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Diffstat (limited to 'contrib/libstdc++/include/bits/basic_ios.tcc')
| -rw-r--r-- | contrib/libstdc++/include/bits/basic_ios.tcc | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/contrib/libstdc++/include/bits/basic_ios.tcc b/contrib/libstdc++/include/bits/basic_ios.tcc new file mode 100644 index 0000000..1e345dc --- /dev/null +++ b/contrib/libstdc++/include/bits/basic_ios.tcc @@ -0,0 +1,193 @@ +// 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 = 0; + _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 |
