provide an API to get jvm names

[yigit]

For internal methods fields etc, Kotlin renames the element during compilation.

This becomes a problem in Room where we need to override / implement an internal class/field/method and we don't know the exact name.

For instance, for the following code: full source

abstract class MigrationDbKotlin : RoomDatabase() {
    internal abstract fun dao(): MigrationDao
}

Room needs to generate MigrationDbKotlin_Impl and override dao method but we need to rename it to the JVM name (because room generates java code). In this particular case, the name we need is dao$room_testapp_kotlin_debug(). I'm not sure how kotlin calculates it but seems like it is coming from the project setup.

Would be great to have an API to do this conversion.

[yigit]

similar to this, i think it would be nice to have a method to get the name for property getters/setters.
It is possible to implement without KSP supporting it (https://kotlinlang.org/docs/reference/java-to-kotlin-interop.html#properties) but would be nice to have it out of the box for ease.

[yigit]

I have a prototype for this:
https://github.com/yigit/ksp/tree/mangled-names

An interesting part is that, we do actually have a very similar method: mapToJvmSignature except it is just the signature, does not include the method name. (also doesn't support property getters/setters which could be added)

I'm wondering, maybe it makes sense to change that to return a class that will have the information in the asm method, that would also fix this functionality. One downside of it is of course it is more expensive to calculate the whole signature when you just need the name.