[antlr-interest] Puzzling Problem
Sam Barnett-Cormack
sdb at geekworld.co.uk
Sun Apr 9 09:59:56 PDT 2006
Scott Amort wrote:
> On Sun, 2006-04-09 at 17:07 +0100, Sam Barnett-Cormack wrote:
>
>>And that would be a little odd... but I could instead statically define
>>the "0" literal in the lexer, I think... I just didn't think of the
>>effect of literals in the subgrammar. In fact, to be simpler, I could define
>>
>>zero
>> : "0"
>> ;
>
>
> I don't think that will work - you will just end up with a ZERO token
> type, and then a non-determinism error between ZERO and FLOAT_OR_INT.
I was actually suggesting zero being a parser rule in the supergrammar.
However, I think your other suggestion may be simpler, and also of
course do it with "-99999" as well.
Sam
> I think you could instead try adding:
>
> tokens {
> "0";
> }
>
> After the options in your lexer.
>
> Best,
> Scott
>
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