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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Mikael Lagerkvist <lagerkvist@gecode.org>
5 * Christian Schulte <schulte@gecode.org>
6 *
7 * Copyright:
8 * Mikael Lagerkvist, 2006
9 * Christian Schulte, 2007
10 *
11 * This file is part of Gecode, the generic constraint
12 * development environment:
13 * http://www.gecode.org
14 *
15 * Permission is hereby granted, free of charge, to any person obtaining
16 * a copy of this software and associated documentation files (the
17 * "Software"), to deal in the Software without restriction, including
18 * without limitation the rights to use, copy, modify, merge, publish,
19 * distribute, sublicense, and/or sell copies of the Software, and to
20 * permit persons to whom the Software is furnished to do so, subject to
21 * the following conditions:
22 *
23 * The above copyright notice and this permission notice shall be
24 * included in all copies or substantial portions of the Software.
25 *
26 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
27 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
28 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
29 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
30 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
31 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
32 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
33 *
34 */
35
36namespace Gecode {
37
38 /**
39 * \brief %Advisor storing a single view
40 *
41 */
42 template<class View>
43 class ViewAdvisor : public Advisor {
44 protected:
45 /// The single view
46 View x;
47 public:
48 /// Constructor for creation
49 template<class A>
50 ViewAdvisor(Space& home, Propagator& p, Council<A>& c, View x0);
51 /// Constructor for cloning \a a
52 ViewAdvisor(Space& home, ViewAdvisor<View>& a);
53 /// Access view
54 View view(void) const;
55 /// Replace view (also replaces subscription to view)
56 void view(Space& home, View y);
57 /// Delete advisor
58 template<class A>
59 void dispose(Space& home, Council<A>& c);
60 };
61
62
63 template<class View>
64 template<class A>
65 forceinline
66 ViewAdvisor<View>::ViewAdvisor(Space& home, Propagator& p,
67 Council<A>& c, View x0)
68 : Advisor(home,p,c), x(x0) {
69 x.subscribe(home,*this);
70 }
71 template<class View>
72 forceinline
73 ViewAdvisor<View>::ViewAdvisor(Space& home, ViewAdvisor<View>& a)
74 : Advisor(home,a) {
75 x.update(home,a.x);
76 }
77 template<class View>
78 forceinline View
79 ViewAdvisor<View>::view(void) const {
80 return x;
81 }
82 template<class View>
83 forceinline void
84 ViewAdvisor<View>::view(Space& home, View y) {
85 x.cancel(home,*this); x=y; x.subscribe(home,*this);
86 }
87 template<class View>
88 template<class A>
89 forceinline void
90 ViewAdvisor<View>::dispose(Space& home, Council<A>& c) {
91 x.cancel(home,*this);
92 Advisor::dispose(home,c);
93 }
94
95}
96
97// STATISTICS: kernel-other