1*4bdff4beSrobert //===----------------------------------------------------------------------===// 2*4bdff4beSrobert // 3*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information. 5*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*4bdff4beSrobert // 7*4bdff4beSrobert //===----------------------------------------------------------------------===// 8*4bdff4beSrobert 9*4bdff4beSrobert #ifndef _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H 10*4bdff4beSrobert #define _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H 11*4bdff4beSrobert 12*4bdff4beSrobert #include <__algorithm/in_out_result.h> 13*4bdff4beSrobert #include <__algorithm/iterator_operations.h> 14*4bdff4beSrobert #include <__algorithm/make_projected.h> 15*4bdff4beSrobert #include <__algorithm/set_difference.h> 16*4bdff4beSrobert #include <__config> 17*4bdff4beSrobert #include <__functional/identity.h> 18*4bdff4beSrobert #include <__functional/invoke.h> 19*4bdff4beSrobert #include <__functional/ranges_operations.h> 20*4bdff4beSrobert #include <__iterator/concepts.h> 21*4bdff4beSrobert #include <__iterator/mergeable.h> 22*4bdff4beSrobert #include <__ranges/access.h> 23*4bdff4beSrobert #include <__ranges/concepts.h> 24*4bdff4beSrobert #include <__ranges/dangling.h> 25*4bdff4beSrobert #include <__type_traits/decay.h> 26*4bdff4beSrobert #include <__utility/move.h> 27*4bdff4beSrobert #include <__utility/pair.h> 28*4bdff4beSrobert 29*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 30*4bdff4beSrobert # pragma GCC system_header 31*4bdff4beSrobert #endif 32*4bdff4beSrobert 33*4bdff4beSrobert #if _LIBCPP_STD_VER > 17 34*4bdff4beSrobert 35*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 36*4bdff4beSrobert 37*4bdff4beSrobert namespace ranges { 38*4bdff4beSrobert 39*4bdff4beSrobert template <class _InIter, class _OutIter> 40*4bdff4beSrobert using set_difference_result = in_out_result<_InIter, _OutIter>; 41*4bdff4beSrobert 42*4bdff4beSrobert namespace __set_difference { 43*4bdff4beSrobert 44*4bdff4beSrobert struct __fn { 45*4bdff4beSrobert template < 46*4bdff4beSrobert input_iterator _InIter1, 47*4bdff4beSrobert sentinel_for<_InIter1> _Sent1, 48*4bdff4beSrobert input_iterator _InIter2, 49*4bdff4beSrobert sentinel_for<_InIter2> _Sent2, 50*4bdff4beSrobert weakly_incrementable _OutIter, 51*4bdff4beSrobert class _Comp = less, 52*4bdff4beSrobert class _Proj1 = identity, 53*4bdff4beSrobert class _Proj2 = identity> 54*4bdff4beSrobert requires mergeable<_InIter1, _InIter2, _OutIter, _Comp, _Proj1, _Proj2> operator__fn55*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<_InIter1, _OutIter> operator()( 56*4bdff4beSrobert _InIter1 __first1, 57*4bdff4beSrobert _Sent1 __last1, 58*4bdff4beSrobert _InIter2 __first2, 59*4bdff4beSrobert _Sent2 __last2, 60*4bdff4beSrobert _OutIter __result, 61*4bdff4beSrobert _Comp __comp = {}, 62*4bdff4beSrobert _Proj1 __proj1 = {}, 63*4bdff4beSrobert _Proj2 __proj2 = {}) const { 64*4bdff4beSrobert auto __ret = std::__set_difference<_RangeAlgPolicy>( 65*4bdff4beSrobert __first1, __last1, __first2, __last2, __result, ranges::__make_projected_comp(__comp, __proj1, __proj2)); 66*4bdff4beSrobert return {std::move(__ret.first), std::move(__ret.second)}; 67*4bdff4beSrobert } 68*4bdff4beSrobert 69*4bdff4beSrobert template < 70*4bdff4beSrobert input_range _Range1, 71*4bdff4beSrobert input_range _Range2, 72*4bdff4beSrobert weakly_incrementable _OutIter, 73*4bdff4beSrobert class _Comp = less, 74*4bdff4beSrobert class _Proj1 = identity, 75*4bdff4beSrobert class _Proj2 = identity> 76*4bdff4beSrobert requires mergeable<iterator_t<_Range1>, iterator_t<_Range2>, _OutIter, _Comp, _Proj1, _Proj2> 77*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI constexpr set_difference_result<borrowed_iterator_t<_Range1>, _OutIter> operator__fn78*4bdff4beSrobert operator()( 79*4bdff4beSrobert _Range1&& __range1, 80*4bdff4beSrobert _Range2&& __range2, 81*4bdff4beSrobert _OutIter __result, 82*4bdff4beSrobert _Comp __comp = {}, 83*4bdff4beSrobert _Proj1 __proj1 = {}, 84*4bdff4beSrobert _Proj2 __proj2 = {}) const { 85*4bdff4beSrobert auto __ret = std::__set_difference<_RangeAlgPolicy>( 86*4bdff4beSrobert ranges::begin(__range1), 87*4bdff4beSrobert ranges::end(__range1), 88*4bdff4beSrobert ranges::begin(__range2), 89*4bdff4beSrobert ranges::end(__range2), 90*4bdff4beSrobert __result, 91*4bdff4beSrobert ranges::__make_projected_comp(__comp, __proj1, __proj2)); 92*4bdff4beSrobert return {std::move(__ret.first), std::move(__ret.second)}; 93*4bdff4beSrobert } 94*4bdff4beSrobert }; 95*4bdff4beSrobert 96*4bdff4beSrobert } // namespace __set_difference 97*4bdff4beSrobert 98*4bdff4beSrobert inline namespace __cpo { 99*4bdff4beSrobert inline constexpr auto set_difference = __set_difference::__fn{}; 100*4bdff4beSrobert } // namespace __cpo 101*4bdff4beSrobert } // namespace ranges 102*4bdff4beSrobert 103*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 104*4bdff4beSrobert 105*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 17 106*4bdff4beSrobert #endif // _LIBCPP___ALGORITHM_RANGES_SET_DIFFERENCE_H 107