[stringtemplate-interest] Re: [antlr-dev] length of bitset available?

Terence Parr parrt at cs.usfca.edu
Sat Jan 21 13:01:04 PST 2006


On Jan 21, 2006, at 12:56 PM, Kay Roepke wrote:

>
> On 21. Jan 2006, at 21:48 Uhr, Terence Parr wrote:
>
>> Ok, i see what you need..how about if I pass you the length for now?
>
> That sounds reasonable. Indeed I think it wouldn't be a problem to  
> always make the length
> accessible for multi-valued attributes, would there?

None that I could think of.  It then begs the question: what if I  
need number of bytes not words?  YOu'll want to be able to multiply  
by 4.  This is fine as long as it's a function of a length versus  
attribute property.  BUT, it opens up the syntax to general arith.  
expr and I then need to do analysis to figure out if you are doing  
salary*4.

> As long as there's no way of doing computations,
> it might shouldn't do any harm and be useful, too, for, say, page  
> flippers on web pages or so.

Yup...i intend to add to 2.3; is it a function like <length(names)>  
like first(), rest()?  Seems like.  I don't think <names.length> is  
right nor <names:length()>.

Ter



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