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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: 2016-06-29 17:28:17 +0200 (Wed, 29 Jun 2016) $ by $Author: schulte $
 *     $Revision: 15137 $
 *
 *  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
 *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#ifndef __GECODE_INT_IDX_VIEW_HH__
#define __GECODE_INT_IDX_VIEW_HH__

#include <gecode/int.hh>

namespace Gecode { namespace Int {

  /**
   * \brief Class for pair of index and view
   *
   */
  template<class View>
  class IdxView {
  public:
    /// The index
    int idx;
    /// Thhe view
    View view;
    /// Allocate memory for \a n index-view pairs
    static IdxView* allocate(Space& home, int n);
  };

  /// Class to map VarArg type to view
  template<class View>
  class ViewToVarArg {};

  /**
   * \brief An array of IdxView pairs
   *
   */
  template<class View>
  class IdxViewArray {
  private:
    /// The actual array
    IdxView<View>* xs;
    /// The size of the array
    int n;
  public:
    /// Default constructor
    IdxViewArray(void);
    /// Copy constructor
    IdxViewArray(const IdxViewArray<View>&);
    /// Construct an IdxViewArray from \a x
    IdxViewArray(Space& home, const typename ViewToVarArg<View>::argtype& x);
    /// Construct an IdxViewArray of size \a n
    IdxViewArray(Space& home, int n);

    /// Return the current size
    int size(void) const;
    /// Set the size to \a n
    void size(int n);

    /// Access element \a n
    IdxView<View>& operator [](int n);
    /// Access element \a n
    const IdxView<View>& operator [](int) const;

    /**
     * Subscribe propagator \a p with propagation condition \a pc
     * to all elements of the array.
     */
    void subscribe(Space& home, Propagator& p, PropCond pc, bool process=true);
    /**
     * Cancel subscription of propagator \a p with propagation condition \a pc
     * for all elements of the array.
     */
    void cancel(Space& home, Propagator& p, PropCond pc);
    /// Schedule propagator \a p
    void reschedule(Space& home, Propagator& p, PropCond pc);

    /// Cloning
    void update(Space& home, bool share, IdxViewArray<View>& x);
  };

  /**
   * \brief Print array elements enclosed in curly brackets
   * \relates IdxViewArray
   */
  template<class Char, class Traits, class View>
  std::basic_ostream<Char,Traits>&
  operator <<(std::basic_ostream<Char,Traits>& os,
              const IdxViewArray<View>& x);

}}

#include <gecode/int/idx-view.hpp>

#endif


// STATISTICS: int-prop