chromium/third_party/libc++/src/include/__concepts/swappable.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_SWAPPABLE_H
#define _LIBCPP___CONCEPTS_SWAPPABLE_H

#include <__concepts/assignable.h>
#include <__concepts/class_or_enum.h>
#include <__concepts/common_reference_with.h>
#include <__concepts/constructible.h>
#include <__config>
#include <__type_traits/extent.h>
#include <__type_traits/is_nothrow_assignable.h>
#include <__type_traits/is_nothrow_constructible.h>
#include <__type_traits/remove_cvref.h>
#include <__utility/exchange.h>
#include <__utility/forward.h>
#include <__utility/move.h>
#include <__utility/swap.h>
#include <cstddef>

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

_LIBCPP_PUSH_MACROS
#include <__undef_macros>

_LIBCPP_BEGIN_NAMESPACE_STD

#if _LIBCPP_STD_VER >= 20

// [concept.swappable]

namespace ranges {
namespace __swap {

template <class _Tp>
void swap(_Tp&, _Tp&) = delete;

// clang-format off
__unqualified_swappable_with;
// clang-format on

struct __fn;

// clang-format off
__swappable_arrays;
// clang-format on

__exchangeable;

struct __fn { … };
} // namespace __swap

inline namespace __cpo {
inline constexpr auto swap = …;
} // namespace __cpo
} // namespace ranges

swappable;

swappable_with;

#endif // _LIBCPP_STD_VER >= 20

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#endif // _LIBCPP___CONCEPTS_SWAPPABLE_H