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author | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
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committer | Norbert Preining <norbert@preining.info> | 2019-09-02 13:46:59 +0900 |
commit | e0c6872cf40896c7be36b11dcc744620f10adf1d (patch) | |
tree | 60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/latex/contrib/williams/toklist.sty |
Initial commit
Diffstat (limited to 'macros/latex/contrib/williams/toklist.sty')
-rw-r--r-- | macros/latex/contrib/williams/toklist.sty | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/macros/latex/contrib/williams/toklist.sty b/macros/latex/contrib/williams/toklist.sty new file mode 100644 index 0000000000..18da421939 --- /dev/null +++ b/macros/latex/contrib/williams/toklist.sty @@ -0,0 +1,44 @@ +%% Copyright 1994 Peter Williams +% +% This work may be distributed and/or modified under the +% conditions of the LaTeX Project Public License, either version 1.3 +% of this license or (at your option) any later version. +% The latest version of this license is in +% http://www.latex-project.org/lppl.txt +% and version 1.3 or later is part of all distributions of LaTeX +% version 2005/12/01 or later. +% +% This work has the LPPL maintenance status `maintained'. +% +% The Current Maintainer of this work is Peter Williams. +% +% This work consists of the files antree.sty and toklist.sty. +% +%% Copyright notice and licence statement added on behalf of +%% Peter Williams by Clea F. Rees 2009/01/30. +% +% Impliment token list macros from pages 378-379 of "The TeXbook" by D.E. Knuth +% ISBN 0-201-13448-9 + +\newtoks\TOKL@ta +\newtoks\TOKL@tb +\long\def\TOKL@prepend#1\to#2{\TOKL@ta={\\{#1}}\TOKL@tb=\expandafter{#2}% + \edef#2{\the\TOKL@ta\the\TOKL@tb}} +\long\def\TOKL@prependv#1\to#2{\TOKL@ta={\\}\TOKL@tb=\expandafter{#2}% + \edef#2{\the\TOKL@ta{#1}\the\TOKL@tb}} +\long\def\TOKL@append#1\to#2{\TOKL@ta={\\{#1}}\TOKL@tb=\expandafter{#2}% + \edef#2{\the\TOKL@tb\the\TOKL@ta}} +\long\def\TOKL@appendv#1\to#2{\TOKL@ta={\\}\TOKL@tb=\expandafter{#2}% + \edef#2{\the\TOKL@tb\the\TOKL@ta{#1}}} +\def\TOK@concat#1=#2{\TOK@ta=\expandafter{#2}\TOK@tb=\expandafter{#3}% + \edef#1{\the\TOKL@ta\the\TOKL@tb}} + +\def\TOKL@lop#1\to#2{\expandafter\TOKL@lopoff#1\TOKL@lopoff#1#2} +\long\def\TOKL@lopoff\\#1#2\TOKL@lopoff#3#4{\def#4{#1}\def#3{#2}} + +\def\TOK@card#1\to#2{#2=0 \long\def\\##1{\advance#2 by 1 }#1} + +\def\TOK@select#1\of#2\to#3{\def#3{\outofrange}% + \long\def\\##1{\advance#1-1 \ifnum#1=0 \def#3{##1}\fi}#2} + +\def\TOK@empty#1{\ifx#1\empty true\else false\fi} |