5aa03b648b
This commit does a pass of clang-format over files in libc++ that don't require major changes to conform to our style guide, or for which we're not overly concerned about conflicting with in-flight patches or hindering the git blame. This roughly covers: - benchmarks - range algorithms - concepts - type traits I did a manual verification of all the changes, and in particular I applied clang-format on/off annotations in a few places where the result was less readable after than before. This was not necessary in a lot of places, however I did find that clang-format had pretty bad taste when it comes to formatting concepts. Differential Revision: https://reviews.llvm.org/D153140
41 lines
1.3 KiB
C++
41 lines
1.3 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___CONCEPTS_CLASS_OR_ENUM_H
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#define _LIBCPP___CONCEPTS_CLASS_OR_ENUM_H
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#include <__config>
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#include <__type_traits/is_class.h>
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#include <__type_traits/is_enum.h>
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#include <__type_traits/is_union.h>
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#include <__type_traits/remove_cvref.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_BEGIN_NAMESPACE_STD
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#if _LIBCPP_STD_VER >= 20
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// Whether a type is a class type or enumeration type according to the Core wording.
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template <class _Tp>
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concept __class_or_enum = is_class_v<_Tp> || is_union_v<_Tp> || is_enum_v<_Tp>;
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// Work around Clang bug https://llvm.org/PR52970
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// TODO: remove this workaround once libc++ no longer has to support Clang 13 (it was fixed in Clang 14).
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template <class _Tp>
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concept __workaround_52970 = is_class_v<__remove_cvref_t<_Tp>> || is_union_v<__remove_cvref_t<_Tp>>;
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#endif // _LIBCPP_STD_VER >= 20
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___CONCEPTS_CLASS_OR_ENUM_H
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