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ranges-values.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, 2004
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
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33
34namespace Gecode { namespace Iter { namespace Ranges {
35
41 template<class I>
42 class ToValues {
43 protected:
45 I i;
47 int cur;
49 int max;
51 void start(void);
52 public:
54
55
56 ToValues(void);
58 ToValues(I& i);
60 void init(I& i);
62
64
65
66 bool operator ()(void) const;
68 void operator ++(void);
70
72
73
74 int val(void) const;
76 };
77
78
79
80 template<class I>
83
84 template<class I>
85 forceinline void
87 if (i()) {
88 cur = i.min(); max = i.max();
89 } else {
90 cur = 1; max = 0;
91 }
92 }
93
94 template<class I>
97 : i(i0) {
98 start();
99 }
100
101 template<class I>
102 forceinline void
104 i = i0;
105 start();
106 }
107
108
109 template<class I>
110 forceinline bool
112 return (cur <= max);
113 }
114
115 template<class I>
116 forceinline void
118 ++cur;
119 if (cur > max) {
120 ++i;
121 if (i()) {
122 cur = i.min(); max = i.max();
123 }
124 }
125 }
126
127 template<class I>
128 forceinline int
129 ToValues<I>::val(void) const {
130 return cur;
131 }
132
133}}}
134
135// STATISTICS: iter-any
136
int val(void) const
Return current value.
void start(void)
Initialize iterator.
void operator++(void)
Move iterator to next value (if possible)
bool operator()(void) const
Test whether iterator is still at a value or done.
void init(I &i)
Initialize with values from range iterator i.
ToValues(void)
Default constructor.
int max
End of current range.
Range iterators.
Definition iter.hh:43
Range and value iterators.
Definition iter.hh:41
Gecode toplevel namespace
#define forceinline
Definition config.hpp:194