[antlr-interest] Unanswered FAQ question: how to handle multiple return values?
Ric Klaren
klaren at cs.utwente.nl
Wed May 15 04:35:20 PDT 2002
On Wed, May 15, 2002 at 12:40:50AM -0000, jsrs701 wrote:
> There's a FAQ question that I suddenly am very interested in. :)
>
> http://www.jguru.com/forums/view.jsp?EID=305752
For some vague reason jguru doesn't show a reply button :P
> "ANTLR allows to specify multiple return values for a rule. What is
> the syntax to get those from a subrule? In PCCTS rule specifikation
> and usage looked the same: rule > [ret1,ret2] How do I express this
> with ANTLR 2.*?"
>
> Anybody know how to handle this? Besides you, Ter? I would hope you
> already know the answer to this. :)
Think this is a documentation bug. Not 100% sure though, I really cannot
recall anything in the codegenerators that would support this.
In C++ I'd use a 'tuple' class like provided by the boost library
(www.boost.org).
Cheers,
Ric
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