// =====================================================================================================================
//  fennec, a free and open source game engine
//  Copyright © 2025  Medusa Slockbower
//
//  This program is free software: you can redistribute it and/or modify
//  it under the terms of the GNU General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  This program is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU General Public License for more details.
//
//  You should have received a copy of the GNU General Public License
//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
// =====================================================================================================================

#ifndef FENNEC_LANG_TYPEUUID_H
#define FENNEC_LANG_TYPEUUID_H

#include <fennec/lang/assert.h>
#include <fennec/lang/types.h>
#include <fennec/lang/type_traits.h>

#include <fennec/lang/detail/_typeuuid.h>

namespace fennec
{

constexpr uint64_t nullid = 0;

template<typename TypeT, typename RootT = void>
FENNEC_NO_INLINE uint64_t typeuuid() {
	assertf(not is_constant_evaluated(), "Type UUIDs Cannot Be Obtained at Compile Time");

	static bool init = false;
	static uint64_t id = nullid;

	if (init) return id;
	init = true;
	return id = detail::_typeuuid<RootT>();
}

}

#endif // FENNEC_LANG_TYPEUUID_H
