Add search library to cdec (not used yet)

1 files changed, 49 insertions, 0 deletions

diff --git a/klm/search/weights.hh b/klm/search/weights.hh
new file mode 100644
index 00000000..4a4388c7
--- /dev/null
+++ b/klm/search/weights.hh
@@ -0,0 +1,49 @@
+// For now, the individual features are not kept.  
+#ifndef SEARCH_WEIGHTS__
+#define SEARCH_WEIGHTS__
+
+#include "search/types.hh"
+#include "util/exception.hh"
+#include "util/string_piece.hh"
+
+#include <boost/unordered_map.hpp>
+
+#include <string>
+
+namespace search {
+
+class WeightParseException : public util::Exception {
+  public:
+    WeightParseException() {}
+    ~WeightParseException() throw() {}
+};
+
+class Weights {
+  public:
+    // Parses weights, sets lm_weight_, removes it from map_.
+    explicit Weights(StringPiece text);
+
+    search::Score DotNoLM(StringPiece text) const;
+
+    search::Score LM() const { return lm_; }
+
+    search::Score OOV() const { return oov_; }
+
+    search::Score WordPenalty() const { return word_penalty_; }
+
+    // Mostly for testing.  
+    const boost::unordered_map<std::string, search::Score> &GetMap() const { return map_; }
+
+  private:
+    float Steal(const std::string &str);
+
+    typedef boost::unordered_map<std::string, search::Score> Map;
+
+    Map map_;
+
+    search::Score lm_, oov_, word_penalty_;
+};
+
+} // namespace search
+
+#endif // SEARCH_WEIGHTS__