VectorPostprocessors System

The VectorPostprocessors (VPP) System is designed to compute multiple related values each time it is executed. It can be thought of as a Postprocessor that outputs multiple values. For example, if you'd like to sample a solution field across a line, a VPP is a good choice (See PointValueSampler). In addition to outputting the values along the line a VPP can actually output multiple vectors simultaneously. Each vector is given a name, which is the column name. Together, all of the vectors a VPP outputs are output in one CSV file (usually per-timestep).

note

The Reporter System is a newer, more flexible system for computing aggregate values. It is recommended that new objects for aggregate calculations use the Reporter system.

Design

The VPP system builds off from MOOSE's UserObject system. Each VPP contains the full interface of a UserObject but is also expected to declare one or more vectors that will be populated and output by each VPP. There are no restrictions on the lengths of these vectors and the state of these vectors is managed by MOOSE and is automatically "restartable".

Vectors are declared with the declareVector method:

  VectorPostprocessorValue & declareVector(const std::string & vector_name);

This method returns a writable reference to a VectorPostprocessorValue that must be captured and stored in the object.

typedef Real ScatterVectorPostprocessorValue;

note

Developers are responsible for sizing these vectors as needed.

Output

VPP data can vary depending on the type of data being output. Again, the "sample over line" example mentioned in the introduction, a complete set of values will be generated each time the VPP is executed. The VPP system handles this scenario by creating separate output files for each invocation. The form of the output is as follows:


<filebase>_<vector name>_<serial number>.csv

# filebase - the normal output file base
# vector name - the name of the vector postprocessor (normally the input block name for that VPP)
# serial number - a fixed-width (normally four digit) number starting from 0000 and counting up.

In some cases however, a VPP may be accumulating information in time. For example, a user may wish to track values at several locations over time. The output might consist of the coordinates of those positions and the sampled value. In such a scenario, the default separate file output may be cumbersome as each file would effectively have a single line so a script to aggregate the information from all of the separate output files may need to be used. Instead, MOOSE supports an option, which may be of use in these cases:


contains_complete_history = true

By setting this value, you are telling MOOSE that the values in all of the vectors of the given VPP are cumulative. MOOSE will take advantage of this information in multiple ways. First, it will turn off writing the output to separate files and will drop the serial number from the output filename format altogether. Secondly, it will ignore any changed values in the vectors only outputting the newest rows in each vector postprocessor.

Parallel Assumptions

VectorPostprocessors are required to create their complete vectors on processor zero (rank 0). They should use the _communicator to reduce their values to processor zero. Objects that use VPPs must specify how they need the data by calling the getVectorPostprocessorValue() or getScatterVectorPostprocessorValue() functions with the correct arguments.

If the object needing VPP values only needs those values on processor zero it should call:


getVectorPostprocessorValue('the_vpp_parameter_name', 'the_vector_name', false)

The false in that call tells MOOSE that this object does NOT need the vector to be "broadcast" (i.e. "replicated).

If this object does indeed need the VPP data to be broadcast (replicated on all processors) it should make this call:


getVectorPostprocessorValue('the_vpp_parameter_name', 'the_vector_name', true)

In the very special case that a VPP is producing vectors that are num_procs length an object can ask for the value of a VPP to be "scattered" - which means that each processor will receive only the value that corresponds to it's rank (i.e. _values[rank]). This is accomplished by calling:


getScatterVectorPostprocessorValue('the_vpp_parameter_name', 'the_vector_name')

getScatterVectorPostprocessorValue() returns a const ScatterVectorPostprocessorValue &... which is a single scalar value that you don't index into. Each process receives the "correct" value and can just directly use it.

If the data in a VPP is naturally replicated on all processors a VectorPostprocessor should set _auto_broadcast = false in its validParams() like so:


params.set<bool>("_auto_broadcast") = "false";

This tells MOOSE that the data is already replicated and there is no need to broadcast it if another object is asking for it to be broadcast.

TimeData

The time_data parameter produces an additional CSV file containing just the real time and the corresponding time step for any VectorPostprocessor output information. This file may be useful in producing animations or your simulation results.

Restore on Rejected Timesteps

When a timestep is rejected due to a failed solve, a failed multiapp solve, or any other reason, the timestep is usually repeated, usually with a smaller timestep size. However, unlike postprocessors, VPPs are not restored to their old values, i.e. before the initial timestep, unless an old value is requested by another object. This can cause statefulness in objects dependent on the VPP between the repeated timesteps. If you suspect this might be causing indeterminate behavior in your simulation, you can check all the data being restored between the failed and repeated timestep by setting Problem/"verbose_restore"` = true`.

