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TreeNodes are generated for types that aren't actually components

See original GitHub issue

I’m not sure if this is actually a bug so feel free to correct me. I noticed that treehouse is generating TreeNodes for enums even when they’re not supposed to be used like a component in the view hierarchy. Here’s an example from Cash App:

// Enum:
data class DialogAction(...) : Action() {
  enum class ButtonStyle {


// Generated code:
public interface ButtonStyle<T : Any> : TreeNode<T> {
  public override fun apply(diff: PropertyDiff): Unit {
    when (val tag = diff.tag) {
      else -> throw IllegalArgumentException("Unknown tag $tag")

The generated node also becomes part of the NodeFactory. Other examples in our project include BoxLayout, BoxLayoutDirection, and BoxLayoutItem which are all inner classes of Box. Is this expected?

Issue Analytics

  • State:closed
  • Created 2 years ago
  • Comments:9 (4 by maintainers)

github_iconTop GitHub Comments

saketcommented, Apr 7, 2021

I like it!

JakeWhartoncommented, Apr 7, 2021

I’m moving the parser into its own module. Hold off for now.

@Node becomes @TypeId, but I was mulling @EntityId instead yesterday…

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