1 files changed, 79 insertions, 0 deletions
diff --git a/extractor/intersector.h b/extractor/intersector.h
new file mode 100644
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--- /dev/null
+++ b/extractor/intersector.h
@@ -0,0 +1,79 @@
+#ifndef _INTERSECTOR_H_
+#define _INTERSECTOR_H_
+
+#include <memory>
+#include <unordered_map>
+#include <vector>
+
+#include <boost/functional/hash.hpp>
+
+#include "binary_search_merger.h"
+#include "linear_merger.h"
+
+using namespace std;
+
+typedef boost::hash<vector<int> > VectorHash;
+typedef unordered_map<vector<int>, vector<int>, VectorHash> Index;
+
+class DataArray;
+class MatchingComparator;
+class Phrase;
+class PhraseLocation;
+class Precomputation;
+class SuffixArray;
+class Vocabulary;
+
+class Intersector {
+ public:
+  Intersector(
+      shared_ptr<Vocabulary> vocabulary,
+      shared_ptr<Precomputation> precomputation,
+      shared_ptr<SuffixArray> source_suffix_array,
+      shared_ptr<MatchingComparator> comparator,
+      bool use_baeza_yates);
+
+  // For testing.
+  Intersector(
+      shared_ptr<Vocabulary> vocabulary,
+      shared_ptr<Precomputation> precomputation,
+      shared_ptr<SuffixArray> source_suffix_array,
+      shared_ptr<LinearMerger> linear_merger,
+      shared_ptr<BinarySearchMerger> binary_search_merger,
+      bool use_baeza_yates);
+
+  virtual ~Intersector();
+
+  virtual PhraseLocation Intersect(
+      const Phrase& prefix, PhraseLocation& prefix_location,
+      const Phrase& suffix, PhraseLocation& suffix_location,
+      const Phrase& phrase);
+
+ protected:
+  Intersector();
+
+ private:
+  void ConvertIndexes(shared_ptr<Precomputation> precomputation,
+                      shared_ptr<DataArray> data_array);
+
+  vector<int> ConvertPhrase(const vector<int>& old_phrase,
+                            shared_ptr<DataArray> data_array);
+
+  void ExtendPhraseLocation(const Phrase& phrase,
+      PhraseLocation& phrase_location);
+
+  shared_ptr<Vocabulary> vocabulary;
+  shared_ptr<SuffixArray> suffix_array;
+  shared_ptr<LinearMerger> linear_merger;
+  shared_ptr<BinarySearchMerger> binary_search_merger;
+  Index inverted_index;
+  Index collocations;
+  bool use_baeza_yates;
+
+  // TODO(pauldb): Don't forget to remove these.
+ public:
+  double sort_time;
+  double linear_merge_time;
+  double binary_merge_time;
+};
+
+#endif