Generated on Tue Feb 11 2025 17:33:26 for Gecode by doxygen 1.12.0
dfs.hh
Go to the documentation of this file.
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
34#ifndef __GECODE_SEARCH_SEQ_DFS_HH__
35#define __GECODE_SEARCH_SEQ_DFS_HH__
36
37#include <gecode/search.hh>
41
42namespace Gecode { namespace Search { namespace Seq {
43
45 template<class Tracer>
46 class DFS : public Worker {
47 private:
49 Tracer tracer;
51 Options opt;
53 Path<Tracer> path;
55 Space* cur;
57 unsigned int d;
58 public:
60 DFS(Space* s, const Options& o);
62 Space* next(void);
64 Statistics statistics(void) const;
66 void constrain(const Space& b);
68 void reset(Space* s);
70 NoGoods& nogoods(void);
72 ~DFS(void);
73 };
74
75}}}
76
78
79#endif
80
81// STATISTICS: search-seq
struct Gecode::@603::NNF::@65::@66 b
For binary nodes (and, or, eqv)
No-goods recorded from restarts.
Definition core.hpp:1588
Search engine options
Definition search.hh:746
Depth-first search engine implementation.
Definition dfs.hh:46
Space * next(void)
Search for next solution
Definition dfs.hpp:78
Statistics statistics(void) const
Return statistics.
Definition dfs.hpp:164
~DFS(void)
Destructor.
Definition dfs.hpp:177
NoGoods & nogoods(void)
Return no-goods.
Definition dfs.hpp:72
void constrain(const Space &b)
Constrain future solutions to be better than b (should never be called)
Definition dfs.hpp:170
DFS(Space *s, const Options &o)
Initialize for space s with options o.
Definition dfs.hpp:38
Depth-first path (stack of edges) supporting recomputation.
Definition path.hh:60
Search engine statistics
Definition search.hh:147
Search worker statistics
Definition worker.hh:44
Computation spaces.
Definition core.hpp:1742
Gecode toplevel namespace