merge paul's extractor code

1 files changed, 37 insertions, 0 deletions

diff --git a/extractor/matchings_finder.h b/extractor/matchings_finder.h
new file mode 100644
index 00000000..451f4a4c
--- /dev/null
+++ b/extractor/matchings_finder.h
@@ -0,0 +1,37 @@
+#ifndef _MATCHINGS_FINDER_H_
+#define _MATCHINGS_FINDER_H_
+
+#include <memory>
+#include <string>
+
+using namespace std;
+
+namespace extractor {
+
+class PhraseLocation;
+class SuffixArray;
+
+/**
+ * Class wrapping the suffix array lookup for a contiguous phrase.
+ */
+class MatchingsFinder {
+ public:
+  MatchingsFinder(shared_ptr<SuffixArray> suffix_array);
+
+  virtual ~MatchingsFinder();
+
+  // Uses the suffix array to search only for the last word of the phrase
+  // starting from the range in which the prefix of the phrase occurs.
+  virtual PhraseLocation Find(PhraseLocation& location, const string& word,
+                              int offset);
+
+ protected:
+  MatchingsFinder();
+
+ private:
+  shared_ptr<SuffixArray> suffix_array;
+};
+
+} // namespace extractor
+
+#endif