[ragel-users] One question.
Gordeev Vladimir
gordeev.vladimir.v at gmail.com
Wed Mar 30 04:38:09 UTC 2011
Hm, this looks like solution. I will try it. Thanks.
Related question: Does Ragel have some inner stack to handle nested
fcall/fret?
On 30.03.2011 00:59, Nate wrote:
> You can use fcall to jump to a machine, then fret to resume where you
> were. It's a bit tricky, but once you understand it you can parse
> recursively. See the startTable action here (though this is a pretty
> hairy parser):
> http://code.google.com/p/table-layout/source/browse/trunk/build/TableLayoutParser.rl
>
> -Nate
>
>
> On Tue, Mar 29, 2011 at 2:55 PM, Jonathan Castello <twisolar at gmail.com
> <mailto:twisolar at gmail.com>> wrote:
>
> On Tue, Mar 29, 2011 at 1:15 PM, Gordeev Vladimir
> <gordeev.vladimir.v at gmail.com
> <mailto:gordeev.vladimir.v at gmail.com>> wrote:
> > So I got following error:
> >
> > test.rl:7:32: graph lookup of "list" failed
>
> The reason you get that error is because a rule can only reference
> definitions that came before it. "list" doesn't exist until the
> definition is finished, so it can't reference itself. (That would
> create a recursive structure anyways, which Ragel isn't equipped to
> handle natively.)
>
> ~Jonathan
>
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