libcxx/include/__cxx03/__algorithm/ranges_set_symmetric_difference.h

   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 <__cxx03/__algorithm/in_in_out_result.h>
  13 #include <__cxx03/__algorithm/iterator_operations.h>
  14 #include <__cxx03/__algorithm/make_projected.h>
  15 #include <__cxx03/__algorithm/set_symmetric_difference.h>
  16 #include <__cxx03/__config>
  17 #include <__cxx03/__functional/identity.h>
  18 #include <__cxx03/__functional/invoke.h>
  19 #include <__cxx03/__functional/ranges_operations.h>
  20 #include <__cxx03/__iterator/concepts.h>
  21 #include <__cxx03/__iterator/mergeable.h>
  22 #include <__cxx03/__ranges/access.h>
  23 #include <__cxx03/__ranges/concepts.h>
  24 #include <__cxx03/__ranges/dangling.h>
  25 #include <__cxx03/__utility/move.h>
  26
  27 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  28 #  pragma GCC system_header
  29 #endif
  30
  31 _LIBCPP_PUSH_MACROS
  32 #include <__cxx03/__undef_macros>
  33
  34 #if _LIBCPP_STD_VER >= 20
  35
  36 _LIBCPP_BEGIN_NAMESPACE_STD
  37
  38 namespace ranges {
  39
  40 template <class _InIter1, class _InIter2, class _OutIter>
  41 using set_symmetric_difference_result = in_in_out_result<_InIter1, _InIter2, _OutIter>;
  42
  43 namespace __set_symmetric_difference {
  44
  45 struct __fn {
  46   template <input_iterator _InIter1,
  47             sentinel_for<_InIter1> _Sent1,
  48             input_iterator _InIter2,
  49             sentinel_for<_InIter2> _Sent2,
  50             weakly_incrementable _OutIter,
  51             class _Comp  = ranges::less,
  52             class _Proj1 = identity,
  53             class _Proj2 = identity>
  54     requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2>
  55   _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<_InIter1, _InIter2, _OutIter> operator()(
  56       _InIter1 __first1,
  57       _Sent1 __last1,
  58       _InIter2 __first2,
  59       _Sent2 __last2,
  60       _OutIter __result,
  61       _Comp __comp   = {},
  62       _Proj1 __proj1 = {},
  63       _Proj2 __proj2 = {}) const {
  64     auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>(
  65         std::move(__first1),
  66         std::move(__last1),
  67         std::move(__first2),
  68         std::move(__last2),
  69         std::move(__result),
  70         ranges::__make_projected_comp(__comp, __proj1, __proj2));
  71     return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};
  72   }
  73
  74   template <input_range _Range1,
  75             input_range _Range2,
  76             weakly_incrementable _OutIter,
  77             class _Comp  = ranges::less,
  78             class _Proj1 = identity,
  79             class _Proj2 = identity>
  80     requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2>
  81   _LIBCPP_HIDE_FROM_ABI constexpr set_symmetric_difference_result<borrowed_iterator_t<_Range1>,
  82                                                                   borrowed_iterator_t<_Range2>,
  83                                                                   _OutIter>
  84   operator()(_Range1&& __range1,
  85              _Range2&& __range2,
  86              _OutIter __result,
  87              _Comp __comp   = {},
  88              _Proj1 __proj1 = {},
  89              _Proj2 __proj2 = {}) const {
  90     auto __ret = std::__set_symmetric_difference<_RangeAlgPolicy>(
  91         ranges::begin(__range1),
  92         ranges::end(__range1),
  93         ranges::begin(__range2),
  94         ranges::end(__range2),
  95         std::move(__result),
  96         ranges::__make_projected_comp(__comp, __proj1, __proj2));
  97     return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};
  98   }
  99 };
 100
 101 } // namespace __set_symmetric_difference
 102
 103 inline namespace __cpo {
 104 inline constexpr auto set_symmetric_difference = __set_symmetric_difference::__fn{};
 105 } // namespace __cpo
 106 } // namespace ranges
 107
 108 _LIBCPP_END_NAMESPACE_STD
 109
 110 #endif // _LIBCPP_STD_VER >= 20
 111
 112 _LIBCPP_POP_MACROS
 113
 114 #endif // _LIBCPP___ALGORITHM_RANGES_SET_SYMMETRIC_DIFFERENCE_H