ios_base.h

gcc3.2.1源代码

    _Words& 
    _M_grow_words(int __index);

    // Members for locale and locale caching.
    locale 		_M_ios_locale;

    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();
      
      static void
      _S_ios_create(bool __sync);
      
      static void
      _S_ios_destroy();

    private:
      static int 	_S_ios_base_init;
      static bool	_S_synced_with_stdio;
    };

    // 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_ios_locale; }

    // Storage:
    static int 
    xalloc() throw();

    inline long& 
    iword(int __ix)
    {
      _Words& __word = (__ix < _M_word_size) 
			? _M_word[__ix] : _M_grow_words(__ix);
      return __word._M_iword;
    }

    inline void*& 
    pword(int __ix)
    {
      _Words& __word = (__ix < _M_word_size) 
			? _M_word[__ix] : _M_grow_words(__ix);
      return __word._M_pword;
    }

    // Destructor
    ~ios_base();

  protected:
    ios_base();

#ifdef _GLIBCPP_RESOLVE_LIB_DEFECTS
  //50.  Copy constructor and assignment operator of ios_base
  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 */