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lvspec/raterspec/param.sty

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% LoVullo rater specification params
%%
\NeedsTeXFormat{LaTeX2e}
\ProvidesClass{raterspec/param}
\ProcessOptions\relax
% special keywords for base param types
\def\@coreptype{core}
\def\@enumptype{enum}
\def\@unionptype{union}
\def\typedef{%
\begingroup% ended by \@dotypedef
\catcode`\_=11\relax
\@dotypedef
}
\def\@dotypedef#1 #2: #3 \par{%
\goodbreak%
\index{parameter type!#2@\texttt{#2}|(}%
\begingroup%
% given foo<bar>, get foo and bar separately
\edef\@root{\@ptype@root#1<||}%
\edef\@type{\@ptype@type#1<#1>||}%
\expandafter\gdef\csname ptype@#2\endcsname{#3}%
% place definition into aux file; will be available next pass
\protected@write\@auxout{}{%
\string\expandafter\string\gdef
\string\csname\space ptype@#2\string\endcsname{#3}%
}%
% typeset definition with link
\item[%
\hypertarget{@ptype:#2}{#2}%
\ifx\@root\@coreptype\else%
\ $\in\textrm{\rm\@type}$%
\fi%
]\hfill\\%
\@margin@sig%
% ensure that the parent type actually exists
\ifx\@root\@coreptype\else%
\expandafter\ifx\csname ptype@\@type\endcsname\relax%
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\PackageTenativeError{raterspec}{%
unknown parent param type `\@type' for `#2'}
\fi%
\fi%
% process any keywords
\ifx\@root\@enumptype
\aftergroup\@typedef@enum
\else\ifx\@root\@unionptype
\aftergroup\@typedef@union
\fi\fi
\index{parameter type!#2@\texttt{#2}|)}%
#3\par
\endgroup
\endgroup% from \typedef
}
% given a type foo<bar>, returns foo
\def\@ptype@root#1<#2||{#1}
% given a type foo<bar>, returns bar
\def\@ptype@type#1<#2>#3||{#2}
% strips the description and then puts all enums in an aligned environment
\def\@typedef@enum#1\enumv#2\par{%
#1%
\vskip0em\relax
\begingroup
\small
% provide some extra give to prevent this from appearing on its own line
\vspace{0em plus 0.5\parskip}%
\goodbreak
{\bf Defined values:}\\
\vspace{-1.5\parskip}%
\begin{longtable}{lc|l}
% restore the enumv that we gobbled up
\enumv#2
\end{longtable}
\endgroup
}
\def\enumv[#1]#2#3{%
% define constant
\expandafter\gdef\csname const@#2\endcsname{#1}%
\expandafter\gdef\csname const@value@#2\endcsname{#3}%
% place definition into aux file; will be available next pass
\protected@write\@auxout{}{%
\string\expandafter\string\gdef
\string\csname\space const@#2\string\endcsname{#1}%
\string\expandafter\string\gdef
\string\csname\space constvalue@#2\string\endcsname{#3}%
}%
% typeset
\index{constant!{\tt#2}}%
{\tt\hypertarget{@const:#2}{#2}} & $#3$ & #1 \\
}
% strips the description and then puts all enums in an aligned environment
\def\@typedef@union#1\unionv#2\par{%
#1%
\vskip0em\relax
\begingroup
\small
{\bf Any defined value of:}%
\vspace{-\parskip}%
\begin{itemize}
\setlength{\itemsep}{-\parskip}%
% restore the unionv that we gobbled up
\unionv#2
\end{itemize}
\endgroup
}
\def\unionv#1{%
% does this type exist?
