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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H10#define _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H11 12#include <__algorithm/copy_backward.h>13#include <__algorithm/in_out_result.h>14#include <__algorithm/iterator_operations.h>15#include <__config>16#include <__iterator/concepts.h>17#include <__ranges/access.h>18#include <__ranges/concepts.h>19#include <__ranges/dangling.h>20#include <__utility/move.h>21 22#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)23# pragma GCC system_header24#endif25 26_LIBCPP_PUSH_MACROS27#include <__undef_macros>28 29#if _LIBCPP_STD_VER >= 2030 31_LIBCPP_BEGIN_NAMESPACE_STD32 33namespace ranges {34 35template <class _Ip, class _Op>36using copy_backward_result = in_out_result<_Ip, _Op>;37 38struct __copy_backward {39 template <bidirectional_iterator _InIter1, sentinel_for<_InIter1> _Sent1, bidirectional_iterator _InIter2>40 requires indirectly_copyable<_InIter1, _InIter2>41 _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result<_InIter1, _InIter2>42 operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const {43 auto __ret = std::__copy_backward<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result));44 return {std::move(__ret.first), std::move(__ret.second)};45 }46 47 template <bidirectional_range _Range, bidirectional_iterator _Iter>48 requires indirectly_copyable<iterator_t<_Range>, _Iter>49 _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result<borrowed_iterator_t<_Range>, _Iter>50 operator()(_Range&& __r, _Iter __result) const {51 auto __ret = std::__copy_backward<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result));52 return {std::move(__ret.first), std::move(__ret.second)};53 }54};55 56inline namespace __cpo {57inline constexpr auto copy_backward = __copy_backward{};58} // namespace __cpo59} // namespace ranges60 61_LIBCPP_END_NAMESPACE_STD62 63#endif // _LIBCPP_STD_VER >= 2064 65_LIBCPP_POP_MACROS66 67#endif // _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H68