{"id":114,"date":"2008-03-08T13:45:15","date_gmt":"2008-03-08T13:45:15","guid":{"rendered":""},"modified":"2008-03-08T13:45:15","modified_gmt":"2008-03-08T13:45:15","slug":"114","status":"publish","type":"post","link":"https:\/\/www.poloo.org\/?p=114","title":{"rendered":"\u89e3\u91ca\u5668\u6a21\u5f0f(Robot pattern)"},"content":{"rendered":"

namespace DesignPattern.Interpreter
{
    public abstract class Expression
    {
        public abstract bool Interpret();
    } <\/p>\n

    public class Constant : Expression
    {
        private bool m_val; <\/p>\n

        public Constant(bool val)
        {
            this.m_val=val;
        } <\/p>\n

        public override bool Interpret()
        {
            return this.m_val;
        } <\/p>\n

        public override string ToString()
        {
            return this.m_val.ToString();
        }
    } <\/p>\n

    public class And : Expression
    {
        public Expression left,right;
        
        public And(Expression left,Expression right)
        {
            this.left=left;
            this.right=right;
        } <\/p>\n

        public override bool Interpret()
        {
            return left.Interpret()&&right.Interpret();
        } <\/p>\n

        public override string ToString()
        {
            return \"(\"+this.left.ToString()+\" && \"+this.right.ToString()+\")\";
        }
    } <\/p>\n

    public class or : Expression
    {
        public Expression left,right;
        
        public or(Expression left,Expression right)
        {
            this.left=left;
            this.right=right;
        } <\/p>\n

        public override bool Interpret()
        {
            return left.Interpret()||right.Interpret();
        } <\/p>\n

        public override string ToString()
        {
            return \"(\"+this.left.ToString()+\" || \"+this.right.ToString()+\")\";
        }
    } <\/p>\n

    public class Not : Expression
    {
        private Expression exp; <\/p>\n

        public Not(Expression exp)
        {
            this.exp=exp;
        } <\/p>\n

        public override bool Interpret()
        {
            return !exp.Interpret();
        } <\/p>\n

        public override string ToString()
        {
            return \"(! \"+exp.ToString()+\")\";
        }
    } <\/p>\n

    public class Client
    {
        public static void Main()
        {
            Expression exp=new or(new And(new Constant(true),new Constant(false)),
            new And(new Constant(true),new Not(new Constant(false))));
            Console.WriteLine(exp.ToString()+\"=\"+exp.Interpret());
        }
    }
}
<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"

namespace DesignPattern.Interprete...<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-114","post","type-post","status-publish","format-standard","hentry","category-Note"],"_links":{"self":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/114","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=114"}],"version-history":[{"count":0,"href":"https:\/\/www.poloo.org\/index.php?rest_route=\/wp\/v2\/posts\/114\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=114"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=114"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.poloo.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=114"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}