CppTest/Patterns/Behavioral/chain_of_responsibility.cpp at master · skynowa/CppTest · GitHub

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/**
 * \file
 * \brief
 *
 * \todo
 */

/*
Performs staged processing using a series of different objects.
*/


#include <string>
#include <iostream>

//-------------------------------------------------------------------------------------------------
class Output
{
public:
	void output(const std::string &str)
	{
		std::cout << str << std::endl;
	}
};
//-------------------------------------------------------------------------------------------------
class World
{
public:
	World(Output & out) : out(out) { }

	void output(const std::string &str)
	{
		out.output(str + " world!");
	}

private:
	Output &out;
};
//-------------------------------------------------------------------------------------------------
class Hello
{
public:
	Hello(World & world) : world(world) { }

	void output()
	{
		world.output("Hello");
	}

private:
	World &world;
};
//-------------------------------------------------------------------------------------------------
int main()
{
	Output output;
	World  world(output);

	Hello hello(world);
	hello.output();

	return 0;
}
//-------------------------------------------------------------------------------------------------