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Diffstat (limited to 'libstdc++-v3/bits/ios_base.h')
| -rw-r--r-- | libstdc++-v3/bits/ios_base.h | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/libstdc++-v3/bits/ios_base.h b/libstdc++-v3/bits/ios_base.h new file mode 100644 index 0000000..ee257c6 --- /dev/null +++ b/libstdc++-v3/bits/ios_base.h @@ -0,0 +1,576 @@ +// Iostreams base classes -*- C++ -*- + +// Copyright (C) 1997-1999 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. + +// +// ISO C++ 14882: 27.8 File-based streams +// + +#ifndef _CPP_BITS_IOSBASE_H +#define _CPP_BITS_IOSBASE_H 1 + +namespace std { + + // The following definitions of bitmask types are enums, not ints, + // as permitted (but not required) in the standard, in order to provide + // better type safety in iostream calls. A side effect is that + // expressions involving them are no longer compile-time constants. + enum _Ios_Fmtflags { _S_ios_fmtflags_end = 1<<16 }; + + inline _Ios_Fmtflags + operator&(_Ios_Fmtflags __a, _Ios_Fmtflags __b) + { return _Ios_Fmtflags(static_cast<int>(__a) & static_cast<int>(__b)); } + + inline _Ios_Fmtflags + operator|(_Ios_Fmtflags __a, _Ios_Fmtflags __b) + { return _Ios_Fmtflags(static_cast<int>(__a) | static_cast<int>(__b)); } + + inline _Ios_Fmtflags + operator^(_Ios_Fmtflags __a, _Ios_Fmtflags __b) + { return _Ios_Fmtflags(static_cast<int>(__a) ^ static_cast<int>(__b)); } + + inline _Ios_Fmtflags + operator|=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b) + { return __a = __a | __b; } + + inline _Ios_Fmtflags + operator&=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b) + { return __a = __a & __b; } + + inline _Ios_Fmtflags + operator^=(_Ios_Fmtflags& __a, _Ios_Fmtflags __b) + { return __a = __a ^ __b; } + + inline _Ios_Fmtflags + operator~(_Ios_Fmtflags __a) + { return _Ios_Fmtflags(~static_cast<int>(__a)); } + + + enum _Ios_Openmode { _S_ios_openmode_end = 1<<16 }; + + inline _Ios_Openmode + operator&(_Ios_Openmode __a, _Ios_Openmode __b) + { return _Ios_Openmode(static_cast<int>(__a) & static_cast<int>(__b)); } + + inline _Ios_Openmode + operator|(_Ios_Openmode __a, _Ios_Openmode __b) + { return _Ios_Openmode(static_cast<int>(__a) | static_cast<int>(__b)); } + + inline _Ios_Openmode + operator^(_Ios_Openmode __a, _Ios_Openmode __b) + { return _Ios_Openmode(static_cast<int>(__a) ^ static_cast<int>(__b)); } + + inline _Ios_Openmode + operator|=(_Ios_Openmode& __a, _Ios_Openmode __b) + { return __a = __a | __b; } + + inline _Ios_Openmode + operator&=(_Ios_Openmode& __a, _Ios_Openmode __b) + { return __a = __a & __b; } + + inline _Ios_Openmode + operator^=(_Ios_Openmode& __a, _Ios_Openmode __b) + { return __a = __a ^ __b; } + + inline _Ios_Openmode + operator~(_Ios_Openmode __a) + { return _Ios_Openmode(~static_cast<int>(__a)); } + + + enum _Ios_Iostate { _S_ios_iostate_end = 1<<16 }; + + inline _Ios_Iostate + operator&(_Ios_Iostate __a, _Ios_Iostate __b) + { return _Ios_Iostate(static_cast<int>(__a) & static_cast<int>(__b)); } + + inline _Ios_Iostate + operator|(_Ios_Iostate __a, _Ios_Iostate __b) + { return _Ios_Iostate(static_cast<int>(__a) | static_cast<int>(__b)); } + + inline _Ios_Iostate + operator^(_Ios_Iostate __a, _Ios_Iostate __b) + { return _Ios_Iostate(static_cast<int>(__a) ^ static_cast<int>(__b)); } + + inline _Ios_Iostate + operator|=(_Ios_Iostate& __a, _Ios_Iostate __b) + { return __a = __a | __b; } + + inline _Ios_Iostate + operator&=(_Ios_Iostate& __a, _Ios_Iostate __b) + { return __a = __a & __b; } + + inline _Ios_Iostate + operator^=(_Ios_Iostate& __a, _Ios_Iostate __b) + { return __a = __a ^ __b; } + + inline _Ios_Iostate + operator~(_Ios_Iostate __a) + { return _Ios_Iostate(~static_cast<int>(__a)); } + + enum _Ios_Seekdir { _S_ios_Seekdir_end = 1<<16 }; + + // 27.4.2 Class ios_base + class ios_base + { + public: + + // 27.4.2.1.1 Class ios_base::failure + class failure : public exception + { + public: +#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS + // Can't do exception(_msg) as defined in 27.4.2.1.1 + explicit + failure(const string& __str); + + virtual + ~failure() { }; + + virtual const + char* what() const throw() { return _M_name; } + + private: + enum { _M_bufsize = 256 }; + char _M_name[_M_bufsize]; +#endif + }; + + // 27.4.2.1.2 Type ios_base::fmtflags + typedef _Ios_Fmtflags fmtflags; + // 27.4.2.1.2 Type