exprResultStored.H

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/*---------------------------------------------------------------------------*\
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  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     |
    \\  /    A nd           | www.openfoam.com
     \\/     M anipulation  |
-------------------------------------------------------------------------------
    Copyright (C) 2012-2018 Bernhard Gschaider <bgschaid@hfd-research.com>
    Copyright (C) 2019-2020 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::expressions::exprResultStored
 
Description
    An exprResult with persistence.
 
    \heading Dictionary parameters
    \table
        Property    | Description                           | Required | Default
        name        | The result name                       | yes |
        initialValue | The initial value                    | yes |
        value        | The expression result (dictionary)   | no  |
    \endtable
 
SourceFiles
    StoredExpressionResult.C
 
\*---------------------------------------------------------------------------*/
 
#ifndef expressions_exprResultStored_H
#define expressions_exprResultStored_H
 
#include "exprResult.H"
#include "exprString.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace expressions
{
 
/*---------------------------------------------------------------------------*\
                      Class exprResultStored Declaration
\*---------------------------------------------------------------------------*/
 
class exprResultStored
:
    public expressions::exprResult
{
    // Private Data
 
        //- The name of the expression
        word name_;
 
        //- The initial value expression
        expressions::exprString startExpr_;
 
 
protected:
 
    // Protected Member Functions
 
        //- Reset at new timestep - disabling locally
        virtual void resetImpl() {}
 
 
public:
 
    //- Runtime type information
    TypeNameNoDebug("exprResultStored");
 
 
    // Constructors
 
        //- Default construct
        exprResultStored();
 
        //- Copy construct
        exprResultStored(const exprResultStored& rhs);
 
        //- Construct from a dictionary
        explicit exprResultStored(const dictionary& dict);
 
 
    // Selectors
 
        virtual autoPtr<exprResult> clone() const
        {
            return autoPtr<exprResult>
            (
                new exprResultStored(*this)
            );
        }
 
 
    //- Destructor
    virtual ~exprResultStored() = default;
 
 
    // Member Functions
 
        //- The name of the expression
        const word& name() const
        {
            return name_;
        }
 
        //- The initial value expression
        const expressions::exprString& initialValueExpression() const
        {
            return startExpr_;
        }
 
 
        void writeDict(Ostream& os) const;
 
 
    // Member Operators
 
        //- Copy assignment
        void operator=(const exprResultStored& rhs);
 
        //- Copy assignment
        void operator=(const exprResult& rhs);
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace expressions
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
// IO Operators
Istream& operator>>(Istream& is, expressions::exprResultStored& data);
Ostream& operator<<(Ostream& is, const expressions::exprResultStored& data);
 
// Comparison
inline bool operator!=
(
    const expressions::exprResultStored& a,
    const expressions::exprResultStored& b
)
{
    return (&a != &b);
}
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //