anchor.diff:  
   fastentry: NAME INDEX NAME;
   
  -
  
positive.code: 	;
  
  protected
  NUM	: ('-')? ('0'..'9')+
  	| "0x" ('0'..'9'|'A'..'F')+ ;
  
  protected
  FLOATNUM : NUM '.' ('0'..'9')+ ( ('e'|'E') NUM )?;
  
  FLOAT_OR_NUM
  	: (FLOATNUM ) => FLOATNUM { $setType(FLOATNUM); }
  
negative.code: 	| LPAREN exp RPAREN
  	| LSQUARE exp QUEST exp COLON exp RSQUARE
  	| "addr" LPAREN exp RPAREN
  //	| conv_func LPAREN num COMMA num COMMA exp RPAREN
  //	| transcend LPAREN exp RPAREN
  	| NAME LPAREN exp_list RPAREN
  	| NAME LSQUARE NAME RSQUARE
  	;
  
  