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#ifndef MOZC_DICTIONARY_POS_GROUP_H_
#define MOZC_DICTIONARY_POS_GROUP_H_

#include <cstdint>

#include "absl/base/attributes.h"

namespace mozc {
namespace dictionary {

// Manages pos grouping rule.
// This class holds a pointer to the array managed by DataManager, so pass it by
// value like string_view.
class PosGroup {
 public:
  explicit PosGroup(const uint8_t *lid_group ABSL_ATTRIBUTE_LIFETIME_BOUND)
      : lid_group_(lid_group) {}

  PosGroup(const PosGroup &) = default;
  PosGroup &operator=(const PosGroup &) = default;

  // Returns grouped pos id based on an array pre-generated from
  // data/rules/user_segment_history_pos_group.def.
  inline uint8_t GetPosGroup(const uint16_t lid) const {
    return lid_group_[lid];
  }

 private:
  const uint8_t *lid_group_;
};

}  // namespace dictionary
}  // namespace mozc

#endif  // MOZC_DICTIONARY_POS_GROUP_H_
