Method validate

source/MaterialXCore/Interface.cpp:148–208

}

bool PortElement::validate(string* message) const
{
    bool res = true;

    NodePtr connectedNode = getConnectedNode();
    if (hasNodeName() || hasOutputString())
    {
        NodeGraphPtr nodeGraph = resolveNameReference<NodeGraph>(getNodeName());
        if (!nodeGraph)
        {
            validateRequire(connectedNode != nullptr, res, message, "Invalid port connection");
        }
    }
    if (connectedNode)
    {
        const string& outputString = getOutputString();
        if (!outputString.empty())
        {
            OutputPtr output;
            if (hasNodeName())
            {
                NodeDefPtr nodeDef = connectedNode->getNodeDef();
                output = nodeDef ? nodeDef->getOutput(outputString) : OutputPtr();
                if (output)
                {
                    validateRequire(connectedNode->getType() == MULTI_OUTPUT_TYPE_STRING, res, message,
                                    "Multi-output type expected in port connection");
                }
            }
            else if (hasNodeGraphString())
            {
                NodeGraphPtr nodeGraph = resolveNameReference<NodeGraph>(getNodeGraphString());
                if (nodeGraph)
                {
                    output = nodeGraph->getOutput(outputString);
                    if (nodeGraph->getNodeDef())
                    {
                        validateRequire(nodeGraph->getOutputCount() > 1, res, message,
                                        "Multi-output type expected in port connection");
                    }
                }
            }
            else
            {
                // Document has no concept of a multioutput type
                output = getDocument()->getOutput(outputString);
            }
            validateRequire(output != nullptr, res, message, "No output found for port connection");

            if (output)
            {
                validateRequire(getType() == output->getType(), res, message, "Mismatched types in port connection");
            }
        }
        else if (connectedNode->getType() != MULTI_OUTPUT_TYPE_STRING)
        {
            validateRequire(getType() == connectedNode->getType(), res, message, "Mismatched types in port connection");
        }