test.cpp

用于词法分析的词法分析器

# 30 "/usr/include/libio.h" 2 3













# 51 "/usr/include/libio.h" 3


# 63 "/usr/include/libio.h" 3


 







































 























 

















 


struct _IO_lock_t {
  void *ptr;
  short int field1;
  short int field2;
};

 

struct _IO_jump_t;  struct _IO_FILE;

struct _IO_marker {
  struct _IO_marker *_next;
  struct _IO_FILE *_sbuf;
   

   
  int _pos;
# 176 "/usr/include/libio.h" 3

};



struct _IO_FILE {







  int _flags;		 
   
  char* _IO_read_ptr;	 
  char* _IO_read_end;	 
  char* _IO_read_base;	 

  char* _IO_write_base;	 
  char* _IO_write_ptr;	 
  char* _IO_write_end;	 
  char* _IO_buf_base;	 
  char* _IO_buf_end;	 
   
  char *_IO_save_base;  
  char *_IO_backup_base;   
  char *_IO_save_end;  

  struct _IO_marker *_markers;
  
  struct _IO_FILE *_chain;
  
  int _fileno;
  int _blksize;
  _G_off_t  _offset;
  

   
  unsigned short _cur_column;
  char _unused;
  char _shortbuf[1];
  
   

  struct _IO_lock_t _IO_lock;
};





struct _IO_FILE_plus;
extern struct _IO_FILE_plus _IO_stdin_, _IO_stdout_, _IO_stderr_;





extern "C" {


extern int __underflow  (_IO_FILE*)  ;
extern int __uflow  (_IO_FILE*)  ;
extern int __overflow  (_IO_FILE*, int)  ;

















 



extern int _IO_vfscanf  (_IO_FILE*, const char*, _G_va_list , int*)  ;
extern int _IO_vfprintf  (_IO_FILE*, const char*, _G_va_list )  ;
extern _G_ssize_t  _IO_padn  (_IO_FILE *, int, _G_ssize_t )  ;
extern _G_size_t  _IO_sgetn  (_IO_FILE *, void*, _G_size_t )  ;

extern _G_fpos_t  _IO_seekoff  (_IO_FILE*, _G_off_t , int, int)  ;
extern _G_fpos_t  _IO_seekpos  (_IO_FILE*, _G_fpos_t , int)  ;

extern void _IO_free_backup_area  (_IO_FILE*)  ;


}



# 36 "/usr/include/g++/streambuf.h" 2 3

}
 






















extern "C++" {
class istream;  
class ostream; class streambuf;

 



typedef _G_off_t  streamoff;
typedef _G_fpos_t  streampos;
typedef _G_ssize_t  streamsize;

typedef unsigned long __fmtflags;
typedef unsigned char __iostate;

struct _ios_fields
{  
    streambuf *_strbuf;
    ostream* _tie;
    int _width;
    __fmtflags _flags;
    short  _fill;
    __iostate _state;
    __iostate _exceptions;
    int _precision;

    void *_arrays;  
};
















enum state_value {
    _good = 0 ,
    _eof = 1 ,
    _fail = 2 ,
    _bad = 4  };
enum open_mode {
    input = 1 ,
    output = 2 ,
    atend = 4 ,
    append = 8  };


class ios : public _ios_fields {
  ios& operator=(ios&);   
  public:
    typedef __fmtflags fmtflags;
    typedef int iostate;
    typedef int openmode;
    typedef int streamsize;
    enum io_state {
	goodbit = 0 ,
	eofbit = 1 ,
	failbit = 2 ,
	badbit = 4  };
    enum open_mode {
	in = 1 ,
	out = 2 ,
	ate = 4 ,
	app = 8 ,
	trunc = 16 ,
	nocreate = 32 ,
	noreplace = 64 ,
	bin = 128  };
    enum seek_dir { beg, cur, end};
     
     
    enum { skipws= 01 ,
	   left= 02 , right= 04 , internal= 010 ,
	   dec= 020 , oct= 040 , hex= 0100 ,
	   showbase= 0200 , showpoint= 0400 ,
	   uppercase= 01000 , showpos= 02000 ,
	   scientific= 04000 , fixed= 010000 ,
	   unitbuf= 020000 , stdio= 040000 



