diff options
Diffstat (limited to 'graphics/pgf/base/tex/generic/utilities/pgffor.code.tex')
-rw-r--r-- | graphics/pgf/base/tex/generic/utilities/pgffor.code.tex | 767 |
1 files changed, 767 insertions, 0 deletions
diff --git a/graphics/pgf/base/tex/generic/utilities/pgffor.code.tex b/graphics/pgf/base/tex/generic/utilities/pgffor.code.tex new file mode 100644 index 0000000000..f81a61c9e1 --- /dev/null +++ b/graphics/pgf/base/tex/generic/utilities/pgffor.code.tex @@ -0,0 +1,767 @@ +% Copyright 2019 by Till Tantau and Mark Wibrow +% +% This file may be distributed and/or modified +% +% 1. under the LaTeX Project Public License and/or +% 2. under the GNU Public License. +% +% See the file doc/generic/pgf/licenses/LICENSE for more details. + +\ProvidesPackageRCS{pgffor.code.tex} + +% pgfmath is needed +\ifdefined\pgfmathloaded\else + \input pgfmath.code.tex +\fi + +\newdimen\pgffor@iter +\newdimen\pgffor@skip +\newif\ifpgffor@continue + + +\def\pgffor@reset@hooks{% + \let\pgffor@beginhook=\relax% + \let\pgffor@endhook=\relax% + \let\pgffor@afterhook=\relax% +} +\pgffor@reset@hooks + + +% Stack emulation +% +\newtoks\pgffor@stack +\pgffor@stack={{}{}{}} + +\def\pgffor@stackpush#1{% + \def\pgffor@stacktemp{#1}% + \expandafter\expandafter\expandafter\pgffor@stack\expandafter\expandafter\expandafter=% + \expandafter\expandafter\expandafter{\expandafter\expandafter\expandafter% + {\expandafter\pgffor@stacktemp\expandafter}\the\pgffor@stack}% +} + +\def\pgffor@stackpop{\expandafter\pgffor@@stackpop\the\pgffor@stack\pgffor@stackstop} +\def\pgffor@@stackpop#1#2\pgffor@stackstop{\pgffor@stack{#2}#1} + +\def\pgffor@emptyvalues{, \pgffor@stop,}% + +\def\pgffor@foreach{% + \pgffor@atbeginforeach% + \let\pgffor@assign@before@code=\pgfutil@empty% + \let\pgffor@assign@after@code=\pgfutil@empty% + \let\pgffor@assign@once@code=\pgfutil@empty% + \let\pgffor@remember@code=\pgfutil@empty% + \let\pgffor@remember@once@code=\pgfutil@empty% + \pgffor@alphabeticsequencefalse% + \pgffor@contextfalse% + % + \let\pgffor@var=\pgfutil@empty + % + \pgffor@vars% +} + +\let\foreach=\pgffor@foreach + +\def\pgffor@vars{% + \pgfutil@ifnextchar i{\pgffor@@vars@end}{% + \pgfutil@ifnextchar[{\pgffor@@vars@opt}{%] + \pgfutil@ifnextchar/{\pgffor@@vars@slash@gobble}{% + \pgffor@@vars}}}}% + +\def\pgffor@@vars@end in{\pgfutil@ifnextchar\bgroup{\pgffor@normal@list}{\pgffor@macro@list}} +\def\pgffor@@vars@opt[#1]{\pgfkeys{/pgf/foreach/.cd,#1}\pgffor@vars} +\def\pgffor@@vars#1{\pgffor@var@add#1\pgffor@stop\pgffor@vars} +\def\pgffor@@vars@slash@gobble/{\pgffor@@vars} + +\def\pgffor@var@add#1#2\pgffor@stop{% + \ifx\pgffor@var\pgfutil@empty% + \def\pgffor@var{#1}% + \def\pgffor@mainvar{#1}% + \else% + \expandafter\def\expandafter\pgffor@var\expandafter{\pgffor@var/#1}% + \fi% +} + +\def\pgffor@expand@list@true{\let\pgffor@expand@list\edef} +\def\pgffor@expand@list@false{\let\pgffor@expand@list\def} +\def\pgffor@macro@list#1{% + \expandafter\pgffor@normal@list\expandafter{#1}} +\def\pgffor@normal@list#1{% + \pgffor@expand@list\pgffor@values{#1}% + \expandafter\def\expandafter\pgffor@values\expandafter{\pgffor@values, \pgffor@stop,}% + \ifx\pgffor@values\pgffor@emptyvalues + \def\pgffor@values{\pgffor@stop,}% + \fi% + \let\pgffor@body=\pgfutil@empty% + \global\pgffor@continuetrue% + \pgffor@collectbody} +\def\pgffor@collectbody{% + \pgfutil@ifnextchar\foreach{\pgffor@collectforeach}{% + \pgfutil@ifnextchar\bgroup{\pgffor@collectargument}{\pgffor@collectsemicolon}}% +} + +\def\pgffor@collectforeach\foreach#1in{% + \pgfutil@ifnextchar\bgroup{\pgffor@collectforeach@normal{#1}}{\pgffor@collectforeach@macro{#1}}} +\def\pgffor@collectforeach@macro#1#2{% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter{\pgffor@body\foreach#1in#2}% + \pgffor@collectbody% +} +\def\pgffor@collectforeach@normal#1#2{% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter{\pgffor@body\foreach#1in{#2}}% + \pgffor@collectbody% +} +\long\def\pgffor@collectargument#1{% + \expandafter\pgfutil@in@\expandafter\foreach\expandafter{\pgffor@body}% + \ifpgfutil@in@% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter% + {\pgffor@body{#1}}% + \else% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter% + {\pgffor@body#1}% + \fi% + \pgffor@iterate% +} + +\def\pgffor@collectsemicolon{% + \let\pgffor@next=\pgffor@collectnormalsemicolon% + \ifnum\the\catcode`\;=\active\relax% + \let\pgffor@next=\pgffor@collectactivesemicolon% + \fi% + \pgffor@next% +} + +\def\pgffor@collectnormalsemicolon#1;{% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter{\pgffor@body#1;}% + \pgffor@iterate% +} + +{ + \catcode`\;=\active + + \gdef\pgffor@collectactivesemicolon#1;{% + \expandafter\long\expandafter\def\expandafter\pgffor@body\expandafter{\pgffor@body#1;}% + \pgffor@iterate% + } +} + +\def\pgffor@iterate{% + % Must do all of these in case the internal stack is used. + \let\pgffor@last=\pgfutil@empty% + \let\pgffor@prevlast=\pgfutil@empty% + \let\pgffor@dotsend=\pgfutil@empty% + \let\pgffor@dots@pre=\pgfutil@empty% + \let\pgffor@dots@post=\pgfutil@empty% + % + \expandafter\pgffor@scan\pgffor@values} + +\def\pgffor@stop{\pgffor@stop}% +\def\pgffor@dots{...}% + +\def\pgffor@scan{\pgfutil@ifnextchar({\pgffor@scanround}{\pgffor@scanone}} +\def\pgffor@scanround(#1)#2,{\def\pgffor@value{(#1)#2}\pgffor@scanned} +\def\pgffor@scanone#1,{\def\pgffor@value{#1}\pgffor@scanned} + + +% Check for dots. +\newif\ifpgffor@dots@in@ +\def\pgffor@dots@in@#1...#2#3\pgffor@stop{% + \ifx\pgffor@dots@@#2% + \pgffor@dots@in@false% + \else% + \pgffor@dots@in@true% + \fi% +} + +\def\pgffor@dots@@{\pgffor@dots@@} + +\def\pgffor@scanned{% + \ifx\pgffor@value\pgffor@stop% + \let\pgffor@next=\pgffor@after% Done! + \else% + % Check for dots. Quicker than \pgfutil@in@ and not suceptable + % to false-positives when a token sequence ends in a single full-stop. + \expandafter\pgffor@dots@in@\pgffor@value\pgffor@dots@...