VectorPostprocessor List

Available Objects

Moose App
CSVReaderConverts columns of a CSV file into vectors of a VectorPostprocessor.
CSVReaderVectorPostprocessorConverts columns of a CSV file into vectors of a VectorPostprocessor.
ConstantVectorPostprocessorPopulate constant VectorPostprocessorValue directly from input file.
CylindricalAverageCompute a cylindrical average of a variableas a function of radius throughout the simulation domain.
EigenvaluesReturns the Eigen values from the nonlinear Eigen system.
ElementMaterialSamplerRecords all Real-valued material properties of a material object, or Real-valued material properties of the supplied property names on quadrature points on elements at the indicated execution points.
ElementValueSamplerSamples values of variables on elements.
ElementVariablesDifferenceMaxComputes the largest difference between two variable fields.
ElementsAlongLineOutputs the IDs of every element intersected by a user-defined line
ElementsAlongPlaneOutputs the IDs of every element intersected by a user-defined plane
ExtraIDIntegralVectorPostprocessorIntegrates or averages variables based on extra element IDs
HistogramVectorPostprocessorCompute a histogram for each column of a VectorPostprocessor
IntersectionPointsAlongLineGet the intersection points for all of the elements that are intersected by a line.
LeastSquaresFitPerforms a polynomial least squares fit on the data contained in another VectorPostprocessor
LeastSquaresFitHistoryPerforms a polynomial least squares fit on the data contained in another VectorPostprocessor and stores the full time history of the coefficients
LineFunctionSamplerSample one or more functions along a line.
LineMaterialRealSamplerSamples real-valued material properties for all quadrature points in all elements that are intersected by a specified line
LineValueSamplerSamples variable(s) along a specified line
MaterialVectorPostprocessorRecords all Real-valued material properties of a material object, or Real-valued material properties of the supplied property names on quadrature points on elements at the indicated execution points.
MeshDivisionFunctorReductionVectorPostprocessorPerform reductions on functors based on a per-mesh-division basis
NearestPointIntegralVariablePostprocessorCompute element variable integrals for nearest-point based subdomains
NodalValueSamplerSamples values of nodal variable(s).
PointValueSamplerSample a variable at specific points.
PositionsFunctorValueSamplerSample one or more functors at points specified by a Positions object.
SideValueSamplerSample variable(s) along a sideset, internal or external.
SidesetInfoVectorPostprocessorThis VectorPostprocessor collects meta data for provided sidesets.
SpatialUserObjectVectorPostprocessorOutputs the values of a spatial user object in the order of the specified spatial points
SphericalAverageCompute a spherical average of a variable as a function of radius throughout the simulation domain.
VariableValueVolumeHistogramCompute a histogram of volume fractions binned according to variable values.
VectorMemoryUsageGet memory stats for all ranks in the simulation
VectorOfPostprocessorsOutputs the values of an arbitrary user-specified set of postprocessors as a vector in the order specified by the user
VolumeHistogramCompute a histogram of volume fractions binned according to variable values.
WorkBalanceComputes several metrics for workload balance per processor
Phase Field App
EulerAngleUpdaterCheckProvide updated Euler angles after rigid body rotation of the grains.
FeatureVolumeVectorPostprocessorThis object is designed to pull information from the data structures of a "FeatureFloodCount" or derived object (e.g. individual feature volumes)
GrainForcesPostprocessorOutputs the values from GrainForcesPostprocessor
GrainTextureVectorPostprocessorGives out info on the grain boundary properties
Stochastic Tools App
GaussianProcessDataTool for extracting hyperparameter data from gaussian process user object and storing in VectorPostprocessor vectors.
SamplerDataTool for extracting Sampler object data and storing in VectorPostprocessor vectors.
SobolStatisticsCompute SOBOL statistics values of a given VectorPostprocessor objects and vectors.
StatisticsCompute statistical values of a given VectorPostprocessor objects and vectors.
StochasticResultsStorage container for stochastic simulation results coming from a Postprocessor.
Navier Stokes App
WaveSpeedVPPExtracts wave speeds from HLLC userobject for a given face
Heat Transfer App
SurfaceRadiationVectorPostprocessorVectorPostprocessor for accessing information stored in surface radiation user object
ViewfactorVectorPostprocessorVectorPostprocessor for accessing view factors from GrayLambertSurfaceRadiationBase UO
Salamander App
ParticleDataVectorPostprocessorCollects data which is stored in RayData on particles on a per timestep basis.
Solid Mechanics App
ADInteractionIntegralComputes the interaction integral, which is used to compute various fracture mechanics parameters at a crack tip, including KI, KII, KIII, and the T stress.
AverageSectionValueSamplerCompute the section's variable average in three-dimensions given a user-defined definition of the cross section.
CrackFrontNonlocalScalarMaterialComputes the average material at points provided by the crack_front_definition vectorpostprocessor.
CrackFrontNonlocalStressComputes the average stress normal to the crack face.
InteractionIntegralComputes the interaction integral, which is used to compute various fracture mechanics parameters at a crack tip, including KI, KII, KIII, and the T stress.
JIntegralComputes the J-Integral, a measure of the strain energy release rate at a crack tip, which can be used as a criterion for fracture growth. It can, alternatively, compute the C(t) integral
LineMaterialRankTwoSamplerAccess a component of a RankTwoTensor
LineMaterialRankTwoScalarSamplerCompute a scalar property of a RankTwoTensor
MixedModeEquivalentKComputes the mixed-mode stress intensity factor given the $var element = document.getElementById("moose-equation-e730b599-9594-4935-864d-871cf18f3dc8");katex.render("K_I", element, {displayMode:false,throwOnError:false});$ , $var element = document.getElementById("moose-equation-90d860e2-d279-4b10-83e1-bcc121a7c082");katex.render("K_{II}", element, {displayMode:false,throwOnError:false});$ , and $var element = document.getElementById("moose-equation-1e02db53-dc30-4390-93c7-b994e29e441b");katex.render("K_{III}", element, {displayMode:false,throwOnError:false});$ stress intensity factors
Ray Tracing App
PerProcessorRayTracingResultsVectorPostprocessorAccumulates ray tracing results (information about the trace) on a per-processor basis.
Thermal Hydraulics App
ADSampler1DRealSamples material properties at all quadrature points in mesh block(s)
Sampler1DRealSamples material properties at all quadrature points in mesh block(s)
Sampler1DVectorSamples a single component of array material properties at all quadrature points in mesh block(s)

Available Actions

Moose App
AddVectorPostprocessorActionAdd a VectorPostprocessor object to the simulation.

(moose/framework/include/vectorpostprocessors/VectorPostprocessor.h)

// This file is part of the MOOSE framework
// https://mooseframework.inl.gov
//
// All rights reserved, see COPYRIGHT for full restrictions
// https://github.com/idaholab/moose/blob/master/COPYRIGHT
//
// Licensed under LGPL 2.1, please see LICENSE for details
// https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

// MOOSE includes
#include "MooseTypes.h"
#include "OutputInterface.h"
#include "MooseEnum.h"
#include "ReporterContext.h"
#include "NonADFunctorInterface.h"

// libMesh
#include "libmesh/parallel.h"

// Forward declarations
class FEProblemBase;
class InputParameters;
class SamplerBase;
class VectorPostprocessorData;

template <typename T>
InputParameters validParams();

/**
 * Base class for Postprocessors that produce a vector of values.
 */
class VectorPostprocessor : public OutputInterface, public NonADFunctorInterface
{
public:
  static InputParameters validParams();

  VectorPostprocessor(const MooseObject * moose_object);

  virtual ~VectorPostprocessor() = default;

  /**
   * Returns the name of the VectorPostprocessor.
   */
  std::string PPName() const { return _vpp_name; }

  /**
   * Return whether or not this VectorPostprocessor contains complete history
   */
  bool containsCompleteHistory() const { return _contains_complete_history; }

  /**
   * Return true if the VPP is operating in distributed mode.
   */
  bool isDistributed() const { return _is_distributed; }

  /**
   * Return the names of the vectors associated with this object.
   */
  const std::set<std::string> & getVectorNames() const;

protected:
  /**
   * Register a new vector to fill up.
   */
  VectorPostprocessorValue & declareVector(const std::string & vector_name);

  /// The name of the VectorPostprocessor
  const std::string _vpp_name;

  /// The FEProblemBase
  FEProblemBase & _vpp_fe_problem;

  /// DISTRIBUTED or REPLICATED
  const MooseEnum & _parallel_type;

  friend class SamplerBase;

private:
  const MooseObject & _vpp_moose_object;

  const THREAD_ID _vpp_tid;

  const bool _contains_complete_history;

  const bool _is_distributed;

  const bool _is_broadcast;

  std::map<std::string, VectorPostprocessorValue> _thread_local_vectors;

  std::set<std::string> _vector_names;
};

/////////////////////////////////////////////////////////////////////////////////////////////////////
// The following items were created to maintain the various getScatter methods in the
// VectorPostprocessorInterface.

