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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/>.
Classes
Foam::expression::Operation
Foam::expression::Name
Description
Classes for constructing string representations of expressions.
The Foam::expression::Operation trait provides the base operator type and
its precedence for a given expression.
The Foam::expression::Name class constructs the actual name. These are
specialised for unary and binary operations in order to construct compound
names. Foam::expression::Name implements a streamed output for any
non-expression and a type and a pointer address for any expressionable
container. This should be specialised for any container type for which a
user-readable name is available.
\*---------------------------------------------------------------------------*/
#ifndef expressionName_H
#define expressionName_H
#include "expressionExpressionable.H"
#include "OStringStream.H"
#include "typeName.H"
#include <limits>
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace expression
{
/*---------------------------------------------------------------------------*\
Class Operation Declaration
\*---------------------------------------------------------------------------*/
template<class Expression>
struct Operation
{
using type = void;
static const signed char precedence =
std::numeric_limits<signed char>::min();
};
/*---------------------------------------------------------------------------*\
Class Name Declaration
\*---------------------------------------------------------------------------*/
template<class Expression, class = void>
struct Name;
template<class Expression>
struct Name<Expression, EnableIfNotExpressionable<Expression>>
{
static word& append(word& name, const Expression& e)
{
OStringStream oss;
oss << e;
return name.append(oss.str());
}
static word value(const Expression& e)
{
word name;
return append(name, e);
}
};
template<class Expression>
struct Name<Expression, EnableIfExpressionable<Expression>>
{
static word& append(word& name, const Expression& f)
{
std::ostringstream oss;
oss << std::hex << reinterpret_cast<uintptr_t>(&(*f.begin()));
return name.append
(
'[', typeName<Expression, word>(), ':', oss.str(), ']'
);
}
static word value(const Expression& e)
{
word name;
return append(name, e);
}
};
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//- Function to get the name of an expression. More convenient than using the
// classes above directly, as the expression type is deduced.
template<class Expression>
auto name(const Expression& e)
{
return Name<Expression>::value(e);
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace expression
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //
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