\documentclass{article}
\usepackage{hyperref}
\newcommand*{\x}[1]{%
  \addtocontents{toc}{\protect\hypersetup{linktoc=#1}}%
}
\begin{document}
\tableofcontents
\section{Default}
\x{none}
\section{None}
\x{section}
\section{Section}
\x{page}
\section{Page}
\x{all}
\section{All}
\x{warning}
\end{document}