Question

The Objective C runtime reference has the function class_getSuperclass for getting the superclass of a class. Is there anything similar for listing the direct ancestors of a protocol?

Answer 1

There’s no such thing as ancestors, since protocols expand rather than inherit, hence you should look for siblings. The closest thing that I can give you is:

1. Get the list of protocols with objc_protocol_list
2. Check if protocol conforms to protocol with protocol_conformsToProtocol

update it seems i didn’t rtfm enough. Here’s the proper method:

protocol_copyProtocolList, which is described as

Returns an array of the protocols adopted by a protocol.