#ifndef VOL_RESULT_H
#define VOL_RESULT_H

template <typename T, typename E>
class result;

template <typename E>
class error {
    template <typename, typename>
    friend class result;

private:
    E err;

public:
    error(E err) : err(err) {};
};

template <typename T, typename E>
class result {
private:
    bool is_ok;
    T value;
    E err;

public:
    result(T val) : value(val), is_ok(true)
    {
    }
    result(error<E> err) : err(err.err), is_ok(false)
    {
    }
    ~result() = default;
    operator bool() const;
    bool ok() const;
    T* operator*();
    T* operator->();
    T unwrap();
    const T unwrap() const;
};

#endif /* VOL_RESULT_H */