Contents

/*
 *  Main authors:
 *     Guido Tack <[e-mail]>
 *     Christian Schulte <[e-mail]>
 *     Gabor Szokoli <[e-mail]>
 *
 *  Copyright:
 *     Guido Tack, 2004
 *     Christian Schulte, 2004
 *     Gabor Szokoli, 2004
 *
 *  Last modified:
 *     $Date: 2006-04-11 15:58:37 +0200 (Tue, 11 Apr 2006) $ by $Author: tack $
 *     $Revision: 3188 $
 *
 *  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.
 *
 */



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

namespace Gecode { namespace Set { namespace Int {

  forceinline
  Channel::Channel(Space* home,
		   ViewArray< Gecode::Int::IntView >& xs0,
		   ViewArray< SetView >& ys0)
    : Propagator(home), xs(xs0), ys(ys0) {
    xs.subscribe(home,this, Gecode::Int::PC_INT_DOM);
    ys.subscribe(home,this, PC_SET_ANY);
  }

  forceinline
  Channel::Channel(Space* home, bool share,
		   Channel& p)
    : Propagator(home,share,p) {
    xs.update(home,share,p.xs);
    ys.update(home,share,p.ys);
  }

  forceinline ExecStatus
  Channel::post(Space* home, ViewArray<Gecode::Int::IntView>& xs,
		ViewArray<SetView>& ys) {
    // Sharing of ys is taken care of in the propagator:
    // The ys are propagated to be disjoint, so shared variables
    // result in failure.
    unsigned int xssize = xs.size();
    for (int i=ys.size(); i--;) {
      GECODE_ME_CHECK(ys[i].exclude(home, xssize, Limits::Set::int_max));
      GECODE_ME_CHECK(ys[i].exclude(home, Limits::Set::int_min, -1));
    }
    unsigned int yssize = ys.size();
    if (yssize > static_cast<unsigned int>(Limits::Int::int_max))
      return ES_FAILED;
    for (int i=xs.size(); i--;) {
      GECODE_ME_CHECK(xs[i].gq(home, 0));
      GECODE_ME_CHECK(xs[i].le(home, static_cast<int>(yssize)));
    }

    (void) new (home) Channel(home,xs,ys);
    return ES_OK;
  }

}}}

// STATISTICS: set-prop

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
gecoder-with-gecode-0.7.1	ext/gecode-1.3.1/gecode/set/int/channel.icc