added operator< to SearchGraphNode - compares Ids

1 files changed, 5 insertions, 1 deletions

diff --git a/moses/Manager.h b/moses/Manager.h
index e2f8ed8e5..11762ec37 100644
--- a/moses/Manager.h
+++ b/moses/Manager.h
@@ -56,6 +56,10 @@ struct SearchGraphNode {
     hypo(theHypo), recombinationHypo(theRecombinationHypo),
     forward(theForward), fscore(theFscore) {}
 
+    bool operator<(const SearchGraphNode& sgn) const {
+        return this->hypo->GetId() < sgn.hypo->GetId();
+    }
+
 };
 
 /** The Manager class implements a stack decoding algorithm for phrase-based decoding
@@ -104,7 +108,7 @@ private:
   // Helper functions to output search graph in the hypergraph format of Kenneth Heafield's lazy hypergraph decoder
   void OutputFeatureValuesForHypergraph(const Hypothesis* hypo, std::ostream &outputSearchGraphStream) const;
   size_t OutputFeatureValuesForHypergraph(size_t index, const Hypothesis* hypo, const FeatureFunction* ff, std::ostream &outputSearchGraphStream) const;
-  
+
 
 protected:
   // data