- Changed some stuff around with streaming.

- Before, the Input/OutputStream classes handled Streamables directly
    and Streamers were never created for them. Simplified the code somewhat
    by always creating a Streamer. It's now more like the Java side, too.
  - No more BAD_STREAMER, since null now means "bad".
- Built-in support for streaming enums.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5352 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/io/streamers/EnumStreamer.as

@@ -0,0 +1,52 @@
+//
+// $Id$
+//
+// Narya library - tools for developing networked games
+// Copyright (C) 2002-2007 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/narya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.io.streamers {
+
+import com.threerings.util.Enum;
+
+import com.threerings.io.ObjectInputStream;
+import com.threerings.io.ObjectOutputStream;
+import com.threerings.io.Streamer;
+
+public class EnumStreamer extends Streamer
+{
+    public function EnumStreamer (enumClass :Class, jname :String = null)
+    {
+        super(enumClass, jname);
+    }
+
+    override public function createObject (ins :ObjectInputStream) :Object
+    {
+        return Enum.valueOf(_target, ins.readUTF());
+    }
+
+    override public function writeObject (obj :Object, out :ObjectOutputStream) :void
+    {
+        out.writeUTF((obj as Enum).name());
+    }
+
+    override public function readObject (obj :Object, ins :ObjectInputStream) :void
+    {
+        // unneeded, done in createObject
+    }
+}
+}