Scala - Initialize REPL environment - scala

Question

-Hi. I'd like to embed Scala REPL with initialized environment into my app. I've looked at IMain class and it seems I could do it via instance of it. The instance is created and then stored into intp public var in process() of ILoop.
How can I bind some names and/or add some imports before process() (e.g. before REPL)?
Following code fails on line 3 because intp is not yet created (=> NPE):
val x = 3
val interp = new ILoop
interp.bind("x", x) // -> interp.intp.bind("x", x)
val settings = new Settings
settings.usejavacp.value = true
interp.process(settings)
Thank you-.
UPDATE: Overriding createInterpreter() unfortunately doesn't work:
val x = 3
val interp = new ILoop {
override def createInterpreter() {
super.createInterpreter()
intp.bind("x", x) // -> interp.intp.bind("x", x)
}
}
val settings = new Settings
settings.usejavacp.value = true
interp.process(settings)
Interpreter is stuck on input (looks like deadlock, happens only with code above):
x: Int = 3
Failed to created JLineReader: java.lang.NoClassDefFoundError: scala/tools/jline/console/completer/Completer
Falling back to SimpleReader.
Welcome to Scala version 2.9.2 (OpenJDK 64-Bit Server VM, Java 1.7.0_06-icedtea).
Type in expressions to have them evaluated.
Type :help for more information.
scala> println
<infinite_sleep>
Thanks dvigal for suggestion.

Answer 1

There is a github project called scala-ssh-shell which may do what you want, or at least get you closer.

Answer 2

-Hi, sorry I not Scala REPL hacker but i think you can do something like:
class YourILoop(in0: Option[BufferedReader], protected override val out: JPrintWriter)
extends ILoop(in0, out) {
override def createInterpreter() {
if (addedClasspath != "")
settings.classpath append addedClasspath
intp = new ILoopInterpreter
val x = 3;
intp.bind("x", x)
}
}
object Run {
def errorFn(str: String): Boolean = {
Console.err println str
false
}
def process(args: Array[String]): Boolean = {
val command = new GenericRunnerCommand(args.toList, (x: String) => errorFn(x))
import command.{ settings, howToRun, thingToRun }
new YourILoop process settings
}
def main(args: Array[String]) {
process(args)
}
}