wenzelm@2658
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% rail.sty - style file to support railroad diagrams
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wenzelm@2658
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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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wenzelm@2658
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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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%
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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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wenzelm@2658
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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% LaTeX will warn if there is no file.rao or it's out of date.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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wenzelm@2658
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% write the .rai and .rao files, and those that do the actual formatting
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wenzelm@2658
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% of the railroad diagrams.
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wenzelm@2658
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wenzelm@2658
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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 and
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% defines \rail@t@IDENT as \rail@termfont IDENT.
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%
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% \railtoken{IDENT}{TEXT} : format IDENT as terminal TEXT. writes out
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% \rail@t{IDENT} to the .rai file and defines
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% \rail@t@IDENT as TEXT.
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%
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% \rail@nr : railroad diagram counter, starts at 1
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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} and \railtoken.
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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 and \railtoken.
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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@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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% \rail@enddocument : original \enddocument
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%
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% \enddocument : checks \ifrail@all
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\newcount\rail@nr
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\rail@nr=1
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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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\makeatletter
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\@input{\jobname.rao}
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\makeatother
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\if@filesw
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\newwrite\tf@rai
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\immediate\openout\tf@rai\jobname.rai\relax
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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#1\end#2{
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\end{#2}
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\rail@first
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\begingroup
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\let\\=\relax
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\global\edef\rail@i@{#1}
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\endgroup
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\@ifundefined{tf@rai}{}{
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\begingroup
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\let\\=\relax
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\immediate\write\tf@rai{\noexpand\rail@i{\number\rail@nr}{\rail@i@}}
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\endgroup
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}
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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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\expandafter\relax\csname rail@o@\number\rail@nr\endcsname
