Akka/Scala example source code file (CaseStatements.scala)

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

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

Akka tags/keywords

akka, apply, casestatement, f, japi, p, partialfunction, predicate, t, unit, unitapply, unitcasestatement

The CaseStatements.scala Akka example source code

/**
 * Copyright (C) 2009-2014 Typesafe Inc. <http://www.typesafe.com>
 */

package akka.japi.pf

import FI.{ UnitApply, Apply, Predicate }

private[pf] object CaseStatement {
  def empty[F, T](): PartialFunction[F, T] = PartialFunction.empty
}

private[pf] class CaseStatement[F, P, T](predicate: Predicate, apply: Apply[P, T])
  extends PartialFunction[F, T] {

  override def isDefinedAt(o: F) = predicate.defined(o)

  override def apply(o: F) = apply.apply(o.asInstanceOf[P])
}

private[pf] class UnitCaseStatement[F, P](predicate: Predicate, apply: UnitApply[P])
  extends PartialFunction[F, Unit] {

  override def isDefinedAt(o: F) = predicate.defined(o)

  override def apply(o: F) = apply.apply(o.asInstanceOf[P])
}