include/__concepts/copyable.h

//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP___CONCEPTS_COPYABLE_H
#define _LIBCPP___CONCEPTS_COPYABLE_H

#include <__concepts/assignable.h>
#include <__concepts/constructible.h>
#include <__concepts/movable.h>
#include <__config>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#  pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

#if _LIBCPP_STD_VER >= 20

// [concepts.object]

// clang-format off
template <class _Tp>
concept copyable =
    copy_constructible<_Tp> &&
    movable<_Tp> &&
    assignable_from<_Tp&, _Tp&> &&
    assignable_from<_Tp&, const _Tp&> &&
    assignable_from<_Tp&, const _Tp>;
// clang-format on

#endif // _LIBCPP_STD_VER >= 20

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP___CONCEPTS_COPYABLE_H