I will!

# multiplatform

[tony]

I will!

[tony]

I have another question

I have a compilation, jvmTest

compilation.allKotlinSourceSets

I would expect that to include commonTest, but it only includes a single source set, jvmTest. But I know (right?) that commonTest is a dependency of jvmTest. So why is allKotlinSourceSets not showing that?

Maybe more generally, is there a way to get, via an API, all the source sets involved in any single compilation?

[tony]

I can see in the docs that those source sets are connected. I also verified by adding a class with the same fully-qualified name to both commonTest and jvmTest => there was a compilation failure due to the Redeclaration.

So, I can just assume that there's a relationship due to the special nature of these default source sets and compilations, but it would be preferable to query an API, if it exists

[tony]

I'd also like to be able to access generated source via supported APIs. I have source gen working such that compiling code will run my source gen task, but then I am not quite sure how I'd access all sources, included generated sources. This is fairly straightforward to do with the standard Gradle SourceSet APIs

abstract class SourceGen : DefaultTask() {

  @get:OutputDirectory abstract val output: DirectoryProperty

  @TaskAction fun action() {
    val outputDir = output.get()
    val file = outputDir.file("foo/Foo.kt").asFile
    file.parentFile.mkdirs()

    file.writeText(
      """
        package foo
        
        class Foo
      """.trimIndent()
    )
  }
}

val sourceGen = tasks.register<SourceGen>("sourceGen") {
  output.set(layout.buildDirectory.dir("gen"))
}

kotlin {
  sourceSets {
    commonMain {
      kotlin {
        srcDir(sourceGen.flatMap { it.output })
      }
    }
}

and with that code above, compiling my jvmMain source will result in the sourceGen task running and adding that generated source to the commonMain source set

[tony]

ahh I was able to access the generated sources by passing in the sourceSet.kotlin.sourceDirectories directly as the task input, rather than sourceSet.kotlin.sourceDirectories.asFileTree.files, so that's all good now