1203 lines
29 KiB
TeX
1203 lines
29 KiB
TeX
% rail.sty - style file to support railroad diagrams
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%
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% 09-Jul-90 L. Rooijakkers
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% 08-Oct-90 L. Rooijakkers fixed centering bug when \rail@tmpc<0.
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% 07-Feb-91 L. Rooijakkers added \railoptions command, indexing
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% 08-Feb-91 L. Rooijakkers minor fixes
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% 28-Jun-94 K. Barthelmann turned into LaTeX2e package
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% 08-Dec-96 K. Barthelmann replaced \@writefile
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% 13-Dec-96 K. Barthelmann cleanup
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% 22-Feb-98 K. Barthelmann fixed catcodes of special characters
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% 18-Apr-98 K. Barthelmann fixed \par handling
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% 19-May-98 J. Olsson Added new macros to support arrow heads.
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% 26-Jul-98 K. Barthelmann changed \par to output newlines
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% 02-May-11 M. Wenzel default setup for Isabelle
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%
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% This style file needs to be used in conjunction with the 'rail'
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% program. Running LaTeX as 'latex file' produces file.rai, which should be
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% processed by Rail with 'rail file'. This produces file.rao, which will
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% be picked up by LaTeX on the next 'latex file' run.
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%
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% LaTeX will warn if there is no file.rao or it's out of date.
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%
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% The macros in this file thus consist of two parts: those that read and
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% write the .rai and .rao files, and those that do the actual formatting
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% of the railroad diagrams.
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\NeedsTeXFormat{LaTeX2e}
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\ProvidesPackage{rail}[1998/05/19]
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% railroad diagram formatting parameters (user level)
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% all of these are copied into their internal versions by \railinit
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%
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% \railunit : \unitlength within railroad diagrams
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% \railextra : extra length at outside of diagram
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% \railboxheight : height of ovals and frames
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% \railboxskip : vertical space between lines
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% \railboxleft : space to the left of a box
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% \railboxright : space to the right of a box
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% \railovalspace : extra space around contents of oval
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% \railframespace : extra space around contents of frame
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% \railtextleft : space to the left of text
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% \railtextright : space to the right of text
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% \railtextup : space to lift text up
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% \railjoinsize : circle size of join/split arcs
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% \railjoinadjust : space to adjust join
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%
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% \railnamesep : separator between name and rule body
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\newlength\railunit
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\newlength\railextra
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\newlength\railboxheight
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\newlength\railboxskip
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\newlength\railboxleft
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\newlength\railboxright
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\newlength\railovalspace
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\newlength\railframespace
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\newlength\railtextleft
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\newlength\railtextright
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\newlength\railtextup
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\newlength\railjoinsize
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\newlength\railjoinadjust
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\newlength\railnamesep
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% initialize the parameters
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\setlength\railunit{1sp}
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\setlength\railextra{4ex}
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\setlength\railboxleft{1ex}
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\setlength\railboxright{1ex}
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\setlength\railovalspace{2ex}
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\setlength\railframespace{2ex}
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\setlength\railtextleft{1ex}
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\setlength\railtextright{1ex}
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\setlength\railjoinadjust{0pt}
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\setlength\railnamesep{1ex}
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\DeclareOption{10pt}{
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\setlength\railboxheight{16pt}
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\setlength\railboxskip{24pt}
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\setlength\railtextup{5pt}
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\setlength\railjoinsize{16pt}
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}
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\DeclareOption{11pt}{
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\setlength\railboxheight{16pt}
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\setlength\railboxskip{24pt}
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\setlength\railtextup{5pt}
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\setlength\railjoinsize{16pt}
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}
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\DeclareOption{12pt}{
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\setlength\railboxheight{20pt}
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\setlength\railboxskip{28pt}
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\setlength\railtextup{6pt}
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\setlength\railjoinsize{20pt}
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}
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\ExecuteOptions{10pt}
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\ProcessOptions
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% internal versions of the formatting parameters
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%
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% \rail@extra : \railextra
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% \rail@boxht : \railboxheight
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% \rail@boxsp : \railboxskip
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% \rail@boxlf : \railboxleft
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% \rail@boxrt : \railboxright
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% \rail@boxhht : \railboxheight / 2
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% \rail@ovalsp : \railovalspace
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% \rail@framesp : \railframespace
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% \rail@textlf : \railtextleft
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% \rail@textrt : \railtextright
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% \rail@textup : \railtextup
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% \rail@joinsz : \railjoinsize
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% \rail@joinhsz : \railjoinsize / 2
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% \rail@joinadj : \railjoinadjust
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%
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% \railinit : internalize all of the parameters.
