Scala example source code file (ISettings.scala)

This example Scala source code file (ISettings.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Scala source code examples by using tags.

All credit for the original source code belongs to scala-lang.org; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Scala tags/keywords

any, boolean, compiler, disabled, enabled, imain, isettings, map, nsc

The ISettings.scala Scala example source code

/* NSC -- new Scala compiler
 * Copyright 2005-2013 LAMP/EPFL
 * @author Alexander Spoon
 */

package scala.tools.nsc
package interpreter

/** Settings for the interpreter
 *
 * @version 1.0
 * @author Lex Spoon, 2007/3/24
 **/
class ISettings(intp: IMain) {
  /** The maximum length of toString to use when printing the result
   *  of an evaluation.  0 means no maximum.  If a printout requires
   *  more than this number of characters, then the printout is
   *  truncated.
   */
  var maxPrintString = replProps.maxPrintString.option.getOrElse(800)

  /** The maximum number of completion candidates to print for tab
   *  completion without requiring confirmation.
   */
  var maxAutoprintCompletion = 250

  /** String unwrapping can be disabled if it is causing issues.
   *  Setting this to false means you will see Strings like "$iw.$iw.".
   */
  var unwrapStrings = true

  def deprecation_=(x: Boolean) = {
    val old = intp.settings.deprecation.value
    intp.settings.deprecation.value = x
    if (!old && x) println("Enabled -deprecation output.")
    else if (old && !x) println("Disabled -deprecation output.")
  }
  def deprecation: Boolean = intp.settings.deprecation.value

  def allSettings = Map[String, Any](
    "maxPrintString" -> maxPrintString,
    "maxAutoprintCompletion" -> maxAutoprintCompletion,
    "unwrapStrings" -> unwrapStrings,
    "deprecation" -> deprecation
  )

  private def allSettingsString =
    allSettings.toList sortBy (_._1) map { case (k, v) => "  " + k + " = " + v + "\n" } mkString

  override def toString = """
    | ISettings {
    | %s
    | }""".stripMargin.format(allSettingsString)
}