# HG changeset patch
# User Christian Urban <christian dot urban at kcl dot ac dot uk>
# Date 1354091306 0
# Node ID 719fd738d2a089058dbcab9c1a199227812ee464
# Parent  bd61b03b9eaa85dde27b4d3185eea15995b8efbe
tuned

diff -r bd61b03b9eaa -r 719fd738d2a0 fib.while
--- a/fib.while	Wed Nov 28 07:03:29 2012 +0000
+++ b/fib.while	Wed Nov 28 08:28:26 2012 +0000
@@ -1,17 +1,15 @@
 /* Fibonacci Program
    input: n
-   output: fib_res */
+*/
 
 n := 19;
 minus1 := 0;
 minus2 := 1;
-temp := 0;
 while n > 0 do {
        temp := minus2;
        minus2 := minus1 + minus2;
        minus1 := temp;
        n := n - 1
 };
-fib_res := minus2;
-write fib_res 
+write minus2 
 
diff -r bd61b03b9eaa -r 719fd738d2a0 slides09.pdf
Binary file slides09.pdf has changed
diff -r bd61b03b9eaa -r 719fd738d2a0 slides09.tex
--- a/slides09.tex	Wed Nov 28 07:03:29 2012 +0000
+++ b/slides09.tex	Wed Nov 28 08:28:26 2012 +0000
@@ -75,8 +75,8 @@
 	showstringspaces=false}
 
 \lstdefinelanguage{while}{
-  morekeywords={if,then,else,while,do,true,false},
-  otherkeywords={=,!=,:=,<,>},
+  morekeywords={if,then,else,while,do,true,false,write},
+  otherkeywords={=,!=,:=,<,>,;},
   sensitive=true,
   morecomment=[n]{/*}{*/},
 }
@@ -317,8 +317,8 @@
 \item is a stack-based VM (like Postscript, CLR of .Net)
 \item contains a JIT compiler
 \item many languages take advantage of JVM's infrastructure (JRE)
-\item languages compiled to the JVM: Scala, Clojure\ldots
 \item is garbage collected $\Rightarrow$ no buffer overflows
+\item some languages compiled to the JVM: Scala, Clojure\ldots
 \end{itemize}
 
 \end{frame}}
@@ -436,12 +436,12 @@
 {\Large\bl{$x := 5 + y * 2$}}\bigskip\pause   
 
 \begin{itemize}
-\item lookup: \bl{$\text{iload}\; number$}
-\item store: \bl{$\text{istore}\; number$}
+\item lookup: \bl{$\text{iload}\; index$}
+\item store: \bl{$\text{istore}\; index$}
 \end{itemize}\bigskip\pause
 
-during compilation we have to maintain a map between our identifiers and the
-Java bytecode numbers
+while compilating we have to maintain a map between our identifiers and the
+Java bytecode indices
 
 \begin{center}
 \bl{$\text{compile}(a, E)$}
@@ -480,7 +480,7 @@
 
 \begin{center}
 \bl{\begin{tabular}{@{}l@{\hspace{1mm}}c@{\hspace{1mm}}l@{}}
-$\text{compile}(\text{skip}, E)$ & $\dn$ & $(Nil, E)$\bigskip\\
+$\text{compile}(\text{skip}, E)$ & $\dn$ & $(N\!il, E)$\bigskip\\
 $\text{compile}(x := a, E)$ & $\dn$\\
 \multicolumn{3}{l}{$(\text{compile}(a, E) \;@\;\text{istore}\;index, E(x\mapsto index))$}\\
 \end{tabular}}
@@ -507,7 +507,7 @@
 \end{tabular}}
 \end{center}
 
-where \bl{$n_x$} is the number corresponding to the variable \bl{$x$}
+where \bl{$n_x$} is the index corresponding to the variable \bl{$x$}
 
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
@@ -519,7 +519,7 @@
 
 {\Large\bl{$\text{if}\;b\;\text{else}\;cs_1\;\text{then}\;cs_2$}}\bigskip\bigskip
 
-\onslide<2->{Case }\only<2>{True:}\only<3>{False:}
+\onslide<2->{Case }\only<2>{{\bf True}:}\only<3>{{\bf False}:}
 
 \begin{center}
 \begin{tikzpicture}[node distance=2mm and 4mm,
@@ -597,7 +597,7 @@
 \begin{center}
 \bl{\begin{tabular}{lcl}
 $\text{compile}(a_1 = a_2, E, lab)$ & $\dn$\\ 
-\multicolumn{3}{l}{$\quad\text{compile}(a_1, E) \;@\;\text{compile}(a_2. E)\;@\; \text{if\_icmpne}\;lab$}
+\multicolumn{3}{l}{$\quad\text{compile}(a_1, E) \;@\;\text{compile}(a_2, E)\;@\; \text{if\_icmpne}\;lab$}
 \end{tabular}}
 \end{center}
 
@@ -637,7 +637,7 @@
 
 {\Large\bl{$\text{while}\;b\;\text{do}\;cs$}}\bigskip\bigskip
 
-\onslide<2->{Case }\only<2>{True:}\only<3>{False:}
+\onslide<2->{Case }\only<2>{{\bf True}:}\only<3>{{\bf False}:}
 
 \begin{center}
 \begin{tikzpicture}[node distance=2mm and 4mm,
@@ -686,7 +686,7 @@
 \multicolumn{3}{l}{$\quad\phantom{(}@\;\text{compile}(b, E, l_{wend})$}\\
 \multicolumn{3}{l}{$\quad\phantom{(}@\;is$}\\
 \multicolumn{3}{l}{$\quad\phantom{(}@\; \text{goto}\;l_{wbegin}$}\\
-\multicolumn{3}{l}{$\quad\phantom{(}@\;l_{wend}:, E'')$}\\
+\multicolumn{3}{l}{$\quad\phantom{(}@\;l_{wend}:, E')$}\\
 \end{tabular}}
 \end{center}
 
@@ -702,7 +702,7 @@
 
 \begin{center}
 \small\bl{\begin{tabular}{l}
-.method public static write(I)V\\ 
+.method public static write(I)V\hspace{1cm}\textcolor{black}{(library function)}\\ 
 \;\;    .limit locals 5 \\
 \;\;    .limit stack 5 \\
 \;\;    iload 0 \\