DSet should be cloneable; ObjectUtil.copy() only works for registered

Externalizables or built-in classes.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4464 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/presents/dobj/DSet.as

@@ -3,6 +3,7 @@ package com.threerings.presents.dobj {
 import mx.utils.ObjectUtil;
 
 import com.threerings.util.ArrayIterator;
+import com.threerings.util.Cloneable;
 import com.threerings.util.Equalable;
 import com.threerings.util.Iterator;
 import com.threerings.util.StringBuilder;
@@ -32,7 +33,7 @@ import com.threerings.io.TypedArray;
  * a {@link Streamable} type.
  */
 public class DSet
-    implements Streamable
+    implements Cloneable, Streamable
 {
     /**
      * Returns the number of entries in this set.
@@ -189,6 +190,16 @@ public class DSet
         return null;
     }
 
+    // from interface Cloneable
+    public function clone () :Object
+    {
+        var other :DSet = new DSet();
+        for each (var val :DSet_Entry in _entries) {
+            other._entries.push(val);
+        }
+        return other;
+    }
+
     /**
      * Generates a string representation of this set instance.
      */