channel.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, 2006 00008 * 00009 * Last modified: 00010 * $Date: 2009-10-12 17:36:53 +0200 (Mon, 12 Oct 2009) $ by $Author: schulte $ 00011 * $Revision: 9878 $ 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_INT_CHANNEL_HH__ 00039 #define __GECODE_INT_CHANNEL_HH__ 00040 00041 #include <gecode/int.hh> 00042 #include <gecode/int/distinct.hh> 00043 00049 namespace Gecode { namespace Int { namespace Channel { 00050 00052 typedef Support::StaticStack<int,Region> ProcessStack; 00053 00058 template<class Info, PropCond pc> 00059 class Base : public Propagator { 00060 protected: 00062 int n; 00064 int n_na; 00066 Info* xy; 00068 Base(Space& home, bool share, Base<Info,pc>& p); 00070 Base(Home home, int n, Info* xy); 00071 public: 00073 virtual PropCost cost(const Space& home, const ModEventDelta& med) const; 00075 virtual size_t dispose(Space& home); 00076 }; 00077 00078 00083 template<class View> class ValInfo; 00084 00094 template<class View, bool shared> 00095 class Val : public Base<ValInfo<View>,PC_INT_VAL> { 00096 protected: 00097 using Base<ValInfo<View>,PC_INT_VAL>::n; 00098 using Base<ValInfo<View>,PC_INT_VAL>::n_na; 00099 using Base<ValInfo<View>,PC_INT_VAL>::xy; 00101 Val(Space& home, bool share, Val& p); 00103 Val(Home home, int n, ValInfo<View>* xy); 00104 public: 00106 virtual Actor* copy(Space& home, bool share); 00108 virtual ExecStatus propagate(Space& home, const ModEventDelta& med); 00110 static ExecStatus post(Home home, int n, ValInfo<View>* xy); 00111 }; 00112 00117 template<class View> class DomInfo; 00118 00128 template<class View, bool shared> 00129 class Dom : public Base<DomInfo<View>,PC_INT_DOM> { 00130 protected: 00131 using Base<DomInfo<View>,PC_INT_DOM>::n; 00132 using Base<DomInfo<View>,PC_INT_DOM>::n_na; 00133 using Base<DomInfo<View>,PC_INT_DOM>::xy; 00135 Distinct::DomCtrl<View> dc; 00137 Dom(Space& home, bool share, Dom& p); 00139 Dom(Home home, int n, DomInfo<View>* xy); 00140 public: 00142 virtual Actor* copy(Space& home, bool share); 00149 virtual PropCost cost(const Space& home, const ModEventDelta& med) const; 00151 virtual ExecStatus propagate(Space& home, const ModEventDelta& med); 00153 static ExecStatus post(Home home, int n, DomInfo<View>* xy); 00154 }; 00155 00162 class LinkSingle : 00163 public MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL> { 00164 private: 00165 using MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>::x0; 00166 using MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL>::x1; 00167 00169 LinkSingle(Space& home, bool share, LinkSingle& p); 00171 LinkSingle(Home home, BoolView x0, IntView x1); 00172 public: 00174 virtual Actor* copy(Space& home, bool share); 00176 virtual PropCost cost(const Space& home, const ModEventDelta& med) const; 00178 virtual ExecStatus propagate(Space& home, const ModEventDelta& med); 00180 static ExecStatus post(Home home, BoolView x0, IntView x1); 00181 }; 00182 00189 class LinkMulti : 00190 public MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM> { 00191 private: 00192 using MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM>::x; 00193 using MixNaryOnePropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_DOM>::y; 00195 int o; 00197 LinkMulti(Space& home, bool share, LinkMulti& p); 00199 LinkMulti(Home home, ViewArray<BoolView>& x, IntView y, int o0); 00200 public: 00202 virtual Actor* copy(Space& home, bool share); 00204 virtual PropCost cost(const Space& home, const ModEventDelta& med) const; 00206 virtual ExecStatus propagate(Space& home, const ModEventDelta& med); 00208 GECODE_INT_EXPORT 00209 static ExecStatus post(Home home, 00210 ViewArray<BoolView>& x, IntView y, int o); 00211 }; 00212 00213 }}} 00214 00215 #include <gecode/int/channel/base.hpp> 00216 #include <gecode/int/channel/val.hpp> 00217 #include <gecode/int/channel/dom.hpp> 00218 00219 #include <gecode/int/channel/link-single.hpp> 00220 #include <gecode/int/channel/link-multi.hpp> 00221 00222 #endif 00223 00224 // STATISTICS: int-prop 00225