src/storage/louds/bit_stream.h

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#ifndef MOZC_STORAGE_LOUDS_BIT_STREAM_H_
#define MOZC_STORAGE_LOUDS_BIT_STREAM_H_

#include <string>

#include "base/port.h"

namespace mozc {
namespace storage {
namespace louds {

// Stream taking 'bits', especially designed for building a LOUDS trie.
class BitStream {
 public:
  BitStream();

  const string &image() const { return image_; }
  size_t num_bits() const { return num_bits_; }
  size_t ByteSize() const { return image_.length(); }

  void PushBit(int bit);

  // Fills the padding (0-bit) until the size is aligned to 32bit boundary.
  void FillPadding32();

 private:
  string image_;
  size_t num_bits_;

  DISALLOW_COPY_AND_ASSIGN(BitStream);
};

}  // namespace louds
}  // namespace storage
}  // namespace mozc

#endif  // MOZC_STORAGE_LOUDS_BIT_STREAM_H_