On Mar 9, 2011, at 7:15 PM, Gary Miller wrote:
> Hey Terrance,
>
> tree grammar T;
> a : some horrible mess of a RECURSIVE rule;
> b : B ;
>
> tree grammar U;
> import T;
> a : {pre action} T.a {post action}; // <-- wants to be able to refer
> to super rule
>
> It wouldn't be enough to just expose the super rule T.a.
> In the generated walker A_T the rule 'a' would need to call the
> delegators.a().
hmm...crap. you're right. polymorphism wouldn't work. it would call
T's 'a' not U's a.
>> ANTLR technically doesn't expose x.y syntax to the user and so I
>> didn't recognize the fact that you invoked the super rule. It
>> extracted only those rules from your super grammar that it needed.
>> It does this so that you can fill up libraries of grammars with
>> rules and then pick out which ones you want without bloating your
>> generated code.
>
> Thanks for raising the issue.
> Based on my bias ("Composite Tree Grammars are things of beauty") I
> would hope for more than a minor ;-)
I ignore most bug fields ;)
> How do I get a login the JIRA so that I can follow issues?
send me separate email with the username :)
>> That said, I am adding an improvement request for consideration.
>>
>> http://www.antlr.org/jira/browse/ANTLR-452
>
> Sorry, I can't parse this. Are you saying that you would like to
> removed imports from ANTLR?
fixed.
allow x.y syntax to refer to rule y in imported grammar x
>
>> I'd like to retract or how ANTLR it handles imports anyway.
"refactor"; voice recog error.
>
> Regards
> Gary
>
> P.S. is there any reason for ANTLR over Antlr | AntLR | AntLr |
> antlr etc.
easier to type. :)
T
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