1753f127fSDimitry Andric //===----------------------------------------------------------------------===// 2753f127fSDimitry Andric // 3753f127fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4753f127fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5753f127fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6753f127fSDimitry Andric // 7753f127fSDimitry Andric //===----------------------------------------------------------------------===// 8753f127fSDimitry Andric 9753f127fSDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H 11753f127fSDimitry Andric 12753f127fSDimitry Andric #include <__algorithm/in_out_result.h> 13753f127fSDimitry Andric #include <__algorithm/ranges_copy.h> 14753f127fSDimitry Andric #include <__config> 15753f127fSDimitry Andric #include <__iterator/concepts.h> 16753f127fSDimitry Andric #include <__iterator/next.h> 17753f127fSDimitry Andric #include <__iterator/reverse_iterator.h> 18753f127fSDimitry Andric #include <__ranges/access.h> 19753f127fSDimitry Andric #include <__ranges/concepts.h> 20753f127fSDimitry Andric #include <__ranges/dangling.h> 21753f127fSDimitry Andric #include <__ranges/subrange.h> 22753f127fSDimitry Andric #include <__utility/move.h> 23753f127fSDimitry Andric 24753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 25753f127fSDimitry Andric # pragma GCC system_header 26753f127fSDimitry Andric #endif 27753f127fSDimitry Andric 28*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 29*b3edf446SDimitry Andric #include <__undef_macros> 30*b3edf446SDimitry Andric 3106c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 32753f127fSDimitry Andric 33753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 34753f127fSDimitry Andric 35753f127fSDimitry Andric namespace ranges { 36753f127fSDimitry Andric 37753f127fSDimitry Andric template <class _InIter, class _OutIter> 38753f127fSDimitry Andric using reverse_copy_result = in_out_result<_InIter, _OutIter>; 39753f127fSDimitry Andric 40753f127fSDimitry Andric namespace __reverse_copy { 41753f127fSDimitry Andric struct __fn { 42753f127fSDimitry Andric template <bidirectional_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter> 43753f127fSDimitry Andric requires indirectly_copyable<_InIter, _OutIter> 4406c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result<_InIter, _OutIter> operator__fn4506c3fb27SDimitry Andric operator()(_InIter __first, _Sent __last, _OutIter __result) const { 46753f127fSDimitry Andric return (*this)(subrange(std::move(__first), std::move(__last)), std::move(__result)); 47753f127fSDimitry Andric } 48753f127fSDimitry Andric 49753f127fSDimitry Andric template <bidirectional_range _Range, weakly_incrementable _OutIter> 50753f127fSDimitry Andric requires indirectly_copyable<iterator_t<_Range>, _OutIter> 5106c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr reverse_copy_result<borrowed_iterator_t<_Range>, _OutIter> operator__fn5206c3fb27SDimitry Andric operator()(_Range&& __range, _OutIter __result) const { 53753f127fSDimitry Andric auto __ret = ranges::copy(std::__reverse_range(__range), std::move(__result)); 54753f127fSDimitry Andric return {ranges::next(ranges::begin(__range), ranges::end(__range)), std::move(__ret.out)}; 55753f127fSDimitry Andric } 56753f127fSDimitry Andric }; 57753f127fSDimitry Andric } // namespace __reverse_copy 58753f127fSDimitry Andric 59753f127fSDimitry Andric inline namespace __cpo { 60753f127fSDimitry Andric inline constexpr auto reverse_copy = __reverse_copy::__fn{}; 61753f127fSDimitry Andric } // namespace __cpo 62753f127fSDimitry Andric } // namespace ranges 63753f127fSDimitry Andric 64753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 65753f127fSDimitry Andric 6606c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 67753f127fSDimitry Andric 68*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 69*b3edf446SDimitry Andric 70753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_REVERSE_COPY_H 71