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\else
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\@warning{Railroad diagram {\number\rail@nr} doesn't match}
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\global\let\rail@endwarn=\rail@warn
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\rail@begin{1}{}
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\rail@setbox{\bf ???}
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\rail@oval
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\rail@end
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\fi
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\global\advance\rail@nr by 1
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}
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\def\railoptions#1{
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\rail@first
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\@writefile{rai}{\noexpand\rail@p{#1}}
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}
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\def\railterm#1{
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\rail@first
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\@for\rail@i@:=#1\do{
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\@writefile{rai}{\noexpand\rail@t{\rail@i@}}
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}
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}
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\def\railtoken#1#2{
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\rail@first
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\@writefile{rai}{\noexpand\rail@t{#1}}
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\expandafter\def\csname rail@t@#1\endcsname{#2}
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}
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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{#2}
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}
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\def\rail@t#1{}
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\def\rail@p#1{}
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\def\rail@warn{
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\@warning{Railroad diagram(s) may have changed. Use 'rail' and rerun}
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}
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\let\rail@endwarn=\relax
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\let\rail@enddocument=\enddocument
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\def\enddocument{
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\rail@endwarn
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\rail@enddocument
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}
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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 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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\newdimen\railunit
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\newdimen\railextra
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\newdimen\railboxheight
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\newdimen\railboxskip
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\newdimen\railboxleft
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\newdimen\railboxright
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\newdimen\railovalspace
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\newdimen\railframespace
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\newdimen\railtextleft
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\newdimen\railtextright
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\newdimen\railtextup
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\newdimen\railjoinsize
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\newdimen\railjoinadjust
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\newdimen\railnamesep
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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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\def\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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% initialize the parameters
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\railunit=1sp
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\railextra=4ex
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\railboxleft=1ex
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\railboxright=1ex
