On Sat, Mar 14, 2015 at 3:14 PM, Максим Суслов <[email protected]> wrote:
> My goal is create rule "peep", which allow to see current parse tree for
> any rule. To use it you shall append "action => peep" and see how parse
> tree looks, but don't change parse tree itself. Code
>
> sub MyActions::peep {
> print "peep:\n";
> print Dumper(\@_);
> return \@_;
> }
>
> allows to see parse tree fragment, but it changes that tree: results with
> action "peep" and without are differrent.
>
> > you can create a generic peep_seq() using a context variable to get the
> rule ID
> Sounds as possible solution, but I don't know get current rule ID inside
> an action. Can you help me?
>
$Marpa::R2::Context::rule can be used for this --
https://metacpan.org/pod/distribution/Marpa-R2/pod/Semantics.pod#Action-context
>
> Thank you in advance,
> *Maxim Suslov*.
>
>
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