\pgffor@dots@@\pgffor@stop% + \ifpgffor@dots@in@% + \let\pgffor@next=\pgffor@handledots% + \else% + \let\pgffor@next=\pgffor@handlevalue% + \fi% + \ifpgffor@continue% + \else% + \let\pgffor@next=\pgffor@scan% Done! + \fi% + \fi% + \pgffor@next} + + +\def\pgffor@after{% + \global\pgffor@continuetrue% + \pgffor@atendforeach% + \pgffor@afterhook} + +\def\pgffor@handlevalue{% + \let\pgffor@prevlast=\pgffor@last% + \let\pgffor@last=\pgffor@value% + \pgffor@invokebody% + \pgffor@scan% +} + + +\def\pgffor@invokebody{% + \pgffor@begingroup% + \expandafter\pgfutil@in@\expandafter/\expandafter{\pgffor@var}% + \ifpgfutil@in@% + \expandafter\def\expandafter\pgffor@valuerest\expandafter{\pgffor@value//\relax}% + \expandafter\pgffor@multiassign\pgffor@var/\pgffor@stop/\pgffor@stop/\relax% + \else% + \expandafter\expandafter\expandafter\def\expandafter\pgffor@var\expandafter{\pgffor@value}% + \fi% + % Execute assign once code. + \ifx\pgffor@assign@once@code\pgfutil@empty% + \else% + \pgffor@assign@once@code% + \fi% + % Execute assign before code. + \ifx\pgffor@assign@before@code\pgfutil@empty% + \else% + \pgffor@assign@before@code% + \fi% + % + \expandafter\expandafter\expandafter\pgffor@reset@hooks\expandafter\pgffor@beginhook\expandafter\pgffor@body\pgffor@endhook% + % Execute assign after code. + \ifx\pgffor@assign@after@code\pgfutil@empty% + \else% + \pgffor@assign@after@code% + \fi% + % + \pgffor@endgroup% +} + + +\def\pgffor@multiassign#1/#2/\relax{% + \def\pgffor@currentvar{#1}% + \def\pgffor@rest{#2}% + \ifx\pgffor@currentvar\pgffor@stop% + \let\pgffor@next=\relax% + \else% + \let\pgffor@next=\pgffor@multiassignrest% + \fi% + \pgffor@next% +} + +\def\pgffor@multiassignrest{\expandafter\pgffor@multiassignfinal\pgffor@valuerest} +\def\pgffor@multiassignfinal#1/#2/\relax{% + \def\pgffor@temp{#1}% + \ifx\pgffor@currentvar\pgffor@mainvar% + \ifpgffor@alphabeticsequence% + \pgffor@makealphabetic\pgffor@temp% + \fi% + \fi% + \def\pgffor@test{#2}% + \ifx\pgffor@test\pgfutil@empty% + \expandafter\def\expandafter\pgffor@valuerest\expandafter{\pgffor@temp//\relax}% repeat + \else% + \def\pgffor@valuerest{#2/\relax}% + \fi% + \expandafter\expandafter\expandafter\def\expandafter\pgffor@currentvar\expandafter{\pgffor@temp}% + % + \expandafter\pgffor@multiassign\pgffor@rest/\relax% +} + +\def\pgffor@gobblespaces#1{\pgfutil@ifnextchar x{#1}{#1}} + +\def\pgffor@handledots{% + \pgffor@gobblespaces{\expandafter\pgffor@@handledots\pgffor@value\pgffor@@stop}% +} + +\newif\ifpgffor@context + +\def\pgffor@@handledots#1...