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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, 2016
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
34namespace Gecode { namespace Set {
35
36 /// Duplicate of a set view
37 class SetTraceView {
38 protected:
39 /// Copy of the greatest lower bound
40 RangeList* _glb;
41 /// Copy of the least upper bound
42 RangeList* _lub;
43 public:
44 /// Default constructor (initializes with no view)
45 SetTraceView(void);
46 /// Duplicate view \a x
47 SetTraceView(Space& home, SetView x);
48 /// Return range list for greatest lower bound
49 RangeList* glb(void) const;
50 /// Return range list for leat upper bound
51 RangeList* lub(void) const;
52 /// Update duplicated view from view \a y and delta \a d
53 void prune(Space& home, SetView y, const Delta& d);
54 /// Update during cloning
55 void update(Space& home, SetTraceView x);
56 /// Return slack for \a x
57 static unsigned long long int slack(SetView x);
58 };
59
60 forceinline
61 SetTraceView::SetTraceView(void) {}
62 forceinline
63 SetTraceView::SetTraceView(Space& home, SetView x) {
64 GlbRanges<SetView> glbi(x);
65 RangeList::copy(home,_glb,glbi);
66 LubRanges<SetView> lubi(x);
67 RangeList::copy(home,_lub,lubi);
68 }
69 forceinline RangeList*
70 SetTraceView::glb(void) const {
71 return _glb;
72 }
73 forceinline RangeList*
74 SetTraceView::lub(void) const {
75 return _lub;
76 }
77 forceinline void
78 SetTraceView::prune(Space& home, SetView x, const Delta&) {
79 GlbRanges<SetView> glbi(x);
80 RangeList::overwrite(home,_glb,glbi);
81 LubRanges<SetView> lubi(x);
82 RangeList::overwrite(home,_lub,lubi);
83 }
84 forceinline void
85 SetTraceView::update(Space& home, SetTraceView x) {
86 Iter::Ranges::RangeList glbi(x._glb);
87 RangeList::copy(home,_glb,glbi);
88 Iter::Ranges::RangeList lubi(x._lub);
89 RangeList::copy(home,_lub,lubi);
90 }
91
92 forceinline unsigned long long int
93 SetTraceView::slack(SetView x) {
94 return x.unknownSize();
95 }
96
97}}
98
99// STATISTICS: set-trace