
diff -r 0d3bc1d0d987 -r 9fa90c73c6f3 slides/slides07.tex
--- a/slides/slides07.tex	Tue Nov 17 00:36:16 2020 +0000
+++ b/slides/slides07.tex	Wed Nov 18 01:54:03 2020 +0000
@@ -50,44 +50,42 @@
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%     
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
+\begin{frame}[t]
 \frametitle{Bird's Eye View}
+\mbox{}\\[-16mm]\mbox{}
 
 \begin{center}
-\begin{tikzpicture}
-\node (rexp)  {\bl{\bf Lexer}};
-\node (nfa) [right=of rexp] {\bl{\bf Parser}};
-\node (dfa) [right=of nfa] 
- {\bl{\begin{tabular}{c}\bf Machine Code/\\\bf Java Byte Code\end{tabular}}};
-\path[->, red, line width=2mm] (rexp) edge node [above=4mm, black] {\begin{tabular}{c@{\hspace{9mm}}}token\\[-1mm]
-sequence\end{tabular}} (nfa);
-\path[->, red, line width=2mm] (nfa) edge node [above=4mm, black] {\begin{tabular}{c}parse\\[-1mm] tree\end{tabular}}(dfa);
-\end{tikzpicture}\\
-\end{center}
+  \begin{tikzpicture}[scale=1,
+                      node/.style={
+                      rectangle,rounded corners=3mm,
+                      very thick,draw=black!50,
+                      minimum height=18mm, minimum width=20mm,
+                      top color=white,bottom color=black!20,drop shadow}]
+  \node (0) at (-2.3,0) {}; 
+  
+  \node (A) at (0,0)  [node] {};
+  \node [below right] at (A.north west) {lexer};
+
+  \node (B) at (3,0)  [node] {};
+  \node [below right=1mm] at (B.north west) 
+    {\mbox{}\hspace{-1mm}parser};
 
+  \node (C) at (6,0)  [node] {};
+  \node [below right] at (C.north west) 
+    {\mbox{}\hspace{-1mm}code gen};
+
+  \node (1) at (8.4,0) {}; 
+
+  \draw [->,line width=4mm] (0) -- (A); 
+  \draw [->,line width=4mm] (A) -- (B); 
+  \draw [->,line width=4mm] (B) -- (C); 
+  \draw [->,line width=4mm] (C) -- (1); 
+  \end{tikzpicture}
+  \end{center}
+  
 \end{frame}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
- 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-\begin{frame}[c]
-\frametitle{CW3}
 
-Atomic parsers for tokens
-
-\begin{center}
-\bl{$\texttt{T\_Num(123)}::rest \;\Rightarrow\; \{(\texttt{T\_Num(123)}, rest)\}$} 
-\end{center}\bigskip
-
-\begin{itemize}
-\item you consume one or more token from the\\ 
-  input (stream)
-\item \bl{\texttt{T\_NUM(1), T\_OP(+), T\_NUM(2)}}\bigskip
-\item a good starting point would be \texttt{comb2.scala} 
-\item in case CW2 did not work, use \texttt{toks.scala} as 
-  input to the parser
-\end{itemize}
-\end{frame}
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -107,7 +105,7 @@
 
 \fontsize{8}{10}\selectfont
 %\footnotesize
-\mbox{}\\[-8mm]\mbox{}
+\mbox{}\\[-13mm]\mbox{}
 
 \begin{columns}
 \begin{column}{2cm} 




