path: root/src/compiler/scala/tools/nsc/interpreter/ReplConfig.scala

/* NSC -- new Scala compiler
 * Copyright 2005-2011 LAMP/EPFL
 * @author Paul Phillips
 */

package scala.tools.nsc
package interpreter

import sys.{ Prop, BooleanProp }

trait ReplConfig {

  class ReplProps {
    private def bool(name: String) = BooleanProp.keyExists(name)

    val jlineDebug = bool("scala.tools.jline.internal.Log.debug")
    val jlineTrace = bool("scala.tools.jline.internal.Log.trace")

    val debug = bool("scala.repl.debug")
    val trace = bool("scala.repl.trace")
    val power = bool("scala.repl.power")

    val replInitCode = Prop[JFile]("scala.repl.initcode")
    val powerInitCode = Prop[JFile]("scala.repl.power.initcode")
    val powerBanner = Prop[JFile]("scala.repl.power.banner")
  }
  lazy val replProps = new ReplProps

  /** Debug output */
  private[nsc] def repldbg(msg: String) = if (isReplDebug) Console println msg

  /** Tracing */
  private[nsc] def tracing[T](msg: String)(x: T): T = {
    if (isReplDebug)
      println("(" + msg + ") " + x)

    x
  }

  def isReplDebug: Boolean = replProps.debug
  def isReplPower: Boolean = replProps.power
}