设计模式-Prototype(通过复制构造函数实现自我复制)-（创建型模式）

Posted 2021-03-21 fourmi_gsj

以下代码来源： 设计模式精解－GoF 23种设计模式解析附C++实现源码

//Prototype.h

#pragma once
class Prototype {
public:
    virtual ~Prototype();
    virtual Prototype* clone() const = 0;
protected:
    Prototype();
private:
};

class concreatePrototype :public Prototype {
public:
    concreatePrototype();
    ~concreatePrototype();
    concreatePrototype(const concreatePrototype& cp);
    Prototype* clone()const;
private:
protected:

};

//Prototype.cpp

#include"Prototype.h"
#include<iostream>
#include<string>
Prototype::Prototype(){}
Prototype::~Prototype(){}
Prototype* Prototype::clone()const {
    return 0;
}
concreatePrototype::concreatePrototype(){}
concreatePrototype::~concreatePrototype(){}
concreatePrototype::concreatePrototype(const concreatePrototype& cp) {
    std::cout << "ConcreatePrototype Copy." << std::endl;
}
Prototype* concreatePrototype::clone()const
{

    return (new concreatePrototype(*this));
}

//main.cpp

#include"Prototype.h"

int main(int args, char* argv)
{
    Prototype* p = new concreatePrototype();
    Prototype* p_clone = p->clone();
    return 0;
}