public static IReadOnlyCollection <Guid> CheckUniqueIds(IEnumerable <MemoryStream> validStreams)
{
HashSet <Guid> result = new HashSet <Guid>();
HashSet <Guid> existing = new HashSet <Guid>();
foreach (var stream in validStreams)
{
stream.Position = 0;
var d = XDocument.Load(stream);
var root = d.Element(Root);
//TODO: Make sure the docs for this function (and the call chain) clarify that unsupported versions will be silently ignored.
string encounteredVersion = root.Attribute("xmlversion")?.Value ?? "";
if (XmlVersionRead.Contains(encounteredVersion))
{
var nodeElements = root.Elements("Node");
foreach (var guid in nodeElements.Select(n => Id <NodeTemp> .Parse(n.Attribute("Id").Value).Guid))
{
if (!existing.Add(guid))
{
result.Add(guid);
}
}
}
}
return(result);
}
public XmlGraphData <TUIRawData, TEditorData> Read(Stream stream)
{
object documentID = new object();
stream.Position = 0;
var d = XDocument.Load(stream);
var root = d.Element(Root);
//TODO: Should possibly treat this as a missing file rather than crashing the editor
string encounteredVersion = root.Attribute("xmlversion")?.Value ?? "";
if (!XmlVersionRead.Contains(encounteredVersion))
{
throw new DeserializerVersionMismatchException(string.Join(", ", XmlVersionRead), encounteredVersion);
}
var nodeElements = root.Elements("Node");
var filteredNodes = m_filter != null?nodeElements.Where(n => m_filter(ReadType(n))) : nodeElements;
IEnumerable <Either <GraphAndUI <TUIRawData>, LoadError> > editables = filteredNodes.Select(n => ReadEditable(n, m_datasource, documentID)).Evaluate();
var allnodes = new Dictionary <Id <NodeTemp>, GraphAndUI <TUIRawData> >();
var errors = new List <LoadError>();
foreach (var editable in editables)
{
editable.Do(e =>
{
allnodes[e.GraphData.NodeId] = new GraphAndUI <TUIRawData>(e.GraphData, e.UIData);
}, a =>
{
errors.Add(a);
});
}
var links = ReadLinks(n => allnodes.ContainsKey(n), root);
foreach (var link in links)
{
var id1 = link.Item1.Item2;
var id2 = link.Item2.Item2;
if (allnodes.ContainsKey(id1) && allnodes.ContainsKey(id2)) //If copy/pasting a piece of graph, linked nodes may not exist
{
IConversationNodeData node1 = allnodes[id1].GraphData;
IConversationNodeData node2 = allnodes[id2].GraphData;
var unknownNode1 = node1 as UnknownEditable;
var unknownNode2 = node2 as UnknownEditable;
if (unknownNode1 != null)
{
unknownNode1.AddConnector(link.Item1.Item1);
}
if (unknownNode2 != null)
{
unknownNode2.AddConnector(link.Item2.Item1);
}
Output connector1 = node1.Connectors.SingleOrDefault(c => c.Id == link.Item1.Item1);
Output connector2 = node2.Connectors.SingleOrDefault(c => c.Id == link.Item2.Item1);
if (unknownNode1 != null)
{
unknownNode1.AllowConnection(connector1, connector2);
}
if (unknownNode2 != null)
{
unknownNode2.AllowConnection(connector1, connector2);
}
if (connector1 == null || connector2 == null)
{
errors.Add(new LoadError("Connector does not exist"));
}
else
{
bool success = connector1.ConnectTo(connector2, false);
if (!success)
{
success = connector1.ConnectTo(connector2, true);
if (!success)
{
errors.Add(new LoadError("Tried to connect two connectors that could not be connected")); //TODO: Might be better to add the connection in violation of the rule to avoid modifying the file then have an error checker
}
}
}
}
}
foreach (var node in root.Elements("Node"))
{
Id <NodeTemp> nodeID = Id <NodeTemp> .Parse(node.Attribute("Id").Value);
//ID<NodeTypeTemp> nodeType = ID<NodeTypeTemp>.Parse(node.Attribute("Guid").Value);
int outputIndex = 0; //no idea where the output guids come from so just assume they're ordered
//TODO: Remove support for legacy linking
foreach (var output in node.Elements("Output"))
{
Id <TConnector> outputGuid = Id <TConnector> .Parse(output.Attribute("guid").Value);
bool legacyNodeOutput = Id <TConnector> .Parse("1583e20c-c725-48c3-944d-1ba40c3ebdf4") == outputGuid;
var outputConnectors = legacyNodeOutput ? allnodes[nodeID].GraphData.Connectors : allnodes[nodeID].GraphData.Connectors.ElementAt(outputIndex).Only();
var connectedNodes = output.Elements("Link").Select(l => Id <NodeTemp> .Parse(l.Attribute("To").Value));
foreach (var connectedID in connectedNodes)
{
var connectedNode = allnodes[connectedID].GraphData;
var orderedConnectors = connectedNode.Connectors.OrderBy(o => o.Definition.Id != ConnectorDefinitionData.InputDefinitionId); //Put any inputs at the front of the list
bool success = false;
foreach (var connector in orderedConnectors)
{
if (success)
{
break;
}
foreach (var outputConnector in outputConnectors)
{
if (success)
{
break;
}
if (connector.ConnectTo(outputConnector, false))
{
success = true;
}
else
{
connector.ConnectTo(outputConnector, true);
}
}
}
if (!success)
{
errors.Add(new LoadError("Could not link nodes"));
}
}
outputIndex++;
}
}
return(new XmlGraphData <TUIRawData, TEditorData>(allnodes.Values, m_editorDataDeserializer.Read(root), new ReadOnlyCollection <LoadError>(errors), documentID));
}