168264b64SNikolas Klauser //===----------------------------------------------------------------------===// 268264b64SNikolas Klauser // 368264b64SNikolas Klauser // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 468264b64SNikolas Klauser // See https://llvm.org/LICENSE.txt for license information. 568264b64SNikolas Klauser // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 668264b64SNikolas Klauser // 768264b64SNikolas Klauser //===----------------------------------------------------------------------===// 868264b64SNikolas Klauser 968264b64SNikolas Klauser #ifndef _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H 1068264b64SNikolas Klauser #define _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H 1168264b64SNikolas Klauser 1268264b64SNikolas Klauser #include <__algorithm/in_found_result.h> 1368264b64SNikolas Klauser #include <__algorithm/iterator_operations.h> 1468264b64SNikolas Klauser #include <__algorithm/make_projected.h> 1568264b64SNikolas Klauser #include <__algorithm/next_permutation.h> 1668264b64SNikolas Klauser #include <__config> 1768264b64SNikolas Klauser #include <__functional/identity.h> 1868264b64SNikolas Klauser #include <__functional/ranges_operations.h> 1968264b64SNikolas Klauser #include <__iterator/concepts.h> 2068264b64SNikolas Klauser #include <__iterator/sortable.h> 2168264b64SNikolas Klauser #include <__ranges/access.h> 2268264b64SNikolas Klauser #include <__ranges/concepts.h> 2368264b64SNikolas Klauser #include <__ranges/dangling.h> 2468264b64SNikolas Klauser #include <__utility/move.h> 25d5e26775SNikolas Klauser #include <__utility/pair.h> 2668264b64SNikolas Klauser 2768264b64SNikolas Klauser #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 2868264b64SNikolas Klauser # pragma GCC system_header 2968264b64SNikolas Klauser #endif 3068264b64SNikolas Klauser 317b462251SLouis Dionne _LIBCPP_PUSH_MACROS 327b462251SLouis Dionne #include <__undef_macros> 337b462251SLouis Dionne 344f15267dSNikolas Klauser #if _LIBCPP_STD_VER >= 20 3568264b64SNikolas Klauser 3668264b64SNikolas Klauser _LIBCPP_BEGIN_NAMESPACE_STD 3768264b64SNikolas Klauser 3868264b64SNikolas Klauser namespace ranges { 3968264b64SNikolas Klauser 4068264b64SNikolas Klauser template <class _InIter> 4168264b64SNikolas Klauser using next_permutation_result = in_found_result<_InIter>; 4268264b64SNikolas Klauser 43*d10dc5a0SChristopher Di Bella struct __next_permutation { 4468264b64SNikolas Klauser template <bidirectional_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity> 4568264b64SNikolas Klauser requires sortable<_Iter, _Comp, _Proj> 4668264b64SNikolas Klauser _LIBCPP_HIDE_FROM_ABI constexpr next_permutation_result<_Iter> 4768264b64SNikolas Klauser operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { 4868264b64SNikolas Klauser auto __result = std::__next_permutation<_RangeAlgPolicy>( 4968264b64SNikolas Klauser std::move(__first), std::move(__last), std::__make_projected(__comp, __proj)); 5068264b64SNikolas Klauser return {std::move(__result.first), std::move(__result.second)}; 5168264b64SNikolas Klauser } 5268264b64SNikolas Klauser 5368264b64SNikolas Klauser template <bidirectional_range _Range, class _Comp = ranges::less, class _Proj = identity> 5468264b64SNikolas Klauser requires sortable<iterator_t<_Range>, _Comp, _Proj> 5568264b64SNikolas Klauser _LIBCPP_HIDE_FROM_ABI constexpr next_permutation_result<borrowed_iterator_t<_Range>> 5668264b64SNikolas Klauser operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const { 5768264b64SNikolas Klauser auto __result = std::__next_permutation<_RangeAlgPolicy>( 5868264b64SNikolas Klauser ranges::begin(__range), ranges::end(__range), std::__make_projected(__comp, __proj)); 5968264b64SNikolas Klauser return {std::move(__result.first), std::move(__result.second)}; 6068264b64SNikolas Klauser } 6168264b64SNikolas Klauser }; 6268264b64SNikolas Klauser 6368264b64SNikolas Klauser inline namespace __cpo { 64*d10dc5a0SChristopher Di Bella constexpr inline auto next_permutation = __next_permutation{}; 6568264b64SNikolas Klauser } // namespace __cpo 6668264b64SNikolas Klauser } // namespace ranges 6768264b64SNikolas Klauser 6868264b64SNikolas Klauser _LIBCPP_END_NAMESPACE_STD 6968264b64SNikolas Klauser 704f15267dSNikolas Klauser #endif // _LIBCPP_STD_VER >= 20 7168264b64SNikolas Klauser 727b462251SLouis Dionne _LIBCPP_POP_MACROS 737b462251SLouis Dionne 7468264b64SNikolas Klauser #endif // _LIBCPP___ALGORITHM_RANGES_NEXT_PERMUTATION_H 75