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00038 namespace Gecode { namespace Int { namespace Count {
00039
00040 template<class VX, class VY, class VZ>
00041 forceinline
00042 ViewBase<VX,VY,VZ>::ViewBase(Home home,
00043 ViewArray<VX>& x0, VY y0, VZ z0, int c0)
00044 : Propagator(home), x(x0), y(y0), z(z0), c(c0) {
00045 if (isintset(y))
00046 home.notice(*this,AP_DISPOSE);
00047 x.subscribe(home,*this,PC_INT_DOM);
00048 subscribe(home,*this,y);
00049 z.subscribe(home,*this,PC_INT_BND);
00050 }
00051
00052 template<class VX, class VY, class VZ>
00053 forceinline
00054 ViewBase<VX,VY,VZ>::ViewBase(Space& home, bool share, ViewBase<VX,VY,VZ>& p)
00055 : Propagator(home,share,p), c(p.c) {
00056 x.update(home,share,p.x);
00057 y.update(home,share,p.y);
00058 z.update(home,share,p.z);
00059 }
00060
00061 template<class VX, class VY, class VZ>
00062 PropCost
00063 ViewBase<VX,VY,VZ>::cost(const Space&, const ModEventDelta&) const {
00064 return PropCost::linear(PropCost::LO,x.size()+1);
00065 }
00066
00067 template<class VX, class VY, class VZ>
00068 void
00069 ViewBase<VX,VY,VZ>::reschedule(Space& home) {
00070 x.reschedule(home,*this,PC_INT_DOM);
00071 Gecode::Int::Count::reschedule(home,*this,y);
00072 z.reschedule(home,*this,PC_INT_BND);
00073 }
00074
00075 template<class VX, class VY, class VZ>
00076 forceinline size_t
00077 ViewBase<VX,VY,VZ>::dispose(Space& home) {
00078 if (isintset(y))
00079 home.ignore(*this,AP_DISPOSE);
00080 x.cancel(home,*this,PC_INT_DOM);
00081 cancel(home,*this,y);
00082 z.cancel(home,*this,PC_INT_BND);
00083 (void) Propagator::dispose(home);
00084 return sizeof(*this);
00085 }
00086
00087 template<class VX, class VY, class VZ>
00088 forceinline void
00089 ViewBase<VX,VY,VZ>::count(Space& home) {
00090 int n = x.size();
00091 for (int i=n; i--; )
00092 switch (holds(x[i],y)) {
00093 case RT_FALSE:
00094 x[i].cancel(home,*this,PC_INT_DOM); x[i]=x[--n];
00095 break;
00096 case RT_TRUE:
00097 x[i].cancel(home,*this,PC_INT_DOM); x[i]=x[--n];
00098 c--;
00099 break;
00100 case RT_MAYBE:
00101 break;
00102 default:
00103 GECODE_NEVER;
00104 }
00105 x.size(n);
00106 }
00107
00108 template<class VX, class VY, class VZ>
00109 forceinline int
00110 ViewBase<VX,VY,VZ>::atleast(void) const {
00111 return -c;
00112 }
00113
00114 template<class VX, class VY, class VZ>
00115 forceinline int
00116 ViewBase<VX,VY,VZ>::atmost(void) const {
00117 return x.size()-c;
00118 }
00119
00120 template<class VX>
00121 forceinline bool
00122 shared(const IntSet&, VX) {
00123 return false;
00124 }
00125 template<class VX, class VY, class VZ>
00126 forceinline bool
00127 ViewBase<VX,VY,VZ>::sharing(const ViewArray<VX>& x,
00128 const VY& y, const VZ& z) {
00129 if (shared(y,z))
00130 return true;
00131 for (int i = x.size(); i--; )
00132 if (shared(x[i],z))
00133 return true;
00134 return false;
00135 }
00136
00137 }}}
00138
00139