An Implementation of Regular Expression Parser in C#

using System;
using System.Collections.Generic;
using System.Text;

namespace RegularExpression
{
  /// <summary>
  /// see NfaDiagram.txt file.
  /// this class represent a box in that diagram.
  /// this class helps constructing the NFA from the regular expression
  /// </summary>
  class NfaExpression
  {
    public NfaExpression()
    {
      m_stateStart = new State();
      m_stateFinal = new State();

    }
    public NfaExpression(State stateFrom, State stateTo)
    {
      m_stateStart = stateFrom;
      m_stateFinal = stateTo;

    }

    State m_stateStart = null;
    State m_stateFinal = null;

    public State StartState()
    {
      return m_stateStart;
    }

    public State FinalState()
    {
      return m_stateFinal;
    }


  }
}