1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  *  Main authors:
4  *     Guido Tack <tack@gecode.org>
5  *
6  *  Copyright:
7  *     Guido Tack, 2006
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 #include <gecode/kernel.hh>
35 #include <gecode/gist.hh>
36 
37 namespace Gecode { namespace Gist {
38 
39   /// %Choice for %StopBrancher
40   class GECODE_GIST_EXPORT StopChoice : public Choice {
41   public:
42     /// Initialize choice for brancher \a b
43     StopChoice(const Brancher& b);
44     /// Archive into \a e
45     virtual void archive(Archive& e) const;
46   };
47 
48   /// %Brancher that stops exploration in %Gist
49   class StopBrancher : public Brancher {
50   protected:
51     /// Flag whether brancher has been executed
52     bool done;
53     /// Construct brancher
54     StopBrancher(Home home);
55     /// Copy constructor
56     StopBrancher(Space& home, StopBrancher& b);
57   public:
58     /// Check status of brancher, return true if alternatives left
59     virtual bool status(const Space&) const;
60     /// Return choice
61     virtual Choice* choice(Space&);
62     /// Return choice
63     virtual Choice* choice(const Space& home, Archive&);
64     /// Perform commit for choice \a _c and alternative \a a
65     virtual ExecStatus commit(Space&, const Choice&, unsigned int);
66     /// Print explanation
67     virtual void print(const Space& home, const Gecode::Choice& c,
68                        unsigned int,
69                        std::ostream& o) const;
70     /// Copy brancher
71     virtual Actor* copy(Space& home);
72     /// Post brancher
73     static void post(Home home);
74     /// Delete brancher and return its size
75     virtual size_t dispose(Space&);
76   };
77 
78 }}
79 
80 // STATISTICS: gist-any
81