Method get_character

include/jwt/json/json.hpp:4851–4863

        : current(std::move(first)), end(std::move(last)) {}

    typename std::char_traits<char_type>::int_type get_character()
    {
        if (JSON_HEDLEY_LIKELY(current != end))
        {
            auto result = std::char_traits<char_type>::to_int_type(*current);
            std::advance(current, 1);
            return result;
        }
        else
        {
            return std::char_traits<char_type>::eof();
        }
    }

  private:
    IteratorType current;