// Special consumer module add
extern const ReporterMode REPORTER_MODE_VPP_SCATTER;

/*
 * Special ReporterContext that performs a scatter operation if a getScatter method is called on the
 * VPP value.
 *
 * The source file contains an explicit instantiation.
 * @see VectorPostprocessorInterface
 */
template <typename T>
class VectorPostprocessorContext : public ReporterGeneralContext<T>
{
public:
  VectorPostprocessorContext(const libMesh::ParallelObject & other,
                             const MooseObject & producer,
                             ReporterState<T> & state);
  virtual void finalize() override;
  virtual void copyValuesBack() override;

  const ScatterVectorPostprocessorValue & getScatterValue() const;
  const ScatterVectorPostprocessorValue & getScatterValueOld() const;

private:
  ScatterVectorPostprocessorValue _scatter_value;
  ScatterVectorPostprocessorValue _scatter_value_old;
};

(moose/framework/include/utils/MooseTypes.h)

// This file is part of the MOOSE framework
// https://mooseframework.inl.gov
//
// All rights reserved, see COPYRIGHT for full restrictions
// https://github.com/idaholab/moose/blob/master/COPYRIGHT
//
// Licensed under LGPL 2.1, please see LICENSE for details
// https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "Moose.h"
#include "ADReal.h"
#include "EigenADReal.h"
#include "ChainedReal.h"
#include "ChainedADReal.h"
#include "ADRankTwoTensorForward.h"
#include "ADRankThreeTensorForward.h"
#include "ADRankFourTensorForward.h"
#include "ADSymmetricRankTwoTensorForward.h"
#include "ADSymmetricRankFourTensorForward.h"

// This is not strictly needed here, but it used to be included by ADReal.h
// so developers relied heavily on it being already available
#include "MooseError.h"

#include "libmesh/libmesh.h"
#include "libmesh/id_types.h"
#include "libmesh/stored_range.h"
#include "libmesh/petsc_macro.h"
#include "libmesh/boundary_info.h"
#include "libmesh/parameters.h"
#include "libmesh/dense_vector.h"
#include "libmesh/dense_matrix.h"
#include "libmesh/int_range.h"

// BOOST include
#include "boost/bitmask_operators.h"

#include "libmesh/ignore_warnings.h"
#include "Eigen/Core"
#include "libmesh/restore_warnings.h"
#include "libmesh/tensor_tools.h"

#include "metaphysicl/ct_types.h"

#include <string>
#include <vector>
#include <memory>
#include <type_traits>
#include <functional>

#if !defined(INCLUDE_NLOHMANN_JSON_HPP_) && !defined(MOOSE_NLOHMANN_INCLUDED)
#undef INCLUDE_NLOHMANN_JSON_FWD_HPP_
#include "nlohmann/json_fwd.h"
#define MOOSE_NLOHMANN_INCLUDED
#endif

// DO NOT USE (Deprecated)
#define MooseSharedPointer std::shared_ptr
#define MooseSharedNamespace std

/**
 * Macro for inferring the proper type of a normal loop index compatible
 * with the "auto" keyword.
 * Usage:
 *   for (auto i = beginIndex(v); i < v.size(); ++i)    // default index is zero
 *   for (auto i = beginIndex(v, 1); i < v.size(); ++i) // index is supplied
 */
// The multiple macros that you would need anyway [as per: Crazy Eddie (stack overflow)]
#ifdef __clang__
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wgnu-zero-variadic-macro-arguments"
#endif

#define beginIndex_0() ERROR-- > "beginIndex() requires one or two arguments"
#define beginIndex_1(A) decltype(A.size())(0)
#define beginIndex_2(A, B) decltype(A.size())(B)
#define beginIndex_3(A, B, C) ERROR-- > "beginIndex() requires one or two arguments"
#define beginIndex_4(A, B, C, D) ERROR-- > "beginIndex() requires one or two arguments"

// The interim macro that simply strips the excess and ends up with the required macro
#define beginIndex_X(x, A, B, C, D, FUNC, ...) FUNC

// The macro that the programmer uses
#define beginIndex(...)                                                                            \
  beginIndex_X(,                                                                                   \
               ##__VA_ARGS__,                                                                      \
               beginIndex_4(__VA_ARGS__),                                                          \
               beginIndex_3(__VA_ARGS__),                                                          \
               beginIndex_2(__VA_ARGS__),                                                          \
               beginIndex_1(__VA_ARGS__),                                                          \
               beginIndex_0(__VA_ARGS__))

/**
 * MooseIndex Macro for creating an index type of the right type for loops and other places where
 * type matching is important.
 * Usage:
 *
 * Type t;
 *
 * Container type:
 * for (MooseIndex(t) i = 0; i < t.size(); ++i)
 *
 * POD type:
 * for (MooseIndex(t) i = 0; i < t; ++i)
 */
#define MooseIndex(type) decltype(_MooseIndex(type, 0))

// SFINAE templates for type MooseIndex type selection
template <typename T, typename std::enable_if<std::is_integral<T>::value>::type * = nullptr>
typename std::remove_const<T>::type
_MooseIndex(T, int)
{
}

template <typename T>
decltype(std::declval<T>().size())
_MooseIndex(T &&, int)
{
}

template <typename T>
decltype("NOTE: MooseIndex only works with integers and objects with size()!")
_MooseIndex(T, double) = delete;

#ifdef __clang__
#pragma clang diagnostic pop
#endif

/**
 * forward declarations
 */
template <typename>
class MooseArray;
template <typename>
class MaterialProperty;
template <typename>
class ADMaterialProperty;
class InputParameters;

namespace libMesh
{
typedef VectorValue<Real> RealVectorValue;
typedef Eigen::Matrix<Real, Moose::dim, 1> RealDIMValue;
typedef Eigen::Matrix<Real, Eigen::Dynamic, 1> RealEigenVector;
typedef Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim> RealVectorArrayValue;
typedef Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim * Moose::dim> RealTensorArrayValue;
typedef Eigen::Matrix<Real, Eigen::Dynamic, Eigen::Dynamic> RealEigenMatrix;
typedef TensorValue<Real> RealTensorValue;

namespace TensorTools
{
template <>
struct IncrementRank<Eigen::Matrix<Real, Eigen::Dynamic, 1>>
{
  typedef Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim> type;
};

template <>
struct IncrementRank<Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim>>
{
  typedef Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim * Moose::dim> type;
};

template <>
struct DecrementRank<Eigen::Matrix<Real, Eigen::Dynamic, Moose::dim>>
{
  typedef Eigen::Matrix<Real, Eigen::Dynamic, 1> type;
};
}
}

// Common types defined in libMesh
using libMesh::Gradient;
using libMesh::RealGradient;

// Bring these common types added to the libMesh namespace in this header
// to global namespace
using libMesh::DenseMatrix;
using libMesh::DenseVector;
using libMesh::RealDIMValue;
using libMesh::RealEigenMatrix;
using libMesh::RealEigenVector;
using libMesh::RealTensorArrayValue;
using libMesh::RealTensorValue;
using libMesh::RealVectorArrayValue;
using libMesh::RealVectorValue;

namespace MetaPhysicL
{
template <typename U>
struct ReplaceAlgebraicType<libMesh::RealEigenVector, U>
{
  typedef U type;
};
}

