Re: Discovery from class-dumping Yosemite system libraries.

[ChanMaxthon]

Is making frameworks source compatible interoperability?

Sent from my iPhone

> On Apr 8, 2015, at 18:16, Gregory Casamento <address@hidden> wrote:
> 
> Chan,
> 
> In the interest of being cautious, please, in the future, I would
> prefer that you do NOT post reverse engineered information to this
> list.    In the US such information is okay to use for the purposes of
> interoperability, but it becomes of questionable legality given that
> there are people on this list who are not in the US and local laws in
> their countries may vary.
> 
> Thanks, GC
> 
> 
>> On Wed, Apr 8, 2015 at 6:11 AM, ChanMaxthon <address@hidden> wrote:
>> I class-dumped Apple's system libraries and discovered this:
>> 
>> NSObject is implemented in libobjc.dylib, despite header appeared in 
>> Foundation.framework
>> 
>> NSArray and friends, Objective-C classes that is toll-free bridged to 
>> CoreFoundation types, are implemented in CoreFoundation.framework, despite 
>> header appeared in Foundation.framework
>> 
>> CF types does have a one-to-one mapping to internal Objective-C classes, 
>> being subclasses of respective public umbrella classes or _NSCFType class 
>> for non-TFB types. This suggests that the polymorphic CoreFoundation 
>> functions maps to Objective-C methods on NSObject.
>> 
>> Apple did not make NSSet/CFBag and NS/CFRunLoop TFB but we can make that 
>> happen without breaking Apple's interface contracts.
>> 
>> Sent from my iPhone
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> 
> 
> 
> -- 
> Gregory Casamento
> GNUstep Lead Developer / OLC, Principal Consultant
> http://www.gnustep.org - http://heronsperch.blogspot.com
> http://ind.ie/phoenix/