GeometricFieldReuseFunctions.H

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#ifndef GeometricFieldReuseFunctions_H
#define GeometricFieldReuseFunctions_H
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
//- Test if a tmp GeometricField is reusable, which means that it has been
//- allocated (not a const-reference).
//
//  When GeometricField debug is on, also checks that the patches have
//  reusable types.
template
<
    class Type,
    template<class> class PatchField,
    class GeoMesh
>
bool reusable(const tmp<GeometricField<Type, PatchField, GeoMesh>>& tgf)
{
    if (tgf.isTmp())
    {
        if (GeometricField<Type, PatchField, GeoMesh>::debug)
        {
            for (const auto& p : tgf().boundaryField())
            {
                if
                (
                    !polyPatch::constraintType(p.patch().type())
                 && !isA<typename PatchField<Type>::Calculated>(p)
                )
                {
                    WarningInFunction
                        << "Attempt to reuse temporary with non-reusable BC "
                        << p.type() << endl;
 
                    return false;
                }
            }
        }
 
        return true;
    }
 
    return false;
}
 
 
template
<
    class TypeR,
    class Type1,
    template<class> class PatchField,
    class GeoMesh
>
struct reuseTmpGeometricField
{
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<Type1, PatchField, GeoMesh>>& tgf1,
        const word& name,
        const dimensionSet& dimensions
    )
    {
        const auto& gf1 = tgf1();
 
        return tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
    }
};
 
 
template<class TypeR, template<class> class PatchField, class GeoMesh>
struct reuseTmpGeometricField<TypeR, TypeR, PatchField, GeoMesh>
{
    //- Since the input and output types are identical, also allow
    //- optional copy assignment of the initial content.
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf1,
        const word& name,
        const dimensionSet& dimensions,
        const bool initCopy = false
    )
    {
        if (reusable(tgf1))
        {
            auto& gf1 = tgf1.constCast();
 
            gf1.rename(name);
            gf1.dimensions().reset(dimensions);
            return tgf1;
        }
 
        const auto& gf1 = tgf1();
 
        auto rtgf = tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
 
        if (initCopy)
        {
            rtgf.ref() == gf1;
        }
 
        return rtgf;
    }
};
 
 
//- This global function forwards to reuseTmpGeometricField::New
template<class TypeR, template<class> class PatchField, class GeoMesh>
tmp
<
    GeometricField<TypeR, PatchField, GeoMesh>
> New
(
    const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf1,
    const word& name,
    const dimensionSet& dimensions,
    const bool initCopy = false
)
{
    return reuseTmpGeometricField<TypeR, TypeR, PatchField, GeoMesh>::New
    (
        tgf1,
        name,
        dimensions,
        initCopy
    );
}
 
 
template
<
    class TypeR,
    class Type1,
    class Type12,
    class Type2,
    template<class> class PatchField,
    class GeoMesh
>
struct reuseTmpTmpGeometricField
{
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<Type1, PatchField, GeoMesh>>& tgf1,
        const tmp<GeometricField<Type2, PatchField, GeoMesh>>& tgf2,
        const word& name,
        const dimensionSet& dimensions
    )
    {
        const auto& gf1 = tgf1();
 
        return tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
    }
};
 
 
template
<
    class TypeR,
    class Type1,
    class Type12,
    template<class> class PatchField,
    class GeoMesh
>
struct reuseTmpTmpGeometricField
<
    TypeR, Type1, Type12, TypeR, PatchField, GeoMesh
>
{
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<Type1, PatchField, GeoMesh>>& tgf1,
        const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf2,
        const word& name,
        const dimensionSet& dimensions
    )
    {
        if (reusable(tgf2))
        {
            auto& gf2 = tgf2.constCast();
 
            gf2.rename(name);
            gf2.dimensions().reset(dimensions);
            return tgf2;
        }
 
        const auto& gf1 = tgf1();
 
        return tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
    }
};
 
 
template
<
    class TypeR,
    class Type2,
    template<class> class PatchField,
    class GeoMesh
>
struct reuseTmpTmpGeometricField
<
    TypeR, TypeR, TypeR, Type2, PatchField, GeoMesh
>
{
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf1,
        const tmp<GeometricField<Type2, PatchField, GeoMesh>>& tgf2,
        const word& name,
        const dimensionSet& dimensions
    )
    {
        if (reusable(tgf1))
        {
            auto& gf1 = tgf1.constCast();
 
            gf1.rename(name);
            gf1.dimensions().reset(dimensions);
            return tgf1;
        }
 
        const auto& gf1 = tgf1();
 
        return tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
    }
};
 
 
template<class TypeR, template<class> class PatchField, class GeoMesh>
struct reuseTmpTmpGeometricField
<
    TypeR, TypeR, TypeR, TypeR, PatchField, GeoMesh
>
{
    static tmp<GeometricField<TypeR, PatchField, GeoMesh>> New
    (
        const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf1,
        const tmp<GeometricField<TypeR, PatchField, GeoMesh>>& tgf2,
        const word& name,
        const dimensionSet& dimensions
    )
    {
        if (reusable(tgf1))
        {
            auto& gf1 = tgf1.constCast();
 
            gf1.rename(name);
            gf1.dimensions().reset(dimensions);
            return tgf1;
        }
        else if (reusable(tgf2))
        {
            auto& gf2 = tgf2.constCast();
 
            gf2.rename(name);
            gf2.dimensions().reset(dimensions);
            return tgf2;
        }
 
        const auto& gf1 = tgf1();
 
        return tmp<GeometricField<TypeR, PatchField, GeoMesh>>::New
        (
            IOobject
            (
                name,
                gf1.instance(),
                gf1.db()
            ),
            gf1.mesh(),
            dimensions
        );
    }
};
 
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //