Scala REPL personalization for internal DSL

Question

On personalizing Scala REPL for internal DSL, from create-your-custom-scala-repl

import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.ILoop

object TestConsole extends App {
  val settings = new Settings
  settings.usejavacp.value = true
  settings.deprecation.value = true

  new SampleILoop().process(settings)
}

class SampleILoop extends ILoop {
  override def prompt = "myDSL $  "

  addThunk {
    intp.beQuietDuring {
      intp.addImports("my.dsl._")
    }
  }
}

noticed that addThunk is not supported in 2.11.* .

Thus how to load myDSL.jar or import my.dsl._ into a personalized REPL ?

Answer 1

You can stick init code in a file, similar to "-i":

import scala.tools.nsc.Settings
import scala.tools.nsc.interpreter.ILoop

object TestConsole extends App {
  val settings = new Settings
  settings.usejavacp.value = true
  settings.deprecation.value = true

  new sys.SystemProperties += ("scala.repl.autoruncode" -> "myrepl.init")

  new SampleILoop().process(settings)
}

class SampleILoop extends ILoop {
  override def prompt = "myDSL $  "
}

Or:

object TestConsole extends App {
  val settings = new Settings
  settings.usejavacp.value = true
  settings.deprecation.value = true

  new sys.SystemProperties += (
    "scala.repl.autoruncode" -> "myrepl.init",
    "scala.shell.prompt" -> "myDSL $ "
  )

  new scala.tools.nsc.interpreter.ILoop process settings
}