tablescanner.java

该工具也是用于字节码插桩

  }


  /**
   * Returns the current lexical state.
   */
  final public int yystate() {
    return yy_lexical_state;
  }


  /**
   * Enters a new lexical state
   *
   * @param newState the new lexical state
   */
  final public void yybegin(int newState) {
    yy_lexical_state = newState;
  }


  /**
   * Returns the text matched by the current regular expression.
   */
  final public String yytext() {
    return new String( yy_buffer, yy_startRead, yy_markedPos-yy_startRead );
  }


  /**
   * Returns the character at position <tt>pos</tt> from the 
   * matched text. 
   * 
   * It is equivalent to yytext().charAt(pos), but faster
   *
   * @param pos the position of the character to fetch. 
   *            A value from 0 to yylength()-1.
   *
   * @return the character at position pos
   */
  final public char yycharat(int pos) {
    return yy_buffer[yy_startRead+pos];
  }


  /**
   * Returns the length of the matched text region.
   */
  final public int yylength() {
    return yy_markedPos-yy_startRead;
  }


  /**
   * Reports an error that occured while scanning.
   *
   * In a wellformed scanner (no or only correct usage of 
   * yypushback(int) and a match-all fallback rule) this method 
   * will only be called with things that "Can't Possibly Happen".
   * If this method is called, something is seriously wrong
   * (e.g. a JFlex bug producing a faulty scanner etc.).
   *
   * Usual syntax/scanner level error handling should be done
   * in error fallback rules.
   *
   * @param   errorCode  the code of the errormessage to display
   */
  private void yy_ScanError(int errorCode) {
    String message;
    try {
      message = YY_ERROR_MSG[errorCode];
    }
    catch (ArrayIndexOutOfBoundsException e) {
      message = YY_ERROR_MSG[YY_UNKNOWN_ERROR];
    }

    throw new Error(message);
  } 


  /**
   * Pushes the specified amount of characters back into the input stream.
   *
   * They will be read again by then next call of the scanning method
   *
   * @param number  the number of characters to be read again.
   *                This number must not be greater than yylength()!
   */
  private void yypushback(int number)  {
    if ( number > yylength() )
      yy_ScanError(YY_PUSHBACK_2BIG);

    yy_markedPos -= number;
  }


  /**
   * Contains user EOF-code, which will be executed exactly once,
   * when the end of file is reached
   */
  private void yy_do_eof() throws java.io.IOException {
    if (!yy_eof_done) {
      yy_eof_done = true;
      yyclose();
    }
  }


  /**
   * Resumes scanning until the next regular expression is matched,
   * the end of input is encountered or an I/O-Error occurs.
   *
   * @return      the next token
   * @exception   IOException  if any I/O-Error occurs
   */
  public java_cup.runtime.Symbol next_token() throws java.io.IOException {
    int yy_input;
    int yy_action;

    // cached fields:
    int yy_currentPos_l;
    int yy_startRead_l;
    int yy_markedPos_l;
    int yy_endRead_l = yy_endRead;
    char [] yy_buffer_l = yy_buffer;
    char [] yycmap_l = yycmap;

    int [] yytrans_l = yytrans;
    int [] yy_rowMap_l = yy_rowMap;
    byte [] yy_attr_l = YY_ATTRIBUTE;

    while (true) {
      yy_markedPos_l = yy_markedPos;

      boolean yy_r = false;
      for (yy_currentPos_l = yy_startRead; yy_currentPos_l < yy_markedPos_l;
                                                             yy_currentPos_l++) {
        switch (yy_buffer_l[yy_currentPos_l]) {
        case '\u000B':
        case '\u000C':
        case '\u0085':
        case '\u2028':
        case '\u2029':
          yyline++;
          yycolumn = 0;
          yy_r = false;
          break;
        case '\r':
          yyline++;
          yycolumn = 0;
          yy_r = true;
          break;
        case '\n':
          if (yy_r)
            yy_r = false;
          else {
            yyline++;
            yycolumn = 0;
          }
          break;
        default:
          yy_r = false;
          yycolumn++;
        }
      }

