/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
 *  Main authors:
 *     Guido Tack <tack@gecode.org>
 *
 *  Contributing authors:
 *     Gabor Szokoli <szokoli@gecode.org>
 *
 *  Copyright:
 *     Guido Tack, 2004, 2005
 *
 *  Last modified:
 *     $Date: 2010-03-04 03:40:32 +1100 (Thu, 04 Mar 2010) $ by $Author: schulte $
 *     $Revision: 10365 $
 *
 *  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.
 *
 */

#include <gecode/set/rel-op.hh>

namespace Gecode {
  using namespace Gecode::Set;
  using namespace Gecode::Set::Rel;
  using namespace Gecode::Set::RelOp;

  void
  rel(Home home, SetOpType op, const IntVarArgs& x, SetVar y) {
    if (home.failed()) return;
    ViewArray<SingletonView> xa(home,x.size());
    for (int i=x.size(); i--;) {
      Int::IntView iv(x[i]);
      SingletonView sv(iv);
      xa[i] = sv;
    }

    switch (op) {
    case SOT_UNION:
      GECODE_ES_FAIL((RelOp::UnionN<SingletonView,SetView>
                           ::post(home, xa, y)));
      break;
    case SOT_DUNION:
      GECODE_ES_FAIL((RelOp::PartitionN<SingletonView,SetView>
                           ::post(home, xa, y)));
      break;
    case SOT_INTER:
      GECODE_ES_FAIL(
                     (RelOp::IntersectionN<SingletonView,SetView>
                      ::post(home, xa, y)));
      break;
    case SOT_MINUS:
      throw IllegalOperation("Set::rel");
      break;
    default:
      throw UnknownOperation("Set::rel");
    }
  }

  void
  rel(Home home, SetOpType op, const IntVarArgs& x, const IntSet& z, 
      SetVar y) {
    if (home.failed()) return;
    Set::Limits::check(z, "Set::rel");
    ViewArray<SingletonView> xa(home,x.size());
    for (int i=x.size(); i--;) {
      Int::IntView iv(x[i]);
      SingletonView sv(iv);
      xa[i] = sv;
    }

    switch (op) {
    case SOT_UNION:
      GECODE_ES_FAIL((RelOp::UnionN<SingletonView,SetView>
                           ::post(home, xa, z, y)));
      break;
    case SOT_DUNION:
      GECODE_ES_FAIL((RelOp::PartitionN<SingletonView,SetView>
                           ::post(home, xa, z, y)));
      break;
    case SOT_INTER:
      GECODE_ES_FAIL(
                     (RelOp::IntersectionN<SingletonView,SetView>
                      ::post(home, xa, z, y)));
      break;
    case SOT_MINUS:
      throw IllegalOperation("set::rel");
      break;
    default:
      throw UnknownOperation("Set::rel");
    }
  }
}

// STATISTICS: set-post