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 > 17
24 
25 // [concepts.object]
26 
27 template<class _Tp>
28 concept copyable =
29   copy_constructible<_Tp> &&
30   movable<_Tp> &&
31   assignable_from<_Tp&, _Tp&> &&
32   assignable_from<_Tp&, const _Tp&> &&
33   assignable_from<_Tp&, const _Tp>;
34 
35 #endif // _LIBCPP_STD_VER > 17
36 
37 _LIBCPP_END_NAMESPACE_STD
38 
39 #endif // _LIBCPP___CONCEPTS_COPYABLE_H
40