1 // Forwarding declarations -*- C++ -*-
3 // Copyright (C) 1997, 1998, 1999, 2001, 2002, 2003
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
32 // ISO C++ 14882: 27.2 Forward declarations
36 * This is a Standard C++ Library header. You should @c #include this header
37 * in your programs, rather than any of the "st[dl]_*.h" implementation files.
40 #ifndef _GLIBCXX_IOSFWD
41 #define _GLIBCXX_IOSFWD 1
43 #pragma GCC system_header
45 #include <bits/c++config.h>
46 #include <bits/c++locale.h>
47 #include <bits/c++io.h>
48 #include <cctype> // For isspace, etc.
49 #include <bits/stringfwd.h> // For string forward declarations.
50 #include <bits/postypes.h>
51 #include <bits/functexcept.h>
55 template<typename _CharT, typename _Traits = char_traits<_CharT> >
58 template<typename _CharT, typename _Traits = char_traits<_CharT> >
59 class basic_streambuf;
61 template<typename _CharT, typename _Traits = char_traits<_CharT> >
64 template<typename _CharT, typename _Traits = char_traits<_CharT> >
67 template<typename _CharT, typename _Traits = char_traits<_CharT> >
70 template<typename _CharT, typename _Traits = char_traits<_CharT>,
71 typename _Alloc = allocator<_CharT> >
72 class basic_stringbuf;
74 template<typename _CharT, typename _Traits = char_traits<_CharT>,
75 typename _Alloc = allocator<_CharT> >
76 class basic_istringstream;
78 template<typename _CharT, typename _Traits = char_traits<_CharT>,
79 typename _Alloc = allocator<_CharT> >
80 class basic_ostringstream;
82 template<typename _CharT, typename _Traits = char_traits<_CharT>,
83 typename _Alloc = allocator<_CharT> >
84 class basic_stringstream;
86 template<typename _CharT, typename _Traits = char_traits<_CharT> >
89 template<typename _CharT, typename _Traits = char_traits<_CharT> >
92 template<typename _CharT, typename _Traits = char_traits<_CharT> >
95 template<typename _CharT, typename _Traits = char_traits<_CharT> >
98 template<typename _CharT, typename _Traits = char_traits<_CharT> >
99 class istreambuf_iterator;
101 template<typename _CharT, typename _Traits = char_traits<_CharT> >
102 class ostreambuf_iterator;
104 // _GLIBCXX_RESOLVE_LIB_DEFECTS
105 // Not included. (??? Apparently no LWG number?)
109 * @defgroup s27_2_iosfwd I/O Forward Declarations
111 * Nearly all of the I/O classes are parameterized on the type of
112 * characters they read and write. (The major exception is ios_base at
113 * the top of the hierarchy.) This is a change from pre-Standard
114 * streams, which were not templates.
116 * For ease of use and compatibility, all of the basic_* I/O-related
117 * classes are given typedef names for both of the builtin character
118 * widths (wide and narrow). The typedefs are the same as the
119 * pre-Standard names, for example:
122 * typedef basic_ifstream<char> ifstream;
125 * Because properly forward-declaring these classes can be difficult, you
126 * should not do it yourself. Instead, include the <iosfwd>
127 * header, which contains only declarations of all the I/O classes as
128 * well as the typedefs. Trying to forward-declare the typedefs
129 * themselves (e.g., "class ostream;") is not valid ISO C++.
131 * For more specific declarations, see
132 * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#10
136 typedef basic_ios<char> ios; ///< @isiosfwd
137 typedef basic_streambuf<char> streambuf; ///< @isiosfwd
138 typedef basic_istream<char> istream; ///< @isiosfwd
139 typedef basic_ostream<char> ostream; ///< @isiosfwd
140 typedef basic_iostream<char> iostream; ///< @isiosfwd
141 typedef basic_stringbuf<char> stringbuf; ///< @isiosfwd
142 typedef basic_istringstream<char> istringstream; ///< @isiosfwd
143 typedef basic_ostringstream<char> ostringstream; ///< @isiosfwd
144 typedef basic_stringstream<char> stringstream; ///< @isiosfwd
145 typedef basic_filebuf<char> filebuf; ///< @isiosfwd
146 typedef basic_ifstream<char> ifstream; ///< @isiosfwd
147 typedef basic_ofstream<char> ofstream; ///< @isiosfwd
148 typedef basic_fstream<char> fstream; ///< @isiosfwd
150 #ifdef _GLIBCXX_USE_WCHAR_T
151 typedef basic_ios<wchar_t> wios; ///< @isiosfwd
152 typedef basic_streambuf<wchar_t> wstreambuf; ///< @isiosfwd
153 typedef basic_istream<wchar_t> wistream; ///< @isiosfwd
154 typedef basic_ostream<wchar_t> wostream; ///< @isiosfwd
155 typedef basic_iostream<wchar_t> wiostream; ///< @isiosfwd
156 typedef basic_stringbuf<wchar_t> wstringbuf; ///< @isiosfwd
157 typedef basic_istringstream<wchar_t> wistringstream; ///< @isiosfwd
158 typedef basic_ostringstream<wchar_t> wostringstream; ///< @isiosfwd
159 typedef basic_stringstream<wchar_t> wstringstream; ///< @isiosfwd
160 typedef basic_filebuf<wchar_t> wfilebuf; ///< @isiosfwd
161 typedef basic_ifstream<wchar_t> wifstream; ///< @isiosfwd
162 typedef basic_ofstream<wchar_t> wofstream; ///< @isiosfwd
163 typedef basic_fstream<wchar_t> wfstream; ///< @isiosfwd
168 #endif /* _GLIBCXX_IOSFWD */