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/* duktape binding generation implementation
*
* 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 <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <errno.h>
#include <ctype.h>
#include "options.h"
#include "utils.h"
#include "nsgenbind-ast.h"
#include "webidl-ast.h"
#include "ir.h"
#include "duk-libdom.h"
/** prefix for all generated functions */
#define DLPFX "dukky"
#define MAGICPFX "\\xFF\\xFFNETSURF_DUKTAPE_"
/**
* get default value as a string
*/
static int
get_member_default_str(struct ir_entry *dictionarye,
struct ir_operation_argument_entry *membere,
enum webidl_type member_type,
char **defl_out)
{
struct webidl_node *lit_node;
enum webidl_node_type lit_type;
int *lit_int;
float *lit_flt;
lit_node = webidl_node_getnode(
webidl_node_find_type(
webidl_node_getnode(membere->node),
NULL,
WEBIDL_NODE_TYPE_OPTIONAL));
if (lit_node == NULL) {
*defl_out = NULL;
return 0;
}
lit_type = webidl_node_gettype(lit_node);
switch (lit_type) {
case WEBIDL_NODE_TYPE_LITERAL_BOOL:
if (member_type != WEBIDL_TYPE_BOOL) {
fprintf(stderr,
"Dictionary %s:%s literal boolean type mismatch\n",
dictionarye->name,
membere->name);
return -1;
}
lit_int = webidl_node_getint(lit_node);
if (*lit_int == 0) {
*defl_out = strdup("false");
} else {
*defl_out = strdup("true");
}
break;
case WEBIDL_NODE_TYPE_LITERAL_NULL:
*defl_out = strdup("NULL");
break;
case WEBIDL_NODE_TYPE_LITERAL_STRING:
*defl_out = strdup(webidl_node_gettext(lit_node));
break;
case WEBIDL_NODE_TYPE_LITERAL_INT:
lit_int = webidl_node_getint(lit_node);
*defl_out = malloc(128);
sprintf(*defl_out, "%d", *lit_int);
break;
case WEBIDL_NODE_TYPE_LITERAL_FLOAT:
lit_flt = webidl_node_getfloat(lit_node);
*defl_out = malloc(128);
sprintf(*defl_out, "%f", *lit_flt);
break;
default:
*defl_out = NULL;
break;
}
return 0;
}
/**
* generate a single class method for an interface operation
*/
static int
output_member_acessor(FILE* outf,
struct ir_entry *dictionarye,
struct ir_operation_argument_entry *membere)
{
struct webidl_node *type_node;
enum webidl_type *argument_type;
char *defl; /* default for member */
int res;
type_node = webidl_node_find_type(
webidl_node_getnode(membere->node),
NULL,
WEBIDL_NODE_TYPE_TYPE);
if (type_node == NULL) {
fprintf(stderr, "%s:%s has no type\n",
dictionarye->name,
membere->name);
return -1;
}
argument_type = (enum webidl_type *)webidl_node_getint(
webidl_node_find_type(
webidl_node_getnode(type_node),
NULL,
WEBIDL_NODE_TYPE_TYPE_BASE));
if (argument_type == NULL) {
fprintf(stderr,
"%s:%s has no type base\n",
dictionarye->name,
membere->name);
return -1;
}
/* get default text */
res = get_member_default_str(dictionarye, membere, *argument_type, &defl);
if (res != 0) {
return res;
}
switch (*argument_type) {
case WEBIDL_TYPE_STRING:
fprintf(outf,
"const char *\n"
"%s_%s_get_%s(duk_context *ctx, duk_idx_t idx)\n"
"{\n",
DLPFX, dictionarye->class_name, membere->name);
if (defl == NULL) {
fprintf(outf,
"\tconst char *ret = NULL; /* No default */\n");
} else {
fprintf(outf,
"\tconst char *ret = \"%s\"; /* Default value of %s */\n",
defl, membere->name);
}
fprintf(outf,
"\t/* ... obj@idx ... */\n"
