| // 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 |
| // |
| |
| /** @file fpos.h |
| * This is an internal header file, included by other library headers. |
| * You should not attempt to use it directly. |
| */ |
| |
| #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 |
| |
| |
| |