element.hh

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2004
 *     Guido Tack, 2004
 *
 *  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:
 *
 *  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
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 */

#ifndef __GECODE_INT_ELEMENT_HH__
#define __GECODE_INT_ELEMENT_HH__

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

namespace Gecode { namespace Int { namespace Element {

  /*
   * Element constraint for array of integers
   *
   */

  typedef SharedArray<int> IntSharedArray;

  class IdxValMap;

  template <class ViewA, class ViewB>
  class Int : public Propagator {
  protected:
    ViewA          x0;
    ViewB          x1;
    IntSharedArray c;
    IdxValMap*     ivm;
    Int(Space* home, bool shared, Int& p);
    Int(Space* home, IntSharedArray& i, ViewA x0, ViewB x1);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(ModEventDelta med) const;
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    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);
    static  ExecStatus post(Space* home, IntSharedArray& i,
                            ViewA x0, ViewB x1);
    virtual size_t allocated(void) const;
    virtual size_t dispose(Space* home);
  };



  template <class ViewB> class IdxView;

  template <class VA, class VB, class VC, PropCond pc_ac>
  class View : public Propagator {
  protected:
    IdxView<VA>* iv;
    int n;
    VB x0;
    VC x1;
    View(Space* home, bool share, View& p);
    View(Space* home, IdxView<VA>* iv, int n, VB x0, VC x1);
    Reflection::ActorSpec spec(const Space* home, Reflection::VarMap& m,
                                const Support::Symbol& name) const;
  public:
    // Cost function (defined as dynamic PC_LINEAR_LO)
    virtual PropCost cost(ModEventDelta med) const;
    virtual size_t dispose(Space* home);
  };


  template <class VA, class VB, class VC>
  class ViewBnd : public View<VA,VB,VC,PC_INT_BND> {
  protected:
    using View<VA,VB,VC,PC_INT_BND>::iv;
    using View<VA,VB,VC,PC_INT_BND>::n;
    using View<VA,VB,VC,PC_INT_BND>::x0;
    using View<VA,VB,VC,PC_INT_BND>::x1;

    ViewBnd(Space* home, bool share, ViewBnd& p);
    ViewBnd(Space* home, IdxView<VA>* iv, int n, VB x0, VC x1);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    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);
    static  ExecStatus post(Space* home, IdxView<VA>* iv, int n,
                            VB x0, VC x1);
  };

  template <class VA, class VB, class VC>
  class ViewDom : public View<VA,VB,VC,PC_INT_DOM> {
  protected:
    using View<VA,VB,VC,PC_INT_DOM>::iv;
    using View<VA,VB,VC,PC_INT_DOM>::n;
    using View<VA,VB,VC,PC_INT_DOM>::x0;
    using View<VA,VB,VC,PC_INT_DOM>::x1;

    ViewDom(Space* home, bool share, ViewDom& p);
    ViewDom(Space* home, IdxView<VA>* iv, int n, VB x0, VC x1);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(ModEventDelta med) const;
    virtual ExecStatus propagate(Space* home, ModEventDelta med);
    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);
    static  ExecStatus post(Space* home, IdxView<VA>* iv, int n,
                            VB x0, VC x1);
  };

}}}

#include "gecode/int/element/int.icc"
#include "gecode/int/element/view.icc"

#endif


// STATISTICS: int-prop