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+/*
+ * Copyright 2002 Adrian Thurston <thurston@colm.net>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+#ifndef _AAPL_SBSTMAP_H
+#define _AAPL_SBSTMAP_H
+
+#include "compare.h"
+#include "svector.h"
+
+#ifdef AAPL_NAMESPACE
+namespace Aapl {
+#endif
+
+/**
+ * \brief Element for BstMap.
+ *
+ * Stores the key and value pair. 
+ */
+template <class Key, class Value> struct SBstMapEl
+{
+	SBstMapEl() {}
+	SBstMapEl(const Key &key) : key(key) {}
+	SBstMapEl(const Key &key, const Value &val) : key(key), value(val) {}
+
+	/** \brief The key */
+	Key key;
+
+	/** \brief The value. */
+	Value value;
+};
+
+#ifdef AAPL_NAMESPACE
+}
+#endif
+
+/**
+ * \addtogroup bst 
+ * @{
+ */
+
+/** 
+ * \class SBstMap
+ * \brief Copy-on-write binary search table for key and value pairs.
+ *
+ * This is a map style binary search table that employs the copy-on-write
+ * mechanism for table data. BstMap stores key and value pairs in each
+ * element. The key and value can be any type. A compare class for the key
+ * must be supplied.
+ */
+
+/*@}*/
+
+#define BST_TEMPL_DECLARE class Key, class Value, \
+		class Compare = CmpOrd<Key>, class Resize = ResizeExpn
+#define BST_TEMPL_DEF class Key, class Value, class Compare, class Resize
+#define BST_TEMPL_USE Key, Value, Compare, Resize
+#define GET_KEY(el) ((el).key)
+#define BstTable SBstMap
+#define Vector SVector
+#define Table STable
+#define Element SBstMapEl<Key, Value>
+#define BSTMAP
+#define SHARED_BST
+
+#include "bstcommon.h"
+
+#undef BST_TEMPL_DECLARE
+#undef BST_TEMPL_DEF
+#undef BST_TEMPL_USE
+#undef GET_KEY
+#undef BstTable
+#undef Vector
+#undef Table
+#undef Element
+#undef BSTMAP
+#undef SHARED_BST
+
+/**
+ * \fn SBstMap::insert(const Key &key, BstMapEl<Key, Value> **lastFound)
+ * \brief Insert the given key.
+ *
+ * If the given key does not already exist in the table then a new element
+ * having key is inserted. They key copy constructor and value default
+ * constructor are used to place the pair in the table. If lastFound is given,
+ * it is set to the new entry created. If the insert fails then lastFound is
+ * set to the existing pair of the same key.
+ *
+ * \returns The new element created upon success, null upon failure.
+ */
+
+/**
+ * \fn SBstMap::insertMulti(const Key &key)
+ * \brief Insert the given key even if it exists already.
+ *
+ * If the key exists already then the new element having key is placed next
+ * to some other pair of the same key. InsertMulti cannot fail. The key copy
+ * constructor and the value default constructor are used to place the pair in
+ * the table.
+ *
+ * \returns The new element created.
+ */
+
+#endif /* _AAPL_SBSTMAP_H */