[antlr-interest] AST Tree question

[Gavin Lambert]

At 05:13 19/01/2007, Gibson, Andrea wrote:
>host : hostName
>        | ipv6Reference;
>
>hostName
>        :(domainLabel(PERIOD)?     )*;
>
>ipv6Reference
>        : OPEN_BRACKET ipv6Address CLOSE_BRACKET;

While this may not be directly causing your problem, the way 
you've got it set up there means that hostName (and therefore also 
host) can match nothing at all, which is probably not what you 
want.

I suspect you actually want:

hostName
     : domainLabel (PERIOD domainLabel)*
     ;
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.antlr.org/pipermail/antlr-interest/attachments/20070119/69afbd3b/attachment.html