[antlr-interest] New user

[Matt Benson]

I had pretty much determined the meanings of ()* and
()+  but what, then, is the origin of the terms
"closure subrule" and "positive closure subrule" ? 
Have I just not read enough yet?  :)

Anyway, I just upgraded to the newer version and it
seems to have solved my compilation problem.  Tomorrow
I'll probably come up with more!

Thanks a lot,
Matt

--- Terence Parr <parrt at jguru.com> wrote:
> 
> On Wednesday, August 28, 2002, at 02:13  PM, Matt
> Benson wrote:
> 
> > I had looked in the FAQ and seen the relevant
> article.
> >  I had not seen the Getting started with Antlr
> > article.  I guess my biggest problem is unifying
> the
> > table in the manual that shows the punctuation and
> > keywords with English descriptions.  Understanding
> the
> > difference between a subrule, a closure subrule,
> and a
> > positive subrule seems like something that's only
> > going to come with much perusal of the
> documentation,
> > or more education in the field of parsing in
> general.
> 
> Ah.  well a subrule just lets you put alternatives
> in-line instead of 
> making another rule like this:
> 
> a : A (B|C) ;
> 
> The "(...)*" closure means zero more times around
> the loop and (...)+ 
> means at least once :)
> 
> >
> > The biggest problem I am facing at the moment is
> this:
> >  if I run Antlr on the latest java.g from John
> Pybus
> > via the ant-interest list, its declared
> charVocabulary
> > fills JavaLexer.java with various unicode/octal
> escape
> > sequences that will not compile with Sun's javac
> for
> > either 1.3 or 1.4.  I get various "empty character
> > literal", "unclosed character literal", and
> "illegal
> > unicode escape" errors.  I am using Antlr 2.7.1. 
> Do I
> > need to upgrade to the new alpha?
> 
> Yup...the 2.7.2a2 release (nearly the final thing)
> will fix lots of 
> that.
> 
> Ter
> 
> 
>  
> 
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/ 
> 
> 


__________________________________________________
Do You Yahoo!?
Yahoo! Finance - Get real-time stock quotes
http://finance.yahoo.com

 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/