this repo has no description
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, 2009
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 Int { namespace Unary {
35
36 // Overload checking for mandatory tasks
37 template<class ManTask>
38 ExecStatus
39 overload(TaskArray<ManTask>& t) {
40 TaskViewArray<typename TaskTraits<ManTask>::TaskViewFwd> f(t);
41 sort<typename TaskTraits<ManTask>::TaskViewFwd,STO_LCT,true>(f);
42
43 Region r;
44 OmegaTree<typename TaskTraits<ManTask>::TaskViewFwd> o(r,f);
45
46 for (int i=0; i<f.size(); i++) {
47 o.insert(i);
48 if (o.ect() > f[i].lct())
49 return ES_FAILED;
50 }
51 return ES_OK;
52 }
53
54 // Overload checking for optional tasks
55 template<class OptTask, class PL>
56 ExecStatus
57 overload(Space& home, Propagator& p, TaskArray<OptTask>& t) {
58 TaskViewArray<typename TaskTraits<OptTask>::TaskViewFwd> f(t);
59 sort<typename TaskTraits<OptTask>::TaskViewFwd,STO_LCT,true>(f);
60
61 Region r;
62 OmegaLambdaTree<typename TaskTraits<OptTask>::TaskViewFwd> ol(r,f,false);
63
64 bool to_purge = false;
65
66 for (int i=0; i<f.size(); i++) {
67 if (f[i].optional()) {
68 ol.linsert(i);
69 } else if (f[i].mandatory()) {
70 ol.oinsert(i);
71 if (ol.ect() > f[i].lct())
72 return ES_FAILED;
73 }
74 while (!ol.lempty() && (ol.lect() > f[i].lct())) {
75 int j = ol.responsible();
76 GECODE_ME_CHECK(f[j].excluded(home));
77 ol.lremove(j);
78 to_purge = true;
79 }
80 }
81
82 if (to_purge)
83 GECODE_ES_CHECK((purge<OptTask,PL>(home,p,t)));
84 return ES_OK;
85 }
86
87}}}
88
89// STATISTICS: int-prop