How to call enumValues of unknown enum e: KClass<Enum>

Language Design
1

I have variable unknownEnumClass: KClass<Enum<*>>. How I can get their values?
I can not use kotlin.enumValues() function, because it has reified parameter.
In other words, I want to get a normal analog:

fun unknownEnumValues(unknownEnumClass: KClass<Enum<*>>): Array<Enum<*>> {
    @Suppress("UNCHECKED_CAST")
    return unknownEnumClass.java.getMethod("values").invoke(null) as Array<Enum<*>>
}
2

Maybe this is what you are looking for?

import kotlin.reflect.KClass

fun main(args: Array<String>) {
    println("Vowels")
    getEnumValues(Vowel::class).forEach { print("$it ") }
    println()
    println("Roman Numerals")
    getEnumValues(RomanNumerals::class).forEach { print("$it ") }
}

//sampleStart
fun getEnumValues(enumClass: KClass<out Enum<*>>): Array<out Enum<*>> = enumClass.java.enumConstants
//sampleEnd

enum class Vowel { A, E, I, O, U }
enum class RomanNumerals { I, V, X, L, C, D, M }
3 Likes
3

Thank you.

4

SaclCastellon’s answer is a JVM specific one.

Since there is a multiplatform enumValueOf(value) method in the standard lib, is there a way to achieve the same thing (aka get an enum value from a KClass<E:Enum> and a string) in multiplatform code?

5

I think this is being tracked in https://youtrack.jetbrains.com/issue/KT-14743