/**
 * various MOOSE typedefs
 */
typedef Real PostprocessorValue;
typedef std::vector<Real> VectorPostprocessorValue;
typedef Real ScatterVectorPostprocessorValue;
typedef boundary_id_type BoundaryID;
typedef unsigned int InterfaceID;
typedef subdomain_id_type SubdomainID;
typedef unsigned int MooseObjectID;
typedef unsigned int THREAD_ID;
typedef unsigned int TagID;
typedef unsigned int TagTypeID;
typedef unsigned int PerfID;
typedef unsigned int InvalidSolutionID;
using RestartableDataMapName = std::string; // see MooseApp.h

typedef libMesh::StoredRange<std::vector<dof_id_type>::iterator, dof_id_type> NodeIdRange;
typedef libMesh::StoredRange<std::vector<const Elem *>::iterator, const Elem *>
    ConstElemPointerRange;

namespace Moose
{

/// This is used for places where we initialize some qp-sized data structures
/// that would end up being sized too small after the quadrature order gets
/// bumped (dynamically in-sim).  So for these cases, we just use this constant
/// to size those data structures overly large to accommodate rather than come
/// up with some overkill complex mechanism for dynamically resizing them.
/// Eventually, we may need or implement that more sophisticated mechanism and
/// will no longer need this.
constexpr std::size_t constMaxQpsPerElem = 1000;

// These are used by MooseVariableData and MooseVariableDataFV
enum SolutionState : int
{
  Current = 0,
  Old = 1,
  Older = 2,
  PreviousNL = -1
};

enum class SolutionIterationType : unsigned short
{
  Time = 0,
  Nonlinear = 1,
  FixedPoint = 2
};

// These are used by MooseVariableData and MooseVariableDataFV
enum GeometryType
{
  Volume,
  Face
};

template <typename OutputType>
struct ShapeType
{
  typedef OutputType type;
};
template <>
struct ShapeType<Eigen::Matrix<Real, Eigen::Dynamic, 1>>
{
  typedef Real type;
};

template <typename OutputType>
struct DOFType
{
  typedef OutputType type;
};
template <>
struct DOFType<RealVectorValue>
{
  typedef Real type;
};
} // namespace Moose

template <typename OutputType>
struct OutputTools
{
  typedef typename libMesh::TensorTools::IncrementRank<OutputType>::type OutputGradient;
  typedef typename libMesh::TensorTools::IncrementRank<OutputGradient>::type OutputSecond;
  typedef typename libMesh::TensorTools::DecrementRank<OutputType>::type OutputDivergence;

  typedef MooseArray<OutputType> VariableValue;
  typedef MooseArray<OutputGradient> VariableGradient;
  typedef MooseArray<OutputSecond> VariableSecond;
  typedef MooseArray<OutputType> VariableCurl;
  typedef MooseArray<OutputDivergence> VariableDivergence;

  typedef typename Moose::ShapeType<OutputType>::type OutputShape;
  typedef typename libMesh::TensorTools::IncrementRank<OutputShape>::type OutputShapeGradient;
  typedef typename libMesh::TensorTools::IncrementRank<OutputShapeGradient>::type OutputShapeSecond;
  typedef typename libMesh::TensorTools::DecrementRank<OutputShape>::type OutputShapeDivergence;

  typedef MooseArray<std::vector<OutputShape>> VariablePhiValue;
  typedef MooseArray<std::vector<OutputShapeGradient>> VariablePhiGradient;
  typedef MooseArray<std::vector<OutputShapeSecond>> VariablePhiSecond;
  typedef MooseArray<std::vector<OutputShape>> VariablePhiCurl;
  typedef MooseArray<std::vector<OutputShapeDivergence>> VariablePhiDivergence;

  typedef MooseArray<std::vector<OutputShape>> VariableTestValue;
  typedef MooseArray<std::vector<OutputShapeGradient>> VariableTestGradient;
  typedef MooseArray<std::vector<OutputShapeSecond>> VariableTestSecond;
  typedef MooseArray<std::vector<OutputShape>> VariableTestCurl;
  typedef MooseArray<std::vector<OutputShapeDivergence>> VariableTestDivergence;

  // DoF value type for the template class OutputType
  typedef typename Moose::DOFType<OutputType>::type OutputData;
  typedef MooseArray<OutputData> DoFValue;
  typedef OutputType OutputValue;
};

// types for standard variable
typedef typename OutputTools<Real>::VariableValue VariableValue;
typedef typename OutputTools<Real>::VariableGradient VariableGradient;
typedef typename OutputTools<Real>::VariableSecond VariableSecond;
typedef typename OutputTools<Real>::VariableCurl VariableCurl;
typedef typename OutputTools<Real>::VariableDivergence VariableDivergence;
typedef typename OutputTools<Real>::VariablePhiValue VariablePhiValue;
typedef typename OutputTools<Real>::VariablePhiGradient VariablePhiGradient;
typedef typename OutputTools<Real>::VariablePhiSecond VariablePhiSecond;
typedef typename OutputTools<Real>::VariablePhiCurl VariablePhiCurl;
typedef typename OutputTools<Real>::VariablePhiDivergence VariablePhiDivergence;
typedef typename OutputTools<Real>::VariableTestValue VariableTestValue;
typedef typename OutputTools<Real>::VariableTestGradient VariableTestGradient;
typedef typename OutputTools<Real>::VariableTestSecond VariableTestSecond;
typedef typename OutputTools<Real>::VariableTestCurl VariableTestCurl;
typedef typename OutputTools<Real>::VariableTestDivergence VariableTestDivergence;

// types for vector variable
typedef typename OutputTools<RealVectorValue>::VariableValue VectorVariableValue;
typedef typename OutputTools<RealVectorValue>::VariableGradient VectorVariableGradient;
typedef typename OutputTools<RealVectorValue>::VariableSecond VectorVariableSecond;
typedef typename OutputTools<RealVectorValue>::VariableCurl VectorVariableCurl;
typedef typename OutputTools<RealVectorValue>::VariableDivergence VectorVariableDivergence;
typedef typename OutputTools<RealVectorValue>::VariablePhiValue VectorVariablePhiValue;
typedef typename OutputTools<RealVectorValue>::VariablePhiGradient VectorVariablePhiGradient;
typedef typename OutputTools<RealVectorValue>::VariablePhiSecond VectorVariablePhiSecond;
typedef typename OutputTools<RealVectorValue>::VariablePhiCurl VectorVariablePhiCurl;
typedef typename OutputTools<RealVectorValue>::VariablePhiDivergence VectorVariablePhiDivergence;
typedef typename OutputTools<RealVectorValue>::VariableTestValue VectorVariableTestValue;
typedef typename OutputTools<RealVectorValue>::VariableTestGradient VectorVariableTestGradient;
typedef typename OutputTools<RealVectorValue>::VariableTestSecond VectorVariableTestSecond;
typedef typename OutputTools<RealVectorValue>::VariableTestCurl VectorVariableTestCurl;
typedef typename OutputTools<RealVectorValue>::VariableTestDivergence VectorVariableTestDivergence;

