ ... closure template env ] */
-
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_LEXENV, DUK_PROPDESC_FLAGS_WC);
- /* since closure has NEWENV, never define DUK_STRIDX_INT_VARENV, as it
- * will be ignored anyway
- */
-
- /* [ ... closure template ] */
- } else {
- /*
- * Other cases (function declaration, anonymous function expression,
- * strict direct eval code). The "outer" environment will be whatever
- * the caller gave us.
- */
-
- duk_push_hobject(ctx, outer_lex_env); /* -> [ ... closure template env ] */
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_LEXENV, DUK_PROPDESC_FLAGS_WC);
- /* since closure has NEWENV, never define DUK_STRIDX_INT_VARENV, as it
- * will be ignored anyway
- */
-
- /* [ ... closure template ] */
- }
- } else {
- /*
- * Function gets no new environment when called. This is the
- * case for global code, indirect eval code, and non-strict
- * direct eval code. There is no direct correspondence to the
- * E5 specification, as global/eval code is not exposed as a
- * function.
- */
-
- DUK_ASSERT(!DUK_HOBJECT_HAS_NAMEBINDING(&fun_temp->obj));
-
- duk_push_hobject(ctx, outer_lex_env); /* -> [ ... closure template env ] */
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_LEXENV, DUK_PROPDESC_FLAGS_WC);
-
- if (outer_var_env != outer_lex_env) {
- duk_push_hobject(ctx, outer_var_env); /* -> [ ... closure template env ] */
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_VARENV, DUK_PROPDESC_FLAGS_WC);
- }
- }
-#ifdef DUK_USE_DDDPRINT
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_INT_VARENV);
- duk_get_prop_stridx(ctx, -3, DUK_STRIDX_INT_LEXENV);
- DUK_DDD(DUK_DDDPRINT("closure varenv -> %!ipT, lexenv -> %!ipT",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
- duk_pop_2(ctx);
-#endif
-
- /*
- * Copy some internal properties directly
- *
- * The properties will be writable and configurable, but not enumerable.
- */
-
- /* [ ... closure template ] */
-
- DUK_DDD(DUK_DDDPRINT("copying properties: closure=%!iT, template=%!iT",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- for (i = 0; i < (duk_small_uint_t) (sizeof(duk__closure_copy_proplist) / sizeof(duk_uint16_t)); i++) {
- duk_small_int_t stridx = (duk_small_int_t) duk__closure_copy_proplist[i];
- if (duk_get_prop_stridx(ctx, -1, stridx)) {
- /* [ ... closure template val ] */
- DUK_DDD(DUK_DDDPRINT("copying property, stridx=%ld -> found", (long) stridx));
- duk_xdef_prop_stridx(ctx, -3, stridx, DUK_PROPDESC_FLAGS_WC);
- } else {
- DUK_DDD(DUK_DDDPRINT("copying property, stridx=%ld -> not found", (long) stridx));
- duk_pop(ctx);
- }
- }
-
- /*
- * "length" maps to number of formals (E5 Section 13.2) for function
- * declarations/expressions (non-bound functions). Note that 'nargs'
- * is NOT necessarily equal to the number of arguments.
- */
-
- /* [ ... closure template ] */
-
- len_value = 0;
-
- /* XXX: use helper for size optimization */
- if (duk_get_prop_stridx(ctx, -2, DUK_STRIDX_INT_FORMALS)) {
- /* [ ... closure template formals ] */
- DUK_ASSERT(duk_has_prop_stridx(ctx, -1, DUK_STRIDX_LENGTH));
- DUK_ASSERT(duk_get_length(ctx, -1) <= DUK_UINT_MAX); /* formal arg limits */
- len_value = (duk_uint_t) duk_get_length(ctx, -1);
- } else {
- /* XXX: what to do if _Formals is not empty but compiler has
- * optimized it away -- read length from an explicit property
- * then?
- */
- }
- duk_pop(ctx);
-
- duk_push_uint(ctx, len_value); /* [ ... closure template len_value ] */
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_LENGTH, DUK_PROPDESC_FLAGS_NONE);
-
- /*
- * "prototype" is, by default, a fresh object with the "constructor"
- * property.
- *
- * Note that this creates a circular reference for every function
- * instance (closure) which prevents refcount-based collection of
- * function instances.
- *
- * XXX: Try to avoid creating the default prototype object, because
- * many functions are not used as constructors and the default
- * prototype is unnecessary. Perhaps it could be created on-demand
- * when it is first accessed?
- */
-
- /* [ ... closure template ] */
-
- if (add_auto_proto) {
- duk_push_object(ctx); /* -> [ ... closure template newobj ] */
- duk_dup(ctx, -3); /* -> [ ... closure template newobj closure ] */
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_CONSTRUCTOR, DUK_PROPDESC_FLAGS_WC); /* -> [ ... closure template newobj ] */
- duk_compact(ctx, -1); /* compact the prototype */
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_PROTOTYPE, DUK_PROPDESC_FLAGS_W); /* -> [ ... closure template ] */
- }
-
- /*
- * "arguments" and "caller" must be mapped to throwers for strict
- * mode and bound functions (E5 Section 15.3.5).
- *
- * XXX: This is expensive to have for every strict function instance.
- * Try to implement as virtual properties or on-demand created properties.
- */
-
- /* [ ... closure template ] */
-
- if (DUK_HOBJECT_HAS_STRICT(&fun_clos->obj)) {
- duk_xdef_prop_stridx_thrower(ctx, -2, DUK_STRIDX_CALLER, DUK_PROPDESC_FLAGS_NONE);
- duk_xdef_prop_stridx_thrower(ctx, -2, DUK_STRIDX_LC_ARGUMENTS, DUK_PROPDESC_FLAGS_NONE);
- } else {
-#ifdef DUK_USE_NONSTD_FUNC_CALLER_PROPERTY
- DUK_DDD(DUK_DDDPRINT("function is non-strict and non-standard 'caller' property in use, add initial 'null' value"));
- duk_push_null(ctx);
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_CALLER, DUK_PROPDESC_FLAGS_NONE);
-#else
- DUK_DDD(DUK_DDDPRINT("function is non-strict and non-standard 'caller' property not used"));
-#endif
- }
-
- /*
- * "name" is a non-standard property found in at least V8, Rhino, smjs.
- * For Rhino and smjs it is non-writable, non-enumerable, and non-configurable;
- * for V8 it is writable, non-enumerable, non-configurable. It is also defined
- * for an anonymous function expression in which case the value is an empty string.
- * We could also leave name 'undefined' for anonymous functions but that would
- * differ from behavior of other engines, so use an empty string.
- *
- * XXX: make optional? costs something per function.
- */
-
- /* [ ... closure template ] */
-
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_NAME)) {
- /* [ ... closure template name ] */
- DUK_ASSERT(duk_is_string(ctx, -1));
- } else {
- /* [ ... closure template undefined ] */
- duk_pop(ctx);
- duk_push_hstring_stridx(ctx, DUK_STRIDX_EMPTY_STRING);
- }
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_NAME, DUK_PROPDESC_FLAGS_NONE); /* -> [ ... closure template ] */
-
- /*
- * Compact the closure, in most cases no properties will be added later.
- * Also, without this the closures end up having unused property slots
- * (e.g. in Duktape 0.9.0, 8 slots would be allocated and only 7 used).
- * A better future solution would be to allocate the closure directly
- * to correct size (and setup the properties directly without going
- * through the API).
- */
-
- duk_compact(ctx, -2);
-
- /*
- * Some assertions (E5 Section 13.2).
- */
-
- DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(&fun_clos->obj) == DUK_HOBJECT_CLASS_FUNCTION);
- DUK_ASSERT(DUK_HOBJECT_GET_PROTOTYPE(thr->heap, &fun_clos->obj) == thr->builtins[DUK_BIDX_FUNCTION_PROTOTYPE]);
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(&fun_clos->obj));
- DUK_ASSERT(duk_has_prop_stridx(ctx, -2, DUK_STRIDX_LENGTH) != 0);
- DUK_ASSERT(add_auto_proto == 0 || duk_has_prop_stridx(ctx, -2, DUK_STRIDX_PROTOTYPE) != 0);
- DUK_ASSERT(duk_has_prop_stridx(ctx, -2, DUK_STRIDX_NAME) != 0); /* non-standard */
- DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(&fun_clos->obj) ||
- duk_has_prop_stridx(ctx, -2, DUK_STRIDX_CALLER) != 0);
- DUK_ASSERT(!DUK_HOBJECT_HAS_STRICT(&fun_clos->obj) ||
- duk_has_prop_stridx(ctx, -2, DUK_STRIDX_LC_ARGUMENTS) != 0);
-
- /*
- * Finish
- */
-
- /* [ ... closure template ] */
-
- DUK_DDD(DUK_DDDPRINT("created function instance: template=%!iT -> closure=%!iT",
- (duk_tval *) duk_get_tval(ctx, -1),
- (duk_tval *) duk_get_tval(ctx, -2)));
-
- duk_pop(ctx);
-
- /* [ ... closure ] */
-}
-
-/*
- * Delayed activation environment record initialization (for functions
- * with NEWENV).
- *
- * The non-delayed initialization is handled by duk_handle_call().
- */
-
-/* shared helper */
-DUK_INTERNAL
-duk_hobject *duk_create_activation_environment_record(duk_hthread *thr,
- duk_hobject *func,
- duk_size_t idx_bottom) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *env;
- duk_hobject *parent;
- duk_tval *tv;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(func != NULL);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_LEXENV(thr));
- if (tv) {
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(DUK_TVAL_GET_OBJECT(tv)));
- parent = DUK_TVAL_GET_OBJECT(tv);
- } else {
- parent = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- }
-
- (void) duk_push_object_helper(ctx,
- DUK_HOBJECT_FLAG_EXTENSIBLE |
- DUK_HOBJECT_CLASS_AS_FLAGS(DUK_HOBJECT_CLASS_DECENV),
- -1); /* no prototype, updated below */
- env = duk_require_hobject(ctx, -1);
- DUK_ASSERT(env != NULL);
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, env, parent); /* parent env is the prototype */
-
- /* open scope information, for compiled functions only */
-
- if (DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- duk_push_hthread(ctx, thr);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INT_THREAD);
- duk_push_hobject(ctx, func);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INT_CALLEE);
- duk_push_size_t(ctx, idx_bottom);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INT_REGBASE);
- }
-
- return env;
-}
-
-DUK_INTERNAL
-void duk_js_init_activation_environment_records_delayed(duk_hthread *thr,
- duk_activation *act) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *func;
- duk_hobject *env;
-
- func = DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_BOUND(func)); /* bound functions are never in act 'func' */
-
- /*
- * Delayed initialization only occurs for 'NEWENV' functions.
- */
-
- DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func));
- DUK_ASSERT(act->lex_env == NULL);
- DUK_ASSERT(act->var_env == NULL);
-
- env = duk_create_activation_environment_record(thr, func, act->idx_bottom);
- DUK_ASSERT(env != NULL);
-
- DUK_DDD(DUK_DDDPRINT("created delayed fresh env: %!ipO", (duk_heaphdr *) env));
-#ifdef DUK_USE_DDDPRINT
- {
- duk_hobject *p = env;
- while (p) {
- DUK_DDD(DUK_DDDPRINT(" -> %!ipO", (duk_heaphdr *) p));
- p = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, p);
- }
- }
-#endif
-
- act->lex_env = env;
- act->var_env = env;
- DUK_HOBJECT_INCREF(thr, env); /* XXX: incref by count (here 2 times) */
- DUK_HOBJECT_INCREF(thr, env);
-
- duk_pop(ctx);
-}
-
-/*
- * Closing environment records.
- *
- * The environment record MUST be closed with the thread where its activation
- * is. In other words (if 'env' is open):
- *
- * - 'thr' must match _env.thread
- * - 'func' must match _env.callee
- * - 'regbase' must match _env.regbase
- *
- * These are not looked up from the env to minimize code size.
- *
- * XXX: should access the own properties directly instead of using the API
- */
-
-DUK_INTERNAL void duk_js_close_environment_record(duk_hthread *thr, duk_hobject *env, duk_hobject *func, duk_size_t regbase) {
- duk_context *ctx = (duk_context *) thr;
- duk_uint_fast32_t i;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(env != NULL);
- /* func is NULL for lightfuncs */
-
- if (!DUK_HOBJECT_IS_DECENV(env) || DUK_HOBJECT_HAS_ENVRECCLOSED(env)) {
- DUK_DDD(DUK_DDDPRINT("environment record not a declarative record, "
- "or already closed: %!iO",
- (duk_heaphdr *) env));
- return;
- }
-
- DUK_DDD(DUK_DDDPRINT("closing environment record: %!iO, func: %!iO, regbase: %ld",
- (duk_heaphdr *) env, (duk_heaphdr *) func, (long) regbase));
-
- duk_push_hobject(ctx, env);
-
- /* assertions: env must be closed in the same thread as where it runs */
-#ifdef DUK_USE_ASSERTIONS
- {
- /* [... env] */
-
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_CALLEE)) {
- DUK_ASSERT(duk_is_object(ctx, -1));
- DUK_ASSERT(duk_get_hobject(ctx, -1) == (duk_hobject *) func);
- }
- duk_pop(ctx);
-
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_THREAD)) {
- DUK_ASSERT(duk_is_object(ctx, -1));
- DUK_ASSERT(duk_get_hobject(ctx, -1) == (duk_hobject *) thr);
- }
- duk_pop(ctx);
-
- if (duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_REGBASE)) {
- DUK_ASSERT(duk_is_number(ctx, -1));
- DUK_ASSERT(duk_get_number(ctx, -1) == (double) regbase);
- }
- duk_pop(ctx);
-
- /* [... env] */
- }
-#endif
-
- if (func != NULL && DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- duk_hobject *varmap;
- duk_hstring *key;
- duk_tval *tv;
- duk_uint_t regnum;
-
- /* XXX: additional conditions when to close variables? we don't want to do it
- * unless the environment may have "escaped" (referenced in a function closure).
- * With delayed environments, the existence is probably good enough of a check.
- */
-
- /* XXX: any way to detect faster whether something needs to be closed?
- * We now look up _Callee and then skip the rest.
- */
-
- /* Note: we rely on the _Varmap having a bunch of nice properties, like:
- * - being compacted and unmodified during this process
- * - not containing an array part
- * - having correct value types
- */
-
- /* [... env] */
-
- if (!duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_CALLEE)) {
- DUK_DDD(DUK_DDDPRINT("env has no callee property, nothing to close; re-delete the control properties just in case"));
- duk_pop(ctx);
- goto skip_varmap;
- }
-
- /* [... env callee] */
-
- if (!duk_get_prop_stridx(ctx, -1, DUK_STRIDX_INT_VARMAP)) {
- DUK_DDD(DUK_DDDPRINT("callee has no varmap property, nothing to close; delete the control properties"));
- duk_pop_2(ctx);
- goto skip_varmap;
- }
- varmap = duk_require_hobject(ctx, -1);
- DUK_ASSERT(varmap != NULL);
-
- DUK_DDD(DUK_DDDPRINT("varmap: %!O", (duk_heaphdr *) varmap));
-
- /* [... env callee varmap] */
-
- DUK_DDD(DUK_DDDPRINT("copying bound register values, %ld bound regs", (long) DUK_HOBJECT_GET_ENEXT(varmap)));
-
- for (i = 0; i < (duk_uint_fast32_t) DUK_HOBJECT_GET_ENEXT(varmap); i++) {
- key = DUK_HOBJECT_E_GET_KEY(thr->heap, varmap, i);
- DUK_ASSERT(key != NULL); /* assume keys are compacted */
-
- DUK_ASSERT(!DUK_HOBJECT_E_SLOT_IS_ACCESSOR(thr->heap, varmap, i)); /* assume plain values */
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, varmap, i);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv)); /* assume value is a number */
- regnum = (duk_uint_t) DUK_TVAL_GET_NUMBER(tv);
- DUK_ASSERT_DISABLE(regnum >= 0); /* unsigned */
- DUK_ASSERT(regnum < ((duk_hcompiledfunction *) func)->nregs); /* regnum is sane */
- DUK_ASSERT(thr->valstack + regbase + regnum >= thr->valstack);
- DUK_ASSERT(thr->valstack + regbase + regnum < thr->valstack_top);
-
- /* XXX: slightly awkward */
- duk_push_hstring(ctx, key);
- duk_push_tval(ctx, thr->valstack + regbase + regnum);
- DUK_DDD(DUK_DDDPRINT("closing identifier '%s' -> reg %ld, value %!T",
- (const char *) duk_require_string(ctx, -2),
- (long) regnum,
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /* [... env callee varmap key val] */
-
- /* if property already exists, overwrites silently */
- duk_xdef_prop(ctx, -5, DUK_PROPDESC_FLAGS_WE); /* writable but not deletable */
- }
-
- duk_pop_2(ctx);
-
- /* [... env] */
- }
-
- skip_varmap:
-
- /* [... env] */
-
- duk_del_prop_stridx(ctx, -1, DUK_STRIDX_INT_CALLEE);
- duk_del_prop_stridx(ctx, -1, DUK_STRIDX_INT_THREAD);
- duk_del_prop_stridx(ctx, -1, DUK_STRIDX_INT_REGBASE);
-
- duk_pop(ctx);
-
- DUK_HOBJECT_SET_ENVRECCLOSED(env);
-
- DUK_DDD(DUK_DDDPRINT("environment record after being closed: %!O",
- (duk_heaphdr *) env));
-}
-
-/*
- * GETIDREF: a GetIdentifierReference-like helper.
- *
- * Provides a parent traversing lookup and a single level lookup
- * (for HasBinding).
- *
- * Instead of returning the value, returns a bunch of values allowing
- * the caller to read, write, or delete the binding. Value pointers
- * are duk_tval pointers which can be mutated directly as long as
- * refcounts are properly updated. Note that any operation which may
- * reallocate valstacks or compact objects may invalidate the returned
- * duk_tval (but not object) pointers, so caller must be very careful.
- *
- * If starting environment record 'env' is given, 'act' is ignored.
- * However, if 'env' is NULL, the caller may identify, in 'act', an
- * activation which hasn't had its declarative environment initialized
- * yet. The activation registers are then looked up, and its parent
- * traversed normally.
- *
- * The 'out' structure values are only valid if the function returns
- * success (non-zero).
- */
-
-/* lookup name from an open declarative record's registers */
-DUK_LOCAL
-duk_bool_t duk__getid_open_decl_env_regs(duk_hthread *thr,
- duk_hstring *name,
- duk_hobject *env,
- duk__id_lookup_result *out) {
- duk_hthread *env_thr;
- duk_hobject *env_func;
- duk_size_t env_regbase;
- duk_hobject *varmap;
- duk_tval *tv;
- duk_size_t reg_rel;
- duk_size_t idx;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(name != NULL);
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(out != NULL);
-
- DUK_ASSERT(DUK_HOBJECT_IS_DECENV(env));
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_CALLEE(thr));
- if (!tv) {
- /* env is closed, should be missing _Callee, _Thread, _Regbase */
- DUK_ASSERT(duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_CALLEE(thr)) == NULL);
- DUK_ASSERT(duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_THREAD(thr)) == NULL);
- DUK_ASSERT(duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_REGBASE(thr)) == NULL);
- return 0;
- }
-
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_TVAL_GET_OBJECT(tv) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_COMPILEDFUNCTION(DUK_TVAL_GET_OBJECT(tv)));
- env_func = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(env_func != NULL);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env_func, DUK_HTHREAD_STRING_INT_VARMAP(thr));
- if (!tv) {
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- varmap = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(varmap != NULL);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, varmap, name);
- if (!tv) {
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- reg_rel = (duk_size_t) DUK_TVAL_GET_NUMBER(tv);
- DUK_ASSERT_DISABLE(reg_rel >= 0); /* unsigned */
- DUK_ASSERT(reg_rel < ((duk_hcompiledfunction *) env_func)->nregs);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_THREAD(thr));
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- DUK_ASSERT(DUK_TVAL_GET_OBJECT(tv) != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_THREAD(DUK_TVAL_GET_OBJECT(tv)));
- env_thr = (duk_hthread *) DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(env_thr != NULL);
-
- /* Note: env_thr != thr is quite possible and normal, so careful
- * with what thread is used for valstack lookup.
- */
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_REGBASE(thr));
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- env_regbase = (duk_size_t) DUK_TVAL_GET_NUMBER(tv);
-
- idx = env_regbase + reg_rel;
- tv = env_thr->valstack + idx;
- DUK_ASSERT(tv >= env_thr->valstack && tv < env_thr->valstack_end); /* XXX: more accurate? */
-
- out->value = tv;
- out->attrs = DUK_PROPDESC_FLAGS_W; /* registers are mutable, non-deletable */
- out->this_binding = NULL; /* implicit this value always undefined for
- * declarative environment records.
- */
- out->env = env;
- out->holder = NULL;
-
- return 1;
-}
-
-/* lookup name from current activation record's functions' registers */
-DUK_LOCAL
-duk_bool_t duk__getid_activation_regs(duk_hthread *thr,
- duk_hstring *name,
- duk_activation *act,
- duk__id_lookup_result *out) {
- duk_tval *tv;
- duk_hobject *func;
- duk_hobject *varmap;
- duk_size_t reg_rel;
- duk_size_t idx;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(name != NULL);
- DUK_ASSERT(act != NULL);
- DUK_ASSERT(out != NULL);
-
- func = DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func));
-
- if (!DUK_HOBJECT_IS_COMPILEDFUNCTION(func)) {
- return 0;
- }
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_VARMAP(thr));
- if (!tv) {
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- varmap = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(varmap != NULL);
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, varmap, name);
- if (!tv) {
- return 0;
- }
- DUK_ASSERT(DUK_TVAL_IS_NUMBER(tv));
- reg_rel = (duk_size_t) DUK_TVAL_GET_NUMBER(tv);
- DUK_ASSERT_DISABLE(reg_rel >= 0);
- DUK_ASSERT(reg_rel < ((duk_hcompiledfunction *) func)->nregs);
-
- idx = act->idx_bottom + reg_rel;
- DUK_ASSERT(idx >= act->idx_bottom);
- tv = thr->valstack + idx;
-
- out->value = tv;
- out->attrs = DUK_PROPDESC_FLAGS_W; /* registers are mutable, non-deletable */
- out->this_binding = NULL; /* implicit this value always undefined for
- * declarative environment records.
- */
- out->env = NULL;
- out->holder = NULL;
-
- return 1;
-}
-
-DUK_LOCAL
-duk_bool_t duk__get_identifier_reference(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name,
- duk_activation *act,
- duk_bool_t parents,
- duk__id_lookup_result *out) {
- duk_tval *tv;
- duk_tval *tv_target;
- duk_tval tv_name;
- duk_uint_t sanity;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(env != NULL || act != NULL);
- DUK_ASSERT(name != NULL);
- DUK_ASSERT(out != NULL);
-
- DUK_ASSERT(!env || DUK_HOBJECT_IS_ENV(env));
- DUK_ASSERT(!env || !DUK_HOBJECT_HAS_ARRAY_PART(env));
-
- /*
- * Conceptually, we look for the identifier binding by starting from
- * 'env' and following to chain of environment records (represented
- * by the prototype chain).
- *
- * If 'env' is NULL, the current activation does not yet have an
- * allocated declarative environment record; this should be treated
- * exactly as if the environment record existed but had no bindings
- * other than register bindings.
- *
- * Note: we assume that with the DUK_HOBJECT_FLAG_NEWENV cleared
- * the environment will always be initialized immediately; hence
- * a NULL 'env' should only happen with the flag set. This is the
- * case for: (1) function calls, and (2) strict, direct eval calls.
- */
-
- if (env == NULL && act != NULL) {
- duk_hobject *func;
-
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference: env is NULL, activation is non-NULL -> "
- "delayed env case, look up activation regs first"));
-
- /*
- * Try registers
- */
-
- if (duk__getid_activation_regs(thr, name, act, out)) {
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: "
- "name=%!O -> value=%!T, attrs=%ld, this=%!T, env=%!O, holder=%!O "
- "(found from register bindings when env=NULL)",
- (duk_heaphdr *) name, (duk_tval *) out->value,
- (long) out->attrs, (duk_tval *) out->this_binding,
- (duk_heaphdr *) out->env, (duk_heaphdr *) out->holder));
- return 1;
- }
-
- DUK_DDD(DUK_DDDPRINT("not found in current activation regs"));
-
- /*
- * Not found in registers, proceed to the parent record.
- * Here we need to determine what the parent would be,
- * if 'env' was not NULL (i.e. same logic as when initializing
- * the record).
- *
- * Note that environment initialization is only deferred when
- * DUK_HOBJECT_HAS_NEWENV is set, and this only happens for:
- * - Function code
- * - Strict eval code
- *
- * We only need to check _Lexenv here; _Varenv exists only if it
- * differs from _Lexenv (and thus _Lexenv will also be present).
- */
-
- if (!parents) {
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference failed, no parent traversal "
- "(not found from register bindings when env=NULL)"));
- goto fail_not_found;
- }
-
- func = DUK_ACT_GET_FUNC(act);
- DUK_ASSERT(func != NULL);
- DUK_ASSERT(DUK_HOBJECT_HAS_NEWENV(func));
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_LEXENV(thr));
- if (tv) {
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- env = DUK_TVAL_GET_OBJECT(tv);
- } else {
- DUK_ASSERT(duk_hobject_find_existing_entry_tval_ptr(thr->heap, func, DUK_HTHREAD_STRING_INT_VARENV(thr)) == NULL);
- env = thr->builtins[DUK_BIDX_GLOBAL_ENV];
- }
-
- DUK_DDD(DUK_DDDPRINT("continue lookup from env: %!iO",
- (duk_heaphdr *) env));
- }
-
- /*
- * Prototype walking starting from 'env'.
- *
- * ('act' is not needed anywhere here.)
- */
-
- sanity = DUK_HOBJECT_PROTOTYPE_CHAIN_SANITY;
- while (env != NULL) {
- duk_small_int_t cl;
- duk_int_t attrs;
-
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference, name=%!O, considering env=%p -> %!iO",
- (duk_heaphdr *) name,
- (void *) env,
- (duk_heaphdr *) env));
-
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(env));
- DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(env));
-
- cl = DUK_HOBJECT_GET_CLASS_NUMBER(env);
- DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV || cl == DUK_HOBJECT_CLASS_DECENV);
- if (cl == DUK_HOBJECT_CLASS_DECENV) {
- /*
- * Declarative environment record.
- *
- * Identifiers can never be stored in ancestors and are
- * always plain values, so we can use an internal helper
- * and access the value directly with an duk_tval ptr.
- *
- * A closed environment is only indicated by it missing
- * the "book-keeping" properties required for accessing
- * register-bound variables.
- */
-
- if (DUK_HOBJECT_HAS_ENVRECCLOSED(env)) {
- /* already closed */
- goto skip_regs;
- }
-
- if (duk__getid_open_decl_env_regs(thr, name, env, out)) {
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: "
- "name=%!O -> value=%!T, attrs=%ld, this=%!T, env=%!O, holder=%!O "
- "(declarative environment record, scope open, found in regs)",
- (duk_heaphdr *) name, (duk_tval *) out->value,
- (long) out->attrs, (duk_tval *) out->this_binding,
- (duk_heaphdr *) out->env, (duk_heaphdr *) out->holder));
- return 1;
- }
- skip_regs:
-
- tv = duk_hobject_find_existing_entry_tval_ptr_and_attrs(thr->heap, env, name, &attrs);
- if (tv) {
- out->value = tv;
- out->attrs = attrs;
- out->this_binding = NULL; /* implicit this value always undefined for
- * declarative environment records.
- */
- out->env = env;
- out->holder = env;
-
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: "
- "name=%!O -> value=%!T, attrs=%ld, this=%!T, env=%!O, holder=%!O "
- "(declarative environment record, found in properties)",
- (duk_heaphdr *) name, (duk_tval *) out->value,
- (long) out->attrs, (duk_tval *) out->this_binding,
- (duk_heaphdr *) out->env, (duk_heaphdr *) out->holder));
- return 1;
- }
- } else {
- /*
- * Object environment record.
- *
- * Binding (target) object is an external, uncontrolled object.
- * Identifier may be bound in an ancestor property, and may be
- * an accessor. Target can also be a Proxy which we must support
- * here.
- */
-
- /* XXX: we could save space by using _Target OR _This. If _Target, assume
- * this binding is undefined. If _This, assumes this binding is _This, and
- * target is also _This. One property would then be enough.
- */
-
- duk_hobject *target;
- duk_bool_t found;
-
- DUK_ASSERT(cl == DUK_HOBJECT_CLASS_OBJENV);
-
- tv_target = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr));
- DUK_ASSERT(tv_target != NULL);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv_target));
- target = DUK_TVAL_GET_OBJECT(tv_target);
- DUK_ASSERT(target != NULL);
-
- /* Target may be a Proxy or property may be an accessor, so we must
- * use an actual, Proxy-aware hasprop check here.
- *
- * out->holder is NOT set to the actual duk_hobject where the
- * property is found, but rather the object binding target object.
- */
-
- if (DUK_HOBJECT_HAS_EXOTIC_PROXYOBJ(target)) {
- DUK_ASSERT(name != NULL);
- DUK_TVAL_SET_STRING(&tv_name, name);
-
- found = duk_hobject_hasprop(thr, tv_target, &tv_name);
- } else {
- /* XXX: duk_hobject_hasprop() would be correct for
- * non-Proxy objects too, but it is about ~20-25%
- * slower at present so separate code paths for
- * Proxy and non-Proxy now.
- */
- found = duk_hobject_hasprop_raw(thr, target, name);
- }
-
- if (found) {
- out->value = NULL; /* can't get value, may be accessor */
- out->attrs = 0; /* irrelevant when out->value == NULL */
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_THIS(thr));
- out->this_binding = tv; /* may be NULL */
- out->env = env;
- out->holder = target;
-
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference successful: "
- "name=%!O -> value=%!T, attrs=%ld, this=%!T, env=%!O, holder=%!O "
- "(object environment record)",
- (duk_heaphdr *) name, (duk_tval *) out->value,
- (long) out->attrs, (duk_tval *) out->this_binding,
- (duk_heaphdr *) out->env, (duk_heaphdr *) out->holder));
- return 1;
- }
- }
-
- if (!parents) {
- DUK_DDD(DUK_DDDPRINT("duk__get_identifier_reference failed, no parent traversal "
- "(not found from first traversed env)"));
- goto fail_not_found;
- }
-
- if (sanity-- == 0) {
- DUK_ERROR_RANGE(thr, DUK_STR_PROTOTYPE_CHAIN_LIMIT);
- }
- env = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, env);
- };
-
- /*
- * Not found (even in global object)
- */
-
- fail_not_found:
- return 0;
-}
-
-/*
- * HASVAR: check identifier binding from a given environment record
- * without traversing its parents.
- *
- * This primitive is not exposed to user code as such, but is used
- * internally for e.g. declaration binding instantiation.
- *
- * See E5 Sections:
- * 10.2.1.1.1 HasBinding(N)
- * 10.2.1.2.1 HasBinding(N)
- *
- * Note: strictness has no bearing on this check. Hence we don't take
- * a 'strict' parameter.
- */
-
-#if 0 /*unused*/
-DUK_INTERNAL
-duk_bool_t duk_js_hasvar_envrec(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name) {
- duk__id_lookup_result ref;
- duk_bool_t parents;
-
- DUK_DDD(DUK_DDDPRINT("hasvar: thr=%p, env=%p, name=%!O "
- "(env -> %!dO)",
- (void *) thr, (void *) env, (duk_heaphdr *) name,
- (duk_heaphdr *) env));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(name != NULL);
-
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env);
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name);
-
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(env));
- DUK_ASSERT(!DUK_HOBJECT_HAS_ARRAY_PART(env));
-
- /* lookup results is ignored */
- parents = 0;
- return duk__get_identifier_reference(thr, env, name, NULL, parents, &ref);
-}
-#endif
-
-/*
- * GETVAR
- *
- * See E5 Sections:
- * 11.1.2 Identifier Reference
- * 10.3.1 Identifier Resolution
- * 11.13.1 Simple Assignment [example of where the Reference is GetValue'd]
- * 8.7.1 GetValue (V)
- * 8.12.1 [[GetOwnProperty]] (P)
- * 8.12.2 [[GetProperty]] (P)
- * 8.12.3 [[Get]] (P)
- *
- * If 'throw' is true, always leaves two values on top of stack: [val this].
- *
- * If 'throw' is false, returns 0 if identifier cannot be resolved, and the
- * stack will be unaffected in this case. If identifier is resolved, returns
- * 1 and leaves [val this] on top of stack.
- *
- * Note: the 'strict' flag of a reference returned by GetIdentifierReference
- * is ignored by GetValue. Hence we don't take a 'strict' parameter.
- *
- * The 'throw' flag is needed for implementing 'typeof' for an unreferenced
- * identifier. An unreference identifier in other contexts generates a
- * ReferenceError.
- */
-
-DUK_LOCAL
-duk_bool_t duk__getvar_helper(duk_hthread *thr,
- duk_hobject *env,
- duk_activation *act,
- duk_hstring *name,
- duk_bool_t throw_flag) {
- duk_context *ctx = (duk_context *) thr;
- duk__id_lookup_result ref;
- duk_tval tv_tmp_obj;
- duk_tval tv_tmp_key;
- duk_bool_t parents;
-
- DUK_DDD(DUK_DDDPRINT("getvar: thr=%p, env=%p, act=%p, name=%!O "
- "(env -> %!dO)",
- (void *) thr, (void *) env, (void *) act,
- (duk_heaphdr *) name, (duk_heaphdr *) env));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(name != NULL);
- /* env and act may be NULL */
-
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env);
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name);
-
- parents = 1; /* follow parent chain */
- if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) {
- if (ref.value) {
- DUK_ASSERT(ref.this_binding == NULL); /* always for register bindings */
- duk_push_tval(ctx, ref.value);
- duk_push_undefined(ctx);
- } else {
- DUK_ASSERT(ref.holder != NULL);
-
- /* Note: getprop may invoke any getter and invalidate any
- * duk_tval pointers, so this must be done first.
- */
-
- if (ref.this_binding) {
- duk_push_tval(ctx, ref.this_binding);
- } else {
- duk_push_undefined(ctx);
- }
-
- DUK_TVAL_SET_OBJECT(&tv_tmp_obj, ref.holder);
- DUK_TVAL_SET_STRING(&tv_tmp_key, name);
- (void) duk_hobject_getprop(thr, &tv_tmp_obj, &tv_tmp_key); /* [this value] */
-
- /* ref.value, ref.this.binding invalidated here by getprop call */
-
- duk_insert(ctx, -2); /* [this value] -> [value this] */
- }
-
- return 1;
- } else {
- if (throw_flag) {
- DUK_ERROR_FMT1(thr, DUK_ERR_REFERENCE_ERROR,
- "identifier '%s' undefined",
- (const char *) DUK_HSTRING_GET_DATA(name));
- }
-
- return 0;
- }
-}
-
-DUK_INTERNAL
-duk_bool_t duk_js_getvar_envrec(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name,
- duk_bool_t throw_flag) {
- return duk__getvar_helper(thr, env, NULL, name, throw_flag);
-}
-
-DUK_INTERNAL
-duk_bool_t duk_js_getvar_activation(duk_hthread *thr,
- duk_activation *act,
- duk_hstring *name,
- duk_bool_t throw_flag) {
- DUK_ASSERT(act != NULL);
- return duk__getvar_helper(thr, act->lex_env, act, name, throw_flag);
-}
-
-/*
- * PUTVAR
- *
- * See E5 Sections:
- * 11.1.2 Identifier Reference
- * 10.3.1 Identifier Resolution
- * 11.13.1 Simple Assignment [example of where the Reference is PutValue'd]
- * 8.7.2 PutValue (V,W) [see especially step 3.b, undefined -> automatic global in non-strict mode]
- * 8.12.4 [[CanPut]] (P)
- * 8.12.5 [[Put]] (P)
- *
- * Note: may invalidate any valstack (or object) duk_tval pointers because
- * putting a value may reallocate any object or any valstack. Caller beware.
- */
-
-DUK_LOCAL
-void duk__putvar_helper(duk_hthread *thr,
- duk_hobject *env,
- duk_activation *act,
- duk_hstring *name,
- duk_tval *val,
- duk_bool_t strict) {
- duk__id_lookup_result ref;
- duk_tval tv_tmp_obj;
- duk_tval tv_tmp_key;
- duk_bool_t parents;
-
- DUK_DDD(DUK_DDDPRINT("putvar: thr=%p, env=%p, act=%p, name=%!O, val=%p, strict=%ld "
- "(env -> %!dO, val -> %!T)",
- (void *) thr, (void *) env, (void *) act,
- (duk_heaphdr *) name, (void *) val, (long) strict,
- (duk_heaphdr *) env, (duk_tval *) val));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(name != NULL);
- DUK_ASSERT(val != NULL);
- /* env and act may be NULL */
-
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(env);
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name);
- DUK_ASSERT_REFCOUNT_NONZERO_TVAL(val);
-
- /*
- * In strict mode E5 protects 'eval' and 'arguments' from being
- * assigned to (or even declared anywhere). Attempt to do so
- * should result in a compile time SyntaxError. See the internal
- * design documentation for details.
- *
- * Thus, we should never come here, run-time, for strict code,
- * and name 'eval' or 'arguments'.
- */
-
- DUK_ASSERT(!strict ||
- (name != DUK_HTHREAD_STRING_EVAL(thr) &&
- name != DUK_HTHREAD_STRING_LC_ARGUMENTS(thr)));
-
- /*
- * Lookup variable and update in-place if found.
- */
-
- parents = 1; /* follow parent chain */
-
- if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) {
- if (ref.value && (ref.attrs & DUK_PROPDESC_FLAG_WRITABLE)) {
- /* Update duk_tval in-place if pointer provided and the
- * property is writable. If the property is not writable
- * (immutable binding), use duk_hobject_putprop() which
- * will respect mutability.
- */
- duk_tval *tv_val;
-
- DUK_ASSERT(ref.this_binding == NULL); /* always for register bindings */
-
- tv_val = ref.value;
- DUK_ASSERT(tv_val != NULL);
- DUK_TVAL_SET_TVAL_UPDREF(thr, tv_val, val); /* side effects */
-
- /* ref.value and ref.this_binding invalidated here */
- } else {
- DUK_ASSERT(ref.holder != NULL);
-
- DUK_TVAL_SET_OBJECT(&tv_tmp_obj, ref.holder);
- DUK_TVAL_SET_STRING(&tv_tmp_key, name);
- (void) duk_hobject_putprop(thr, &tv_tmp_obj, &tv_tmp_key, val, strict);
-
- /* ref.value and ref.this_binding invalidated here */
- }
-
- return;
- }
-
- /*
- * Not found: write to global object (non-strict) or ReferenceError
- * (strict); see E5 Section 8.7.2, step 3.
- */
-
- if (strict) {
- DUK_DDD(DUK_DDDPRINT("identifier binding not found, strict => reference error"));
- DUK_ERROR(thr, DUK_ERR_REFERENCE_ERROR, "identifier not defined");
- }
-
- DUK_DDD(DUK_DDDPRINT("identifier binding not found, not strict => set to global"));
-
- DUK_TVAL_SET_OBJECT(&tv_tmp_obj, thr->builtins[DUK_BIDX_GLOBAL]);
- DUK_TVAL_SET_STRING(&tv_tmp_key, name);
- (void) duk_hobject_putprop(thr, &tv_tmp_obj, &tv_tmp_key, val, 0); /* 0 = no throw */
-
- /* NB: 'val' may be invalidated here because put_value may realloc valstack,
- * caller beware.
- */
-}
-
-DUK_INTERNAL
-void duk_js_putvar_envrec(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name,
- duk_tval *val,
- duk_bool_t strict) {
- duk__putvar_helper(thr, env, NULL, name, val, strict);
-}
-
-DUK_INTERNAL
-void duk_js_putvar_activation(duk_hthread *thr,
- duk_activation *act,
- duk_hstring *name,
- duk_tval *val,
- duk_bool_t strict) {
- DUK_ASSERT(act != NULL);
- duk__putvar_helper(thr, act->lex_env, act, name, val, strict);
-}
-
-/*
- * DELVAR
- *
- * See E5 Sections:
- * 11.4.1 The delete operator
- * 10.2.1.1.5 DeleteBinding (N) [declarative environment record]
- * 10.2.1.2.5 DeleteBinding (N) [object environment record]
- *
- * Variable bindings established inside eval() are deletable (configurable),
- * other bindings are not, including variables declared in global level.
- * Registers are always non-deletable, and the deletion of other bindings
- * is controlled by the configurable flag.
- *
- * For strict mode code, the 'delete' operator should fail with a compile
- * time SyntaxError if applied to identifiers. Hence, no strict mode
- * run-time deletion of identifiers should ever happen. This function
- * should never be called from strict mode code!
- */
-
-DUK_LOCAL
-duk_bool_t duk__delvar_helper(duk_hthread *thr,
- duk_hobject *env,
- duk_activation *act,
- duk_hstring *name) {
- duk__id_lookup_result ref;
- duk_bool_t parents;
-
- DUK_DDD(DUK_DDDPRINT("delvar: thr=%p, env=%p, act=%p, name=%!O "
- "(env -> %!dO)",
- (void *) thr, (void *) env, (void *) act,
- (duk_heaphdr *) name, (duk_heaphdr *) env));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(name != NULL);
- /* env and act may be NULL */
-
- DUK_ASSERT_REFCOUNT_NONZERO_HEAPHDR(name);
-
- parents = 1; /* follow parent chain */
-
- if (duk__get_identifier_reference(thr, env, name, act, parents, &ref)) {
- if (ref.value && !(ref.attrs & DUK_PROPDESC_FLAG_CONFIGURABLE)) {
- /* Identifier found in registers (always non-deletable)
- * or declarative environment record and non-configurable.
- */
- return 0;
- }
- DUK_ASSERT(ref.holder != NULL);
-
- return duk_hobject_delprop_raw(thr, ref.holder, name, 0);
- }
-
- /*
- * Not found (even in global object).
- *
- * In non-strict mode this is a silent SUCCESS (!), see E5 Section 11.4.1,
- * step 3.b. In strict mode this case is a compile time SyntaxError so
- * we should not come here.
- */
-
- DUK_DDD(DUK_DDDPRINT("identifier to be deleted not found: name=%!O "
- "(treated as silent success)",
- (duk_heaphdr *) name));
- return 1;
-}
-
-#if 0 /*unused*/
-DUK_INTERNAL
-duk_bool_t duk_js_delvar_envrec(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name) {
- return duk__delvar_helper(thr, env, NULL, name);
-}
-#endif
-
-DUK_INTERNAL
-duk_bool_t duk_js_delvar_activation(duk_hthread *thr,
- duk_activation *act,
- duk_hstring *name) {
- DUK_ASSERT(act != NULL);
- return duk__delvar_helper(thr, act->lex_env, act, name);
-}
-
-/*
- * DECLVAR
- *
- * See E5 Sections:
- * 10.4.3 Entering Function Code
- * 10.5 Declaration Binding Instantion
- * 12.2 Variable Statement
- * 11.1.2 Identifier Reference
- * 10.3.1 Identifier Resolution
- *
- * Variable declaration behavior is mainly discussed in Section 10.5,
- * and is not discussed in the execution semantics (Sections 11-13).
- *
- * Conceptually declarations happen when code (global, eval, function)
- * is entered, before any user code is executed. In practice, register-
- * bound identifiers are 'declared' automatically (by virtue of being
- * allocated to registers with the initial value 'undefined'). Other
- * identifiers are declared in the function prologue with this primitive.
- *
- * Since non-register bindings eventually back to an internal object's
- * properties, the 'prop_flags' argument is used to specify binding
- * type:
- *
- * - Immutable binding: set DUK_PROPDESC_FLAG_WRITABLE to false
- * - Non-deletable binding: set DUK_PROPDESC_FLAG_CONFIGURABLE to false
- * - The flag DUK_PROPDESC_FLAG_ENUMERABLE should be set, although it
- * doesn't really matter for internal objects
- *
- * All bindings are non-deletable mutable bindings except:
- *
- * - Declarations in eval code (mutable, deletable)
- * - 'arguments' binding in strict function code (immutable)
- * - Function name binding of a function expression (immutable)
- *
- * Declarations may go to declarative environment records (always
- * so for functions), but may also go to object environment records
- * (e.g. global code). The global object environment has special
- * behavior when re-declaring a function (but not a variable); see
- * E5.1 specification, Section 10.5, step 5.e.
- *
- * Declarations always go to the 'top-most' environment record, i.e.
- * we never check the record chain. It's not an error even if a
- * property (even an immutable or non-deletable one) of the same name
- * already exists.
- *
- * If a declared variable already exists, its value needs to be updated
- * (if possible). Returns 1 if a PUTVAR needs to be done by the caller;
- * otherwise returns 0.
- */
-
-DUK_LOCAL
-duk_bool_t duk__declvar_helper(duk_hthread *thr,
- duk_hobject *env,
- duk_hstring *name,
- duk_tval *val,
- duk_small_int_t prop_flags,
- duk_bool_t is_func_decl) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *holder;
- duk_bool_t parents;
- duk__id_lookup_result ref;
- duk_tval *tv;
-
- DUK_DDD(DUK_DDDPRINT("declvar: thr=%p, env=%p, name=%!O, val=%!T, prop_flags=0x%08lx, is_func_decl=%ld "
- "(env -> %!iO)",
- (void *) thr, (void *) env, (duk_heaphdr *) name,
- (duk_tval *) val, (unsigned long) prop_flags,
- (unsigned int) is_func_decl, (duk_heaphdr *) env));
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(name != NULL);
- DUK_ASSERT(val != NULL);
-
- /* Note: in strict mode the compiler should reject explicit
- * declaration of 'eval' or 'arguments'. However, internal
- * bytecode may declare 'arguments' in the function prologue.
- * We don't bother checking (or asserting) for these now.
- */
-
- /* Note: val is a stable duk_tval pointer. The caller makes
- * a value copy into its stack frame, so 'tv_val' is not subject
- * to side effects here.
- */
-
- /*
- * Check whether already declared.
- *
- * We need to check whether the binding exists in the environment
- * without walking its parents. However, we still need to check
- * register-bound identifiers and the prototype chain of an object
- * environment target object.
- */
-
- parents = 0; /* just check 'env' */
- if (duk__get_identifier_reference(thr, env, name, NULL, parents, &ref)) {
- duk_int_t e_idx;
- duk_int_t h_idx;
- duk_small_int_t flags;
-
- /*
- * Variable already declared, ignore re-declaration.
- * The only exception is the updated behavior of E5.1 for
- * global function declarations, E5.1 Section 10.5, step 5.e.
- * This behavior does not apply to global variable declarations.
- */
-
- if (!(is_func_decl && env == thr->builtins[DUK_BIDX_GLOBAL_ENV])) {
- DUK_DDD(DUK_DDDPRINT("re-declare a binding, ignoring"));
- return 1; /* 1 -> needs a PUTVAR */
- }
-
- /*
- * Special behavior in E5.1.
- *
- * Note that even though parents == 0, the conflicting property
- * may be an inherited property (currently our global object's
- * prototype is Object.prototype). Step 5.e first operates on
- * the existing property (which is potentially in an ancestor)
- * and then defines a new property in the global object (and
- * never modifies the ancestor).
- *
- * Also note that this logic would become even more complicated
- * if the conflicting property might be a virtual one. Object
- * prototype has no virtual properties, though.
- *
- * XXX: this is now very awkward, rework.
- */
-
- DUK_DDD(DUK_DDDPRINT("re-declare a function binding in global object, "
- "updated E5.1 processing"));
-
- DUK_ASSERT(ref.holder != NULL);
- holder = ref.holder;
-
- /* holder will be set to the target object, not the actual object
- * where the property was found (see duk__get_identifier_reference()).
- */
- DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(holder) == DUK_HOBJECT_CLASS_GLOBAL);
- DUK_ASSERT(!DUK_HOBJECT_HAS_EXOTIC_ARRAY(holder)); /* global object doesn't have array part */
-
- /* XXX: use a helper for prototype traversal; no loop check here */
- /* must be found: was found earlier, and cannot be inherited */
- for (;;) {
- DUK_ASSERT(holder != NULL);
- duk_hobject_find_existing_entry(thr->heap, holder, name, &e_idx, &h_idx);
- if (e_idx >= 0) {
- break;
- }
- /* SCANBUILD: NULL pointer dereference, doesn't actually trigger,
- * asserted above.
- */
- holder = DUK_HOBJECT_GET_PROTOTYPE(thr->heap, holder);
- }
- DUK_ASSERT(holder != NULL);
- DUK_ASSERT(e_idx >= 0);
- /* SCANBUILD: scan-build produces a NULL pointer dereference warning
- * below; it never actually triggers because holder is actually never
- * NULL.
- */
-
- /* ref.holder is global object, holder is the object with the
- * conflicting property.
- */
-
- flags = DUK_HOBJECT_E_GET_FLAGS(thr->heap, holder, e_idx);
- if (!(flags & DUK_PROPDESC_FLAG_CONFIGURABLE)) {
- if (flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- DUK_DDD(DUK_DDDPRINT("existing property is a non-configurable "
- "accessor -> reject"));
- goto fail_existing_attributes;
- }
- if (!((flags & DUK_PROPDESC_FLAG_WRITABLE) &&
- (flags & DUK_PROPDESC_FLAG_ENUMERABLE))) {
- DUK_DDD(DUK_DDDPRINT("existing property is a non-configurable "
- "plain property which is not writable and "
- "enumerable -> reject"));
- goto fail_existing_attributes;
- }
-
- DUK_DDD(DUK_DDDPRINT("existing property is not configurable but "
- "is plain, enumerable, and writable -> "
- "allow redeclaration"));
- }
-
- if (holder == ref.holder) {
- /* XXX: if duk_hobject_define_property_internal() was updated
- * to handle a pre-existing accessor property, this would be
- * a simple call (like for the ancestor case).
- */
- DUK_DDD(DUK_DDDPRINT("redefine, offending property in global object itself"));
-
- if (flags & DUK_PROPDESC_FLAG_ACCESSOR) {
- duk_hobject *tmp;
-
- tmp = DUK_HOBJECT_E_GET_VALUE_GETTER(thr->heap, holder, e_idx);
- DUK_HOBJECT_E_SET_VALUE_GETTER(thr->heap, holder, e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
- DUK_UNREF(tmp);
- tmp = DUK_HOBJECT_E_GET_VALUE_SETTER(thr->heap, holder, e_idx);
- DUK_HOBJECT_E_SET_VALUE_SETTER(thr->heap, holder, e_idx, NULL);
- DUK_HOBJECT_DECREF_ALLOWNULL(thr, tmp);
- DUK_UNREF(tmp);
- } else {
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx);
- DUK_TVAL_SET_UNDEFINED_UPDREF(thr, tv);
- }
-
- /* Here val would be potentially invalid if we didn't make
- * a value copy at the caller.
- */
-
- tv = DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx);
- DUK_TVAL_SET_TVAL(tv, val);
- DUK_TVAL_INCREF(thr, tv);
- DUK_HOBJECT_E_SET_FLAGS(thr->heap, holder, e_idx, prop_flags);
-
- DUK_DDD(DUK_DDDPRINT("updated global binding, final result: "
- "value -> %!T, prop_flags=0x%08lx",
- (duk_tval *) DUK_HOBJECT_E_GET_VALUE_TVAL_PTR(thr->heap, holder, e_idx),
- (unsigned long) prop_flags));
- } else {
- DUK_DDD(DUK_DDDPRINT("redefine, offending property in ancestor"));
-
- DUK_ASSERT(ref.holder == thr->builtins[DUK_BIDX_GLOBAL]);
- duk_push_tval(ctx, val);
- duk_hobject_define_property_internal(thr, ref.holder, name, prop_flags);
- }
-
- return 0;
- }
-
- /*
- * Not found (in registers or record objects). Declare
- * to current variable environment.
- */
-
- /*
- * Get holder object
- */
-
- if (DUK_HOBJECT_IS_DECENV(env)) {
- holder = env;
- } else {
- DUK_ASSERT(DUK_HOBJECT_IS_OBJENV(env));
-
- tv = duk_hobject_find_existing_entry_tval_ptr(thr->heap, env, DUK_HTHREAD_STRING_INT_TARGET(thr));
- DUK_ASSERT(tv != NULL);
- DUK_ASSERT(DUK_TVAL_IS_OBJECT(tv));
- holder = DUK_TVAL_GET_OBJECT(tv);
- DUK_ASSERT(holder != NULL);
- }
-
- /*
- * Define new property
- *
- * Note: this may fail if the holder is not extensible.
- */
-
- /* XXX: this is awkward as we use an internal method which doesn't handle
- * extensibility etc correctly. Basically we'd want to do a [[DefineOwnProperty]]
- * or Object.defineProperty() here.
- */
-
- if (!DUK_HOBJECT_HAS_EXTENSIBLE(holder)) {
- goto fail_not_extensible;
- }
-
- duk_push_hobject(ctx, holder);
- duk_push_hstring(ctx, name);
- duk_push_tval(ctx, val);
- duk_xdef_prop(ctx, -3, prop_flags); /* [holder name val] -> [holder] */
- duk_pop(ctx);
-
- return 0;
-
- fail_existing_attributes:
- fail_not_extensible:
- DUK_ERROR_TYPE(thr, "declaration failed");
- return 0;
-}
-
-DUK_INTERNAL
-duk_bool_t duk_js_declvar_activation(duk_hthread *thr,
- duk_activation *act,
- duk_hstring *name,
- duk_tval *val,
- duk_small_int_t prop_flags,
- duk_bool_t is_func_decl) {
- duk_hobject *env;
- duk_tval tv_val_copy;
-
- /*
- * Make a value copy of the input val. This ensures that
- * side effects cannot invalidate the pointer.
- */
-
- DUK_TVAL_SET_TVAL(&tv_val_copy, val);
- val = &tv_val_copy;
-
- /*
- * Delayed env creation check
- */
-
- if (!act->var_env) {
- DUK_ASSERT(act->lex_env == NULL);
- duk_js_init_activation_environment_records_delayed(thr, act);
- }
- DUK_ASSERT(act->lex_env != NULL);
- DUK_ASSERT(act->var_env != NULL);
-
- env = act->var_env;
- DUK_ASSERT(env != NULL);
- DUK_ASSERT(DUK_HOBJECT_IS_ENV(env));
-
- return duk__declvar_helper(thr, env, name, val, prop_flags, is_func_decl);
-}
-#line 1 "duk_lexer.c"
-/*
- * Lexer for source files, ToNumber() string conversions, RegExp expressions,
- * and JSON.
- *
- * Provides a stream of Ecmascript tokens from an UTF-8/CESU-8 buffer. The
- * caller can also rewind the token stream into a certain position which is
- * needed by the compiler part for multi-pass scanning. Tokens are
- * represented as duk_token structures, and contain line number information.
- * Token types are identified with DUK_TOK_* defines.
- *
- * Characters are decoded into a fixed size lookup window consisting of
- * decoded Unicode code points, with window positions past the end of the
- * input filled with an invalid codepoint (-1). The tokenizer can thus
- * perform multiple character lookups efficiently and with few sanity
- * checks (such as access outside the end of the input), which keeps the
- * tokenization code small at the cost of performance.
- *
- * Character data in tokens, such as identifier names and string literals,
- * is encoded into CESU-8 format on-the-fly while parsing the token in
- * question. The string data is made reachable to garbage collection by
- * placing the token-related values in value stack entries allocated for
- * this purpose by the caller. The characters exist in Unicode code point
- * form only in the fixed size lookup window, which keeps character data
- * expansion (of especially ASCII data) low.
- *
- * Token parsing supports the full range of Unicode characters as described
- * in the E5 specification. Parsing has been optimized for ASCII characters
- * because ordinary Ecmascript code consists almost entirely of ASCII
- * characters. Matching of complex Unicode codepoint sets (such as in the
- * IdentifierStart and IdentifierPart productions) is optimized for size,
- * and is done using a linear scan of a bit-packed list of ranges. This is
- * very slow, but should never be entered unless the source code actually
- * contains Unicode characters.
- *
- * Ecmascript tokenization is partially context sensitive. First,
- * additional future reserved words are recognized in strict mode (see E5
- * Section 7.6.1.2). Second, a forward slash character ('/') can be
- * recognized either as starting a RegExp literal or as a division operator,
- * depending on context. The caller must provide necessary context flags
- * when requesting a new token.
- *
- * Future work:
- *
- * * Make line number tracking optional, as it consumes space.
- *
- * * Add a feature flag for disabling UTF-8 decoding of input, as most
- * source code is ASCII. Because of Unicode escapes written in ASCII,
- * this does not allow Unicode support to be removed from e.g.
- * duk_unicode_is_identifier_start() nor does it allow removal of CESU-8
- * encoding of e.g. string literals.
- *
- * * Add a feature flag for disabling Unicode compliance of e.g. identifier
- * names. This allows for a build more than a kilobyte smaller, because
- * Unicode ranges needed by duk_unicode_is_identifier_start() and
- * duk_unicode_is_identifier_part() can be dropped. String literals
- * should still be allowed to contain escaped Unicode, so this still does
- * not allow removal of CESU-8 encoding of e.g. string literals.
- *
- * * Character lookup tables for codepoints above BMP could be stripped.
- *
- * * Strictly speaking, E5 specification requires that source code consists
- * of 16-bit code units, and if not, must be conceptually converted to
- * that format first. The current lexer processes Unicode code points
- * and allows characters outside the BMP. These should be converted to
- * surrogate pairs while reading the source characters into the window,
- * not after tokens have been formed (as is done now). However, the fix
- * is not trivial because two characters are decoded from one codepoint.
