FieldReuseFunctions.H

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | Copyright (C) 2011 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
\*---------------------------------------------------------------------------*/
 
#ifndef FieldReuseFunctions_H
#define FieldReuseFunctions_H
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
template<class TypeR, class Type1>
class reuseTmp
{
public:
 
    static tmp<Field<TypeR> > New(const tmp<Field<Type1> >& tf1)
    {
        return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
    }
 
    static void clear(const tmp<Field<Type1> >& tf1)
    {
        tf1.clear();
    }
};
 
 
template<class TypeR>
class reuseTmp<TypeR, TypeR>
{
public:
 
    static tmp<Field<TypeR> > New(const tmp<Field<TypeR> >& tf1)
    {
        if (tf1.isTmp())
        {
            return tf1;
        }
        else
        {
            return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
        }
    }
 
    static void clear(const tmp<Field<TypeR> >& tf1)
    {
        if (tf1.isTmp())
        {
            tf1.ptr();
        }
    }
};
 
 
template<class TypeR, class Type1, class Type12, class Type2>
class reuseTmpTmp
{
public:
 
    static tmp<Field<TypeR> > New
    (
        const tmp<Field<Type1> >& tf1,
        const tmp<Field<Type2> >& tf2
    )
    {
        return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
    }
 
    static void clear
    (
        const tmp<Field<Type1> >& tf1,
        const tmp<Field<Type2> >& tf2
    )
    {
        tf1.clear();
        tf2.clear();
    }
};
 
 
template<class TypeR, class Type1, class Type12>
class reuseTmpTmp<TypeR, Type1, Type12, TypeR>
{
public:
 
    static tmp<Field<TypeR> > New
    (
        const tmp<Field<Type1> >& tf1,
        const tmp<Field<TypeR> >& tf2
    )
    {
        if (tf2.isTmp())
        {
            return tf2;
        }
        else
        {
            return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
        }
    }
 
    static void clear
    (
        const tmp<Field<Type1> >& tf1,
        const tmp<Field<TypeR> >& tf2
    )
    {
        tf1.clear();
        if (tf2.isTmp())
        {
            tf2.ptr();
        }
    }
};
 
 
template<class TypeR, class Type2>
class reuseTmpTmp<TypeR, TypeR, TypeR, Type2>
{
public:
 
    static tmp<Field<TypeR> > New
    (
        const tmp<Field<TypeR> >& tf1,
        const tmp<Field<Type2> >& tf2
    )
    {
        if (tf1.isTmp())
        {
            return tf1;
        }
        else
        {
            return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
        }
    }
 
    static void clear
    (
        const tmp<Field<TypeR> >& tf1,
        const tmp<Field<Type2> >& tf2
    )
    {
        if (tf1.isTmp())
        {
            tf1.ptr();
        }
        tf2.clear();
    }
};
 
 
template<class TypeR>
class reuseTmpTmp<TypeR, TypeR, TypeR, TypeR>
{
public:
 
    static tmp<Field<TypeR> > New
    (
        const tmp<Field<TypeR> >& tf1,
        const tmp<Field<TypeR> >& tf2
    )
    {
        if (tf1.isTmp())
        {
            return tf1;
        }
        else if (tf2.isTmp())
        {
            return tf2;
        }
        else
        {
            return tmp<Field<TypeR> >(new Field<TypeR>(tf1().size()));
        }
    }
 
    static void clear
    (
        const tmp<Field<TypeR> >& tf1,
        const tmp<Field<TypeR> >& tf2
    )
    {
        if (tf1.isTmp())
        {
            tf1.ptr();
            tf2.clear();
        }
        else if (tf2.isTmp())
        {
            tf1.clear();
            tf2.ptr();
        }
    }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //