Re: [Pyobjc-dev] aspect/advice -- wrapping methods

[Ronald O. <ron...@ma...>]

This one actually works:

def addTracing(method):
     origFunction = method.definingClass.instanceMethodForSelector_ 
(method)

     def wrapper(self, *args):
         print "HERE!",self, args
         return origFunction(self, *args)

     setattr(method.definingClass, method.__name__.replace(':', '_'),  
wrapper)


Ronald

On 16-apr-2006, at 14:17, ytrewq1 wrote:

> Thanks for the suggestion.  I tried it out and encountered a few  
> issues so
> I tried the following modified version, but now I encounter  
> application
> crashing:
>
> def addTracing(method):
>     cls = method.definingClass
>     nm  = method.selector.replace(':', '_')
>     origMethod = cls.instanceMethodForSelector_(nm)
>     def wrapper(self, *args):
>         print self, args
>         return origMethod(self, *args)
>     setattr(cls, method.__name__, wrapper)
>
> In one crash, I noticed the following sort of output in Console.app:
>
> An uncaught exception was raised
> exceptions.RuntimeError: maximum recursion depth exceeded
> *** Uncaught exception: <OC_PythonException> exceptions.RuntimeError:
> maximum recursion depth exceeded
>
> Does it look like I made inappropriate modifications?
>
> On 4/16/06, Ronald Oussoren <ron...@ma...> wrote:
>>
>> Something like this should do it:
>>
>> <warn>This code was typed in the browser</warn>
>>
>> def addTracing(method):
>>      cls = method.im_class
>>      nm  = method.sel_selector
>>
>>      origMethod = cls.instanceMethodForSelector_(nm)
>>
>>      def wrapper(self, *args):
>>          print self, args
>>          origMethod(self, *args)
>>
>>      setattr(cls, method.__name__, wrapper)
>>
>> addTracing(NSObject.init)
>>
>> Ronald
>>