miTask.icl

   1 module miTask
   2
   3 import StdDebug, StdMisc
   4
   5 from Text import class Text(concat,join,split), instance Text String
   6
   7 import iTasks
   8 import mTask
   9
  10 derive class iTask MTaskMessage
  11
  12 Start :: *World -> *World
  13 Start world = startEngine (
  14         enterInformation "Port Number?" []
  15         >>= \port->withShared ([], False, [], False) (mTaskTask port)
  16         ) world
  17 //Start world = startEngine mTaskTask world
  18
  19 mTaskTask :: Int (Shared ([MTaskMessage],Bool,[MTaskMessage],Bool)) -> Task ()
  20 mTaskTask port ch =
  21         syncNetworkChannel "localhost" port "\n" decode encode ch ||-
  22         (
  23                 sendMsg msgs ch >>= \_->
  24                 viewSharedInformation "channels" [ViewWith lens] ch @! ()
  25         ) >>* [OnAction ActionFinish (always shutDown)]
  26         where
  27                 lens :: ([MTaskMessage],Bool,[MTaskMessage],Bool) -> ([String], [String])
  28                 lens (r,_,s,_) = (f r, f s)
  29                         where
  30                                 f [] = []
  31                                 f [MTEmpty:xs] = f xs
  32                                 f [x:xs] = [toString x:f xs]
  33
  34                 msgs = toMessages 500 (toRealByteCode (unMain bc))
  35
  36                 bc :: Main (ByteCode Int Stmt)
  37                 bc = sds \x=0 In {main = x =. x +. lit 1 :. pub x}
  38
  39 sendMsg :: [MTaskMessage] (Shared ([MTaskMessage],Bool,[MTaskMessage],Bool)) -> Task ()
  40 sendMsg m ch = upd (\(r,rs,s,ss)->(r,rs,s ++ m,ss)) ch @! ()
  41
  42 syncNetworkChannel :: String Int String (String -> m) (n -> String) (Shared ([m],Bool,[n],Bool)) -> Task () | iTask m & iTask n
  43 syncNetworkChannel server port msgSeparator decodeFun encodeFun channel
  44         = tcpconnect server port channel {ConnectionHandlers|onConnect=onConnect,whileConnected=whileConnected,onDisconnect=onDisconnect} @! ()
  45         where
  46                 onConnect _ (received,receiveStopped,send,sendStopped)
  47                         = (Ok "",if (not (isEmpty send)) (Just (received,False,[],sendStopped)) Nothing, map encodeFun send,False)
  48                 whileConnected Nothing acc (received,receiveStopped,send,sendStopped)
  49                         = (Ok acc, Nothing, [], False)
  50                 whileConnected (Just newData) acc (received,receiveStopped,send,sendStopped)
  51                 # [acc:msgs] = reverse (split msgSeparator (concat [acc,newData]))
  52                 # write = if (not (isEmpty msgs && isEmpty send))
  53                         (Just (received ++ map decodeFun (reverse msgs),receiveStopped,[],sendStopped))
  54                         Nothing
  55                 = (Ok acc,write,map encodeFun send,False)
  56
  57                 onDisconnect l (received,receiveStopped,send,sendStopped)
  58                         = (Ok l,Just (received,True,send,sendStopped))
  59
  60 //consumeNetworkStream :: ([m] -> Task ()) (Shared ([m],Bool,[n],Bool)) -> Task () | iTask m & iTask n
  61 //consumeNetworkStream processTask channel
  62 //      = ((watch channel >>* [OnValue (ifValue ifProcess process)]) <! id) @! ()
  63 //      where
  64 //              ifProcess (received,receiveStopped,_,_)
  65 //                      = receiveStopped || (not (isEmpty received))
  66 //
  67 //              process (received,receiveStopped,_,_)
  68 //                      =   upd empty channel
  69 //                      >>| if (isEmpty received) (return ()) (processTask received)
  70 //                      @!  receiveStopped
  71 //
  72 //              empty :: ([m],Bool,[m],Bool) -> ([m],Bool,[m],Bool)
  73 //              empty (_,rs,s,ss) = ([],rs,s,ss)