[Xotcl] filters and next

[Andriy Tkachuk]

thank you very mutch!

andriy.

On Fri, 19 Apr 2002, Uwe Zdun wrote:

> Hi Andriy,
>
> this was a little bug. We have closed down the filter chain upon the "msg"
> method but the filter was not done with its own next. I'll attach an xotcl.c
> file that should fix the problem (the fix will also be in the next xotcl
> release ... but as this is a quite unusual case we don't produce a full patch
> release for this fix). Simply replace the xotcl.c file in the distribution
> and re-compile ...
>
> --uwe
>
>
> On Wednesday 17 April 2002 05:46 pm, Andriy Tkachuk wrote:
> > Hello! :)
> >
> > How it must works, when in pre/post part of filter
> > object calls his procs that calls next?
> > Situation like here:
> >
> > Class A
> > A instproc msg msg {
> >         puts "puts: $msg"
> > }
> >
> > Class B -superclass A
> > B instproc msg msg {
> >         next
> > }
> >
> > B instproc my_filter args {
> >         my msg "before next in filter"
> >         next
> > }
> >
> > B b
> >
> > b filter my_filter
> > b msg bb
> > puts: before next in filter
> >
> > that's all!: there is no "puts: bb".
> >
> > if filter like this:
> >
> > B instproc my_filter args {
> >         my msg "before next in filter"
> >         next
> >         my msg "after next in filter"
> > }
> >
> > then:
> > "too many nested calls to Tcl_EvalObj"
> >
> > Thank you.
> >
> > _______________________________________________
> > Xotcl mailing list  -  Xotcl at alice.wu-wien.ac.at
> > http://alice.wu-wien.ac.at/mailman/listinfo/xotcl
>

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