when.hpp
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: 2017-02-21 01:08:52 +0100 (Tue, 21 Feb 2017) $ by $Author: schulte $ 00011 * $Revision: 15456 $ 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 Int { namespace Exec { 00039 00040 forceinline 00041 When::When(Home home, BoolView x, 00042 std::function<void(Space& home)> t0, 00043 std::function<void(Space& home)> e0) 00044 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,x), t(t0), e(e0) { 00045 home.notice(*this,AP_DISPOSE); 00046 } 00047 00048 forceinline 00049 When::When(Space& home, bool share, When& p) 00050 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,share,p) { 00051 t.update(home, share, p.t); 00052 e.update(home, share, p.e); 00053 } 00054 00055 forceinline ExecStatus 00056 When::post(Home home, BoolView x, 00057 std::function<void(Space& home)> t, 00058 std::function<void(Space& home)> e) { 00059 if (!t) 00060 throw InvalidFunction("When::When"); 00061 if (!e) 00062 throw InvalidFunction("When::When"); 00063 if (x.zero()) { 00064 e(home); 00065 return home.failed() ? ES_FAILED : ES_OK; 00066 } else if (x.one()) { 00067 t(home); 00068 return home.failed() ? ES_FAILED : ES_OK; 00069 } else { 00070 (void) new (home) When(home,x,t,e); 00071 return ES_OK; 00072 } 00073 } 00074 00075 }}} 00076 00077 // STATISTICS: int-prop 00078