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/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil; -*- */
// SPDX-License-Identifier: MIT OR LGPL-2.0-or-later
// SPDX-FileCopyrightText: 2010 litl, LLC
#include <config.h>
#include <string.h> // for strcmp
#include <girepository.h>
#include <glib.h>
#include <js/TypeDecls.h>
#include "gi/foreign.h"
#include "gjs/context-private.h"
#include "gjs/jsapi-util.h"
static struct {
const char* gi_namespace;
bool loaded;
} foreign_modules[] = {
// clang-format off
{"cairo", false},
{nullptr}
// clang-format on
};
static GHashTable* foreign_structs_table = NULL;
[[nodiscard]] static GHashTable* get_foreign_structs() {
// 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;
}
[[nodiscard]] static bool gjs_foreign_load_foreign_module(
JSContext* context, const char* gi_namespace) {
int i;
for (i = 0; foreign_modules[i].gi_namespace; ++i) {
char *script;
if (strcmp(gi_namespace, foreign_modules[i].gi_namespace) != 0)
continue;
if (foreign_modules[i].loaded)
return 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;", gi_namespace);
JS::RootedValue retval(context);
GjsContextPrivate* gjs = GjsContextPrivate::from_cx(context);
if (!gjs->eval_with_scope(nullptr, script, strlen(script), "<internal>",
&retval)) {
g_critical("ERROR importing foreign module %s\n", gi_namespace);
g_free(script);
return false;
}
g_free(script);
foreign_modules[i].loaded = true;
return true;
}
return false;
}
void gjs_struct_foreign_register(const char* gi_namespace,
const char* type_name, GjsForeignInfo* info) {
char *canonical_name;
g_return_if_fail(info);
g_return_if_fail(info->to_func);
g_return_if_fail(info->from_func);
canonical_name = g_strdup_printf("%s.%s", gi_namespace, type_name);
g_hash_table_insert(get_foreign_structs(), canonical_name, info);
}
[[nodiscard]] 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;
}
bool gjs_struct_foreign_convert_to_g_argument(
JSContext* context, JS::Value value, GIBaseInfo* interface_info,
const char* arg_name, GjsArgumentType argument_type, GITransfer transfer,
GjsArgumentFlags flags, GArgument* arg) {
GjsForeignInfo *foreign;
foreign = gjs_struct_foreign_lookup(context, interface_info);
if (!foreign)
return false;
if (!foreign->to_func(context, value, arg_name, argument_type, transfer,
flags, arg))
return false;
return true;
}
bool
gjs_struct_foreign_convert_from_g_argument(JSContext *context,
JS::MutableHandleValue value_p,
GIBaseInfo *interface_info,
GIArgument *arg)
{
GjsForeignInfo *foreign;
foreign = gjs_struct_foreign_lookup(context, interface_info);
if (!foreign)
return false;
if (!foreign->from_func(context, value_p, arg))
return false;
return true;
}
bool
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 false;
if (!foreign->release_func)
return true;
if (!foreign->release_func(context, transfer, arg))
return false;
return true;
}
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