适配器Adapter[通俗易懂]

//目标接口(新接口)
class ITarget{ 
   
public:
    virtual void process() = 0;
}

//遗留接口
class IAdaptee{ 
   
public:
    virtual void foo(int data) = 0;
    virtual int bar() = 0;
}
//遗留类
class OldClass : IAdaptee{ 
   
public:
public:
    void foo(int data){ 
   
        //..
    };
    int bar(){ 
   
        //..
    };
}
//对象适配器
class Adapter : public ITarget{ 
    //对象
protected:
    IAdaptee* pAdaptee; //组合
public:

    Adapter(IAdaptee *PAdaptee){ 
   
        this->pAdaptee = pAdaptee;
    }
    virtual void process(){ 
   
        int data = pAdaptee->bar();
        pAdatee->foo(data);
    }
}

//类适配器
class Adapter : public ITarget,protected OldClass//多继承,这样不好 因为类被写死了
{ 
   
}

int main(){ 
   
    IAdaptee* pAdaptee = new OldClass();

    ITarget *pTarget = new Adapter(pAdaptee);
    pTarget->process();
}