1 // -*- C++ -*- 2 //===---------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===---------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___FWD_STRING_VIEW_H 11 #define _LIBCPP___FWD_STRING_VIEW_H 12 13 #include <__config> 14 #include <iosfwd> // char_traits 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 # pragma GCC system_header 18 #endif 19 20 _LIBCPP_BEGIN_NAMESPACE_STD 21 22 template<class _CharT, class _Traits = char_traits<_CharT> > 23 class _LIBCPP_TEMPLATE_VIS basic_string_view; 24 25 typedef basic_string_view<char> string_view; 26 #ifndef _LIBCPP_HAS_NO_CHAR8_T 27 typedef basic_string_view<char8_t> u8string_view; 28 #endif 29 typedef basic_string_view<char16_t> u16string_view; 30 typedef basic_string_view<char32_t> u32string_view; 31 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 32 typedef basic_string_view<wchar_t> wstring_view; 33 #endif 34 35 // clang-format off 36 template <class _CharT, class _Traits> 37 class _LIBCPP_PREFERRED_NAME(string_view) 38 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS 39 _LIBCPP_PREFERRED_NAME(wstring_view) 40 #endif 41 #ifndef _LIBCPP_HAS_NO_CHAR8_T 42 _LIBCPP_PREFERRED_NAME(u8string_view) 43 #endif 44 _LIBCPP_PREFERRED_NAME(u16string_view) 45 _LIBCPP_PREFERRED_NAME(u32string_view) 46 basic_string_view; 47 // clang-format on 48 _LIBCPP_END_NAMESPACE_STD 49 50 #endif // _LIBCPP___FWD_STRING_VIEW_H 51