- *
- * * Optimize for speed as well as size. Large if-else ladders are (at
- * least potentially) slow.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Various defines and file specific helper macros
- */
-
-#define DUK__MAX_RE_DECESC_DIGITS 9
-#define DUK__MAX_RE_QUANT_DIGITS 9 /* Does not allow e.g. 2**31-1, but one more would allow overflows of u32. */
-
-/* whether to use macros or helper function depends on call count */
-#define DUK__ISDIGIT(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_9)
-#define DUK__ISHEXDIGIT(x) duk__is_hex_digit((x))
-#define DUK__ISOCTDIGIT(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_7)
-#define DUK__ISDIGIT03(x) ((x) >= DUK_ASC_0 && (x) <= DUK_ASC_3)
-#define DUK__ISDIGIT47(x) ((x) >= DUK_ASC_4 && (x) <= DUK_ASC_7)
-
-/* lexer character window helpers */
-#define DUK__LOOKUP(lex_ctx,index) ((lex_ctx)->window[(index)].codepoint)
-#define DUK__ADVANCECHARS(lex_ctx,count) duk__advance_bytes((lex_ctx), (count) * sizeof(duk_lexer_codepoint))
-#define DUK__ADVANCEBYTES(lex_ctx,count) duk__advance_bytes((lex_ctx), (count))
-#define DUK__INITBUFFER(lex_ctx) duk__initbuffer((lex_ctx))
-#define DUK__APPENDBUFFER(lex_ctx,x) duk__appendbuffer((lex_ctx), (duk_codepoint_t) (x))
-
-/* lookup shorthands (note: assume context variable is named 'lex_ctx') */
-#define DUK__L0() DUK__LOOKUP(lex_ctx, 0)
-#define DUK__L1() DUK__LOOKUP(lex_ctx, 1)
-#define DUK__L2() DUK__LOOKUP(lex_ctx, 2)
-#define DUK__L3() DUK__LOOKUP(lex_ctx, 3)
-#define DUK__L4() DUK__LOOKUP(lex_ctx, 4)
-#define DUK__L5() DUK__LOOKUP(lex_ctx, 5)
-
-/* packed advance/token number macro used by multiple functions */
-#define DUK__ADVTOK(advbytes,tok) ((((advbytes) * sizeof(duk_lexer_codepoint)) << 8) + (tok))
-
-/*
- * Advance lookup window by N characters, filling in new characters as
- * necessary. After returning caller is guaranteed a character window of
- * at least DUK_LEXER_WINDOW_SIZE characters.
- *
- * The main function duk__advance_bytes() is called at least once per every
- * token so it has a major lexer/compiler performance impact. There are two
- * variants for the main duk__advance_bytes() algorithm: a sliding window
- * approach which is slightly faster at the cost of larger code footprint,
- * and a simple copying one.
- *
- * Decoding directly from the source string would be another lexing option.
- * But the lookup window based approach has the advantage of hiding the
- * source string and its encoding effectively which gives more flexibility
- * going forward to e.g. support chunked streaming of source from flash.
- *
- * Decodes UTF-8/CESU-8 leniently with support for code points from U+0000 to
- * U+10FFFF, causing an error if the input is unparseable. Leniency means:
- *
- * * Unicode code point validation is intentionally not performed,
- * except to check that the codepoint does not exceed 0x10ffff.
- *
- * * In particular, surrogate pairs are allowed and not combined, which
- * allows source files to represent all SourceCharacters with CESU-8.
- * Broken surrogate pairs are allowed, as Ecmascript does not mandate
- * their validation.
- *
- * * Allow non-shortest UTF-8 encodings.
- *
- * Leniency here causes few security concerns because all character data is
- * decoded into Unicode codepoints before lexer processing, and is then
- * re-encoded into CESU-8. The source can be parsed as strict UTF-8 with
- * a compiler option. However, Ecmascript source characters include -all-
- * 16-bit unsigned integer codepoints, so leniency seems to be appropriate.
- *
- * Note that codepoints above the BMP are not strictly SourceCharacters,
- * but the lexer still accepts them as such. Before ending up in a string
- * or an identifier name, codepoints above BMP are converted into surrogate
- * pairs and then CESU-8 encoded, resulting in 16-bit Unicode data as
- * expected by Ecmascript.
- *
- * An alternative approach to dealing with invalid or partial sequences
- * would be to skip them and replace them with e.g. the Unicode replacement
- * character U+FFFD. This has limited utility because a replacement character
- * will most likely cause a parse error, unless it occurs inside a string.
- * Further, Ecmascript source is typically pure ASCII.
- *
- * See:
- *
- * http://en.wikipedia.org/wiki/UTF-8
- * http://en.wikipedia.org/wiki/CESU-8
- * http://tools.ietf.org/html/rfc3629
- * http://en.wikipedia.org/wiki/UTF-8#Invalid_byte_sequences
- *
- * Future work:
- *
- * * Reject other invalid Unicode sequences (see Wikipedia entry for examples)
- * in strict UTF-8 mode.
- *
- * * Size optimize. An attempt to use a 16-byte lookup table for the first
- * byte resulted in a code increase though.
- *
- * * Is checking against maximum 0x10ffff really useful? 4-byte encoding
- * imposes a certain limit anyway.
- *
- * * Support chunked streaming of source code. Can be implemented either
- * by streaming chunks of bytes or chunks of codepoints.
- */
-
-#if defined(DUK_USE_LEXER_SLIDING_WINDOW)
-DUK_LOCAL void duk__fill_lexer_buffer(duk_lexer_ctx *lex_ctx, duk_small_uint_t start_offset_bytes) {
- duk_lexer_codepoint *cp, *cp_end;
- duk_ucodepoint_t x;
- duk_small_uint_t contlen;
- const duk_uint8_t *p, *p_end;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- duk_ucodepoint_t mincp;
-#endif
- duk_int_t input_line;
-
- /* Use temporaries and update lex_ctx only when finished. */
- input_line = lex_ctx->input_line;
- p = lex_ctx->input + lex_ctx->input_offset;
- p_end = lex_ctx->input + lex_ctx->input_length;
-
- cp = (duk_lexer_codepoint *) (void *) ((duk_uint8_t *) lex_ctx->buffer + start_offset_bytes);
- cp_end = lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE;
-
- for (; cp != cp_end; cp++) {
- cp->offset = (duk_size_t) (p - lex_ctx->input);
- cp->line = input_line;
-
- /* XXX: potential issue with signed pointers, p_end < p. */
- if (DUK_UNLIKELY(p >= p_end)) {
- /* If input_offset were assigned a negative value, it would
- * result in a large positive value. Most likely it would be
- * larger than input_length and be caught here. In any case
- * no memory unsafe behavior would happen.
- */
- cp->codepoint = -1;
- continue;
- }
-
- x = (duk_ucodepoint_t) (*p++);
-
- /* Fast path. */
-
- if (DUK_LIKELY(x < 0x80UL)) {
- DUK_ASSERT(x != 0x2028UL && x != 0x2029UL); /* not LS/PS */
- if (DUK_UNLIKELY(x <= 0x000dUL)) {
- if ((x == 0x000aUL) ||
- ((x == 0x000dUL) && (p >= p_end || *p != 0x000aUL))) {
- /* lookup for 0x000a above assumes shortest encoding now */
-
- /* E5 Section 7.3, treat the following as newlines:
- * LF
- * CR [not followed by LF]
- * LS
- * PS
- *
- * For CR LF, CR is ignored if it is followed by LF, and the LF will bump
- * the line number.
- */
- input_line++;
- }
- }
-
- cp->codepoint = (duk_codepoint_t) x;
- continue;
- }
-
- /* Slow path. */
-
- if (x < 0xc0UL) {
- /* 10xx xxxx -> invalid */
- goto error_encoding;
- } else if (x < 0xe0UL) {
- /* 110x xxxx 10xx xxxx */
- contlen = 1;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x80UL;
-#endif
- x = x & 0x1fUL;
- } else if (x < 0xf0UL) {
- /* 1110 xxxx 10xx xxxx 10xx xxxx */
- contlen = 2;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x800UL;
-#endif
- x = x & 0x0fUL;
- } else if (x < 0xf8UL) {
- /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx */
- contlen = 3;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x10000UL;
-#endif
- x = x & 0x07UL;
- } else {
- /* no point in supporting encodings of 5 or more bytes */
- goto error_encoding;
- }
-
- DUK_ASSERT(p_end >= p);
- if ((duk_size_t) contlen > (duk_size_t) (p_end - p)) {
- goto error_clipped;
- }
-
- while (contlen > 0) {
- duk_small_uint_t y;
- y = *p++;
- if ((y & 0xc0U) != 0x80U) {
- /* check that byte has the form 10xx xxxx */
- goto error_encoding;
- }
- x = x << 6;
- x += y & 0x3fUL;
- contlen--;
- }
-
- /* check final character validity */
-
- if (x > 0x10ffffUL) {
- goto error_encoding;
- }
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- if (x < mincp || (x >= 0xd800UL && x <= 0xdfffUL) || x == 0xfffeUL) {
- goto error_encoding;
- }
-#endif
-
- DUK_ASSERT(x != 0x000aUL && x != 0x000dUL);
- if ((x == 0x2028UL) || (x == 0x2029UL)) {
- input_line++;
- }
-
- cp->codepoint = (duk_codepoint_t) x;
- }
-
- lex_ctx->input_offset = (duk_size_t) (p - lex_ctx->input);
- lex_ctx->input_line = input_line;
- return;
-
- error_clipped: /* clipped codepoint */
- error_encoding: /* invalid codepoint encoding or codepoint */
- lex_ctx->input_offset = (duk_size_t) (p - lex_ctx->input);
- lex_ctx->input_line = input_line;
-
- DUK_ERROR_SYNTAX(lex_ctx->thr, "utf-8 decode failed");
-}
-
-DUK_LOCAL void duk__advance_bytes(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_bytes) {
- duk_small_uint_t used_bytes, avail_bytes;
-
- DUK_ASSERT_DISABLE(count_bytes >= 0); /* unsigned */
- DUK_ASSERT(count_bytes <= (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint)));
- DUK_ASSERT(lex_ctx->window >= lex_ctx->buffer);
- DUK_ASSERT(lex_ctx->window < lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE);
- DUK_ASSERT((duk_uint8_t *) lex_ctx->window + count_bytes <= (duk_uint8_t *) lex_ctx->buffer + DUK_LEXER_BUFFER_SIZE * sizeof(duk_lexer_codepoint));
-
- /* Zero 'count' is also allowed to make call sites easier.
- * Arithmetic in bytes generates better code in GCC.
- */
-
- lex_ctx->window = (duk_lexer_codepoint *) (void *) ((duk_uint8_t *) lex_ctx->window + count_bytes); /* avoid multiply */
- used_bytes = (duk_small_uint_t) ((duk_uint8_t *) lex_ctx->window - (duk_uint8_t *) lex_ctx->buffer);
- avail_bytes = DUK_LEXER_BUFFER_SIZE * sizeof(duk_lexer_codepoint) - used_bytes;
- if (avail_bytes < (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint))) {
- /* Not enough data to provide a full window, so "scroll" window to
- * start of buffer and fill up the rest.
- */
- DUK_MEMMOVE((void *) lex_ctx->buffer,
- (const void *) lex_ctx->window,
- (size_t) avail_bytes);
- lex_ctx->window = lex_ctx->buffer;
- duk__fill_lexer_buffer(lex_ctx, avail_bytes);
- }
-}
-
-DUK_LOCAL void duk__init_lexer_window(duk_lexer_ctx *lex_ctx) {
- lex_ctx->window = lex_ctx->buffer;
- duk__fill_lexer_buffer(lex_ctx, 0);
-}
-#else /* DUK_USE_LEXER_SLIDING_WINDOW */
-DUK_LOCAL duk_codepoint_t duk__read_char(duk_lexer_ctx *lex_ctx) {
- duk_ucodepoint_t x;
- duk_small_uint_t len;
- duk_small_uint_t i;
- const duk_uint8_t *p;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- duk_ucodepoint_t mincp;
-#endif
- duk_size_t input_offset;
-
- input_offset = lex_ctx->input_offset;
- if (DUK_UNLIKELY(input_offset >= lex_ctx->input_length)) {
- /* If input_offset were assigned a negative value, it would
- * result in a large positive value. Most likely it would be
- * larger than input_length and be caught here. In any case
- * no memory unsafe behavior would happen.
- */
- return -1;
- }
-
- p = lex_ctx->input + input_offset;
- x = (duk_ucodepoint_t) (*p);
-
- if (DUK_LIKELY(x < 0x80UL)) {
- /* 0xxx xxxx -> fast path */
-
- /* input offset tracking */
- lex_ctx->input_offset++;
-
- DUK_ASSERT(x != 0x2028UL && x != 0x2029UL); /* not LS/PS */
- if (DUK_UNLIKELY(x <= 0x000dUL)) {
- if ((x == 0x000aUL) ||
- ((x == 0x000dUL) && (lex_ctx->input_offset >= lex_ctx->input_length ||
- lex_ctx->input[lex_ctx->input_offset] != 0x000aUL))) {
- /* lookup for 0x000a above assumes shortest encoding now */
-
- /* E5 Section 7.3, treat the following as newlines:
- * LF
- * CR [not followed by LF]
- * LS
- * PS
- *
- * For CR LF, CR is ignored if it is followed by LF, and the LF will bump
- * the line number.
- */
- lex_ctx->input_line++;
- }
- }
-
- return (duk_codepoint_t) x;
- }
-
- /* Slow path. */
-
- if (x < 0xc0UL) {
- /* 10xx xxxx -> invalid */
- goto error_encoding;
- } else if (x < 0xe0UL) {
- /* 110x xxxx 10xx xxxx */
- len = 2;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x80UL;
-#endif
- x = x & 0x1fUL;
- } else if (x < 0xf0UL) {
- /* 1110 xxxx 10xx xxxx 10xx xxxx */
- len = 3;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x800UL;
-#endif
- x = x & 0x0fUL;
- } else if (x < 0xf8UL) {
- /* 1111 0xxx 10xx xxxx 10xx xxxx 10xx xxxx */
- len = 4;
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- mincp = 0x10000UL;
-#endif
- x = x & 0x07UL;
- } else {
- /* no point in supporting encodings of 5 or more bytes */
- goto error_encoding;
- }
-
- DUK_ASSERT(lex_ctx->input_length >= lex_ctx->input_offset);
- if ((duk_size_t) len > (duk_size_t) (lex_ctx->input_length - lex_ctx->input_offset)) {
- goto error_clipped;
- }
-
- p++;
- for (i = 1; i < len; i++) {
- duk_small_uint_t y;
- y = *p++;
- if ((y & 0xc0U) != 0x80U) {
- /* check that byte has the form 10xx xxxx */
- goto error_encoding;
- }
- x = x << 6;
- x += y & 0x3fUL;
- }
-
- /* check final character validity */
-
- if (x > 0x10ffffUL) {
- goto error_encoding;
- }
-#if defined(DUK_USE_STRICT_UTF8_SOURCE)
- if (x < mincp || (x >= 0xd800UL && x <= 0xdfffUL) || x == 0xfffeUL) {
- goto error_encoding;
- }
-#endif
-
- /* input offset tracking */
- lex_ctx->input_offset += len;
-
- /* line tracking */
- DUK_ASSERT(x != 0x000aUL && x != 0x000dUL);
- if ((x == 0x2028UL) || (x == 0x2029UL)) {
- lex_ctx->input_line++;
- }
-
- return (duk_codepoint_t) x;
-
- error_clipped: /* clipped codepoint */
- error_encoding: /* invalid codepoint encoding or codepoint */
- DUK_ERROR_SYNTAX(lex_ctx->thr, "utf-8 decode failed");
- return 0;
-}
-
-DUK_LOCAL void duk__advance_bytes(duk_lexer_ctx *lex_ctx, duk_small_uint_t count_bytes) {
- duk_small_uint_t keep_bytes;
- duk_lexer_codepoint *cp, *cp_end;
-
- DUK_ASSERT_DISABLE(count_bytes >= 0); /* unsigned */
- DUK_ASSERT(count_bytes <= (duk_small_uint_t) (DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint)));
-
- /* Zero 'count' is also allowed to make call sites easier. */
-
- keep_bytes = DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint) - count_bytes;
- DUK_MEMMOVE((void *) lex_ctx->window,
- (const void *) ((duk_uint8_t *) lex_ctx->window + count_bytes),
- (size_t) keep_bytes);
-
- cp = (duk_lexer_codepoint *) ((duk_uint8_t *) lex_ctx->window + keep_bytes);
- cp_end = lex_ctx->window + DUK_LEXER_WINDOW_SIZE;
- for (; cp != cp_end; cp++) {
- cp->offset = lex_ctx->input_offset;
- cp->line = lex_ctx->input_line;
- cp->codepoint = duk__read_char(lex_ctx);
- }
-}
-
-DUK_LOCAL void duk__init_lexer_window(duk_lexer_ctx *lex_ctx) {
- /* Call with count == DUK_LEXER_WINDOW_SIZE to fill buffer initially. */
- duk__advance_bytes(lex_ctx, DUK_LEXER_WINDOW_SIZE * sizeof(duk_lexer_codepoint)); /* fill window */
-}
-#endif /* DUK_USE_LEXER_SLIDING_WINDOW */
-
-/*
- * (Re)initialize the temporary byte buffer. May be called extra times
- * with little impact.
- */
-
-DUK_LOCAL void duk__initbuffer(duk_lexer_ctx *lex_ctx) {
- /* Reuse buffer as is unless buffer has grown large. */
- if (DUK_HBUFFER_DYNAMIC_GET_SIZE(lex_ctx->buf) < DUK_LEXER_TEMP_BUF_LIMIT) {
- /* Keep current size */
- } else {
- duk_hbuffer_resize(lex_ctx->thr, lex_ctx->buf, DUK_LEXER_TEMP_BUF_LIMIT);
- }
-
- DUK_BW_INIT_WITHBUF(lex_ctx->thr, &lex_ctx->bw, lex_ctx->buf);
-}
-
-/*
- * Append a Unicode codepoint to the temporary byte buffer. Performs
- * CESU-8 surrogate pair encoding for codepoints above the BMP.
- * Existing surrogate pairs are allowed and also encoded into CESU-8.
- */
-
-DUK_LOCAL void duk__appendbuffer(duk_lexer_ctx *lex_ctx, duk_codepoint_t x) {
- /*
- * Since character data is only generated by decoding the source or by
- * the compiler itself, we rely on the input codepoints being correct
- * and avoid a check here.
- *
- * Character data can also come here through decoding of Unicode
- * escapes ("\udead\ubeef") so all 16-but unsigned values can be
- * present, even when the source file itself is strict UTF-8.
- */
-
- DUK_ASSERT(x >= 0 && x <= 0x10ffff);
-
- DUK_BW_WRITE_ENSURE_CESU8(lex_ctx->thr, &lex_ctx->bw, (duk_ucodepoint_t) x);
-}
-
-/*
- * Intern the temporary byte buffer into a valstack slot
- * (in practice, slot1 or slot2).
- */
-
-DUK_LOCAL void duk__internbuffer(duk_lexer_ctx *lex_ctx, duk_idx_t valstack_idx) {
- duk_context *ctx = (duk_context *) lex_ctx->thr;
-
- DUK_ASSERT(valstack_idx == lex_ctx->slot1_idx || valstack_idx == lex_ctx->slot2_idx);
-
- DUK_BW_PUSH_AS_STRING(lex_ctx->thr, &lex_ctx->bw);
- duk_replace(ctx, valstack_idx);
-}
-
-/*
- * Init lexer context
- */
-
-DUK_INTERNAL void duk_lexer_initctx(duk_lexer_ctx *lex_ctx) {
- DUK_ASSERT(lex_ctx != NULL);
-
- DUK_MEMZERO(lex_ctx, sizeof(*lex_ctx));
-#if defined(DUK_USE_EXPLICIT_NULL_INIT)
-#if defined(DUK_USE_LEXER_SLIDING_WINDOW)
- lex_ctx->window = NULL;
-#endif
- lex_ctx->thr = NULL;
- lex_ctx->input = NULL;
- lex_ctx->buf = NULL;
-#endif
-}
-
-/*
- * Set lexer input position and reinitialize lookup window.
- */
-
-/* NB: duk_lexer_getpoint() is a macro only */
-
-DUK_INTERNAL void duk_lexer_setpoint(duk_lexer_ctx *lex_ctx, duk_lexer_point *pt) {
- DUK_ASSERT_DISABLE(pt->offset >= 0); /* unsigned */
- DUK_ASSERT(pt->line >= 1);
- lex_ctx->input_offset = pt->offset;
- lex_ctx->input_line = pt->line;
- duk__init_lexer_window(lex_ctx);
-}
-
-/*
- * Lexing helpers
- */
-
-/* numeric value of a hex digit (also covers octal and decimal digits) */
-DUK_LOCAL duk_codepoint_t duk__hexval(duk_lexer_ctx *lex_ctx, duk_codepoint_t x) {
- duk_small_int_t t;
-
- /* Here 'x' is a Unicode codepoint */
- if (DUK_LIKELY(x >= 0 && x <= 0xff)) {
- t = duk_hex_dectab[x];
- if (DUK_LIKELY(t >= 0)) {
- return t;
- }
- }
-
- /* Throwing an error this deep makes the error rather vague, but
- * saves hundreds of bytes of code.
- */
- DUK_ERROR_SYNTAX(lex_ctx->thr, "decode error");
- return 0;
-}
-
-/* having this as a separate function provided a size benefit */
-DUK_LOCAL duk_bool_t duk__is_hex_digit(duk_codepoint_t x) {
- if (DUK_LIKELY(x >= 0 && x <= 0xff)) {
- return (duk_hex_dectab[x] >= 0);
- }
- return 0;
-}
-
-DUK_LOCAL duk_codepoint_t duk__decode_hexesc_from_window(duk_lexer_ctx *lex_ctx, duk_small_int_t lookup_offset) {
- /* validation performed by duk__hexval */
- return (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset].codepoint) << 4) |
- (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset + 1].codepoint));
-}
-
-DUK_LOCAL duk_codepoint_t duk__decode_uniesc_from_window(duk_lexer_ctx *lex_ctx, duk_small_int_t lookup_offset) {
- /* validation performed by duk__hexval */
- return (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset].codepoint) << 12) |
- (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset + 1].codepoint) << 8) |
- (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset + 2].codepoint) << 4) |
- (duk__hexval(lex_ctx, lex_ctx->window[lookup_offset + 3].codepoint));
-}
-
-/*
- * Parse Ecmascript source InputElementDiv or InputElementRegExp
- * (E5 Section 7), skipping whitespace, comments, and line terminators.
- *
- * Possible results are:
- * (1) a token
- * (2) a line terminator (skipped)
- * (3) a comment (skipped)
- * (4) EOF
- *
- * White space is automatically skipped from the current position (but
- * not after the input element). If input has already ended, returns
- * DUK_TOK_EOF indefinitely. If a parse error occurs, uses an DUK_ERROR()
- * macro call (and hence a longjmp through current heap longjmp context).
- * Comments and line terminator tokens are automatically skipped.
- *
- * The input element being matched is determined by regexp_mode; if set,
- * parses a InputElementRegExp, otherwise a InputElementDiv. The
- * difference between these are handling of productions starting with a
- * forward slash.
- *
- * If strict_mode is set, recognizes additional future reserved words
- * specific to strict mode, and refuses to parse octal literals.
- *
- * The matching strategy below is to (currently) use a six character
- * lookup window to quickly determine which production is the -longest-
- * matching one, and then parse that. The top-level if-else clauses
- * match the first character, and the code blocks for each clause
- * handle -all- alternatives for that first character. Ecmascript
- * specification uses the "longest match wins" semantics, so the order
- * of the if-clauses matters.
- *
- * Misc notes:
- *
- * * Ecmascript numeric literals do not accept a sign character.
- * Consequently e.g. "-1.0" is parsed as two tokens: a negative
- * sign and a positive numeric literal. The compiler performs
- * the negation during compilation, so this has no adverse impact.
- *
- * * There is no token for "undefined": it is just a value available
- * from the global object (or simply established by doing a reference
- * to an undefined value).
- *
- * * Some contexts want Identifier tokens, which are IdentifierNames
- * excluding reserved words, while some contexts want IdentifierNames
- * directly. In the latter case e.g. "while" is interpreted as an
- * identifier name, not a DUK_TOK_WHILE token. The solution here is
- * to provide both token types: DUK_TOK_WHILE goes to 't' while
- * DUK_TOK_IDENTIFIER goes to 't_nores', and 'slot1' always contains
- * the identifier / keyword name.
- *
- * * Directive prologue needs to identify string literals such as
- * "use strict" and 'use strict', which are sensitive to line
- * continuations and escape sequences. For instance, "use\u0020strict"
- * is a valid directive but is distinct from "use strict". The solution
- * here is to decode escapes while tokenizing, but to keep track of the
- * number of escapes. Directive detection can then check that the
- * number of escapes is zero.
- *
- * * Multi-line comments with one or more internal LineTerminator are
- * treated like a line terminator to comply with automatic semicolon
- * insertion.
- */
-
-DUK_INTERNAL
-void duk_lexer_parse_js_input_element(duk_lexer_ctx *lex_ctx,
- duk_token *out_token,
- duk_bool_t strict_mode,
- duk_bool_t regexp_mode) {
- duk_codepoint_t x; /* temporary, must be signed and 32-bit to hold Unicode code points */
- duk_small_uint_t advtok = 0; /* (advance << 8) + token_type, updated at function end,
- * init is unnecessary but suppresses "may be used uninitialized" warnings.
- */
- duk_bool_t got_lineterm = 0; /* got lineterm preceding non-whitespace, non-lineterm token */
-
- if (++lex_ctx->token_count >= lex_ctx->token_limit) {
- DUK_ERROR_RANGE(lex_ctx->thr, "token limit");
- return; /* unreachable */
- }
-
- out_token->t = DUK_TOK_EOF;
- out_token->t_nores = -1; /* marker: copy t if not changed */
-#if 0 /* not necessary to init, disabled for faster parsing */
- out_token->num = DUK_DOUBLE_NAN;
- out_token->str1 = NULL;
- out_token->str2 = NULL;
-#endif
- out_token->num_escapes = 0;
- /* out_token->lineterm set by caller */
-
- /* This would be nice, but parsing is faster without resetting the
- * value slots. The only side effect is that references to temporary
- * string values may linger until lexing is finished; they're then
- * freed normally.
- */
-#if 0
- duk_to_undefined((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx);
- duk_to_undefined((duk_context *) lex_ctx->thr, lex_ctx->slot2_idx);
-#endif
-
- /* 'advtok' indicates how much to advance and which token id to assign
- * at the end. This shared functionality minimizes code size. All
- * code paths are required to set 'advtok' to some value, so no default
- * init value is used. Code paths calling DUK_ERROR() never return so
- * they don't need to set advtok.
- */
-
- /*
- * Matching order:
- *
- * Punctuator first chars, also covers comments, regexps
- * LineTerminator
- * Identifier or reserved word, also covers null/true/false literals
- * NumericLiteral
- * StringLiteral
- * EOF
- *
- * The order does not matter as long as the longest match is
- * always correctly identified. There are order dependencies
- * in the clauses, so it's not trivial to convert to a switch.
- */
-
- restart_lineupdate:
- out_token->start_line = lex_ctx->window[0].line;
-
- restart:
- out_token->start_offset = lex_ctx->window[0].offset;
-
- x = DUK__L0();
-
- switch (x) {
- case DUK_ASC_SPACE:
- case DUK_ASC_HT: /* fast paths for space and tab */
- DUK__ADVANCECHARS(lex_ctx, 1);
- goto restart;
- case DUK_ASC_LF: /* LF line terminator; CR LF and Unicode lineterms are handled in slow path */
- DUK__ADVANCECHARS(lex_ctx, 1);
- got_lineterm = 1;
- goto restart_lineupdate;
- case DUK_ASC_SLASH: /* '/' */
- if (DUK__L1() == '/') {
- /*
- * E5 Section 7.4, allow SourceCharacter (which is any 16-bit
- * code point).
- */
-
- /* DUK__ADVANCECHARS(lex_ctx, 2) would be correct here, but it unnecessary */
- for (;;) {
- x = DUK__L0();
- if (x < 0 || duk_unicode_is_line_terminator(x)) {
- break;
- }
- DUK__ADVANCECHARS(lex_ctx, 1);
- }
- goto restart; /* line terminator will be handled on next round */
- } else if (DUK__L1() == '*') {
- /*
- * E5 Section 7.4. If the multi-line comment contains a newline,
- * it is treated like a single line terminator for automatic
- * semicolon insertion.
- */
-
- duk_bool_t last_asterisk = 0;
- DUK__ADVANCECHARS(lex_ctx, 2);
- for (;;) {
- x = DUK__L0();
- if (x < 0) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "eof in multiline comment");
- }
- DUK__ADVANCECHARS(lex_ctx, 1);
- if (last_asterisk && x == '/') {
- break;
- }
- if (duk_unicode_is_line_terminator(x)) {
- got_lineterm = 1;
- }
- last_asterisk = (x == '*');
- }
- goto restart_lineupdate;
- } else if (regexp_mode) {
-#if defined(DUK_USE_REGEXP_SUPPORT)
- /*
- * "/" followed by something in regexp mode. See E5 Section 7.8.5.
- *
- * RegExp parsing is a bit complex. First, the regexp body is delimited
- * by forward slashes, but the body may also contain forward slashes as
- * part of an escape sequence or inside a character class (delimited by
- * square brackets). A mini state machine is used to implement these.
- *
- * Further, an early (parse time) error must be thrown if the regexp
- * would cause a run-time error when used in the expression new RegExp(...).
- * Parsing here simply extracts the (candidate) regexp, and also accepts
- * invalid regular expressions (which are delimited properly). The caller
- * (compiler) must perform final validation and regexp compilation.
- *
- * RegExp first char may not be '/' (single line comment) or '*' (multi-
- * line comment). These have already been checked above, so there is no
- * need below for special handling of the first regexp character as in
- * the E5 productions.
- *
- * About unicode escapes within regexp literals:
- *
- * E5 Section 7.8.5 grammar does NOT accept \uHHHH escapes.
- * However, Section 6 states that regexps accept the escapes,
- * see paragraph starting with "In string literals...".
- * The regexp grammar, which sees the decoded regexp literal
- * (after lexical parsing) DOES have a \uHHHH unicode escape.
- * So, for instance:
- *
- * /\u1234/
- *
- * should first be parsed by the lexical grammar as:
- *
- * '\' 'u' RegularExpressionBackslashSequence
- * '1' RegularExpressionNonTerminator
- * '2' RegularExpressionNonTerminator
- * '3' RegularExpressionNonTerminator
- * '4' RegularExpressionNonTerminator
- *
- * and the escape itself is then parsed by the regexp engine.
- * This is the current implementation.
- *
- * Minor spec inconsistency:
- *
- * E5 Section 7.8.5 RegularExpressionBackslashSequence is:
- *
- * \ RegularExpressionNonTerminator
- *
- * while Section A.1 RegularExpressionBackslashSequence is:
- *
- * \ NonTerminator
- *
- * The latter is not normative and a typo.
- *
- */
-
- /* first, parse regexp body roughly */
-
- duk_small_int_t state = 0; /* 0=base, 1=esc, 2=class, 3=class+esc */
-
- DUK__INITBUFFER(lex_ctx);
- for (;;) {
- DUK__ADVANCECHARS(lex_ctx, 1); /* skip opening slash on first loop */
- x = DUK__L0();
- if (x < 0 || duk_unicode_is_line_terminator(x)) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "eof or line terminator in regexp");
- }
- x = DUK__L0(); /* re-read to avoid spill / fetch */
- if (state == 0) {
- if (x == '/') {
- DUK__ADVANCECHARS(lex_ctx, 1); /* eat closing slash */
- break;
- } else if (x == '\\') {
- state = 1;
- } else if (x == '[') {
- state = 2;
- }
- } else if (state == 1) {
- state = 0;
- } else if (state == 2) {
- if (x == ']') {
- state = 0;
- } else if (x == '\\') {
- state = 3;
- }
- } else { /* state == 3 */
- state = 2;
- }
- DUK__APPENDBUFFER(lex_ctx, x);
- }
- duk__internbuffer(lex_ctx, lex_ctx->slot1_idx);
- out_token->str1 = duk_get_hstring((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx);
-
- /* second, parse flags */
-
- DUK__INITBUFFER(lex_ctx);
- for (;;) {
- x = DUK__L0();
- if (!duk_unicode_is_identifier_part(x)) {
- break;
- }
- x = DUK__L0(); /* re-read to avoid spill / fetch */
- DUK__APPENDBUFFER(lex_ctx, x);
- DUK__ADVANCECHARS(lex_ctx, 1);
- }
- duk__internbuffer(lex_ctx, lex_ctx->slot2_idx);
- out_token->str2 = duk_get_hstring((duk_context *) lex_ctx->thr, lex_ctx->slot2_idx);
-
- DUK__INITBUFFER(lex_ctx); /* free some memory */
-
- /* validation of the regexp is caller's responsibility */
-
- advtok = DUK__ADVTOK(0, DUK_TOK_REGEXP);
-#else
- DUK_ERROR_SYNTAX(lex_ctx->thr, "regexp support disabled");
-#endif
- } else if (DUK__L1() == '=') {
- /* "/=" and not in regexp mode */
- advtok = DUK__ADVTOK(2, DUK_TOK_DIV_EQ);
- } else {
- /* "/" and not in regexp mode */
- advtok = DUK__ADVTOK(1, DUK_TOK_DIV);
- }
- break;
- case DUK_ASC_LCURLY: /* '{' */
- advtok = DUK__ADVTOK(1, DUK_TOK_LCURLY);
- break;
- case DUK_ASC_RCURLY: /* '}' */
- advtok = DUK__ADVTOK(1, DUK_TOK_RCURLY);
- break;
- case DUK_ASC_LPAREN: /* '(' */
- advtok = DUK__ADVTOK(1, DUK_TOK_LPAREN);
- break;
- case DUK_ASC_RPAREN: /* ')' */
- advtok = DUK__ADVTOK(1, DUK_TOK_RPAREN);
- break;
- case DUK_ASC_LBRACKET: /* '[' */
- advtok = DUK__ADVTOK(1, DUK_TOK_LBRACKET);
- break;
- case DUK_ASC_RBRACKET: /* ']' */
- advtok = DUK__ADVTOK(1, DUK_TOK_RBRACKET);
- break;
- case DUK_ASC_PERIOD: /* '.' */
- if (DUK__ISDIGIT(DUK__L1())) {
- /* Period followed by a digit can only start DecimalLiteral
- * (handled in slow path). We could jump straight into the
- * DecimalLiteral handling but should avoid goto to inside
- * a block.
- */
- goto slow_path;
- }
- advtok = DUK__ADVTOK(1, DUK_TOK_PERIOD);
- break;
- case DUK_ASC_SEMICOLON: /* ';' */
- advtok = DUK__ADVTOK(1, DUK_TOK_SEMICOLON);
- break;
- case DUK_ASC_COMMA: /* ',' */
- advtok = DUK__ADVTOK(1, DUK_TOK_COMMA);
- break;
- case DUK_ASC_LANGLE: /* '<' */
- if (DUK__L1() == '<' && DUK__L2() == '=') {
- advtok = DUK__ADVTOK(3, DUK_TOK_ALSHIFT_EQ);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_LE);
- } else if (DUK__L1() == '<') {
- advtok = DUK__ADVTOK(2, DUK_TOK_ALSHIFT);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_LT);
- }
- break;
- case DUK_ASC_RANGLE: /* '>' */
- if (DUK__L1() == '>' && DUK__L2() == '>' && DUK__L3() == '=') {
- advtok = DUK__ADVTOK(4, DUK_TOK_RSHIFT_EQ);
- } else if (DUK__L1() == '>' && DUK__L2() == '>') {
- advtok = DUK__ADVTOK(3, DUK_TOK_RSHIFT);
- } else if (DUK__L1() == '>' && DUK__L2() == '=') {
- advtok = DUK__ADVTOK(3, DUK_TOK_ARSHIFT_EQ);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_GE);
- } else if (DUK__L1() == '>') {
- advtok = DUK__ADVTOK(2, DUK_TOK_ARSHIFT);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_GT);
- }
- break;
- case DUK_ASC_EQUALS: /* '=' */
- if (DUK__L1() == '=' && DUK__L2() == '=') {
- advtok = DUK__ADVTOK(3, DUK_TOK_SEQ);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_EQUALSIGN);
- }
- break;
- case DUK_ASC_EXCLAMATION: /* '!' */
- if (DUK__L1() == '=' && DUK__L2() == '=') {
- advtok = DUK__ADVTOK(3, DUK_TOK_SNEQ);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_NEQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_LNOT);
- }
- break;
- case DUK_ASC_PLUS: /* '+' */
- if (DUK__L1() == '+') {
- advtok = DUK__ADVTOK(2, DUK_TOK_INCREMENT);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_ADD_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_ADD);
- }
- break;
- case DUK_ASC_MINUS: /* '-' */
- if (DUK__L1() == '-') {
- advtok = DUK__ADVTOK(2, DUK_TOK_DECREMENT);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_SUB_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_SUB);
- }
- break;
- case DUK_ASC_STAR: /* '*' */
- if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_MUL_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_MUL);
- }
- break;
- case DUK_ASC_PERCENT: /* '%' */
- if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_MOD_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_MOD);
- }
- break;
- case DUK_ASC_AMP: /* '&' */
- if (DUK__L1() == '&') {
- advtok = DUK__ADVTOK(2, DUK_TOK_LAND);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_BAND_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_BAND);
- }
- break;
- case DUK_ASC_PIPE: /* '|' */
- if (DUK__L1() == '|') {
- advtok = DUK__ADVTOK(2, DUK_TOK_LOR);
- } else if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_BOR_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_BOR);
- }
- break;
- case DUK_ASC_CARET: /* '^' */
- if (DUK__L1() == '=') {
- advtok = DUK__ADVTOK(2, DUK_TOK_BXOR_EQ);
- } else {
- advtok = DUK__ADVTOK(1, DUK_TOK_BXOR);
- }
- break;
- case DUK_ASC_TILDE: /* '~' */
- advtok = DUK__ADVTOK(1, DUK_TOK_BNOT);
- break;
- case DUK_ASC_QUESTION: /* '?' */
- advtok = DUK__ADVTOK(1, DUK_TOK_QUESTION);
- break;
- case DUK_ASC_COLON: /* ':' */
- advtok = DUK__ADVTOK(1, DUK_TOK_COLON);
- break;
- case DUK_ASC_DOUBLEQUOTE: /* '"' */
- case DUK_ASC_SINGLEQUOTE: { /* '\'' */
- duk_small_int_t quote = x; /* Note: duk_uint8_t type yields larger code */
- duk_small_int_t adv;
-
- DUK__INITBUFFER(lex_ctx);
- for (;;) {
- DUK__ADVANCECHARS(lex_ctx, 1); /* eat opening quote on first loop */
- x = DUK__L0();
- if (x < 0 || duk_unicode_is_line_terminator(x)) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "eof or line terminator in string literal");
- }
- if (x == quote) {
- DUK__ADVANCECHARS(lex_ctx, 1); /* eat closing quote */
- break;
- }
- if (x == '\\') {
- /* DUK__L0 -> '\' char
- * DUK__L1 ... DUK__L5 -> more lookup
- */
-
- x = DUK__L1();
-
- /* How much to advance before next loop; note that next loop
- * will advance by 1 anyway, so -1 from the total escape
- * length (e.g. len('\uXXXX') - 1 = 6 - 1). As a default,
- * 1 is good.
- */
- adv = 2 - 1; /* note: long live range */
-
- if (x < 0) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "eof or line terminator in string literal");
- }
- if (duk_unicode_is_line_terminator(x)) {
- /* line continuation */
- if (x == 0x000d && DUK__L2() == 0x000a) {
- /* CR LF again a special case */
- adv = 3 - 1;
- }
- } else if (x == '\'') {
- DUK__APPENDBUFFER(lex_ctx, 0x0027);
- } else if (x == '"') {
- DUK__APPENDBUFFER(lex_ctx, 0x0022);
- } else if (x == '\\') {
- DUK__APPENDBUFFER(lex_ctx, 0x005c);
- } else if (x == 'b') {
- DUK__APPENDBUFFER(lex_ctx, 0x0008);
- } else if (x == 'f') {
- DUK__APPENDBUFFER(lex_ctx, 0x000c);
- } else if (x == 'n') {
- DUK__APPENDBUFFER(lex_ctx, 0x000a);
- } else if (x == 'r') {
- DUK__APPENDBUFFER(lex_ctx, 0x000d);
- } else if (x == 't') {
- DUK__APPENDBUFFER(lex_ctx, 0x0009);
- } else if (x == 'v') {
- DUK__APPENDBUFFER(lex_ctx, 0x000b);
- } else if (x == 'x') {
- adv = 4 - 1;
- DUK__APPENDBUFFER(lex_ctx, duk__decode_hexesc_from_window(lex_ctx, 2));
- } else if (x == 'u') {
- adv = 6 - 1;
- DUK__APPENDBUFFER(lex_ctx, duk__decode_uniesc_from_window(lex_ctx, 2));
- } else if (DUK__ISDIGIT(x)) {
- duk_codepoint_t ch = 0; /* initialized to avoid warnings of unused var */
-
- /*
- * Octal escape or zero escape:
- * \0 (lookahead not DecimalDigit)
- * \1 ... \7 (lookahead not DecimalDigit)
- * \ZeroToThree OctalDigit (lookahead not DecimalDigit)
- * \FourToSeven OctalDigit (no lookahead restrictions)
- * \ZeroToThree OctalDigit OctalDigit (no lookahead restrictions)
- *
- * Zero escape is part of the standard syntax. Octal escapes are
- * defined in E5 Section B.1.2, and are only allowed in non-strict mode.
- * Any other productions starting with a decimal digit are invalid.
- */
-
- if (x == '0' && !DUK__ISDIGIT(DUK__L2())) {
- /* Zero escape (also allowed in non-strict mode) */
- ch = 0;
- /* adv = 2 - 1 default OK */
-#if defined(DUK_USE_OCTAL_SUPPORT)
- } else if (strict_mode) {
- /* No other escape beginning with a digit in strict mode */
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid escape in string literal");
- } else if (DUK__ISDIGIT03(x) && DUK__ISOCTDIGIT(DUK__L2()) && DUK__ISOCTDIGIT(DUK__L3())) {
- /* Three digit octal escape, digits validated. */
- adv = 4 - 1;
- ch = (duk__hexval(lex_ctx, x) << 6) +
- (duk__hexval(lex_ctx, DUK__L2()) << 3) +
- duk__hexval(lex_ctx, DUK__L3());
- } else if (((DUK__ISDIGIT03(x) && !DUK__ISDIGIT(DUK__L3())) || DUK__ISDIGIT47(x)) &&
- DUK__ISOCTDIGIT(DUK__L2())) {
- /* Two digit octal escape, digits validated.
- *
- * The if-condition is a bit tricky. We could catch e.g.
- * '\039' in the three-digit escape and fail it there (by
- * validating the digits), but we want to avoid extra
- * additional validation code.
- */
- adv = 3 - 1;
- ch = (duk__hexval(lex_ctx, x) << 3) +
- duk__hexval(lex_ctx, DUK__L2());
- } else if (DUK__ISDIGIT(x) && !DUK__ISDIGIT(DUK__L2())) {
- /* One digit octal escape, digit validated. */
- /* adv = 2 default OK */
- ch = duk__hexval(lex_ctx, x);
-#else
- /* fall through to error */
-#endif
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid escape in string literal");
- }
-
- DUK__APPENDBUFFER(lex_ctx, ch);
- } else {
- /* escaped NonEscapeCharacter */
- DUK__APPENDBUFFER(lex_ctx, x);
- }
- DUK__ADVANCECHARS(lex_ctx, adv);
-
- /* Track number of escapes; count not really needed but directive
- * prologues need to detect whether there were any escapes or line
- * continuations or not.
- */
- out_token->num_escapes++;
- } else {
- /* part of string */
- DUK__APPENDBUFFER(lex_ctx, x);
- }
- }
-
- duk__internbuffer(lex_ctx, lex_ctx->slot1_idx);
- out_token->str1 = duk_get_hstring((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx);
-
- DUK__INITBUFFER(lex_ctx); /* free some memory */
-
- advtok = DUK__ADVTOK(0, DUK_TOK_STRING);
- break;
- }
- default:
- goto slow_path;
- } /* switch */
-
- goto skip_slow_path;
-
- slow_path:
- if (duk_unicode_is_line_terminator(x)) {
- if (x == 0x000d && DUK__L1() == 0x000a) {
- /*
- * E5 Section 7.3: CR LF is detected as a single line terminator for
- * line numbers. Here we also detect it as a single line terminator
- * token.
- */
- DUK__ADVANCECHARS(lex_ctx, 2);
- } else {
- DUK__ADVANCECHARS(lex_ctx, 1);
- }
- got_lineterm = 1;
- goto restart_lineupdate;
- } else if (duk_unicode_is_identifier_start(x) || x == '\\') {
- /*
- * Parse an identifier and then check whether it is:
- * - reserved word (keyword or other reserved word)
- * - "null" (NullLiteral)
- * - "true" (BooleanLiteral)
- * - "false" (BooleanLiteral)
- * - anything else => identifier
- *
- * This does not follow the E5 productions cleanly, but is
- * useful and compact.
- *
- * Note that identifiers may contain Unicode escapes,
- * see E5 Sections 6 and 7.6. They must be decoded first,
- * and the result checked against allowed characters.
- * The above if-clause accepts an identifier start and an
- * '\' character -- no other token can begin with a '\'.
- *
- * Note that "get" and "set" are not reserved words in E5
- * specification so they are recognized as plain identifiers
- * (the tokens DUK_TOK_GET and DUK_TOK_SET are actually not
- * used now). The compiler needs to work around this.
- *
- * Strictly speaking, following Ecmascript longest match
- * specification, an invalid escape for the first character
- * should cause a syntax error. However, an invalid escape
- * for IdentifierParts should just terminate the identifier
- * early (longest match), and let the next tokenization
- * fail. For instance Rhino croaks with 'foo\z' when
- * parsing the identifier. This has little practical impact.
- */
-
- duk_small_int_t i, i_end;
- duk_bool_t first = 1;
- duk_hstring *str;
-
- DUK__INITBUFFER(lex_ctx);
- for (;;) {
- /* re-lookup first char on first loop */
- if (DUK__L0() == '\\') {
- duk_codepoint_t ch;
- if (DUK__L1() != 'u') {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid unicode escape in identifier");
- }
-
- ch = duk__decode_uniesc_from_window(lex_ctx, 2);
-
- /* IdentifierStart is stricter than IdentifierPart, so if the first
- * character is escaped, must have a stricter check here.
- */
- if (!(first ? duk_unicode_is_identifier_start(ch) : duk_unicode_is_identifier_part(ch))) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid unicode escape in identifier");
- }
- DUK__APPENDBUFFER(lex_ctx, ch);
- DUK__ADVANCECHARS(lex_ctx, 6);
-
- /* Track number of escapes: necessary for proper keyword
- * detection.
- */
- out_token->num_escapes++;
- } else {
- /* Note: first character is checked against this. But because
- * IdentifierPart includes all IdentifierStart characters, and
- * the first character (if unescaped) has already been checked
- * in the if condition, this is OK.
- */
- if (!duk_unicode_is_identifier_part(DUK__L0())) {
- break;
- }
- DUK__APPENDBUFFER(lex_ctx, DUK__L0());
- DUK__ADVANCECHARS(lex_ctx, 1);
- }
- first = 0;
- }
-
- duk__internbuffer(lex_ctx, lex_ctx->slot1_idx);
- out_token->str1 = duk_get_hstring((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx);
- str = out_token->str1;
- DUK_ASSERT(str != NULL);
- out_token->t_nores = DUK_TOK_IDENTIFIER;
-
- DUK__INITBUFFER(lex_ctx); /* free some memory */
-
- /*
- * Interned identifier is compared against reserved words, which are
- * currently interned into the heap context. See genbuiltins.py.
- *
- * Note that an escape in the identifier disables recognition of
- * keywords; e.g. "\u0069f = 1;" is a valid statement (assigns to
- * identifier named "if"). This is not necessarily compliant,
- * see test-dec-escaped-char-in-keyword.js.
- *
- * Note: "get" and "set" are awkward. They are not officially
- * ReservedWords (and indeed e.g. "var set = 1;" is valid), and
- * must come out as DUK_TOK_IDENTIFIER. The compiler needs to
- * work around this a bit.
- */
-
- /* XXX: optimize by adding the token numbers directly into the
- * always interned duk_hstring objects (there should be enough
- * flag bits free for that)?
- */
-
- i_end = (strict_mode ? DUK_STRIDX_END_RESERVED : DUK_STRIDX_START_STRICT_RESERVED);
-
- advtok = DUK__ADVTOK(0, DUK_TOK_IDENTIFIER);
- if (out_token->num_escapes == 0) {
- for (i = DUK_STRIDX_START_RESERVED; i < i_end; i++) {
- DUK_ASSERT(i >= 0 && i < DUK_HEAP_NUM_STRINGS);
- if (DUK_HTHREAD_GET_STRING(lex_ctx->thr, i) == str) {
- advtok = DUK__ADVTOK(0, DUK_STRIDX_TO_TOK(i));
- break;
- }
- }
- }
- } else if (DUK__ISDIGIT(x) || (x == '.')) {
- /* Note: decimal number may start with a period, but must be followed by a digit */
-
- /*
- * DecimalLiteral, HexIntegerLiteral, OctalIntegerLiteral
- * "pre-parsing", followed by an actual, accurate parser step.
- *
- * Note: the leading sign character ('+' or '-') is -not- part of
- * the production in E5 grammar, and that the a DecimalLiteral
- * starting with a '0' must be followed by a non-digit. Leading
- * zeroes are syntax errors and must be checked for.
- *
- * XXX: the two step parsing process is quite awkward, it would
- * be more straightforward to allow numconv to parse the longest
- * valid prefix (it already does that, it only needs to indicate
- * where the input ended). However, the lexer decodes characters
- * using a lookup window, so this is not a trivial change.
- */
-
- /* XXX: because of the final check below (that the literal is not
- * followed by a digit), this could maybe be simplified, if we bail
- * out early from a leading zero (and if there are no periods etc).
- * Maybe too complex.
- */
-
- duk_double_t val;
- duk_bool_t int_only = 0;
- duk_bool_t allow_hex = 0;
- duk_small_int_t state; /* 0=before period/exp,
- * 1=after period, before exp
- * 2=after exp, allow '+' or '-'
- * 3=after exp and exp sign
- */
- duk_small_uint_t s2n_flags;
- duk_codepoint_t y;
-
- DUK__INITBUFFER(lex_ctx);
- y = DUK__L1();
- if (x == '0' && (y == 'x' || y == 'X')) {
- DUK__APPENDBUFFER(lex_ctx, x);
- DUK__APPENDBUFFER(lex_ctx, y);
- DUK__ADVANCECHARS(lex_ctx, 2);
- int_only = 1;
- allow_hex = 1;
-#if defined(DUK_USE_OCTAL_SUPPORT)
- } else if (!strict_mode && x == '0' && DUK__ISDIGIT(y)) {
- /* Note: if DecimalLiteral starts with a '0', it can only be
- * followed by a period or an exponent indicator which starts
- * with 'e' or 'E'. Hence the if-check above ensures that
- * OctalIntegerLiteral is the only valid NumericLiteral
- * alternative at this point (even if y is, say, '9').
- */
-
- DUK__APPENDBUFFER(lex_ctx, x);
- DUK__ADVANCECHARS(lex_ctx, 1);
- int_only = 1;
-#endif
- }
-
- state = 0;
- for (;;) {
- x = DUK__L0(); /* re-lookup curr char on first round */
- if (DUK__ISDIGIT(x)) {
- /* Note: intentionally allow leading zeroes here, as the
- * actual parser will check for them.
- */
- if (state == 2) {
- state = 3;
- }
- } else if (allow_hex && DUK__ISHEXDIGIT(x)) {
- /* Note: 'e' and 'E' are also accepted here. */
- ;
- } else if (x == '.') {
- if (state >= 1 || int_only) {
- break;
- } else {
- state = 1;
- }
- } else if (x == 'e' || x == 'E') {
- if (state >= 2 || int_only) {
- break;
- } else {
- state = 2;
- }
- } else if (x == '-' || x == '+') {
- if (state != 2) {
- break;
- } else {
- state = 3;
- }
- } else {
- break;
- }
- DUK__APPENDBUFFER(lex_ctx, x);
- DUK__ADVANCECHARS(lex_ctx, 1);
- }
-
- /* XXX: better coercion */
- duk__internbuffer(lex_ctx, lex_ctx->slot1_idx);
-
- s2n_flags = DUK_S2N_FLAG_ALLOW_EXP |
- DUK_S2N_FLAG_ALLOW_FRAC |
- DUK_S2N_FLAG_ALLOW_NAKED_FRAC |
- DUK_S2N_FLAG_ALLOW_EMPTY_FRAC |
-#if defined(DUK_USE_OCTAL_SUPPORT)
- (strict_mode ? 0 : DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT) |
-#endif
- DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT;
-
- duk_dup((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx);
- duk_numconv_parse((duk_context *) lex_ctx->thr, 10 /*radix*/, s2n_flags);
- val = duk_to_number((duk_context *) lex_ctx->thr, -1);
- if (DUK_ISNAN(val)) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid numeric literal");
- }
- duk_replace((duk_context *) lex_ctx->thr, lex_ctx->slot1_idx); /* could also just pop? */
-
- DUK__INITBUFFER(lex_ctx); /* free some memory */
-
- /* Section 7.8.3 (note): NumericLiteral must be followed by something other than
- * IdentifierStart or DecimalDigit.
- */
-
- if (DUK__ISDIGIT(DUK__L0()) || duk_unicode_is_identifier_start(DUK__L0())) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid numeric literal");
- }
-
- out_token->num = val;
- advtok = DUK__ADVTOK(0, DUK_TOK_NUMBER);
- } else if (duk_unicode_is_whitespace(DUK__LOOKUP(lex_ctx, 0))) {
- DUK__ADVANCECHARS(lex_ctx, 1);
- goto restart;
- } else if (x < 0) {
- advtok = DUK__ADVTOK(0, DUK_TOK_EOF);
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid token");
- }
- skip_slow_path:
-
- /*
- * Shared exit path
- */
-
- DUK__ADVANCEBYTES(lex_ctx, advtok >> 8);
- out_token->t = advtok & 0xff;
- if (out_token->t_nores < 0) {
- out_token->t_nores = out_token->t;
- }
- out_token->lineterm = got_lineterm;
-
- /* Automatic semicolon insertion is allowed if a token is preceded
- * by line terminator(s), or terminates a statement list (right curly
- * or EOF).
- */
- if (got_lineterm || out_token->t == DUK_TOK_RCURLY || out_token->t == DUK_TOK_EOF) {
- out_token->allow_auto_semi = 1;
- } else {
- out_token->allow_auto_semi = 0;
- }
-}
-
-#if defined(DUK_USE_REGEXP_SUPPORT)
-
-/*
- * Parse a RegExp token. The grammar is described in E5 Section 15.10.
- * Terminal constructions (such as quantifiers) are parsed directly here.
- *
- * 0xffffffffU is used as a marker for "infinity" in quantifiers. Further,
- * DUK__MAX_RE_QUANT_DIGITS limits the maximum number of digits that
- * will be accepted for a quantifier.
- */
-
-DUK_INTERNAL void duk_lexer_parse_re_token(duk_lexer_ctx *lex_ctx, duk_re_token *out_token) {
- duk_small_int_t advtok = 0; /* init is unnecessary but suppresses "may be used uninitialized" warnings */
- duk_codepoint_t x, y;
-
- if (++lex_ctx->token_count >= lex_ctx->token_limit) {
- DUK_ERROR_RANGE(lex_ctx->thr, "token limit");
- return; /* unreachable */
- }
-
- DUK_MEMZERO(out_token, sizeof(*out_token));
-
- x = DUK__L0();
- y = DUK__L1();
-
- DUK_DDD(DUK_DDDPRINT("parsing regexp token, L0=%ld, L1=%ld", (long) x, (long) y));
-
- switch (x) {
- case '|': {
- advtok = DUK__ADVTOK(1, DUK_RETOK_DISJUNCTION);
- break;
- }
- case '^': {
- advtok = DUK__ADVTOK(1, DUK_RETOK_ASSERT_START);
- break;
- }
- case '$': {
- advtok = DUK__ADVTOK(1, DUK_RETOK_ASSERT_END);
- break;
- }
- case '?': {
- out_token->qmin = 0;
- out_token->qmax = 1;
- if (y == '?') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 0;
- } else {
- advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 1;
- }
- break;
- }
- case '*': {
- out_token->qmin = 0;
- out_token->qmax = DUK_RE_QUANTIFIER_INFINITE;
- if (y == '?') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 0;
- } else {
- advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 1;
- }
- break;
- }
- case '+': {
- out_token->qmin = 1;
- out_token->qmax = DUK_RE_QUANTIFIER_INFINITE;
- if (y == '?') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 0;
- } else {
- advtok = DUK__ADVTOK(1, DUK_RETOK_QUANTIFIER);
- out_token->greedy = 1;
- }
- break;
- }
- case '{': {
- /* Production allows 'DecimalDigits', including leading zeroes */
- duk_uint_fast32_t val1 = 0;
- duk_uint_fast32_t val2 = DUK_RE_QUANTIFIER_INFINITE;
- duk_small_int_t digits = 0;
-#if defined(DUK_USE_ES6_REGEXP_BRACES)
- duk_lexer_point lex_pt;
-#endif
-
-#if defined(DUK_USE_ES6_REGEXP_BRACES)
- /* Store lexer position, restoring if quantifier is invalid. */
- DUK_LEXER_GETPOINT(lex_ctx, &lex_pt);
-#endif
-
- for (;;) {
- DUK__ADVANCECHARS(lex_ctx, 1); /* eat '{' on entry */
- x = DUK__L0();
- if (DUK__ISDIGIT(x)) {
- digits++;
- val1 = val1 * 10 + (duk_uint_fast32_t) duk__hexval(lex_ctx, x);
- } else if (x == ',') {
- if (digits > DUK__MAX_RE_QUANT_DIGITS) {
- goto invalid_quantifier;
- }
- if (val2 != DUK_RE_QUANTIFIER_INFINITE) {
- goto invalid_quantifier;
- }
- if (DUK__L1() == '}') {
- /* form: { DecimalDigits , }, val1 = min count */
- if (digits == 0) {
- goto invalid_quantifier;
- }
- out_token->qmin = val1;
- out_token->qmax = DUK_RE_QUANTIFIER_INFINITE;
- DUK__ADVANCECHARS(lex_ctx, 2);
- break;
- }
- val2 = val1;
- val1 = 0;
- digits = 0; /* not strictly necessary because of lookahead '}' above */
- } else if (x == '}') {
- if (digits > DUK__MAX_RE_QUANT_DIGITS) {
- goto invalid_quantifier;
- }
- if (digits == 0) {
- goto invalid_quantifier;
- }
- if (val2 != DUK_RE_QUANTIFIER_INFINITE) {
- /* val2 = min count, val1 = max count */
- out_token->qmin = val2;
- out_token->qmax = val1;
- } else {
- /* val1 = count */
- out_token->qmin = val1;
- out_token->qmax = val1;
- }
- DUK__ADVANCECHARS(lex_ctx, 1);
- break;
- } else {
- goto invalid_quantifier;
- }
- }
- if (DUK__L0() == '?') {
- out_token->greedy = 0;
- DUK__ADVANCECHARS(lex_ctx, 1);
- } else {
- out_token->greedy = 1;
- }
- advtok = DUK__ADVTOK(0, DUK_RETOK_QUANTIFIER);
- break;
- invalid_quantifier:
-#if defined(DUK_USE_ES6_REGEXP_BRACES)
- /* Failed to match the quantifier, restore lexer and parse
- * opening brace as a literal.
