1349cc55cSDimitry Andric //===----------------------------------------------------------------------===// 2349cc55cSDimitry Andric // 3349cc55cSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4349cc55cSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5349cc55cSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6349cc55cSDimitry Andric // 7349cc55cSDimitry Andric //===----------------------------------------------------------------------===// 8349cc55cSDimitry Andric 9349cc55cSDimitry Andric #ifndef _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 10349cc55cSDimitry Andric #define _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 11349cc55cSDimitry Andric 12349cc55cSDimitry Andric #include <__concepts/convertible_to.h> 13349cc55cSDimitry Andric #include <__concepts/destructible.h> 14349cc55cSDimitry Andric #include <__config> 15bdd1243dSDimitry Andric #include <__type_traits/is_constructible.h> 16349cc55cSDimitry Andric 17349cc55cSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18349cc55cSDimitry Andric # pragma GCC system_header 19349cc55cSDimitry Andric #endif 20349cc55cSDimitry Andric 21349cc55cSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 22349cc55cSDimitry Andric 23*06c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 24349cc55cSDimitry Andric 25349cc55cSDimitry Andric // [concept.constructible] 26349cc55cSDimitry Andric template <class _Tp, class... _Args> 27*06c3fb27SDimitry Andric concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>; 28349cc55cSDimitry Andric 29349cc55cSDimitry Andric // [concept.default.init] 30349cc55cSDimitry Andric 31349cc55cSDimitry Andric template <class _Tp> 32349cc55cSDimitry Andric concept __default_initializable = requires { ::new _Tp; }; 33349cc55cSDimitry Andric 34349cc55cSDimitry Andric template <class _Tp> 35*06c3fb27SDimitry Andric concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>; 36349cc55cSDimitry Andric 37349cc55cSDimitry Andric // [concept.moveconstructible] 38349cc55cSDimitry Andric template <class _Tp> 39*06c3fb27SDimitry Andric concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>; 40349cc55cSDimitry Andric 41349cc55cSDimitry Andric // [concept.copyconstructible] 42*06c3fb27SDimitry Andric // clang-format off 43349cc55cSDimitry Andric template <class _Tp> 44349cc55cSDimitry Andric concept copy_constructible = 45349cc55cSDimitry Andric move_constructible<_Tp> && 46349cc55cSDimitry Andric constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp> && 47349cc55cSDimitry Andric constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && 48349cc55cSDimitry Andric constructible_from<_Tp, const _Tp> && convertible_to<const _Tp, _Tp>; 49*06c3fb27SDimitry Andric // clang-format on 50349cc55cSDimitry Andric 51*06c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 52349cc55cSDimitry Andric 53349cc55cSDimitry Andric _LIBCPP_END_NAMESPACE_STD 54349cc55cSDimitry Andric 55349cc55cSDimitry Andric #endif // _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 56