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\newcount\rail@extra
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\newcount\rail@boxht
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\newcount\rail@boxsp
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\newcount\rail@boxlf
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\newcount\rail@boxrt
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\newcount\rail@boxhht
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\newcount\rail@ovalsp
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\newcount\rail@framesp
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\newcount\rail@textlf
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\newcount\rail@textrt
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\newcount\rail@textup
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\newcount\rail@joinsz
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\newcount\rail@joinhsz
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\newcount\rail@joinadj
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\newcommand\railinit{
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\rail@extra=\railextra
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\divide\rail@extra by \railunit
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\rail@boxht=\railboxheight
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\divide\rail@boxht by \railunit
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\rail@boxsp=\railboxskip
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\divide\rail@boxsp by \railunit
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\rail@boxlf=\railboxleft
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\divide\rail@boxlf by \railunit
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\rail@boxrt=\railboxright
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\divide\rail@boxrt by \railunit
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\rail@boxhht=\railboxheight
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\divide\rail@boxhht by \railunit
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\divide\rail@boxhht by 2
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\rail@ovalsp=\railovalspace
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\divide\rail@ovalsp by \railunit
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\rail@framesp=\railframespace
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\divide\rail@framesp by \railunit
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\rail@textlf=\railtextleft
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\divide\rail@textlf by \railunit
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\rail@textrt=\railtextright
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\divide\rail@textrt by \railunit
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\rail@textup=\railtextup
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\divide\rail@textup by \railunit
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\rail@joinsz=\railjoinsize
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\divide\rail@joinsz by \railunit
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\rail@joinhsz=\railjoinsize
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\divide\rail@joinhsz by \railunit
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\divide\rail@joinhsz by 2
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\rail@joinadj=\railjoinadjust
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\divide\rail@joinadj by \railunit
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}
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\AtBeginDocument{\railinit}
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% \rail@param : declarations for list environment
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%
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% \railparam{TEXT} : sets \rail@param to TEXT
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%
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% \rail@reserved : characters reserved for grammar
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\newcommand\railparam[1]{
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\def\rail@param{
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\setlength\leftmargin{0pt}\setlength\rightmargin{0pt}
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\setlength\labelwidth{0pt}\setlength\labelsep{0pt}
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\setlength\itemindent{0pt}\setlength\listparindent{0pt}
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#1
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}
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}
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\railparam{}
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\newtoks\rail@reserved
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\rail@reserved={:;|*+?[]()'"}
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% \rail@termfont : format setup for terminals
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%
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% \rail@nontfont : format setup for nonterminals
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%
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% \rail@annofont : format setup for annotations
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%
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% \rail@rulefont : format setup for rule names
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%
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% \rail@indexfont : format setup for index entry
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%
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% \railtermfont{TEXT} : set terminal format setup to TEXT
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%
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% \railnontermfont{TEXT} : set nonterminal format setup to TEXT
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%
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% \railannotatefont{TEXT} : set annotation format setup to TEXT
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%
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% \railnamefont{TEXT} : set rule name format setup to TEXT
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%
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% \railindexfont{TEXT} : set index entry format setup to TEXT
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\def\rail@termfont{\ttfamily\upshape}
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\def\rail@nontfont{\rmfamily\upshape}
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\def\rail@annofont{\rmfamily\itshape}
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\def\rail@namefont{\rmfamily\itshape}
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\def\rail@indexfont{\rmfamily\itshape}
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\newcommand\railtermfont[1]{
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\def\rail@termfont{#1}
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}
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\newcommand\railnontermfont[1]{
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\def\rail@nontfont{#1}
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}
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\newcommand\railannotatefont[1]{
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\def\rail@annofont{#1}
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}
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\newcommand\railnamefont[1]{
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\def\rail@namefont{#1}
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}
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\newcommand\railindexfont[1]{
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\def\rail@indexfont{#1}
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}
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% railroad read/write macros
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%
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% \begin{rail} TEXT \end{rail} : TEXT is written out to the .rai file,
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% as \rail@i{NR}{TEXT}. Then the matching
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% \rail@o{NR}{FMT} from the .rao file is
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% executed (if defined).
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%
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% \railoptions{OPTIONS} : OPTIONS are written out to the .rai file,
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% as \rail@p{OPTIONS}.
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%
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% \railterm{IDENT,IDENT,...} : format IDENT as terminals. writes out
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% \rail@t{IDENT} to the .rai file
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%
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% \railalias{IDENT}{TEXT} : format IDENT as TEXT. defines \rail@t@IDENT as
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% TEXT.
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%
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% \railtoken{IDENT}{TEXT} : abbreviates \railalias{IDENT}{TEXT}\railterm{IDENT}
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% (for backward compatibility)
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%
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% \rail@setcodes : guards special characters
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%
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% \rail@makeother{CHARACTER} : sets \catcode of CHARACTER to "other"
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% used inside a loop for \rail@setcodes
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%
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% \rail@nr : railroad diagram counter
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%
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% \ifrail@match : current \rail@i{NR}{TEXT} matches
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%
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% \rail@first : actions to be done first. read in .rao file,
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% open .rai file if \@filesw true, undefine \rail@first.