- */
- DUK_LEXER_SETPOINT(lex_ctx, &lex_pt);
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_CHAR);
- out_token->num = '{';
-#else
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp quantifier");
-#endif
- break;
- }
- case '.': {
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_PERIOD);
- break;
- }
- case '\\': {
- /* The E5.1 specification does not seem to allow IdentifierPart characters
- * to be used as identity escapes. Unfortunately this includes '$', which
- * cannot be escaped as '\$'; it needs to be escaped e.g. as '\u0024'.
- * Many other implementations (including V8 and Rhino, for instance) do
- * accept '\$' as a valid identity escape, which is quite pragmatic.
- * See: test-regexp-identity-escape-dollar.js.
- */
-
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_CHAR); /* default: char escape (two chars) */
- if (y == 'b') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ASSERT_WORD_BOUNDARY);
- } else if (y == 'B') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY);
- } else if (y == 'f') {
- out_token->num = 0x000c;
- } else if (y == 'n') {
- out_token->num = 0x000a;
- } else if (y == 't') {
- out_token->num = 0x0009;
- } else if (y == 'r') {
- out_token->num = 0x000d;
- } else if (y == 'v') {
- out_token->num = 0x000b;
- } else if (y == 'c') {
- x = DUK__L2();
- if ((x >= 'a' && x <= 'z') ||
- (x >= 'A' && x <= 'Z')) {
- out_token->num = (x % 32);
- advtok = DUK__ADVTOK(3, DUK_RETOK_ATOM_CHAR);
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- } else if (y == 'x') {
- out_token->num = duk__decode_hexesc_from_window(lex_ctx, 2);
- advtok = DUK__ADVTOK(4, DUK_RETOK_ATOM_CHAR);
- } else if (y == 'u') {
- out_token->num = duk__decode_uniesc_from_window(lex_ctx, 2);
- advtok = DUK__ADVTOK(6, DUK_RETOK_ATOM_CHAR);
- } else if (y == 'd') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_DIGIT);
- } else if (y == 'D') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_DIGIT);
- } else if (y == 's') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_WHITE);
- } else if (y == 'S') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_WHITE);
- } else if (y == 'w') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_WORD_CHAR);
- } else if (y == 'W') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_NOT_WORD_CHAR);
- } else if (DUK__ISDIGIT(y)) {
- /* E5 Section 15.10.2.11 */
- if (y == '0') {
- if (DUK__ISDIGIT(DUK__L2())) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- out_token->num = 0x0000;
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_CHAR);
- } else {
- /* XXX: shared parsing? */
- duk_uint_fast32_t val = 0;
- duk_small_int_t i;
- for (i = 0; ; i++) {
- if (i >= DUK__MAX_RE_DECESC_DIGITS) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- DUK__ADVANCECHARS(lex_ctx, 1); /* eat backslash on entry */
- x = DUK__L0();
- if (!DUK__ISDIGIT(x)) {
- break;
- }
- val = val * 10 + (duk_uint_fast32_t) duk__hexval(lex_ctx, x);
- }
- /* DUK__L0() cannot be a digit, because the loop doesn't terminate if it is */
- advtok = DUK__ADVTOK(0, DUK_RETOK_ATOM_BACKREFERENCE);
- out_token->num = val;
- }
- } else if ((y >= 0 && !duk_unicode_is_identifier_part(y)) ||
-#if defined(DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE)
- y == '$' ||
-#endif
- y == DUK_UNICODE_CP_ZWNJ ||
- y == DUK_UNICODE_CP_ZWJ) {
- /* IdentityEscape, with dollar added as a valid additional
- * non-standard escape (see test-regexp-identity-escape-dollar.js).
- * Careful not to match end-of-buffer (<0) here.
- */
- out_token->num = y;
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- break;
- }
- case '(': {
- /* XXX: naming is inconsistent: ATOM_END_GROUP ends an ASSERT_START_LOOKAHEAD */
-
- if (y == '?') {
- if (DUK__L2() == '=') {
- /* (?= */
- advtok = DUK__ADVTOK(3, DUK_RETOK_ASSERT_START_POS_LOOKAHEAD);
- } else if (DUK__L2() == '!') {
- /* (?! */
- advtok = DUK__ADVTOK(3, DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD);
- } else if (DUK__L2() == ':') {
- /* (?: */
- advtok = DUK__ADVTOK(3, DUK_RETOK_ATOM_START_NONCAPTURE_GROUP);
- }
- } else {
- /* ( */
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_START_CAPTURE_GROUP);
- }
- break;
- }
- case ')': {
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_END_GROUP);
- break;
- }
- case '[': {
- /*
- * To avoid creating a heavy intermediate value for the list of ranges,
- * only the start token ('[' or '[^') is parsed here. The regexp
- * compiler parses the ranges itself.
- */
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_START_CHARCLASS);
- if (y == '^') {
- advtok = DUK__ADVTOK(2, DUK_RETOK_ATOM_START_CHARCLASS_INVERTED);
- }
- break;
- }
-#if !defined(DUK_USE_ES6_REGEXP_BRACES)
- case '}':
-#endif
- case ']': {
- /* Although these could be parsed as PatternCharacters unambiguously (here),
- * E5 Section 15.10.1 grammar explicitly forbids these as PatternCharacters.
- */
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp character");
- break;
- }
- case -1: {
- /* EOF */
- advtok = DUK__ADVTOK(0, DUK_TOK_EOF);
- break;
- }
- default: {
- /* PatternCharacter, all excluded characters are matched by cases above */
- advtok = DUK__ADVTOK(1, DUK_RETOK_ATOM_CHAR);
- out_token->num = x;
- break;
- }
- }
-
- /*
- * Shared exit path
- */
-
- DUK__ADVANCEBYTES(lex_ctx, advtok >> 8);
- out_token->t = advtok & 0xff;
-}
-
-/*
- * Special parser for character classes; calls callback for every
- * range parsed and returns the number of ranges present.
- */
-
-/* XXX: this duplicates functionality in duk_regexp.c where a similar loop is
- * required anyway. We could use that BUT we need to update the regexp compiler
- * 'nranges' too. Work this out a bit more cleanly to save space.
- */
-
-/* XXX: the handling of character range detection is a bit convoluted.
- * Try to simplify and make smaller.
- */
-
-/* XXX: logic for handling character ranges is now incorrect, it will accept
- * e.g. [\d-z] whereas it should croak from it? SMJS accepts this too, though.
- *
- * Needs a read through and a lot of additional tests.
- */
-
-DUK_LOCAL
-void duk__emit_u16_direct_ranges(duk_lexer_ctx *lex_ctx,
- duk_re_range_callback gen_range,
- void *userdata,
- const duk_uint16_t *ranges,
- duk_small_int_t num) {
- const duk_uint16_t *ranges_end;
-
- DUK_UNREF(lex_ctx);
-
- ranges_end = ranges + num;
- while (ranges < ranges_end) {
- /* mark range 'direct', bypass canonicalization (see Wiki) */
- gen_range(userdata, (duk_codepoint_t) ranges[0], (duk_codepoint_t) ranges[1], 1);
- ranges += 2;
- }
-}
-
-DUK_INTERNAL void duk_lexer_parse_re_ranges(duk_lexer_ctx *lex_ctx, duk_re_range_callback gen_range, void *userdata) {
- duk_codepoint_t start = -1;
- duk_codepoint_t ch;
- duk_codepoint_t x;
- duk_bool_t dash = 0;
-
- DUK_DD(DUK_DDPRINT("parsing regexp ranges"));
-
- for (;;) {
- x = DUK__L0();
- DUK__ADVANCECHARS(lex_ctx, 1);
-
- ch = -1; /* not strictly necessary, but avoids "uninitialized variable" warnings */
- DUK_UNREF(ch);
-
- if (x < 0) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "eof in character class");
- } else if (x == ']') {
- DUK_ASSERT(!dash); /* lookup should prevent this */
- if (start >= 0) {
- gen_range(userdata, start, start, 0);
- }
- break;
- } else if (x == '-') {
- if (start >= 0 && !dash && DUK__L0() != ']') {
- /* '-' as a range indicator */
- dash = 1;
- continue;
- } else {
- /* '-' verbatim */
- ch = x;
- }
- } else if (x == '\\') {
- /*
- * The escapes are same as outside a character class, except that \b has a
- * different meaning, and \B and backreferences are prohibited (see E5
- * Section 15.10.2.19). However, it's difficult to share code because we
- * handle e.g. "\n" very differently: here we generate a single character
- * range for it.
- */
-
- x = DUK__L0();
- DUK__ADVANCECHARS(lex_ctx, 1);
-
- if (x == 'b') {
- /* Note: '\b' in char class is different than outside (assertion),
- * '\B' is not allowed and is caught by the duk_unicode_is_identifier_part()
- * check below.
- */
- ch = 0x0008;
- } else if (x == 'f') {
- ch = 0x000c;
- } else if (x == 'n') {
- ch = 0x000a;
- } else if (x == 't') {
- ch = 0x0009;
- } else if (x == 'r') {
- ch = 0x000d;
- } else if (x == 'v') {
- ch = 0x000b;
- } else if (x == 'c') {
- x = DUK__L0();
- DUK__ADVANCECHARS(lex_ctx, 1);
- if ((x >= 'a' && x <= 'z') ||
- (x >= 'A' && x <= 'Z')) {
- ch = (x % 32);
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- return; /* never reached, but avoids warnings of
- * potentially unused variables.
- */
- }
- } else if (x == 'x') {
- ch = duk__decode_hexesc_from_window(lex_ctx, 0);
- DUK__ADVANCECHARS(lex_ctx, 2);
- } else if (x == 'u') {
- ch = duk__decode_uniesc_from_window(lex_ctx, 0);
- DUK__ADVANCECHARS(lex_ctx, 4);
- } else if (x == 'd') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_digit,
- sizeof(duk_unicode_re_ranges_digit) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (x == 'D') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_not_digit,
- sizeof(duk_unicode_re_ranges_not_digit) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (x == 's') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_white,
- sizeof(duk_unicode_re_ranges_white) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (x == 'S') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_not_white,
- sizeof(duk_unicode_re_ranges_not_white) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (x == 'w') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_wordchar,
- sizeof(duk_unicode_re_ranges_wordchar) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (x == 'W') {
- duk__emit_u16_direct_ranges(lex_ctx,
- gen_range,
- userdata,
- duk_unicode_re_ranges_not_wordchar,
- sizeof(duk_unicode_re_ranges_not_wordchar) / sizeof(duk_uint16_t));
- ch = -1;
- } else if (DUK__ISDIGIT(x)) {
- /* DecimalEscape, only \0 is allowed, no leading zeroes are allowed */
- if (x == '0' && !DUK__ISDIGIT(DUK__L0())) {
- ch = 0x0000;
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- } else if (!duk_unicode_is_identifier_part(x)
-#if defined(DUK_USE_NONSTD_REGEXP_DOLLAR_ESCAPE)
- || x == '$'
-#endif
- ) {
- /* IdentityEscape */
- ch = x;
- } else {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid regexp escape");
- }
- } else {
- /* character represents itself */
- ch = x;
- }
-
- /* ch is a literal character here or -1 if parsed entity was
- * an escape such as "\s".
- */
-
- if (ch < 0) {
- /* multi-character sets not allowed as part of ranges, see
- * E5 Section 15.10.2.15, abstract operation CharacterRange.
- */
- if (start >= 0) {
- if (dash) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid range");
- } else {
- gen_range(userdata, start, start, 0);
- start = -1;
- /* dash is already 0 */
- }
- }
- } else {
- if (start >= 0) {
- if (dash) {
- if (start > ch) {
- DUK_ERROR_SYNTAX(lex_ctx->thr, "invalid range");
- }
- gen_range(userdata, start, ch, 0);
- start = -1;
- dash = 0;
- } else {
- gen_range(userdata, start, start, 0);
- start = ch;
- /* dash is already 0 */
- }
- } else {
- start = ch;
- }
- }
- }
-
- return;
-}
-
-#endif /* DUK_USE_REGEXP_SUPPORT */
-#line 1 "duk_numconv.c"
-/*
- * Number-to-string and string-to-number conversions.
- *
- * Slow path number-to-string and string-to-number conversion is based on
- * a Dragon4 variant, with fast paths for small integers. Big integer
- * arithmetic is needed for guaranteeing that the conversion is correct
- * and uses a minimum number of digits. The big number arithmetic has a
- * fixed maximum size and does not require dynamic allocations.
- *
- * See: doc/number-conversion.rst.
- */
-
-/* include removed: duk_internal.h */
-
-#define DUK__IEEE_DOUBLE_EXP_BIAS 1023
-#define DUK__IEEE_DOUBLE_EXP_MIN (-1022) /* biased exp == 0 -> denormal, exp -1022 */
-
-#define DUK__DIGITCHAR(x) duk_lc_digits[(x)]
-
-/*
- * Tables generated with src/gennumdigits.py.
- *
- * duk__str2num_digits_for_radix indicates, for each radix, how many input
- * digits should be considered significant for string-to-number conversion.
- * The input is also padded to this many digits to give the Dragon4
- * conversion enough (apparent) precision to work with.
- *
- * duk__str2num_exp_limits indicates, for each radix, the radix-specific
- * minimum/maximum exponent values (for a Dragon4 integer mantissa)
- * below and above which the number is guaranteed to underflow to zero
- * or overflow to Infinity. This allows parsing to keep bigint values
- * bounded.
- */
-
-DUK_LOCAL const duk_uint8_t duk__str2num_digits_for_radix[] = {
- 69, 44, 35, 30, 27, 25, 23, 22, 20, 20, /* 2 to 11 */
- 20, 19, 19, 18, 18, 17, 17, 17, 16, 16, /* 12 to 21 */
- 16, 16, 16, 15, 15, 15, 15, 15, 15, 14, /* 22 to 31 */
- 14, 14, 14, 14, 14 /* 31 to 36 */
-};
-
-typedef struct {
- duk_int16_t upper;
- duk_int16_t lower;
-} duk__exp_limits;
-
-DUK_LOCAL const duk__exp_limits duk__str2num_exp_limits[] = {
- { 957, -1147 }, { 605, -725 }, { 479, -575 }, { 414, -496 },
- { 372, -446 }, { 342, -411 }, { 321, -384 }, { 304, -364 },
- { 291, -346 }, { 279, -334 }, { 268, -323 }, { 260, -312 },
- { 252, -304 }, { 247, -296 }, { 240, -289 }, { 236, -283 },
- { 231, -278 }, { 227, -273 }, { 223, -267 }, { 220, -263 },
- { 216, -260 }, { 213, -256 }, { 210, -253 }, { 208, -249 },
- { 205, -246 }, { 203, -244 }, { 201, -241 }, { 198, -239 },
- { 196, -237 }, { 195, -234 }, { 193, -232 }, { 191, -230 },
- { 190, -228 }, { 188, -226 }, { 187, -225 },
-};
-
-/*
- * Limited functionality bigint implementation.
- *
- * Restricted to non-negative numbers with less than 32 * DUK__BI_MAX_PARTS bits,
- * with the caller responsible for ensuring this is never exceeded. No memory
- * allocation (except stack) is needed for bigint computation. Operations
- * have been tailored for number conversion needs.
- *
- * Argument order is "assignment order", i.e. target first, then arguments:
- * x <- y * z --> duk__bi_mul(x, y, z);
- */
-
-/* This upper value has been experimentally determined; debug build will check
- * bigint size with assertions.
- */
-#define DUK__BI_MAX_PARTS 37 /* 37x32 = 1184 bits */
-
-#ifdef DUK_USE_DDDPRINT
-#define DUK__BI_PRINT(name,x) duk__bi_print((name),(x))
-#else
-#define DUK__BI_PRINT(name,x)
-#endif
-
-/* Current size is about 152 bytes. */
-typedef struct {
- duk_small_int_t n;
- duk_uint32_t v[DUK__BI_MAX_PARTS]; /* low to high */
-} duk__bigint;
-
-#ifdef DUK_USE_DDDPRINT
-DUK_LOCAL void duk__bi_print(const char *name, duk__bigint *x) {
- /* Overestimate required size; debug code so not critical to be tight. */
- char buf[DUK__BI_MAX_PARTS * 9 + 64];
- char *p = buf;
- duk_small_int_t i;
-
- /* No NUL term checks in this debug code. */
- p += DUK_SPRINTF(p, "%p n=%ld", (void *) x, (long) x->n);
- if (x->n == 0) {
- p += DUK_SPRINTF(p, " 0");
- }
- for (i = x->n - 1; i >= 0; i--) {
- p += DUK_SPRINTF(p, " %08lx", (unsigned long) x->v[i]);
- }
-
- DUK_DDD(DUK_DDDPRINT("%s: %s", (const char *) name, (const char *) buf));
-}
-#endif
-
-#ifdef DUK_USE_ASSERTIONS
-DUK_LOCAL duk_small_int_t duk__bi_is_valid(duk__bigint *x) {
- return (duk_small_int_t)
- ( ((x->n >= 0) && (x->n <= DUK__BI_MAX_PARTS)) /* is valid size */ &&
- ((x->n == 0) || (x->v[x->n - 1] != 0)) /* is normalized */ );
-}
-#endif
-
-DUK_LOCAL void duk__bi_normalize(duk__bigint *x) {
- duk_small_int_t i;
-
- for (i = x->n - 1; i >= 0; i--) {
- if (x->v[i] != 0) {
- break;
- }
- }
-
- /* Note: if 'x' is zero, x->n becomes 0 here */
- x->n = i + 1;
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-
-/* x <- y */
-DUK_LOCAL void duk__bi_copy(duk__bigint *x, duk__bigint *y) {
- duk_small_int_t n;
-
- n = y->n;
- x->n = n;
- if (n == 0) {
- return;
- }
- DUK_MEMCPY((void *) x->v, (const void *) y->v, (size_t) (sizeof(duk_uint32_t) * n));
-}
-
-DUK_LOCAL void duk__bi_set_small(duk__bigint *x, duk_uint32_t v) {
- if (v == 0U) {
- x->n = 0;
- } else {
- x->n = 1;
- x->v[0] = v;
- }
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-
-/* Return value: <0 <=> x < y
- * 0 <=> x == y
- * >0 <=> x > y
- */
-DUK_LOCAL int duk__bi_compare(duk__bigint *x, duk__bigint *y) {
- duk_small_int_t i, nx, ny;
- duk_uint32_t tx, ty;
-
- DUK_ASSERT(duk__bi_is_valid(x));
- DUK_ASSERT(duk__bi_is_valid(y));
-
- nx = x->n;
- ny = y->n;
- if (nx > ny) {
- goto ret_gt;
- }
- if (nx < ny) {
- goto ret_lt;
- }
- for (i = nx - 1; i >= 0; i--) {
- tx = x->v[i];
- ty = y->v[i];
-
- if (tx > ty) {
- goto ret_gt;
- }
- if (tx < ty) {
- goto ret_lt;
- }
- }
-
- return 0;
-
- ret_gt:
- return 1;
-
- ret_lt:
- return -1;
-}
-
-/* x <- y + z */
-#ifdef DUK_USE_64BIT_OPS
-DUK_LOCAL void duk__bi_add(duk__bigint *x, duk__bigint *y, duk__bigint *z) {
- duk_uint64_t tmp;
- duk_small_int_t i, ny, nz;
-
- DUK_ASSERT(duk__bi_is_valid(y));
- DUK_ASSERT(duk__bi_is_valid(z));
-
- if (z->n > y->n) {
- duk__bigint *t;
- t = y; y = z; z = t;
- }
- DUK_ASSERT(y->n >= z->n);
-
- ny = y->n; nz = z->n;
- tmp = 0U;
- for (i = 0; i < ny; i++) {
- DUK_ASSERT(i < DUK__BI_MAX_PARTS);
- tmp += y->v[i];
- if (i < nz) {
- tmp += z->v[i];
- }
- x->v[i] = (duk_uint32_t) (tmp & 0xffffffffUL);
- tmp = tmp >> 32;
- }
- if (tmp != 0U) {
- DUK_ASSERT(i < DUK__BI_MAX_PARTS);
- x->v[i++] = (duk_uint32_t) tmp;
- }
- x->n = i;
- DUK_ASSERT(x->n <= DUK__BI_MAX_PARTS);
-
- /* no need to normalize */
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-#else /* DUK_USE_64BIT_OPS */
-DUK_LOCAL void duk__bi_add(duk__bigint *x, duk__bigint *y, duk__bigint *z) {
- duk_uint32_t carry, tmp1, tmp2;
- duk_small_int_t i, ny, nz;
-
- DUK_ASSERT(duk__bi_is_valid(y));
- DUK_ASSERT(duk__bi_is_valid(z));
-
- if (z->n > y->n) {
- duk__bigint *t;
- t = y; y = z; z = t;
- }
- DUK_ASSERT(y->n >= z->n);
-
- ny = y->n; nz = z->n;
- carry = 0U;
- for (i = 0; i < ny; i++) {
- /* Carry is detected based on wrapping which relies on exact 32-bit
- * types.
- */
- DUK_ASSERT(i < DUK__BI_MAX_PARTS);
- tmp1 = y->v[i];
- tmp2 = tmp1;
- if (i < nz) {
- tmp2 += z->v[i];
- }
-
- /* Careful with carry condition:
- * - If carry not added: 0x12345678 + 0 + 0xffffffff = 0x12345677 (< 0x12345678)
- * - If carry added: 0x12345678 + 1 + 0xffffffff = 0x12345678 (== 0x12345678)
- */
- if (carry) {
- tmp2++;
- carry = (tmp2 <= tmp1 ? 1U : 0U);
- } else {
- carry = (tmp2 < tmp1 ? 1U : 0U);
- }
-
- x->v[i] = tmp2;
- }
- if (carry) {
- DUK_ASSERT(i < DUK__BI_MAX_PARTS);
- DUK_ASSERT(carry == 1U);
- x->v[i++] = carry;
- }
- x->n = i;
- DUK_ASSERT(x->n <= DUK__BI_MAX_PARTS);
-
- /* no need to normalize */
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-#endif /* DUK_USE_64BIT_OPS */
-
-/* x <- y + z */
-DUK_LOCAL void duk__bi_add_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) {
- duk__bigint tmp;
-
- DUK_ASSERT(duk__bi_is_valid(y));
-
- /* XXX: this could be optimized; there is only one call site now though */
- duk__bi_set_small(&tmp, z);
- duk__bi_add(x, y, &tmp);
-
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-
-#if 0 /* unused */
-/* x <- x + y, use t as temp */
-DUK_LOCAL void duk__bi_add_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) {
- duk__bi_add(t, x, y);
- duk__bi_copy(x, t);
-}
-#endif
-
-/* x <- y - z, require x >= y => z >= 0, i.e. y >= z */
-#ifdef DUK_USE_64BIT_OPS
-DUK_LOCAL void duk__bi_sub(duk__bigint *x, duk__bigint *y, duk__bigint *z) {
- duk_small_int_t i, ny, nz;
- duk_uint32_t ty, tz;
- duk_int64_t tmp;
-
- DUK_ASSERT(duk__bi_is_valid(y));
- DUK_ASSERT(duk__bi_is_valid(z));
- DUK_ASSERT(duk__bi_compare(y, z) >= 0);
- DUK_ASSERT(y->n >= z->n);
-
- ny = y->n; nz = z->n;
- tmp = 0;
- for (i = 0; i < ny; i++) {
- ty = y->v[i];
- if (i < nz) {
- tz = z->v[i];
- } else {
- tz = 0;
- }
- tmp = (duk_int64_t) ty - (duk_int64_t) tz + tmp;
- x->v[i] = (duk_uint32_t) (tmp & 0xffffffffUL);
- tmp = tmp >> 32; /* 0 or -1 */
- }
- DUK_ASSERT(tmp == 0);
-
- x->n = i;
- duk__bi_normalize(x); /* need to normalize, may even cancel to 0 */
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-#else
-DUK_LOCAL void duk__bi_sub(duk__bigint *x, duk__bigint *y, duk__bigint *z) {
- duk_small_int_t i, ny, nz;
- duk_uint32_t tmp1, tmp2, borrow;
-
- DUK_ASSERT(duk__bi_is_valid(y));
- DUK_ASSERT(duk__bi_is_valid(z));
- DUK_ASSERT(duk__bi_compare(y, z) >= 0);
- DUK_ASSERT(y->n >= z->n);
-
- ny = y->n; nz = z->n;
- borrow = 0U;
- for (i = 0; i < ny; i++) {
- /* Borrow is detected based on wrapping which relies on exact 32-bit
- * types.
- */
- tmp1 = y->v[i];
- tmp2 = tmp1;
- if (i < nz) {
- tmp2 -= z->v[i];
- }
-
- /* Careful with borrow condition:
- * - If borrow not subtracted: 0x12345678 - 0 - 0xffffffff = 0x12345679 (> 0x12345678)
- * - If borrow subtracted: 0x12345678 - 1 - 0xffffffff = 0x12345678 (== 0x12345678)
- */
- if (borrow) {
- tmp2--;
- borrow = (tmp2 >= tmp1 ? 1U : 0U);
- } else {
- borrow = (tmp2 > tmp1 ? 1U : 0U);
- }
-
- x->v[i] = tmp2;
- }
- DUK_ASSERT(borrow == 0U);
-
- x->n = i;
- duk__bi_normalize(x); /* need to normalize, may even cancel to 0 */
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-#endif
-
-#if 0 /* unused */
-/* x <- y - z */
-DUK_LOCAL void duk__bi_sub_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) {
- duk__bigint tmp;
-
- DUK_ASSERT(duk__bi_is_valid(y));
-
- /* XXX: this could be optimized */
- duk__bi_set_small(&tmp, z);
- duk__bi_sub(x, y, &tmp);
-
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-#endif
-
-/* x <- x - y, use t as temp */
-DUK_LOCAL void duk__bi_sub_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) {
- duk__bi_sub(t, x, y);
- duk__bi_copy(x, t);
-}
-
-/* x <- y * z */
-DUK_LOCAL void duk__bi_mul(duk__bigint *x, duk__bigint *y, duk__bigint *z) {
- duk_small_int_t i, j, nx, nz;
-
- DUK_ASSERT(duk__bi_is_valid(y));
- DUK_ASSERT(duk__bi_is_valid(z));
-
- nx = y->n + z->n; /* max possible */
- DUK_ASSERT(nx <= DUK__BI_MAX_PARTS);
-
- if (nx == 0) {
- /* Both inputs are zero; cases where only one is zero can go
- * through main algorithm.
- */
- x->n = 0;
- return;
- }
-
- DUK_MEMZERO((void *) x->v, (size_t) (sizeof(duk_uint32_t) * nx));
- x->n = nx;
-
- nz = z->n;
- for (i = 0; i < y->n; i++) {
-#ifdef DUK_USE_64BIT_OPS
- duk_uint64_t tmp = 0U;
- for (j = 0; j < nz; j++) {
- tmp += (duk_uint64_t) y->v[i] * (duk_uint64_t) z->v[j] + x->v[i+j];
- x->v[i+j] = (duk_uint32_t) (tmp & 0xffffffffUL);
- tmp = tmp >> 32;
- }
- if (tmp > 0) {
- DUK_ASSERT(i + j < nx);
- DUK_ASSERT(i + j < DUK__BI_MAX_PARTS);
- DUK_ASSERT(x->v[i+j] == 0U);
- x->v[i+j] = (duk_uint32_t) tmp;
- }
-#else
- /*
- * Multiply + add + carry for 32-bit components using only 16x16->32
- * multiplies and carry detection based on unsigned overflow.
- *
- * 1st mult, 32-bit: (A*2^16 + B)
- * 2nd mult, 32-bit: (C*2^16 + D)
- * 3rd add, 32-bit: E
- * 4th add, 32-bit: F
- *
- * (AC*2^16 + B) * (C*2^16 + D) + E + F
- * = AC*2^32 + AD*2^16 + BC*2^16 + BD + E + F
- * = AC*2^32 + (AD + BC)*2^16 + (BD + E + F)
- * = AC*2^32 + AD*2^16 + BC*2^16 + (BD + E + F)
- */
- duk_uint32_t a, b, c, d, e, f;
- duk_uint32_t r, s, t;
-
- a = y->v[i]; b = a & 0xffffUL; a = a >> 16;
-
- f = 0;
- for (j = 0; j < nz; j++) {
- c = z->v[j]; d = c & 0xffffUL; c = c >> 16;
- e = x->v[i+j];
-
- /* build result as: (r << 32) + s: start with (BD + E + F) */
- r = 0;
- s = b * d;
-
- /* add E */
- t = s + e;
- if (t < s) { r++; } /* carry */
- s = t;
-
- /* add F */
- t = s + f;
- if (t < s) { r++; } /* carry */
- s = t;
-
- /* add BC*2^16 */
- t = b * c;
- r += (t >> 16);
- t = s + ((t & 0xffffUL) << 16);
- if (t < s) { r++; } /* carry */
- s = t;
-
- /* add AD*2^16 */
- t = a * d;
- r += (t >> 16);
- t = s + ((t & 0xffffUL) << 16);
- if (t < s) { r++; } /* carry */
- s = t;
-
- /* add AC*2^32 */
- t = a * c;
- r += t;
-
- DUK_DDD(DUK_DDDPRINT("ab=%08lx cd=%08lx ef=%08lx -> rs=%08lx %08lx",
- (unsigned long) y->v[i], (unsigned long) z->v[j],
- (unsigned long) x->v[i+j], (unsigned long) r,
- (unsigned long) s));
-
- x->v[i+j] = s;
- f = r;
- }
- if (f > 0U) {
- DUK_ASSERT(i + j < nx);
- DUK_ASSERT(i + j < DUK__BI_MAX_PARTS);
- DUK_ASSERT(x->v[i+j] == 0U);
- x->v[i+j] = (duk_uint32_t) f;
- }
-#endif /* DUK_USE_64BIT_OPS */
- }
-
- duk__bi_normalize(x);
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-
-/* x <- y * z */
-DUK_LOCAL void duk__bi_mul_small(duk__bigint *x, duk__bigint *y, duk_uint32_t z) {
- duk__bigint tmp;
-
- DUK_ASSERT(duk__bi_is_valid(y));
-
- /* XXX: this could be optimized */
- duk__bi_set_small(&tmp, z);
- duk__bi_mul(x, y, &tmp);
-
- DUK_ASSERT(duk__bi_is_valid(x));
-}
-
-/* x <- x * y, use t as temp */
-DUK_LOCAL void duk__bi_mul_copy(duk__bigint *x, duk__bigint *y, duk__bigint *t) {
- duk__bi_mul(t, x, y);
- duk__bi_copy(x, t);
-}
-
-/* x <- x * y, use t as temp */
-DUK_LOCAL void duk__bi_mul_small_copy(duk__bigint *x, duk_uint32_t y, duk__bigint *t) {
- duk__bi_mul_small(t, x, y);
- duk__bi_copy(x, t);
-}
-
-DUK_LOCAL int duk__bi_is_even(duk__bigint *x) {
- DUK_ASSERT(duk__bi_is_valid(x));
- return (x->n == 0) || ((x->v[0] & 0x01) == 0);
-}
-
-DUK_LOCAL int duk__bi_is_zero(duk__bigint *x) {
- DUK_ASSERT(duk__bi_is_valid(x));
- return (x->n == 0); /* this is the case for normalized numbers */
-}
-
-/* Bigint is 2^52. Used to detect normalized IEEE double mantissa values
- * which are at the lowest edge (next floating point value downwards has
- * a different exponent). The lowest mantissa has the form:
- *
- * 1000........000 (52 zeroes; only "hidden bit" is set)
- */
-DUK_LOCAL duk_small_int_t duk__bi_is_2to52(duk__bigint *x) {
- DUK_ASSERT(duk__bi_is_valid(x));
- return (duk_small_int_t)
- (x->n == 2) && (x->v[0] == 0U) && (x->v[1] == (1U << (52-32)));
-}
-
-/* x <- (1<<y) */
-DUK_LOCAL void duk__bi_twoexp(duk__bigint *x, duk_small_int_t y) {
- duk_small_int_t n, r;
-
- n = (y / 32) + 1;
- DUK_ASSERT(n > 0);
- r = y % 32;
- DUK_MEMZERO((void *) x->v, sizeof(duk_uint32_t) * n);
- x->n = n;
- x->v[n - 1] = (((duk_uint32_t) 1) << r);
-}
-
-/* x <- b^y; use t1 and t2 as temps */
-DUK_LOCAL void duk__bi_exp_small(duk__bigint *x, duk_small_int_t b, duk_small_int_t y, duk__bigint *t1, duk__bigint *t2) {
- /* Fast path the binary case */
-
- DUK_ASSERT(x != t1 && x != t2 && t1 != t2); /* distinct bignums, easy mistake to make */
- DUK_ASSERT(b >= 0);
- DUK_ASSERT(y >= 0);
-
- if (b == 2) {
- duk__bi_twoexp(x, y);
- return;
- }
-
- /* http://en.wikipedia.org/wiki/Exponentiation_by_squaring */
-
- DUK_DDD(DUK_DDDPRINT("exp_small: b=%ld, y=%ld", (long) b, (long) y));
-
- duk__bi_set_small(x, 1);
- duk__bi_set_small(t1, b);
- for (;;) {
- /* Loop structure ensures that we don't compute t1^2 unnecessarily
- * on the final round, as that might create a bignum exceeding the
- * current DUK__BI_MAX_PARTS limit.
- */
- if (y & 0x01) {
- duk__bi_mul_copy(x, t1, t2);
- }
- y = y >> 1;
- if (y == 0) {
- break;
- }
- duk__bi_mul_copy(t1, t1, t2);
- }
-
- DUK__BI_PRINT("exp_small result", x);
-}
-
-/*
- * A Dragon4 number-to-string variant, based on:
- *
- * Guy L. Steele Jr., Jon L. White: "How to Print Floating-Point Numbers
- * Accurately"
- *
- * Robert G. Burger, R. Kent Dybvig: "Printing Floating-Point Numbers
- * Quickly and Accurately"
- *
- * The current algorithm is based on Figure 1 of the Burger-Dybvig paper,
- * i.e. the base implementation without logarithm estimation speedups
- * (these would increase code footprint considerably). Fixed-format output
- * does not follow the suggestions in the paper; instead, we generate an
- * extra digit and round-with-carry.
- *
- * The same algorithm is used for number parsing (with b=10 and B=2)
- * by generating one extra digit and doing rounding manually.
- *
- * See doc/number-conversion.rst for limitations.
- */
-
-/* Maximum number of digits generated. */
-#define DUK__MAX_OUTPUT_DIGITS 1040 /* (Number.MAX_VALUE).toString(2).length == 1024, + spare */
-
-/* Maximum number of characters in formatted value. */
-#define DUK__MAX_FORMATTED_LENGTH 1040 /* (-Number.MAX_VALUE).toString(2).length == 1025, + spare */
-
-/* Number and (minimum) size of bigints in the nc_ctx structure. */
-#define DUK__NUMCONV_CTX_NUM_BIGINTS 7
-#define DUK__NUMCONV_CTX_BIGINTS_SIZE (sizeof(duk__bigint) * DUK__NUMCONV_CTX_NUM_BIGINTS)
-
-typedef struct {
- /* Currently about 7*152 = 1064 bytes. The space for these
- * duk__bigints is used also as a temporary buffer for generating
- * the final string. This is a bit awkard; a union would be
- * more correct.
- */
- duk__bigint f, r, s, mp, mm, t1, t2;
-
- duk_small_int_t is_s2n; /* if 1, doing a string-to-number; else doing a number-to-string */
- duk_small_int_t is_fixed; /* if 1, doing a fixed format output (not free format) */
- duk_small_int_t req_digits; /* requested number of output digits; 0 = free-format */
- duk_small_int_t abs_pos; /* digit position is absolute, not relative */
- duk_small_int_t e; /* exponent for 'f' */
- duk_small_int_t b; /* input radix */
- duk_small_int_t B; /* output radix */
- duk_small_int_t k; /* see algorithm */
- duk_small_int_t low_ok; /* see algorithm */
- duk_small_int_t high_ok; /* see algorithm */
- duk_small_int_t unequal_gaps; /* m+ != m- (very rarely) */
-
- /* Buffer used for generated digits, values are in the range [0,B-1]. */
- duk_uint8_t digits[DUK__MAX_OUTPUT_DIGITS];
- duk_small_int_t count; /* digit count */
-} duk__numconv_stringify_ctx;
-
-/* Note: computes with 'idx' in assertions, so caller beware.
- * 'idx' is preincremented, i.e. '1' on first call, because it
- * is more convenient for the caller.
- */
-#define DUK__DRAGON4_OUTPUT_PREINC(nc_ctx,preinc_idx,x) do { \
- DUK_ASSERT((preinc_idx) - 1 >= 0); \
- DUK_ASSERT((preinc_idx) - 1 < DUK__MAX_OUTPUT_DIGITS); \
- ((nc_ctx)->digits[(preinc_idx) - 1]) = (duk_uint8_t) (x); \
- } while (0)
-
-DUK_LOCAL duk_size_t duk__dragon4_format_uint32(duk_uint8_t *buf, duk_uint32_t x, duk_small_int_t radix) {
- duk_uint8_t *p;
- duk_size_t len;
- duk_small_int_t dig;
- duk_small_int_t t;
-
- DUK_ASSERT(radix >= 2 && radix <= 36);
-
- /* A 32-bit unsigned integer formats to at most 32 digits (the
- * worst case happens with radix == 2). Output the digits backwards,
- * and use a memmove() to get them in the right place.
- */
-
- p = buf + 32;
- for (;;) {
- t = x / radix;
- dig = x - t * radix;
- x = t;
-
- DUK_ASSERT(dig >= 0 && dig < 36);
- *(--p) = DUK__DIGITCHAR(dig);
-
- if (x == 0) {
- break;
- }
- }
- len = (duk_size_t) ((buf + 32) - p);
-
- DUK_MEMMOVE((void *) buf, (const void *) p, (size_t) len);
-
- return len;
-}
-
-DUK_LOCAL void duk__dragon4_prepare(duk__numconv_stringify_ctx *nc_ctx) {
- duk_small_int_t lowest_mantissa;
-
-#if 1
- /* Assume IEEE round-to-even, so that shorter encoding can be used
- * when round-to-even would produce correct result. By removing
- * this check (and having low_ok == high_ok == 0) the results would
- * still be accurate but in some cases longer than necessary.
- */
- if (duk__bi_is_even(&nc_ctx->f)) {
- DUK_DDD(DUK_DDDPRINT("f is even"));
- nc_ctx->low_ok = 1;
- nc_ctx->high_ok = 1;
- } else {
- DUK_DDD(DUK_DDDPRINT("f is odd"));
- nc_ctx->low_ok = 0;
- nc_ctx->high_ok = 0;
- }
-#else
- /* Note: not honoring round-to-even should work but now generates incorrect
- * results. For instance, 1e23 serializes to "a000...", i.e. the first digit
- * equals the radix (10). Scaling stops one step too early in this case.
- * Don't know why this is the case, but since this code path is unused, it
- * doesn't matter.
- */
- nc_ctx->low_ok = 0;
- nc_ctx->high_ok = 0;
-#endif
-
- /* For string-to-number, pretend we never have the lowest mantissa as there
- * is no natural "precision" for inputs. Having lowest_mantissa == 0, we'll
- * fall into the base cases for both e >= 0 and e < 0.
- */
- if (nc_ctx->is_s2n) {
- lowest_mantissa = 0;
- } else {
- lowest_mantissa = duk__bi_is_2to52(&nc_ctx->f);
- }
-
- nc_ctx->unequal_gaps = 0;
- if (nc_ctx->e >= 0) {
- /* exponent non-negative (and thus not minimum exponent) */
-
- if (lowest_mantissa) {
- /* (>= e 0) AND (= f (expt b (- p 1)))
- *
- * be <- (expt b e) == b^e
- * be1 <- (* be b) == (expt b (+ e 1)) == b^(e+1)
- * r <- (* f be1 2) == 2 * f * b^(e+1) [if b==2 -> f * b^(e+2)]
- * s <- (* b 2) [if b==2 -> 4]
- * m+ <- be1 == b^(e+1)
- * m- <- be == b^e
- * k <- 0
- * B <- B
- * low_ok <- round
- * high_ok <- round
- */
-
- DUK_DDD(DUK_DDDPRINT("non-negative exponent (not smallest exponent); "
- "lowest mantissa value for this exponent -> "
- "unequal gaps"));
-
- duk__bi_exp_small(&nc_ctx->mm, nc_ctx->b, nc_ctx->e, &nc_ctx->t1, &nc_ctx->t2); /* mm <- b^e */
- duk__bi_mul_small(&nc_ctx->mp, &nc_ctx->mm, nc_ctx->b); /* mp <- b^(e+1) */
- duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, 2);
- duk__bi_mul(&nc_ctx->r, &nc_ctx->t1, &nc_ctx->mp); /* r <- (2 * f) * b^(e+1) */
- duk__bi_set_small(&nc_ctx->s, nc_ctx->b * 2); /* s <- 2 * b */
- nc_ctx->unequal_gaps = 1;
- } else {
- /* (>= e 0) AND (not (= f (expt b (- p 1))))
- *
- * be <- (expt b e) == b^e
- * r <- (* f be 2) == 2 * f * b^e [if b==2 -> f * b^(e+1)]
- * s <- 2
- * m+ <- be == b^e
- * m- <- be == b^e
- * k <- 0
- * B <- B
- * low_ok <- round
- * high_ok <- round
- */
-
- DUK_DDD(DUK_DDDPRINT("non-negative exponent (not smallest exponent); "
- "not lowest mantissa for this exponent -> "
- "equal gaps"));
-
- duk__bi_exp_small(&nc_ctx->mm, nc_ctx->b, nc_ctx->e, &nc_ctx->t1, &nc_ctx->t2); /* mm <- b^e */
- duk__bi_copy(&nc_ctx->mp, &nc_ctx->mm); /* mp <- b^e */
- duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, 2);
- duk__bi_mul(&nc_ctx->r, &nc_ctx->t1, &nc_ctx->mp); /* r <- (2 * f) * b^e */
- duk__bi_set_small(&nc_ctx->s, 2); /* s <- 2 */
- }
- } else {
- /* When doing string-to-number, lowest_mantissa is always 0 so
- * the exponent check, while incorrect, won't matter.
- */
- if (nc_ctx->e > DUK__IEEE_DOUBLE_EXP_MIN /*not minimum exponent*/ &&
- lowest_mantissa /* lowest mantissa for this exponent*/) {
- /* r <- (* f b 2) [if b==2 -> (* f 4)]
- * s <- (* (expt b (- 1 e)) 2) == b^(1-e) * 2 [if b==2 -> b^(2-e)]
- * m+ <- b == 2
- * m- <- 1
- * k <- 0
- * B <- B
- * low_ok <- round
- * high_ok <- round
- */
-
- DUK_DDD(DUK_DDDPRINT("negative exponent; not minimum exponent and "
- "lowest mantissa for this exponent -> "
- "unequal gaps"));
-
- duk__bi_mul_small(&nc_ctx->r, &nc_ctx->f, nc_ctx->b * 2); /* r <- (2 * b) * f */
- duk__bi_exp_small(&nc_ctx->t1, nc_ctx->b, 1 - nc_ctx->e, &nc_ctx->s, &nc_ctx->t2); /* NB: use 's' as temp on purpose */
- duk__bi_mul_small(&nc_ctx->s, &nc_ctx->t1, 2); /* s <- b^(1-e) * 2 */
- duk__bi_set_small(&nc_ctx->mp, 2);
- duk__bi_set_small(&nc_ctx->mm, 1);
- nc_ctx->unequal_gaps = 1;
- } else {
- /* r <- (* f 2)
- * s <- (* (expt b (- e)) 2) == b^(-e) * 2 [if b==2 -> b^(1-e)]
- * m+ <- 1
- * m- <- 1
- * k <- 0
- * B <- B
- * low_ok <- round
- * high_ok <- round
- */
-
- DUK_DDD(DUK_DDDPRINT("negative exponent; minimum exponent or not "
- "lowest mantissa for this exponent -> "
- "equal gaps"));
-
- duk__bi_mul_small(&nc_ctx->r, &nc_ctx->f, 2); /* r <- 2 * f */
- duk__bi_exp_small(&nc_ctx->t1, nc_ctx->b, -nc_ctx->e, &nc_ctx->s, &nc_ctx->t2); /* NB: use 's' as temp on purpose */
- duk__bi_mul_small(&nc_ctx->s, &nc_ctx->t1, 2); /* s <- b^(-e) * 2 */
- duk__bi_set_small(&nc_ctx->mp, 1);
- duk__bi_set_small(&nc_ctx->mm, 1);
- }
- }
-}
-
-DUK_LOCAL void duk__dragon4_scale(duk__numconv_stringify_ctx *nc_ctx) {
- duk_small_int_t k = 0;
-
- /* This is essentially the 'scale' algorithm, with recursion removed.
- * Note that 'k' is either correct immediately, or will move in one
- * direction in the loop. There's no need to do the low/high checks
- * on every round (like the Scheme algorithm does).
- *
- * The scheme algorithm finds 'k' and updates 's' simultaneously,
- * while the logical algorithm finds 'k' with 's' having its initial
- * value, after which 's' is updated separately (see the Burger-Dybvig
- * paper, Section 3.1, steps 2 and 3).
- *
- * The case where m+ == m- (almost always) is optimized for, because
- * it reduces the bigint operations considerably and almost always
- * applies. The scale loop only needs to work with m+, so this works.
- */
-
- /* XXX: this algorithm could be optimized quite a lot by using e.g.
- * a logarithm based estimator for 'k' and performing B^n multiplication
- * using a lookup table or using some bit-representation based exp
- * algorithm. Currently we just loop, with significant performance
- * impact for very large and very small numbers.
- */
-
- DUK_DDD(DUK_DDDPRINT("scale: B=%ld, low_ok=%ld, high_ok=%ld",
- (long) nc_ctx->B, (long) nc_ctx->low_ok, (long) nc_ctx->high_ok));
- DUK__BI_PRINT("r(init)", &nc_ctx->r);
- DUK__BI_PRINT("s(init)", &nc_ctx->s);
- DUK__BI_PRINT("mp(init)", &nc_ctx->mp);
- DUK__BI_PRINT("mm(init)", &nc_ctx->mm);
-
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("scale loop (inc k), k=%ld", (long) k));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("m+", &nc_ctx->mp);
- DUK__BI_PRINT("m-", &nc_ctx->mm);
-
- duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 = (+ r m+) */
- if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) >= (nc_ctx->high_ok ? 0 : 1)) {
- DUK_DDD(DUK_DDDPRINT("k is too low"));
- /* r <- r
- * s <- (* s B)
- * m+ <- m+
- * m- <- m-
- * k <- (+ k 1)
- */
-
- duk__bi_mul_small_copy(&nc_ctx->s, nc_ctx->B, &nc_ctx->t1);
- k++;
- } else {
- break;
- }
- }
-
- /* k > 0 -> k was too low, and cannot be too high */
- if (k > 0) {
- goto skip_dec_k;
- }
-
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("scale loop (dec k), k=%ld", (long) k));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("m+", &nc_ctx->mp);
- DUK__BI_PRINT("m-", &nc_ctx->mm);
-
- duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 = (+ r m+) */
- duk__bi_mul_small(&nc_ctx->t2, &nc_ctx->t1, nc_ctx->B); /* t2 = (* (+ r m+) B) */
- if (duk__bi_compare(&nc_ctx->t2, &nc_ctx->s) <= (nc_ctx->high_ok ? -1 : 0)) {
- DUK_DDD(DUK_DDDPRINT("k is too high"));
- /* r <- (* r B)
- * s <- s
- * m+ <- (* m+ B)
- * m- <- (* m- B)
- * k <- (- k 1)
- */
- duk__bi_mul_small_copy(&nc_ctx->r, nc_ctx->B, &nc_ctx->t1);
- duk__bi_mul_small_copy(&nc_ctx->mp, nc_ctx->B, &nc_ctx->t1);
- if (nc_ctx->unequal_gaps) {
- DUK_DDD(DUK_DDDPRINT("m+ != m- -> need to update m- too"));
- duk__bi_mul_small_copy(&nc_ctx->mm, nc_ctx->B, &nc_ctx->t1);
- }
- k--;
- } else {
- break;
- }
- }
-
- skip_dec_k:
-
- if (!nc_ctx->unequal_gaps) {
- DUK_DDD(DUK_DDDPRINT("equal gaps, copy m- from m+"));
- duk__bi_copy(&nc_ctx->mm, &nc_ctx->mp); /* mm <- mp */
- }
- nc_ctx->k = k;
-
- DUK_DDD(DUK_DDDPRINT("final k: %ld", (long) k));
- DUK__BI_PRINT("r(final)", &nc_ctx->r);
- DUK__BI_PRINT("s(final)", &nc_ctx->s);
- DUK__BI_PRINT("mp(final)", &nc_ctx->mp);
- DUK__BI_PRINT("mm(final)", &nc_ctx->mm);
-}
-
-DUK_LOCAL void duk__dragon4_generate(duk__numconv_stringify_ctx *nc_ctx) {
- duk_small_int_t tc1, tc2; /* terminating conditions */
- duk_small_int_t d; /* current digit */
- duk_small_int_t count = 0; /* digit count */
-
- /*
- * Digit generation loop.
- *
- * Different termination conditions:
- *
- * 1. Free format output. Terminate when shortest accurate
- * representation found.
- *
- * 2. Fixed format output, with specific number of digits.
- * Ignore termination conditions, terminate when digits
- * generated. Caller requests an extra digit and rounds.
- *
- * 3. Fixed format output, with a specific absolute cut-off
- * position (e.g. 10 digits after decimal point). Note
- * that we always generate at least one digit, even if
- * the digit is below the cut-off point already.
- */
-
- for (;;) {
- DUK_DDD(DUK_DDDPRINT("generate loop, count=%ld, k=%ld, B=%ld, low_ok=%ld, high_ok=%ld",
- (long) count, (long) nc_ctx->k, (long) nc_ctx->B,
- (long) nc_ctx->low_ok, (long) nc_ctx->high_ok));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("m+", &nc_ctx->mp);
- DUK__BI_PRINT("m-", &nc_ctx->mm);
-
- /* (quotient-remainder (* r B) s) using a dummy subtraction loop */
- duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->r, nc_ctx->B); /* t1 <- (* r B) */
- d = 0;
- for (;;) {
- if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) < 0) {
- break;
- }
- duk__bi_sub_copy(&nc_ctx->t1, &nc_ctx->s, &nc_ctx->t2); /* t1 <- t1 - s */
- d++;
- }
- duk__bi_copy(&nc_ctx->r, &nc_ctx->t1); /* r <- (remainder (* r B) s) */
- /* d <- (quotient (* r B) s) (in range 0...B-1) */
- DUK_DDD(DUK_DDDPRINT("-> d(quot)=%ld", (long) d));
- DUK__BI_PRINT("r(rem)", &nc_ctx->r);
-
- duk__bi_mul_small_copy(&nc_ctx->mp, nc_ctx->B, &nc_ctx->t2); /* m+ <- (* m+ B) */
- duk__bi_mul_small_copy(&nc_ctx->mm, nc_ctx->B, &nc_ctx->t2); /* m- <- (* m- B) */
- DUK__BI_PRINT("mp(upd)", &nc_ctx->mp);
- DUK__BI_PRINT("mm(upd)", &nc_ctx->mm);
-
- /* Terminating conditions. For fixed width output, we just ignore the
- * terminating conditions (and pretend that tc1 == tc2 == false). The
- * the current shortcut for fixed-format output is to generate a few
- * extra digits and use rounding (with carry) to finish the output.
- */
-
- if (nc_ctx->is_fixed == 0) {
- /* free-form */
- tc1 = (duk__bi_compare(&nc_ctx->r, &nc_ctx->mm) <= (nc_ctx->low_ok ? 0 : -1));
-
- duk__bi_add(&nc_ctx->t1, &nc_ctx->r, &nc_ctx->mp); /* t1 <- (+ r m+) */
- tc2 = (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) >= (nc_ctx->high_ok ? 0 : 1));
-
- DUK_DDD(DUK_DDDPRINT("tc1=%ld, tc2=%ld", (long) tc1, (long) tc2));
- } else {
- /* fixed-format */
- tc1 = 0;
- tc2 = 0;
- }
-
- /* Count is incremented before DUK__DRAGON4_OUTPUT_PREINC() call
- * on purpose, which is taken into account by the macro.
- */
- count++;
-
- if (tc1) {
- if (tc2) {
- /* tc1 = true, tc2 = true */
- duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->r, 2);
- if (duk__bi_compare(&nc_ctx->t1, &nc_ctx->s) < 0) { /* (< (* r 2) s) */
- DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=true, 2r > s: output d --> %ld (k=%ld)",
- (long) d, (long) nc_ctx->k));
- DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d);
- } else {
- DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=true, 2r <= s: output d+1 --> %ld (k=%ld)",
- (long) (d + 1), (long) nc_ctx->k));
- DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d + 1);
- }
- break;
- } else {
- /* tc1 = true, tc2 = false */
- DUK_DDD(DUK_DDDPRINT("tc1=true, tc2=false: output d --> %ld (k=%ld)",
- (long) d, (long) nc_ctx->k));
- DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d);
- break;
- }
- } else {
- if (tc2) {
- /* tc1 = false, tc2 = true */
- DUK_DDD(DUK_DDDPRINT("tc1=false, tc2=true: output d+1 --> %ld (k=%ld)",
- (long) (d + 1), (long) nc_ctx->k));
- DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d + 1);
- break;
- } else {
- /* tc1 = false, tc2 = false */
- DUK_DDD(DUK_DDDPRINT("tc1=false, tc2=false: output d --> %ld (k=%ld)",
- (long) d, (long) nc_ctx->k));
- DUK__DRAGON4_OUTPUT_PREINC(nc_ctx, count, d);
-
- /* r <- r (updated above: r <- (remainder (* r B) s)
- * s <- s
- * m+ <- m+ (updated above: m+ <- (* m+ B)
- * m- <- m- (updated above: m- <- (* m- B)
- * B, low_ok, high_ok are fixed
- */
-
- /* fall through and continue for-loop */
- }
- }
-
- /* fixed-format termination conditions */
- if (nc_ctx->is_fixed) {
- if (nc_ctx->abs_pos) {
- int pos = nc_ctx->k - count + 1; /* count is already incremented, take into account */
- DUK_DDD(DUK_DDDPRINT("fixed format, absolute: abs pos=%ld, k=%ld, count=%ld, req=%ld",
- (long) pos, (long) nc_ctx->k, (long) count, (long) nc_ctx->req_digits));
- if (pos <= nc_ctx->req_digits) {
- DUK_DDD(DUK_DDDPRINT("digit position reached req_digits, end generate loop"));
- break;
- }
- } else {
- DUK_DDD(DUK_DDDPRINT("fixed format, relative: k=%ld, count=%ld, req=%ld",
- (long) nc_ctx->k, (long) count, (long) nc_ctx->req_digits));
- if (count >= nc_ctx->req_digits) {
- DUK_DDD(DUK_DDDPRINT("digit count reached req_digits, end generate loop"));
- break;
- }
- }
- }
- } /* for */
-
- nc_ctx->count = count;
-
- DUK_DDD(DUK_DDDPRINT("generate finished"));
-
-#ifdef DUK_USE_DDDPRINT
- {
- duk_uint8_t buf[2048];
- duk_small_int_t i, t;
- DUK_MEMZERO(buf, sizeof(buf));
- for (i = 0; i < nc_ctx->count; i++) {
- t = nc_ctx->digits[i];
- if (t < 0 || t > 36) {
- buf[i] = (duk_uint8_t) '?';
- } else {
- buf[i] = (duk_uint8_t) DUK__DIGITCHAR(t);
- }
- }
- DUK_DDD(DUK_DDDPRINT("-> generated digits; k=%ld, digits='%s'",
- (long) nc_ctx->k, (const char *) buf));
- }
-#endif
-}
-
-/* Round up digits to a given position. If position is out-of-bounds,
- * does nothing. If carry propagates over the first digit, a '1' is
- * prepended to digits and 'k' will be updated. Return value indicates
- * whether carry propagated over the first digit.
- *
- * Note that nc_ctx->count is NOT updated based on the rounding position
- * (it is updated only if carry overflows over the first digit and an
- * extra digit is prepended).
