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src/ell/NeighborGenerator.hh

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#ifndef NEIGHBORGENERATOR_HH_
#define NEIGHBORGENERATOR_HH_


#include "ell/State.hh"

namespace ell {
    class NeighborGenerator
    {
    public:
    
        virtual ~NeighborGenerator(){};

        virtual State::NeighborListPtr getNeighborList(const State* const s) const = 0;
    };
    
    class NG_Random : public NeighborGenerator
    {
    protected:
        
        class NeighborList : public State::NeighborList
        {
        protected:
            const State* const origin;
        public:
            NeighborList(const State* _origin);
            
            virtual ~NeighborList();

            virtual State* first(State::NeighborList::ItState** itstate) const;

            virtual State* next(    State::NeighborList::ItState* itstate, 
                                    State* elem) const;
        };

    public:

         State::NeighborListPtr getNeighborList(const State* const s) const;
    };
    
    class NG_SuccessiveRandom : public NeighborGenerator
    {
    public:

         State::NeighborListPtr getNeighborList(const State* const s) const;
    };

    class NG_Successive : public NeighborGenerator
    {
    public:

         State::NeighborListPtr getNeighborList(const State* const s) const;
    };
    
} // namespace ell

#endif /*NEIGHBORGENERATOR_HH_*/