// types for array variable
typedef typename OutputTools<RealEigenVector>::VariableValue ArrayVariableValue;
typedef typename OutputTools<RealEigenVector>::VariableGradient ArrayVariableGradient;
typedef typename OutputTools<RealEigenVector>::VariableSecond ArrayVariableSecond;
typedef typename OutputTools<RealEigenVector>::VariableCurl ArrayVariableCurl;
typedef typename OutputTools<RealEigenVector>::VariableDivergence ArrayVariableDivergence;
typedef typename OutputTools<RealEigenVector>::VariablePhiValue ArrayVariablePhiValue;
typedef typename OutputTools<RealEigenVector>::VariablePhiGradient ArrayVariablePhiGradient;
typedef std::vector<std::vector<Eigen::Map<RealDIMValue>>> MappedArrayVariablePhiGradient;
typedef typename OutputTools<RealEigenVector>::VariablePhiSecond ArrayVariablePhiSecond;
typedef typename OutputTools<RealEigenVector>::VariablePhiCurl ArrayVariablePhiCurl;
typedef typename OutputTools<RealEigenVector>::VariablePhiDivergence ArrayVariablePhiDivergence;
typedef typename OutputTools<RealEigenVector>::VariableTestValue ArrayVariableTestValue;
typedef typename OutputTools<RealEigenVector>::VariableTestGradient ArrayVariableTestGradient;
typedef typename OutputTools<RealEigenVector>::VariableTestSecond ArrayVariableTestSecond;
typedef typename OutputTools<RealEigenVector>::VariableTestCurl ArrayVariableTestCurl;
typedef typename OutputTools<RealEigenVector>::VariableTestDivergence ArrayVariableTestDivergence;

/**
 * AD typedefs
 */
typedef libMesh::VectorValue<ADReal> ADRealVectorValue;
typedef ADRealVectorValue ADRealGradient;
typedef libMesh::VectorValue<ADReal> ADPoint;
typedef libMesh::TensorValue<ADReal> ADRealTensorValue;
typedef libMesh::DenseMatrix<ADReal> ADDenseMatrix;
typedef libMesh::DenseVector<ADReal> ADDenseVector;
typedef MooseArray<ADReal> ADVariableValue;
typedef MooseArray<ADRealVectorValue> ADVariableGradient;
typedef MooseArray<ADRealTensorValue> ADVariableSecond;
typedef MooseArray<ADRealVectorValue> ADVectorVariableValue;
typedef MooseArray<ADRealTensorValue> ADVectorVariableGradient;
typedef MooseArray<libMesh::TypeNTensor<3, ADReal>> ADVectorVariableSecond;
typedef MooseArray<ADRealVectorValue> ADVectorVariableCurl;

namespace Moose
{

// type conversion from regular to AD
template <typename T>
struct ADType
{
  // unless a specialization exists we assume there is no specific AD type
  typedef T type;
};

template <>
struct ADType<Real>
{
  typedef ADReal type;
};
template <>
struct ADType<ChainedReal>
{
  typedef ChainedADReal type;
};
template <>
struct ADType<Point>
{
  typedef ADPoint type;
};

template <>
struct ADType<RealVectorValue>
{
  typedef ADRealVectorValue type;
};
template <>
struct ADType<RankTwoTensor>
{
  typedef ADRankTwoTensor type;
};
template <>
struct ADType<RankThreeTensor>
{
  typedef ADRankThreeTensor type;
};
template <>
struct ADType<RankFourTensor>
{
  typedef ADRankFourTensor type;
};

template <>
struct ADType<SymmetricRankTwoTensor>
{
  typedef ADSymmetricRankTwoTensor type;
};
template <>
struct ADType<SymmetricRankFourTensor>
{
  typedef ADSymmetricRankFourTensor type;
};

template <template <typename T> class W, typename T>
struct ADType<W<T>>
{
  typedef W<typename ADType<T>::type> type;
};

template <typename T>
struct ADType<std::vector<T, std::allocator<T>>>
{
  typedef typename ADType<T>::type adT;
  typedef std::vector<adT, std::allocator<adT>> type;
};

template <typename T>
struct ADType<std::list<T, std::allocator<T>>>
{
  typedef typename ADType<T>::type adT;
  typedef std::list<adT, std::allocator<adT>> type;
};

template <typename T>
struct ADType<std::set<T, std::less<T>, std::allocator<T>>>
{
  typedef typename ADType<T>::type adT;
  typedef std::set<adT, std::less<adT>, std::allocator<adT>> type;
};

template <typename T>
struct ADType<DenseVector<T>>
{
  typedef DenseVector<typename ADType<T>::type> type;
};

template <typename T>
struct ADType<DenseMatrix<T>>
{
  typedef DenseMatrix<typename ADType<T>::type> type;
};

template <>
struct ADType<RealEigenVector>
{
  typedef RealEigenVector type;
};
template <>
struct ADType<VariableValue>
{
  typedef ADVariableValue type;
};
template <>
struct ADType<VariableGradient>
{
  typedef ADVariableGradient type;
};
template <>
struct ADType<VariableSecond>
{
  typedef ADVariableSecond type;
};

template <>
struct ADType<ADReal>
{
  typedef ADReal type;
};
template <>
struct ADType<ChainedADReal>
{
  typedef ChainedADReal type;
};
template <>
struct ADType<ADRankTwoTensor>
{
  typedef ADRankTwoTensor type;
};
template <>
struct ADType<ADRankThreeTensor>
{
  typedef ADRankThreeTensor type;
};
template <>
struct ADType<ADRankFourTensor>
{
  typedef ADRankFourTensor type;
};

template <>
struct ADType<ADSymmetricRankTwoTensor>
{
  typedef ADSymmetricRankTwoTensor type;
};
template <>
struct ADType<ADSymmetricRankFourTensor>
{
  typedef ADSymmetricRankFourTensor type;
};

template <>
struct ADType<ADVariableValue>
{
  typedef ADVariableValue type;
};
template <>
struct ADType<ADVariableGradient>
{
  typedef ADVariableGradient type;
};
template <>
struct ADType<ADVariableSecond>
{
  typedef ADVariableSecond type;
};

template <typename T>
struct IsADType
{
  static constexpr bool value = false;
};

template <>
struct IsADType<ADReal>
{
  static constexpr bool value = true;
};

template <>
struct IsADType<ADPoint>
{
  static constexpr bool value = true;
};

template <template <typename T, typename... Args> class W, typename T, typename... Args>
struct IsADType<W<T, Args...>>
{
  static constexpr bool value = IsADType<T>::value;
};

template <typename T, typename... Args>
struct IsADType<MetaPhysicL::DualNumber<T, Args...>>
{
  static constexpr bool value = true;
};

/**
 * This is a helper variable template for cases when we want to use a default compile-time
 * error with constexpr-based if conditions. The templating delays the triggering
 * of the static assertion until the template is instantiated.
 */
template <class... Ts>
constexpr std::false_type always_false{};

