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Diffstat (limited to 'Master/texmf-dist/tex/context/base/core-stg.tex')
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diff --git a/Master/texmf-dist/tex/context/base/core-stg.tex b/Master/texmf-dist/tex/context/base/core-stg.tex new file mode 100644 index 00000000000..94e5250e500 --- /dev/null +++ b/Master/texmf-dist/tex/context/base/core-stg.tex @@ -0,0 +1,72 @@ +%D \module +%D [ file=core-stg, +%D version=2006.08.16, +%D title=\CONTEXT\ Core Macros, +%D subtitle=Strategies, +%D author=Hans Hagen, +%D date=\currentdate, +%D copyright={PRAGMA / Hans Hagen \& Ton Otten}] +%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 a prelude to strategies. It is rather old code +%D used in a project may years ago. Use with care since I +%D will pick up this thread. (moved from cont-new) + +\unprotect + +\def\s!strategy{strategy} + +\def\currentstrategypass {1} +\def\currentstrategyvariable{0} +\def\maximumstrategypass {8} + +\newconditional\strategypassneeded +\newconditional\strategypassforced + +\definetwopasslist{\s!strategy} + +\def\registerstrategypass% + {\ifnum\currentstrategypass>\maximumstrategypass \else + \ifconditional\strategypassforced + \doglobal\increment\currentstrategypass + \else%\ifconditional\strategypassneeded + %\doglobal\increment\currentstrategypass + \fi%\fi + \fi + \savecurrentvalue\currentstrategypass{\currentstrategypass}} + +\appendtoks \registerstrategypass \to \everybye % \everylastshipout + +\def\setstrategyvariable#1#2% key value + {%\doifnotstrategyvariable{#1}{\global\settrue\strategypassneeded}% + \doglobal\increment\currentstrategyvariable + \savetaggedtwopassdata{\s!strategy}{\currentstrategyvariable}{#1}{#2}} + +\def\doifstrategyvariableelse#1#2#3% + {\getstrategyvariable{#1}\iftwopassdatafound#2\else#3\fi} + +\def\getstrategyvariable#1% key + {\findtwopassdata{\s!strategy}{#1}% + \setxvalue{\s!strategy:#1}{\twopassdata}} + +\def\retainstrategyvariable#1% key + {\expanded{\setstrategyvariable{#1}{\strategyvariable{#1}}}} + +\def\strategyvariable#1% key + {\csname\s!strategy:#1\endcsname} + +\let\stratvar\strategyvariable + +\def\forcestrategy{\global\settrue \strategypassforced} +\def\abortstrategy{\global\setfalse\strategypassforced} + +\def\doifstrategyvariableelse#1#2#3% + {\getstrategyvariable{#1}\iftwopassdatafound#2\else#3\fi} + +\def\doifstrategyvariable #1#2{\doifstrategyvariableelse{#1}{#2}{}} +\def\doifnotstrategyvariable#1#2{\doifstrategyvariableelse{#1}{}{#2}} + +\protect \endinput |