- */
-DUK_LOCAL duk_small_int_t duk__dragon4_fixed_format_round(duk__numconv_stringify_ctx *nc_ctx, duk_small_int_t round_idx) {
- duk_small_int_t t;
- duk_uint8_t *p;
- duk_uint8_t roundup_limit;
- duk_small_int_t ret = 0;
-
- /*
- * round_idx points to the digit which is considered for rounding; the
- * digit to its left is the final digit of the rounded value. If round_idx
- * is zero, rounding will be performed; the result will either be an empty
- * rounded value or if carry happens a '1' digit is generated.
- */
-
- if (round_idx >= nc_ctx->count) {
- DUK_DDD(DUK_DDDPRINT("round_idx out of bounds (%ld >= %ld (count)) -> no rounding",
- (long) round_idx, (long) nc_ctx->count));
- return 0;
- } else if (round_idx < 0) {
- DUK_DDD(DUK_DDDPRINT("round_idx out of bounds (%ld < 0) -> no rounding",
- (long) round_idx));
- return 0;
- }
-
- /*
- * Round-up limit.
- *
- * For even values, divides evenly, e.g. 10 -> roundup_limit=5.
- *
- * For odd values, rounds up, e.g. 3 -> roundup_limit=2.
- * If radix is 3, 0/3 -> down, 1/3 -> down, 2/3 -> up.
- */
- roundup_limit = (duk_uint8_t) ((nc_ctx->B + 1) / 2);
-
- p = &nc_ctx->digits[round_idx];
- if (*p >= roundup_limit) {
- DUK_DDD(DUK_DDDPRINT("fixed-format rounding carry required"));
- /* carry */
- for (;;) {
- *p = 0;
- if (p == &nc_ctx->digits[0]) {
- DUK_DDD(DUK_DDDPRINT("carry propagated to first digit -> special case handling"));
- DUK_MEMMOVE((void *) (&nc_ctx->digits[1]),
- (const void *) (&nc_ctx->digits[0]),
- (size_t) (sizeof(char) * nc_ctx->count));
- nc_ctx->digits[0] = 1; /* don't increase 'count' */
- nc_ctx->k++; /* position of highest digit changed */
- nc_ctx->count++; /* number of digits changed */
- ret = 1;
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("fixed-format rounding carry: B=%ld, roundup_limit=%ld, p=%p, digits=%p",
- (long) nc_ctx->B, (long) roundup_limit, (void *) p, (void *) nc_ctx->digits));
- p--;
- t = *p;
- DUK_DDD(DUK_DDDPRINT("digit before carry: %ld", (long) t));
- if (++t < nc_ctx->B) {
- DUK_DDD(DUK_DDDPRINT("rounding carry terminated"));
- *p = (duk_uint8_t) t;
- break;
- }
-
- DUK_DDD(DUK_DDDPRINT("wraps, carry to next digit"));
- }
- }
-
- return ret;
-}
-
-#define DUK__NO_EXP (65536) /* arbitrary marker, outside valid exp range */
-
-DUK_LOCAL void duk__dragon4_convert_and_push(duk__numconv_stringify_ctx *nc_ctx,
- duk_context *ctx,
- duk_small_int_t radix,
- duk_small_int_t digits,
- duk_small_uint_t flags,
- duk_small_int_t neg) {
- duk_small_int_t k;
- duk_small_int_t pos, pos_end;
- duk_small_int_t expt;
- duk_small_int_t dig;
- duk_uint8_t *q;
- duk_uint8_t *buf;
-
- /*
- * The string conversion here incorporates all the necessary Ecmascript
- * semantics without attempting to be generic. nc_ctx->digits contains
- * nc_ctx->count digits (>= 1), with the topmost digit's 'position'
- * indicated by nc_ctx->k as follows:
- *
- * digits="123" count=3 k=0 --> 0.123
- * digits="123" count=3 k=1 --> 1.23
- * digits="123" count=3 k=5 --> 12300
- * digits="123" count=3 k=-1 --> 0.0123
- *
- * Note that the identifier names used for format selection are different
- * in Burger-Dybvig paper and Ecmascript specification (quite confusingly
- * so, because e.g. 'k' has a totally different meaning in each). See
- * documentation for discussion.
- *
- * Ecmascript doesn't specify any specific behavior for format selection
- * (e.g. when to use exponent notation) for non-base-10 numbers.
- *
- * The bigint space in the context is reused for string output, as there
- * is more than enough space for that (>1kB at the moment), and we avoid
- * allocating even more stack.
- */
-
- DUK_ASSERT(DUK__NUMCONV_CTX_BIGINTS_SIZE >= DUK__MAX_FORMATTED_LENGTH);
- DUK_ASSERT(nc_ctx->count >= 1);
-
- k = nc_ctx->k;
- buf = (duk_uint8_t *) &nc_ctx->f; /* XXX: union would be more correct */
- q = buf;
-
- /* Exponent handling: if exponent format is used, record exponent value and
- * fake k such that one leading digit is generated (e.g. digits=123 -> "1.23").
- *
- * toFixed() prevents exponent use; otherwise apply a set of criteria to
- * match the other API calls (toString(), toPrecision, etc).
- */
-
- expt = DUK__NO_EXP;
- if (!nc_ctx->abs_pos /* toFixed() */) {
- if ((flags & DUK_N2S_FLAG_FORCE_EXP) || /* exponential notation forced */
- ((flags & DUK_N2S_FLAG_NO_ZERO_PAD) && /* fixed precision and zero padding would be required */
- (k - digits >= 1)) || /* (e.g. k=3, digits=2 -> "12X") */
- ((k > 21 || k <= -6) && (radix == 10))) { /* toString() conditions */
- DUK_DDD(DUK_DDDPRINT("use exponential notation: k=%ld -> expt=%ld",
- (long) k, (long) (k - 1)));
- expt = k - 1; /* e.g. 12.3 -> digits="123" k=2 -> 1.23e1 */
- k = 1; /* generate mantissa with a single leading whole number digit */
- }
- }
-
- if (neg) {
- *q++ = '-';
- }
-
- /* Start position (inclusive) and end position (exclusive) */
- pos = (k >= 1 ? k : 1);
- if (nc_ctx->is_fixed) {
- if (nc_ctx->abs_pos) {
- /* toFixed() */
- pos_end = -digits;
- } else {
- pos_end = k - digits;
- }
- } else {
- pos_end = k - nc_ctx->count;
- }
- if (pos_end > 0) {
- pos_end = 0;
- }
-
- DUK_DDD(DUK_DDDPRINT("expt=%ld, k=%ld, count=%ld, pos=%ld, pos_end=%ld, is_fixed=%ld, "
- "digits=%ld, abs_pos=%ld",
- (long) expt, (long) k, (long) nc_ctx->count, (long) pos, (long) pos_end,
- (long) nc_ctx->is_fixed, (long) digits, (long) nc_ctx->abs_pos));
-
- /* Digit generation */
- while (pos > pos_end) {
- DUK_DDD(DUK_DDDPRINT("digit generation: pos=%ld, pos_end=%ld",
- (long) pos, (long) pos_end));
- if (pos == 0) {
- *q++ = (duk_uint8_t) '.';
- }
- if (pos > k) {
- *q++ = (duk_uint8_t) '0';
- } else if (pos <= k - nc_ctx->count) {
- *q++ = (duk_uint8_t) '0';
- } else {
- dig = nc_ctx->digits[k - pos];
- DUK_ASSERT(dig >= 0 && dig < nc_ctx->B);
- *q++ = (duk_uint8_t) DUK__DIGITCHAR(dig);
- }
-
- pos--;
- }
- DUK_ASSERT(pos <= 1);
-
- /* Exponent */
- if (expt != DUK__NO_EXP) {
- /*
- * Exponent notation for non-base-10 numbers isn't specified in Ecmascript
- * specification, as it never explicitly turns up: non-decimal numbers can
- * only be formatted with Number.prototype.toString([radix]) and for that,
- * behavior is not explicitly specified.
- *
- * Logical choices include formatting the exponent as decimal (e.g. binary
- * 100000 as 1e+5) or in current radix (e.g. binary 100000 as 1e+101).
- * The Dragon4 algorithm (in the original paper) prints the exponent value
- * in the target radix B. However, for radix values 15 and above, the
- * exponent separator 'e' is no longer easily parseable. Consider, for
- * instance, the number "1.faecee+1c".
- */
-
- duk_size_t len;
- char expt_sign;
-
- *q++ = 'e';
- if (expt >= 0) {
- expt_sign = '+';
- } else {
- expt_sign = '-';
- expt = -expt;
- }
- *q++ = (duk_uint8_t) expt_sign;
- len = duk__dragon4_format_uint32(q, (duk_uint32_t) expt, radix);
- q += len;
- }
-
- duk_push_lstring(ctx, (const char *) buf, (size_t) (q - buf));
-}
-
-/*
- * Conversion helpers
- */
-
-DUK_LOCAL void duk__dragon4_double_to_ctx(duk__numconv_stringify_ctx *nc_ctx, duk_double_t x) {
- duk_double_union u;
- duk_uint32_t tmp;
- duk_small_int_t expt;
-
- /*
- * seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
- * A B C D E F G H
- *
- * s sign bit
- * eee... exponent field
- * fff... fraction
- *
- * ieee value = 1.ffff... * 2^(e - 1023) (normal)
- * = 0.ffff... * 2^(-1022) (denormal)
- *
- * algorithm v = f * b^e
- */
-
- DUK_DBLUNION_SET_DOUBLE(&u, x);
-
- nc_ctx->f.n = 2;
-
- tmp = DUK_DBLUNION_GET_LOW32(&u);
- nc_ctx->f.v[0] = tmp;
- tmp = DUK_DBLUNION_GET_HIGH32(&u);
- nc_ctx->f.v[1] = tmp & 0x000fffffUL;
- expt = (duk_small_int_t) ((tmp >> 20) & 0x07ffUL);
-
- if (expt == 0) {
- /* denormal */
- expt = DUK__IEEE_DOUBLE_EXP_MIN - 52;
- duk__bi_normalize(&nc_ctx->f);
- } else {
- /* normal: implicit leading 1-bit */
- nc_ctx->f.v[1] |= 0x00100000UL;
- expt = expt - DUK__IEEE_DOUBLE_EXP_BIAS - 52;
- DUK_ASSERT(duk__bi_is_valid(&nc_ctx->f)); /* true, because v[1] has at least one bit set */
- }
-
- DUK_ASSERT(duk__bi_is_valid(&nc_ctx->f));
-
- nc_ctx->e = expt;
-}
-
-DUK_LOCAL void duk__dragon4_ctx_to_double(duk__numconv_stringify_ctx *nc_ctx, duk_double_t *x) {
- duk_double_union u;
- duk_small_int_t expt;
- duk_small_int_t i;
- duk_small_int_t bitstart;
- duk_small_int_t bitround;
- duk_small_int_t bitidx;
- duk_small_int_t skip_round;
- duk_uint32_t t, v;
-
- DUK_ASSERT(nc_ctx->count == 53 + 1);
-
- /* Sometimes this assert is not true right now; it will be true after
- * rounding. See: test-bug-numconv-mantissa-assert.js.
- */
- DUK_ASSERT_DISABLE(nc_ctx->digits[0] == 1); /* zero handled by caller */
-
- /* Should not be required because the code below always sets both high
- * and low parts, but at least gcc-4.4.5 fails to deduce this correctly
- * (perhaps because the low part is set (seemingly) conditionally in a
- * loop), so this is here to avoid the bogus warning.
- */
- DUK_MEMZERO((void *) &u, sizeof(u));
-
- /*
- * Figure out how generated digits match up with the mantissa,
- * and then perform rounding. If mantissa overflows, need to
- * recompute the exponent (it is bumped and may overflow to
- * infinity).
- *
- * For normal numbers the leading '1' is hidden and ignored,
- * and the last bit is used for rounding:
- *
- * rounding pt
- * <--------52------->|
- * 1 x x x x ... x x x x|y ==> x x x x ... x x x x
- *
- * For denormals, the leading '1' is included in the number,
- * and the rounding point is different:
- *
- * rounding pt
- * <--52 or less--->|
- * 1 x x x x ... x x|x x y ==> 0 0 ... 1 x x ... x x
- *
- * The largest denormals will have a mantissa beginning with
- * a '1' (the explicit leading bit); smaller denormals will
- * have leading zero bits.
- *
- * If the exponent would become too high, the result becomes
- * Infinity. If the exponent is so small that the entire
- * mantissa becomes zero, the result becomes zero.
- *
- * Note: the Dragon4 'k' is off-by-one with respect to the IEEE
- * exponent. For instance, k==0 indicates that the leading '1'
- * digit is at the first binary fraction position (0.1xxx...);
- * the corresponding IEEE exponent would be -1.
- */
-
- skip_round = 0;
-
- recheck_exp:
-
- expt = nc_ctx->k - 1; /* IEEE exp without bias */
- if (expt > 1023) {
- /* Infinity */
- bitstart = -255; /* needed for inf: causes mantissa to become zero,
- * and rounding to be skipped.
- */
- expt = 2047;
- } else if (expt >= -1022) {
- /* normal */
- bitstart = 1; /* skip leading digit */
- expt += DUK__IEEE_DOUBLE_EXP_BIAS;
- DUK_ASSERT(expt >= 1 && expt <= 2046);
- } else {
- /* denormal or zero */
- bitstart = 1023 + expt; /* expt==-1023 -> bitstart=0 (leading 1);
- * expt==-1024 -> bitstart=-1 (one left of leading 1), etc
- */
- expt = 0;
- }
- bitround = bitstart + 52;
-
- DUK_DDD(DUK_DDDPRINT("ieee expt=%ld, bitstart=%ld, bitround=%ld",
- (long) expt, (long) bitstart, (long) bitround));
-
- if (!skip_round) {
- if (duk__dragon4_fixed_format_round(nc_ctx, bitround)) {
- /* Corner case: see test-numconv-parse-mant-carry.js. We could
- * just bump the exponent and update bitstart, but it's more robust
- * to recompute (but avoid rounding twice).
- */
- DUK_DDD(DUK_DDDPRINT("rounding caused exponent to be bumped, recheck exponent"));
- skip_round = 1;
- goto recheck_exp;
- }
- }
-
- /*
- * Create mantissa
- */
-
- t = 0;
- for (i = 0; i < 52; i++) {
- bitidx = bitstart + 52 - 1 - i;
- if (bitidx >= nc_ctx->count) {
- v = 0;
- } else if (bitidx < 0) {
- v = 0;
- } else {
- v = nc_ctx->digits[bitidx];
- }
- DUK_ASSERT(v == 0 || v == 1);
- t += v << (i % 32);
- if (i == 31) {
- /* low 32 bits is complete */
- DUK_DBLUNION_SET_LOW32(&u, t);
- t = 0;
- }
- }
- /* t has high mantissa */
-
- DUK_DDD(DUK_DDDPRINT("mantissa is complete: %08lx %08lx",
- (unsigned long) t,
- (unsigned long) DUK_DBLUNION_GET_LOW32(&u)));
-
- DUK_ASSERT(expt >= 0 && expt <= 0x7ffL);
- t += expt << 20;
-#if 0 /* caller handles sign change */
- if (negative) {
- t |= 0x80000000U;
- }
-#endif
- DUK_DBLUNION_SET_HIGH32(&u, t);
-
- DUK_DDD(DUK_DDDPRINT("number is complete: %08lx %08lx",
- (unsigned long) DUK_DBLUNION_GET_HIGH32(&u),
- (unsigned long) DUK_DBLUNION_GET_LOW32(&u)));
-
- *x = DUK_DBLUNION_GET_DOUBLE(&u);
-}
-
-/*
- * Exposed number-to-string API
- *
- * Input: [ number ]
- * Output: [ string ]
- */
-
-DUK_INTERNAL void duk_numconv_stringify(duk_context *ctx, duk_small_int_t radix, duk_small_int_t digits, duk_small_uint_t flags) {
- duk_double_t x;
- duk_small_int_t c;
- duk_small_int_t neg;
- duk_uint32_t uval;
- duk__numconv_stringify_ctx nc_ctx_alloc; /* large context; around 2kB now */
- duk__numconv_stringify_ctx *nc_ctx = &nc_ctx_alloc;
-
- x = (duk_double_t) duk_require_number(ctx, -1);
- duk_pop(ctx);
-
- /*
- * Handle special cases (NaN, infinity, zero).
- */
-
- c = (duk_small_int_t) DUK_FPCLASSIFY(x);
- if (DUK_SIGNBIT((double) x)) {
- x = -x;
- neg = 1;
- } else {
- neg = 0;
- }
-
- /* NaN sign bit is platform specific with unpacked, un-normalized NaNs */
- DUK_ASSERT(c == DUK_FP_NAN || DUK_SIGNBIT((double) x) == 0);
-
- if (c == DUK_FP_NAN) {
- duk_push_hstring_stridx(ctx, DUK_STRIDX_NAN);
- return;
- } else if (c == DUK_FP_INFINITE) {
- if (neg) {
- /* -Infinity */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_MINUS_INFINITY);
- } else {
- /* Infinity */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_INFINITY);
- }
- return;
- } else if (c == DUK_FP_ZERO) {
- /* We can't shortcut zero here if it goes through special formatting
- * (such as forced exponential notation).
- */
- ;
- }
-
- /*
- * Handle integers in 32-bit range (that is, [-(2**32-1),2**32-1])
- * specially, as they're very likely for embedded programs. This
- * is now done for all radix values. We must be careful not to use
- * the fast path when special formatting (e.g. forced exponential)
- * is in force.
- *
- * XXX: could save space by supporting radix 10 only and using
- * sprintf "%lu" for the fast path and for exponent formatting.
- */
-
- uval = (unsigned int) x;
- if (((double) uval) == x && /* integer number in range */
- flags == 0) { /* no special formatting */
- /* use bigint area as a temp */
- duk_uint8_t *buf = (duk_uint8_t *) (&nc_ctx->f);
- duk_uint8_t *p = buf;
-
- DUK_ASSERT(DUK__NUMCONV_CTX_BIGINTS_SIZE >= 32 + 1); /* max size: radix=2 + sign */
- if (neg && uval != 0) {
- /* no negative sign for zero */
- *p++ = (duk_uint8_t) '-';
- }
- p += duk__dragon4_format_uint32(p, uval, radix);
- duk_push_lstring(ctx, (const char *) buf, (duk_size_t) (p - buf));
- return;
- }
-
- /*
- * Dragon4 setup.
- *
- * Convert double from IEEE representation for conversion;
- * normal finite values have an implicit leading 1-bit. The
- * slow path algorithm doesn't handle zero, so zero is special
- * cased here but still creates a valid nc_ctx, and goes
- * through normal formatting in case special formatting has
- * been requested (e.g. forced exponential format: 0 -> "0e+0").
- */
-
- /* Would be nice to bulk clear the allocation, but the context
- * is 1-2 kilobytes and nothing should rely on it being zeroed.
- */
-#if 0
- DUK_MEMZERO((void *) nc_ctx, sizeof(*nc_ctx)); /* slow init, do only for slow path cases */
-#endif
-
- nc_ctx->is_s2n = 0;
- nc_ctx->b = 2;
- nc_ctx->B = radix;
- nc_ctx->abs_pos = 0;
- if (flags & DUK_N2S_FLAG_FIXED_FORMAT) {
- nc_ctx->is_fixed = 1;
- if (flags & DUK_N2S_FLAG_FRACTION_DIGITS) {
- /* absolute req_digits; e.g. digits = 1 -> last digit is 0,
- * but add an extra digit for rounding.
- */
- nc_ctx->abs_pos = 1;
- nc_ctx->req_digits = (-digits + 1) - 1;
- } else {
- nc_ctx->req_digits = digits + 1;
- }
- } else {
- nc_ctx->is_fixed = 0;
- nc_ctx->req_digits = 0;
- }
-
- if (c == DUK_FP_ZERO) {
- /* Zero special case: fake requested number of zero digits; ensure
- * no sign bit is printed. Relative and absolute fixed format
- * require separate handling.
- */
- duk_small_int_t count;
- if (nc_ctx->is_fixed) {
- if (nc_ctx->abs_pos) {
- count = digits + 2; /* lead zero + 'digits' fractions + 1 for rounding */
- } else {
- count = digits + 1; /* + 1 for rounding */
- }
- } else {
- count = 1;
- }
- DUK_DDD(DUK_DDDPRINT("count=%ld", (long) count));
- DUK_ASSERT(count >= 1);
- DUK_MEMZERO((void *) nc_ctx->digits, count);
- nc_ctx->count = count;
- nc_ctx->k = 1; /* 0.000... */
- neg = 0;
- goto zero_skip;
- }
-
- duk__dragon4_double_to_ctx(nc_ctx, x); /* -> sets 'f' and 'e' */
- DUK__BI_PRINT("f", &nc_ctx->f);
- DUK_DDD(DUK_DDDPRINT("e=%ld", (long) nc_ctx->e));
-
- /*
- * Dragon4 slow path digit generation.
- */
-
- duk__dragon4_prepare(nc_ctx); /* setup many variables in nc_ctx */
-
- DUK_DDD(DUK_DDDPRINT("after prepare:"));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("mp", &nc_ctx->mp);
- DUK__BI_PRINT("mm", &nc_ctx->mm);
-
- duk__dragon4_scale(nc_ctx);
-
- DUK_DDD(DUK_DDDPRINT("after scale; k=%ld", (long) nc_ctx->k));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("mp", &nc_ctx->mp);
- DUK__BI_PRINT("mm", &nc_ctx->mm);
-
- duk__dragon4_generate(nc_ctx);
-
- /*
- * Convert and push final string.
- */
-
- zero_skip:
-
- if (flags & DUK_N2S_FLAG_FIXED_FORMAT) {
- /* Perform fixed-format rounding. */
- duk_small_int_t roundpos;
- if (flags & DUK_N2S_FLAG_FRACTION_DIGITS) {
- /* 'roundpos' is relative to nc_ctx->k and increases to the right
- * (opposite of how 'k' changes).
- */
- roundpos = -digits; /* absolute position for digit considered for rounding */
- roundpos = nc_ctx->k - roundpos;
- } else {
- roundpos = digits;
- }
- DUK_DDD(DUK_DDDPRINT("rounding: k=%ld, count=%ld, digits=%ld, roundpos=%ld",
- (long) nc_ctx->k, (long) nc_ctx->count, (long) digits, (long) roundpos));
- (void) duk__dragon4_fixed_format_round(nc_ctx, roundpos);
-
- /* Note: 'count' is currently not adjusted by rounding (i.e. the
- * digits are not "chopped off". That shouldn't matter because
- * the digit position (absolute or relative) is passed on to the
- * convert-and-push function.
- */
- }
-
- duk__dragon4_convert_and_push(nc_ctx, ctx, radix, digits, flags, neg);
-}
-
-/*
- * Exposed string-to-number API
- *
- * Input: [ string ]
- * Output: [ number ]
- *
- * If number parsing fails, a NaN is pushed as the result. If number parsing
- * fails due to an internal error, an InternalError is thrown.
- */
-
-DUK_INTERNAL void duk_numconv_parse(duk_context *ctx, duk_small_int_t radix, duk_small_uint_t flags) {
- duk_hthread *thr = (duk_hthread *) ctx;
- duk__numconv_stringify_ctx nc_ctx_alloc; /* large context; around 2kB now */
- duk__numconv_stringify_ctx *nc_ctx = &nc_ctx_alloc;
- duk_double_t res;
- duk_hstring *h_str;
- duk_small_int_t expt;
- duk_small_int_t expt_neg;
- duk_small_int_t expt_adj;
- duk_small_int_t neg;
- duk_small_int_t dig;
- duk_small_int_t dig_whole;
- duk_small_int_t dig_lzero;
- duk_small_int_t dig_frac;
- duk_small_int_t dig_expt;
- duk_small_int_t dig_prec;
- const duk__exp_limits *explim;
- const duk_uint8_t *p;
- duk_small_int_t ch;
-
- /* This seems to waste a lot of stack frame entries, but good compilers
- * will compute these as needed below. Some of these initial flags are
- * also modified in the code below, so they can't all be removed.
- */
- duk_small_int_t trim_white = (flags & DUK_S2N_FLAG_TRIM_WHITE);
- duk_small_int_t allow_expt = (flags & DUK_S2N_FLAG_ALLOW_EXP);
- duk_small_int_t allow_garbage = (flags & DUK_S2N_FLAG_ALLOW_GARBAGE);
- duk_small_int_t allow_plus = (flags & DUK_S2N_FLAG_ALLOW_PLUS);
- duk_small_int_t allow_minus = (flags & DUK_S2N_FLAG_ALLOW_MINUS);
- duk_small_int_t allow_infinity = (flags & DUK_S2N_FLAG_ALLOW_INF);
- duk_small_int_t allow_frac = (flags & DUK_S2N_FLAG_ALLOW_FRAC);
- duk_small_int_t allow_naked_frac = (flags & DUK_S2N_FLAG_ALLOW_NAKED_FRAC);
- duk_small_int_t allow_empty_frac = (flags & DUK_S2N_FLAG_ALLOW_EMPTY_FRAC);
- duk_small_int_t allow_empty = (flags & DUK_S2N_FLAG_ALLOW_EMPTY_AS_ZERO);
- duk_small_int_t allow_leading_zero = (flags & DUK_S2N_FLAG_ALLOW_LEADING_ZERO);
- duk_small_int_t allow_auto_hex_int = (flags & DUK_S2N_FLAG_ALLOW_AUTO_HEX_INT);
- duk_small_int_t allow_auto_oct_int = (flags & DUK_S2N_FLAG_ALLOW_AUTO_OCT_INT);
-
- DUK_DDD(DUK_DDDPRINT("parse number: %!T, radix=%ld, flags=0x%08lx",
- (duk_tval *) duk_get_tval(ctx, -1),
- (long) radix, (unsigned long) flags));
-
- DUK_ASSERT(radix >= 2 && radix <= 36);
- DUK_ASSERT(radix - 2 < (duk_small_int_t) sizeof(duk__str2num_digits_for_radix));
-
- /*
- * Preliminaries: trim, sign, Infinity check
- *
- * We rely on the interned string having a NUL terminator, which will
- * cause a parse failure wherever it is encountered. As a result, we
- * don't need separate pointer checks.
- *
- * There is no special parsing for 'NaN' in the specification although
- * 'Infinity' (with an optional sign) is allowed in some contexts.
- * Some contexts allow plus/minus sign, while others only allow the
- * minus sign (like JSON.parse()).
- *
- * Automatic hex number detection (leading '0x' or '0X') and octal
- * number detection (leading '0' followed by at least one octal digit)
- * is done here too.
- */
-
- if (trim_white) {
- /* Leading / trailing whitespace is sometimes accepted and
- * sometimes not. After white space trimming, all valid input
- * characters are pure ASCII.
- */
- duk_trim(ctx, -1);
- }
- h_str = duk_require_hstring(ctx, -1);
- DUK_ASSERT(h_str != NULL);
- p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_str);
-
- neg = 0;
- ch = *p;
- if (ch == (duk_small_int_t) '+') {
- if (!allow_plus) {
- DUK_DDD(DUK_DDDPRINT("parse failed: leading plus sign not allowed"));
- goto parse_fail;
- }
- p++;
- } else if (ch == (duk_small_int_t) '-') {
- if (!allow_minus) {
- DUK_DDD(DUK_DDDPRINT("parse failed: leading minus sign not allowed"));
- goto parse_fail;
- }
- p++;
- neg = 1;
- }
-
- ch = *p;
- if (allow_infinity && ch == (duk_small_int_t) 'I') {
- /* Don't check for Infinity unless the context allows it.
- * 'Infinity' is a valid integer literal in e.g. base-36:
- *
- * parseInt('Infinity', 36)
- * 1461559270678
- */
-
- const duk_uint8_t *q;
-
- /* borrow literal Infinity from builtin string */
- q = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(DUK_HTHREAD_STRING_INFINITY(thr));
- if (DUK_STRNCMP((const char *) p, (const char *) q, 8) == 0) {
- if (!allow_garbage && (p[8] != (duk_uint8_t) 0)) {
- DUK_DDD(DUK_DDDPRINT("parse failed: trailing garbage after matching 'Infinity' not allowed"));
- goto parse_fail;
- } else {
- res = DUK_DOUBLE_INFINITY;
- goto negcheck_and_ret;
- }
- }
- }
- if (ch == (duk_small_int_t) '0') {
- duk_small_int_t detect_radix = 0;
- ch = p[1];
- if (allow_auto_hex_int && (ch == (duk_small_int_t) 'x' || ch == (duk_small_int_t) 'X')) {
- DUK_DDD(DUK_DDDPRINT("detected 0x/0X hex prefix, changing radix and preventing fractions and exponent"));
- detect_radix = 16;
- allow_empty = 0; /* interpret e.g. '0x' and '0xg' as a NaN (= parse error) */
- p += 2;
- } else if (allow_auto_oct_int && (ch >= (duk_small_int_t) '0' && ch <= (duk_small_int_t) '9')) {
- DUK_DDD(DUK_DDDPRINT("detected 0n oct prefix, changing radix and preventing fractions and exponent"));
- detect_radix = 8;
- allow_empty = 1; /* interpret e.g. '09' as '0', not NaN */
- p += 1;
- }
- if (detect_radix > 0) {
- radix = detect_radix;
- allow_expt = 0;
- allow_frac = 0;
- allow_naked_frac = 0;
- allow_empty_frac = 0;
- allow_leading_zero = 1; /* allow e.g. '0x0009' and '00077' */
- }
- }
-
- /*
- * Scan number and setup for Dragon4.
- *
- * The fast path case is detected during setup: an integer which
- * can be converted without rounding, no net exponent. The fast
- * path could be implemented as a separate scan, but may not really
- * be worth it: the multiplications for building 'f' are not
- * expensive when 'f' is small.
- *
- * The significand ('f') must contain enough bits of (apparent)
- * accuracy, so that Dragon4 will generate enough binary output digits.
- * For decimal numbers, this means generating a 20-digit significand,
- * which should yield enough practical accuracy to parse IEEE doubles.
- * In fact, the Ecmascript specification explicitly allows an
- * implementation to treat digits beyond 20 as zeroes (and even
- * to round the 20th digit upwards). For non-decimal numbers, the
- * appropriate number of digits has been precomputed for comparable
- * accuracy.
- *
- * Digit counts:
- *
- * [ dig_lzero ]
- * |
- * .+-..---[ dig_prec ]----.
- * | || |
- * 0000123.456789012345678901234567890e+123456
- * | | | | | |
- * `--+--' `------[ dig_frac ]-------' `-+--'
- * | |
- * [ dig_whole ] [ dig_expt ]
- *
- * dig_frac and dig_expt are -1 if not present
- * dig_lzero is only computed for whole number part
- *
- * Parsing state
- *
- * Parsing whole part dig_frac < 0 AND dig_expt < 0
- * Parsing fraction part dig_frac >= 0 AND dig_expt < 0
- * Parsing exponent part dig_expt >= 0 (dig_frac may be < 0 or >= 0)
- *
- * Note: in case we hit an implementation limit (like exponent range),
- * we should throw an error, NOT return NaN or Infinity. Even with
- * very large exponent (or significand) values the final result may be
- * finite, so NaN/Infinity would be incorrect.
- */
-
- duk__bi_set_small(&nc_ctx->f, 0);
- dig_prec = 0;
- dig_lzero = 0;
- dig_whole = 0;
- dig_frac = -1;
- dig_expt = -1;
- expt = 0;
- expt_adj = 0; /* essentially tracks digit position of lowest 'f' digit */
- expt_neg = 0;
- for (;;) {
- ch = *p++;
-
- DUK_DDD(DUK_DDDPRINT("parse digits: p=%p, ch='%c' (%ld), expt=%ld, expt_adj=%ld, "
- "dig_whole=%ld, dig_frac=%ld, dig_expt=%ld, dig_lzero=%ld, dig_prec=%ld",
- (const void *) p, (int) ((ch >= 0x20 && ch <= 0x7e) ? ch : '?'), (long) ch,
- (long) expt, (long) expt_adj, (long) dig_whole, (long) dig_frac,
- (long) dig_expt, (long) dig_lzero, (long) dig_prec));
- DUK__BI_PRINT("f", &nc_ctx->f);
-
- /* Most common cases first. */
- if (ch >= (duk_small_int_t) '0' && ch <= (duk_small_int_t) '9') {
- dig = (int) ch - '0' + 0;
- } else if (ch == (duk_small_int_t) '.') {
- /* A leading digit is not required in some cases, e.g. accept ".123".
- * In other cases (JSON.parse()) a leading digit is required. This
- * is checked for after the loop.
- */
- if (dig_frac >= 0 || dig_expt >= 0) {
- if (allow_garbage) {
- DUK_DDD(DUK_DDDPRINT("garbage termination (invalid period)"));
- break;
- } else {
- DUK_DDD(DUK_DDDPRINT("parse failed: period not allowed"));
- goto parse_fail;
- }
- }
-
- if (!allow_frac) {
- /* Some contexts don't allow fractions at all; this can't be a
- * post-check because the state ('f' and expt) would be incorrect.
- */
- if (allow_garbage) {
- DUK_DDD(DUK_DDDPRINT("garbage termination (invalid first period)"));
- break;
- } else {
- DUK_DDD(DUK_DDDPRINT("parse failed: fraction part not allowed"));
- }
- }
-
- DUK_DDD(DUK_DDDPRINT("start fraction part"));
- dig_frac = 0;
- continue;
- } else if (ch == (duk_small_int_t) 0) {
- DUK_DDD(DUK_DDDPRINT("NUL termination"));
- break;
- } else if (allow_expt && dig_expt < 0 && (ch == (duk_small_int_t) 'e' || ch == (duk_small_int_t) 'E')) {
- /* Note: we don't parse back exponent notation for anything else
- * than radix 10, so this is not an ambiguous check (e.g. hex
- * exponent values may have 'e' either as a significand digit
- * or as an exponent separator).
- *
- * If the exponent separator occurs twice, 'e' will be interpreted
- * as a digit (= 14) and will be rejected as an invalid decimal
- * digit.
- */
-
- DUK_DDD(DUK_DDDPRINT("start exponent part"));
-
- /* Exponent without a sign or with a +/- sign is accepted
- * by all call sites (even JSON.parse()).
- */
- ch = *p;
- if (ch == (duk_small_int_t) '-') {
- expt_neg = 1;
- p++;
- } else if (ch == (duk_small_int_t) '+') {
- p++;
- }
- dig_expt = 0;
- continue;
- } else if (ch >= (duk_small_int_t) 'a' && ch <= (duk_small_int_t) 'z') {
- dig = (duk_small_int_t) (ch - (duk_small_int_t) 'a' + 0x0a);
- } else if (ch >= (duk_small_int_t) 'A' && ch <= (duk_small_int_t) 'Z') {
- dig = (duk_small_int_t) (ch - (duk_small_int_t) 'A' + 0x0a);
- } else {
- dig = 255; /* triggers garbage digit check below */
- }
- DUK_ASSERT((dig >= 0 && dig <= 35) || dig == 255);
-
- if (dig >= radix) {
- if (allow_garbage) {
- DUK_DDD(DUK_DDDPRINT("garbage termination"));
- break;
- } else {
- DUK_DDD(DUK_DDDPRINT("parse failed: trailing garbage or invalid digit"));
- goto parse_fail;
- }
- }
-
- if (dig_expt < 0) {
- /* whole or fraction digit */
-
- if (dig_prec < duk__str2num_digits_for_radix[radix - 2]) {
- /* significant from precision perspective */
-
- duk_small_int_t f_zero = duk__bi_is_zero(&nc_ctx->f);
- if (f_zero && dig == 0) {
- /* Leading zero is not counted towards precision digits; not
- * in the integer part, nor in the fraction part.
- */
- if (dig_frac < 0) {
- dig_lzero++;
- }
- } else {
- /* XXX: join these ops (multiply-accumulate), but only if
- * code footprint decreases.
- */
- duk__bi_mul_small(&nc_ctx->t1, &nc_ctx->f, radix);
- duk__bi_add_small(&nc_ctx->f, &nc_ctx->t1, dig);
- dig_prec++;
- }
- } else {
- /* Ignore digits beyond a radix-specific limit, but note them
- * in expt_adj.
- */
- expt_adj++;
- }
-
- if (dig_frac >= 0) {
- dig_frac++;
- expt_adj--;
- } else {
- dig_whole++;
- }
- } else {
- /* exponent digit */
-
- expt = expt * radix + dig;
- if (expt > DUK_S2N_MAX_EXPONENT) {
- /* impose a reasonable exponent limit, so that exp
- * doesn't need to get tracked using a bigint.
- */
- DUK_DDD(DUK_DDDPRINT("parse failed: exponent too large"));
- goto parse_explimit_error;
- }
- dig_expt++;
- }
- }
-
- /* Leading zero. */
-
- if (dig_lzero > 0 && dig_whole > 1) {
- if (!allow_leading_zero) {
- DUK_DDD(DUK_DDDPRINT("parse failed: leading zeroes not allowed in integer part"));
- goto parse_fail;
- }
- }
-
- /* Validity checks for various fraction formats ("0.1", ".1", "1.", "."). */
-
- if (dig_whole == 0) {
- if (dig_frac == 0) {
- /* "." is not accepted in any format */
- DUK_DDD(DUK_DDDPRINT("parse failed: plain period without leading or trailing digits"));
- goto parse_fail;
- } else if (dig_frac > 0) {
- /* ".123" */
- if (!allow_naked_frac) {
- DUK_DDD(DUK_DDDPRINT("parse failed: fraction part not allowed without "
- "leading integer digit(s)"));
- goto parse_fail;
- }
- } else {
- /* empty ("") is allowed in some formats (e.g. Number(''), as zero */
- if (!allow_empty) {
- DUK_DDD(DUK_DDDPRINT("parse failed: empty string not allowed (as zero)"));
- goto parse_fail;
- }
- }
- } else {
- if (dig_frac == 0) {
- /* "123." is allowed in some formats */
- if (!allow_empty_frac) {
- DUK_DDD(DUK_DDDPRINT("parse failed: empty fractions"));
- goto parse_fail;
- }
- } else if (dig_frac > 0) {
- /* "123.456" */
- ;
- } else {
- /* "123" */
- ;
- }
- }
-
- /* Exponent without digits (e.g. "1e" or "1e+"). If trailing garbage is
- * allowed, ignore exponent part as garbage (= parse as "1", i.e. exp 0).
- */
-
- if (dig_expt == 0) {
- if (!allow_garbage) {
- DUK_DDD(DUK_DDDPRINT("parse failed: empty exponent"));
- goto parse_fail;
- }
- DUK_ASSERT(expt == 0);
- }
-
- if (expt_neg) {
- expt = -expt;
- }
- DUK_DDD(DUK_DDDPRINT("expt=%ld, expt_adj=%ld, net exponent -> %ld",
- (long) expt, (long) expt_adj, (long) (expt + expt_adj)));
- expt += expt_adj;
-
- /* Fast path check. */
-
- if (nc_ctx->f.n <= 1 && /* 32-bit value */
- expt == 0 /* no net exponent */) {
- /* Fast path is triggered for no exponent and also for balanced exponent
- * and fraction parts, e.g. for "1.23e2" == "123". Remember to respect
- * zero sign.
- */
-
- /* XXX: could accept numbers larger than 32 bits, e.g. up to 53 bits? */
- DUK_DDD(DUK_DDDPRINT("fast path number parse"));
- if (nc_ctx->f.n == 1) {
- res = (double) nc_ctx->f.v[0];
- } else {
- res = 0.0;
- }
- goto negcheck_and_ret;
- }
-
- /* Significand ('f') padding. */
-
- while (dig_prec < duk__str2num_digits_for_radix[radix - 2]) {
- /* Pad significand with "virtual" zero digits so that Dragon4 will
- * have enough (apparent) precision to work with.
- */
- DUK_DDD(DUK_DDDPRINT("dig_prec=%ld, pad significand with zero", (long) dig_prec));
- duk__bi_mul_small_copy(&nc_ctx->f, radix, &nc_ctx->t1);
- DUK__BI_PRINT("f", &nc_ctx->f);
- expt--;
- dig_prec++;
- }
-
- DUK_DDD(DUK_DDDPRINT("final exponent: %ld", (long) expt));
-
- /* Detect zero special case. */
-
- if (nc_ctx->f.n == 0) {
- /* This may happen even after the fast path check, if exponent is
- * not balanced (e.g. "0e1"). Remember to respect zero sign.
- */
- DUK_DDD(DUK_DDDPRINT("significand is zero"));
- res = 0.0;
- goto negcheck_and_ret;
- }
-
-
- /* Quick reject of too large or too small exponents. This check
- * would be incorrect for zero (e.g. "0e1000" is zero, not Infinity)
- * so zero check must be above.
- */
-
- explim = &duk__str2num_exp_limits[radix - 2];
- if (expt > explim->upper) {
- DUK_DDD(DUK_DDDPRINT("exponent too large -> infinite"));
- res = (duk_double_t) DUK_DOUBLE_INFINITY;
- goto negcheck_and_ret;
- } else if (expt < explim->lower) {
- DUK_DDD(DUK_DDDPRINT("exponent too small -> zero"));
- res = (duk_double_t) 0.0;
- goto negcheck_and_ret;
- }
-
- nc_ctx->is_s2n = 1;
- nc_ctx->e = expt;
- nc_ctx->b = radix;
- nc_ctx->B = 2;
- nc_ctx->is_fixed = 1;
- nc_ctx->abs_pos = 0;
- nc_ctx->req_digits = 53 + 1;
-
- DUK__BI_PRINT("f", &nc_ctx->f);
- DUK_DDD(DUK_DDDPRINT("e=%ld", (long) nc_ctx->e));
-
- /*
- * Dragon4 slow path (binary) digit generation.
- * An extra digit is generated for rounding.
- */
-
- duk__dragon4_prepare(nc_ctx); /* setup many variables in nc_ctx */
-
- DUK_DDD(DUK_DDDPRINT("after prepare:"));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("mp", &nc_ctx->mp);
- DUK__BI_PRINT("mm", &nc_ctx->mm);
-
- duk__dragon4_scale(nc_ctx);
-
- DUK_DDD(DUK_DDDPRINT("after scale; k=%ld", (long) nc_ctx->k));
- DUK__BI_PRINT("r", &nc_ctx->r);
- DUK__BI_PRINT("s", &nc_ctx->s);
- DUK__BI_PRINT("mp", &nc_ctx->mp);
- DUK__BI_PRINT("mm", &nc_ctx->mm);
-
- duk__dragon4_generate(nc_ctx);
-
- DUK_ASSERT(nc_ctx->count == 53 + 1);
-
- /*
- * Convert binary digits into an IEEE double. Need to handle
- * denormals and rounding correctly.
- */
-
- duk__dragon4_ctx_to_double(nc_ctx, &res);
- goto negcheck_and_ret;
-
- negcheck_and_ret:
- if (neg) {
- res = -res;
- }
- duk_pop(ctx);
- duk_push_number(ctx, (double) res);
- DUK_DDD(DUK_DDDPRINT("result: %!T", (duk_tval *) duk_get_tval(ctx, -1)));
- return;
-
- parse_fail:
- DUK_DDD(DUK_DDDPRINT("parse failed"));
- duk_pop(ctx);
- duk_push_nan(ctx);
- return;
-
- parse_explimit_error:
- DUK_DDD(DUK_DDDPRINT("parse failed, internal error, can't return a value"));
- DUK_ERROR_RANGE(thr, "exponent too large");
- return;
-}
-#line 1 "duk_regexp_compiler.c"
-/*
- * Regexp compilation.
- *
- * See doc/regexp.rst for a discussion of the compilation approach and
- * current limitations.
- *
- * Regexp bytecode assumes jumps can be expressed with signed 32-bit
- * integers. Consequently the bytecode size must not exceed 0x7fffffffL.
- * The implementation casts duk_size_t (buffer size) to duk_(u)int32_t
- * in many places. Although this could be changed, the bytecode format
- * limit would still prevent regexps exceeding the signed 32-bit limit
- * from working.
- *
- * XXX: The implementation does not prevent bytecode from exceeding the
- * maximum supported size. This could be done by limiting the maximum
- * input string size (assuming an upper bound can be computed for number
- * of bytecode bytes emitted per input byte) or checking buffer maximum
- * size when emitting bytecode (slower).
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-
-/*
- * Helper macros
- */
-
-#define DUK__RE_INITIAL_BUFSIZE 64
-
-#undef DUK__RE_BUFLEN
-#define DUK__RE_BUFLEN(re_ctx) \
- DUK_BW_GET_SIZE(re_ctx->thr, &re_ctx->bw)
-
-/*
- * Disjunction struct: result of parsing a disjunction
- */
-
-typedef struct {
- /* Number of characters that the atom matches (e.g. 3 for 'abc'),
- * -1 if atom is complex and number of matched characters either
- * varies or is not known.
- */
- duk_int32_t charlen;
-
-#if 0
- /* These are not needed to implement quantifier capture handling,
- * but might be needed at some point.
- */
-
- /* re_ctx->captures at start and end of atom parsing.
- * Since 'captures' indicates highest capture number emitted
- * so far in a DUK_REOP_SAVE, the captures numbers saved by
- * the atom are: ]start_captures,end_captures].
- */
- duk_uint32_t start_captures;
- duk_uint32_t end_captures;
-#endif
-} duk__re_disjunction_info;
-
-/*
- * Encoding helpers
- *
- * Some of the typing is bytecode based, e.g. slice sizes are unsigned 32-bit
- * even though the buffer operations will use duk_size_t.
- */
-
-/* XXX: the insert helpers should ensure that the bytecode result is not
- * larger than expected (or at least assert for it). Many things in the
- * bytecode, like skip offsets, won't work correctly if the bytecode is
- * larger than say 2G.
- */
-
-DUK_LOCAL duk_uint32_t duk__encode_i32(duk_int32_t x) {
- if (x < 0) {
- return ((duk_uint32_t) (-x)) * 2 + 1;
- } else {
- return ((duk_uint32_t) x) * 2;
- }
-}
-
-/* XXX: return type should probably be duk_size_t, or explicit checks are needed for
- * maximum size.
- */
-DUK_LOCAL duk_uint32_t duk__insert_u32(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_uint32_t x) {
- duk_uint8_t buf[DUK_UNICODE_MAX_XUTF8_LENGTH];
- duk_small_int_t len;
-
- len = duk_unicode_encode_xutf8((duk_ucodepoint_t) x, buf);
- DUK_BW_INSERT_ENSURE_BYTES(re_ctx->thr, &re_ctx->bw, offset, buf, len);
- return (duk_uint32_t) len;
-}
-
-DUK_LOCAL duk_uint32_t duk__append_u32(duk_re_compiler_ctx *re_ctx, duk_uint32_t x) {
- duk_uint8_t buf[DUK_UNICODE_MAX_XUTF8_LENGTH];
- duk_small_int_t len;
-
- len = duk_unicode_encode_xutf8((duk_ucodepoint_t) x, buf);
- DUK_BW_WRITE_ENSURE_BYTES(re_ctx->thr, &re_ctx->bw, buf, len);
- return (duk_uint32_t) len;
-}
-
-DUK_LOCAL duk_uint32_t duk__insert_i32(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t x) {
- return duk__insert_u32(re_ctx, offset, duk__encode_i32(x));
-}
-
-#if 0 /* unused */
-DUK_LOCAL duk_uint32_t duk__append_i32(duk_re_compiler_ctx *re_ctx, duk_int32_t x) {
- return duk__append_u32(re_ctx, duk__encode_i32(x));
-}
-#endif
-
-/* special helper for emitting u16 lists (used for character ranges for built-in char classes) */
-DUK_LOCAL void duk__append_u16_list(duk_re_compiler_ctx *re_ctx, const duk_uint16_t *values, duk_uint32_t count) {
- /* Call sites don't need the result length so it's not accumulated. */
- while (count > 0) {
- (void) duk__append_u32(re_ctx, (duk_uint32_t) (*values++));
- count--;
- }
-}
-
-DUK_LOCAL void duk__insert_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_uint32_t data_offset, duk_uint32_t data_length) {
- DUK_BW_INSERT_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, offset, data_offset, data_length);
-}
-
-DUK_LOCAL void duk__append_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_offset, duk_uint32_t data_length) {
- DUK_BW_WRITE_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, data_offset, data_length);
-}
-
-DUK_LOCAL void duk__remove_slice(duk_re_compiler_ctx *re_ctx, duk_uint32_t data_offset, duk_uint32_t data_length) {
- DUK_BW_REMOVE_ENSURE_SLICE(re_ctx->thr, &re_ctx->bw, data_offset, data_length);
-}
-
-/*
- * Insert a jump offset at 'offset' to complete an instruction
- * (the jump offset is always the last component of an instruction).
- * The 'skip' argument must be computed relative to 'offset',
- * -without- taking into account the skip field being inserted.
- *
- * ... A B C ins X Y Z ... (ins may be a JUMP, SPLIT1/SPLIT2, etc)
- * => ... A B C ins SKIP X Y Z
- *
- * Computing the final (adjusted) skip value, which is relative to the
- * first byte of the next instruction, is a bit tricky because of the
- * variable length UTF-8 encoding. See doc/regexp.rst for discussion.
- */
-DUK_LOCAL duk_uint32_t duk__insert_jump_offset(duk_re_compiler_ctx *re_ctx, duk_uint32_t offset, duk_int32_t skip) {
- duk_small_int_t len;
-
- /* XXX: solve into closed form (smaller code) */
-
- if (skip < 0) {
- /* two encoding attempts suffices */
- len = duk_unicode_get_xutf8_length((duk_codepoint_t) duk__encode_i32(skip));
- len = duk_unicode_get_xutf8_length((duk_codepoint_t) duk__encode_i32(skip - (duk_int32_t) len));
- DUK_ASSERT(duk_unicode_get_xutf8_length(duk__encode_i32(skip - (duk_int32_t) len)) == len); /* no change */
- skip -= (duk_int32_t) len;
- }
- return duk__insert_i32(re_ctx, offset, skip);
-}
-
-DUK_LOCAL duk_uint32_t duk__append_jump_offset(duk_re_compiler_ctx *re_ctx, duk_int32_t skip) {
- return (duk_uint32_t) duk__insert_jump_offset(re_ctx, (duk_uint32_t) DUK__RE_BUFLEN(re_ctx), skip);
-}
-
-/*
- * duk_re_range_callback for generating character class ranges.
- *
- * When ignoreCase is false, the range is simply emitted as is.
- * We don't, for instance, eliminate duplicates or overlapping
- * ranges in a character class.
- *
- * When ignoreCase is true, the range needs to be normalized through
- * canonicalization. Unfortunately a canonicalized version of a
- * continuous range is not necessarily continuous (e.g. [x-{] is
- * continuous but [X-{] is not). The current algorithm creates the
- * canonicalized range(s) space efficiently at the cost of compile
- * time execution time (see doc/regexp.rst for discussion).
- *
- * Note that the ctx->nranges is a context-wide temporary value
- * (this is OK because there cannot be multiple character classes
- * being parsed simultaneously).
- */
-
-DUK_LOCAL void duk__generate_ranges(void *userdata, duk_codepoint_t r1, duk_codepoint_t r2, duk_bool_t direct) {
- duk_re_compiler_ctx *re_ctx = (duk_re_compiler_ctx *) userdata;
-
- DUK_DD(DUK_DDPRINT("duk__generate_ranges(): re_ctx=%p, range=[%ld,%ld] direct=%ld",
- (void *) re_ctx, (long) r1, (long) r2, (long) direct));
-
- if (!direct && (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE)) {
- /*
- * Canonicalize a range, generating result ranges as necessary.
- * Needs to exhaustively scan the entire range (at most 65536
- * code points). If 'direct' is set, caller (lexer) has ensured
- * that the range is already canonicalization compatible (this
- * is used to avoid unnecessary canonicalization of built-in
- * ranges like \W, which are not affected by canonicalization).
- *
- * NOTE: here is one place where we don't want to support chars
- * outside the BMP, because the exhaustive search would be
- * massively larger.
- */
-
- duk_codepoint_t i;
- duk_codepoint_t t;
- duk_codepoint_t r_start, r_end;
-
- r_start = duk_unicode_re_canonicalize_char(re_ctx->thr, r1);
- r_end = r_start;
- for (i = r1 + 1; i <= r2; i++) {
- t = duk_unicode_re_canonicalize_char(re_ctx->thr, i);
- if (t == r_end + 1) {
- r_end = t;
- } else {
- DUK_DD(DUK_DDPRINT("canonicalized, emit range: [%ld,%ld]", (long) r_start, (long) r_end));
- duk__append_u32(re_ctx, (duk_uint32_t) r_start);
- duk__append_u32(re_ctx, (duk_uint32_t) r_end);
- re_ctx->nranges++;
- r_start = t;
- r_end = t;
- }
- }
- DUK_DD(DUK_DDPRINT("canonicalized, emit range: [%ld,%ld]", (long) r_start, (long) r_end));
- duk__append_u32(re_ctx, (duk_uint32_t) r_start);
- duk__append_u32(re_ctx, (duk_uint32_t) r_end);
- re_ctx->nranges++;
- } else {
- DUK_DD(DUK_DDPRINT("direct, emit range: [%ld,%ld]", (long) r1, (long) r2));
- duk__append_u32(re_ctx, (duk_uint32_t) r1);
- duk__append_u32(re_ctx, (duk_uint32_t) r2);
- re_ctx->nranges++;
- }
-}
-
-/*
- * Parse regexp Disjunction. Most of regexp compilation happens here.
- *
- * Handles Disjunction, Alternative, and Term productions directly without
- * recursion. The only constructs requiring recursion are positive/negative
- * lookaheads, capturing parentheses, and non-capturing parentheses.
- *
- * The function determines whether the entire disjunction is a 'simple atom'
- * (see doc/regexp.rst discussion on 'simple quantifiers') and if so,
- * returns the atom character length which is needed by the caller to keep
- * track of its own atom character length. A disjunction with more than one
- * alternative is never considered a simple atom (although in some cases
- * that might be the case).
- *
- * Return value: simple atom character length or < 0 if not a simple atom.
- * Appends the bytecode for the disjunction matcher to the end of the temp
- * buffer.
- *
- * Regexp top level structure is:
- *
- * Disjunction = Term*
- * | Term* | Disjunction
- *
- * Term = Assertion
- * | Atom
- * | Atom Quantifier
- *
- * An empty Term sequence is a valid disjunction alternative (e.g. /|||c||/).
- *
- * Notes:
- *
- * * Tracking of the 'simple-ness' of the current atom vs. the entire
- * disjunction are separate matters. For instance, the disjunction
- * may be complex, but individual atoms may be simple. Furthermore,
- * simple quantifiers are used whenever possible, even if the
- * disjunction as a whole is complex.
- *
- * * The estimate of whether an atom is simple is conservative now,
- * and it would be possible to expand it. For instance, captures
- * cause the disjunction to be marked complex, even though captures
- * -can- be handled by simple quantifiers with some minor modifications.
- *
- * * Disjunction 'tainting' as 'complex' is handled at the end of the
- * main for loop collectively for atoms. Assertions, quantifiers,
- * and '|' tokens need to taint the result manually if necessary.
- * Assertions cannot add to result char length, only atoms (and
- * quantifiers) can; currently quantifiers will taint the result
- * as complex though.
- */
-
-DUK_LOCAL void duk__parse_disjunction(duk_re_compiler_ctx *re_ctx, duk_bool_t expect_eof, duk__re_disjunction_info *out_atom_info) {
- duk_int32_t atom_start_offset = -1; /* negative -> no atom matched on previous round */
- duk_int32_t atom_char_length = 0; /* negative -> complex atom */
- duk_uint32_t atom_start_captures = re_ctx->captures; /* value of re_ctx->captures at start of atom */
- duk_int32_t unpatched_disjunction_split = -1;
- duk_int32_t unpatched_disjunction_jump = -1;
- duk_uint32_t entry_offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx);
- duk_int32_t res_charlen = 0; /* -1 if disjunction is complex, char length if simple */
- duk__re_disjunction_info tmp_disj;
-
- DUK_ASSERT(out_atom_info != NULL);
-
- if (re_ctx->recursion_depth >= re_ctx->recursion_limit) {
- DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_COMPILER_RECURSION_LIMIT);
- }
- re_ctx->recursion_depth++;
-
-#if 0
- out_atom_info->start_captures = re_ctx->captures;
-#endif
-
- for (;;) {
- /* atom_char_length, atom_start_offset, atom_start_offset reflect the
- * atom matched on the previous loop. If a quantifier is encountered
- * on this loop, these are needed to handle the quantifier correctly.
- * new_atom_char_length etc are for the atom parsed on this round;
- * they're written to atom_char_length etc at the end of the round.
- */
- duk_int32_t new_atom_char_length; /* char length of the atom parsed in this loop */
- duk_int32_t new_atom_start_offset; /* bytecode start offset of the atom parsed in this loop
- * (allows quantifiers to copy the atom bytecode)
- */
- duk_uint32_t new_atom_start_captures; /* re_ctx->captures at the start of the atom parsed in this loop */
-
- duk_lexer_parse_re_token(&re_ctx->lex, &re_ctx->curr_token);
-
- DUK_DD(DUK_DDPRINT("re token: %ld (num=%ld, char=%c)",
- (long) re_ctx->curr_token.t,
- (long) re_ctx->curr_token.num,
- (re_ctx->curr_token.num >= 0x20 && re_ctx->curr_token.num <= 0x7e) ?
- (int) re_ctx->curr_token.num : (int) '?'));
-
- /* set by atom case clauses */
- new_atom_start_offset = -1;
- new_atom_char_length = -1;
- new_atom_start_captures = re_ctx->captures;
-
- switch (re_ctx->curr_token.t) {
- case DUK_RETOK_DISJUNCTION: {
- /*
- * The handling here is a bit tricky. If a previous '|' has been processed,
- * we have a pending split1 and a pending jump (for a previous match). These
- * need to be back-patched carefully. See docs for a detailed example.