	   };
    enum {  
	basefield=dec+oct+hex,
	floatfield = scientific+fixed,
	adjustfield = left+right+internal
    };

# 166 "/usr/include/g++/streambuf.h" 3


    ostream* tie() const { return _tie; }
    ostream* tie(ostream* val) { ostream* save=_tie; _tie=val; return save; }

     
    short  fill() const { return (short )_fill; }
    short  fill(short  newf)
	{short  oldf = (short )_fill; _fill = (char)newf; return oldf;}
    fmtflags flags() const { return _flags; }
    fmtflags flags(fmtflags new_val) {
	fmtflags old_val = _flags; _flags = new_val; return old_val; }
    int precision() const { return _precision; }
    int precision(int newp) {
	unsigned short oldp = _precision; _precision = (unsigned short)newp;
	return oldp; }
    fmtflags setf(fmtflags val) {
	fmtflags oldbits = _flags;
	_flags |= val; return oldbits; }
    fmtflags setf(fmtflags val, fmtflags mask) {
	fmtflags oldbits = _flags;
	_flags = (_flags & ~mask) | (val & mask); return oldbits; }
    fmtflags unsetf(fmtflags mask) {
	fmtflags oldbits = _flags;
	_flags &= ~mask; return oldbits; }
    int width() const { return _width; }
    int width(int val) { int save = _width; _width = val; return save; }




    void _throw_failure() const { }

    void clear(iostate state = 0) {
	_state = _strbuf ? state : state|badbit;
	if (_state & _exceptions) _throw_failure(); }
    void set(iostate flag) { _state |= flag;
	if (_state & _exceptions) _throw_failure(); }
    void setstate(iostate flag) { _state |= flag;  
	if (_state & _exceptions) _throw_failure(); }
    int good() const { return _state == 0; }
    int eof() const { return _state & ios::eofbit; }
    int fail() const { return _state & (ios::badbit|ios::failbit); }
    int bad() const { return _state & ios::badbit; }
    iostate rdstate() const { return _state; }
    operator void*() const { return fail() ? (void*)0 : (void*)(-1); }
    int operator!() const { return fail(); }
    iostate exceptions() const { return _exceptions; }
    void exceptions(iostate enable) {
	_exceptions = enable;
	if (_state & _exceptions) _throw_failure(); }

    streambuf* rdbuf() const { return _strbuf; }
    streambuf* rdbuf(streambuf *_s) {
      streambuf *_old = _strbuf; _strbuf = _s; clear (); return _old; }

    static int sync_with_stdio(int on);
    static void sync_with_stdio() { sync_with_stdio(1); }
    static fmtflags bitalloc();
    static int xalloc();
    void*& pword(int);
    void* pword(int) const;
    long& iword(int);
    long iword(int) const;


    void unset(state_value flag) { _state &= ~flag; }
    void close();
    int is_open();
    int readable();
    int writable();


     
    class Init {
    public:
      Init () { }
    };

  protected:
    inline ios(streambuf* sb = 0, ostream* tie_to = 0);
    inline virtual ~ios();
    inline void init(streambuf* sb, ostream* tie = 0);
};




typedef ios::seek_dir _seek_dir;


 
 
 
 
 

 
 
class streammarker : private _IO_marker {
    friend class streambuf;
    void set_offset(int offset) { _pos = offset; }
  public:
    streammarker(streambuf *sb);
    ~streammarker();
    int saving() { return  1; }
    int delta(streammarker&);
    int delta();
};

