oneFieldField.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
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     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2011-2016 OpenFOAM Foundation
    Copyright (C) 2019-2022 OpenCFD Ltd.
-------------------------------------------------------------------------------
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/>.
 
Class
    Foam::oneFieldField
 
Description
    A class representing the concept of a field of oneFields used to
    avoid unnecessary manipulations for objects which are known to be one at
    compile-time.
 
    Used for example as the density argument to a function written for
    compressible to be used for incompressible flow.
 
\*---------------------------------------------------------------------------*/
 
#ifndef Foam_oneFieldField_H
#define Foam_oneFieldField_H
 
#include "oneField.H"
#include "Pair.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
/*---------------------------------------------------------------------------*\
                        Class oneFieldField Declaration
\*---------------------------------------------------------------------------*/
 
class oneFieldField
:
    public one
{
public:
 
    // Constructors
 
        //- Default construct
        oneFieldField() noexcept = default;
 
 
    // Member Operators
 
        //- Return the field
        oneField operator[](const label) const noexcept
        {
            return oneField{};
        }
 
        //- Return the field element
        one operator[](const labelPair&) const noexcept
        {
            return one{};
        }
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //