I'm getting this error `Class 'ClassOutsideOfLibra...

# serialization

[jeggy]

I'm getting this error Class 'ClassOutsideOfLibrary' is not registered for polymorphic serialization in the scope of 'MyInterface'.
Is it any way possible to have an interface in my library and then have users of my library implementing this interface and then passing objects into my functions, where I then call encodeToString on this object they provided?

[jeggy]

Found a solution.

polymorphicDefaultSerializer(MyInterface::class) { obj: MyInterface ->
    object: SerializationStrategy<MyInterface> {
      override val descriptor = buildClassSerialDescriptor("test") {
        deliverable::class.memberProperties.forEach { field ->
          element<String>(field.name, field.annotations)
        }
      }

      override fun serialize(encoder: Encoder, value: MyInterface) {
        encoder.encodeStructure(descriptor) {
          obj::class.memberProperties.forEachIndexed { index, field ->
            when (field.returnType.toString()) {
              "kotlin.String" -> {
                val v = (field as KProperty1<MyInterface, String>).get(obj)
                encodeStringElement(descriptor, index, v)
              }
              "<http://kotlin.Int|kotlin.Int>" -> {
                val v = (field as KProperty1<MyInterface, Int>).get(obj)
                encodeIntElement(descriptor, index, v)
              }
              "kotlin.Boolean" -> {
                val v = (field as KProperty1<MyInterface, Boolean>).get(obj)
                encodeBooleanElement(descriptor, index, v)
              }
              // etc.
              else -> throw DataException("It's currently not possible to encode data of type '${field.returnType}'")
            }
          }
        }
      }
    }
}