On Thursday 02 October 2008 15:23, Jim Idle wrote: > On Thu, 2008-10-02 at 15:01 -0700, Randall R Schulz wrote: > > On Thursday 02 October 2008 14:29, Jim Idle wrote: > > > Have you tried: > > > > > > > > > o : v1=nextrule > > > ( > > > (Or v2+=nextrule )+ ->^(OR $v1 $v2+) > > > > > > | // No OR's, default tree > > > > > > ) > > > ; > > > > > > > > > Or something similar? > > > > Well, it looks to me like it's very similar to what I did try, and > > this, too, yields the > > org.antlr.runtime.tree.RewriteEmptyStreamException. > > > > Whether you include an empty alternative (as you showed) or make > > the entire sub-rule optional, as I'd tried earlier: > > Yeah but you are referencing the rule itself there. If you get a > rewrite exception then it could be a bug. I will try a small example > - if htat works, then perhaps your lower down rules are returning > empty trees in cases of error or something way.
I'm sure the more deeply nested rules aren't returning empty trees, because they're the same rules I use to successfully produce the fully nested trees I'm trying to avoid. Randall Schulz List: http://www.antlr.org:8080/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org:8080/mailman/options/antlr-interest/your-email-address --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to il-antlr-interest@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en -~----------~----~----~----~------~----~------~--~---
