Dough.h
1 #ifndef _DOUGH_H 2 #define _DOUGH_H 3 4 class Dough 5 { 6 }; 7 #endif
ThinCrustDough.h
1 #ifndef _THIN_CRUST_DOUGH_H 2 #define _THIN_CRUST_DOUGH_H 3 4 #include "Dough.h" 5 6 class ThinCrustDough : public Dough 7 { 8 }; 9 #endif
Sauce.h
1 #ifndef _SAUCE_H 2 #define _SAUCE_H 3 4 class Sauce 5 { 6 }; 7 #endif
MarinaraSauce.h
1 #ifndef _MARINARA_SAUCE_H 2 #define _MARINARA_SAUCE_H 3 4 #include "Sauce.h" 5 6 class MarinaraSauce : public Sauce 7 { 8 }; 9 #endif
Pizza.h
1 #ifndef _PIZZA_H 2 #define _PIZZA_H 3 #include <iostream> 4 #include <string> 5 #include "Dough.h" 6 #include "Sauce.h" 7 class Pizza 8 { 9 public: 10 Pizza() : m_name(), m_p_dough(NULL), m_p_sauce(NULL) {} 11 virtual ~Pizza() {} 12 virtual void prepare() = 0; 13 virtual void bake() { std::cout << "Bake for 25 mins at 350" << std::endl; } 14 virtual void cut() { std::cout << "Cutting the pizza into diagonal slices" << std::endl; } 15 virtual void box() { std::cout << "Place pizza in official PizzaStore box" << std::endl; } 16 void set_name(const std::string &name) { m_name = name; } 17 std::string get_name() { return m_name; } 18 Dough *m_p_dough; 19 Sauce *m_p_sauce; 20 private: 21 std::string m_name; 22 }; 23 #endif
CheesePizza.h
1 #ifndef _CHEESE_PIZZA_H 2 #define _CHEESE_PIZZA_H 3 4 #include "Pizza.h" 5 #include "PizzaIngredientFactory.h" 6 7 class CheesePizza : public Pizza 8 { 9 private: 10 PizzaIngredientFactory *m_p_ingredient_factory; 11 public: 12 CheesePizza(PizzaIngredientFactory *p) : m_p_ingredient_factory(p) {} 13 void prepare() 14 { 15 std::cout << "Preparing " << get_name() << std::endl; 16 m_p_sauce = m_p_ingredient_factory->create_sauce(); 17 } 18 }; 19 20 #endif
GreekPizza.h
1 #ifndef _GREEK_PIZZA_H 2 #define _GREEK_PIZZA_H 3 4 #include "Pizza.h" 5 #include "PizzaIngredientFactory.h" 6 7 class GreekPizza : public Pizza 8 { 9 private: 10 PizzaIngredientFactory *m_p_ingredient_factory; 11 public: 12 GreekPizza(PizzaIngredientFactory *p) : m_p_ingredient_factory(p) {} 13 void prepare() 14 { 15 std::cout << "Preparing " << get_name() << std::endl; 16 m_p_dough = m_p_ingredient_factory->create_dough(); 17 } 18 }; 19 20 #endif
PizzaStore.h
1 #ifndef _PIZZA_STORE_H 2 #define _PIZZA_STORE_H 3 4 #include "Pizza.h" 5 6 class PizzaStore 7 { 8 private: 9 virtual Pizza* CreatePizza(const std::string &type) = 0; 10 public: 11 Pizza* OrderPizza(const std::string &type) 12 { 13 Pizza *p_pizza = CreatePizza(type); 14 if (p_pizza) 15 { 16 p_pizza->prepare(); 17 p_pizza->bake(); 18 p_pizza->cut(); 19 p_pizza->box(); 20 } 21 return p_pizza; 22 } 23 }; 24 #endif
NYPizzaStore.h
1 #ifndef _NY_PIZZA_STORE_H 2 #define _NY_PIZZA_STORE_H 3 4 #include "PizzaStore.h" 5 #include "CheesePizza.h" 6 #include "GreekPizza.h" 7 #include "NYPizzaIngredientFactory.h" 8 class NYPizzaStore : public PizzaStore 9 { 10 private: 11 Pizza* CreatePizza(const std::string &type) 12 { 13 PizzaIngredientFactory *p_factory = new NYPizzaIngredientFactory(); 14 if ( "cheese" == type ) 15 { 16 Pizza *p_pizza = new CheesePizza( p_factory ); 17 p_pizza->set_name("New York Style Cheese Pizza"); 18 return p_pizza; 19 } 20 if ( "greek" == type ) 21 { 22 Pizza *p_pizza = new GreekPizza( p_factory ); 23 p_pizza->set_name("New York Style Greek Pizza"); 24 return p_pizza; 25 } 26 return NULL; 27 } 28 }; 29 #endif
PizzaIngredientFactory.h
1 #ifndef _PIZZA_INGREDIENT_FACTORY_H 2 #define _PIZZA_INGREDIENT_FACTORY_H 3 4 #include "Dough.h" 5 #include "Sauce.h" 6 7 class PizzaIngredientFactory 8 { 9 public: 10 virtual Dough* create_dough() = 0; 11 virtual Sauce* create_sauce() = 0; 12 }; 13 14 #endif
NYPizzaIngredientFactory.h
1 #ifndef _NY_PIZZA_INGREDIENT_FACTORY_H 2 #define _NY_PIZZA_INGREDIENT_FACTORY_H 3 4 #include "ThinCrustDough.h" 5 #include "MarinaraSauce.h" 6 7 class NYPizzaIngredientFactory : public PizzaIngredientFactory 8 { 9 public: 10 Dough* create_dough() { std::cout << "Creating Thin Crust Dough" << std::endl; return new ThinCrustDough(); } 11 Sauce* create_sauce() { std::cout << "Creating Marinara Sauce" << std::endl; return new MarinaraSauce(); } 12 }; 13 14 #endif
main.cpp
1 #include "NYPizzaStore.h" 2 int main() 3 { 4 NYPizzaStore pizza_store; 5 Pizza *p_pizza = pizza_store.OrderPizza("greek"); 6 if ( p_pizza ) 7 { 8 delete p_pizza; 9 } 10 return 0; 11 }
时间: 2024-11-05 19:35:58