Generated on Sat Jan 12 2019 20:58:51 for Gecode by doxygen 1.8.13
ranges-empty.hpp
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, 2004
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 namespace Gecode { namespace Iter { namespace Ranges {
35 
42  class Empty {
43  public:
45 
46  Empty(void);
49  void init(void);
51 
53 
54  bool operator ()(void) const;
57  void operator ++(void);
59 
61 
62  int min(void) const;
65  int max(void) const;
67  unsigned int width(void) const;
69  };
70 
71 
73  Empty::Empty(void) {}
74 
75  forceinline void
76  Empty::init(void) {}
77 
78  forceinline void
81  }
82 
83  forceinline bool
84  Empty::operator ()(void) const {
85  return false;
86  }
87 
88  forceinline int
89  Empty::min(void) const {
91  return 0;
92  }
93  forceinline int
94  Empty::max(void) const {
96  return 0;
97  }
98  forceinline unsigned int
99  Empty::width(void) const {
100  GECODE_NEVER;
101  return 0;
102  }
103 
104 }}}
105 
106 // STATISTICS: iter-any
107 
unsigned int width(void) const
Return width of range (distance between minimum and maximum)
void operator++(void)
Move iterator to next range (if possible)
#define forceinline
Definition: config.hpp:185
int max(void) const
Return largest value of range.
Empty(void)
Default constructor.
bool operator()(void) const
Test whether iterator is still at a range or done.
Gecode toplevel namespace
Range iterator for empty range.
int min(void) const
Return smallest value of range.
void init(void)
Initialize.
#define GECODE_NEVER
Assert that this command is never executed.
Definition: macros.hpp:56