Реализации на С++

Chain of Responsibility

Общая реализация на языке С++

AbstractHandler

class AbstractHandler
{
	using PtrAbstractHandler = shared_ptr<AbstractHandler>;
protected:
	PtrAbstractHandler next;

	virtual bool run() = 0;

public:
	using Default = shared_ptr<AbstractHandler>;

	virtual ~AbstractHandler() = default;

	virtual bool handle() = 0;

	void add(PtrAbstractHandler node);
	void add(PtrAbstractHandler node1, PtrAbstractHandler node2, ...);
	void add(initializer_list<PtrAbstractHandler> list);
};

ConcreteHandler

Methods

# include <iostream>
# include <initializer_list>
# include <memory>

using namespace std;

int main()
{
	shared_ptr<AbstractHandler> chain = make_shared<ConcreteHandler>();

	chain->add(
		{
		make_shared<ConcreteHandler>(false),
		make_shared<ConcreteHandler>(true),
		make_shared<ConcreteHandler>(true),
		AbstractHandler::Default()
		}
	);

	cout << "Result = " << chain->handle() << ";" << endl;
}