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‎Adapter/ducks/class_adapter/Duck.hpp

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#ifndef DUCK_H
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#define DUCK_H
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class Duck {
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public:
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virtual ~Duck () = default;
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virtual void quack() = 0;
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virtual void fly() = 0;
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};
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#endif /* DUCK_H */

‎Adapter/ducks/class_adapter/Makefile

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CXX = clang++
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CFLAGS = -g -Wall -Wextra -Werror -Weffc++ -pedantic-errors -std=c++17
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DEPS = Duck.hpp MallardDuck.hpp TurkeyAdapter.hpp Turkey.hpp WildTurkey.hpp
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TARGET = classAdapterTestDrive
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OBJ = $(TARGET).o
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%.o: %.cpp $(DEPS)
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$(CXX) -c -o $@ $< $(CFLAGS)
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$(TARGET): $(OBJ)
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$(CXX) -o $@ $^ $(CFLAGS)
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clean:
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rm -f *.o $(TARGET)

‎Adapter/ducks/class_adapter/MallardDuck.hpp

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#ifndef MALLARD_DUCK_H
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#define MALLARD_DUCK_H
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#include "Duck.hpp"
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#include <iostream>
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class MallardDuck : public Duck {
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public:
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void quack() override { std::cout << "Quack\n"; }
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void fly() override { std::cout << "I'm flying\n"; }
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};
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#endif /* MALLARD_DUCK_H */

‎Adapter/ducks/class_adapter/MallardDuckAdapter.hpp

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#ifndef MALLARD_DUCK_ADAPTER_H
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#define MALLARD_DUCK_ADAPTER_H
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#include "Turkey.hpp"
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#include "MallardDuck.hpp"
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#include "SimpleRandom.hpp"
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class MallardDuckAdapter : public Turkey, private MallardDuck {
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public:
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MallardDuckAdapter() = default;
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void gobble() override { MallardDuck::quack(); }
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void fly() override;
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private:
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SimpleRandom rand;
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};
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inline
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void
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MallardDuckAdapter::fly()
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{
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if (rand.nextInt(5) == 0)
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MallardDuck::fly();
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}
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#endif /* MALLARD_DUCK_ADAPTER_H */

‎Adapter/ducks/class_adapter/SimpleRandom.hpp

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#ifndef SIMPLE_RANDOM_H
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#define SIMPLE_RANDOM_H
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#include <memory>
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#include <random>
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#include <ctime>
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class SimpleRandom {
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public:
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using rand_type = std::default_random_engine::result_type;
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SimpleRandom() = default;
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rand_type nextInt(const unsigned i);
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private:
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std::default_random_engine e = std::default_random_engine(std::time(nullptr));
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std::uniform_int_distribution<unsigned> u;
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};
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SimpleRandom::rand_type
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SimpleRandom::nextInt(const unsigned i)
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{
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u = std::uniform_int_distribution<unsigned>(0,i);
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e.discard(1);
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return u(e);
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}
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#endif /* SIMPLE_RANDOM_H */

‎Adapter/ducks/class_adapter/Turkey.hpp

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#ifndef TURKEY_H
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#define TURKEY_H
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class Turkey {
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public:
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virtual ~Turkey () = default;
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virtual void gobble() = 0;
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virtual void fly() = 0;
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};
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#endif /* TURKEY_H */

‎Adapter/ducks/class_adapter/WildTurkey.hpp

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#ifndef WILD_TURKEY_H
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#define WILD_TURKEY_H
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#include "Turkey.hpp"
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#include <iostream>
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class WildTurkey : public Turkey {
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public:
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void gobble() override { std::cout << "Gobble, gooble\n"; }
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void fly() override { std::cout << "I'm flying a short distance\n"; }
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};
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#endif /* WILD_TURKEY_H */

