cplusplus 适配器模式

#include <iostream>
using namespace std;

class Target{ //target接口
public:
    virtual void eat() = 0;
    virtual void sleep() = 0;
};


class Adaptee{
public:
    void eat(int n){
        cout<<"eat cost: "<<n<<" seconds"<<endl;
    }

    void sleep(int n){
        cout<<"sleep for "<<n<<" seconds"<<endl;
    }
};


class Adapter: public Target, public Adaptee{
public:
    void eat(){
        cout<<"adapter ";
        Adaptee::eat(10);
    }

    void sleep(){
        cout<<"adapter ";
        Adaptee::sleep(10);
    }

};

int main(){
    Target* pobj = (Target* ) new Adapter();
    pobj->eat();
    pobj->sleep();
    delete pobj;
    return 0;//
}

 

成员变量形式的适配器模式

#include <iostream>
using namespace std;

class Target{ //target接口
public:
    virtual void eat() = 0;
    virtual void sleep() = 0;
};


class Adaptee{
public:
    void eat(int n){
        cout<<"eat cost: "<<n<<" seconds"<<endl;
    }

    void sleep(int n){
        cout<<"sleep for "<<n<<" seconds"<<endl;
    }
};


class Adapter: public Target{
public:

    Adapter(shared_ptr<Adaptee>& pobj){
        this->pobj = pobj;
    }

    ~Adapter(){

    }

    void eat(){
        cout<<"adapter ";
        this->pobj->eat(10);
    }

    void sleep(){
        cout<<"adapter ";
        this->pobj->sleep(10);
    }
private:
    shared_ptr<Adaptee> pobj;
};

int main(){

    //shared_ptr<Adaptee> sp(new Adaptee());
    shared_ptr<Adaptee> sp;
    sp = make_shared<Adaptee>();
    Target* pobj = (Target* ) new Adapter(sp);
    pobj->eat();
    pobj->sleep();
    delete pobj;
    return 0;
}