ModuleFactory.h

#pragma once
#include "TypeFactory.h"
class Module;
class ModuleFactory
{
    TypeFactory<Module*, size_t, boost::function<Module*()> > factory;
    using id_and_hash = std::pair<int, size_t>;
    boost::container::flat_map<id_and_hash, Module*> modules_map;
public:
    Module *removeModule(int id, size_t type_id);
    void registerType(size_t type_id, boost::function<Module*()> make);
    template<class ...args>
    Module *createModule(int id, size_t type_id, args&&... a) {
        auto idnhash = std::make_pair(id, type_id);
        auto it = modules_map.find(idnhash);
        if (it != modules_map.end())
            return it->second;
        Module* module = factory.create(type_id, a...);
        if (module)
            modules_map.insert(std::make_pair(idnhash, module));
        return module;
    }
};