C++反射的一种实现方式

Reflector.h:

#pragma once#include <list>class Reflector{public:virtual ~Reflector();virtual const char* getClassName() = 0;static std::list<Reflector*> m_lstRef;};

 

Reflector.cpp:

#include "Reflector.h"Reflector::~Reflector(){}std::list<Reflector*>Reflector:: m_lstRef;

 

A.h:

#pragma once#include "Reflector.h"class A : public Reflector{public:virtual ~A();//如果你觉得重复，可以把函数getClassName弄成宏virtual const char* getClassName();};

 

A.cpp:

#include "A.h"A::~A(){}const char* A::getClassName(){return "A";}

 

main.cpp:

#include "Reflector.h"#include "A.h"#include <iostream>#include <string>using namespace std;void init(){Reflector::m_lstRef.push_back(new A);}int main(){init();//从别处（比如配置文件）得知要创建的是对象Aconst std::string className = "A";for (std::list<Reflector*>::iterator it = Reflector::m_lstRef.begin();it != Reflector::m_lstRef.end(); ++it){if (className == (*it)->getClassName()){cout << "A" << endl;}}return 0;}