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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Copyright:
7 * Christian Schulte, 2006
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
33
34#include <gecode/int.hh>
35
36namespace Gecode { namespace Int {
37
38 BoolVarImp BoolVarImp::s_one(1);
39 BoolVarImp BoolVarImp::s_zero(0);
40
41 ModEvent
42 BoolVarImp::one_none(Space& home) {
43 assert(none());
44 bits() ^= (NONE ^ ONE);
45 assert(one());
46 IntDelta d(0);
47 return notify(home,ME_BOOL_VAL,d);
48 }
49
50 ModEvent
51 BoolVarImp::zero_none(Space& home) {
52 assert(none());
53 bits() ^= (NONE ^ ZERO);
54 assert(zero());
55 IntDelta d(1);
56 return notify(home,ME_BOOL_VAL,d);
57 }
58
59 void
60 BoolVarImp::subscribe(Space& home, Propagator& p, PropCond,
61 bool schedule) {
62 // Subscription can be used with integer propagation conditions,
63 // which must be remapped to the single Boolean propagation condition.
64 BoolVarImpBase::subscribe(home,p,PC_BOOL_VAL,assigned(),schedule);
65 }
66
67 void
68 BoolVarImp::reschedule(Space& home, Propagator& p, PropCond) {
69 BoolVarImpBase::reschedule(home,p,PC_BOOL_VAL,assigned());
70 }
71
72 void
73 BoolVarImp::subscribe(Space& home, Advisor& a, bool fail) {
74 BoolVarImpBase::subscribe(home,a,assigned(),fail);
75 }
76
77}}
78
79// STATISTICS: int-var