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// test_callback.cc
// robert - programme du robot 2005. {{{
//
// Copyright (C) 2004 Nicolas Schodet
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
// 
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
// Contact :
//        Web: http://perso.efrei.fr/~schodet/
//      Email: <contact@ni.fr.eu.org>
// }}}
#include "callback.hh"

#include <iostream>

void
f (void)
{
    std::cout << " f ()" << std::endl;
}

int
i (void)
{
    static int v = 42;
    std::cout << " i () = " << v << std::endl;
    return v++;
}

struct G
{
    void operator () (void)
      {
	std::cout << " g ()" << std::endl;
      }
};

int
main (void)
{
    G g;
    Callback<void> cf (f);
    Callback<void> cg (g);
    Callback<void> ch;
    Callback<int> ci (i);
    try
      {
	std::cout << "cf" << std::endl;
	cf ();
	std::cout << "cg" << std::endl;
	cg ();
	cf = cg;
	cg = f;
	std::cout << "cf" << std::endl;
	cf ();
	std::cout << "cg" << std::endl;
	cg ();
	std::cout << "cf " << (cf ? "not " : "") << "empty" << std::endl;
	std::cout << "ch " << (ch ? "not " : "") << "empty" << std::endl;
	std::cout << "ci" << std::endl;
	int r = ci ();
	std::cout << "ci = " << r << std::endl;
	std::cout << "ch" << std::endl;
	ch ();
      }
    catch (const std::exception &e)
      {
	std::cout << e.what () << std::endl;
	return 1;
      }
    return 0;
}