-// basic_ios locale and locale-related member functions -*- C++ -*-
+// basic_ios member functions -*- C++ -*-
-// Copyright (C) 1999, 2001 Free Software Foundation, Inc.
+// Copyright (C) 1999-2020 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)
+// 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,
// 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.
+// 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.
-// 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.
+// 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/>.
-#ifndef _CPP_BITS_BASICIOS_TCC
-#define _CPP_BITS_BASICIOS_TCC 1
+/** @file bits/basic_ios.tcc
+ * This is an internal header file, included by other library headers.
+ * Do not attempt to use it directly. @headername{ios}
+ */
-namespace std {
+#ifndef _BASIC_IOS_TCC
+#define _BASIC_IOS_TCC 1
+
+#pragma GCC system_header
+
+namespace std _GLIBCXX_VISIBILITY(default)
+{
+_GLIBCXX_BEGIN_NAMESPACE_VERSION
+
+ 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_streambuf<_CharT, _Traits>*
basic_ios<_CharT, _Traits>::rdbuf(basic_streambuf<_CharT, _Traits>* __sb)
{
basic_streambuf<_CharT, _Traits>* __old = _M_streambuf;
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_limit <= _S_local_words) ?
- _M_word_array : new _Words[__rhs._M_word_limit];
-
- // XXX This is the only reason _Callback_list was defined
- // inline. The suspicion is that this increased compilation
- // times dramatically for functions that use this member
- // function (inserters_extractors, ios_manip_fmtflags). FIX ME,
- // clean this stuff up. Callbacks are broken right now, anyway.
-
- // 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_words != _M_word_array)
- delete [] _M_words;
- _M_dispose_callbacks();
-
- _M_callbacks = __cb; // NB: Don't want any added during above.
- for (int __i = 0; __i < __rhs._M_word_limit; ++__i)
- __words[__i] = __rhs._M_words[__i];
- if (_M_words != _M_word_array)
- delete [] _M_words;
- _M_words = __words;
- _M_word_limit = __rhs._M_word_limit;
-
- 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);
+ // _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>
- char
- basic_ios<_CharT, _Traits>::narrow(char_type __c, char __dfault) const
- { return _M_ios_fctype->narrow(__c, __dfault); }
-
- template<typename _CharT, typename _Traits>
- _CharT
- basic_ios<_CharT, _Traits>::widen(char __c) const
- { return _M_ios_fctype->widen(__c); }
-
// Locales:
template<typename _CharT, typename _Traits>
locale
{
locale __old(this->getloc());
ios_base::imbue(__loc);
- _M_ios_fctype = &use_facet<__ctype_type>(__loc);
- _M_fnumput = &use_facet<__numput_type>(__loc);
- _M_fnumget = &use_facet<__numget_type>(__loc);
+ _M_cache_locale(__loc);
if (this->rdbuf() != 0)
this->rdbuf()->pubimbue(__loc);
return __old;
{
// NB: This may be called more than once on the same object.
ios_base::_M_init();
- _M_ios_fctype = &use_facet<__ctype_type>(_M_ios_locale);
- // Should be filled in by ostream and istream, respectively.
- _M_fnumput = &use_facet<__numput_type>(_M_ios_locale);
- _M_fnumget = &use_facet<__numget_type>(_M_ios_locale);
+
+ // 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_fill = this->widen(' ');
_M_exception = goodbit;
_M_streambuf = __sb;
_M_streambuf_state = __sb ? goodbit : badbit;
}
-} // namespace std
+ 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 = std::__addressof(use_facet<__ctype_type>(__loc));
+ else
+ _M_ctype = 0;
+
+ if (__builtin_expect(has_facet<__num_put_type>(__loc), true))
+ _M_num_put = std::__addressof(use_facet<__num_put_type>(__loc));
+ else
+ _M_num_put = 0;
+
+ if (__builtin_expect(has_facet<__num_get_type>(__loc), true))
+ _M_num_get = std::__addressof(use_facet<__num_get_type>(__loc));
+ else
+ _M_num_get = 0;
+ }
-#endif // _CPP_BITS_BASICIOS_TCC
+ // Inhibit implicit instantiations for required instantiations,
+ // which are defined via explicit instantiations elsewhere.
+#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_VERSION
+} // namespace std
+#endif