@@ -9,125 +9,70 @@
9{-# LANGUAGE GADTs #-}
9{-# LANGUAGE GADTs #-}
10{-# LANGUAGE GeneralizedNewtypeDeriving #-}
10{-# LANGUAGE GeneralizedNewtypeDeriving #-}
11{-# LANGUAGE LambdaCase #-}
11{-# LANGUAGE LambdaCase #-}
12+{-# LANGUAGE MagicHash #-}
13+{-# LANGUAGE MultiParamTypeClasses #-}
14+{-# LANGUAGE MultiWayIf #-}
12{-# LANGUAGE RankNTypes #-}
15{-# LANGUAGE RankNTypes #-}
13{-# LANGUAGE RoleAnnotations #-}
16{-# LANGUAGE RoleAnnotations #-}
14{-# LANGUAGE ScopedTypeVariables #-}
17{-# LANGUAGE ScopedTypeVariables #-}
15{-# LANGUAGE TypeFamilies #-}
18{-# LANGUAGE TypeFamilies #-}
16{-# LANGUAGE TypeOperators #-}
19{-# LANGUAGE TypeOperators #-}
17{-# LANGUAGE UndecidableInstances #-}
20{-# LANGUAGE UndecidableInstances #-}
18−{-# LANGUAGE PolyKinds #-}
19−{-# LANGUAGE DeriveFunctor #-}
20−{-# LANGUAGE StandaloneDeriving #-}
21−{-# LANGUAGE InstanceSigs #-}
22−{-# LANGUAGE MultiWayIf #-}
24−#ifdef USE_REFLEX_OPTIMIZER
25−{-# OPTIONS_GHC -fplugin=Reflex.Optimizer #-}
27−{-# OPTIONS_GHC -Wunused-binds #-}
28-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
21-- | This module is the implementation of the 'Spider' 'Reflex' engine. It uses
29-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
22-- a graph traversal algorithm to propagate 'Event's and 'Behavior's.
30−module Reflex.Spider.Internal (module Reflex.Spider.Internal) where
23+module Reflex.Spider.Internal where
32−#if MIN_VERSION_base(4,10,0)
33−import Control.Applicative (liftA2)
25+import Control.Applicative
35import Control.Concurrent
26import Control.Concurrent
36import Control.Exception
27import Control.Exception
37−import Control.Monad hiding (forM, forM_, mapM, mapM_)
28+import Control.Monad hiding (forM, forM_, mapM, mapM_, sequence)
38import Control.Monad.Exception
29import Control.Monad.Exception
39−import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_)
30+import Control.Monad.Identity hiding (forM, forM_, mapM, mapM_, sequence)
40import Control.Monad.Primitive
31import Control.Monad.Primitive
41−import Control.Monad.Reader.Class
32+import Control.Monad.Reader hiding (forM, forM_, mapM, mapM_, sequence)
42−import Control.Monad.IO.Class
43−import Control.Monad.ReaderIO
44import Control.Monad.Ref
33import Control.Monad.Ref
45−import Control.Monad.Fail (MonadFail)
46−import qualified Control.Monad.Fail as MonadFail
47import Data.Align
34import Data.Align
48import Data.Coerce
35import Data.Coerce
49−import Data.Dependent.Map (DMap)
36+import Data.Dependent.Map (DMap, DSum (..))
50import qualified Data.Dependent.Map as DMap
37import qualified Data.Dependent.Map as DMap
51−import Data.Dependent.Sum (DSum (..))
52−import Data.FastMutableIntMap (FastMutableIntMap, PatchIntMap (..))