} // namespace Moose

/**
 * some AD typedefs for backwards compatibility
 */
typedef ADRealVectorValue ADRealVectorValue;
typedef ADRealTensorValue ADRealTensorValue;
typedef ADRealGradient ADRealGradient;

template <typename T>
using ADTemplateVariableValue =
    typename OutputTools<typename Moose::ADType<T>::type>::VariableValue;
template <typename T>
using ADTemplateVariableGradient =
    typename OutputTools<typename Moose::ADType<T>::type>::VariableGradient;
template <typename T>
using ADTemplateVariableSecond =
    typename OutputTools<typename Moose::ADType<T>::type>::VariableSecond;
template <typename T>
using ADTemplateVariableCurl = typename OutputTools<typename Moose::ADType<T>::type>::VariableCurl;

typedef VariableTestValue ADVariableTestValue;
typedef VariableTestGradient ADVariableTestGradient;
typedef VariableTestSecond ADVariableTestSecond;
typedef VectorVariableTestValue ADVectorVariableTestValue;
typedef VectorVariableTestGradient ADVectorVariableTestGradient;
typedef VectorVariableTestSecond ADVectorVariableTestSecond;

// We can  use the non-ad version for test values because these don't depend on the mesh
// displacements  (unless the location of the quadrature points depend on the mesh displacements...)
template <typename T>
using ADTemplateVariableTestValue = typename OutputTools<T>::VariableTestValue;
template <typename T>
using ADTemplateVariablePhiValue = typename OutputTools<T>::VariablePhiValue;

// We need to use the AD version for test gradients and seconds because these *do* depend on the
// mesh displacements
template <typename T>
using ADTemplateVariableTestGradient =
    typename OutputTools<typename Moose::ADType<T>::type>::VariableTestGradient;
template <typename T>
using ADTemplateVariableTestSecond =
    typename OutputTools<typename Moose::ADType<T>::type>::VariableTestSecond;
template <typename T>
using ADTemplateVariablePhiGradient =
    typename OutputTools<typename Moose::ADType<T>::type>::VariablePhiGradient;
using ADVariablePhiGradient = ADTemplateVariablePhiGradient<Real>;

// Templated typed to support is_ad templated classes
namespace Moose
{
template <typename T, bool is_ad>
using GenericType = typename std::conditional<is_ad, typename ADType<T>::type, T>::type;
}

template <bool is_ad>
using GenericReal = Moose::GenericType<Real, is_ad>;
template <bool is_ad>
using GenericChainedReal = Moose::GenericType<ChainedReal, is_ad>;
template <bool is_ad>
using GenericRealVectorValue = Moose::GenericType<RealVectorValue, is_ad>;
template <bool is_ad>
using GenericRealTensorValue = Moose::GenericType<RealTensorValue, is_ad>;
template <bool is_ad>
using GenericRankTwoTensor = Moose::GenericType<RankTwoTensor, is_ad>;
template <bool is_ad>
using GenericRankThreeTensor = Moose::GenericType<RankThreeTensor, is_ad>;
template <bool is_ad>
using GenericRankFourTensor = Moose::GenericType<RankFourTensor, is_ad>;
template <bool is_ad>
using GenericVariableValue = Moose::GenericType<VariableValue, is_ad>;
template <bool is_ad>
using GenericVectorVariableValue = Moose::GenericType<VectorVariableValue, is_ad>;
template <bool is_ad>
using GenericVariableGradient = Moose::GenericType<VariableGradient, is_ad>;
template <bool is_ad>
using GenericVariableSecond = Moose::GenericType<VariableSecond, is_ad>;
template <bool is_ad>
using GenericDenseVector = Moose::GenericType<DenseVector<Real>, is_ad>;
template <bool is_ad>
using GenericDenseMatrix = Moose::GenericType<DenseMatrix<Real>, is_ad>;

namespace Moose
{
extern const processor_id_type INVALID_PROCESSOR_ID;
extern const SubdomainID ANY_BLOCK_ID;
extern const SubdomainID INVALID_BLOCK_ID;
extern const BoundaryID ANY_BOUNDARY_ID;
extern const BoundaryID INVALID_BOUNDARY_ID;
extern const TagID INVALID_TAG_ID;
extern const TagTypeID INVALID_TAG_TYPE_ID;
const std::set<SubdomainID> EMPTY_BLOCK_IDS = {};
const std::set<BoundaryID> EMPTY_BOUNDARY_IDS = {};

/**
 * MaterialData types
 *
 * @see FEProblemBase, MaterialPropertyInterface
 */
enum MaterialDataType
{
  BLOCK_MATERIAL_DATA,
  BOUNDARY_MATERIAL_DATA,
  FACE_MATERIAL_DATA,
  NEIGHBOR_MATERIAL_DATA,
  INTERFACE_MATERIAL_DATA
};

/**
 * Flag for AuxKernel related execution type.
 */
enum AuxGroup
{
  PRE_IC = 0,
  PRE_AUX = 1,
  POST_AUX = 2,
  ALL = 3
};

/**
 * Framework-wide stuff
 */
enum VarKindType
{
  VAR_SOLVER,
  VAR_AUXILIARY,
  VAR_ANY
};

enum VarFieldType
{
  VAR_FIELD_STANDARD,
  VAR_FIELD_SCALAR,
  VAR_FIELD_VECTOR,
  VAR_FIELD_ARRAY,
  VAR_FIELD_ANY
};

enum CouplingType
{
  COUPLING_DIAG,
  COUPLING_FULL,
  COUPLING_CUSTOM
};

enum ConstraintSideType
{
  SIDE_PRIMARY,
  SIDE_SECONDARY
};

enum DGResidualType
{
  Element,
  Neighbor
};

enum DGJacobianType
{
  ElementElement,
  ElementNeighbor,
  NeighborElement,
  NeighborNeighbor
};

enum ConstraintType
{
  Secondary = Element,
  Primary = Neighbor
};

enum class ElementType : unsigned int
{
  Element = DGResidualType::Element,
  Neighbor = DGResidualType::Neighbor,
  Lower = DGResidualType::Neighbor + 1
};

enum class MortarType : unsigned int
{
  Secondary = static_cast<unsigned int>(Moose::ElementType::Element),
  Primary = static_cast<unsigned int>(Moose::ElementType::Neighbor),
  Lower = static_cast<unsigned int>(Moose::ElementType::Lower)
};

/**
 * The type of nonlinear computation being performed
 */
enum class ComputeType
{
  Residual,
  Jacobian,
  ResidualAndJacobian
};

/**
 * The filter type applied to a particular piece of "restartable" data. These filters
 * will be applied during deserialization to include or exclude data as appropriate.
 */
enum class RESTARTABLE_FILTER : unsigned char
{
  RECOVERABLE
};

enum ConstraintJacobianType
{
  SecondarySecondary = ElementElement,
  SecondaryPrimary = ElementNeighbor,
  PrimarySecondary = NeighborElement,
  PrimaryPrimary = NeighborNeighbor,
  LowerLower,
  LowerSecondary,
  LowerPrimary,
  SecondaryLower,
  PrimaryLower
};

enum CoordinateSystemType : int
{
  COORD_XYZ = 0,
  COORD_RZ,
  COORD_RSPHERICAL
};

