158915667SArthur O'Dwyer //===----------------------------------------------------------------------===// 258915667SArthur O'Dwyer // 358915667SArthur O'Dwyer // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 458915667SArthur O'Dwyer // See https://llvm.org/LICENSE.txt for license information. 558915667SArthur O'Dwyer // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 658915667SArthur O'Dwyer // 758915667SArthur O'Dwyer //===----------------------------------------------------------------------===// 858915667SArthur O'Dwyer 958915667SArthur O'Dwyer #ifndef _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 1058915667SArthur O'Dwyer #define _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 1158915667SArthur O'Dwyer 1258915667SArthur O'Dwyer #include <__concepts/convertible_to.h> 1358915667SArthur O'Dwyer #include <__concepts/destructible.h> 1458915667SArthur O'Dwyer #include <__config> 1566ba7c32SNikolas Klauser #include <__type_traits/is_constructible.h> 1658915667SArthur O'Dwyer 1758915667SArthur O'Dwyer #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 1858915667SArthur O'Dwyer # pragma GCC system_header 1958915667SArthur O'Dwyer #endif 2058915667SArthur O'Dwyer 2158915667SArthur O'Dwyer _LIBCPP_BEGIN_NAMESPACE_STD 2258915667SArthur O'Dwyer 234f15267dSNikolas Klauser #if _LIBCPP_STD_VER >= 20 2458915667SArthur O'Dwyer 2558915667SArthur O'Dwyer // [concept.constructible] 2658915667SArthur O'Dwyer template <class _Tp, class... _Args> 27*5aa03b64SLouis Dionne concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>; 2858915667SArthur O'Dwyer 2958915667SArthur O'Dwyer // [concept.default.init] 3058915667SArthur O'Dwyer 3158915667SArthur O'Dwyer template <class _Tp> 3258915667SArthur O'Dwyer concept __default_initializable = requires { ::new _Tp; }; 3358915667SArthur O'Dwyer 3458915667SArthur O'Dwyer template <class _Tp> 35*5aa03b64SLouis Dionne concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>; 3658915667SArthur O'Dwyer 3758915667SArthur O'Dwyer // [concept.moveconstructible] 3858915667SArthur O'Dwyer template <class _Tp> 39*5aa03b64SLouis Dionne concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>; 4058915667SArthur O'Dwyer 4158915667SArthur O'Dwyer // [concept.copyconstructible] 42*5aa03b64SLouis Dionne // clang-format off 4358915667SArthur O'Dwyer template <class _Tp> 4458915667SArthur O'Dwyer concept copy_constructible = 4558915667SArthur O'Dwyer move_constructible<_Tp> && 4658915667SArthur O'Dwyer constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp> && 4758915667SArthur O'Dwyer constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && 4858915667SArthur O'Dwyer constructible_from<_Tp, const _Tp> && convertible_to<const _Tp, _Tp>; 49*5aa03b64SLouis Dionne // clang-format on 5058915667SArthur O'Dwyer 514f15267dSNikolas Klauser #endif // _LIBCPP_STD_VER >= 20 5258915667SArthur O'Dwyer 5358915667SArthur O'Dwyer _LIBCPP_END_NAMESPACE_STD 5458915667SArthur O'Dwyer 5558915667SArthur O'Dwyer #endif // _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 56