[type]
Lexer

[grammar]
lexer grammar L;
I : ({<PlusText("stuff fail: "):writeln()>} 'a'
| {<PlusText("stuff0:"):writeln()>}
       'a' {<PlusText("stuff1: "):writeln()>}
       'b' {<PlusText("stuff2: "):writeln()>})
       {<Text():writeln()>} ;
WS : (' '|'\n') -> skip ;
J : .;

[input]
ab

[output]
stuff0:
stuff1: a
stuff2: ab
ab
[@0,0:1='ab',<1>,1:0]
[@1,2:1='<EOF>',<-1>,1:2]