- */
-
- /* patch pending jump and split */
- if (unpatched_disjunction_jump >= 0) {
- duk_uint32_t offset;
-
- DUK_ASSERT(unpatched_disjunction_split >= 0);
- offset = unpatched_disjunction_jump;
- offset += duk__insert_jump_offset(re_ctx,
- offset,
- (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - offset));
- /* offset is now target of the pending split (right after jump) */
- duk__insert_jump_offset(re_ctx,
- unpatched_disjunction_split,
- offset - unpatched_disjunction_split);
- }
-
- /* add a new pending split to the beginning of the entire disjunction */
- (void) duk__insert_u32(re_ctx,
- entry_offset,
- DUK_REOP_SPLIT1); /* prefer direct execution */
- unpatched_disjunction_split = entry_offset + 1; /* +1 for opcode */
-
- /* add a new pending match jump for latest finished alternative */
- duk__append_u32(re_ctx, DUK_REOP_JUMP);
- unpatched_disjunction_jump = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
-
- /* 'taint' result as complex */
- res_charlen = -1;
- break;
- }
- case DUK_RETOK_QUANTIFIER: {
- if (atom_start_offset < 0) {
- DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_INVALID_QUANTIFIER_NO_ATOM);
- }
- if (re_ctx->curr_token.qmin > re_ctx->curr_token.qmax) {
- DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_INVALID_QUANTIFIER_VALUES);
- }
- if (atom_char_length >= 0) {
- /*
- * Simple atom
- *
- * If atom_char_length is zero, we'll have unbounded execution time for e.g.
- * /()*x/.exec('x'). We can't just skip the match because it might have some
- * side effects (for instance, if we allowed captures in simple atoms, the
- * capture needs to happen). The simple solution below is to force the
- * quantifier to match at most once, since the additional matches have no effect.
- *
- * With a simple atom there can be no capture groups, so no captures need
- * to be reset.
- */
- duk_int32_t atom_code_length;
- duk_uint32_t offset;
- duk_uint32_t qmin, qmax;
-
- qmin = re_ctx->curr_token.qmin;
- qmax = re_ctx->curr_token.qmax;
- if (atom_char_length == 0) {
- /* qmin and qmax will be 0 or 1 */
- if (qmin > 1) {
- qmin = 1;
- }
- if (qmax > 1) {
- qmax = 1;
- }
- }
-
- duk__append_u32(re_ctx, DUK_REOP_MATCH); /* complete 'sub atom' */
- atom_code_length = (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - atom_start_offset);
-
- offset = atom_start_offset;
- if (re_ctx->curr_token.greedy) {
- offset += duk__insert_u32(re_ctx, offset, DUK_REOP_SQGREEDY);
- offset += duk__insert_u32(re_ctx, offset, qmin);
- offset += duk__insert_u32(re_ctx, offset, qmax);
- offset += duk__insert_u32(re_ctx, offset, atom_char_length);
- offset += duk__insert_jump_offset(re_ctx, offset, atom_code_length);
- } else {
- offset += duk__insert_u32(re_ctx, offset, DUK_REOP_SQMINIMAL);
- offset += duk__insert_u32(re_ctx, offset, qmin);
- offset += duk__insert_u32(re_ctx, offset, qmax);
- offset += duk__insert_jump_offset(re_ctx, offset, atom_code_length);
- }
- DUK_UNREF(offset); /* silence scan-build warning */
- } else {
- /*
- * Complex atom
- *
- * The original code is used as a template, and removed at the end
- * (this differs from the handling of simple quantifiers).
- *
- * NOTE: there is no current solution for empty atoms in complex
- * quantifiers. This would need some sort of a 'progress' instruction.
- *
- * XXX: impose limit on maximum result size, i.e. atom_code_len * atom_copies?
- */
- duk_int32_t atom_code_length;
- duk_uint32_t atom_copies;
- duk_uint32_t tmp_qmin, tmp_qmax;
-
- /* pre-check how many atom copies we're willing to make (atom_copies not needed below) */
- atom_copies = (re_ctx->curr_token.qmax == DUK_RE_QUANTIFIER_INFINITE) ?
- re_ctx->curr_token.qmin : re_ctx->curr_token.qmax;
- if (atom_copies > DUK_RE_MAX_ATOM_COPIES) {
- DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_QUANTIFIER_TOO_MANY_COPIES);
- }
-
- /* wipe the capture range made by the atom (if any) */
- DUK_ASSERT(atom_start_captures <= re_ctx->captures);
- if (atom_start_captures != re_ctx->captures) {
- DUK_ASSERT(atom_start_captures < re_ctx->captures);
- DUK_DDD(DUK_DDDPRINT("must wipe ]atom_start_captures,re_ctx->captures]: ]%ld,%ld]",
- (long) atom_start_captures, (long) re_ctx->captures));
-
- /* insert (DUK_REOP_WIPERANGE, start, count) in reverse order so the order ends up right */
- duk__insert_u32(re_ctx, atom_start_offset, (re_ctx->captures - atom_start_captures) * 2);
- duk__insert_u32(re_ctx, atom_start_offset, (atom_start_captures + 1) * 2);
- duk__insert_u32(re_ctx, atom_start_offset, DUK_REOP_WIPERANGE);
- } else {
- DUK_DDD(DUK_DDDPRINT("no need to wipe captures: atom_start_captures == re_ctx->captures == %ld",
- (long) atom_start_captures));
- }
-
- atom_code_length = (duk_int32_t) DUK__RE_BUFLEN(re_ctx) - atom_start_offset;
-
- /* insert the required matches (qmin) by copying the atom */
- tmp_qmin = re_ctx->curr_token.qmin;
- tmp_qmax = re_ctx->curr_token.qmax;
- while (tmp_qmin > 0) {
- duk__append_slice(re_ctx, atom_start_offset, atom_code_length);
- tmp_qmin--;
- if (tmp_qmax != DUK_RE_QUANTIFIER_INFINITE) {
- tmp_qmax--;
- }
- }
- DUK_ASSERT(tmp_qmin == 0);
-
- /* insert code for matching the remainder - infinite or finite */
- if (tmp_qmax == DUK_RE_QUANTIFIER_INFINITE) {
- /* reuse last emitted atom for remaining 'infinite' quantifier */
-
- if (re_ctx->curr_token.qmin == 0) {
- /* Special case: original qmin was zero so there is nothing
- * to repeat. Emit an atom copy but jump over it here.
- */
- duk__append_u32(re_ctx, DUK_REOP_JUMP);
- duk__append_jump_offset(re_ctx, atom_code_length);
- duk__append_slice(re_ctx, atom_start_offset, atom_code_length);
- }
- if (re_ctx->curr_token.greedy) {
- duk__append_u32(re_ctx, DUK_REOP_SPLIT2); /* prefer jump */
- } else {
- duk__append_u32(re_ctx, DUK_REOP_SPLIT1); /* prefer direct */
- }
- duk__append_jump_offset(re_ctx, -atom_code_length - 1); /* -1 for opcode */
- } else {
- /*
- * The remaining matches are emitted as sequence of SPLITs and atom
- * copies; the SPLITs skip the remaining copies and match the sequel.
- * This sequence needs to be emitted starting from the last copy
- * because the SPLITs are variable length due to the variable length
- * skip offset. This causes a lot of memory copying now.
- *
- * Example structure (greedy, match maximum # atoms):
- *
- * SPLIT1 LSEQ
- * (atom)
- * SPLIT1 LSEQ ; <- the byte length of this instruction is needed
- * (atom) ; to encode the above SPLIT1 correctly
- * ...
- * LSEQ:
- */
- duk_uint32_t offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx);
- while (tmp_qmax > 0) {
- duk__insert_slice(re_ctx, offset, atom_start_offset, atom_code_length);
- if (re_ctx->curr_token.greedy) {
- duk__insert_u32(re_ctx, offset, DUK_REOP_SPLIT1); /* prefer direct */
- } else {
- duk__insert_u32(re_ctx, offset, DUK_REOP_SPLIT2); /* prefer jump */
- }
- duk__insert_jump_offset(re_ctx,
- offset + 1, /* +1 for opcode */
- (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - (offset + 1)));
- tmp_qmax--;
- }
- }
-
- /* remove the original 'template' atom */
- duk__remove_slice(re_ctx, atom_start_offset, atom_code_length);
- }
-
- /* 'taint' result as complex */
- res_charlen = -1;
- break;
- }
- case DUK_RETOK_ASSERT_START: {
- duk__append_u32(re_ctx, DUK_REOP_ASSERT_START);
- break;
- }
- case DUK_RETOK_ASSERT_END: {
- duk__append_u32(re_ctx, DUK_REOP_ASSERT_END);
- break;
- }
- case DUK_RETOK_ASSERT_WORD_BOUNDARY: {
- duk__append_u32(re_ctx, DUK_REOP_ASSERT_WORD_BOUNDARY);
- break;
- }
- case DUK_RETOK_ASSERT_NOT_WORD_BOUNDARY: {
- duk__append_u32(re_ctx, DUK_REOP_ASSERT_NOT_WORD_BOUNDARY);
- break;
- }
- case DUK_RETOK_ASSERT_START_POS_LOOKAHEAD:
- case DUK_RETOK_ASSERT_START_NEG_LOOKAHEAD: {
- duk_uint32_t offset;
- duk_uint32_t opcode = (re_ctx->curr_token.t == DUK_RETOK_ASSERT_START_POS_LOOKAHEAD) ?
- DUK_REOP_LOOKPOS : DUK_REOP_LOOKNEG;
-
- offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx);
- duk__parse_disjunction(re_ctx, 0, &tmp_disj);
- duk__append_u32(re_ctx, DUK_REOP_MATCH);
-
- (void) duk__insert_u32(re_ctx, offset, opcode);
- (void) duk__insert_jump_offset(re_ctx,
- offset + 1, /* +1 for opcode */
- (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - (offset + 1)));
-
- /* 'taint' result as complex -- this is conservative,
- * as lookaheads do not backtrack.
- */
- res_charlen = -1;
- break;
- }
- case DUK_RETOK_ATOM_PERIOD: {
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx, DUK_REOP_PERIOD);
- break;
- }
- case DUK_RETOK_ATOM_CHAR: {
- /* Note: successive characters could be joined into string matches
- * but this is not trivial (consider e.g. '/xyz+/); see docs for
- * more discussion.
- */
- duk_uint32_t ch;
-
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx, DUK_REOP_CHAR);
- ch = re_ctx->curr_token.num;
- if (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) {
- ch = duk_unicode_re_canonicalize_char(re_ctx->thr, ch);
- }
- duk__append_u32(re_ctx, ch);
- break;
- }
- case DUK_RETOK_ATOM_DIGIT:
- case DUK_RETOK_ATOM_NOT_DIGIT: {
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx,
- (re_ctx->curr_token.t == DUK_RETOK_ATOM_DIGIT) ?
- DUK_REOP_RANGES : DUK_REOP_INVRANGES);
- duk__append_u32(re_ctx, sizeof(duk_unicode_re_ranges_digit) / (2 * sizeof(duk_uint16_t)));
- duk__append_u16_list(re_ctx, duk_unicode_re_ranges_digit, sizeof(duk_unicode_re_ranges_digit) / sizeof(duk_uint16_t));
- break;
- }
- case DUK_RETOK_ATOM_WHITE:
- case DUK_RETOK_ATOM_NOT_WHITE: {
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx,
- (re_ctx->curr_token.t == DUK_RETOK_ATOM_WHITE) ?
- DUK_REOP_RANGES : DUK_REOP_INVRANGES);
- duk__append_u32(re_ctx, sizeof(duk_unicode_re_ranges_white) / (2 * sizeof(duk_uint16_t)));
- duk__append_u16_list(re_ctx, duk_unicode_re_ranges_white, sizeof(duk_unicode_re_ranges_white) / sizeof(duk_uint16_t));
- break;
- }
- case DUK_RETOK_ATOM_WORD_CHAR:
- case DUK_RETOK_ATOM_NOT_WORD_CHAR: {
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx,
- (re_ctx->curr_token.t == DUK_RETOK_ATOM_WORD_CHAR) ?
- DUK_REOP_RANGES : DUK_REOP_INVRANGES);
- duk__append_u32(re_ctx, sizeof(duk_unicode_re_ranges_wordchar) / (2 * sizeof(duk_uint16_t)));
- duk__append_u16_list(re_ctx, duk_unicode_re_ranges_wordchar, sizeof(duk_unicode_re_ranges_wordchar) / sizeof(duk_uint16_t));
- break;
- }
- case DUK_RETOK_ATOM_BACKREFERENCE: {
- duk_uint32_t backref = (duk_uint32_t) re_ctx->curr_token.num;
- if (backref > re_ctx->highest_backref) {
- re_ctx->highest_backref = backref;
- }
- new_atom_char_length = -1; /* mark as complex */
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx, DUK_REOP_BACKREFERENCE);
- duk__append_u32(re_ctx, backref);
- break;
- }
- case DUK_RETOK_ATOM_START_CAPTURE_GROUP: {
- duk_uint32_t cap;
-
- new_atom_char_length = -1; /* mark as complex (capture handling) */
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- cap = ++re_ctx->captures;
- duk__append_u32(re_ctx, DUK_REOP_SAVE);
- duk__append_u32(re_ctx, cap * 2);
- duk__parse_disjunction(re_ctx, 0, &tmp_disj); /* retval (sub-atom char length) unused, tainted as complex above */
- duk__append_u32(re_ctx, DUK_REOP_SAVE);
- duk__append_u32(re_ctx, cap * 2 + 1);
- break;
- }
- case DUK_RETOK_ATOM_START_NONCAPTURE_GROUP: {
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__parse_disjunction(re_ctx, 0, &tmp_disj);
- new_atom_char_length = tmp_disj.charlen;
- break;
- }
- case DUK_RETOK_ATOM_START_CHARCLASS:
- case DUK_RETOK_ATOM_START_CHARCLASS_INVERTED: {
- /*
- * Range parsing is done with a special lexer function which calls
- * us for every range parsed. This is different from how rest of
- * the parsing works, but avoids a heavy, arbitrary size intermediate
- * value type to hold the ranges.
- *
- * Another complication is the handling of character ranges when
- * case insensitive matching is used (see docs for discussion).
- * The range handler callback given to the lexer takes care of this
- * as well.
- *
- * Note that duplicate ranges are not eliminated when parsing character
- * classes, so that canonicalization of
- *
- * [0-9a-fA-Fx-{]
- *
- * creates the result (note the duplicate ranges):
- *
- * [0-9A-FA-FX-Z{-{]
- *
- * where [x-{] is split as a result of canonicalization. The duplicate
- * ranges are not a semantics issue: they work correctly.
- */
-
- duk_uint32_t offset;
-
- DUK_DD(DUK_DDPRINT("character class"));
-
- /* insert ranges instruction, range count patched in later */
- new_atom_char_length = 1;
- new_atom_start_offset = (duk_int32_t) DUK__RE_BUFLEN(re_ctx);
- duk__append_u32(re_ctx,
- (re_ctx->curr_token.t == DUK_RETOK_ATOM_START_CHARCLASS) ?
- DUK_REOP_RANGES : DUK_REOP_INVRANGES);
- offset = (duk_uint32_t) DUK__RE_BUFLEN(re_ctx); /* patch in range count later */
-
- /* parse ranges until character class ends */
- re_ctx->nranges = 0; /* note: ctx-wide temporary */
- duk_lexer_parse_re_ranges(&re_ctx->lex, duk__generate_ranges, (void *) re_ctx);
-
- /* insert range count */
- duk__insert_u32(re_ctx, offset, re_ctx->nranges);
- break;
- }
- case DUK_RETOK_ATOM_END_GROUP: {
- if (expect_eof) {
- DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_CLOSING_PAREN);
- }
- goto done;
- }
- case DUK_RETOK_EOF: {
- if (!expect_eof) {
- DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_END_OF_PATTERN);
- }
- goto done;
- }
- default: {
- DUK_ERROR_SYNTAX(re_ctx->thr, DUK_STR_UNEXPECTED_REGEXP_TOKEN);
- }
- }
-
- /* a complex (new) atom taints the result */
- if (new_atom_start_offset >= 0) {
- if (new_atom_char_length < 0) {
- res_charlen = -1;
- } else if (res_charlen >= 0) {
- /* only advance if not tainted */
- res_charlen += new_atom_char_length;
- }
- }
-
- /* record previous atom info in case next token is a quantifier */
- atom_start_offset = new_atom_start_offset;
- atom_char_length = new_atom_char_length;
- atom_start_captures = new_atom_start_captures;
- }
-
- done:
-
- /* finish up pending jump and split for last alternative */
- if (unpatched_disjunction_jump >= 0) {
- duk_uint32_t offset;
-
- DUK_ASSERT(unpatched_disjunction_split >= 0);
- offset = unpatched_disjunction_jump;
- offset += duk__insert_jump_offset(re_ctx,
- offset,
- (duk_int32_t) (DUK__RE_BUFLEN(re_ctx) - offset));
- /* offset is now target of the pending split (right after jump) */
- duk__insert_jump_offset(re_ctx,
- unpatched_disjunction_split,
- offset - unpatched_disjunction_split);
- }
-
-#if 0
- out_atom_info->end_captures = re_ctx->captures;
-#endif
- out_atom_info->charlen = res_charlen;
- DUK_DDD(DUK_DDDPRINT("parse disjunction finished: charlen=%ld",
- (long) out_atom_info->charlen));
-
- re_ctx->recursion_depth--;
-}
-
-/*
- * Flags parsing (see E5 Section 15.10.4.1).
- */
-
-DUK_LOCAL duk_uint32_t duk__parse_regexp_flags(duk_hthread *thr, duk_hstring *h) {
- const duk_uint8_t *p;
- const duk_uint8_t *p_end;
- duk_uint32_t flags = 0;
-
- p = DUK_HSTRING_GET_DATA(h);
- p_end = p + DUK_HSTRING_GET_BYTELEN(h);
-
- /* Note: can be safely scanned as bytes (undecoded) */
-
- while (p < p_end) {
- duk_uint8_t c = *p++;
- switch ((int) c) {
- case (int) 'g': {
- if (flags & DUK_RE_FLAG_GLOBAL) {
- goto error;
- }
- flags |= DUK_RE_FLAG_GLOBAL;
- break;
- }
- case (int) 'i': {
- if (flags & DUK_RE_FLAG_IGNORE_CASE) {
- goto error;
- }
- flags |= DUK_RE_FLAG_IGNORE_CASE;
- break;
- }
- case (int) 'm': {
- if (flags & DUK_RE_FLAG_MULTILINE) {
- goto error;
- }
- flags |= DUK_RE_FLAG_MULTILINE;
- break;
- }
- default: {
- goto error;
- }
- }
- }
-
- return flags;
-
- error:
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_REGEXP_FLAGS);
- return 0; /* never here */
-}
-
-/*
- * Create escaped RegExp source (E5 Section 15.10.3).
- *
- * The current approach is to special case the empty RegExp
- * ('' -> '(?:)') and otherwise replace unescaped '/' characters
- * with '\/' regardless of where they occur in the regexp.
- *
- * Note that normalization does not seem to be necessary for
- * RegExp literals (e.g. '/foo/') because to be acceptable as
- * a RegExp literal, the text between forward slashes must
- * already match the escaping requirements (e.g. must not contain
- * unescaped forward slashes or be empty). Escaping IS needed
- * for expressions like 'new Regexp("...", "")' however.
- * Currently, we re-escape in either case.
- *
- * Also note that we process the source here in UTF-8 encoded
- * form. This is correct, because any non-ASCII characters are
- * passed through without change.
- */
-
-DUK_LOCAL void duk__create_escaped_source(duk_hthread *thr, int idx_pattern) {
- duk_context *ctx = (duk_context *) thr;
- duk_hstring *h;
- const duk_uint8_t *p;
- duk_bufwriter_ctx bw_alloc;
- duk_bufwriter_ctx *bw;
- duk_uint8_t *q;
- duk_size_t i, n;
- duk_uint_fast8_t c_prev, c;
-
- h = duk_get_hstring(ctx, idx_pattern);
- DUK_ASSERT(h != NULL);
- p = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h);
- n = (duk_size_t) DUK_HSTRING_GET_BYTELEN(h);
-
- if (n == 0) {
- /* return '(?:)' */
- duk_push_hstring_stridx(ctx, DUK_STRIDX_ESCAPED_EMPTY_REGEXP);
- return;
- }
-
- bw = &bw_alloc;
- DUK_BW_INIT_PUSHBUF(thr, bw, n);
- q = DUK_BW_GET_PTR(thr, bw);
-
- c_prev = (duk_uint_fast8_t) 0;
-
- for (i = 0; i < n; i++) {
- c = p[i];
-
- q = DUK_BW_ENSURE_RAW(thr, bw, 2, q);
-
- if (c == (duk_uint_fast8_t) '/' && c_prev != (duk_uint_fast8_t) '\\') {
- /* Unescaped '/' ANYWHERE in the regexp (in disjunction,
- * inside a character class, ...) => same escape works.
- */
- *q++ = DUK_ASC_BACKSLASH;
- }
- *q++ = (duk_uint8_t) c;
-
- c_prev = c;
- }
-
- DUK_BW_SETPTR_AND_COMPACT(thr, bw, q);
- duk_to_string(ctx, -1); /* -> [ ... escaped_source ] */
-}
-
-/*
- * Exposed regexp compilation primitive.
- *
- * Sets up a regexp compilation context, and calls duk__parse_disjunction() to do the
- * actual parsing. Handles generation of the compiled regexp header and the
- * "boilerplate" capture of the matching substring (save 0 and 1). Also does some
- * global level regexp checks after recursive compilation has finished.
- *
- * An escaped version of the regexp source, suitable for use as a RegExp instance
- * 'source' property (see E5 Section 15.10.3), is also left on the stack.
- *
- * Input stack: [ pattern flags ]
- * Output stack: [ bytecode escaped_source ] (both as strings)
- */
-
-DUK_INTERNAL void duk_regexp_compile(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_re_compiler_ctx re_ctx;
- duk_lexer_point lex_point;
- duk_hstring *h_pattern;
- duk_hstring *h_flags;
- duk__re_disjunction_info ign_disj;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
-
- /*
- * Args validation
- */
-
- /* TypeError if fails */
- h_pattern = duk_require_hstring(ctx, -2);
- h_flags = duk_require_hstring(ctx, -1);
-
- /*
- * Create normalized 'source' property (E5 Section 15.10.3).
- */
-
- /* [ ... pattern flags ] */
-
- duk__create_escaped_source(thr, -2);
-
- /* [ ... pattern flags escaped_source ] */
-
- /*
- * Init compilation context
- */
-
- /* [ ... pattern flags escaped_source buffer ] */
-
- DUK_MEMZERO(&re_ctx, sizeof(re_ctx));
- DUK_LEXER_INITCTX(&re_ctx.lex); /* duplicate zeroing, expect for (possible) NULL inits */
- re_ctx.thr = thr;
- re_ctx.lex.thr = thr;
- re_ctx.lex.input = DUK_HSTRING_GET_DATA(h_pattern);
- re_ctx.lex.input_length = DUK_HSTRING_GET_BYTELEN(h_pattern);
- re_ctx.lex.token_limit = DUK_RE_COMPILE_TOKEN_LIMIT;
- re_ctx.recursion_limit = DUK_USE_REGEXP_COMPILER_RECLIMIT;
- re_ctx.re_flags = duk__parse_regexp_flags(thr, h_flags);
-
- DUK_BW_INIT_PUSHBUF(thr, &re_ctx.bw, DUK__RE_INITIAL_BUFSIZE);
-
- DUK_DD(DUK_DDPRINT("regexp compiler ctx initialized, flags=0x%08lx, recursion_limit=%ld",
- (unsigned long) re_ctx.re_flags, (long) re_ctx.recursion_limit));
-
- /*
- * Init lexer
- */
-
- lex_point.offset = 0; /* expensive init, just want to fill window */
- lex_point.line = 1;
- DUK_LEXER_SETPOINT(&re_ctx.lex, &lex_point);
-
- /*
- * Compilation
- */
-
- DUK_DD(DUK_DDPRINT("starting regexp compilation"));
-
- duk__append_u32(&re_ctx, DUK_REOP_SAVE);
- duk__append_u32(&re_ctx, 0);
- duk__parse_disjunction(&re_ctx, 1 /*expect_eof*/, &ign_disj);
- duk__append_u32(&re_ctx, DUK_REOP_SAVE);
- duk__append_u32(&re_ctx, 1);
- duk__append_u32(&re_ctx, DUK_REOP_MATCH);
-
- /*
- * Check for invalid backreferences; note that it is NOT an error
- * to back-reference a capture group which has not yet been introduced
- * in the pattern (as in /\1(foo)/); in fact, the backreference will
- * always match! It IS an error to back-reference a capture group
- * which will never be introduced in the pattern. Thus, we can check
- * for such references only after parsing is complete.
- */
-
- if (re_ctx.highest_backref > re_ctx.captures) {
- DUK_ERROR_SYNTAX(thr, DUK_STR_INVALID_BACKREFS);
- }
-
- /*
- * Emit compiled regexp header: flags, ncaptures
- * (insertion order inverted on purpose)
- */
-
- duk__insert_u32(&re_ctx, 0, (re_ctx.captures + 1) * 2);
- duk__insert_u32(&re_ctx, 0, re_ctx.re_flags);
-
- /* [ ... pattern flags escaped_source buffer ] */
-
- DUK_BW_COMPACT(thr, &re_ctx.bw);
- duk_to_string(ctx, -1); /* coerce to string */
-
- /* [ ... pattern flags escaped_source bytecode ] */
-
- /*
- * Finalize stack
- */
-
- duk_remove(ctx, -4); /* -> [ ... flags escaped_source bytecode ] */
- duk_remove(ctx, -3); /* -> [ ... escaped_source bytecode ] */
-
- DUK_DD(DUK_DDPRINT("regexp compilation successful, bytecode: %!T, escaped source: %!T",
- (duk_tval *) duk_get_tval(ctx, -1), (duk_tval *) duk_get_tval(ctx, -2)));
-}
-
-/*
- * Create a RegExp instance (E5 Section 15.10.7).
- *
- * Note: the output stack left by duk_regexp_compile() is directly compatible
- * with the input here.
- *
- * Input stack: [ escaped_source bytecode ] (both as strings)
- * Output stack: [ RegExp ]
- */
-
-DUK_INTERNAL void duk_regexp_create_instance(duk_hthread *thr) {
- duk_context *ctx = (duk_context *) thr;
- duk_hobject *h;
- duk_hstring *h_bc;
- duk_small_int_t re_flags;
-
- /* [ ... escape_source bytecode ] */
-
- h_bc = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_bc != NULL);
- DUK_ASSERT(DUK_HSTRING_GET_BYTELEN(h_bc) >= 1); /* always at least the header */
- DUK_ASSERT(DUK_HSTRING_GET_CHARLEN(h_bc) >= 1);
- DUK_ASSERT((duk_small_int_t) DUK_HSTRING_GET_DATA(h_bc)[0] < 0x80); /* flags always encodes to 1 byte */
- re_flags = (duk_small_int_t) DUK_HSTRING_GET_DATA(h_bc)[0];
-
- /* [ ... escaped_source bytecode ] */
-
- duk_push_object(ctx);
- h = duk_get_hobject(ctx, -1);
- DUK_ASSERT(h != NULL);
- duk_insert(ctx, -3);
-
- /* [ ... regexp_object escaped_source bytecode ] */
-
- DUK_HOBJECT_SET_CLASS_NUMBER(h, DUK_HOBJECT_CLASS_REGEXP);
- DUK_HOBJECT_SET_PROTOTYPE_UPDREF(thr, h, thr->builtins[DUK_BIDX_REGEXP_PROTOTYPE]);
-
- duk_xdef_prop_stridx(ctx, -3, DUK_STRIDX_INT_BYTECODE, DUK_PROPDESC_FLAGS_NONE);
-
- /* [ ... regexp_object escaped_source ] */
-
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_SOURCE, DUK_PROPDESC_FLAGS_NONE);
-
- /* [ ... regexp_object ] */
-
- duk_push_boolean(ctx, (re_flags & DUK_RE_FLAG_GLOBAL));
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_GLOBAL, DUK_PROPDESC_FLAGS_NONE);
-
- duk_push_boolean(ctx, (re_flags & DUK_RE_FLAG_IGNORE_CASE));
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_IGNORE_CASE, DUK_PROPDESC_FLAGS_NONE);
-
- duk_push_boolean(ctx, (re_flags & DUK_RE_FLAG_MULTILINE));
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_MULTILINE, DUK_PROPDESC_FLAGS_NONE);
-
- duk_push_int(ctx, 0);
- duk_xdef_prop_stridx(ctx, -2, DUK_STRIDX_LAST_INDEX, DUK_PROPDESC_FLAGS_W);
-
- /* [ ... regexp_object ] */
-}
-
-#undef DUK__RE_BUFLEN
-
-#else /* DUK_USE_REGEXP_SUPPORT */
-
-/* regexp support disabled */
-
-#endif /* DUK_USE_REGEXP_SUPPORT */
-#line 1 "duk_regexp_executor.c"
-/*
- * Regexp executor.
- *
- * Safety: the Ecmascript executor should prevent user from reading and
- * replacing regexp bytecode. Even so, the executor must validate all
- * memory accesses etc. When an invalid access is detected (e.g. a 'save'
- * opcode to invalid, unallocated index) it should fail with an internal
- * error but not cause a segmentation fault.
- *
- * Notes:
- *
- * - Backtrack counts are limited to unsigned 32 bits but should
- * technically be duk_size_t for strings longer than 4G chars.
- * This also requires a regexp bytecode change.
- */
-
-/* include removed: duk_internal.h */
-
-#ifdef DUK_USE_REGEXP_SUPPORT
-
-/*
- * Helpers for UTF-8 handling
- *
- * For bytecode readers the duk_uint32_t and duk_int32_t types are correct
- * because they're used for more than just codepoints.
- */
-
-DUK_LOCAL duk_uint32_t duk__bc_get_u32(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **pc) {
- return (duk_uint32_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, pc, re_ctx->bytecode, re_ctx->bytecode_end);
-}
-
-DUK_LOCAL duk_int32_t duk__bc_get_i32(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **pc) {
- duk_uint32_t t;
-
- /* signed integer encoding needed to work with UTF-8 */
- t = (duk_uint32_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, pc, re_ctx->bytecode, re_ctx->bytecode_end);
- if (t & 1) {
- return -((duk_int32_t) (t >> 1));
- } else {
- return (duk_int32_t) (t >> 1);
- }
-}
-
-DUK_LOCAL const duk_uint8_t *duk__utf8_backtrack(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end, duk_uint_fast32_t count) {
- const duk_uint8_t *p;
-
- /* Note: allow backtracking from p == ptr_end */
- p = *ptr;
- if (p < ptr_start || p > ptr_end) {
- goto fail;
- }
-
- while (count > 0) {
- for (;;) {
- p--;
- if (p < ptr_start) {
- goto fail;
- }
- if ((*p & 0xc0) != 0x80) {
- /* utf-8 continuation bytes have the form 10xx xxxx */
- break;
- }
- }
- count--;
- }
- *ptr = p;
- return p;
-
- fail:
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return NULL; /* never here */
-}
-
-DUK_LOCAL const duk_uint8_t *duk__utf8_advance(duk_hthread *thr, const duk_uint8_t **ptr, const duk_uint8_t *ptr_start, const duk_uint8_t *ptr_end, duk_uint_fast32_t count) {
- const duk_uint8_t *p;
-
- p = *ptr;
- if (p < ptr_start || p >= ptr_end) {
- goto fail;
- }
-
- while (count > 0) {
- for (;;) {
- p++;
-
- /* Note: if encoding ends by hitting end of input, we don't check that
- * the encoding is valid, we just assume it is.
- */
- if (p >= ptr_end || ((*p & 0xc0) != 0x80)) {
- /* utf-8 continuation bytes have the form 10xx xxxx */
- break;
- }
- }
- count--;
- }
-
- *ptr = p;
- return p;
-
- fail:
- DUK_ERROR_INTERNAL_DEFMSG(thr);
- return NULL; /* never here */
-}
-
-/*
- * Helpers for dealing with the input string
- */
-
-/* Get a (possibly canonicalized) input character from current sp. The input
- * itself is never modified, and captures always record non-canonicalized
- * characters even in case-insensitive matching.
- */
-DUK_LOCAL duk_codepoint_t duk__inp_get_cp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **sp) {
- duk_codepoint_t res = (duk_codepoint_t) duk_unicode_decode_xutf8_checked(re_ctx->thr, sp, re_ctx->input, re_ctx->input_end);
- if (re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) {
- res = duk_unicode_re_canonicalize_char(re_ctx->thr, res);
- }
- return res;
-}
-
-DUK_LOCAL const duk_uint8_t *duk__inp_backtrack(duk_re_matcher_ctx *re_ctx, const duk_uint8_t **sp, duk_uint_fast32_t count) {
- return duk__utf8_backtrack(re_ctx->thr, sp, re_ctx->input, re_ctx->input_end, count);
-}
-
-/* Backtrack utf-8 input and return a (possibly canonicalized) input character. */
-DUK_LOCAL duk_codepoint_t duk__inp_get_prev_cp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t *sp) {
- /* note: caller 'sp' is intentionally not updated here */
- (void) duk__inp_backtrack(re_ctx, &sp, (duk_uint_fast32_t) 1);
- return duk__inp_get_cp(re_ctx, &sp);
-}
-
-/*
- * Regexp recursive matching function.
- *
- * Returns 'sp' on successful match (points to character after last matched one),
- * NULL otherwise.
- *
- * The C recursion depth limit check is only performed in this function, this
- * suffices because the function is present in all true recursion required by
- * regexp execution.
- */
-
-DUK_LOCAL const duk_uint8_t *duk__match_regexp(duk_re_matcher_ctx *re_ctx, const duk_uint8_t *pc, const duk_uint8_t *sp) {
- if (re_ctx->recursion_depth >= re_ctx->recursion_limit) {
- DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_EXECUTOR_RECURSION_LIMIT);
- }
- re_ctx->recursion_depth++;
-
- for (;;) {
- duk_small_int_t op;
-
- if (re_ctx->steps_count >= re_ctx->steps_limit) {
- DUK_ERROR_RANGE(re_ctx->thr, DUK_STR_REGEXP_EXECUTOR_STEP_LIMIT);
- }
- re_ctx->steps_count++;
-
- op = (duk_small_int_t) duk__bc_get_u32(re_ctx, &pc);
-
- DUK_DDD(DUK_DDDPRINT("match: rec=%ld, steps=%ld, pc (after op)=%ld, sp=%ld, op=%ld",
- (long) re_ctx->recursion_depth,
- (long) re_ctx->steps_count,
- (long) (pc - re_ctx->bytecode),
- (long) (sp - re_ctx->input),
- (long) op));
-
- switch (op) {
- case DUK_REOP_MATCH: {
- goto match;
- }
- case DUK_REOP_CHAR: {
- /*
- * Byte-based matching would be possible for case-sensitive
- * matching but not for case-insensitive matching. So, we
- * match by decoding the input and bytecode character normally.
- *
- * Bytecode characters are assumed to be already canonicalized.
- * Input characters are canonicalized automatically by
- * duk__inp_get_cp() if necessary.
- *
- * There is no opcode for matching multiple characters. The
- * regexp compiler has trouble joining strings efficiently
- * during compilation. See doc/regexp.rst for more discussion.
- */
- duk_codepoint_t c1, c2;
-
- c1 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc);
- DUK_ASSERT(!(re_ctx->re_flags & DUK_RE_FLAG_IGNORE_CASE) ||
- c1 == duk_unicode_re_canonicalize_char(re_ctx->thr, c1)); /* canonicalized by compiler */
- if (sp >= re_ctx->input_end) {
- goto fail;
- }
- c2 = duk__inp_get_cp(re_ctx, &sp);
- DUK_DDD(DUK_DDDPRINT("char match, c1=%ld, c2=%ld", (long) c1, (long) c2));
- if (c1 != c2) {
- goto fail;
- }
- break;
- }
- case DUK_REOP_PERIOD: {
- duk_codepoint_t c;
-
- if (sp >= re_ctx->input_end) {
- goto fail;
- }
- c = duk__inp_get_cp(re_ctx, &sp);
- if (duk_unicode_is_line_terminator(c)) {
- /* E5 Sections 15.10.2.8, 7.3 */
- goto fail;
- }
- break;
- }
- case DUK_REOP_RANGES:
- case DUK_REOP_INVRANGES: {
- duk_uint32_t n;
- duk_codepoint_t c;
- duk_small_int_t match;
-
- n = duk__bc_get_u32(re_ctx, &pc);
- if (sp >= re_ctx->input_end) {
- goto fail;
- }
- c = duk__inp_get_cp(re_ctx, &sp);
-
- match = 0;
- while (n) {
- duk_codepoint_t r1, r2;
- r1 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc);
- r2 = (duk_codepoint_t) duk__bc_get_u32(re_ctx, &pc);
- DUK_DDD(DUK_DDDPRINT("matching ranges/invranges, n=%ld, r1=%ld, r2=%ld, c=%ld",
- (long) n, (long) r1, (long) r2, (long) c));
- if (c >= r1 && c <= r2) {
- /* Note: don't bail out early, we must read all the ranges from
- * bytecode. Another option is to skip them efficiently after
- * breaking out of here. Prefer smallest code.
- */
- match = 1;
- }
- n--;
- }
-
- if (op == DUK_REOP_RANGES) {
- if (!match) {
- goto fail;
- }
- } else {
- DUK_ASSERT(op == DUK_REOP_INVRANGES);
- if (match) {
- goto fail;
- }
- }
- break;
- }
- case DUK_REOP_ASSERT_START: {
- duk_codepoint_t c;
-
- if (sp <= re_ctx->input) {
- break;
- }
- if (!(re_ctx->re_flags & DUK_RE_FLAG_MULTILINE)) {
- goto fail;
- }
- c = duk__inp_get_prev_cp(re_ctx, sp);
- if (duk_unicode_is_line_terminator(c)) {
- /* E5 Sections 15.10.2.8, 7.3 */
- break;
- }
- goto fail;
- }
- case DUK_REOP_ASSERT_END: {
- duk_codepoint_t c;
- const duk_uint8_t *tmp_sp;
-
- if (sp >= re_ctx->input_end) {
- break;
- }
- if (!(re_ctx->re_flags & DUK_RE_FLAG_MULTILINE)) {
- goto fail;
- }
- tmp_sp = sp;
- c = duk__inp_get_cp(re_ctx, &tmp_sp);
- if (duk_unicode_is_line_terminator(c)) {
- /* E5 Sections 15.10.2.8, 7.3 */
- break;
- }
- goto fail;
- }
- case DUK_REOP_ASSERT_WORD_BOUNDARY:
- case DUK_REOP_ASSERT_NOT_WORD_BOUNDARY: {
- /*
- * E5 Section 15.10.2.6. The previous and current character
- * should -not- be canonicalized as they are now. However,
- * canonicalization does not affect the result of IsWordChar()
- * (which depends on Unicode characters never canonicalizing
- * into ASCII characters) so this does not matter.
- */
- duk_small_int_t w1, w2;
-
- if (sp <= re_ctx->input) {
- w1 = 0; /* not a wordchar */
- } else {
- duk_codepoint_t c;
- c = duk__inp_get_prev_cp(re_ctx, sp);
- w1 = duk_unicode_re_is_wordchar(c);
- }
- if (sp >= re_ctx->input_end) {
- w2 = 0; /* not a wordchar */
- } else {
- const duk_uint8_t *tmp_sp = sp; /* dummy so sp won't get updated */
- duk_codepoint_t c;
- c = duk__inp_get_cp(re_ctx, &tmp_sp);
- w2 = duk_unicode_re_is_wordchar(c);
- }
-
- if (op == DUK_REOP_ASSERT_WORD_BOUNDARY) {
- if (w1 == w2) {
- goto fail;
- }
- } else {
- DUK_ASSERT(op == DUK_REOP_ASSERT_NOT_WORD_BOUNDARY);
- if (w1 != w2) {
- goto fail;
- }
- }
- break;
- }
- case DUK_REOP_JUMP: {
- duk_int32_t skip;
-
- skip = duk__bc_get_i32(re_ctx, &pc);
- pc += skip;
- break;
- }
- case DUK_REOP_SPLIT1: {
- /* split1: prefer direct execution (no jump) */
- const duk_uint8_t *sub_sp;
- duk_int32_t skip;
-
- skip = duk__bc_get_i32(re_ctx, &pc);
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (sub_sp) {
- sp = sub_sp;
- goto match;
- }
- pc += skip;
- break;
- }
- case DUK_REOP_SPLIT2: {
- /* split2: prefer jump execution (not direct) */
- const duk_uint8_t *sub_sp;
- duk_int32_t skip;
-
- skip = duk__bc_get_i32(re_ctx, &pc);
- sub_sp = duk__match_regexp(re_ctx, pc + skip, sp);
- if (sub_sp) {
- sp = sub_sp;
- goto match;
- }
- break;
- }
- case DUK_REOP_SQMINIMAL: {
- duk_uint32_t q, qmin, qmax;
- duk_int32_t skip;
- const duk_uint8_t *sub_sp;
-
- qmin = duk__bc_get_u32(re_ctx, &pc);
- qmax = duk__bc_get_u32(re_ctx, &pc);
- skip = duk__bc_get_i32(re_ctx, &pc);
- DUK_DDD(DUK_DDDPRINT("minimal quantifier, qmin=%lu, qmax=%lu, skip=%ld",
- (unsigned long) qmin, (unsigned long) qmax, (long) skip));
-
- q = 0;
- while (q <= qmax) {
- if (q >= qmin) {
- sub_sp = duk__match_regexp(re_ctx, pc + skip, sp);
- if (sub_sp) {
- sp = sub_sp;
- goto match;
- }
- }
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (!sub_sp) {
- break;
- }
- sp = sub_sp;
- q++;
- }
- goto fail;
- }
- case DUK_REOP_SQGREEDY: {
- duk_uint32_t q, qmin, qmax, atomlen;
- duk_int32_t skip;
- const duk_uint8_t *sub_sp;
-
- qmin = duk__bc_get_u32(re_ctx, &pc);
- qmax = duk__bc_get_u32(re_ctx, &pc);
- atomlen = duk__bc_get_u32(re_ctx, &pc);
- skip = duk__bc_get_i32(re_ctx, &pc);
- DUK_DDD(DUK_DDDPRINT("greedy quantifier, qmin=%lu, qmax=%lu, atomlen=%lu, skip=%ld",
- (unsigned long) qmin, (unsigned long) qmax, (unsigned long) atomlen, (long) skip));
-
- q = 0;
- while (q < qmax) {
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (!sub_sp) {
- break;
- }
- sp = sub_sp;
- q++;
- }
- while (q >= qmin) {
- sub_sp = duk__match_regexp(re_ctx, pc + skip, sp);
- if (sub_sp) {
- sp = sub_sp;
- goto match;
- }
- if (q == qmin) {
- break;
- }
-
- /* Note: if atom were to contain e.g. captures, we would need to
- * re-match the atom to get correct captures. Simply quantifiers
- * do not allow captures in their atom now, so this is not an issue.
- */
-
- DUK_DDD(DUK_DDDPRINT("greedy quantifier, backtrack %ld characters (atomlen)",
- (long) atomlen));
- sp = duk__inp_backtrack(re_ctx, &sp, (duk_uint_fast32_t) atomlen);
- q--;
- }
- goto fail;
- }
- case DUK_REOP_SAVE: {
- duk_uint32_t idx;
- const duk_uint8_t *old;
- const duk_uint8_t *sub_sp;
-
- idx = duk__bc_get_u32(re_ctx, &pc);
- if (idx >= re_ctx->nsaved) {
- /* idx is unsigned, < 0 check is not necessary */
- DUK_D(DUK_DPRINT("internal error, regexp save index insane: idx=%ld", (long) idx));
- goto internal_error;
- }
- old = re_ctx->saved[idx];
- re_ctx->saved[idx] = sp;
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (sub_sp) {
- sp = sub_sp;
- goto match;
- }
- re_ctx->saved[idx] = old;
- goto fail;
- }
- case DUK_REOP_WIPERANGE: {
- /* Wipe capture range and save old values for backtracking.
- *
- * XXX: this typically happens with a relatively small idx_count.
- * It might be useful to handle cases where the count is small
- * (say <= 8) by saving the values in stack instead. This would
- * reduce memory churn and improve performance, at the cost of a
- * slightly higher code footprint.
- */
- duk_uint32_t idx_start, idx_count;
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- duk_uint32_t idx_end, idx;
-#endif
- duk_uint8_t **range_save;
- const duk_uint8_t *sub_sp;
-
- idx_start = duk__bc_get_u32(re_ctx, &pc);
- idx_count = duk__bc_get_u32(re_ctx, &pc);
- DUK_DDD(DUK_DDDPRINT("wipe saved range: start=%ld, count=%ld -> [%ld,%ld] (captures [%ld,%ld])",
- (long) idx_start, (long) idx_count,
- (long) idx_start, (long) (idx_start + idx_count - 1),
- (long) (idx_start / 2), (long) ((idx_start + idx_count - 1) / 2)));
- if (idx_start + idx_count > re_ctx->nsaved || idx_count == 0) {
- /* idx is unsigned, < 0 check is not necessary */
- DUK_D(DUK_DPRINT("internal error, regexp wipe indices insane: idx_start=%ld, idx_count=%ld",
- (long) idx_start, (long) idx_count));
- goto internal_error;
- }
- DUK_ASSERT(idx_count > 0);
-
- duk_require_stack((duk_context *) re_ctx->thr, 1);
- range_save = (duk_uint8_t **) duk_push_fixed_buffer((duk_context *) re_ctx->thr,
- sizeof(duk_uint8_t *) * idx_count);
- DUK_ASSERT(range_save != NULL);
- DUK_MEMCPY(range_save, re_ctx->saved + idx_start, sizeof(duk_uint8_t *) * idx_count);
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- idx_end = idx_start + idx_count;
- for (idx = idx_start; idx < idx_end; idx++) {
- re_ctx->saved[idx] = NULL;
- }
-#else
- DUK_MEMZERO((void *) (re_ctx->saved + idx_start), sizeof(duk_uint8_t *) * idx_count);
-#endif
-
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (sub_sp) {
- /* match: keep wiped/resaved values */
- DUK_DDD(DUK_DDDPRINT("match: keep wiped/resaved values [%ld,%ld] (captures [%ld,%ld])",
- (long) idx_start, (long) (idx_start + idx_count - 1),
- (long) (idx_start / 2), (long) ((idx_start + idx_count - 1) / 2)));
- duk_pop((duk_context *) re_ctx->thr);
- sp = sub_sp;
- goto match;
- }
-
- /* fail: restore saves */
- DUK_DDD(DUK_DDDPRINT("fail: restore wiped/resaved values [%ld,%ld] (captures [%ld,%ld])",
- (long) idx_start, (long) (idx_start + idx_count - 1),
- (long) (idx_start / 2), (long) ((idx_start + idx_count - 1) / 2)));
- DUK_MEMCPY((void *) (re_ctx->saved + idx_start),
- (const void *) range_save,
- sizeof(duk_uint8_t *) * idx_count);
- duk_pop((duk_context *) re_ctx->thr);
- goto fail;
- }
- case DUK_REOP_LOOKPOS:
- case DUK_REOP_LOOKNEG: {
- /*
- * Needs a save of multiple saved[] entries depending on what range
- * may be overwritten. Because the regexp parser does no such analysis,
- * we currently save the entire saved array here. Lookaheads are thus
- * a bit expensive. Note that the saved array is not needed for just
- * the lookahead sub-match, but for the matching of the entire sequel.
- *
- * The temporary save buffer is pushed on to the valstack to handle
- * errors correctly. Each lookahead causes a C recursion and pushes
- * more stuff on the value stack. If the C recursion limit is less
- * than the value stack spare, there is no need to check the stack.
- * We do so regardless, just in case.
- */
-
- duk_int32_t skip;
- duk_uint8_t **full_save;
- const duk_uint8_t *sub_sp;
-
- DUK_ASSERT(re_ctx->nsaved > 0);
-
- duk_require_stack((duk_context *) re_ctx->thr, 1);
- full_save = (duk_uint8_t **) duk_push_fixed_buffer((duk_context *) re_ctx->thr,
- sizeof(duk_uint8_t *) * re_ctx->nsaved);
- DUK_ASSERT(full_save != NULL);
- DUK_MEMCPY(full_save, re_ctx->saved, sizeof(duk_uint8_t *) * re_ctx->nsaved);
-
- skip = duk__bc_get_i32(re_ctx, &pc);
- sub_sp = duk__match_regexp(re_ctx, pc, sp);
- if (op == DUK_REOP_LOOKPOS) {
- if (!sub_sp) {
- goto lookahead_fail;
- }
- } else {
- if (sub_sp) {
- goto lookahead_fail;
- }
- }
- sub_sp = duk__match_regexp(re_ctx, pc + skip, sp);
- if (sub_sp) {
- /* match: keep saves */
- duk_pop((duk_context *) re_ctx->thr);
- sp = sub_sp;
- goto match;
- }
-
- /* fall through */
-
- lookahead_fail:
- /* fail: restore saves */
- DUK_MEMCPY((void *) re_ctx->saved,
- (const void *) full_save,
- sizeof(duk_uint8_t *) * re_ctx->nsaved);
- duk_pop((duk_context *) re_ctx->thr);
- goto fail;
- }
- case DUK_REOP_BACKREFERENCE: {
- /*
- * Byte matching for back-references would be OK in case-
- * sensitive matching. In case-insensitive matching we need
- * to canonicalize characters, so back-reference matching needs
- * to be done with codepoints instead. So, we just decode
- * everything normally here, too.
- *
- * Note: back-reference index which is 0 or higher than
- * NCapturingParens (= number of capturing parens in the
- * -entire- regexp) is a compile time error. However, a
- * backreference referring to a valid capture which has
- * not matched anything always succeeds! See E5 Section
- * 15.10.2.9, step 5, sub-step 3.
- */
- duk_uint32_t idx;
- const duk_uint8_t *p;
-
- idx = duk__bc_get_u32(re_ctx, &pc);
- idx = idx << 1; /* backref n -> saved indices [n*2, n*2+1] */
- if (idx < 2 || idx + 1 >= re_ctx->nsaved) {
- /* regexp compiler should catch these */
- DUK_D(DUK_DPRINT("internal error, backreference index insane"));
- goto internal_error;
- }
- if (!re_ctx->saved[idx] || !re_ctx->saved[idx+1]) {
- /* capture is 'undefined', always matches! */
- DUK_DDD(DUK_DDDPRINT("backreference: saved[%ld,%ld] not complete, always match",
- (long) idx, (long) (idx + 1)));
- break;
- }
- DUK_DDD(DUK_DDDPRINT("backreference: match saved[%ld,%ld]", (long) idx, (long) (idx + 1)));
-
- p = re_ctx->saved[idx];
- while (p < re_ctx->saved[idx+1]) {
- duk_codepoint_t c1, c2;
-
- /* Note: not necessary to check p against re_ctx->input_end:
- * the memory access is checked by duk__inp_get_cp(), while
- * valid compiled regexps cannot write a saved[] entry
- * which points to outside the string.
- */
- if (sp >= re_ctx->input_end) {
- goto fail;
- }
- c1 = duk__inp_get_cp(re_ctx, &p);
- c2 = duk__inp_get_cp(re_ctx, &sp);
- if (c1 != c2) {
- goto fail;
- }
- }
- break;
- }
- default: {
- DUK_D(DUK_DPRINT("internal error, regexp opcode error: %ld", (long) op));
- goto internal_error;
- }
- }
- }
-
- match:
- re_ctx->recursion_depth--;
- return sp;
-
- fail:
- re_ctx->recursion_depth--;
- return NULL;
-
- internal_error:
- DUK_ERROR_INTERNAL_DEFMSG(re_ctx->thr);
- return NULL; /* never here */
-}
-
-/*
- * Exposed matcher function which provides the semantics of RegExp.prototype.exec().
- *
- * RegExp.prototype.test() has the same semantics as exec() but does not return the
- * result object (which contains the matching string and capture groups). Currently
- * there is no separate test() helper, so a temporary result object is created and
- * discarded if test() is needed. This is intentional, to save code space.
- *
- * Input stack: [ ... re_obj input ]
- * Output stack: [ ... result ]
- */
-
-DUK_LOCAL void duk__regexp_match_helper(duk_hthread *thr, duk_small_int_t force_global) {
- duk_context *ctx = (duk_context *) thr;
- duk_re_matcher_ctx re_ctx;
- duk_hobject *h_regexp;
- duk_hstring *h_bytecode;
- duk_hstring *h_input;
- const duk_uint8_t *pc;
- const duk_uint8_t *sp;
- duk_small_int_t match = 0;
- duk_small_int_t global;
- duk_uint_fast32_t i;
- double d;
- duk_uint32_t char_offset;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(ctx != NULL);
-
- DUK_DD(DUK_DDPRINT("regexp match: regexp=%!T, input=%!T",
- (duk_tval *) duk_get_tval(ctx, -2),
- (duk_tval *) duk_get_tval(ctx, -1)));
-
- /*
- * Regexp instance check, bytecode check, input coercion.
- *
- * See E5 Section 15.10.6.
- */
-
- /* TypeError if wrong; class check, see E5 Section 15.10.6 */
- h_regexp = duk_require_hobject_with_class(ctx, -2, DUK_HOBJECT_CLASS_REGEXP);
- DUK_ASSERT(h_regexp != NULL);
- DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_regexp) == DUK_HOBJECT_CLASS_REGEXP);
- DUK_UNREF(h_regexp);
-
- duk_to_string(ctx, -1);
- h_input = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_input != NULL);
-
- duk_get_prop_stridx(ctx, -2, DUK_STRIDX_INT_BYTECODE); /* [ ... re_obj input ] -> [ ... re_obj input bc ] */
- h_bytecode = duk_require_hstring(ctx, -1); /* no regexp instance should exist without a non-configurable bytecode property */
- DUK_ASSERT(h_bytecode != NULL);
-
- /*
- * Basic context initialization.
- *
- * Some init values are read from the bytecode header
- * whose format is (UTF-8 codepoints):
- *
- * uint flags
- * uint nsaved (even, 2n+2 where n = num captures)
- */
-
- /* [ ... re_obj input bc ] */
-
- DUK_MEMZERO(&re_ctx, sizeof(re_ctx));
-
- re_ctx.thr = thr;
- re_ctx.input = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_input);
- re_ctx.input_end = re_ctx.input + DUK_HSTRING_GET_BYTELEN(h_input);
- re_ctx.bytecode = (const duk_uint8_t *) DUK_HSTRING_GET_DATA(h_bytecode);
- re_ctx.bytecode_end = re_ctx.bytecode + DUK_HSTRING_GET_BYTELEN(h_bytecode);
- re_ctx.saved = NULL;
- re_ctx.recursion_limit = DUK_USE_REGEXP_EXECUTOR_RECLIMIT;
- re_ctx.steps_limit = DUK_RE_EXECUTE_STEPS_LIMIT;
-
- /* read header */
- pc = re_ctx.bytecode;
- re_ctx.re_flags = duk__bc_get_u32(&re_ctx, &pc);
- re_ctx.nsaved = duk__bc_get_u32(&re_ctx, &pc);
- re_ctx.bytecode = pc;
-
- DUK_ASSERT(DUK_RE_FLAG_GLOBAL < 0x10000UL); /* must fit into duk_small_int_t */
- global = (duk_small_int_t) (force_global | (re_ctx.re_flags & DUK_RE_FLAG_GLOBAL));
-
- DUK_ASSERT(re_ctx.nsaved >= 2);
- DUK_ASSERT((re_ctx.nsaved % 2) == 0);
-
- duk_push_fixed_buffer(ctx, sizeof(duk_uint8_t *) * re_ctx.nsaved);
- re_ctx.saved = (const duk_uint8_t **) duk_get_buffer(ctx, -1, NULL);
- DUK_ASSERT(re_ctx.saved != NULL);
-
- /* [ ... re_obj input bc saved_buf ] */
-
- /* buffer is automatically zeroed */
-#ifdef DUK_USE_EXPLICIT_NULL_INIT
- for (i = 0; i < re_ctx.nsaved; i++) {
- re_ctx.saved[i] = (duk_uint8_t *) NULL;
- }
-#endif
-
- DUK_DDD(DUK_DDDPRINT("regexp ctx initialized, flags=0x%08lx, nsaved=%ld, recursion_limit=%ld, steps_limit=%ld",
- (unsigned long) re_ctx.re_flags, (long) re_ctx.nsaved, (long) re_ctx.recursion_limit,
- (long) re_ctx.steps_limit));
-
- /*
- * Get starting character offset for match, and initialize 'sp' based on it.
- *
- * Note: lastIndex is non-configurable so it must be present (we check the
- * internal class of the object above, so we know it is). User code can set
- * its value to an arbitrary (garbage) value though; E5 requires that lastIndex
- * be coerced to a number before using. The code below works even if the
- * property is missing: the value will then be coerced to zero.
- *
- * Note: lastIndex may be outside Uint32 range even after ToInteger() coercion.
- * For instance, ToInteger(+Infinity) = +Infinity. We track the match offset
- * as an integer, but pre-check it to be inside the 32-bit range before the loop.
- * If not, the check in E5 Section 15.10.6.2, step 9.a applies.
- */
-
- /* XXX: lastIndex handling produces a lot of asm */
-
- /* [ ... re_obj input bc saved_buf ] */
-
- duk_get_prop_stridx(ctx, -4, DUK_STRIDX_LAST_INDEX); /* -> [ ... re_obj input bc saved_buf lastIndex ] */
- (void) duk_to_int(ctx, -1); /* ToInteger(lastIndex) */
- d = duk_get_number(ctx, -1); /* integer, but may be +/- Infinite, +/- zero (not NaN, though) */
- duk_pop(ctx);
-
- if (global) {
- if (d < 0.0 || d > (double) DUK_HSTRING_GET_CHARLEN(h_input)) {
- /* match fail */
- char_offset = 0; /* not really necessary */
- DUK_ASSERT(match == 0);
- goto match_over;
- }
- char_offset = (duk_uint32_t) d;
- } else {
- /* lastIndex must be ignored for non-global regexps, but get the
- * value for (theoretical) side effects. No side effects can
- * really occur, because lastIndex is a normal property and is
- * always non-configurable for RegExp instances.
