registry.h

Go to the documentation of this file.

//   OpenNN: Open Neural Networks Library
//   www.opennn.net
//
//   R E G I S T R Y   C L A S S   H E A D E R
//
//   Artificial Intelligence Techniques SL
//   artelnics@artelnics.com
 
#pragma once
 
#include <string>
#include <functional>
#include <memory>
#include <stdexcept>
#include <unordered_map>
#include <utility>
#include <vector>
#include <format>
 
namespace opennn
{
 
template<typename T>
class Registry
{
public:
 
    using Creator = function<unique_ptr<T>()>;
 
    [[nodiscard]] static Registry& instance()
    {
        static Registry registry;
        return registry;
    }
 
    void register_component(const string& name, Creator creator)
    {
        creators[name] = move(creator);
    }
 
    [[nodiscard]] unique_ptr<T> create(const string& name) const
    {
        auto it = creators.find(name);
 
        if (it == creators.end())
            throw runtime_error(format("Component not found: {}", name));
 
        return it->second();
 
    }
 
    [[nodiscard]] vector<string> registered_names() const
    {
        vector<string> names;
 
        for (const auto& pair : creators)
            names.push_back(pair.first);
 
        return names;
    }
 
private:
    unordered_map<string, Creator> creators;
};
 
#define REGISTER(BASE, CLASS, NAME) \
namespace { \
    const bool CLASS##_registered = []() { \
              Registry<BASE>::instance().register_component(NAME, []() { \
                          return make_unique<CLASS>(); \
                  }); \
              return true; \
      }(); \
}
 
void register_classes();
 
}
 
// OpenNN: Open Neural Networks Library.
// Copyright(C) 2005-2026 Artificial Intelligence Techniques, SL.
// Licensed under the GNU Lesser General Public License v2.1 or later.