1grammar t057autoAST40;
2options {language=JavaScript;output=AST;}
3a returns [result]: x+=b x+=b {
4t=$x[1]
5$result = "2nd x="+t.toStringTree()+',';
6};
7b : ID;
8ID : 'a'..'z'+ ;
9INT : '0'..'9'+;
10WS : (' '|'\n') {$channel=HIDDEN;} ;
11