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_DIFFERENCE_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H 11753f127fSDimitry Andric 12753f127fSDimitry Andric #include <__algorithm/in_out_result.h> 13bdd1243dSDimitry Andric #include <__algorithm/iterator_operations.h> 14753f127fSDimitry Andric #include <__algorithm/make_projected.h> 15753f127fSDimitry Andric #include <__algorithm/set_difference.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 <__type_traits/decay.h> 26753f127fSDimitry Andric #include <__utility/move.h> 27bdd1243dSDimitry Andric #include <__utility/pair.h> 28753f127fSDimitry Andric 29753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 30753f127fSDimitry Andric # pragma GCC system_header 31753f127fSDimitry Andric #endif 32753f127fSDimitry Andric 33*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 34*b3edf446SDimitry Andric #include <__undef_macros> 35*b3edf446SDimitry Andric 3606c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 37753f127fSDimitry Andric 38753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 39753f127fSDimitry Andric 40753f127fSDimitry Andric namespace ranges { 41753f127fSDimitry Andric 42753f127fSDimitry Andric template <class _InIter, class _OutIter> 43753f127fSDimitry Andric using set_difference_result = in_out_result<_InIter, _OutIter>; 44753f127fSDimitry Andric 45753f127fSDimitry Andric namespace __set_difference { 46753f127fSDimitry Andric 47753f127fSDimitry Andric struct __fn { 4806c3fb27SDimitry Andric template <input_iterator _InIter1, 49753f127fSDimitry Andric sentinel_for<_InIter1> _Sent1, 50753f127fSDimitry Andric input_iterator _InIter2, 51753f127fSDimitry Andric sentinel_for<_InIter2> _Sent2, 52753f127fSDimitry Andric weakly_incrementable _OutIter, 53753f127fSDimitry Andric class _Comp = less, 54753f127fSDimitry Andric class _Proj1 = identity, 55753f127fSDimitry Andric class _Proj2 = identity> 56753f127fSDimitry Andric requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> operator__fn57753f127fSDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<_InIter1, _OutIter> operator()( 58753f127fSDimitry Andric _InIter1 __first1, 59753f127fSDimitry Andric _Sent1 __last1, 60753f127fSDimitry Andric _InIter2 __first2, 61753f127fSDimitry Andric _Sent2 __last2, 62753f127fSDimitry Andric _OutIter __result, 63753f127fSDimitry Andric _Comp __comp = {}, 64753f127fSDimitry Andric _Proj1 __proj1 = {}, 65753f127fSDimitry Andric _Proj2 __proj2 = {}) const { 66bdd1243dSDimitry Andric auto __ret = std::__set_difference<_RangeAlgPolicy>( 67753f127fSDimitry Andric __first1, __last1, __first2, __last2, __result, ranges::__make_projected_comp(__comp, __proj1, __proj2)); 68753f127fSDimitry Andric return {std::move(__ret.first), std::move(__ret.second)}; 69753f127fSDimitry Andric } 70753f127fSDimitry Andric 7106c3fb27SDimitry Andric template <input_range _Range1, 72753f127fSDimitry Andric input_range _Range2, 73753f127fSDimitry Andric weakly_incrementable _OutIter, 74753f127fSDimitry Andric class _Comp = less, 75753f127fSDimitry Andric class _Proj1 = identity, 76753f127fSDimitry Andric class _Proj2 = identity> 77753f127fSDimitry Andric requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> 78753f127fSDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<borrowed_iterator_t<_Range1>, _OutIter> operator__fn7906c3fb27SDimitry Andric operator()(_Range1&& __range1, 80753f127fSDimitry Andric _Range2&& __range2, 81753f127fSDimitry Andric _OutIter __result, 82753f127fSDimitry Andric _Comp __comp = {}, 83753f127fSDimitry Andric _Proj1 __proj1 = {}, 84753f127fSDimitry Andric _Proj2 __proj2 = {}) const { 85bdd1243dSDimitry Andric auto __ret = std::__set_difference<_RangeAlgPolicy>( 86753f127fSDimitry Andric ranges::begin(__range1), 87753f127fSDimitry Andric ranges::end(__range1), 88753f127fSDimitry Andric ranges::begin(__range2), 89753f127fSDimitry Andric ranges::end(__range2), 90753f127fSDimitry Andric __result, 91753f127fSDimitry Andric ranges::__make_projected_comp(__comp, __proj1, __proj2)); 92753f127fSDimitry Andric return {std::move(__ret.first), std::move(__ret.second)}; 93753f127fSDimitry Andric } 94753f127fSDimitry Andric }; 95753f127fSDimitry Andric 96753f127fSDimitry Andric } // namespace __set_difference 97753f127fSDimitry Andric 98753f127fSDimitry Andric inline namespace __cpo { 99753f127fSDimitry Andric inline constexpr auto set_difference = __set_difference::__fn{}; 100753f127fSDimitry Andric } // namespace __cpo 101753f127fSDimitry Andric } // namespace ranges 102753f127fSDimitry Andric 103753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 104753f127fSDimitry Andric 10506c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 106*b3edf446SDimitry Andric 107*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 108*b3edf446SDimitry Andric 109753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H 110