%D \module
%D   [       file=xtag-prs,
%D        version=2004.08.18,
%D          title=\CONTEXT\ XML Macros,
%D       subtitle=Parsing,
%D         author=Hans Hagen,
%D           date=\currentdate,
%D      copyright={PRAGMA ADE \& \CONTEXT\ Development Team}]
%C
%C This module is part of the \CONTEXT\ macro||package and is
%C therefore copyrighted by \PRAGMA. See mreadme.pdf for
%C details.

\unprotect

\def\analyzefunction#1%
  {\expanded{\doanalyzefunction#1\relax\relax(#1)}\empty\relax\end}

\def\doanalyzefunction#1#2(#3)#4\relax#5\end
  {\ifx#4\empty
     \let\functionname\empty
   \else
     \def\functionname{#1#2}%
   \fi
   \getfunctionargs#3,\empty,\empty,\empty,\empty,\empty,\empty,\empty,\empty\relax}

\def\getfunctionargs#1,#2,#3,#4,#5,#6,#7,#8,#9\relax
  {\edef\functionA{#1}\edef\functionB{#2}%
   \edef\functionC{#3}\edef\functionD{#4}%
   \edef\functionE{#5}\edef\functionF{#6}%
   \edef\functionG{#7}\edef\functionH{#8}}

% \analyzefunction{x}                                     [\functionname][a:\functionA/b:\functionB/c:\functionC/d:\functionD] \endgraf
% \analyzefunction{sin(x)}                                [\functionname][a:\functionA/b:\functionB/c:\functionC/d:\functionD] \endgraf
% \analyzefunction{1pt,2pt,3pt,4pt}                       [\functionname][a:\functionA/b:\functionB/c:\functionC/d:\functionD] \endgraf
% \analyzefunction{rect(1pt,2pt,3pt,4pt)}                 [\functionname][a:\functionA/b:\functionB/c:\functionC/d:\functionD] \endgraf
% \analyzefunction{1pt,2pt,3pt,4pt,5pt,6pt,7pt,8pt}       [\functionname][e:\functionE/f:\functionF/g:\functionG/h:\functionH] \endgraf
% \analyzefunction{rect(1pt,2pt,3pt,4pt,5pt,6pt,7pt,8pt)} [\functionname][e:\functionE/f:\functionF/g:\functionG/h:\functionH] \endgraf

% todo [#1][settings][maxwidth,maxheight,method=] with method=x y xy [1]

\protect \endinput