Method ValidateAsset

Source/Flow/Private/FlowAsset.cpp:246–300

}

EDataValidationResult UFlowAsset::ValidateAsset(FFlowMessageLog& MessageLog)
{
	// validate nodes
	for (const TPair<FGuid, UFlowNode*>& Node : ObjectPtrDecay(Nodes))
	{
		if (IsValid(Node.Value))
		{
			FText FailureReason;
			if (!IsNodeOrAddOnClassAllowed(Node.Value->GetClass(), &FailureReason))
			{
				const FString ErrorMsg =
					FailureReason.IsEmpty()
						? FString::Format(*ValidationError_NodeClassNotAllowed, {*Node.Value->GetClass()->GetName()})
						: FailureReason.ToString();

				MessageLog.Error(*ErrorMsg, Node.Value);
			}

			Node.Value->ValidationLog.Messages.Empty();
			Node.Value->ValidateNode();
			MessageLog.Messages.Append(Node.Value->ValidationLog.Messages);

			// Validate AddOns
			for (UFlowNodeAddOn* AddOn : Node.Value->GetFlowNodeAddOnChildren())
			{
				if (IsValid(AddOn))
				{
					ValidateAddOnTree(*AddOn, MessageLog);
				}
				else
				{
					const FString ErrorMsg = FString::Format(*ValidationError_NullAddOnNodeInstance, {*Node.Key.ToString()});
					MessageLog.Error(*ErrorMsg, this);
				}
			}
		}
		else
		{
			const FString ErrorMsg = FString::Format(*ValidationError_NullNodeInstance, {*Node.Key.ToString()});
			MessageLog.Error(*ErrorMsg, this);
		}
	}

	// if at least one error has been has been logged : mark the asset as invalid
	for (const TSharedRef<FTokenizedMessage>& Msg : MessageLog.Messages)
	{
		if (Msg->GetSeverity() == EMessageSeverity::Error)
		{
			return EDataValidationResult::Invalid;
		}
	}

	// otherwise, the asset is considered valid (even with warnings or notes)
	return EDataValidationResult::Valid;
}

bool UFlowAsset::IsNodeOrAddOnClassAllowed(const UClass* FlowNodeOrAddOnClass, FText* OutOptionalFailureReason) const
{