seq-u.cpp
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00040 #include <gecode/set/sequence.hh>
00041
00042 namespace Gecode { namespace Set { namespace Sequence {
00043
00044
00045
00046
00047
00048
00049 Actor*
00050 SeqU::copy(Space& home) {
00051 return new (home) SeqU(home,*this);
00052 }
00053
00054 ExecStatus
00055 SeqU::propagateSeqUnion(Space& home,
00056 bool& modified, ViewArray<SetView>& x,
00057 SetView& y) {
00058 Region r;
00059 GlbRanges<SetView>* XLBs = r.alloc<GlbRanges<SetView> >(x.size());
00060 for (int i=x.size(); i--; ) {
00061 GlbRanges<SetView> lb(x[i]);
00062 XLBs[i]=lb;
00063 }
00064 Iter::Ranges::NaryAppend<GlbRanges<SetView> > u(XLBs,x.size());
00065 GECODE_ME_CHECK_MODIFIED(modified, y.includeI(home,u));
00066
00067 GLBndSet before(home);
00068 for (int i=0; i<x.size(); i++) {
00069 LubRanges<SetView> xiub(x[i]);
00070 before.includeI(home, xiub);
00071 BndSetRanges beforeR(before);
00072 GlbRanges<SetView> ylb(y);
00073 Iter::Ranges::Diff<GlbRanges<SetView>, BndSetRanges> diff(ylb, beforeR);
00074 if (diff()) {
00075 GECODE_ME_CHECK_MODIFIED(modified, x[i].exclude(home, diff.min(),
00076 Limits::max));
00077 }
00078 }
00079 before.dispose(home);
00080
00081 GLBndSet after(home);
00082 for (int i=x.size(); i--; ) {
00083 LubRanges<SetView> xiub(x[i]);
00084 after.includeI(home, xiub);
00085 BndSetRanges afterR(after);
00086 GlbRanges<SetView> ylb(y);
00087 Iter::Ranges::Diff<GlbRanges<SetView>, BndSetRanges> diff(ylb, afterR);
00088 if (diff()) {
00089 int max = diff.max();
00090 for (; diff(); ++diff)
00091 max = diff.max();
00092 GECODE_ME_CHECK_MODIFIED(modified, x[i].exclude(home,
00093 Limits::min,
00094 max));
00095 }
00096 }
00097 after.dispose(home);
00098
00099 return ES_FIX;
00100 }
00101
00102
00103 ExecStatus
00104 SeqU::propagate(Space& home, const ModEventDelta& med) {
00105 ModEvent me0 = SetView::me(med);
00106 bool ubevent = Rel::testSetEventUB(me0);
00107 bool anybevent = Rel::testSetEventAnyB(me0);
00108 bool cardevent = Rel::testSetEventCard(me0);
00109
00110 bool modified = false;
00111 bool assigned=false;
00112 bool oldModified = false;
00113
00114 do {
00115 oldModified = modified;
00116 modified = false;
00117
00118 if (oldModified || modified || anybevent || cardevent)
00119 GECODE_ES_CHECK(propagateSeq(home,modified,assigned,x));
00120 if (oldModified || modified || anybevent)
00121 GECODE_ES_CHECK(propagateSeqUnion(home,modified,x,y));
00122 if (oldModified || modified || ubevent)
00123 GECODE_ES_CHECK(RelOp::unionNXiUB(home,modified,x,y,unionOfDets));
00124 if (oldModified || modified || ubevent)
00125 GECODE_ES_CHECK(RelOp::partitionNYUB(home,modified,x,y,unionOfDets));
00126 if (oldModified || modified || anybevent)
00127 GECODE_ES_CHECK(RelOp::partitionNXiLB(home,modified,x,y,unionOfDets));
00128 if (oldModified || modified || cardevent || ubevent)
00129 GECODE_ES_CHECK(RelOp::partitionNCard(home,modified,x,y,unionOfDets));
00130
00131 } while (modified);
00132
00133 for (int i=x.size(); i--;)
00134 if (!x[i].assigned())
00135 return ES_FIX;
00136 return home.ES_SUBSUMED(*this);
00137 }
00138
00139 }}}
00140
00141