#2\pgffor@@stop{% + % Define the context if any. + \def\pgffor@dots@pre{#1}% + \def\pgffor@dots@post{#2}% + \def\pgffor@dots@stripcontext#1##1#2\pgffor@@stop{\def\pgffor@dotsvalue{##1}}% + \pgffor@contexttrue% + \ifx\pgffor@dots@pre\pgfutil@empty% + \ifx\pgffor@dots@post\pgfutil@empty% + \pgffor@contextfalse% + \def\pgffor@dots@stripcontext##1\pgffor@@stop{\def\pgffor@dotsvalue{##1}}% + \fi% + \fi% + \pgffor@gobblespaces{\pgffor@dotsscanend}% +} + +\def\pgffor@dots@value@process#1{% + \expandafter\pgffor@dots@stripcontext#1\pgffor@@stop% + \expandafter\pgffor@dots@charcheck\pgffor@dotsvalue\pgffor@@stop% + \ifpgffor@alphabeticsequence + \else + \ifpgffor@assign@parse + \begingroup + \pgfkeys{/pgf/fpu/false/.try}% + \pgfmathparse{\pgffor@dotsvalue}% + \pgfmath@smuggleone\pgfmathresult + \endgroup + \let\pgffor@dotsvalue=\pgfmathresult + \fi + \fi + \let#1=\pgffor@dotsvalue% +} + +\def\pgffor@dotsscanend#1,{% + \pgffor@alphabeticsequencefalse% + % Strip context and check for a character sequence. + \def\pgffor@dotsend{#1}% + \pgffor@dots@value@process{\pgffor@dotsend}% + % + \pgffor@dots@value@process{\pgffor@last}% + % + % calculate skip% + \ifx\pgffor@prevlast\pgfutil@empty% + \ifdim\pgffor@dotsend pt>\pgffor@last pt% + \pgffor@skip=1pt% + \else% + \pgffor@skip=-1pt% + \fi% + \else% + \pgffor@dots@value@process{\pgffor@prevlast}% + \pgffor@skip=\pgffor@last pt% + \pgffor@iter=\pgffor@prevlast pt% + \advance\pgffor@skip by-\pgffor@iter% + \fi% + \pgffor@iter=\pgffor@last pt% + % do loop + \pgffor@loop% +} + +\def\pgffor@loop{% + \advance\pgffor@iter by\pgffor@skip% + \let\pgffor@next=\pgffor@doloop% + \ifdim\pgffor@skip<0pt% + \ifdim\pgffor@iter<\pgffor@dotsend pt% + \let\pgffor@next=\pgffor@endloop% + \fi% + \else% + \ifdim\pgffor@iter>\pgffor@dotsend pt% + \let\pgffor@next=\pgffor@endloop% + \fi% + \fi% + \ifpgffor@continue% + \else% + \let\pgffor@next=\pgffor@endloop% Done! + \fi% + \pgffor@next% +} + +\def\pgffor@endloop{% + \pgffor@alphabeticsequencefalse% + \pgffor@scan% +} + +{\catcode`\p=12\catcode`\t=12\gdef\Pgffor@geT#1pt{#1}} + +\def\pgffor@doloop{% + \pgffor@begingroup + \edef\pgffor@temp{\expandafter\Pgffor@geT\the\pgffor@iter}% + \edef\pgffor@incheck{{.0/}{\pgffor@temp/}}% + \expandafter\pgfutil@in@\pgffor@incheck% + \ifpgfutil@in@% + \expandafter\pgffor@strip\pgffor@temp% + \fi% + \expandafter\pgfutil@in@\expandafter/\expandafter{\pgffor@var}% + \ifpgfutil@in@% + \expandafter\def\expandafter\pgffor@valuerest\expandafter{\pgffor@temp//\relax}% + \expandafter\pgffor@multiassign\pgffor@var/\pgffor@stop/\pgffor@stop/\relax% + \else% + % Convert to alphabetic sequence, if necessary. + \ifpgffor@alphabeticsequence% + \pgffor@makealphabetic\pgffor@temp% + \expandafter\let\pgffor@var=\pgffor@temp% + \else% + \expandafter\expandafter\expandafter\def\expandafter\pgffor@var\expandafter{\pgffor@temp}% + \fi% + \fi% + % Insert any context, if any. + \ifpgffor@context% + \let\pgffor@temp=\pgffor@dots@pre% + \expandafter\pgfutil@append@macrotomacro\expandafter% + {\expandafter\pgffor@temp\expandafter}\expandafter{\pgffor@var}% + \expandafter\pgfutil@append@macrotomacro\expandafter% + {\expandafter\pgffor@temp\expandafter}\expandafter{\pgffor@dots@post}% + \expandafter\let\pgffor@var=\pgffor@temp% + \fi% + % Perform