1grammar TreeRewrite; 2 3options { 4 output=AST; 5 language=ObjC; 6} 7 8rule: INT subrule -> ^(subrule INT) 9 ; 10 11subrule 12 : INT 13 ; 14 15INT : ('0'..'9')+ 16 ; 17 18WS : ' ' {$channel=HIDDEN;} 19 ; 20