Am 22.06.2011 um 11:38 schrieb Nicola Pero:
>> But I suppose the answer is again, I need two function calls for my purpose
>> in the GNU runtime.
>
> Yes. I guess what you really want is a variant of
> class_getMethodImplementation() which returns
> NULL (instead of a forwarding function) if the method is not implemented
> directly by the class.
> But there is no such variant. ;-)
>
Ok, thanks for the clarification. It's no problem, it's just good to know to
make a decision how to rewrite the code.
> Any particular reason you need to make a difference between forwarded and
> non-forwarded methods ?
Calling the forward IMP directly uglies the stacktrace in gdb at least on OS X
(and at least at the time I wrote the code), which was too confusing in the
long run.
I am not much a fan of lots of #ifdefs in my real code, what I need to rewrite
is something like
imp = (*context->lookup)( thisIsa, context->sel);
if( imp == MulleObjCMsgForward)
imp = MulleObjCMsgSend;
(where MulleObjCMsgForward == _objc_msgForward and MulleObjCMsgSend ==
objc_msgSend)
I tried to replace MulleObjCMsgForward and MulleObjCMsgSend with GCC runtime
stuff, which I assumed at the time of writing, was basically just the same. But
I suppose I will just lift the three lines into a small (inline) C function and
that will be equally fine.
There is just lots of these kinds of lines in my code, and I wanted to save
some typework if possible. Typework, coming to think of it, which I now spent
on mailing list posts :)
Ciao
Nat!
------------------------------------------------------
I suppose I live in a fantasy world, but at least they
know me there. -- DLR
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