[antlr-interest] Error in generating tree walk [and one little suggestion for Prof. Terence]

[Peizhao Hu]

Thanks a lot!

for future reference to anyone else have the same problem.
My problem is that I have a rule written as

assignment_rule: equal^ assignment ;

so I changed back to

assignment_rule : ^(equal assignment) ;

the problem fixed.





regards;

Peizhao


Gavin Lambert wrote:
> At 18:03 19/10/2007, Peizhao Hu wrote:
>  >Could anyone tell me what is the following error message about?
>  >I checked the parser and tree grammar without any error or warning
>  >message.
>  >
>  >Not sure about the ruleRefRuleRoot.st??
>  >
>  >
>  >[15:00:24] error(10):  internal error:
>  >/Users/phu/programming/Autonomic_CMS_Repository/antlr-grammars/TEDS
>  >templateWalker.g
>  >: java.lang.IllegalArgumentException: Can't find template
>  >ruleRefRuleRoot.st
> 
> Usually these kinds of errors occur when you've got some kind of illegal 
> syntax in your grammar.
> 
> I *think* this one is where you've mixed an AST rewrite with a ^-flagged 
> left half.  (Or possibly it's the one where a rewrite is mixed with a !, 
> but I think that one mentioned a different template.)
>