On 9 Mar 2008, at 19:18, Stuart Malin wrote:
Thanks Jon and Shem. I spaced out the existence of _cmd and was
unaware of __func__
As I best understand their distinction:
__func__ is generated at compile time (a C-string)
_cmd is part of the Obj-C runtime (a SEL)
Since I am writing a new method, I can accomplish my goal by passing
either _cmd or __func__.
BUT, just out of intellectual curiosity (and possible future need),
what if I have existing callers and can't modify their code to pass
either of these -- can I still get the identity of the invoking
method in my method?
Of course, that would be objc_msgSend. So... the one before that?
Which leads back to the stack.... and method signatures and frame
lengths, and ... I think I'm over my head.
Is there something else simple that I've missed? Or there is
documentation somewhere on these mechanics that I should be reading?
Nothing you've missed, there really is no simple way to find this
information out without delving into the stack. However, trying to do
this is a pretty bad idea on the whole anyway; code that depends on
specific other methods calling it like that is probably going to be
rather fragile and suggests a weakness in the design.
Mike.
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