include/wipal/tool/window.hh

/*
 * WiPal - A library and a set of tools to manipulate wireless traces.
 * Copyright (C) 2007, 2008, 2009  Universite Pierre et Marie Curie - Paris 6
 *
 * 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., 51 Franklin Street, Fifth Floor, Boston,
 * MA  02110-1301  USA
 *
 * Author: Thomas Claveirole <thomas.claveirole@lip6.fr>
 */
#ifndef TOOL_WINDOW_HH_
# define TOOL_WINDOW_HH_

# include <deque>

# include <wipal/tool/iterator.hh>
# include <wipal/tool/iterable.hh>

# include "window_fwd.hh"

namespace wpl
{

  namespace tool
  {

    template <class, unsigned, unsigned, class>
    struct window;

    template <class, unsigned, unsigned, class>
    struct window_maker;

    template <class I, unsigned Ws, unsigned S, class B>
    struct types< window<I, Ws, S, B> >
    {
      typedef std::deque<typename I::value_type>        value_type;
    };

    template <class I, unsigned Ws, unsigned S, class B>
    struct types< window_maker<I, Ws, S, B> >
    {
      typedef window<I, Ws, S, bottom>                  iterator;
    };

    template <class InputIterator,
              unsigned WSize,
              unsigned Step = 1,
              class Bottom = bottom>
    struct window:
      WP_INHERIT(public iterator, window<InputIterator, WSize, Step>)
    {

      typedef WP_GET_EXACT(Bottom, window<InputIterator, WSize, Step, Bottom>)
                                                                exact_type;
      typedef WP_TYPE(value_type, exact_type)                   value_type;

      enum
      {
        max_size        = WSize,        
        step            = Step          
      };

      template <class Iterable>
      window(Iterable&, bool);



      bool              equal(const window&) const;
      void              increment();
      const value_type& get() const;
      const value_type* get_ptr() const;

      const typename InputIterator::value_type&
      operator [] (unsigned i) const;

      bool              last() const;

    protected:
      bool              at_end_;
      InputIterator     next_;  
      InputIterator     last_;  
      value_type        v_;     
    };

    template <class InputIterator,
              unsigned WSize,
              unsigned Step = 1,
              class Bottom = bottom>
    struct window_maker:
      WP_INHERIT(public iterable,
                 window_maker<InputIterator, WSize, Step, Bottom>)
    {
      window_maker(const InputIterator& first, const InputIterator& last);

    private:
      InputIterator     first_;
      InputIterator     last_;

      friend class window<InputIterator, WSize, Step>;
    };

  } // End of namespace wpl::tool.

} // End of namespace wpl.

# include "window.hxx"

#endif // ! TOOL_WINDOW_HH_

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