/**
 * Preconditioning side
 */
enum PCSideType
{
  PCS_LEFT,
  PCS_RIGHT,
  PCS_SYMMETRIC,
  PCS_DEFAULT ///< Use whatever we have in PETSc
};

/**
 * Norm type for converge test
 */
enum MooseKSPNormType
{
  KSPN_NONE,
  KSPN_PRECONDITIONED,
  KSPN_UNPRECONDITIONED,
  KSPN_NATURAL,
  KSPN_DEFAULT ///< Use whatever we have in PETSc
};

/**
 * Type of the solve
 */
enum SolveType
{
  ST_PJFNK,  ///< Preconditioned Jacobian-Free Newton Krylov
  ST_JFNK,   ///< Jacobian-Free Newton Krylov
  ST_NEWTON, ///< Full Newton Solve
  ST_FD,     ///< Use finite differences to compute Jacobian
  ST_LINEAR  ///< Solving a linear problem
};

/**
 * Type of the eigen solve
 */
enum EigenSolveType
{
  EST_POWER,           ///< Power / Inverse / RQI
  EST_ARNOLDI,         ///< Arnoldi
  EST_KRYLOVSCHUR,     ///< Krylov-Schur
  EST_JACOBI_DAVIDSON, ///< Jacobi-Davidson
  EST_NONLINEAR_POWER, ///< Nonlinear inverse power
  EST_NEWTON, ///< Newton-based eigensolver with an assembled Jacobian matrix (fully coupled by default)
  EST_PJFNK,   ///< Preconditioned Jacobian-free Newton Krylov
  EST_PJFNKMO, ///< The same as PJFNK except that matrix-vector multiplication is employed to replace residual evaluation in linear solver
  EST_JFNK     ///< Jacobian-free Newton Krylov
};

/**
 * Type of the eigen problem
 */
enum EigenProblemType
{
  EPT_HERMITIAN,             ///< Hermitian
  EPT_NON_HERMITIAN,         ///< Non-Hermitian
  EPT_GEN_HERMITIAN,         ///< Generalized Hermitian
  EPT_GEN_INDEFINITE,        ///< Generalized Hermitian indefinite
  EPT_GEN_NON_HERMITIAN,     ///< Generalized Non-Hermitian
  EPT_POS_GEN_NON_HERMITIAN, ///< Generalized Non-Hermitian with positive (semi-)definite B
  EPT_SLEPC_DEFAULT          ///< use whatever SLPEC has by default
};

/**
 * Which eigen pairs
 */
enum WhichEigenPairs
{
  WEP_LARGEST_MAGNITUDE,  ///< largest magnitude
  WEP_SMALLEST_MAGNITUDE, ///< smallest magnitude
  WEP_LARGEST_REAL,       ///< largest real
  WEP_SMALLEST_REAL,      ///< smallest real
  WEP_LARGEST_IMAGINARY,  ///< largest imaginary
  WEP_SMALLEST_IMAGINARY, ///< smallest imaginary
  WEP_TARGET_MAGNITUDE,   ///< target magnitude
  WEP_TARGET_REAL,        ///< target real
  WEP_TARGET_IMAGINARY,   ///< target imaginary
  WEP_ALL_EIGENVALUES,    ///< all eigenvalues
  WEP_SLEPC_DEFAULT       ///< use whatever we have in SLEPC
};

/**
 * Time integrators
 */
enum TimeIntegratorType
{
  TI_IMPLICIT_EULER,
  TI_EXPLICIT_EULER,
  TI_CRANK_NICOLSON,
  TI_BDF2,
  TI_EXPLICIT_MIDPOINT,
  TI_LSTABLE_DIRK2,
  TI_EXPLICIT_TVD_RK_2,
  TI_NEWMARK_BETA
};

/**
 * Type of constraint formulation
 */
enum ConstraintFormulationType
{
  Penalty,
  Kinematic
};
/**
 * Type of the line search
 */
enum LineSearchType
{
  LS_INVALID, ///< means not set
  LS_DEFAULT,
  LS_NONE,
  LS_BASIC,
  LS_SHELL,
  LS_CONTACT,
  LS_PROJECT,
  LS_L2,
  LS_BT,
  LS_CP
};

/**
 * Type of the matrix-free finite-differencing parameter
 */
enum MffdType
{
  MFFD_INVALID, ///< means not set
  MFFD_WP,
  MFFD_DS
};

/**
 * Type of patch update strategy for modeling node-face constraints or contact
 */
enum PatchUpdateType
{
  Never,
  Always,
  Auto,
  Iteration
};

/**
 * Main types of Relationship Managers
 */
enum class RelationshipManagerType : unsigned char
{
  DEFAULT = 0,
  GEOMETRIC = 1 << 0,
  ALGEBRAIC = 1 << 1,
  COUPLING = 1 << 2
};

enum RMSystemType
{
  NONLINEAR,
  AUXILIARY,
  NONE
};

enum VectorTagType
{
  VECTOR_TAG_RESIDUAL = 0,
  VECTOR_TAG_SOLUTION = 1,
  VECTOR_TAG_ANY = 2
};

/**
 * The type for the callback to set RelationshipManager parameters
 */
typedef std::function<void(const InputParameters &, InputParameters &)>
    RelationshipManagerInputParameterCallback;

std::string stringify(const Moose::RelationshipManagerType & t);
std::string stringify(const Moose::TimeIntegratorType & t);

/**
 * Struct that all MOOSE derivative strings derive from
 */
struct DerivativeStringClass
{
};

} // namespace Moose

namespace libMesh
{
template <>
inline void
print_helper(std::ostream & os, const Moose::RelationshipManagerType * param)
{
  // Specialization so that we don't print out unprintable characters
  os << Moose::stringify(*param);
}
} // namespace libMesh

template <>
struct enable_bitmask_operators<Moose::RelationshipManagerType>
{
  static const bool enable = true;
};

/**
 * This Macro is used to generate std::string derived types useful for
 * strong type checking and special handling in the GUI.  It does not
 * extend std::string in any way so it is generally "safe"
 *
 * Be sure to use the DerivativeStringToJSON macro for new types in
 * MooseTypes.C to also define to_json for each
 */
#define MooseDerivativeStringClass(TheName)                                                        \
  class TheName : public std::string, public Moose::DerivativeStringClass                          \
  {                                                                                                \
  public:                                                                                          \
    TheName() : std::string() {}                                                                   \
    TheName(const std::string & str) : std::string(str) {}                                         \
    TheName(const std::string & str, size_t pos, size_t n = npos) : std::string(str, pos, n) {}    \
    TheName(const char * s, size_t n) : std::string(s, n) {}                                       \
    TheName(const char * s) : std::string(s) {}                                                    \
    TheName(size_t n, char c) : std::string(n, c) {}                                               \
  };                                                                                               \
  namespace nlohmann                                                                               \
  {                                                                                                \
  template <>                                                                                      \
  struct adl_serializer<TheName>                                                                   \
  {                                                                                                \
    static void to_json(json & j, const TheName & v);                                              \
  };                                                                                               \
  }                                                                                                \
  static_assert(true, "")

