Function YGNodeSetChildren

third-party/yoga/src/yoga/YGNode.cpp:226–265

}

void YGNodeSetChildren(
    const YGNodeRef ownerRef,
    const YGNodeRef* childrenRefs,
    const size_t count) {
  auto owner = resolveRef(ownerRef);
  auto children = reinterpret_cast<yoga::Node* const*>(childrenRefs);

  if (owner == nullptr) {
    return;
  }

  const std::vector<yoga::Node*> childrenVector = {children, children + count};
  if (childrenVector.empty()) {
    if (owner->getChildCount() > 0) {
      for (auto* child : owner->getChildren()) {
        child->setLayout({});
        child->setOwner(nullptr);
      }
      owner->setChildren({});
      owner->markDirtyAndPropagate();
    }
  } else {
    if (owner->getChildCount() > 0) {
      for (auto* oldChild : owner->getChildren()) {
        // Our new children may have nodes in common with the old children. We
        // don't reset these common nodes.
        if (std::find(childrenVector.begin(), childrenVector.end(), oldChild) ==
            childrenVector.end()) {
          oldChild->setLayout({});
          oldChild->setOwner(nullptr);
        }
      }
    }
    owner->setChildren(childrenVector);
    for (yoga::Node* child : childrenVector) {
      child->setOwner(owner);
    }
    owner->markDirtyAndPropagate();
  }
}

YGNodeRef YGNodeGetChild(const YGNodeRef nodeRef, const size_t index) {
  const auto node = resolveRef(nodeRef);