Function HasBitmapFromBitmaps

cpp/src/arrow/util/bit_block_counter.h:413–422

  BinaryBitBlockCounter binary_counter_;

  static HasBitmap HasBitmapFromBitmaps(bool has_left, bool has_right) {
    switch (static_cast<int>(has_left) + static_cast<int>(has_right)) {
      case 0:
        return HasBitmap::NONE;
      case 1:
        return HasBitmap::ONE;
      default:  // 2
        return HasBitmap::BOTH;
    }
  }
};

// Functional-style bit block visitors.