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% executed from \begin{rail}, \railoptions and \railterm.
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%
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% \rail@i{NR}{TEXT} : defines \rail@i@NR as TEXT. written to the .rai
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% file by \rail, read from the .rao file by
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% \rail@first
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%
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% \rail@t{IDENT} : tells Rail that IDENT is to be custom formatted,
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% written to the .rai file by \railterm.
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%
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% \rail@o{NR}{TEXT} : defines \rail@o@NR as TEXT, read from the .rao
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% file by \rail@first.
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%
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% \rail@p{OPTIONS} : pass options to rail, written to the .rai file by
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% \railoptions
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%
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% \rail@write{TEXT} : write TEXT to the .rai file
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%
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% \rail@warn : warn user for mismatching diagrams
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%
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% \rail@endwarn : either \relax or \rail@warn
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%
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% \ifrail@all : checked at the end of the document
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\def\rail@makeother#1{
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\expandafter\catcode\expandafter`\csname\string #1\endcsname=12
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}
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\def\rail@setcodes{
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\let\par=\relax
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\let\\=\relax
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\expandafter\@tfor\expandafter\rail@symbol\expandafter:\expandafter=%
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\the\rail@reserved
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\do{\expandafter\rail@makeother\rail@symbol}
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}
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\newcount\rail@nr
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\newif\ifrail@all
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\rail@alltrue
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\newif\ifrail@match
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\def\rail@first{
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\begingroup
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\makeatletter
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\rail@setcodes
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\InputIfFileExists{\jobname.rao}{}{\PackageInfo{rail}{No file \jobname.rao}}
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\makeatother
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\endgroup
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\if@filesw
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\newwrite\tf@rai
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\immediate\openout\tf@rai=\jobname.rai
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\fi
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\global\let\rail@first=\relax
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}
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\long\def\rail@body#1\end{
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{
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\newlinechar=`^^J
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\def\par{\string\par^^J}
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\rail@write{\string\rail@i{\number\rail@nr}{#1}}
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}
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\xdef\rail@i@{#1}
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\end
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}
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\newenvironment{rail}{
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\global\advance\rail@nr by 1
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\rail@first
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\begingroup
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\rail@setcodes
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\rail@body
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}{
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\endgroup
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\rail@matchtrue
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\@ifundefined{rail@o@\number\rail@nr}{\rail@matchfalse}{}
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\expandafter\ifx\csname rail@i@\number\rail@nr\endcsname\rail@i@
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\else
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\rail@matchfalse
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\fi
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\ifrail@match
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\csname rail@o@\number\rail@nr\endcsname
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\else
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\PackageWarning{rail}{Railroad diagram {\number\rail@nr} doesn't match}
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\global\let\rail@endwarn=\rail@warn
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\begin{list}{}{\rail@param}
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\rail@begin{1}{}
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\rail@setbox{\bfseries ???}
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\rail@oval
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\rail@end
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\end{list}
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\fi
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}
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\newcommand\railoptions[1]{
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\rail@first
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\rail@write{\string\rail@p{#1}}
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}
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\newcommand\railterm[1]{
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\rail@first
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\@for\rail@@:=#1\do{
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\rail@write{\string\rail@t{\rail@@}}
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}
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}
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\newcommand\railalias[2]{
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\expandafter\def\csname rail@t@#1\endcsname{#2}
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}
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\newcommand\railtoken[2]{\railalias{#1}{#2}\railterm{#1}}
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\long\def\rail@i#1#2{
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\expandafter\gdef\csname rail@i@#1\endcsname{#2}
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}
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\def\rail@o#1#2{
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\expandafter\gdef\csname rail@o@#1\endcsname{
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\begin{list}{}{\rail@param}
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#2
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\end{list}
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}
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}
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\def\rail@t#1{}
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\def\rail@p#1{}
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\long\def\rail@write#1{\@ifundefined{tf@rai}{}{\immediate\write\tf@rai{#1}}}
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\def\rail@warn{
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\PackageWarningNoLine{rail}{Railroad diagram(s) may have changed.
