MultiColumnCSVScalar.h

// Copyright 2024, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
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#ifdef NEML2_HAS_CSV
 
#pragma once
 
#include "csvparser/csv.hpp"
#include "neml2/user_tensors/UserTensorBase.h"
#include "neml2/tensors/Scalar.h"
 
namespace neml2
{
class MultiColumnCSVScalar : public UserTensorBase<Scalar>
{
public:
  static OptionSet expected_options();
 
  MultiColumnCSVScalar(const OptionSet & options);
 
protected:
  Scalar make() const override;
 
private:
  csv::CSVFormat parse_format() const;
 
  std::vector<unsigned int> parse_indices(const csv::CSVReader & csv) const;
 
  void read_all(csv::CSVReader & csv,
                std::vector<double> & vals,
                std::size_t & nrow,
                std::size_t & ncol) const;
 
  void read_by_indices(csv::CSVReader & csv,
                       const std::vector<unsigned int> & indices,
                       std::vector<double> & vals,
                       std::size_t & nrow,
                       std::size_t & ncol) const;
};
} // namespace neml2
 
#endif