[antlr-interest] Clarifications on grammar rules.

[Terence Parr]

On Apr 6, 2004, at 2:08 PM, Bharath S wrote:
> I have a rule of the form:
> ----------------------------------------
> Time: ('0'..'9')+
>       ('d'{$setType(Days);} | 's'{$setType(Secs);}
>       | {$setType(INT);}) ;
>
> and
> -------------------------
> protected Days: INT('d');
> protected Secs: INT('s');
> protected INT: ('0'..'9')+;
> ---------------------------
> When I try "Test: Secs|Days", I get a non-determinism
> warning and it makes sense because both rules have
> common left prefixes. However, I have no clue to how I
> can fix it. If I write a separate rule to remove
> common prefixes in "Secs" and "Days", it conflicts
> with the above rule, "Time". Am I missing something
> obvious?

Hi.

I'm not sure what you are trying to match here.  What do you mean here:

> When I try "Test: Secs|Days", I get a non-determinism

Thanks,
Ter
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