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Use 'rail' and rerun}
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}
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\let\rail@endwarn=\relax
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\AtEndDocument{\rail@endwarn}
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% index entry macro
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%
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% \rail@index{IDENT} : add index entry for IDENT
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\def\rail@index#1{
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\index{\rail@indexfont#1}
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}
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% railroad formatting primitives
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%
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% \rail@x : current x
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% \rail@y : current y
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% \rail@ex : current end x
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% \rail@sx : starting x for \rail@cr
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% \rail@rx : rightmost previous x for \rail@cr
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%
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% \rail@tmpa : temporary count
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% \rail@tmpb : temporary count
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% \rail@tmpc : temporary count
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%
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% \rail@put : put at (\rail@x,\rail@y)
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% \rail@vput : put vector at (\rail@x,\rail@y)
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%
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% \rail@eline : end line by drawing from \rail@ex to \rail@x
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%
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% \rail@vreline : end line by drawing a vector from \rail@x to \rail@ex
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%
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% \rail@vleline : end line by drawing a vector from \rail@ex to \rail@x
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%
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% \rail@sety{LEVEL} : set \rail@y to level LEVEL
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\newcount\rail@x
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\newcount\rail@y
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\newcount\rail@ex
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\newcount\rail@sx
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\newcount\rail@rx
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\newcount\rail@tmpa
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\newcount\rail@tmpb
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\newcount\rail@tmpc
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\def\rail@put{\put(\number\rail@x,\number\rail@y)}
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\def\rail@vput{\put(\number\rail@ex,\number\rail@y)}
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\def\rail@eline{
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\rail@tmpb=\rail@x
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\advance\rail@tmpb by -\rail@ex
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\rail@put{\line(-1,0){\number\rail@tmpb}}
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}
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\def\rail@vreline{
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\rail@tmpb=\rail@x
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\advance\rail@tmpb by -\rail@ex
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\rail@vput{\vector(1,0){\number\rail@tmpb}}
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}
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\def\rail@vleline{
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\rail@tmpb=\rail@x
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\advance\rail@tmpb by -\rail@ex
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\rail@put{\vector(-1,0){\number\rail@tmpb}}
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}
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\def\rail@sety#1{
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\rail@y=#1
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\multiply\rail@y by -\rail@boxsp
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\advance\rail@y by -\rail@boxht
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}
