\ProvidesPackage{hetcasl}[2002/10/04 v0.1 LaTeX Package for CASL v1.0.1]

\NeedsTeXFormat{LaTeX2e}

% Required packages

\RequirePackage{ifthen}

\RequirePackage{tabularx}

\RequirePackage{calc}

\RequirePackage[latin1]{inputenc}

% \RequirePackage{alltt}

\newcounter{@opentabulars}

\setcounter{@opentabulars}{0}

\newlength{\@oldparindent}

\newlength{\@hetcaslmaxwidth}

\newlength{\@remhetcaslwidth}

\newlength{\@KWwidth}%

% The next two length variables will be used in \KW

\newlength{\@realWidth}\newlength{\@neededWidth}

\newif\ifhetcasl \hetcaslfalse

\newenvironment{hetcasl}[1][\textwidth]%

{%begin stuff

\ifhetcasl%

\PackageError{hetcasl evironments cannot nested}%

\else\hetcasltrue\fi%

\begingroup%

\setlength{\@oldparindent}{\the\parindent}%

\setlength{\parindent}{0cm}%

\setlength{\@hetcaslmaxwidth}{#1}%

\setlength{\@remhetcaslwidth}{\the\@hetcaslmaxwidth}%

%\begin{alltt}\begingroup\rmfamily

\begin{tabbing}%

% a little line to set up three useful tabstops for rendering parts

% of a library and or specification

\KW{view} \=\KW{preds} \=~~~~~~~\=\kill

}%

{%end stuff

\end{tabbing}%

%\endgroup\end{alltt}

%\@CloseAllTabulars%

\setlength{\parindent}{\the\@oldparindent}%

\endgroup%

\hetcaslfalse%

}

\newcommand{\@HetCASLPrelude}{%

\settowidth{\@KWwidth}{\textbf{view}}

%%%% define all the makros needed for typesetting hetCASL

%

% \KW prints a KeyWord within a box that is at least \@KWwidth wide.

% If the keyword needs more space the box is as wide as the kyeword

% is. The optional argument overrides \@KWwidth with the width of the

% mandatory argument in bold face. The mandatory argument is always

% printed in bold face.

\newcommand{\KW}[2][no--format--keyword]%

{\ifthenelse{\equal{##1}{no--format--keyword}}%

{% no optional argument

\settowidth{\@neededWidth}{\textbf{##2}}}%

{% optional argument given

\settowidth{\@realWidth}{\textbf{##2}}%

\settowidth{\@KWwidth}{\textbf{##1}}%

\ifthenelse{\@KWwidth > \@realWidth}%

{\setlength{\@neededWidth}{\@KWwidth}}%

{\setlength{\@neededWidth}{\@realWidth}}}%

\makebox[% set the width of the box not smaller than the width of the KeyWord

\@neededWidth]%

[l]{\textbf{##2}}%

}%

% \SId prints its argument in small caps as a Structured Id for names

% of specifications, views and libraries

\newcommand{\SId}[1]{\textsc{##1}}%

% \SIdIndex prints its argument like \SId but sets an Index Entry if

% redifined

\newcommand{\SIdIndex}[1]{\SId{##1}%

}%

% \Id prints its argument in italic face as one word, for all other

% identifiers not covered by \SId and only containing letters, numbers

% and \_

\newcommand{\Id}[1]{\textit{##1}}%

% \AX prints its argument in math modus

\newcommand{\Ax}[1]{\ensuremath{##1}}%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% starting a library

\newcommand{\library}[1]{\textbf{library}\ \textsc{##1}\ }

% printing a version number

%\newcommand{\version}[1]{\textnormal{\textbf{version}\ ##1}}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

% comments, annotations and labels

\newcommand{\commentline}[1]{\textbf{\%\%}{\small##1}}

%

\newenvironment{commentgroup}%

{\textbf{\%\{}\begingroup\small}%

{\endgroup\textbf{\}\%}}%

%

\newcommand{\annoteline}[2]{\textbf{\%##1}\ {\small \(##2\)}}%

%

\newenvironment{annotegroup}[1]%

{\textbf{\%##1(}\begingroup\small}%

{\endgroup\textbf{)\%}}%

%

\newcommand{\casllabel}[1]{\textbf{\%(}{\small##1}\textbf{)\%}}%

%

\newenvironment{mlabel}%

{\textbf{\%(}\begingroup\small}%

{\endgroup\textbf{)\%}}%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%

\newcommand{\place}{\_\_}%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% download items (from, get are automatically printed)

\newenvironment{downloaditem}[1]%

{\begingroup\sc

\textnormal{\textbf{from}}\ ##1\ %

%\textnormal{\ifthenelse{\equal{##1}{no-version}}{}{\version{##1}\ }}%

\textnormal{\textbf{get}}}%

{\endgroup}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%% specifications

% specdefn starts a new spec defn

% arguments: ##1 ::= opt. semantic-anno

% ##2 ::= spec name

% ##3 ::= parameters (see parameterspecs-env)

% ##4 ::= imports (see importspecs-env)

\newenvironment{specdefn}[4][no-semantic-anno]%

{\textbf{spec}\ \textsc{##2}%

\ifthenelse{\equal{##3}{}}{}{##3}%

\ \(=\)%

}%

{}

% end of \@HetCASLPrelude

}

\@HetCASLPrelude%

%% helpers

% calculate a new width based on \@remhetcaslwidth and the fixed width

% given as argument.

\newcommand{\@calc@width}[1]{}

%\newcommand{\@tabnewline}{\\&}

\newcommand{\@condEOL}{\ifthenelse{\the@opentabulars=0}{\\}{\@tabnewline}}

\newcommand{\@CloseAllTabulars}{}