More crap, some new discoveries, backtracking, annoyance.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3918 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/as/com/threerings/util/SimpleMap.as

@@ -4,15 +4,44 @@ package com.threerings.util {
  * Marker class that allows us to use ActionScript's built-in hashing
  * function without hassle.
  */
-public dynamic class SimpleMap extends Object
+public class SimpleMap extends Object
 {
+    public function clear () :void
+    {
+        _data = new Object();
+    }
+
+    public function get (key :Object) :Object
+    {
+        var skey :String = key.toString();
+        return _data[skey];
+    }
+
+    public function keys () :Array
+    {
+        var arr :Array = new Array();
+        for (var skey :String in _data) {
+            arr.push(skey);
+        }
+        return arr;
+    }
+
+    public function put (key :Object, value :Object) :Object
+    {
+        var skey :String = key.toString();
+        var oldValue :Object = _data[skey];
+        _data[skey] = value;
+        return oldValue;
+    }
+
     public function remove (key :Object) :Object
     {
-        // I'm not sure this really works
         var skey :String = key.toString();
-        var value :Object = this[skey];
-        this[skey] = undefined;
+        var value :Object = _data[skey];
+        delete _data[skey];
         return value;
     }
+
+    private var _data :Object = new Object();
 }
 }