updates to scalax collections and standard libr...

updates to scalax collections and standard library classes.

1 files changed, 61 insertions, 0 deletions

diff --git a/src/library/scalax/collection/generic/covartest/IterableForwarder.scala b/src/library/scalax/collection/generic/covartest/IterableForwarder.scala
new file mode 100755
index 0000000000..9d78cb18e0
--- /dev/null
+++ b/src/library/scalax/collection/generic/covartest/IterableForwarder.scala
@@ -0,0 +1,61 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003-2008, LAMP/EPFL             **
+**  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+\*                                                                      */
+
+// $Id: IterableProxy.scala 15458 2008-06-28 20:23:22Z stepancheg $
+
+
+package scalax.collection.generic.covartest
+
+import collection.mutable.Buffer
+import collection.immutable.{List, Stream}
+
+/** This trait implements a forwarder for iterable objects. It forwards
+ *  all calls to a different iterable object, except for
+ *
+ *    - toString, hashCode, equals, stringPrefix
+ *    - newBuilder, view
+ *    - all calls creating a new iterable objetc of the same kind
+ *
+ *  The above methods are forwarded by subclass IterableProxy
+ *
+ *  @author  Martin Odersky
+ *  @version 2.8
+ */
+trait IterableForwarder[+A] extends Iterable[A] {
+
+  /** The iterable object to which calls are forwarded */
+  protected def underlying: Iterable[A]
+
+  // Iterable delegates
+  // Iterable methods could be printed by  cat IterableTemplate.scala | sed -n '/trait Iterable/,$ p' | egrep '^  (override )?def'
+
+  override def elements = underlying.elements
+  override def isEmpty = underlying.isEmpty
+  override def hasDefiniteSize = underlying.hasDefiniteSize
+  override def foreach(f: A => Unit) = underlying.foreach(f)
+  override def forall(p: A => Boolean): Boolean = underlying.forall(p)
+  override def exists(p: A => Boolean): Boolean = underlying.exists(p)
+  override def count(p: A => Boolean): Int = underlying.count(p)
+  override def find(p: A => Boolean): Option[A] = underlying.find(p)
+  override def foldLeft[B](z: B)(op: (B, A) => B): B = underlying.foldLeft(z)(op)
+  override def foldRight[B](z: B)(op: (A, B) => B): B = underlying.foldRight(z)(op)
+  override def reduceLeft[B >: A](op: (B, A) => B): B = underlying.reduceLeft(op)
+  override def reduceRight[B >: A](op: (A, B) => B): B = underlying.reduceRight(op)
+  override def copyToBuffer[B >: A](dest: Buffer[B]) = underlying.copyToBuffer(dest)
+  override def copyToArray[B >: A](xs: Array[B], start: Int, len: Int) = underlying.copyToArray(xs, start, len)
+  override def toArray[B >: A]: Array[B] = underlying.toArray
+  override def toList: List[A] = underlying.toList
+  override def toSequence: Sequence[A] = underlying.toSequence
+  override def toStream: Stream[A] = underlying.toStream
+  override def mkString(start: String, sep: String, end: String): String = underlying.mkString(start, sep, end)
+  override def addString(b: StringBuilder, start: String, sep: String, end: String): StringBuilder = underlying.addString(b, start, sep, end)
+
+  override def head: A = underlying.head
+  override def last: A = underlying.last
+  override def sameElements[B >: A](that: OrderedIterable[B]): Boolean = underlying.sameElements(that)
+}