fieldExpression.H

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/*---------------------------------------------------------------------------*\
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   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2012-2019 OpenFOAM Foundation
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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
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Class
    Foam::functionObjects::fieldExpression

Description

See also
    Foam::functionObjects::fvMeshFunctionObject

SourceFiles
    fieldExpression.C

\*---------------------------------------------------------------------------*/

#ifndef functionObjects_fieldExpression_H
#define functionObjects_fieldExpression_H

#include "fvMeshFunctionObject.H"
#include "volFieldsFwd.H"

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

namespace Foam
{
namespace functionObjects
{

/*---------------------------------------------------------------------------*\
                         Class fieldExpression Declaration
\*---------------------------------------------------------------------------*/

class fieldExpression
:
    public fvMeshFunctionObject
{
protected:

    // Protected member data

        //- Name of field to process
        word fieldName_;

        //- Name of result field
        word resultName_;


    // Protected member functions

        virtual bool calc() = 0;

        void setResultName(const word& typeName, const word& defaultArg);

        template<class Type>
        bool foundObject(const word& name);


public:

    //- Runtime type information
    TypeName("fieldExpression");


    // Constructors

        //- Construct from Time and dictionary
        fieldExpression
        (
            const word& name,
            const Time& runTime,
            const dictionary& dict,
            const word& fieldName = word::null,
            const word& resultName = word::null
        );

        //- Disallow default bitwise copy construction
        fieldExpression(const fieldExpression&) = delete;


    //- Destructor
    virtual ~fieldExpression();


    // Member Functions

        //- Read the fieldExpression data
        virtual bool read(const dictionary&);

        //- Calculate the result field
        virtual bool execute();

        //- Write the result field
        virtual bool write();

        //- Clear the result field from the objectRegistry
        virtual bool clear();


    // Member Operators

        //- Disallow default bitwise assignment
        void operator=(const fieldExpression&) = delete;
};


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

} // End namespace functionObjects
} // End namespace Foam

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

#ifdef NoRepository
    #include "fieldExpressionTemplates.C"
#endif

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

#endif

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