public REG_EXP(string regExp_str)
{
this.regExp_str = regExp_str;
nfaGraph = new NFA_GRAPH(regExp_str);
eClosureGraph = new E_CLOSURE_GRAPH(nfaGraph);
dfaGraph = new DFA_GRAPH(eClosureGraph);
}
public NFA_GRAPH(string regExp_str)
{
regExp = regExp_str;
NFA_GRAPH nfaGraph = null;
nfaGraph = Get_NFAFromRE(0, this.regExp.Length, null);
startNode = nfaGraph.startNode;
endNode = nfaGraph.endNode;
NODE.ClearCount();
}
public E_CLOSURE_GRAPH(NFA_GRAPH nfaGraph)
{
if (nfaGraph != null)
{
nodesStack = new Stack <NODE>();
nodesStack.Push(nfaGraph.startNode);
StartNode = Get_EClosureNode(nodesStack);
}
E_CLOSURE_NODE.ClearCount();
}