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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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10 * Christopher Mears, 2011
11 * Christian Schulte, 2011
12 *
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37
38#ifndef __GECODE_INT_PRECEDE_HH__
39#define __GECODE_INT_PRECEDE_HH__
40
41#include <gecode/int.hh>
42
48namespace Gecode { namespace Int { namespace Precede {
49
60 template<class View>
61 class Single : public NaryPropagator<View,PC_INT_NONE> {
62 protected:
65 class Index : public Advisor {
66 public:
68 int i;
70 Index(Space& home, Propagator& p, Council<Index>& c, int i);
72 Index(Space& home, Index& a);
73 };
77 int s, t;
85 Single(Home home, ViewArray<View>& x, int s, int t, int beta, int gamma);
87 Single(Space& home, Single<View>& p);
88 public:
90 virtual Propagator* copy(Space& home);
92 virtual PropCost cost(const Space&, const ModEventDelta&) const;
94 virtual void reschedule(Space& home);
96 virtual size_t dispose(Space& home);
98 virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d);
100 virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
102 static ExecStatus post(Home home, ViewArray<View>& x, int s, int t);
103 };
104
105}}}
106
108
109#endif
110
111// STATISTICS: int-prop
int p
Number of positive literals for node type.
struct Gecode::@603::NNF::@65::@67 a
For atomic nodes.
Base-class for advisors.
Definition core.hpp:1292
Council of advisors
Definition core.hpp:1241
Generic domain change information to be supplied to advisors.
Definition core.hpp:204
Home class for posting propagators
Definition core.hpp:856
Advisors for views (by position in array)
Definition precede.hh:65
Index(Space &home, Propagator &p, Council< Index > &c, int i)
Create index advisor.
Definition single.hpp:49
int i
The position of the view in the view array.
Definition precede.hh:68
Single value precedence propagator.
Definition precede.hh:61
virtual ExecStatus advise(Space &home, Advisor &a, const Delta &d)
Give advice to propagator.
Definition single.hpp:183
int s
The value s must precede t.
Definition precede.hh:77
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition single.hpp:211
ExecStatus updateAlpha(Space &home)
Update the alpha pointer.
Definition single.hpp:61
virtual Propagator * copy(Space &home)
Copy propagator during cloning.
Definition single.hpp:136
Council< Index > c
The advisor council.
Definition precede.hh:75
virtual void reschedule(Space &home)
Schedule function.
Definition single.hpp:177
Single(Home home, ViewArray< View > &x, int s, int t, int beta, int gamma)
Constructor for posting.
Definition single.hpp:84
int alpha
Pointers updated during propagation.
Definition precede.hh:79
ExecStatus updateBeta(Space &home)
Update the beta pointer.
Definition single.hpp:72
virtual size_t dispose(Space &home)
Delete propagator and return its size.
Definition single.hpp:160
virtual PropCost cost(const Space &, const ModEventDelta &) const
Cost function.
Definition single.hpp:171
static ExecStatus post(Home home, ViewArray< View > &x, int s, int t)
Post propagator that s precedes t in x.
Definition single.hpp:96
n-ary propagator
Definition pattern.hpp:142
Propagation cost.
Definition core.hpp:486
Base-class for propagators.
Definition core.hpp:1064
ModEventDelta med
A set of modification events (used during propagation)
Definition core.hpp:1075
Computation spaces.
Definition core.hpp:1742
View arrays.
Definition array.hpp:253
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
const Gecode::PropCond PC_INT_NONE
Propagation condition to be ignored (convenience)
Definition var-type.hpp:74
Gecode toplevel namespace
ExecStatus
Definition core.hpp:472