channel.hh

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Denys Duchier <denys.duchier@univ-orleans.fr>
 *     Guido Tack <tack@gecode.org>
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Denys Duchier, 2011
 *     Guido Tack, 2011
 *     Christian Schulte, 2004
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  Permission is hereby granted, free of charge, to any person obtaining
 *  a copy of this software and associated documentation files (the
 *  "Software"), to deal in the Software without restriction, including
 *  without limitation the rights to use, copy, modify, merge, publish,
 *  distribute, sublicense, and/or sell copies of the Software, and to
 *  permit persons to whom the Software is furnished to do so, subject to
 *  the following conditions:
 *
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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 *
 */

#ifndef __GECODE_SET_CHANNEL_HH__
#define __GECODE_SET_CHANNEL_HH__

#include <gecode/set.hh>

namespace Gecode { namespace Set { namespace Channel {

  template<class View>
  class ChannelSorted : public Propagator {
  protected:
    View x0;
    ViewArray<Gecode::Int::IntView> xs;

    ChannelSorted(Space& home, ChannelSorted& p);
    ChannelSorted(Home home, View, ViewArray<Gecode::Int::IntView>&);
  public:
    virtual Actor* copy(Space& home);
    virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
    virtual void reschedule(Space& home);
    virtual size_t dispose(Space& home);
    virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
    static ExecStatus post(Home home, View s,
                           ViewArray<Gecode::Int::IntView>& x);
  };

  template<class View>
  class ChannelInt : public Propagator {
  protected:
    ViewArray<Gecode::Int::CachedView<Gecode::Int::IntView> > xs;
    ViewArray<CachedView<View> > ys;

    ChannelInt(Space& home, ChannelInt& p);
    ChannelInt(Home home,
               ViewArray<Gecode::Int::CachedView<Gecode::Int::IntView> >&,
               ViewArray<CachedView<View> >&);
  public:
    virtual Actor* copy(Space& home);
    virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
    virtual void reschedule(Space& home);
    virtual size_t dispose(Space& home);
    virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
    static ExecStatus post(Home home,
                           ViewArray<Gecode::Int::CachedView<
                            Gecode::Int::IntView> >& x,
                           ViewArray<CachedView<View> >& y);
  };

  template<class View>
  class ChannelBool
    : public MixNaryOnePropagator<Gecode::Int::BoolView,
                                  Gecode::Int::PC_BOOL_VAL,
                                  View,PC_GEN_NONE> {
  protected:
    typedef MixNaryOnePropagator<Gecode::Int::BoolView,
                                 Gecode::Int::PC_BOOL_VAL,
                                 View,PC_GEN_NONE> Super;
    using Super::x;
    using Super::y;

    ChannelBool(Space& home, ChannelBool& p);
    ChannelBool(Home home,ViewArray<Gecode::Int::BoolView>&,
                View);

    class IndexAdvisor : public Advisor {
    protected:
      int idx;
    public:
      template<class A>
      IndexAdvisor(Space& home, ChannelBool<View>& p, Council<A>& c,
                   int index);
      IndexAdvisor(Space& home, IndexAdvisor& a);
      int index(void) const;
      template<class A>
      void dispose(Space& home, Council<A>& c);
    };

    Council<IndexAdvisor> co;
    SetDelta delta;
    GLBndSet zeros;
    GLBndSet ones;
    bool running;
  public:
    virtual Actor* copy(Space& home);
    virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
    virtual void reschedule(Space& home);
    virtual size_t dispose(Space& home);
    virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
    virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d);
    static ExecStatus post(Home home,ViewArray<Gecode::Int::BoolView>& x,
                           View y);
  };

  template<typename View>
  class ChannelSet: public Propagator {
  protected:
    ViewArray<CachedView<View> > xs;
    ViewArray<CachedView<View> > ys;

    ChannelSet(Space& home, ChannelSet& p);
    ChannelSet(Home home,
               ViewArray<CachedView<View> >&,
               ViewArray<CachedView<View> >&);
  public:
    virtual Actor* copy(Space& home);
    virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
    virtual void reschedule(Space& home);
    virtual size_t dispose(Space& home);
    virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
    static ExecStatus post(Home home,
                           ViewArray<CachedView<View> >& x,
                           ViewArray<CachedView<View> >& y);
  };

}}}

#include <gecode/set/channel/sorted.hpp>
#include <gecode/set/channel/int.hpp>
#include <gecode/set/channel/bool.hpp>
#include <gecode/set/channel/set.hpp>

#endif

// STATISTICS: set-prop