04b45450ac
The _LIBCPP_PSTL_CUSTOMIZATION_POINT macro was assuming that the policy was called _RawPolicy and referencing it by name. It happened to always work but this was definitely accidental and an oversight in the original implementation. This patch fixes that by passing the policy to the macro explicitly. Noticed while reviewing #66968.
45 lines
1.7 KiB
C++
45 lines
1.7 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_PSTL_FRONTEND_DISPATCH
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#define _LIBCPP___ALGORITHM_PSTL_FRONTEND_DISPATCH
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#include <__config>
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#include <__type_traits/is_callable.h>
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#include <__utility/forward.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 >= 17
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_LIBCPP_BEGIN_NAMESPACE_STD
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# define _LIBCPP_PSTL_CUSTOMIZATION_POINT(name, policy) \
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[](auto&&... __args) -> decltype(std::name<policy>( \
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typename __select_backend<policy>::type{}, std::forward<decltype(__args)>(__args)...)) { \
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return std::name<policy>(typename __select_backend<policy>::type{}, std::forward<decltype(__args)>(__args)...); \
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}
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template <class _SpecializedImpl, class _GenericImpl, class... _Args>
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_LIBCPP_HIDE_FROM_ABI decltype(auto)
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__pstl_frontend_dispatch(_SpecializedImpl __specialized_impl, _GenericImpl __generic_impl, _Args&&... __args) {
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if constexpr (__is_callable<_SpecializedImpl, _Args...>::value) {
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return __specialized_impl(std::forward<_Args>(__args)...);
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} else {
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return __generic_impl(std::forward<_Args>(__args)...);
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}
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}
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP_STD_VER >= 17
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#endif // _LIBCPP___ALGORITHM_PSTL_FRONTEND_DISPATCH
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