\(
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% inline MATH in running text:
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% \KEY{TEXT}, \STRING{TEXT}, \ATOM{TEXT}, \LEX{TEXT} can be used in math mode:
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% \NAME{name} highlights the name;
% \NAMEDECL{name} declares Name.name as the target of links to name;
% \NAMEREF{name} links name to the target Name.name in the current file;
% \NAMEHYPER{url}{file}{name} links name to Name.name at url/file/file.pdf.
% Similarly for \VAR{partvariable}, \SYN{syntaxname}, \SEM{semanticsName},
% and \SECT{sectionnumber}
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% \RULE{& PREMISE \\ & ...}{& FORMULA ... \\ & ...} produces an inference rule
% with separately aligned premises and conclusion
% PREMISE
% ...
% -----------
% FORMULA ...
% ...
\newcommand{\RULE}[2]
{\frac{\begin{aligned}#1\end{aligned}}{\begin{aligned}#2\end{aligned}}}
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%
% FORMULA ...
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%
\)
Languages-beta : SL-2-Expressions.cbs | PLAIN | PDF
\[\KEY{Language} \quad \STRING{SL}\]
\(\SECT{2}\) Expressions
\[\begin{align*}
\KEY{Syntax} \quad
\VARDECL{Expr} : \SYNDECL{expr}
\ ::= \ & \
\SYNHYPER{../.}{SL-1-Lexemes}{int} \\
\ \mid \ & \ \SYNHYPER{../.}{SL-1-Lexemes}{string} \\
\ \mid \ & \ \LEX{true} \\
\ \mid \ & \ \LEX{false} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{+}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{/}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{*}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{-}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{=}{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{<}{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{<}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{!}{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{>}{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{>}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{\AMPERSAND}{\AMPERSAND}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{|}{|}} \ \SYNREF{expr} \\
\ \mid \ & \ \LEX{{!}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \ \LEX{{(}} \ \SYNREF{expr-list}\QUERY \ \LEX{{)}} \\
\ \mid \ & \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \\
\ \mid \ & \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \ \LEX{{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{.}} \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{.}} \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \ \LEX{{=}} \ \SYNREF{expr} \\
\ \mid \ & \ \SYNREF{expr} \ \LEX{{.}} \ \SYNHYPER{../.}{SL-1-Lexemes}{id} \ \LEX{{(}} \ \SYNREF{expr-list}\QUERY \ \LEX{{)}} \\
\ \mid \ & \ \LEX{{(}} \ \SYNREF{expr} \ \LEX{{)}}
\end{align*}\]
\[\begin{align*}
\KEY{Rule} \quad
& \LEFTPHRASE \
\LEX{{(}} \ \VARREF{Expr} \ \LEX{{)}} \
\RIGHTPHRASE : \SYNREF{expr} =
\LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE
\end{align*}\]
\[\begin{align*}
\KEY{Type} \quad
& \NAMEDECL{sl-values}
\leadsto \NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{booleans} \mid \NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{integers} \mid \NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Strings}{strings} \mid \NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Objects}{objects} \mid \NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Null}{null-type}
\end{align*}\]
\[\begin{align*}
\KEY{Semantics} \quad
& \SEMDECL{eval} \LEFTPHRASE \ \VARREF{Expr} : \SYNREF{expr} \ \RIGHTPHRASE
: \TO \NAMEREF{sl-values}
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARHYPER{../.}{SL-1-Lexemes}{Int} \
\RIGHTPHRASE =
\SEMHYPER{../.}{SL-1-Lexemes}{int-val} \LEFTPHRASE \
\VAR{Int} \
\RIGHTPHRASE
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARHYPER{../.}{SL-1-Lexemes}{String} \
\RIGHTPHRASE =
\SEMHYPER{../.}{SL-1-Lexemes}{string-val} \LEFTPHRASE \
\VAR{String} \
\RIGHTPHRASE
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{true} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{true}
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{false} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{false}
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{+}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../.}{SL-Funcons}{integer-add-else-string-append}
( \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{/}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{checked} \
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{integer-divide}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{*}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{integer-multiply}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{-}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{integer-subtract}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{=}{=}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values}{Value-Types}{is-equal}
( \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{<}{=}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{is-less-or-equal}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{<}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{is-less}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{!}{=}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{not} \
\NAMEHYPER{../../../../../Funcons-beta/Values}{Value-Types}{is-equal}
( \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{>}{=}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{is-greater-or-equal}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{>}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Integers}{is-greater}
( \NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{int} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{\AMPERSAND}{\AMPERSAND}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Flowing}{if-true-else}
( \NAMEHYPER{../.}{SL-Funcons}{bool} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{bool} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{false} )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{|}{|}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Flowing}{if-true-else}
