grammar Combined; options { language=ObjC; } stat: identifier+ ; identifier : ID ; ID : ('a'..'z'|'A'..'Z'|'_') ('a'..'z'|'A'..'Z'|'0'..'9'|'_')* ; INT : ('0'..'9')+ ; WS : ( ' ' | '\t' | '\r' | '\n' )+ { $channel=99; } ;