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\documentclass[times]{article}

\usepackage{vdmlisting}
\usepackage{hyperref}
%\usepackage{vdm}
\def\vdmlisting{\texttt{vdmlisting}}
\def\envvdmsl{\texttt{vdmsl}}
\def\envvdmpp{\texttt{vdmpp}}
\def\envvdmrt{\texttt{vdmrt}}

\title{The \textbf{\vdmlisting} Package}
\author{Kenneth Lausdahl\\
Dept. of Engineering\\
Aarhus University\\
Denmark.\\
\texttt{kenneth@lausdahl.com}}
\date{10 Novemberl 2020 \\
Version 1.1}




\begin{document}


\maketitle
\begin{abstract}
The \vdmlisting package is a Vienna Development Method (VDM) source code printer for \LaTeX . The package uses the listings package and provides a number of new listing environments for the three VDM dialects: VDM-SL,VDM-PP and VDM-RT. If one wants to typeset VDM with a mathematical syntax instead of the ASCII syntax used here then use the \texttt{vdm} package instead.
\end{abstract}

\tableofcontents

\section{Getting started}

Before using the \vdmlisting package, you should be familiar with the \LaTeX typesetting system and the listings package which this packages depends upon. 

\subsection{A minimal example}
Here is a minimal file for \vdmlisting showing a VDM function:


\begin{verbatim}
  \documentstyle{article}
  \usepackage{vdmlisting}
	
  \begin{document}
    \begin{vdmsl}
        add : int * int -&gt;
       add(a,b) == a+b;
    \end{vdmsl}
  \end{document}
\end{verbatim}



\subsection{Typesetting VDM with listings}
This package defined three listing environments that can be used to typeset VDM. The environments are defined as:

\begin{verbatim}
\begin{listing-name}[options]
  VDM specification
\end{listing-name}
\end{verbatim}

\noindent The \texttt{options} are parsed directly to the \texttt{lstlisting} environment and could be used to e.g. set the label or caption like \texttt{label=lst:mymodel,caption=My special specification}. The \texttt{listing-name} may be any of the following:

\begin{description}
\item[\envvdmsl] The \envvdmsl environment configures the listing environment to use the VDM-SL language definition:

\begin{verbatim}
\begin{vdmsl}[label=lst:mymodule,caption=My module]
  module MyModule
  end MyModule
\end{vdmsl}
\end{verbatim}
 it typesets as follows:

\begin{vdmsl}[label=lst:mymodule,caption=My module]
  module MyModule
  end MyModule
\end{vdmsl}

\item[\envvdmpp] The \envvdmpp environment configures the listing environment to use the VDM-PP language definition:

\begin{verbatim}
\begin{vdmpp}[label=lst:myclass,caption=My Class]
  class MyClass
  end MyClass
\end{vdmpp}
\end{verbatim}
 it typesets as follows:

\begin{vdmpp}[label=lst:myclass,caption=My Class]
  class MyClass
  end MyClass
\end{vdmpp}

\item[\envvdmrt] The \envvdmrt environment configures the listing environment to use the VDM-RT language definition:

\begin{verbatim}
\begin{vdmrt}[label=lst:myclass,caption=My System]
  system MySystem
  end MySystem
\end{vdmrt}
\end{verbatim}
 it typesets as follows:

\begin{vdmrt}[label=lst:myclass,caption=My System]
  system MySystem
  end MySystem
\end{vdmrt}



\end{description}

Furthermore, the environments are configured with \texttt{escapeinside=\{(*@\}\{@*)\}} enabling the command \texttt{\textbackslash vdmnotcovered\{ VDM specification\}} to be used to mark execution coverage for the VDM specification displayed.

\subsection{Previous versions}

This package includes all environments from the previous version \texttt{1.0} of this package. All environments and language definitions can be post fixed with \texttt{\_10} to get the previous version.

\section{Package loading}
As usual in \LaTeX, the package is loaded by \texttt{\textbackslash usepackage[optionsi]\{vdmlisting\}},
where [optionsi] is optional and gives a comma separated list of options:

\begin{description}

\item[color] This loads the \texttt{color} package and defines the \texttt{vdmnotcovered} command to use a red color.

\item[notimes] This package loads the \texttt{times} package, by default, so if you do not want that to happen use this option to skip the load of \texttt{times}.

\end{description}



\section{Installing the \vdmlisting \ files}

Place the file {\tt vdmlisting.sty} in your standard directory for \LaTeX\
style files (your system administrator will know where this is). 


\section{The License}
The vdmlisting.sty and vdmlisting.tex file is copyright 2012--2020 Kenneth Lausdahl and is released under the LaTeX Project Public License 1.3 or later.

\end{document}
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