1*4bdff4beSrobert //===----------------------------------------------------------------------===// 2*4bdff4beSrobert // 3*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information. 5*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*4bdff4beSrobert // 7*4bdff4beSrobert //===----------------------------------------------------------------------===// 8*4bdff4beSrobert 9*4bdff4beSrobert #ifndef _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 10*4bdff4beSrobert #define _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 11*4bdff4beSrobert 12*4bdff4beSrobert #include <__concepts/convertible_to.h> 13*4bdff4beSrobert #include <__concepts/destructible.h> 14*4bdff4beSrobert #include <__config> 15*4bdff4beSrobert #include <__type_traits/is_constructible.h> 16*4bdff4beSrobert 17*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18*4bdff4beSrobert # pragma GCC system_header 19*4bdff4beSrobert #endif 20*4bdff4beSrobert 21*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 22*4bdff4beSrobert 23*4bdff4beSrobert #if _LIBCPP_STD_VER > 17 24*4bdff4beSrobert 25*4bdff4beSrobert // [concept.constructible] 26*4bdff4beSrobert template<class _Tp, class... _Args> 27*4bdff4beSrobert concept constructible_from = 28*4bdff4beSrobert destructible<_Tp> && is_constructible_v<_Tp, _Args...>; 29*4bdff4beSrobert 30*4bdff4beSrobert // [concept.default.init] 31*4bdff4beSrobert 32*4bdff4beSrobert template<class _Tp> 33*4bdff4beSrobert concept __default_initializable = requires { ::new _Tp; }; 34*4bdff4beSrobert 35*4bdff4beSrobert template<class _Tp> 36*4bdff4beSrobert concept default_initializable = constructible_from<_Tp> && 37*4bdff4beSrobert requires { _Tp{}; } && __default_initializable<_Tp>; 38*4bdff4beSrobert 39*4bdff4beSrobert // [concept.moveconstructible] 40*4bdff4beSrobert template<class _Tp> 41*4bdff4beSrobert concept move_constructible = 42*4bdff4beSrobert constructible_from<_Tp, _Tp> && convertible_to<_Tp, _Tp>; 43*4bdff4beSrobert 44*4bdff4beSrobert // [concept.copyconstructible] 45*4bdff4beSrobert template<class _Tp> 46*4bdff4beSrobert concept copy_constructible = 47*4bdff4beSrobert move_constructible<_Tp> && 48*4bdff4beSrobert constructible_from<_Tp, _Tp&> && convertible_to<_Tp&, _Tp> && 49*4bdff4beSrobert constructible_from<_Tp, const _Tp&> && convertible_to<const _Tp&, _Tp> && 50*4bdff4beSrobert constructible_from<_Tp, const _Tp> && convertible_to<const _Tp, _Tp>; 51*4bdff4beSrobert 52*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 17 53*4bdff4beSrobert 54*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 55*4bdff4beSrobert 56*4bdff4beSrobert #endif // _LIBCPP___CONCEPTS_CONSTRUCTIBLE_H 57