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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.h')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.h | 474 |
1 files changed, 0 insertions, 474 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.h b/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.h deleted file mode 100644 index ee1b64650..000000000 --- a/gcc-4.4.3/libstdc++-v3/include/bits/basic_ios.h +++ /dev/null @@ -1,474 +0,0 @@ -// Iostreams base classes -*- C++ -*- - -// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, -// 2006, 2007, 2008, 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.h - * This is an internal header file, included by other library headers. - * You should not attempt to use it directly. - */ - -#ifndef _BASIC_IOS_H -#define _BASIC_IOS_H 1 - -#pragma GCC system_header - -#include <bits/localefwd.h> -#include <bits/locale_classes.h> -#include <bits/locale_facets.h> -#include <bits/streambuf_iterator.h> - -_GLIBCXX_BEGIN_NAMESPACE(std) - - template<typename _Facet> - inline const _Facet& - __check_facet(const _Facet* __f) - { - if (!__f) - __throw_bad_cast(); - return *__f; - } - - // 27.4.5 Template class basic_ios - /** - * @brief Virtual base class for all stream classes. - * @ingroup io - * - * Most of the member functions called dispatched on stream objects - * (e.g., @c std::cout.foo(bar);) are consolidated in this class. - */ - template<typename _CharT, typename _Traits> - class basic_ios : public ios_base - { - public: - //@{ - /** - * These are standard types. They permit a standardized way of - * referring to names of (or names dependant on) the template - * parameters, which are specific to the implementation. - */ - typedef _CharT char_type; - typedef typename _Traits::int_type int_type; - typedef typename _Traits::pos_type pos_type; - typedef typename _Traits::off_type off_type; - typedef _Traits traits_type; - //@} - - //@{ - /** - * These are non-standard types. - */ - typedef ctype<_CharT> __ctype_type; - typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> > - __num_put_type; - typedef num_get<_CharT, istreambuf_iterator<_CharT, _Traits> > - __num_get_type; - //@} - - // Data members: - protected: - basic_ostream<_CharT, _Traits>* _M_tie; - mutable char_type _M_fill; - mutable bool _M_fill_init; - basic_streambuf<_CharT, _Traits>* _M_streambuf; - - // Cached use_facet<ctype>, which is based on the current locale info. - const __ctype_type* _M_ctype; - // For ostream. - const __num_put_type* _M_num_put; - // For istream. - const __num_get_type* _M_num_get; - - public: - //@{ - /** - * @brief The quick-and-easy status check. - * - * This allows you to write constructs such as - * "if (!a_stream) ..." and "while (a_stream) ..." - */ - operator void*() const - { return this->fail() ? 0 : const_cast<basic_ios*>(this); } - - bool - operator!() const - { return this->fail(); } - //@} - - /** - * @brief Returns the error state of the stream buffer. - * @return A bit pattern (well, isn't everything?) - * - * See std::ios_base::iostate for the possible bit values. Most - * users will call one of the interpreting wrappers, e.g., good(). - */ - iostate - rdstate() const - { return _M_streambuf_state; } - - /** - * @brief [Re]sets the error state. - * @param state The new state flag(s) to set. - * - * See std::ios_base::iostate for the possible bit values. Most - * users will not need to pass an argument. - */ - void - clear(iostate __state = goodbit); - - /** - * @brief Sets additional flags in the error state. - * @param state The additional state flag(s) to set. - * - * See std::ios_base::iostate for the possible bit values. - */ - void - setstate(iostate __state) - { this->clear(this->rdstate() | __state); } - - // Flip the internal state on for the proper state bits, then re - // throws the propagated exception if bit also set in - // exceptions(). - void - _M_setstate(iostate __state) - { - // 27.6.1.2.1 Common requirements. - // Turn this on without causing an ios::failure to be thrown. - _M_streambuf_state |= __state; - if (this->exceptions() & __state) - __throw_exception_again; - } - - /** - * @brief Fast error checking. - * @return True if no error flags are set. - * - * A wrapper around rdstate. - */ - bool - good() const - { return this->rdstate() == 0; } - - /** - * @brief Fast error checking. - * @return True if the eofbit is set. - * - * Note that other iostate flags may also be set. - */ - bool - eof() const - { return (this->rdstate() & eofbit) != 0; } - - /** - * @brief Fast error checking. - * @return True if either the badbit or the failbit is set. - * - * Checking the badbit in fail() is historical practice. - * Note that other iostate flags may also be set. - */ - bool - fail() const - { return (this->rdstate() & (badbit | failbit)) != 0; } - - /** - * @brief Fast error checking. - * @return True if the badbit is set. - * - * Note that other iostate flags may also be set. - */ - bool - bad() const - { return (this->rdstate() & badbit) != 0; } - - /** - * @brief Throwing exceptions on errors. - * @return The current exceptions mask. - * - * This changes nothing in the stream. See the one-argument version - * of exceptions(iostate) for the meaning of the return value. - */ - iostate - exceptions() const - { return _M_exception; } - - /** - * @brief Throwing exceptions on errors. - * @param except The new exceptions mask. - * - * By default, error flags are set silently. You can set an - * exceptions mask for each stream; if a bit in the mask becomes set - * in the error flags, then an exception of type - * std::ios_base::failure is thrown. - * - * If the error flag is already set when the exceptions mask is - * added, the exception is immediately thrown. Try running the - * following under GCC 3.1 or later: - * @code - * #include <iostream> - * #include <fstream> - * #include <exception> - * - * int main() - * { - * std::set_terminate (__gnu_cxx::__verbose_terminate_handler); - * - * std::ifstream f ("/etc/motd"); - * - * std::cerr << "Setting badbit\n"; - * f.setstate (std::ios_base::badbit); - * - * std::cerr << "Setting exception mask\n"; - * f.exceptions (std::ios_base::badbit); - * } - * @endcode - */ - void - exceptions(iostate __except) - { - _M_exception = __except; - this->clear(_M_streambuf_state); - } - - // Constructor/destructor: - /** - * @brief Constructor performs initialization. - * - * The parameter is passed by derived streams. - */ - explicit - basic_ios(basic_streambuf<_CharT, _Traits>* __sb) - : ios_base(), _M_tie(0), _M_fill(), _M_fill_init(false), _M_streambuf(0), - _M_ctype(0), _M_num_put(0), _M_num_get(0) - { this->init(__sb); } - - /** - * @brief Empty. - * - * The destructor does nothing. More specifically, it does not - * destroy the streambuf held by rdbuf(). - */ - virtual - ~basic_ios() { } - - // Members: - /** - * @brief Fetches the current @e tied stream. - * @return A pointer to the tied stream, or NULL if the stream is - * not tied. - * - * A stream may be @e tied (or synchronized) to a second output - * stream. When this stream performs any I/O, the tied stream is - * first flushed. For example, @c std::cin is tied to @c std::cout. - */ - basic_ostream<_CharT, _Traits>* - tie() const - { return _M_tie; } - - /** - * @brief Ties this stream to an output stream. - * @param tiestr The output stream. - * @return The previously tied output stream, or NULL if the stream - * was not tied. - * - * This sets up a new tie; see tie() for more. - */ - basic_ostream<_CharT, _Traits>* - tie(basic_ostream<_CharT, _Traits>* __tiestr) - { - basic_ostream<_CharT, _Traits>* __old = _M_tie; - _M_tie = __tiestr; - return __old; - } - - /** - * @brief Accessing the underlying buffer. - * @return The current stream buffer. - * - * This does not change the state of the stream. - */ - basic_streambuf<_CharT, _Traits>* - rdbuf() const - { return _M_streambuf; } - - /** - * @brief Changing the underlying buffer. - * @param sb The new stream buffer. - * @return The previous stream buffer. - * - * Associates a new buffer with the current stream, and clears the - * error state. - * - * Due