1139815Simp// basic_ios member functions -*- C++ -*- 21573Srgrimes 31573Srgrimes// Copyright (C) 1999, 2001, 2002, 2003, 2004, 2005 41573Srgrimes// Free Software Foundation, Inc. 51573Srgrimes// 61573Srgrimes// This file is part of the GNU ISO C++ Library. This library is free 71573Srgrimes// software; you can redistribute it and/or modify it under the 81573Srgrimes// terms of the GNU General Public License as published by the 91573Srgrimes// Free Software Foundation; either version 2, or (at your option) 101573Srgrimes// any later version. 111573Srgrimes 121573Srgrimes// This library is distributed in the hope that it will be useful, 131573Srgrimes// but WITHOUT ANY WARRANTY; without even the implied warranty of 141573Srgrimes// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 151573Srgrimes// GNU General Public License for more details. 161573Srgrimes 171573Srgrimes// You should have received a copy of the GNU General Public License along 181573Srgrimes// with this library; see the file COPYING. If not, write to the Free 191573Srgrimes// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 201573Srgrimes// USA. 211573Srgrimes 221573Srgrimes// As a special exception, you may use this file as part of a free software 231573Srgrimes// library without restriction. Specifically, if other files instantiate 241573Srgrimes// templates or use macros or inline functions from this file, or you compile 251573Srgrimes// this file and link it with other files to produce an executable, this 261573Srgrimes// file does not by itself cause the resulting executable to be covered by 271573Srgrimes// the GNU General Public License. This exception does not however 281573Srgrimes// invalidate any other reasons why the executable file might be covered by 291573Srgrimes// the GNU General Public License. 301573Srgrimes 311573Srgrimes/** @file basic_ios.tcc 321573Srgrimes * This is an internal header file, included by other library headers. 33116189Sobrien * You should not attempt to use it directly. 34116189Sobrien */ 35116189Sobrien 361573Srgrimes#ifndef _BASIC_IOS_TCC 371573Srgrimes#define _BASIC_IOS_TCC 1 381573Srgrimes 391573Srgrimes#pragma GCC system_header 401573Srgrimes 41104652Sdd_GLIBCXX_BEGIN_NAMESPACE(std) 42104652Sdd 43104652Sdd template<typename _CharT, typename _Traits> 441573Srgrimes void 451573Srgrimes basic_ios<_CharT, _Traits>::clear(iostate __state) 461573Srgrimes { 4726484Sache if (this->rdbuf()) 4826484Sache _M_streambuf_state = __state; 4926484Sache else 501573Srgrimes _M_streambuf_state = __state | badbit; 5190045Sobrien if (this->exceptions() & this->rdstate()) 5226484Sache __throw_ios_failure(__N("basic_ios::clear")); 531573Srgrimes } 54154660Srwatson 551573Srgrimes template<typename _CharT, typename _Traits> 561573Srgrimes basic_streambuf<_CharT, _Traits>* 5726484Sache basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<_CharT, _Traits>* __sb) 581573Srgrimes { 591573Srgrimes basic_streambuf<_CharT, _Traits>* __old = _M_streambuf; 601573Srgrimes _M_streambuf = __sb; 611573Srgrimes this->clear(); 621573Srgrimes return __old; 6319132Sache } 6419132Sache 651573Srgrimes template<typename _CharT, typename _Traits> 661573Srgrimes basic_ios<_CharT, _Traits>& 671573Srgrimes basic_ios<_CharT, _Traits>::copyfmt(const basic_ios& __rhs) 681573Srgrimes { 691573Srgrimes // _GLIBCXX_RESOLVE_LIB_DEFECTS 701573Srgrimes // 292. effects of a.copyfmt (a) 711573Srgrimes if (this != &__rhs) 721573Srgrimes { 731573Srgrimes // Per 27.1.1, do not call imbue, yet must trash all caches 741573Srgrimes // associated with imbue() 751573Srgrimes 761573Srgrimes // Alloc any new word array first, so if it fails we have "rollback". 771573Srgrimes _Words* __words = (__rhs._M_word_size <= _S_local_word_size) ? 781573Srgrimes _M_local_word : new _Words[__rhs._M_word_size]; 791573Srgrimes 801573Srgrimes // Bump refs before doing callbacks, for safety. 811573Srgrimes _Callback_list* __cb = __rhs._M_callbacks; 821573Srgrimes if (__cb) 831573Srgrimes __cb->_M_add_reference(); 841573Srgrimes _M_call_callbacks(erase_event); 851573Srgrimes if (_M_word != _M_local_word) 861573Srgrimes { 871573Srgrimes delete [] _M_word; 881573Srgrimes _M_word = 0; 891573Srgrimes } 901573Srgrimes _M_dispose_callbacks(); 9125269Sjdp 92229272Sed // NB: Don't want any added during above. 