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channel.hh
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  *
6  * Copyright:
7  * Christian Schulte, 2006
8  *
9  * Last modified:
10  * $Date: 2011-07-07 11:23:22 +0200 (Thu, 07 Jul 2011) $ by $Author: schulte $
11  * $Revision: 12155 $
12  *
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37 
38 #ifndef __GECODE_INT_CHANNEL_HH__
39 #define __GECODE_INT_CHANNEL_HH__
40 
41 #include <gecode/int.hh>
42 #include <gecode/int/distinct.hh>
43 
49 namespace Gecode { namespace Int { namespace Channel {
50 
53 
58  template<class Info, class Offset, PropCond pc>
59  class Base : public Propagator {
60  protected:
62  int n;
64  int n_na;
70  Info* xy;
72  Base(Space& home, bool share, Base<Info,Offset,pc>& p);
74  Base(Home home, int n, Info* xy, Offset& ox, Offset& oy);
75  public:
77  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
79  virtual size_t dispose(Space& home);
80  };
81 
82 
87  template<class View> class ValInfo;
88 
98  template<class View, class Offset, bool shared>
99  class Val : public Base<ValInfo<View>,Offset,PC_INT_VAL> {
100  protected:
107  Val(Space& home, bool share, Val& p);
109  Val(Home home, int n, ValInfo<View>* xy, Offset& ox, Offset& oy);
110  public:
112  virtual Actor* copy(Space& home, bool share);
114  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
116  static ExecStatus post(Home home, int n, ValInfo<View>* xy,
117  Offset& ox, Offset& oy);
118  };
119 
124  template<class View, class Offset> class DomInfo;
125 
135  template<class View, class Offset, bool shared>
136  class Dom : public Base<DomInfo<View,Offset>,Offset,PC_INT_DOM> {
137  protected:
146  Dom(Space& home, bool share, Dom& p);
148  Dom(Home home, int n, DomInfo<View,Offset>* xy, Offset& ox, Offset& oy);
149  public:
151  virtual Actor* copy(Space& home, bool share);
158  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
160  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
162  static ExecStatus post(Home home, int n, DomInfo<View,Offset>* xy,
163  Offset& ox, Offset& oy);
164  };
165 
172  class LinkSingle :
173  public MixBinaryPropagator<BoolView,PC_BOOL_VAL,IntView,PC_INT_VAL> {
174  private:
177 
179  LinkSingle(Space& home, bool share, LinkSingle& p);
182  public:
184  virtual Actor* copy(Space& home, bool share);
186  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
188  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
190  static ExecStatus post(Home home, BoolView x0, IntView x1);
191  };
192 
199  class LinkMulti :
200  public MixNaryOnePropagator<BoolView,PC_BOOL_NONE,IntView,PC_INT_DOM> {
201  private:
207  static const int S_NONE = 0;
209  static const int S_ONE = 1;
211  static const int S_RUN = 2;
213  int status;
215  int o;
217  LinkMulti(Space& home, bool share, LinkMulti& p);
219  LinkMulti(Home home, ViewArray<BoolView>& x, IntView y, int o0);
220  public:
222  virtual Actor* copy(Space& home, bool share);
224  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
226  virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d);
228  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
231  static ExecStatus post(Home home,
232  ViewArray<BoolView>& x, IntView y, int o);
234  virtual size_t dispose(Space& home);
235  };
236 
237 }}}
238 
242 
245 
246 #endif
247 
248 // STATISTICS: int-prop
249