% dafny.sty
% Dafny mode for the LaTeX listings package.
% Rustan Leino, 22 June 2008.

\usepackage{listings}

\lstdefinelanguage{dafny}{
  morekeywords={class,datatype,bool,nat,int,object,set,seq,array,array2,array3,%
      function,unlimited,
      ghost,var,static,refines,replaces,by,
      method,constructor,returns,module,imports,in,
      requires,modifies,ensures,reads,decreases,free,
      % expressions
      match,case,false,true,null,old,fresh,allocated,choose,this,
      % statements
      assert,assume,print,new,havoc,if,then,else,while,invariant,break,label,return,foreach,
      },
  literate=%
    {:}{$\colon$}1
    {::}{$\bullet$}2
    {:=}{$:$$=$}2
    {!}{$\lnot$}1
    {!!}{$\not\cap$}1
    {==}{$=$}1
    {!=}{$\neq$}1
    {&&}{$\land$}1
    {||}{$\lor$}1
    {<=}{$\le$}1
    {>=}{$\ge$}1
    % the following isn't actually Dafny, but it gives the option to produce nicer latex
    {|=>}{$\Rightarrow$}2
    {<=set}{$\subseteq$}1
    {+set}{$\cup$}1
    {*set}{$\cap$}1
    {==>}{$\Longrightarrow$}3 
    {=>}{$\Rightarrow$}2
    {<==>}{$\Longleftrightarrow$}4 
    {forall}{$\forall$}1
    {exists}{$\exists$}1
    {!in}{$\not\in$}1
    {\\in}{$\in$}1
    % the following isn't actually Dafny, but it gives the option to produce nicer latex
    {<<}{$\langle$}1
    {>>}{$\rangle$}1
    {...}{$\ldots$}1
    {\\alpha}{$\alpha$}1
    {\\beta}{$\beta$}1
    {\\gamma}{$\gamma$}1
    {\\delta}{$\delta$}1
    {\\epsilon}{$\epsilon$}1
    {\\zeta}{$\zeta$}1
    {\\eta}{$\eta$}1
    {\\theta}{$\theta$}1
    {\\iota}{$\iota$}1
    {\\kappa}{$\kappa$}1
    {\\lambda}{$\lambda$}1
    {\\mu}{$\mu$}1
    {\\nu}{$\nu$}1
    {\\xi}{$\xi$}1
    {\\pi}{$\pi$}1
    {\\rho}{$\rho$}1
    {\\sigma}{$\sigma$}1
    {\\tau}{$\tau$}1
    {\\upsilon}{$\upsilon$}1
    {\\phi}{$\phi$}1
    {\\chi}{$\chi$}1
    {\\psi}{$\psi$}1
    {\\omega}{$\omega$}1
    {\\Gamma}{$\Gamma$}1
    {\\Delta}{$\Delta$}1
    {\\Theta}{$\Theta$}1
    {\\Lambda}{$\Lambda$}1
    {\\Xi}{$\Xi$}1
    {\\Pi}{$\Pi$}1
    {\\Sigma}{$\Sigma$}1
    {\\Upsilon}{$\Upsilon$}1
    {\\Phi}{$\Phi$}1
    {\\Psi}{$\Psi$}1
    {\\Omega}{$\Omega$}1
    ,
  sensitive=true,  % case sensitive
  morecomment=[l]{//},
  morecomment=[s]{/*}{*/},
  morestring=[b]",
  numbers=none,
  firstnumber=0,
  numberstyle=\tiny,
  stepnumber=5,
  basicstyle=\scriptsize\sffamily,
  commentstyle=\itshape,
  keywordstyle=\bfseries,
  ndkeywordstyle=\bfseries,
}
\lstnewenvironment{dafny}[1][]{%
  \lstset{language=dafny,
    floatplacement={tbp},captionpos=b,
    frame=lines,xleftmargin=8pt,xrightmargin=8pt,basicstyle=\ttfamily,#1}}{}
\lstnewenvironment{dafnyNoLines}[1][]{%
  \lstset{language=dafny,
    floatplacement={tbp},captionpos=b,
    xleftmargin=8pt,xrightmargin=8pt,basicstyle=\ttfamily,#1}}{}
\def\inlinedafny{%
    \lstinline[language=dafny,basicstyle=\ttfamily,columns=fixed]}
\newcommand{\lstfile}[1]{
  \lstinputlisting[language=dafny,%
    frame=lines,xleftmargin=8pt,xrightmargin=8pt,basicstyle=\ttfamily,columns=fixed]{#1}
}