[antlr-interest] Choosing token

[Johannes Luber]

Stefan Chrobot wrote:
> Hello!
> 
> Is there a way other than reordering the rules to tell ANTLRv3 to prefer
> token BOOLEAN instead of IDENTIFIER?
> 
> grammar Test;
> 
> start    :    BOOLEAN
>     |    IDENTIFIER;
> 
> IDENTIFIER
>     :    ('a'..'z'|'A'..'Z'|'0'..'9')+;
>     
> BOOLEAN    :    'true' | 'false';

Yes. Look at
<http://www.antlr.org/wiki/display/ANTLR3/Quick+Starter+on+Parser+Grammars+-+No+Past+Experience+Required>
in the "How to define tokens" section for more information.

Best regards,
Johannes Luber