Re: [Pyobjc-dev] Some PyObC tweaks for using EOF and custom frameworks

[b.bum <bb...@ma...>]

On Sunday, August 10, 2003, at 12:07, Ronald Oussoren wrote:
> If all 'unvalidated' objects are an instance of EOFault we could try 
> to add a category on that class. That would have to be implemented in 
> a seperate C module, the code fragment below failed to compile when I 
> added this to objc_support.m:
>
> 	@class EOFault;
> 	@interface EOFault (PyObjCSupport)
> 	-(PyObject*)__pyobjc_PythonObject__;
> 	@end


Actually, this could be done from the Python side via the 
addClassMethod API in the objc module -- or, at the least, that code 
can be used as a model for implementing this without using a category.  
It would allow the method to be added to a class conditioned on whether 
or not the class exists.

If __pyobjc_PythonObject__ as implemented on NSObject will "just work", 
then there is no need to provide an alternative implementation:

% python
Python 2.3b1 (#1, Jul 27 2003, 10:44:20)
[GCC 3.3 20030304 (Apple Computer, Inc. build 1481)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
 >>> import objc
 >>> from Foundation import *
 >>> x = NSBundle.mainBundle()
 >>> x.description()
u'NSBundle </usr/bin> (loaded)'
 >>> objc.classAddMethods(NSBundle, [NSObject.description])
 >>> x.description()
u'<NSBundle: 0x35b120>'