"\tduk_get_prop_string(ctx, idx, \"%s\");\n"
"\t/* ... obj@idx ... value/undefined */\n"
"\tif (!duk_is_undefined(ctx, -1)) {\n"
"\t\t/* Note, this throws a duk_error if it's not a string */\n"
"\t\tret = duk_require_string(ctx, -1);\n"
"\t}\n"
"\tduk_pop(ctx);\n"
"\treturn ret;\n"
"}\n\n",
membere->name);
break;
case WEBIDL_TYPE_BOOL:
fprintf(outf,
"duk_bool_t\n"
"%s_%s_get_%s(duk_context *ctx, duk_idx_t idx)\n"
"{\n",
DLPFX, dictionarye->class_name, membere->name);
if (defl == NULL) {
fprintf(outf,
"\tduk_bool_t ret = false; /* No default */\n");
} else {
fprintf(outf,
"\tduk_bool_t ret = %s; /* Default value of %s */\n",
defl, membere->name);
}
fprintf(outf,
"\t/* ... obj@idx ... */\n"
"\tduk_get_prop_string(ctx, idx, \"%s\");\n"
"\t/* ... obj@idx ... value/undefined */\n"
"\tif (!duk_is_undefined(ctx, -1)) {\n"
"\t\t/* Note, this throws a duk_error if it's not a boolean */\n"
"\t\tret = duk_require_boolean(ctx, -1);\n"
"\t}\n"
"\tduk_pop(ctx);\n"
"\treturn ret;\n"
"}\n\n",
membere->name);
break;
case WEBIDL_TYPE_SHORT:
case WEBIDL_TYPE_LONG:
case WEBIDL_TYPE_LONGLONG:
fprintf(outf,
"duk_int_t\n"
"%s_%s_get_%s(duk_context *ctx, duk_idx_t idx)\n"
"{\n",
DLPFX, dictionarye->class_name, membere->name);
if (defl == NULL) {
fprintf(outf, "\tduk_int_t ret = 0; /* No default */\n");
} else {
fprintf(outf,
"\tduk_int_t ret = %s; /* Default value of %s */\n",
defl, membere->name);
}
fprintf(outf,
"\t/* ... obj@idx ... */\n"
"\tduk_get_prop_string(ctx, idx, \"%s\");\n"
"\t/* ... obj@idx ... value/undefined */\n"
"\tif (!duk_is_undefined(ctx, -1)) {\n"
"\t\t/* Note, this throws a duk_error if it's not a int */\n"
"\t\tret = duk_require_int(ctx, -1);\n"
"\t}\n"
"\tduk_pop(ctx);\n"
"\treturn ret;\n"
"}\n\n",
membere->name);
break;
case WEBIDL_TYPE_FLOAT:
case WEBIDL_TYPE_DOUBLE:
fprintf(outf,
"duk_double_t\n"
"%s_%s_get_%s(duk_context *ctx, duk_idx_t idx)\n",
DLPFX, dictionarye->class_name, membere->name);
fprintf(outf,
"{\n"
"\tduk_double_t ret = %s; /* Default value of %s */\n"
"\t/* ... obj@idx ... */\n"
"\tduk_get_prop_string(ctx, idx, \"%s\");\n",
defl, membere->name, membere->name);
fprintf(outf,
"\t/* ... obj@idx ... value/undefined */\n"
"\tif (!duk_is_undefined(ctx, -1)) {\n"
"\t\t/* Note, this throws a duk_error if it's not a number */\n"
"\t\tret = duk_require_number(ctx, -1);\n"
"\t}\n"
"\tduk_pop(ctx);\n"
"\treturn ret;\n"
"}\n\n");
break;
default:
WARN(WARNING_UNIMPLEMENTED,
"Dictionary %s:%s unhandled type (%d)",
dictionarye->name,
membere->name,
*argument_type);
fprintf(outf,
"/* Dictionary %s:%s unhandled type (%d) */\n\n",
dictionarye->name,
membere->name,
*argument_type);
}
if (defl != NULL) {
free(defl);
}
return 0;
}
static int
output_member_acessors(FILE* outf, struct ir_entry *dictionarye)
{
int memberc;
int res = 0;
for (memberc = 0;
memberc < dictionarye->u.dictionary.memberc;
memberc++) {
res = output_member_acessor(
outf,
dictionarye,
dictionarye->u.dictionary.memberv + memberc);
if (res != 0) {
break;
}
}
return res;
}
/* exported function documented in duk-libdom.h */
int output_dictionary(struct ir *ir, struct ir_entry *dictionarye)
{
FILE *ifacef;
int res = 0;
/* open output file */
ifacef = genb_fopen_tmp(dictionarye->filename);
