[antlr-interest] Tree generation qestion

[Micheal J]

> Code generated by the attached grammar only produces a
> root StatementList node contains an empty list of
> Statement. After remove ! from end of 
> "statementList", desired result got. Is this normal?

Yes. "!" means don't generate standard tree creation code. You now have to
provide that yourself. For statementList, you should leave it out.

> While the following grammar works well.
> 
> formalList!
> 	:
> 	 (formal ( COMMA! formal)* { ## = 
> #(#[FORMAL_LIST,"FORMAL_LIST"],##); })?
> 	;

Strange. This should give the root node only as well.


Micheal