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-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_RANGES_FIND_END_H 10 #define _LIBCPP___ALGORITHM_RANGES_FIND_END_H 11 12 #include <__algorithm/find_end.h> 13 #include <__algorithm/iterator_operations.h> 14 #include <__algorithm/ranges_iterator_concept.h> 15 #include <__config> 16 #include <__functional/identity.h> 17 #include <__functional/ranges_operations.h> 18 #include <__iterator/concepts.h> 19 #include <__iterator/indirectly_comparable.h> 20 #include <__iterator/iterator_traits.h> 21 #include <__ranges/access.h> 22 #include <__ranges/concepts.h> 23 #include <__ranges/subrange.h> 24 #include <__utility/pair.h> 25 26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 27 # pragma GCC system_header 28 #endif 29 30 _LIBCPP_PUSH_MACROS 31 #include <__undef_macros> 32 33 #if _LIBCPP_STD_VER >= 20 34 35 _LIBCPP_BEGIN_NAMESPACE_STD 36 37 namespace ranges { 38 struct __find_end { 39 template <forward_iterator _Iter1, 40 sentinel_for<_Iter1> _Sent1, 41 forward_iterator _Iter2, 42 sentinel_for<_Iter2> _Sent2, 43 class _Pred = ranges::equal_to, 44 class _Proj1 = identity, 45 class _Proj2 = identity> 46 requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> 47 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter1> operator()( 48 _Iter1 __first1, 49 _Sent1 __last1, 50 _Iter2 __first2, 51 _Sent2 __last2, 52 _Pred __pred = {}, 53 _Proj1 __proj1 = {}, 54 _Proj2 __proj2 = {}) const { 55 auto __ret = std::__find_end_impl<_RangeAlgPolicy>( 56 __first1, 57 __last1, 58 __first2, 59 __last2, 60 __pred, 61 __proj1, 62 __proj2, 63 __iterator_concept<_Iter1>(), 64 __iterator_concept<_Iter2>()); 65 return {__ret.first, __ret.second}; 66 } 67 68 template <forward_range _Range1, 69 forward_range _Range2, 70 class _Pred = ranges::equal_to, 71 class _Proj1 = identity, 72 class _Proj2 = identity> 73 requires indirectly_comparable<iterator_t<_Range1>, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> 74 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range1> operator()( 75 _Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { 76 auto __ret = std::__find_end_impl<_RangeAlgPolicy>( 77 ranges::begin(__range1), 78 ranges::end(__range1), 79 ranges::begin(__range2), 80 ranges::end(__range2), 81 __pred, 82 __proj1, 83 __proj2, 84 __iterator_concept<iterator_t<_Range1>>(), 85 __iterator_concept<iterator_t<_Range2>>()); 86 return {__ret.first, __ret.second}; 87 } 88 }; 89 90 inline namespace __cpo { 91 inline constexpr auto find_end = __find_end{}; 92 } // namespace __cpo 93 } // namespace ranges 94 95 _LIBCPP_END_NAMESPACE_STD 96 97 #endif // _LIBCPP_STD_VER >= 20 98 99 _LIBCPP_POP_MACROS 100 101 #endif // _LIBCPP___ALGORITHM_RANGES_FIND_END_H 102