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diff --git a/libxsde/xsde/cxx/serializer/map.hxx b/libxsde/xsde/cxx/serializer/map.hxx
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+// file      : xsde/cxx/serializer/map.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2009 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSDE_CXX_SERIALIZER_MAP_HXX
+#define XSDE_CXX_SERIALIZER_MAP_HXX
+
+#include <stddef.h> // size_t
+
+#include <xsde/cxx/config.hxx>
+#include <xsde/cxx/hashmap.hxx>
+
+#include <xsde/cxx/serializer/elements.hxx>
+
+namespace xsde
+{
+  namespace cxx
+  {
+    namespace serializer
+    {
+      // Serializer map. Used in the polymorphic document parsing.
+      //
+      class serializer_map
+      {
+      public:
+        // The type_id argument is the application-specific type id
+        // object (passed as opaque const void*) that was set by the
+        // callback in the context or 0 if no type id was provided.
+        //
+        virtual serializer_base*
+        find (const void* type_id) const = 0;
+
+        // Reset the serializers this map contains.
+        //
+        virtual void
+        reset () const = 0;
+
+        virtual
+        ~serializer_map ();
+      };
+
+      // Default serializer map implementation. It assumes that the
+      // type id is a C string (const char*).
+      //
+      class serializer_map_impl: public serializer_map
+      {
+      public:
+#ifndef XSDE_EXCEPTIONS
+        enum error
+        {
+          error_none,
+          error_no_memory
+        };
+
+        error
+        _error () const;
+#endif
+
+      public:
+        serializer_map_impl (size_t buckets);
+
+        // Note that the type_id string is not copied so it should
+        // be valid for the lifetime of the map.
+        //
+        void
+        insert (const char* type_id, serializer_base&);
+
+        // This version of insert is a shortcut that uses the string
+        // returned by the serializer's _dynamic_type() function.
+        //
+        void
+        insert (serializer_base&);
+
+        virtual serializer_base*
+        find (const void* type_id) const;
+
+        virtual void
+        reset () const;
+
+      private:
+        serializer_map_impl (const serializer_map_impl&);
+
+        serializer_map_impl&
+        operator= (const serializer_map_impl&);
+
+      private:
+        hashmap map_;
+      };
+    }
+  }
+}
+
+#include <xsde/cxx/serializer/map.ixx>
+
+#endif  // XSDE_CXX_SERIALIZER_MAP_HXX