适配器模式（Adapter）

 

#include <iostream>
using namespace std;
class ThreePhaseOutlet {
public:
    void doThreePhasePlug() {
        cout << "三相插头接入" << endl;
    }
};

class TwoPhaseOutlet {
public:
    virtual void doPlug() = 0;
};

class OutletConverter :public TwoPhaseOutlet, public ThreePhaseOutlet {
public:
    void doPlug() {
        doConvertor();
        doThreePhasePlug();
    }
    void doConvertor() {
        cout << "我们正在将三相插头转为两相插头" << endl;
    }
};

//对象适配，它可以更加灵活一些
class OutletObjConvertor :public TwoPhaseOutlet {
public:
    OutletObjConvertor(ThreePhaseOutlet* pOut) :m_pOut(pOut) {

    }
    void doPlug() {
        doConvert();
        m_pOut->doThreePhasePlug();
    }
    void doConvert() {
        cout << "我们正在对一个二相插头本身进行转化" << endl;
    }
private:
    ThreePhaseOutlet* m_pOut;
};

int main(void) {
    /*TwoPhaseOutlet* pOutlet = new OutletConverter();
    pOutlet->doPlug();*/
    TwoPhaseOutlet* pOutlet = new OutletObjConvertor(new ThreePhaseOutlet);
    pOutlet->doPlug();
    system("pause");
    return 0;
}