- */
- char_offset = (duk_uint32_t) 0;
- }
-
- sp = re_ctx.input + duk_heap_strcache_offset_char2byte(thr, h_input, char_offset);
-
- /*
- * Match loop.
- *
- * Try matching at different offsets until match found or input exhausted.
- */
-
- /* [ ... re_obj input bc saved_buf ] */
-
- DUK_ASSERT(match == 0);
-
- for (;;) {
- /* char offset in [0, h_input->clen] (both ends inclusive), checked before entry */
- DUK_ASSERT_DISABLE(char_offset >= 0);
- DUK_ASSERT(char_offset <= DUK_HSTRING_GET_CHARLEN(h_input));
-
- /* Note: ctx.steps is intentionally not reset, it applies to the entire unanchored match */
- DUK_ASSERT(re_ctx.recursion_depth == 0);
-
- DUK_DDD(DUK_DDDPRINT("attempt match at char offset %ld; %p [%p,%p]",
- (long) char_offset, (const void *) sp,
- (const void *) re_ctx.input, (const void *) re_ctx.input_end));
-
- /*
- * Note:
- *
- * - duk__match_regexp() is required not to longjmp() in ordinary "non-match"
- * conditions; a longjmp() will terminate the entire matching process.
- *
- * - Clearing saved[] is not necessary because backtracking does it
- *
- * - Backtracking also rewinds ctx.recursion back to zero, unless an
- * internal/limit error occurs (which causes a longjmp())
- *
- * - If we supported anchored matches, we would break out here
- * unconditionally; however, Ecmascript regexps don't have anchored
- * matches. It might make sense to implement a fast bail-out if
- * the regexp begins with '^' and sp is not 0: currently we'll just
- * run through the entire input string, trivially failing the match
- * at every non-zero offset.
- */
-
- if (duk__match_regexp(&re_ctx, re_ctx.bytecode, sp) != NULL) {
- DUK_DDD(DUK_DDDPRINT("match at offset %ld", (long) char_offset));
- match = 1;
- break;
- }
-
- /* advance by one character (code point) and one char_offset */
- char_offset++;
- if (char_offset > DUK_HSTRING_GET_CHARLEN(h_input)) {
- /*
- * Note:
- *
- * - Intentionally attempt (empty) match at char_offset == k_input->clen
- *
- * - Negative char_offsets have been eliminated and char_offset is duk_uint32_t
- * -> no need or use for a negative check
- */
-
- DUK_DDD(DUK_DDDPRINT("no match after trying all sp offsets"));
- break;
- }
-
- /* avoid calling at end of input, will DUK_ERROR (above check suffices to avoid this) */
- (void) duk__utf8_advance(thr, &sp, re_ctx.input, re_ctx.input_end, (duk_uint_fast32_t) 1);
- }
-
- match_over:
-
- /*
- * Matching complete, create result array or return a 'null'. Update lastIndex
- * if necessary. See E5 Section 15.10.6.2.
- *
- * Because lastIndex is a character (not byte) offset, we need the character
- * length of the match which we conveniently get as a side effect of interning
- * the matching substring (0th index of result array).
- *
- * saved[0] start pointer (~ byte offset) of current match
- * saved[1] end pointer (~ byte offset) of current match (exclusive)
- * char_offset start character offset of current match (-> .index of result)
- * char_end_offset end character offset (computed below)
- */
-
- /* [ ... re_obj input bc saved_buf ] */
-
- if (match) {
-#ifdef DUK_USE_ASSERTIONS
- duk_hobject *h_res;
-#endif
- duk_uint32_t char_end_offset = 0;
-
- DUK_DDD(DUK_DDDPRINT("regexp matches at char_offset %ld", (long) char_offset));
-
- DUK_ASSERT(re_ctx.nsaved >= 2); /* must have start and end */
- DUK_ASSERT((re_ctx.nsaved % 2) == 0); /* and even number */
-
- /* XXX: Array size is known before and (2 * re_ctx.nsaved) but not taken
- * advantage of now. The array is not compacted either, as regexp match
- * objects are usually short lived.
- */
-
- duk_push_array(ctx);
-
-#ifdef DUK_USE_ASSERTIONS
- h_res = duk_require_hobject(ctx, -1);
- DUK_ASSERT(DUK_HOBJECT_HAS_EXTENSIBLE(h_res));
- DUK_ASSERT(DUK_HOBJECT_HAS_EXOTIC_ARRAY(h_res));
- DUK_ASSERT(DUK_HOBJECT_GET_CLASS_NUMBER(h_res) == DUK_HOBJECT_CLASS_ARRAY);
-#endif
-
- /* [ ... re_obj input bc saved_buf res_obj ] */
-
- duk_push_u32(ctx, char_offset);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INDEX);
-
- duk_dup(ctx, -4);
- duk_xdef_prop_stridx_wec(ctx, -2, DUK_STRIDX_INPUT);
-
- for (i = 0; i < re_ctx.nsaved; i += 2) {
- /* Captures which are undefined have NULL pointers and are returned
- * as 'undefined'. The same is done when saved[] pointers are insane
- * (this should, of course, never happen in practice).
- */
- if (re_ctx.saved[i] && re_ctx.saved[i+1] && re_ctx.saved[i+1] >= re_ctx.saved[i]) {
- duk_hstring *h_saved;
-
- duk_push_lstring(ctx,
- (const char *) re_ctx.saved[i],
- (duk_size_t) (re_ctx.saved[i+1] - re_ctx.saved[i]));
- h_saved = duk_get_hstring(ctx, -1);
- DUK_ASSERT(h_saved != NULL);
-
- if (i == 0) {
- /* Assumes that saved[0] and saved[1] are always
- * set by regexp bytecode (if not, char_end_offset
- * will be zero). Also assumes clen reflects the
- * correct char length.
- */
- char_end_offset = char_offset + DUK_HSTRING_GET_CHARLEN(h_saved);
- }
- } else {
- duk_push_undefined(ctx);
- }
-
- /* [ ... re_obj input bc saved_buf res_obj val ] */
- duk_put_prop_index(ctx, -2, i / 2);
- }
-
- /* [ ... re_obj input bc saved_buf res_obj ] */
-
- /* NB: 'length' property is automatically updated by the array setup loop */
-
- if (global) {
- /* global regexp: lastIndex updated on match */
- duk_push_u32(ctx, char_end_offset);
- duk_put_prop_stridx(ctx, -6, DUK_STRIDX_LAST_INDEX);
- } else {
- /* non-global regexp: lastIndex never updated on match */
- ;
- }
- } else {
- /*
- * No match, E5 Section 15.10.6.2, step 9.a.i - 9.a.ii apply, regardless
- * of 'global' flag of the RegExp. In particular, if lastIndex is invalid
- * initially, it is reset to zero.
- */
-
- DUK_DDD(DUK_DDDPRINT("regexp does not match"));
-
- duk_push_null(ctx);
-
- /* [ ... re_obj input bc saved_buf res_obj ] */
-
- duk_push_int(ctx, 0);
- duk_put_prop_stridx(ctx, -6, DUK_STRIDX_LAST_INDEX);
- }
-
- /* [ ... re_obj input bc saved_buf res_obj ] */
-
- duk_insert(ctx, -5);
-
- /* [ ... res_obj re_obj input bc saved_buf ] */
-
- duk_pop_n(ctx, 4);
-
- /* [ ... res_obj ] */
-
- /* XXX: these last tricks are unnecessary if the function is made
- * a genuine native function.
- */
-}
-
-DUK_INTERNAL void duk_regexp_match(duk_hthread *thr) {
- duk__regexp_match_helper(thr, 0 /*force_global*/);
-}
-
-/* This variant is needed by String.prototype.split(); it needs to perform
- * global-style matching on a cloned RegExp which is potentially non-global.
- */
-DUK_INTERNAL void duk_regexp_match_force_global(duk_hthread *thr) {
- duk__regexp_match_helper(thr, 1 /*force_global*/);
-}
-
-#else /* DUK_USE_REGEXP_SUPPORT */
-
-/* regexp support disabled */
-
-#endif /* DUK_USE_REGEXP_SUPPORT */
-#line 1 "duk_selftest.c"
-/*
- * Self tests to ensure execution environment is sane. Intended to catch
- * compiler/platform problems which cannot be detected at compile time.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_SELF_TESTS)
-
-/*
- * Unions and structs for self tests
- */
-
-typedef union {
- double d;
- duk_uint8_t c[8];
-} duk__test_double_union;
-
-#define DUK__DBLUNION_CMP_TRUE(a,b) do { \
- if (DUK_MEMCMP((const void *) (a), (const void *) (b), sizeof(duk__test_double_union)) != 0) { \
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double union compares false (expected true)"); \
- } \
- } while (0)
-
-#define DUK__DBLUNION_CMP_FALSE(a,b) do { \
- if (DUK_MEMCMP((const void *) (a), (const void *) (b), sizeof(duk__test_double_union)) == 0) { \
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double union compares true (expected false)"); \
- } \
- } while (0)
-
-typedef union {
- duk_uint32_t i;
- duk_uint8_t c[8];
-} duk__test_u32_union;
-
-/*
- * Various sanity checks for typing
- */
-
-DUK_LOCAL void duk__selftest_types(void) {
- if (!(sizeof(duk_int8_t) == 1 &&
- sizeof(duk_uint8_t) == 1 &&
- sizeof(duk_int16_t) == 2 &&
- sizeof(duk_uint16_t) == 2 &&
- sizeof(duk_int32_t) == 4 &&
- sizeof(duk_uint32_t) == 4)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: duk_(u)int{8,16,32}_t size");
- }
-#if defined(DUK_USE_64BIT_OPS)
- if (!(sizeof(duk_int64_t) == 8 &&
- sizeof(duk_uint64_t) == 8)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: duk_(u)int64_t size");
- }
-#endif
-
- if (!(sizeof(duk_size_t) >= sizeof(duk_uint_t))) {
- /* Some internal code now assumes that all duk_uint_t values
- * can be expressed with a duk_size_t.
- */
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: duk_size_t is smaller than duk_uint_t");
- }
- if (!(sizeof(duk_int_t) >= 4)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: duk_int_t is not 32 bits");
- }
-}
-
-/*
- * Packed tval sanity
- */
-
-DUK_LOCAL void duk__selftest_packed_tval(void) {
-#if defined(DUK_USE_PACKED_TVAL)
- if (sizeof(void *) > 4) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: packed duk_tval in use but sizeof(void *) > 4");
- }
-#endif
-}
-
-/*
- * Two's complement arithmetic.
- */
-
-DUK_LOCAL void duk__selftest_twos_complement(void) {
- volatile int test;
- test = -1;
-
- /* Note that byte order doesn't affect this test: all bytes in
- * 'test' will be 0xFF for two's complement.
- */
- if (((volatile duk_uint8_t *) &test)[0] != (duk_uint8_t) 0xff) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: two's complement arithmetic");
- }
-}
-
-/*
- * Byte order. Important to self check, because on some exotic platforms
- * there is no actual detection but rather assumption based on platform
- * defines.
- */
-
-DUK_LOCAL void duk__selftest_byte_order(void) {
- duk__test_u32_union u1;
- duk__test_double_union u2;
-
- /*
- * >>> struct.pack('>d', 102030405060).encode('hex')
- * '4237c17c6dc40000'
- */
-#if defined(DUK_USE_INTEGER_LE)
- u1.c[0] = 0xef; u1.c[1] = 0xbe; u1.c[2] = 0xad; u1.c[3] = 0xde;
-#elif defined(DUK_USE_INTEGER_ME)
-#error integer mixed endian not supported now
-#elif defined(DUK_USE_INTEGER_BE)
- u1.c[0] = 0xde; u1.c[1] = 0xad; u1.c[2] = 0xbe; u1.c[3] = 0xef;
-#else
-#error unknown integer endianness
-#endif
-
-#if defined(DUK_USE_DOUBLE_LE)
- u2.c[0] = 0x00; u2.c[1] = 0x00; u2.c[2] = 0xc4; u2.c[3] = 0x6d;
- u2.c[4] = 0x7c; u2.c[5] = 0xc1; u2.c[6] = 0x37; u2.c[7] = 0x42;
-#elif defined(DUK_USE_DOUBLE_ME)
- u2.c[0] = 0x7c; u2.c[1] = 0xc1; u2.c[2] = 0x37; u2.c[3] = 0x42;
- u2.c[4] = 0x00; u2.c[5] = 0x00; u2.c[6] = 0xc4; u2.c[7] = 0x6d;
-#elif defined(DUK_USE_DOUBLE_BE)
- u2.c[0] = 0x42; u2.c[1] = 0x37; u2.c[2] = 0xc1; u2.c[3] = 0x7c;
- u2.c[4] = 0x6d; u2.c[5] = 0xc4; u2.c[6] = 0x00; u2.c[7] = 0x00;
-#else
-#error unknown double endianness
-#endif
-
- if (u1.i != (duk_uint32_t) 0xdeadbeefUL) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: duk_uint32_t byte order");
- }
-
- if (u2.d != (double) 102030405060.0) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double byte order");
- }
-}
-
-/*
- * DUK_BSWAP macros
- */
-
-DUK_LOCAL void duk__selftest_bswap_macros(void) {
- duk_uint32_t x32;
- duk_uint16_t x16;
- duk_double_union du;
- duk_double_t du_diff;
-
- x16 = 0xbeefUL;
- x16 = DUK_BSWAP16(x16);
- if (x16 != (duk_uint16_t) 0xefbeUL) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: DUK_BSWAP16");
- }
-
- x32 = 0xdeadbeefUL;
- x32 = DUK_BSWAP32(x32);
- if (x32 != (duk_uint32_t) 0xefbeaddeUL) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: DUK_BSWAP32");
- }
-
- /* >>> struct.unpack('>d', '4000112233445566'.decode('hex'))
- * (2.008366013071895,)
- */
-
- du.uc[0] = 0x40; du.uc[1] = 0x00; du.uc[2] = 0x11; du.uc[3] = 0x22;
- du.uc[4] = 0x33; du.uc[5] = 0x44; du.uc[6] = 0x55; du.uc[7] = 0x66;
- DUK_DBLUNION_DOUBLE_NTOH(&du);
- du_diff = du.d - 2.008366013071895;
-#if 0
- DUK_FPRINTF(DUK_STDERR, "du_diff: %lg\n", (double) du_diff);
-#endif
- if (du_diff > 1e-15) {
- /* Allow very small lenience because some compilers won't parse
- * exact IEEE double constants (happened in matrix testing with
- * Linux gcc-4.8 -m32 at least).
- */
-#if 0
- DUK_FPRINTF(DUK_STDERR, "Result of DUK_DBLUNION_DOUBLE_NTOH: %02x %02x %02x %02x %02x %02x %02x %02x\n",
- (unsigned int) du.uc[0], (unsigned int) du.uc[1],
- (unsigned int) du.uc[2], (unsigned int) du.uc[3],
- (unsigned int) du.uc[4], (unsigned int) du.uc[5],
- (unsigned int) du.uc[6], (unsigned int) du.uc[7]);
-#endif
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: DUK_DBLUNION_DOUBLE_NTOH");
- }
-}
-
-/*
- * Basic double / byte union memory layout.
- */
-
-DUK_LOCAL void duk__selftest_double_union_size(void) {
- if (sizeof(duk__test_double_union) != 8) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: invalid union size");
- }
-}
-
-/*
- * Union aliasing, see misc/clang_aliasing.c.
- */
-
-DUK_LOCAL void duk__selftest_double_aliasing(void) {
- duk__test_double_union a, b;
-
- /* This testcase fails when Emscripten-generated code runs on Firefox.
- * It's not an issue because the failure should only affect packed
- * duk_tval representation, which is not used with Emscripten.
- */
-#if !defined(DUK_USE_PACKED_TVAL)
- DUK_D(DUK_DPRINT("skip double aliasing self test when duk_tval is not packed"));
- return;
-#endif
-
- /* Test signaling NaN and alias assignment in all endianness combinations.
- */
-
- /* little endian */
- a.c[0] = 0x11; a.c[1] = 0x22; a.c[2] = 0x33; a.c[3] = 0x44;
- a.c[4] = 0x00; a.c[5] = 0x00; a.c[6] = 0xf1; a.c[7] = 0xff;
- b = a;
- DUK__DBLUNION_CMP_TRUE(&a, &b);
-
- /* big endian */
- a.c[0] = 0xff; a.c[1] = 0xf1; a.c[2] = 0x00; a.c[3] = 0x00;
- a.c[4] = 0x44; a.c[5] = 0x33; a.c[6] = 0x22; a.c[7] = 0x11;
- b = a;
- DUK__DBLUNION_CMP_TRUE(&a, &b);
-
- /* mixed endian */
- a.c[0] = 0x00; a.c[1] = 0x00; a.c[2] = 0xf1; a.c[3] = 0xff;
- a.c[4] = 0x11; a.c[5] = 0x22; a.c[6] = 0x33; a.c[7] = 0x44;
- b = a;
- DUK__DBLUNION_CMP_TRUE(&a, &b);
-}
-
-/*
- * Zero sign, see misc/tcc_zerosign2.c.
- */
-
-DUK_LOCAL void duk__selftest_double_zero_sign(void) {
- duk__test_double_union a, b;
-
- a.d = 0.0;
- b.d = -a.d;
- DUK__DBLUNION_CMP_FALSE(&a, &b);
-}
-
-/*
- * Struct size/alignment if platform requires it
- *
- * There are some compiler specific struct padding pragmas etc in use, this
- * selftest ensures they're correctly detected and used.
- */
-
-DUK_LOCAL void duk__selftest_struct_align(void) {
-#if (DUK_USE_ALIGN_BY == 4)
- if ((sizeof(duk_hbuffer_fixed) % 4) != 0) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: sizeof(duk_hbuffer_fixed) not aligned to 4");
- }
-#elif (DUK_USE_ALIGN_BY == 8)
- if ((sizeof(duk_hbuffer_fixed) % 8) != 0) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: sizeof(duk_hbuffer_fixed) not aligned to 8");
- }
-#elif (DUK_USE_ALIGN_BY == 1)
- /* no check */
-#else
-#error invalid DUK_USE_ALIGN_BY
-#endif
-}
-
-/*
- * 64-bit arithmetic
- *
- * There are some platforms/compilers where 64-bit types are available
- * but don't work correctly. Test for known cases.
- */
-
-DUK_LOCAL void duk__selftest_64bit_arithmetic(void) {
-#if defined(DUK_USE_64BIT_OPS)
- volatile duk_int64_t i;
- volatile duk_double_t d;
-
- /* Catch a double-to-int64 cast issue encountered in practice. */
- d = 2147483648.0;
- i = (duk_int64_t) d;
- if (i != 0x80000000LL) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: casting 2147483648.0 to duk_int64_t failed");
- }
-#else
- /* nop */
-#endif
-}
-
-/*
- * Casting
- */
-
-DUK_LOCAL void duk__selftest_cast_double_to_small_uint(void) {
- /*
- * https://github.com/svaarala/duktape/issues/127#issuecomment-77863473
- */
-
- duk_double_t d1, d2;
- duk_small_uint_t u;
-
- duk_double_t d1v, d2v;
- duk_small_uint_t uv;
-
- /* Test without volatiles */
-
- d1 = 1.0;
- u = (duk_small_uint_t) d1;
- d2 = (duk_double_t) u;
-
- if (!(d1 == 1.0 && u == 1 && d2 == 1.0 && d1 == d2)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed");
- }
-
- /* Same test with volatiles */
-
- d1v = 1.0;
- uv = (duk_small_uint_t) d1v;
- d2v = (duk_double_t) uv;
-
- if (!(d1v == 1.0 && uv == 1 && d2v == 1.0 && d1v == d2v)) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_small_uint_t cast failed");
- }
-}
-
-DUK_LOCAL void duk__selftest_cast_double_to_uint32(void) {
- /*
- * This test fails on an exotic ARM target; double-to-uint
- * cast is incorrectly clamped to -signed- int highest value.
- *
- * https://github.com/svaarala/duktape/issues/336
- */
-
- duk_double_t dv;
- duk_uint32_t uv;
-
- dv = 3735928559.0; /* 0xdeadbeef in decimal */
- uv = (duk_uint32_t) dv;
-
- if (uv != 0xdeadbeefUL) {
- DUK_PANIC(DUK_ERR_INTERNAL_ERROR, "self test failed: double to duk_uint32_t cast failed");
- }
-}
-
-/*
- * Self test main
- */
-
-DUK_INTERNAL void duk_selftest_run_tests(void) {
- duk__selftest_types();
- duk__selftest_packed_tval();
- duk__selftest_twos_complement();
- duk__selftest_byte_order();
- duk__selftest_bswap_macros();
- duk__selftest_double_union_size();
- duk__selftest_double_aliasing();
- duk__selftest_double_zero_sign();
- duk__selftest_struct_align();
- duk__selftest_64bit_arithmetic();
- duk__selftest_cast_double_to_small_uint();
- duk__selftest_cast_double_to_uint32();
-}
-
-#undef DUK__DBLUNION_CMP_TRUE
-#undef DUK__DBLUNION_CMP_FALSE
-
-#endif /* DUK_USE_SELF_TESTS */
-/* include removed: duk_internal.h */
-#line 2 "duk_tval.c"
-
-#if defined(DUK_USE_FASTINT)
-
-/*
- * Manually optimized double-to-fastint downgrade check.
- *
- * This check has a large impact on performance, especially for fastint
- * slow paths, so must be changed carefully. The code should probably be
- * optimized for the case where the result does not fit into a fastint,
- * to minimize the penalty for "slow path code" dealing with fractions etc.
- *
- * At least on one tested soft float ARM platform double-to-int64 coercion
- * is very slow (and sometimes produces incorrect results, see self tests).
- * This algorithm combines a fastint compatibility check and extracting the
- * integer value from an IEEE double for setting the tagged fastint. For
- * other platforms a more naive approach might be better.
- *
- * See doc/fastint.rst for details.
- */
-
-DUK_INTERNAL DUK_ALWAYS_INLINE void duk_tval_set_number_chkfast(duk_tval *tv, duk_double_t x) {
- duk_double_union du;
- duk_int64_t i;
- duk_small_int_t expt;
- duk_small_int_t shift;
-
- /* XXX: optimize for packed duk_tval directly? */
-
- du.d = x;
- i = (duk_int64_t) DUK_DBLUNION_GET_INT64(&du);
- expt = (duk_small_int_t) ((i >> 52) & 0x07ff);
- shift = expt - 1023;
-
- if (shift >= 0 && shift <= 46) { /* exponents 1023 to 1069 */
- duk_int64_t t;
-
- if (((0x000fffffffffffffLL >> shift) & i) == 0) {
- t = i | 0x0010000000000000LL; /* implicit leading one */
- t = t & 0x001fffffffffffffLL;
- t = t >> (52 - shift);
- if (i < 0) {
- t = -t;
- }
- DUK_TVAL_SET_FASTINT(tv, t);
- return;
- }
- } else if (shift == -1023) { /* exponent 0 */
- if (i >= 0 && (i & 0x000fffffffffffffLL) == 0) {
- /* Note: reject negative zero. */
- DUK_TVAL_SET_FASTINT(tv, (duk_int64_t) 0);
- return;
- }
- } else if (shift == 47) { /* exponent 1070 */
- if (i < 0 && (i & 0x000fffffffffffffLL) == 0) {
- DUK_TVAL_SET_FASTINT(tv, (duk_int64_t) DUK_FASTINT_MIN);
- return;
- }
- }
-
- DUK_TVAL_SET_DOUBLE(tv, x);
- return;
-}
-
-/*
- * Manually optimized number-to-double conversion
- */
-
-#if defined(DUK_USE_FASTINT) && defined(DUK_USE_PACKED_TVAL)
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_packed(duk_tval *tv) {
- duk_double_union du;
- duk_uint64_t t;
-
- t = (duk_uint64_t) DUK_DBLUNION_GET_UINT64(tv);
- if ((t >> 48) != DUK_TAG_FASTINT) {
- return tv->d;
- } else if (t & 0x0000800000000000ULL) {
- t = (duk_uint64_t) (-((duk_int64_t) t)); /* avoid unary minus on unsigned */
- t = t & 0x0000ffffffffffffULL; /* negative */
- t |= 0xc330000000000000ULL;
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d + 4503599627370496.0; /* 1 << 52 */
- } else if (t != 0) {
- t &= 0x0000ffffffffffffULL; /* positive */
- t |= 0x4330000000000000ULL;
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d - 4503599627370496.0; /* 1 << 52 */
- } else {
- return 0.0; /* zero */
- }
-}
-#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */
-
-#if 0 /* unused */
-#if defined(DUK_USE_FASTINT) && !defined(DUK_USE_PACKED_TVAL)
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_unpacked(duk_tval *tv) {
- duk_double_union du;
- duk_uint64_t t;
-
- DUK_ASSERT(tv->t == DUK__TAG_NUMBER || tv->t == DUK_TAG_FASTINT);
-
- if (tv->t == DUK_TAG_FASTINT) {
- if (tv->v.fi >= 0) {
- t = 0x4330000000000000ULL | (duk_uint64_t) tv->v.fi;
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d - 4503599627370496.0; /* 1 << 52 */
- } else {
- t = 0xc330000000000000ULL | (duk_uint64_t) (-tv->v.fi);
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d + 4503599627370496.0; /* 1 << 52 */
- }
- } else {
- return tv->v.d;
- }
-}
-#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */
-#endif /* 0 */
-
-#if defined(DUK_USE_FASTINT) && !defined(DUK_USE_PACKED_TVAL)
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_tval_get_number_unpacked_fastint(duk_tval *tv) {
- duk_double_union du;
- duk_uint64_t t;
-
- DUK_ASSERT(tv->t == DUK_TAG_FASTINT);
-
- if (tv->v.fi >= 0) {
- t = 0x4330000000000000ULL | (duk_uint64_t) tv->v.fi;
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d - 4503599627370496.0; /* 1 << 52 */
- } else {
- t = 0xc330000000000000ULL | (duk_uint64_t) (-tv->v.fi);
- DUK_DBLUNION_SET_UINT64(&du, t);
- return du.d + 4503599627370496.0; /* 1 << 52 */
- }
-}
-#endif /* DUK_USE_FASTINT && DUK_USE_PACKED_TVAL */
-
-#endif /* DUK_USE_FASTINT */
-#line 1 "duk_unicode_tables.c"
-/*
- * Unicode support tables automatically generated during build.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Unicode tables containing ranges of Unicode characters in a
- * packed format. These tables are used to match non-ASCII
- * characters of complex productions by resorting to a linear
- * range-by-range comparison. This is very slow, but is expected
- * to be very rare in practical Ecmascript source code, and thus
- * compactness is most important.
- *
- * The tables are matched using uni_range_match() and the format
- * is described in src/extract_chars.py.
- */
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/* IdentifierStart production with ASCII excluded */
-/* duk_unicode_ids_noa[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_ids_noa[791] = {
-249,176,176,80,111,7,47,15,47,254,11,197,191,0,72,2,15,115,66,19,57,2,34,2,
-240,66,244,50,247,185,248,234,241,99,8,241,127,58,240,182,47,31,241,191,21,
-18,245,50,15,1,24,27,35,15,2,2,240,239,15,244,156,15,10,241,26,21,6,240,
-101,10,4,15,9,240,159,157,242,100,15,4,8,159,1,98,102,115,19,240,98,98,4,
-52,15,2,14,18,47,0,31,5,85,19,240,98,98,18,18,31,17,50,15,5,47,2,130,34,
-240,98,98,18,68,15,4,15,1,31,21,115,19,240,98,98,18,68,15,16,18,47,1,15,3,
-2,84,34,52,18,2,20,20,36,191,8,15,38,114,34,240,114,146,68,15,12,23,31,21,
-114,34,240,114,146,68,15,18,2,31,1,31,4,114,34,241,147,15,2,15,3,31,10,86,
-240,36,240,130,130,3,111,44,242,2,29,111,44,18,3,18,3,7,50,98,34,2,3,18,50,
-26,3,66,15,7,31,20,15,49,114,241,79,13,79,101,241,191,6,15,2,85,52,4,24,37,
-205,15,3,241,107,241,178,4,255,224,59,35,54,32,35,63,25,35,63,17,35,54,32,
-35,62,47,41,35,63,51,241,127,0,240,47,69,223,254,21,227,240,18,240,166,243,
-180,47,1,194,63,0,240,47,0,240,47,0,194,47,1,242,79,21,5,15,53,244,137,241,
-146,6,243,107,240,223,37,240,227,76,241,207,7,111,42,240,122,242,95,68,15,
-79,241,255,3,111,41,240,238,31,2,241,111,12,241,79,27,43,241,79,93,50,63,0,
-251,15,50,255,224,8,53,63,22,53,55,32,32,32,47,15,63,37,38,32,66,38,67,53,
-92,98,38,246,96,224,240,44,245,112,80,57,32,68,112,32,32,35,42,51,100,80,
-240,63,25,255,233,107,241,242,241,242,247,87,63,3,241,107,242,106,15,2,240,
-122,98,98,98,98,98,98,98,111,66,15,254,12,146,240,184,132,52,95,70,114,47,
-74,35,111,25,79,78,240,63,11,242,127,0,255,224,244,255,240,0,138,143,60,
-255,240,4,11,239,38,255,227,127,243,95,30,63,253,79,0,177,240,111,31,240,
-47,9,159,64,241,152,63,87,51,33,240,9,244,39,34,35,47,7,240,255,36,240,15,
-34,243,5,64,240,15,12,191,7,240,191,13,143,31,240,224,242,47,25,240,146,39,
-240,111,7,64,111,32,32,65,52,48,32,240,162,241,85,53,53,166,38,248,63,19,
-240,255,255,0,26,150,223,7,95,33,255,240,0,255,143,254,2,3,242,227,245,175,
-24,109,70,2,146,194,66,2,18,18,245,207,19,255,224,93,240,79,48,63,38,241,
-171,246,100,47,119,241,111,10,127,10,207,73,69,53,53,50,241,91,47,10,47,3,
-33,46,61,241,79,107,243,127,37,255,223,13,79,33,242,31,15,240,63,11,242,
-127,14,63,20,87,36,241,207,142,255,226,86,83,2,241,194,20,3,240,127,156,
-240,107,240,175,184,15,1,50,34,240,191,30,240,223,117,242,107,240,107,240,
-63,127,243,159,254,42,239,37,243,223,29,255,238,68,255,226,97,248,63,83,
-255,234,145,255,227,33,255,240,2,44,95,254,18,191,255,0,52,187,31,255,0,18,
-242,244,82,243,114,19,3,19,50,178,2,98,243,18,51,114,98,240,194,50,66,4,98,
-255,224,70,63,9,47,9,47,15,47,9,47,15,47,9,47,15,47,9,47,15,47,9,39,255,
-240,1,114,143,255,0,149,201,241,191,254,242,124,252,239,255,0,46,214,255,
-225,16,0,
-};
-#else
-/* IdentifierStart production with ASCII and non-BMP excluded */
-/* duk_unicode_ids_noabmp[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_ids_noabmp[611] = {
-249,176,176,80,111,7,47,15,47,254,11,197,191,0,72,2,15,115,66,19,57,2,34,2,
-240,66,244,50,247,185,248,234,241,99,8,241,127,58,240,182,47,31,241,191,21,
-18,245,50,15,1,24,27,35,15,2,2,240,239,15,244,156,15,10,241,26,21,6,240,
-101,10,4,15,9,240,159,157,242,100,15,4,8,159,1,98,102,115,19,240,98,98,4,
-52,15,2,14,18,47,0,31,5,85,19,240,98,98,18,18,31,17,50,15,5,47,2,130,34,
-240,98,98,18,68,15,4,15,1,31,21,115,19,240,98,98,18,68,15,16,18,47,1,15,3,
-2,84,34,52,18,2,20,20,36,191,8,15,38,114,34,240,114,146,68,15,12,23,31,21,
-114,34,240,114,146,68,15,18,2,31,1,31,4,114,34,241,147,15,2,15,3,31,10,86,
-240,36,240,130,130,3,111,44,242,2,29,111,44,18,3,18,3,7,50,98,34,2,3,18,50,
-26,3,66,15,7,31,20,15,49,114,241,79,13,79,101,241,191,6,15,2,85,52,4,24,37,
-205,15,3,241,107,241,178,4,255,224,59,35,54,32,35,63,25,35,63,17,35,54,32,
-35,62,47,41,35,63,51,241,127,0,240,47,69,223,254,21,227,240,18,240,166,243,
-180,47,1,194,63,0,240,47,0,240,47,0,194,47,1,242,79,21,5,15,53,244,137,241,
-146,6,243,107,240,223,37,240,227,76,241,207,7,111,42,240,122,242,95,68,15,
-79,241,255,3,111,41,240,238,31,2,241,111,12,241,79,27,43,241,79,93,50,63,0,
-251,15,50,255,224,8,53,63,22,53,55,32,32,32,47,15,63,37,38,32,66,38,67,53,
-92,98,38,246,96,224,240,44,245,112,80,57,32,68,112,32,32,35,42,51,100,80,
-240,63,25,255,233,107,241,242,241,242,247,87,63,3,241,107,242,106,15,2,240,
-122,98,98,98,98,98,98,98,111,66,15,254,12,146,240,184,132,52,95,70,114,47,
-74,35,111,25,79,78,240,63,11,242,127,0,255,224,244,255,240,0,138,143,60,
-255,240,4,11,239,38,255,227,127,243,95,30,63,253,79,0,177,240,111,31,240,
-47,9,159,64,241,152,63,87,51,33,240,9,244,39,34,35,47,7,240,255,36,240,15,
-34,243,5,64,240,15,12,191,7,240,191,13,143,31,240,224,242,47,25,240,146,39,
-240,111,7,64,111,32,32,65,52,48,32,240,162,241,85,53,53,166,38,248,63,19,
-240,255,255,0,26,150,223,7,95,33,255,240,0,255,143,254,2,3,242,227,245,175,
-24,109,70,2,146,194,66,2,18,18,245,207,19,255,224,93,240,79,48,63,38,241,
-171,246,100,47,119,241,111,10,127,10,207,73,69,53,53,50,0,
-};
-#endif
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/* IdentifierStart production with Letter and ASCII excluded */
-/* duk_unicode_ids_m_let_noa[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_ids_m_let_noa[42] = {
-255,240,0,94,18,255,233,99,241,51,63,254,215,32,240,184,240,2,255,240,6,89,
-249,255,240,4,148,79,37,255,224,192,9,15,120,79,255,0,15,30,245,48,
-};
-#else
-/* IdentifierStart production with Letter, ASCII, and non-BMP excluded */
-/* duk_unicode_ids_m_let_noabmp[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_ids_m_let_noabmp[24] = {
-255,240,0,94,18,255,233,99,241,51,63,254,215,32,240,184,240,2,255,240,6,89,
-249,0,
-};
-#endif
-
-#ifdef DUK_USE_SOURCE_NONBMP
-/* IdentifierPart production with IdentifierStart and ASCII excluded */
-/* duk_unicode_idp_m_ids_noa[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_idp_m_ids_noa[397] = {
-255,225,243,246,15,254,0,116,255,191,29,32,33,33,32,243,170,242,47,15,112,
-245,118,53,49,35,57,240,144,241,15,11,244,218,240,25,241,56,241,67,40,34,
-36,241,210,249,99,242,130,47,2,38,177,57,240,50,242,160,38,49,50,160,177,
-57,240,50,242,160,36,81,50,64,240,107,64,194,242,160,39,34,34,240,97,57,
-240,50,242,160,38,49,50,145,177,57,240,64,242,212,66,35,160,240,9,240,50,
-242,198,34,35,129,193,57,240,65,242,160,38,34,35,129,193,57,240,65,242,198,
-34,35,160,177,57,240,65,243,128,85,32,39,240,65,242,240,54,215,41,244,144,
-53,33,197,57,243,1,121,192,32,32,81,242,63,4,33,106,47,20,160,245,111,4,41,
-211,82,34,54,67,235,46,255,225,179,47,254,42,98,240,242,240,241,241,1,243,
-79,14,160,57,241,50,57,248,16,246,139,91,185,245,47,1,129,121,242,244,242,
-185,47,13,58,121,245,132,242,31,1,201,240,56,210,241,9,105,241,237,242,47,
-4,153,121,246,130,47,5,80,80,251,255,23,240,115,255,225,0,31,35,31,5,15,
-109,197,4,191,254,175,34,247,240,245,47,16,255,225,30,95,91,31,255,0,100,
-121,159,55,13,31,100,31,254,0,64,64,80,240,148,244,161,242,79,1,201,127,2,
-240,9,240,231,240,188,241,227,242,29,240,25,244,29,208,145,57,241,48,242,
-96,34,49,97,32,255,224,21,114,19,159,255,0,62,24,15,254,29,95,0,240,38,209,
-240,162,251,41,241,112,255,225,177,15,254,25,105,255,228,75,34,22,63,26,37,
-15,254,75,66,242,126,241,25,240,34,241,250,255,240,10,249,228,69,151,54,
-241,3,248,98,255,228,125,242,47,255,12,23,244,254,0,
-};
-#else
-/* IdentifierPart production with IdentifierStart, ASCII, and non-BMP excluded */
-/* duk_unicode_idp_m_ids_noabmp[] */
-/*
- * Automatically generated by extract_chars.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_idp_m_ids_noabmp[348] = {
-255,225,243,246,15,254,0,116,255,191,29,32,33,33,32,243,170,242,47,15,112,
-245,118,53,49,35,57,240,144,241,15,11,244,218,240,25,241,56,241,67,40,34,
-36,241,210,249,99,242,130,47,2,38,177,57,240,50,242,160,38,49,50,160,177,
-57,240,50,242,160,36,81,50,64,240,107,64,194,242,160,39,34,34,240,97,57,
-240,50,242,160,38,49,50,145,177,57,240,64,242,212,66,35,160,240,9,240,50,
-242,198,34,35,129,193,57,240,65,242,160,38,34,35,129,193,57,240,65,242,198,
-34,35,160,177,57,240,65,243,128,85,32,39,240,65,242,240,54,215,41,244,144,
-53,33,197,57,243,1,121,192,32,32,81,242,63,4,33,106,47,20,160,245,111,4,41,
-211,82,34,54,67,235,46,255,225,179,47,254,42,98,240,242,240,241,241,1,243,
-79,14,160,57,241,50,57,248,16,246,139,91,185,245,47,1,129,121,242,244,242,
-185,47,13,58,121,245,132,242,31,1,201,240,56,210,241,9,105,241,237,242,47,
-4,153,121,246,130,47,5,80,80,251,255,23,240,115,255,225,0,31,35,31,5,15,
-109,197,4,191,254,175,34,247,240,245,47,16,255,225,30,95,91,31,255,0,100,
-121,159,55,13,31,100,31,254,0,64,64,80,240,148,244,161,242,79,1,201,127,2,
-240,9,240,231,240,188,241,227,242,29,240,25,244,29,208,145,57,241,48,242,
-96,34,49,97,32,255,224,21,114,19,159,255,0,62,24,15,254,29,95,0,240,38,209,
-240,162,251,41,241,112,0,
-};
-#endif
-
-/*
- * Case conversion tables generated using src/extract_caseconv.py.
- */
-
-/* duk_unicode_caseconv_uc[] */
-/* duk_unicode_caseconv_lc[] */
-
-/*
- * Automatically generated by extract_caseconv.py, do not edit!
- */
-
-const duk_uint8_t duk_unicode_caseconv_uc[1288] = {
-132,3,128,3,0,184,7,192,6,192,112,35,242,199,224,64,74,192,49,32,128,162,
-128,108,65,1,189,129,254,131,3,173,3,136,6,7,98,7,34,68,15,12,14,140,72,30,
-104,28,112,32,67,0,65,4,0,138,0,128,4,1,88,65,76,83,15,128,15,132,8,31,16,
-31,24,12,62,64,62,80,32,124,192,124,224,64,250,0,250,64,97,246,1,246,129,3,
-238,3,247,64,135,220,135,242,2,15,187,15,237,2,31,120,31,248,4,62,244,63,
-212,8,125,240,127,232,16,253,128,253,192,33,253,1,253,128,67,252,3,253,0,
-136,92,8,88,8,18,104,18,91,26,44,48,44,0,94,90,0,33,64,155,253,7,252,132,
-212,0,32,32,32,6,0,76,192,76,129,128,157,0,156,136,1,75,1,74,46,2,244,2,
-242,12,6,12,6,8,16,13,8,13,0,48,27,64,27,48,64,57,192,57,162,0,119,192,119,
-132,128,252,128,252,20,2,35,2,34,18,4,142,4,140,20,13,196,13,192,16,30,200,
-30,192,192,70,16,70,2,32,145,96,145,70,193,48,129,48,67,130,104,130,104,44,
-30,1,30,0,150,61,66,61,64,192,125,68,125,100,33,99,65,99,56,50,200,18,200,
-6,69,157,133,157,96,169,144,105,144,11,211,64,211,64,12,167,35,167,34,15,
-78,103,78,100,126,157,234,157,228,21,59,253,59,240,90,122,26,122,0,163,128,
-214,128,214,2,1,197,1,196,6,3,140,3,136,12,7,200,7,196,16,20,0,13,48,32,63,
-128,63,112,69,142,101,142,64,130,1,136,1,135,4,3,114,3,112,8,26,120,202,
-120,176,65,1,30,1,29,130,2,105,1,150,5,255,96,22,160,115,128,31,224,47,0,
-38,32,9,32,47,224,10,96,48,0,72,96,50,64,50,32,50,160,62,192,51,32,51,0,51,
-64,71,160,51,192,68,0,53,0,52,224,55,224,62,224,59,160,49,192,62,96,62,32,
-74,5,141,224,74,37,141,160,74,69,142,0,74,96,48,32,74,128,48,192,75,32,49,
-224,75,96,50,0,76,0,50,96,76,96,50,128,76,180,241,160,77,0,50,224,77,101,
-140,64,78,37,141,192,78,64,51,160,78,160,51,224,79,165,140,128,81,0,53,192,
-81,32,72,128,81,128,72,160,82,64,54,224,104,160,115,32,110,224,110,192,117,
-128,112,192,120,64,116,96,121,128,113,128,122,0,114,64,122,32,115,0,122,
-160,116,192,122,192,116,0,122,224,121,224,126,0,115,64,126,32,116,32,126,
-64,127,32,126,160,114,160,153,224,152,3,175,52,239,163,175,165,140,99,211,
-99,204,3,247,192,115,35,252,163,253,132,41,196,38,68,48,132,48,101,140,37,
-140,5,140,160,71,69,140,192,71,217,128,55,224,5,48,5,48,20,152,10,240,1,56,
-7,194,0,74,3,12,3,144,192,230,64,194,0,192,64,236,48,58,80,48,128,48,16,88,
-120,20,212,21,72,122,90,0,72,3,49,30,151,128,21,0,194,7,166,32,5,112,48,
-161,233,152,1,100,12,40,122,106,0,65,2,190,31,80,128,233,64,196,199,212,
-176,58,80,49,48,48,1,245,76,14,148,12,76,12,4,125,91,3,165,3,19,3,66,31,
-128,135,194,0,230,71,224,97,240,144,57,145,248,40,124,40,14,100,126,14,31,
-11,3,153,31,132,135,195,0,230,71,225,97,240,208,57,145,248,104,124,56,14,
-100,126,30,31,15,3,153,31,136,135,194,0,230,71,226,97,240,144,57,145,248,
-168,124,40,14,100,126,46,31,11,3,153,31,140,135,195,0,230,71,227,97,240,
-208,57,145,248,232,124,56,14,100,126,62,31,15,3,153,31,144,135,202,0,230,
-71,228,97,242,144,57,145,249,40,124,168,14,100,126,78,31,43,3,153,31,148,
-135,203,0,230,71,229,97,242,208,57,145,249,104,124,184,14,100,126,94,31,47,
-3,153,31,152,135,202,0,230,71,230,97,242,144,57,145,249,168,124,168,14,100,
-126,110,31,43,3,153,31,156,135,203,0,230,71,231,97,242,208,57,145,249,232,
-124,184,14,100,126,126,31,47,3,153,31,160,135,218,0,230,71,232,97,246,144,
-57,145,250,40,125,168,14,100,126,142,31,107,3,153,31,164,135,219,0,230,71,
-233,97,246,208,57,145,250,104,125,184,14,100,126,158,31,111,3,153,31,168,
-135,218,0,230,71,234,97,246,144,57,145,250,168,125,168,14,100,126,174,31,
-107,3,153,31,172,135,219,0,230,71,235,97,246,208,57,145,250,232,125,184,14,
-100,126,190,31,111,3,153,31,178,135,238,128,230,71,236,224,57,16,57,145,
-251,72,14,24,14,100,126,218,3,145,3,66,31,183,192,228,64,208,128,230,71,
-239,32,57,16,57,145,252,40,127,40,14,100,127,14,3,151,3,153,31,196,128,226,
-64,230,71,241,160,57,112,52,33,252,124,14,92,13,8,14,100,127,50,3,151,3,
-153,31,210,192,230,64,194,0,192,7,244,240,57,144,48,128,48,17,253,104,14,
-100,13,8,127,95,3,153,3,8,3,66,31,226,192,233,64,194,0,192,7,248,240,58,80,
-48,128,48,17,254,72,14,132,12,76,127,154,3,165,3,66,31,231,192,233,64,194,
-0,208,135,252,161,255,160,57,145,255,56,14,164,14,100,127,210,3,143,3,153,
-31,246,128,234,64,208,135,253,240,58,144,52,32,57,145,255,200,14,164,14,
-103,236,2,0,70,0,70,251,1,128,17,128,18,126,192,160,4,96,4,207,176,60,1,24,
-1,24,1,39,236,19,0,70,0,70,0,76,251,5,128,20,192,21,62,193,160,5,48,5,79,
-177,56,21,16,21,27,236,82,5,68,5,53,251,21,129,81,1,78,254,197,160,84,224,
-84,111,177,120,21,16,20,244,
-};
-const duk_uint8_t duk_unicode_caseconv_lc[616] = {
-144,3,0,3,128,184,6,192,7,192,112,24,144,37,96,64,54,32,81,64,128,226,0,
-235,65,129,199,1,230,130,3,145,3,177,34,7,70,7,134,36,15,244,13,236,24,32,
-0,34,129,0,65,0,67,4,0,166,32,172,41,132,40,11,64,19,15,132,15,128,8,31,24,
-31,16,12,62,80,62,64,32,124,224,124,192,64,250,64,250,0,97,246,129,246,1,3,
-241,3,240,2,7,230,7,228,4,15,212,15,208,8,31,184,31,176,4,63,116,62,224,8,
-127,32,125,200,32,254,192,254,128,33,253,161,247,96,67,253,3,252,0,135,250,
-135,222,129,15,252,15,188,2,31,250,31,124,4,66,192,66,224,64,146,216,147,
-64,209,96,1,97,130,242,199,224,35,240,95,228,63,232,38,161,1,0,1,1,48,2,
-100,2,102,12,4,228,4,232,64,10,80,10,89,112,23,144,23,160,96,48,64,48,96,
-128,104,0,104,65,128,217,128,218,2,1,203,1,204,18,3,188,3,190,36,7,200,7,
-204,16,15,192,15,201,64,34,32,34,49,32,72,192,72,225,64,220,0,220,65,1,236,
-1,236,140,4,96,4,97,34,9,20,9,22,108,19,4,19,8,56,38,128,38,138,193,224,1,
-224,25,99,212,3,212,44,7,214,71,212,66,22,51,150,52,3,44,128,44,129,100,89,
-214,89,216,10,153,2,153,4,189,52,5,52,8,202,114,42,114,48,244,230,84,230,
-103,233,222,105,222,129,83,191,83,191,133,167,160,167,161,10,48,13,48,20,0,
-32,26,192,26,208,64,56,128,56,192,192,113,64,113,129,1,251,129,252,2,44,
-114,44,115,4,16,12,56,12,64,32,27,128,27,144,64,211,197,211,198,2,8,6,88,9,
-164,16,17,216,17,224,47,245,1,120,0,255,1,129,2,83,1,134,2,84,1,142,1,221,
-1,143,2,89,1,144,2,91,1,145,1,146,1,147,2,96,1,148,2,99,1,151,2,104,1,152,
-1,153,1,157,2,114,1,159,2,117,1,167,1,168,1,174,2,136,1,183,2,146,1,241,1,
-243,1,246,1,149,1,247,1,191,2,32,1,158,2,58,44,101,2,61,1,154,2,62,44,102,
-2,67,1,128,2,68,2,137,2,69,2,140,3,118,3,119,3,134,3,172,3,140,3,204,3,207,
-3,215,3,244,3,184,3,249,3,242,4,192,4,207,30,158,0,223,31,188,31,179,31,
-204,31,195,31,236,31,229,31,252,31,243,33,38,3,201,33,42,0,107,33,43,0,229,
-33,50,33,78,33,131,33,132,44,96,44,97,44,98,2,107,44,99,29,125,44,100,2,
-125,44,109,2,81,44,110,2,113,44,111,2,80,44,112,2,82,167,125,29,121,167,
-141,2,101,2,2,97,0,52,129,131,128,
-};
-
-#if defined(DUK_USE_REGEXP_CANON_WORKAROUND)
-/*
- * Automatically generated by extract_caseconv.py, do not edit!
