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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_DIFFERENCE_H10#define _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H11 12#include <__algorithm/in_out_result.h>13#include <__algorithm/make_projected.h>14#include <__algorithm/set_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 <__type_traits/decay.h>25#include <__utility/move.h>26#include <__utility/pair.h>27 28#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)29# pragma GCC system_header30#endif31 32_LIBCPP_PUSH_MACROS33#include <__undef_macros>34 35#if _LIBCPP_STD_VER >= 2036 37_LIBCPP_BEGIN_NAMESPACE_STD38 39namespace ranges {40 41template <class _InIter, class _OutIter>42using set_difference_result = in_out_result<_InIter, _OutIter>;43 44struct __set_difference {45 template <input_iterator _InIter1,46 sentinel_for<_InIter1> _Sent1,47 input_iterator _InIter2,48 sentinel_for<_InIter2> _Sent2,49 weakly_incrementable _OutIter,50 class _Comp = less,51 class _Proj1 = identity,52 class _Proj2 = identity>53 requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2>54 _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<_InIter1, _OutIter> operator()(55 _InIter1 __first1,56 _Sent1 __last1,57 _InIter2 __first2,58 _Sent2 __last2,59 _OutIter __result,60 _Comp __comp = {},61 _Proj1 __proj1 = {},62 _Proj2 __proj2 = {}) const {63 auto __ret = std::__set_difference(64 __first1, __last1, __first2, __last2, __result, ranges::__make_projected_comp(__comp, __proj1, __proj2));65 return {std::move(__ret.first), std::move(__ret.second)};66 }67 68 template <input_range _Range1,69 input_range _Range2,70 weakly_incrementable _OutIter,71 class _Comp = less,72 class _Proj1 = identity,73 class _Proj2 = identity>74 requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2>75 _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<borrowed_iterator_t<_Range1>, _OutIter>76 operator()(_Range1&& __range1,77 _Range2&& __range2,78 _OutIter __result,79 _Comp __comp = {},80 _Proj1 __proj1 = {},81 _Proj2 __proj2 = {}) const {82 auto __ret = std::__set_difference(83 ranges::begin(__range1),84 ranges::end(__range1),85 ranges::begin(__range2),86 ranges::end(__range2),87 __result,88 ranges::__make_projected_comp(__comp, __proj1, __proj2));89 return {std::move(__ret.first), std::move(__ret.second)};90 }91};92 93inline namespace __cpo {94inline constexpr auto set_difference = __set_difference{};95} // namespace __cpo96} // namespace ranges97 98_LIBCPP_END_NAMESPACE_STD99 100#endif // _LIBCPP_STD_VER >= 20101 102_LIBCPP_POP_MACROS103 104#endif // _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H105