Imported existing code

libraries/include/boost/flyweight/detail/default_value_policy.hpp

@@ -0,0 +1,58 @@
+/* Copyright 2006-2008 Joaquin M Lopez Munoz.
+ * 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/flyweight for library home page.
+ */
+
+#ifndef BOOST_FLYWEIGHT_DETAIL_DEFAULT_VALUE_POLICY_HPP
+#define BOOST_FLYWEIGHT_DETAIL_DEFAULT_VALUE_POLICY_HPP
+
+#if defined(_MSC_VER)&&(_MSC_VER>=1200)
+#pragma once
+#endif
+
+#include <boost/flyweight/detail/value_tag.hpp>
+#include <boost/preprocessor/repetition/enum_params.hpp>
+
+/* Default value policy: the key is the same as the value.
+ */
+
+namespace boost{
+
+namespace flyweights{
+
+namespace detail{
+
+template<typename Value>
+struct default_value_policy:value_marker
+{
+  typedef Value key_type;
+  typedef Value value_type;
+
+  struct rep_type
+  {
+  /* template ctors */
+
+#define BOOST_FLYWEIGHT_PERFECT_FWD_NAME explicit rep_type
+#define BOOST_FLYWEIGHT_PERFECT_FWD_BODY(n) \
+  :x(BOOST_PP_ENUM_PARAMS(n,t)){}
+#include <boost/flyweight/detail/perfect_fwd.hpp>
+
+    operator const value_type&()const{return x;}
+
+    value_type x;
+  };
+
+  static void construct_value(const rep_type&){}
+  static void copy_value(const rep_type&){}
+};
+
+} /* namespace flyweights::detail */
+
+} /* namespace flyweights */
+
+} /* namespace boost */
+
+#endif