fmtflags + static const fmtflags boolalpha = fmtflags(__ios_flags::_S_boolalpha); + static const fmtflags dec = fmtflags(__ios_flags::_S_dec); + static const fmtflags fixed = fmtflags(__ios_flags::_S_fixed); + static const fmtflags hex = fmtflags(__ios_flags::_S_hex); + static const fmtflags internal = fmtflags(__ios_flags::_S_internal); + static const fmtflags left = fmtflags(__ios_flags::_S_left); + static const fmtflags oct = fmtflags(__ios_flags::_S_oct); + static const fmtflags right = fmtflags(__ios_flags::_S_right); + static const fmtflags scientific = fmtflags(__ios_flags::_S_scientific); + static const fmtflags showbase = fmtflags(__ios_flags::_S_showbase); + static const fmtflags showpoint = fmtflags(__ios_flags::_S_showpoint); + static const fmtflags showpos = fmtflags(__ios_flags::_S_showpos); + static const fmtflags skipws = fmtflags(__ios_flags::_S_skipws); + static const fmtflags unitbuf = fmtflags(__ios_flags::_S_unitbuf); + static const fmtflags uppercase = fmtflags(__ios_flags::_S_uppercase); + static const fmtflags adjustfield = fmtflags(__ios_flags::_S_adjustfield); + static const fmtflags basefield = fmtflags(__ios_flags::_S_basefield); + static const fmtflags floatfield = fmtflags(__ios_flags::_S_floatfield); + + // 27.4.2.1.3 Type ios_base::iostate + typedef _Ios_Iostate iostate; + static const iostate badbit = iostate(__ios_flags::_S_badbit); + static const iostate eofbit = iostate(__ios_flags::_S_eofbit); + static const iostate failbit = iostate(__ios_flags::_S_failbit); + static const iostate goodbit = iostate(0); + + // 27.4.2.1.4 Type openmode + typedef _Ios_Openmode openmode; + static const openmode app = openmode(__ios_flags::_S_app); + static const openmode ate = openmode(__ios_flags::_S_ate); + static const openmode binary = openmode(__ios_flags::_S_bin); + static const openmode in = openmode(__ios_flags::_S_in); + static const openmode out = openmode(__ios_flags::_S_out); + static const openmode trunc = openmode(__ios_flags::_S_trunc); + + // 27.4.2.1.5 Type seekdir + typedef _Ios_Seekdir seekdir; + static const seekdir beg = seekdir(0); + static const seekdir cur = seekdir(SEEK_CUR); + static const seekdir end = seekdir(SEEK_END); + +#ifdef _GLIBCPP_DEPRICATED + typedef int io_state; + typedef int open_mode; + typedef int seek_dir; +#endif + + // Callbacks; + enum event + { + erase_event, + imbue_event, + copyfmt_event + }; + + typedef void (*event_callback) (event, ios_base&, int); + + void + register_callback(event_callback __fn, int __index); + + protected: + // Data Members + streamsize _M_precision; + streamsize _M_width; + fmtflags _M_flags; + + // 27.4.2.6 Members for callbacks + // 27.4.2.6 ios_base callbacks + + struct _Callback_list + { + // Data Members + _Callback_list* _M_next; + ios_base::event_callback _M_fn; + int _M_index; + int _M_refcount; // 0 means one reference. + + _Callback_list(ios_base::event_callback __fn, int __index, + _Callback_list* __cb) + : _M_next(__cb), _M_fn(__fn), _M_index(__index), _M_refcount(0) { } + + void + _M_add_reference() { ++_M_refcount; } // XXX MT + + int + _M_remove_reference() { return _M_refcount--; } // 0 => OK to delete + }; + + _Callback_list* _M_callbacks; + + void + _M_call_callbacks(event __ev) throw(); + + void + _M_dispose_callbacks(void); + + // 27.4.2.5 Members for iword/pword storage + struct _Words + { + void* _M_pword; + long _M_iword; + }; + + static const int _S_local_words = 8; + _Words _M_word_array[_S_local_words]; // Guaranteed storage + _Words _M_dummy; // Only for failed iword/pword calls. + _Words* _M_words; + int _M_word_limit; + + _Words& + _M_grow_words(int __index); + + // Members for locale and locale caching. + locale _M_locale_ios; + + void + _M_init(); + + public: + // 27.4.2.1.6 Class ios_base::Init + // Used to initialize standard streams. In theory, g++ could use + // -finit-priority to order this stuff correctly without going + // through these machinations. + + class Init + { + friend class ios_base; + public: + Init(); + ~Init(); + private: + static int _M_ios_base_init; + filebuf* _M_cout; + filebuf* _M_cin; + filebuf* _M_cerr; +#ifdef _GLIBCPP_USE_WCHAR_T + wfilebuf* _M_wcout; + wfilebuf* _M_wcin; + wfilebuf* _M_wcerr; +#endif + }; + + // Fmtflags state: + inline fmtflags + flags() const { return _M_flags; } + + inline fmtflags + flags(fmtflags __fmtfl) + { + fmtflags __old = _M_flags; + _M_flags = __fmtfl; + return __old; + } + + inline fmtflags + setf(fmtflags __fmtfl) + { + fmtflags __old = _M_flags; + _M_flags |= __fmtfl; + return __old; + } + + inline fmtflags + setf(fmtflags __fmtfl, fmtflags __mask) + { + fmtflags __old = _M_flags; + _M_flags &= ~__mask; + _M_flags |= (__fmtfl & __mask); + return __old; + } + + inline void + unsetf(fmtflags __mask) { _M_flags &= ~__mask; } + + inline streamsize + precision() const { return _M_precision; } + + inline streamsize + precision(streamsize __prec) + { + streamsize __old = _M_precision; + _M_precision = __prec; + return __old; + } + + inline streamsize + width() const { return _M_width; } + + inline streamsize + width(streamsize __wide) + { + streamsize __old = _M_width; + _M_width = __wide; + return __old; + } + + static bool + sync_with_stdio(bool __sync = true); + + // Locales: + locale + imbue(const locale& __loc); + + inline locale + getloc() const { return _M_locale_ios; } + + // Storage: + static int + xalloc() throw(); + + inline long& + iword(int __ix) + { + _Words& __word = (__ix < _M_word_limit) + ? _M_words[__ix] : _M_grow_words(__ix); + return __word._M_iword; + } + + inline void*& + pword(int __ix) + { + _Words& __word = (__ix < _M_word_limit) + ? _M_words[__ix] : _M_grow_words(__ix); + return __word._M_pword; + } + + // Destructor + ~ios_base(); + + protected: + ios_base(); + +#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS + private: + ios_base(const ios_base&); + + ios_base& + operator=(const ios_base&); +#endif + }; + + // 27.4.5.1 fmtflags manipulators: + inline ios_base& + boolalpha(ios_base& __base) + { + __base.setf(ios_base::boolalpha); + return __base; + } + + inline ios_base& + noboolalpha(ios_base& __base) + { + __base.unsetf(ios_base::boolalpha); + return __base; + } + + inline ios_base& + showbase(ios_base& __base) + { + __base.setf(ios_base::showbase); + return __base; + } + + inline ios_base& + noshowbase(ios_base& __base) + { + __base.unsetf(ios_base::showbase); + return __base; + } + + inline ios_base& + showpoint(ios_base& __base) + { + __base.setf(ios_base::showpoint); + return __base; + } + + inline ios_base& + noshowpoint(ios_base& __base) + { + __base.unsetf(ios_base::showpoint); + return __base; + } + + inline ios_base& + showpos(ios_base& __base) + { + __base.setf(ios_base::showpos); + return __base; + } + + inline ios_base& + noshowpos(ios_base& __base) + { + __base.unsetf(ios_base::showpos); + return __base; + } + + inline ios_base& + skipws(ios_base& __base) + { + __base.setf(ios_base::skipws); + return __base; + } + + inline ios_base& + noskipws(ios_base& __base) + { + __base.unsetf(ios_base::skipws); + return __base; + } + + inline ios_base& + uppercase(ios_base& __base) + { + __base.setf(ios_base::uppercase); + return __base; + } + + inline ios_base& + nouppercase(ios_base& __base) + { + __base.unsetf(ios_base::uppercase); + return __base; + } + + inline ios_base& + unitbuf(ios_base& __base) + { + __base.setf(ios_base::unitbuf); + return __base; + } + + inline ios_base& + nounitbuf(ios_base& __base) + { + __base.unsetf(ios_base::unitbuf); + return __base; + } + + // 27.4.5.2 adjustfield anipulators: + inline ios_base& + internal(ios_base& __base) + { + __base.setf(ios_base::internal, ios_base::adjustfield); + return __base; + } + + inline ios_base& + left(ios_base& __base) + { + __base.setf(ios_base::left, ios_base::adjustfield); + return __base; + } + + inline ios_base& + right(ios_base& __base) + { + __base.setf(ios_base::right, ios_base::adjustfield); + return __base; + } + + // 27.4.5.3 basefield anipulators: + inline ios_base& + dec(ios_base& __base) + { + __base.setf(ios_base::dec, ios_base::basefield); + return __base; + } + + inline ios_base& + hex(ios_base& __base) + { + __base.setf(ios_base::hex, ios_base::basefield); + return __base; + } + + inline ios_base& + oct(ios_base& __base) + { + __base.setf(ios_base::oct, ios_base::basefield); + return __base; + } + + // 27.4.5.4 floatfield anipulators: + inline ios_base& + fixed(ios_base& __base) + { + __base.setf(ios_base::fixed, ios_base::floatfield); + return __base; + } + + inline ios_base& + scientific(ios_base& __base) + { + __base.setf(ios_base::scientific, ios_base::floatfield); + return __base; + } + +} // namespace std + +#endif /* _CPP_BITS_IOSBASE_H */ + + + + + + + + + |