1 2grammar t058rewriteAST25; 3options {language=JavaScript;output=AST;} 4a : ID INT -> {false}? ^(ID INT) 5 -> {true}? ^(INT ID) 6 -> ID 7 ; 8ID : 'a'..'z'+ ; 9INT : '0'..'9'+; 10WS : (' '|'\n') {$channel=HIDDEN;} ;