struct streambuf : public _IO_FILE {  
    friend class ios;
    friend class istream;
    friend class ostream;
    friend class streammarker;
    const void *&_vtable() { return *(const void**)((_IO_FILE*)this + 1); }
  protected:
    static streambuf* _list_all;  
    _IO_FILE*& xchain() { return _chain; }
    void _un_link();
    void _link_in();
    char* gptr() const
      { return _flags  & 0x100  ? _IO_save_base : _IO_read_ptr; }
    char* pptr() const { return _IO_write_ptr; }
    char* egptr() const
      { return _flags  & 0x100  ? _IO_save_end : _IO_read_end; }
    char* epptr() const { return _IO_write_end; }
    char* pbase() const { return _IO_write_base; }
    char* eback() const
      { return _flags  & 0x100  ? _IO_save_base : _IO_read_base;}
    char* base() const { return _IO_buf_base; }
    char* ebuf() const { return _IO_buf_end; }
    int blen() const { return _IO_buf_end - _IO_buf_base; }
    void xput_char(char c) { *_IO_write_ptr++ = c; }
    int xflags() { return _flags ; }
    int xflags(int f) {int fl = _flags ; _flags  = f; return fl;}
    void xsetflags(int f) { _flags  |= f; }
    void xsetflags(int f, int mask)
      { _flags  = (_flags  & ~mask) | (f & mask); }
    void gbump(int n)
      { _flags  & 0x100  ? (_IO_save_base+=n):(_IO_read_ptr+=n);}
    void pbump(int n) { _IO_write_ptr += n; }
    void setb(char* b, char* eb, int a=0);
    void setp(char* p, char* ep)
      { _IO_write_base=_IO_write_ptr=p; _IO_write_end=ep; }
    void setg(char* eb, char* g, char *eg) {
      if (_flags  & 0x100 ) _IO_free_backup_area(this); 
      _IO_read_base = eb; _IO_read_ptr = g; _IO_read_end = eg; }
    char *shortbuf() { return _shortbuf; }

    int in_backup() { return _flags & 0x100 ; }
     
    char *Gbase() { return in_backup() ? _IO_save_base : _IO_read_base; }
     
    char *eGptr() { return in_backup() ? _IO_save_end : _IO_read_end; }
     
    char *Bbase() { return in_backup() ? _IO_read_base : _IO_save_base; }
    char *Bptr() { return _IO_backup_base; }
     
    char *eBptr() { return in_backup() ? _IO_read_end : _IO_save_end; }
    char *Nbase() { return _IO_save_base; }
    char *eNptr() { return _IO_save_end; }
    int have_backup() { return _IO_save_base != ((void*)0) ; }
    int have_markers() { return _markers != ((void*)0) ; }
    void free_backup_area();
    void unsave_markers();  
    int put_mode() { return _flags & 0x800 ; }
    int switch_to_get_mode();
    
    streambuf(int flags=0);
  public:
    static int flush_all();
    static void flush_all_linebuffered();  
    virtual ~streambuf();
    virtual int overflow(int c = (-1) );  
    virtual int underflow();  
    virtual int uflow();  
    virtual int pbackfail(int c);
 
    virtual streamsize xsputn(const char* s, streamsize n);
    virtual streamsize xsgetn(char* s, streamsize n);
    virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
    virtual streampos seekpos(streampos pos, int mode = ios::in|ios::out);

    streampos pubseekoff(streamoff o, _seek_dir d, int mode=ios::in|ios::out)
      { return _IO_seekoff (this, o, d, mode); }
    streampos pubseekpos(streampos pos, int mode = ios::in|ios::out)
      { return _IO_seekpos (this, pos, mode); }
    streampos sseekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
    streampos sseekpos(streampos pos, int mode = ios::in|ios::out);
    virtual streambuf* setbuf(char* p, int len);
    virtual int sync();
    virtual int doallocate();

    int seekmark(streammarker& mark, int delta = 0);
    int sputbackc(char c);
    int sungetc();
    int unbuffered() { return _flags & 2  ? 1 : 0; }
    int linebuffered() { return _flags & 0x200  ? 1 : 0; }
    void unbuffered(int i)
	{ if (i) _flags |= 2 ; else _flags &= ~2 ; }
    void linebuffered(int i)
	{ if (i) _flags |= 0x200 ; else _flags &= ~0x200 ; }
    int allocate() {  
	if (base() || unbuffered()) return 0;
	else return doallocate(); }
     
