/*
 * JAVA "finally"-style exception-safe gargabe collection
 * for C++11
 *
 * cxx -std=c++11 lambda_finally_test1.cpp
 * Written by Roland Mainz <roland.mainz@nrubsig.org>
 */

#include <functional>

#include <stdlib.h>
#include <stdio.h>


class finally
{
	std::function<void(void)> f;

public:
	finally(const std::function<void(void)> &f) : f(f)
	{
	}

	~finally()
	{
		f();
	}
};


int foo(int ac)
{
	int arg = ac;
	
	finally xdone([&]{ printf("#done\n"); });

	puts("#start.");

	{
		finally x1([&]{ puts("four"); });
		
		puts("#one.");

		{
			finally x2([&]{ printf("three %d\n", arg); });
			puts("#two.");
			
			arg = 7;
			throw "blabla_exception";
		}
	}

	puts("#err_not_reachable.");
	return EXIT_FAILURE;
}


int main(int ac, char *av[])
{
	int retcode = EXIT_SUCCESS;

	try
	{
		retcode = foo(ac);
	}
	catch(...)
	{
	}
	
	return retcode;
}