Re: Toll-free bridge type at runtime
Re: Toll-free bridge type at runtime
- Subject: Re: Toll-free bridge type at runtime
- From: Ryan Joseph <email@hidden>
- Date: Fri, 3 Apr 2009 10:22:45 +0700
On Apr 3, 2009, at 10:11 AM, Michael Ash wrote:
The wrapper is simply a Pascal object that encapsulates a Cocoa
object. The
underlying object is exactly the same as it appears in Cocoa,
except it's
accessed via Objective-C runtime functions. The fact it's a
"wrapper" is
really not important, I will be testing a CF type or the underlying
Cocoa
object.
I'm prepared to abandon this if it's going to dangerous, it would
just be
nice if users didn't have to choose manually. Thanks.
I'm not sure what you mean by a "wrapper" here. Is this just a custom
Objective-C class? If so, then you can just test using Objective-C
introspection methods, like -isKindOfClass:
if([array isKindOfClass:[YourPascalWrapperClass class]])
...it's your wrapper...
else
...don't do anything funny...
The "wrapper" is a Pascal class that controls an Objective-C object,
so we can't use introspection on it. The plan was to determine if a
pointer was a CFType then use it directly with the Objective-C
runtime, otherwise dereference it to get the Objective-C object and
use that instead. This is all a measure so users don't have to make
this choice themselves. If I could differentiate a Pascal object from
a plain Pointer it would serve the same purpose but I thought a
NSArray and CFArray were testable. I think it's safe to say this test
can not be performed based on what Greg Parker said.
Regards,
Josef
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