private static void AddToReversePostOrderListIterative(VarVersionNode root
, LinkedList <VarVersionNode> lst, HashSet <VarVersionNode> setVisited)
{
Dictionary <VarVersionNode, List <VarVersionEdge> > mapNodeSuccs = new Dictionary <
VarVersionNode, List <VarVersionEdge> >();
LinkedList <VarVersionNode> stackNode = new LinkedList <VarVersionNode>();
LinkedList <int> stackIndex = new LinkedList <int>();
stackNode.AddLast(root);
stackIndex.AddLast(0);
while (!(stackNode.Count == 0))
{
VarVersionNode node = stackNode.Last.Value;
int index = Sharpen.Collections.RemoveLast(stackIndex);
setVisited.Add(node);
List <VarVersionEdge> lstSuccs = mapNodeSuccs.ComputeIfAbsent(node, (VarVersionNode
n) => new List <VarVersionEdge>(n.succs));
for (; index < lstSuccs.Count; index++)
{
VarVersionNode succ = lstSuccs[index].dest;
if (!setVisited.Contains(succ))
{
stackIndex.AddLast(index + 1);
stackNode.AddLast(succ);
stackIndex.AddLast(0);
break;
}
}
if (index == lstSuccs.Count)
{
lst.AddFirst(node);
Sharpen.Collections.RemoveLast(stackNode);
}
}
}
public virtual VarVersionNode CreateNode(VarVersionPair ver)
{
VarVersionNode node;
nodes.AddWithKey(node = new VarVersionNode(ver.var, ver.version), ver);
return(node);
}
public VarVersionEdge(int type, VarVersionNode source, VarVersionNode dest)
{
// FIXME: can be removed?
this.type = type;
this.source = source;
this.dest = dest;
this.hashCode__ = source.GetHashCode() ^ dest.GetHashCode() + type;
}
public virtual bool IsDominatorSet(VarVersionNode node, HashSet <VarVersionNode> domnodes
)
{
if (domnodes.Count == 1)
{
var enumerator = domnodes.GetEnumerator();
enumerator.MoveNext();
return(engine.IsDominator(node, enumerator.Current));
}
else
{
HashSet <VarVersionNode> marked = new HashSet <VarVersionNode>();
if (domnodes.Contains(node))
{
return(true);
}
LinkedList <VarVersionNode> lstNodes = new LinkedList <VarVersionNode>();
lstNodes.AddLast(node);
while (!(lstNodes.Count == 0))
{
VarVersionNode nd = lstNodes.RemoveAtReturningValue(0);
if (marked.Contains(nd))
{
continue;
}
else
{
marked.Add(nd);
}
if ((nd.preds.Count == 0))
{
return(false);
}
foreach (VarVersionEdge edge in nd.preds)
{
VarVersionNode pred = edge.source;
if (!marked.Contains(pred) && !domnodes.Contains(pred))
{
lstNodes.AddLast(pred);
}
}
}
}
return(true);
}