[antlr-interest] is a non unique reference - error when trying to fix

[Johannes Luber]

Hed Bar-Nissan schrieb:
> I get on this:/
> question:    'question:' WS    SENTANCE ';;' WS
>         'answer:'  WS    SENTANCE ';;'
>     {System.out.print("Question is" + $SENTANCE.getText() + ", Answer is 
> " + $SENTANCE.getText());} ;/
> 
> SENTANCE is a non unique reference which is fair,

I'd like to point out that one spells "sentence", not "sentance".
> 
> but when i try to fix like i found here: 
> http://www.antlr.org/pipermail/antlr-interest/2008-April/027854.html/
>     {System.out.print("Question is" + $SENTANCE1.getText() + ", Answer 
> is " + $SENTANCE2.getText());} ;
> /
> Generation succeeds but i get a compilation error because these lines 
> are not generated:
> Token SENTANCE1=(Token)input.LT(1);
> 
> A bug or misuse?

You didn't use labels correctly. Try

question:    'question:' WS    s1=SENTENCE ';;' WS
         'answer:'  WS    s2=SENTENCE ';;'
     {System.out.print("Question is" + $s1.getText() + ", Answer is
" + $s2.getText());} ;

Instead "getText()" "text" should work, too, and is the preferred syntax.

Johannes