sbt.internal.util.ExitHook.scala Maven / Gradle / Ivy
/* sbt -- Simple Build Tool
* Copyright 2009, 2010 Mark Harrah
*/
package sbt.internal.util
/** Defines a function to call as sbt exits.*/
trait ExitHook {
/** Subclasses should implement this method, which is called when this hook is executed. */
def runBeforeExiting(): Unit
}
object ExitHook {
def apply(f: => Unit): ExitHook = new ExitHook { def runBeforeExiting() = f }
}
object ExitHooks {
/** Calls each registered exit hook, trapping any exceptions so that each hook is given a chance to run. */
def runExitHooks(exitHooks: Seq[ExitHook]): Seq[Throwable] =
exitHooks.flatMap(hook =>
ErrorHandling.wideConvert(hook.runBeforeExiting()).left.toOption)
}