- */
-
-const duk_uint16_t duk_unicode_re_canon_lookup[65536] = {
-0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,
-28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,49,50,51,52,
-53,54,55,56,57,58,59,60,61,62,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,
-78,79,80,81,82,83,84,85,86,87,88,89,90,91,92,93,94,95,96,65,66,67,68,69,70,
-71,72,73,74,75,76,77,78,79,80,81,82,83,84,85,86,87,88,89,90,123,124,125,
-126,127,128,129,130,131,132,133,134,135,136,137,138,139,140,141,142,143,
-144,145,146,147,148,149,150,151,152,153,154,155,156,157,158,159,160,161,
-162,163,164,165,166,167,168,169,170,171,172,173,174,175,176,177,178,179,
-180,924,182,183,184,185,186,187,188,189,190,191,192,193,194,195,196,197,
-198,199,200,201,202,203,204,205,206,207,208,209,210,211,212,213,214,215,
-216,217,218,219,220,221,222,223,192,193,194,195,196,197,198,199,200,201,
-202,203,204,205,206,207,208,209,210,211,212,213,214,247,216,217,218,219,
-220,221,222,376,256,256,258,258,260,260,262,262,264,264,266,266,268,268,
-270,270,272,272,274,274,276,276,278,278,280,280,282,282,284,284,286,286,
-288,288,290,290,292,292,294,294,296,296,298,298,300,300,302,302,304,305,
-306,306,308,308,310,310,312,313,313,315,315,317,317,319,319,321,321,323,
-323,325,325,327,327,329,330,330,332,332,334,334,336,336,338,338,340,340,
-342,342,344,344,346,346,348,348,350,350,352,352,354,354,356,356,358,358,
-360,360,362,362,364,364,366,366,368,368,370,370,372,372,374,374,376,377,
-377,379,379,381,381,383,579,385,386,386,388,388,390,391,391,393,394,395,
-395,397,398,399,400,401,401,403,404,502,406,407,408,408,573,411,412,413,
-544,415,416,416,418,418,420,420,422,423,423,425,426,427,428,428,430,431,
-431,433,434,435,435,437,437,439,440,440,442,443,444,444,446,503,448,449,
-450,451,452,452,452,455,455,455,458,458,458,461,461,463,463,465,465,467,
-467,469,469,471,471,473,473,475,475,398,478,478,480,480,482,482,484,484,
-486,486,488,488,490,490,492,492,494,494,496,497,497,497,500,500,502,503,
-504,504,506,506,508,508,510,510,512,512,514,514,516,516,518,518,520,520,
-522,522,524,524,526,526,528,528,530,530,532,532,534,534,536,536,538,538,
-540,540,542,542,544,545,546,546,548,548,550,550,552,552,554,554,556,556,
-558,558,560,560,562,562,564,565,566,567,568,569,570,571,571,573,574,11390,
-11391,577,577,579,580,581,582,582,584,584,586,586,588,588,590,590,11375,
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-18950,18951,18952,18953,18954,18955,18956,18957,18958,18959,18960,18961,
-18962,18963,18964,18965,18966,18967,18968,18969,18970,18971,18972,18973,
-18974,18975,18976,18977,18978,18979,18980,18981,18982,18983,18984,18985,
-18986,18987,18988,18989,18990,18991,18992,18993,18994,18995,18996,18997,
-18998,18999,19000,19001,19002,19003,19004,19005,19006,19007,19008,19009,
-19010,19011,19012,19013,19014,19015,19016,19017,19018,19019,19020,19021,
-19022,19023,19024,19025,19026,19027,19028,19029,19030,19031,19032,19033,
-19034,19035,19036,19037,19038,19039,19040,19041,19042,19043,19044,19045,
-19046,19047,19048,19049,19050,19051,19052,19053,19054,19055,19056,19057,
-19058,19059,19060,19061,19062,19063,19064,19065,19066,19067,19068,19069,
-19070,19071,19072,19073,19074,19075,19076,19077,19078,19079,19080,19081,
-19082,19083,19084,19085,19086,19087,19088,19089,19090,19091,19092,19093,
-19094,19095,19096,19097,19098,19099,19100,19101,19102,19103,19104,19105,
-19106,19107,19108,19109,19110,19111,19112,19113,19114,19115,19116,19117,
-19118,19119,19120,19121,19122,19123,19124,19125,19126,19127,19128,19129,
-19130,19131,19132,19133,19134,19135,19136,19137,19138,19139,19140,19141,
-19142,19143,19144,19145,19146,19147,19148,19149,19150,19151,19152,19153,
-19154,19155,19156,19157,19158,19159,19160,19161,19162,19163,19164,19165,
-19166,19167,19168,19169,19170,19171,19172,19173,19174,19175,19176,19177,
-19178,19179,19180,19181,19182,19183,19184,19185,19186,19187,19188,19189,
-19190,19191,19192,19193,19194,19195,19196,19197,19198,19199,19200,19201,
-19202,19203,19204,19205,19206,19207,19208,19209,19210,19211,19212,19213,
-19214,19215,19216,19217,19218,19219,19220,19221,19222,19223,19224,19225,
-19226,19227,19228,19229,19230,19231,19232,19233,19234,19235,19236,19237,
-19238,19239,19240,19241,19242,19243,19244,19245,19246,19247,19248,19249,
-19250,19251,19252,19253,19254,19255,19256,19257,19258,19259,19260,19261,
-19262,19263,19264,19265,19266,19267,19268,19269,19270,19271,19272,19273,
-19274,19275,19276,19277,19278,19279,19280,19281,19282,19283,19284,19285,
-19286,19287,19288,19289,19290,19291,19292,19293,19294,19295,19296,19297,
-19298,19299,19300,19301,19302,19303,19304,19305,19306,19307,19308,19309,
-19310,19311,19312,19313,19314,19315,19316,19317,19318,19319,19320,19321,
-19322,19323,19324,19325,19326,19327,19328,19329,19330,19331,19332,19333,
-19334,19335,19336,19337,19338,19339,19340,19341,19342,19343,19344,19345,
-19346,19347,19348,19349,19350,19351,19352,19353,19354,19355,19356,19357,
-19358,19359,19360,19361,19362,19363,19364,19365,19366,19367,19368,19369,
-19370,19371,19372,19373,19374,19375,19376,19377,19378,19379,19380,19381,
-19382,19383,19384,19385,19386,19387,19388,19389,19390,19391,19392,19393,
-19394,19395,19396,19397,19398,19399,19400,19401,19402,19403,19404,19405,
-19406,19407,19408,19409,19410,19411,19412,19413,19414,19415,19416,19417,
-19418,19419,19420,19421,19422,19423,19424,19425,19426,19427,19428,19429,
-19430,19431,19432,19433,19434,19435,19436,19437,19438,19439,19440,19441,
-19442,19443,19444,19445,19446,19447,19448,19449,19450,19451,19452,19453,
-19454,19455,19456,19457,19458,19459,19460,19461,19462,19463,19464,19465,
-19466,19467,19468,19469,19470,19471,19472,19473,19474,19475,19476,19477,
-19478,19479,19480,19481,19482,19483,19484,19485,19486,19487,19488,19489,
-19490,19491,19492,19493,19494,19495,19496,19497,19498,19499,19500,19501,
-19502,19503,19504,19505,19506,19507,19508,19509,19510,19511,19512,19513,
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-19526,19527,19528,19529,19530,19531,19532,19533,19534,19535,19536,19537,
-19538,19539,19540,19541,19542,19543,19544,19545,19546,19547,19548,19549,
-19550,19551,19552,19553,19554,19555,19556,19557,19558,19559,19560,19561,
-19562,19563,19564,19565,19566,19567,19568,19569,19570,19571,19572,19573,
-19574,19575,19576,19577,19578,19579,19580,19581,19582,19583,19584,19585,
-19586,19587,19588,19589,19590,19591,19592,19593,19594,19595,19596,19597,
-19598,19599,19600,19601,19602,19603,19604,19605,19606,19607,19608,19609,
-19610,19611,19612,19613,19614,19615,19616,19617,19618,19619,19620,19621,
-19622,19623,19624,19625,19626,19627,19628,19629,19630,19631,19632,19633,
-19634,19635,19636,19637,19638,19639,19640,19641,19642,19643,19644,19645,
-19646,19647,19648,19649,19650,19651,19652,19653,19654,19655,19656,19657,
-19658,19659,19660,19661,19662,19663,19664,19665,19666,19667,19668,19669,
-19670,19671,19672,19673,19674,19675,19676,19677,19678,19679,19680,19681,
-19682,19683,19684,19685,19686,19687,19688,19689,19690,19691,19692,19693,
-19694,19695,19696,19697,19698,19699,19700,19701,19702,19703,19704,19705,
-19706,19707,19708,19709,19710,19711,19712,19713,19714,19715,19716,19717,
-19718,19719,19720,19721,19722,19723,19724,19725,19726,19727,19728,19729,
-19730,19731,19732,19733,19734,19735,19736,19737,19738,19739,19740,19741,
-19742,19743,19744,19745,19746,19747,19748,19749,19750,19751,19752,19753,
-19754,19755,19756,19757,19758,19759,19760,19761,19762,19763,19764,19765,
-19766,19767,19768,19769,19770,19771,19772,19773,19774,19775,19776,19777,
-19778,19779,19780,19781,19782,19783,19784,19785,19786,19787,19788,19789,
-19790,19791,19792,19793,19794,19795,19796,19797,19798,19799,19800,19801,
-19802,19803,19804,19805,19806,19807,19808,19809,19810,19811,19812,19813,
-19814,19815,19816,19817,19818,19819,19820,19821,19822,19823,19824,19825,
-19826,19827,19828,19829,19830,19831,19832,19833,19834,19835,19836,19837,
-19838,19839,19840,19841,19842,19843,19844,19845,19846,19847,19848,19849,
-19850,19851,19852,19853,19854,19855,19856,19857,19858,19859,19860,19861,
-19862,19863,19864,19865,19866,19867,19868,19869,19870,19871,19872,19873,
-19874,19875,19876,19877,19878,19879,19880,19881,19882,19883,19884,19885,
-19886,19887,19888,19889,19890,19891,19892,19893,19894,19895,19896,19897,
-19898,19899,19900,19901,19902,19903,19904,19905,19906,19907,19908,19909,
-19910,19911,19912,19913,19914,19915,19916,19917,19918,19919,19920,19921,
-19922,19923,19924,19925,19926,19927,19928,19929,19930,19931,19932,19933,
-19934,19935,19936,19937,19938,19939,19940,19941,19942,19943,19944,19945,
-19946,19947,19948,19949,19950,19951,19952,19953,19954,19955,19956,19957,
-19958,19959,19960,19961,19962,19963,19964,19965,19966,19967,19968,19969,
-19970,19971,19972,19973,19974,19975,19976,19977,19978,19979,19980,19981,
-19982,19983,19984,19985,19986,19987,19988,19989,19990,19991,19992,19993,
-19994,19995,19996,19997,19998,19999,20000,20001,20002,20003,20004,20005,
-20006,20007,20008,20009,20010,20011,20012,20013,20014,20015,20016,20017,
-20018,20019,20020,20021,20022,20023,20024,20025,20026,20027,20028,20029,
-20030,20031,20032,20033,20034,20035,20036,20037,20038,20039,20040,20041,
-20042,20043,20044,20045,20046,20047,20048,20049,20050,20051,20052,20053,
-20054,20055,20056,20057,20058,20059,20060,20061,20062,20063,20064,20065,
-20066,20067,20068,20069,20070,20071,20072,20073,20074,20075,20076,20077,
-20078,20079,20080,20081,20082,20083,20084,20085,20086,20087,20088,20089,
-20090,20091,20092,20093,20094,20095,20096,20097,20098,20099,20100,20101,
-20102,20103,20104,20105,20106,20107,20108,20109,20110,20111,20112,20113,
-20114,20115,20116,20117,20118,20119,20120,20121,20122,20123,20124,20125,
-20126,20127,20128,20129,20130,20131,20132,20133,20134,20135,20136,20137,
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-20186,20187,20188,20189,20190,20191,20192,20193,20194,20195,20196,20197,
-20198,20199,20200,20201,20202,20203,20204,20205,20206,20207,20208,20209,
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-20294,20295,20296,20297,20298,20299,20300,20301,20302,20303,20304,20305,
-20306,20307,20308,20309,20310,20311,20312,20313,20314,20315,20316,20317,
-20318,20319,20320,20321,20322,20323,20324,20325,20326,20327,20328,20329,
-20330,20331,20332,20333,20334,20335,20336,20337,20338,20339,20340,20341,
-20342,20343,20344,20345,20346,20347,20348,20349,20350,20351,20352,20353,
-20354,20355,20356,20357,20358,20359,20360,20361,20362,20363,20364,20365,
-20366,20367,20368,20369,20370,20371,20372,20373,20374,20375,20376,20377,
-20378,20379,20380,20381,20382,20383,20384,20385,20386,20387,20388,20389,
-20390,20391,20392,20393,20394,20395,20396,20397,20398,20399,20400,20401,
-20402,20403,20404,20405,20406,20407,20408,20409,20410,20411,20412,20413,
-20414,20415,20416,20417,20418,20419,20420,20421,20422,20423,20424,20425,
-20426,20427,20428,20429,20430,20431,20432,20433,20434,20435,20436,20437,
-20438,20439,20440,20441,20442,20443,20444,20445,20446,20447,20448,20449,
-20450,20451,20452,20453,20454,20455,20456,20457,20458,20459,20460,20461,
-20462,20463,20464,20465,20466,20467,20468,20469,20470,20471,20472,20473,
-20474,20475,20476,20477,20478,20479,20480,20481,20482,20483,20484,20485,
-20486,20487,20488,20489,20490,20491,20492,20493,20494,20495,20496,20497,
-20498,20499,20500,20501,20502,20503,20504,20505,20506,20507,20508,20509,
-20510,20511,20512,20513,20514,20515,20516,20517,20518,20519,20520,20521,
-20522,20523,20524,20525,20526,20527,20528,20529,20530,20531,20532,20533,
-20534,20535,20536,20537,20538,20539,20540,20541,20542,20543,20544,20545,
-20546,20547,20548,20549,20550,20551,20552,20553,20554,20555,20556,20557,
-20558,20559,20560,20561,20562,20563,20564,20565,20566,20567,20568,20569,
-20570,20571,20572,20573,20574,20575,20576,20577,20578,20579,20580,20581,
-20582,20583,20584,20585,20586,20587,20588,20589,20590,20591,20592,20593,
-20594,20595,20596,20597,20598,20599,20600,20601,20602,20603,20604,20605,
-20606,20607,20608,20609,20610,20611,20612,20613,20614,20615,20616,20617,
-20618,20619,20620,20621,20622,20623,20624,20625,20626,20627,20628,20629,
-20630,20631,20632,20633,20634,20635,20636,20637,20638,20639,20640,20641,
-20642,20643,20644,20645,20646,20647,20648,20649,20650,20651,20652,20653,
-20654,20655,20656,20657,20658,20659,20660,20661,20662,20663,20664,20665,
-20666,20667,20668,20669,20670,20671,20672,20673,20674,20675,20676,20677,
-20678,20679,20680,20681,20682,20683,20684,20685,20686,20687,20688,20689,
-20690,20691,20692,20693,20694,20695,20696,20697,20698,20699,20700,20701,
-20702,20703,20704,20705,20706,20707,20708,20709,20710,20711,20712,20713,
-20714,20715,20716,20717,20718,20719,20720,20721,20722,20723,20724,20725,
-20726,20727,20728,20729,20730,20731,20732,20733,20734,20735,20736,20737,
-20738,20739,20740,20741,20742,20743,20744,20745,20746,20747,20748,20749,
-20750,20751,20752,20753,20754,20755,20756,20757,20758,20759,20760,20761,
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-64983L,64984L,64985L,64986L,64987L,64988L,64989L,64990L,64991L,64992L,
-64993L,64994L,64995L,64996L,64997L,64998L,64999L,65000L,65001L,65002L,
-65003L,65004L,65005L,65006L,65007L,65008L,65009L,65010L,65011L,65012L,
-65013L,65014L,65015L,65016L,65017L,65018L,65019L,65020L,65021L,65022L,
-65023L,65024L,65025L,65026L,65027L,65028L,65029L,65030L,65031L,65032L,
-65033L,65034L,65035L,65036L,65037L,65038L,65039L,65040L,65041L,65042L,
-65043L,65044L,65045L,65046L,65047L,65048L,65049L,65050L,65051L,65052L,
-65053L,65054L,65055L,65056L,65057L,65058L,65059L,65060L,65061L,65062L,
-65063L,65064L,65065L,65066L,65067L,65068L,65069L,65070L,65071L,65072L,
-65073L,65074L,65075L,65076L,65077L,65078L,65079L,65080L,65081L,65082L,
-65083L,65084L,65085L,65086L,65087L,65088L,65089L,65090L,65091L,65092L,
-65093L,65094L,65095L,65096L,65097L,65098L,65099L,65100L,65101L,65102L,
-65103L,65104L,65105L,65106L,65107L,65108L,65109L,65110L,65111L,65112L,
-65113L,65114L,65115L,65116L,65117L,65118L,65119L,65120L,65121L,65122L,
-65123L,65124L,65125L,65126L,65127L,65128L,65129L,65130L,65131L,65132L,
-65133L,65134L,65135L,65136L,65137L,65138L,65139L,65140L,65141L,65142L,
-65143L,65144L,65145L,65146L,65147L,65148L,65149L,65150L,65151L,65152L,
-65153L,65154L,65155L,65156L,65157L,65158L,65159L,65160L,65161L,65162L,
-65163L,65164L,65165L,65166L,65167L,65168L,65169L,65170L,65171L,65172L,
-65173L,65174L,65175L,65176L,65177L,65178L,65179L,65180L,65181L,65182L,
-65183L,65184L,65185L,65186L,65187L,65188L,65189L,65190L,65191L,65192L,
-65193L,65194L,65195L,65196L,65197L,65198L,65199L,65200L,65201L,65202L,
-65203L,65204L,65205L,65206L,65207L,65208L,65209L,65210L,65211L,65212L,
-65213L,65214L,65215L,65216L,65217L,65218L,65219L,65220L,65221L,65222L,
-65223L,65224L,65225L,65226L,65227L,65228L,65229L,65230L,65231L,65232L,
-65233L,65234L,65235L,65236L,65237L,65238L,65239L,65240L,65241L,65242L,
-65243L,65244L,65245L,65246L,65247L,65248L,65249L,65250L,65251L,65252L,
-65253L,65254L,65255L,65256L,65257L,65258L,65259L,65260L,65261L,65262L,
-65263L,65264L,65265L,65266L,65267L,65268L,65269L,65270L,65271L,65272L,
-65273L,65274L,65275L,65276L,65277L,65278L,65279L,65280L,65281L,65282L,
-65283L,65284L,65285L,65286L,65287L,65288L,65289L,65290L,65291L,65292L,
-65293L,65294L,65295L,65296L,65297L,65298L,65299L,65300L,65301L,65302L,
-65303L,65304L,65305L,65306L,65307L,65308L,65309L,65310L,65311L,65312L,
-65313L,65314L,65315L,65316L,65317L,65318L,65319L,65320L,65321L,65322L,
-65323L,65324L,65325L,65326L,65327L,65328L,65329L,65330L,65331L,65332L,
-65333L,65334L,65335L,65336L,65337L,65338L,65339L,65340L,65341L,65342L,
-65343L,65344L,65313L,65314L,65315L,65316L,65317L,65318L,65319L,65320L,
-65321L,65322L,65323L,65324L,65325L,65326L,65327L,65328L,65329L,65330L,
-65331L,65332L,65333L,65334L,65335L,65336L,65337L,65338L,65371L,65372L,
-65373L,65374L,65375L,65376L,65377L,65378L,65379L,65380L,65381L,65382L,
-65383L,65384L,65385L,65386L,65387L,65388L,65389L,65390L,65391L,65392L,
-65393L,65394L,65395L,65396L,65397L,65398L,65399L,65400L,65401L,65402L,
-65403L,65404L,65405L,65406L,65407L,65408L,65409L,65410L,65411L,65412L,
-65413L,65414L,65415L,65416L,65417L,65418L,65419L,65420L,65421L,65422L,
-65423L,65424L,65425L,65426L,65427L,65428L,65429L,65430L,65431L,65432L,
-65433L,65434L,65435L,65436L,65437L,65438L,65439L,65440L,65441L,65442L,
-65443L,65444L,65445L,65446L,65447L,65448L,65449L,65450L,65451L,65452L,
-65453L,65454L,65455L,65456L,65457L,65458L,65459L,65460L,65461L,65462L,
-65463L,65464L,65465L,65466L,65467L,65468L,65469L,65470L,65471L,65472L,
-65473L,65474L,65475L,65476L,65477L,65478L,65479L,65480L,65481L,65482L,
-65483L,65484L,65485L,65486L,65487L,65488L,65489L,65490L,65491L,65492L,
-65493L,65494L,65495L,65496L,65497L,65498L,65499L,65500L,65501L,65502L,
-65503L,65504L,65505L,65506L,65507L,65508L,65509L,65510L,65511L,65512L,
-65513L,65514L,65515L,65516L,65517L,65518L,65519L,65520L,65521L,65522L,
-65523L,65524L,65525L,65526L,65527L,65528L,65529L,65530L,65531L,65532L,
-65533L,65534L,65535L,
-};
-#endif
-#line 1 "duk_util_bitdecoder.c"
-/*
- * Bitstream decoder.
- */
-
-/* include removed: duk_internal.h */
-
-/* Decode 'bits' bits from the input stream (bits must be 1...24).
- * When reading past bitstream end, zeroes are shifted in. The result
- * is signed to match duk_bd_decode_flagged.
- */
-DUK_INTERNAL duk_int32_t duk_bd_decode(duk_bitdecoder_ctx *ctx, duk_small_int_t bits) {
- duk_small_int_t shift;
- duk_uint32_t mask;
- duk_uint32_t tmp;
-
- /* Note: cannot read more than 24 bits without possibly shifting top bits out.
- * Fixable, but adds complexity.
- */
- DUK_ASSERT(bits >= 1 && bits <= 24);
-
- while (ctx->currbits < bits) {
-#if 0
- DUK_DDD(DUK_DDDPRINT("decode_bits: shift more data (bits=%ld, currbits=%ld)",
- (long) bits, (long) ctx->currbits));
-#endif
- ctx->currval <<= 8;
- if (ctx->offset < ctx->length) {
- /* If ctx->offset >= ctx->length, we "shift zeroes in"
- * instead of croaking.
- */
- ctx->currval |= ctx->data[ctx->offset++];
- }
- ctx->currbits += 8;
- }
-#if 0
- DUK_DDD(DUK_DDDPRINT("decode_bits: bits=%ld, currbits=%ld, currval=0x%08lx",
- (long) bits, (long) ctx->currbits, (unsigned long) ctx->currval));
-#endif
-
- /* Extract 'top' bits of currval; note that the extracted bits do not need
- * to be cleared, we just ignore them on next round.
- */
- shift = ctx->currbits - bits;
- mask = (1 << bits) - 1;
- tmp = (ctx->currval >> shift) & mask;
- ctx->currbits = shift; /* remaining */
-
-#if 0
- DUK_DDD(DUK_DDDPRINT("decode_bits: %ld bits -> 0x%08lx (%ld), currbits=%ld, currval=0x%08lx",
- (long) bits, (unsigned long) tmp, (long) tmp, (long) ctx->currbits, (unsigned long) ctx->currval));
-#endif
-
- return tmp;
-}
-
-DUK_INTERNAL duk_small_int_t duk_bd_decode_flag(duk_bitdecoder_ctx *ctx) {
- return (duk_small_int_t) duk_bd_decode(ctx, 1);
-}
-
-/* Decode a one-bit flag, and if set, decode a value of 'bits', otherwise return
- * default value. Return value is signed so that negative marker value can be
- * used by caller as a "not present" value.
- */
-DUK_INTERNAL duk_int32_t duk_bd_decode_flagged(duk_bitdecoder_ctx *ctx, duk_small_int_t bits, duk_int32_t def_value) {
- if (duk_bd_decode_flag(ctx)) {
- return (duk_int32_t) duk_bd_decode(ctx, bits);
- } else {
- return def_value;
- }
-}
-#line 1 "duk_util_bitencoder.c"
-/*
- * Bitstream encoder.
- */
-
-/* include removed: duk_internal.h */
-
-DUK_INTERNAL void duk_be_encode(duk_bitencoder_ctx *ctx, duk_uint32_t data, duk_small_int_t bits) {
- duk_uint8_t tmp;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(ctx->currbits < 8);
-
- /* This limitation would be fixable but adds unnecessary complexity. */
- DUK_ASSERT(bits >= 1 && bits <= 24);
-
- ctx->currval = (ctx->currval << bits) | data;
- ctx->currbits += bits;
-
- while (ctx->currbits >= 8) {
- if (ctx->offset < ctx->length) {
- tmp = (duk_uint8_t) ((ctx->currval >> (ctx->currbits - 8)) & 0xff);
- ctx->data[ctx->offset++] = tmp;
- } else {
- /* If buffer has been exhausted, truncate bitstream */
- ctx->truncated = 1;
- }
-
- ctx->currbits -= 8;
- }
-}
-
-DUK_INTERNAL void duk_be_finish(duk_bitencoder_ctx *ctx) {
- duk_small_int_t npad;
-
- DUK_ASSERT(ctx != NULL);
- DUK_ASSERT(ctx->currbits < 8);
-
- npad = (duk_small_int_t) (8 - ctx->currbits);
- if (npad > 0) {
- duk_be_encode(ctx, 0, npad);
- }
- DUK_ASSERT(ctx->currbits == 0);
-}
-#line 1 "duk_util_bufwriter.c"
-/*
- * Fast buffer writer with spare management.
- */
-
-/* include removed: duk_internal.h */
-
-/*
- * Macro support functions (use only macros in calling code)
- */
-
-DUK_LOCAL void duk__bw_update_ptrs(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t curr_offset, duk_size_t new_length) {
- duk_uint8_t *p;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw_ctx != NULL);
- DUK_UNREF(thr);
-
- p = (duk_uint8_t *) DUK_HBUFFER_DYNAMIC_GET_DATA_PTR(thr->heap, bw_ctx->buf);
- DUK_ASSERT(p != NULL || (DUK_HBUFFER_DYNAMIC_GET_SIZE(bw_ctx->buf) == 0 && curr_offset == 0 && new_length == 0));
- bw_ctx->p = p + curr_offset;
- bw_ctx->p_base = p;
- bw_ctx->p_limit = p + new_length;
-}
-
-DUK_INTERNAL void duk_bw_init(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_hbuffer_dynamic *h_buf) {
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw_ctx != NULL);
- DUK_ASSERT(h_buf != NULL);
- DUK_UNREF(thr);
-
- bw_ctx->buf = h_buf;
- duk__bw_update_ptrs(thr, bw_ctx, 0, DUK_HBUFFER_DYNAMIC_GET_SIZE(h_buf));
-}
-
-DUK_INTERNAL void duk_bw_init_pushbuf(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t buf_size) {
- duk_context *ctx;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw_ctx != NULL);
- ctx = (duk_context *) thr;
-
- (void) duk_push_dynamic_buffer(ctx, buf_size);
- bw_ctx->buf = (duk_hbuffer_dynamic *) duk_get_hbuffer(ctx, -1);
- duk__bw_update_ptrs(thr, bw_ctx, 0, buf_size);
-}
-
-/* Resize target buffer for requested size. Called by the macro only when the
- * fast path test (= there is space) fails.
- */
-DUK_INTERNAL duk_uint8_t *duk_bw_resize(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx, duk_size_t sz) {
- duk_size_t curr_off;
- duk_size_t add_sz;
- duk_size_t new_sz;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw_ctx != NULL);
-
- /* We could do this operation without caller updating bw_ctx->ptr,
- * but by writing it back here we can share code better.
- */
-
- curr_off = (duk_size_t) (bw_ctx->p - bw_ctx->p_base);
- add_sz = (curr_off >> DUK_BW_SPARE_SHIFT) + DUK_BW_SPARE_ADD;
- new_sz = curr_off + sz + add_sz;
- if (new_sz < curr_off) {
- /* overflow */
- DUK_ERROR_RANGE(thr, DUK_STR_BUFFER_TOO_LONG);
- return NULL; /* not reachable */
- }
-#if 0 /* for manual torture testing: tight allocation, useful with valgrind */
- new_sz = curr_off + sz;
-#endif
-
- /* This is important to ensure dynamic buffer data pointer is not
- * NULL (which is possible if buffer size is zero), which in turn
- * causes portability issues with e.g. memmove() and memcpy().
- */
- DUK_ASSERT(new_sz >= 1);
-
- DUK_DD(DUK_DDPRINT("resize bufferwriter from %ld to %ld (add_sz=%ld)", (long) curr_off, (long) new_sz, (long) add_sz));
-
- duk_hbuffer_resize(thr, bw_ctx->buf, new_sz);
- duk__bw_update_ptrs(thr, bw_ctx, curr_off, new_sz);
- return bw_ctx->p;
-}
-
-/* Make buffer compact, matching current written size. */
-DUK_INTERNAL void duk_bw_compact(duk_hthread *thr, duk_bufwriter_ctx *bw_ctx) {
- duk_size_t len;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw_ctx != NULL);
- DUK_UNREF(thr);
-
- len = (duk_size_t) (bw_ctx->p - bw_ctx->p_base);
- duk_hbuffer_resize(thr, bw_ctx->buf, len);
- duk__bw_update_ptrs(thr, bw_ctx, len, len);
-}
-
-DUK_INTERNAL void duk_bw_write_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len) {
- duk_uint8_t *p_base;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- p_base = bw->p_base;
- DUK_MEMCPY((void *) bw->p,
- (const void *) (p_base + src_off),
- (size_t) len);
- bw->p += len;
-}
-
-DUK_INTERNAL void duk_bw_write_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t src_off, duk_size_t len) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- DUK_BW_ENSURE(thr, bw, len);
- duk_bw_write_raw_slice(thr, bw, src_off, len);
-}
-
-DUK_INTERNAL void duk_bw_insert_raw_bytes(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, const duk_uint8_t *buf, duk_size_t len) {
- duk_uint8_t *p_base;
- duk_size_t buf_sz, move_sz;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(buf != NULL);
- DUK_UNREF(thr);
-
- p_base = bw->p_base;
- buf_sz = bw->p - p_base;
- move_sz = buf_sz - dst_off;
-
- DUK_ASSERT(p_base != NULL); /* buffer size is >= 1 */
- DUK_MEMMOVE((void *) (p_base + dst_off + len),
- (const void *) (p_base + dst_off),
- (size_t) move_sz);
- DUK_MEMCPY((void *) (p_base + dst_off),
- (const void *) buf,
- (size_t) len);
- bw->p += len;
-}
-
-DUK_INTERNAL void duk_bw_insert_ensure_bytes(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, const duk_uint8_t *buf, duk_size_t len) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(buf != NULL);
- DUK_UNREF(thr);
-
- DUK_BW_ENSURE(thr, bw, len);
- duk_bw_insert_raw_bytes(thr, bw, dst_off, buf, len);
-}
-
-DUK_INTERNAL void duk_bw_insert_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, duk_size_t src_off, duk_size_t len) {
- duk_uint8_t *p_base;
- duk_size_t buf_sz, move_sz;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- p_base = bw->p_base;
-
- /* Don't support "straddled" source now. */
- DUK_ASSERT(dst_off <= src_off || dst_off >= src_off + len);
-
- if (dst_off <= src_off) {
- /* Target is before source. Source offset is expressed as
- * a "before change" offset. Account for the memmove.
- */
- src_off += len;
- }
-
- buf_sz = bw->p - p_base;
- move_sz = buf_sz - dst_off;
-
- DUK_ASSERT(p_base != NULL); /* buffer size is >= 1 */
- DUK_MEMMOVE((void *) (p_base + dst_off + len),
- (const void *) (p_base + dst_off),
- (size_t) move_sz);
- DUK_MEMCPY((void *) (p_base + dst_off),
- (const void *) (p_base + src_off),
- (size_t) len);
- bw->p += len;
-}
-
-DUK_INTERNAL void duk_bw_insert_ensure_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t dst_off, duk_size_t src_off, duk_size_t len) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(dst_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(src_off + len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- /* Don't support "straddled" source now. */
- DUK_ASSERT(dst_off <= src_off || dst_off >= src_off + len);
-
- DUK_BW_ENSURE(thr, bw, len);
- duk_bw_insert_raw_slice(thr, bw, dst_off, src_off, len);
-}
-
-DUK_INTERNAL duk_uint8_t *duk_bw_insert_raw_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) {
- duk_uint8_t *p_base, *p_dst, *p_src;
- duk_size_t buf_sz, move_sz;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- p_base = bw->p_base;
- buf_sz = bw->p - p_base;
- move_sz = buf_sz - off;
- p_dst = p_base + off + len;
- p_src = p_base + off;
- DUK_MEMMOVE((void *) p_dst, (const void *) p_src, (size_t) move_sz);
- return p_src; /* point to start of 'reserved area' */
-}
-
-DUK_INTERNAL duk_uint8_t *duk_bw_insert_ensure_area(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) {
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- DUK_BW_ENSURE(thr, bw, len);
- return duk_bw_insert_raw_area(thr, bw, off, len);
-}
-
-DUK_INTERNAL void duk_bw_remove_raw_slice(duk_hthread *thr, duk_bufwriter_ctx *bw, duk_size_t off, duk_size_t len) {
- duk_size_t move_sz;
-
- duk_uint8_t *p_base;
- duk_uint8_t *p_src;
- duk_uint8_t *p_dst;
-
- DUK_ASSERT(thr != NULL);
- DUK_ASSERT(bw != NULL);
- DUK_ASSERT(off <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_ASSERT(off + len <= DUK_BW_GET_SIZE(thr, bw));
- DUK_UNREF(thr);
-
- p_base = bw->p_base;
- p_dst = p_base + off;
- p_src = p_dst + len;
- move_sz = (duk_size_t) (bw->p - p_src);
- DUK_MEMMOVE((void *) p_dst,
- (const void *) p_src,
- (size_t) move_sz);
- bw->p -= len;
-}
-
-/*
- * Macro support functions for reading/writing raw data.
- *
- * These are done using mempcy to ensure they're valid even for unaligned
- * reads/writes on platforms where alignment counts. On x86 at least gcc
- * is able to compile these into a bswap+mov. "Always inline" is used to
- * ensure these macros compile to minimal code.
- *
- * Not really bufwriter related, but currently used together.
- */
-
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint16_t duk_raw_read_u16_be(duk_uint8_t **p) {
- union {
- duk_uint8_t b[2];
- duk_uint16_t x;
- } u;
-
- DUK_MEMCPY((void *) u.b, (const void *) (*p), (size_t) 2);
- u.x = DUK_NTOH16(u.x);
- *p += 2;
- return u.x;
-}
-
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_uint32_t duk_raw_read_u32_be(duk_uint8_t **p) {
- union {
- duk_uint8_t b[4];
- duk_uint32_t x;
- } u;
-
- DUK_MEMCPY((void *) u.b, (const void *) (*p), (size_t) 4);
- u.x = DUK_NTOH32(u.x);
- *p += 4;
- return u.x;
-}
-
-DUK_INTERNAL DUK_ALWAYS_INLINE duk_double_t duk_raw_read_double_be(duk_uint8_t **p) {
- duk_double_union du;
- union {
- duk_uint8_t b[4];
- duk_uint32_t x;
- } u;
-
- DUK_MEMCPY((void *) u.b, (const void *) (*p), (size_t) 4);
- u.x = DUK_NTOH32(u.x);
- du.ui[DUK_DBL_IDX_UI0] = u.x;
- DUK_MEMCPY((void *) u.b, (const void *) (*p + 4), (size_t) 4);
- u.x = DUK_NTOH32(u.x);
- du.ui[DUK_DBL_IDX_UI1] = u.x;
- *p += 8;
-
- return du.d;
-}
-
-DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u16_be(duk_uint8_t **p, duk_uint16_t val) {
- union {
- duk_uint8_t b[2];
- duk_uint16_t x;
- } u;
-
- u.x = DUK_HTON16(val);
- DUK_MEMCPY((void *) (*p), (const void *) u.b, (size_t) 2);
- *p += 2;
-}
-
-DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_u32_be(duk_uint8_t **p, duk_uint32_t val) {
- union {
- duk_uint8_t b[4];
- duk_uint32_t x;
- } u;
-
- u.x = DUK_HTON32(val);
- DUK_MEMCPY((void *) (*p), (const void *) u.b, (size_t) 4);
- *p += 4;
-}
-
-DUK_INTERNAL DUK_ALWAYS_INLINE void duk_raw_write_double_be(duk_uint8_t **p, duk_double_t val) {
- duk_double_union du;
- union {
- duk_uint8_t b[4];
- duk_uint32_t x;
- } u;
-
- du.d = val;
- u.x = du.ui[DUK_DBL_IDX_UI0];
- u.x = DUK_HTON32(u.x);
- DUK_MEMCPY((void *) (*p), (const void *) u.b, (size_t) 4);
- u.x = du.ui[DUK_DBL_IDX_UI1];
- u.x = DUK_HTON32(u.x);
- DUK_MEMCPY((void *) (*p + 4), (const void *) u.b, (size_t) 4);
- *p += 8;
-}
-#line 1 "duk_util_hashbytes.c"
-/*
- * Hash function duk_util_hashbytes().
- *
- * Currently, 32-bit MurmurHash2.
- *
- * Don't rely on specific hash values; hash function may be endianness
- * dependent, for instance.
- */
-
-/* include removed: duk_internal.h */
-
-#if defined(DUK_USE_STRHASH_DENSE)
-/* 'magic' constants for Murmurhash2 */
-#define DUK__MAGIC_M ((duk_uint32_t) 0x5bd1e995UL)
-#define DUK__MAGIC_R 24
-
-DUK_INTERNAL duk_uint32_t duk_util_hashbytes(const duk_uint8_t *data, duk_size_t len, duk_uint32_t seed) {
- duk_uint32_t h = seed ^ ((duk_uint32_t) len);
-
- while (len >= 4) {
- /* Portability workaround is required for platforms without
- * unaligned access. The replacement code emulates little
- * endian access even on big endian architectures, which is
- * OK as long as it is consistent for a build.
- */
-#ifdef DUK_USE_HASHBYTES_UNALIGNED_U32_ACCESS
- duk_uint32_t k = *((const duk_uint32_t *) (const void *) data);
-#else
- duk_uint32_t k = ((duk_uint32_t) data[0]) |
- (((duk_uint32_t) data[1]) << 8) |
- (((duk_uint32_t) data[2]) << 16) |
- (((duk_uint32_t) data[3]) << 24);
-#endif
-
- k *= DUK__MAGIC_M;
- k ^= k >> DUK__MAGIC_R;
- k *= DUK__MAGIC_M;
- h *= DUK__MAGIC_M;
- h ^= k;
- data += 4;
- len -= 4;
- }
-
- switch (len) {
- case 3: h ^= data[2] << 16;
- case 2: h ^= data[1] << 8;
- case 1: h ^= data[0];
- h *= DUK__MAGIC_M;
- }
-
- h ^= h >> 13;
- h *= DUK__MAGIC_M;
- h ^= h >> 15;
-
- return h;
-}
-#endif /* DUK_USE_STRHASH_DENSE */
-#line 1 "duk_util_tinyrandom.c"
-/*
- * A tiny random number generator.
- *
- * Currently used for Math.random().
- *
- * http://www.woodmann.com/forum/archive/index.php/t-3100.html
- */
-
-/* include removed: duk_internal.h */
-
-#define DUK__UPDATE_RND(rnd) do { \
- (rnd) += ((rnd) * (rnd)) | 0x05; \
- (rnd) = ((rnd) & 0xffffffffU); /* if duk_uint32_t is exactly 32 bits, this is a NOP */ \
- } while (0)
-
-#define DUK__RND_BIT(rnd) ((rnd) >> 31) /* only use the highest bit */
-
-DUK_INTERNAL duk_uint32_t duk_util_tinyrandom_get_bits(duk_hthread *thr, duk_small_int_t n) {
- duk_small_int_t i;
- duk_uint32_t res = 0;
- duk_uint32_t rnd;
-
- rnd = thr->heap->rnd_state;
-
- for (i = 0; i < n; i++) {
- DUK__UPDATE_RND(rnd);
- res <<= 1;
- res += DUK__RND_BIT(rnd);
- }
-
- thr->heap->rnd_state = rnd;
-
- return res;
-}
-
-DUK_INTERNAL duk_double_t duk_util_tinyrandom_get_double(duk_hthread *thr) {
- duk_double_t t;
- duk_small_int_t n;
- duk_uint32_t rnd;
-
- /*
- * XXX: could make this a lot faster if we create the double memory
- * representation directly. Feasible easily (must be uniform random).
- */
-
- rnd = thr->heap->rnd_state;
-
- n = 53; /* enough to cover the whole mantissa */
- t = 0.0;
-
- do {
- DUK__UPDATE_RND(rnd);
- t += DUK__RND_BIT(rnd);
- t /= 2.0;
- } while (--n);
-
- thr->heap->rnd_state = rnd;
-
- DUK_ASSERT(t >= (duk_double_t) 0.0);
- DUK_ASSERT(t < (duk_double_t) 1.0);
-
- return t;
-}
-#endif
diff --git a/javascript/duktape/duktape.h b/javascript/duktape/duktape.h
deleted file mode 100644
index a727187eb..000000000
--- a/javascript/duktape/duktape.h
+++ /dev/null
@@ -1,1567 +0,0 @@
-/*
- * Duktape public API for Duktape 1.5.0.
- *
- * See the API reference for documentation on call semantics.
- * The exposed API is inside the DUK_API_PUBLIC_H_INCLUDED
- * include guard. Other parts of the header are Duktape
- * internal and related to platform/compiler/feature detection.
- *
- * Git commit 83d557704ee63f68ab40b6fcb00995c9b3d6777c (v1.5.0).
- * Git branch master.
- *
- * See Duktape AUTHORS.rst and LICENSE.txt for copyright and
- * licensing information.
- */
-
-/* LICENSE.txt */
-/*
- * ===============
- * Duktape license
- * ===============
- *
- * (http://opensource.org/licenses/MIT)
- *
- * Copyright (c) 2013-2016 by Duktape authors (see AUTHORS.rst)
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-
-/* AUTHORS.rst */
-/*
- * ===============
- * Duktape authors
- * ===============
- *
- * Copyright
- * =========
- *
- * Duktape copyrights are held by its authors. Each author has a copyright
- * to their contribution, and agrees to irrevocably license the contribution
- * under the Duktape ``LICENSE.txt``.
- *
- * Authors
- * =======
- *
- * Please include an e-mail address, a link to your GitHub profile, or something
- * similar to allow your contribution to be identified accurately.
- *
- * The following people have contributed code, website contents, or Wiki contents,
- * and agreed to irrevocably license their contributions under the Duktape
- * ``LICENSE.txt`` (in order of appearance):
- *
- * * Sami Vaarala <sami.vaarala@iki.fi>
- * * Niki Dobrev
- * * Andreas \u00d6man <andreas@lonelycoder.com>
- * * L\u00e1szl\u00f3 Lang\u00f3 <llango.u-szeged@partner.samsung.com>
- * * Legimet <legimet.calc@gmail.com>
- * * Karl Skomski <karl@skomski.com>
- * * Bruce Pascoe <fatcerberus1@gmail.com>
- * * Ren\u00e9 Hollander <rene@rene8888.at>
- * * Julien Hamaide (https://github.com/crazyjul)
- * * Sebastian G\u00f6tte (https://github.com/jaseg)
- *
- * Other contributions
- * ===================
- *
- * The following people have contributed something other than code (e.g. reported
- * bugs, provided ideas, etc; roughly in order of appearance):
- *
- * * Greg Burns
- * * Anthony Rabine
- * * Carlos Costa
- * * Aur\u00e9lien Bouilland
- * * Preet Desai (Pris Matic)
- * * judofyr (http://www.reddit.com/user/judofyr)
- * * Jason Woofenden
- * * Micha\u0142 Przyby\u015b
- * * Anthony Howe
- * * Conrad Pankoff
- * * Jim Schimpf
- * * Rajaran Gaunker (https://github.com/zimbabao)
- * * Andreas \u00d6man
- * * Doug Sanden
- * * Josh Engebretson (https://github.com/JoshEngebretson)
- * * Remo Eichenberger (https://github.com/remoe)
- * * Mamod Mehyar (https://github.com/mamod)
- * * David Demelier (https://github.com/markand)
- * * Tim Caswell (https://github.com/creationix)
- * * Mitchell Blank Jr (https://github.com/mitchblank)
- * * https://github.com/yushli
- * * Seo Sanghyeon (https://github.com/sanxiyn)
- * * Han ChoongWoo (https://github.com/tunz)
- * * Joshua Peek (https://github.com/josh)
- * * Bruce E. Pascoe (https://github.com/fatcerberus)
- * * https://github.com/Kelledin
- * * https://github.com/sstruchtrup
- * * Michael Drake (https://github.com/tlsa)
- * * https://github.com/chris-y
- * * Laurent Zubiaur (https://github.com/lzubiaur)
- * * Ole Andr\u00e9 Vadla Ravn\u00e5s (https://github.com/oleavr)
- *
- * If you are accidentally missing from this list, send me an e-mail
- * (``sami.vaarala@iki.fi``) and I'll fix the omission.
- */
-
-#ifndef DUKTAPE_H_INCLUDED
-#define DUKTAPE_H_INCLUDED
-
-#define DUK_SINGLE_FILE
-
-/* External duk_config.h provides platform/compiler/OS dependent
- * typedefs and macros, and DUK_USE_xxx config options so that
- * the rest of Duktape doesn't need to do any feature detection.
- */
-#include "duk_config.h"
-
-/*
- * BEGIN PUBLIC API
- */
-
-#ifndef DUK_API_PUBLIC_H_INCLUDED
-#define DUK_API_PUBLIC_H_INCLUDED
-
-/*
- * Avoid C++ name mangling
- */
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-/*
- * Some defines forwarded from feature detection
- */
-
-#undef DUK_API_VARIADIC_MACROS
-#ifdef DUK_USE_VARIADIC_MACROS
-#define DUK_API_VARIADIC_MACROS
-#endif
-
-#define DUK_API_NORETURN(decl) DUK_NORETURN(decl)
-
-/*
- * Public API specific typedefs
- *
- * Many types are wrapped by Duktape for portability to rare platforms
- * where e.g. 'int' is a 16-bit type. See practical typing discussion
- * in Duktape web documentation.
- */
-
-struct duk_memory_functions;
-struct duk_function_list_entry;
-struct duk_number_list_entry;
-
-/* duk_context is now defined in duk_config.h because it may also be
- * referenced there by prototypes.
- */
-typedef struct duk_memory_functions duk_memory_functions;
-typedef struct duk_function_list_entry duk_function_list_entry;
-typedef struct duk_number_list_entry duk_number_list_entry;
-
-typedef duk_ret_t (*duk_c_function)(duk_context *ctx);
-typedef void *(*duk_alloc_function) (void *udata, duk_size_t size);
-typedef void *(*duk_realloc_function) (void *udata, void *ptr, duk_size_t size);
-typedef void (*duk_free_function) (void *udata, void *ptr);
-typedef void (*duk_fatal_function) (duk_context *ctx, duk_errcode_t code, const char *msg);
-typedef void (*duk_decode_char_function) (void *udata, duk_codepoint_t codepoint);
-typedef duk_codepoint_t (*duk_map_char_function) (void *udata, duk_codepoint_t codepoint);
-typedef duk_ret_t (*duk_safe_call_function) (duk_context *ctx);
-typedef duk_size_t (*duk_debug_read_function) (void *udata, char *buffer, duk_size_t length);
-typedef duk_size_t (*duk_debug_write_function) (void *udata, const char *buffer, duk_size_t length);
-typedef duk_size_t (*duk_debug_peek_function) (void *udata);
-typedef void (*duk_debug_read_flush_function) (void *udata);
-typedef void (*duk_debug_write_flush_function) (void *udata);
-typedef duk_idx_t (*duk_debug_request_function) (duk_context *ctx, void *udata, duk_idx_t nvalues);
-typedef void (*duk_debug_detached_function) (void *udata);
-
-struct duk_memory_functions {
- duk_alloc_function alloc_func;
- duk_realloc_function realloc_func;
- duk_free_function free_func;
- void *udata;
-};
-
-struct duk_function_list_entry {
- const char *key;
- duk_c_function value;
- duk_idx_t nargs;
-};
-
-struct duk_number_list_entry {
- const char *key;
- duk_double_t value;
-};
-
-/*
- * Constants
- */
-
-/* Duktape version, (major * 10000) + (minor * 100) + patch. Allows C code
- * to #ifdef against Duktape API version. The same value is also available
- * to Ecmascript code in Duktape.version. Unofficial development snapshots
- * have 99 for patch level (e.g. 0.10.99 would be a development version
- * after 0.10.0 but before the next official release).
- */
-#define DUK_VERSION 10500L
-
-/* Git commit, describe, and branch for Duktape build. Useful for
- * non-official snapshot builds so that application code can easily log
- * which Duktape snapshot was used. Not available in the Ecmascript
- * environment.
- */
-#define DUK_GIT_COMMIT "83d557704ee63f68ab40b6fcb00995c9b3d6777c"
-#define DUK_GIT_DESCRIBE "v1.5.0"
-#define DUK_GIT_BRANCH "master"
-
-/* Duktape debug protocol version used by this build. */
-#define DUK_DEBUG_PROTOCOL_VERSION 1
-
-/* Used to represent invalid index; if caller uses this without checking,
- * this index will map to a non-existent stack entry. Also used in some
- * API calls as a marker to denote "no value".
- */
-#define DUK_INVALID_INDEX DUK_IDX_MIN
-
-/* Indicates that a native function does not have a fixed number of args,
- * and the argument stack should not be capped/extended at all.
- */
-#define DUK_VARARGS ((duk_int_t) (-1))
-
-/* Number of value stack entries (in addition to actual call arguments)
- * guaranteed to be allocated on entry to a Duktape/C function.
- */
-#define DUK_API_ENTRY_STACK 64
-
-/* Value types, used by e.g. duk_get_type() */
-#define DUK_TYPE_MIN 0
-#define DUK_TYPE_NONE 0 /* no value, e.g. invalid index */
-#define DUK_TYPE_UNDEFINED 1 /* Ecmascript undefined */
-#define DUK_TYPE_NULL 2 /* Ecmascript null */
-#define DUK_TYPE_BOOLEAN 3 /* Ecmascript boolean: 0 or 1 */
-#define DUK_TYPE_NUMBER 4 /* Ecmascript number: double */
-#define DUK_TYPE_STRING 5 /* Ecmascript string: CESU-8 / extended UTF-8 encoded */
-#define DUK_TYPE_OBJECT 6 /* Ecmascript object: includes objects, arrays, functions, threads */
-#define DUK_TYPE_BUFFER 7 /* fixed or dynamic, garbage collected byte buffer */
-#define DUK_TYPE_POINTER 8 /* raw void pointer */
-#define DUK_TYPE_LIGHTFUNC 9 /* lightweight function pointer */
-#define DUK_TYPE_MAX 9
-
-/* Value mask types, used by e.g. duk_get_type_mask() */
-#define DUK_TYPE_MASK_NONE (1 << DUK_TYPE_NONE)
-#define DUK_TYPE_MASK_UNDEFINED (1 << DUK_TYPE_UNDEFINED)
-#define DUK_TYPE_MASK_NULL (1 << DUK_TYPE_NULL)
-#define DUK_TYPE_MASK_BOOLEAN (1 << DUK_TYPE_BOOLEAN)
-#define DUK_TYPE_MASK_NUMBER (1 << DUK_TYPE_NUMBER)
-#define DUK_TYPE_MASK_STRING (1 << DUK_TYPE_STRING)
-#define DUK_TYPE_MASK_OBJECT (1 << DUK_TYPE_OBJECT)
-#define DUK_TYPE_MASK_BUFFER (1 << DUK_TYPE_BUFFER)
-#define DUK_TYPE_MASK_POINTER (1 << DUK_TYPE_POINTER)
-#define DUK_TYPE_MASK_LIGHTFUNC (1 << DUK_TYPE_LIGHTFUNC)
-#define DUK_TYPE_MASK_THROW (1 << 10) /* internal flag value: throw if mask doesn't match */
-
-/* Coercion hints */
-#define DUK_HINT_NONE 0 /* prefer number, unless input is a Date, in which
- * case prefer string (E5 Section 8.12.8)
- */
-#define DUK_HINT_STRING 1 /* prefer string */
-#define DUK_HINT_NUMBER 2 /* prefer number */
-
-/* Enumeration flags for duk_enum() */
-#define DUK_ENUM_INCLUDE_NONENUMERABLE (1 << 0) /* enumerate non-numerable properties in addition to enumerable */
-#define DUK_ENUM_INCLUDE_INTERNAL (1 << 1) /* enumerate internal properties (regardless of enumerability) */
-#define DUK_ENUM_OWN_PROPERTIES_ONLY (1 << 2) /* don't walk prototype chain, only check own properties */
-#define DUK_ENUM_ARRAY_INDICES_ONLY (1 << 3) /* only enumerate array indices */
-#define DUK_ENUM_SORT_ARRAY_INDICES (1 << 4) /* sort array indices, use with DUK_ENUM_ARRAY_INDICES_ONLY */
-#define DUK_ENUM_NO_PROXY_BEHAVIOR (1 << 5) /* enumerate a proxy object itself without invoking proxy behavior */
-
-/* Compilation flags for duk_compile() and duk_eval() */
-/* DUK_COMPILE_xxx bits 0-2 are reserved for an internal 'nargs' argument
- * (the nargs value passed is direct stack arguments + 1 to account for an
- * internal extra argument).
- */
-#define DUK_COMPILE_EVAL (1 << 3) /* compile eval code (instead of global code) */
-#define DUK_COMPILE_FUNCTION (1 << 4) /* compile function code (instead of global code) */
-#define DUK_COMPILE_STRICT (1 << 5) /* use strict (outer) context for global, eval, or function code */
-#define DUK_COMPILE_SAFE (1 << 6) /* (internal) catch compilation errors */
-#define DUK_COMPILE_NORESULT (1 << 7) /* (internal) omit eval result */
-#define DUK_COMPILE_NOSOURCE (1 << 8) /* (internal) no source string on stack */
-#define DUK_COMPILE_STRLEN (1 << 9) /* (internal) take strlen() of src_buffer (avoids double evaluation in macro) */
-#define DUK_COMPILE_NOFILENAME (1 << 10) /* (internal) no filename on stack */
-
-/* Flags for duk_def_prop() and its variants */
-#define DUK_DEFPROP_WRITABLE (1 << 0) /* set writable (effective if DUK_DEFPROP_HAVE_WRITABLE set) */
-#define DUK_DEFPROP_ENUMERABLE (1 << 1) /* set enumerable (effective if DUK_DEFPROP_HAVE_ENUMERABLE set) */
-#define DUK_DEFPROP_CONFIGURABLE (1 << 2) /* set configurable (effective if DUK_DEFPROP_HAVE_CONFIGURABLE set) */
-#define DUK_DEFPROP_HAVE_WRITABLE (1 << 3) /* set/clear writable */
-#define DUK_DEFPROP_HAVE_ENUMERABLE (1 << 4) /* set/clear enumerable */
-#define DUK_DEFPROP_HAVE_CONFIGURABLE (1 << 5) /* set/clear configurable */
-#define DUK_DEFPROP_HAVE_VALUE (1 << 6) /* set value (given on value stack) */
-#define DUK_DEFPROP_HAVE_GETTER (1 << 7) /* set getter (given on value stack) */
-#define DUK_DEFPROP_HAVE_SETTER (1 << 8) /* set setter (given on value stack) */
-#define DUK_DEFPROP_FORCE (1 << 9) /* force change if possible, may still fail for e.g. virtual properties */
-#define DUK_DEFPROP_SET_WRITABLE (DUK_DEFPROP_HAVE_WRITABLE | DUK_DEFPROP_WRITABLE)
-#define DUK_DEFPROP_CLEAR_WRITABLE DUK_DEFPROP_HAVE_WRITABLE
-#define DUK_DEFPROP_SET_ENUMERABLE (DUK_DEFPROP_HAVE_ENUMERABLE | DUK_DEFPROP_ENUMERABLE)
-#define DUK_DEFPROP_CLEAR_ENUMERABLE DUK_DEFPROP_HAVE_ENUMERABLE
-#define DUK_DEFPROP_SET_CONFIGURABLE (DUK_DEFPROP_HAVE_CONFIGURABLE | DUK_DEFPROP_CONFIGURABLE)
-#define DUK_DEFPROP_CLEAR_CONFIGURABLE DUK_DEFPROP_HAVE_CONFIGURABLE
-
-/* Flags for duk_push_thread_raw() */
-#define DUK_THREAD_NEW_GLOBAL_ENV (1 << 0) /* create a new global environment */
-
-/* Flags for duk_push_string_file_raw() */
-#define DUK_STRING_PUSH_SAFE (1 << 0) /* no error if file does not exist */
-
-/* Duktape specific error codes (must be 8 bits at most, see duk_error.h) */
-#define DUK_ERR_NONE 0 /* no error (e.g. from duk_get_error_code()) */
-#define DUK_ERR_UNIMPLEMENTED_ERROR 50 /* UnimplementedError */ /* XXX: replace with TypeError? */
-#define DUK_ERR_UNSUPPORTED_ERROR 51 /* UnsupportedError */ /* XXX: replace with TypeError? */
-#define DUK_ERR_INTERNAL_ERROR 52 /* InternalError */ /* XXX: replace with plain Error? */
-#define DUK_ERR_ALLOC_ERROR 53 /* AllocError */ /* XXX: replace with RangeError? */
-#define DUK_ERR_ASSERTION_ERROR 54 /* AssertionError */ /* XXX: to be removed? */
-#define DUK_ERR_API_ERROR 55 /* APIError */ /* XXX: replace with TypeError? */
-#define DUK_ERR_UNCAUGHT_ERROR 56 /* UncaughtError */ /* XXX: to be removed? */
-
-/* Ecmascript E5 specification error codes */
-#define DUK_ERR_ERROR 100 /* Error */
-#define DUK_ERR_EVAL_ERROR 101 /* EvalError */
-#define DUK_ERR_RANGE_ERROR 102 /* RangeError */
-#define DUK_ERR_REFERENCE_ERROR 103 /* ReferenceError */
-#define DUK_ERR_SYNTAX_ERROR 104 /* SyntaxError */
-#define DUK_ERR_TYPE_ERROR 105 /* TypeError */
-#define DUK_ERR_URI_ERROR 106 /* URIError */
-
-/* Return codes for C functions (shortcut for throwing an error) */
-#define DUK_RET_UNIMPLEMENTED_ERROR (-DUK_ERR_UNIMPLEMENTED_ERROR)
-#define DUK_RET_UNSUPPORTED_ERROR (-DUK_ERR_UNSUPPORTED_ERROR)
-#define DUK_RET_INTERNAL_ERROR (-DUK_ERR_INTERNAL_ERROR)
-#define DUK_RET_ALLOC_ERROR (-DUK_ERR_ALLOC_ERROR)
-#define DUK_RET_ASSERTION_ERROR (-DUK_ERR_ASSERTION_ERROR)
-#define DUK_RET_API_ERROR (-DUK_ERR_API_ERROR)
-#define DUK_RET_UNCAUGHT_ERROR (-DUK_ERR_UNCAUGHT_ERROR)
-#define DUK_RET_ERROR (-DUK_ERR_ERROR)
-#define DUK_RET_EVAL_ERROR (-DUK_ERR_EVAL_ERROR)
-#define DUK_RET_RANGE_ERROR (-DUK_ERR_RANGE_ERROR)
-#define DUK_RET_REFERENCE_ERROR (-DUK_ERR_REFERENCE_ERROR)
-#define DUK_RET_SYNTAX_ERROR (-DUK_ERR_SYNTAX_ERROR)
-#define DUK_RET_TYPE_ERROR (-DUK_ERR_TYPE_ERROR)
-#define DUK_RET_URI_ERROR (-DUK_ERR_URI_ERROR)
-
-/* Return codes for protected calls (duk_safe_call(), duk_pcall()) */
-#define DUK_EXEC_SUCCESS 0
-#define DUK_EXEC_ERROR 1
-
-/* Log levels */
-#define DUK_LOG_TRACE 0
-#define DUK_LOG_DEBUG 1
-#define DUK_LOG_INFO 2
-#define DUK_LOG_WARN 3
-#define DUK_LOG_ERROR 4
-#define DUK_LOG_FATAL 5
-
-/*
- * If no variadic macros, __FILE__ and __LINE__ are passed through globals
- * which is ugly and not thread safe.
- */
-
-#ifndef DUK_API_VARIADIC_MACROS
-DUK_EXTERNAL_DECL const char *duk_api_global_filename;
-DUK_EXTERNAL_DECL duk_int_t duk_api_global_line;
-#endif
-
-/*
- * Context management
- */
-
-DUK_EXTERNAL_DECL
-duk_context *duk_create_heap(duk_alloc_function alloc_func,
- duk_realloc_function realloc_func,
- duk_free_function free_func,
- void *heap_udata,
- duk_fatal_function fatal_handler);
-DUK_EXTERNAL_DECL void duk_destroy_heap(duk_context *ctx);
-
-#define duk_create_heap_default() \
- duk_create_heap(NULL, NULL, NULL, NULL, NULL)
-
-/*
- * Memory management
- *
- * Raw functions have no side effects (cannot trigger GC).
- */
-
-DUK_EXTERNAL_DECL void *duk_alloc_raw(duk_context *ctx, duk_size_t size);
-DUK_EXTERNAL_DECL void duk_free_raw(duk_context *ctx, void *ptr);
-DUK_EXTERNAL_DECL void *duk_realloc_raw(duk_context *ctx, void *ptr, duk_size_t size);
-DUK_EXTERNAL_DECL void *duk_alloc(duk_context *ctx, duk_size_t size);
-DUK_EXTERNAL_DECL void duk_free(duk_context *ctx, void *ptr);
-DUK_EXTERNAL_DECL void *duk_realloc(duk_context *ctx, void *ptr, duk_size_t size);
-DUK_EXTERNAL_DECL void duk_get_memory_functions(duk_context *ctx, duk_memory_functions *out_funcs);
-DUK_EXTERNAL_DECL void duk_gc(duk_context *ctx, duk_uint_t flags);
-
-/*
- * Error handling
- */
-
-DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_throw(duk_context *ctx));
-DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_fatal(duk_context *ctx, duk_errcode_t err_code, const char *err_msg));
-
-DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...));
-
-#ifdef DUK_API_VARIADIC_MACROS
-#define duk_error(ctx,err_code,...) \
- duk_error_raw((ctx), (duk_errcode_t) (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), __VA_ARGS__)
-#else
-DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...));
-/* One problem with this macro is that expressions like the following fail
- * to compile: "(void) duk_error(...)". But because duk_error() is noreturn,
- * they make little sense anyway.
- */
-#define duk_error \
- (duk_api_global_filename = (const char *) (__FILE__), \
- duk_api_global_line = (duk_int_t) (__LINE__), \
- duk_error_stash) /* last value is func pointer, arguments follow in parens */
-#endif
-
-DUK_API_NORETURN(DUK_EXTERNAL_DECL void duk_error_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap));
-#define duk_error_va(ctx,err_code,fmt,ap) \
- duk_error_va_raw((ctx), (duk_errcode_t) (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), (fmt), (ap))
-
-/*
- * Other state related functions
- */
-
-DUK_EXTERNAL_DECL duk_bool_t duk_is_strict_call(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_constructor_call(duk_context *ctx);
-
-/*
- * Stack management
- */
-
-DUK_EXTERNAL_DECL duk_idx_t duk_normalize_index(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_idx_t duk_require_normalize_index(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_valid_index(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_require_valid_index(duk_context *ctx, duk_idx_t index);
-
-DUK_EXTERNAL_DECL duk_idx_t duk_get_top(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_set_top(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_idx_t duk_get_top_index(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_idx_t duk_require_top_index(duk_context *ctx);
-
-/* Although extra/top could be an unsigned type here, using a signed type
- * makes the API more robust to calling code calculation errors or corner
- * cases (where caller might occasionally come up with negative values).
- * Negative values are treated as zero, which is better than casting them
- * to a large unsigned number. (This principle is used elsewhere in the
- * API too.)
- */
-DUK_EXTERNAL_DECL duk_bool_t duk_check_stack(duk_context *ctx, duk_idx_t extra);
-DUK_EXTERNAL_DECL void duk_require_stack(duk_context *ctx, duk_idx_t extra);
-DUK_EXTERNAL_DECL duk_bool_t duk_check_stack_top(duk_context *ctx, duk_idx_t top);
-DUK_EXTERNAL_DECL void duk_require_stack_top(duk_context *ctx, duk_idx_t top);
-
-/*
- * Stack manipulation (other than push/pop)
- */
-
-DUK_EXTERNAL_DECL void duk_swap(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
-DUK_EXTERNAL_DECL void duk_swap_top(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_dup(duk_context *ctx, duk_idx_t from_index);
-DUK_EXTERNAL_DECL void duk_dup_top(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_insert(duk_context *ctx, duk_idx_t to_index);
-DUK_EXTERNAL_DECL void duk_replace(duk_context *ctx, duk_idx_t to_index);
-DUK_EXTERNAL_DECL void duk_copy(duk_context *ctx, duk_idx_t from_index, duk_idx_t to_index);
-DUK_EXTERNAL_DECL void duk_remove(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_xcopymove_raw(duk_context *to_ctx, duk_context *from_ctx, duk_idx_t count, duk_bool_t is_copy);
-
-#define duk_xmove_top(to_ctx,from_ctx,count) \
- duk_xcopymove_raw((to_ctx), (from_ctx), (count), 0 /*is_copy*/)
-#define duk_xcopy_top(to_ctx,from_ctx,count) \
- duk_xcopymove_raw((to_ctx), (from_ctx), (count), 1 /*is_copy*/)
-
-/*
- * Push operations
- *
- * Push functions return the absolute (relative to bottom of frame)
- * position of the pushed value for convenience.
- *
- * Note: duk_dup() is technically a push.
