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freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/libcxx/include/__fwd/string.h
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//===----------------------------------------------------------------------===//

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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 <__config>

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#include <__fwd/memory.h>

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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 _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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