LabeledAxisAccessor.h

// Copyright 2023, UChicago Argonne, LLC
// All Rights Reserved
// Software Name: NEML2 -- the New Engineering material Model Library, version 2
// By: Argonne National Laboratory
// OPEN SOURCE LICENSE (MIT)
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#pragma once
 
#include <vector>
#include <iostream>
 
namespace neml2
{
class LabeledAxisAccessor
{
public:
  LabeledAxisAccessor() = default;
 
  template <typename... S>
  LabeledAxisAccessor(const char * name, S &&... names)
  {
    validate_item_name(name);
    _item_names.push_back(name);
 
    (validate_item_name(names), ...);
    (_item_names.push_back(names), ...);
  }
 
  template <typename... S>
  LabeledAxisAccessor(const std::string & name, S &&... names)
  {
    validate_item_name(name);
    _item_names.push_back(name);
 
    (validate_item_name(names), ...);
    (_item_names.push_back(names), ...);
  }
 
  LabeledAxisAccessor(const std::vector<std::string> & names);
 
  LabeledAxisAccessor(const LabeledAxisAccessor & other);
 
  LabeledAxisAccessor & operator=(const LabeledAxisAccessor & other);
 
  operator std::vector<std::string>() const;
 
  const std::vector<std::string> & vec() const { return _item_names; }
 
  bool empty() const;
 
  size_t size() const;
 
  LabeledAxisAccessor with_suffix(const std::string & suffix) const;
 
  LabeledAxisAccessor append(const LabeledAxisAccessor & axis) const;
 
  LabeledAxisAccessor on(const LabeledAxisAccessor & axis) const;
 
  LabeledAxisAccessor slice(size_t n) const;
 
  LabeledAxisAccessor slice(size_t n1, size_t n2) const;
 
  bool start_with(const LabeledAxisAccessor & axis) const;
 
private:
  void validate_item_name(const std::string &) const;
 
  std::vector<std::string> _item_names;
};
 
bool operator==(const LabeledAxisAccessor & a, const LabeledAxisAccessor & b);
 
bool operator!=(const LabeledAxisAccessor & a, const LabeledAxisAccessor & b);
 
bool operator<(const LabeledAxisAccessor & a, const LabeledAxisAccessor & b);
 
std::ostream & operator<<(std::ostream & os, const LabeledAxisAccessor & accessor);
} // namespace neml2