\chapter{The grammar of the GF language}

\newcommand{\emptyP}{\mbox{$\epsilon$}}
\newcommand{\terminal}[1]{\mbox{{\texttt {#1}}}}
\newcommand{\nonterminal}[1]{\mbox{$\langle \mbox{{\sl #1 }} \! \rangle$}}
\newcommand{\arrow}{\mbox{::=}}
\newcommand{\delimit}{\mbox{$|$}}
\newcommand{\reserved}[1]{\mbox{{\texttt {#1}}}}
\newcommand{\literal}[1]{\mbox{{\texttt {#1}}}}
\newcommand{\symb}[1]{\mbox{{\texttt {#1}}}}

This document was automatically generated by the {\em BNF-Converter}. It was generated together with the lexer, the parser, and the abstract syntax module, which guarantees that the document matches with the implementation of the language (provided no hand-hacking has taken place).

\section{The lexical structure of GF}
\subsection{Identifiers}
Identifiers \nonterminal{Ident} are unquoted strings beginning with a letter,
followed by any combination of letters, digits, and the characters {\tt \_ '},
reserved words excluded.


\subsection{Literals}
Integer literals \nonterminal{Int}\ are nonempty sequences of digits.


String literals \nonterminal{String}\ have the form
\terminal{"}$x$\terminal{"}, where $x$ is any sequence of any characters
except \terminal{"}\ unless preceded by \verb6\6.


Double-precision float literals \nonterminal{Double}\ have the structure
indicated by the regular expression $\nonterminal{digit}+ \mbox{{\it `.'}} \nonterminal{digit}+ (\mbox{{\it `e'}} \mbox{{\it `-'}}? \nonterminal{digit}+)?$ i.e.\
two sequences of digits separated by a decimal point, optionally
followed by an unsigned or negative exponent.




\subsection{Reserved words and symbols}
The set of reserved words is the set of terminals appearing in the grammar. Those reserved words that consist of non-letter characters are called symbols, and they are treated in a different way from those that are similar to identifiers. The lexer follows rules familiar from languages like Haskell, C, and Java, including longest match and spacing conventions.

The reserved words used in GF are the following: \\

\begin{tabular}{lll}
{\reserved{PType}} &{\reserved{Str}} &{\reserved{Strs}} \\
{\reserved{Type}} &{\reserved{abstract}} &{\reserved{case}} \\
{\reserved{cat}} &{\reserved{concrete}} &{\reserved{data}} \\
{\reserved{def}} &{\reserved{flags}} &{\reserved{fun}} \\
{\reserved{in}} &{\reserved{incomplete}} &{\reserved{instance}} \\
{\reserved{interface}} &{\reserved{let}} &{\reserved{lin}} \\
{\reserved{lincat}} &{\reserved{lindef}} &{\reserved{of}} \\
{\reserved{open}} &{\reserved{oper}} &{\reserved{param}} \\
{\reserved{pre}} &{\reserved{printname}} &{\reserved{resource}} \\
{\reserved{strs}} &{\reserved{table}} &{\reserved{transfer}} \\
{\reserved{variants}} &{\reserved{where}} &{\reserved{with}} \\
\end{tabular}\\

The symbols used in GF are the following: \\

\begin{tabular}{lll}
{\symb{;}} &{\symb{{$=$}}} &{\symb{:}} \\
{\symb{{$-$}{$>$}}} &{\symb{\{}} &{\symb{\}}} \\
{\symb{**}} &{\symb{,}} &{\symb{(}} \\
{\symb{)}} &{\symb{[}} &{\symb{]}} \\
{\symb{{$-$}}} &{\symb{.}} &{\symb{{$|$}}} \\
{\symb{?}} &{\symb{{$<$}}} &{\symb{{$>$}}} \\
{\symb{@}} &{\symb{!}} &{\symb{*}} \\
{\symb{{$+$}}} &{\symb{{$+$}{$+$}}} &{\symb{$\backslash$}} \\
{\symb{{$=$}{$>$}}} &{\symb{\_}} &{\symb{\$}} \\
{\symb{/}} & & \\
\end{tabular}\\

\subsection{Comments}
Single-line comments begin with {\symb{{$-$}{$-$}}}. \\Multiple-line comments are  enclosed with {\symb{\{{$-$}}} and {\symb{{$-$}\}}}.

\section{The syntactic structure of GF}
Non-terminals are enclosed between $\langle$ and $\rangle$. 
The symbols  {\arrow}  (production),  {\delimit}  (union) 
and {\emptyP} (empty rule) belong to the BNF notation. 
All other symbols are terminals.\\

\begin{tabular}{lll}
{\nonterminal{Grammar}} & {\arrow}  &{\nonterminal{ListModDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListModDef}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{ModDef}} {\nonterminal{ListModDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ModDef}} & {\arrow}  &{\nonterminal{ModDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{ComplMod}} {\nonterminal{ModType}} {\terminal{{$=$}}} {\nonterminal{ModBody}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ModType}} & {\arrow}  &{\terminal{abstract}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{resource}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{interface}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{concrete}} {\nonterminal{Ident}} {\terminal{of}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{instance}} {\nonterminal{Ident}} {\terminal{of}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{transfer}} {\nonterminal{Ident}} {\terminal{:}} {\nonterminal{Open}} {\terminal{{$-$}{$>$}}} {\nonterminal{Open}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ModBody}} & {\arrow}  &{\nonterminal{Extend}} {\nonterminal{Opens}} {\terminal{\{}} {\nonterminal{ListTopDef}} {\terminal{\}}}  \\
 & {\delimit}  &{\nonterminal{ListIncluded}}  \\
 & {\delimit}  &{\nonterminal{Included}} {\terminal{with}} {\nonterminal{ListOpen}}  \\
 & {\delimit}  &{\nonterminal{Included}} {\terminal{with}} {\nonterminal{ListOpen}} {\terminal{**}} {\nonterminal{Opens}} {\terminal{\{}} {\nonterminal{ListTopDef}} {\terminal{\}}}  \\
 & {\delimit}  &{\nonterminal{ListIncluded}} {\terminal{**}} {\nonterminal{Included}} {\terminal{with}} {\nonterminal{ListOpen}}  \\
 & {\delimit}  &{\nonterminal{ListIncluded}} {\terminal{**}} {\nonterminal{Included}} {\terminal{with}} {\nonterminal{ListOpen}} {\terminal{**}} {\nonterminal{Opens}} {\terminal{\{}} {\nonterminal{ListTopDef}} {\terminal{\}}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListTopDef}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{TopDef}} {\nonterminal{ListTopDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Extend}} & {\arrow}  &{\nonterminal{ListIncluded}} {\terminal{**}}  \\
 & {\delimit}  &{\emptyP} \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListOpen}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Open}}  \\
 & {\delimit}  &{\nonterminal{Open}} {\terminal{,}} {\nonterminal{ListOpen}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Opens}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\terminal{open}} {\nonterminal{ListOpen}} {\terminal{in}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Open}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{(}} {\nonterminal{QualOpen}} {\nonterminal{Ident}} {\terminal{)}}  \\
 & {\delimit}  &{\terminal{(}} {\nonterminal{QualOpen}} {\nonterminal{Ident}} {\terminal{{$=$}}} {\nonterminal{Ident}} {\terminal{)}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ComplMod}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\terminal{incomplete}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{QualOpen}} & {\arrow}  &{\emptyP} \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListIncluded}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Included}}  \\
 & {\delimit}  &{\nonterminal{Included}} {\terminal{,}} {\nonterminal{ListIncluded}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Included}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{[}} {\nonterminal{ListIdent}} {\terminal{]}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{{$-$}}} {\terminal{[}} {\nonterminal{ListIdent}} {\terminal{]}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Def}} & {\arrow}  &{\nonterminal{ListName}} {\terminal{:}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{ListName}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{Name}} {\nonterminal{ListPatt}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{ListName}} {\terminal{:}} {\nonterminal{Exp}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{TopDef}} & {\arrow}  &{\terminal{cat}} {\nonterminal{ListCatDef}}  \\
 & {\delimit}  &{\terminal{fun}} {\nonterminal{ListFunDef}}  \\
 & {\delimit}  &{\terminal{data}} {\nonterminal{ListFunDef}}  \\
