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diff --git a/libxsd/xsd/cxx/parser/document.hxx b/libxsd/xsd/cxx/parser/document.hxx
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+// file      : xsd/cxx/parser/document.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 XSD_CXX_PARSER_DOCUMENT_HXX
+#define XSD_CXX_PARSER_DOCUMENT_HXX
+
+#include <string>
+#include <cstddef> // std::size_t
+
+#include <xsd/cxx/ro-string.hxx>
+#include <xsd/cxx/parser/elements.hxx>
+
+namespace xsd
+{
+  namespace cxx
+  {
+    namespace parser
+    {
+      // If you want to use a different underlying XML parser, all you
+      // need to do is to route events to this interface.
+      //
+      template <typename C>
+      class document
+      {
+      public:
+        virtual
+        ~document ();
+
+        document (parser_base<C>& root,
+                  const std::basic_string<C>& ns,
+                  const std::basic_string<C>& name);
+
+      public:
+        // The type argument is a type name and namespace from the
+        // xsi:type attribute in the form "<name> <namespace>" with
+        // the space and namespace part absent if the type does not
+        // have a namespace or 0 if xsi:type is not present.
+        //
+        void
+        start_element (const ro_string<C>& ns,
+                       const ro_string<C>& name,
+                       const ro_string<C>* type);
+
+        void
+        end_element (const ro_string<C>& ns, const ro_string<C>& name);
+
+        void
+        attribute (const ro_string<C>& ns,
+                   const ro_string<C>& name,
+                   const ro_string<C>& value);
+
+        void
+        characters (const ro_string<C>&);
+
+      protected:
+        document ();
+
+        // This function is called to obtain the root element type parser.
+        // If the returned pointed is 0 then the whole document content
+        // is ignored.
+        //
+        virtual parser_base<C>*
+        start_root_element (const ro_string<C>& ns,
+                            const ro_string<C>& name,
+                            const ro_string<C>* type);
+
+        // This function is called to indicate the completion of document
+        // parsing. The parser argument contains the pointer returned by
+        // start_root_element.
+        //
+        virtual void
+        end_root_element (const ro_string<C>& ns,
+                          const ro_string<C>& name,
+                          parser_base<C>* parser);
+
+      private:
+        parser_base<C>* root_;
+        std::basic_string<C> ns_;
+        std::basic_string<C> name_;
+        std::size_t depth_;
+      };
+    }
+  }
+}
+
+#include <xsd/cxx/parser/document.txx>
+
+#endif  // XSD_CXX_PARSER_DOCUMENT_HXX