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#ifndef MOZC_CONVERTER_SEGMENTER_H_
#define MOZC_CONVERTER_SEGMENTER_H_

#include <cstddef>
#include <cstdint>
#include <memory>

#include "absl/types/span.h"
#include "converter/node.h"
#include "data_manager/data_manager.h"

namespace mozc {

class Segmenter {
 public:
  static std::unique_ptr<Segmenter> CreateFromDataManager(
      const DataManager& data_manager);

  // This class does not take the ownership of pointer parameters.
  Segmenter(size_t l_num_elements, size_t r_num_elements,
            absl::Span<const uint16_t> l_table,
            absl::Span<const uint16_t> r_table,
            absl::Span<const char> bitarray_data,
            absl::Span<const uint16_t> boundary_data);
  Segmenter(const Segmenter&) = delete;
  Segmenter& operator=(const Segmenter&) = delete;

  bool IsBoundary(const Node& lnode, const Node& rnode,
                  bool is_single_segment) const;
  bool IsBoundary(uint16_t rid, uint16_t lid) const;
  int32_t GetPrefixPenalty(uint16_t lid) const;
  int32_t GetSuffixPenalty(uint16_t rid) const;

 private:
  const size_t l_num_elements_ = 0;
  const size_t r_num_elements_ = 0;
  const absl::Span<const uint16_t> l_table_;
  const absl::Span<const uint16_t> r_table_;
  const absl::Span<const char> bitarray_data_;
  const absl::Span<const uint16_t> boundary_data_;
};

}  // namespace mozc

#endif  // MOZC_CONVERTER_SEGMENTER_H_
