another question: external C library defines a pro...

# kotlin-native

[ivan.savytskyi]

another question: external C library defines a protocol that KN class implements class MyFooModule : NSObject(), FooModuleProtocol {. But this information is erased @interface MyFooModule : KotlinBase in the result generated header file. How to make header file to look like this @interface MyFooModule : KotlinBase <FooModule>?

[Kris Wong]

classes that inherit from Obj-C classes are unavailable in the resulting framework

[Kris Wong]

__attribute__((unavailable("Kotlin subclass of Objective-C class can't be imported")))

[Kris Wong]

I worked around this by creating top-level functions for working with these objects, but it makes for a bad API, so I wouldn't use it more than absolutely necessary

[ivan.savytskyi]

I saw that attribute generated only when inherited from NSObject only but if it implements some protocol and inherited from NSObject I don't get this unavailable attribute. The issue is that protocol is erased from the generated header.

[Sam]

There is experimental support for generics that can be turned on by adding freeCompilerArgs.add("-Xobjc-generics") to your framework declaration in your gradle script. Beware that Kotlin, ObjC & Swift all have different ideas about generics. There will be some use cases that aren't possible to implement easily or at all.

[Kris Wong]

doesn't seem like this has anything to do with generics?

[Sam]

You're right. I tripped over the <> which my tired brain read as talking about generics.