( \NAMEHYPER{../.}{SL-Funcons}{bool} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{true},
\NAMEHYPER{../.}{SL-Funcons}{bool} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{{!}} \ \VARREF{Expr} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Booleans}{not}
( \NAMEHYPER{../.}{SL-Funcons}{bool} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{new} \ \LEX{{(}} \ \LEX{{)}} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Objects}{object}
( \NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Generating}{fresh-atom},
\STRING{Object},
\NAMEHYPER{../.}{SL-Funcons}{initialise-local-variables} )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{println} \ \LEX{{(}} \ \VARREF{Expr} \ \LEX{{)}} \
\RIGHTPHRASE =
\NAMEHYPER{../.}{SL-Funcons}{print-line} \
\NAMEHYPER{../.}{SL-Funcons}{sl-to-string} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{readln} \ \LEX{{(}} \ \LEX{{)}} \
\RIGHTPHRASE =
[ \NAMEHYPER{../.}{SL-Funcons}{read-line} ]
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{defineFunction} \ \LEX{{(}} \ \VARREF{Expr} \ \LEX{{)}} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{fail}
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{nanoTime} \ \LEX{{(}} \ \LEX{{)}} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{fail}
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\LEX{stacktrace} \ \LEX{{(}} \ \LEX{{)}} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{fail}
\\
\KEY{Otherwise} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARHYPER{../.}{SL-1-Lexemes}{Id} \ \LEX{{(}} \ \VARREF{ExprList}\QUERY \ \LEX{{)}} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Abstraction}{Functions}{apply}
( \NAMEHYPER{../.}{SL-Funcons}{fun} \
\NAMEHYPER{../.}{SL-Funcons}{global-bound} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE ,
\SEMREF{eval-list} \LEFTPHRASE \
\VAR{ExprList}\QUERY \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARHYPER{../.}{SL-1-Lexemes}{Id} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{else}
( \NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Storing}{assigned} \
\NAMEHYPER{../.}{SL-Funcons}{local-variable} \
\SEMHYPER{../.}{SL-1-Lexemes}{id} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE ,
\NAMEHYPER{../.}{SL-Funcons}{str} \
\SEMHYPER{../.}{SL-1-Lexemes}{id} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARHYPER{../.}{SL-1-Lexemes}{Id} \ \LEX{{=}} \ \VARREF{Expr} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{give}
( \\&\quad\quad \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE , \\&\quad\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Flowing}{sequential}
( \\&\quad\quad\quad \NAMEHYPER{../.}{SL-Funcons}{local-variable-assign}
( \SEMHYPER{../.}{SL-1-Lexemes}{id} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{given} ), \\&\quad\quad\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{given} ) )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr} \ \LEX{{.}} \ \VARHYPER{../.}{SL-1-Lexemes}{Id} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../.}{SL-Funcons}{scope-closed}
( \\&\quad\quad \NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Objects}{object-feature-map} \
\NAMEHYPER{../.}{SL-Funcons}{obj} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE , \\&\quad\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Abnormal}{Failing}{else}
( \NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Storing}{assigned} \
\NAMEHYPER{../.}{SL-Funcons}{local-variable} \
\SEMHYPER{../.}{SL-1-Lexemes}{id} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Values/Primitive}{Null}{null-value} ) )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr}\SUB{1} \ \LEX{{.}} \ \VARHYPER{../.}{SL-1-Lexemes}{Id} \ \LEX{{=}} \ \VARREF{Expr}\SUB{2} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{give}
( \\&\quad\quad \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{2} \
\RIGHTPHRASE , \\&\quad\quad
\NAMEHYPER{../.}{SL-Funcons}{scope-closed}
( \\&\quad\quad\quad \NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Objects}{object-feature-map} \
\NAMEHYPER{../.}{SL-Funcons}{obj} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr}\SUB{1} \
\RIGHTPHRASE , \\&\quad\quad\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Flowing}{sequential}
( \\&\quad\quad\quad\quad \NAMEHYPER{../.}{SL-Funcons}{local-variable-assign}
( \SEMHYPER{../.}{SL-1-Lexemes}{id} \LEFTPHRASE \
\VAR{Id} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{given} ), \\&\quad\quad\quad\quad
\NAMEHYPER{../../../../../Funcons-beta/Computations/Normal}{Giving}{given} ) ) )
\\
\KEY{Rule} \quad
& \SEMREF{eval} \LEFTPHRASE \
\VARREF{Expr} \ \LEX{{.}} \ \VARHYPER{../.}{SL-1-Lexemes}{Id} \ \LEX{{(}} \ \VARREF{ExprList}\QUERY \ \LEX{{)}} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Abstraction}{Functions}{apply}
( \NAMEHYPER{../.}{SL-Funcons}{fun} \
\NAMEHYPER{../.}{SL-Funcons}{global-bound} \
\SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \ \LEX{{.}} \ \VAR{Id} \
\RIGHTPHRASE ,
\SEMREF{eval-list} \LEFTPHRASE \
\VAR{ExprList}\QUERY \
\RIGHTPHRASE )
\end{align*}\]
\[\begin{align*}
\KEY{Syntax} \quad
\VARDECL{ExprList} : \SYNDECL{expr-list}
\ ::= \ & \
\SYNREF{expr} \ \LEFTGROUP \LEX{{,}} \ \SYNREF{expr-list} \RIGHTGROUP\QUERY
\end{align*}\]
\[\begin{align*}
\KEY{Semantics} \quad
& \SEMDECL{eval-list} \LEFTPHRASE \ \_ : \SYNREF{expr-list}\QUERY \ \RIGHTPHRASE
: \TO \NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Lists}{lists}
( \NAMEREF{sl-values} )
\\
\KEY{Rule} \quad
& \SEMREF{eval-list} \LEFTPHRASE \
\
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Lists}{nil}
\\
\KEY{Rule} \quad
& \SEMREF{eval-list} \LEFTPHRASE \
\VARREF{Expr} \
\RIGHTPHRASE =
\NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Lists}{cons}
( \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE ,
\NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Lists}{nil} )
\\
\KEY{Rule} \quad
& \SEMREF{eval-list} \LEFTPHRASE \
\VARREF{Expr} \ \LEX{{,}} \ \VARREF{ExprList} \
\RIGHTPHRASE = \\&\quad
\NAMEHYPER{../../../../../Funcons-beta/Values/Composite}{Lists}{cons}
( \SEMREF{eval} \LEFTPHRASE \
\VAR{Expr} \
\RIGHTPHRASE ,
\SEMREF{eval-list} \LEFTPHRASE \
\VAR{ExprList} \
\RIGHTPHRASE )
\end{align*}\]
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