| /*---------------------------------------------------------------------------*\ | |
| ========= | | |
| \\ / F ield | OpenFOAM: The Open Source CFD Toolbox | |
| \\ / O peration | Website: https://openfoam.org | |
| \\ / A nd | Copyright (C) 2026 OpenFOAM Foundation | |
| \\/ M anipulation | | |
| ------------------------------------------------------------------------------- | |
| 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::expression::Base | |
| Description | |
| An empty structure the type of which is used to indicate access to the base | |
| expression of a given class. | |
| \*---------------------------------------------------------------------------*/ | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| namespace Foam | |
| { | |
| namespace expression | |
| { | |
| /*---------------------------------------------------------------------------*\ | |
| Class Base Declaration | |
| \*---------------------------------------------------------------------------*/ | |
| struct Base | |
| {}; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace expression | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| template<class Base, class Derived> | |
| using EnableIfBaseOf = | |
| std::enable_if_t<std::is_base_of<Base, Derived>::value>; | |
| template<class Base, class Derived> | |
| using EnableIfNotBaseOf = | |
| std::enable_if_t<!std::is_base_of<Base, Derived>::value>; | |
| template<class Base, class Derived, class True, class False> | |
| using ConditionalIfBaseOf = | |
| std::conditional_t<std::is_base_of<Base, Derived>::value, True, False>; | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| } // End namespace Foam | |
| // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * // | |
| // ************************************************************************* // | |