Callback delegates and run loops.

[loftafi]

I was looking for the best way to integrate the macOS bluetooth API with Zig and stumbled across your project here. It looks great, thanks for sharing it.

To use the Bluetooth API you need to start a CFRunLoop and register for callbacks such as:

peripheralManager = [[CBPeripheralManager alloc] initWithDelegate:de queue:nil];
centralManager = [[CBCentralManager alloc] initWithDelegate:de queue:nil];
CFRunLoopRun();

- (void)centralManagerDidUpdateState:(CBCentralManager *)central {
   //
}
- (void)centralManager:(CBCentralManager *)central didDisconnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error {
    //
}

I don't see any examples/tests in your source that indicate if this might or might not be possible, I am guessing it is not. But I thought I would ask here just in case it might be.

[Nirlah]

This what generally how I do it.
Note that this is a quick example I written without validating, so it may have some issues to hammer down...

// Create a new class declaration
const class = objc.allocateClassPair(objc.getClass("NSObject"), "MyDelegate").?;

// Register a method conforming to the protocol
_ = class.addMethod("foo:bar:", myHandlerFn);

// Optionally, explicitly mark the new class for conformance
const protocol = objc.getProtocol("SomeDelegateProtocol").?;
_ = objc.c.class_addProtocol(self.class.value, protocol.value);

// Finalize the class declaration
objc.registerClassPair(class);

After that, you can use the new class the same way you use any other class.