fieldExprDriverTemplates.C

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    Copyright (C) 2019 OpenCFD Ltd.
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License
    This file is part of OpenFOAM.

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// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class Type>
Foam::tmp<Foam::Field<Type>>
Foam::expressions::fieldExpr::parseDriver::getField
(
    const word& name
) const
{
    bool isPointVal = false;
    bool isUniformVal = false;

    tmp<Field<Type>> tfield;

    if (hasVariable(name) && variable(name).isType<Type>())
    {
        const expressions::exprResult& var = variable(name);

        isPointVal = var.isPointValue();
        isUniformVal = var.isUniform();

        tfield = var.cref<Type>().clone();
    }

    if (tfield.valid())
    {
        const label fldLen = tfield().size();
        const label len = (isPointVal ? this->pointSize() : this->size());

        if (returnReduce((fldLen == len), andOp<bool>()))
        {
            return tfield;
        }

        if (!isUniformVal)
        {
            WarningInFunction
                << "Variable " << name
                << " does not fit the size and is not a uniform value." << nl
                << "Using average value" << endl;
        }

        return tmp<Field<Type>>::New(this->size(), gAverage(tfield));
    }

    return tfield;
}


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