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values-singleton.hpp
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4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2007
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33 
34 namespace Gecode { namespace Iter { namespace Values {
35 
42  class Singleton {
43  protected:
45  bool done;
47  int v;
48  public:
50 
51  Singleton(void);
54  Singleton(int v);
56  void init(int v);
58 
60 
61  bool operator ()(void) const;
64  void operator ++(void);
66 
68 
69  int val(void) const;
72  };
73 
74 
77 
80  : done(false), v(v0) {}
81 
82  forceinline void
83  Singleton::init(int v0) {
84  done=false; v=v0;
85  }
86 
87  forceinline void
89  done=true;
90  }
91  forceinline bool
92  Singleton::operator ()(void) const {
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.
void operator++(void)
Move iterator to next value (if possible)
#define forceinline
Definition: config.hpp:185
bool operator()(void) const
Test whether iterator is still at a value or done.
int val(void) const
Return current value.
void init(int v)
Initialize with value v.
Singleton(void)
Default constructor.
Gecode toplevel namespace