add some methods"

diff --git a/methods.tex b/methods.tex
index 674a24f..8b5b1fe 100644 (file)
--- a/methods.tex
+++ b/methods.tex
@@ -38,11 +38,11 @@ exact specification is listed in Listing~\ref{lst:devicespec}
 \begin{lstlisting}[language=Clean,label={lst:devicespec},
        caption={Device specification for \glspl{mTask}}]
 :: MTaskDeviceSpec =
-               {haveLed :: Bool
-               ,haveAio :: Bool
-               ,haveDio :: Bool
-               ,taskSpace :: Int // Bytes
-               ,sdsSpace  :: Int // Bytes
+       {haveLed :: Bool
+       ,haveAio :: Bool
+       ,haveDio :: Bool
+       ,taskSpace :: Int // Bytes
+       ,sdsSpace  :: Int // Bytes
        }
 \end{lstlisting}
 \todo{Explain specification, combine task and share space}
@@ -51,6 +51,53 @@ exact specification is listed in Listing~\ref{lst:devicespec}
 
 \section{mTasks}
 \subsection{\gls{EDSL}}
+The \gls{mTask}-\gls{EDSL} contains several classes that need to be implemented
+by a type for it to be an \gls{mTask}. For numeric and boolean arithmetic the
+classes \texttt{arith} and \texttt{boolExpr} are available and listed in a
+shortened version in Listing~\ref{lst:arithbool}. All classes are to be
+implemented by types of kind \texttt{*->*->*} a type \texttt{v t p},
+respectively a view with a type and the role.
 
+\texttt{lit} lifts a constant to the \gls{mTask} domain. For a type to be a
+valid \gls{mTask} type it needs to implement the \texttt{mTaskType} class. The
+binary operators work as expected.
+
+\begin{lstlisting}[language=Clean,label={lst:arithbool},
+       caption={Basic classes for expressions}]
+class mTaskType a | toByteCode, fromByteCode, iTask, TC a
+
+class arith v where
+  lit :: t -> v t Expr | mTaskType t
+  (+.) infixl 6 :: (v t p) (v t q) -> v t Expr | type, +, zero t & isExpr p & isExpr q
+  ...
+class boolExpr v where
+  (&.) infixr 3 :: (v Bool p) (v Bool q) -> v Bool Expr | isExpr p & isExpr q
+  Not           :: (v Bool p) -> v Bool Expr | isExpr p
+  ...
+  (==.) infix 4 :: (v a p) (v a q) -> v Bool Expr | ==, toCode a & isExpr p & isExpr q
+\end{lstlisting}
+
+
+\subsection{Tasks}
 
 \subsection{Shares}
+Shares can live on multiple clients at the same time. For every share created
+for an \gls{mTask} a real \gls{SDS} is created that mirrors the value on the
+client. All shares currently in use are stored in a system-wide \gls{SDS} in
+such a way that the actual share can be retrieved at any moment. All shares
+have a unique numeric identifier and an initial value.
+
+\begin{lstlisting}[language=Clean,label={lst:sharespec}, caption={\acrlong{SDS}}]
+:: BCValue = E.e: BCValue e & mTaskType e
+:: MTaskShareType = MTaskWithShare String | MTaskLens String
+:: MTaskShare =
+       {withTask :: [String]
+       ,withDevice :: [String]
+       ,identifier :: Int
+       ,realShare :: MTaskShareType
+       ,value :: BCValue
+       }
+
+sdsStore :: Shared [MTaskShare]
+\end{lstlisting}
+\todo{Do something with the sharetype}