‎Adapter/ducks/class_adapter/WildTurkeyAdapter.hpp

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#ifndef WILD_TURKEY_ADAPTER_H
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#define WILD_TURKEY_ADAPTER_H
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#include "Duck.hpp"
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#include "Turkey.hpp"
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#include "WildTurkey.hpp"
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#include <iostream>
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/*
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* Multiple Inheritance:
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* Inherit publicly from target (Duck) and privately from adaptee (WildTurky) thus the adapter would be a subclass of target but not the adaptee (Design Pattern, 144). The former is an interface (abstract) while the later is an implimentation (concrete).
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*/
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class WildTurkeyAdapter : public Duck, private WildTurkey {
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public:
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WildTurkeyAdapter() = default;
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void quack() override { WildTurkey::gobble(); }
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void fly() override;
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};
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inline
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void
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WildTurkeyAdapter::fly()
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{
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for (int i = 0; i < 5; ++i)
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WildTurkey::fly();
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}
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#endif /* WILD_TURKEY_ADAPTER_H */

‎Adapter/ducks/class_adapter/classAdapterTestDrive.cpp

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#include "Duck.hpp"
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#include "Turkey.hpp"
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#include "WildTurkey.hpp"
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#include "WildTurkeyAdapter.hpp"
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#include "MallardDuck.hpp"
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#include "MallardDuckAdapter.hpp"
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#include "WildTurkey.hpp"
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#include <iostream>
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void testDuck(Duck *duck) {
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duck->quack();
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duck->fly();
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}
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void testTurkey(Turkey *turkey) {
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turkey->gobble();
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turkey->fly();
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}
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int main()
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{
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auto turkey = WildTurkey();
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std::cout << "The Turkey says...\n";
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turkey.gobble();
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turkey.fly();
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auto wildTurkeyAdapter = WildTurkeyAdapter(); // instantiate adapter
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std::cout << "\nThe TurkeyAdaptor says...\n";
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testDuck(&wildTurkeyAdapter); // pass it as Duck
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auto mallardDuckAdapter = MallardDuckAdapter(); // instantiate
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std::cout << "\nThe DuckAdaptor says...\n";
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for (int i = 0; i < 10; ++i)
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testTurkey(&mallardDuckAdapter); // pass it as Turkey
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return 0;
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}

‎Adapter/ducks/object_adapter/Duck.hpp

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#ifndef DUCK_H
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#define DUCK_H
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class Duck {
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public:
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virtual ~Duck () = default;
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virtual void quack() = 0;
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virtual void fly() = 0;
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};
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#endif /* DUCK_H */

‎Adapter/ducks/object_adapter/DuckAdapter.hpp

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#ifndef DUCK_ADAPTER_H
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#define DUCK_ADAPTER_H
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#include "Duck.hpp"
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#include "Turkey.hpp"
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#include "SimpleRandom.hpp" // mimics Java's Random
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#include <iostream>
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#include <random>
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#include <ctime>
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class DuckAdapter : public Turkey {
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public:
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DuckAdapter() = default;
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DuckAdapter(Duck *tur) : turkey(tur) { }
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void gobble() override { turkey->quack(); }
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void fly() override;
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private:
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Duck *turkey;
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SimpleRandom rand; // See header for implementation
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};
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inline
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void
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DuckAdapter::fly()
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{
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if (rand.nextInt(5) == 0)
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turkey->fly();
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}
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#endif /* DUCK_ADAPTER_H */

‎Adapter/ducks/object_adapter/Makefile

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CXX = clang++
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CFLAGS = -g -Wall -Wextra -Werror -Weffc++ -pedantic-errors -std=c++17
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DEPS = DuckAdapter.hpp Duck.hpp MallardDuck.hpp SimpleRandom.hpp \
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TurkeyAdapter.hpp Turkey.hpp WildTurkey.hpp challenge/Drone.hpp \
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challenge/DroneAdapter.hpp challenge/SuperDrone.hpp
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TARGET = duckTestDrive
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TARGET2 = turkeyTestDrive
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OBJ = $(TARGET).o
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OBJ2 = $(TARGET2).o
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%.o: %.cpp $(DEPS)
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$(CXX) -c -o $@ $< $(CFLAGS)
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$(TARGET): $(OBJ)
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$(CXX) -o $@ $^ $(CFLAGS)
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$(TARGET2): $(OBJ2)
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$(CXX) -o $@ $^ $(CFLAGS)
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clean:
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rm -f *.o $(TARGET) $(TARGET2)