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% \rail@begin{HEIGHT}{NAME} : begin a railroad diagram of height HEIGHT
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%
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% \rail@end : end a railroad diagram
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%
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% \rail@expand{IDENT} : expand IDENT
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\def\rail@begin#1#2{
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\item
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\begin{minipage}[t]{\linewidth}
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\ifx\@empty#2\else
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{\rail@namefont \rail@expand{#2}}\\*[\railnamesep]
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\fi
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\unitlength=\railunit
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\rail@tmpa=#1
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\multiply\rail@tmpa by \rail@boxsp
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\begin{picture}(0,\number\rail@tmpa)(0,-\number\rail@tmpa)
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\rail@ex=0
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\rail@rx=0
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\rail@x=\rail@extra
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\rail@sx=\rail@x
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\rail@sety{0}
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}
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\def\rail@end{
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\advance\rail@x by \rail@extra
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\rail@eline
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\end{picture}
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\end{minipage}
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}
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\def\rail@vend{
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\advance\rail@x by \rail@extra
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\rail@vreline
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\end{picture}
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\end{minipage}
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}
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\def\rail@expand#1{\@ifundefined{rail@t@#1}{#1}{\csname rail@t@#1\endcsname}}
|
|
|
|
% \rail@token{TEXT}[ANNOT] : format token TEXT with annotation
|
|
% \rail@ltoken{TEXT}[ANNOT] : format token TEXT with annotation, arrow left
|
|
% \rail@rtoken{TEXT}[ANNOT] : format token TEXT with annotation, arrow right
|
|
%
|
|
% \rail@ctoken{TEXT}[ANNOT] : format token TEXT centered with annotation
|
|
% \rail@lctoken{TEXT}[ANNOT] : format token TEXT centered with annotation, arrow left
|
|
% \rail@rctoken{TEXT}[ANNOT] : format token TEXT centered with annotation, arrow right
|
|
%
|
|
% \rail@nont{TEXT}[ANNOT] : format nonterminal TEXT with annotation
|
|
% \rail@lnont{TEXT}[ANNOT] : format nonterminal TEXT with annotation, arrow left
|
|
% \rail@rnont{TEXT}[ANNOT] : format nonterminal TEXT with annotation. arrow right
|
|
%
|
|
% \rail@cnont{TEXT}[ANNOT] : format nonterminal TEXT centered with annotation
|
|
% \rail@lcnont{TEXT}[ANNOT] : format nonterminal TEXT centered with annotation,
|
|
% arrow left
|
|
% \rail@rcnont{TEXT}[ANNOT] : format nonterminal TEXT centered with annotation,
|
|
% arrow right
|
|
%
|
|
% \rail@term{TEXT}[ANNOT] : format terminal TEXT with annotation
|
|
% \rail@lterm{TEXT}[ANNOT] : format terminal TEXT with annotation, arrow left
|
|
% \rail@rterm{TEXT}[ANNOT] : format terminal TEXT with annotation, arrow right
|
|
%
|
|
% \rail@cterm{TEXT}[ANNOT] : format terminal TEXT centered with annotation
|
|
% \rail@lcterm{TEXT}[ANNOT] : format terminal TEXT centered with annotation, arrow left
|
|
% \rail@rcterm{TEXT}[ANNOT] : format terminal TEXT centered with annotation,
|
|
% arrow right
|
|
%
|
|
% \rail@annote[TEXT] : format TEXT as annotation
|
|
|
|
\def\rail@token#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@oval
|
|
}
|
|
|
|
\def\rail@ltoken#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vloval
|
|
}
|
|
|
|
\def\rail@rtoken#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vroval
|
|
}
|
|
|
|
\def\rail@ctoken#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@coval
|
|
}
|
|
|
|
\def\rail@lctoken#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vlcoval
|
|
}
|
|
|
|
\def\rail@rctoken#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vrcoval
|
|
}
|
|
|
|
\def\rail@nont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@frame
