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/* const property generation
*
* This file is part of nsgenbind.
* Licensed under the MIT License,
* http://www.opensource.org/licenses/mit-license.php
* Copyright 2012 Vincent Sanders <vince@netsurf-browser.org>
*/
#include <stdbool.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include "options.h"
#include "nsgenbind-ast.h"
#include "webidl-ast.h"
#include "jsapi-libdom.h"
static int output_cast_literal(struct binding *binding,
struct webidl_node *node)
{
struct webidl_node *type_node = NULL;
struct webidl_node *literal_node = NULL;
struct webidl_node *type_base = NULL;
enum webidl_type webidl_arg_type;
type_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_TYPE);
type_base = webidl_node_find_type(webidl_node_getnode(type_node),
NULL,
WEBIDL_NODE_TYPE_TYPE_BASE);
webidl_arg_type = webidl_node_getint(type_base);
switch (webidl_arg_type) {
case WEBIDL_TYPE_BOOL:
/* JSBool */
literal_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_LITERAL_BOOL);
fprintf(binding->outfile, "BOOLEAN_TO_JSVAL(JS_FALSE)");
break;
case WEBIDL_TYPE_FLOAT:
case WEBIDL_TYPE_DOUBLE:
/* double */
literal_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_LITERAL_FLOAT);
fprintf(binding->outfile, "DOUBLE_TO_JSVAL(0.0)");
break;
case WEBIDL_TYPE_LONG:
/* int32_t */
literal_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_LITERAL_INT);
fprintf(binding->outfile,
"INT_TO_JSVAL(%d)",
webidl_node_getint(literal_node));
break;
case WEBIDL_TYPE_SHORT:
/* int16_t */
literal_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_LITERAL_INT);
fprintf(binding->outfile,
"INT_TO_JSVAL(%d)",
webidl_node_getint(literal_node));
break;
case WEBIDL_TYPE_STRING:
case WEBIDL_TYPE_BYTE:
case WEBIDL_TYPE_OCTET:
case WEBIDL_TYPE_LONGLONG:
case WEBIDL_TYPE_SEQUENCE:
case WEBIDL_TYPE_OBJECT:
case WEBIDL_TYPE_DATE:
case WEBIDL_TYPE_VOID:
case WEBIDL_TYPE_USER:
default:
WARN(WARNING_UNIMPLEMENTED, "types not allowed as literal");
break; /* @todo these types are not allowed here */
}
return 0;
}
static int webidl_const_define_cb(struct webidl_node *node, void *ctx)
{
struct binding *binding = ctx;
struct webidl_node *ident_node;
ident_node = webidl_node_find_type(webidl_node_getnode(node),
NULL,
WEBIDL_NODE_TYPE_IDENT);
if (ident_node == NULL) {
/* Broken AST - must have ident */
return 1;
}
fprintf(binding->outfile,
"\tJS_DefineProperty(cx,\n"
"\t\tprototype,\n"
"\t\t\"%s\",\n"
"\t\t",
webidl_node_gettext(ident_node));
output_cast_literal(binding, node);
fprintf(binding->outfile,
",\n"
"\t\tJS_PropertyStub,\n"
"\t\tJS_StrictPropertyStub,\n"
"\t\tJSPROP_READONLY | JSPROP_ENUMERATE | JSPROP_PERMANENT);\n\n");
return 0;
}
/* callback to emit implements property spec */
static int webidl_const_spec_implements_cb(struct webidl_node *node, void *ctx)
{
struct binding *binding = ctx;
return output_const_defines(binding, webidl_node_gettext(node));
}
int
output_const_defines(struct binding *binding, const char *interface)
{
struct webidl_node *interface_node;
struct webidl_node *members_node;
struct webidl_node *inherit_node;
int res = 0;
/* find interface in webidl with correct ident attached */
interface_node = webidl_node_find_type_ident(binding->wi_ast,
WEBIDL_NODE_TYPE_INTERFACE,
interface);
if (interface_node == NULL) {
fprintf(stderr,
"Unable to find interface %s in loaded WebIDL\n",
interface);
return -1;
}
/* generate property entries for each list (partial interfaces) */
members_node = webidl_node_find_type(webidl_node_getnode(interface_node),
NULL,
WEBIDL_NODE_TYPE_LIST);
while (members_node != NULL) {
fprintf(binding->outfile,"\t/**** %s ****/\n", interface);
/* for each const emit a property define */
webidl_node_for_each_type(webidl_node_getnode(members_node),
WEBIDL_NODE_TYPE_CONST,
webidl_const_define_cb,
binding);
members_node = webidl_node_find_type(webidl_node_getnode(interface_node),
members_node,
WEBIDL_NODE_TYPE_LIST);
}
/* check for inherited nodes and insert them too */
inherit_node = webidl_node_find(webidl_node_getnode(interface_node),
NULL,
webidl_cmp_node_type,
(void *)WEBIDL_NODE_TYPE_INTERFACE_INHERITANCE);
if (inherit_node != NULL) {
res = output_const_defines(binding,
webidl_node_gettext(inherit_node));
}
if (res == 0) {
res = webidl_node_for_each_type(webidl_node_getnode(interface_node),
WEBIDL_NODE_TYPE_INTERFACE_IMPLEMENTS,
webidl_const_spec_implements_cb,
binding);
}
return res;
}
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