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  • /*---------------------------------------------------------------------------*\
      =========                 |
      \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
       \\    /   O peration     |
        \\  /    A nd           | www.openfoam.com
         \\/     M anipulation  |
    -------------------------------------------------------------------------------
        Copyright (C) 2021 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::Function1Types::None
    
    Description
        Templated placeholder function that returns an error message if called.
    
        This is principally useful for interfaces that expect a Function1
        but where it is not necessarily used by a particular submodel.
    
    \*---------------------------------------------------------------------------*/
    
    #ifndef Function1Types_None_H
    #define Function1Types_None_H
    
    #include "Function1.H"
    
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
    
    namespace Foam
    {
    namespace Function1Types
    {
    
    /*---------------------------------------------------------------------------*\
                                Class None Declaration
    \*---------------------------------------------------------------------------*/
    
    template<class Type>
    class None
    :
        public Function1<Type>
    {
        // Private Member Data
    
            //- Context (eg, dictionary name) for the function
            string context_;
    
    
    public:
    
        //- Runtime type information
        TypeName("none");
    
    
        // Generated Methods
    
            //- Default copy constructor
            None(const None<Type>& rhs) = default;
    
            //- No copy assignment
            void operator=(const None<Type>&) = delete;
    
    
        // Constructors
    
            //- Construct from entry name, dictionary and optional registry
            None
            (
                const word& entryName,
                const dictionary& dict,
                const objectRegistry* obrPtr = nullptr
            );
    
            //- Construct and return a clone
            virtual tmp<Function1<Type>> clone() const
            {
                return tmp<Function1<Type>>(new None<Type>(*this));
            }
    
    
        //- Destructor
        virtual ~None() = default;
    
    
        // Member Functions
    
            //- Value is independent of x
            virtual inline bool constant() const { return true; }
    
            //- Placeholder: generates an error if called
            virtual Type value(const scalar x) const;
    
            //- Placeholder: generates an error if called
            virtual Type integral(const scalar x1, const scalar x2) const;
    
            //- Placeholder: generates an error if called
            virtual tmp<Field<Type>> value(const scalarField& x) const;
    
            //- Write as primitive (inline) format
            virtual void writeData(Ostream& os) const;
    };
    
    
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
    
    } // End namespace Function1Types
    } // End namespace Foam
    
    #ifdef NoRepository
        #include "NoneFunction1.C"
    #endif
    
    // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
    
    #endif
    
    // ************************************************************************* //