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/make_projected.h>
14 #include <__algorithm/set_symmetric_difference.h>
15 #include <__config>
16 #include <__functional/identity.h>
17 #include <__functional/invoke.h>
18 #include <__functional/ranges_operations.h>
19 #include <__iterator/concepts.h>
20 #include <__iterator/mergeable.h>
21 #include <__ranges/access.h>
22 #include <__ranges/concepts.h>
23 #include <__ranges/dangling.h>
24 #include <__utility/move.h>
25 
26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27 #  pragma GCC system_header
28 #endif
29 
30 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
31 
32 _LIBCPP_BEGIN_NAMESPACE_STD
33 
34 namespace ranges {
35 
36 template <class _InIter1, class _InIter2, class _OutIter>
37 using set_symmetric_difference_result = in_in_out_result<_InIter1, _InIter2, _OutIter>;
38 
39 namespace __set_symmetric_difference {
40 
41 struct __fn {
42   template <
43       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(
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 <
72       input_range _Range1,
73       input_range _Range2,
74       weakly_incrementable _OutIter,
75       class _Comp  = ranges::less,
76       class _Proj1 = identity,
77       class _Proj2 = identity>
78     requires mergeable<
79         iterator_t<_Range1>,
80         iterator_t<_Range2>,
81         _OutIter,
82         _Comp,
83         _Proj1,
84         _Proj2>
85   _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<borrowed_iterator_t<_Range1>,
86                                                                   borrowed_iterator_t<_Range2>,
87                                                                   _OutIter>
88     operator()(
89         _Range1&& __range1,
90         _Range2&& __range2,
91         _OutIter __result,
92         _Comp __comp   = {},
93         _Proj1 __proj1 = {},
94         _Proj2 __proj2 = {}) const {
95     auto __ret = std::__set_symmetric_difference(
96         ranges::begin(__range1),
97         ranges::end(__range1),
98         ranges::begin(__range2),
99         ranges::end(__range2),
100         std::move(__result),
101         ranges::__make_projected_comp(__comp, __proj1, __proj2));
102     return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};
103   }
104 };
105 
106 } // namespace __set_symmetric_difference
107 
108 inline namespace __cpo {
109   inline constexpr auto set_symmetric_difference = __set_symmetric_difference::__fn{};
110 } // namespace __cpo
111 } // namespace ranges
112 
113 _LIBCPP_END_NAMESPACE_STD
114 
115 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
116 #endif // _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H
117