FieldFieldReuseFunctions.H

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#ifndef Foam_FieldFieldReuseFunctions_H
#define Foam_FieldFieldReuseFunctions_H

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

template<template<class> class Field, class TypeR, class Type1>
struct reuseTmpFieldField
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, Type1>>& tf1
    )
    {
        return FieldField<Field, TypeR>::NewCalculatedType(tf1());
    }
};


template<template<class> class Field, class TypeR>
struct reuseTmpFieldField<Field, TypeR, TypeR>
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, TypeR>>& tf1,
        const bool initCopy = false
    )
    {
        if (tf1.movable())
        {
            return tf1;
        }

        auto rtf = FieldField<Field, TypeR>::NewCalculatedType(tf1());

        if (initCopy)
        {
            rtf.ref() = tf1();
        }

        return rtf;
    }
};


//- Global function forwards to reuseTmpFieldField::New
template<template<class> class Field, class TypeR>
tmp<FieldField<Field, TypeR>> New
(
    const tmp<FieldField<Field, TypeR>>& tf1,
    const bool initCopy = false
)
{
    return reuseTmpFieldField<Field, TypeR, TypeR>::New(tf1, initCopy);
}


template
<
    template<class> class Field,
    class TypeR,
    class Type1,
    class Type12,
    class Type2
>
struct reuseTmpTmpFieldField
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, Type1>>& tf1,
        const tmp<FieldField<Field, Type2>>& tf2
    )
    {
        return FieldField<Field, TypeR>::NewCalculatedType(tf1());
    }
};


template<template<class> class Field, class TypeR, class Type1, class Type12>
struct reuseTmpTmpFieldField<Field, TypeR, Type1, Type12, TypeR>
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, Type1>>& tf1,
        const tmp<FieldField<Field, TypeR>>& tf2
    )
    {
        if (tf2.movable())
        {
            return tf2;
        }

        return FieldField<Field, TypeR>::NewCalculatedType(tf1());
    }
};


template<template<class> class Field, class TypeR, class Type2>
struct reuseTmpTmpFieldField<Field, TypeR, TypeR, TypeR, Type2>
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, TypeR>>& tf1,
        const tmp<FieldField<Field, Type2>>& tf2
    )
    {
        if (tf1.movable())
        {
            return tf1;
        }

        return FieldField<Field, TypeR>::NewCalculatedType(tf1());
    }
};


template<template<class> class Field, class TypeR>
struct reuseTmpTmpFieldField<Field, TypeR, TypeR, TypeR, TypeR>
{
    static tmp<FieldField<Field, TypeR>> New
    (
        const tmp<FieldField<Field, TypeR>>& tf1,
        const tmp<FieldField<Field, TypeR>>& tf2
    )
    {
        if (tf1.movable())
        {
            return tf1;
        }
        if (tf2.movable())
        {
            return tf2;
        }

        return FieldField<Field, TypeR>::NewCalculatedType(tf1());
    }
};


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //