coord.hpp

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#include "teq/coord.hpp"

#ifndef ETEQ_COORD_HPP
#define ETEQ_COORD_HPP

namespace eteq
{

struct CoordMap final : public teq::iCoordMap
{
    CoordMap (teq::CoordT indices, bool bijective) :
        indices_(indices), bijective_(bijective) {}

    teq::iCoordMap* connect (const teq::iCoordMap& rhs) const override
    {
        return nullptr;
    }

    void forward (teq::CoordT::iterator out,
        teq::CoordT::const_iterator in) const override
    {
        std::copy(indices_.begin(), indices_.end(), out);
    }

    iCoordMap* reverse (void) const override
    {
        return nullptr;
    }

    std::string to_string (void) const override
    {
        return fmts::to_string(indices_.begin(), indices_.end());
    }

    void access (std::function<void(const teq::MatrixT&)> cb) const override {}

    bool is_bijective (void) const override
    {
        return bijective_;
    }

private:
    teq::CoordT indices_;

    bool bijective_;
};

using CoordptrT = std::shared_ptr<CoordMap>;

CoordptrT reduce (std::vector<teq::RankT> red_dims);

CoordptrT extend (teq::RankT rank, std::vector<teq::DimT> ext);

CoordptrT permute (std::vector<teq::RankT> dims);

}

#endif // ETEQ_COORD_HPP