The Kotlin compiler uses PSI classes too, don’t it...

# compiler

[hfhbd]

The Kotlin compiler uses PSI classes too, don’t it? So how does the Kotlin compiler create the psi classes? Do you really run a headless IntelliJ instance? The custom language plugin tutorial and its parsers heavily based on virtual files and IntelliJ project service 🤔

[shikasd]

In a way, yes
It is a bit cheaper than "headless" IntelliJ, just uses the same components

[hfhbd]

Do you have a sample/link which components are used? At the moment I run the whole instance.

[shikasd]

i believe it is intellij-core artifact, but not exactly sure

[hfhbd]

Thanks, found the environment: https://github.com/JetBrains/kotlin/blob/8566589cf50cbd725305fc86eb5fa8b25560427e/compiler/cli/src/org/jetbrains/kotlin/cli/jvm/compiler/KotlinCoreEnvironment.kt