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diff --git a/moses/src/ChartTrellisDetour.h b/moses/src/ChartTrellisDetour.h
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+++ b/moses/src/ChartTrellisDetour.h
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+/***********************************************************************
+ Moses - statistical machine translation system
+ Copyright (C) 2006-2011 University of Edinburgh
+ 
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+ 
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ Lesser General Public License for more details.
+ 
+ You should have received a copy of the GNU Lesser General Public
+ License along with this library; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+***********************************************************************/
+
+#pragma once
+
+#include <boost/shared_ptr.hpp>
+
+namespace Moses
+{
+class ChartHypothesis;
+class ChartTrellisNode;
+class ChartTrellisPath;
+
+class ChartTrellisDetour
+{
+ public:
+  ChartTrellisDetour(boost::shared_ptr<const ChartTrellisPath>,
+                     const ChartTrellisNode &, const ChartHypothesis &);
+
+  const ChartTrellisPath &GetBasePath() const { return *m_basePath; }
+  const ChartTrellisNode &GetSubstitutedNode() const {
+    return m_substitutedNode;
+  }
+  const ChartHypothesis &GetReplacementHypo() const {
+    return m_replacementHypo;
+  }
+  float GetTotalScore() const { return m_totalScore; }
+
+ private:
+  boost::shared_ptr<const ChartTrellisPath> m_basePath;
+  const ChartTrellisNode &m_substitutedNode;
+  const ChartHypothesis &m_replacementHypo;
+  float m_totalScore;
+};
+
+}  // namespace Moses