class1.cs

来自「来自DoFactory的设计模式, 由于是本人根据已有代码创建,没有NETOpt」· CS 代码 · 共 69 行

// Interpreter pattern -- Structural example  

using System;
using System.Collections;

namespace DoFactory.GangOfFour.Interpreter.Structural
{

    // MainApp test application 

    class MainApp
    {
        static void Main()
        {
            Context context = new Context();

            // Usually a tree 
            ArrayList list = new ArrayList();

            // Populate 'abstract syntax tree' 
            list.Add(new TerminalExpression());
            list.Add(new NonterminalExpression());
            list.Add(new TerminalExpression());
            list.Add(new TerminalExpression());

            // Interpret 
            foreach (AbstractExpression exp in list)
            {
                exp.Interpret(context);
            }

            // Wait for user 
            Console.Read();
        }
    }

    // "Context" 

    class Context
    {
    }

    // "AbstractExpression" 

    abstract class AbstractExpression
    {
        public abstract void Interpret(Context context);
    }

    // "TerminalExpression" 

    class TerminalExpression : AbstractExpression
    {
        public override void Interpret(Context context)
        {
            Console.WriteLine("Called Terminal.Interpret()");
        }
    }

    // "NonterminalExpression" 

    class NonterminalExpression : AbstractExpression
    {
        public override void Interpret(Context context)
        {
            Console.WriteLine("Called Nonterminal.Interpret()");
        }
    }
}