movable.h 1011 B

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  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. #ifndef _LIBCPP___CONCEPTS_MOVABLE_H
  9. #define _LIBCPP___CONCEPTS_MOVABLE_H
  10. #include <__concepts/assignable.h>
  11. #include <__concepts/constructible.h>
  12. #include <__concepts/swappable.h>
  13. #include <__config>
  14. #include <__type_traits/is_object.h>
  15. #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  16. # pragma GCC system_header
  17. #endif
  18. _LIBCPP_BEGIN_NAMESPACE_STD
  19. #if _LIBCPP_STD_VER > 17
  20. // [concepts.object]
  21. template<class _Tp>
  22. concept movable =
  23. is_object_v<_Tp> &&
  24. move_constructible<_Tp> &&
  25. assignable_from<_Tp&, _Tp> &&
  26. swappable<_Tp>;
  27. #endif // _LIBCPP_STD_VER > 17
  28. _LIBCPP_END_NAMESPACE_STD
  29. #endif // _LIBCPP___CONCEPTS_MOVABLE_H