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?
Cheers,
Manuel
