/*

* Scala (https://www.scala-lang.org)

*

* Copyright EPFL and Lightbend, Inc. dba Akka

*

* Licensed under Apache License 2.0

* (http://www.apache.org/licenses/LICENSE-2.0).

*

* See the NOTICE file distributed with this work for

* additional information regarding copyright ownership.

*/

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]].

*

* @note Since JDK 1.7, a similar effect can be achieved with `class Ex extends Throwable(..., writableStackTrace = false)`

*/

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.noTraceSuppression.value calls back into NoStackTrace.noSuppression

final private[this] var _noSuppression = false

_noSuppression = System.getProperty("scala.control.noTraceSuppression", "").equalsIgnoreCase("true")

}