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\railovalspace=2ex
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\railframespace=2ex
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\railtextleft=1ex
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\railtextright=1ex
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wenzelm@2658
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\railjoinadjust=0pt
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wenzelm@2658
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\railnamesep=1ex
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wenzelm@2658
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wenzelm@2658
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\ifcase\@ptsize
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% 10 pt
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\railboxheight=16pt
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\railboxskip=24pt
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wenzelm@2658
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\railtextup=5pt
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\railjoinsize=16pt
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wenzelm@2658
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\or
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% 11 pt
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290 |
\railboxheight=16pt
|
wenzelm@2658
|
291 |
\railboxskip=24pt
|
wenzelm@2658
|
292 |
\railtextup=5pt
|
wenzelm@2658
|
293 |
\railjoinsize=16pt
|
wenzelm@2658
|
294 |
\or
|
wenzelm@2658
|
295 |
% 12 pt
|
wenzelm@2658
|
296 |
\railboxheight=20pt
|
wenzelm@2658
|
297 |
\railboxskip=28pt
|
wenzelm@2658
|
298 |
\railtextup=6pt
|
wenzelm@2658
|
299 |
\railjoinsize=20pt
|
wenzelm@2658
|
300 |
\fi
|
wenzelm@2658
|
301 |
|
wenzelm@2658
|
302 |
\railinit
|
wenzelm@2658
|
303 |
|
wenzelm@2658
|
304 |
% railroad formatting primitives
|
wenzelm@2658
|
305 |
%
|
wenzelm@2658
|
306 |
% \rail@x : current x
|
wenzelm@2658
|
307 |
% \rail@y : current y
|
wenzelm@2658
|
308 |
% \rail@ex : current end x
|
wenzelm@2658
|
309 |
% \rail@sx : starting x for \rail@cr
|
wenzelm@2658
|
310 |
% \rail@rx : rightmost previous x for \rail@cr
|
wenzelm@2658
|
311 |
%
|
wenzelm@2658
|
312 |
% \rail@tmpa : temporary count
|
wenzelm@2658
|
313 |
% \rail@tmpb : temporary count
|
wenzelm@2658
|
314 |
% \rail@tmpc : temporary count
|
wenzelm@2658
|
315 |
%
|
wenzelm@2658
|
316 |
% \rail@put : put at (\rail@x,\rail@y)
|
wenzelm@2658
|
317 |
%
|
wenzelm@2658
|
318 |
% \rail@eline : end line by drawing from \rail@ex to \rail@x
|
wenzelm@2658
|
319 |
%
|
wenzelm@2658
|
320 |
% \rail@sety{LEVEL} : set \rail@y to level LEVEL
|
wenzelm@2658
|
321 |
|
wenzelm@2658
|
322 |
\newcount\rail@x
|
wenzelm@2658
|
323 |
\newcount\rail@y
|
wenzelm@2658
|
324 |
\newcount\rail@ex
|
wenzelm@2658
|
325 |
\newcount\rail@sx
|
wenzelm@2658
|
326 |
\newcount\rail@rx
|
wenzelm@2658
|
327 |
|
wenzelm@2658
|
328 |
\newcount\rail@tmpa
|
wenzelm@2658
|
329 |
\newcount\rail@tmpb
|
wenzelm@2658
|
330 |
\newcount\rail@tmpc
|
wenzelm@2658
|
331 |
|
wenzelm@2658
|
332 |
\def\rail@put{\put(\number\rail@x,\number\rail@y)}
|
wenzelm@2658
|
333 |
|
wenzelm@2658
|
334 |
\def\rail@eline{
|
wenzelm@2658
|
335 |
\rail@tmpb=\rail@x
|
wenzelm@2658
|
336 |
\advance\rail@tmpb by -\rail@ex
|
wenzelm@2658
|
337 |
\rail@put{\line(-1,0){\number\rail@tmpb}}
|
wenzelm@2658
|
338 |
}
|
wenzelm@2658
|
339 |
|
wenzelm@2658
|
340 |
\def\rail@sety#1{
|
wenzelm@2658
|
341 |
\rail@y=#1
|
wenzelm@2658
|
342 |
\multiply\rail@y by -\rail@boxsp
|
wenzelm@2658
|
343 |
\advance\rail@y by -\rail@boxht
|
wenzelm@2658
|
344 |
}
|
wenzelm@2658
|
345 |
|
wenzelm@2658
|
346 |
% \rail@list : declarations for list environment
|
wenzelm@2658
|
347 |
%
|
wenzelm@2658
|
348 |
% \railparam{TEXT} : sets \rail@list to TEXT
|
wenzelm@2658
|
349 |
%
|
wenzelm@2658
|
350 |
% \rail@begin{HEIGHT}{NAME} : begin a railroad diagram of height HEIGHT
|
wenzelm@2658
|
351 |
%
|
wenzelm@2658
|
352 |
% \rail@end : end a railroad diagram
|
wenzelm@2658
|
353 |
|
wenzelm@2658
|
354 |
\def\rail@list{}
|
wenzelm@2658
|
355 |
|
wenzelm@2658
|
356 |
\def\railparam#1{
|
wenzelm@2658
|
357 |
\def\rail@list{#1}
|
wenzelm@2658
|
358 |
}
|
wenzelm@2658
|
359 |
|
wenzelm@2658
|
360 |
\newbox\tempbox
|
wenzelm@2658
|
361 |
|
wenzelm@2658
|
362 |
\def\rail@begin#1#2{
|
wenzelm@2658
|
363 |
\medskip
|
wenzelm@2658
|
364 |
\begin{list}{}{\rail@list}
|
wenzelm@2658
|
365 |
\item[]
|
wenzelm@2658
|
366 |
\vbox\bgroup
|
wenzelm@2658
|
367 |
\ifx\@empty#2\else
|
wenzelm@2658
|
368 |
{\rail@namefont #2}
|
wenzelm@2658
|
