ViewField.H

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#ifndef VIEWFIELD_H
#define VIEWFIELD_H
 
#include <string>
 
#include "amr-wind/core/FieldDescTypes.H"
#include "AMReX_MultiFab.H"
#include "AMReX_Vector.H"
 
namespace amr_wind {
 
class FieldRepo;

template <typename T>
class ViewField
{
public:
    friend T;
 
    ViewField(const ViewField&) = delete;
    ViewField& operator=(const ViewField&) = delete;
 
    ViewField(ViewField&&) = default;
    ViewField& operator=(ViewField&&) = default;
 
    [[nodiscard]] std::string name() const { return m_src.name() + "view"; }

    [[nodiscard]] int num_comp() const { return m_ncomp; }
 
    [[nodiscard]] const amrex::IntVect& num_grow() const
    {
        return m_src.num_grow();
    }
 
    [[nodiscard]] FieldLoc field_location() const
    {
        return m_src.field_location();
    }

    amrex::MultiFab& operator()(int lev) { return m_data[lev]; }
    const amrex::MultiFab& operator()(int lev) const { return m_data[lev]; }
 
    amrex::Vector<amrex::MultiFab*> vec_ptrs()
    {
        return amrex::GetVecOfPtrs(m_data);
    }
 
    [[nodiscard]] amrex::Vector<const amrex::MultiFab*> vec_const_ptrs() const
    {
        return amrex::GetVecOfConstPtrs(m_data);
    }

    [[nodiscard]] const FieldRepo& repo() const { return m_src.repo(); }

    T& source_field() { return m_src; }
    [[nodiscard]] const T& source_field() const { return m_src; }
 
private:
    // cppcheck-suppress noExplicitConstructor
    ViewField(T& src, int scomp = 0, int ncomp = 1);

    T& m_src;

    int m_scomp;

    int m_ncomp;

    amrex::Vector<amrex::MultiFab> m_data;
};
 
} // namespace amr_wind
 
#endif /* VIEWFIELD_H */