 & {\delimit}  &{\terminal{def}} {\nonterminal{ListDef}}  \\
 & {\delimit}  &{\terminal{data}} {\nonterminal{ListDataDef}}  \\
 & {\delimit}  &{\terminal{param}} {\nonterminal{ListParDef}}  \\
 & {\delimit}  &{\terminal{oper}} {\nonterminal{ListDef}}  \\
 & {\delimit}  &{\terminal{lincat}} {\nonterminal{ListPrintDef}}  \\
 & {\delimit}  &{\terminal{lindef}} {\nonterminal{ListDef}}  \\
 & {\delimit}  &{\terminal{lin}} {\nonterminal{ListDef}}  \\
 & {\delimit}  &{\terminal{printname}} {\terminal{cat}} {\nonterminal{ListPrintDef}}  \\
 & {\delimit}  &{\terminal{printname}} {\terminal{fun}} {\nonterminal{ListPrintDef}}  \\
 & {\delimit}  &{\terminal{flags}} {\nonterminal{ListFlagDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{CatDef}} & {\arrow}  &{\nonterminal{Ident}} {\nonterminal{ListDDecl}}  \\
 & {\delimit}  &{\terminal{[}} {\nonterminal{Ident}} {\nonterminal{ListDDecl}} {\terminal{]}}  \\
 & {\delimit}  &{\terminal{[}} {\nonterminal{Ident}} {\nonterminal{ListDDecl}} {\terminal{]}} {\terminal{\{}} {\nonterminal{Integer}} {\terminal{\}}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{FunDef}} & {\arrow}  &{\nonterminal{ListIdent}} {\terminal{:}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{DataDef}} & {\arrow}  &{\nonterminal{Ident}} {\terminal{{$=$}}} {\nonterminal{ListDataConstr}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{DataConstr}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{.}} {\nonterminal{Ident}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListDataConstr}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{DataConstr}}  \\
 & {\delimit}  &{\nonterminal{DataConstr}} {\terminal{{$|$}}} {\nonterminal{ListDataConstr}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ParDef}} & {\arrow}  &{\nonterminal{Ident}} {\terminal{{$=$}}} {\nonterminal{ListParConstr}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{{$=$}}} {\terminal{(}} {\terminal{in}} {\nonterminal{Ident}} {\terminal{)}}  \\
 & {\delimit}  &{\nonterminal{Ident}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ParConstr}} & {\arrow}  &{\nonterminal{Ident}} {\nonterminal{ListDDecl}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{PrintDef}} & {\arrow}  &{\nonterminal{ListName}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{FlagDef}} & {\arrow}  &{\nonterminal{Ident}} {\terminal{{$=$}}} {\nonterminal{Ident}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListDef}} & {\arrow}  &{\nonterminal{Def}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{Def}} {\terminal{;}} {\nonterminal{ListDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListCatDef}} & {\arrow}  &{\nonterminal{CatDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{CatDef}} {\terminal{;}} {\nonterminal{ListCatDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListFunDef}} & {\arrow}  &{\nonterminal{FunDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{FunDef}} {\terminal{;}} {\nonterminal{ListFunDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListDataDef}} & {\arrow}  &{\nonterminal{DataDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{DataDef}} {\terminal{;}} {\nonterminal{ListDataDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListParDef}} & {\arrow}  &{\nonterminal{ParDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{ParDef}} {\terminal{;}} {\nonterminal{ListParDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListPrintDef}} & {\arrow}  &{\nonterminal{PrintDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{PrintDef}} {\terminal{;}} {\nonterminal{ListPrintDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListFlagDef}} & {\arrow}  &{\nonterminal{FlagDef}} {\terminal{;}}  \\
 & {\delimit}  &{\nonterminal{FlagDef}} {\terminal{;}} {\nonterminal{ListFlagDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListParConstr}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{ParConstr}}  \\
 & {\delimit}  &{\nonterminal{ParConstr}} {\terminal{{$|$}}} {\nonterminal{ListParConstr}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListIdent}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{,}} {\nonterminal{ListIdent}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Name}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{[}} {\nonterminal{Ident}} {\terminal{]}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListName}} & {\arrow}  &{\nonterminal{Name}}  \\
 & {\delimit}  &{\nonterminal{Name}} {\terminal{,}} {\nonterminal{ListName}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{LocDef}} & {\arrow}  &{\nonterminal{ListIdent}} {\terminal{:}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{ListIdent}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{ListIdent}} {\terminal{:}} {\nonterminal{Exp}} {\terminal{{$=$}}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListLocDef}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{LocDef}}  \\
 & {\delimit}  &{\nonterminal{LocDef}} {\terminal{;}} {\nonterminal{ListLocDef}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp6}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Sort}}  \\
 & {\delimit}  &{\nonterminal{String}}  \\
 & {\delimit}  &{\nonterminal{Integer}}  \\
 & {\delimit}  &{\nonterminal{Double}}  \\
 & {\delimit}  &{\terminal{?}}  \\
 & {\delimit}  &{\terminal{[}} {\terminal{]}}  \\
 & {\delimit}  &{\terminal{data}}  \\
 & {\delimit}  &{\terminal{[}} {\nonterminal{Ident}} {\nonterminal{Exps}} {\terminal{]}}  \\
 & {\delimit}  &{\terminal{[}} {\nonterminal{String}} {\terminal{]}}  \\
 & {\delimit}  &{\terminal{\{}} {\nonterminal{ListLocDef}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{{$<$}}} {\nonterminal{ListTupleComp}} {\terminal{{$>$}}}  \\
 & {\delimit}  &{\terminal{{$<$}}} {\nonterminal{Exp}} {\terminal{:}} {\nonterminal{Exp}} {\terminal{{$>$}}}  \\
 & {\delimit}  &{\terminal{(}} {\nonterminal{Exp}} {\terminal{)}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp5}} & {\arrow}  &{\nonterminal{Exp5}} {\terminal{.}} {\nonterminal{Label}}  \\
 & {\delimit}  &{\nonterminal{Exp6}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp4}} & {\arrow}  &{\nonterminal{Exp4}} {\nonterminal{Exp5}}  \\
 & {\delimit}  &{\terminal{table}} {\terminal{\{}} {\nonterminal{ListCase}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{table}} {\nonterminal{Exp6}} {\terminal{\{}} {\nonterminal{ListCase}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{table}} {\nonterminal{Exp6}} {\terminal{[}} {\nonterminal{ListExp}} {\terminal{]}}  \\
 & {\delimit}  &{\terminal{case}} {\nonterminal{Exp}} {\terminal{of}} {\terminal{\{}} {\nonterminal{ListCase}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{variants}} {\terminal{\{}} {\nonterminal{ListExp}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{pre}} {\terminal{\{}} {\nonterminal{Exp}} {\terminal{;}} {\nonterminal{ListAltern}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{strs}} {\terminal{\{}} {\nonterminal{ListExp}} {\terminal{\}}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{@}} {\nonterminal{Exp6}}  \\
 & {\delimit}  &{\nonterminal{Exp5}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp3}} & {\arrow}  &{\nonterminal{Exp3}} {\terminal{!}} {\nonterminal{Exp4}}  \\
 & {\delimit}  &{\nonterminal{Exp3}} {\terminal{*}} {\nonterminal{Exp4}}  \\
 & {\delimit}  &{\nonterminal{Exp3}} {\terminal{**}} {\nonterminal{Exp4}}  \\
 & {\delimit}  &{\nonterminal{Exp4}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp1}} & {\arrow}  &{\nonterminal{Exp2}} {\terminal{{$+$}}} {\nonterminal{Exp1}}  \\
 & {\delimit}  &{\nonterminal{Exp2}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp}} & {\arrow}  &{\nonterminal{Exp1}} {\terminal{{$+$}{$+$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\terminal{$\backslash$}} {\nonterminal{ListBind}} {\terminal{{$-$}{$>$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\terminal{$\backslash$}} {\terminal{$\backslash$}} {\nonterminal{ListBind}} {\terminal{{$=$}{$>$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{Decl}} {\terminal{{$-$}{$>$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{Exp3}} {\terminal{{$=$}{$>$}}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\terminal{let}} {\terminal{\{}} {\nonterminal{ListLocDef}} {\terminal{\}}} {\terminal{in}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\terminal{let}} {\nonterminal{ListLocDef}} {\terminal{in}} {\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{Exp3}} {\terminal{where}} {\terminal{\{}} {\nonterminal{ListLocDef}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{in}} {\nonterminal{Exp5}} {\nonterminal{String}}  \\
 & {\delimit}  &{\nonterminal{Exp1}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exp2}} & {\arrow}  &{\nonterminal{Exp3}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListExp}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Exp}}  \\
