设计模式之原型模式

//Prototype.h

#include <string>
using namespace std;

class Prototype
{
public:
    virtual Prototype *clone()=0;
    virtual void show()=0;
};

class concretePrototype1:public Prototype
{
private:
    string m_str;
public:
    concretePrototype1();
    concretePrototype1(string cstr);
    concretePrototype1(const concretePrototype1 &c);
    virtual Prototype *clone();
    virtual void show();

};

class concretePrototype2:public Prototype
{
private:
    string m_str;
public:
    concretePrototype2(string cstr);
    concretePrototype2(const concretePrototype2 &c);
    virtual Prototype *clone();
    virtual void show();
};

//Prototype.cpp

#include "Prototype.h"
#include <iostream>
/*
using namespace std;
concretePrototype1::concretePrototype1()
{
    cout<<"default the concretePrototype1"<<endl;
    this->m_str="default type1";
}

concretePrototype1::concretePrototype1(string cstr)
{
    cout<<"construct the concretePrototype1"<<endl;
    this->m_str=cstr;
}
concretePrototype1::concretePrototype1(const concretePrototype1 &c)
{
    cout<<"copy the concretePrototype1"<<endl;
    this->m_str=c.m_str;

}
Prototype *concretePrototype1::clone()
{
    cout<<"clone the concretePrototype1"<<endl;
    return new concretePrototype1(*this);
}

void concretePrototype1::show()
{
    cout<<"show the concretePrototype1"<<endl;
    cout<<this->m_str<<endl;
}

concretePrototype2::concretePrototype2(string cstr)
{
    this->m_str=cstr;
}
concretePrototype2::concretePrototype2(const concretePrototype2 &c)
{
    cout<<"copy the concretePrototype2"<<endl;
    this->m_str=c.m_str;
}
Prototype *concretePrototype2::clone()
{
    return new concretePrototype2(*this);
}

void concretePrototype2::show()
{
    cout<<this->m_str<<endl;
}
//main.cpp

#include “Prototype.h”

void main()
{
    concretePrototype1 cp1;
    concretePrototype1 cp2=cp1;                  //原来的调用复制构造函数

    cp1.show();                         
    cp2.show();
    
    Prototype *cp3=new concretePrototype1("concretePrototype1");  //指针的类型是父类
    cp3->show();

    Prototype *cp4=cp3->clone();
    cp4->show();
    delete cp3;
    cp3=NULL;
    cp4->show();

       return ;
}