// Forwarding declarations -*- C++ -*- // Copyright (C) 1997, 1998, 1999, 2001, 2002, 2003, 2005 // Free Software Foundation, Inc. // // This file is part of the GNU ISO C++ Library. This library is free // software; you can redistribute it and/or modify it under the // terms of the GNU General Public License as published by the // Free Software Foundation; either version 2, or (at your option) // any later version. // This library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU General Public License for more details. // You should have received a copy of the GNU General Public License along // with this library; see the file COPYING. If not, write to the Free // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, // USA. // As a special exception, you may use this file as part of a free software // library without restriction. Specifically, if other files instantiate // templates or use macros or inline functions from this file, or you compile // this file and link it with other files to produce an executable, this // file does not by itself cause the resulting executable to be covered by // the GNU General Public License. This exception does not however // invalidate any other reasons why the executable file might be covered by // the GNU General Public License. /** @file iosfwd * This is a Standard C++ Library header. */ // // ISO C++ 14882: 27.2 Forward declarations // #ifndef _GLIBCXX_IOSFWD #define _GLIBCXX_IOSFWD 1 #pragma GCC system_header #include <bits/c++config.h> #include <bits/c++locale.h> #include <bits/c++io.h> #include <cctype> // For isspace, etc. #include <bits/stringfwd.h> // For string forward declarations. #include <bits/postypes.h> #include <bits/functexcept.h> _GLIBCXX_BEGIN_NAMESPACE(std) template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_ios; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_streambuf; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_istream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_ostream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_iostream; template<typename _CharT, typename _Traits = char_traits<_CharT>, typename _Alloc = allocator<_CharT> > class basic_stringbuf; template<typename _CharT, typename _Traits = char_traits<_CharT>, typename _Alloc = allocator<_CharT> > class basic_istringstream; template<typename _CharT, typename _Traits = char_traits<_CharT>, typename _Alloc = allocator<_CharT> > class basic_ostringstream; template<typename _CharT, typename _Traits = char_traits<_CharT>, typename _Alloc = allocator<_CharT> > class basic_stringstream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_filebuf; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_ifstream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_ofstream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class basic_fstream; template<typename _CharT, typename _Traits = char_traits<_CharT> > class istreambuf_iterator; template<typename _CharT, typename _Traits = char_traits<_CharT> > class ostreambuf_iterator; // _GLIBCXX_RESOLVE_LIB_DEFECTS // Not included. (??? Apparently no LWG number?) class ios_base; /** * @defgroup s27_2_iosfwd I/O Forward Declarations * * Nearly all of the I/O classes are parameterized on the type of * characters they read and write. (The major exception is ios_base at * the top of the hierarchy.) This is a change from pre-Standard * streams, which were not templates. * * For ease of use and compatibility, all of the basic_* I/O-related * classes are given typedef names for both of the builtin character * widths (wide and narrow). The typedefs are the same as the * pre-Standard names, for example: * * @code * typedef basic_ifstream<char> ifstream; * @endcode * * Because properly forward-declaring these classes can be difficult, you * should not do it yourself. Instead, include the <iosfwd> * header, which contains only declarations of all the I/O classes as * well as the typedefs. Trying to forward-declare the typedefs * themselves (e.g., "class ostream;") is not valid ISO C++. * * For more specific declarations, see * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#10 * * @{ */ typedef basic_ios<char> ios; ///< @isiosfwd typedef basic_streambuf<char> streambuf; ///< @isiosfwd typedef basic_istream<char> istream; ///< @isiosfwd typedef basic_ostream<char> ostream; ///< @isiosfwd typedef basic_iostream<char> iostream; ///< @isiosfwd typedef basic_stringbuf<char> stringbuf; ///< @isiosfwd typedef basic_istringstream<char> istringstream; ///< @isiosfwd typedef basic_ostringstream<char> ostringstream; ///< @isiosfwd typedef basic_stringstream<char> stringstream; ///< @isiosfwd typedef basic_filebuf<char> filebuf; ///< @isiosfwd typedef basic_ifstream<char> ifstream; ///< @isiosfwd typedef basic_ofstream<char> ofstream; ///< @isiosfwd typedef basic_fstream<char> fstream; ///< @isiosfwd #ifdef _GLIBCXX_USE_WCHAR_T typedef basic_ios<wchar_t> wios; ///< @isiosfwd typedef basic_streambuf<wchar_t> wstreambuf; ///< @isiosfwd typedef basic_istream<wchar_t> wistream; ///< @isiosfwd typedef basic_ostream<wchar_t> wostream; ///< @isiosfwd typedef basic_iostream<wchar_t> wiostream; ///< @isiosfwd typedef basic_stringbuf<wchar_t> wstringbuf; ///< @isiosfwd typedef basic_istringstream<wchar_t> wistringstream; ///< @isiosfwd typedef basic_ostringstream<wchar_t> wostringstream; ///< @isiosfwd typedef basic_stringstream<wchar_t> wstringstream; ///< @isiosfwd typedef basic_filebuf<wchar_t> wfilebuf; ///< @isiosfwd typedef basic_ifstream<wchar_t> wifstream; ///< @isiosfwd typedef basic_ofstream<wchar_t> wofstream; ///< @isiosfwd typedef basic_fstream<wchar_t> wfstream; ///< @isiosfwd #endif /** @} */ _GLIBCXX_END_NAMESPACE #endif /* _GLIBCXX_IOSFWD */