public void UpdateOutputTerminals(int outputTerminalCount)
{
AutoBorrowNodeFacade nodeFacade = AutoBorrowNodeFacade.GetNodeFacade(this);
var immutableReferenceType = NITypes.Void.CreateImmutableReference();
int currentOutputTerminalCount = OutputTerminals.Count();
if (currentOutputTerminalCount < outputTerminalCount)
{
for (; currentOutputTerminalCount < outputTerminalCount; ++currentOutputTerminalCount)
{
var terminal = CreateTerminal(Direction.Output, immutableReferenceType, "outer lifetime");
nodeFacade[terminal] = new SimpleTerminalFacade(terminal, terminal.GetTypeVariableSet().CreateReferenceToNewTypeVariable());
}
}
else if (currentOutputTerminalCount > outputTerminalCount)
{
int i = currentOutputTerminalCount - 1;
while (i >= 0 && currentOutputTerminalCount > outputTerminalCount)
{
Terminal outputTerminal = OutputTerminals.ElementAt(i);
if (!outputTerminal.IsConnected)
{
RemoveTerminalAtIndex(outputTerminal.Index);
--currentOutputTerminalCount;
}
--i;
}
}
}
protected override void VisitNode(Node node)
{
TypeVariableSet typeVariableSet = node.GetTypeVariableSet();
AutoBorrowNodeFacade nodeFacade = AutoBorrowNodeFacade.GetNodeFacade(node);
var primitive = node as PrimitiveTypeNode;
var selfTypeNode = node as SelfTypeNode;
if (primitive != null)
{
nodeFacade[primitive.OutputTerminal] = new SimpleTerminalFacade(
primitive.OutputTerminal,
typeVariableSet.CreateTypeVariableReferenceFromNIType(primitive.Type));
return;
}
if (selfTypeNode != null)
{
foreach (Terminal inputTerminal in selfTypeNode.InputTerminals)
{
TypeVariableReference typeVariable = typeVariableSet.CreateReferenceToNewTypeVariable();
nodeFacade[inputTerminal] = new SimpleTerminalFacade(inputTerminal, typeVariable);
}
return;
}
throw new NotSupportedException($"Unsupported node type: {node.GetType().Name}");
}
protected override void VisitWire(Wire wire)
{
TypeVariableReference wireTypeVariable = wire.GetTypeVariableSet()
.CreateReferenceToNewTypeVariable(Enumerable.Empty <Constraint>());
AutoBorrowNodeFacade wireFacade = AutoBorrowNodeFacade.GetNodeFacade(wire);
foreach (var terminal in wire.Terminals)
{
wireFacade[terminal] = new SimpleTerminalFacade(terminal, wireTypeVariable);
}
}