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Diffstat (limited to 'tex/context/base/mkii/xtag-stk.mkii')
| -rw-r--r-- | tex/context/base/mkii/xtag-stk.mkii | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/tex/context/base/mkii/xtag-stk.mkii b/tex/context/base/mkii/xtag-stk.mkii new file mode 100644 index 000000000..d454a63ca --- /dev/null +++ b/tex/context/base/mkii/xtag-stk.mkii @@ -0,0 +1,230 @@ +%D \module +%D [ file=xtag-exp, +%D version=2006.01.19, +%D title=\CONTEXT\ XML Macros, +%D subtitle=Stacking Data, +%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. + +\writestatus{loading}{ConTeXt XML Macros / Stacks} + +%D This module is experimental. Don't use it (yet). It needs a +%D clean-up. The stack handler is used in the third MathML renderer. + +\unprotect + +\ifx\XMLRtoks \undefined \newtoks \XMLRtoks \fi +\ifx\XMLstacklevel\undefined \newcount\XMLstacklevel \fi + +\def\@@xmlstack{xmlstack} + +\let\XMLstackid\empty + +\def\resetXMLelements + {\XMLstacklevel\zerocount} + +\def\startsavingXMLelements % maybe something with \ignorespaces \\removeunwantedspaces + {\XMLstacklevel\zerocount + \let\normalexecuteXMLelement\executeXMLelement + \def\executeXMLelement{\csname\@@XMLelement:\@@xmlstack\ifcase\kindofXMLelement\or\or\or/\fi\endcsname}} + +\def\stopsavingXMLelements + {\let\executeXMLelement\normalexecuteXMLelement} + +\defineXMLnestedenvironmentsave + [\@@xmlstack] + {} + {\pushXMLdataonstack} + +\startXMLmapping[xmlstack:test] + + \defineXMLnestedenvironmentsave + [\@@xmlstack] + {} + {\pushXMLnameonstack} + + % in mathml handler: + % + % \defineXMLnested + % [apply] + % {\startsavingXMLelements} + % {\stopsavingXMLelements} + +\stopXMLmapping + +\def\pushXMLdataonstack + {\advance\XMLstacklevel\plusone + \letvalue {\@@xmlstack:n:\XMLstackid:\number\XMLstacklevel}\currentXMLelement + \saveXMLdata {\@@xmlstack:t:\XMLstackid:\number\XMLstacklevel} \@@xmlstack + \saveXMLdatainelement{\@@xmlstack:d:\XMLstackid:\number\XMLstacklevel}\currentXMLelement\@@xmlstack} + +\def\pushXMLnameonstack + {\advance\XMLstacklevel\plusone + \letvalue {\@@xmlstack:n:\XMLstackid:\number\XMLstacklevel}\currentXMLelement} + +\def\eraseXMLdataonstack#1% + {\letvalue{\@@xmlstack:n:\XMLstackid:\number#1}\empty + \XMLerase{\@@xmlstack:t:\XMLstackid:\number#1}% + \XMLerase{\@@xmlstack:d:\XMLstackid:\number#1}} + +\def\getXMLstackdata{\getXMLstackiddata\XMLstackid} +\def\getXMLstackname{\getXMLstackidname\XMLstackid} +\def\getXMLstacktext{\getXMLstackidtext\XMLstackid} + +\def\getXMLstackiddata#1#2{\flushXMLelement{\@@xmlstack:d:#1:\ifnum#2>\XMLstacklevel\else\number#2\fi}} +\def\getXMLstackidname#1#2{\getvalue {\@@xmlstack:n:#1:\ifnum#2>\XMLstacklevel\else\number#2\fi}} +\def\getXMLstackidtext#1#2{\flushXMLelement{\@@xmlstack:t:#1:\ifnum#2>\XMLstacklevel\else\number#2\fi}} + +\def\rawXMLstackdata{\rawXMLstackiddata\XMLstackid} +\def\rawXMLstackname{\rawXMLstackidname\XMLstackid} +\def\rawXMLstacktext{\rawXMLstackidtext\XMLstackid} + +\def\rawXMLstackiddata#1#2{\flushXMLelement{\@@xmlstack:d:#1:\number#2}} +\def\rawXMLstackidname#1#2{\getvalue {\@@xmlstack:n:#1:\number#2}} +\def\rawXMLstackidtext#1#2{\flushXMLelement{\@@xmlstack:t:#1:\number#2}} + +\def\defXMLstackiddata#1#2#3% + {\defXMLelement#1{\@@xmlstack:d:#2:\ifnum#3>\XMLstacklevel\else\number#3\fi}} + +\def\defXMLstackdata#1% #2 + {\defXMLstackiddata#1\XMLstackid} + +\def\showXMLstacknames + {\hbox{[\space\dorecurse\XMLstacklevel{\recurselevel:\getXMLstackname\recurselevel\space}]}} + +\def\flushXMLstackfrom#1% + {\dostepwiserecurse{#1}\XMLstacklevel\plusone + {\getXMLstackdata\recurselevel}} + +\def\flushXMLstackwith#1#2% + {\dostepwiserecurse{#1}\XMLstacklevel\plusone + {\relax\ifnum\recurselevel>#1\relax#2\fi + \getXMLstackdata\recurselevel}} + +\def\flushXMLnamedstackwith#1#2#3% + {\dostepwiserecurse{#1}\XMLstacklevel\plusone + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#2}} + {\ifnum\recurselevel>#1\relax#3\fi + \getXMLstackdata\recurselevel}}} + +\def\countXMLnamedstack#1% todo: \nofXMLchildren ! ! ! ! ! + {\scratchcounter\zerocount + \dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\advance\scratchcounter\plusone}}} + +\def\collectXMLstack#1% + {\XMLRtoks\emptytoks + \dorecurse\XMLstacklevel + {\ifnum\recurselevel>\plusone\appendtoks#1\to\XMLRtoks\fi + \expandafter\appendtoks\expandafter\getXMLstackdata\expandafter{\recurselevel}\to\XMLRtoks}} + +\def\collectXMLstackrows#1#2% + {\XMLRtoks\emptytoks + \dostepwiserecurse{#1}\XMLstacklevel\plusone + {\ifnum\recurselevel>#1\appendtoks#2\to\XMLRtoks\fi + \expandafter\appendtoks\expandafter\getXMLstackdata\expandafter{\recurselevel}\to\XMLRtoks}} + +\def\collectXMLnamedstack#1#2% + {\XMLRtoks\emptytoks + \dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\ifnum\recurselevel>\plusone\appendtoks#2\to\XMLRtoks\fi + \expandafter\appendtoks\expandafter\getXMLstackdata\expandafter{\recurselevel}\to\XMLRtoks}}} + +\def\collectXMLnamedstacknamed#1#2#3% names, inbetween, nestednames (maddness, this macro) + {\XMLRtoks\emptytoks + \!!doneafalse + \let\globalascii\empty + \dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\begingroup + \startsavingXMLelements + \rawXMLstacktext\recurselevel % still on stack, raw does not test + \stopsavingXMLelements + \let\globalascii\empty + \dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#2}} + {\xdef\globalascii{\getXMLstackdata\recurselevel}}}% + \endgroup + \ifx\globalascii\empty\else + \if!!donea\appendtoks#3\to\XMLRtoks\fi + \expandafter\appendtoks\globalascii\to\XMLRtoks + \!!doneatrue + \fi}}} + +\def\XMLcopydata#1#2% to from + {\@EA\let\csname\@@XMLdata:#1\@EA\endcsname\csname\@@XMLdata:#2\endcsname} +\def\XMLcopysave#1#2% to from + {\@EA\let\csname\@@XMLsave:#1\@EA\endcsname\csname\@@XMLsave:#2\endcsname} + +\def\removeXMLdatafromstack#1% + {\dorecurse\XMLstacklevel + {\doif{\getXMLstackname\recurselevel}{#1} + {\dostepwiserecurse\recurselevel{\numexpr\XMLstacklevel+\minusone}\plusone + {\scratchcounter\numexpr\recurselevel+\plusone\relax + \@EA\let\csname\@@xmlstack:n:\XMLstackid:\recurselevel\@EA\endcsname\csname\@@xmlstack:n:\XMLstackid:\number\scratchcounter\endcsname + \XMLcopysave{\@@xmlstack:t:\XMLstackid:\recurselevel}{\@@xmlstack:t:\XMLstackid:\number\scratchcounter}% + \XMLcopysave{\@@xmlstack:d:\XMLstackid:\recurselevel}{\@@xmlstack:d:\XMLstackid:\number\scratchcounter}}% + \advance\XMLstacklevel\minusone + \exitloop}}} + +%D BEWARE: these names may change (get stack in the name) + +\def\XMLallnamed#1% + {\dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\getXMLstackdata\recurselevel}}} + +\def\defXMLfirstnamed#1#2% \cs list + {\dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#2}} + {\defXMLstackdata#1\recurselevel\exitloop}}} + +\def\defXMLfirstnamedtext#1#2% \cs list + {\dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#2}} + {\edef#1{\getXMLstacktext\recurselevel}\exitloop}}} + +\def\XMLfirstnamed#1% + {\dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\getXMLstackdata\recurselevel\exitloop}}} + +\def\XMLnotnamed#1% + {\dorecurse\XMLstacklevel + {\expanded{\doifnotinset{\getXMLstackname\recurselevel}{#1}} + {\getXMLstackdata\recurselevel\exitloop}}} + +\let\XMLstackposition\!!zerocount + +\def\XMLdoifonstackelse#1% was \XMLdoifelsefound + {\!!doneafalse + \let\XMLstackposition\!!zerocount + \dorecurse\XMLstacklevel + {\expanded{\doifinset{\getXMLstackname\recurselevel}{#1}} + {\let\XMLstackposition\recurselevel\!!doneatrue\exitloop}}% + \if!!donea + \expandafter\firstoftwoarguments + \else + \expandafter\secondoftwoarguments + \fi} + +%D Handy: + +\def\pushXMLmeaning#1% or [#1] + {\@EA\pushmacro\csname\@@XMLelement:#1/\endcsname + \@EA\pushmacro\csname\@@XMLelement:#1\endcsname + \@EA\pushmacro\csname\@@XMLelement:/#1\endcsname} + +\def\popXMLmeaning#1% or [#1] + {\@EA\popmacro\csname\@@XMLelement:#1/\endcsname + \@EA\popmacro\csname\@@XMLelement:#1\endcsname + \@EA\popmacro\csname\@@XMLelement:/#1\endcsname} + +\protect \endinput |