ostream.tcc

gcc-you can use this code to learn something about gcc, and inquire further into linux,

// ostream classes -*- C++ -*-

// Copyright (C) 1997, 1998, 1999, 2000, 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: 27.6.2  Output streams
//

#pragma GCC system_header

#include <locale>

namespace std 
{
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>::sentry::
    sentry(basic_ostream<_CharT,_Traits>& __os)
    : _M_os(__os)
    {
      // XXX MT
      if (__os.tie() && __os.good())
	__os.tie()->flush();

      if (__os.good())
	_M_ok = true;
      else
	{
	  _M_ok = false;
	  __os.setstate(ios_base::failbit);
	}
    }
  
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::
    operator<<(__ostream_type& (*__pf)(__ostream_type&))
    {
      sentry __cerb(*this);
      if (__cerb)
	{ 
	  try 
	    { __pf(*this); }
	  catch(...)
	    {
	      // 27.6.2.5.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }
  
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::
    operator<<(__ios_type& (*__pf)(__ios_type&))
    {
      sentry __cerb(*this);
      if (__cerb)
	{ 
	  try 
	    { __pf(*this); }
	  catch(...)
	    {
	      // 27.6.2.5.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::
    operator<<(ios_base& (*__pf)(ios_base&))
    {
      sentry __cerb(*this);
      if (__cerb)
	{ 
	  try 
	    { __pf(*this); }
	  catch(...)
	    {
	      // 27.6.2.5.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(__streambuf_type* __sbin)
    {
      sentry __cerb(*this);
      if (__cerb && __sbin)
	{
	  try
	    {
	      if (!__copy_streambufs(*this, __sbin, this->rdbuf()))
		this->setstate(ios_base::failbit);
	    }
	  catch(...)
	    {
	      // 27.6.2.5.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      else if (!__sbin)
	this->setstate(ios_base::badbit);
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(bool __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))
		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
		  this->setstate(ios_base::badbit);
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(long __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      char_type __c = this->fill();
	      ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
	      if (_M_check_facet(_M_fnumput))
		{
		  bool __b = false;
		  if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
		    {
		      unsigned long __l = static_cast<unsigned long>(__n);
		      __b = _M_fnumput->put(*this, *this, __c, __l).failed();
		    }
		  else
		    __b = _M_fnumput->put(*this, *this, __c, __n).failed();
		  if (__b)  
		    this->setstate(ios_base::badbit);
		}
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(unsigned long __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))
		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
		  this->setstate(ios_base::badbit);
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

#ifdef _GLIBCPP_USE_LONG_LONG
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(long long __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      char_type __c = this->fill();
	      ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
	      if (_M_check_facet(_M_fnumput))
		{
		  bool __b = false;
		  if ((__fmt & ios_base::oct) || (__fmt & ios_base::hex))
		    {
		      unsigned long long __l;
		      __l = static_cast<unsigned long long>(__n);
		      __b = _M_fnumput->put(*this, *this, __c, __l).failed();
		    }
		  else
		    __b = _M_fnumput->put(*this, *this, __c, __n).failed();
		  if (__b)  
		    this->setstate(ios_base::badbit);
		}
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(unsigned long long __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))
		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
		  this->setstate(ios_base::badbit);
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }
#endif
  
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(double __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))
		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
		  this->setstate(ios_base::badbit);
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }
  
  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(long double __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))
		if (_M_fnumput->put(*this, *this, this->fill(), __n).failed())
		  this->setstate(ios_base::badbit);
	    }
	  catch(...)
	    {
	      // 27.6.1.2.1 Common requirements.
	      // Turn this on without causing an ios::failure to be thrown.
	      this->_M_setstate(ios_base::badbit);
	      if ((this->exceptions() & ios_base::badbit) != 0)
		__throw_exception_again;
	    }
	}
      return *this;
    }

  template<typename _CharT, typename _Traits>
    basic_ostream<_CharT, _Traits>& 
    basic_ostream<_CharT, _Traits>::operator<<(const void* __n)
    {
      sentry __cerb(*this);
      if (__cerb) 
	{
	  try 
	    {
	      if (_M_check_facet(_M_fnumput))