设计模式之桥接模式（C++源码） --共同学习

[hisense2423]

/***************************************************

桥接模式（bridge）：将抽象部分与它的实现部分分离，使
它们都可以独立地变化。

***************************************************/

#include <iostream>

using namespace std;

class Implementor
{
public:
virtual void operation() = 0;
};

class ConcreteImplementorA:public Implementor
{
public:
void operation()
{
cout<<"This is ImplementA"<<endl;
}
};

class ConcreteImplementorB:public Implementor
{
public:
void operation()
{
cout<<"This is ImplementB"<<endl;
}
};

class ConcreteImplementorC:public Implementor
{
public:
void operation()
{
cout<<"This is ImplementC"<<endl;
}
};

class Abstraction
{
protected:
Implementor *pImp;

public:
void SetImplementor(Implementor *p)
{
pImp = p;
}

virtual void operation()
{
if(pImp)
pImp->operation();
}
};

class RefinedAbstraction:public Abstraction
{
public:
void operation()
{
if(pImp)
pImp->operation();
}
};

int main()
{
RefinedAbstraction* pR = new RefinedAbstraction();
Implementor *pI;

pI = new ConcreteImplementorA();
pR->SetImplementor(pI);
pR->operation();
delete pI;

pI = new ConcreteImplementorB();
pR->SetImplementor(pI);
pR->operation();
delete pI;

pI = new ConcreteImplementorC();
pR->SetImplementor(pI);
pR->operation();
delete pI;

delete pR;

return 1;
}

使用MinGW编译通过，输出结果：

This is ImplementA
This is ImplementB
This is ImplementC


Terminated with return code 1
Press any key to continue ...

[michney]

up

[iambic]

你为什么要return 1？

[ryfdizuo]

pimple模式：
//#include "pimpl_sample.h"
struct impl;
class pimpl_sample
{
public:
	pimpl_sample();
	~pimpl_sample();
	void do_something();
private:
	impl* pimpl_;
};

//.cpp
#include "pimpl_sample.h"
#include <string>
#include <iostream>
using namespace std;

struct impl
{
	void do_something_()
	{
		std::cout<<s_<<endl;
	}
	std::string s_;
};

pimpl_sample::pimpl_sample()
: pimpl_(new impl)
{
	pimpl_->s_ = "THIS is the impl idiom";
}

pimpl_sample::~pimpl_sample()
{
	delete pimpl_;
}

void pimpl_sample::do_something()
{
	pimpl_->do_something_();
}

int main()
{
	pimpl_sample* Test=new pimpl_sample;
	Test->do_something();
	delete Test;

	return 0;
}
感觉和lz说的差不多一个意思；

[ryfdizuo]

@_@

[baihacker]

mark,学习啦

[lychopper]

写一个java方向的那