public static CDeltaAlgorithm Init(FA g, Int32 c, HashSet <CGraphNode> set)
{
//Make some checks on the input arguments
// Create algorithm
CDeltaAlgorithm newObjectAlgorithm = new CDeltaAlgorithm(g, c, set);
return(newObjectAlgorithm);
}
public HashSet <CGraphNode> Start()
{
GraphLibrary.CGraphNode Qprime, Q;
CGraphEdge e;
CCharRangeSet set;
//q0 ← -closure({n0});
HashSet <CGraphNode> q0 = CEclosureAlgorithm.Init(m_NFA, new HashSet <CGraphNode>()
{
m_NFA.M_Initial
}).Start();
m_NFA.UpdateAlphabet();
// Create DFA
m_DFA = new FA();
// DEBUG
m_reporting.AddDFA(0, m_DFA);
m_DFAInfo = new FAGraphQueryInfo(m_DFA, FA.m_FAINFOKEY);
m_configurations = new CConfigurations(m_DFA, m_NFA);
m_configurations.CreateDFANode(q0);
//WorkList ← { q0};
m_workList.Enqueue(q0);
while (m_workList.Count != 0)
{
HashSet <CGraphNode> q = m_workList.Dequeue();
Q = m_configurations.GetDFANode(q);
// ********* DEBUG *************
CSubsetConstructionReporting.IterationRecord cRecord = m_reporting.AddIteration(0, q, Q);
// for each NFA alphabet character
foreach (CCharRange range in m_NFA.M_Alphabet)
{
foreach (Int32 i in range)
{
CDeltaAlgorithm delta = CDeltaAlgorithm.Init(m_NFA, i, q);
HashSet <CGraphNode> deltaResult = delta.Start();
CEclosureAlgorithm eClosure = CEclosureAlgorithm.Init(m_NFA, deltaResult);
HashSet <CGraphNode> qprime = eClosure.Start();
if (qprime.Count != 0)
{
Qprime = m_configurations.GetDFANode(qprime);
if (Qprime == null)
{
m_workList.Enqueue(qprime);
Qprime = m_configurations.CreateDFANode(qprime);
}
// Check if an edge between Q and Qprime alredy exists
e = m_DFA.Edge(Q, Qprime);
if (e == null)
{
e = m_DFA.AddGraphEdge <CGraphEdge, CGraphNode>(Q, Qprime, GraphType.GT_DIRECTED);
set = new CCharRangeSet(false);
m_DFAInfo.SetDFAEdgeTransitionCharacterSet(e, set);
}
else
{
set = m_DFAInfo.GetDFAEdgeTransitionCharacterSet(e);
}
set.AddRange(i);
// ********** DEBUG ************
CSubsetConstructionReporting.EdgeRecord charRecord = cRecord.AddEdgeRecord(deltaResult, qprime, e);
charRecord.AddCharacterCode(i);
}
}
}
}
m_DFA.UpdateAlphabet();
m_DFA.RegisterGraphPrinter(new FAGraphVizPrinter(m_DFA, new UOPCore.Options <ThompsonOptions>()));
m_DFA.Generate(@"mergeDFA.dot", true);
// DEBUG
m_reporting.Report("SubsetREPORT.txt");
return(null);
}