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- // basic_ios locale and locale-related member functions -*- C++ -*-
-
- // Copyright (C) 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.
-
- #ifndef _CPP_BITS_BASICIOS_TCC
- #define _CPP_BITS_BASICIOS_TCC 1
-
- #pragma GCC system_header
-
- namespace std
- {
- template<typename _CharT, typename _Traits>
- void
- basic_ios<_CharT, _Traits>::clear(iostate __state)
- {
- if (this->rdbuf())
- _M_streambuf_state = __state;
- else
- _M_streambuf_state = __state | badbit;
- if ((this->rdstate() & this->exceptions()))
- __throw_ios_failure("basic_ios::clear(iostate) caused exception");
- }
-
- template<typename _CharT, typename _Traits>
- 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<typename _CharT, typename _Traits>
- 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_size <= _S_local_word_size) ?
- _M_local_word : new _Words[__rhs._M_word_size];
-
- // 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_word != _M_local_word)
- {
- delete [] _M_word;
- _M_word = 0;
- }
- _M_dispose_callbacks();
-
- _M_callbacks = __cb; // NB: Don't want any added during above.
- for (int __i = 0; __i < __rhs._M_word_size; ++__i)
- __words[__i] = __rhs._M_word[__i];
- if (_M_word != _M_local_word)
- {
- delete [] _M_word;
- _M_word = 0;
- }
- _M_word = __words;
- _M_word_size = __rhs._M_word_size;
-
- 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<typename _CharT, typename _Traits>
- char
- basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
- {
- char __ret = __dfault;
- if (_M_check_facet(_M_fctype))
- __ret = _M_fctype->narrow(__c, __dfault);
- return __ret;
- }
-
- template<typename _CharT, typename _Traits>
- _CharT
- basic_ios<_CharT, _Traits>::widen(char __c) const
- {
- char_type __ret = char_type();
- if (_M_check_facet(_M_fctype))
- __ret = _M_fctype->widen(__c);
- return __ret;
- }
-
- // Locales:
- template<typename _CharT, typename _Traits>
- 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<typename _CharT, typename _Traits>
- 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;
-
- // NB: The 27.4.4.1 Postconditions Table specifies requirements
- // after basic_ios::init() has been called. As part of this,
- // fill() must return widen(' ') any time after init() has been
- // called, which needs an imbued ctype facet of char_type to
- // return without throwing an exception. Unfortunately,
- // ctype<char_type> is not necessarily a required facet, so
- // streams with char_type != [char, wchar_t] will not have it by
- // default. Because of this, the correct value for _M_fill is
- // constructed on the first call of fill(). That way,
- // unformatted input and output with non-required basic_ios
- // instantiations is possible even without imbuing the expected
- // ctype<char_type> facet.
- _M_fill = _CharT();
- _M_fill_init = false;
-
- _M_exception = goodbit;
- _M_streambuf = __sb;
- _M_streambuf_state = __sb ? goodbit : badbit;
- }
-
- template<typename _CharT, typename _Traits>
- void
- basic_ios<_CharT, _Traits>::_M_cache_facets(const locale& __loc)
- {
- if (has_facet<__ctype_type>(__loc))
- _M_fctype = &use_facet<__ctype_type>(__loc);
- else
- _M_fctype = 0;
- // Should be filled in by ostream and istream, respectively.
- if (has_facet<__numput_type>(__loc))
- _M_fnumput = &use_facet<__numput_type>(__loc);
- else
- _M_fnumput = 0;
- if (has_facet<__numget_type>(__loc))
- _M_fnumget = &use_facet<__numget_type>(__loc);
- else
- _M_fnumget = 0;
- }
-
- // Inhibit implicit instantiations for required instantiations,
- // which are defined via explicit instantiations elsewhere.
- // NB: This syntax is a GNU extension.
- extern template class basic_ios<char>;
- extern template class basic_ios<wchar_t>;
- } // namespace std
-
- #endif
-