[antlr-interest] Passing values in tree walker

[Mike Jones]

Terence,

I found the problem. There was a second reference to expr without the
[i2] farther down in the grammar. I had not noticed that the java error
was related to this other expression.

Thanks, I'm flying!

Mike

-----Original Message-----
From: Terence Parr [mailto:parrt at cs.usfca.edu] 
Sent: Wednesday, September 03, 2003 11:34 PM
To: antlr-interest at yahoogroups.com
Subject: Re: [antlr-interest] Passing values in tree walker


On Wednesday, September 3, 2003, at 10:32  PM, Mike Jones wrote:

> Terence,
>
> I feel stupid!
>
> Ok, so to reference it:
>
> Expr2
> {
> 	int i2;
> }
> : expr[i2]
> ;
>
> I tried that and the resulting code fails because it only calls with 
> the
> AST parameter.
>
> Any suggestion?

Hmm...must be a rule name issue...that is the way I pass arguments all 
the time. :)  I'll bet you can check the java.g grammar from the site 
and you'll see me building trees by passing info down into other rules. 
  Could be a weird syntax gotcha too.

Terence
--
Professor Comp. Sci., University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
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