|
|
}
|
|
|
|
\def\rail@lnont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vlframe
|
|
}
|
|
|
|
\def\rail@rnont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vrframe
|
|
}
|
|
|
|
\def\rail@cnont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@cframe
|
|
}
|
|
|
|
\def\rail@lcnont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vlcframe
|
|
}
|
|
|
|
\def\rail@rcnont#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@nontfont \rail@expand{#1}}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vrcframe
|
|
}
|
|
|
|
\def\rail@term#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@oval
|
|
}
|
|
|
|
\def\rail@lterm#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vloval
|
|
}
|
|
|
|
\def\rail@rterm#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vroval
|
|
}
|
|
|
|
\def\rail@cterm#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@coval
|
|
}
|
|
|
|
\def\rail@lcterm#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vlcoval
|
|
}
|
|
|
|
\def\rail@rcterm#1[#2]{
|
|
\rail@setbox{%
|
|
{\rail@termfont #1}\ifx\@empty#2\else\ {\rail@annofont #2}\fi
|
|
}
|
|
\rail@vrcoval
|
|
}
|
|
|
|
\def\rail@annote[#1]{
|
|
\rail@setbox{\rail@annofont #1}
|
|
\rail@text
|
|
}
|
|
|
|
% \rail@box : temporary box for \rail@oval and \rail@frame
|
|
%
|
|
% \rail@setbox{TEXT} : set \rail@box to TEXT, set \rail@tmpa to width
|
|
%
|
|
% \rail@oval : format \rail@box of width \rail@tmpa inside an oval
|
|
% \rail@vloval : format \rail@box of width \rail@tmpa inside an oval, vector left
|
|
% \rail@vroval : format \rail@box of width \rail@tmpa inside an oval, vector right
|
|
%
|
|
% \rail@coval : same as \rail@oval, but centered between \rail@x and
|
|
% \rail@mx
|
|
% \rail@vlcoval : same as \rail@oval, but centered between \rail@x and
|
|
% \rail@mx, vector left
|
|
% \rail@vrcoval : same as \rail@oval, but centered between \rail@x and
|
|
% \rail@mx, vector right
|
|
%
|
|
% \rail@frame : format \rail@box of width \rail@tmpa inside a frame
|
|
% \rail@vlframe : format \rail@box of width \rail@tmpa inside a frame, vector left
|
|
% \rail@vrframe : format \rail@box of width \rail@tmpa inside a frame, vector right
|
|
%
|
|
% \rail@cframe : same as \rail@frame, but centered between \rail@x and
|
|
% \rail@mx
|
|
% \rail@vlcframe : same as \rail@frame, but centered between \rail@x and
|
|
% \rail@mx, vector left
|
|
% \rail@vrcframe : same as \rail@frame, but centered between \rail@x and
|
|
% \rail@mx, vector right
|
|
%
|
|
% \rail@text : format \rail@box of width \rail@tmpa above the line
|
|
|
|
\newbox\rail@box
|
|
|
|
\def\rail@setbox#1{
|
|
\setbox\rail@box\hbox{\strut#1}
|
|
\rail@tmpa=\wd\rail@box
|
|
\divide\rail@tmpa by \railunit
|
|
}
|
|
|
|
\def\rail@oval{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@eline
|
|
\advance\rail@tmpa by \rail@ovalsp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\rail@tmpb=\rail@tmpa
|
|
\divide\rail@tmpb by 2
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\makebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@put{\oval(\number\rail@tmpa,\number\rail@boxht)}
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
}
|
|
|
|
\def\rail@vloval{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@eline
|
|
\advance\rail@tmpa by \rail@ovalsp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\rail@tmpb=\rail@tmpa
|
|
\divide\rail@tmpb by 2
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\makebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@put{\oval(\number\rail@tmpa,\number\rail@boxht)}
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
\rail@vleline
|
|
}
|
|
|
|
\def\rail@vroval{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@vreline
|
|
\advance\rail@tmpa by \rail@ovalsp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\rail@tmpb=\rail@tmpa
|
|
\divide\rail@tmpb by 2
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\makebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@put{\oval(\number\rail@tmpa,\number\rail@boxht)}
|
|
\advance\rail@x by \rail@tmpb
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
}
|
|
|
|
\def\rail@coval{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@ovalsp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@oval
|
|
}
|
|
|
|
\def\rail@vlcoval{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@ovalsp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@vloval
|
|
}
|
|
|
|
\def\rail@vrcoval{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@ovalsp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@vroval
|
|
}
|
|
|
|
\def\rail@frame{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@eline
|
|
\advance\rail@tmpa by \rail@framesp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\framebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpa
