1//===----------------------------------------------------------------------===//
 2//
 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 4// See https://llvm.org/LICENSE.txt for license information.
 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 6//
 7//===----------------------------------------------------------------------===//
 8
 9#ifndef _LIBCPP___CONCEPTS_COPYABLE_H
10#define _LIBCPP___CONCEPTS_COPYABLE_H
11
12#include <__concepts/assignable.h>
13#include <__concepts/constructible.h>
14#include <__concepts/movable.h>
15#include <__config>
16
17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18#  pragma GCC system_header
19#endif
20
21_LIBCPP_BEGIN_NAMESPACE_STD
22
23#if _LIBCPP_STD_VER >= 20
24
25// [concepts.object]
26
27// clang-format off
28template <class _Tp>
29concept copyable =
30    copy_constructible<_Tp> &&
31    movable<_Tp> &&
32    assignable_from<_Tp&, _Tp&> &&
33    assignable_from<_Tp&, const _Tp&> &&
34    assignable_from<_Tp&, const _Tp>;
35// clang-format on
36
37#endif // _LIBCPP_STD_VER >= 20
38
39_LIBCPP_END_NAMESPACE_STD
40
41#endif // _LIBCPP___CONCEPTS_COPYABLE_H