/*
 * FunctorLazyFast.hpp
 *
 *  Created on: 17 θών. 2020 γ.
 *      Author: LeonidTitov
 */

#ifndef UMLIBRARY_SYSTEMIC_FUNCTORLAZYFAST_HPP_
#define UMLIBRARY_SYSTEMIC_FUNCTORLAZYFAST_HPP_

#include "IFunctor.hh"

namespace systemic { namespace detail {

template<typename Object, typename Return, typename ... Args>
class FunctorLazyFast : public IFunctor<Return, Args...> {
private:
    Object & object;
    Return (Object::* const pf)(Args...);
public:
    typedef Return (Object::* Function)(Args...);

    FunctorLazyFast( Object & obj, Function pf );

    Return operator()( Args ... args );

    FunctorLazyFast(const FunctorLazyFast &) = delete;
    FunctorLazyFast & operator=(const FunctorLazyFast &) = delete;

};

}
}

template<typename Object, typename Return, typename ... Args>
inline systemic::detail::FunctorLazyFast<Object, Return, Args...>::FunctorLazyFast(
        Object & obj, Return (Object::* const pf)(Args...) ) : object(obj), pf(pf) {}

template<typename Object, typename Return, typename ... Args>
inline Return systemic::detail::FunctorLazyFast<Object, Return, Args...>::operator ()(
        Args ... args) {

    return (object.*pf)( args... );

}

#endif /* UMLIBRARY_SYSTEMIC_FUNCTORLAZYFAST_HPP_ */