simulation.cs

Data Structures and Algorithms with Object-Oriented Design Patterns in C# 这本书的范例代码dll自己反编译的source

namespace Opus6
{
    using System;

    [Copyright("Copyright (c) 2001 by Bruno R. Preiss, P.Eng."), Version("$Id: Simulation.cs,v 1.4 2001/10/28 19:50:09 brpreiss Exp $")]
    public class Simulation
    {
        public Simulation()
        {
            this.eventList = new LeftistHeap();
        }

        public void Run(double timeLimit)
        {
            bool flag1 = false;
            int num1 = 0;
            RandomVariable variable1 = new ExponentialRV(100);
            RandomVariable variable2 = new ExponentialRV(100);
            this.eventList.Enqueue(new Event(EventType.ARRIVAL, 0));
            while (!this.eventList.IsEmpty)
            {
                Event event1 = (Event) this.eventList.DequeueMin();
                double num2 = event1.Time;
                if (num2 > timeLimit)
                {
                    this.eventList.Purge();
                    return;
                }
                Opus6.Console.WriteLine(event1);
                switch (event1.Type)
                {
                    case EventType.ARRIVAL:
                        if (flag1)
                        {
                            break;
                        }
                        flag1 = true;
                        this.eventList.Enqueue(new Event(EventType.DEPARTURE, num2 + variable1.Next));
                        goto Label_00B7;

                    case EventType.DEPARTURE:
                        if (num1 != 0)
                        {
                            goto Label_00DA;
                        }
                        flag1 = false;
                        goto Label_00F8;

                    default:
                    {
                        continue;
                    }
                }
                num1++;
            Label_00B7:
                this.eventList.Enqueue(new Event(EventType.ARRIVAL, num2 + variable2.Next));
                continue;
            Label_00DA:
                num1--;
                this.eventList.Enqueue(new Event(EventType.DEPARTURE, num2 + variable1.Next));
            Label_00F8:;
            }
        }


        private PriorityQueue eventList;


        private class Event : Association
        {
            internal Event(Simulation.EventType type, double time) : base(time, (int) type)
            {
            }

            public override string ToString()
            {
                switch (this.Type)
                {
                    case Simulation.EventType.ARRIVAL:
                        return ("Event {" + this.Time + ", arrival}");

                    case Simulation.EventType.DEPARTURE:
                        return ("Event {" + this.Time + ", departure}");
                }
                return null;
            }


            internal double Time
            {
                get
                {
                    return (double) base.Key;
                }
            }

            internal Simulation.EventType Type
            {
                get
                {
                    return (Simulation.EventType) ((int) base.Value);
                }
            }

        }

        private enum EventType
        {
            ARRIVAL,
            DEPARTURE
        }
    }
}