Hi all, I'm creating a compiler plugin and for some scenarios I want to report some warning / error ...

# compiler

[bloder]

Hi all, I'm creating a compiler plugin and for some scenarios I want to report some warning / error diagnostics, with them I would like to make the IntelliJ IDE visually underline certain expression with the warning / error inspections (the yellow and red line). I'm being able to report diagnostics correctly using a FIR extension but no success with the IntelliJ IDE visual inspection part, this warning / error inspection is supported by Kotlin compiler plugins (if so, could you provide me an example?) or should I create an IntelliJ IDEA plugin to make this IDE part?

[Youssef Shoaib [MOD]]

I believe this should work as long as you turn on K2 mode in IDEA

[bloder]

@Youssef Shoaib [MOD] Do you have an example of a compiler plugin doing that? Even enabling K2 mode in the IDEA not appearing the inspections. Maybe I'm doing something wrong in the code

[raulraja]

I believe https://github.com/JavierSegoviaCordoba/kopy by @Javier does that kind of reporting with checkers https://github.com/JavierSegoviaCordoba/kopy/blob/725a943a3b301595067a30795d2e40024024e83b/kopy-compiler/main/kotlin/com/javiersc/kotlin/kopy/compiler/fir/checker/checkers/FirKopyExpressionCheckers.kt#L72

[Javier]

https://kotlinlang.slack.com/archives/C03PK0PE257/p1724005459312539?thread_ts=1723996289.489159&channel=C03PK0PE257&message_ts=1724005459.312539

[Javier]

Have you enabled K2 and third party plugins on the IDE? Check the instructions on the readme of Kopy

[bloder]

@raulraja @Javier Thank you for the help, I hadn't tried to disable kotlin.k2.only.bundled.compiler.plugins.enabled
By doing that now I'm seeing this IDE internal error

java.lang.NoClassDefFoundError: org/jetbrains/kotlin/com/intellij/psi/PsiElement Did you face this problem when working on Kopy?

[Javier]

No, it is weird, looks like a basic dependency. Are you using the template for compiler plugins?

[Javier]

https://github.com/demiurg906/kotlin-compiler-plugin-template

[bloder]

Fixed that issue, that was happening because I was trying to report the diagnostic on top of something that wasn't a PsiElement. It's working now but for some reason the IDEA takes a long time to update the error / warning inspections in the code