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Re: Replacement for descriptionForInstanceMethod:


From: Fred Kiefer
Subject: Re: Replacement for descriptionForInstanceMethod:
Date: Tue, 8 May 2018 18:42:52 +0200

You should have a look at GSProtocolGetMethodDescriptionRecursive in 
Additions/GSObjCRuntime.m. I think this should be able to provide the required 
functionality.

Hope this helps,
Fred

> Am 08.05.2018 um 17:49 schrieb Andreas Höschler <ahoesch@smartsoft.de>:
> 
> Hi all,
> 
> I used to do stuff like so
> 
>    struct objc_method_description *methodDescription = NULL;
>    methodDescription = [_protocol descriptionForInstanceMethod:aSelector];
>    if (methodDescription == NULL) methodDescription = [_protocol 
> descriptionForClassMethod:aSelector];
>    if (methodDescription != NULL) types = methodDescription->types;
> 
> using my ancient GNustep tree. This no longer works since [Protocol 
> descriptionForInstanceMethod:] got deprecated and no longer available. I 
> tried to replace this with (complete test code):
> 
> @protocol TestProtocol
> 
> - (void)doIt;
> 
> @end
> 
> Protocol * _protocol = @protocol(TestProtocol);
> SEL aSelector = @selector(doIt);
> struct objc_method_description _methodDescription = 
> protocol_getMethodDescription(_protocol, aSelector, NO, YES);
> if (_methodDescription.name == NULL) _methodDescription = 
> protocol_getMethodDescription(_protocol, aSelector, NO, NO);
> NSLog(@"_methodDescription.name %@", 
> NSStringFromSelector(_methodDescription.name));
> 
> but always get
> 
> 2018-05-08 17:43:02.800 AppbaseClient[37957:168060] _methodDescription.name 
> (null)
> 
> What am I doing wrong?
> 
> Thanks a lot,
> 
>  Andreas
> 
> 
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