Method moveNext

bolt/exec/tests/utils/Cursor.cpp:325–340

Fetches another batch from the task queue. Starts the task if not started yet.

  /// Fetches another batch from the task queue.
  /// Starts the task if not started yet.
  bool moveNext() override {
    start();
    if (error_) {
      std::rethrow_exception(error_);
    }

    // Task might be aborted before start.
    checkTaskError();
    current_ = queue_->dequeue();

    checkTaskError();
    if (!current_) {
      atEnd_ = true;
    }
    return current_ != nullptr;
  }

  void setNoMoreSplits() override {
    BOLT_CHECK(!noMoreSplits_);