BooleanComboClusteringUserObject.h

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#pragma once

#include "GeneralUserObject.h"
#include <unordered_map>

class ClusteringUserObjectBase;

class BooleanComboClusteringUserObject : public GeneralUserObject
{
public:
  static InputParameters validParams();
  BooleanComboClusteringUserObject(const InputParameters & parameters);

  virtual void execute() override;
  virtual void initialize() override {};
  virtual void finalize() override {};

private:
  int getExtraIntegerScore(libMesh::Elem * elem) const;

  void reversePolishNotation(const std::vector<std::string> & expression);

  bool belongsToCluster(libMesh::Elem * base_element, libMesh::Elem * neighbor_elem);

  void findCluster();

  void resetExtraInteger();

  void initializeUserObjects();

  const ExtraElementIDName & _id_name;

  libMesh::MeshBase & _mesh;

  unsigned int _extra_integer_index;

  std::unordered_map<std::string, const ClusteringUserObjectBase *> _clustering_user_objects;

  std::vector<std::string> _output_stack;

  static std::unordered_map<std::string, int> _precedence;

  static constexpr int NOT_VISITED = -1;
  static constexpr std::string_view _left_parenthesis = "(";
  static constexpr std::string_view _right_parenthesis = ")";
};