Add Swift UIKit utils cinterop support for iOS

[Vendula Švastalová (svastven)]

Adds a separate CMPUIKitSwiftUtils static library alongside the existing Objective-C CMPUIKitUtils library, so Swift-only iOS APIs can be exposed to Kotlin/Native through an Objective-C-compatible generated Swift header.

Fixes CMP-10497 [iOS] Add Swift UIKit utils cinterop support

Release Notes

N/A

[Vendula Švastalová (svastven)]

IMO we can rename this target to CMPUIKitObjcUtils

[Andrei Salavei (ASalavei)]

Let's rename it right away!

[Andrei Salavei (ASalavei)]

TBH, I would love to see at least one simple swift class + simple Kotlin test to ensure the interop works.

[Vendula Švastalová (svastven)]

test added to iosTest

[Andrei Salavei (ASalavei)]

Vendula Švastalová (@svastven) , could you please also verify (or confirm that you did it) that compose is still compiles and can be used is CMP project. To verify so, you need:

• Create Swift class in the CMPUIKitSwiftUtils
• Use it somewhere from Kotlin (like `ComposeSceneMediator)
• Publish Compose to maven local
• Use this version of Compose from the CMP project from Wizard.

[Vendula Švastalová (svastven)]

Andrei Salavei (@ASalavei) I have confirmed that using Swift class from CMPUIKitSwiftUtils inside Kotlin works - I have tried in ComposeSceneMediator. I have not tried to publish and use it in a new project. I can check that.

[Andrei Salavei (ASalavei)]

Andrei Salavei (Andrei Salavei (@ASalavei)) I have confirmed that using Swift class from CMPUIKitSwiftUtils inside Kotlin works - I have tried in ComposeSceneMediator. I have not tried to publish and use it in a new project. I can check that.

Yes please check that. Need to ensure that all required compiler/linker flags correctly propagated to the final user's projects. Would be great to test that project with Debug mode runns on simulator/device as well as Archive project for iOS device target.

[Vendula Švastalová (svastven)]

Need to ensure that all required compiler/linker flags correctly propagated to the final user's projects. Would be great to test that project with Debug mode runns on simulator/device as well as Archive project for iOS device target.

I published a dev Maven build with temporary test logging added in ComposeSceneMediator.init

val box = CMPUIKitSwiftInteropBox(seed = 7)
val interop: CMPUIKitSwiftInteropProtocol = box
println("CMPUIKitSwiftInterop: ${interop.seed()}, ${box.seed()}")
println("CMPUIKitSwiftInterop: ${interop.combinedValueWithSuffix("swift")}, ${box.combinedValueWithSuffix("kotlin")}")

, which uses types from CMPUIKitSwiftUtils (similar to the test in this PR swiftImplementationIsAvailableThroughObjcInterop). I then integrated this build in a newly generated app from Wizard. I validated that the app was built successfully, launched successfully, and emitted the expected logs. This should confirm that the required compiler/linker flags are propagated to the final consumer project. Archive was also successful.

[Igor Demin (igordmn)]

Vendula Švastalová (svastven) requested a review from Igor Demin (igordmn) 21 minutes ago

The build changes LGTM. If you don't need from me to look at the rest of the code, it is good to merge