eliminate_metric.hh

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#pragma once

#include "Algorithm.hh"

namespace cadabra {

class eliminate_converter : public Algorithm {
    public:
        eliminate_converter(const Kernel&, Ex&, Ex&);

        virtual bool     can_apply(iterator) override;
        virtual result_t apply(iterator&) override;

    protected:
        virtual bool is_conversion_object(iterator) const=0; 

    private:
        Ex          preferred;
        index_map_t ind_dummy, ind_free;
        bool handle_one_index(iterator, iterator, iterator, sibling_iterator);
};


class eliminate_metric : public eliminate_converter {
    public:
        eliminate_metric(const Kernel&, Ex&, Ex&);
        
    protected:
        virtual bool is_conversion_object(iterator) const override; 
};

}