设计模式必知必会系列终章 - ToB企服应用市场:ToB评测及商务社交产业平台

#include <iostream>
using namespace std;
//此处我没有再写componet类了, 想写的兄弟可以添加喔
class Context {
public:
int day;//天数
int add;//加成
};
//分发奖金: 普通员工仅仅只是day * 100
//经理还有加成
//老总等等加成更加牛逼，在经理的基础上再10倍加成
//基础员工工资
//DecoratorClass装饰器基类
class BaseWocker {
public:
BaseWocker(BaseWocker* _base) : base(_base) {
}
virtual int CalculateSlary(Context& ctx) {
//计算基本工资
return ctx.day * 100;
}
virtual ~BaseWocker() {}
protected:
BaseWocker* base;
};
//继承复用接口
//BaseWocker继承下来的是裸机, 最初框架，接口
//组合扩展细节. 运算.
class Manager : BaseWocker {
public:
Manager(BaseWocker* _base = nullptr) : BaseWocker(_base) {
}
virtual int CalculateSalary(Context& ctx) {
int basesalary = base->CalculateSlary(ctx);
//...在组合对象的基础上进行扩展运算
return basesalary + ctx.add;
}
};
//Decorator
class Boss : public BaseWocker {
public:
Boss(BaseWocker* _base) : BaseWocker(_base) {
}
virtual int CalculateSalary(Context& ctx) {
int basesalary = base->CalculateSlary(ctx);
//...在组合对象的基础上进行扩展运算
return (basesalary + (ctx.add * 10));
}
};

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//业务操作, Component抽象基类
class Stream{
public：
virtual char Read(int number)=0;
virtual void Seek(int position)=0;
virtual void Write(char data)=0;
virtual ~Stream(){}
};
//主体类具体的Component类
class FileStream: public Stream{
public:
virtual char Read(int number){
//读文件流
}
virtual void Seek(int position){
//定位文件流
}
virtual void Write(char data){
//写文件流
}
};
class NetworkStream :public Stream{
public:
virtual char Read(int number){
//读网络流
}
virtual void Seek(int position){
//定位网络流
}
virtual void Write(char data){
//写网络流
}
};
class MemoryStream :public Stream{
public:
virtual char Read(int number){
//读内存流
}
virtual void Seek(int position){
//定位内存流
}
virtual void Write(char data){
//写内存流
}
};
//扩展操作
//扩展操作采取的是装饰器类, has a 的特征
DecoratorStream: public Stream{
protected:
Stream* stream;//...
DecoratorStream(Stream * stm):stream(stm){
}
};
//具体的decorator类
class CryptoStream: public DecoratorStream {
public:
CryptoStream(Stream* stm):DecoratorStream(stm){
}
virtual char Read(int number){
//额外的加密操作...
stream->Read(number);//读文件流
}
virtual void Seek(int position){
//额外的加密操作...
stream::Seek(position);//定位文件流
//额外的加密操作...
}
virtual void Write(byte data){
//额外的加密操作...
stream::Write(data);//写文件流
//额外的加密操作...
}
};
class BufferedStream : public DecoratorStream{
Stream* stream;//...
public:
BufferedStream(Stream* stm):DecoratorStream(stm){
}
//...
};

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