[antlr-interest] Error in 2.7.2

Matthew Ford Matthew.Ford at forward.com.au
Mon Jun 2 15:50:57 PDT 2003


Hi Ter,
Could you provide the actual fix please.

I tried the following but got the same error (Note: WS does it own printing)

protected
SCARF
  :( WS // track line numbers while you scarf
 | a:ALL_THE_REST
 ) {if (a!=null) {output.print(a);}}
 ;

protected
ALL_THE_REST
 : .
 ;

----- Original Message -----
From: "Terence Parr" <parrt at jguru.com>
To: <antlr-interest at yahoogroups.com>
Sent: Tuesday, June 03, 2003 2:52 AM
Subject: Re: [antlr-interest] Error in 2.7.2


>
> On Friday, May 30, 2003, at 06:06  PM, Matthew Ford wrote:
>
> > I downloaded 2.7.2 final.  There is an error in the ANTLR Parser
> >
> > I am getting the following error
> >     [antlr] ANTLR Parser Generator   Version 2.7.2   1989-2003
> > jGuru.com
> >     [antlr] C:\temp\antlrTest\links.g:107: warning:lexical
> > nondeterminism
> > between alts 1 and 2 of block upon
> >     [antlr] C:\temp\antlrTest\links.g:107:
> > k==1:'\t','\n','\u000c','\r',' '
> >     [antlr] C:\temp\antlrTest\links.g:107:     k==2:<end-of-token>
> >
> > with (full code below)
> >
> > protected
> > SCARF
> >  : WS // track line numbers while you scarf
> >  | . {}
> >  ;
> >
> > while
> > protected
> > SCARF
> >  : WS // track line numbers while you scarf
> >  | .
> >  ;
> >
> > gives no errors
>
> Ah.  Yes, i use "is wildcard alone in the alt" rather than a more
> intelligent but more difficult version that ignores actions.  Sorry
> about that. :(  You can just put into a subrule and then put action at
> the end.
>
> Ter
> --
> Co-founder, http://www.jguru.com
> Creator, ANTLR Parser Generator: http://www.antlr.org
> Co-founder, http://www.peerscope.com link sharing, pure-n-simple
> Lecturer in Comp. Sci., University of San Francisco
>
>
>
>
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>
>


 

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