gistfile1.scala

import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.{ExprTyper, IMain}

object Example extends App {
  val settings = new Settings()
  settings.usejavacp.value = true
  val main = new IMain(settings)
  object exprTyper extends { val repl: main.type = main } with ExprTyper { }

  val result = exprTyper.parse(
    """
      |object HelloWorld {
      |  def main(args: Array[String]) {
      |    println("Hello, world!")
      |  }
      |}
    """.stripMargin)

  println(result)
}