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_UNION_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_SET_UNION_H 11753f127fSDimitry Andric 12753f127fSDimitry Andric #include <__algorithm/in_in_out_result.h> 13bdd1243dSDimitry Andric #include <__algorithm/iterator_operations.h> 14753f127fSDimitry Andric #include <__algorithm/make_projected.h> 15753f127fSDimitry Andric #include <__algorithm/set_union.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/iterator_traits.h> 22753f127fSDimitry Andric #include <__iterator/mergeable.h> 23753f127fSDimitry Andric #include <__iterator/projected.h> 24753f127fSDimitry Andric #include <__ranges/access.h> 25753f127fSDimitry Andric #include <__ranges/concepts.h> 26753f127fSDimitry Andric #include <__ranges/dangling.h> 27753f127fSDimitry Andric #include <__utility/forward.h> 28753f127fSDimitry Andric #include <__utility/move.h> 29753f127fSDimitry Andric 30753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 31753f127fSDimitry Andric # pragma GCC system_header 32753f127fSDimitry Andric #endif 33753f127fSDimitry Andric 34*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 35*b3edf446SDimitry Andric #include <__undef_macros> 36*b3edf446SDimitry Andric 3706c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 38753f127fSDimitry Andric 39753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 40753f127fSDimitry Andric 41753f127fSDimitry Andric namespace ranges { 42753f127fSDimitry Andric 43753f127fSDimitry Andric template <class _InIter1, class _InIter2, class _OutIter> 44753f127fSDimitry Andric using set_union_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; 45753f127fSDimitry Andric 46753f127fSDimitry Andric namespace __set_union { 47753f127fSDimitry Andric 48753f127fSDimitry Andric struct __fn { 4906c3fb27SDimitry Andric template <input_iterator _InIter1, 50fcaf7f86SDimitry Andric sentinel_for<_InIter1> _Sent1, 51fcaf7f86SDimitry Andric input_iterator _InIter2, 52fcaf7f86SDimitry Andric sentinel_for<_InIter2> _Sent2, 53fcaf7f86SDimitry Andric weakly_incrementable _OutIter, 54fcaf7f86SDimitry Andric class _Comp = ranges::less, 55fcaf7f86SDimitry Andric class _Proj1 = identity, 56fcaf7f86SDimitry Andric class _Proj2 = identity> 57753f127fSDimitry Andric requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> operator__fn58fcaf7f86SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_union_result<_InIter1, _InIter2, _OutIter> operator()( 59fcaf7f86SDimitry Andric _InIter1 __first1, 60fcaf7f86SDimitry Andric _Sent1 __last1, 61fcaf7f86SDimitry Andric _InIter2 __first2, 62fcaf7f86SDimitry Andric _Sent2 __last2, 63fcaf7f86SDimitry Andric _OutIter __result, 64fcaf7f86SDimitry Andric _Comp __comp = {}, 65fcaf7f86SDimitry Andric _Proj1 __proj1 = {}, 66fcaf7f86SDimitry Andric _Proj2 __proj2 = {}) const { 67bdd1243dSDimitry Andric auto __ret = std::__set_union<_RangeAlgPolicy>( 68fcaf7f86SDimitry Andric std::move(__first1), 69fcaf7f86SDimitry Andric std::move(__last1), 70fcaf7f86SDimitry Andric std::move(__first2), 71fcaf7f86SDimitry Andric std::move(__last2), 72fcaf7f86SDimitry Andric std::move(__result), 73fcaf7f86SDimitry Andric ranges::__make_projected_comp(__comp, __proj1, __proj2)); 74fcaf7f86SDimitry Andric return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 75753f127fSDimitry Andric } 76753f127fSDimitry Andric 7706c3fb27SDimitry Andric template <input_range _Range1, 78fcaf7f86SDimitry Andric input_range _Range2, 79fcaf7f86SDimitry Andric weakly_incrementable _OutIter, 80fcaf7f86SDimitry Andric class _Comp = ranges::less, 81fcaf7f86SDimitry Andric class _Proj1 = identity, 82fcaf7f86SDimitry Andric class _Proj2 = identity> 8306c3fb27SDimitry Andric requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> 8406c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_union_result<borrowed_iterator_t<_Range1>, borrowed_iterator_t<_Range2>, _OutIter> operator__fn8506c3fb27SDimitry Andric operator()(_Range1&& __range1, 86fcaf7f86SDimitry Andric _Range2&& __range2, 87fcaf7f86SDimitry Andric _OutIter __result, 88fcaf7f86SDimitry Andric _Comp __comp = {}, 89fcaf7f86SDimitry Andric _Proj1 __proj1 = {}, 90fcaf7f86SDimitry Andric _Proj2 __proj2 = {}) const { 91bdd1243dSDimitry Andric auto __ret = std::__set_union<_RangeAlgPolicy>( 92fcaf7f86SDimitry Andric ranges::begin(__range1), 93fcaf7f86SDimitry Andric ranges::end(__range1), 94fcaf7f86SDimitry Andric ranges::begin(__range2), 95fcaf7f86SDimitry Andric ranges::end(__range2), 96fcaf7f86SDimitry Andric std::move(__result), 97fcaf7f86SDimitry Andric ranges::__make_projected_comp(__comp, __proj1, __proj2)); 98fcaf7f86SDimitry Andric return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 99753f127fSDimitry Andric } 100753f127fSDimitry Andric }; 101753f127fSDimitry Andric 102753f127fSDimitry Andric } // namespace __set_union 103753f127fSDimitry Andric 104753f127fSDimitry Andric inline namespace __cpo { 105753f127fSDimitry Andric inline constexpr auto set_union = __set_union::__fn{}; 106753f127fSDimitry Andric } // namespace __cpo 107753f127fSDimitry Andric } // namespace ranges 108753f127fSDimitry Andric 109753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 110753f127fSDimitry Andric 11106c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 112753f127fSDimitry Andric 113*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 114*b3edf446SDimitry Andric 115753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_SET_UNION_H 116