Annotation values that are default are not visible in KSP

[yigit]

When reading a Java annotation with default value, its value is not visible in the arguments list.

public @interface JavaAnnotation {
    String debug();
    String withDefaultValue()  default "";
}

If you annotate an element with JavaAnnotation and don't specify a withDefaultValue property, KSP processor threats it as not existing such that arguments map in KSAnnotation will only include debug field.

[neetopia]

android/kotlin#60 contains a partial fix. With that commit you will be able to see the name of the missing argument, but not able to find out the default value of that argument. Still working to find a solution to find the default value.

[yigit]

i think this bug might already be fixed?
https://android-review.googlesource.com/c/platform/frameworks/support/+/1513790 is passing.

[yigit]

actually nevermind, looks like it is still broken for defaults values w/ other annotations.

[neetopia]

Yes, it is broken for annotations declared in kotlin and then compiled.

[neetopia]

fixed in #528

[yigit]

Unfortunateely this still looks broken in beta07.
To reproduce, you can enable this line in the test in AndroidX

[neetopia]

fixed in #591

[elihart]

I think I ran into an edge case in 1.0 where, even with this fix, I get a null default value in the case where a class is defined within the annotation class.

Happens with both kotlin and java - here is a kotlin example.

annotation class Example(
    val classParam: KClass<*> = DEFAULT::class
) {
    object DEFAULT
}

Moving the object outside the annotation class fixes the problem

[neetopia]

is the above class from a compiled library?

[elihart]

Yes, the annotation class is defined in a compiled library.

[neetopia]

thanks, I'll create a separate issue to track.