atmostOne.hpp

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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Guido Tack <tack@gecode.org>
 *
 *  Copyright:
 *     Guido Tack, 2004
 *
 *  Last modified:
 *     $Date: 2009-10-12 17:36:53 +0200 (Mon, 12 Oct 2009) $ by $Author: schulte $
 *     $Revision: 9878 $
 *
 *  This file is part of Gecode, the generic constraint
 *  development environment:
 *     http://www.gecode.org
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namespace Gecode { namespace Set { namespace Distinct {

  /*
   * "AtMostOneIntersection" propagator
   *
   */

  forceinline
  AtmostOne::AtmostOne(Home home, ViewArray<SetView>& x, unsigned int _c)
    : NaryPropagator<SetView, PC_SET_ANY>(home,x), c(_c) {}

  forceinline
  AtmostOne::AtmostOne(Space& home, bool share, AtmostOne& p)
    : NaryPropagator<SetView, PC_SET_ANY>(home,share,p), c(p.c) {}

  forceinline ExecStatus
  AtmostOne::post(Home home, ViewArray<SetView> x, unsigned int c) {
    for (int i=x.size(); i--;) {
      GECODE_ME_CHECK(x[i].cardMin(home, c));
      GECODE_ME_CHECK(x[i].cardMax(home, c));
    }

    (void) new (home) AtmostOne(home,x,c);
    return ES_OK;
  }

}}}

// STATISTICS: set-prop