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precede.hh
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christopher Mears <Chris.Mears@monash.edu>
5  *
6  * Contributing authors:
7  * Christian Schulte <schulte@gecode.org>
8  * Guido Tack <tack@gecode.org>
9  *
10  * Copyright:
11  * Christopher Mears, 2011
12  * Christian Schulte, 2011
13  * Guido Tack, 2011
14  *
15  * This file is part of Gecode, the generic constraint
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17  * http://www.gecode.org
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39 
40 #ifndef __GECODE_SET_PRECEDE_HH__
41 #define __GECODE_SET_PRECEDE_HH__
42 
43 #include <gecode/set.hh>
44 
50 namespace Gecode { namespace Set { namespace Precede {
51 
62  template<class View>
63  class Single : public NaryPropagator<View,PC_SET_NONE> {
64  protected:
67  class Index : public Advisor {
68  public:
70  int i;
72  Index(Space& home, Propagator& p, Council<Index>& c, int i);
74  Index(Space& home, Index& a);
75  };
79  int s, t;
81  int alpha, beta, gamma;
87  Single(Home home, ViewArray<View>& x, int s, int t, int beta, int gamma);
89  Single(Space& home, Single<View>& p);
90  public:
92  virtual Propagator* copy(Space& home);
94  virtual PropCost cost(const Space&, const ModEventDelta&) const;
96  virtual void reschedule(Space& home);
98  virtual size_t dispose(Space& home);
100  virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d);
102  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
104  static ExecStatus post(Home home, ViewArray<View>& x, int s, int t);
105  };
106 
107 }}}
108 
110 
111 #endif
112 
113 // STATISTICS: set-prop
Council of advisors
Definition: core.hpp:154
Council< Index > c
The advisor council.
Definition: precede.hh:77
virtual Propagator * copy(Space &home)
Copy propagator during cloning.
Definition: single.hpp:150
Single(Home home, ViewArray< View > &x, int s, int t, int beta, int gamma)
Constructor for posting.
Definition: single.hpp:88
ViewArray< View > x
Array of views.
Definition: pattern.hpp:145
Base-class for propagators.
Definition: core.hpp:1023
Base-class for advisors.
Definition: core.hpp:1251
int i
The position of the view in the view array.
Definition: precede.hh:70
ExecStatus updateAlpha(Space &home)
Update the alpha pointer.
Definition: single.hpp:56
static ExecStatus post(Home home, ViewArray< View > &x, int s, int t)
Post propagator that s precedes t in x.
Definition: single.hpp:100
virtual ExecStatus advise(Space &home, Advisor &a, const Delta &d)
Give advice to propagator.
Definition: single.hpp:197
Computation spaces.
Definition: core.hpp:1701
Gecode::IntSet d(v, 7)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
ExecStatus updateBeta(Space &home)
Update the beta pointer.
Definition: single.hpp:73
ModEventDelta med
A set of modification events (used during propagation)
Definition: core.hpp:1034
int alpha
Pointers updated during propagation.
Definition: precede.hh:81
Advisors for views (by position in array)
Definition: precede.hh:67
n-ary propagator
Definition: pattern.hpp:142
View arrays.
Definition: array.hpp:235
Single value precedence propagator.
Definition: precede.hh:63
virtual void reschedule(Space &home)
Schedule function.
Definition: single.hpp:191
Generic domain change information to be supplied to advisors.
Definition: core.hpp:203
void dispose(Space &home, Council< A > &c)
Dispose the advisor.
Definition: core.hpp:3791
Propagation cost.
Definition: core.hpp:485
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition: single.hpp:222
ExecStatus
Definition: core.hpp:471
Index(Space &home, Propagator &p, Council< Index > &c, int i)
Create index advisor.
Definition: single.hpp:44
Gecode toplevel namespace
int s
The value s must precede t.
Definition: precede.hh:79
virtual PropCost cost(const Space &, const ModEventDelta &) const
Cost function.
Definition: single.hpp:185
int ModEventDelta
Modification event deltas.
Definition: core.hpp:89
Home class for posting propagators
Definition: core.hpp:853
struct Gecode::@593::NNF::@62::@64 a
For atomic nodes.