369 |
\\*[\railnamesep]\nopagebreak
|
wenzelm@2658
|
370 |
\fi
|
wenzelm@2658
|
371 |
\unitlength=\railunit
|
wenzelm@2658
|
372 |
\rail@tmpa=#1
|
wenzelm@2658
|
373 |
\multiply\rail@tmpa by \rail@boxsp
|
wenzelm@2658
|
374 |
\begin{picture}(0,\number\rail@tmpa)(0,-\number\rail@tmpa)
|
wenzelm@2658
|
375 |
\rail@ex=0
|
wenzelm@2658
|
376 |
\rail@rx=0
|
wenzelm@2658
|
377 |
\rail@x=\rail@extra
|
wenzelm@2658
|
378 |
\rail@sx=\rail@x
|
wenzelm@2658
|
379 |
\rail@sety{0}
|
wenzelm@2658
|
380 |
}
|
wenzelm@2658
|
381 |
|
wenzelm@2658
|
382 |
\def\rail@end{
|
wenzelm@2658
|
383 |
\advance\rail@x by \rail@extra
|
wenzelm@2658
|
384 |
\rail@eline
|
wenzelm@2658
|
385 |
\end{picture}
|
wenzelm@2658
|
386 |
\egroup
|
wenzelm@2658
|
387 |
\end{list}
|
wenzelm@2658
|
388 |
}
|
wenzelm@2658
|
389 |
|
wenzelm@2658
|
390 |
% \rail@tokenfont : format setup for \railtoken identifiers
|
wenzelm@2658
|
391 |
%
|
wenzelm@2658
|
392 |
% \rail@termfont : format setup for terminals
|
wenzelm@2658
|
393 |
%
|
wenzelm@2658
|
394 |
% \rail@nontfont : format setup for nonterminals
|
wenzelm@2658
|
395 |
%
|
wenzelm@2658
|
396 |
% \rail@annofont : format setup for annotations
|
wenzelm@2658
|
397 |
%
|
wenzelm@2658
|
398 |
% \rail@rulefont : format setup for rule names
|
wenzelm@2658
|
399 |
%
|
wenzelm@2658
|
400 |
% \rail@indexfont : format setup for index entry
|
wenzelm@2658
|
401 |
%
|
wenzelm@2658
|
402 |
% \railtokenfont{TEXT} : set \railtoken format setup to TEXT
|
wenzelm@2658
|
403 |
%
|
wenzelm@2658
|
404 |
% \railtermfont{TEXT} : set terminal format setup to TEXT
|
wenzelm@2658
|
405 |
%
|
wenzelm@2658
|
406 |
% \railnontermfont{TEXT} : set nonterminal format setup to TEXT
|
wenzelm@2658
|
407 |
%
|
wenzelm@2658
|
408 |
% \railannotatefont{TEXT} : set annotation format setup to TEXT
|
wenzelm@2658
|
409 |
%
|
wenzelm@2658
|
410 |
% \railnamefont{TEXT} : set rule name format setup to TEXT
|
wenzelm@2658
|
411 |
%
|
wenzelm@2658
|
412 |
% \railindexfont{TEXT} : set index entry format setup to TEXT
|
wenzelm@2658
|
413 |
|
wenzelm@2658
|
414 |
\let\rail@tokenfont=\tt
|
wenzelm@2658
|
415 |
\let\rail@termfont=\tt
|
wenzelm@2658
|
416 |
\let\rail@nontfont=\rm
|
wenzelm@2658
|
417 |
\let\rail@annofont=\it
|
wenzelm@2658
|
418 |
\let\rail@namefont=\it
|
wenzelm@2658
|
419 |
\let\rail@indexfont=\it
|
wenzelm@2658
|
420 |
|
wenzelm@2658
|
421 |
\def\railtokenfont#1{
|
wenzelm@2658
|
422 |
\def\rail@tokenfont{#1}
|
wenzelm@2658
|
423 |
}
|
wenzelm@2658
|
424 |
|
wenzelm@2658
|
425 |
\def\railtermfont#1{
|
wenzelm@2658
|
426 |
\def\rail@termfont{#1}
|
wenzelm@2658
|
427 |
}
|
wenzelm@2658
|
428 |
|
wenzelm@2658
|
429 |
\def\railnontermfont#1{
|
wenzelm@2658
|
430 |
\def\rail@nontfont{#1}
|
wenzelm@2658
|
431 |
}
|
wenzelm@2658
|
432 |
|
wenzelm@2658
|
433 |
\def\railannotatefont#1{
|
wenzelm@2658
|
434 |
\def\rail@annofont{#1}
|
wenzelm@2658
|
435 |
}
|
wenzelm@2658
|
436 |
|
wenzelm@2658
|
437 |
\def\railnamefont#1{
|
wenzelm@2658
|
438 |
\def\rail@namefont{#1}
|
wenzelm@2658
|
439 |
}
|
wenzelm@2658
|
440 |
|
wenzelm@2658
|
441 |
\def\railindexfont#1{
|
wenzelm@2658
|
442 |
\def\rail@indexfont{#1}
|
wenzelm@2658
|
443 |
}
|
wenzelm@2658
|
444 |
|
wenzelm@2658
|
445 |
% \rail@token{TEXT} : format token TEXT
|
wenzelm@2658
|
446 |
%
|
wenzelm@2658
|
447 |
% \rail@ctoken{TEXT} : format token TEXT centered
|
wenzelm@2658
|
448 |
%
|
wenzelm@2658
|
449 |
% \rail@nont{TEXT} : format nonterminal TEXT
|
wenzelm@2658
|
450 |
%
|
wenzelm@2658
|
451 |
% \rail@cnont{TEXT} : format nonterminal TEXT centered
|
wenzelm@2658
|
452 |
%
|
wenzelm@2658
|
453 |
% \rail@cterm{TEXT} : format terminal TEXT
|
wenzelm@2658
|
454 |
%
|
wenzelm@2658
|
455 |
% \rail@cterm{TEXT} : format terminal TEXT centered
|
wenzelm@2658
|
456 |
%
|
wenzelm@2658
|
457 |
% \rail@annote[TEXT] : format TEXT as annotation
|
wenzelm@2658
|
458 |
%
|
wenzelm@2658
|
459 |
% \rail@annotebox[TEXT] : annotate box with TEXT
|
wenzelm@2658
|
460 |
|
wenzelm@2658
|
461 |
\def\rail@token#1{
|
wenzelm@2658
|
462 |
\expandafter\@ifundefined{rail@t@#1}{
|
wenzelm@2658
|
463 |
\rail@setbox{\rail@termfont #1}
|
wenzelm@2658
|
464 |
}{
|
wenzelm@2658
|
465 |
\rail@setbox{\rail@tokenfont \csname rail@t@#1\endcsname}
|
wenzelm@2658
|
466 |
}
|
wenzelm@2658
|
467 |
\rail@oval
|
wenzelm@2658
|
468 |
}
|
wenzelm@2658
|
469 |
|
wenzelm@2658
|
470 |
\def\rail@ctoken#1{
|
wenzelm@2658
|
471 |
\rail@setbox{\rail@tokenfont \csname rail@t@#1\endcsname}
|
wenzelm@2658
|
472 |
\rail@coval
|
wenzelm@2658
|
473 |
}
|
wenzelm@2658
|
474 |
|
wenzelm@2658
|
475 |
\def\rail@nont#1{
|
wenzelm@2658
|
476 |
\rail@setbox{\rail@nontfont #1}
