| // Input streams -*- C++ -*- |
| |
| // Copyright (C) 1997-1999, 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: 27.6.1 Input streams |
| // |
| |
| /** @file std_istream.h |
| * This is an internal header file, included by other library headers. |
| * You should not attempt to use it directly. |
| */ |
| |
| #ifndef _CPP_ISTREAM |
| #define _CPP_ISTREAM 1 |
| |
| #pragma GCC system_header |
| |
| #include <bits/std_ios.h> |
| #include <bits/std_limits.h> // For numeric_limits |
| |
| namespace std |
| { |
| // 27.6.1.1 Template class basic_istream |
| template<typename _CharT, typename _Traits> |
| class basic_istream : virtual public basic_ios<_CharT, _Traits> |
| { |
| public: |
| // Types (inherited from basic_ios (27.4.4)): |
| typedef _CharT char_type; |
| typedef typename _Traits::int_type int_type; |
| typedef typename _Traits::pos_type pos_type; |
| typedef typename _Traits::off_type off_type; |
| typedef _Traits traits_type; |
| |
| // Non-standard Types: |
| typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
| typedef basic_ios<_CharT, _Traits> __ios_type; |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef istreambuf_iterator<_CharT, _Traits> __istreambuf_iter; |
| typedef num_get<_CharT, __istreambuf_iter> __numget_type; |
| typedef ctype<_CharT> __ctype_type; |
| |
| protected: |
| // Data Members: |
| streamsize _M_gcount; |
| |
| public: |
| // 27.6.1.1.1 Constructor/destructor: |
| explicit |
| basic_istream(__streambuf_type* __sb) |
| { |
| this->init(__sb); |
| _M_gcount = streamsize(0); |
| } |
| |
| virtual |
| ~basic_istream() |
| { _M_gcount = streamsize(0); } |
| |
| // 27.6.1.1.2 Prefix/suffix: |
| class sentry; |
| friend class sentry; |
| |
| // 27.6.1.2 Formatted input: |
| // 27.6.1.2.3 basic_istream::operator>> |
| __istream_type& |
| operator>>(__istream_type& (*__pf)(__istream_type&)); |
| |
| __istream_type& |
| operator>>(__ios_type& (*__pf)(__ios_type&)); |
| |
| __istream_type& |
| operator>>(ios_base& (*__pf)(ios_base&)); |
| |
| // 27.6.1.2.2 Arithmetic Extractors |
| __istream_type& |
| operator>>(bool& __n); |
| |
| __istream_type& |
| operator>>(short& __n); |
| |
| __istream_type& |
| operator>>(unsigned short& __n); |
| |
| __istream_type& |
| operator>>(int& __n); |
| |
| __istream_type& |
| operator>>(unsigned int& __n); |
| |
| __istream_type& |
| operator>>(long& __n); |
| |
| __istream_type& |
| operator>>(unsigned long& __n); |
| |
| #ifdef _GLIBCPP_USE_LONG_LONG |
| __istream_type& |
| operator>>(long long& __n); |
| |
| __istream_type& |
| operator>>(unsigned long long& __n); |
| #endif |
| |
| __istream_type& |
| operator>>(float& __f); |
| |
| __istream_type& |
| operator>>(double& __f); |
| |
| __istream_type& |
| operator>>(long double& __f); |
| |
| __istream_type& |
| operator>>(void*& __p); |
| |
| __istream_type& |
| operator>>(__streambuf_type* __sb); |
| |
| // 27.6.1.3 Unformatted input: |
| inline streamsize |
| gcount(void) const |
| { return _M_gcount; } |
| |
| int_type |
| get(void); |
| |
| __istream_type& |
| get(char_type& __c); |
| |
| __istream_type& |
| get(char_type* __s, streamsize __n, char_type __delim); |
| |
| inline __istream_type& |
| get(char_type* __s, streamsize __n) |
| { return this->get(__s, __n, this->widen('\n')); } |
| |
| __istream_type& |
| get(__streambuf_type& __sb, char_type __delim); |
| |
| inline __istream_type& |
| get(__streambuf_type& __sb) |
