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#ifndef GECODE_INT_PRECEDE_HH#define GECODE_INT_PRECEDE_HH
#include <gecode/int.hh>
/** * \namespace Gecode::Int::Precede * \brief Value precedence propagators */
namespace Gecode { namespace Int { namespace Precede {
/** * \brief Single value precedence propagator * * The propagator is based on: Yat Chiu Law and Jimmy H.M. Lee, * Global Constraints for Integer and Set Value Precedence, * CP 2004, 362--376. * * Requires \code #include <gecode/int/precede.hh> \endcode * \ingroup FuncIntProp */ template<class View> class Single : public NaryPropagator<View,PC_INT_NONE> { protected: using NaryPropagator<View,PC_INT_NONE>::x; /// %Advisors for views (by position in array) class Index : public Advisor { public: /// The position of the view in the view array int i; /// Create index advisor Index(Space& home, Propagator& p, Council<Index>& c, int i); /// Clone index advisor \a a Index(Space& home, Index& a); }; /// The advisor council Council<Index> c; /// The value \a s must precede \a t int s, t; /// Pointers updated during propagation int alpha, beta, gamma; /// Update the alpha pointer ExecStatus updateAlpha(Space& home); /// Update the beta pointer ExecStatus updateBeta(Space& home); /// Constructor for posting Single(Home home, ViewArray<View>& x, int s, int t, int beta, int gamma); /// Constructor for cloning \a p Single(Space& home, Single<View>& p); public: /// Copy propagator during cloning virtual Propagator* copy(Space& home); /// Cost function virtual PropCost cost(const Space&, const ModEventDelta&) const; /// Schedule function virtual void reschedule(Space& home); /// Delete propagator and return its size virtual size_t dispose(Space& home); /// Give advice to propagator virtual ExecStatus advise(Space& home, Advisor& a, const Delta& d); /// Perform propagation virtual ExecStatus propagate(Space& home, const ModEventDelta& med); /// Post propagator that \a s precedes \a t in \a x static ExecStatus post(Home home, ViewArray<View>& x, int s, int t); };
}}}
#include <gecode/int/precede/single.hpp>
#endif
// STATISTICS: int-prop