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atmostOne.hpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Guido Tack <tack@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Guido Tack, 2004
00008  *
00009  *  Last modified:
00010  *     $Date: 2009-10-12 17:36:53 +0200 (Mon, 12 Oct 2009) $ by $Author: schulte $
00011  *     $Revision: 9878 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 namespace Gecode { namespace Set { namespace Distinct {
00039 
00040   /*
00041    * "AtMostOneIntersection" propagator
00042    *
00043    */
00044 
00045   forceinline
00046   AtmostOne::AtmostOne(Home home, ViewArray<SetView>& x, unsigned int _c)
00047     : NaryPropagator<SetView, PC_SET_ANY>(home,x), c(_c) {}
00048 
00049   forceinline
00050   AtmostOne::AtmostOne(Space& home, bool share, AtmostOne& p)
00051     : NaryPropagator<SetView, PC_SET_ANY>(home,share,p), c(p.c) {}
00052 
00053   forceinline ExecStatus
00054   AtmostOne::post(Home home, ViewArray<SetView> x, unsigned int c) {
00055     for (int i=x.size(); i--;) {
00056       GECODE_ME_CHECK(x[i].cardMin(home, c));
00057       GECODE_ME_CHECK(x[i].cardMax(home, c));
00058     }
00059 
00060     (void) new (home) AtmostOne(home,x,c);
00061     return ES_OK;
00062   }
00063 
00064 }}}
00065 
00066 // STATISTICS: set-prop