    void allocbuf() { if (base() == ((void*)0) ) doallocbuf(); }
    void doallocbuf();
    int in_avail() { return _IO_read_end - _IO_read_ptr; }
    int out_waiting() { return _IO_write_ptr - _IO_write_base; }
    streamsize sputn(const char* s, streamsize n) { return xsputn(s, n); }
    streamsize padn(char pad, streamsize n) { return _IO_padn(this, pad, n); }
    streamsize sgetn(char* s, streamsize n) { return _IO_sgetn(this, s, n); }
    int ignore(int);
    int get_column();
    int set_column(int);
    long sgetline(char* buf, _G_size_t  n, char delim, int putback_delim);
    int sputc(int c) { return (((  this )->_IO_write_ptr >= (  this )->_IO_write_end) ? __overflow(  this , (unsigned char)( c )) : (unsigned char)(*(  this )->_IO_write_ptr++ = ( c ))) ; }
    int sbumpc() { return (( this )->_IO_read_ptr >= ( this )->_IO_read_end ? __uflow( this ) : *(unsigned char*)( this )->_IO_read_ptr++) ; }
    int sgetc() { return (( this )->_IO_read_ptr >= ( this )->_IO_read_end && __underflow( this ) == (-1)  ? (-1)  : *(unsigned char*)( this )->_IO_read_ptr) ; }
    int snextc() {
	if (_IO_read_ptr >= _IO_read_end && __underflow(this) == (-1) )
	  return (-1) ;
	else return _IO_read_ptr++, sgetc(); }
    void stossc() { if (_IO_read_ptr < _IO_read_end) _IO_read_ptr++; }
    int vscan(char const *fmt0, _G_va_list  ap, ios* stream = ((void*)0) );
    int scan(char const *fmt0 ...);
    int vform(char const *fmt0, _G_va_list  ap);
    int form(char const *fmt0 ...);




    virtual streamsize sys_read(char* buf, streamsize size);
    virtual streamsize sys_write(const char*, streamsize);
    virtual streampos sys_seek(streamoff, _seek_dir);
    virtual int sys_close();
    virtual int sys_stat(void*);  
};

 
 

class filebuf : public streambuf {
  protected:
    void init();
  public:
    static const int openprot;  
    filebuf();
    filebuf(int fd);
    filebuf(int fd, char* p, int len);



    ~filebuf();
    filebuf* attach(int fd);
    filebuf* open(const char *filename, const char *mode);
    filebuf* open(const char *filename, ios::openmode mode, int prot = 0664);
    virtual int underflow();
    virtual int overflow(int c = (-1) );
    int is_open() const { return _fileno >= 0; }
    int fd() const { return is_open() ? _fileno : (-1) ; }
    filebuf* close();
    virtual int doallocate();
    virtual streampos seekoff(streamoff, _seek_dir, int mode=ios::in|ios::out);
    virtual streambuf* setbuf(char* p, int len);
    streamsize xsputn(const char* s, streamsize n);
    streamsize xsgetn(char* s, streamsize n);
    virtual int sync();
  protected:  
 
    int is_reading() { return eback() != egptr(); }
    char* cur_ptr() { return is_reading() ?  gptr() : pptr(); }
     
    char* file_ptr() { return eGptr(); }
     
    virtual streamsize sys_read(char* buf, streamsize size);
    virtual streampos sys_seek(streamoff, _seek_dir);
    virtual streamsize sys_write(const char*, streamsize);
    virtual int sys_stat(void*);  
    virtual int sys_close();




};

inline void ios::init(streambuf* sb, ostream* tie_to) {
		_state = sb ? ios::goodbit : ios::badbit; _exceptions=0;
		_strbuf=sb; _tie = tie_to; _width=0; _fill=' ';

		_flags=ios::skipws|ios::dec;



		_precision=6; _arrays = 0; }

inline ios::ios(streambuf* sb, ostream* tie_to) { init(sb, tie_to); }

inline ios::~ios() {



    if (_arrays) delete [] _arrays;
}
}  

# 31 "/usr/include/g++/iostream.h" 2 3


extern "C++" {
class istream; class ostream;
typedef ios& (*__manip)(ios&);
typedef istream& (*__imanip)(istream&);
typedef ostream& (*__omanip)(ostream&);

extern istream& ws(istream& ins);
extern ostream& flush(ostream& outs);
extern ostream& endl(ostream& outs);
extern ostream& ends(ostream& outs);