- */
-
-DUK_EXTERNAL_DECL void duk_push_undefined(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_null(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_boolean(duk_context *ctx, duk_bool_t val);
-DUK_EXTERNAL_DECL void duk_push_true(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_false(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_number(duk_context *ctx, duk_double_t val);
-DUK_EXTERNAL_DECL void duk_push_nan(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_int(duk_context *ctx, duk_int_t val);
-DUK_EXTERNAL_DECL void duk_push_uint(duk_context *ctx, duk_uint_t val);
-DUK_EXTERNAL_DECL const char *duk_push_string(duk_context *ctx, const char *str);
-DUK_EXTERNAL_DECL const char *duk_push_lstring(duk_context *ctx, const char *str, duk_size_t len);
-DUK_EXTERNAL_DECL void duk_push_pointer(duk_context *ctx, void *p);
-DUK_EXTERNAL_DECL const char *duk_push_sprintf(duk_context *ctx, const char *fmt, ...);
-DUK_EXTERNAL_DECL const char *duk_push_vsprintf(duk_context *ctx, const char *fmt, va_list ap);
-
-DUK_EXTERNAL_DECL const char *duk_push_string_file_raw(duk_context *ctx, const char *path, duk_uint_t flags);
-#define duk_push_string_file(ctx,path) \
- duk_push_string_file_raw((ctx), (path), 0)
-
-DUK_EXTERNAL_DECL void duk_push_this(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_current_function(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_current_thread(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_global_object(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_heap_stash(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_global_stash(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_push_thread_stash(duk_context *ctx, duk_context *target_ctx);
-
-DUK_EXTERNAL_DECL duk_idx_t duk_push_object(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_idx_t duk_push_array(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_idx_t duk_push_c_function(duk_context *ctx, duk_c_function func, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_idx_t duk_push_c_lightfunc(duk_context *ctx, duk_c_function func, duk_idx_t nargs, duk_idx_t length, duk_int_t magic);
-DUK_EXTERNAL_DECL duk_idx_t duk_push_thread_raw(duk_context *ctx, duk_uint_t flags);
-
-#define duk_push_thread(ctx) \
- duk_push_thread_raw((ctx), 0 /*flags*/)
-
-#define duk_push_thread_new_globalenv(ctx) \
- duk_push_thread_raw((ctx), DUK_THREAD_NEW_GLOBAL_ENV /*flags*/)
-
-DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, ...);
-
-#ifdef DUK_API_VARIADIC_MACROS
-#define duk_push_error_object(ctx,err_code,...) \
- duk_push_error_object_raw((ctx), (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), __VA_ARGS__)
-#else
-DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_stash(duk_context *ctx, duk_errcode_t err_code, const char *fmt, ...);
-/* Note: parentheses are required so that the comma expression works in assignments. */
-#define duk_push_error_object \
- (duk_api_global_filename = (const char *) (__FILE__), \
- duk_api_global_line = (duk_int_t) (__LINE__), \
- duk_push_error_object_stash) /* last value is func pointer, arguments follow in parens */
-#endif
-
-DUK_EXTERNAL_DECL duk_idx_t duk_push_error_object_va_raw(duk_context *ctx, duk_errcode_t err_code, const char *filename, duk_int_t line, const char *fmt, va_list ap);
-#define duk_push_error_object_va(ctx,err_code,fmt,ap) \
- duk_push_error_object_va_raw((ctx), (err_code), (const char *) (__FILE__), (duk_int_t) (__LINE__), (fmt), (ap))
-
-#define DUK_BUF_FLAG_DYNAMIC (1 << 0) /* internal flag: dynamic buffer */
-#define DUK_BUF_FLAG_EXTERNAL (1 << 1) /* internal flag: external buffer */
-#define DUK_BUF_FLAG_NOZERO (1 << 2) /* internal flag: don't zero allocated buffer */
-
-DUK_EXTERNAL_DECL void *duk_push_buffer_raw(duk_context *ctx, duk_size_t size, duk_small_uint_t flags);
-
-#define duk_push_buffer(ctx,size,dynamic) \
- duk_push_buffer_raw((ctx), (size), (dynamic) ? DUK_BUF_FLAG_DYNAMIC : 0)
-#define duk_push_fixed_buffer(ctx,size) \
- duk_push_buffer_raw((ctx), (size), 0 /*flags*/)
-#define duk_push_dynamic_buffer(ctx,size) \
- duk_push_buffer_raw((ctx), (size), DUK_BUF_FLAG_DYNAMIC /*flags*/)
-#define duk_push_external_buffer(ctx) \
- ((void) duk_push_buffer_raw((ctx), 0, DUK_BUF_FLAG_DYNAMIC | DUK_BUF_FLAG_EXTERNAL))
-
-#define DUK_BUFOBJ_CREATE_ARRBUF (1 << 4) /* internal flag: create backing ArrayBuffer; keep in one byte */
-#define DUK_BUFOBJ_DUKTAPE_BUFFER 0
-#define DUK_BUFOBJ_NODEJS_BUFFER 1
-#define DUK_BUFOBJ_ARRAYBUFFER 2
-#define DUK_BUFOBJ_DATAVIEW (3 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_INT8ARRAY (4 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_UINT8ARRAY (5 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_UINT8CLAMPEDARRAY (6 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_INT16ARRAY (7 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_UINT16ARRAY (8 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_INT32ARRAY (9 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_UINT32ARRAY (10 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_FLOAT32ARRAY (11 | DUK_BUFOBJ_CREATE_ARRBUF)
-#define DUK_BUFOBJ_FLOAT64ARRAY (12 | DUK_BUFOBJ_CREATE_ARRBUF)
-
-DUK_EXTERNAL_DECL void duk_push_buffer_object(duk_context *ctx, duk_idx_t idx_buffer, duk_size_t byte_offset, duk_size_t byte_length, duk_uint_t flags);
-
-DUK_EXTERNAL_DECL duk_idx_t duk_push_heapptr(duk_context *ctx, void *ptr);
-
-/*
- * Pop operations
- */
-
-DUK_EXTERNAL_DECL void duk_pop(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_pop_n(duk_context *ctx, duk_idx_t count);
-DUK_EXTERNAL_DECL void duk_pop_2(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_pop_3(duk_context *ctx);
-
-/*
- * Type checks
- *
- * duk_is_none(), which would indicate whether index it outside of stack,
- * is not needed; duk_is_valid_index() gives the same information.
- */
-
-DUK_EXTERNAL_DECL duk_int_t duk_get_type(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_check_type(duk_context *ctx, duk_idx_t index, duk_int_t type);
-DUK_EXTERNAL_DECL duk_uint_t duk_get_type_mask(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_check_type_mask(duk_context *ctx, duk_idx_t index, duk_uint_t mask);
-
-DUK_EXTERNAL_DECL duk_bool_t duk_is_undefined(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_null(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_null_or_undefined(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_boolean(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_number(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_nan(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_string(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_object(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_buffer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_pointer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_lightfunc(duk_context *ctx, duk_idx_t index);
-
-DUK_EXTERNAL_DECL duk_bool_t duk_is_array(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_c_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_ecmascript_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_bound_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_thread(duk_context *ctx, duk_idx_t index);
-
-#define duk_is_callable(ctx,index) \
- duk_is_function((ctx), (index))
-DUK_EXTERNAL_DECL duk_bool_t duk_is_dynamic_buffer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_fixed_buffer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_is_external_buffer(duk_context *ctx, duk_idx_t index);
-
-#define duk_is_primitive(ctx,index) \
- duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_UNDEFINED | \
- DUK_TYPE_MASK_NULL | \
- DUK_TYPE_MASK_BOOLEAN | \
- DUK_TYPE_MASK_NUMBER | \
- DUK_TYPE_MASK_STRING | \
- DUK_TYPE_MASK_BUFFER | \
- DUK_TYPE_MASK_POINTER | \
- DUK_TYPE_MASK_LIGHTFUNC)
-
-#define duk_is_object_coercible(ctx,index) \
- duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_BOOLEAN | \
- DUK_TYPE_MASK_NUMBER | \
- DUK_TYPE_MASK_STRING | \
- DUK_TYPE_MASK_OBJECT | \
- DUK_TYPE_MASK_BUFFER | \
- DUK_TYPE_MASK_POINTER | \
- DUK_TYPE_MASK_LIGHTFUNC)
-
-DUK_EXTERNAL_DECL duk_errcode_t duk_get_error_code(duk_context *ctx, duk_idx_t index);
-#define duk_is_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) != 0)
-#define duk_is_eval_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_EVAL_ERROR)
-#define duk_is_range_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_RANGE_ERROR)
-#define duk_is_reference_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_REFERENCE_ERROR)
-#define duk_is_syntax_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_SYNTAX_ERROR)
-#define duk_is_type_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_TYPE_ERROR)
-#define duk_is_uri_error(ctx,index) \
- (duk_get_error_code((ctx), (index)) == DUK_ERR_URI_ERROR)
-
-/*
- * Get operations: no coercion, returns default value for invalid
- * indices and invalid value types.
- *
- * duk_get_undefined() and duk_get_null() would be pointless and
- * are not included.
- */
-
-DUK_EXTERNAL_DECL duk_bool_t duk_get_boolean(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_double_t duk_get_number(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_int_t duk_get_int(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_uint_t duk_get_uint(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_get_string(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_get_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
-DUK_EXTERNAL_DECL void *duk_get_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
-DUK_EXTERNAL_DECL void *duk_get_buffer_data(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
-DUK_EXTERNAL_DECL void *duk_get_pointer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_c_function duk_get_c_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_context *duk_get_context(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void *duk_get_heapptr(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_size_t duk_get_length(duk_context *ctx, duk_idx_t index);
-
-/*
- * Require operations: no coercion, throw error if index or type
- * is incorrect. No defaulting.
- */
-
-#define duk_require_type_mask(ctx,index,mask) \
- ((void) duk_check_type_mask((ctx), (index), (mask) | DUK_TYPE_MASK_THROW))
-
-DUK_EXTERNAL_DECL void duk_require_undefined(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_require_null(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_require_boolean(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_double_t duk_require_number(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_int_t duk_require_int(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_uint_t duk_require_uint(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_require_string(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_require_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
-DUK_EXTERNAL_DECL void *duk_require_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
-DUK_EXTERNAL_DECL void *duk_require_buffer_data(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
-DUK_EXTERNAL_DECL void *duk_require_pointer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_c_function duk_require_c_function(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_context *duk_require_context(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_require_function(duk_context *ctx, duk_idx_t index);
-#define duk_require_callable(ctx,index) \
- duk_require_function((ctx), (index))
-DUK_EXTERNAL_DECL void *duk_require_heapptr(duk_context *ctx, duk_idx_t index);
-
-#define duk_require_object_coercible(ctx,index) \
- ((void) duk_check_type_mask((ctx), (index), DUK_TYPE_MASK_BOOLEAN | \
- DUK_TYPE_MASK_NUMBER | \
- DUK_TYPE_MASK_STRING | \
- DUK_TYPE_MASK_OBJECT | \
- DUK_TYPE_MASK_BUFFER | \
- DUK_TYPE_MASK_POINTER | \
- DUK_TYPE_MASK_LIGHTFUNC | \
- DUK_TYPE_MASK_THROW))
-
-/*
- * Coercion operations: in-place coercion, return coerced value where
- * applicable. If index is invalid, throw error. Some coercions may
- * throw an expected error (e.g. from a toString() or valueOf() call)
- * or an internal error (e.g. from out of memory).
- */
-
-DUK_EXTERNAL_DECL void duk_to_undefined(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_to_null(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_bool_t duk_to_boolean(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_double_t duk_to_number(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_int_t duk_to_int(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_uint_t duk_to_uint(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_int32_t duk_to_int32(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_uint32_t duk_to_uint32(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_uint16_t duk_to_uint16(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_to_string(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
-DUK_EXTERNAL_DECL void *duk_to_buffer_raw(duk_context *ctx, duk_idx_t index, duk_size_t *out_size, duk_uint_t flags);
-DUK_EXTERNAL_DECL void *duk_to_pointer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_to_object(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_to_defaultvalue(duk_context *ctx, duk_idx_t index, duk_int_t hint);
-DUK_EXTERNAL_DECL void duk_to_primitive(duk_context *ctx, duk_idx_t index, duk_int_t hint);
-
-#define DUK_BUF_MODE_FIXED 0 /* internal: request fixed buffer result */
-#define DUK_BUF_MODE_DYNAMIC 1 /* internal: request dynamic buffer result */
-#define DUK_BUF_MODE_DONTCARE 2 /* internal: don't care about fixed/dynamic nature */
-
-#define duk_to_buffer(ctx,index,out_size) \
- duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_DONTCARE)
-#define duk_to_fixed_buffer(ctx,index,out_size) \
- duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_FIXED)
-#define duk_to_dynamic_buffer(ctx,index,out_size) \
- duk_to_buffer_raw((ctx), (index), (out_size), DUK_BUF_MODE_DYNAMIC)
-
-/* safe variants of a few coercion operations */
-DUK_EXTERNAL_DECL const char *duk_safe_to_lstring(duk_context *ctx, duk_idx_t index, duk_size_t *out_len);
-#define duk_safe_to_string(ctx,index) \
- duk_safe_to_lstring((ctx), (index), NULL)
-
-/*
- * Misc conversion
- */
-
-DUK_EXTERNAL_DECL const char *duk_base64_encode(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_base64_decode(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_hex_encode(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_hex_decode(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL const char *duk_json_encode(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_json_decode(duk_context *ctx, duk_idx_t index);
-
-/*
- * Buffer
- */
-
-DUK_EXTERNAL_DECL void *duk_resize_buffer(duk_context *ctx, duk_idx_t index, duk_size_t new_size);
-DUK_EXTERNAL_DECL void *duk_steal_buffer(duk_context *ctx, duk_idx_t index, duk_size_t *out_size);
-DUK_EXTERNAL_DECL void duk_config_buffer(duk_context *ctx, duk_idx_t index, void *ptr, duk_size_t len);
-
-/*
- * Property access
- *
- * The basic function assumes key is on stack. The _string variant takes
- * a C string as a property name, while the _index variant takes an array
- * index as a property name (e.g. 123 is equivalent to the key "123").
- */
-
-DUK_EXTERNAL_DECL duk_bool_t duk_get_prop(duk_context *ctx, duk_idx_t obj_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
-DUK_EXTERNAL_DECL duk_bool_t duk_get_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_put_prop(duk_context *ctx, duk_idx_t obj_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
-DUK_EXTERNAL_DECL duk_bool_t duk_put_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_del_prop(duk_context *ctx, duk_idx_t obj_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
-DUK_EXTERNAL_DECL duk_bool_t duk_del_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_has_prop(duk_context *ctx, duk_idx_t obj_index);
-DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_string(duk_context *ctx, duk_idx_t obj_index, const char *key);
-DUK_EXTERNAL_DECL duk_bool_t duk_has_prop_index(duk_context *ctx, duk_idx_t obj_index, duk_uarridx_t arr_index);
-DUK_EXTERNAL_DECL void duk_def_prop(duk_context *ctx, duk_idx_t obj_index, duk_uint_t flags);
-
-DUK_EXTERNAL_DECL duk_bool_t duk_get_global_string(duk_context *ctx, const char *key);
-DUK_EXTERNAL_DECL duk_bool_t duk_put_global_string(duk_context *ctx, const char *key);
-
-/*
- * Object prototype
- */
-
-DUK_EXTERNAL_DECL void duk_get_prototype(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_set_prototype(duk_context *ctx, duk_idx_t index);
-
-/*
- * Object finalizer
- */
-
-DUK_EXTERNAL_DECL void duk_get_finalizer(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_set_finalizer(duk_context *ctx, duk_idx_t index);
-
-/*
- * Global object
- */
-
-DUK_EXTERNAL_DECL void duk_set_global_object(duk_context *ctx);
-
-/*
- * Duktape/C function magic value
- */
-
-DUK_EXTERNAL_DECL duk_int_t duk_get_magic(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL void duk_set_magic(duk_context *ctx, duk_idx_t index, duk_int_t magic);
-DUK_EXTERNAL_DECL duk_int_t duk_get_current_magic(duk_context *ctx);
-
-/*
- * Module helpers: put multiple function or constant properties
- */
-
-DUK_EXTERNAL_DECL void duk_put_function_list(duk_context *ctx, duk_idx_t obj_index, const duk_function_list_entry *funcs);
-DUK_EXTERNAL_DECL void duk_put_number_list(duk_context *ctx, duk_idx_t obj_index, const duk_number_list_entry *numbers);
-
-/*
- * Variable access
- */
-
-/* XXX: These calls are incomplete and not usable now. They are not (yet)
- * part of the public API.
- */
-DUK_EXTERNAL_DECL void duk_get_var(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_put_var(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_bool_t duk_del_var(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_bool_t duk_has_var(duk_context *ctx);
-
-/*
- * Object operations
- */
-
-DUK_EXTERNAL_DECL void duk_compact(duk_context *ctx, duk_idx_t obj_index);
-DUK_EXTERNAL_DECL void duk_enum(duk_context *ctx, duk_idx_t obj_index, duk_uint_t enum_flags);
-DUK_EXTERNAL_DECL duk_bool_t duk_next(duk_context *ctx, duk_idx_t enum_index, duk_bool_t get_value);
-
-/*
- * String manipulation
- */
-
-DUK_EXTERNAL_DECL void duk_concat(duk_context *ctx, duk_idx_t count);
-DUK_EXTERNAL_DECL void duk_join(duk_context *ctx, duk_idx_t count);
-DUK_EXTERNAL_DECL void duk_decode_string(duk_context *ctx, duk_idx_t index, duk_decode_char_function callback, void *udata);
-DUK_EXTERNAL_DECL void duk_map_string(duk_context *ctx, duk_idx_t index, duk_map_char_function callback, void *udata);
-DUK_EXTERNAL_DECL void duk_substring(duk_context *ctx, duk_idx_t index, duk_size_t start_char_offset, duk_size_t end_char_offset);
-DUK_EXTERNAL_DECL void duk_trim(duk_context *ctx, duk_idx_t index);
-DUK_EXTERNAL_DECL duk_codepoint_t duk_char_code_at(duk_context *ctx, duk_idx_t index, duk_size_t char_offset);
-
-/*
- * Ecmascript operators
- */
-
-DUK_EXTERNAL_DECL duk_bool_t duk_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
-DUK_EXTERNAL_DECL duk_bool_t duk_strict_equals(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
-DUK_EXTERNAL_DECL duk_bool_t duk_instanceof(duk_context *ctx, duk_idx_t index1, duk_idx_t index2);
-
-/*
- * Function (method) calls
- */
-
-DUK_EXTERNAL_DECL void duk_call(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL void duk_call_method(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL void duk_call_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_int_t duk_pcall(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_int_t duk_pcall_method(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_int_t duk_pcall_prop(duk_context *ctx, duk_idx_t obj_index, duk_idx_t nargs);
-DUK_EXTERNAL_DECL void duk_new(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_int_t duk_pnew(duk_context *ctx, duk_idx_t nargs);
-DUK_EXTERNAL_DECL duk_int_t duk_safe_call(duk_context *ctx, duk_safe_call_function func, duk_idx_t nargs, duk_idx_t nrets);
-
-/*
- * Thread management
- */
-
-/* There are currently no native functions to yield/resume, due to the internal
- * limitations on coroutine handling. These will be added later.
- */
-
-/*
- * Compilation and evaluation
- */
-
-DUK_EXTERNAL_DECL duk_int_t duk_eval_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);
-DUK_EXTERNAL_DECL duk_int_t duk_compile_raw(duk_context *ctx, const char *src_buffer, duk_size_t src_length, duk_uint_t flags);
-
-/* plain */
-#define duk_eval(ctx) \
- ((void) duk_eval_raw((ctx), NULL, 0, 2 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOFILENAME))
-
-#define duk_eval_noresult(ctx) \
- ((void) duk_eval_raw((ctx), NULL, 0, 2 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval(ctx) \
- (duk_eval_raw((ctx), NULL, 0, 2 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval_noresult(ctx) \
- (duk_eval_raw((ctx), NULL, 0, 2 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_compile(ctx,flags) \
- ((void) duk_compile_raw((ctx), NULL, 0, 3 /*args*/ | (flags)))
-
-#define duk_pcompile(ctx,flags) \
- (duk_compile_raw((ctx), NULL, 0, 3 /*args*/ | (flags) | DUK_COMPILE_SAFE))
-
-/* string */
-#define duk_eval_string(ctx,src) \
- ((void) duk_eval_raw((ctx), (src), 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME))
-
-#define duk_eval_string_noresult(ctx,src) \
- ((void) duk_eval_raw((ctx), (src), 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval_string(ctx,src) \
- (duk_eval_raw((ctx), (src), 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval_string_noresult(ctx,src) \
- (duk_eval_raw((ctx), (src), 0, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_compile_string(ctx,flags,src) \
- ((void) duk_compile_raw((ctx), (src), 0, 1 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME))
-
-#define duk_compile_string_filename(ctx,flags,src) \
- ((void) duk_compile_raw((ctx), (src), 0, 2 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
-
-#define duk_pcompile_string(ctx,flags,src) \
- (duk_compile_raw((ctx), (src), 0, 1 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN | DUK_COMPILE_NOFILENAME))
-
-#define duk_pcompile_string_filename(ctx,flags,src) \
- (duk_compile_raw((ctx), (src), 0, 2 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_STRLEN))
-
-/* lstring */
-#define duk_eval_lstring(ctx,buf,len) \
- ((void) duk_eval_raw((ctx), buf, len, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME))
-
-#define duk_eval_lstring_noresult(ctx,buf,len) \
- ((void) duk_eval_raw((ctx), buf, len, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval_lstring(ctx,buf,len) \
- (duk_eval_raw((ctx), buf, len, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NOSOURCE | DUK_COMPILE_SAFE | DUK_COMPILE_NOFILENAME))
-
-#define duk_peval_lstring_noresult(ctx,buf,len) \
- (duk_eval_raw((ctx), buf, len, 1 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NORESULT | DUK_COMPILE_NOFILENAME))
-
-#define duk_compile_lstring(ctx,flags,buf,len) \
- ((void) duk_compile_raw((ctx), buf, len, 1 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME))
-
-#define duk_compile_lstring_filename(ctx,flags,buf,len) \
- ((void) duk_compile_raw((ctx), buf, len, 2 /*args*/ | (flags) | DUK_COMPILE_NOSOURCE))
-
-#define duk_pcompile_lstring(ctx,flags,buf,len) \
- (duk_compile_raw((ctx), buf, len, 1 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE | DUK_COMPILE_NOFILENAME))
-
-#define duk_pcompile_lstring_filename(ctx,flags,buf,len) \
- (duk_compile_raw((ctx), buf, len, 2 /*args*/ | (flags) | DUK_COMPILE_SAFE | DUK_COMPILE_NOSOURCE))
-
-/* file */
-#define duk_eval_file(ctx,path) \
- ((void) duk_push_string_file_raw((ctx), (path), 0), \
- (void) duk_push_string((ctx), (path)), \
- (void) duk_eval_raw((ctx), NULL, 0, 3 /*args*/ | DUK_COMPILE_EVAL))
-
-#define duk_eval_file_noresult(ctx,path) \
- ((void) duk_push_string_file_raw((ctx), (path), 0), \
- (void) duk_push_string((ctx), (path)), \
- (void) duk_eval_raw((ctx), NULL, 0, 3 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_NORESULT))
-
-#define duk_peval_file(ctx,path) \
- ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
- (void) duk_push_string((ctx), (path)), \
- duk_eval_raw((ctx), NULL, 0, 3 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE))
-
-#define duk_peval_file_noresult(ctx,path) \
- ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
- (void) duk_push_string((ctx), (path)), \
- duk_eval_raw((ctx), NULL, 0, 3 /*args*/ | DUK_COMPILE_EVAL | DUK_COMPILE_SAFE | DUK_COMPILE_NORESULT))
-
-#define duk_compile_file(ctx,flags,path) \
- ((void) duk_push_string_file_raw((ctx), (path), 0), \
- (void) duk_push_string((ctx), (path)), \
- (void) duk_compile_raw((ctx), NULL, 0, 3 /*args*/ | (flags)))
-
-#define duk_pcompile_file(ctx,flags,path) \
- ((void) duk_push_string_file_raw((ctx), (path), DUK_STRING_PUSH_SAFE), \
- (void) duk_push_string((ctx), (path)), \
- duk_compile_raw((ctx), NULL, 0, 3 /*args*/ | (flags) | DUK_COMPILE_SAFE))
-
-/*
- * Bytecode load/dump
- */
-
-DUK_EXTERNAL_DECL void duk_dump_function(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_load_function(duk_context *ctx);
-
-/*
- * Logging
- */
-
-DUK_EXTERNAL_DECL void duk_log(duk_context *ctx, duk_int_t level, const char *fmt, ...);
-DUK_EXTERNAL_DECL void duk_log_va(duk_context *ctx, duk_int_t level, const char *fmt, va_list ap);
-
-/*
- * Debugging
- */
-
-DUK_EXTERNAL_DECL void duk_push_context_dump(duk_context *ctx);
-
-#if defined(DUK_USE_FILE_IO)
-/* internal use */
-#define duk_dump_context_filehandle(ctx,fh) \
- (duk_push_context_dump((ctx)), \
- DUK_FPRINTF((fh), "%s\n", duk_safe_to_string(ctx, -1)), \
- duk_pop(ctx))
-
-/* external use */
-#define duk_dump_context_stdout(ctx) \
- duk_dump_context_filehandle((ctx), DUK_STDOUT)
-#define duk_dump_context_stderr(ctx) \
- duk_dump_context_filehandle((ctx), DUK_STDERR)
-#else /* DUK_USE_FILE_IO */
-#define duk_dump_context_stdout(ctx) ((void) 0)
-#define duk_dump_context_stderr(ctx) ((void) 0)
-#endif /* DUK_USE_FILE_IO */
-
-/*
- * Debugger (debug protocol)
- */
-
-#define duk_debugger_attach(ctx,read_cb,write_cb,peek_cb,read_flush_cb,write_flush_cb,detached_cb,udata) \
- duk_debugger_attach_custom((ctx), (read_cb), (write_cb), (peek_cb), (read_flush_cb), (write_flush_cb), \
- NULL, (detached_cb), (udata))
-
-DUK_EXTERNAL_DECL void duk_debugger_attach_custom(duk_context *ctx,
- duk_debug_read_function read_cb,
- duk_debug_write_function write_cb,
- duk_debug_peek_function peek_cb,
- duk_debug_read_flush_function read_flush_cb,
- duk_debug_write_flush_function write_flush_cb,
- duk_debug_request_function request_cb,
- duk_debug_detached_function detached_cb,
- void *udata);
-DUK_EXTERNAL_DECL void duk_debugger_detach(duk_context *ctx);
-DUK_EXTERNAL_DECL void duk_debugger_cooperate(duk_context *ctx);
-DUK_EXTERNAL_DECL duk_bool_t duk_debugger_notify(duk_context *ctx, duk_idx_t nvalues);
-DUK_EXTERNAL_DECL void duk_debugger_pause(duk_context *ctx);
-
-/*
- * Date provider related constants
- *
- * NOTE: These are "semi public" - you should only use these if you write
- * your own platform specific Date provider, see doc/datetime.rst.
- */
-
-/* Millisecond count constants. */
-#define DUK_DATE_MSEC_SECOND 1000L
-#define DUK_DATE_MSEC_MINUTE (60L * 1000L)
-#define DUK_DATE_MSEC_HOUR (60L * 60L * 1000L)
-#define DUK_DATE_MSEC_DAY (24L * 60L * 60L * 1000L)
-
-/* Ecmascript date range is 100 million days from Epoch:
- * > 100e6 * 24 * 60 * 60 * 1000 // 100M days in millisecs
- * 8640000000000000
- * (= 8.64e15)
- */
-#define DUK_DATE_MSEC_100M_DAYS (8.64e15)
-#define DUK_DATE_MSEC_100M_DAYS_LEEWAY (8.64e15 + 24 * 3600e3)
-
-/* Ecmascript year range:
- * > new Date(100e6 * 24 * 3600e3).toISOString()
- * '+275760-09-13T00:00:00.000Z'
- * > new Date(-100e6 * 24 * 3600e3).toISOString()
- * '-271821-04-20T00:00:00.000Z'
- */
-#define DUK_DATE_MIN_ECMA_YEAR (-271821L)
-#define DUK_DATE_MAX_ECMA_YEAR 275760L
-
-/* Part indices for internal breakdowns. Part order from DUK_DATE_IDX_YEAR
- * to DUK_DATE_IDX_MILLISECOND matches argument ordering of Ecmascript API
- * calls (like Date constructor call). Some functions in duk_bi_date.c
- * depend on the specific ordering, so change with care. 16 bits are not
- * enough for all parts (year, specifically).
- *
- * (Must be in-sync with genbuiltins.py.)
- */
-#define DUK_DATE_IDX_YEAR 0 /* year */
-#define DUK_DATE_IDX_MONTH 1 /* month: 0 to 11 */
-#define DUK_DATE_IDX_DAY 2 /* day within month: 0 to 30 */
-#define DUK_DATE_IDX_HOUR 3
-#define DUK_DATE_IDX_MINUTE 4
-#define DUK_DATE_IDX_SECOND 5
-#define DUK_DATE_IDX_MILLISECOND 6
-#define DUK_DATE_IDX_WEEKDAY 7 /* weekday: 0 to 6, 0=sunday, 1=monday, etc */
-#define DUK_DATE_IDX_NUM_PARTS 8
-
-/* Internal API call flags, used for various functions in this file.
- * Certain flags are used by only certain functions, but since the flags
- * don't overlap, a single flags value can be passed around to multiple
- * functions.
- *
- * The unused top bits of the flags field are also used to pass values
- * to helpers (duk__get_part_helper() and duk__set_part_helper()).
- *
- * (Must be in-sync with genbuiltins.py.)
- */
-
-/* NOTE: when writing a Date provider you only need a few specific
- * flags from here, the rest are internal. Avoid using anything you
- * don't need.
- */
-
-#define DUK_DATE_FLAG_NAN_TO_ZERO (1 << 0) /* timeval breakdown: internal time value NaN -> zero */
-#define DUK_DATE_FLAG_NAN_TO_RANGE_ERROR (1 << 1) /* timeval breakdown: internal time value NaN -> RangeError (toISOString) */
-#define DUK_DATE_FLAG_ONEBASED (1 << 2) /* timeval breakdown: convert month and day-of-month parts to one-based (default is zero-based) */
-#define DUK_DATE_FLAG_EQUIVYEAR (1 << 3) /* timeval breakdown: replace year with equivalent year in the [1971,2037] range for DST calculations */
-#define DUK_DATE_FLAG_LOCALTIME (1 << 4) /* convert time value to local time */
-#define DUK_DATE_FLAG_SUB1900 (1 << 5) /* getter: subtract 1900 from year when getting year part */
-#define DUK_DATE_FLAG_TOSTRING_DATE (1 << 6) /* include date part in string conversion result */
-#define DUK_DATE_FLAG_TOSTRING_TIME (1 << 7) /* include time part in string conversion result */
-#define DUK_DATE_FLAG_TOSTRING_LOCALE (1 << 8) /* use locale specific formatting if available */
-#define DUK_DATE_FLAG_TIMESETTER (1 << 9) /* setter: call is a time setter (affects hour, min, sec, ms); otherwise date setter (affects year, month, day-in-month) */
-#define DUK_DATE_FLAG_YEAR_FIXUP (1 << 10) /* setter: perform 2-digit year fixup (00...99 -> 1900...1999) */
-#define DUK_DATE_FLAG_SEP_T (1 << 11) /* string conversion: use 'T' instead of ' ' as a separator */
-#define DUK_DATE_FLAG_VALUE_SHIFT 12 /* additional values begin at bit 12 */
-
-/*
- * ROM pointer compression
- */
-
-/* Support array for ROM pointer compression. Only declared when ROM
- * pointer compression is active.
- */
-#if defined(DUK_USE_ROM_OBJECTS) && defined(DUK_USE_HEAPPTR16)
-DUK_EXTERNAL_DECL const void * const duk_rom_compressed_pointers[];
-#endif
-
-/*
- * C++ name mangling
- */
-
-#ifdef __cplusplus
-/* end 'extern "C"' wrapper */
-}
-#endif
-
-#endif /* DUK_API_PUBLIC_H_INCLUDED */
-
-/*
- * END PUBLIC API
- */
-
-/*
- * Union to access IEEE double memory representation, indexes for double
- * memory representation, and some macros for double manipulation.
- *
- * Also used by packed duk_tval. Use a union for bit manipulation to
- * minimize aliasing issues in practice. The C99 standard does not
- * guarantee that this should work, but it's a very widely supported
- * practice for low level manipulation.
- *
- * IEEE double format summary:
- *
- * seeeeeee eeeeffff ffffffff ffffffff ffffffff ffffffff ffffffff ffffffff
- * A B C D E F G H
- *
- * s sign bit
- * eee... exponent field
- * fff... fraction
- *
- * See http://en.wikipedia.org/wiki/Double_precision_floating-point_format.
- *
- * NaNs are represented as exponent 0x7ff and mantissa != 0. The NaN is a
- * signaling NaN when the highest bit of the mantissa is zero, and a quiet
- * NaN when the highest bit is set.
- *
- * At least three memory layouts are relevant here:
- *
- * A B C D E F G H Big endian (e.g. 68k) DUK_USE_DOUBLE_BE
- * H G F E D C B A Little endian (e.g. x86) DUK_USE_DOUBLE_LE
- * D C B A H G F E Mixed/cross endian (e.g. ARM) DUK_USE_DOUBLE_ME
- *
- * ARM is a special case: ARM double values are in mixed/cross endian
- * format while ARM duk_uint64_t values are in standard little endian
- * format (H G F E D C B A). When a double is read as a duk_uint64_t
- * from memory, the register will contain the (logical) value
- * E F G H A B C D. This requires some special handling below.
- *
- * Indexes of various types (8-bit, 16-bit, 32-bit) in memory relative to
- * the logical (big endian) order:
- *
- * byte order duk_uint8_t duk_uint16_t duk_uint32_t
- * BE 01234567 0123 01
- * LE 76543210 3210 10
- * ME (ARM) 32107654 1032 01
- *
- * Some processors may alter NaN values in a floating point load+store.
- * For instance, on X86 a FLD + FSTP may convert a signaling NaN to a
- * quiet one. This is catastrophic when NaN space is used in packed
- * duk_tval values. See: misc/clang_aliasing.c.
- */
-
-#ifndef DUK_DBLUNION_H_INCLUDED
-#define DUK_DBLUNION_H_INCLUDED
-
-/*
- * Union for accessing double parts, also serves as packed duk_tval
- */
-
-union duk_double_union {
- double d;
- float f[2];
-#if defined(DUK_USE_64BIT_OPS)
- duk_uint64_t ull[1];
-#endif
- duk_uint32_t ui[2];
- duk_uint16_t us[4];
- duk_uint8_t uc[8];
-#if defined(DUK_USE_PACKED_TVAL)
- void *vp[2]; /* used by packed duk_tval, assumes sizeof(void *) == 4 */
-#endif
-};
-
-typedef union duk_double_union duk_double_union;
-
-/*
- * Indexes of various types with respect to big endian (logical) layout
- */
-
-#if defined(DUK_USE_DOUBLE_LE)
-#ifdef DUK_USE_64BIT_OPS
-#define DUK_DBL_IDX_ULL0 0
-#endif
-#define DUK_DBL_IDX_UI0 1
-#define DUK_DBL_IDX_UI1 0
-#define DUK_DBL_IDX_US0 3
-#define DUK_DBL_IDX_US1 2
-#define DUK_DBL_IDX_US2 1
-#define DUK_DBL_IDX_US3 0
-#define DUK_DBL_IDX_UC0 7
-#define DUK_DBL_IDX_UC1 6
-#define DUK_DBL_IDX_UC2 5
-#define DUK_DBL_IDX_UC3 4
-#define DUK_DBL_IDX_UC4 3
-#define DUK_DBL_IDX_UC5 2
-#define DUK_DBL_IDX_UC6 1
-#define DUK_DBL_IDX_UC7 0
-#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
-#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
-#elif defined(DUK_USE_DOUBLE_BE)
-#ifdef DUK_USE_64BIT_OPS
-#define DUK_DBL_IDX_ULL0 0
-#endif
-#define DUK_DBL_IDX_UI0 0
-#define DUK_DBL_IDX_UI1 1
-#define DUK_DBL_IDX_US0 0
-#define DUK_DBL_IDX_US1 1
-#define DUK_DBL_IDX_US2 2
-#define DUK_DBL_IDX_US3 3
-#define DUK_DBL_IDX_UC0 0
-#define DUK_DBL_IDX_UC1 1
-#define DUK_DBL_IDX_UC2 2
-#define DUK_DBL_IDX_UC3 3
-#define DUK_DBL_IDX_UC4 4
-#define DUK_DBL_IDX_UC5 5
-#define DUK_DBL_IDX_UC6 6
-#define DUK_DBL_IDX_UC7 7
-#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
-#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
-#elif defined(DUK_USE_DOUBLE_ME)
-#ifdef DUK_USE_64BIT_OPS
-#define DUK_DBL_IDX_ULL0 0 /* not directly applicable, byte order differs from a double */
-#endif
-#define DUK_DBL_IDX_UI0 0
-#define DUK_DBL_IDX_UI1 1
-#define DUK_DBL_IDX_US0 1
-#define DUK_DBL_IDX_US1 0
-#define DUK_DBL_IDX_US2 3
-#define DUK_DBL_IDX_US3 2
-#define DUK_DBL_IDX_UC0 3
-#define DUK_DBL_IDX_UC1 2
-#define DUK_DBL_IDX_UC2 1
-#define DUK_DBL_IDX_UC3 0
-#define DUK_DBL_IDX_UC4 7
-#define DUK_DBL_IDX_UC5 6
-#define DUK_DBL_IDX_UC6 5
-#define DUK_DBL_IDX_UC7 4
-#define DUK_DBL_IDX_VP0 DUK_DBL_IDX_UI0 /* packed tval */
-#define DUK_DBL_IDX_VP1 DUK_DBL_IDX_UI1 /* packed tval */
-#else
-#error internal error
-#endif
-
-/*
- * Helper macros for reading/writing memory representation parts, used
- * by duk_numconv.c and duk_tval.h.
- */
-
-#define DUK_DBLUNION_SET_DOUBLE(u,v) do { \
- (u)->d = (v); \
- } while (0)
-
-#define DUK_DBLUNION_SET_HIGH32(u,v) do { \
- (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \
- } while (0)
-
-#ifdef DUK_USE_64BIT_OPS
-#ifdef DUK_USE_DOUBLE_ME
-#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
- (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \
- } while (0)
-#else
-#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
- (u)->ull[DUK_DBL_IDX_ULL0] = ((duk_uint64_t) (v)) << 32; \
- } while (0)
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK_DBLUNION_SET_HIGH32_ZERO_LOW32(u,v) do { \
- (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) (v); \
- (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0; \
- } while (0)
-#endif /* DUK_USE_64BIT_OPS */
-
-#define DUK_DBLUNION_SET_LOW32(u,v) do { \
- (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \
- } while (0)
-
-#define DUK_DBLUNION_GET_DOUBLE(u) ((u)->d)
-#define DUK_DBLUNION_GET_HIGH32(u) ((u)->ui[DUK_DBL_IDX_UI0])
-#define DUK_DBLUNION_GET_LOW32(u) ((u)->ui[DUK_DBL_IDX_UI1])
-
-#ifdef DUK_USE_64BIT_OPS
-#ifdef DUK_USE_DOUBLE_ME
-#define DUK_DBLUNION_SET_UINT64(u,v) do { \
- (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) ((v) >> 32); \
- (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) (v); \
- } while (0)
-#define DUK_DBLUNION_GET_UINT64(u) \
- ((((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI0]) << 32) | \
- ((duk_uint64_t) (u)->ui[DUK_DBL_IDX_UI1]))
-#else
-#define DUK_DBLUNION_SET_UINT64(u,v) do { \
- (u)->ull[DUK_DBL_IDX_ULL0] = (duk_uint64_t) (v); \
- } while (0)
-#define DUK_DBLUNION_GET_UINT64(u) ((u)->ull[DUK_DBL_IDX_ULL0])
-#endif
-#define DUK_DBLUNION_SET_INT64(u,v) DUK_DBLUNION_SET_UINT64((u), (duk_uint64_t) (v))
-#define DUK_DBLUNION_GET_INT64(u) ((duk_int64_t) DUK_DBLUNION_GET_UINT64((u)))
-#endif /* DUK_USE_64BIT_OPS */
-
-/*
- * Double NaN manipulation macros related to NaN normalization needed when
- * using the packed duk_tval representation. NaN normalization is necessary
- * to keep double values compatible with the duk_tval format.
- *
- * When packed duk_tval is used, the NaN space is used to store pointers
- * and other tagged values in addition to NaNs. Actual NaNs are normalized
- * to a specific quiet NaN. The macros below are used by the implementation
- * to check and normalize NaN values when they might be created. The macros
- * are essentially NOPs when the non-packed duk_tval representation is used.
- *
- * A FULL check is exact and checks all bits. A NOTFULL check is used by
- * the packed duk_tval and works correctly for all NaNs except those that
- * begin with 0x7ff0. Since the 'normalized NaN' values used with packed
- * duk_tval begin with 0x7ff8, the partial check is reliable when packed
- * duk_tval is used. The 0x7ff8 prefix means the normalized NaN will be a
- * quiet NaN regardless of its remaining lower bits.
- *
- * The ME variant below is specifically for ARM byte order, which has the
- * feature that while doubles have a mixed byte order (32107654), unsigned
- * long long values has a little endian byte order (76543210). When writing
- * a logical double value through a ULL pointer, the 32-bit words need to be
- * swapped; hence the #ifdefs below for ULL writes with DUK_USE_DOUBLE_ME.
- * This is not full ARM support but suffices for some environments.
- */
-
-#ifdef DUK_USE_64BIT_OPS
-#ifdef DUK_USE_DOUBLE_ME
-#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
- (u)->ull[DUK_DBL_IDX_ULL0] = 0x000000007ff80000ULL; \
- } while (0)
-#else
-#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
- (u)->ull[DUK_DBL_IDX_ULL0] = 0x7ff8000000000000ULL; \
- } while (0)
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK__DBLUNION_SET_NAN_FULL(u) do { \
- (u)->ui[DUK_DBL_IDX_UI0] = (duk_uint32_t) 0x7ff80000UL; \
- (u)->ui[DUK_DBL_IDX_UI1] = (duk_uint32_t) 0x00000000UL; \
- } while (0)
-#endif /* DUK_USE_64BIT_OPS */
-
-#define DUK__DBLUNION_SET_NAN_NOTFULL(u) do { \
- (u)->us[DUK_DBL_IDX_US0] = 0x7ff8UL; \
- } while (0)
-
-#ifdef DUK_USE_64BIT_OPS
-#ifdef DUK_USE_DOUBLE_ME
-#define DUK__DBLUNION_IS_NAN_FULL(u) \
- /* E == 0x7ff, F != 0 => NaN */ \
- ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
- ((((u)->ull[DUK_DBL_IDX_ULL0]) & 0xffffffff000fffffULL) != 0))
-#else
-#define DUK__DBLUNION_IS_NAN_FULL(u) \
- /* E == 0x7ff, F != 0 => NaN */ \
- ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
- ((((u)->ull[DUK_DBL_IDX_ULL0]) & 0x000fffffffffffffULL) != 0))
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK__DBLUNION_IS_NAN_FULL(u) \
- /* E == 0x7ff, F != 0 => NaN */ \
- ((((u)->ui[DUK_DBL_IDX_UI0] & 0x7ff00000UL) == 0x7ff00000UL) && \
- (((u)->ui[DUK_DBL_IDX_UI0] & 0x000fffffUL) != 0 || \
- (u)->ui[DUK_DBL_IDX_UI1] != 0))
-#endif /* DUK_USE_64BIT_OPS */
-
-#define DUK__DBLUNION_IS_NAN_NOTFULL(u) \
- /* E == 0x7ff, topmost four bits of F != 0 => assume NaN */ \
- ((((u)->us[DUK_DBL_IDX_US0] & 0x7ff0UL) == 0x7ff0UL) && \
- (((u)->us[DUK_DBL_IDX_US0] & 0x000fUL) != 0x0000UL))
-
-#ifdef DUK_USE_64BIT_OPS
-#ifdef DUK_USE_DOUBLE_ME
-#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
- ((u)->ull[DUK_DBL_IDX_ULL0] == 0x000000007ff80000ULL)
-#else
-#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
- ((u)->ull[DUK_DBL_IDX_ULL0] == 0x7ff8000000000000ULL)
-#endif
-#else /* DUK_USE_64BIT_OPS */
-#define DUK__DBLUNION_IS_NORMALIZED_NAN_FULL(u) \
- (((u)->ui[DUK_DBL_IDX_UI0] == 0x7ff80000UL) && \
- ((u)->ui[DUK_DBL_IDX_UI1] == 0x00000000UL))
-#endif /* DUK_USE_64BIT_OPS */
-
-#define DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL(u) \
- /* E == 0x7ff, F == 8 => normalized NaN */ \
- ((u)->us[DUK_DBL_IDX_US0] == 0x7ff8UL)
-
-#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL(u) do { \
- if (DUK__DBLUNION_IS_NAN_FULL((u))) { \
- DUK__DBLUNION_SET_NAN_FULL((u)); \
- } \
- } while (0)
-
-#define DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL(u) do { \
- if (DUK__DBLUNION_IS_NAN_NOTFULL((u))) { \
- DUK__DBLUNION_SET_NAN_NOTFULL((u)); \
- } \
- } while (0)
-
-/* Concrete macros for NaN handling used by the implementation internals.
- * Chosen so that they match the duk_tval representation: with a packed
- * duk_tval, ensure NaNs are properly normalized; with a non-packed duk_tval
- * these are essentially NOPs.
- */
-
-#if defined(DUK_USE_PACKED_TVAL)
-#if defined(DUK_USE_FULL_TVAL)
-#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_FULL((u))
-#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_FULL((u))
-#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_FULL((u))
-#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_FULL((d))
-#else
-#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) DUK__DBLUNION_NORMALIZE_NAN_CHECK_NOTFULL((u))
-#define DUK_DBLUNION_IS_NAN(u) DUK__DBLUNION_IS_NAN_NOTFULL((u))
-#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) DUK__DBLUNION_IS_NORMALIZED_NAN_NOTFULL((u))
-#define DUK_DBLUNION_SET_NAN(d) DUK__DBLUNION_SET_NAN_NOTFULL((d))
-#endif
-#define DUK_DBLUNION_IS_NORMALIZED(u) \
- (!DUK_DBLUNION_IS_NAN((u)) || /* either not a NaN */ \
- DUK_DBLUNION_IS_NORMALIZED_NAN((u))) /* or is a normalized NaN */
-#else /* DUK_USE_PACKED_TVAL */
-#define DUK_DBLUNION_NORMALIZE_NAN_CHECK(u) /* nop: no need to normalize */
-#define DUK_DBLUNION_IS_NAN(u) (DUK_ISNAN((u)->d))
-#define DUK_DBLUNION_IS_NORMALIZED_NAN(u) (DUK_ISNAN((u)->d))
-#define DUK_DBLUNION_IS_NORMALIZED(u) 1 /* all doubles are considered normalized */
-#define DUK_DBLUNION_SET_NAN(u) do { \
- /* in non-packed representation we don't care about which NaN is used */ \
- (u)->d = DUK_DOUBLE_NAN; \
- } while (0)
-#endif /* DUK_USE_PACKED_TVAL */
-
-/* XXX: native 64-bit byteswaps when available */
-
-/* 64-bit byteswap, same operation independent of target endianness. */
-#define DUK_DBLUNION_BSWAP64(u) do { \
- duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \
- duk__bswaptmp1 = (u)->ui[0]; \
- duk__bswaptmp2 = (u)->ui[1]; \
- duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \
- duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \
- (u)->ui[0] = duk__bswaptmp2; \
- (u)->ui[1] = duk__bswaptmp1; \
- } while (0)
-
-/* Byteswap an IEEE double in the duk_double_union from host to network
- * order. For a big endian target this is a no-op.
- */
-#if defined(DUK_USE_DOUBLE_LE)
-#define DUK_DBLUNION_DOUBLE_HTON(u) do { \
- duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \
- duk__bswaptmp1 = (u)->ui[0]; \
- duk__bswaptmp2 = (u)->ui[1]; \
- duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \
- duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \
- (u)->ui[0] = duk__bswaptmp2; \
- (u)->ui[1] = duk__bswaptmp1; \
- } while (0)
-#elif defined(DUK_USE_DOUBLE_ME)
-#define DUK_DBLUNION_DOUBLE_HTON(u) do { \
- duk_uint32_t duk__bswaptmp1, duk__bswaptmp2; \
- duk__bswaptmp1 = (u)->ui[0]; \
- duk__bswaptmp2 = (u)->ui[1]; \
- duk__bswaptmp1 = DUK_BSWAP32(duk__bswaptmp1); \
- duk__bswaptmp2 = DUK_BSWAP32(duk__bswaptmp2); \
- (u)->ui[0] = duk__bswaptmp1; \
- (u)->ui[1] = duk__bswaptmp2; \
- } while (0)
-#elif defined(DUK_USE_DOUBLE_BE)
-#define DUK_DBLUNION_DOUBLE_HTON(u) do { } while (0)
-#else
-#error internal error, double endianness insane
-#endif
-
-/* Reverse operation is the same. */
-#define DUK_DBLUNION_DOUBLE_NTOH(u) DUK_DBLUNION_DOUBLE_HTON((u))
-
-#endif /* DUK_DBLUNION_H_INCLUDED */
-
-#endif /* DUKTAPE_H_INCLUDED */
diff --git a/javascript/duktape/netsurf.bnd b/javascript/duktape/netsurf.bnd
deleted file mode 100644
index 4aca4752f..000000000
--- a/javascript/duktape/netsurf.bnd
+++ /dev/null
@@ -1,200 +0,0 @@
-/* Binding for browser using duktape and libdom
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- *
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- *
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-binding duk_libdom {
- webidl "dom.idl";
- webidl "dom-parsing.idl";
- webidl "html.idl";
- webidl "cssom.idl";
- webidl "uievents.idl";
- webidl "urlutils.idl";
- webidl "console.idl";
-
- preface %{
-/* DukTape JavaScript bindings for NetSurf browser
- *
- * Copyright 2015 Vincent Sanders <vince@netsurf-browser.org>
- * This file is part of NetSurf, http://www.netsurf-browser.org/
- * Released under the terms of the MIT License,
- * http://www.opensource.org/licenses/mit-license
- */
-
-#include <dom/dom.h>
-
-#include "utils/log.h"
-#include "utils/nsurl.h"
-
-#include "javascript/duktape/duktape.h"
-
-struct browser_window;
-struct html_content;
-struct dom_node;
-struct dom_element;
-struct dom_document;
-struct dom_html_element;
-struct dom_node_character_data;
-struct dom_node_text;
-struct dom_node_list;
-struct dom_node_comment;
-struct dom_html_collection;
-struct dom_html_br_element;
-
-%};
-
- prologue %{
-#include "javascript/duktape/dukky.h"
-%};
-
-};
-
-#include "Console.bnd"
-#include "Window.bnd"
-#include "Document.bnd"
-#include "Node.bnd"
-#include "NodeList.bnd"
-#include "Element.bnd"
-#include "HTMLCollection.bnd"
-#include "Location.bnd"
-#include "Navigator.bnd"
-
-/* events */
-
-#include "Event.bnd"
-
-init MutationEvent(struct dom_mutation_event *evt::evt);
-init UIEvent(struct dom_ui_event *evt::evt);
-init TextEvent(struct dom_text_event *evt::evt);
-init MutationNameEvent(struct dom_mutation_name_event *evt::evt);
-init MouseWheelEvent(struct dom_mouse_wheel_event *evt::evt);
-init MouseMultiWheelEvent(struct dom_mouse_multi_wheel_event *evt::evt);
-init MouseEvent(struct dom_mouse_event *evt::evt);
-init KeyboardEvent(struct dom_keyboard_event *evt::evt);
-init DocumentEvent(struct dom_document_event *evt::evt);
-init CustomEvent(struct dom_custom_event *evt::evt);
-init CompositionEvent(struct dom_ui_event *evt::evt);
-init WheelEvent(struct dom_mouse_event *evt::evt);
-init FocusEvent(struct dom_ui_event *evt::evt);
-init StorageEvent(struct dom_event *evt::evt);
-init CloseEvent(struct dom_event *evt::evt);
-init MessageEvent(struct dom_event *evt::evt);
-init ErrorEvent(struct dom_event *evt::evt);
-init BeforeUnloadEvent(struct dom_event *evt::evt);
-init PageTransitionEvent(struct dom_event *evt::evt);
-init HashChangeEvent(struct dom_event *evt::evt);
-init PopStateEvent(struct dom_event *evt::evt);
-init DragEvent(struct dom_mouse_event *evt::evt);
-init RelatedEvent(struct dom_event *evt::evt);
-init AutocompleteErrorEvent(struct dom_event *evt::evt);
-init TrackEvent(struct dom_event *evt::evt);
-
-
-/* html elements */
-#include "HTMLElement.bnd"
-
-/* specialisations of html_element */
-#include "HTMLAnchorElement.bnd"
-#include "HTMLAppletElement.bnd"
-#include "HTMLAreaElement.bnd"
-#include "HTMLBaseElement.bnd"
-#include "HTMLBodyElement.bnd"
-#include "HTMLButtonElement.bnd"
-#include "HTMLBRElement.bnd"
-#include "HTMLDivElement.bnd"
-#include "HTMLFontElement.bnd"
-#include "HTMLFormElement.bnd"
-#include "HTMLFrameElement.bnd"
-#include "HTMLFrameSetElement.bnd"
-#include "HTMLHeadingElement.bnd"
-#include "HTMLHRElement.bnd"
-#include "HTMLHTMLElement.bnd"
-#include "HTMLIFrameElement.bnd"
-#include "HTMLImageElement.bnd"
-#include "HTMLInputElement.bnd"
-#include "HTMLLabelElement.bnd"
-#include "HTMLLegendElement.bnd"
-#include "HTMLLIElement.bnd"
-#include "HTMLLinkElement.bnd"
-#include "HTMLMapElement.bnd"
-#include "HTMLMarqueeElement.bnd"
-#include "HTMLMenuElement.bnd"
-#include "HTMLMetaElement.bnd"
-#include "HTMLObjectElement.bnd"
-#include "HTMLOptionElement.bnd"
-#include "HTMLOListElement.bnd"
-#include "HTMLParagraphElement.bnd"
-#include "HTMLParamElement.bnd"
-#include "HTMLPreElement.bnd"
-#include "HTMLQuoteElement.bnd"
-#include "HTMLScriptElement.bnd"
-#include "HTMLSelectElement.bnd"
-#include "HTMLStyleElement.bnd"
-#include "HTMLTableCaptionElement.bnd"
-#include "HTMLTableCellElement.bnd"
-#include "HTMLTableColElement.bnd"
-#include "HTMLTableElement.bnd"
-#include "HTMLTableRowElement.bnd"
-#include "HTMLTableSectionElement.bnd"
-#include "HTMLTextAreaElement.bnd"
-#include "HTMLTitleElement.bnd"
-
-init HTMLUnknownElement(struct dom_html_element *html_unknown_element::html_element);
-init HTMLDirectoryElement(struct dom_html_element *html_directory_element::html_element);
-init HTMLCanvasElement(struct dom_html_element *html_canvas_element::html_element);
-init HTMLTemplateElement(struct dom_html_element *html_template_element::html_element);
-init HTMLDialogElement(struct dom_html_element *html_dialog_element::html_element);
-init HTMLMenuItemElement(struct dom_html_element *html_menu_item_element::html_element);
-init HTMLDetailsElement(struct dom_html_element *html_details_element::html_element);
-init HTMLFieldSetElement(struct dom_html_element *html_field_set_element::html_element);
-init HTMLMeterElement(struct dom_html_element *html_meter_element::html_element);
-init HTMLProgressElement(struct dom_html_element *html_progress_element::html_element);
-init HTMLOutputElement(struct dom_html_element *html_output_element::html_element);
-init HTMLKeygenElement(struct dom_html_element *html_keygen_element::html_element);
-init HTMLOptGroupElement(struct dom_html_element *html_opt_group_element::html_element);
-init HTMLDataListElement(struct dom_html_element *html_data_list_element::html_element);
-init HTMLMediaElement(struct dom_html_element *html_media_element::html_element);
-init HTMLTrackElement(struct dom_html_element *html_track_element::html_element);
-init HTMLEmbedElement(struct dom_html_element *html_embed_element::html_element);
-init HTMLSourceElement(struct dom_html_element *html_source_element::html_element);
-init HTMLPictureElement(struct dom_html_element *html_picture_element::html_element);
-init HTMLModElement(struct dom_html_element *html_mod_element::html_element);
-init HTMLSpanElement(struct dom_html_element *html_span_element::html_element);
-init HTMLTimeElement(struct dom_html_element *html_time_element::html_element);
-init HTMLDataElement(struct dom_html_element *html_data_element::html_element);
-init HTMLDListElement(struct dom_html_element *html_d_list_element::html_element);
-init HTMLUListElement(struct dom_html_element *html_u_list_element::html_element);
-init HTMLHeadElement(struct dom_html_element *html_head_element::html_element);
-
-/* specialisations of HTMLTableCellElement */
-init HTMLTableHeaderCellElement(struct dom_html_element *html_table_header_cell_element::html_table_cell_element);
-init HTMLTableDataCellElement(struct dom_html_element *html_table_data_cell_element::html_table_cell_element);
-
-/* specialisations of html_media_element */
-init HTMLAudioElement(struct dom_html_element *html_audio_element::html_media_element);
-init HTMLVideoElement(struct dom_html_element *html_video_element::html_media_element);
-
-init Text(struct dom_node_text *text::character_data);
-init Comment(struct dom_node_comment *comment::character_data);
-init ProcessingInstruction(struct dom_node_text *text::character_data);
-
-init XMLDocument(struct dom_document *document);
-
-init CharacterData(struct dom_node_character_data *character_data::node);
-init DocumentFragment(struct dom_document *document::node);
-init DocumentType(struct dom_document *document::node);
-
-init PropertyNodeList(struct dom_nodelist *nodes);
-init RadioNodeList(struct dom_nodelist *nodes);
-
-init HTMLAllCollection(struct dom_html_collection *coll);
-init HTMLFormControlsCollection(struct dom_html_collection *coll);
-init HTMLOptionsCollection(struct dom_html_collection *coll);
-init HTMLPropertiesCollection(struct dom_html_collection *coll);
-
-