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// 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

//

#ifndef _CPP_ISTREAM

#define _CPP_ISTREAM	1

#pragma GCC system_header

#include 

#include  // For numeric_limits

namespace std

{

  // 27.6.1.1 Template class basic_istream

  template

    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 get(__s, __n, this->widen('\n')); }

      __istream_type&

      get(__streambuf_type& __sb, char_type __delim);

      inline __istream_type&

      get(__streambuf_type& __sb)

      { return 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 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.

      __istream_type&

      operator=(const __istream_type&);

      basic_istream(const __istream_type&);

#endif

    };

  template

    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 __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

    basic_istream<_CharT, _Traits>&

    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c);

  template

    basic_istream&

    operator>>(basic_istream& __in, unsigned char& __c)

    { return (__in >> reinterpret_cast(__c)); }

  template

    basic_istream&

    operator>>(basic_istream& __in, signed char& __c)

    { return (__in >> reinterpret_cast(__c)); }

  template

    basic_istream<_CharT, _Traits>&

    operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s);

  template

    basic_istream&

    operator>>(basic_istream& __in, unsigned char* __s)

    { return (__in >> reinterpret_cast(__s)); }

  template

    basic_istream&

    operator>>(basic_istream& __in, signed char* __s)

    { return (__in >> reinterpret_cast(__s)); }

  // 27.6.1.5 Template class basic_iostream

  template

    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

    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 

#endif

#endif

#endif	/* _CPP_ISTREAM */