ConfigInstanceAPI.hpp

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/*
 * SNode.C - A Slim Toolkit for Network Communication
 * Copyright (C) Volker Christian <me@vchrist.at>
 *               2020, 2021, 2022, 2023, 2024, 2025, 2026
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 * This program is free software: you can redistribute it and/or modify
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 */
 
/*
 * MIT License
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#ifndef NET_CONFIG_CONFIGINSTANCE_HPP
#define NET_CONFIG_CONFIGINSTANCE_HPP
 
#ifndef DOXYGEN_SHOULD_SKIP_THIS
 
#include "net/config/ConfigInstance.h" // IWYU pragma: export
#include "utils/Config.h"              // IWYU pragma: export
#include "utils/ConfigApp.h"           // IWYU pragma: export
 
#include <cstdint>
#include <memory> // IWYU pragma: export
#include <string>
 
#endif /* DOXYGEN_SHOULD_SKIP_THIS */
 
namespace net::config {
 
    template <typename T>
    std::shared_ptr<utils::AppWithPtr<T>> Instance(const std::string& name, const std::string& description, T* section) {
        std::shared_ptr<utils::AppWithPtr<T>> instanceSc = std::make_shared<utils::AppWithPtr<T>>(description, name, section);
 
        instanceSc->option_defaults()->take_last();
        instanceSc->formatter(utils::Config::sectionFormatter);
        instanceSc->option_defaults()->group(instanceSc->get_formatter()->get_label("Nonpersistent Options"));
 
        return instanceSc;
    }
 
    template <typename SectionType>
    SectionType* ConfigInstance::getSection() const {
        utils::AppWithPtr<SectionType>* sectionApp =
            dynamic_cast<utils::AppWithPtr<SectionType>*>(instanceSc->get_subcommand_no_throw(std::string(SectionType::name)));
 
        return sectionApp != nullptr ? sectionApp->getPtr() : nullptr;
    }
 
    template <typename ConcreteConfigSection, typename... Args>
    ConcreteConfigSection* ConfigInstance::addSection(Args&&... args) {
        return dynamic_cast<ConcreteConfigSection*>(addSection(std::make_shared<ConcreteConfigSection>(this, std::forward<Args>(args)...)));
    }
 
} // namespace net::config
 
namespace utils {
 
    template <typename T>
    T* Config::getInstance() {
        auto* appWithPtr = app->get_subcommand_no_throw(std::string(T::name));
 
        AppWithPtr<T>* instanceApp = dynamic_cast<utils::AppWithPtr<T>*>(appWithPtr);
 
        return instanceApp != nullptr ? instanceApp->getPtr() : nullptr;
    }
 
    template <typename T>
    T* Config::addInstance() {
        return std::static_pointer_cast<T>(configSections.emplace_back(std::make_shared<T>())).get();
    }
 
} // namespace utils
 
#endif // NET_CONFIG_CONFIGINSTANCE_HPP