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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
16 * development environment:
17 * http://www.gecode.org
18 *
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39
40#ifndef __GECODE_SET_PRECEDE_HH__
41#define __GECODE_SET_PRECEDE_HH__
42
43#include <gecode/set.hh>
44
50namespace 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;
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
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
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
Advisors for views (by position in array)
Definition precede.hh:67
Index(Space &home, Propagator &p, Council< Index > &c, int i)
Create index advisor.
Definition single.hpp:44
int i
The position of the view in the view array.
Definition precede.hh:70
Single value precedence propagator.
Definition precede.hh:63
int alpha
Pointers updated during propagation.
Definition precede.hh:81
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition single.hpp:222
virtual size_t dispose(Space &home)
Delete propagator and return its size.
Definition single.hpp:174
virtual Propagator * copy(Space &home)
Copy propagator during cloning.
Definition single.hpp:150
ExecStatus updateBeta(Space &home)
Update the beta pointer.
Definition single.hpp:73
virtual ExecStatus advise(Space &home, Advisor &a, const Delta &d)
Give advice to propagator.
Definition single.hpp:197
static ExecStatus post(Home home, ViewArray< View > &x, int s, int t)
Post propagator that s precedes t in x.
Definition single.hpp:100
Council< Index > c
The advisor council.
Definition precede.hh:77
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
Single(Home home, ViewArray< View > &x, int s, int t, int beta, int gamma)
Constructor for posting.
Definition single.hpp:88
virtual void reschedule(Space &home)
Schedule function.
Definition single.hpp:191
ExecStatus updateAlpha(Space &home)
Update the alpha pointer.
Definition single.hpp:56
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_SET_NONE
Propagation condition to be ignored (convenience)
Definition var-type.hpp:199
Gecode toplevel namespace
ExecStatus
Definition core.hpp:472