replaceChild method

Implementation

@override
DartBlockValueTreeBooleanNode? replaceChild(
  DartBlockValueTreeBooleanNode oldChild,
  DartBlockValueTreeBooleanNode? newChild,
) {
  if (newChild != null &&
      newChild is! DartBlockValueTreeBooleanGenericNumberNode) {
    if (parent == null) {
      newChild.parent = null;

      return newChild;
    } else {
      return parent?.replaceChild(this, newChild);
    }
  }
  if (leftChild == oldChild) {
    leftChild = newChild as DartBlockValueTreeBooleanGenericNumberNode?;
    leftChild?.parent = this;
  } else if (rightChild == oldChild) {
    rightChild = newChild as DartBlockValueTreeBooleanGenericNumberNode?;
    rightChild?.parent = this;
  }
  if (leftChild == null) {
    operator = null;
    if (parent == null) {
      rightChild?.parent = null;

      return rightChild;
    } else {
      return parent?.replaceChild(this, rightChild);
    }
  }
  if (rightChild == null && operator == null) {
    if (parent == null) {
      leftChild?.parent = null;

      return leftChild;
    } else {
      return parent?.replaceChild(this, leftChild);
    }
  }

  return this;
}