category_set.h

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#if !defined(VITA_CATEGORY_SET_H)
#define      VITA_CATEGORY_SET_H
 
#include <iostream>
#include <set>
#include <string>
 
#include "kernel/common.h"
#include "kernel/value.h"
#include "kernel/gp/src/dataframe.h"
 
namespace vita
{
 
enum class typing {weak, strong};
 
struct category_info
{
  static const category_info null;
 
  category_t category = undefined_category;
  domain_t     domain =             d_void;
  std::string    name =                 {};
};
 
std::ostream &operator<<(std::ostream &, const category_info &);
bool operator==(const category_info &, const category_info &);
 
class category_set
{
public:
  class const_iterator;
 
  explicit category_set(const dataframe::columns_info &, typing = typing::weak);
 
  const category_info &category(category_t) const;
  const category_info &column(std::size_t) const;
  const category_info &column(const std::string &) const;
 
  std::set<category_t> used_categories() const;
 
  auto begin() const { return columns_.begin(); }
  auto end() const { return columns_.end(); }
 
  bool is_valid() const;
 
private:
  std::vector<category_info> columns_;
};  // class category_set
 
}  // namespace vita
#endif  // include guard