[antlr-interest] Newbie Question
Behdad Forghani
behdad.forghani at samsarasol.com
Mon Mar 16 16:01:20 PDT 2009
Hello,
I am trying to built AST from a rule with an optional part.
The rule is:
type :
builtinType constraint?;
I want the constraint node to be the child of builtinType. So, I add:
type :
builtinType constraint?->^(builtinType constraint?);
I also tried:
type :
builtinType ^ constraint?;
But, none of them seem to work. Can you tell me what I am doing wrong?
Thanks
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