Re: [Pyobjc-dev] posing

[Ronald O. <ous...@ci...>]

On Saturday, Jan 18, 2003, at 01:52 Europe/Amsterdam, bb...@ma... 
wrote:

> I committed a test case that tests if poseAsClass: allows a Python 
> implemented subclass of an Objective-C object to pose as the 
> Objective-C superclass.
>
> It currently doesn't because Python based subclasses of Objective-C 
> classes *always* add at least one instance variable.  Causes a fatal 
> error.
>
> Specifically (from class-builder.m):
>
> /* We add 1 instance variable to hybrid objective-C/Python classes, 
> this
>  * contains the reference to the python half of the class. Name should 
> be
>  * not be used by Objective-C classes that are not managed by PyObjC...
>  */
> static char pyobj_ivar[] = "__pyobjc_obj__";
>
> I'm going to try modifying the way this all works a bit.  Specifically:
>
>     - add the method +(BOOL)__pyobjc__hasPythonImplementation to 
> NSObject;  returns NO.
A -(PyObject*)__pyobjc_pythonImplementation is probably more usefull in 
the long run (return NULL in NSObject, the equivalent of the current 
self.__pyobjc_objc__ in mixed classes and the bridged python object in 
OC_PythonObject and friends)

Ronald