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% Mathpartir --- Math Paragraph for Typesetting Inference Rules
%
% Copyright (C) 2001--2005 Didier Rémy
% Hevea version by Luc Maranget
%
% Author : Didier Remy
% Version : 1.2
% Bug Reports : to author
% Web Site : http://pauillac.inria.fr/~remy/latex/
%
% WhizzyTeX is free software; you can redistribute it and/or modify
% it under the terms of the GNU General Public License as published by
% the Free Software Foundation; either version 2, or (at your option)
% any later version.
%
% Mathpartir is distributed in the hope that it will be useful,
% but WITHOUT ANY WARRANTY; without even the implied warranty of
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
% GNU General Public License for more details
% (http://pauillac.inria.fr/~remy/license/GPL).
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% File mathpartir.hva (LaTeX macros)
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% See the interface of mathpartir.sty
% However, by default \\ does a vertical break in mathpar and a horizontal cut
% in mathrule
%
% Preceeding \\ by \hva \\ does a horizontal break in mathpar and a vertical
% break in mathrule.
%
% \hva is ignored in latex more.
\usepackage {keyval}
\let\latexcr\\
%%% Styles for mathpar
\newcommand{\mp@row@style}
{border-collapse:separate;border-spacing:2ex;width:100\%;margin:0ex;}
\newstyle{.mprow}{\mp@row@style}
\newstyle{.vmprow}{\mp@row@style empty-cells:show; border:solid \@magenta{} 2px}
\newcommand{\mp@cell@style}{padding:0px;width:auto;}
\newstyle{.mprcell}{\mp@cell@style}
\newstyle{.vmprcell}{\mp@cell@style border:dotted \@magenta{} 2px;}
\setenvclass{mathpar}{mathpar}
\ifverbd
\setenvclass{mprow}{vmprow}
\setenvclass{mprcell}{vmprcell}
\else
\setenvclass{mprow}{mprow}
\setenvclass{mprcell}{mprcell}
\fi
%% Open/close table elements
\def\open@mathpar@table{\@open{table}{\envclass@attr{mprow}}}
\def\open@mprow{\@open{tr}{style="vertical-align:middle"}}
\def\close@mprow{\@close{tr}}
\def\open@mpcell{\@open{td}{\@addstyle{text-align:center}{\envclass@attr[ ]{mprcell}}}\displaymath}
\def\close@mpcell{\enddisplaymath\@close{td}}
\def\force@mpcell{\enddisplaymath\@force{td}}
\def\open@mpfstcell{\open@mpcell}
\def\close@mplstcell{\force@mpcell}
\def\mathpar@hspace{\push@styles\close@mpcell\open@mpcell\pop@styles\@skip@blanks}
\def\mathpar@vspace
{\push@styles\close@mplstcell\close@mprow\@close{table}%
\open@mathpar@table\open@mprow\open@mpfstcell\pop@styles\@skip@blanks}%
\def\mathpar@hva#1{\ifx#1\and\mathpar@vspace\else\mathpar@hspace\fi}%
%%exported mathpar
\newenvironment{mathpar}[1][]
{\@open{div}{\envclass@attr{mathpar}}
\let\and\mathpar@hspace\let\par\mathpar@vspace\let\\\mathpar@vspace\let\hva\mathpar@hva%
\open@mathpar@table\open@mprow\open@mpfstcell}
{\close@mplstcell\close@mprow\@close{table}\@close{div}}
%%%% Type Inference Rules (TIR)
\newsavebox{\mpr@save@arg}%
\newcommand{\mpr@globle}[1]{}
\newcommand {\@mpr@name}[1]{\@tir@name{#1}\let\mpr@name\mpr@globle}
\def \mpr@line@hva #1{\mpr@break@display}
\def \mpr@break@display
{\sbox{\mpr@save@arg}{\mpr@line@arg}%
\endmpr@line\mpr@line{\usebox{\mpr@save@arg}}}
%%% this may not be robust (if nextchar is special char)
%%% also may not want this semantics
\def \@latexcr #1{%
\def \@test {#1}\ifx \@test \@latexcr@char \latexcr \else
\qquad #1\fi}
\newcommand{\mpr@valign}[1]
{\ifthenelse{\equal{#1}{}}{}{style="vertical-align:#1"}}
\newcommand{\mpr@line}[1]
{\@open{tr}{\mpr@valign{#1}}%
\ifx\mpr@label\mpr@L\@open{td}{}\mpr@name{\@rule@name}~\@force{td}\fi