if (ifacef == NULL) {
return -1;
}
/* tool preface */
output_tool_preface(ifacef);
/* binding preface */
output_method_cdata(ifacef,
ir->binding_node,
GENBIND_METHOD_TYPE_PREFACE);
/* class preface */
output_method_cdata(ifacef,
dictionarye->class,
GENBIND_METHOD_TYPE_PREFACE);
/* tool prologue */
output_tool_prologue(ifacef);
/* binding prologue */
output_method_cdata(ifacef,
ir->binding_node,
GENBIND_METHOD_TYPE_PROLOGUE);
/* class prologue */
output_method_cdata(ifacef,
dictionarye->class,
GENBIND_METHOD_TYPE_PROLOGUE);
fprintf(ifacef, "\n");
res = output_member_acessors(ifacef, dictionarye);
if (res != 0) {
goto op_error;
}
fprintf(ifacef, "\n");
/* class epilogue */
output_method_cdata(ifacef,
dictionarye->class,
GENBIND_METHOD_TYPE_EPILOGUE);
/* binding epilogue */
output_method_cdata(ifacef,
ir->binding_node,
GENBIND_METHOD_TYPE_EPILOGUE);
/* class postface */
output_method_cdata(ifacef,
dictionarye->class,
GENBIND_METHOD_TYPE_POSTFACE);
/* binding postface */
output_method_cdata(ifacef,
ir->binding_node,
GENBIND_METHOD_TYPE_POSTFACE);
op_error:
genb_fclose_tmp(ifacef, dictionarye->filename);
return res;
}
/**
* generate a single class method declaration for an interface operation
*/
static int
output_member_declaration(FILE* outf,
struct ir_entry *dictionarye,
struct ir_operation_argument_entry *membere)
{
struct webidl_node *type_node;
enum webidl_type *argument_type;
type_node = webidl_node_find_type(
webidl_node_getnode(membere->node),
NULL,
WEBIDL_NODE_TYPE_TYPE);
if (type_node == NULL) {
fprintf(stderr, "%s:%s has no type\n",
dictionarye->name,
membere->name);
return -1;
}
argument_type = (enum webidl_type *)webidl_node_getint(
webidl_node_find_type(
webidl_node_getnode(type_node),
NULL,
WEBIDL_NODE_TYPE_TYPE_BASE));
if (argument_type == NULL) {
fprintf(stderr,
"%s:%s has no type base\n",
dictionarye->name,
membere->name);
return -1;
}
switch (*argument_type) {
case WEBIDL_TYPE_STRING:
fprintf(outf,
"const char *%s_%s_get_%s(duk_context *ctx, duk_idx_t idx);\n",
DLPFX, dictionarye->class_name, membere->name);
break;
case WEBIDL_TYPE_BOOL:
fprintf(outf,
"duk_bool_t %s_%s_get_%s(duk_context *ctx, duk_idx_t idx);\n",
DLPFX, dictionarye->class_name, membere->name);
break;
case WEBIDL_TYPE_SHORT:
case WEBIDL_TYPE_LONG:
case WEBIDL_TYPE_LONGLONG:
fprintf(outf,
"duk_int_t %s_%s_get_%s(duk_context *ctx, duk_idx_t idx);\n",
DLPFX, dictionarye->class_name, membere->name);
break;
case WEBIDL_TYPE_FLOAT:
case WEBIDL_TYPE_DOUBLE:
fprintf(outf,
"duk_double_t %s_%s_get_%s(duk_context *ctx, duk_idx_t idx);\n",
DLPFX, dictionarye->class_name, membere->name);
break;
default:
fprintf(outf,
"/* Dictionary %s:%s unhandled type (%d) */\n",
dictionarye->name,
membere->name,
*argument_type);
}
return 0;
}
/* exported function documented in duk-libdom.h */
int output_dictionary_declaration(FILE* outf, struct ir_entry *dictionarye)
{
int memberc;
int res = 0;
for (memberc = 0;
memberc < dictionarye->u.dictionary.memberc;
memberc++) {
res = output_member_declaration(
outf,
dictionarye,
dictionarye->u.dictionary.memberv + memberc);
if (res != 0) {
break;
}
}
return res;
}
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