基于c++的builder模式初探。

builder模式：核心是同样的建造过程可以得到不同的外在表象。

#ifndef IBUILDER_H
#define IBUILDER_H

class IBuilder{
protected:
virtual void buildHead()=0;
virtual void buildBody()=0;
virtual void buildFoot()=0;



friend class Context;

public:
virtual ~IBuilder(){}

};

#endif

#ifndef WOMAN_BUILDER_H
#define WOMAN_BUILDER_H

#include "IBuilder.h"
#include <iostream>
class WomanBuilder : public IBuilder{
protected:
virtual void buildHead();
virtual void buildBody();
virtual void buildFoot();
public:
virtual ~WomanBuilder(){}

};

#endif

#include "WomanBuilder.h"
using namespace std;
void WomanBuilder::buildHead(){
cout<<"build woman head."<<endl;
}

void WomanBuilder::buildBody(){
cout<<"build woman body."<<endl;
}

void WomanBuilder::buildFoot(){
cout<<"build woman foot."<<endl;
}

#ifndef MAN_BUILDER_H
#define MAN_BUILDER_H


#include "IBuilder.h"
#include <iostream>
class ManBuilder : public IBuilder{
protected:
virtual void buildHead();
virtual void buildBody();
virtual void buildFoot();
public:
virtual ~ManBuilder(){}

};

#endif

#include "ManBuilder.h"
using namespace std;
void ManBuilder::buildHead(){
cout<<"build man... head."<<endl;
}

void ManBuilder::buildBody(){
cout<<"build man... body."<<endl;
}

void ManBuilder::buildFoot(){
cout<<"build man... foot."<<endl;
}

#ifndef CONTEXT_H
#define CONTEXT_H

#include "IBuilder.h"
class Context{
public:
static void build(IBuilder*);



};

#endif

#include "Context.h"
void Context::build(IBuilder* builder){
builder->buildHead();
builder->buildBody();
builder->buildFoot();

}

#include "Context.h"
#include "WomanBuilder.h"
#include "ManBuilder.h"
int main(){
IBuilder* bulderwm=new WomanBuilder;
IBuilder* builderman=new ManBuilder;
Context::build(bulderwm);
Context::build(builderman);

delete bulderwm;
delete builderman;
return 0;
}