/*
 * MemberFuntion.hpp
 *
 *  Created on: 4 мар. 2020 г.
 *      Author: titov
 */

#ifndef UMLIBRARY_SYSTEMIC_MEMBERFUNTION_HPP_
#define UMLIBRARY_SYSTEMIC_MEMBERFUNTION_HPP_

#include "IFunctor.hh"
#include "IValue.hpp"

namespace systemic { namespace detail {

template<typename T, typename ResultType, ResultType (T::* pf)()>
struct MemberFuntion : public systemic::IFunctor<ResultType> {
private:
    T & object;

public:
    MemberFuntion( T & obj );
    ResultType operator()() final;

    MemberFuntion(const MemberFuntion &) = delete;
    MemberFuntion & operator=(const MemberFuntion &) = delete;
};

template<typename T, typename ResultType, typename ... Args>
struct MemberArgsFuntion : public systemic::IFunctor<ResultType, Args ...> {
private:
    T & object;
    ResultType ( T::* const pf )( Args ... );
public:
    typedef systemic::IFunctor<ResultType, Args ...> FunctorInterface;

    MemberArgsFuntion( T & obj, ResultType ( T::* method )( Args ... ) );
    ResultType operator()( Args ... ) final;

    MemberArgsFuntion(const MemberArgsFuntion &) = delete;
    MemberArgsFuntion & operator=(const MemberArgsFuntion &) = delete;
};



template<typename T, typename ResultType, void (T::* pf)()>
struct MemberFuntionExternalResult : public systemic::IFunctor<ResultType> {
private:
    T & object;
    IValue<ResultType> & result;

public:
    MemberFuntionExternalResult( T & obj, IValue<ResultType> & result );
    ResultType operator()() final;

    MemberFuntionExternalResult(const MemberFuntionExternalResult &) = delete;
    MemberFuntionExternalResult & operator=(const MemberFuntionExternalResult &) = delete;
    ~MemberFuntionExternalResult() = default;
};

}
}

template<typename T, typename ResultType, ResultType (T::*pf)()>
inline systemic::detail::MemberFuntion<T, ResultType, pf>::MemberFuntion( T & obj) : object(obj) {}

template<typename T, typename ResultType, ResultType (T::*pf)()>
inline ResultType systemic::detail::MemberFuntion<T, ResultType, pf>::operator()() {

    return (object.*pf)();

}

template<typename T, typename ResultType, void (T::*pf)()>
inline systemic::detail::MemberFuntionExternalResult<T, ResultType, pf>::MemberFuntionExternalResult(
        T & obj, IValue<ResultType> & result) : object(obj), result(result) {}

template<typename T, typename ResultType, void (T::*pf)()>
inline ResultType systemic::detail::MemberFuntionExternalResult<T, ResultType,pf>::operator()() {

    return (object.*pf)(), result;

}

template<typename T, typename ResultType, typename ... Args>
inline systemic::detail::MemberArgsFuntion<T, ResultType, Args...>::MemberArgsFuntion(
        T & obj, ResultType ( T::* method )( Args ... ) ) : object(obj), pf(method) {}

template<typename T, typename ResultType, typename ... Args>
inline ResultType systemic::detail::MemberArgsFuntion<T, ResultType, Args...>::operator()( Args ... args ) {

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

}

#endif /* UMLIBRARY_SYSTEMIC_MEMBERFUNTION_HPP_ */