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when.cpp
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7  * Christian Schulte, 2009
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33 
34 #include <gecode/int/exec.hh>
35 
36 namespace Gecode { namespace Int { namespace Exec {
37 
38  Actor*
39  When::copy(Space& home) {
40  return new (home) When(home,*this);
41  }
42 
45  if (x0.zero()) {
47  e()(home);
48  } else {
49  assert(x0.one());
51  t()(home);
52  }
53  if (home.failed())
54  return ES_FAILED;
55  return home.ES_SUBSUMED(*this);
56  }
57 
58  size_t
60  home.ignore(*this,AP_DISPOSE);
61  t.~SharedData<std::function<void(Space& home)>>();
62  e.~SharedData<std::function<void(Space& home)>>();
64  return sizeof(*this);
65  }
66 
67 }}}
68 
69 // STATISTICS: int-prop
70 
bool zero(void) const
Test whether view is assigned to be zero.
Definition: bool.hpp:220
When(Space &home, When &p)
Constructor for cloning p.
Definition: when.hpp:45
ExecStatus ES_SUBSUMED(Propagator &p)
Definition: core.hpp:3563
bool one(void) const
Test whether view is assigned to be one.
Definition: bool.hpp:224
SharedData< std::function< void(Space &home)> > t
Then function.
Definition: exec.hh:56
Computation spaces.
Definition: core.hpp:1742
Base-class for both propagators and branchers.
Definition: core.hpp:628
#define GECODE_VALID_FUNCTION(f)
Assert that a function is valid.
Definition: macros.hpp:94
Gecode toplevel namespace
virtual size_t dispose(Space &home)
Dispose propagator.
Definition: when.cpp:59
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition: when.cpp:39
@ AP_DISPOSE
Actor must always be disposed.
Definition: core.hpp:562
SharedData< std::function< void(Space &home)> > e
Else function pointer.
Definition: exec.hh:58
bool failed(void) const
Check whether space is failed.
Definition: core.hpp:4044
Unary propagator.
Definition: pattern.hpp:55
void ignore(Actor &a, ActorProperty p, bool duplicate=false)
Ignore actor property.
Definition: core.hpp:4074
@ ES_FAILED
Execution has resulted in failure.
Definition: core.hpp:474
int ModEventDelta
Modification event deltas.
Definition: core.hpp:89
BoolView x0
Single view.
Definition: pattern.hpp:58
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition: when.cpp:44
ExecStatus
Definition: core.hpp:472