assignments before loop body. + \ifx\pgffor@assign@before@code\pgfutil@empty% + \else% + \pgffor@assign@before@code% + \fi% + % + \expandafter\expandafter\expandafter\pgffor@reset@hooks\expandafter\pgffor@beginhook\expandafter\pgffor@body\pgffor@endhook% + % + % Perform assignments after loop body. + \ifx\pgffor@assign@after@code\pgfutil@empty% + \else% + \pgffor@assign@after@code% + \fi% + \pgffor@endgroup% + \pgffor@loop% +} + +\def\pgffor@strip#1.0{\def\pgffor@temp{#1}} + +\def\breakforeach{\global\pgffor@continuefalse} + +\def\pgffor@gobbletil@pgffor@@stop#1\pgffor@@stop{} + + +\newif\ifpgffor@registeriscount + +\def\pgffor@ifcsregister#1{% + \expandafter\pgffor@@ifcsregister\meaning#1\pgffor@stop} + +\def\pgffor@@ifcsregister#1#2#3#4#5\pgffor@stop{% + \if#1m% It is an ordinary (m)acro. + \pgffor@registeriscountfalse% + \let\pgffor@csnext=\pgfutil@secondoftwo% + \else% + \if#1u% It is (u)ndefined. + \let\pgffor@csnext=\pgfutil@secondoftwo% + \pgffor@registeriscountfalse% + \else% + \let\pgffor@csnext=\pgfutil@firstoftwo% + \if#4u% It is a co(u)nt + \pgffor@registeriscounttrue% + \else% Assume it is a dimen or skip (bad assumption in the general case). + \pgffor@registeriscountfalse% + \let\pgffor@csnext=\pgfutil@firstoftwo% + \fi% + \fi% + \fi% + \pgffor@csnext} + +\newif\ifpgffor@alphabeticsequence + +% +\def\pgffor@dots@charcheck#1\pgffor@@stop{% + \edef\pgffor@dots@charcheck@temp{#1}% + \expandafter\expandafter\expandafter\pgffor@@dotscharcheck\expandafter\meaning\pgffor@dots@charcheck@temp\pgffor@@stop% +} +\def\pgffor@@dotscharcheck#1#2\pgffor@@stop{% + \if#1t% + \afterassignment\pgffor@gobbletil@pgffor@@stop% + \expandafter\chardef\expandafter\pgffor@char\expandafter=\expandafter`\pgffor@dots@charcheck@temp\relax\pgffor@@stop% + \edef\pgffor@char{\the\pgffor@char}% + \ifnum\pgffor@char>64\relax% From A-Z? + \ifnum\pgffor@char<91\relax% + \let\pgffor@dotsvalue=\pgffor@char% + \pgffor@alphabeticsequencetrue% + \else% + \ifnum\pgffor@char>96\relax% From a-z? + \ifnum\pgffor@char<123\relax% + \let\pgffor@dotsvalue=\pgffor@char% + \pgffor@alphabeticsequencetrue% + \fi% + \fi% + \fi% + \fi% + \fi% +} + +\def\pgffor@makealphabetic#1{% + % Convert the number in the macro passed as #1 to a-z or A-Z. + \pgfutil@tempcnta=#1\relax% + \ifnum\pgfutil@tempcnta>95\relax% + \advance\pgfutil@tempcnta by-96\relax% + \edef#1{\pgffor@alpha\pgfutil@tempcnta}% + \else% + \advance\pgfutil@tempcnta by-64 % + \edef#1{\pgffor@Alpha\pgfutil@tempcnta}% + \fi% +} + +\def\pgffor@Alpha#1{% + \ifcase#1\relax\or A\or B\or C\or D\or E\or F\or G\or H\or I\or J\or K\or L\or M% + \or N\or O\or P\or Q\or R\or S\or T\or U\or V\or W\or X\or Y\or Z\else?