convert Evaluate() methods into abstract, rather than empty functions. Every FF must implement them all

1 files changed, 10 insertions, 0 deletions

diff --git a/moses/FF/PhrasePairFeature.h b/moses/FF/PhrasePairFeature.h
index eb94fb48b..e373d8ec8 100644
--- a/moses/FF/PhrasePairFeature.h
+++ b/moses/FF/PhrasePairFeature.h
@@ -45,6 +45,16 @@ public:
     throw std::logic_error("PhrasePairFeature not valid in chart decoder");
   }
 
+  void Evaluate(const InputType &input
+                        , const InputPath &inputPath
+                        , ScoreComponentCollection &scoreBreakdown) const
+  {}
+  void Evaluate(const Phrase &source
+                        , const TargetPhrase &targetPhrase
+                        , ScoreComponentCollection &scoreBreakdown
+                        , ScoreComponentCollection &estimatedFutureScore) const
+  {}
+
   void Load();
   void SetParameter(const std::string& key, const std::string& value);