|
wenzelm@2658
|
477 |
\rail@frame
|
wenzelm@2658
|
478 |
}
|
wenzelm@2658
|
479 |
|
wenzelm@2658
|
480 |
\def\rail@cnont#1{
|
wenzelm@2658
|
481 |
\rail@setbox{\rail@nontfont #1}
|
wenzelm@2658
|
482 |
\rail@cframe
|
wenzelm@2658
|
483 |
}
|
wenzelm@2658
|
484 |
|
wenzelm@2658
|
485 |
\def\rail@term#1{
|
wenzelm@2658
|
486 |
\rail@setbox{\rail@termfont #1}
|
wenzelm@2658
|
487 |
\rail@oval
|
wenzelm@2658
|
488 |
}
|
wenzelm@2658
|
489 |
|
wenzelm@2658
|
490 |
\def\rail@cterm#1{
|
wenzelm@2658
|
491 |
\rail@setbox{\rail@termfont #1}
|
wenzelm@2658
|
492 |
\rail@coval
|
wenzelm@2658
|
493 |
}
|
wenzelm@2658
|
494 |
|
wenzelm@2658
|
495 |
\def\rail@annote[#1]{
|
wenzelm@2658
|
496 |
\rail@setbox{\rail@annofont #1}
|
wenzelm@2658
|
497 |
\rail@text
|
wenzelm@2658
|
498 |
}
|
wenzelm@2658
|
499 |
|
wenzelm@2658
|
500 |
\def\rail@annotebox[#1]{
|
wenzelm@2658
|
501 |
\ \rail@annofont #1
|
wenzelm@2658
|
502 |
}
|
wenzelm@2658
|
503 |
|
wenzelm@2658
|
504 |
% \rail@box : temporary box for \rail@oval and \rail@frame
|
wenzelm@2658
|
505 |
%
|
wenzelm@2658
|
506 |
% \rail@setbox{TEXT} : set \rail@box to TEXT, set \rail@tmpa to width
|
wenzelm@2658
|
507 |
%
|
wenzelm@2658
|
508 |
% \rail@oval : format \rail@box of width \rail@tmpa inside an oval
|
wenzelm@2658
|
509 |
%
|
wenzelm@2658
|
510 |
% \rail@coval : same as \rail@oval, but centered between \rail@x and
|
wenzelm@2658
|
511 |
% \rail@mx
|
wenzelm@2658
|
512 |
%
|
wenzelm@2658
|
513 |
% \rail@frame : format \rail@box of width \rail@tmpa inside a frame
|
wenzelm@2658
|
514 |
%
|
wenzelm@2658
|
515 |
% \rail@cframe : same as \rail@frame, but centered between \rail@x and
|
wenzelm@2658
|
516 |
% \rail@mx
|
wenzelm@2658
|
517 |
%
|
wenzelm@2658
|
518 |
% \rail@text : format \rail@box of width \rail@tmpa above the line
|
wenzelm@2658
|
519 |
|
wenzelm@2658
|
520 |
\newbox\rail@box
|
wenzelm@2658
|
521 |
|
wenzelm@2658
|
522 |
\def\rail@setbox#1{
|
wenzelm@2658
|
523 |
\setbox\rail@box\hbox{\strut#1}
|
wenzelm@2658
|
524 |
\rail@tmpa=\wd\rail@box
|
wenzelm@2658
|
525 |
\divide\rail@tmpa by \railunit
|
wenzelm@2658
|
526 |
}
|
wenzelm@2658
|
527 |
|
wenzelm@2658
|
528 |
\def\rail@oval{
|
wenzelm@2658
|
529 |
\advance\rail@x by \rail@boxlf
|
wenzelm@2658
|
530 |
\rail@eline
|
wenzelm@2658
|
531 |
\advance\rail@tmpa by \rail@ovalsp
|
wenzelm@2658
|
532 |
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
wenzelm@2658
|
533 |
\rail@tmpb=\rail@tmpa
|
wenzelm@2658
|
534 |
\divide\rail@tmpb by 2
|
wenzelm@2658
|
535 |
\advance\rail@y by -\rail@boxhht
|
wenzelm@2658
|
536 |
\rail@put{\makebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
wenzelm@2658
|
537 |
\advance\rail@y by \rail@boxhht
|
wenzelm@2658
|
538 |
\advance\rail@x by \rail@tmpb
|
wenzelm@2658
|
539 |
\rail@put{\oval(\number\rail@tmpa,\number\rail@boxht)}
|
wenzelm@2658
|
540 |
\advance\rail@x by \rail@tmpb
|
wenzelm@2658
|
541 |
\rail@ex=\rail@x
|
wenzelm@2658
|
542 |
\advance\rail@x by \rail@boxrt
|
wenzelm@2658
|
543 |
}
|
wenzelm@2658
|
544 |
|
wenzelm@2658
|
545 |
\def\rail@coval{
|
wenzelm@2658
|
546 |
\rail@tmpb=\rail@tmpa
|
wenzelm@2658
|
547 |
\advance\rail@tmpb by \rail@ovalsp
|
wenzelm@2658
|
548 |
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
wenzelm@2658
|
549 |
\advance\rail@tmpb by \rail@boxlf
|
wenzelm@2658
|
550 |
\advance\rail@tmpb by \rail@boxrt
|
wenzelm@2658
|
551 |
\rail@tmpc=\rail@mx
|
wenzelm@2658
|
552 |
\advance\rail@tmpc by -\rail@x
|
wenzelm@2658
|
553 |
\advance\rail@tmpc by -\rail@tmpb
|
wenzelm@2658
|
554 |
\divide\rail@tmpc by 2
|
wenzelm@2658
|
555 |
\ifnum\rail@tmpc>0
|
wenzelm@2658
|
556 |
\advance\rail@x by \rail@tmpc
|
wenzelm@2658
|
557 |
\fi
|
wenzelm@2658
|
558 |
\rail@oval
|
wenzelm@2658
|
559 |
}
|
wenzelm@2658
|
560 |
|
wenzelm@2658
|
561 |
\def\rail@frame{
|
wenzelm@2658
|
562 |
\advance\rail@x by \rail@boxlf
|
wenzelm@2658
|
563 |
\rail@eline
|
wenzelm@2658
|
564 |
\advance\rail@tmpa by \rail@framesp
|
wenzelm@2658
|
565 |
\ifnum\rail@tmpa<\rail@boxht\rail@tmpa=\rail@boxht\fi
|
wenzelm@2658
|
566 |
\advance\rail@y by -\rail@boxhht
|
wenzelm@2658
|
567 |
\rail@put{\framebox(\number\rail@tmpa,\number\rail@boxht){\box\rail@box}}
|
wenzelm@2658
|
568 |
\advance\rail@y by \rail@boxhht
|
wenzelm@2658
|
569 |
\advance\rail@x by \rail@tmpa
|
wenzelm@2658
|
570 |
\rail@ex=\rail@x
|
wenzelm@2658
|
571 |
\advance\rail@x by \rail@boxrt
|
wenzelm@2658
|
572 |
}
|
wenzelm@2658
|
573 |
|
wenzelm@2658
|
574 |
\def\rail@cframe{
|
wenzelm@2658
|
575 |
\rail@tmpb=\rail@tmpa
|
wenzelm@2658
|
576 |
\advance\rail@tmpb by \rail@framesp
|
wenzelm@2658
|
577 |
\ifnum\rail@tmpb<\rail@boxht\rail@tmpb=\rail@boxht\fi
