-\documentclass[a4paper,draft]{article}
+\documentclass[a4paper]{article}
\usepackage{a4wide}
\usepackage{pifont}
\newcommand{\MATITA}{\ding{46}\textsf{\textbf{Matita}}}
\title{Continuationals semantics for \MATITA}
-\author{Enrico Tassi \qquad Stefano Zacchiroli \\
+\author{Claudio Sacerdoti Coen \quad Enrico Tassi \quad Stefano Zacchiroli \\
\small Department of Computer Science, University of Bologna \\
\small Mura Anteo Zamboni, 7 -- 40127 Bologna, ITALY \\
-\small \{\texttt{tassi}, \texttt{zacchiro}\}\texttt{@cs.unibo.it}}
+\small \{\texttt{sacerdot}, \texttt{tassi}, \texttt{zacchiro}\}\texttt{@cs.unibo.it}}
+
+\newcommand{\MATHIT}[1]{\ensuremath{\mathit{#1}}}
+\newcommand{\MATHTT}[1]{\ensuremath{\mathtt{#1}}}
+
+\newcommand{\DOT}{\ensuremath{\mbox{\textbf{.}}}}
+\newcommand{\SEMICOLON}{\ensuremath{\mbox{\textbf{;}}}}
+\newcommand{\BRANCH}{\ensuremath{\mbox{\textbf{[}}}}
+\newcommand{\SHIFT}{\ensuremath{\mbox{\textbf{\textbar}}}}
+\newcommand{\POS}[1]{\ensuremath{#1\mbox{\textbf{:}}}}
+\newcommand{\MERGE}{\ensuremath{\mbox{\textbf{]}}}}
+\newcommand{\FOCUS}[1]{\ensuremath{\mathtt{focus}~#1}}
+\newcommand{\UNFOCUS}{\ensuremath{\mathtt{unfocus}}}
+\newcommand{\SKIP}{\MATHTT{skip}}
+\newcommand{\TACTIC}[1]{\ensuremath{\mathtt{tactic}~#1}}
-\newcommand{\DOT}{\mbox{\textbf{.}}}
-\newcommand{\SEMICOLON}{\mbox{\textbf{;}}}
-\newcommand{\BRANCH}{\mbox{\textbf{[}}}
-\newcommand{\SHIFT}{\mbox{\textbf{\textbar}}}
-\newcommand{\MERGE}{\mbox{\textbf{]}}}
\newcommand{\APPLY}[1]{\ensuremath{\mathtt{apply}~\mathit{#1}}}
-\newcommand{\SKIP}{\ensuremath{\mathtt{skip}}}
-\newcommand{\TACTICAL}[1]{\ensuremath{\mathtt{tactical}~\mathit{#1}}}
-\newcommand{\GOTO}[2]{\ensuremath{\mathtt{goal} ~ #1 ~ #2}}
-\newcommand{\GOAL}{\ensuremath{\mathit{goal}}}
-\newcommand{\GOALSWITCH}{\ensuremath{\mathit{goal\_switch}}}
-\newcommand{\LIST}{\ensuremath{\mathtt{list}}}
-\newcommand{\STACK}{\ensuremath{\mathtt{stack}}}
-\newcommand{\OPEN}[1]{\ensuremath{\mathtt{Open}~#1}}
-\newcommand{\CLOSED}[1]{\ensuremath{\mathtt{Closed}~#1}}
+\newcommand{\GOAL}{\MATHIT{goal}}
+\newcommand{\SWITCH}{\MATHIT{switch}}
+\newcommand{\LIST}{\MATHTT{list}}
+\newcommand{\INT}{\MATHTT{int}}
+\newcommand{\OPEN}{\MATHTT{Open}}
+\newcommand{\CLOSED}{\MATHTT{Closed}}
\newcommand{\SEMOP}[1]{|[#1|]}
\newcommand{\TSEMOP}[1]{{}_t|[#1|]}
-\newcommand{\SEM}[5]{\SEMOP{#1}_{#2,#3,#4,#5}}
+\newcommand{\SEM}[3][\xi]{\SEMOP{#2}_{{#1},{#3}}}
+\newcommand{\ENTRY}[4]{\langle#1,#2,#3,#4\rangle}
