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2da049a141
This fixes rdar://110330781, which asked for the feature-test macro for std::pmr to take into account the deployment target. It doesn't fix https://llvm.org/PR62212, though, because the availability markup itself must be disabled until some Clang bugs have been fixed. This is pretty vexing, however at least everything should work once those Clang bugs have been fixed. In the meantime, this patch at least adds the required markup (as disabled) and ensures that the feature-test macro for std::pmr is aware of the deployment target requirement. Differential Revision: https://reviews.llvm.org/D135813
111 lines
2.9 KiB
C++
111 lines
2.9 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___FWD_STRING_H
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#define _LIBCPP___FWD_STRING_H
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#include <__availability>
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#include <__config>
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#include <__fwd/memory_resource.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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template <class _CharT>
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struct _LIBCPP_TEMPLATE_VIS char_traits;
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template <>
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struct char_traits<char>;
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#ifndef _LIBCPP_HAS_NO_CHAR8_T
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template <>
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struct char_traits<char8_t>;
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#endif
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template <>
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struct char_traits<char16_t>;
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template <>
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struct char_traits<char32_t>;
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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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template <>
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struct char_traits<wchar_t>;
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#endif
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template <class _Tp>
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class _LIBCPP_TEMPLATE_VIS allocator;
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template <class _CharT, class _Traits = char_traits<_CharT>, class _Allocator = allocator<_CharT> >
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class _LIBCPP_TEMPLATE_VIS basic_string;
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using string = basic_string<char>;
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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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using wstring = basic_string<wchar_t>;
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#endif
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#ifndef _LIBCPP_HAS_NO_CHAR8_T
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using u8string = basic_string<char8_t>;
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#endif
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using u16string = basic_string<char16_t>;
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using u32string = basic_string<char32_t>;
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#if _LIBCPP_STD_VER >= 17
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namespace pmr {
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template <class _CharT, class _Traits = char_traits<_CharT>>
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using basic_string _LIBCPP_AVAILABILITY_PMR = std::basic_string<_CharT, _Traits, polymorphic_allocator<_CharT>>;
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using string _LIBCPP_AVAILABILITY_PMR = basic_string<char>;
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# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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using wstring _LIBCPP_AVAILABILITY_PMR = basic_string<wchar_t>;
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# endif
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# ifndef _LIBCPP_HAS_NO_CHAR8_T
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using u8string _LIBCPP_AVAILABILITY_PMR = basic_string<char8_t>;
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# endif
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using u16string _LIBCPP_AVAILABILITY_PMR = basic_string<char16_t>;
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using u32string _LIBCPP_AVAILABILITY_PMR = basic_string<char32_t>;
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} // namespace pmr
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#endif // _LIBCPP_STD_VER >= 17
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// clang-format off
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template <class _CharT, class _Traits, class _Allocator>
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class _LIBCPP_PREFERRED_NAME(string)
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#ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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_LIBCPP_PREFERRED_NAME(wstring)
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#endif
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#ifndef _LIBCPP_HAS_NO_CHAR8_T
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_LIBCPP_PREFERRED_NAME(u8string)
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#endif
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_LIBCPP_PREFERRED_NAME(u16string)
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_LIBCPP_PREFERRED_NAME(u32string)
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#if _LIBCPP_STD_VER >= 17
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_LIBCPP_PREFERRED_NAME(pmr::string)
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# ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
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_LIBCPP_PREFERRED_NAME(pmr::wstring)
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# endif
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# ifndef _LIBCPP_HAS_NO_CHAR8_T
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_LIBCPP_PREFERRED_NAME(pmr::u8string)
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# endif
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_LIBCPP_PREFERRED_NAME(pmr::u16string)
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_LIBCPP_PREFERRED_NAME(pmr::u32string)
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#endif
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basic_string;
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// clang-format on
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___FWD_STRING_H
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