Re: CoreBase toll-free bridging

[Luboš Doležel]

On Fri, 15 Mar 2013 15:15:56 +0800, Maxthon Chan wrote:
> I think I scored one on suggesting implementing CF in ObjC here. :)

Well, I have my doubts about this claim. Especially because of

> > "If you look at the Darwin sources, you'll see that the iPhone's 
> > CoreFoundation classes are actually implemented in ObjC."

No iOS CF sources have been made public, so you can't just "look at 
Darwin sources".

And it doesn't really make much sense to me. Why?

1) Why bother developing, testing and maintaining a separate CF 
implementation when you can use the one you already have?
2) There is nothing stopping them using ObjC-based CF even on OS X. 
Carbon apps don't need to know/care if there is any ObjC behind the 
scenes. Just because your app is plain C doesn't meen that the libraries 
cannot internally use ObjC.

> There are very few iOS code available out there, so it is very
> difficult to hack into that.
>
> By the way, I do have an paid Apple iOS Developer account so maybe I
> can verify something for you? Maybe check iPhone's CF framework's
> symbol import?

If you can get me an ARM CoreFoundation binary, I can look into its 
code to see what it's doing. I wouldn't fully trust the imports alone.

--
Luboš Doležel