%D \module
%D   [      file=s-math-atoms.mkxl,
%D        version=2022.02.13,
%D          title=\CONTEXT\ Style File,
%D       subtitle=Show Math Atom Spacing,
%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.

%D This is just a quick and dirty overview.

\startmodule[math-atoms]

\setvalue{atom:\number\mathordinarycode    }{ord}%inary}
\setvalue{atom:\number\mathoperatorcode    }{ope}%rator}
\setvalue{atom:\number\mathbinarycode      }{bin}%ary}
\setvalue{atom:\number\mathrelationcode    }{rel}%ation}
\setvalue{atom:\number\mathopencode        }{ope}%n}
\setvalue{atom:\number\mathclosecode       }{clo}%se}
\setvalue{atom:\number\mathpunctuationcode }{pun}%ctuation}
%setvalue{atom:\number\mathinnercode       }{inn}%er}
%setvalue{atom:\number\mathovercode        }{ove}%r}
%setvalue{atom:\number\mathundercode       }{und}%er}
\setvalue{atom:\number\mathfractioncode    }{fra}%ction}
\setvalue{atom:\number\mathradicalcode     }{rad}%ical}
\setvalue{atom:\number\mathmiddlecode      }{mid}%dle}
%setvalue{atom:\number\mathaccentcode      }{acc}%ent}
%setvalue{atom:\number\mathfencedcode      }{fen}%ced}
%setvalue{atom:\number\mathvariablecode    }{var}%iable}
%setvalue{atom:\number\mathactivecode      }{act}%ive}
%setvalue{atom:\number\mathvcentercode     }{vce}%nter}
%setvalue{atom:\number\mathreservedcode    }{res}%erved}
%setvalue{atom:\number\mathimaginarycode   }{ima}%ginary}
%setvalue{atom:\number\mathdifferentialcode}{dif}%ferential}
%setvalue{atom:\number\mathexponentialcode }{exp}%onential}
\setvalue{atom:\number\mathfunctioncode    }{fun}%ction}
\setvalue{atom:\number\mathdigitcode       }{dig}%it}

\dostepwiserecurse \mathordinarycode \mathdigitcode \plusone {
    \setmathatomrule \mathbegincode #1 \allmathstyles \mathbegincode #1
    \setmathatomrule #1 \mathendcode \allmathstyles #1 \mathendcode
    \dostepwiserecurse \mathordinarycode \mathdigitcode \plusone {
        \setmathatomrule#1 ##1 \allmathstyles #1 ##1
    }
}

\protected\def\showmathatomspacing#1{
    \startTEXpage[offset=10pt]
        \showmakeup[mathglue]
        \bTABLE[align=middle,width=4em]
            \dostepwiserecurse \mathordinarycode \mathdigitcode \plusone {%
                \ifcsname atom:##1\endcsname
                    \bTR
                        \dostepwiserecurse \mathordinarycode \mathdigitcode \plusone {%
                            \ifcsname atom:####1\endcsname
                                \bTD
                                    $ #1%
                                      \mathatom class ##1   {\hpack to 1.5em{\infofont[\hss\getvalue{atom:##1}\hss]}}
                                      \mathatom class ####1 {\hpack to 1.5em{\infofont[\hss\getvalue{atom:####1}\hss]}}
                                    $
                                \eTD
                            \fi
                        }
                    \eTR
                \fi
            }
            \bTR[frame=off]
                \bTD[nx=12,height=6ex,align={middle,lohi}]
                    \type{#1}
                \eTD
            \eTR
            \bTR
                \bTD[nx=12,align=middle]
                    \infofont\hfill
                    tiny  : \the\tinymuskip\hfill
                    thin  : \the\thinmuskip\hfill
                    med   : \the\medmuskip\hfill
                    thick : \the\thickmuskip\hfill\strut
                \eTD
            \eTR
        \eTABLE
    \stopTEXpage
}

\stopmodule

\continueifinputfile{s-math-atoms.mkxl}

\starttext

    \showmathatomspacing{\displaystyle}
    \showmathatomspacing{\textstyle}
    \showmathatomspacing{\scriptstyle}
    \showmathatomspacing{\scriptscriptstyle}
    \showmathatomspacing{\crampeddisplaystyle}
    \showmathatomspacing{\crampedtextstyle}
    \showmathatomspacing{\crampedscriptstyle}
    \showmathatomspacing{\crampedscriptscriptstyle}

\stoptext