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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_RANGES_SET_UNION_H10#define _LIBCPP___ALGORITHM_RANGES_SET_UNION_H11 12#include <__algorithm/in_in_out_result.h>13#include <__algorithm/make_projected.h>14#include <__algorithm/set_union.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/iterator_traits.h>21#include <__iterator/mergeable.h>22#include <__iterator/projected.h>23#include <__ranges/access.h>24#include <__ranges/concepts.h>25#include <__ranges/dangling.h>26#include <__utility/forward.h>27#include <__utility/move.h>28 29#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)30# pragma GCC system_header31#endif32 33_LIBCPP_PUSH_MACROS34#include <__undef_macros>35 36#if _LIBCPP_STD_VER >= 2037 38_LIBCPP_BEGIN_NAMESPACE_STD39 40namespace ranges {41 42template <class _InIter1, class _InIter2, class _OutIter>43using set_union_result = in_in_out_result<_InIter1, _InIter2, _OutIter>;44 45struct __set_union {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_union_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_union(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_union_result<borrowed_iterator_t<_Range1>, borrowed_iterator_t<_Range2>, _OutIter>82 operator()(_Range1&& __range1,83 _Range2&& __range2,84 _OutIter __result,85 _Comp __comp = {},86 _Proj1 __proj1 = {},87 _Proj2 __proj2 = {}) const {88 auto __ret = std::__set_union(89 ranges::begin(__range1),90 ranges::end(__range1),91 ranges::begin(__range2),92 ranges::end(__range2),93 std::move(__result),94 ranges::__make_projected_comp(__comp, __proj1, __proj2));95 return {std::move(__ret.__in1_), std::move(__ret.__in2_), std::move(__ret.__out_)};96 }97};98 99inline namespace __cpo {100inline constexpr auto set_union = __set_union{};101} // namespace __cpo102} // namespace ranges103 104_LIBCPP_END_NAMESPACE_STD105 106#endif // _LIBCPP_STD_VER >= 20107 108_LIBCPP_POP_MACROS109 110#endif // _LIBCPP___ALGORITHM_RANGES_SET_UNION_H111