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d10dc5a06f
We originally put implementation-detail function objects into individual namespaces for `std::ranges` without a good reason for doing so. This practice was continued, presumably because there was prior art. Since there's no reason to keep these namespaces, this commit removes them, which will slightly impact binary size. This commit does not apply to CPOs, some of which need additional work.
99 lines
3.6 KiB
C++
99 lines
3.6 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ALGORITHM_RANGES_MISMATCH_H
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#define _LIBCPP___ALGORITHM_RANGES_MISMATCH_H
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#include <__algorithm/in_in_result.h>
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#include <__algorithm/mismatch.h>
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#include <__algorithm/unwrap_range.h>
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#include <__config>
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#include <__functional/identity.h>
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#include <__functional/invoke.h>
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#include <__functional/ranges_operations.h>
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#include <__iterator/concepts.h>
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#include <__iterator/indirectly_comparable.h>
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#include <__ranges/access.h>
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#include <__ranges/concepts.h>
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#include <__ranges/dangling.h>
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#include <__utility/move.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_PUSH_MACROS
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#include <__undef_macros>
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_LIBCPP_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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namespace ranges {
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template <class _I1, class _I2>
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using mismatch_result = in_in_result<_I1, _I2>;
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struct __mismatch {
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template <class _I1, class _S1, class _I2, class _S2, class _Pred, class _Proj1, class _Proj2>
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static _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2>
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__go(_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred& __pred, _Proj1& __proj1, _Proj2& __proj2) {
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if constexpr (forward_iterator<_I1> && forward_iterator<_I2>) {
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auto __range1 = std::__unwrap_range(__first1, __last1);
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auto __range2 = std::__unwrap_range(__first2, __last2);
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auto __res =
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std::__mismatch(__range1.first, __range1.second, __range2.first, __range2.second, __pred, __proj1, __proj2);
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return {std::__rewrap_range<_S1>(__first1, __res.first), std::__rewrap_range<_S2>(__first2, __res.second)};
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} else {
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auto __res = std::__mismatch(
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std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __pred, __proj1, __proj2);
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return {std::move(__res.first), std::move(__res.second)};
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}
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}
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template <input_iterator _I1,
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sentinel_for<_I1> _S1,
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input_iterator _I2,
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sentinel_for<_I2> _S2,
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class _Pred = ranges::equal_to,
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class _Proj1 = identity,
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class _Proj2 = identity>
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requires indirectly_comparable<_I1, _I2, _Pred, _Proj1, _Proj2>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<_I1, _I2> operator()(
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_I1 __first1, _S1 __last1, _I2 __first2, _S2 __last2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {})
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const {
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return __go(std::move(__first1), __last1, std::move(__first2), __last2, __pred, __proj1, __proj2);
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}
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template <input_range _R1,
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input_range _R2,
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class _Pred = ranges::equal_to,
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class _Proj1 = identity,
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class _Proj2 = identity>
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requires indirectly_comparable<iterator_t<_R1>, iterator_t<_R2>, _Pred, _Proj1, _Proj2>
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[[nodiscard]]
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_LIBCPP_HIDE_FROM_ABI constexpr mismatch_result<borrowed_iterator_t<_R1>, borrowed_iterator_t<_R2>>
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operator()(_R1&& __r1, _R2&& __r2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const {
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return __go(
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ranges::begin(__r1), ranges::end(__r1), ranges::begin(__r2), ranges::end(__r2), __pred, __proj1, __proj2);
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}
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};
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inline namespace __cpo {
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constexpr inline auto mismatch = __mismatch{};
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} // namespace __cpo
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} // namespace ranges
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___ALGORITHM_RANGES_MISMATCH_H
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