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#ifndef MOZC_DICTIONARY_RX_RX_TRIE_BUILDER_H_
#define MOZC_DICTIONARY_RX_RX_TRIE_BUILDER_H_

#include <string>

#include "base/base.h"

struct rx_builder;

namespace mozc {
class OutputFileStream;
namespace rx {

class RxTrieBuilder {
 public:
  RxTrieBuilder();
  virtual ~RxTrieBuilder();

  // Add key string
  void AddKey(const string &key);

  // Build trie
  void Build();

  // Get id from key string.
  // Return -1 if key is not found or rx trie is not built yet.
  int GetIdFromKey(const string &key) const;

  // Returns a byte array of the image.
  // The instance owns the returned object.
  const char *GetImageBody() const;

  // Returns the size of the image.
  int GetImageSize() const;

  // Write image of trie
  void WriteImage(OutputFileStream *ofs) const;

 private:
  struct rx_builder *rx_builder_;

  DISALLOW_COPY_AND_ASSIGN(RxTrieBuilder);
};

}  // namespace rx
}  // namespace mozc

#endif  // MOZC_DICTIONARY_RX_RX_TRIE_BUILDER_H_