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+/*
+ * Copyright (c) 2006 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * Authors: Ali Saidi
+ */
+
+#ifndef __BASE_RANGE_MAP_HH__
+#define __BASE_RANGE_MAP_HH__
+
+#include "base/range.hh"
+
+#include <map>
+
+template <class T,class V>
+class range_map
+{
+  private:
+    typedef std::map<Range<T>,V> RangeMap;
+    RangeMap tree;
+
+  public:
+    typedef typename RangeMap::iterator iterator;
+
+    template <class U>
+    const iterator find(const Range<U> &r)
+    {
+        iterator i;
+
+        i = tree.upper_bound(r);
+
+        if (i == tree.begin())
+            // Nothing could match, so return end()
+            return tree.end();
+
+        i--;
+
+        if (i->first.start <= r.end && i->first.end >= r.start)
+            return i;
+
+        return tree.end();
+    }
+
+    template <class U>
+    bool intersect(const Range<U> &r)
+    {
+        iterator i;
+        i = find(r);
+        if (i != tree.end())
+            return true;
+        return false;
+    }
+
+
+    template <class U,class W>
+    iterator insert(const Range<U> &r, const W d)
+    {
+        if (intersect(r))
+            return tree.end();
+
+        return tree.insert(std::make_pair<Range<T>,V>(r, d)).first;
+    }
+
+    size_t erase(T k)
+    {
+        return tree.erase(k);
+    }
+
+    void erase(iterator p)
+    {
+        tree.erase(p);
+    }
+
+    void erase(iterator p, iterator q)
+    {
+        tree.erase(p,q);
+    }
+
+    void clear()
+    {
+        tree.erase(tree.begin(), tree.end());
+    }
+
+    iterator begin()
+    {
+        return tree.begin();
+    }
+
+    iterator end()
+    {
+        return tree.end();
+    }
+
+    size_t size()
+    {
+        return tree.size();
+    }
+
+    bool empty()
+    {
+        return tree.empty();
+    }
+};
+
+
+#endif //__BASE_RANGE_MAP_HH__