workflow-kotlin: Kotlin IntelliJ plugin crashes on StatefulWorkflow and action builder

Good news, upgrading Android Studio to Kotlin plugin 1.4-M1 seems to fix the issue in our repro project (https://github.com/zach-klippenstein/repro-KT-34524). The kotlin file is parsed, the action {} builder is highlighted as missing and offered to be imported, and the uncommented prose is highlighted as invalid syntax. Haven’t tested with our big internal codebase yet, but this is a good step in the right direction!

We just heard from a contact at JetBrains that they’re aware of this issue and considering how to prioritize it. There’s maybe even a small chance it could be fixed in 1.3.70, but no guarantees.

But we’ll wind up needing two implementations of RenderTester. Yuck.

Maybe there’s a base context type they can share, and then the inner classes are little facades with the two workflow base classes.

abstract class AbstractRenderContext<P, S, O> { ... }

abstract class StatefulWorkflow<P, S, O, R>() : Workflow<P, O , R> {
  inner class RenderContext : AbstractRenderContext<P, S, O> { ... }
}

class StatefulRenderTester <P, S, O, R>: AbstractRenderContext<P, S, O> { }

abstract class StatelessWorkflow<P, O, R>() : Workflow<P, Unit, O , R> {
  inner class RenderContext : AbstractRenderContext<P, Unit, Nothing> { ... }
}

class StatelessRenderTester <P, O, R>: AbstractRenderContext<P, Unit, O> { }