channel.hh

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2006
 *
 *  Last modified:
 *     $Date: 2008-07-11 09:28:48 +0200 (Fri, 11 Jul 2008) $ by $Author: tack $
 *     $Revision: 7285 $
 *
 *  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:
 *
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 *  included in all copies or substantial portions of the Software.
 *
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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#ifndef __GECODE_INT_CHANNEL_HH__
#define __GECODE_INT_CHANNEL_HH__

#include "gecode/int.hh"
#include "gecode/int/distinct.hh"

namespace Gecode { namespace Int { namespace Channel {

  typedef Support::SentinelStack<int> ProcessStack;

  template <class Info, PropCond pc>
  class Base : public Propagator {
  protected:
    int n;
    int n_na;
    Info* xy;
    Base(Space* home, bool share, Base<Info,pc>& p);
    Base(Space* home, int n, Info* xy);
    // Specification for this propagator
    Reflection::ActorSpec spec(const Space* home, Reflection::VarMap& m,
                                const Support::Symbol& name) const;
  public:
    virtual PropCost cost(ModEventDelta med) const;
    virtual size_t dispose(Space* home);
  };


  template <class View> class ValInfo;

  template <class View, bool shared>
  class Val : public Base<ValInfo<View>,PC_INT_VAL> {
 protected:
    using Base<ValInfo<View>,PC_INT_VAL>::n;
    using Base<ValInfo<View>,PC_INT_VAL>::n_na;
    using Base<ValInfo<View>,PC_INT_VAL>::xy;
    Val(Space* home, bool share, Val& p);
    Val(Space* home, int n, ValInfo<View>* xy);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    static  ExecStatus post(Space* home, int n, ValInfo<View>* xy);
    virtual Reflection::ActorSpec spec(const Space* home,
                                        Reflection::VarMap& m) const;
    static void post(Space* home, Reflection::VarMap& vars,
                     const Reflection::ActorSpec& spec);
    static Support::Symbol ati(void);
  };

  template <class View> class DomInfo;

  template <class View, bool shared>
  class Dom : public Base<DomInfo<View>,PC_INT_DOM> {
  protected:
    using Base<DomInfo<View>,PC_INT_DOM>::n;
    using Base<DomInfo<View>,PC_INT_DOM>::n_na;
    using Base<DomInfo<View>,PC_INT_DOM>::xy;
    Distinct::DomCtrl<View> dc;
    Dom(Space* home, bool share, Dom& p);
    Dom(Space* home, int n, DomInfo<View>* xy);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(ModEventDelta med) const;
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    static  ExecStatus post(Space* home, int n, DomInfo<View>* xy);
    virtual Reflection::ActorSpec spec(const Space* home,
                                        Reflection::VarMap& m) const;
    static void post(Space* home, Reflection::VarMap& vars,
                     const Reflection::ActorSpec& spec);
    static Support::Symbol ati(void);
  };

  class LinkSingle :
    public MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL> {
  private:
    using MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>::x0;
    using MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>::x1;

    LinkSingle(Space* home, bool share, LinkSingle& p);
    LinkSingle(Space* home, BoolView x0, IntView x1);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(ModEventDelta med) const;
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    static  ExecStatus post(Space* home, BoolView x0, IntView x1);
    virtual Reflection::ActorSpec spec(const Space* home,
                                        Reflection::VarMap& m) const;
    GECODE_INT_EXPORT
    static void post(Space* home, Reflection::VarMap& vars,
                     const Reflection::ActorSpec& spec);
    GECODE_INT_EXPORT
    static Support::Symbol ati(void);
  };

  class LinkMulti :
    public MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM> {
  private:
    using MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM>::x;
    using MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM>::y;
    int o;
    LinkMulti(Space* home, bool share, LinkMulti& p);
    LinkMulti(Space* home, ViewArray<BoolView>& x, IntView y, int o0);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(ModEventDelta med) const;
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    GECODE_INT_EXPORT
    static  ExecStatus post(Space* home, 
                            ViewArray<BoolView>& x, IntView y, int o);
    virtual Reflection::ActorSpec spec(const Space* home,
                                        Reflection::VarMap& m) const;
    static void post(Space* home, Reflection::VarMap& vars,
                     const Reflection::ActorSpec& spec);
    GECODE_INT_EXPORT
    static Support::Symbol ati(void);
  };

}}}

#include "gecode/int/channel/base.icc"
#include "gecode/int/channel/val.icc"
#include "gecode/int/channel/dom.icc"

#include "gecode/int/channel/link-single.icc"
#include "gecode/int/channel/link-multi.icc"

#endif

// STATISTICS: int-prop