to historical accidents which the LWG refuses to correct, the - * I/O library suffers from a design error: this function is hidden - * in derived classes by overrides of the zero-argument @c rdbuf(), - * which is non-virtual for hysterical raisins. As a result, you - * must use explicit qualifications to access this function via any - * derived class. For example: - * - * @code - * std::fstream foo; // or some other derived type - * std::streambuf* p = .....; - * - * foo.ios::rdbuf(p); // ios == basic_ios<char> - * @endcode - */ - basic_streambuf<_CharT, _Traits>* - rdbuf(basic_streambuf<_CharT, _Traits>* __sb); - - /** - * @brief Copies fields of __rhs into this. - * @param __rhs The source values for the copies. - * @return Reference to this object. - * - * All fields of __rhs are copied into this object except that rdbuf() - * and rdstate() remain unchanged. All values in the pword and iword - * arrays are copied. Before copying, each callback is invoked with - * erase_event. After copying, each (new) callback is invoked with - * copyfmt_event. The final step is to copy exceptions(). - */ - basic_ios& - copyfmt(const basic_ios& __rhs); - - /** - * @brief Retrieves the "empty" character. - * @return The current fill character. - * - * It defaults to a space (' ') in the current locale. - */ - char_type - fill() const - { - if (!_M_fill_init) - { - _M_fill = this->widen(' '); - _M_fill_init = true; - } - return _M_fill; - } - - /** - * @brief Sets a new "empty" character. - * @param ch The new character. - * @return The previous fill character. - * - * The fill character is used to fill out space when P+ characters - * have been requested (e.g., via setw), Q characters are actually - * used, and Q<P. It defaults to a space (' ') in the current locale. - */ - char_type - fill(char_type __ch) - { - char_type __old = this->fill(); - _M_fill = __ch; - return __old; - } - - // Locales: - /** - * @brief Moves to a new locale. - * @param loc The new locale. - * @return The previous locale. - * - * Calls @c ios_base::imbue(loc), and if a stream buffer is associated - * with this stream, calls that buffer's @c pubimbue(loc). - * - * Additional l10n notes are at - * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html - */ - locale - imbue(const locale& __loc); - - /** - * @brief Squeezes characters. - * @param c The character to narrow. - * @param dfault The character to narrow. - * @return The narrowed character. - * - * Maps a character of @c char_type to a character of @c char, - * if possible. - * - * Returns the result of - * @code - * std::use_facet<ctype<char_type> >(getloc()).narrow(c,dfault) - * @endcode - * - * Additional l10n notes are at - * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html - */ - char - narrow(char_type __c, char __dfault) const - { return __check_facet(_M_ctype).narrow(__c, __dfault); } - - /** - * @brief Widens characters. - * @param c The character to widen. - * @return The widened character. - * - * Maps a character of @c char to a character of @c char_type. - * - * Returns the result of - * @code - * std::use_facet<ctype<char_type> >(getloc()).widen(c) - * @endcode - * - * Additional l10n notes are at - * http://gcc.gnu.org/onlinedocs/libstdc++/manual/localization.html - */ - char_type - widen(char __c) const - { return __check_facet(_M_ctype).widen(__c); } - - protected: - // 27.4.5.1 basic_ios constructors - /** - * @brief Empty. - * - * The default constructor does nothing and is not normally - * accessible to users. - */ - basic_ios() - : ios_base(), _M_tie(0), _M_fill(char_type()), _M_fill_init(false), - _M_streambuf(0), _M_ctype(0), _M_num_put(0), _M_num_get(0) - { } - - /** - * @brief All setup is performed here. - * - * This is called from the public constructor. It is not virtual and - * cannot be redefined. - */ - void - init(basic_streambuf<_CharT, _Traits>* __sb); - - void - _M_cache_locale(const locale& __loc); - }; - -_GLIBCXX_END_NAMESPACE - -#ifndef _GLIBCXX_EXPORT_TEMPLATE -#include <bits/basic_ios.tcc> -#endif - -#endif /* _BASIC_IOS_H */ |