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Whole document tree                   fpos.h Go to the documentation of this file. // File position object and stream types // Copyright (C) 1997, 1998, 1999, 2000, 2001 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, // 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. // // ISO C++ 14882: 27 Input/output library // #ifndef _CPP_BITS_FPOS_H #define _CPP_BITS_FPOS_H 1 #pragma GCC system_header #include <bits/c++io.h> #include <bits/std_cwchar.h> // For mbstate_t. namespace std { // 27.4.1 Types // 27.4.3 Template class fpos template<typename _StateT> class fpos { public: // Types: typedef _StateT __state_type; private: streamoff _M_off; __state_type _M_st; public: __state_type state() const { return _M_st; } void state(__state_type __st) { _M_st = __st; } // NB: The standard defines only the implicit copy ctor and the // previous two members. The rest is a "conforming extension". fpos(): _M_off(streamoff()), _M_st(__state_type()) { } fpos(streamoff __off, __state_type __st = __state_type()) : _M_off(__off), _M_st(__st) { } operator streamoff() const { return _M_off; } fpos& operator+=(streamoff __off) { _M_off += __off; return *this; } fpos& operator-=(streamoff __off) { _M_off -= __off; return *this; } fpos operator+(streamoff __off) { fpos __t(*this); __t += __off; return __t; } fpos operator-(streamoff __off) { fpos __t(*this); __t -= __off; return __t; } bool operator==(const fpos& __pos) const { return _M_off == __pos._M_off; } bool operator!=(const fpos& __pos) const { return _M_off != __pos._M_off; } streamoff _M_position() const { return _M_off; } void _M_position(streamoff __off) { _M_off = __off; } }; // 27.2, paragraph 10 about fpos/char_traits circularity typedef fpos<mbstate_t> streampos; # ifdef _GLIBCPP_USE_WCHAR_T typedef fpos<mbstate_t> wstreampos; # endif } // namespace std #endif