godot/platform/javascript/api/api.cpp

/*************************************************************************/
/*  api.cpp                                                              */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
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#include "api.h"
#include "core/engine.h"
#include "javascript_singleton.h"
#include "javascript_tools_editor_plugin.h"

static JavaScript *javascript_eval;

void register_javascript_api() {
	JavaScriptToolsEditorPlugin::initialize();
	ClassDB::register_virtual_class<JavaScriptObject>();
	ClassDB::register_virtual_class<JavaScript>();
	javascript_eval = memnew(JavaScript);
	Engine::get_singleton()->add_singleton(Engine::Singleton("JavaScript", javascript_eval));
}

void unregister_javascript_api() {
	memdelete(javascript_eval);
}

JavaScript *JavaScript::singleton = nullptr;

JavaScript *JavaScript::get_singleton() {
	return singleton;
}

JavaScript::JavaScript() {
	ERR_FAIL_COND_MSG(singleton != nullptr, "JavaScript singleton already exist.");
	singleton = this;
}

JavaScript::~JavaScript() {}

void JavaScript::_bind_methods() {
	ClassDB::bind_method(D_METHOD("eval", "code", "use_global_execution_context"), &JavaScript::eval, DEFVAL(false));
	ClassDB::bind_method(D_METHOD("get_interface", "interface"), &JavaScript::get_interface);
	ClassDB::bind_method(D_METHOD("create_callback", "object", "method"), &JavaScript::create_callback);
	{
		MethodInfo mi;
		mi.name = "create_object";
		mi.arguments.push_back(PropertyInfo(Variant::STRING, "object"));
		ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "create_object", &JavaScript::_create_object_bind, mi);
	}
}

#if !defined(JAVASCRIPT_ENABLED) || !defined(JAVASCRIPT_EVAL_ENABLED)
Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
	return Variant();
}

Ref<JavaScriptObject> JavaScript::get_interface(const String &p_interface) {
	return Ref<JavaScriptObject>();
}

Ref<JavaScriptObject> JavaScript::create_callback(Object *p_ref, const StringName &p_method) {
	return Ref<JavaScriptObject>();
}

Variant JavaScript::_create_object_bind(const Variant **p_args, int p_argcount, Variant::CallError &r_error) {
	if (p_argcount < 1) {
		r_error.error = Variant::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
		r_error.argument = 0;
		return Ref<JavaScriptObject>();
	}
	if (p_args[0]->get_type() != Variant::STRING) {
		r_error.error = Variant::CallError::CALL_ERROR_INVALID_ARGUMENT;
		r_error.argument = 0;
		r_error.expected = Variant::STRING;
		return Ref<JavaScriptObject>();
	}
	return Ref<JavaScriptObject>();
}
#endif