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precede.hh
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2 /*
3  * Main authors:
4  * Christopher Mears <Chris.Mears@monash.edu>
5  *
6  * Contributing authors:
7  * Christian Schulte <schulte@gecode.org>
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9  * Copyright:
10  * Christopher Mears, 2011
11  * Christian Schulte, 2011
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14  * $Date: 2011-06-30 16:20:54 +0200 (Thu, 30 Jun 2011) $ by $Author: schulte $
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41 
42 #ifndef __GECODE_INT_PRECEDE_HH__
43 #define __GECODE_INT_PRECEDE_HH__
44 
45 #include <gecode/int.hh>
46 
52 namespace Gecode { namespace Int { namespace Precede {
53 
64  template<class View>
65  class Single : public NaryPropagator<View,PC_INT_NONE> {
66  protected:
69  class Index : public Advisor {
70  public:
72  int i;
74  Index(Space& home, Propagator& p, Council<Index>& c, int i);
76  Index(Space& home, bool share, Index& a);
77  };
81  int s, t;
83  int alpha, beta, gamma;
89  Single(Home home, ViewArray<View>& x, int s, int t, int beta, int gamma);
91  Single(Space& home, bool share, Single<View>& p);
92  public:
94  virtual Propagator* copy(Space& home, bool share);
96  virtual PropCost cost(const Space&, const ModEventDelta&) const;
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: int-prop
Council of advisors
Definition: core.hpp:226
int s
The value s must precede t.
Definition: precede.hh:81
virtual size_t dispose(Space &home)
Delete propagator and return its size.
Definition: single.hpp:164
Single(Home home, ViewArray< View > &x, int s, int t, int beta, int gamma)
Constructor for posting.
Definition: single.hpp:88
Council< Index > c
The advisor council.
Definition: precede.hh:79
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition: single.hpp:209
Advisors for views (by position in array)
Definition: precede.hh:69
int i
The position of the view in the view array.
Definition: precede.hh:72
ViewArray< View > x
Array of views.
Definition: propagator.hpp:146
Base-class for propagators.
Definition: core.hpp:755
Base-class for advisors.
Definition: core.hpp:926
Computation spaces.
Definition: core.hpp:1362
Gecode::IntSet d(v, 7)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
ModEventDelta med
A set of modification events (used during propagation)
Definition: core.hpp:764
n-ary propagator
Definition: propagator.hpp:143
virtual ExecStatus advise(Space &home, Advisor &a, const Delta &d)
Give advice to propagator.
Definition: single.hpp:181
int alpha
Pointers updated during propagation.
Definition: precede.hh:83
View arrays.
Definition: array.hpp:234
static ExecStatus post(Home home, ViewArray< View > &x, int s, int t)
Post propagator that s precedes t in x.
Definition: single.hpp:100
Index(Space &home, Propagator &p, Council< Index > &c, int i)
Create index advisor.
Definition: single.hpp:53
Generic domain change information to be supplied to advisors.
Definition: core.hpp:275
Propagation cost.
Definition: core.hpp:537
ExecStatus
Definition: core.hpp:523
ExecStatus updateAlpha(Space &home)
Update the alpha pointer.
Definition: single.hpp:65
Single value precedence propagator.
Definition: precede.hh:65
ExecStatus updateBeta(Space &home)
Update the beta pointer.
Definition: single.hpp:76
Gecode toplevel namespace
int ModEventDelta
Modification event deltas.
Definition: core.hpp:173
Home class for posting propagators
Definition: core.hpp:717
virtual Propagator * copy(Space &home, bool share)
Copy propagator during cloning.
Definition: single.hpp:140
struct Gecode::@518::NNF::@57::@59 a
For atomic nodes.
virtual PropCost cost(const Space &, const ModEventDelta &) const
Cost function.
Definition: single.hpp:175