|
wenzelm@2658
|
578 |
\advance\rail@tmpb by \rail@boxlf
|
wenzelm@2658
|
579 |
\advance\rail@tmpb by \rail@boxrt
|
wenzelm@2658
|
580 |
\rail@tmpc=\rail@mx
|
wenzelm@2658
|
581 |
\advance\rail@tmpc by -\rail@x
|
wenzelm@2658
|
582 |
\advance\rail@tmpc by -\rail@tmpb
|
wenzelm@2658
|
583 |
\divide\rail@tmpc by 2
|
wenzelm@2658
|
584 |
\ifnum\rail@tmpc>0
|
wenzelm@2658
|
585 |
\advance\rail@x by \rail@tmpc
|
wenzelm@2658
|
586 |
\fi
|
wenzelm@2658
|
587 |
\rail@frame
|
wenzelm@2658
|
588 |
}
|
wenzelm@2658
|
589 |
|
wenzelm@2658
|
590 |
\def\rail@text{
|
wenzelm@2658
|
591 |
\advance\rail@x by \rail@textlf
|
wenzelm@2658
|
592 |
\advance\rail@y by \rail@textup
|
wenzelm@2658
|
593 |
\rail@put{\box\rail@box}
|
wenzelm@2658
|
594 |
\advance\rail@y by -\rail@textup
|
wenzelm@2658
|
595 |
\advance\rail@x by \rail@tmpa
|
wenzelm@2658
|
596 |
\advance\rail@x by \rail@textrt
|
wenzelm@2658
|
597 |
}
|
wenzelm@2658
|
598 |
|
wenzelm@2658
|
599 |
% alternatives
|
wenzelm@2658
|
600 |
%
|
wenzelm@2658
|
601 |
% \rail@jx \rail@jy : current join point
|
wenzelm@2658
|
602 |
%
|
wenzelm@2658
|
603 |
% \rail@gx \rail@gy \rail@gex \rail@grx : global versions of \rail@x etc,
|
wenzelm@2658
|
604 |
% to pass values over group closings
|
wenzelm@2658
|
605 |
%
|
wenzelm@2658
|
606 |
% \rail@mx : maximum x so far
|
wenzelm@2658
|
607 |
%
|
wenzelm@2658
|
608 |
% \rail@sy : starting \rail@y for alternatives
|
wenzelm@2658
|
609 |
%
|
wenzelm@2658
|
610 |
% \rail@jput : put at (\rail@jx,\rail@jy)
|
wenzelm@2658
|
611 |
%
|
wenzelm@2658
|
612 |
% \rail@joval[PART] : put \oval[PART] with adjust
|
wenzelm@2658
|
613 |
|
wenzelm@2658
|
614 |
\newcount\rail@jx
|
wenzelm@2658
|
615 |
\newcount\rail@jy
|
wenzelm@2658
|
616 |
|
wenzelm@2658
|
617 |
\newcount\rail@gx
|
wenzelm@2658
|
618 |
\newcount\rail@gy
|
wenzelm@2658
|
619 |
\newcount\rail@gex
|
wenzelm@2658
|
620 |
\newcount\rail@grx
|
wenzelm@2658
|
621 |
|
wenzelm@2658
|
622 |
\newcount\rail@sy
|
wenzelm@2658
|
623 |
\newcount\rail@mx
|
wenzelm@2658
|
624 |
|
wenzelm@2658
|
625 |
\def\rail@jput{
|
wenzelm@2658
|
626 |
\put(\number\rail@jx,\number\rail@jy)
|
wenzelm@2658
|
627 |
}
|
wenzelm@2658
|
628 |
|
wenzelm@2658
|
629 |
\def\rail@joval[#1]{
|
wenzelm@2658
|
630 |
\advance\rail@jx by \rail@joinadj
|
wenzelm@2658
|
631 |
\rail@jput{\oval(\number\rail@joinsz,\number\rail@joinsz)[#1]}
|
wenzelm@2658
|
632 |
\advance\rail@jx by -\rail@joinadj
|
wenzelm@2658
|
633 |
}
|
wenzelm@2658
|
634 |
|
wenzelm@2658
|
635 |
% \rail@barsplit : incoming split for '|'
|
wenzelm@2658
|
636 |
%
|
wenzelm@2658
|
637 |
% \rail@plussplit : incoming split for '+'
|
wenzelm@2658
|
638 |
%
|
wenzelm@2658
|
639 |
|
wenzelm@2658
|
640 |
\def\rail@barsplit{
|
wenzelm@2658
|
641 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
642 |
\rail@joval[tr]
|
wenzelm@2658
|
643 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
644 |
}
|
wenzelm@2658
|
645 |
|
wenzelm@2658
|
646 |
\def\rail@plussplit{
|
wenzelm@2658
|
647 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
648 |
\advance\rail@jx by \rail@joinsz
|
wenzelm@2658
|
649 |
\rail@joval[tl]
|
wenzelm@2658
|
650 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
651 |
}
|
wenzelm@2658
|
652 |
|
wenzelm@2658
|
653 |
% \rail@alt{SPLIT} : start alternatives with incoming split SPLIT
|
wenzelm@2658
|
654 |
%
|
wenzelm@2658
|
655 |
|
wenzelm@2658
|
656 |
\def\rail@alt#1{
|
wenzelm@2658
|
657 |
\rail@sy=\rail@y
|
wenzelm@2658
|
658 |
\rail@jx=\rail@x
|
wenzelm@2658
|
659 |
\rail@jy=\rail@y
|
wenzelm@2658
|
660 |
\advance\rail@x by \rail@joinsz
|
wenzelm@2658
|
661 |
\rail@mx=0
|
wenzelm@2658
|
662 |
\let\rail@list=\@empty
|
wenzelm@2658
|
663 |
\let\rail@comma=\@empty
|
wenzelm@2658
|
664 |
\let\rail@split=#1
|
wenzelm@2658
|
665 |
\begingroup
|
wenzelm@2658
|
666 |
\rail@sx=\rail@x
|
wenzelm@2658
|
667 |
\rail@rx=0
|
wenzelm@2658
|
668 |
}
|
wenzelm@2658
|
669 |
|
wenzelm@2658
|
670 |
% \rail@nextalt{FIX}{Y} : start next alternative at vertical position Y
|
wenzelm@2658
|
671 |
% and fix-up FIX
|
wenzelm@2658
|
672 |
%
|
wenzelm@2658
|
673 |
|
wenzelm@2658
|
674 |
\def\rail@nextalt#1#2{
|
wenzelm@2658
|
675 |
\global\rail@gx=\rail@x
|
wenzelm@2658
|
676 |
\global\rail@gy=\rail@y
|
wenzelm@2658
|
677 |
\global\rail@gex=\rail@ex
|
wenzelm@2658
|
678 |
\global\rail@grx=\rail@rx
|
wenzelm@2658
|
679 |
\endgroup
|
wenzelm@2658
|
680 |
#1
|
wenzelm@2658
|
681 |
\ifnum\rail@gx>\rail@mx\rail@mx=\rail@gx\fi
|
wenzelm@2658
|
682 |
\ifnum\rail@grx>\rail@mx\rail@mx=\rail@grx\fi
|
wenzelm@2658
|
683 |
\edef\rail@list{\rail@list\rail@comma\number\rail@gex:\number\rail@gy}
|
