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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_ROTATE_COPY_H10#define _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H11 12#include <__algorithm/in_out_result.h>13#include <__algorithm/ranges_copy.h>14#include <__config>15#include <__iterator/concepts.h>16#include <__ranges/access.h>17#include <__ranges/concepts.h>18#include <__ranges/dangling.h>19#include <__utility/move.h>20 21#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)22# pragma GCC system_header23#endif24 25_LIBCPP_PUSH_MACROS26#include <__undef_macros>27 28#if _LIBCPP_STD_VER >= 2029 30_LIBCPP_BEGIN_NAMESPACE_STD31 32namespace ranges {33 34template <class _InIter, class _OutIter>35using rotate_copy_result = in_out_result<_InIter, _OutIter>;36 37struct __rotate_copy {38 template <forward_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>39 requires indirectly_copyable<_InIter, _OutIter>40 _LIBCPP_HIDE_FROM_ABI constexpr rotate_copy_result<_InIter, _OutIter>41 operator()(_InIter __first, _InIter __middle, _Sent __last, _OutIter __result) const {42 auto __res1 = ranges::copy(__middle, __last, std::move(__result));43 auto __res2 = ranges::copy(__first, __middle, std::move(__res1.out));44 return {std::move(__res1.in), std::move(__res2.out)};45 }46 47 template <forward_range _Range, weakly_incrementable _OutIter>48 requires indirectly_copyable<iterator_t<_Range>, _OutIter>49 _LIBCPP_HIDE_FROM_ABI constexpr rotate_copy_result<borrowed_iterator_t<_Range>, _OutIter>50 operator()(_Range&& __range, iterator_t<_Range> __middle, _OutIter __result) const {51 return (*this)(ranges::begin(__range), std::move(__middle), ranges::end(__range), std::move(__result));52 }53};54 55inline namespace __cpo {56inline constexpr auto rotate_copy = __rotate_copy{};57} // namespace __cpo58} // namespace ranges59 60_LIBCPP_END_NAMESPACE_STD61 62#endif // _LIBCPP_STD_VER >= 2063 64_LIBCPP_POP_MACROS65 66#endif // _LIBCPP___ALGORITHM_RANGES_ROTATE_COPY_H67