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_SET_SYMMETRIC_DIFFERENCE_H 10 #define _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H 11 12 #include <__algorithm/in_in_out_result.h> 13 #include <__algorithm/iterator_operations.h> 14 #include <__algorithm/make_projected.h> 15 #include <__algorithm/set_symmetric_difference.h> 16 #include <__config> 17 #include <__functional/identity.h> 18 #include <__functional/invoke.h> 19 #include <__functional/ranges_operations.h> 20 #include <__iterator/concepts.h> 21 #include <__iterator/mergeable.h> 22 #include <__ranges/access.h> 23 #include <__ranges/concepts.h> 24 #include <__ranges/dangling.h> 25 #include <__utility/move.h> 26 27 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 28 # pragma GCC system_header 29 #endif 30 31 #if _LIBCPP_STD_VER >= 20 32 33 _LIBCPP_BEGIN_NAMESPACE_STD 34 35 namespace ranges { 36 37 template <class _InIter1, class _InIter2, class _OutIter> 38 using set_symmetric_difference_result = in_in_out_result<_InIter1, _InIter2, _OutIter>; 39 40 namespace __set_symmetric_difference { 41 42 struct __fn { 43 template <input_iterator _InIter1, 44 sentinel_for<_InIter1> _Sent1, 45 input_iterator _InIter2, 46 sentinel_for<_InIter2> _Sent2, 47 weakly_incrementable _OutIter, 48 class _Comp = ranges::less, 49 class _Proj1 = identity, 50 class _Proj2 = identity> 51 requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> 52 _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<_InIter1, _InIter2, _OutIter> operator()( 53 _InIter1 __first1, 54 _Sent1 __last1, 55 _InIter2 __first2, 56 _Sent2 __last2, 57 _OutIter __result, 58 _Comp __comp = {}, 59 _Proj1 __proj1 = {}, 60 _Proj2 __proj2 = {}) const { 61 auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>( 62 std::move(__first1), 63 std::move(__last1), 64 std::move(__first2), 65 std::move(__last2), 66 std::move(__result), 67 ranges::__make_projected_comp(__comp, __proj1, __proj2)); 68 return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 69 } 70 71 template <input_range _Range1, 72 input_range _Range2, 73 weakly_incrementable _OutIter, 74 class _Comp = ranges::less, 75 class _Proj1 = identity, 76 class _Proj2 = identity> 77 requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> 78 _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<borrowed_iterator_t<_Range1>, 79 borrowed_iterator_t<_Range2>, 80 _OutIter> 81 operator()(_Range1&& __range1, 82 _Range2&& __range2, 83 _OutIter __result, 84 _Comp __comp = {}, 85 _Proj1 __proj1 = {}, 86 _Proj2 __proj2 = {}) const { 87 auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>( 88 ranges::begin(__range1), 89 ranges::end(__range1), 90 ranges::begin(__range2), 91 ranges::end(__range2), 92 std::move(__result), 93 ranges::__make_projected_comp(__comp, __proj1, __proj2)); 94 return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)}; 95 } 96 }; 97 98 } // namespace __set_symmetric_difference 99 100 inline namespace __cpo { 101 inline constexpr auto set_symmetric_difference = __set_symmetric_difference::__fn{}; 102 } // namespace __cpo 103 } // namespace ranges 104 105 _LIBCPP_END_NAMESPACE_STD 106 107 #endif // _LIBCPP_STD_VER >= 20 108 #endif // _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H 109