Define StringDef in kotlin

Question

I'm trying to define a StringDef in kotlin:

@Retention(AnnotationRetention.SOURCE)
@StringDef(NORTH, SOUTH)
annotation class FilterType {

    companion object {
        const val NORTH = "NORTH"
        const val SOUTH = "SOUTH"
    }
}

I think something is wrong in the code above.

// I can send anything to this method, when using my kotlin stringDef
private fun takeString(@DirectionJava.Direction filterType: String) {

I want the kotlin equivalent of the java below:

public class DirectionJava {

    public static final String NORTH = "NORTH";
    public static final String SOUTH = "SOUTH";

    @Retention(RetentionPolicy.SOURCE)
    @StringDef({
            NORTH,
            SOUTH,
    })
    public @interface Direction {

    }
}

Calling the java defined StringDef works from kotlin

// This works as expected, the Java-written string def 
// restricts what I can pass to this method
private fun takeString(@DirectionJava.Direction filterType: String) {

Where have I gone wrong, how do you define a StringDef in Kotlin?

Answer 1

According to jetbrains issue, Lint check plugin for enumerated annotations in kotlin is under development and is not stable yet. Checking android support annotations such as @Nullable, @StringRes, @DrawableRes, @IntRange, ... (which are written in java) works fine and user defined enumerated annotations are not checked properly. So, it seems that we should define them in java then use in kotlin.