[antlr-interest] Do lists work with SteingTemplates?

[Terence Parr]

A quick debugging session should solve this.  Just step through and  
see what's wrong.
Ter
On May 24, 2007, at 9:30 AM, Ted Villalba wrote:

> Thanks.
> Is there example code somewhere in the distribution that tests this  
> sort of +=/list construction.
> I've modified my template groups so that I think I am returning a  
> template for value, but have witnessed no change in the list  
> creation. Not entirely sure of myself here, so I may not be  
> returning a template yet.
> In my Tree grammar I have:
> expression : ^('=' tag (v+=value)+) -> template4(tag= 
> {$tag.text},values={$v}) ;
>
> value   : WCHAR+ -> template5(val={$value.text});
>
>
> In my templates:
>
> template4(tag, values) ::= "<tag>:<values>"
>
> template5(val) ::= "<val>"
>
>
> Is this returning a template for value ? I'm not sure. I don;t know  
> how to establish that I am returning a template for value.
>
>
> Thanks again,
>
> Ted
>
>
>
>
> On 5/24/07, Terence Parr <parrt at cs.usfca.edu> wrote:
>
> On May 24, 2007, at 8:05 AM, Ted Villalba wrote:
>
> > Hi,
> >
> > I've sent a similar post, but perhaps this one is worded better. It
> > even includes a glossy ascii diagram.
> > I'm wondering if anyone is using the following += notation to pass
> > a list in StringTemplates. I've not had any luck getting it to  
> work..
> > I basically have an AST with the following structure ^('=' tag value
> > +) , which creates an AST something like:
> >           =
> >      /    |     \
> >     /     |       \
> > tag value1  value2...
> >
> > I'm using a string template to pull these like so:
> > expression : ^('=' tag (v+=value)+) -> template4(tag=
> > {$tag.text},values={$v}) ;
> >
> > But this fails to pull any of the values into the list and I get
> > empty lists back. If I simply pull singular values back, and remove
> > the += list construct from the grammar, it works fine, for example,
> > the case where tag = value1. It just fails when tag = value 1
> > value2. I have not found a way to capture value2.
> >
>
> Most likely situation is that value is not returning a template.
>
> Ter
>
>

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