Scala example source code file (NoStackTrace.scala)

This example Scala source code file (NoStackTrace.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

nostacktrace, throwable

The NoStackTrace.scala Scala example source code

/*                     __                                               *\
**     ________ ___   / /  ___     Scala API                            **
**    / __/ __// _ | / /  / _ |    (c) 2003-2013, LAMP/EPFL             **
**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
** /____/\___/_/ |_/____/_/ | |                                         **
**                          |/                                          **
\*                                                                      */

package scala
package util.control

/** A trait for exceptions which, for efficiency reasons, do not
 *  fill in the stack trace.  Stack trace suppression can be disabled
 *  on a global basis via a system property wrapper in
 *  [[scala.sys.SystemProperties]].
 *
 *  @author   Paul Phillips
 *  @since    2.8
 */
trait NoStackTrace extends Throwable {
  override def fillInStackTrace(): Throwable =
    if (NoStackTrace.noSuppression) super.fillInStackTrace()
    else this
}

object NoStackTrace {
  final def noSuppression = _noSuppression

  // two-stage init to make checkinit happy, since sys.SystemProperties.noTraceSupression.value calls back into NoStackTrace.noSuppression
  final private var _noSuppression = false
  _noSuppression = sys.SystemProperties.noTraceSupression.value
}