Method PostDecode

cpp/src/arrow/compute/row/encode_internal.cc:207–220

  }

  static void PostDecode(const KeyColumnArray& input, KeyColumnArray* output,
                         LightContext* ctx) {
    // Make sure that metadata and lengths are compatible.
    DCHECK(output->metadata().is_fixed_length == input.metadata().is_fixed_length);
    DCHECK(output->metadata().fixed_length == 0 && input.metadata().fixed_length == 1);
    DCHECK(output->length() == input.length());
    constexpr int buffer_index = 1;
    DCHECK(input.data(buffer_index) != nullptr);
    DCHECK(output->mutable_data(buffer_index) != nullptr);

    util::bit_util::bytes_to_bits(
        ctx->hardware_flags, static_cast<int>(input.length()), input.data(buffer_index),
        output->mutable_data(buffer_index), output->bit_offset(buffer_index));
  }
};

}  // namespace