chromium/third_party/libc++/src/include/__iterator/iter_swap.h

// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// 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___ITERATOR_ITER_SWAP_H
#define _LIBCPP___ITERATOR_ITER_SWAP_H

#include <__concepts/class_or_enum.h>
#include <__concepts/swappable.h>
#include <__config>
#include <__iterator/concepts.h>
#include <__iterator/iter_move.h>
#include <__iterator/iterator_traits.h>
#include <__iterator/readable_traits.h>
#include <__type_traits/remove_cvref.h>
#include <__utility/declval.h>
#include <__utility/forward.h>
#include <__utility/move.h>

#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

// [iter.cust.swap]

namespace ranges {
namespace __iter_swap {
template <class _I1, class _I2>
void iter_swap(_I1, _I2) = delete;

__unqualified_iter_swap;

__readable_swappable;

struct __fn { … };
} // namespace __iter_swap

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

indirectly_swappable;

#endif // _LIBCPP_STD_VER >= 20

_LIBCPP_END_NAMESPACE_STD

_LIBCPP_POP_MACROS

#endif // _LIBCPP___ITERATOR_ITER_SWAP_H