channel.h

#ifndef LSST_GAUSS2D_FIT_CHANNEL_H
#define LSST_GAUSS2D_FIT_CHANNEL_H
 
#include <iostream>
#include <functional>
#include <map>
#include <memory>
#include <set>
#include <stdexcept>
#include <string>
 
#include "lsst/gauss2d/object.h"
 
#include "util.h"
 
namespace lsst::gauss2d::fit {

class Channel : public Object {
public:
    typedef std::map<std::string, std::shared_ptr<const Channel>> Registry;
 
    Channel(const Channel &) = delete;
    Channel &operator=(const Channel &) = delete;
    static void erase(std::string name);

    static const std::shared_ptr<const Channel> find_channel(std::string name);

    static const std::shared_ptr<const Channel> get_channel(std::string name);
 
    static std::vector<std::shared_ptr<const Channel>> get_channels();
 
    inline static const std::string NAME_NONE = "None";
 
    const std::string name;
 
    static const std::shared_ptr<const Channel> NONE_PTR();
    static const Channel &NONE();
 
    std::string repr(bool name_keywords = false,
                     std::string_view namespace_separator = Object::CC_NAMESPACE_SEPARATOR) const override;
    std::string str() const override;

    static std::shared_ptr<Channel> make(std::string name);
    static const std::shared_ptr<const Channel> make_const(std::string name);
 
    // TODO: Figure out why tests compile but do not run without this operator.
    // Until then, do NOT remove.
    const bool operator<(const Channel &c) const;
    const bool operator==(const Channel &c) const;
    const bool operator!=(const Channel &c) const;
 
private:
    explicit Channel(std::string name);
 
    struct Shared_enabler;
};
 
inline bool operator<(const std::reference_wrapper<const Channel> &lhs,
                      const std::reference_wrapper<const Channel> &rhs) {
    return (lhs.get() < rhs.get());
}
 
inline bool operator==(const std::reference_wrapper<const Channel> &lhs,
                       const std::reference_wrapper<const Channel> &rhs) {
    return (lhs.get() == rhs.get());
}
 
}  // namespace lsst::gauss2d::fit
 
#endif