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_SET_INTERSECTION_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_SET_INTERSECTION_H 11753f127fSDimitry Andric 12753f127fSDimitry Andric #include <__algorithm/in_in_out_result.h> 13753f127fSDimitry Andric #include <__algorithm/iterator_operations.h> 14753f127fSDimitry Andric #include <__algorithm/make_projected.h> 15753f127fSDimitry Andric #include <__algorithm/set_intersection.h> 16753f127fSDimitry Andric #include <__config> 17753f127fSDimitry Andric #include <__functional/identity.h> 18753f127fSDimitry Andric #include <__functional/invoke.h> 19753f127fSDimitry Andric #include <__functional/ranges_operations.h> 20753f127fSDimitry Andric #include <__iterator/concepts.h> 21753f127fSDimitry Andric #include <__iterator/mergeable.h> 22753f127fSDimitry Andric #include <__ranges/access.h> 23753f127fSDimitry Andric #include <__ranges/concepts.h> 24753f127fSDimitry Andric #include <__ranges/dangling.h> 25753f127fSDimitry Andric #include <__utility/move.h> 26753f127fSDimitry Andric 27753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 28753f127fSDimitry Andric # pragma GCC system_header 29753f127fSDimitry Andric #endif 30753f127fSDimitry Andric 31*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 32*b3edf446SDimitry Andric #include <__undef_macros> 33*b3edf446SDimitry Andric 3406c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 35753f127fSDimitry Andric 36753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 37753f127fSDimitry Andric 38753f127fSDimitry Andric namespace ranges { 39753f127fSDimitry Andric 40753f127fSDimitry Andric template <class _InIter1, class _InIter2, class _OutIter> 41753f127fSDimitry Andric using set_intersection_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; 42753f127fSDimitry Andric 43753f127fSDimitry Andric namespace __set_intersection { 44753f127fSDimitry Andric 45753f127fSDimitry Andric struct __fn { 4606c3fb27SDimitry Andric template <input_iterator _InIter1, 47753f127fSDimitry Andric sentinel_for<_InIter1> _Sent1, 48753f127fSDimitry Andric input_iterator _InIter2, 49753f127fSDimitry Andric sentinel_for<_InIter2> _Sent2, 50753f127fSDimitry Andric weakly_incrementable _OutIter, 51753f127fSDimitry Andric class _Comp = less, 52753f127fSDimitry Andric class _Proj1 = identity, 53753f127fSDimitry Andric class _Proj2 = identity> 54753f127fSDimitry Andric requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> operator__fn55753f127fSDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_intersection_result<_InIter1, _InIter2, _OutIter> operator()( 56753f127fSDimitry Andric _InIter1 __first1, 57753f127fSDimitry Andric _Sent1 __last1, 58753f127fSDimitry Andric _InIter2 __first2, 59753f127fSDimitry Andric _Sent2 __last2, 60753f127fSDimitry Andric _OutIter __result, 61753f127fSDimitry Andric _Comp __comp = {}, 62753f127fSDimitry Andric _Proj1 __proj1 = {}, 63753f127fSDimitry Andric _Proj2 __proj2 = {}) const { 64753f127fSDimitry Andric auto __ret = std::__set_intersection<_RangeAlgPolicy>( 65753f127fSDimitry Andric std::move(__first1), 66753f127fSDimitry Andric std::move(__last1), 67753f127fSDimitry Andric std::move(__first2), 68753f127fSDimitry Andric std::move(__last2), 69753f127fSDimitry Andric std::move(__result), 70753f127fSDimitry Andric ranges::__make_projected_comp(__comp, __proj1, __proj2)); 71753f127fSDimitry Andric return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 72753f127fSDimitry Andric } 73753f127fSDimitry Andric 7406c3fb27SDimitry Andric template <input_range _Range1, 75753f127fSDimitry Andric input_range _Range2, 76753f127fSDimitry Andric weakly_incrementable _OutIter, 77753f127fSDimitry Andric class _Comp = less, 78753f127fSDimitry Andric class _Proj1 = identity, 79753f127fSDimitry Andric class _Proj2 = identity> 8006c3fb27SDimitry Andric requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> 81753f127fSDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_intersection_result<borrowed_iterator_t<_Range1>, 82753f127fSDimitry Andric borrowed_iterator_t<_Range2>, 83753f127fSDimitry Andric _OutIter> operator__fn8406c3fb27SDimitry Andric operator()(_Range1&& __range1, 85753f127fSDimitry Andric _Range2&& __range2, 86753f127fSDimitry Andric _OutIter __result, 87753f127fSDimitry Andric _Comp __comp = {}, 88753f127fSDimitry Andric _Proj1 __proj1 = {}, 89753f127fSDimitry Andric _Proj2 __proj2 = {}) const { 90753f127fSDimitry Andric auto __ret = std::__set_intersection<_RangeAlgPolicy>( 91753f127fSDimitry Andric ranges::begin(__range1), 92753f127fSDimitry Andric ranges::end(__range1), 93753f127fSDimitry Andric ranges::begin(__range2), 94753f127fSDimitry Andric ranges::end(__range2), 95753f127fSDimitry Andric std::move(__result), 96753f127fSDimitry Andric ranges::__make_projected_comp(__comp, __proj1, __proj2)); 97753f127fSDimitry Andric return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 98753f127fSDimitry Andric } 99753f127fSDimitry Andric }; 100753f127fSDimitry Andric 101753f127fSDimitry Andric } // namespace __set_intersection 102753f127fSDimitry Andric 103753f127fSDimitry Andric inline namespace __cpo { 104753f127fSDimitry Andric inline constexpr auto set_intersection = __set_intersection::__fn{}; 105753f127fSDimitry Andric } // namespace __cpo 106753f127fSDimitry Andric } // namespace ranges 107753f127fSDimitry Andric 108753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 109753f127fSDimitry Andric 11006c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 111*b3edf446SDimitry Andric 112*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 113*b3edf446SDimitry Andric 114753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_SET_INTERSECTION_H 115