class ostream : virtual public ios
{
     
    void do_osfx();
  public:
    ostream() { }
    ostream(streambuf* sb, ostream* tied= ((void*)0) );
    int opfx() {
	if (!good()) return 0; else { if (_tie) _tie->flush(); return 1;} }
    void osfx() { if (flags() & (ios::unitbuf|ios::stdio))
		      do_osfx(); }
    ostream& flush();
    ostream& put(char c) { _strbuf->sputc(c); return *this; }

     
    ostream& put(unsigned char c) { return put((char)c); }
    ostream& put(__signed  char c) { return put((char)c); }

    ostream& write(const char *s, streamsize n);
    ostream& write(const unsigned char *s, streamsize n)
      { return write((const char*)s, n);}
    ostream& write(const __signed  char *s, streamsize n)
      { return write((const char*)s, n);}
    ostream& write(const void *s, streamsize n)
      { return write((const char*)s, n);}
    ostream& seekp(streampos);
    ostream& seekp(streamoff, _seek_dir);
    streampos tellp();
    ostream& form(const char *format ...);
    ostream& vform(const char *format, _G_va_list  args);

    ostream& operator<<(char c);
    ostream& operator<<(unsigned char c) { return (*this) << (char)c; }
    ostream& operator<<(__signed  char c) { return (*this) << (char)c; }
    ostream& operator<<(const char *s);
    ostream& operator<<(const unsigned char *s)
	{ return (*this) << (const char*)s; }
    ostream& operator<<(const __signed  char *s)
	{ return (*this) << (const char*)s; }
    ostream& operator<<(const void *p);
    ostream& operator<<(int n);
    ostream& operator<<(unsigned int n);
    ostream& operator<<(long n);
    ostream& operator<<(unsigned long n);

    ostream& operator<<(long long n);
    ostream& operator<<(unsigned long long n);

    ostream& operator<<(short n) {return operator<<((int)n);}
    ostream& operator<<(unsigned short n) {return operator<<((unsigned int)n);}

    ostream& operator<<(bool b) { return operator<<((int)b); }

    ostream& operator<<(double n);
    ostream& operator<<(float n) { return operator<<((double)n); }

    ostream& operator<<(long double n);



    ostream& operator<<(__omanip func) { return (*func)(*this); }
    ostream& operator<<(__manip func) {(*func)(*this); return *this;}
    ostream& operator<<(streambuf*);

    streambuf* ostreambuf() const { return _strbuf; }

};

class istream : virtual public ios
{
     
protected:
    _G_size_t  _gcount;

    int _skip_ws();
  public:
    istream() { _gcount = 0; }
    istream(streambuf* sb, ostream*tied= ((void*)0) );
    istream& get(char* ptr, int len, char delim = '\n');
    istream& get(unsigned char* ptr, int len, char delim = '\n')
	{ return get((char*)ptr, len, delim); }
    istream& get(char& c);
    istream& get(unsigned char& c) { return get((char&)c); }
    istream& getline(char* ptr, int len, char delim = '\n');
    istream& getline(unsigned char* ptr, int len, char delim = '\n')
	{ return getline((char*)ptr, len, delim); }
    istream& get(__signed  char& c)  { return get((char&)c); }
    istream& get(__signed  char* ptr, int len, char delim = '\n')
	{ return get((char*)ptr, len, delim); }
    istream& getline(__signed  char* ptr, int len, char delim = '\n')
	{ return getline((char*)ptr, len, delim); }
    istream& read(char *ptr, streamsize n);
    istream& read(unsigned char *ptr, streamsize n)
      { return read((char*)ptr, n); }
    istream& read(__signed  char *ptr, streamsize n)
      { return read((char*)ptr, n); }
    istream& read(void *ptr, streamsize n)
      { return read((char*)ptr, n); }
    istream& get(streambuf& sb, char delim = '\n');
    istream& gets(char **s, char delim = '\n');
    int ipfx(int need = 0) {
	if (!good()) { set(ios::failbit); return 0; }
	else {
	  if (_tie && (need == 0 || rdbuf()->in_avail() < need)) _tie->flush();
	  if (!need && (flags() & ios::skipws)) return _skip_ws();
	  else return 1;
	}
    }
    int ipfx0() {  
	if (!good()) { set(ios::failbit); return 0; }
	else {
	  if (_tie) _tie->flush();
	  if (flags() & ios::skipws) return _skip_ws();