\@open{td}{style="whitespace:nowrap;text-align:\ifmpr@center{}center\else{}left\fi"}%
\bgroup\def\mpr@line@arg{#1}%
\@open{display}{\mpr@valign{#1}}%
\def\\{\@latexcr{\qquad}}\def\and{\@latexcr{\qquad}}%
\let\hva\mpr@line@hva}
\newcommand{\endmpr@line}
{\@close{display}\egroup\@force{td}%
\ifx\mpr@label\mpr@R\@open{td}{}~\mpr@name{\@rule@name}\@force{td}\fi
\@close{tr}}
\def \mpr@empty {}
\newif \ifmpr@center \mpr@centertrue
\newif \ifmpr@vdots \mpr@vdotsfalse
\newcounter{mpr@count}
\newcommand{\mpr@output@vdots}
{\vdots%
\setcounter{mpr@count}{\@lengthtonchar{\mpr@vdots}}%
\whiledo{\value{mpr@count}>1}{\@br\vdots\addtocounter{mpr@count}{-1}}}
\def\mpr@emptyL{\ifx\mpr@label\mpr@L\@open{td}{}\@force{td}\fi}
\def\mpr@emptyR{\ifx\mpr@label\mpr@R\@open{td}{}\@force{td}\fi}
\newcommand{\@mpr@table}{\@open{table}{style="border:0;border-spacing:1px;border-collapse:separate" class="cellpadding0"}}
%Vertical alignement of premise and conclusion
\newcommand{\mpr@vert@premise}{bottom}
\newcommand{\mpr@vert@conclusion}{bottom}
\newcommand {\@inferrule}[2]
{\bgroup
\let \\ \latexcr%
\@mpr@table%
\ifx\mpr@label\mpr@C
\@open{tr}{}\@open{td}{style="text-align:left"}%
\mpr@name{\@rule@name}%
\@close{td}\@close{tr}%
\fi
\def \@@arg{#1}\ifx \@@arg \mpr@empty%
\mpr@line{}#2\endmpr@line%
\else
\def \@@arg{#2}\ifx \@@arg \mpr@empty%
\mpr@line{}#1\endmpr@line%
\else
\mpr@line{\mpr@vert@premise}#1\endmpr@line%
\@hhline%
\mpr@line{\mpr@vert@conclusion}#2\endmpr@line%
\fi\fi%
\ifmpr@vdots%
\@open{tr}{style="vertical-align:middle"}%
\mpr@emptyL
\@open{td}{style="text-align:center"}\mpr@output@vdots\@force{td}%
\mpr@emptyR
\@close{tr}%
\fi
\@force{table}%
\egroup%
}
\def\mpr@hhline@color{green}
\def \@hhline
{\@open{tr}{}%
\mpr@emptyL
\@open{td}{style="background-color:\mpr@hhline@color;height:3px"}\@force{td}%
\mpr@emptyR
\@force{tr}}
\newcommand {\inferrule*}[3][]{%
\bgroup\let\@tir@name\RefTirName%
\mpr@vdotsfalse\let\mpr@label\mpr@N\let\mpr@name\@mpr@name%Default
\@setkeys {mpr}{#1}%
\@inferrule{#2}{#3}%
\egroup}
\newcommand {\inferrule}[3][]{%
\def\mpr@arg{#1}\ifx\mpr@arg\mpr@empty
\inferrule*{#2}{#3}\else
\inferrule*[before={\let\@tir@name\TirName},lab={#1},center]{#2}{#3}\fi}
\def \mprset {\setkeys{mprset}}
\define@key {mprset}{flushleft}[]{\mpr@centerfalse}
\define@key {mprset}{center}[]{\mpr@centertrue}
\define@key {mpr}{flushleft}[]{\mpr@centerfalse}
\define@key {mpr}{center}[]{\mpr@centertrue}
\define@key {mpr}{width}{}
\define@key {mpr}{before}{#1}
\define@key {mpr}{narrower}{}
\define@key {mpr}{leftskip}{}
\define@key {mpr}{rightskip}{}
\def\mpr@N{N}\def\mpr@C{C}\def\mpr@R{R}\def\mpr@L{L}\let\mpr@label\mpr@N
\def\mpr@set@name#1{\def \@rule@name {\mpr@name{#1}}}
\define@key {mpr}{lab}{\let\mpr@label\mpr@C\mpr@set@name{#1}}
\define@key {mpr}{Lab}{\let\mpr@label\mpr@C\mpr@set@name{#1}}
\define@key {mpr}{left}{\let\mpr@label\mpr@L\mpr@set@name{#1}}
\define@key {mpr}{Left}{\let\mpr@label\mpr@L\mpr@set@name{#1}}
\define@key {mpr}{Right}{\let\mpr@label\mpr@R\mpr@set@name{#1}}
\define@key {mpr}{right}{\let\mpr@label\mpr@R\mpr@set@name{#1}}
\define@key {mpr}{vdots}{\mpr@vdotstrue\def\mpr@vdots{#1}}
\define@key {mpr}{after}{}
\define@key {mpr}{fraction}{\hva@warn{fraction key ignored (mathpartir)}}
\define@key {mpr}{myfraction}{\hva@warn{myfraction key ignored (mathpartir)}}
%%%%Synonyms
\@ifundefined{infer}{\let\infer\inferrule}{}
\@ifundefined{infer*}{\let\infer*\inferrule*}{}
%%%Label formatting
\newcommand {\tir@name}[1]{\textsc{\scriptsize {#1}}}
\let\RefTirName\tir@name
\let\TirName\tir@name
\endinput
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