public static int AssignWeightsForBroadestNonLoopingPath(ProcedureFunctionChart pfc)
{
pfc.Nodes.ForEach(n => n.NodeColor = NodeColor.White);
pfc.Links.ForEach(n => n.Priority = null);
PfcStep start = (PfcStep)pfc.GetStartSteps()[0];
int retval = WeightAssignmentPropagationForBroadestNonLoopingPath(start);
pfc.Links.ForEach(n => { if (n.Priority < 0)
{
n.Priority = int.MinValue - n.Priority;
}
});
return(retval);
}
private void _TestStepToStepBinding()
{
string testName = "Step-to-Step binding, maintaining SFC Compliance";
Model model = new Model("SFC Test 1");
ProcedureFunctionChart pfc = new ProcedureFunctionChart(model, "SFC 1", "", Guid.NewGuid());
PfcStep s1 = (PfcStep)pfc.CreateStep("Alice", "", Guid.Empty);
PfcStep s2 = (PfcStep)pfc.CreateStep("Bob", "", Guid.Empty);
//SfcStep s3 = (SfcStep)pfc.CreateStep("Charlie", "", Guid.Empty);
pfc.Bind(s1, s2);
string structureString = PfcDiagnostics.GetStructure(pfc);
Console.WriteLine("After a " + testName + ", structure is \r\n" + structureString);
}
private static int WeightAssignmentPropagationForBroadestNonLoopingPath(PfcStep step)
{
if (step.NodeColor == NodeColor.Black)
{
return(int.MinValue);
}
if (!step.Successors.Any())
{
return(1); // We've reached a terminal step. (strictly, should be a transition.)
}
step.NodeColor = NodeColor.Black;
foreach (PfcLink link in step.Successors)
{
if (link.Priority == null)
{
link.Priority = WeightAssignmentPropagationForBroadestNonLoopingPath(((PfcTransition)link.Successor));
}
}
step.NodeColor = NodeColor.White;
return(step.Successors.Max(n => n.Priority.Value) + 1);
}