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// basic_ios locale and locale-related member functions -*- C++ -*-

// Copyright (C) 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.

#ifndef _CPP_BITS_BASICIOS_TCC

#define _CPP_BITS_BASICIOS_TCC 1

namespace std

{

  template

    basic_streambuf<_CharT, _Traits>*

    basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<_CharT, _Traits>* __sb)

    {

      basic_streambuf<_CharT, _Traits>* __old = _M_streambuf;

      _M_streambuf = __sb;

      this->clear();

      return __old;

    }

  template

    basic_ios<_CharT, _Traits>&

    basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs)

    {

      // Per 27.1.1.1, do not call imbue, yet must trash all caches

      // associated with imbue()

      // Alloc any new word array first, so if it fails we have "rollback".

      _Words* __words = (__rhs._M_word_limit <= _S_local_words) ?

	_M_word_array : new _Words[__rhs._M_word_limit];

      // XXX This is the only reason _Callback_list was defined

      // inline. The suspicion is that this increased compilation

      // times dramatically for functions that use this member

      // function (inserters_extractors, ios_manip_fmtflags). FIX ME,

      // clean this stuff up. Callbacks are broken right now, anyway.

      // Bump refs before doing callbacks, for safety.

      _Callback_list* __cb = __rhs._M_callbacks;

      if (__cb)

	__cb->_M_add_reference();

      _M_call_callbacks(erase_event);

      if (_M_words != _M_word_array)

	delete [] _M_words;

      _M_dispose_callbacks();

      _M_callbacks = __cb;  // NB: Don't want any added during above.

      for (int __i = 0; __i < __rhs._M_word_limit; ++__i)

	__words[__i] = __rhs._M_words[__i];

      if (_M_words != _M_word_array)

	delete [] _M_words;

      _M_words = __words;

      _M_word_limit = __rhs._M_word_limit;

      this->flags(__rhs.flags());

      this->width(__rhs.width());

      this->precision(__rhs.precision());

      this->tie(__rhs.tie());

      this->fill(__rhs.fill());

      // The next is required to be the last assignment.

      this->exceptions(__rhs.exceptions());

      _M_call_callbacks(copyfmt_event);

      return *this;

    }

  template

    char

    basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const

    { return _M_ios_fctype->narrow(__c, __dfault); }

  template

    _CharT

    basic_ios<_CharT, _Traits>::widen(char __c) const

    { return _M_ios_fctype->widen(__c); }

  // Locales:

  template

    locale

    basic_ios<_CharT, _Traits>::imbue(const locale& __loc)

    {

      locale __old(this->getloc());

      ios_base::imbue(__loc);

      _M_cache_facets(__loc);

      if (this->rdbuf() != 0)

	this->rdbuf()->pubimbue(__loc);

      return __old;

    }

  template

    void

    basic_ios<_CharT, _Traits>::init(basic_streambuf<_CharT, _Traits>* __sb)

    {

      // NB: This may be called more than once on the same object.

      ios_base::_M_init();

      _M_cache_facets(_M_ios_locale);

      _M_tie = 0;

      _M_fill = this->widen(' ');

      _M_exception = goodbit;

      _M_streambuf = __sb;

      _M_streambuf_state = __sb ? goodbit : badbit;

    }

  template

    void

    basic_ios<_CharT, _Traits>::_M_cache_facets(const locale& __loc)

    {

      if (has_facet<__ctype_type>(__loc))

	_M_ios_fctype = &use_facet<__ctype_type>(__loc);

      // Should be filled in by ostream and istream, respectively.

      if (has_facet<__numput_type>(__loc))

	_M_fnumput = &use_facet<__numput_type>(__loc);

      if (has_facet<__numget_type>(__loc))

	_M_fnumget = &use_facet<__numget_type>(__loc);

    }

} // namespace std

#endif // _CPP_BITS_BASICIOS_TCC