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seq-u.hpp
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1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Guido Tack <tack@gecode.org>
5 * Christian Schulte <schulte@gecode.org>
6 *
7 * Contributing authors:
8 * Gabor Szokoli <szokoli@gecode.org>
9 *
10 * Copyright:
11 * Guido Tack, 2004
12 * Christian Schulte, 2004
13 * Gabor Szokoli, 2004
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
40namespace Gecode { namespace Set { namespace Sequence {
41
42 /*
43 * "Sequenced union" propagator
44 *
45 */
46
50
54 unionOfDets.update(home, p.unionOfDets);
55 }
56
59 switch (x.size()) {
60 case 0:
61 GECODE_ME_CHECK(y.cardMax(home, 0));
62 return ES_OK;
63 case 1:
64 return Rel::Eq<SetView,SetView>::post(home, x[0], y);
65 default:
66 if (shared(x) || shared(x,y))
67 return ES_FAILED;
68 (void) new (home) SeqU(home,x,y);
69 return ES_OK;
70 }
71 }
72
73}}}
74
75// STATISTICS: set-prop
Home class for posting propagators
Definition core.hpp:856
NaryOnePropagator(Space &home, NaryOnePropagator &p)
friend class Space
Definition core.hpp:1068
static ExecStatus post(Home home, View0 x, View1 y)
Post propagator .
Definition eq.hpp:54
static ExecStatus post(Home home, ViewArray< SetView >, SetView)
Post propagator and .
Definition seq-u.hpp:58
SeqU(Space &home, SeqU &p)
Constructor for cloning p.
Definition seq-u.hpp:52
Set view for set variables
Definition view.hpp:56
View arrays.
Definition array.hpp:253
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition macros.hpp:52
Propagators for ordered sequences of sets.
Definition sequence.hh:45
Finite integer sets.
Definition var-imp.hpp:137
const Gecode::PropCond PC_SET_ANY
Propagate when any bound or the cardinality of a view changes.
Definition var-type.hpp:248
Gecode toplevel namespace
ExecStatus
Definition core.hpp:472
@ ES_OK
Execution is okay.
Definition core.hpp:476
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
bool shared(ViewArray< ViewX > x, ViewArray< ViewY > y)
Definition array.hpp:1472
#define forceinline
Definition config.hpp:194