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#ifndef bind_hh
#define bind_hh
// bind.hh
// 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>
// }}}

/// Class used to bind a function taking an argument to a functor taking no
/// argument.  This is not supposed to be used directly, but using the bind
/// template function.
template<typename R, typename F, typename A>
class ArgBinder
{
    /// Original function.
    F func_;
    /// Stored argument reference.
    const A &arg_;
  public:
    /// Return value.
    typedef R result_type;
  public:
    ArgBinder (F func, const A &arg)
	: func_ (func), arg_ (arg)
      { }
    result_type operator () (void)
      {
	return func_ (arg_);
      }
};

/// Bind a function taking an argument to a functor taking no argument.
/// Return value must be specified, other template arguments can be implied.
template<typename R, typename F, typename A>
ArgBinder<R, F, A>
bind (F func, const A &arg)
{
    return ArgBinder<R, F, A> (func, arg);
}

/// Class used to bind a member function to a functor taking no argument.
/// This is not supposed to be used directly, but using the bind template
/// function.
template<typename R, typename C>
class ObjBinder
{
    /// Original member function.
    R (C::*func_) (void);
    /// Object pointer stored.
    C *obj_;
  public:
    /// Return value.
    typedef R result_type;
  public:
    ObjBinder (R (C::*func) (void), C *obj)
	: func_ (func), obj_ (obj)
      { }
    result_type operator () (void)
      {
	(obj_->*func_) ();
      }
};

/// Bind a member function to a functor taking no argument.  All template
/// parameters must be specified.
template<typename R, typename C>
ObjBinder<R, C>
bind (R (C::*func) (void), C *obj)
{
    return ObjBinder<R, C> (func, obj);
}

#endif // bind_hh