[antlr-interest] Re: nested return statements
genericised
trigonometric at softhome.net
Sun Aug 18 12:08:38 PDT 2002
thanks.
--- In antlr-interest at y..., Ric Klaren <klaren at c...> wrote:
> 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 c... ----- +31 53 4893722 ----
> -----
+++++*****************************************************+++++++++---
----
> Chaos always defeats order because it is better organized.
> --- Terry Pratchet
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