181ad6265SDimitry Andric //===----------------------------------------------------------------------===// 281ad6265SDimitry Andric // 381ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 481ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 581ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 681ad6265SDimitry Andric // 781ad6265SDimitry Andric //===----------------------------------------------------------------------===// 881ad6265SDimitry Andric 981ad6265SDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H 1081ad6265SDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H 1181ad6265SDimitry Andric 1281ad6265SDimitry Andric #include <__algorithm/copy_backward.h> 1381ad6265SDimitry Andric #include <__algorithm/in_out_result.h> 14972a253aSDimitry Andric #include <__algorithm/iterator_operations.h> 1581ad6265SDimitry Andric #include <__config> 1681ad6265SDimitry Andric #include <__iterator/concepts.h> 1781ad6265SDimitry Andric #include <__ranges/access.h> 1881ad6265SDimitry Andric #include <__ranges/concepts.h> 1981ad6265SDimitry Andric #include <__ranges/dangling.h> 2081ad6265SDimitry Andric #include <__utility/move.h> 2181ad6265SDimitry Andric 2281ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 2381ad6265SDimitry Andric # pragma GCC system_header 2481ad6265SDimitry Andric #endif 2581ad6265SDimitry Andric 26*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 27*b3edf446SDimitry Andric #include <__undef_macros> 28*b3edf446SDimitry Andric 2906c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 3081ad6265SDimitry Andric 3181ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 3281ad6265SDimitry Andric 3381ad6265SDimitry Andric namespace ranges { 3481ad6265SDimitry Andric 3581ad6265SDimitry Andric template <class _Ip, class _Op> 3681ad6265SDimitry Andric using copy_backward_result = in_out_result<_Ip, _Op>; 3781ad6265SDimitry Andric 3881ad6265SDimitry Andric namespace __copy_backward { 3981ad6265SDimitry Andric struct __fn { 4081ad6265SDimitry Andric template <bidirectional_iterator _InIter1, sentinel_for<_InIter1> _Sent1, bidirectional_iterator _InIter2> 4181ad6265SDimitry Andric requires indirectly_copyable<_InIter1, _InIter2> 4206c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result<_InIter1, _InIter2> operator__fn4306c3fb27SDimitry Andric operator()(_InIter1 __first, _Sent1 __last, _InIter2 __result) const { 44972a253aSDimitry Andric auto __ret = std::__copy_backward<_RangeAlgPolicy>(std::move(__first), std::move(__last), std::move(__result)); 4581ad6265SDimitry Andric return {std::move(__ret.first), std::move(__ret.second)}; 4681ad6265SDimitry Andric } 4781ad6265SDimitry Andric 4881ad6265SDimitry Andric template <bidirectional_range _Range, bidirectional_iterator _Iter> 4981ad6265SDimitry Andric requires indirectly_copyable<iterator_t<_Range>, _Iter> 5006c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr copy_backward_result<borrowed_iterator_t<_Range>, _Iter> operator__fn5106c3fb27SDimitry Andric operator()(_Range&& __r, _Iter __result) const { 52972a253aSDimitry Andric auto __ret = std::__copy_backward<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), std::move(__result)); 5381ad6265SDimitry Andric return {std::move(__ret.first), std::move(__ret.second)}; 5481ad6265SDimitry Andric } 5581ad6265SDimitry Andric }; 5681ad6265SDimitry Andric } // namespace __copy_backward 5781ad6265SDimitry Andric 5881ad6265SDimitry Andric inline namespace __cpo { 5981ad6265SDimitry Andric inline constexpr auto copy_backward = __copy_backward::__fn{}; 6081ad6265SDimitry Andric } // namespace __cpo 6181ad6265SDimitry Andric } // namespace ranges 6281ad6265SDimitry Andric 6381ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 6481ad6265SDimitry Andric 6506c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 6681ad6265SDimitry Andric 67*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 68*b3edf446SDimitry Andric 6981ad6265SDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_COPY_BACKWARD_H 70