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https://github.com/capstone-engine/llvm-capstone.git
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02540b2f6d
Before this patch, we would fail to implicitly convert the result of predicates to bool, which means we'd potentially perform a copy or move construction of the boolean-testable, which isn't allowed. The same holds true for comparing iterators against sentinels, which is allowed to return a boolean-testable type. We already had tests aiming to ensure correct handling of these types, but they failed to provide appropriate coverage in several cases due to guaranteed RVO. This patch fixes the tests, adds tests for missing algorithms and views, and fixes the actual problems in the code. Fixes #69074
77 lines
2.8 KiB
C++
77 lines
2.8 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_REMOVE_COPY_H
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#define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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#include <__algorithm/in_out_result.h>
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#include <__algorithm/ranges_remove_copy_if.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/projected.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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#if _LIBCPP_STD_VER >= 20
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_LIBCPP_BEGIN_NAMESPACE_STD
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namespace ranges {
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template <class _InIter, class _OutIter>
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using remove_copy_result = in_out_result<_InIter, _OutIter>;
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namespace __remove_copy {
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struct __fn {
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template <input_iterator _InIter,
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sentinel_for<_InIter> _Sent,
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weakly_incrementable _OutIter,
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class _Type,
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class _Proj = identity>
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requires indirectly_copyable<_InIter, _OutIter> &&
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indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _Type*>
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_LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter>
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operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
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auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
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return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj);
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}
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template <input_range _Range, weakly_incrementable _OutIter, class _Type, class _Proj = identity>
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requires indirectly_copyable<iterator_t<_Range>, _OutIter> &&
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indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
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_LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<borrowed_iterator_t<_Range>, _OutIter>
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operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
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auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
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return ranges::__remove_copy_if_impl(
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ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj);
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}
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};
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} // namespace __remove_copy
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inline namespace __cpo {
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inline constexpr auto remove_copy = __remove_copy::__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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#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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