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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_MISMATCH_H10#define _LIBCPP___ALGORITHM_RANGES_MISMATCH_H11 12#include <__algorithm/in_in_result.h>13#include <__algorithm/mismatch.h>14#include <__algorithm/unwrap_range.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/indirectly_comparable.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_header28#endif29 30_LIBCPP_PUSH_MACROS31#include <__undef_macros>32 33_LIBCPP_BEGIN_NAMESPACE_STD34 35#if _LIBCPP_STD_VER >= 2036 37namespace ranges {38 39template <class _I1, class _I2>40using mismatch_result = in_in_result<_I1, _I2>;41 42struct __mismatch {43 template <class _I1, class _S1, class _I2, class _S2, class _Pred, class _Proj1, class _Proj2>44 static _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2>45 __go(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred& __pred, _Proj1& __proj1, _Proj2& __proj2) {46 if constexpr (forward_iterator<_I1> && forward_iterator<_I2>) {47 auto __range1 = std::__unwrap_range(__first1, __last1);48 auto __range2 = std::__unwrap_range(__first2, __last2);49 auto __res =50 std::__mismatch(__range1.first, __range1.second, __range2.first, __range2.second, __pred, __proj1, __proj2);51 return {std::__rewrap_range<_S1>(__first1, __res.first), std::__rewrap_range<_S2>(__first2, __res.second)};52 } else {53 auto __res = std::__mismatch(54 std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __pred, __proj1, __proj2);55 return {std::move(__res.first), std::move(__res.second)};56 }57 }58 59 template <input_iterator _I1,60 sentinel_for<_I1> _S1,61 input_iterator _I2,62 sentinel_for<_I2> _S2,63 class _Pred = ranges::equal_to,64 class _Proj1 = identity,65 class _Proj2 = identity>66 requires indirectly_comparable<_I1, _I2, _Pred, _Proj1, _Proj2>67 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2> operator()(68 _I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {})69 const {70 return __go(std::move(__first1), __last1, std::move(__first2), __last2, __pred, __proj1, __proj2);71 }72 73 template <input_range _R1,74 input_range _R2,75 class _Pred = ranges::equal_to,76 class _Proj1 = identity,77 class _Proj2 = identity>78 requires indirectly_comparable<iterator_t<_R1>, iterator_t<_R2>, _Pred, _Proj1, _Proj2>79 [[nodiscard]]80 _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<borrowed_iterator_t<_R1>, borrowed_iterator_t<_R2>>81 operator()(_R1&& __r1, _R2&& __r2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const {82 return __go(83 ranges::begin(__r1), ranges::end(__r1), ranges::begin(__r2), ranges::end(__r2), __pred, __proj1, __proj2);84 }85};86 87inline namespace __cpo {88constexpr inline auto mismatch = __mismatch{};89} // namespace __cpo90} // namespace ranges91 92#endif // _LIBCPP_STD_VER >= 2093 94_LIBCPP_END_NAMESPACE_STD95 96_LIBCPP_POP_MACROS97 98#endif // _LIBCPP___ALGORITHM_RANGES_MISMATCH_H99