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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, 2003
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 Search {
35
36 /// Create depth-first engine
37 GECODE_SEARCH_EXPORT Engine*
38 dfsengine(Space* s, const Options& o);
39
40 /// A DFS engine builder
41 template<class T>
42 class DfsBuilder : public Builder {
43 using Builder::opt;
44 public:
45 /// The constructor
46 DfsBuilder(const Options& opt);
47 /// The actual build function
48 virtual Engine* operator() (Space* s) const;
49 };
50
51 template<class T>
52 inline
53 DfsBuilder<T>::DfsBuilder(const Options& opt)
54 : Builder(opt,DFS<T>::best) {}
55
56 template<class T>
57 Engine*
58 DfsBuilder<T>::operator() (Space* s) const {
59 return build<T,DFS>(s,opt);
60 }
61
62}}
63
64namespace Gecode {
65
66 template<class T>
67 inline
68 DFS<T>::DFS(T* s, const Search::Options& o)
69 : Search::Base<T>(Search::dfsengine(s,o)) {}
70
71 template<class T>
72 inline T*
73 dfs(T* s, const Search::Options& o) {
74 DFS<T> d(s,o);
75 return d.next();
76 }
77
78 template<class T>
79 SEB
80 dfs(const Search::Options& o) {
81 return new Search::DfsBuilder<T>(o);
82 }
83
84}
85
86// STATISTICS: search-other