> On 23 Nov 2018, at 13:40, Manuel Leuenberger <leuenber...@inf.unibe.ch> wrote:
>
> Hi,
>
> I stumbled upon another MetaLink scenario that I am unsure how to implement.
> I want to track method invocations, with receiver, arguments, selector, and
> return value (maybe even signaled exception). I can track the method input
> with a MetaLink installed on an RBMethodNode like this:
>
> MetaLink new
> metaObject: [ :c | Transcript show: c receiver; show: c method selector;
> show: c arguments; cr ];
> selector: #value:;
> arguments: #(context).
>
> and for returns with a MetaLink on RBReturnNodes like this:
>
> MetaLink new
> metaObject: [ :v | Transcript show: v; cr ];
> selector: #value:;
> arguments: #(value)
>
> The problem is though, that not all methods have explicit returns, and some
> mix explicit returns and self returns. I tried installed an #after MetaLink
> on a RBMethodNode, but this fails in many cases. Is there any way that I can
> instrument a method and track receiver, selector, arguments, and returned
> value (even if self) at the same time?
>
I am working now on making the #after work so that one can get with #value the
return of the method…
I now have a version where it works for Message Sends correctly *and* were
#after on Method works better (the compilation errors should be fixed).
But #value for #after on Method needs some more work… soon!
I will commit this intermediate step now.
Marcus