 & {\delimit}  &{\nonterminal{Exp}} {\terminal{;}} {\nonterminal{ListExp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Exps}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Exp6}} {\nonterminal{Exps}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Patt2}} & {\arrow}  &{\terminal{\_}}  \\
 & {\delimit}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{.}} {\nonterminal{Ident}}  \\
 & {\delimit}  &{\nonterminal{Integer}}  \\
 & {\delimit}  &{\nonterminal{Double}}  \\
 & {\delimit}  &{\nonterminal{String}}  \\
 & {\delimit}  &{\terminal{\{}} {\nonterminal{ListPattAss}} {\terminal{\}}}  \\
 & {\delimit}  &{\terminal{{$<$}}} {\nonterminal{ListPattTupleComp}} {\terminal{{$>$}}}  \\
 & {\delimit}  &{\terminal{(}} {\nonterminal{Patt}} {\terminal{)}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Patt1}} & {\arrow}  &{\nonterminal{Ident}} {\nonterminal{ListPatt}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{.}} {\nonterminal{Ident}} {\nonterminal{ListPatt}}  \\
 & {\delimit}  &{\nonterminal{Patt2}} {\terminal{*}}  \\
 & {\delimit}  &{\nonterminal{Ident}} {\terminal{@}} {\nonterminal{Patt2}}  \\
 & {\delimit}  &{\terminal{{$-$}}} {\nonterminal{Patt2}}  \\
 & {\delimit}  &{\nonterminal{Patt2}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Patt}} & {\arrow}  &{\nonterminal{Patt}} {\terminal{{$|$}}} {\nonterminal{Patt1}}  \\
 & {\delimit}  &{\nonterminal{Patt}} {\terminal{{$+$}}} {\nonterminal{Patt1}}  \\
 & {\delimit}  &{\nonterminal{Patt1}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{PattAss}} & {\arrow}  &{\nonterminal{ListIdent}} {\terminal{{$=$}}} {\nonterminal{Patt}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Label}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{\$}} {\nonterminal{Integer}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Sort}} & {\arrow}  &{\terminal{Type}}  \\
 & {\delimit}  &{\terminal{PType}}  \\
 & {\delimit}  &{\terminal{Str}}  \\
 & {\delimit}  &{\terminal{Strs}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListPattAss}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{PattAss}}  \\
 & {\delimit}  &{\nonterminal{PattAss}} {\terminal{;}} {\nonterminal{ListPattAss}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListPatt}} & {\arrow}  &{\nonterminal{Patt2}}  \\
 & {\delimit}  &{\nonterminal{Patt2}} {\nonterminal{ListPatt}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Bind}} & {\arrow}  &{\nonterminal{Ident}}  \\
 & {\delimit}  &{\terminal{\_}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListBind}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Bind}}  \\
 & {\delimit}  &{\nonterminal{Bind}} {\terminal{,}} {\nonterminal{ListBind}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Decl}} & {\arrow}  &{\terminal{(}} {\nonterminal{ListBind}} {\terminal{:}} {\nonterminal{Exp}} {\terminal{)}}  \\
 & {\delimit}  &{\nonterminal{Exp4}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{TupleComp}} & {\arrow}  &{\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{PattTupleComp}} & {\arrow}  &{\nonterminal{Patt}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListTupleComp}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{TupleComp}}  \\
 & {\delimit}  &{\nonterminal{TupleComp}} {\terminal{,}} {\nonterminal{ListTupleComp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListPattTupleComp}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{PattTupleComp}}  \\
 & {\delimit}  &{\nonterminal{PattTupleComp}} {\terminal{,}} {\nonterminal{ListPattTupleComp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Case}} & {\arrow}  &{\nonterminal{Patt}} {\terminal{{$=$}{$>$}}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListCase}} & {\arrow}  &{\nonterminal{Case}}  \\
 & {\delimit}  &{\nonterminal{Case}} {\terminal{;}} {\nonterminal{ListCase}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{Altern}} & {\arrow}  &{\nonterminal{Exp}} {\terminal{/}} {\nonterminal{Exp}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListAltern}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{Altern}}  \\
 & {\delimit}  &{\nonterminal{Altern}} {\terminal{;}} {\nonterminal{ListAltern}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{DDecl}} & {\arrow}  &{\terminal{(}} {\nonterminal{ListBind}} {\terminal{:}} {\nonterminal{Exp}} {\terminal{)}}  \\
 & {\delimit}  &{\nonterminal{Exp6}}  \\
\end{tabular}\\

\begin{tabular}{lll}
{\nonterminal{ListDDecl}} & {\arrow}  &{\emptyP} \\
 & {\delimit}  &{\nonterminal{DDecl}} {\nonterminal{ListDDecl}}  \\
\end{tabular}\\


