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_MISMATCH_H 10*4bdff4beSrobert #define _LIBCPP___ALGORITHM_RANGES_MISMATCH_H 11*4bdff4beSrobert 12*4bdff4beSrobert #include <__algorithm/in_in_result.h> 13*4bdff4beSrobert #include <__config> 14*4bdff4beSrobert #include <__functional/identity.h> 15*4bdff4beSrobert #include <__functional/invoke.h> 16*4bdff4beSrobert #include <__functional/ranges_operations.h> 17*4bdff4beSrobert #include <__iterator/concepts.h> 18*4bdff4beSrobert #include <__iterator/indirectly_comparable.h> 19*4bdff4beSrobert #include <__ranges/access.h> 20*4bdff4beSrobert #include <__ranges/concepts.h> 21*4bdff4beSrobert #include <__ranges/dangling.h> 22*4bdff4beSrobert #include <__utility/move.h> 23*4bdff4beSrobert 24*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 25*4bdff4beSrobert # pragma GCC system_header 26*4bdff4beSrobert #endif 27*4bdff4beSrobert 28*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 29*4bdff4beSrobert 30*4bdff4beSrobert #if _LIBCPP_STD_VER > 17 31*4bdff4beSrobert 32*4bdff4beSrobert namespace ranges { 33*4bdff4beSrobert 34*4bdff4beSrobert template <class _I1, class _I2> 35*4bdff4beSrobert using mismatch_result = in_in_result<_I1, _I2>; 36*4bdff4beSrobert 37*4bdff4beSrobert namespace __mismatch { 38*4bdff4beSrobert struct __fn { 39*4bdff4beSrobert template <class _I1, class _S1, class _I2, class _S2, 40*4bdff4beSrobert class _Pred, class _Proj1, class _Proj2> 41*4bdff4beSrobert static _LIBCPP_HIDE_FROM_ABI constexpr 42*4bdff4beSrobert mismatch_result<_I1, _I2> __go__fn43*4bdff4beSrobert __go(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, 44*4bdff4beSrobert _Pred& __pred, _Proj1& __proj1, _Proj2& __proj2) { 45*4bdff4beSrobert while (__first1 != __last1 && __first2 != __last2) { 46*4bdff4beSrobert if (!std::invoke(__pred, std::invoke(__proj1, *__first1), std::invoke(__proj2, *__first2))) 47*4bdff4beSrobert break; 48*4bdff4beSrobert ++__first1; 49*4bdff4beSrobert ++__first2; 50*4bdff4beSrobert } 51*4bdff4beSrobert return {std::move(__first1), std::move(__first2)}; 52*4bdff4beSrobert } 53*4bdff4beSrobert 54*4bdff4beSrobert template <input_iterator _I1, sentinel_for<_I1> _S1, 55*4bdff4beSrobert input_iterator _I2, sentinel_for<_I2> _S2, 56*4bdff4beSrobert class _Pred = ranges::equal_to, class _Proj1 = identity, class _Proj2 = identity> 57*4bdff4beSrobert requires indirectly_comparable<_I1, _I2, _Pred, _Proj1, _Proj2> 58*4bdff4beSrobert _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr operator__fn59*4bdff4beSrobert mismatch_result<_I1, _I2> operator()(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, 60*4bdff4beSrobert _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { 61*4bdff4beSrobert return __go(std::move(__first1), __last1, std::move(__first2), __last2, __pred, __proj1, __proj2); 62*4bdff4beSrobert } 63*4bdff4beSrobert 64*4bdff4beSrobert template <input_range _R1, input_range _R2, 65*4bdff4beSrobert class _Pred = ranges::equal_to, class _Proj1 = identity, class _Proj2 = identity> 66*4bdff4beSrobert requires indirectly_comparable<iterator_t<_R1>, iterator_t<_R2>, _Pred, _Proj1, _Proj2> 67*4bdff4beSrobert _LIBCPP_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr 68*4bdff4beSrobert mismatch_result<borrowed_iterator_t<_R1>, borrowed_iterator_t<_R2>> operator__fn69*4bdff4beSrobert operator()(_R1&& __r1, _R2&& __r2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const { 70*4bdff4beSrobert return __go(ranges::begin(__r1), ranges::end(__r1), ranges::begin(__r2), ranges::end(__r2), 71*4bdff4beSrobert __pred, __proj1, __proj2); 72*4bdff4beSrobert } 73*4bdff4beSrobert }; 74*4bdff4beSrobert } // namespace __mismatch 75*4bdff4beSrobert 76*4bdff4beSrobert inline namespace __cpo { 77*4bdff4beSrobert constexpr inline auto mismatch = __mismatch::__fn{}; 78*4bdff4beSrobert } // namespace __cpo 79*4bdff4beSrobert } // namespace ranges 80*4bdff4beSrobert 81*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 17 82*4bdff4beSrobert 83*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 84*4bdff4beSrobert 85*4bdff4beSrobert #endif // _LIBCPP___ALGORITHM_RANGES_MISMATCH_H 86