ec11388b33
Rename the `__tuple` directory in libc++ headers to `__tuple_dir` to avoid file collision when installing. Historically, `__tuple` has been a file and it has been replaced by a directory in 2d52c6bfae801b016dd3627b8c0e7c4a99405549. Replacing a regular file with a directory (or more importantly, the other way around when downgrading) is not universally supported. Since this is an internal header, its actual name should not matter, so just rename it to avoid problems. Differential Revision: https://reviews.llvm.org/D139270
76 lines
2.4 KiB
C++
76 lines
2.4 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___TUPLE_TUPLE_SIZE_H
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#define _LIBCPP___TUPLE_TUPLE_SIZE_H
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#include <__config>
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#include <__fwd/tuple.h>
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#include <__tuple_dir/tuple_types.h>
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#include <__type_traits/is_const.h>
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#include <__type_traits/is_volatile.h>
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#include <cstddef>
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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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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size;
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#if !defined(_LIBCPP_CXX03_LANG)
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template <class _Tp, class...>
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using __enable_if_tuple_size_imp = _Tp;
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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const _Tp,
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__enable_if_t<!is_volatile<_Tp>::value>,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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volatile _Tp,
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__enable_if_t<!is_const<_Tp>::value>,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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template <class _Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__enable_if_tuple_size_imp<
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const volatile _Tp,
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integral_constant<size_t, sizeof(tuple_size<_Tp>)>>>
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: public integral_constant<size_t, tuple_size<_Tp>::value> {};
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#else
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<const _Tp> : public tuple_size<_Tp> {};
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<volatile _Tp> : public tuple_size<_Tp> {};
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template <class _Tp> struct _LIBCPP_TEMPLATE_VIS tuple_size<const volatile _Tp> : public tuple_size<_Tp> {};
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#endif
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#ifndef _LIBCPP_CXX03_LANG
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template <class ..._Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<tuple<_Tp...> >
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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template <class ..._Tp>
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struct _LIBCPP_TEMPLATE_VIS tuple_size<__tuple_types<_Tp...> >
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: public integral_constant<size_t, sizeof...(_Tp)>
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{
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};
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#endif // _LIBCPP_CXX03_LANG
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___TUPLE_TUPLE_SIZE_H
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