1 files changed, 33 insertions, 0 deletions
diff --git a/scalalib/overrides/scala/util/control/NoStackTrace.scala b/scalalib/overrides/scala/util/control/NoStackTrace.scala
new file mode 100644
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+++ b/scalalib/overrides/scala/util/control/NoStackTrace.scala
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+/*                     __                                               *\
+**     ________ ___   / /  ___     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
+  // !!! Disabled in Scala.js because SystemProperties is not supported
+  //_noSuppression = sys.SystemProperties.noTraceSupression.value
+}