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
}
|
|
|
|
\def\rail@vlframe{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@eline
|
|
\advance\rail@tmpa by \rail@framesp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\framebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpa
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
\rail@vleline
|
|
}
|
|
|
|
\def\rail@vrframe{
|
|
\advance\rail@x by \rail@boxlf
|
|
\rail@vreline
|
|
\advance\rail@tmpa by \rail@framesp
|
|
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
|
\advance\rail@y by -\rail@boxhht
|
|
\rail@put{\framebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
|
\advance\rail@y by \rail@boxhht
|
|
\advance\rail@x by \rail@tmpa
|
|
\rail@ex=\rail@x
|
|
\advance\rail@x by \rail@boxrt
|
|
}
|
|
|
|
\def\rail@cframe{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@framesp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@frame
|
|
}
|
|
|
|
\def\rail@vlcframe{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@framesp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@vlframe
|
|
}
|
|
|
|
\def\rail@vrcframe{
|
|
\rail@tmpb=\rail@tmpa
|
|
\advance\rail@tmpb by \rail@framesp
|
|
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
|
\advance\rail@tmpb by \rail@boxlf
|
|
\advance\rail@tmpb by \rail@boxrt
|
|
\rail@tmpc=\rail@mx
|
|
\advance\rail@tmpc by -\rail@x
|
|
\advance\rail@tmpc by -\rail@tmpb
|
|
\divide\rail@tmpc by 2
|
|
\ifnum\rail@tmpc>0
|
|
\advance\rail@x by \rail@tmpc
|
|
\fi
|
|
\rail@vrframe
|
|
}
|
|
|
|
\def\rail@text{
|
|
\advance\rail@x by \rail@textlf
|
|
\advance\rail@y by \rail@textup
|
|
\rail@put{\box\rail@box}
|
|
\advance\rail@y by -\rail@textup
|
|
\advance\rail@x by \rail@tmpa
|
|
\advance\rail@x by \rail@textrt
|
|
}
|
|
|
|
% alternatives
|
|
%
|
|
% \rail@jx \rail@jy : current join point
|
|
%
|
|
% \rail@gx \rail@gy \rail@gex \rail@grx : global versions of \rail@x etc,
|
|
% to pass values over group closings
|
|
%
|
|
% \rail@mx : maximum x so far
|
|
%
|
|
% \rail@sy : starting \rail@y for alternatives
|
|
%
|
|
% \rail@jput : put at (\rail@jx,\rail@jy)
|
|
%
|
|
% \rail@joval[PART] : put \oval[PART] with adjust
|
|
|
|
\newcount\rail@jx
|
|
\newcount\rail@jy
|
|
|
|
\newcount\rail@gx
|
|
\newcount\rail@gy
|
|
\newcount\rail@gex
|
|
\newcount\rail@grx
|
|
|
|
\newcount\rail@sy
|
|
\newcount\rail@mx
|
|
|
|
\def\rail@jput{
|
|
\put(\number\rail@jx,\number\rail@jy)
|
|
}
|
|
|
|
\def\rail@joval[#1]{
|
|
\advance\rail@jx by \rail@joinadj
|
|
\rail@jput{\oval(\number\rail@joinsz,\number\rail@joinsz)[#1]}
|
|
\advance\rail@jx by -\rail@joinadj
|
|
}
|
|
|
|
% \rail@barsplit : incoming split for '|'
|
|
%
|
|
% \rail@plussplit : incoming split for '+'
|
|
%
|
|
|
|
\def\rail@barsplit{
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\rail@joval[tr]
|
|
\advance\rail@jx by \rail@joinhsz
|
|
}
|
|
|
|
\def\rail@plussplit{
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\advance\rail@jx by \rail@joinsz
|
|
\rail@joval[tl]
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
}
|
|
|
|
% \rail@alt{SPLIT} : start alternatives with incoming split SPLIT
|
|
%
|
|
|
|
\def\rail@alt#1{
|
|
\rail@sy=\rail@y
|
|
\rail@jx=\rail@x
|
|
\rail@jy=\rail@y
|
|
\advance\rail@x by \rail@joinsz
|
|
\rail@mx=0
|
|
\let\rail@list=\@empty
|
|
\let\rail@comma=\@empty
|
|
\let\rail@split=#1
|
|
\begingroup
|
|
\rail@sx=\rail@x
|
|
\rail@rx=0
|
|
}
|
|
|
|
% \rail@nextalt{FIX}{Y} : start next alternative at vertical position Y
|
|
% and fix-up FIX
|
|
%
|
|
|
|
\def\rail@nextalt#1#2{
|
|
\global\rail@gx=\rail@x
|
|
\global\rail@gy=\rail@y
|
|
\global\rail@gex=\rail@ex
|
|
\global\rail@grx=\rail@rx
|
|
\endgroup
|
|
#1
|
|
\ifnum\rail@gx>\rail@mx\rail@mx=\rail@gx\fi
|
|
\ifnum\rail@grx>\rail@mx\rail@mx=\rail@grx\fi
|
|
\edef\rail@list{\rail@list\rail@comma\number\rail@gex:\number\rail@gy}
|
|
\def\rail@comma{,}
|
|
\rail@split
|
|
\let\rail@split=\@empty
|
|
\rail@sety{#2}
|
|
\rail@tmpa=\rail@jy
|
|
\advance\rail@tmpa by -\rail@y
|
|
\advance\rail@tmpa by -\rail@joinhsz
|
|
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
|
\rail@jy=\rail@y
|
|
\advance\rail@jy by \rail@joinhsz
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\rail@joval[bl]
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
\rail@ex=\rail@x
|
|
\begingroup
|
|
\rail@sx=\rail@x
|
|
\rail@rx=0
|
|
}
|
|
|
|
% \rail@barjoin : outgoing join for first '|' alternative
|
|
%
|
|
% \rail@plusjoin : outgoing join for first '+' alternative
|
|
%
|
|
% \rail@altjoin : join for subsequent alternative
|
|
%
|
|
|
|
\def\rail@barjoin{
|
|
\ifnum\rail@y<\rail@sy
|
|
\global\rail@gex=\rail@jx
|
|
\else
|
|
\global\rail@gex=\rail@ex
|
|
\fi
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\rail@joval[tl]
