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/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2002
 *     Guido Tack, 2004
 *
 *  Last modified:
 *     $Date: 2006-09-19 16:52:16 +0200 (Tue, 19 Sep 2006) $ by $Author: schulte $
 *     $Revision: 3684 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
 *
 *  See the file "LICENSE" for information on usage and
 *  redistribution of this file, and for a
 *     DISCLAIMER OF ALL WARRANTIES.
 *
 */

#ifndef __GECODE_INT_COUNT_HH__
#define __GECODE_INT_COUNT_HH__

#include "gecode/int.hh"

namespace Gecode { namespace Int { namespace Count {


  template <class VX>
  RelTest holds(VX x, VX y);
  template <class VX>
  RelTest holds(VX x, ConstIntView y);
  template <class VX>
  ExecStatus post_true(Space* home, ViewArray<VX>& x, VX y);
  template <class VX>
  ExecStatus post_true(Space* home, ViewArray<VX>& x, ConstIntView y);
  template <class VX>
  ExecStatus post_false(Space* home, ViewArray<VX>& x, VX y);
  template <class VX>
  ExecStatus post_false(Space* home, ViewArray<VX>& x, ConstIntView y);

}}}

#include "gecode/int/count/rel.icc"


namespace Gecode { namespace Int { namespace Count {

  template <class VX, class VY>
  class BaseInt : public Propagator {
  protected:
    ViewArray<VX> x;
    int n_s;
    VY y;
    int c;
    BaseInt(Space* home, bool share, BaseInt& p);
    BaseInt(Space* home, ViewArray<VX>& x, int n_s, VY y, int c);
  public:
    virtual PropCost cost(void) const;
    virtual size_t dispose(Space* home);
  };

  template <class VX, class VY>
  class EqInt : public BaseInt<VX,VY> {
  protected:
    using BaseInt<VX,VY>::x;
    using BaseInt<VX,VY>::n_s;
    using BaseInt<VX,VY>::y;
    using BaseInt<VX,VY>::c;
    EqInt(Space* home, bool share, EqInt& p);
    EqInt(Space* home, ViewArray<VX>& x, int n_s, VY y, int c);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, int c);
  };

  template <class VX, class VY>
  class GqInt : public BaseInt<VX,VY> {
  protected:
    using BaseInt<VX,VY>::x;
    using BaseInt<VX,VY>::n_s;
    using BaseInt<VX,VY>::y;
    using BaseInt<VX,VY>::c;
    GqInt(Space* home, bool share, GqInt& p);
    GqInt(Space* home, ViewArray<VX>& x, int n_s, VY y, int c);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, int c);
  };

  template <class VX, class VY>
  class LqInt : public BaseInt<VX,VY> {
  protected:
    using BaseInt<VX,VY>::x;
    using BaseInt<VX,VY>::n_s;
    using BaseInt<VX,VY>::y;
    using BaseInt<VX,VY>::c;
    LqInt(Space* home, bool share, LqInt& p);
    LqInt(Space* home, ViewArray<VX>& x, int n_s, VY y, int c);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, int c);
  };

  template<class VX, class VY>
  class NqInt : public BinaryPropagator<VX,PC_INT_DOM> {
  protected:
    using BinaryPropagator<VX,PC_INT_DOM>::x0;
    using BinaryPropagator<VX,PC_INT_DOM>::x1;
    ViewArray<VX> x;
    VY y;
    int c;
    bool resubscribe(Space* home, VX& z);
    NqInt(Space* home,  ViewArray<VX>& x, VY y, int c);
    NqInt(Space* home, bool share, NqInt& p);
  public:
    virtual Actor* copy(Space* home, bool share);
    virtual PropCost cost(void) const;
    virtual ExecStatus propagate(Space* home);
    static  ExecStatus post(Space* home, ViewArray<VX>& x, VY y, int c);
    virtual size_t dispose(Space* home);
  };

}}}

#include "gecode/int/count/int.icc"


namespace Gecode { namespace Int { namespace Count {

  template <class VX, class VY, class VZ, bool shr>
  class BaseView : public Propagator {
  protected:
    ViewArray<VX> x;
    VY y;
    VZ z;
    int   c;
    BaseView(Space* home, bool shr, BaseView& p);
    BaseView(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
  public:
    virtual size_t dispose(Space* home);
    virtual PropCost cost(void) const;
  protected:
    void count(Space* home);
    int atleast(void) const;
    int atmost(void) const;
    static bool sharing(const ViewArray<VX>& x, const VY& y, const VZ& z);
  };

  template <class VX, class VY, class VZ, bool shr>
  class EqView : public BaseView<VX,VY,VZ,shr> {
  protected:
    using BaseView<VX,VY,VZ,shr>::x;
    using BaseView<VX,VY,VZ,shr>::z;
    using BaseView<VX,VY,VZ,shr>::c;
    using BaseView<VX,VY,VZ,shr>::y;
    using BaseView<VX,VY,VZ,shr>::count;
    using BaseView<VX,VY,VZ,shr>::atleast;
    using BaseView<VX,VY,VZ,shr>::atmost;

    EqView(Space* home, bool shr, EqView& p);
  public:
    EqView(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
    virtual Actor* copy(Space* home, bool shr);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
  };

  template <class VX, class VY, class VZ, bool shr>
  class NqView : public BaseView<VX,VY,VZ,shr> {
  protected:
    using BaseView<VX,VY,VZ,shr>::x;
    using BaseView<VX,VY,VZ,shr>::z;
    using BaseView<VX,VY,VZ,shr>::c;
    using BaseView<VX,VY,VZ,shr>::y;
    using BaseView<VX,VY,VZ,shr>::count;
    using BaseView<VX,VY,VZ,shr>::atleast;
    using BaseView<VX,VY,VZ,shr>::atmost;

    NqView(Space* home, bool shr, NqView& p);
  public:
    NqView(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
    virtual Actor* copy(Space* home, bool shr);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
  };

  template <class VX, class VY, class VZ, bool shr>
  class LqView : public BaseView<VX,VY,VZ,shr> {
  protected:
    using BaseView<VX,VY,VZ,shr>::x;
    using BaseView<VX,VY,VZ,shr>::z;
    using BaseView<VX,VY,VZ,shr>::c;
    using BaseView<VX,VY,VZ,shr>::y;
    using BaseView<VX,VY,VZ,shr>::count;
    using BaseView<VX,VY,VZ,shr>::atleast;
    using BaseView<VX,VY,VZ,shr>::atmost;

    LqView(Space* home, bool shr, LqView& p);
  public:
    LqView(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
    virtual Actor* copy(Space* home, bool shr);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
  };

  template <class VX, class VY, class VZ, bool shr>
  class GqView : public BaseView<VX,VY,VZ,shr> {
  protected:
    using BaseView<VX,VY,VZ,shr>::x;
    using BaseView<VX,VY,VZ,shr>::z;
    using BaseView<VX,VY,VZ,shr>::c;
    using BaseView<VX,VY,VZ,shr>::y;
    using BaseView<VX,VY,VZ,shr>::count;
    using BaseView<VX,VY,VZ,shr>::atleast;
    using BaseView<VX,VY,VZ,shr>::atmost;

    GqView(Space* home, bool shr, GqView& p);
  public:
    GqView(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
    virtual Actor* copy(Space* home, bool share);
    virtual ExecStatus propagate(Space* home);
    static ExecStatus post(Space* home, ViewArray<VX>& x, VY y, VZ z, int c);
  };

}}}

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

#endif

// STATISTICS: int-prop