shares are now lenses

[mTask.git] / Utils / SDS.icl

diff --git a/Utils/SDS.icl b/Utils/SDS.icl
index f1184a8..3cd2566 100644 (file)
--- a/Utils/SDS.icl
+++ b/Utils/SDS.icl
@@ -4,21 +4,47 @@ import iTasks
 import iTasks._Framework.Store
 import Devices.mTaskDevice
 import Shares.mTaskShare
+import Tasks.Examples
+import Data.List
+import qualified Data.Map as DM
 from Data.Func import $
-
-derive class iTask MTaskShare, BCState
+import Data.Tuple
 
 memoryShare :: String a -> Shared a | iTask a
-memoryShare s d = sdsFocus s $ memoryStore "" $ Just d
+memoryShare s d = sdsFocus s $ memoryStore s $ Just d
+
+deviceStoreNP :: Shared [MTaskDevice]
+deviceStoreNP = sdsFocus Nothing $ deviceStore
+
+deviceStore :: RWShared (Maybe (MTaskDevice, Int)) [MTaskDevice] [MTaskDevice]
+deviceStore = SDSSource {SDSSource 
+       | name = "deviceStore"
+       , read = \_->read realDeviceStore
+       , write= realWrite
+       }
+where
+       realWrite mi w iw
+       # (merr, iw) = write w realDeviceStore iw
+       | isError merr || isNothing mi = (merr $> const True, iw)
+       # (Just (dev, ident)) = mi
+       | ident == -1 = (merr $> const True, iw)
+       = case find ((==)dev) w of
+               Nothing = (Error $ exception "Device doesn't exist anymore", iw)
+               Just {deviceShares} = case find (\{identifier}->identifier == ident) deviceShares of
+                       Nothing = (Error $ exception $ "deviceStore: Share doesn't exist: " +++ toString ident, iw)
+                       Just s = case sendMessagesIW [MTUpd ident s.MTaskShare.value] dev iw of
+                               (Error e, iw) = (Error e, iw)
+                               (Ok _, iw) = (Ok $ lens mi, iw)
 
-deviceStore :: Shared [MTaskDevice]
-deviceStore = sharedStore "mTaskDevices" []
+       lens Nothing (Just p) = False
+       lens Nothing Nothing = True
+       lens (Just (d1, i1)) (Just (d2, i2)) = d1 == d2 && (i2 == -1 || i1 == i2)
 
-sdsStore :: Shared [MTaskShare]
-sdsStore = memoryShare "mTaskShares" []
+realDeviceStore :: Shared [MTaskDevice]
+realDeviceStore = sharedStore "mTaskDevices" []
 
 bcStateStore :: Shared BCState
 bcStateStore = memoryShare "mTaskBCState" zero
 
 mTaskTaskStore :: Shared [String]
-mTaskTaskStore = memoryShare "mTaskTasks" ["count", "ledon", "ledoff"]
+mTaskTaskStore = memoryShare "mTaskTasks" $ 'DM'.keys allmTasks