Added boost header

test/external/boost/property_map/shared_array_property_map.hpp

@@ -0,0 +1,52 @@
+//  Copyright (C) 2009 Trustees of Indiana University
+//  Authors: Jeremiah Willcock, Andrew Lumsdaine
+
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org/libs/property_map for documentation.
+
+#ifndef BOOST_SHARED_ARRAY_PROPERTY_MAP_HPP
+#define BOOST_SHARED_ARRAY_PROPERTY_MAP_HPP
+
+#include <boost/smart_ptr/shared_array.hpp>
+#include <boost/property_map/property_map.hpp>
+
+namespace boost {
+
+template <class T, class IndexMap>
+class shared_array_property_map
+  : public boost::put_get_helper<T&, shared_array_property_map<T, IndexMap> >
+{
+  public:
+  typedef typename property_traits<IndexMap>::key_type key_type;
+  typedef T value_type;
+  typedef T& reference;
+  typedef boost::lvalue_property_map_tag category;
+
+  inline shared_array_property_map(): data(), index() {}
+
+  explicit inline shared_array_property_map(
+    size_t n,
+    const IndexMap& _id = IndexMap())
+  : data(new T[n]), index(_id) {}
+
+  inline T& operator[](key_type v) const {
+    return data[get(index, v)];
+  }
+
+  private:
+  boost::shared_array<T> data;
+  IndexMap index;
+};
+
+template <class T, class IndexMap>
+shared_array_property_map<T, IndexMap>
+make_shared_array_property_map(size_t n, const T&, const IndexMap& index) {
+  return shared_array_property_map<T, IndexMap>(n, index);
+}
+
+} // end namespace boost
+
+#endif // BOOST_SHARED_ARRAY_PROPERTY_MAP_HPP