ADArrayNodalKernel.h

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//* 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 "NodalKernelBase.h"
#include "MooseVariableInterface.h"

class ADArrayNodalKernel : public NodalKernelBase, public MooseVariableInterface<RealEigenVector>
{
public:
  static InputParameters validParams();

  ADArrayNodalKernel(const InputParameters & parameters);

  virtual void computeResidual() override;

  virtual void computeJacobian() override;

  virtual void computeOffDiagJacobian(unsigned int jvar) override;

  const MooseVariableFE<RealEigenVector> & variable() const override { return _var; }

  virtual void jacobianSetup() override { _my_node = nullptr; }

protected:
  virtual void computeQpResidual(ADRealEigenVector & residual) = 0;

  virtual RealEigenVector computeQpJacobian()
  {
    mooseError("I'm an AD object, so computeQpJacobian should never be called");
  }

  MooseVariableFE<RealEigenVector> & _var;

  const ADArrayVariableValue & _u;

  const unsigned int _count;

private:
  ADRealEigenVector _work_vector;

  const Node * _my_node = nullptr;
};