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/* -*- mode: C; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
/*
* Copyright (c) 2010 litl, LLC
*
* 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.
*/
#include <config.h>
#include <string.h>
#include <gjs/gjs-module.h>
#include <gjs/compat.h>
#include <girepository.h>
#include "arg.h"
#include "foreign.h"
static struct {
char *namespace;
char *module; // relative to "imports."
gboolean loaded;
} foreign_modules[] = {
{ "cairo", "cairo", FALSE },
{ NULL }
};
static GHashTable* foreign_structs_table = NULL;
static GHashTable*
get_foreign_structs(void)
{
// FIXME: look into hasing on GITypeInfo instead.
if (!foreign_structs_table) {
foreign_structs_table = g_hash_table_new_full(g_str_hash, g_str_equal,
(GDestroyNotify)g_free,
NULL);
}
return foreign_structs_table;
}
static JSBool
gjs_foreign_load_foreign_module(JSContext *context,
const gchar *namespace)
{
int i;
for (i = 0; foreign_modules[i].namespace; ++i) {
int code;
GError *error = NULL;
char *script;
if (strcmp(namespace, foreign_modules[i].namespace) != 0)
continue;
if (foreign_modules[i].loaded) {
return JS_TRUE;
}
// FIXME: Find a way to check if a module is imported
// and only execute this statement if isn't
script = g_strdup_printf("imports.%s;", namespace);
if (!gjs_context_eval(JS_GetContextPrivate(context), script, strlen(script),
"<internal>", &code,
&error)) {
g_printerr("ERROR: %s\n", error->message);
g_free(script);
g_error_free(error);
return JS_FALSE;
}
g_free(script);
foreign_modules[i].loaded = TRUE;
}
return JS_TRUE;
}
JSBool
gjs_struct_foreign_register(const char *namespace,
const char *type_name,
GjsForeignInfo *info)
{
char *canonical_name;
g_return_val_if_fail(info != NULL, JS_FALSE);
g_return_val_if_fail(info->to_func != NULL, JS_FALSE);
g_return_val_if_fail(info->from_func != NULL, JS_FALSE);
canonical_name = g_strdup_printf("%s.%s", namespace, type_name);
g_hash_table_insert(get_foreign_structs(), canonical_name, info);
return JS_TRUE;
}
static GjsForeignInfo *
gjs_struct_foreign_lookup(JSContext *context,
GIBaseInfo *interface_info)
{
GjsForeignInfo *retval = NULL;
GHashTable *hash_table;
char *key;
key = g_strdup_printf("%s.%s",
g_base_info_get_namespace(interface_info),
g_base_info_get_name(interface_info));
hash_table = get_foreign_structs();
retval = (GjsForeignInfo*)g_hash_table_lookup(hash_table, key);
if (!retval) {
if (gjs_foreign_load_foreign_module(context, g_base_info_get_namespace(interface_info))) {
retval = (GjsForeignInfo*)g_hash_table_lookup(hash_table, key);
}
}
if (!retval) {
gjs_throw(context, "Unable to find module implementing foreign type %s.%s",
g_base_info_get_namespace(interface_info),
g_base_info_get_name(interface_info));
}
g_free(key);
return retval;
}
JSBool
gjs_struct_foreign_convert_to_g_argument(JSContext *context,
jsval value,
GIBaseInfo *interface_info,
const char *arg_name,
GjsArgumentType argument_type,
GITransfer transfer,
gboolean may_be_null,
GArgument *arg)
{
GjsForeignInfo *foreign;
foreign = gjs_struct_foreign_lookup(context, interface_info);
if (!foreign)
return JS_FALSE;
if (!foreign->to_func(context, value, arg_name,
argument_type, transfer, may_be_null, arg))
return JS_FALSE;
return JS_TRUE;
}
JSBool
gjs_struct_foreign_convert_from_g_argument(JSContext *context,
jsval *value_p,
GIBaseInfo *interface_info,
GArgument *arg)
{
GjsForeignInfo *foreign;
foreign = gjs_struct_foreign_lookup(context, interface_info);
if (!foreign)
return JS_FALSE;
if (!foreign->from_func(context, value_p, arg))
return JS_FALSE;
return JS_TRUE;
}
JSBool
gjs_struct_foreign_release_g_argument(JSContext *context,
GITransfer transfer,
GIBaseInfo *interface_info,
GArgument *arg)
{
GjsForeignInfo *foreign;
foreign = gjs_struct_foreign_lookup(context, interface_info);
if (!foreign)
return JS_FALSE;
if (!foreign->release_func)
return JS_TRUE;
if (!foreign->release_func(context, transfer, arg))
return JS_FALSE;
return JS_TRUE;
}
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