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// Input streams -*- C++ -*-
// Copyright (C) 1997, 1998, 1999, 2001, 2002 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 istream
* This is a Standard C++ Library header. You should @c #include this header
* in your programs, rather than any of the "st[dl]_*.h" implementation files.
*/
#ifndef _CPP_ISTREAM
#define _CPP_ISTREAM 1
#pragma GCC system_header
#include <ios>
#include <limits> // 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);
};
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:
#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
// 271. basic_iostream missing typedefs
// Types (inherited):
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;
#endif
// 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
#endif
#ifdef _GLIBCPP_FULLY_COMPLIANT_HEADERS
# include <bits/istream.tcc>
#endif
#endif /* _CPP_ISTREAM */
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