// Instantiate new Types

/// This type is for expected (i.e. input) file names or paths that your simulation needs.
/// If relative types are assigned to this type, they are replaced with an absolute path
/// that is relative to the context of the parameter (usually the input file).
MooseDerivativeStringClass(FileName);

/// Similar to FileName but without an extension
MooseDerivativeStringClass(FileNameNoExtension);

/// This type is for expected filenames that should be relative and will not have their
/// values set to absolute paths like FileName
MooseDerivativeStringClass(RelativeFileName);

/// This type is for files used in the DataFileInterface, which enables searching of files
/// within the registered data directory
MooseDerivativeStringClass(DataFileName);

/// This type is similar to "FileName", but is used to further filter file dialogs on known file mesh types
MooseDerivativeStringClass(MeshFileName);

/// This type is similar to "FileName", but is used to further filter file dialogs on known matrix file types
MooseDerivativeStringClass(MatrixFileName);

/// This type is for output file base
MooseDerivativeStringClass(OutFileBase);

/// This type is used for objects that expect nonlinear variable names (i.e. Kernels, BCs)
MooseDerivativeStringClass(NonlinearVariableName);

/// This type is used for objects that expect linear variable names (i.e. LinearFVKernels, LinearFVBCs)
MooseDerivativeStringClass(LinearVariableName);

/// This type is used for objects that expect linear or nonlinear solver variable names
MooseDerivativeStringClass(SolverVariableName);

/// This type is used for objects that expect Auxiliary variable names (i.e. AuxKernels, AuxBCs)
MooseDerivativeStringClass(AuxVariableName);

/// This type is used for objects that expect either Solver or Auxiliary Variables such as postprocessors
MooseDerivativeStringClass(VariableName);

/// This type is used for objects that expect Boundary Names/Ids read from or generated on the current mesh
MooseDerivativeStringClass(BoundaryName);

/// This type is similar to BoundaryName but is used for "blocks" or subdomains in the current mesh
MooseDerivativeStringClass(SubdomainName);

/// This type is used for objects that expect Postprocessor objects
MooseDerivativeStringClass(PostprocessorName);

/// This type is used for objects that expect VectorPostprocessor objects
MooseDerivativeStringClass(VectorPostprocessorName);

/// This type is used for objects that expect MeshDivision objects
MooseDerivativeStringClass(MeshDivisionName);

/// This type is used for objects that expect Moose Function objects
MooseDerivativeStringClass(FunctionName);

/// This type is used for objects that expect Moose Distribution objects
MooseDerivativeStringClass(DistributionName);

/// This type is used for objects that expect Moose Sampler objects
MooseDerivativeStringClass(SamplerName);

/// This type is used for objects that expect "UserObject" names
MooseDerivativeStringClass(UserObjectName);

/// This type is used for objects that expect an Indicator object name
MooseDerivativeStringClass(IndicatorName);

/// This type is used for objects that expect an Marker object name
MooseDerivativeStringClass(MarkerName);

/// This type is used for objects that expect an MultiApp object name
MooseDerivativeStringClass(MultiAppName);

/// Used for objects the require Output object names
MooseDerivativeStringClass(OutputName);

/// Used for objects that expect MaterialProperty names
MooseDerivativeStringClass(MaterialPropertyName);

/// Used for objects that expect Moose::Functor names
MooseDerivativeStringClass(MooseFunctorName);

/// User for accessing Material objects
MooseDerivativeStringClass(MaterialName);

/// Tag Name
MooseDerivativeStringClass(TagName);

/// Name of MeshGenerators
MooseDerivativeStringClass(MeshGeneratorName);

/// Name of extra element IDs
MooseDerivativeStringClass(ExtraElementIDName);

/// Name of a Reporter Value, second argument to ReporterName (see Reporter.h)
MooseDerivativeStringClass(ReporterValueName);

/// Name of a Component object
MooseDerivativeStringClass(ComponentName);

/// Name of a Physics object
MooseDerivativeStringClass(PhysicsName);

/// Name of a Positions object
MooseDerivativeStringClass(PositionsName);

/// Name of a Times object
MooseDerivativeStringClass(TimesName);

/// Name of an Executor.  Used for inputs to Executors
MooseDerivativeStringClass(ExecutorName);

/// ParsedFunction/ParsedMaterial etc. FParser expression
MooseDerivativeStringClass(ParsedFunctionExpression);

/// System name support of multiple nonlinear systems on the same mesh
MooseDerivativeStringClass(NonlinearSystemName);

/// Name of a Convergence object
MooseDerivativeStringClass(ConvergenceName);

/// System name support of multiple linear systems on the same mesh
MooseDerivativeStringClass(LinearSystemName);

/// Name of a system which either be linear or nonlinear
MooseDerivativeStringClass(SolverSystemName);

/// Command line argument, specialized to handle quotes in vector arguments
MooseDerivativeStringClass(CLIArgString);

#ifdef MOOSE_MFEM_ENABLED
/**
 * Coefficients used in input for MFEM residual objects
 */
///@{
MooseDerivativeStringClass(MFEMScalarCoefficientName);
MooseDerivativeStringClass(MFEMVectorCoefficientName);
MooseDerivativeStringClass(MFEMMatrixCoefficientName);
///@}
#endif
/**
 * additional MOOSE typedefs
 */
typedef std::vector<VariableName> CoupledName;

namespace Moose
{
extern const TagName SOLUTION_TAG;
extern const TagName OLD_SOLUTION_TAG;
extern const TagName OLDER_SOLUTION_TAG;
extern const TagName PREVIOUS_NL_SOLUTION_TAG;
extern const TagName PREVIOUS_FP_SOLUTION_TAG;
extern const TagName SOLUTION_DOT_TAG;
extern const TagName SOLUTION_DOTDOT_TAG;

enum class FEBackend
{
  LibMesh
#ifdef MOOSE_MFEM_ENABLED
  ,
  MFEM
#endif
};

#ifdef MOOSE_KOKKOS_ENABLED
namespace Kokkos
{
// Passkey for calling special constructors for functor copy
class FunctorCopy
{
  friend class ResidualObject;
  friend class KernelBase;
  friend class NodalKernelBase;
  friend class BoundaryCondition;
  friend class IntegratedBCBase;
  friend class NodalBCBase;
  friend class MaterialBase;
  friend class Material;
  friend class AuxKernel;

  FunctorCopy() = default;
  FunctorCopy(const FunctorCopy &) = delete;
  FunctorCopy(FunctorCopy &&) = delete;
};
}
#endif
}

/// macros for adding Tensor index enums locally
#define usingTensorIndices(...)                                                                    \
  enum                                                                                             \
  {                                                                                                \
    __VA_ARGS__                                                                                    \
  }

Design
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