1 files changed, 40 insertions, 0 deletions
diff --git a/decoder/ff_rules.h b/decoder/ff_rules.h
new file mode 100644
index 00000000..48d8bd05
--- /dev/null
+++ b/decoder/ff_rules.h
@@ -0,0 +1,40 @@
+#ifndef _FF_RULES_H_
+#define _FF_RULES_H_
+
+#include <vector>
+#include <map>
+#include "ff.h"
+#include "array2d.h"
+#include "wordid.h"
+
+class RuleIdentityFeatures : public FeatureFunction {
+ public:
+  RuleIdentityFeatures(const std::string& param);
+ protected:
+  virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
+                                     const Hypergraph::Edge& edge,
+                                     const std::vector<const void*>& ant_contexts,
+                                     SparseVector<double>* features,
+                                     SparseVector<double>* estimated_features,
+                                     void* context) const;
+  virtual void PrepareForInput(const SentenceMetadata& smeta);
+ private:
+  mutable std::map<const TRule*, int> rule2_fid_;
+};
+
+class RuleNgramFeatures : public FeatureFunction {
+ public:
+  RuleNgramFeatures(const std::string& param);
+ protected:
+  virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
+                                     const Hypergraph::Edge& edge,
+                                     const std::vector<const void*>& ant_contexts,
+                                     SparseVector<double>* features,
+                                     SparseVector<double>* estimated_features,
+                                     void* context) const;
+  virtual void PrepareForInput(const SentenceMetadata& smeta);
+ private:
+  mutable std::map<const TRule*, SparseVector<double> > rule2_feats_;
+};
+
+#endif