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@Uming
Uming committed Jun 1, 2018
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26 changes: 26 additions & 0 deletions .gitignore
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#emacs
.#*

#vscode
__latexindent_temp.tex
*.synctex.gz

#latex temporary
*.aux
*.log
*.toc
*.out
*.fls
*.xdv

# PDF
/*.pdf

# latexmk
*.texmk
*.fdb_latexmk


#BibTeX
*.bbl
*.blg
14 changes: 14 additions & 0 deletions Makefile
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all:
latexmk -xelatex main

pvc:
latexmk -xelatex main -pvc

clean:
latexmk -c
rm *.xdv

# clean all including pdf
clean-all:
latexmk -C

317 changes: 317 additions & 0 deletions bcprules.sty
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%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%% %%%
%%% BCP's latex tricks for typesetting inference rules %%%
%%% %%%
%%% Version 1.4 %%%
%%% %%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%
%%% This package supports two styles of rules: named and unnamed.
%%% Unnamed rules are centered on the page. Named rules are set so
%%% that a series of them will have the rules centered in a vertical
%%% column taking most of the page and the labels right-justified.
%%% When a label would overlap its rule, the label is moved down.
%%%
%%% The width of the column of labels can be varied using a command of the
%%% form
%%%
%%% \typicallabel{T-Arrow-I}
%%%
%%% The default setting is:
%%%
%%% \typicallabel{}
%%%
%%% In other words, the column of rules takes up the whole width of
%%% the page: rules are centered on the centerline of the text, and no
%%% extra space is left for the labels.
%%%
%%% The minimum distance between a rule and its label can be altered by a
%%% command of the form
%%%
%%% \setlength{\labelminsep}{0.5em}
%%%
%%% (This is the default value.)
%%%
%%% Examples:
%%%
%%% An axiom with a label in the right-hand column:
%%%
%%% \infax[The name]{x - x = 0}
%%%
%%% An inference rule with a name:
%%%
%%% \infrule[Another name]
%%% {\mbox{false}}
%%% {x - x = 1}
%%%
%%% A rule with multiple premises on the same line:
%%%
%%% \infrule[Wide premises]
%%% {x > 0 \andalso y > 0 \andalso z > 0}
%%% {x + y + z > 0}
%%%
%%% A rule with several lines of premises:
%%%
%%% \infrule[Long premises]
%%% {x > 0 \\ y > 0 \\ z > 0}
%%% {x + y + z > 0}
%%%
%%% A rule without a name, but centered on the same vertical line as rules
%%% and axioms with names:
%%%
%%% \infrule[]
%%% {x - y = 5}
%%% {y - x = -5}
%%%
%%% A rule without a name, centered on the page:
%%%
%%% \infrule
%%% {x = 5}
%%% {x - 1 > 0}
%%%
%%%
%%% Setting the flag \indexrulestrue causes an index entry to be
%%% generated for each named rule.
%%%
%%% Setting the flag \suppressrulenamestrue causes the names of all rules
%%% to be left blank
%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%% A switch controlling the sizes of rule names
\newif\ifsmallrulenames \smallrulenamesfalse
\newcommand{\smallrulenames}{\smallrulenamestrue}
\newcommand{\choosernsize}[2]{\ifsmallrulenames#1\else#2\fi}

%%% The font for setting inference rule names
\newcommand{\rn}[1]{%
\ifmmode
\mathchoice
{\mbox{\choosernsize{\small}{}\sc #1}}
{\mbox{\choosernsize{\small}{}\sc #1}}
{\mbox{\choosernsize{\tiny}{\small}\sc #1}}
{\mbox{\choosernsize{\tiny}{\tiny}\uppercase{#1}}}%
\else
\hbox{\choosernsize{\small}{}\sc #1}%
\fi}

\newif\ifsuppressrulenames
\suppressrulenamesfalse

\newif\ifbcprulessavespace
\bcprulessavespacefalse

\newif\ifbcprulestwocol
\bcprulestwocolfalse

%%% How to display a rule's name to the right of the rule
\newcommand{\inflabel}[1]{%
\ifsuppressrulenames\else
\def\lab{#1}%
\ifx\lab\empty
\relax
\else
(\rn{\lab})%
\fi\fi
}

%%% Amount of extra space to add before and after a rule
\newlength{\afterruleskip}
\setlength{\afterruleskip}{\bigskipamount}

%%% Minimum distance between a rule and its label
\newlength{\labelminsep}
\setlength{\labelminsep}{0.2em}

%%% The ``typical'' width of the column of labels: labels are allowed
%%% to project further to the left if necessary; the rules will be
%%% centered in a column of width \linewidth - \labelcolwidth
\newdimen\labelcolwidth

%%% Set the label column width by providing a ``typical'' label --
%%% i.e. a label of average length
\newcommand{\typicallabel}[1]{
\setbox \@tempboxa \hbox{\inflabel{#1}}
\labelcolwidth \wd\@tempboxa
}
\typicallabel{}

%%% A flag controlling generation of index entries
\newif \ifindexrules \indexrulesfalse

%%% Allocate some temporary registers
\newbox\@labelbox
\newbox\rulebox
\newdimen\ruledim
\newdimen\labeldim

%%% Put a rule and its label on the same line if this can be done
%%% without overlapping them; otherwise, put the label on the next
%%% line. Put a small amount of vertical space above and below.
\newcommand{\layoutruleverbose}[2]%
{\unvbox\voidb@x % to make sure we're in vmode
\addvspace{\afterruleskip}%

