[antlr-interest] Re: nested return statements
Ric Klaren
klaren at cs.utwente.nl
Fri Aug 16 02:08:09 PDT 2002
On Thu, Aug 15, 2002 at 03:26:55PM -0000, genericised wrote:
> Here is an attempt to clarify my last post:
>
> How can I make a parser rule so that I can use nested return
> statements like this:
>
> blah returns[String s]
> : String p = (blah2)+
> { s=p; }
> ;
>
> blah2 returns[String s]
> : i:(INT)
> { s=i.getText(); }
> ;
declare variables that should live the whole rule in the init action. Then
just append to it.
blah returns [String s = new String()] { String t; }
:
( t=blah2 { s += t; } )+
;
blah2 returns [String s = new String()]
:
i:INT { s += i.getText(); }
;
Advance apologies for any java mistakes it's not my native language ;)
We do have documentation and examples where this kindoff stuff is
explained. And yes the documentation is fragmented/non-ideal/scattered etc.
HTH
Ric
--
-----+++++*****************************************************+++++++++-------
---- Ric Klaren ----- klaren at cs.utwente.nl ----- +31 53 4893722 ----
-----+++++*****************************************************+++++++++-------
Chaos always defeats order because it is better organized.
--- Terry Pratchet
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