From fed4a267a202a9d60326861b0a71205503010d24 Mon Sep 17 00:00:00 2001
From: Waleed Ammar <wammar@cs.cmu.edu>
Date: Sat, 16 Jun 2012 05:35:49 -0400
Subject: enable regex-based feature templates

---
 decoder/ff_context.h | 29 ++++++++++++++++++++++++++---
 1 file changed, 26 insertions(+), 3 deletions(-)

(limited to 'decoder/ff_context.h')

diff --git a/decoder/ff_context.h b/decoder/ff_context.h
index 0d22b027..89bcb557 100644
--- a/decoder/ff_context.h
+++ b/decoder/ff_context.h
@@ -1,23 +1,46 @@
+
 #ifndef _FF_CONTEXT_H_
 #define _FF_CONTEXT_H_
 
 #include <vector>
+#include <boost/xpressive/xpressive.hpp>
 #include "ff.h"
 
+using namespace boost::xpressive;
+using namespace std;
+
 class RuleContextFeatures : public FeatureFunction {
  public:
-  RuleContextFeatures(const std::string& param);
+  RuleContextFeatures(const string& param);
  protected:
   virtual void TraversalFeaturesImpl(const SentenceMetadata& smeta,
                                      const Hypergraph::Edge& edge,
-                                     const std::vector<const void*>& ant_contexts,
+                                     const vector<const void*>& ant_contexts,
                                      SparseVector<double>* features,
                                      SparseVector<double>* estimated_features,
                                      void* context) const;
   virtual void PrepareForInput(const SentenceMetadata& smeta);
+  virtual void ParseArgs(const string& in);
+  virtual string Escape(const string& x) const;
+  virtual void ReplaceMacroWithString(string& feature_instance, 
+				      bool token_vs_label, 
+				      int relative_location, 
+				      const string& actual_token) const;
+  virtual void ReplaceTokenMacroWithString(string& feature_instance, 
+					   int relative_location, 
+					   const string& actual_token) const;
+  virtual void ReplaceLabelMacroWithString(string& feature_instance, 
+					   int relative_location, 
+					   const string& actual_token) const;
+  virtual void Error(const string&) const;
+
  private:
-  std::vector<WordID> current_input;
+  vector<int> token_relative_locations, label_relative_locations;
+  string feature_template;
+  vector<WordID> current_input;
   WordID kSOS, kEOS;
+  sregex macro_regex;
+  
 };
 
 #endif
-- 
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