Small reorganization of utils/ folder contents
diff --git a/utils/stats/stats-tree.h b/utils/stats/stats-tree.h
new file mode 100644
index 0000000..955f798
--- /dev/null
+++ b/utils/stats/stats-tree.h
@@ -0,0 +1,92 @@
+/* -*- Mode: C++; c-file-style: "gnu"; indent-tabs-mode:nil; -*- */
+/*
+ * Copyright (c) 2011 University of California, Los Angeles
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation;
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ * Author: Alexander Afanasyev <alexander.afanasyev@ucla.edu>
+ */
+
+#ifndef STATS_TREE_H
+#define STATS_TREE_H
+
+#include "../trie/trie.h"
+#include "load-stats-node.h"
+#include "ns3/ndn-name-components.h"
+#include "ns3/ptr.h"
+
+namespace ns3 {
+namespace ndn {
+namespace ndnSIM {
+
+class StatsTree
+{
+public:
+ typedef trie< NameComponents,
+ non_pointer_traits< LoadStatsNode >, void* > tree_type;
+
+ StatsTree ();
+
+ void
+ Step ();
+
+ void
+ NewPitEntry (const NameComponents &key);
+
+ void
+ Incoming (const NameComponents &key, Ptr<Face> face);
+
+ void
+ Outgoing (const NameComponents &key, Ptr<Face> face);
+
+ void
+ Satisfy (const NameComponents &key);
+
+ void
+ Timeout (const NameComponents &key);
+
+ void
+ Rx (const NameComponents &key, Ptr<Face> face, uint32_t amount);
+
+ void
+ Tx (const NameComponents &key, Ptr<Face> face, uint32_t amount);
+
+ // const LoadStatsNode &
+ // Get (const NameComponents &key) const;
+ const LoadStatsNode &
+ operator [] (const NameComponents &key) const;
+
+ void
+ RemoveFace (Ptr<Face> face);
+
+private:
+ const LoadStatsNode &
+ WalkLeftRightRoot (tree_type *node);
+
+
+private:
+ tree_type m_tree;
+
+ friend std::ostream &
+ operator << (std::ostream &os, const StatsTree &tree);
+};
+
+std::ostream &
+operator << (std::ostream &os, const StatsTree &tree);
+
+} // namespace ndnSIM
+} // namespace ndn
+} // namespace ns3
+
+#endif // STATS_TREE_H