Scala JSR 223 importing types/classes

Question

The following example fails because the definition for Stuff can't be found:

package com.example

import javax.script.ScriptEngineManager

object Driver5 extends App {
  case class Stuff(s: String, d: Double)
  val e = new ScriptEngineManager().getEngineByName("scala")
  println(e.eval("""import Driver5.Stuff; Stuff("Hello", 3.14)"""))
}

I'm unable to find any import statement that allows me to use my own classes inside of the eval statement. Am I doing something wrong? How does one import classes to be used during eval?

EDIT: Clarified example code to elicit more direct answers.

Answer 1

The Scripting engine does not know the context. It surely can't access all the local variables and imports in the script, since they are not available in the classfiles. (Well, variable names may be optionally available as a debug information, but it is virtually impossible to use them for this purpose.)

I am not sure if there is a special API for that. Imports are different across various languages, so bringing an API that should fit them all can be difficult.

You should be able to add the imports to the eval-ed String. I am not sure if there is a better way to do this.