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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::exprTypeTraits
Description
Simple type identifiers for polymorphic expression values.
The definitions are similar to std::integral_constant in that they
provide value, value_type (and name).
\*---------------------------------------------------------------------------*/
#ifndef expressions_exprTraits_H
#define expressions_exprTraits_H
// Regular field types
#include "label.H"
#include "scalar.H"
#include "vector.H"
#include "sphericalTensor.H"
#include "symmTensor.H"
#include "tensor.H"
#include "word.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
namespace Foam
{
namespace expressions
{
//- An enumeration of known and expected expression value types.
// Do not rely on the enumeration values for any direct coding.
//
// \note NONE use used when initializing types, whereas INVALID is used
// for unsupported types (never as a stored type).
// This avoids false positives when testing.
//
// Except NONE and INVALID, the enumerations will mostly not be used
// directly, but through exprTypeTraits :: value
enum class valueTypeCode : unsigned char
{
NONE = 0, //!< No type, or default initialized type
INVALID, //!< Invalid/unknown/error type
// Rank 0 types
type_bool, //!< Type is 'bool'
type_label, //!< Type is 'label'
type_scalar, //!< Type is 'scalar'
// Rank 1 types
type_vector, //!< Type is 'vector'
// Rank 2 types
type_sphericalTensor, //!< Type is 'sphericalTensor'
type_symmTensor, //!< Type is 'symmTensor'
type_tensor //!< Type is 'tensor'
};
// Global Functions
//- From string to valueTypeCode (if any)
valueTypeCode valueTypeCodeOf(const word& dataTypeName);
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
} // End namespace expressions
/*---------------------------------------------------------------------------*\
Class exprTypeTraits Declaration
\*---------------------------------------------------------------------------*/
// Generic enumerated traits is INVALID (unknown)
template<class Type>
struct exprTypeTraits
{
typedef Type value_type;
static constexpr const char* const name = "";
static constexpr
::Foam::expressions::valueTypeCode value =
::Foam::expressions::valueTypeCode::INVALID;
};
#undef defineExprTypeTraits
#define defineExprTypeTraits(Type, Name) \
template<> \
struct exprTypeTraits<Type> \
{ \
typedef Type value_type; \
static constexpr const char* const name = #Name; \
static constexpr \
::Foam::expressions::valueTypeCode value = \
::Foam::expressions::valueTypeCode::type_##Name; \
};
// Define with "name" to match regular pTraits typeName
defineExprTypeTraits(bool, bool);
defineExprTypeTraits(::Foam::label, label);
defineExprTypeTraits(::Foam::scalar, scalar);
defineExprTypeTraits(::Foam::vector, vector);
defineExprTypeTraits(::Foam::tensor, tensor);
defineExprTypeTraits(::Foam::sphericalTensor, sphericalTensor);
defineExprTypeTraits(::Foam::symmTensor, symmTensor);
#undef defineExprTypeTraits
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
//- A word representation of a valueTypeCode. Empty for INVALID
word name(const expressions::valueTypeCode typeCode);
//- A word representation of a valueTypeCode. Empty for INVALID
template<>
struct nameOp<expressions::valueTypeCode>
{
word operator()(const expressions::valueTypeCode typeCode) const
{
return Foam::name(typeCode);
}
};
// No IOstream Operators for valueTypeCode at the moment (Nov 2021)
} // End namespace Foam
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
#endif
// ************************************************************************* //