Switching to the new build system and to the ne...

Switching to the new build system and to the new build system. This is a
MAJOR commit, so be careful when updating.

1 files changed, 64 insertions, 0 deletions

diff --git a/src/library/scala/collection/mutable/ImmutableMapAdaptor.scala b/src/library/scala/collection/mutable/ImmutableMapAdaptor.scala
new file mode 100644
index 0000000000..5167636b40
--- /dev/null
+++ b/src/library/scala/collection/mutable/ImmutableMapAdaptor.scala
@@ -0,0 +1,64 @@
+/*                     __                                               *\
+**     ________ ___   / /  ___     Scala API                            **
+**    / __/ __// _ | / /  / _ |    (c) 2003, LAMP/EPFL                  **
+**  __\ \/ /__/ __ |/ /__/ __ |                                         **
+** /____/\___/_/ |_/____/_/ | |                                         **
+**                          |/                                          **
+** $Id$
+\*                                                                      */
+
+package scala.collection.mutable;
+
+
+/** This class can be used as an adaptor to create mutable maps from
+ *  immutable map implementations. Only method <code>empty</code> has
+ *  to be redefined if the immutable map on which this mutable map is
+ *  originally based is not empty. <code>empty</code> is supposed to
+ *  return the representation of an empty map.
+ *
+ *  @author  Matthias Zenger
+ *  @version 1.0, 21/07/2003
+ */
+[serializable]
+class ImmutableMapAdaptor[A, B](m: scala.collection.immutable.Map[A, B]) extends Map[A, B] {
+
+    protected var imap = m;
+
+    def size: Int = imap.size;
+
+    def get(key: A): Option[B] = imap.get(key);
+
+    override def isEmpty: Boolean = imap.isEmpty;
+
+    override def apply(key: A): B = imap.apply(key);
+
+    override def contains(key: A): Boolean = imap.contains(key);
+
+    override def isDefinedAt(key: A) = imap.isDefinedAt(key);
+
+    override def keys: Iterator[A] = imap.keys;
+
+    override def values: Iterator[B] = imap.values;
+
+    def elements: Iterator[Pair[A, B]] = imap.elements;
+
+    override def foreach(f: (A, B) => Unit) = imap.foreach(f);
+
+    override def toList: List[Pair[A, B]] = imap.toList;
+
+    override def toString() = imap.toString();
+
+    def update(key: A, value: B): Unit = { imap = imap.update(key, value); }
+
+    def -=(key: A): Unit = { imap = imap - key; }
+
+    override def clear: Unit = { imap = empty; }
+
+    override def map(f: (A, B) => B): Unit = { imap = imap.map(f); }
+
+    override def filter(p: (A, B) => Boolean): Unit = { imap = imap.filter(p); }
+
+    override def mappingToString(p: Pair[A, B]) = imap.mappingToString(p);
+
+    protected def empty: scala.collection.immutable.Map[A, B] = m;
+}