/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Christian Schulte <schulte@gecode.org>
 *
 *  Copyright:
 *     Christian Schulte, 2002
 *
 *  Last modified:
 *     $Date: 2008-01-31 18:29:16 +0100 (Thu, 31 Jan 2008) $ by $Author: tack $
 *     $Revision: 6017 $
 *
 *  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.
 *
 */

namespace Gecode {

  namespace Int {

    /*
     * Constructors and initialization
     *
     */
    forceinline
    OffsetView::OffsetView(void) {}
    forceinline
    OffsetView::OffsetView(const IntView& x, int d)
      : DerivedViewBase<IntView>(x), c(d) {}
    forceinline void
    OffsetView::init(const IntView& x, int d) {
      view=x; c=d;
    }
    forceinline int
    OffsetView::offset(void) const {
      return c;
    }
    forceinline
    OffsetView::OffsetView(Space* home, const Reflection::VarMap& vars,
                           Reflection::Arg* arg)
    : DerivedViewBase<IntView>(IntView(home, vars, arg->second())),
      c(arg->first()->toInt()) {}

    /*
     * Value access
     *
     */
    forceinline int
    OffsetView::min(void) const {
      return view.min()+c;
    }
    forceinline int
    OffsetView::max(void) const {
      return view.max()+c;
    }
    forceinline int
    OffsetView::med(void) const {
      return view.med()+c;
    }
    forceinline int
    OffsetView::val(void) const {
      return view.val()+c;
    }

    forceinline unsigned int
    OffsetView::width(void) const {
      return view.width();
    }
    forceinline unsigned int
    OffsetView::size(void) const {
      return view.size();
    }
    forceinline unsigned int
    OffsetView::regret_min(void) const {
      return view.regret_min();
    }
    forceinline unsigned int
    OffsetView::regret_max(void) const {
      return view.regret_max();
    }

    /*
     * Domain tests
     *
     */
    forceinline bool
    OffsetView::range(void) const {
      return view.range();
    }
    forceinline bool
    OffsetView::assigned(void) const {
      return view.assigned();
    }

    forceinline bool
    OffsetView::in(int n) const {
      return view.in(n-c);
    }
    forceinline bool
    OffsetView::in(double n) const {
      return view.in(n-c);
    }


    /*
     * Domain update by value
     *
     */
    forceinline ModEvent
    OffsetView::lq(Space* home, int n) {
      return view.lq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::lq(Space* home, double n) {
      return view.lq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::le(Space* home, int n) {
      return view.le(home,n-c);
    }
    forceinline ModEvent
    OffsetView::le(Space* home, double n) {
      return view.le(home,n-c);
    }
    forceinline ModEvent
    OffsetView::gq(Space* home, int n) {
      return view.gq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::gq(Space* home, double n) {
      return view.gq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::gr(Space* home, int n) {
      return view.gr(home,n-c);
    }
    forceinline ModEvent
    OffsetView::gr(Space* home, double n) {
      return view.gr(home,n-c);
    }
    forceinline ModEvent
    OffsetView::nq(Space* home, int n) {
      return view.nq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::nq(Space* home, double n) {
      return view.nq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::eq(Space* home, int n) {
      return view.eq(home,n-c);
    }
    forceinline ModEvent
    OffsetView::eq(Space* home, double n) {
      return view.eq(home,n-c);
    }


    /*
     * Iterator-based domain update
     *
     */
    template <class I>
    forceinline ModEvent
    OffsetView::narrow_r(Space* home, I& i, bool depend) {
      Iter::Ranges::Offset<I> oi(i,-c); 
      return view.narrow_r(home,oi,depend);
    }
    template <class I>
    forceinline ModEvent
    OffsetView::inter_r(Space* home, I& i, bool depend) {
      Iter::Ranges::Offset<I> oi(i,-c); 
      return view.inter_r(home,oi,depend);
    }
    template <class I>
    forceinline ModEvent
    OffsetView::minus_r(Space* home, I& i, bool depend) {
      Iter::Ranges::Offset<I> oi(i,-c); 
      return view.minus_r(home,oi,depend);
    }
    template <class I>
    forceinline ModEvent
    OffsetView::narrow_v(Space* home, I& i, bool depend) {
      Iter::Values::Offset<I> oi(i,-c); 
      return view.narrow_v(home,oi,depend);
    }
    template <class I>
    forceinline ModEvent
    OffsetView::inter_v(Space* home, I& i, bool depend) {
      Iter::Values::Offset<I> oi(i,-c); 
      return view.inter_v(home,oi,depend);
    }
    template <class I>
    forceinline ModEvent
    OffsetView::minus_v(Space* home, I& i, bool depend) {
      Iter::Values::Offset<I> oi(i,-c); 
      return view.minus_v(home,oi,depend);
    }