\expandafter\ifx\csname ptype@#1\endcsname\relax%
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\PackageTenativeError{raterspec}{unknown param type `#1' for union}
\fi%
\item{\typeref{#1}}
}
\def\typeref#1{%
\index{parameter type!#1@\texttt{#1}}%
\hyperlink{@ptype:#1}{\tt#1}%
}
\let\type\typeref
\def\constref #1{%
\@ifnumeric{#1}%
% numeric constants are simply output with no hyperlink
$#1$%
\else
\index{constant!{\tt#1}}\hyperlink{@const:#1}{\tt#1}%
\fi
}
\let\const\constref
% constant reference, show description
\def\constrefd#1{%
\@ifnumeric{#1}%
% numeric constants are simply output with no hyperlink
$#1$%
\else
\index{constant!{\tt#1}}%
\hyperlink{@const:#1}%
{\csname const@#1\endcsname}%
\fi
}
\def\constrefdd#1{\constrefd{#1}\dotfill}
% constant reference, show value
\def\constrefv#1{%
\@ifnumeric{#1}%
% numeric constants are simply output with no hyperlink
$#1$%
\else
\index{constant!{\tt#1}}%
\hyperlink{@const:#1}%
{\csname const@value@#1\endcsname}%
\fi
}
% link to constant with alternate text
\def\constrefalt#1#2{%
\index{constant!{\tt#1}}%
\hyperlink{@const:#1}{#2}%
}
\def\@type@exists@err#1{{%
\expandafter\let\expandafter\@chk\csname ptype@#1\endcsname
\ifx\@chk\relax
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\PackageTenativeError{raterspec}{parameter `#1' is undefined}%
\fi
}}
\def\@const@exists@err#1{{%
% ignore numeric constants (lazy check; anything that begins with a number)
\@ifnumeric{#1}\else
\expandafter\let\expandafter\@chk\csname const@#1\endcsname
\ifx\@chk\relax
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\PackageTenativeError{raterspec}{constant `#1' is undefined}%
\fi
\fi
}}
\def\@const@desc#1{{%
\@ifnumeric{#1}%
% just output the text
$#1$%
\else
% output desc
\csname const@#1\endcsname
\fi
}}
% denotes a param that will likely be calculated
\def\metaparamdef{\paramdef}
% param definition
% note that the description is included in this input as well; this allows us to
% use this information for code generation/etc
\def\paramdef{%
\begingroup
\catcode`_=11\relax
\@doparamdef
}
\def\@doparamdef#1 #2: #3 \par{%
\goodbreak%
\index{parameter!#2@\texttt{#2}|(}%
\begingroup%
\def\@given{#1}%
% given foo<bar>, get foo and bar separately
\edef\@root{\@ptype@root#1<||}%
\edef\@type{\@ptype@type#1<#1>||}%
\expandafter\gdef\csname param@#2\endcsname{#3}%
% place definition into aux file; will be available next pass
\protected@write\@auxout{}{%
\string\expandafter\string\gdef
\string\csname\space param@#2\string\endcsname{#3}%
}%
% does the given type exist (note that this check assumes that the typedef
% appears before the param in the specs, as is currently the case)
\expandafter\ifx\csname ptype@\@type\endcsname\relax%
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\PackageTenativeError{raterspec}{unknown param type: \@type}
\fi%
% typeset definition with link
\item[%
\hypertarget{@param:#2}{{\tt#2}}%
\ $\in\textrm{%
\rm\typeref{\@type}%
% output root only if provided (if not, then because of how \@type
% called \@ptype@type, it will be equal to #1)
\ifx\@root\@given\else%
\ $\langle$\@root$\rangle$
\fi
}$%
]\hfill\\%
\@margin@sig%
% remove mysterious space from margin sig
\hskip-1ex\relax%
#3%
\ifx\@root\@given
\@codegen{<lv:param name="#2" type="\@type" desc="#3"/>}%
\else
\@codegen{<lv:param name="#2" type="\@type" set="\@root"%
\space desc="#3"/>%
}%
\fi
\endgroup%
\index{parameter!#2@\texttt{#2}|)}%
\endgroup
}
\def\paramref{%
\begingroup% ended by \@dotypedef
\catcode`\_=11\relax
\@doparamref
}
\def\@doparamref#1{%
% prevent scantokens from adding a space at the end
\endlinechar-1\relax
\expandafter\let\expandafter\@@chk\csname param@#1\endcsname
\ifx\@@chk\relax
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\PackageTenativeError{raterspec}{unknown param: #1}
\fi
\index{parameter!#1@\texttt{#1}}%
\hyperlink{@param:#1}%
{\tt\scantokens{#1}}%
\endgroup
}
\let\param\paramref
\def\paramrefd#1{%
\expandafter\let\expandafter\@@pchk\csname param@#1\endcsname
\ifx\@@pchk\empty
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\PackageTenativeError{raterspec}{Unknown parameter: #1}%
\else
% output
\@@pchk
\fi
}
\def\locparam#1{%
\ifmmode
\mathop{\paramref{#1}_\loc}
\else
$\locparam{#1}$%
\fi
}