\newcommand{\TSEM}[3]{\TSEMOP{#1}_{#2,#3}}
-\newcommand{\FUN}[2]{\ensuremath{\mathit{#1}(#2)}}
-\newcommand{\FILTEROPEN}[1]{\FUN{filter\_open}{#1}}
-\newcommand{\MAPOPEN}[1]{\FUN{map\_open}{#1}}
-\newcommand{\DEEPCLOSE}[1]{\FUN{deep\_close}{#1}}
+\newcommand{\GIN}[1][1]{\ensuremath{[l_{#1};\cdots;l_n]}}
+
+\newcommand{\ZEROPOS}{\MATHIT{zero\_pos}}
+\newcommand{\INITPOS}{\MATHIT{init\_pos}}
+\newcommand{\ISFRESH}{\MATHIT{is\_fresh}}
+\newcommand{\FILTER}{\MATHIT{filter}}
+\newcommand{\FILTEROPEN}{\MATHIT{filter\_open}}
+\newcommand{\ISOPEN}{\MATHIT{is\_open}}
+\newcommand{\DEEPCLOSE}{\MATHIT{deep\_close}}
+\newcommand{\REMOVEGOALS}{\MATHIT{remove\_goals}}
+\newcommand{\GOALS}{\MATHIT{open\_goals}}
+
+\newcommand{\BRANCHTAG}{\ensuremath{\mathtt{B}}}
+\newcommand{\FOCUSTAG}{\ensuremath{\mathtt{F}}}
+
+\newlength{\sidecondlen}
+\setlength{\sidecondlen}{2cm}
\begin{document}
\maketitle
-\section{Foo}
-
-\subsection{Language}
-
-\[
-\begin{array}{rcll}
- C & ::= & & \mbox{(\textbf{continuationals})} \\
- & & \DOT & \mbox{(dot)} \\
- & | & C ~ \SEMICOLON ~ C & \mbox{(semicolon)} \\
- & | & \BRANCH & \mbox{(branch)} \\
- & | & \SHIFT & \mbox{(shift)} \\
- & | & \MERGE & \mbox{(merge)} \\
- & | & \GOTO{n}{C} & \mbox{(goto)} \\
- & | & \TACTICAL{T} & \mbox{(tactical)} \\[2ex]
-
- T & ::= & & \mbox{(\textbf{tacticals})} \\
- & & \APPLY{tac} & \mbox{(tactic application)} \\
- & | & \SKIP & \mbox{(closed goal skipping)} \\
-\end{array}
-\]
-
-\subsection{Status}
-
-\[
-\begin{array}{rcll}
- \mathit{status} & = & \xi\times\Gamma\times\tau\times\kappa & \\
- \xi & & & \mbox{(metasenv)} \\
- \Gamma & = & \GOALSWITCH~\LIST~\STACK & \mbox{(context)} \\
- \GOALSWITCH & = & \OPEN{n} \quad | \quad \CLOSED{n} & \\
- \tau & = & \GOAL~\LIST~\STACK & \mbox{(todo)} \\
- \kappa & = & \GOAL~\LIST~\STACK & \mbox{(dot continuations)} \\
-\end{array}
-\]
-
-\subsection{Semantics}
-
-\[
-\begin{array}{rcll}
- \SEMOP{\cdot} & : & C -> \mathit{status} -> \mathit{status} &
- \mbox{(continuationals semantics)} \\
- \TSEMOP{\cdot} & : & T -> \xi -> \GOALSWITCH ->
- \GOAL~\LIST \times \GOAL~\LIST & \mbox{(tacticals semantics)} \\
-\end{array}
-\]
-
-\[
-\begin{array}{rcl}
- \mathit{apply\_tac} & : & \mathit{tac} -> \xi -> \GOAL ->
- \GOAL~\LIST\times\GOAL~\LIST \\
- \mathit{map\_open} & : & \GOAL~\LIST -> \GOALSWITCH~\LIST \\
- \mathit{filter\_open} & : & \GOALSWITCH~\LIST -> \GOAL~\LIST \\
- \mathit{deep\_close} & :
- & \GOAL~\LIST -> \GOALSWITCH~\LIST~\STACK -> \GOALSWITCH~\LIST~\STACK \\