\fi% +} + +\def\pgffor@alpha#1{% + \ifcase#1\relax\or a\or b\or c\or d\or e\or f\or g\or h\or i\or j\or k\or l\or m% + \or n\or o\or p\or q\or r\or s\or t\or u\or v\or w\or x\or y\or z\else?\fi% +} + +\newtoks\pgffor@toks + +\def\pgffor@addcstotoks#1{% + \expandafter\def\expandafter\pgffor@tokstemp\expandafter{\expandafter\def\expandafter#1\expandafter{#1}}% + \pgffor@@addcstotoks} + +\def\pgffor@addregtotoks#1{% + \expandafter\def\expandafter\pgffor@tokstemp\expandafter{\expandafter#1\expandafter=\the#1}% + \pgffor@@addcstotoks} + +\def\pgffor@addiftotoks#1{% + \begingroup% + \escapechar=-1\relax% + \expandafter\pgffor@@addiftotoks\string#1\pgffor@stop} +\def\pgffor@@addiftotoks#1#2#3#4\pgffor@stop{% + \endgroup + \csname if#3#4\endcsname% + \expandafter\def\expandafter\pgffor@tokstemp\expandafter{\csname#3#4true\endcsname}% + \else% + \expandafter\def\expandafter\pgffor@tokstemp\expandafter{\csname#3#4false\endcsname}% + \fi% + \pgffor@@addcstotoks% +} + +\def\pgffor@@addcstotoks{% + \expandafter\expandafter\expandafter\pgffor@toks\expandafter\expandafter\expandafter=% + \expandafter\expandafter\expandafter{\expandafter\pgffor@tokstemp\the\pgffor@toks}% +} + +% Set up the pgffor scopes. + +\def\pgffor@atbeginforeach{% + \begingroup% +} + +\def\pgffor@atendforeach{% + \global\edef\pgffor@remember@expanded{\pgffor@remember@code}% + \ifx\pgffor@remember@expanded\pgfutil@empty% + \else% + \pgffor@remember@expanded% + \global\let\pgffor@remember@expanded=\pgfutil@empty% + \fi% + \endgroup% +} +\def\pgffor@default@begingroup{% + \begingroup% +} + +\let\pgffor@remember@once@expanded=\pgfutil@empty +\let\pgffor@remember@expanded=\pgfutil@empty + +\def\pgffor@default@endgroup{% + \ifx\pgffor@remember@once@code\pgfutil@empty + \else + \xdef\pgffor@remember@once@expanded{\pgffor@remember@once@code}% + \fi + \ifx\pgffor@remember@code\pgfutil@empty + \else + \xdef\pgffor@remember@expanded{\pgffor@remember@code}% + \fi + \endgroup + % + \ifx\pgffor@remember@once@expanded\pgfutil@empty + \else + \pgffor@remember@once@expanded% + % \let\pgffor@assign@once@code=\pgfutil@empty % Not needed anymore? (CJ) + \global\let\pgffor@remember@once@expanded=\pgfutil@empty + \fi + \ifx\pgffor@assign@once@code\pgfutil@empty + \else + \global\let\pgffor@assign@once@code=\pgfutil@empty + \fi + % + \ifx\pgffor@remember@expanded\pgfutil@empty + \else + \pgffor@remember@expanded% + \global\let\pgffor@remember@expanded=\pgfutil@empty + \fi +} + +\let\pgffor@begingroup=\pgffor@default@begingroup +\let\pgffor@endgroup=\pgffor@default@endgroup + + +\def\pgffor@stack@begingroup{% + \pgffor@toks={}% + \pgffor@addcstotoks{\pgffor@mainvar}% + \pgffor@addcstotoks{\pgffor@var}% + \pgffor@addcstotoks{\pgffor@body}% + % + \pgffor@addcstotoks{\pgffor@last}% + \pgffor@addcstotoks{\pgffor@prevlast}% + \pgffor@addcstotoks{\pgffor@dotsend}% + % + \pgffor@addcstotoks{\pgffor@assign@before@code}% + \pgffor@addcstotoks{\pgffor@assign@after@code}% + \pgffor@addcstotoks{\pgffor@remember@code}% + \pgffor@addcstotoks{\pgffor@remember@once@code}% + \pgffor@addcstotoks{\pgffor@dots@pre}% + \pgffor@addcstotoks{\pgffor@dots@post}% + % + \pgffor@addregtotoks{\pgffor@iter}% + \pgffor@addregtotoks{\pgffor@skip}% + % + \pgffor@addiftotoks{\ifpgffor@alphabeticsequence}% + \pgffor@addiftotoks{\ifpgffor@context}% + \expandafter\pgffor@stackpush\expandafter{\the\pgffor@toks}% +} + +\def\pgffor@stack@endgroup{\pgffor@stackpop} + +% Keys stuff. + +\newif\ifpgffor@assign@evaluate +\newif\ifpgffor@assign@once +\newif\ifpgffor@assign@parse + +\pgfkeys{/pgf/foreach/.cd, + var/.code=\pgffor@var@add#1\pgffor@stop, + scope iterations/.code={ + \csname if#1\endcsname% + \let\pgffor@begingroup=\pgffor@default@begingroup% + \let\pgffor@endgroup=\pgffor@default@endgroup% + \else% + \let\pgffor@begingroup=\pgffor@stack@begingroup% + \let\pgffor@endgroup=\pgffor@stack@endgroup% + \fi% + }, + evaluate/.code=\pgffor@assign@evaluatetrue\pgffor@assign@oncefalse\pgffor@assign@parse{#1},% + assign/.code=\pgffor@assign@evaluatefalse\pgffor@assign@oncefalse\pgffor@assign@parse{#1},% + evaluate once/.code=\pgffor@assign@evaluatetrue\pgffor@assign@oncetrue\pgffor@assign@parse{#1},% + assign once/.code=\pgffor@assign@evaluatefalse\pgffor@assign@oncetrue\pgffor@assign@parse{#1},% + remember/.code=\pgffor@remember@parse{#1},% + count/.code=\pgffor@count@parse#1\pgffor@stop, + parse/.is if=pgffor@assign@parse, + parse/.default=false, + expand list/.is if=pgffor@expand@list@, + expand list/.default=true, + expand list=false, +} + +\def\pgffor@assign@parse#1{% + \pgfutil@in@;{#1}% + \ifpgfutil@in@% + \else% + \pgfutil@in@={#1}% + \fi% + \ifpgfutil@in@% + \pgffor@assign@@parse#1;\pgffor@stop;% + \else% + \pgffor@assign@parse@old#1\pgffor@stop%% + \fi% +} + +\def\pgffor@stop{\pgffor@stop} +\def\pgffor@assign@@parse#1;{% + \def\pgffor@test{#1}% + \ifx\pgffor@test\pgffor@stop% + \let\pgffor@next=\relax% + \else% + \let\pgffor@next=\pgffor@assign@@parse% + \ifx\pgffor@test\pgfutil@empty% + \else% + \pgfutil@in@={#1}% + \ifpgfutil@in@% + \pgffor@assign@@@parse#1\pgffor@stop% + \else% + \pgffor@assign@@@parse#1=#1\pgffor@stop% + \fi% + \fi% + \fi% + \pgffor@next} + +\def\pgffor@assign@@@parse#1=#2\pgffor@stop{% + \ifpgffor@assign@evaluate% + \ifpgffor@assign@once% + \pgfutil@append@tomacro{\pgffor@assign@once@code}{\pgfmathparse{#2}\let#1=\pgfmathresult}% + \pgfutil@append@tomacro{\pgffor@remember@once@code}{\noexpand\def\noexpand#1{#2}}% + \else + \pgfutil@append@tomacro{\pgffor@assign@before@code}{\pgfmathparse{#2}\let#1=\pgfmathresult}% + \fi% + \else% + \ifpgffor@assign@once% + \pgfutil@append@tomacro{\pgffor@assign@once@code}{\def#1{#2}}% + \pgfutil@append@tomacro{\pgffor@remember@once@code}{\noexpand\def\noexpand#1{#2}}% + \else + \pgfutil@append@tomacro{\pgffor@assign@before@code}{\def#1{#2}}% + \fi% + \fi% +} + +\def\pgffor@assign@parse@old#1#2\pgffor@stop{% + \pgffor@assign@@parse@old#2\pgffor@stop as#1using #1\pgffor@@stop} + +\def\pgffor@assign@@parse@old#1as#2#3\pgffor@@stop{% + \pgffor@assign@@@parse@old{#2}#1#3\pgffor@stop\pgffor@@stop} + +\def\pgffor@assign@@@parse@old#1#2using #3\pgffor@stop#4\pgffor@@stop{% + \pgffor@assign@@@parse#1=#3\pgffor@stop} + + + +\def\pgffor@remember@parse#1{% + \pgfutil@in@ a{#1}% This matches the 'a' in 'as' or 'initially'. + \ifpgfutil@in@% + \pgffor@remember@parse@old#1\pgffor@stop% + \else% + \pgffor@remember@@parse#1;\pgffor@stop;% + \fi% +} + +\def\pgffor@remember@@parse#1;{% + \def\pgffor@test{#1}% + \ifx\pgffor@test\pgffor@stop% + \let\pgffor@next=\relax% + \else% + \let\pgffor@next=\pgffor@remember@@parse% + \ifx\pgffor@test\pgfutil@empty% + \else% + \pgfutil@in@={#1}% + \ifpgfutil@in@% + \pgffor@remember@@@parse#1\pgffor@stop% + \else% + \pgffor@ifcsregister{#1}{% + \pgfutil@append@tomacro{\pgffor@remember@code}{\noexpand#1=\the#1\noexpand\relax}% + }% + {% + \pgfutil@append@tomacro{\pgffor@remember@code}{\noexpand\def\noexpand#1{#1}}% + }% + \fi% + \fi% + \fi% + \pgffor@next% +} + +\def\pgffor@remember@@@parse#1=#2\pgffor@stop{% + \pgffor@ifcsregister{#2}{% + \pgfutil@append@tomacro{\pgffor@assign@after@code}{\expandafter\def\expandafter#1\expandafter{\the#2}}% + \pgfutil@append@tomacro{\pgffor@remember@code}{\noexpand\def\noexpand#1{#1}}% + }% + {% + \pgfutil@append@tomacro{\pgffor@assign@after@code}{\expandafter\def\expandafter#1\expandafter{#2}}% + \pgfutil@append@tomacro{\pgffor@remember@code}{\noexpand\def\noexpand#1{#1}}% + }% +} + +\def\pgffor@remember@parse@old#1#2\pgffor@stop{% + \pgffor@remember@@parse@old#1#2\pgffor@stop as#1(initially 0)\pgffor@@stop} + +\def\pgffor@remember@@parse@old#1#2as#3#4\pgffor@@stop{% + \pgffor@remember@@@parse@old{#1}{#3}#2#4\pgffor@stop\pgffor@@stop} + +\def\pgffor@remember@@@parse@old#1#2#3(initially #4)#5\pgffor@stop#6\pgffor@@stop{% + \pgfutil@append@tomacro{\pgffor@assign@after@code}{\edef#2{#1}}% + \pgfutil@append@tomacro{\pgffor@remember@code}{\noexpand\def\noexpand#2{#2}}% + \pgfutil@append@tomacro{\pgffor@assign@once@code}{\def#2{#4}}% +} + +\def\pgffor@count@parse#1#2\pgffor@stop{% + \pgffor@count@@parse#1#2\pgffor@stop from 1\pgffor@stop\pgffor@@stop} + +\def\pgffor@count@@parse#1#2from#3\pgffor@stop#4\pgffor@@stop{% + \pgfutil@append@tomacro\pgffor@remember@code{\noexpand\def\noexpand#1{#1}}% + \pgfutil@append@tomacro\pgffor@assign@before@code{\pgfmathparse{int(#1+1)}\let#1=\pgfmathresult}% + \pgfmathparse{int(#3-1)}\let#1=\pgfmathresult% +} + + +\def\pgfutil@append@macrotomacro#1#2{% + \expandafter\expandafter\expandafter\def\expandafter\expandafter\expandafter% + #1\expandafter\expandafter\expandafter{\expandafter#1#2}} + +\def\pgfutil@append@tomacro#1#2{% + \expandafter\def\expandafter#1\expandafter{#1#2}} + + +\endinput |