wenzelm@2658
|
684 |
\def\rail@comma{,}
|
wenzelm@2658
|
685 |
\rail@split
|
wenzelm@2658
|
686 |
\let\rail@split=\@empty
|
wenzelm@2658
|
687 |
\rail@sety{#2}
|
wenzelm@2658
|
688 |
\rail@tmpa=\rail@jy
|
wenzelm@2658
|
689 |
\advance\rail@tmpa by -\rail@y
|
wenzelm@2658
|
690 |
\advance\rail@tmpa by -\rail@joinhsz
|
wenzelm@2658
|
691 |
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
wenzelm@2658
|
692 |
\rail@jy=\rail@y
|
wenzelm@2658
|
693 |
\advance\rail@jy by \rail@joinhsz
|
wenzelm@2658
|
694 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
695 |
\rail@joval[bl]
|
wenzelm@2658
|
696 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
697 |
\rail@ex=\rail@x
|
wenzelm@2658
|
698 |
\begingroup
|
wenzelm@2658
|
699 |
\rail@sx=\rail@x
|
wenzelm@2658
|
700 |
\rail@rx=0
|
wenzelm@2658
|
701 |
}
|
wenzelm@2658
|
702 |
|
wenzelm@2658
|
703 |
% \rail@barjoin : outgoing join for first '|' alternative
|
wenzelm@2658
|
704 |
%
|
wenzelm@2658
|
705 |
% \rail@plusjoin : outgoing join for first '+' alternative
|
wenzelm@2658
|
706 |
%
|
wenzelm@2658
|
707 |
% \rail@altjoin : join for subsequent alternative
|
wenzelm@2658
|
708 |
%
|
wenzelm@2658
|
709 |
|
wenzelm@2658
|
710 |
\def\rail@barjoin{
|
wenzelm@2658
|
711 |
\ifnum\rail@y<\rail@sy
|
wenzelm@2658
|
712 |
\global\rail@gex=\rail@jx
|
wenzelm@2658
|
713 |
\else
|
wenzelm@2658
|
714 |
\global\rail@gex=\rail@ex
|
wenzelm@2658
|
715 |
\fi
|
wenzelm@2658
|
716 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
717 |
\rail@joval[tl]
|
wenzelm@2658
|
718 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
719 |
\ifnum\rail@y<\rail@sy
|
wenzelm@2658
|
720 |
\rail@altjoin
|
wenzelm@2658
|
721 |
\fi
|
wenzelm@2658
|
722 |
}
|
wenzelm@2658
|
723 |
|
wenzelm@2658
|
724 |
\def\rail@plusjoin{
|
wenzelm@2658
|
725 |
\global\rail@gex=\rail@ex
|
wenzelm@2658
|
726 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
727 |
\advance\rail@jx by -\rail@joinsz
|
wenzelm@2658
|
728 |
\rail@joval[tr]
|
wenzelm@2658
|
729 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
730 |
}
|
wenzelm@2658
|
731 |
|
wenzelm@2658
|
732 |
\def\rail@altjoin{
|
wenzelm@2658
|
733 |
\rail@eline
|
wenzelm@2658
|
734 |
\rail@tmpa=\rail@jy
|
wenzelm@2658
|
735 |
\advance\rail@tmpa by -\rail@y
|
wenzelm@2658
|
736 |
\advance\rail@tmpa by -\rail@joinhsz
|
wenzelm@2658
|
737 |
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
wenzelm@2658
|
738 |
\rail@jy=\rail@y
|
wenzelm@2658
|
739 |
\advance\rail@jy by \rail@joinhsz
|
wenzelm@2658
|
740 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
741 |
\rail@joval[br]
|
wenzelm@2658
|
742 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
743 |
}
|
wenzelm@2658
|
744 |
|
wenzelm@2658
|
745 |
% \rail@eltsplit EX:Y; : split EX:Y into \rail@ex \rail@y
|
wenzelm@2658
|
746 |
%
|
wenzelm@2658
|
747 |
% \rail@endalt{JOIN} : end alternatives with outgoing join JOIN
|
wenzelm@2658
|
748 |
|
wenzelm@2658
|
749 |
\def\rail@eltsplit#1:#2;{\rail@ex=#1\rail@y=#2}
|
wenzelm@2658
|
750 |
|
wenzelm@2658
|
751 |
\def\rail@endalt#1{
|
wenzelm@2658
|
752 |
\global\rail@gx=\rail@x
|
wenzelm@2658
|
753 |
\global\rail@gy=\rail@y
|
wenzelm@2658
|
754 |
\global\rail@gex=\rail@ex
|
wenzelm@2658
|
755 |
\global\rail@grx=\rail@rx
|
wenzelm@2658
|
756 |
\endgroup
|
wenzelm@2658
|
757 |
\ifnum\rail@gx>\rail@mx\rail@mx=\rail@gx\fi
|
wenzelm@2658
|
758 |
\ifnum\rail@grx>\rail@mx\rail@mx=\rail@grx\fi
|
wenzelm@2658
|
759 |
\edef\rail@list{\rail@list\rail@comma\number\rail@gex:\number\rail@gy}
|
wenzelm@2658
|
760 |
\rail@x=\rail@mx
|
wenzelm@2658
|
761 |
\rail@jx=\rail@x
|
wenzelm@2658
|
762 |
\rail@jy=\rail@sy
|
wenzelm@2658
|
763 |
\advance\rail@jx by \rail@joinsz
|
wenzelm@2658
|
764 |
\let\rail@join=#1
|
wenzelm@2658
|
765 |
\@for\rail@elt:=\rail@list\do{
|
wenzelm@2658
|
766 |
\expandafter\rail@eltsplit\rail@elt;
|
wenzelm@2658
|
767 |
\rail@join
|
wenzelm@2658
|
768 |
\let\rail@join=\rail@altjoin
|
wenzelm@2658
|
769 |
}
|
wenzelm@2658
|
770 |
\rail@x=\rail@mx
|
wenzelm@2658
|
771 |
\rail@y=\rail@sy
|
wenzelm@2658
|
772 |
\rail@ex=\rail@gex
|
wenzelm@2658
|
773 |
\advance\rail@x by \rail@joinsz
|
wenzelm@2658
|
774 |
}
|
wenzelm@2658
|
775 |
|
wenzelm@2658
|
776 |
% \rail@bar : start '|' alternatives
|
wenzelm@2658
|
777 |
%
|
wenzelm@2658
|
778 |
% \rail@nextbar : next '|' alternative
|
wenzelm@2658
|
779 |
%
|
wenzelm@2658
|
780 |
% \rail@endbar : end '|' alternatives
|
wenzelm@2658
|
781 |
%
|
wenzelm@2658
|
782 |
|
wenzelm@2658
|
783 |
\def\rail@bar{
|
wenzelm@2658
|
784 |
\rail@alt\rail@barsplit
|
wenzelm@2658
|
785 |
}
|
wenzelm@2658
|
786 |
|
wenzelm@2658
|
787 |
\def\rail@nextbar{
