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spec.hpp
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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, 2004
8  *
9  * Last modified:
10  * $Date: 2012-02-22 16:04:20 +1100 (Wed, 22 Feb 2012) $ by $Author: tack $
11  * $Revision: 12537 $
12  *
13  * This file is part of Gecode, the generic constraint
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15  * http://www.gecode.org
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37 
38 namespace Gecode { namespace Int { namespace Dom {
39 
40  template<class View>
43  (Home home, View x, const IntSet& s, BoolView b)
45  home.notice(*this,AP_DISPOSE);
46  }
47 
48  template<class View>
49  forceinline size_t
51  home.ignore(*this,AP_DISPOSE);
52  is.~IntSet();
54  return sizeof(*this);
55  }
56 
57  template<class View>
59  ReIntSet<View>::post(Home home, View x, const IntSet& s, BoolView b) {
60  if (s.ranges() == 0) {
61  GECODE_ME_CHECK(b.zero(home));
62  } else if (s.ranges() == 1) {
63  return ReRange<View>::post(home,x,s.min(),s.max(),b);
64  } else if (b.one()) {
65  IntSetRanges i_is(s);
66  GECODE_ME_CHECK(x.inter_r(home,i_is,false));
67  } else if (b.zero()) {
68  IntSetRanges i_is(s);
69  GECODE_ME_CHECK(x.minus_r(home,i_is,false));
70  } else {
71  (void) new (home) ReIntSet<View>(home,x,s,b);
72  }
73  return ES_OK;
74  }
75 
76 
77  template<class View>
79  ReIntSet<View>::ReIntSet(Space& home, bool share, ReIntSet& p)
80  : ReUnaryPropagator<View,PC_INT_DOM,BoolView>(home,share,p) {
81  is.update(home,share,p.is);
82  }
83 
84  template<class View>
85  Actor*
86  ReIntSet<View>::copy(Space& home, bool share) {
87  return new (home) ReIntSet(home,share,*this);
88  }
89 
90  template<class View>
93  IntSetRanges i_is(is);
94  if (b.one()) {
95  GECODE_ME_CHECK(x0.inter_r(home,i_is,false));
96  return home.ES_SUBSUMED(*this);
97  }
98  if (b.zero()) {
99  GECODE_ME_CHECK(x0.minus_r(home,i_is,false));
100  return home.ES_SUBSUMED(*this);
101  }
102 
103  {
104  ViewRanges<View> i_x(x0);
105 
106  switch (Iter::Ranges::compare(i_x,i_is)) {
108  GECODE_ME_CHECK(b.one_none(home));
109  return home.ES_SUBSUMED(*this);
111  GECODE_ME_CHECK(b.zero_none(home));
112  return home.ES_SUBSUMED(*this);
114  break;
115  default: GECODE_NEVER;
116  }
117  }
118  return ES_FIX;
119  }
120 
121 }}}
122 
123 // STATISTICS: int-prop
124