      if (yy_r) {
        // peek one character ahead if it is \n (if we have counted one line too much)
        boolean yy_peek;
        if (yy_markedPos_l < yy_endRead_l)
          yy_peek = yy_buffer_l[yy_markedPos_l] == '\n';
        else if (yy_atEOF)
          yy_peek = false;
        else {
          boolean eof = yy_refill();
          yy_markedPos_l = yy_markedPos;
          yy_buffer_l = yy_buffer;
          if (eof) 
            yy_peek = false;
          else 
            yy_peek = yy_buffer_l[yy_markedPos_l] == '\n';
        }
        if (yy_peek) yyline--;
      }
      yy_action = -1;

      yy_startRead_l = yy_currentPos_l = yy_currentPos = 
                       yy_startRead = yy_markedPos_l;

      yy_state = yy_lexical_state;


      yy_forAction: {
        while (true) {

          if (yy_currentPos_l < yy_endRead_l)
            yy_input = yy_buffer_l[yy_currentPos_l++];
          else if (yy_atEOF) {
            yy_input = YYEOF;
            break yy_forAction;
          }
          else {
            // store back cached positions
            yy_currentPos  = yy_currentPos_l;
            yy_markedPos   = yy_markedPos_l;
            boolean eof = yy_refill();
            // get translated positions and possibly new buffer
            yy_currentPos_l  = yy_currentPos;
            yy_markedPos_l   = yy_markedPos;
            yy_buffer_l      = yy_buffer;
            yy_endRead_l     = yy_endRead;
            if (eof) {
              yy_input = YYEOF;
              break yy_forAction;
            }
            else {
              yy_input = yy_buffer_l[yy_currentPos_l++];
            }
          }
          int yy_next = yytrans_l[ yy_rowMap_l[yy_state] + yycmap_l[yy_input] ];
          if (yy_next == -1) break yy_forAction;
          yy_state = yy_next;

          int yy_attributes = yy_attr_l[yy_state];
          if ( (yy_attributes & 1) == 1 ) {
            yy_action = yy_state; 
            yy_markedPos_l = yy_currentPos_l; 
            if ( (yy_attributes & 8) == 8 ) break yy_forAction;
          }

        }
      }

      // store back cached position
      yy_markedPos = yy_markedPos_l;

      switch (yy_action) {

        case 2: 
        case 3: 
        case 5: 
        case 11: 
          { 
		throw new RuntimeException("Illegal character (" +
			yytext() + ") in input, at line " + (yyline + 1) +
			", character " + (yycolumn + 1));
	 }
        case 65: break;
        case 8: 
          {  sb.setLength(0); yybegin(STRING);  }
        case 66: break;
        case 17: 
          {  sb.append('\\');  }
        case 67: break;
        case 63: 
          {  return new Symbol(sym.STARTREFERENCED);  }
        case 68: break;
        case 9: 
          {  sb.append(yytext());  }
        case 69: break;
        case 10: 
          {  yybegin(YYINITIAL);  return new Symbol(sym.STRING, sb.toString());  }
        case 70: break;
        case 6: 
          {  /* do nothing */  }
        case 71: break;
        case 4: 
          { 
			int val;
			try
			{
				val = Integer.parseInt(yytext());
			}
			catch (Exception e)
			{
				if (!yytext().startsWith("-"))
					val = Integer.MIN_VALUE;
				else
					val = Integer.MAX_VALUE;
			}
			return new Symbol(sym.NUMBER, new Integer(val));
		 }
        case 72: break;
        case 33: 
          { 
				char c = (char)Integer.parseInt(yytext().substring(2), 16);
				sb.append(c);
			 }
        case 73: break;
        case 16: 
          {  sb.append('"');  }
        case 74: break;
        case 58: 
          {  return new Symbol(sym.STARTPROBED);  }
        case 75: break;
        case 57: 
          {  return new Symbol(sym.STARTROOTS);  }
        case 76: break;
        case 7: 
          {  return new Symbol(sym.SEMICOLON);  }
        case 77: break;
        default: 
          if (yy_input == YYEOF && yy_startRead == yy_currentPos) {
            yy_atEOF = true;
            yy_do_eof();
              { return new java_cup.runtime.Symbol(sym.EOF); }
          } 
          else {
            yy_ScanError(YY_NO_MATCH);
          }
      }
    }
  }


}