|
wenzelm@2658
|
788 |
\rail@nextalt\relax
|
wenzelm@2658
|
789 |
}
|
wenzelm@2658
|
790 |
|
wenzelm@2658
|
791 |
\def\rail@endbar{
|
wenzelm@2658
|
792 |
\rail@endalt\rail@barjoin
|
wenzelm@2658
|
793 |
}
|
wenzelm@2658
|
794 |
|
wenzelm@2658
|
795 |
% \rail@plus : start '+' alternatives
|
wenzelm@2658
|
796 |
%
|
wenzelm@2658
|
797 |
% \rail@nextplus: next '+' alternative
|
wenzelm@2658
|
798 |
%
|
wenzelm@2658
|
799 |
% \rail@endplus : end '+' alternatives
|
wenzelm@2658
|
800 |
%
|
wenzelm@2658
|
801 |
|
wenzelm@2658
|
802 |
\def\rail@plus{
|
wenzelm@2658
|
803 |
\rail@alt\rail@plussplit
|
wenzelm@2658
|
804 |
}
|
wenzelm@2658
|
805 |
|
wenzelm@2658
|
806 |
\def\rail@nextplus{
|
wenzelm@2658
|
807 |
\rail@nextalt\rail@fixplus
|
wenzelm@2658
|
808 |
}
|
wenzelm@2658
|
809 |
|
wenzelm@2658
|
810 |
\def\rail@fixplus{
|
wenzelm@2658
|
811 |
\ifnum\rail@gy<\rail@sy
|
wenzelm@2658
|
812 |
\begingroup
|
wenzelm@2658
|
813 |
\rail@x=\rail@gx
|
wenzelm@2658
|
814 |
\rail@y=\rail@gy
|
wenzelm@2658
|
815 |
\rail@ex=\rail@gex
|
wenzelm@2658
|
816 |
\rail@rx=\rail@grx
|
wenzelm@2658
|
817 |
\ifnum\rail@x<\rail@rx
|
wenzelm@2658
|
818 |
\rail@x=\rail@rx
|
wenzelm@2658
|
819 |
\fi
|
wenzelm@2658
|
820 |
\rail@eline
|
wenzelm@2658
|
821 |
\rail@jx=\rail@x
|
wenzelm@2658
|
822 |
\rail@jy=\rail@y
|
wenzelm@2658
|
823 |
\advance\rail@jy by \rail@joinhsz
|
wenzelm@2658
|
824 |
\rail@joval[br]
|
wenzelm@2658
|
825 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
826 |
\rail@tmpa=\rail@sy
|
wenzelm@2658
|
827 |
\advance\rail@tmpa by -\rail@joinhsz
|
wenzelm@2658
|
828 |
\advance\rail@tmpa by -\rail@jy
|
wenzelm@2658
|
829 |
\rail@jput{\line(0,1){\number\rail@tmpa}}
|
wenzelm@2658
|
830 |
\rail@jy=\rail@sy
|
wenzelm@2658
|
831 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
832 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
833 |
\rail@joval[tl]
|
wenzelm@2658
|
834 |
\advance\rail@jy by \rail@joinhsz
|
wenzelm@2658
|
835 |
\global\rail@gx=\rail@jx
|
wenzelm@2658
|
836 |
\global\rail@gy=\rail@jy
|
wenzelm@2658
|
837 |
\global\rail@gex=\rail@gx
|
wenzelm@2658
|
838 |
\global\rail@grx=\rail@rx
|
wenzelm@2658
|
839 |
\endgroup
|
wenzelm@2658
|
840 |
\fi
|
wenzelm@2658
|
841 |
}
|
wenzelm@2658
|
842 |
|
wenzelm@2658
|
843 |
\def\rail@endplus{
|
wenzelm@2658
|
844 |
\rail@endalt\rail@plusjoin
|
wenzelm@2658
|
845 |
}
|
wenzelm@2658
|
846 |
|
wenzelm@2658
|
847 |
% \rail@cr{Y} : carriage return to vertical position Y
|
wenzelm@2658
|
848 |
|
wenzelm@2658
|
849 |
\def\rail@cr#1{
|
wenzelm@2658
|
850 |
\rail@tmpa=\rail@sx
|
wenzelm@2658
|
851 |
\advance\rail@tmpa by \rail@joinsz
|
wenzelm@2658
|
852 |
\ifnum\rail@x<\rail@tmpa\rail@x=\rail@tmpa\fi
|
wenzelm@2658
|
853 |
\rail@eline
|
wenzelm@2658
|
854 |
\rail@jx=\rail@x
|
wenzelm@2658
|
855 |
\rail@jy=\rail@y
|
wenzelm@2658
|
856 |
\advance\rail@x by \rail@joinsz
|
wenzelm@2658
|
857 |
\ifnum\rail@x>\rail@rx\rail@rx=\rail@x\fi
|
wenzelm@2658
|
858 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
859 |
\rail@joval[tr]
|
wenzelm@2658
|
860 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
861 |
\rail@sety{#1}
|
wenzelm@2658
|
862 |
\rail@tmpa=\rail@jy
|
wenzelm@2658
|
863 |
\advance\rail@tmpa by -\rail@y
|
wenzelm@2658
|
864 |
\advance\rail@tmpa by -\rail@boxsp
|
wenzelm@2658
|
865 |
\advance\rail@tmpa by -\rail@joinhsz
|
wenzelm@2658
|
866 |
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
wenzelm@2658
|
867 |
\rail@jy=\rail@y
|
wenzelm@2658
|
868 |
\advance\rail@jy by \rail@boxsp
|
wenzelm@2658
|
869 |
\advance\rail@jy by \rail@joinhsz
|
wenzelm@2658
|
870 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
871 |
\rail@joval[br]
|
wenzelm@2658
|
872 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
873 |
\rail@tmpa=\rail@jx
|
wenzelm@2658
|
874 |
\advance\rail@tmpa by -\rail@sx
|
wenzelm@2658
|
875 |
\advance\rail@tmpa by -\rail@joinhsz
|
wenzelm@2658
|
876 |
\rail@jput{\line(-1,0){\number\rail@tmpa}}
|
wenzelm@2658
|
877 |
\rail@jx=\rail@sx
|
wenzelm@2658
|
878 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
879 |
\advance\rail@jy by -\rail@joinhsz
|
wenzelm@2658
|
880 |
\rail@joval[tl]
|
wenzelm@2658
|
881 |
\advance\rail@jx by -\rail@joinhsz
|
wenzelm@2658
|
882 |
\rail@tmpa=\rail@boxsp
|
wenzelm@2658
|
883 |
\advance\rail@tmpa by -\rail@joinsz
|
wenzelm@2658
|
884 |
\rail@jput{\line(0,-1){\number\rail@tmpa}}
|
wenzelm@2658
|
885 |
\advance\rail@jy by -\rail@tmpa
|
wenzelm@2658
|
886 |
\advance\rail@jx by \rail@joinhsz
|
wenzelm@2658
|
887 |
\rail@joval[bl]
|
wenzelm@2658
|
888 |
\rail@x=\rail@jx
|
wenzelm@2658
|
889 |
\rail@ex=\rail@x
|
wenzelm@2658
|
890 |
}
|