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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, 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 Exec {
35
36 forceinline
37 When::When(Home home, BoolView x,
38 std::function<void(Space& home)> t0,
39 std::function<void(Space& home)> e0)
40 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,x), t(t0), e(e0) {
41 home.notice(*this,AP_DISPOSE);
42 }
43
44 forceinline
45 When::When(Space& home, When& p)
46 : UnaryPropagator<BoolView,PC_BOOL_VAL>(home,p), t(p.t), e(p.e) {
47 }
48
49 forceinline ExecStatus
50 When::post(Home home, BoolView x,
51 std::function<void(Space& home)> t,
52 std::function<void(Space& home)> e) {
53 if (!t)
54 throw InvalidFunction("When::When");
55 if (!e)
56 throw InvalidFunction("When::When");
57 if (x.zero()) {
58 e(home);
59 return home.failed() ? ES_FAILED : ES_OK;
60 } else if (x.one()) {
61 t(home);
62 return home.failed() ? ES_FAILED : ES_OK;
63 } else {
64 (void) new (home) When(home,x,t,e);
65 return ES_OK;
66 }
67 }
68
69}}}
70
71// STATISTICS: int-prop
72