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% The LaTeX generator wraps all custom spans in \DUrole{class}{contents}. That
% command then checks for another command called \DUroleclass.
% Most of our CSS class names have dashes, so we need ‘\csname … \endcsname’
% <magic>
% \def\newcssclass#1#2{\expandafter\def\csname DUrole#1\endcsname ##1{#2}}
% </magic>
\RequirePackage{adjustbox}
\RequirePackage{xcolor}
\RequirePackage{amsmath}
\definecolor{nbordercolor}{HTML}{AAAAAA}
\definecolor{nbgcolor}{HTML}{EAEAEA}
\definecolor{nholecolor}{HTML}{4E9A06}
\newlength{\nscriptsize}
\setlength{\nscriptsize}{0.8em}
\newlength{\nboxsep}
\setlength{\nboxsep}{2pt}
\newcommand*{\scriptsmallsquarebox}[1]{%
% Force width
\makebox[\nscriptsize]{%
% Force height and center vertically
\raisebox{\dimexpr .5\nscriptsize - .5\height \relax}[\nscriptsize][0pt]{%
% Cancel depth
\raisebox{\depth}{#1}}}}
\newcommand*{\nscriptdecoratedbox}[2][]{\adjustbox{cfbox=nbordercolor 0.5pt 0pt,bgcolor=nbgcolor}{#2}}
\newcommand*{\nscriptbox}[1]{\nscriptdecoratedbox{\scriptsmallsquarebox{\textbf{#1}}}}
\newcommand*{\nscript}[2]{\text{\hspace{-.5\nscriptsize}\raisebox{-#1\nscriptsize}{\nscriptbox{\small#2}}}}
\newcommand*{\nsup}[1]{^{\nscript{0.15}{#1}}}
\newcommand*{\nsub}[1]{_{\nscript{0.35}{#1}}}
\newcommand*{\nnotation}[1]{#1}
\newcommand*{\nbox}[1]{\adjustbox{cfbox=nbordercolor 0.5pt \nboxsep,bgcolor=nbgcolor}{#1}}
\newcommand*{\nrepeat}[1]{\text{\nbox{#1\hspace{.5\nscriptsize}}}}
\newcommand*{\nwrapper}[1]{\ensuremath{\displaystyle#1}} % https://tex.stackexchange.com/questions/310877/
\newcommand*{\nhole}[1]{\textit{\color{nholecolor}#1}}
% <magic>
% Make it easier to define new commands matching CSS classes
\newcommand{\newcssclass}[2]{%
\expandafter\def\csname DUrole#1\endcsname##1{#2}
}
% </magic>
% https://tex.stackexchange.com/questions/490262/
\def\naltsep{}
\newsavebox{\nsavedalt}
\newlength{\naltvruleht}
\newlength{\naltvruledp}
\def\naltvrule{\smash{\vrule height\naltvruleht depth\naltvruledp}}
\newcommand{\nalternative}[2]{%
% First measure the contents of the box without the bar
\bgroup%
\def\naltsep{}%
\savebox{\nsavedalt}{#1}%
\setlength{\naltvruleht}{\ht\nsavedalt}%
\setlength{\naltvruledp}{\dp\nsavedalt}%
\addtolength{\naltvruleht}{#2}%
\addtolength{\naltvruledp}{#2}%
% Then redraw it with the bar
\def\naltsep{\naltvrule}%
#1\egroup}
\newcssclass{notation-sup}{\nsup{#1}}
\newcssclass{notation-sub}{\nsub{#1}}
\newcssclass{notation}{\nnotation{\textbf{#1}}}
\newcssclass{repeat}{\nrepeat{#1}}
\newcssclass{repeat-wrapper}{\nwrapper{#1}}
\newcssclass{repeat-wrapper-with-sub}{\nwrapper{#1}}
\newcssclass{hole}{\nhole{#1}}
\newcssclass{alternative}{\nalternative{\nbox{#1}}{0pt}}
\newcssclass{alternative-block}{#1}
\newcssclass{repeated-alternative}{\nalternative{#1}{\nboxsep}}
\newcssclass{alternative-separator}{\quad\naltsep{}\quad}
\newcssclass{prodn-table}{%
\begin{savenotes}
\sphinxattablestart
\begin{tabulary}{\linewidth}[t]{lLLL}
#1
\end{tabulary}
\par
\sphinxattableend
\end{savenotes}}
% latex puts targets 1 line below where they should be; prodn-target corrects for this
\newcssclass{prodn-target}{\raisebox{\dimexpr \nscriptsize \relax}{#1}}
\newcssclass{prodn-cell-nonterminal}{#1 &}
\newcssclass{prodn-cell-op}{#1 &}
\newcssclass{prodn-cell-production}{#1 &}
\newcssclass{prodn-cell-tag}{#1\\}
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