Generated on Thu Apr 5 2018 19:44:19 for Gecode by doxygen 1.8.13
nogoods.hh
Go to the documentation of this file.
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, 2013
8  *
9  * Last modified:
10  * $Date$ by $Author$
11  * $Revision$
12  *
13  * This file is part of Gecode, the generic constraint
14  * development environment:
15  * http://www.gecode.org
16  *
17  * Permission is hereby granted, free of charge, to any person obtaining
18  * a copy of this software and associated documentation files (the
19  * "Software"), to deal in the Software without restriction, including
20  * without limitation the rights to use, copy, modify, merge, publish,
21  * distribute, sublicense, and/or sell copies of the Software, and to
22  * permit persons to whom the Software is furnished to do so, subject to
23  * the following conditions:
24  *
25  * The above copyright notice and this permission notice shall be
26  * included in all copies or substantial portions of the Software.
27  *
28  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
32  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
33  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
34  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35  *
36  */
37 
38 #ifndef __GECODE_SEARCH_NOGOODS_HH__
39 #define __GECODE_SEARCH_NOGOODS_HH__
40 
41 #include <gecode/search.hh>
42 
43 namespace Gecode { namespace Search {
44 
46  class GECODE_VTABLE_EXPORT NoNGL : public NGL {
47  public:
49  NoNGL(void);
51  NoNGL(Space& home);
53  NoNGL(Space& home, NoNGL& ngl);
55  virtual void subscribe(Space& home, Propagator& p);
57  virtual void reschedule(Space& home, Propagator& p);
59  virtual void cancel(Space& home, Propagator& p);
61  virtual NGL::Status status(const Space& home) const;
63  virtual ExecStatus prune(Space& home);
65  virtual NGL* copy(Space& home);
66  };
67 
70  protected:
74  unsigned int n;
76  NoGoodsProp(Space& home, NGL* root);
78  NoGoodsProp(Space& home, NoGoodsProp& p);
79  public:
81  virtual Actor* copy(Space& home);
83  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
85  virtual void reschedule(Space& home);
87  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
89  template<class Path>
90  static ExecStatus post(Space& home, const Path& p);
92  virtual size_t dispose(Space& home);
93  };
94 
95 }}
96 
98 
99 #endif
100 
101 // STATISTICS: search-other
#define GECODE_SEARCH_EXPORT
Definition: search.hh:69
void cancel(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:85
Status
The status of a no-good literal.
Definition: core.hpp:1272
Base-class for propagators.
Definition: core.hpp:1016
Computation spaces.
Definition: core.hpp:1668
ExecStatus prune(Space &home, ViewArray< VX > &x, ConstIntView)
Definition: rel.hpp:268
Base-class for both propagators and branchers.
Definition: core.hpp:620
No-good propagator.
Definition: nogoods.hh:69
NGL * root
Root of no-good literal tree.
Definition: nogoods.hh:72
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
void subscribe(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:75
Propagation cost.
Definition: core.hpp:478
unsigned int n
Number of no-good literals with subscriptions.
Definition: nogoods.hh:74
ExecStatus
Definition: core.hpp:464
Gecode toplevel namespace
#define GECODE_VTABLE_EXPORT
Definition: support.hh:76
void reschedule(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:96
int ModEventDelta
Modification event deltas.
Definition: core.hpp:91
Class for a sentinel no-good literal.
Definition: nogoods.hh:46
TFE post(PropagatorGroup g)
Only post functions (but not propagators) from g are considered.
Definition: filter.cpp:142
No-good literal recorded during search.
Definition: core.hpp:1266