e78f53d1e8
This reverts commit 68c04b0ae62d8431d72d8b47fc13008002ee4387. This disables the IWYU mapping that caused the failure, since the headers aren't reachable for now. This is the first part of the "Freezing C++03 headers" proposal explained in https://discourse.llvm.org/t/rfc-freezing-c-03-headers-in-libc/77319/58. This patch mechanically copies the headers as of the LLVM 19.1 release into a subdirectory of libc++ so that we can start using these headers when building in C++03 mode. We are going to be backporting important changes to that copy of the headers until the LLVM 21 release. After the LLVM 21 release, only critical bugfixes will be fixed in the C++03 copy of the headers. This patch only performs a copy of the headers -- these headers are still unused by the rest of the codebase.
110 lines
3.5 KiB
C++
110 lines
3.5 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_EQUAL_H
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#define _LIBCPP___ALGORITHM_RANGES_EQUAL_H
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#include <__algorithm/equal.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/distance.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 <__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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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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namespace __equal {
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struct __fn {
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template <input_iterator _Iter1,
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sentinel_for<_Iter1> _Sent1,
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input_iterator _Iter2,
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sentinel_for<_Iter2> _Sent2,
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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<_Iter1, _Iter2, _Pred, _Proj1, _Proj2>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(
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_Iter1 __first1,
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_Sent1 __last1,
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_Iter2 __first2,
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_Sent2 __last2,
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_Pred __pred = {},
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_Proj1 __proj1 = {},
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_Proj2 __proj2 = {}) const {
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if constexpr (sized_sentinel_for<_Sent1, _Iter1> && sized_sentinel_for<_Sent2, _Iter2>) {
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if (__last1 - __first1 != __last2 - __first2)
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return false;
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}
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auto __unwrapped1 = std::__unwrap_range(std::move(__first1), std::move(__last1));
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auto __unwrapped2 = std::__unwrap_range(std::move(__first2), std::move(__last2));
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return std::__equal_impl(
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std::move(__unwrapped1.first),
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std::move(__unwrapped1.second),
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std::move(__unwrapped2.first),
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std::move(__unwrapped2.second),
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__pred,
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__proj1,
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__proj2);
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}
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template <input_range _Range1,
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input_range _Range2,
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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<_Range1>, iterator_t<_Range2>, _Pred, _Proj1, _Proj2>
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[[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool operator()(
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_Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) const {
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if constexpr (sized_range<_Range1> && sized_range<_Range2>) {
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if (ranges::distance(__range1) != ranges::distance(__range2))
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return false;
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}
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auto __unwrapped1 = std::__unwrap_range(ranges::begin(__range1), ranges::end(__range1));
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auto __unwrapped2 = std::__unwrap_range(ranges::begin(__range2), ranges::end(__range2));
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return std::__equal_impl(
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std::move(__unwrapped1.first),
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std::move(__unwrapped1.second),
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std::move(__unwrapped2.first),
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std::move(__unwrapped2.second),
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__pred,
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__proj1,
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__proj2);
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return false;
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}
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};
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} // namespace __equal
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inline namespace __cpo {
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inline constexpr auto equal = __equal::__fn{};
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} // namespace __cpo
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} // namespace ranges
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_POP_MACROS
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#endif // _LIBCPP___ALGORITHM_RANGES_EQUAL_H
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