1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #ifndef _LIBCPP___FWD_ISTREAM_H
10 #define _LIBCPP___FWD_ISTREAM_H
11 
12 #include <__config>
13 #include <__fwd/string.h>
14 
15 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
16 #  pragma GCC system_header
17 #endif
18 
19 _LIBCPP_BEGIN_NAMESPACE_STD
20 
21 template <class _CharT, class _Traits = char_traits<_CharT> >
22 class _LIBCPP_TEMPLATE_VIS basic_istream;
23 
24 template <class _CharT, class _Traits = char_traits<_CharT> >
25 class _LIBCPP_TEMPLATE_VIS basic_iostream;
26 
27 using istream  = basic_istream<char>;
28 using iostream = basic_iostream<char>;
29 
30 #ifndef _LIBCPP_HAS_NO_WIDE_CHARACTERS
31 using wistream  = basic_istream<wchar_t>;
32 using wiostream = basic_iostream<wchar_t>;
33 #endif
34 
35 template <class _CharT, class _Traits>
36 class _LIBCPP_PREFERRED_NAME(istream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wistream)) basic_istream;
37 
38 template <class _CharT, class _Traits>
39 class _LIBCPP_PREFERRED_NAME(iostream) _LIBCPP_IF_WIDE_CHARACTERS(_LIBCPP_PREFERRED_NAME(wiostream)) basic_iostream;
40 
41 _LIBCPP_END_NAMESPACE_STD
42 
43 #endif // _LIBCPP___FWD_ISTREAM_H
44