931573Srgrimes _M_callbacks = __cb; 941573Srgrimes for (int __i = 0; __i < __rhs._M_word_size; ++__i) 951573Srgrimes __words[__i] = __rhs._M_word[__i]; 961573Srgrimes _M_word = __words; 97229272Sed _M_word_size = __rhs._M_word_size; 981573Srgrimes 991573Srgrimes this->flags(__rhs.flags()); 1001573Srgrimes this->width(__rhs.width()); 1011573Srgrimes this->precision(__rhs.precision()); 1021573Srgrimes this->tie(__rhs.tie()); 1031573Srgrimes this->fill(__rhs.fill()); 1041573Srgrimes _M_ios_locale = __rhs.getloc(); 1051573Srgrimes _M_cache_locale(_M_ios_locale); 1061573Srgrimes 1071573Srgrimes _M_call_callbacks(copyfmt_event); 1081573Srgrimes 1091573Srgrimes // The next is required to be the last assignment. 1101573Srgrimes this->exceptions(__rhs.exceptions()); 1111573Srgrimes } 1121573Srgrimes return *this; 1131573Srgrimes } 11426486Sache 1151573Srgrimes template<typename _CharT, typename _Traits> 11626486Sache char 11726486Sache basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const 11826486Sache { return __check_facet(_M_ctype).narrow(__c, __dfault); } 11926486Sache 12026486Sache template<typename _CharT, typename _Traits> 12126484Sache _CharT 12226484Sache basic_ios<_CharT, _Traits>::widen(char __c) const 12326484Sache { return __check_facet(_M_ctype).widen(__c); } 12426484Sache 12526484Sache // Locales: 12626484Sache template<typename _CharT, typename _Traits> 12726484Sache locale 1281573Srgrimes basic_ios<_CharT, _Traits>::imbue(const locale& __loc) 12926484Sache { 1301573Srgrimes locale __old(this->getloc()); 1311573Srgrimes ios_base::imbue(__loc); 1321573Srgrimes _M_cache_locale(__loc); 1331573Srgrimes if (this->rdbuf() != 0) 1341573Srgrimes this->rdbuf()->pubimbue(__loc); 1351573Srgrimes return __old; 1361573Srgrimes } 1371573Srgrimes 1381573Srgrimes template<typename _CharT, typename _Traits> 1391573Srgrimes void 1401573Srgrimes basic_ios<_CharT, _Traits>::init(basic_streambuf<_CharT, _Traits>* __sb) 14126484Sache { 14219059Swosch // NB: This may be called more than once on the same object. 14319059Swosch ios_base::_M_init(); 14419132Sache 14519132Sache // Cache locale data and specific facets used by iostreams. 14619132Sache _M_cache_locale(_M_ios_locale); 14719059Swosch 14819059Swosch // NB: The 27.4.4.1 Postconditions Table specifies requirements 1491573Srgrimes // after basic_ios::init() has been called. As part of this, 15019059Swosch // fill() must return widen(' ') any time after init() has been 1511573Srgrimes // called, which needs an imbued ctype facet of char_type to 1521573Srgrimes // return without throwing an exception. Unfortunately, 1531573Srgrimes // ctype<char_type> is not necessarily a required facet, so 1541573Srgrimes // streams with char_type != [char, wchar_t] will not have it by 1551573Srgrimes // default. Because of this, the correct value for _M_fill is 15626484Sache // constructed on the first call of fill(). That way, 157154660Srwatson // unformatted input and output with non-required basic_ios 1581573Srgrimes // instantiations is possible even without imbuing the expected 15926492Sache // ctype<char_type> facet. 1601573Srgrimes _M_fill = _CharT(); 1611573Srgrimes _M_fill_init = false; 1621573Srgrimes 1631573Srgrimes _M_tie = 0; 1641573Srgrimes _M_exception = goodbit; 1651573Srgrimes _M_streambuf = __sb; 1661573Srgrimes _M_streambuf_state = __sb ? goodbit : badbit; 1671573Srgrimes } 1681573Srgrimes 16926486Sache template<typename _CharT, typename _Traits> 1701573Srgrimes void 1718870Srgrimes basic_ios<_CharT, _Traits>::_M_cache_locale(const locale& __loc) 17219132Sache { 17319132Sache if (__builtin_expect(has_facet<__ctype_type>(__loc), true)) 17419059Swosch _M_ctype = &use_facet<__ctype_type>(__loc); 17526484Sache else 17626484Sache _M_ctype = 0; 17726484Sache 17826484Sache if (__builtin_expect(has_facet<__num_put_type>(__loc), true)) 17926484Sache _M_num_put = &use_facet<__num_put_type>(__loc); 18026492Sache else 18126492Sache _M_num_put = 0; 18226492Sache 1831573Srgrimes if (__builtin_expect(has_facet<__num_get_type>(__loc), true)) 1841573Srgrimes _M_num_get = &use_facet<__num_get_type>(__loc); 1851573Srgrimes else 18626484Sache _M_num_get = 0; 18719059Swosch } 18826486Sache 18926486Sache // Inhibit implicit instantiations for required instantiations, 19026486Sache // which are defined via explicit instantiations elsewhere. 19119132Sache // NB: This syntax is a GNU extension. 19219132Sache#if _GLIBCXX_EXTERN_TEMPLATE 19319059Swosch extern template class basic_ios<char>; 1948870Srgrimes 1951573Srgrimes#ifdef _GLIBCXX_USE_WCHAR_T 1961573Srgrimes extern template class basic_ios<wchar_t>; 1971573Srgrimes#endif 1981573Srgrimes#endif 1991573Srgrimes 20026484Sache_GLIBCXX_END_NAMESPACE 20119059Swosch 20219132Sache#endif 20319132Sache