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========= |
\\ / 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/>.
\*---------------------------------------------------------------------------*/
#include "expressions.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace expression
{
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//- Inherit expressionability from the underlying Field
template<class Type>
struct Expressionable<fvPatchField<Type>>
:
public Expressionable<Field<Type>>
{};
//- Inherit expressionability from the base Field
template<class Type>
struct Expressionable<fvPatchField<Type>, Arguments<label>>
:
public Expressionable<Field<Type>, Arguments<label>>
{};
//- Inherit expressionability from the base Field
template<class Type>
struct Expressionable
<
fvPatchField<Type>,
Arguments<typename Field<Type>::const_iterator>
>
:
public Expressionable
<
Field<Type>,
Arguments<typename Field<Type>::const_iterator>
>
{};
//- Inherit access by index from the base Field
template<class Type>
struct Operate<fvPatchField<Type>, Arguments<label>>
:
public Operate<Field<Type>, Arguments<label>>
{};
//- Inherit access to the start and end iterators from the base Field
template<class Type, bool Index>
struct Operate<fvPatchField<Type>, Arguments<Bound<Index>>>
:
public Operate<Field<Type>, Arguments<Bound<Index>>>
{};
//- Inherit access to a value from the base Field
template<class Type, class ... Args>
struct Operate
<
fvPatchField<Type>,
Arguments<typename Field<Type>::const_iterator, Args ...>
>
:
public Operate
<
Field<Type>,
Arguments<typename Field<Type>::const_iterator, Args ...>
>
{};
//- Define access to the base expression of a fvPatchField as the base Field
template<class Type>
struct Operate<fvPatchField<Type>, Arguments<Base>>
{
using type = const Field<Type>&;
static type access(const fvPatchField<Type>& f, const Base&)
{
return static_cast<type>(f);
}
};
//- Define the types that result from operating on a fvPatchField as the same
// as that result from the base Field
template<class Type>
struct Result<fvPatchField<Type>>
{
template<class Expression>
using operateType =
typename Operate<std::decay_t<Expression>, Arguments<Base>>::type;
template<class Expression>
using elementType =
typename Result
<
Field<Type>
>::template elementType<operateType<Expression>>;
template<class Expression>
using type =
typename Result
<
Field<Type>
>::template type<operateType<Expression>>;
};
//- Define reduction of a fvPatchField as the same as that of the base Field
template<class Type>
struct Reduce<fvPatchField<Type>>
:
public Reduce<Field<Type>>
{};
//- Implement selection of a fvPatchField within an expression. Construct a
// calculated field type on non-constrained patch types, and pass through a
// reference to the internal field if this was provided.
template<class Type>
struct Select
<
fvPatchField<Type>,
true,
EnableIfExpressionable<fvPatchField<Type>>
>
{
using type = tmp<fvPatchField<Type>>;
template<class Expression>
static type New
(
const Expression& e,
const DimensionedField<Type, fvMesh, Field>& iF
)
{
tmp<fvPatchField<Type>> tResult =
fvPatchField<Type>::New
(
fvPatchField<Type>::calculatedType(),
getFirst<Patch<fvPatch>>(e),
iF
);
tResult.ref() = e;
return tResult;
}
template<class Expression>
static type New(const Expression& e)
{
return
New
(
e,
NullObjectRef<DimensionedField<Type, fvMesh, Field>>()
);
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace expression
} // End namespace Foam
// ************************************************************************* //
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