=str #22448 rewrite Source.empty to GraphStage

2017-03-03 15:20:37 +01:00 · 2017-03-03 15:20:37 +01:00 · e47dbda154
commit e47dbda154
parent 0367812e40
6 changed files with 115 additions and 10 deletions
--- a/akka-stream/src/main/scala/akka/stream/scaladsl/Source.scala
+++ b/akka-stream/src/main/scala/akka/stream/scaladsl/Source.scala
@ -331,11 +331,7 @@ object Source {
   */
  def empty[T]: Source[T, NotUsed] = _empty
  private[this] val _empty: Source[Nothing, NotUsed] =
-    new Source(
-      new PublisherSource[Nothing](
-        EmptyPublisher,
-        DefaultAttributes.emptySource,
-        shape("EmptySource")))
+    Source.fromGraph(EmptySource)

  /**
   * Create a `Source` which materializes a [[scala.concurrent.Promise]] which controls what element