    /*
     * Propagator modification events
     *
     */
    forceinline void
    OffsetView::schedule(Space* home, Propagator* p, ModEvent me) {
      return IntView::schedule(home,p,me);
    }
    forceinline ModEvent
    OffsetView::me(ModEventDelta med) {
      return IntView::me(med);
    }
    forceinline ModEventDelta
    OffsetView::med(ModEvent me) {
      return IntView::med(me);
    }


    /*
     * Dependencies
     *
     */
    forceinline void
    OffsetView::subscribe(Space* home, Propagator* p, PropCond pc, 
                          bool process) {
      view.subscribe(home,p,pc,process);
    }
    forceinline void
    OffsetView::cancel(Space* home, Propagator* p, PropCond pc) {
      view.cancel(home,p,pc);
    }
    forceinline void
    OffsetView::subscribe(Space* home, Advisor* a) {
      view.subscribe(home,a);
    }
    forceinline void
    OffsetView::cancel(Space* home, Advisor* a) {
      view.cancel(home,a);
    }


    /*
     * Delta information for advisors
     *
     */
    forceinline ModEvent
    OffsetView::modevent(const Delta* d) {
      return IntView::modevent(d);
    }
    forceinline int
    OffsetView::min(const Delta* d) const {
      return view.min(d)+c;
    }
    forceinline int
    OffsetView::max(const Delta* d) const {
      return view.max(d)+c;
    }
    forceinline bool
    OffsetView::any(const Delta* d) const {
      return view.any(d);
    }



    /*
     * Cloning
     *
     */
    forceinline void
    OffsetView::update(Space* home, bool share, OffsetView& x) {
      c=x.c; view.update(home,share,x.view);
    }

    /*
     * Serialization
     *
     */
    forceinline Reflection::Arg*
    OffsetView::spec(const Space* home, Reflection::VarMap& m) const {
      return Reflection::Arg::newPair(Reflection::Arg::newInt(c), 
                                      view.spec(home, m));
    }
    inline Support::Symbol
    OffsetView::type(void) {
      return Support::Symbol("Gecode::Int::OffsetView");
    }

    /**
     * \brief %Range iterator for offset integer views
     * \ingroup TaskActorIntView
     */
    template <>
    class ViewRanges<OffsetView>
      : public Iter::Ranges::Offset<ViewRanges<IntView> > {
    public:
      /// \name Constructors and initialization
      //@{
      /// Default constructor
      ViewRanges(void);
      /// Initialize with ranges for view \a x
      ViewRanges(const OffsetView& x);
      /// Initialize with ranges for view \a x
      void init(const OffsetView& x);
      //@}
    };

    forceinline
    ViewRanges<OffsetView>::ViewRanges(void) {}

    forceinline
    ViewRanges<OffsetView>::ViewRanges(const OffsetView& x) {
      ViewRanges<IntView> xi(x.base());
      Iter::Ranges::Offset<ViewRanges<IntView> >::init(xi,x.offset());
    }

    forceinline void
    ViewRanges<OffsetView>::init(const OffsetView& x) {
      ViewRanges<IntView> xi(x.base());
      Iter::Ranges::Offset<ViewRanges<IntView> >::init(xi,x.offset());
    }
  }

  /*
   * View comparison
   *
   */
  forceinline bool
  same(const Int::OffsetView& x, const Int::OffsetView& y) {
    return same(x.base(),y.base()) && (x.offset() == y.offset());
  }
  forceinline bool
  before(const Int::OffsetView& x, const Int::OffsetView& y) {
    return before(x.base(),y.base())
      || (same(x.base(),y.base()) && (x.offset() < y.offset()));
  }

}

// STATISTICS: int-var