‎Adapter/ducks/object_adapter/MallardDuck.hpp

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#ifndef MALLARD_DUCK_H
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#define MALLARD_DUCK_H
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#include "Duck.hpp"
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#include <iostream>
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class MallardDuck : public Duck {
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public:
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void quack() override { std::cout << "Quack\n"; }
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void fly() override { std::cout << "I'm flying\n"; }
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};
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#endif /* MALLARD_DUCK_H */

‎Adapter/ducks/object_adapter/SimpleRandom.hpp

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#ifndef SIMPLE_RANDOM_H
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#define SIMPLE_RANDOM_H
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#include <memory>
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#include <random>
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#include <ctime>
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class SimpleRandom {
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public:
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using rand_type = std::default_random_engine::result_type;
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SimpleRandom() = default;
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rand_type nextInt(const unsigned i);
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private:
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std::default_random_engine e = std::default_random_engine(std::time(nullptr));
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std::uniform_int_distribution<unsigned> u;
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};
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inline
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SimpleRandom::rand_type
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SimpleRandom::nextInt(const unsigned i)
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{
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u = std::uniform_int_distribution<unsigned>(0,i);
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e.discard(1);
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return u(e);
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}
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#endif /* SIMPLE_RANDOM_H */

‎Adapter/ducks/object_adapter/Turkey.hpp

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#ifndef TURKEY_H
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#define TURKEY_H
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class Turkey {
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public:
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virtual ~Turkey () = default;
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virtual void gobble() = 0;
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virtual void fly() = 0;
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};
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#endif /* TURKEY_H */

‎Adapter/ducks/object_adapter/TurkeyAdapter.hpp

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#ifndef TURKEY_ADAPTER_H
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#define TURKEY_ADAPTER_H
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#include "Duck.hpp"
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#include "Turkey.hpp"
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#include <iostream>
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class TurkeyAdapter : public Duck {
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public:
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TurkeyAdapter(Turkey *tur) : turkey(tur) { }
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void quack() override { turkey->gobble(); }
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void fly() override;
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private:
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Turkey *turkey;
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};
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inline
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void
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TurkeyAdapter::fly()
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{
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for (int i = 0; i < 5; ++i)
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turkey->fly();
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}
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#endif /* TURKEY_ADAPTER_H */

‎Adapter/ducks/object_adapter/WildTurkey.hpp

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#ifndef WILD_TURKEY_H
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#define WILD_TURKEY_H
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#include "Turkey.hpp"
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#include <iostream>
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class WildTurkey : public Turkey {
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public:
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void gobble() override { std::cout << "Gobble, gobble\n"; }
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void fly() override { std::cout << "I'm flying a short distance\n"; }
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};
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#endif /* WILD_TURKEY_H */

‎Adapter/ducks/object_adapter/challenge/Drone.hpp

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#ifndef DRONE_H
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#define DRONE_H
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class Drone {
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public:
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virtual ~Drone () = default;
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virtual void beep() = 0;
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virtual void spin_rotors() = 0;
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virtual void take_off() = 0;
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};
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#endif /* DRONE_H */

‎Adapter/ducks/object_adapter/challenge/DroneAdapter.hpp

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#ifndef DRONE_ADAPTER_H
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#define DRONE_ADAPTER_H
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#include "../Duck.hpp"
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#include "Drone.hpp"
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class DroneAdapter : public Duck {
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public:
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DroneAdapter(Drone *d) : drone(d) {}
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virtual ~DroneAdapter() = default;
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void fly() override { drone->spin_rotors(); drone->take_off(); }
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void quack() override { drone->beep(); }
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private:
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Drone *drone;
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};
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#endif /* DRONE_ADAPTER_H */

‎Adapter/ducks/object_adapter/challenge/SuperDrone.hpp

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#ifndef SUPER_DRONE_H
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#define SUPER_DRONE_H
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#include "Drone.hpp"
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#include <iostream>
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class SuperDrone : public Drone {
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public:
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void beep() override { std::cout << "Beep beep beep\n"; }
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void spin_rotors() override { std::cout << "Rotors are spinning\n"; }
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void take_off() override { std::cout << "Taking off\n"; }
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};
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#endif /* SUPER_DRONE_H */

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