\setbox \rulebox \hbox{$\displaystyle #2$}

\setbox \@labelbox \hbox{#1}
\ruledim \wd \rulebox
\labeldim \wd \@labelbox

%%% Will it all fit comfortably on one line?
\@tempdima \linewidth
\advance \@tempdima -\labelcolwidth
\ifdim \@tempdima < \ruledim
\@tempdima \ruledim
\else
\advance \@tempdima by \ruledim
\divide \@tempdima by 2
\fi
\advance \@tempdima by \labelminsep
\advance \@tempdima by \labeldim
\ifdim \@tempdima < \linewidth
% Yes, everything fits on a line
\@tempdima \linewidth
\advance \@tempdima -\labelcolwidth
\hbox to \linewidth{%
\hbox to \@tempdima{%
\hfil
\box\rulebox
\hfil}%
\hfill
\hbox to 0pt{\hss\box\@labelbox}%
}%
\else
%
% Will it all fit _UN_comfortably on one line?
\@tempdima 0pt
\advance \@tempdima by \ruledim
\advance \@tempdima by \labelminsep
\advance \@tempdima by \labeldim
\ifdim \@tempdima < \linewidth
% Yes, everything fits, but not centered
\hbox to \linewidth{%
\hfil
\box\rulebox
\hskip \labelminsep
\box\@labelbox}%
\else
%
% Better put the label on the next line
\@tempdima \linewidth
\advance \@tempdima -\labelcolwidth
\hbox to \linewidth{%
\hbox to \@tempdima{%
\hfil
\box\rulebox
\hfil}
\hfil}%
\penalty10000
\hbox to \linewidth{%
\hfil
\box\@labelbox}%
\fi\fi

\addvspace{\afterruleskip}%
\@doendpe % use LaTeX's trick of inhibiting paragraph indent for
% text immediately following a rule
\ignorespaces
}

% Simplified form for when there is no label
\newcommand{\layoutrulenolabel}[1]%
{\unvbox\voidb@x % to make sure we're in vmode
\addvspace{\afterruleskip}%

\setbox \rulebox \hbox{$\displaystyle #1$}

\@tempdima \linewidth
\advance \@tempdima -\labelcolwidth
\hbox to \@tempdima{%
\hfil
\box\rulebox
\hfil}%

\addvspace{\afterruleskip}%
\@doendpe % use LaTeX's trick of inhibiting paragraph indent for
% text immediately following a rule
\ignorespaces
}

% Alternate form, for when we need to save space
%\newcommand{\layoutruleterse}[2]%
% {\noindent
% \parbox[b]{0.5\linewidth}{\layoutruleverbose{#1}{#2}}}

\newcommand{\layoutruleterse}[2]%
{\setbox \rulebox \hbox{$\displaystyle #2$}
\noindent
\parbox[b]{0.5\linewidth}
{\vspace*{0.4em} \hfill\box\rulebox\hfill~}
}

%%% Select low-level layout driver based on \bcprulessavespace flag
\newcommand{\layoutrule}[2]{%
\ifbcprulessavespace
\layoutruleterse{#1}{#2}
\else
\layoutruleverbose{#1}{#2}
\fi
}

%%% Highlighting for new versions of rules
\newif\ifnewrule \newrulefalse
\newcommand{\setrulebody}[1]{%
\ifnewrule
\@ifundefined{HIGHLIGHT}{%
\fbox{\ensuremath{#1}}%
}{%
\HIGHLIGHT{#1}}%
\else
#1
\fi
}

%%% Commands for setting axioms and rules
\newcommand{\typesetax}[1]{%
\setrulebody{%
\begin{array}{@{}c@{}}#1\end{array}}}
\newcommand{\typesetrule}[2]{%
\setrulebody{%
\frac{\begin{array}{@{}c@{}}#1\end{array}}%
{\begin{array}{@{}c@{}}#2\end{array}}}}

%%% Indexing
\newcommand{\ruleindexprefix}[1]{%
\gdef\ruleindexprefixstring{#1}}
\ruleindexprefix{}
\newcommand{\maybeindex}[1]{%
\ifindexrules
\index{\ruleindexprefixstring#1@\rn{#1}}%
\fi}

%%% Setting axioms, with or without names
\def\infax{\@ifnextchar[{\@infaxy}{\@infaxx}}
\def\@infaxx#1{%
\ifbcprulessavespace $\typesetax{#1}$%
\else \layoutrulenolabel{\typesetax{#1}}%
\fi\newrulefalse\ignorespaces}
\def\@infaxy[#1]{\maybeindex{#1}\@infax{\inflabel{#1}}}
\def\@infax#1#2{\layoutrule{#1}{\typesetax{#2}}\ignorespaces}

%%% Setting rules, with or without names
\def\infrule{\@ifnextchar[{\@infruley}{\@infrulex}}
\def\@infrulex#1#2{%
\ifbcprulessavespace $\typesetrule{#1}{#2}$%
\else \layoutrulenolabel{\typesetrule{#1}{#2}}%
\fi\newrulefalse\ignorespaces}
\def\@infruley[#1]{\maybeindex{#1}\@infrule{\inflabel{#1}}}
\def\@infrule#1#2#3{\layoutrule{#1}{\typesetrule{#2}{#3}}\ignorespaces}

%%% Miscellaneous helpful definitions
\newcommand{\andalso}{\quad\quad}

% Abbreviations
\newcommand{\infabbrev}[2]{\infax{#1 \quad\eqdef\quad #2}}

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