turkeyadapter.hpp

来自「深入浅出设计模式（书配套c++源代码)。包含20个设计模式的c++实现。」· HPP 代码 · 共 37 行

#ifndef	_HFDP_CPP_FLYWEIGHT_FOWLWEIGHT_TURKEY_ADAPTER_HPP_
#define _HFDP_CPP_FLYWEIGHT_FOWLWEIGHT_TURKEY_ADAPTER_HPP_

#include "FowlWeight.hpp"

namespace HeadFirstDesignPatterns {
namespace FlyWeight {
namespace FowlWeight {

// ConcreteFlyweight

class TurkeyAdapter : public Fowl {

	private: std::auto_ptr< const Turkey > _turkey;

	private: TurkeyAdapter( const TurkeyAdapter& ); // Disable copy constructor
	private: void operator=( const TurkeyAdapter& ); // Disable assignment operator

	public: explicit TurkeyAdapter( const Turkey* turkey ) :
		_turkey( turkey ) { assert( turkey );
	}
	public: void quack() const { assert( _turkey.get() );
		_turkey->gobble();
	}
	public: void swim() const { assert( _turkey.get() );
		_turkey->walk();
	}
	public: std::string toString() const { assert( _turkey.get() );
		return _turkey->toString();
	}
};

} // namespace FowlWeight
} // namespace FlyWeight
} // namespace HeadFirstDesignPatterns

#endif