support.hh
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, 2008 00008 * 00009 * Last modified: 00010 * $Date: 2016-04-19 17:19:45 +0200 (Tue, 19 Apr 2016) $ by $Author: schulte $ 00011 * $Revision: 14967 $ 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 #ifndef __GECODE_SEARCH_SUPPORT_HH__ 00039 #define __GECODE_SEARCH_SUPPORT_HH__ 00040 00041 #include <gecode/search.hh> 00042 00043 namespace Gecode { namespace Search { 00044 00046 forceinline Space* 00047 snapshot(Space* s, const Options& o, bool share=true); 00048 00050 template<class Worker> 00051 class WorkerToEngine : public Engine { 00052 protected: 00054 Worker w; 00055 public: 00057 WorkerToEngine(Space* s, const Options& o); 00059 virtual Space* next(void); 00061 virtual Search::Statistics statistics(void) const; 00063 virtual bool stopped(void) const; 00065 virtual void constrain(const Space& b); 00067 virtual void reset(Space* s); 00069 virtual NoGoods& nogoods(void); 00070 }; 00071 00072 00073 00074 forceinline Space* 00075 snapshot(Space* s, const Options& o, bool share) { 00076 return o.clone ? s->clone(share) : s; 00077 } 00078 00079 00080 template<class Worker> 00081 WorkerToEngine<Worker>::WorkerToEngine(Space* s, const Options& o) 00082 : w(s,o) {} 00083 template<class Worker> 00084 Space* 00085 WorkerToEngine<Worker>::next(void) { 00086 return w.next(); 00087 } 00088 template<class Worker> 00089 Search::Statistics 00090 WorkerToEngine<Worker>::statistics(void) const { 00091 return w.statistics(); 00092 } 00093 template<class Worker> 00094 bool 00095 WorkerToEngine<Worker>::stopped(void) const { 00096 return w.stopped(); 00097 } 00098 template<class Worker> 00099 void 00100 WorkerToEngine<Worker>::reset(Space* s) { 00101 w.reset(s); 00102 } 00103 template<class Worker> 00104 void 00105 WorkerToEngine<Worker>::constrain(const Space& b) { 00106 w.constrain(b); 00107 } 00108 template<class Worker> 00109 NoGoods& 00110 WorkerToEngine<Worker>::nogoods(void) { 00111 return w.nogoods(); 00112 } 00113 00114 }} 00115 00116 #endif 00117 00118 // STATISTICS: search-other