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@@ -10062,12 +10062,12 @@ variable shadowing and our logic for \code{let} can remain simple, as
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in the exerpt above.
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The second step is to mark the occurences of the mutable variables
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-with the new \code{GetBang} AST node. The following is an exerpt of
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-the \code{uncover-get!-exp} function, which takes two parameters: the
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-set of mutable varaibles \code{set!-vars}, and the expression \code{e}
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-to be processed. The case for \code{(Var x)} replaces it with
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-\code{(GetBang x)} if it is a mutable variable or leaves it alone if
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-not.
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+with the new \code{GetBang} AST node (\code{get!} in concrete
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+syntax). The following is an exerpt of the \code{uncover-get!-exp}
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+function, which takes two parameters: the set of mutable varaibles
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+\code{set!-vars}, and the expression \code{e} to be processed. The
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+case for \code{(Var x)} replaces it with \code{(GetBang x)} if it is a
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+mutable variable or leaves it alone if not.
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\begin{center}
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\begin{minipage}{\textwidth}
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\begin{lstlisting}
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@@ -10095,9 +10095,9 @@ their occurences with \code{GetBang}.
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{\if\edition\racketEd
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%
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-The three new language forms, \code{while}, \code{set!}, and
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-\code{begin} are all complex expressions and their subexpressions are
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-allowed to be complex.
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+The new language forms, \code{get!}, \code{set!}, \code{begin}, and
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+\code{while} are all complex expressions. The subexpressions of
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+\code{set!}, \code{begin}, and \code{while} are allowed to be complex.
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%
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\fi}
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{\if\edition\pythonEd
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@@ -10123,8 +10123,10 @@ Figure~\ref{fig:Rwhile-anf-syntax} defines the output language
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\Atm &::=& \gray{ \INT{\Int} \MID \VAR{\Var} \MID \BOOL{\itm{bool}}
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\MID \VOID{} } \\
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\Exp &::=& \ldots \MID \gray{ \LET{\Var}{\Exp}{\Exp} } \\
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- &\MID& \WHILE{\Exp}{\Exp} \MID \SETBANG{\Var}{\Exp}
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- \MID \BEGIN{\LP\Exp\ldots\RP}{\Exp} \\
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+ &\MID& \GETBANG{\Var}
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+ \MID \SETBANG{\Var}{\Exp} \\
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+ &\MID& \BEGIN{\LP\Exp\ldots\RP}{\Exp}
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+ \MID \WHILE{\Exp}{\Exp} \\
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\Def &::=& \gray{ \FUNDEF{\Var}{([\Var \code{:} \Type]\ldots)}{\Type}{\code{'()}}{\Exp} }\\
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\LangLoopANF &::=& \gray{ \PROGRAMDEFS{\code{'()}}{\Def} }
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\end{array}
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@@ -10163,7 +10165,8 @@ expressions have been bound to temporary variables. Recall that
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\code{let} expressions in \LangLoopANF{} are allowed to have
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arbitrary expressions in their right-hand-side expression, so it is
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fine to place \code{begin} there.
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-
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+\begin{center}
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+\begin{minipage}{\textwidth}
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\begin{lstlisting}
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(let ([x0 10])
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(let ([y1 0])
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@@ -10178,6 +10181,8 @@ fine to place \code{begin} there.
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(let ([tmp4 (+ tmp2 tmp3)])
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(+ tmp4 x0))))))
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\end{lstlisting}
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+\end{minipage}
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+\end{center}
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\fi}
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Jeremy Siek