// basic_ios member functions -*- C++ -*-// Copyright (C) 1999, 2001, 2002, 2003, 2004 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,// 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./** @file basic_ios.tcc* This is an internal header file, included by other library headers.* You should not attempt to use it directly.*/#ifndef _BASIC_IOS_TCC#define _BASIC_IOS_TCC 1#pragma GCC system_headernamespace std{template<typename _CharT, typename _Traits>voidbasic_ios<_CharT, _Traits>::clear(iostate __state){if (this->rdbuf())_M_streambuf_state = __state;else_M_streambuf_state = __state | badbit;if (this->exceptions() & this->rdstate())__throw_ios_failure(__N("basic_ios::clear"));}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){// _GLIBCXX_RESOLVE_LIB_DEFECTS// 292. effects of a.copyfmt (a)if (this != &__rhs){// Per 27.1.1, 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();// NB: Don't want any added during above._M_callbacks = __cb;for (int __i = 0; __i < __rhs._M_word_size; ++__i)__words[__i] = __rhs._M_word[__i];_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());_M_ios_locale = __rhs.getloc();_M_cache_locale(_M_ios_locale);_M_call_callbacks(copyfmt_event);// The next is required to be the last assignment.this->exceptions(__rhs.exceptions());}return *this;}template<typename _CharT, typename _Traits>charbasic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const{ return __check_facet(_M_ctype).narrow(__c, __dfault); }template<typename _CharT, typename _Traits>_CharTbasic_ios<_CharT, _Traits>::widen(char __c) const{ return __check_facet(_M_ctype).widen(__c); }// Locales:template<typename _CharT, typename _Traits>localebasic_ios<_CharT, _Traits>::imbue(const locale& __loc){locale __old(this->getloc());ios_base::imbue(__loc);_M_cache_locale(__loc);if (this->rdbuf() != 0)this->rdbuf()->pubimbue(__loc);return __old;}template<typename _CharT, typename _Traits>voidbasic_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();// Cache locale data and specific facets used by iostreams._M_cache_locale(_M_ios_locale);// 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_tie = 0;_M_exception = goodbit;_M_streambuf = __sb;_M_streambuf_state = __sb ? goodbit : badbit;}template<typename _CharT, typename _Traits>voidbasic_ios<_CharT, _Traits>::_M_cache_locale(const locale& __loc){if (__builtin_expect(has_facet<__ctype_type>(__loc), true))_M_ctype = &use_facet<__ctype_type>(__loc);else_M_ctype = 0;if (__builtin_expect(has_facet<__num_put_type>(__loc), true))_M_num_put = &use_facet<__num_put_type>(__loc);else_M_num_put = 0;if (__builtin_expect(has_facet<__num_get_type>(__loc), true))_M_num_get = &use_facet<__num_get_type>(__loc);else_M_num_get = 0;}// Inhibit implicit instantiations for required instantiations,// which are defined via explicit instantiations elsewhere.// NB: This syntax is a GNU extension.#if _GLIBCXX_EXTERN_TEMPLATEextern template class basic_ios<char>;#ifdef _GLIBCXX_USE_WCHAR_Textern template class basic_ios<wchar_t>;#endif#endif} // namespace std#endif