# HG changeset patch
# User Christian Urban <christian dot urban at kcl dot ac dot uk>
# Date 1382483381 -3600
# Node ID 36eb7bfb0e63ca969051377a4a49316a2136831e
# Parent  4725bba8ef261b84759d68ebcd2ff149de431547
added

diff -r 4725bba8ef26 -r 36eb7bfb0e63 progs/loops.while
--- a/progs/loops.while	Tue Oct 22 23:17:53 2013 +0100
+++ b/progs/loops.while	Wed Oct 23 00:09:41 2013 +0100
@@ -4,15 +4,11 @@
 z := start;
 while 0 < x do {
  while 0 < y do {
-  while 0 < z do {
-    z := z - 1
-  };
+  while 0 < z do { z := z - 1 };
   z := start;
   y := y - 1
  };     
  y := start;
  x := x - 1
 };
-write x;
-write y;
-write z
+
diff -r 4725bba8ef26 -r 36eb7bfb0e63 slides/compiled2.data
--- a/slides/compiled2.data	Tue Oct 22 23:17:53 2013 +0100
+++ b/slides/compiled2.data	Wed Oct 23 00:09:41 2013 +0100
@@ -1,6 +1,6 @@
 %% LaTeX2e file `compiled2.data'
 %% generated by the `filecontents' environment
-%% from source `slides09' on 2012/11/28.
+%% from source `slides05' on 2013/10/22.
 %%
 200 0.222058
 400 0.215204
diff -r 4725bba8ef26 -r 36eb7bfb0e63 slides/interpreted2.data
--- a/slides/interpreted2.data	Tue Oct 22 23:17:53 2013 +0100
+++ b/slides/interpreted2.data	Wed Oct 23 00:09:41 2013 +0100
@@ -1,6 +1,6 @@
 %% LaTeX2e file `interpreted2.data'
 %% generated by the `filecontents' environment
-%% from source `slides09' on 2012/11/28.
+%% from source `slides05' on 2013/10/22.
 %%
 %1 0.00503
 200 1.005863
diff -r 4725bba8ef26 -r 36eb7bfb0e63 slides/slides05.pdf
Binary file slides/slides05.pdf has changed
diff -r 4725bba8ef26 -r 36eb7bfb0e63 slides/slides05.tex
--- a/slides/slides05.tex	Tue Oct 22 23:17:53 2013 +0100
+++ b/slides/slides05.tex	Wed Oct 23 00:09:41 2013 +0100
@@ -19,6 +19,7 @@
 \usetikzlibrary{positioning}
 \usetikzlibrary{calc}
 \usepackage{graphicx} 
+\usepackage{pgfplots}
 
 \definecolor{javared}{rgb}{0.6,0,0} % for strings
 \definecolor{javagreen}{rgb}{0.25,0.5,0.35} % comments
@@ -75,6 +76,26 @@
 	showspaces=false,
 	showstringspaces=false}
 	
+\begin{filecontents}{interpreted2.data}
+%1 0.00503
+200 1.005863
+400 7.8296765
+600 27.2321885
+800 65.249271
+1000 135.4493445
+1200 232.134097
+1400 382.527227
+\end{filecontents}
+
+\begin{filecontents}{compiled2.data}
+200 0.222058
+400 0.215204
+600 0.202031
+800 0.21986
+1000 0.205934
+1200 0.1981615
+1400 0.207116
+\end{filecontents}
 
 % beamer stuff 
 \renewcommand{\slidecaption}{AFL 05, King's College London, 23.~October 2013}
@@ -336,6 +357,131 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+
+\texttt{\consolas\lstinputlisting{../progs/loops.while}}
+
+\begin{textblock}{6}(10,2)
+\begin{tikzpicture}[scale=0.46]
+\begin{axis}[axis x line=bottom, axis y line=left, ylabel=secs,
+    xlabel=n,
+    enlargelimits=0.05,
+    ybar interval=0.7, legend style=small]
+\addplot file {interpreted2.data};
+\addplot file {compiled2.data};
+%\legend{interpreted, compiled}
+\end{axis}
+\end{tikzpicture}
+\end{textblock}
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\mode<presentation>{
+\begin{frame}[t]
+
+\consolas
+\begin{center}
+"if true then then 42 else +"
+\end{center}
+
+
+\begin{tabular}{@{}l}
+KEYWORD: \\
+\hspace{5mm}{if}, {then}, {else},\\ 
+WHITESPACE:\\
+\hspace{5mm}{" "}, {$\backslash$n},\\ 
+IDENT:\\
+\hspace{5mm}LETTER $\cdot$ (LETTER + DIGIT + {\_})$^*$\\ 
+NUM:\\
+\hspace{5mm}(NONZERODIGIT $\cdot$ DIGIT$^*$) + {0}\\
+OP:\\
+\hspace{5mm}{+}\\
+COMMENT:\\
+\hspace{5mm}{$\slash$*} $\cdot$ (ALL$^*$ $\cdot$ {*$\slash$} $\cdot$ ALL$^*$) $\cdot$ {*$\slash$}
+\end{tabular}
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[t]
+
+\consolas
+\begin{center}
+"if true then then 42 else +"
+\end{center}
+
+\only<1>{
+\small\begin{tabular}{l}
+KEYWORD(if),\\ 
+WHITESPACE,\\ 
+IDENT(true),\\ 
+WHITESPACE,\\ 
+KEYWORD(then),\\ 
+WHITESPACE,\\ 
+KEYWORD(then),\\ 
+WHITESPACE,\\ 
+NUM(42),\\ 
+WHITESPACE,\\ 
+KEYWORD(else),\\ 
+WHITESPACE,\\ 
+OP(+)
+\end{tabular}}
+
+\only<2>{
+\small\begin{tabular}{l}
+KEYWORD(if),\\ 
+IDENT(true),\\ 
+KEYWORD(then),\\ 
+KEYWORD(then),\\ 
+NUM(42),\\ 
+KEYWORD(else),\\ 
+OP(+)
+\end{tabular}}
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
+
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{c}Two Rules\end{tabular}}
+
+\begin{itemize}
+\item Longest match rule (``maximal munch rule''): The 
+longest initial substring matched by any regular expression is taken
+as next token.\bigskip
+
+\item Rule priority:
+For a particular longest initial substring, the first regular
+expression that can match determines the token.
+
+\end{itemize}
+
+%\url{http://www.technologyreview.com/tr10/?year=2011}
+  
+%finite deterministic automata/ nondeterministic automaton
+
+%\item problem with infix operations, for example i-12
+
+
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
 
 
 \newcommand{\qq}{\mbox{\texttt{"}}}