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diff --git a/libxsd-frontend/xsd-frontend/transformations/anonymous.hxx b/libxsd-frontend/xsd-frontend/transformations/anonymous.hxx
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+++ b/libxsd-frontend/xsd-frontend/transformations/anonymous.hxx
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+// file      : xsd-frontend/transformations/anonymous.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2006-2010 Code Synthesis Tools CC
+// license   : GNU GPL v2 + exceptions; see accompanying LICENSE file
+
+#ifndef XSD_FRONTEND_TRANSFORMATIONS_ANONYMOUS_HXX
+#define XSD_FRONTEND_TRANSFORMATIONS_ANONYMOUS_HXX
+
+#include <cult/types.hxx>
+
+#include <xsd-frontend/semantic-graph/elements.hxx> // Path
+#include <xsd-frontend/semantic-graph/schema.hxx>
+
+namespace XSDFrontend
+{
+  namespace Transformations
+  {
+    using namespace Cult::Types;
+
+    class AnonymousNameTranslator
+    {
+    public:
+      virtual
+      ~AnonymousNameTranslator ();
+
+      // The file argument is empty for the currect translation
+      // unit.
+      //
+      virtual WideString
+      translate (WideString const& file,
+                 WideString const& ns,
+                 WideString const& name,
+                 WideString const& xpath) = 0;
+    };
+
+    // This transformation morphs anonymous types into named ones
+    // with the names derived from the enclosing attributes and
+    // elements. If the detect_unstable_conflicts argument is true
+    // then the transformation detects and reports unstable conflicts
+    // in name assignment.
+    //
+    class Anonymous
+    {
+    public:
+      struct Failed {};
+
+      Anonymous (AnonymousNameTranslator&);
+
+      Void
+      transform (SemanticGraph::Schema&,
+                 SemanticGraph::Path const&,
+                 Boolean detect_unstable_conflicts);
+
+    private:
+      AnonymousNameTranslator& trans_;
+    };
+  }
+}
+
+#endif // XSD_FRONTEND_TRANSFORMATIONS_ANONYMOUS_HXX