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
\ifnum\rail@y<\rail@sy
|
|
\rail@altjoin
|
|
\fi
|
|
}
|
|
|
|
\def\rail@plusjoin{
|
|
\global\rail@gex=\rail@ex
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\advance\rail@jx by -\rail@joinsz
|
|
\rail@joval[tr]
|
|
\advance\rail@jx by \rail@joinhsz
|
|
}
|
|
|
|
\def\rail@altjoin{
|
|
\rail@eline
|
|
\rail@tmpa=\rail@jy
|
|
\advance\rail@tmpa by -\rail@y
|
|
\advance\rail@tmpa by -\rail@joinhsz
|
|
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
|
\rail@jy=\rail@y
|
|
\advance\rail@jy by \rail@joinhsz
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
\rail@joval[br]
|
|
\advance\rail@jx by \rail@joinhsz
|
|
}
|
|
|
|
% \rail@eltsplit EX:Y; : split EX:Y into \rail@ex \rail@y
|
|
%
|
|
% \rail@endalt{JOIN} : end alternatives with outgoing join JOIN
|
|
|
|
\def\rail@eltsplit#1:#2;{\rail@ex=#1\rail@y=#2}
|
|
|
|
\def\rail@endalt#1{
|
|
\global\rail@gx=\rail@x
|
|
\global\rail@gy=\rail@y
|
|
\global\rail@gex=\rail@ex
|
|
\global\rail@grx=\rail@rx
|
|
\endgroup
|
|
\ifnum\rail@gx>\rail@mx\rail@mx=\rail@gx\fi
|
|
\ifnum\rail@grx>\rail@mx\rail@mx=\rail@grx\fi
|
|
\edef\rail@list{\rail@list\rail@comma\number\rail@gex:\number\rail@gy}
|
|
\rail@x=\rail@mx
|
|
\rail@jx=\rail@x
|
|
\rail@jy=\rail@sy
|
|
\advance\rail@jx by \rail@joinsz
|
|
\let\rail@join=#1
|
|
\@for\rail@elt:=\rail@list\do{
|
|
\expandafter\rail@eltsplit\rail@elt;
|
|
\rail@join
|
|
\let\rail@join=\rail@altjoin
|
|
}
|
|
\rail@x=\rail@mx
|
|
\rail@y=\rail@sy
|
|
\rail@ex=\rail@gex
|
|
\advance\rail@x by \rail@joinsz
|
|
}
|
|
|
|
% \rail@bar : start '|' alternatives
|
|
%
|
|
% \rail@nextbar : next '|' alternative
|
|
%
|
|
% \rail@endbar : end '|' alternatives
|
|
%
|
|
|
|
\def\rail@bar{
|
|
\rail@alt\rail@barsplit
|
|
}
|
|
|
|
\def\rail@nextbar{
|
|
\rail@nextalt\relax
|
|
}
|
|
|
|
\def\rail@endbar{
|
|
\rail@endalt\rail@barjoin
|
|
}
|
|
|
|
% \rail@plus : start '+' alternatives
|
|
%
|
|
% \rail@nextplus: next '+' alternative
|
|
%
|
|
% \rail@endplus : end '+' alternatives
|
|
%
|
|
|
|
\def\rail@plus{
|
|
\rail@alt\rail@plussplit
|
|
}
|
|
|
|
\def\rail@nextplus{
|
|
\rail@nextalt\rail@fixplus
|
|
}
|
|
|
|
\def\rail@fixplus{
|
|
\ifnum\rail@gy<\rail@sy
|
|
\begingroup
|
|
\rail@x=\rail@gx
|
|
\rail@y=\rail@gy
|
|
\rail@ex=\rail@gex
|
|
\rail@rx=\rail@grx
|
|
\ifnum\rail@x<\rail@rx
|
|
\rail@x=\rail@rx
|
|
\fi
|
|
\rail@eline
|
|
\rail@jx=\rail@x
|
|
\rail@jy=\rail@y
|
|
\advance\rail@jy by \rail@joinhsz
|
|
\rail@joval[br]
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\rail@tmpa=\rail@sy
|
|
\advance\rail@tmpa by -\rail@joinhsz
|
|
\advance\rail@tmpa by -\rail@jy
|
|
\rail@jput{\line(0,1){\number\rail@tmpa}}
|
|
\rail@jy=\rail@sy
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\rail@joval[tl]
|
|
\advance\rail@jy by \rail@joinhsz
|
|
\global\rail@gx=\rail@jx
|
|
\global\rail@gy=\rail@jy
|
|
\global\rail@gex=\rail@gx
|
|
\global\rail@grx=\rail@rx
|
|
\endgroup
|
|
\fi
|
|
}
|
|
|
|
\def\rail@endplus{
|
|
\rail@endalt\rail@plusjoin
|
|
}
|
|
|
|
% \rail@cr{Y} : carriage return to vertical position Y
|
|
|
|
\def\rail@cr#1{
|
|
\rail@tmpa=\rail@sx
|
|
\advance\rail@tmpa by \rail@joinsz
|
|
\ifnum\rail@x<\rail@tmpa\rail@x=\rail@tmpa\fi
|
|
\rail@eline
|
|
\rail@jx=\rail@x
|
|
\rail@jy=\rail@y
|
|
\advance\rail@x by \rail@joinsz
|
|
\ifnum\rail@x>\rail@rx\rail@rx=\rail@x\fi
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\rail@joval[tr]
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\rail@sety{#1}
|
|
\rail@tmpa=\rail@jy
|
|
\advance\rail@tmpa by -\rail@y
|
|
\advance\rail@tmpa by -\rail@boxsp
|
|
\advance\rail@tmpa by -\rail@joinhsz
|
|
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
|
\rail@jy=\rail@y
|
|
\advance\rail@jy by \rail@boxsp
|
|
\advance\rail@jy by \rail@joinhsz
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
\rail@joval[br]
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\rail@tmpa=\rail@jx
|
|
\advance\rail@tmpa by -\rail@sx
|
|
\advance\rail@tmpa by -\rail@joinhsz
|
|
\rail@jput{\line(-1,0){\number\rail@tmpa}}
|
|
\rail@jx=\rail@sx
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\advance\rail@jy by -\rail@joinhsz
|
|
\rail@joval[tl]
|
|
\advance\rail@jx by -\rail@joinhsz
|
|
\rail@tmpa=\rail@boxsp
|
|
\advance\rail@tmpa by -\rail@joinsz
|
|
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
|
\advance\rail@jy by -\rail@tmpa
|
|
\advance\rail@jx by \rail@joinhsz
|
|
\rail@joval[bl]
|
|
\rail@x=\rail@jx
|
|
\rail@ex=\rail@x
|
|
}
|
|
|
|
% default setup for Isabelle
|
|
\newenvironment{railoutput}%
|
|
{\begin{list}{}{\rail@param}\def\rail@expand{\relax}\makeatletter}{\makeatother\end{list}}
|
|
|
|
\def\rail@termfont{\isabellestyle{tt}}
|
|
\def\rail@nontfont{\isabellestyle{it}}
|
|
\def\rail@namefont{\isabellestyle{it}}
|