| { return this->get(__sb, this->widen('\n')); } |
| |
| __istream_type& |
| getline(char_type* __s, streamsize __n, char_type __delim); |
| |
| inline __istream_type& |
| getline(char_type* __s, streamsize __n) |
| { return this->getline(__s, __n, this->widen('\n')); } |
| |
| __istream_type& |
| ignore(streamsize __n = 1, int_type __delim = traits_type::eof()); |
| |
| int_type |
| peek(void); |
| |
| __istream_type& |
| read(char_type* __s, streamsize __n); |
| |
| streamsize |
| readsome(char_type* __s, streamsize __n); |
| |
| __istream_type& |
| putback(char_type __c); |
| |
| __istream_type& |
| unget(void); |
| |
| int |
| sync(void); |
| |
| pos_type |
| tellg(void); |
| |
| __istream_type& |
| seekg(pos_type); |
| |
| __istream_type& |
| seekg(off_type, ios_base::seekdir); |
| |
| private: |
| #ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS |
| // Not defined. (Side effect of DR 50.) |
| __istream_type& |
| operator=(const __istream_type&); |
| |
| basic_istream(const __istream_type&); |
| #endif |
| }; |
| |
| template<typename _CharT, typename _Traits> |
| class basic_istream<_CharT, _Traits>::sentry |
| { |
| public: |
| typedef _Traits traits_type; |
| typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef typename __istream_type::__ctype_type __ctype_type; |
| typedef typename _Traits::int_type __int_type; |
| |
| explicit |
| sentry(basic_istream<_CharT, _Traits>& __is, bool __noskipws = false); |
| |
| operator bool() { return _M_ok; } |
| |
| private: |
| bool _M_ok; |
| }; |
| |
| // 27.6.1.2.3 Character extraction templates |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c); |
| |
| template<class _Traits> |
| basic_istream<char, _Traits>& |
| operator>>(basic_istream<char, _Traits>& __in, unsigned char& __c) |
| { return (__in >> reinterpret_cast<char&>(__c)); } |
| |
| template<class _Traits> |
| basic_istream<char, _Traits>& |
| operator>>(basic_istream<char, _Traits>& __in, signed char& __c) |
| { return (__in >> reinterpret_cast<char&>(__c)); } |
| |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s); |
| |
| template<class _Traits> |
| basic_istream<char,_Traits>& |
| operator>>(basic_istream<char,_Traits>& __in, unsigned char* __s) |
| { return (__in >> reinterpret_cast<char*>(__s)); } |
| |
| template<class _Traits> |
| basic_istream<char,_Traits>& |
| operator>>(basic_istream<char,_Traits>& __in, signed char* __s) |
| { return (__in >> reinterpret_cast<char*>(__s)); } |
| |
| // 27.6.1.5 Template class basic_iostream |
| template<typename _CharT, typename _Traits> |
| class basic_iostream |
| : public basic_istream<_CharT, _Traits>, |
| public basic_ostream<_CharT, _Traits> |
| { |
| public: |
| // Non-standard Types: |
| typedef basic_istream<_CharT, _Traits> __istream_type; |
| typedef basic_ostream<_CharT, _Traits> __ostream_type; |
| |
| explicit |
| basic_iostream(basic_streambuf<_CharT, _Traits>* __sb) |
| : __istream_type(__sb), __ostream_type(__sb) |
| { } |
| |
| virtual |
| ~basic_iostream() { } |
| }; |
| |
| // 27.6.1.4 Standard basic_istream manipulators |
| template<typename _CharT, typename _Traits> |
| basic_istream<_CharT, _Traits>& |
| ws(basic_istream<_CharT, _Traits>& __is); |
| } // namespace std |
| |
| #ifdef _GLIBCPP_NO_TEMPLATE_EXPORT |
| # define export |
| #ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS |
| # include <bits/istream.tcc> |
| #endif |
| #endif |
| |
| #endif /* _CPP_ISTREAM */ |
