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 * This file is part of Gecode, the generic constraint 00010 * development environment: 00011 * http://www.gecode.org 00012 * 00013 * Permission is hereby granted, free of charge, to any person obtaining 00014 * a copy of this software and associated documentation files (the 00015 * "Software"), to deal in the Software without restriction, including 00016 * without limitation the rights to use, copy, modify, merge, publish, 00017 * distribute, sublicense, and/or sell copies of the Software, and to 00018 * permit persons to whom the Software is furnished to do so, subject to 00019 * the following conditions: 00020 * 00021 * The above copyright notice and this permission notice shall be 00022 * included in all copies or substantial portions of the Software. 00023 * 00024 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00025 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00026 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00027 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00028 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00029 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00030 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00031 * 00032 */ 00033 00034 namespace Gecode { namespace Int { namespace Exec { 00035 00036 forceinline 00037 When::When(Home home, BoolView x, 00038 std::function<void(Space& home)> t0, 00039 std::function<void(Space& home)> e0) 00040 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,x), t(t0), e(e0) { 00041 home.notice(*this,AP_DISPOSE); 00042 } 00043 00044 forceinline 00045 When::When(Space& home, When& p) 00046 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,p), t(p.t), e(p.e) { 00047 } 00048 00049 forceinline ExecStatus 00050 When::post(Home home, BoolView x, 00051 std::function<void(Space& home)> t, 00052 std::function<void(Space& home)> e) { 00053 if (!t) 00054 throw InvalidFunction("When::When"); 00055 if (!e) 00056 throw InvalidFunction("When::When"); 00057 if (x.zero()) { 00058 e(home); 00059 return home.failed() ? ES_FAILED : ES_OK; 00060 } else if (x.one()) { 00061 t(home); 00062 return home.failed() ? ES_FAILED : ES_OK; 00063 } else { 00064 (void) new (home) When(home,x,t,e); 00065 return ES_OK; 00066 } 00067 } 00068 00069 }}} 00070 00071 // STATISTICS: int-prop 00072