tuple_size.hpp

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// SPDX-License-Identifier: BSL-1.0
// SPDX-FileCopyrightText: Copyright (C) 2019 Tobias Hienzsch
 
#ifndef TETL_TUPLE_TUPLE_SIZE_HPP
#define TETL_TUPLE_TUPLE_SIZE_HPP
 
#include <etl/_cstddef/size_t.hpp>
#include <etl/_type_traits/integral_constant.hpp>
 
namespace etl {
 
template <typename... Ts>
struct tuple;
 
template <typename T>
struct tuple_size; /*undefined*/
 
template <typename T>
struct tuple_size<T const> : integral_constant<size_t, tuple_size<T>::value> { };
 
template <typename T>
struct tuple_size<T volatile> : integral_constant<size_t, tuple_size<T>::value> { };
 
template <typename T>
struct tuple_size<T const volatile> : integral_constant<size_t, tuple_size<T>::value> { };
 
template <typename T>
inline constexpr auto tuple_size_v = tuple_size<T>::value;
 
} // namespace etl
 
#endif // TETL_TUPLE_TUPLE_SIZE_HPP