public int Analyze()
{
this.AsIGraphNode().Clear();
if (this.Equals(End))
{
criticalPathLength = 0;
return(criticalPathLength);
}
if (criticalPaths.Any())
{
return(criticalPathLength);
}
criticalPathLength = -1;
foreach (IGraphEdge edge in registeredEdges)
{
if (edge.GetStartNode().Equals(this))
{
IGraphNode node = edge.GetEndNode();
int candidate = node.Analyze();
node.MarkAsNormal();
if (candidate < 0)
{
node.MarkAsLoose();
loosePaths.Add(edge);
}
else if (candidate > criticalPathLength)
{
criticalPathLength = candidate;
criticalPaths.Clear();
criticalPaths.Add(edge);
}
else if (candidate == criticalPathLength)
{
criticalPaths.Add(edge);
}
}
}
if (criticalPathLength < 0)
{
return(criticalPathLength);
}
if (this.Equals(Start) && this.criticalPathLength >= 0)
{
this.AsIGraphNode().MarkAsCritical();
}
return(criticalPathLength + (int)duration);
}