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/*************************************************************************/
/*  gdscript_utility_functions.h                                         */
/*************************************************************************/
/*                       This file is part of:                           */
/*                           GODOT ENGINE                                */
/*                      https://godotengine.org                          */
/*************************************************************************/
/* Copyright (c) 2007-2021 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2021 Godot Engine contributors (cf. AUTHORS.md).   */
/*                                                                       */
/* 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.                */
/*************************************************************************/

#ifndef GDSCRIPT_UTILITY_FUNCTIONS_H
#define GDSCRIPT_UTILITY_FUNCTIONS_H

#include "core/string/string_name.h"
#include "core/variant/variant.h"

class GDScriptUtilityFunctions {
public:
	typedef void (*FunctionPtr)(Variant *r_ret, const Variant **p_args, int p_arg_count, Callable::CallError &r_error);

	static FunctionPtr get_function(const StringName &p_function);
	static bool has_function_return_value(const StringName &p_function);
	static Variant::Type get_function_return_type(const StringName &p_function);
	static StringName get_function_return_class(const StringName &p_function);
	static Variant::Type get_function_argument_type(const StringName &p_function, int p_arg);
	static int get_function_argument_count(const StringName &p_function, int p_arg);
	static bool is_function_vararg(const StringName &p_function);
	static bool is_function_constant(const StringName &p_function);

	static bool function_exists(const StringName &p_function);
	static void get_function_list(List<StringName> *r_functions);
	static MethodInfo get_function_info(const StringName &p_function);

	static void register_functions();
	static void unregister_functions();
};

#endif // GDSCRIPT_UTILITY_FUNCTIONS_H