FunctionContainer.hpp

#pragma once
#include "EASTL/initializer_list.h"
#include "EASTL/string.h"
#include "EASTL/any.h"
#include "EASTL/unordered_map.h"
#include "EASTL/functional.h"
#include "..\IO\Logger.hpp"
#include <source_location>
 
namespace mce {
    class FunctionContainer {
    public:
        FunctionContainer() = default;

        FunctionContainer(QEventBus& qBus, std::initializer_list<std::pair<eastl::string, eastl::any>> initlist);

        template<typename Functor>
        void addFunction(const eastl::string& name, Functor functor);

        template<typename Return, typename... Arguments>
        Return callFunction(const eastl::string& name, Arguments&&... args);

        bool findFunction(const eastl::string& name);

        template<typename Return, typename... Arguments>
        eastl::function<Return(Arguments...)> operator[](const eastl::string& name);

        template<typename Return, typename... Arguments>
        eastl::function<Return(Arguments...)> getFunction(const eastl::string& name);
    private:
        eastl::unordered_map<eastl::string, eastl::any> functions;
        QEventBus& qBus;
    };
 
    // Template implementations
    template<typename Functor>
    inline void FunctionContainer::addFunction(const eastl::string& name, Functor functor) {
        FunctionContainer::functions[name] = functor;
    }

    template<typename Return, typename ...Arguments>
    inline Return FunctionContainer::callFunction(const eastl::string& name, Arguments && ...args) {
        if (FunctionContainer::functions.find(name) != FunctionContainer::functions.end()) {
            auto& func = FunctionContainer::functions[name];
            auto castedFunc = eastl::any_cast<eastl::function<Return(Arguments...)>>(func);
            return castedFunc(eastl::forward<Arguments>(args)...);
        }
        else {
            MCE_ERROR("Function \"{}\" not found! File:", name);
        }
    }

    template<typename Return, typename ...Arguments>
    inline eastl::function<Return(Arguments...)> FunctionContainer::operator[](const eastl::string& name) {
        if (FunctionContainer::functions.find(name) != FunctionContainer::functions.end()) {
            return eastl::any_cast<eastl::function<Return(Arguments...)>>(FunctionContainer::functions[name]);
        }
        else {
            MCE_ERROR("Function \"{}\" not found! File:", name);
            return nullptr;
        }
    }

    template<typename Return, typename ...Arguments>
    inline eastl::function<Return(Arguments...)> FunctionContainer::getFunction(const eastl::string& name) {
        if (FunctionContainer::functions.find(name) != FunctionContainer::functions.end()) {
            return eastl::any_cast<eastl::function<Return(Arguments...)>>(FunctionContainer::functions[name]);
        }
        else { 
            MCE_ERROR("Function \"{}\" not found! File:", name);
            return nullptr;
        }
    }
}