Create List of Listings like List of Figures

Question

I'm trying to make a List of Listings that appears in the Table of Contents like List of Figures. I'm using a class that was provided for me, and I tried editing it but it isn't working.

This is what the List of Figures looks like:

But this is what the attempted List of Listings looks like:

For some reason, it's being treated as if it is a Table of Contents.

Here is the code in the .cls file:

%
%   List of figures
%
\def\textofLoF#1{\gdef\@textofLoF{#1}}  \textofLoF{List of Figures}
\def\listoffigures{\chapter*{\@textofLoF\@mkboth{}{}}
   \thispagestyle{plain}
   \addcontentsline{toc}{chapter}{\protect\@textofLoF}
   \hbox to\textwidth{Figure Number \hfill Page}
   {\let\footnotemark\relax  % in case one is in the title
    \uwsinglespace
   \@starttoc{lof}
    }
   }
%
%   List of listings
%
\def\textofLoL#1{\gdef\@textofLoL{#1}}  \textofLoL{List of Listings}
\def\lstlistoflistings{\chapter*{\@textofLoL\@mkboth{}{}}
   \thispagestyle{plain}
   \addcontentsline{toc}{chapter}{\protect\@textofLoL}
   \hbox to\textwidth{Listing Number \hfill Page}
   {\let\footnotemark\relax  % in case one is in the title
    \uwsinglespace
   \@starttoc{lol}
    }
   }
%

I just copied the block for the List of Figures and tried changing it appropriately, but it doesn't work. I assume this is because \lstlistoflistings is in the listings package, so it's different, but I'm not sure in what way.

EDIT: here is a minimal .tex file that reproduces the problem:

\documentclass [11pt, proquest] {uwthesis}[2020/02/24]
\setcounter{tocdepth}{1}  % Print the chapter and sections to the toc

% for code listings
\usepackage{listings}

\begin{document}


% ----- contents & etc.
%
\tableofcontents
\listoffigures
\lstlistoflistings

\textpages

\begin{figure}
    \centering
    test
    \caption{Pipeline Diagram}
    \label{fig:pipeline}
\end{figure}

\begin{lstlisting}[caption=Example file snippet]
hello world
\end{lstlisting}


\end{document}