// =====================================================================================================================
//  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_DETAIL_TYPE_SEQUENCES_H
#define FENNEC_LANG_DETAIL_TYPE_SEQUENCES_H

#include <fennec/lang/type_transforms.h>

namespace fennec::detail
{

	template<typename FirstT, typename... RestT> struct _first_element : type_identity<FirstT> {};

	template<size_t n, size_t i, typename...TypesT> struct _nth_element;

	template<size_t n, size_t i> struct _nth_element<n, i> : type_identity<void> {};

	template<size_t n, size_t i, typename HeadT, typename...RestT>
	struct _nth_element<n, i, HeadT, RestT...> : conditional<
		n == i, HeadT,
		typename _nth_element<n, i + 1, RestT...>::type
	> {};
}

#endif // FENNEC_LANG_DETAIL_TYPE_SEQUENCES_H
