Align equations on equal and vertical bars between equals

Question

I am aligning some equations using the \begin{aligned} from amsmath package. This aligns the equations using the = as alignment point, which is nice, but I also want a vertical line drawn between every two = symbols. Essentially, I want to achieve this:

Is there a way to do this? Many thanks

EDIT: here is the code I use now:

\documentclass{article}
\usepackage{amsmath,amssymb,amsthm}
\begin{document}
\begin{align*} 
x &= 3+2 \\ 
  &= 5
\end{align*}
\end{document}

Answer 1

Here are two possibilities: one based on pstricks, which allows for more complex ways to link two = signs (or actually any two elements in a formula), another with standard tools (\stackrel and \smash) which is fine in this case:

\documentclass[11pt, svgnames]{article}

\usepackage{mathtools}
\newcommand*{\cvrule}{\smash{\color{SeaGreen}\rule{0.4pt}{2ex}}}
\usepackage{pst-node, auto-pst-pdf}

\begin{document}

\begin{postscript}
\begin{alignat*}{2}
x & \stackrel{\pnode{E1}}{=} 3 + 2 &\hspace{3em} x & = 3 + 2\\
  & \stackrel{\pnode{E2}}{=}5 & & \stackrel{\cvrule}{=} 5
\end{alignat*}
\ncline[linewidth=0.4pt, linecolor=Tomato, nodesepA=1.5ex]{E1}{E2}
\end{postscript}

\end{document}