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Diffstat (limited to 'macros/latex/contrib/lisp-on-tex/lisp-read.sty')
-rw-r--r-- | macros/latex/contrib/lisp-on-tex/lisp-read.sty | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/macros/latex/contrib/lisp-on-tex/lisp-read.sty b/macros/latex/contrib/lisp-on-tex/lisp-read.sty new file mode 100644 index 0000000000..bcfb7fd4fa --- /dev/null +++ b/macros/latex/contrib/lisp-on-tex/lisp-read.sty @@ -0,0 +1,122 @@ +%% +%% This is file `lisp-read.sty'. +%% +%% License: Modified BSD - see LICENSE file +%% + +%% End Of Input(EOI) +\def\@end@lispread{\@@end@lispread} + +%% Reader Macro +%% @param #1 callback function (which gets a S-exp and do something) +%% @param #2 the first letter of the input or EOI +%% @return #1\@tlabel@xxx{contents} +\def\@lispread#1#2{\begingroup\@lispread@main#1#2} + +%% The first branch +%% @param #1 callback function +%% @param #2 the first letter of the input or EOI +\def\@lispread@main#1#2{% Define \@@next, the continuation. + \if\noexpand#2(% [Branch 1] CONS cell or NIL + \def\@@next{\@lispread@cell#1}% + \else\ifcat\noexpand#2\relax% [Branch 2] A control sequence or a control symbol + \ifx#2\@end@lispread % [Branch 2-1] EOI + \def\@@next{\endgroup#1% + \@tlabel@exception{{-1}{\@tlabel@string{!Found End of Input!}}}}% + \else + \def\@@next{\@lispread@symbol#1#2}% [Branch 2-2] Symbol + \fi + \else\if\noexpand#2'% [Branch 3] String + \def\@@next{\@lispread@string#1\@lispread@string@dummy}% + \else\if\noexpand#2/% [Branch 4] Boolean + \def\@@next{\@lispread@bool#1}% + \else\if\noexpand#2:% [Branch 5] Integer + \def\@@next{\@lispread@int#1}% + \else\if\noexpand#2!% [Branch 6] Dimension + \def\@@next{\@lispread@dimen#1}% + \else\if\noexpand#2@% [Branch 7] Skip + \def\@@next{\@lispread@skip#1}% + \else\if\noexpand#2+% [Branch 8] call a Reader Module + \def\@@next{\@lispread@module#1}% + \else % Otherwise -- parse error + \errmessage{LISP on teX [read]: no such type start with \noexpand#2}% + \fi\fi\fi\fi\fi\fi\fi\fi + \@@next} +%% Symbol +\def\@lispread@symbol#1#2{% + \endgroup#1\@tlabel@symbol{#2}} +%% String +\def\@lispread@string@dummy{} % to avoid consuming group +\def\@lispread@string#1#2'{% + \endgroup\expandafter#1\expandafter\@tlabel@string\expandafter{#2}} +%% Boolean +\def\@lispread@bool#1#2{% + \endgroup#1\@tlabel@bool{#2}} +%% Reader Module +\def\@lispread@module#1#2{% + \@lispread@module@main\@register@lispread@module#2\@@end + \endgroup + \expandafter#1\@register@lispread@module} +\def\@lispread@module@main#1#2::#3\@@end{\csname @mod@read@#2\endcsname#1{#3}} +%% Integer +\newcount\@cnt@lispread@int +\def\@lispread@int#1{% + \gdef\@lispread@int@callback{\@lispread@int@main#1}% + \afterassignment\@lispread@int@callback + \global\@cnt@lispread@int} +\def\@lispread@int@main#1{% + \endgroup\expandafter#1\expandafter\@tlabel@int\expandafter{\the\@cnt@lispread@int}} +%% Skip +\newskip\@cnt@lispread@skip +\def\@lispread@skip#1{% + \gdef\@lispread@skip@callback{\@lispread@skip@main#1}% + \afterassignment\@lispread@skip@callback + \global\@cnt@lispread@skip} +\def\@lispread@skip@main#1{% + \endgroup\expandafter#1\expandafter\@tlabel@skip\expandafter{\the\@cnt@lispread@skip}} +%% Dimen +\newdimen\@cnt@lispread@dimen +\def\@lispread@dimen#1{% + \gdef\@lispread@dimen@callback{\@lispread@dimen@main#1}% + \afterassignment\@lispread@dimen@callback + \global\@cnt@lispread@dimen} +\def\@lispread@dimen@main#1{% + \endgroup\expandafter#1\expandafter\@tlabel@dimen\expandafter{\the\@cnt@lispread@dimen}} +%% CONS cell or NIL +\def\@lispread@cell#1#2{% + \if\noexpand#2)% [Branch 1] NIL + \def\@@next{\endgroup#1\@tlabel@nil{}}% + \else % Otherwise CONS cell + \def\@@next{\@lispread@cell@car#1#2}% + \fi\@@next} +%% first part of CONS cell : read CAR +\def\@lispread@cell@car#1{% + \def\@lispread@car@reg##1##2{% + \def\@reg@lispread@car{##1{##2}}% + \@lispread@cell@dot#1}% + \@lispread\@lispread@car@reg} +\def\@lispread@cell@dot#1#2{% + \if\noexpand#2.% + \def\@@next{% + \def\@lispread@cell@fincheck####1####2{% + \def\@reg@lispread@cdr{####1{####2}}% + \@lispread@fin#1}% + \@lispread\@lispread@cell@fincheck}% kokonaosu + \else + \def\@@next{\@lispread@cell@cdr#1(#2}% + \fi\@@next} +\def\@lispread@cell@cdr#1{% + \def\@lispread@cdr@reg##1##2{% + \expandafter\@lisp@perform@cons@local\expandafter\@reg@tmp\@reg@lispread@car##1{##2}% + \expandafter\endgroup\expandafter#1\@reg@tmp}% + \@lispread\@lispread@cdr@reg} +\def\@lispread@fin#1#2{% + \if\noexpand#2)% + \def\@@next{% + \expandafter\expandafter\expandafter\@lisp@perform@cons@local + \expandafter\expandafter\expandafter\@reg@tmp + \expandafter\@reg@lispread@car\@reg@lispread@cdr + \expandafter\endgroup\expandafter#1\@reg@tmp}% + \else + \def\@@next{\errmessage{LISP on teX [read]: missing )}}% + \fi\@@next} |