量化交易之设计模式篇 - 原型模式

//
// Created by win10 on 2021/11/16.
//

#include <thread>
#include <iostream>
using namespace std;

// 原型模式
class Prototype {
public:
    Prototype(): m_string("") {}
    Prototype(string str): m_string(str) {}
    virtual ~Prototype() = default;

    void show() {
        std::cout << "show: " << this->m_string << std::endl;
    }

    virtual Prototype* clone() = 0;

private:
    string m_string;
};

class ConcretePrototype1: public Prototype {
public:
    ConcretePrototype1() {};
    ConcretePrototype1(string str): Prototype(str) {};

    virtual Prototype* clone() {
        ConcretePrototype1* newObj = new ConcretePrototype1();
        *newObj = *this;
        return newObj;
    }
};
class ConcretePrototype2: public Prototype {
public:
    ConcretePrototype2() {};
    ConcretePrototype2(string str):Prototype(str) {};

    virtual Prototype* clone() {
        ConcretePrototype2* newObj = new ConcretePrototype2();
        *newObj = *this;
        return newObj;
    }
};

int main() {

    ConcretePrototype1* test = new ConcretePrototype1("tqz");
    ConcretePrototype2* test2 = dynamic_cast<ConcretePrototype2 *>(test->clone());

    test->show();
    test2->show();

    delete test;
    delete test2;

    return 0;
}