private DerivedGraph BuildNextOrderGraph(DerivedGraph gr)
{
DirectedGraph <StructureNode> newGraph = new DirectedGraphImpl <StructureNode>();
StructureNode newEntry = gr.Intervals[0];
foreach (Interval interval in gr.Intervals)
{
newGraph.Nodes.Add(interval);
}
foreach (Interval interval in gr.Intervals)
{
foreach (StructureNode node in interval.Nodes)
{
foreach (StructureNode succ in gr.Graph.Successors(node))
{
if (succ.Interval != interval && !newGraph.ContainsEdge(interval, succ.Interval))
{
newGraph.AddEdge(interval, succ.Interval);
}
}
}
}
return(new DerivedGraph(newGraph, newEntry, ib.BuildIntervals(newGraph, newEntry)));
}
public void BuildIntervals(DerivedGraph derGraph)
{
if (derGraph == null)
throw new ArgumentNullException("derGraph");
if (derGraph.Entry == null)
throw new ArgumentException("cfg graph must be non-null.", "derGraph");
var intSeq = derGraph.Intervals; // The sequence of intervals in this graph
var headerSeq = new WorkList<StructureNode>(); // The sequence of interval header nodes
var beenInH = new List<StructureNode>(); // The set of nodes that have been in the above sequence at some stage
headerSeq.Add(derGraph.Entry);
beenInH.Add(derGraph.Entry);
StructureNode header;
while (headerSeq.GetWorkItem(out header))
{
var newInt = new Interval(intervalID++, header);
// Process each succesive node in the interval until no more nodes can be added to the interval.
for (int i = 0; i < newInt.Nodes.Count; i++)
{
var curNode = newInt.Nodes[i];
// Process each child of the current node
for (int j = 0; j < curNode.OutEdges.Count; j++)
{
var succ = curNode.OutEdges[j];
// Only further consider the current child if it isn't already in the interval
if (!newInt.Nodes.Contains(succ))
{
// If the current child has all its parents
// inside the interval, then add it to the interval. Remove it from the header
// sequence if it is on it.
if (IsSubSetOf(succ.InEdges, newInt))
{
newInt.AddNode(succ);
headerSeq.Remove(succ);
}
// Otherwise, add it to the header sequence if it hasn't already been in it.
else if (!beenInH.Contains(succ))
{
headerSeq.Add(succ);
beenInH.Add(succ);
}
}
}
}
// Add the new interval to the sequence of intervals
intSeq.Add(newInt);
}
}
public DerivedSequenceBuilder(ProcedureStructure proc)
{
this.graphs = proc.DerivedGraphs;
this.ib = new IntervalBuilder();
var gr = BuildDerivedGraph(proc.Nodes, proc.EntryNode);
graphs.Add(gr);
while (gr.Graph.Nodes.Count > 1)
{
DerivedGraph newGr = BuildNextOrderGraph(gr);
if (newGr.Graph.Nodes.Count == gr.Graph.Nodes.Count)
{
return;
}
graphs.Add(newGr);
gr = newGr;
}
}
public void BuildIntervals(DerivedGraph derGraph)
{
if (derGraph == null)
{
throw new ArgumentNullException("derGraph");
}
if (derGraph.Entry == null)
{
throw new ArgumentException("cfg graph must be non-null.", "derGraph");
}
var intSeq = derGraph.Intervals; // The sequence of intervals in this graph
var headerSeq = new WorkList <StructureNode>(); // The sequence of interval header nodes
var beenInH = new List <StructureNode>(); // The set of nodes that have been in the above sequence at some stage
headerSeq.Add(derGraph.Entry);
beenInH.Add(derGraph.Entry);
StructureNode header;
while (headerSeq.GetWorkItem(out header))
{
var newInt = new Interval(intervalID++, header);
// Process each succesive node in the interval until no more nodes can be added to the interval.
for (int i = 0; i < newInt.Nodes.Count; i++)
{
var curNode = newInt.Nodes[i];
// Process each child of the current node
for (int j = 0; j < curNode.OutEdges.Count; j++)
{
var succ = curNode.OutEdges[j];
// Only further consider the current child if it isn't already in the interval
if (!newInt.Nodes.Contains(succ))
{
// If the current child has all its parents
// inside the interval, then add it to the interval. Remove it from the header
// sequence if it is on it.
if (IsSubSetOf(succ.InEdges, newInt))
{
newInt.AddNode(succ);
headerSeq.Remove(succ);
}
// Otherwise, add it to the header sequence if it hasn't already been in it.
else if (!beenInH.Contains(succ))
{
headerSeq.Add(succ);
beenInH.Add(succ);
}
}
}
}
// Add the new interval to the sequence of intervals
intSeq.Add(newInt);
}
}