Method Reset

cpp/src/arrow/util/rle_encoding_internal.h:276–287

  }

  void Reset(const RunType& run, rle_size_t value_bit_width) noexcept {
    remaining_count_ = run.values_count();
    if constexpr (std::is_same_v<value_type, bool>) {
      // ARROW-18031:  just check the LSB of the next byte and move on.
      // If we memcpy + FromLittleEndian, we have potential undefined behavior
      // if the bool value isn't 0 or 1.
      value_ = *run.raw_data_ptr() & 1;
    } else {
      value_ = static_cast<value_type>(
          ::arrow::bit_util::FromLittleEndian(run.value_little_endian()));
    }
  }

  /// Return the number of values that can be advanced.
  rle_size_t remaining() const { return remaining_count_; }