1e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 2e78f53d1SNikolas Klauser // 3e78f53d1SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4e78f53d1SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 5e78f53d1SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6e78f53d1SNikolas Klauser // 7e78f53d1SNikolas Klauser //===----------------------------------------------------------------------===// 8e78f53d1SNikolas Klauser 9*ce777190SNikolas Klauser #ifndef _LIBCPP___CXX03___CONCEPTS_CONSTRUCTIBLE_H 10*ce777190SNikolas Klauser #define _LIBCPP___CXX03___CONCEPTS_CONSTRUCTIBLE_H 11e78f53d1SNikolas Klauser 1273fbae83SNikolas Klauser #include <__cxx03/__concepts/convertible_to.h> 1373fbae83SNikolas Klauser #include <__cxx03/__concepts/destructible.h> 1473fbae83SNikolas Klauser #include <__cxx03/__config> 1573fbae83SNikolas Klauser #include <__cxx03/__type_traits/is_constructible.h> 16e78f53d1SNikolas Klauser 17e78f53d1SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18e78f53d1SNikolas Klauser # pragma GCC system_header 19e78f53d1SNikolas Klauser #endif 20e78f53d1SNikolas Klauser 21e78f53d1SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 22e78f53d1SNikolas Klauser 23e78f53d1SNikolas Klauser #if _LIBCPP_STD_VER >= 20 24e78f53d1SNikolas Klauser 25e78f53d1SNikolas Klauser // [concept.constructible] 26e78f53d1SNikolas Klauser template <class _Tp, class... _Args> 27e78f53d1SNikolas Klauser concept constructible_from = destructible<_Tp> && is_constructible_v<_Tp, _Args...>; 28e78f53d1SNikolas Klauser 29e78f53d1SNikolas Klauser // [concept.default.init] 30e78f53d1SNikolas Klauser 31e78f53d1SNikolas Klauser template <class _Tp> 32e78f53d1SNikolas Klauser concept __default_initializable = requires { ::new _Tp; }; 33e78f53d1SNikolas Klauser 34e78f53d1SNikolas Klauser template <class _Tp> 35e78f53d1SNikolas Klauser concept default_initializable = constructible_from<_Tp> && requires { _Tp{}; } && __default_initializable<_Tp>; 36e78f53d1SNikolas Klauser 37e78f53d1SNikolas Klauser // [concept.moveconstructible] 38e78f53d1SNikolas Klauser template <class _Tp> 39e78f53d1SNikolas Klauser concept move_constructible = constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>; 40e78f53d1SNikolas Klauser 41e78f53d1SNikolas Klauser // [concept.copyconstructible] 42e78f53d1SNikolas Klauser // clang-format off 43e78f53d1SNikolas Klauser template <class _Tp> 44e78f53d1SNikolas Klauser concept copy_constructible = 45e78f53d1SNikolas Klauser move_constructible<_Tp> && 46e78f53d1SNikolas Klauser constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp> && 47e78f53d1SNikolas Klauser constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && 48e78f53d1SNikolas Klauser constructible_from<_Tp, const _Tp> && convertible_to<const _Tp, _Tp>; 49e78f53d1SNikolas Klauser // clang-format on 50e78f53d1SNikolas Klauser 51e78f53d1SNikolas Klauser #endif // _LIBCPP_STD_VER >= 20 52e78f53d1SNikolas Klauser 53e78f53d1SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 54e78f53d1SNikolas Klauser 55*ce777190SNikolas Klauser #endif // _LIBCPP___CXX03___CONCEPTS_CONSTRUCTIBLE_H 56