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re #281: Added as[T] and asSilently[T] to Option[Any] via implicit conversions in object Actor.

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This commit is contained in:
Heiko Seeberger 2010-06-21 12:24:06 +02:00
parent a69f0d44c6
commit 0e70a5face
1 changed files with 23 additions and 2 deletions
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25
akka-core/src/main/scala/actor/Actor.scala
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@ -7,8 +7,9 @@ package se.scalablesolutions.akka.actor
import se.scalablesolutions.akka.dispatch._
import se.scalablesolutions.akka.config.Config._
import se.scalablesolutions.akka.config.ScalaConfig._
import se.scalablesolutions.akka.util.Logging
import se.scalablesolutions.akka.serialization.Serializer
import se.scalablesolutions.akka.util.Helpers.{ narrow, narrowSilently }
import se.scalablesolutions.akka.util.Logging
import com.google.protobuf.Message
@ -279,8 +280,13 @@ object Actor extends Logging {
case Spawn => body; self.stop
}
}).start ! Spawn
}
/**
* Implicitly converts the given Option[Any] to a AnyOptionAsTypedOption which offers the method <code>as[T]</code>
* to convert an Option[Any] to an Option[T].
*/
implicit def toAnyOptionAsTypedOption(anyOption: Option[Any]) = new AnyOptionAsTypedOption(anyOption)
}
/**
@ -496,3 +502,18 @@ trait Actor extends Logging {
case Kill => throw new ActorKilledException("Actor [" + toString + "] was killed by a Kill message")
}
}
private[actor] class AnyOptionAsTypedOption(anyOption: Option[Any]) {
/**
* Convenience helper to cast the given Option of Any to an Option of the given type. Will throw a ClassCastException
* if the actual type is not assignable from the given one.
*/
def as[T]: Option[T] = narrow[T](anyOption)
/**
* Convenience helper to cast the given Option of Any to an Option of the given type. Will swallow a possible
* ClassCastException and return None in that case.
*/
def asSilently[T: Manifest]: Option[T] = narrowSilently[T](anyOption)
}