I see that "if" expressions are represented as "when" expressions in FIR. I'm trying to distinguish ...

# k2-adopters

[Roman]

I see that "if" expressions are represented as "when" expressions in FIR. I'm trying to distinguish "else" branch in "if" expression. To do this I'm checking for instanceof FirElseIfTrueCondition. In result, I'm getting compilation error - java compiler cannot access FirElseIfTrueCondition class. This happens in both 1.9 and 2.0 Beta2.

java: cannot access org.jetbrains.kotlin.fir.expressions.impl.FirElseIfTrueCondition
  bad class file: /.../kotlin-compiler-2.0.0-Beta2.jar!/org/jetbrains/kotlin/fir/expressions/impl/FirElseIfTrueCondition.class
    undeclared type variable: T
    Please remove or make sure it appears in the correct subdirectory of the classpath.

Is there any other way I can check for "else" branch using K2 API?

[dmitriy.novozhilov]

Did you try to do the same using kotlin?

[Roman]

It works from kotlin, I can compile it with kotlinc

[dmitriy.novozhilov]

It's curios why it can't be loaded by javac

[dmitriy.novozhilov]

The reason is most likely KT-52706

[Roman]

So looks like the best way is to use K2 API from Kotlin rather than from Java, right?
What about checking for element.getSource() == null in this particular case? As a temporary solution.

[dmitriy.novozhilov]

So looks like the best way is to use K2 API from Kotlin rather than from Java, right?

Yes, it's better to use it from Kotlin

What about checking for element.getSource() == null in this particular case? As a temporary solution.

source is not reliable source of information
If you really want to stick with java you can use smth like that:

element.class.getName().equals("FirElseIfTrueCondition")

[Roman]

Thank you very much for the tip!