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values-inter.hpp
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4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2008
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10  * $Date: 2010-07-28 17:35:33 +0200 (Wed, 28 Jul 2010) $ by $Author: schulte $
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37 
38 namespace Gecode { namespace Iter { namespace Values {
39 
46  template<class I, class J>
47  class Inter {
48  protected:
50  I i;
52  J j;
54  void next(void);
55  public:
57 
58  Inter(void);
61  Inter(I& i, J& j);
63  void init(I& i, J& j);
65 
67 
68  bool operator ()(void) const;
71  void operator ++(void);
73 
75 
76  int val(void) const;
79  };
80 
81 
82  template<class I, class J>
85 
86  template<class I, class J>
87  forceinline void
89  do {
90  while (i() && j() && (i.val() < j.val()))
91  ++i;
92  while (i() && j() && (j.val() < i.val()))
93  ++j;
94  } while (i() && j() && (i.val() != j.val()));
95  }
96 
97  template<class I, class J>
98  inline void
99  Inter<I,J>::init(I& i0, J& j0) {
100  i=i0; j=j0; next();
101  }
102 
103  template<class I, class J>
105  Inter<I,J>::Inter(I& i0, J& j0) : i(i0), j(j0) {
106  next();
107  }
108 
109  template<class I, class J>
110  forceinline void
112  ++i; ++j; next();
113  }
114 
115  template<class I, class J>
116  forceinline bool
118  return i() && j();
119  }
120 
121  template<class I, class J>
122  forceinline int
123  Inter<I,J>::val(void) const {
124  assert(i.val() == j.val());
125  return i.val();
126  }
127 
128 }}}
129 
130 // STATISTICS: iter-any
void next(void)
Find next element from intersection.
void init(I &i, J &j)
Initialize with values from i and j.
int val(void) const
Return current value.
Gecode::IntArgs i(4, 1, 2, 3, 4)
void operator++(void)
Move iterator to next value (if possible)
Value iterator for the intersection of two value iterators.
#define forceinline
Definition: config.hpp:132
Gecode toplevel namespace
bool operator()(void) const
Test whether iterator is still at a value or done.
Inter(void)
Default constructor.