static void CKVerifyTreeNodeWithParent()

in ComponentKit/Core/Scope/CKTreeVerificationHelpers.mm [86:126]
38 lines of code
8 McCabe index (conditional complexity)

static void CKVerifyTreeNodeWithParent(const CKRootTreeNode &rootNode, const RCLayout &layout, CKTreeNode *parentNode)
{
  if (layout.component == nil) {
    return;
  }

  CKTreeNode *treeNode = nil;
  if ([layout.component isKindOfClass:[CKComponent class]]) {
    auto const c = (CKComponent *)layout.component;
    if (c.treeNode) {
      treeNode = c.treeNode;
      auto const registeredParentNode = rootNode.parentForNodeIdentifier(treeNode.nodeIdentifier);
      if (registeredParentNode == nil) {
        RCCFailAssertWithCategory(RCComponentCompactDescription(c),
                                  @"Missing link from node to its parent on the CKRootTreeNode; \n"
                                  @"make sure your component returns all its children on the RCIterable methods.\n"
                                  @"Component:%@\n"
                                  @"Parent component:%@",
                                  c,
                                  parentNode.component);
      } else if (registeredParentNode != parentNode) {
        RCCFailAssertWithCategory(RCComponentCompactDescription(c),
                                  @"Incorrect link from node to its parent on the CKRootTreeNode; \n"
                                  @"make sure your component returns all its children on the RCIterable methods.\n"
                                  @"Component:%@\n"
                                  @"Parent component:%@\n"
                                  @"Registered parent component:%@",
                                  c,
                                  parentNode.component,
                                  registeredParentNode.component);
      }
    }
  }

  // Continue the check on the children; if the component has no tree node, pass the previous one.
  if (layout.children) {
    for (const auto &childLayout : *layout.children) {
      CKVerifyTreeNodeWithParent(rootNode, childLayout.layout, treeNode ?: parentNode);
    }
  }
}