when.cpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2009 00008 * 00009 * Last modified: 00010 * $Date: 2010-03-03 17:32:21 +0100 (Wed, 03 Mar 2010) $ by $Author: schulte $ 00011 * $Revision: 10364 $ 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 #include <gecode/int/exec.hh> 00039 00040 namespace Gecode { namespace Int { namespace Exec { 00041 00042 ExecStatus 00043 When::post(Home home, BoolView x, void (*t)(Space&), void (*e)(Space&)) { 00044 if (x.zero() && (e != NULL)) { 00045 e(home); 00046 return home.failed() ? ES_FAILED : ES_OK; 00047 } else if (x.zero() && (t != NULL)) { 00048 t(home); 00049 return home.failed() ? ES_FAILED : ES_OK; 00050 } else { 00051 (void) new (home) When(home,x,t,e); 00052 return ES_OK; 00053 } 00054 } 00055 00056 Actor* 00057 When::copy(Space& home, bool share) { 00058 return new (home) When(home,share,*this); 00059 } 00060 00061 ExecStatus 00062 When::propagate(Space& home, const ModEventDelta&) { 00063 if (x0.zero() && (e != NULL)) { 00064 e(home); 00065 } else if (t != NULL) { 00066 assert(x0.one()); 00067 t(home); 00068 } 00069 if (home.failed()) return ES_FAILED; 00070 return home.ES_SUBSUMED(*this); 00071 } 00072 00073 00074 }}} 00075 00076 // STATISTICS: int-prop 00077