Collections refactoring.

1 files changed, 27 insertions, 0 deletions

diff --git a/src/library/scala/collection/IterableView.scala b/src/library/scala/collection/IterableView.scala
new file mode 100644
index 0000000000..ade1f294ca
--- /dev/null
+++ b/src/library/scala/collection/IterableView.scala
@@ -0,0 +1,27 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003-2009, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id$
+
+
+package scala.collection
+
+import generic._
+import TraversableView.NoBuilder
+
+/** A base class for views of Iterables.
+ *
+ *  @author Martin Odersky
+ *  @version 2.8
+ */
+trait IterableView[+A, +Coll] extends IterableViewLike[A, Coll, IterableView[A, Coll]]
+
+object IterableView {
+  type Coll = TraversableView[_, C] forSome {type C <: Traversable[_]}
+  implicit def builderFactory[A]: BuilderFactory[A, IterableView[A, Iterable[_]], Coll] = new BuilderFactory[A, IterableView[A, Iterable[_]], Coll] { def apply(from: Coll) = new NoBuilder }
+}