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values-singleton.hpp
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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, 2007
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
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33
34namespace Gecode { namespace Iter { namespace Values {
35
42 class Singleton {
43 protected:
45 bool done;
47 int v;
48 public:
50
51
52 Singleton(void);
54 Singleton(int v);
56 void init(int v);
58
60
61
62 bool operator ()(void) const;
64 void operator ++(void);
66
68
69
70 int val(void) const;
72 };
73
74
77
80 : done(false), v(v0) {}
81
82 forceinline void
84 done=false; v=v0;
85 }
86
87 forceinline void
89 done=true;
90 }
91 forceinline bool
93 return !done;
94 }
95
96 forceinline int
97 Singleton::val(void) const {
98 return v;
99 }
100
101
102}}}
103
104// STATISTICS: iter-any
105
Value iterator for single value.
bool done
Whether the iterator is done.
int val(void) const
Return current value.
void init(int v)
Initialize with value v.
bool operator()(void) const
Test whether iterator is still at a value or done.
Singleton(void)
Default constructor.
void operator++(void)
Move iterator to next value (if possible)
Gecode toplevel namespace
#define forceinline
Definition config.hpp:187