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option.hh
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4  * Guido Tack <tack@gecode.org>
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7  * Guido Tack, 2007
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10  * $Date: 2014-08-07 05:31:59 +0200 (Thu, 07 Aug 2014) $ by $Author: tack $
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37 
38 #ifndef __FLATZINC_OPTION_HH__
39 #define __FLATZINC_OPTION_HH__
40 
41 namespace Gecode { namespace FlatZinc {
42 
44  template<class Val>
45  struct Option {
46  private:
47  bool _some;
48  Val _v;
49  public:
50  bool operator()(void) const { return _some; }
51  const Val& some(void) const { return _v; }
52  Val& some(void) { return _v; }
53  static Option<Val> none(void) {
54  Option<Val> o;
55  o._some = false;
56  new (&o._v) Val();
57  return o;
58  }
59  static Option<Val> some(const Val& v) {
60  Option<Val> o;
61  o._some = true;
62  o._v = v;
63  return o;
64  }
65  };
66 
67 }}
68 
69 #endif
70 
71 // STATISTICS: flatzinc-any
Optional value.
Definition: option.hh:45
const Val & some(void) const
Definition: option.hh:51
bool operator()(void) const
Definition: option.hh:50
static Option< Val > none(void)
Definition: option.hh:53
Val & some(void)
Definition: option.hh:52
const int v[7]
Definition: distinct.cpp:207
static Option< Val > some(const Val &v)
Definition: option.hh:59
Gecode toplevel namespace