Method AppendNextOffset

cpp/src/arrow/array/builder_nested.h:330–334

  }

  Status AppendNextOffset() {
    ARROW_RETURN_NOT_OK(this->ValidateOverflow(0));
    const int64_t num_values = this->value_builder_->length();
    return this->offsets_builder_.Append(static_cast<offset_type>(num_values));
  }

  Status FinishInternal(std::shared_ptr<ArrayData>* out) override {
    ARROW_RETURN_NOT_OK(AppendNextOffset());