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when.cpp
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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, 2009
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
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33
34#include <gecode/int/exec.hh>
35
36namespace Gecode { namespace Int { namespace Exec {
37
38 Actor*
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
bool one(void) const
Test whether view is assigned to be one.
Definition bool.hpp:224
virtual Actor * copy(Space &home)
Copy propagator during cloning.
Definition when.cpp:39
virtual ExecStatus propagate(Space &home, const ModEventDelta &med)
Perform propagation.
Definition when.cpp:44
SharedData< std::function< void(Space &home)> > t
Then function.
Definition exec.hh:56
When(Space &home, When &p)
Constructor for cloning p.
Definition when.hpp:45
virtual size_t dispose(Space &home)
Dispose propagator.
Definition when.cpp:59
SharedData< std::function< void(Space &home)> > e
Else function pointer.
Definition exec.hh:58
Computation spaces.
Definition core.hpp:1742
Unary propagator.
Definition pattern.hpp:55
ExecStatus ES_SUBSUMED(Propagator &p)
Definition core.hpp:3563
void ignore(Actor &a, ActorProperty p, bool duplicate=false)
Ignore actor property.
Definition core.hpp:4074
int ModEventDelta
Modification event deltas.
Definition core.hpp:89
bool failed(void) const
Check whether space is failed.
Definition core.hpp:4044
@ AP_DISPOSE
Actor must always be disposed.
Definition core.hpp:562
Gecode toplevel namespace
ExecStatus
Definition core.hpp:472
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
#define GECODE_VALID_FUNCTION(f)
Assert that a function is valid.
Definition macros.hpp:94