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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.tcc')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.tcc | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.tcc b/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.tcc new file mode 100644 index 000000000..a0dc67e54 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.tcc @@ -0,0 +1,187 @@ +// basic_ios member functions -*- C++ -*- + +// Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, +// 2009 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 3, 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. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +/** @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_header + +_GLIBCXX_BEGIN_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->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; + } + + // 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_locale(__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(); + + // 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> + void + basic_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_TEMPLATE + extern template class basic_ios<char>; + +#ifdef _GLIBCXX_USE_WCHAR_T + extern template class basic_ios<wchar_t>; +#endif +#endif + +_GLIBCXX_END_NAMESPACE + +#endif |