I am generating some Kotlin code using KotlinPoet. How would I best mark the target directory as a c...

# build-tools

[diesieben07]

I am generating some Kotlin code using KotlinPoet. How would I best mark the target directory as a code-source using Gradle?
The following works, but marks the directory as a regular source root in IntelliJ, instead of "Generated Sources Root"

sourceSets {
    main.kotlin.srcDirs += 'generated/kotlin'
}

[udalov]

Maybe using the idea plugin like this (but I haven't tried this and don't really know if it works)?

apply plugin: 'idea'

idea {
    module {
        generatedSourceDirs += file('generated/kotlin')
    }
}

From https://docs.gradle.org/current/dsl/org.gradle.plugins.ide.idea.model.IdeaModule.html

[diesieben07]

Wouldn't that only add the directly to IDEA? And not add it as a source for gradle?

[udalov]

Right. Looks like I misunderstood what you’re looking for :(

[diesieben07]

No worries, all good.

[artem_zin]

What if you mix both options?

[Vladyslav Sitalo]

hey, did you figure this one out btw?

[diesieben07]

I took a break from this project for a while and no, I did not. I am using kapt at the moment which makes this problem go away, but surfaces others.

[Vladyslav Sitalo]

Are you doing the annotation processing or some other type of code generation?
I’m looking into non-annotation processing code generation atm (the input for generator is a json model) and I can’t quite figure out if kapt would work for me in this scenario.

[diesieben07]

I am doing annotation processing. I don't think you need kapt if you don't need access to the existing source code. Just write a normal kotlin program using Kotlin Poet.

[Vladyslav Sitalo]

Yeah, that’s what I’m doing, the problem I’m trying to solve now is delivery i.e. I want clients of the library to add dependency on generator do something like

generator {
  model_path "/path/to/model"
  target_package "'org.package"
}

in their gradle config and get the model processed properly, code generated and put into the generated source/etc. So I want gradle plugin of kapt and not the annotation preprocessing 🙂 Otherwise I’d need to write my own gradle plugin or something like that, as I understand..

[diesieben07]

Yeah, you'd need to write your own gradle plugin.

[Vladyslav Sitalo]

btw, I think https://docs.gradle.org/current/dsl/org.gradle.api.tasks.SourceSetOutput.html answers your original question here

[Vladyslav Sitalo]

didn’t manage to make it work for Kotlin code 😞