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\documentclass{beamer}
\title{Cloogle}
\subtitle{A programming language search engine and its applications}
\author{Camil Staps}
\date{January 5\textsuperscript{th}, 2018}
\usetheme{Szeged}
\usecolortheme{cloogle}
\usepackage[british]{babel}
\usepackage{csquotes}
\usepackage{tikz}
\usetikzlibrary{calc,positioning}
\newcommand{\module}[2]{#2\\[-4pt]\color{gray}{\tiny(#1)}}
\tikzstyle{block}=[rectangle,align=center]
\tikzset{
doc/.pic={
\coordinate (-east) at (0.309,0);
\coordinate (-south) at (0,-0.4);
\draw[pic actions] (-0.309,-0.4) -- ++(0,0.8) -- ++(0.518,0) -- ++(0,-0.1) -- ++(0.1,0) -- ++(0,-0.7) -- cycle;
\draw[pic actions] (0.209,0.4) -- ++(0.1,-0.1);
\draw[pic actions] (-0.209,-0.1) -- ++(0.418,0);
\draw[pic actions] (-0.209, 0) -- ++(0.418,0);
\draw[pic actions] (-0.209, 0.1) -- ++(0.418,0);
},
db/.pic={
% https://tex.stackexchange.com/a/397862/23992
\coordinate (-west) at (-0.3,0);
\coordinate (-east) at ( 0.3,0);
\coordinate (-south) at (0,-0.42);
\foreach \y in {-0.33,-0.1,0.13} {
\draw[fill=white] (-0.3,\y) to [looseness=0.5,bend right=90] ++(0.6,0)
-- ++(0,0.2) to [looseness=0.5,bend left=90] ++(-0.6,0)
-- ++(0,-0.2);
\draw (-0.3,\y+0.2) edge[looseness=0.5,bend left=90] ++(0.6,0);
}
}
}
\usepackage{minted}
\setminted{fontsize=\small}
\begin{document}
\maketitle
\section{Background}
\begin{frame}[fragile]{Background}
What is wrong with this code?
\begin{minted}[gobble=2]{clean}
incAll :: [Int] -> [Int]
incAll [] = []
incAll [x:xs] = [x+1:incAll xs]
sortByKey :: [(a,b)] -> [(a,b)] | < a
sortByKey [] = []
sortByKey [(k,v):xs] = sortByKey ls ++ [(k,v):sortByKey hs]
where (ls,hs) = partition (\(k`,_) -> k > k`) xs
\end{minted}
\pause
Better:
\begin{minted}[gobble=2]{clean}
incAll :== map ((+) 1)
sortByKey :== sortBy (on (<) fst)
\end{minted}
\end{frame}
\begin{frame}{Background}
Lack of abstraction due to...
\begin{itemize}
\item Poor conceptualisation of the programmer?
\item Poor knowledge of the standard libraries?
\begin{itemize}
\item \enquote{There is this function \texttt{map}, but where is it defined?}
\end{itemize}
\end{itemize}
Solution: build a search engine!
\end{frame}
\begin{frame}{History}
\begin{itemize}
\item February 2016: PHP regex search
\pause
\item April: function type search; moved to Clean
\pause
\item June: type definition search; included classes and generics
\pause
\item August: included macros
\pause
\item October: moved to Docker containers; caching
\pause
\item November: unify with type synonyms
\end{itemize}
\end{frame}
\begin{frame}{Architecture}
\centering
\footnotesize
\def\tikzsource{%
\pic (src) at (-5,3) {doc};
}
\def\tikzbuilddb{%
\node (cocl) at (-2.5, 3.5 ) {\module{Clean}{Clean compiler}};
\node (ppr) at (-2.5, 2.5 ) {\module{Clean}{Pretty printer}};
\pic (db) at ( 0, 2.98) {db};
\node[right=5pt of db-east,draw=none] {\module{\tiny JSON}{\scriptsize Database}};
\draw[->] ($(src-east)+(0,0.18)$) -- (cocl.west);
\draw[->] ($(src-east)-(0,0.18)$) -- (ppr.west);
\draw[->] (cocl.east) -- ($(db-west)+(0,0.18)$);
\draw[->] (ppr.east) -- ($(db-west)-(0,0.18)$);
}
\def\tikzbackend{%
\node (web) at (0, 1) {\module{Clean, PHP, JS}{\textbf{cloogle.org}}};
\node (uni) at (2, 2) {\module{Clean}{Type unifier}};
\draw (uni) -- (web);
\draw[->] (db-south) -- (web);
}
\def\tikzfrontend{%
\node (hljs) at (-2, 0.5) {\module{JS}{clean.js}};
\draw (hljs) -- (web);
}
\def\tikzfrontendsrc{%
\node (pygm) at (-2.25, 1.5) {\module{Python}{pygments}};
\draw[->] (src-south) -- (pygm);
\draw (pygm) -- (web);
}
\def\tikzstats{%
\node (stats) at (3, 1) {\module{Bash, JS, PHP, SQL}{Log \& Statistics}};
\draw (web) -- (stats);
}
\def\tikzclientA{%
\node (cli) at (-2,-2) {\module{Python}{CLI app}};
\draw[->] (web) -- (cli);
}
\def\tikzclientB{%
\node (tgm) at (0,-2) {\module{Python}{Telegram bot}}; % TODO more frontends?
\draw[->] (web) -- (tgm);
}
\def\tikzclientC{%
\node (vim) at (2,-2) {\module{Vim}{vim-clean}};
\draw[->] (web) -- (vim);
}
\begin{tikzpicture}[every node/.style={draw,block}]
\useasboundingbox (-5,-4) rectangle (5,4);
\only<1->\tikzsource
\only<1-4>{\node[below=5pt of src-south,draw=none] {\scriptsize Source code};}
\only<2->{\tikzbuilddb}
\only<3->{\tikzbackend}
\only<4->{\tikzfrontend}
\only<5->{\tikzfrontendsrc}
\only<6->{\tikzstats}
\only<7->{\tikzclientA}
\only<8->{\tikzclientB}
\only<9->{\tikzclientC}
\end{tikzpicture}
\end{frame}
\end{document}
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