1grammar t031emptyAlt;
2options {
3  language = JavaScript;
4}
5
6r
7    : NAME
8        ( {this.cond}?=> WS+ NAME
9        |
10        )
11        EOF
12    ;
13
14NAME: ('a'..'z') ('a'..'z' | '0'..'9')+;
15NUMBER: ('0'..'9')+;
16WS: ' '+;
17