- \cup & : & \alpha~\LIST -> \alpha~\LIST -> \alpha~\LIST\\
- \setminus & : & \alpha~\LIST -> \alpha~\LIST -> \alpha~\LIST\\
-\end{array}
-\]
-
-\[
-\begin{array}{rlcc}
- \TSEM{\APPLY{tac}}{\xi}{\OPEN{n}} & =
- & \mathit{apply\_tac}(\mathit{tac},\xi,n) & \\
- \TSEM{\SKIP}{\xi}{\CLOSED{n}} & = & \langle [], [n]\rangle & \\
-\end{array}
-\]
-
-\[
-\begin{array}{rcl}
- \SEM{\TACTICAL{T}}{\xi}{[g_1;\dots;g_n]::\Gamma}{\tau}{\kappa}
- & =
- & \langle\xi_n,\MAPOPEN{G^O_n}::\DEEPCLOSE{G^C_n,\Gamma},\tau,\kappa\rangle
- \\[1ex]
-
- \multicolumn{3}{l}{\hspace{2em}\mathit{where} ~
- \left\{
- \begin{array}{rcll}
- \langle\xi_0, G^O_0, G^C_0\rangle & = & \langle\xi, [], []\rangle \\
- \langle\xi_{i+1}, G^O_{i+1}, G^C_{i+1}\rangle
- & =
- & \langle\xi_i, G^O_i, G^C_i\rangle
- & g_{i+1}\in G^C_i \\
- \langle\xi_{i+1}, G^O_{i+1}, G^C_{i+1}\rangle
- & =
- & \langle\xi, (G^O_i\setminus G^C)\cup G^O, G^C_i\cup G^C\rangle
- & g_{i+1}\not\in G^C_i \\
- & & \mathit{where} ~ \langle\xi,G^O,G^C\rangle=\TSEM{T}{\xi_i}{g_{i+1}}
- \\
- \end{array}
- \right.
- }
- \\[2ex]
-
- \SEM{C_1 ~ \SEMICOLON ~ C_2}{\xi}{\Gamma}{\tau}{\kappa}
- & =
- & \SEM{C_2}{\xi'}{\Gamma'}{\tau'}{\kappa'}
- \\[1ex]
-
- & & \mathit{where} ~
- \langle\xi',\Gamma',\tau',\kappa',\rangle =
- \SEM{C_1}{\xi}{\Gamma}{\tau}{\kappa}
- \\[2ex]
-
- \SEM{~\DOT~}{\xi}{(g::G)::\Gamma}{\tau}{K::\kappa}
- & =
- & \langle\xi, [g]::\Gamma, \tau,
- (\FILTEROPEN{G}\cup K)::\kappa\rangle
- \\[2ex]
-
- \SEM{~\DOT~}{\xi}{[]::\Gamma}{\tau}{(n::N)::\kappa}
- & =
- & \langle\xi, [\OPEN{n}]::\Gamma, \tau, N::\kappa\rangle
- \\[2ex]
-
- \SEM{~\BRANCH~}{\xi}{[g_1;\dots;g_n]::\Gamma}{\tau}{\kappa}
- & =
- & \langle\xi, [g_1]::[g_2;\dots;g_n]::\Gamma, []::\tau, []::\kappa\rangle
- \\[2ex]
-
- \SEM{~\SHIFT~}{\xi}{G::[g_i;\dots;g_n]::\Gamma}{T::\tau}{K::\kappa}
- & =
- & \langle\xi,
- [g_i]::[g_{i+1};\dots;g_n]::\Gamma,
- (T\cup\FILTEROPEN{G}\cup K)::\tau,
- []::\kappa\rangle
- \\[2ex]
-
- \SEM{~\MERGE~}{\xi}{G::[g_i;\dots;g_n]::\Gamma}{T::\tau}{K::\kappa}
- & =
- & \langle\xi,
- (T\cup G\cup[g_i;\dots;g_n]\cup\MAPOPEN{K})::\Gamma,
- \tau,
- \kappa\rangle
- \\[2ex]
-
- \SEM{\GOTO{n}{C}}{\xi}{\Gamma}{\tau}{\kappa}
- & =
- & \langle\xi',\Gamma',\tau\setminus[n],\kappa\setminus[n]\rangle
- \\[1ex]
-
- & & \mathit{where} ~
- \langle \xi', []::\Gamma', []::\tau, []::\kappa\rangle
- = \SEM{C}{\xi}{[\OPEN{n}]::\Gamma}{[]::\tau}{[]::\kappa}
- \\[2ex]
-
-\end{array}
-\]
+\input{body.tex}
\end{document}
projects / helm.git / blobdiff