seq-u.hpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Guido Tack <tack@gecode.org> 00005 * Christian Schulte <schulte@gecode.org> 00006 * 00007 * Contributing authors: 00008 * Gabor Szokoli <szokoli@gecode.org> 00009 * 00010 * Copyright: 00011 * Guido Tack, 2004 00012 * Christian Schulte, 2004 00013 * Gabor Szokoli, 2004 00014 * 00015 * This file is part of Gecode, the generic constraint 00016 * development environment: 00017 * http://www.gecode.org 00018 * 00019 * Permission is hereby granted, free of charge, to any person obtaining 00020 * a copy of this software and associated documentation files (the 00021 * "Software"), to deal in the Software without restriction, including 00022 * without limitation the rights to use, copy, modify, merge, publish, 00023 * distribute, sublicense, and/or sell copies of the Software, and to 00024 * permit persons to whom the Software is furnished to do so, subject to 00025 * the following conditions: 00026 * 00027 * The above copyright notice and this permission notice shall be 00028 * included in all copies or substantial portions of the Software. 00029 * 00030 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00031 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00032 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00033 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00034 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00035 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00036 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00037 * 00038 */ 00039 00040 namespace Gecode { namespace Set { namespace Sequence { 00041 00042 /* 00043 * "Sequenced union" propagator 00044 * 00045 */ 00046 00047 forceinline 00048 SeqU::SeqU(Home home, ViewArray<SetView>& x, SetView y) 00049 : NaryOnePropagator<SetView,PC_SET_ANY>(home,x, y) {} 00050 00051 forceinline 00052 SeqU::SeqU(Space& home, SeqU& p) 00053 : NaryOnePropagator<SetView,PC_SET_ANY>(home,p) { 00054 unionOfDets.update(home, p.unionOfDets); 00055 } 00056 00057 forceinline ExecStatus 00058 SeqU::post(Home home, ViewArray<SetView> x, SetView y) { 00059 switch (x.size()) { 00060 case 0: 00061 GECODE_ME_CHECK(y.cardMax(home, 0)); 00062 return ES_OK; 00063 case 1: 00064 return Rel::Eq<SetView,SetView>::post(home, x[0], y); 00065 default: 00066 if (shared(x) || shared(x,y)) 00067 return ES_FAILED; 00068 (void) new (home) SeqU(home,x,y); 00069 return ES_OK; 00070 } 00071 } 00072 00073 }}} 00074 00075 // STATISTICS: set-prop