53−import qualified Data.FastMutableIntMap as FastMutableIntMap
54import Data.Foldable hiding (concat, elem, sequence_)
38import Data.Foldable hiding (concat, elem, sequence_)
55import Data.Functor.Constant
40import Data.Functor.Constant
56−import Data.Functor.Misc
57import Data.Functor.Product
41import Data.Functor.Product
58import Data.GADT.Compare
42import Data.GADT.Compare
59import Data.IntMap.Strict (IntMap)
43import Data.IntMap.Strict (IntMap)
60import qualified Data.IntMap.Strict as IntMap
44import qualified Data.IntMap.Strict as IntMap
61import Data.IORef
45import Data.IORef
62−import Data.Kind (Type)
46+import Data.List hiding (foldl')
63−import Data.Maybe hiding (mapMaybe)
64−import Data.Monoid (mempty, (<>))
47+import Data.Maybe
48+import Data.Monoid ((<>))
65−import Data.Proxy
49+import Data.Some (Some)
50+import qualified Data.Some as Some
66import Data.These
51import Data.These
67import Data.Traversable
52import Data.Traversable
68−import Data.Type.Equality ((:~:)(Refl))
53+import Data.Type.Coercion
69−import Data.Witherable (Filterable, mapMaybe)
54+import Data.Word
70−import GHC.Exts hiding (toList)
71import GHC.IORef (IORef (..))
55import GHC.IORef (IORef (..))
72import GHC.Stack
56import GHC.Stack
73−import Reflex.FastWeak
74import System.IO.Unsafe
57import System.IO.Unsafe
75import System.Mem.Weak
58import System.Mem.Weak
76import Unsafe.Coerce
59import Unsafe.Coerce
78−#ifdef MIN_VERSION_semialign
79−#if MIN_VERSION_these(0,8,0)
80−import Data.These.Combinators (justThese)
82−#if MIN_VERSION_semialign(1,1,0)
83−import Data.Zip (Zip (..))
87#ifdef DEBUG_CYCLES
61#ifdef DEBUG_CYCLES
88import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
62import Control.Monad.State hiding (forM, forM_, mapM, mapM_, sequence)
91import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
63import Data.List.NonEmpty (NonEmpty (..), nonEmpty)
92import qualified Data.List.NonEmpty as NonEmpty
64import qualified Data.List.NonEmpty as NonEmpty
65+import Data.Monoid (mempty)
93import Data.Tree (Forest, Tree (..), drawForest)
66import Data.Tree (Forest, Tree (..), drawForest)
94−import Data.List (isPrefixOf)
67+#endif
96−import Data.FastWeakBag (FastWeakBag, FastWeakBagTicket)
97−import qualified Data.FastWeakBag as FastWeakBag
99−import Data.Reflection
100−import Data.Some (Some(Some))
101−import Data.Type.Coercion
102−import Data.Profunctor.Unsafe ((#.), (.#))
103−import Data.WeakBag (WeakBag, WeakBagTicket, _weakBag_children)
69+import Data.WeakBag (WeakBag, WeakBagTicket)
104import qualified Data.WeakBag as WeakBag
70import qualified Data.WeakBag as WeakBag
105−import qualified Reflex.Class
106import qualified Reflex.Class as R
71import qualified Reflex.Class as R
107−import qualified Reflex.Host.Class
72+import qualified Reflex.Host.Class as R
108−import Reflex.NotReady.Class
110−import qualified Data.Patch.DMapWithMove as PatchDMapWithMove
111−import Reflex.PerformEvent.Base (PerformEventT)
113−#ifdef DEBUG_TRACE_EVENTS
114−import qualified Data.ByteString.Char8 as BS8
115−import System.IO (stderr)
116−import Data.List (isPrefixOf)
119−-- TODO stdout might not be the best channel for debug output
74+-- Note: must come last to silence warnings due to AMP on GHC < 7.10
120−debugStrLn :: String -> IO ()
75+import Prelude hiding (any, concat, mapM, mapM_, sequence)
121−debugStrLn = putStrLn
123−#ifdef DEBUG_TRACE_EVENTS
124−withStackOneLine :: (BS8.ByteString -> a) -> a
125−withStackOneLine expr = unsafePerformIO $ do
126− stack <- currentCallStack
127− return (expr . BS8.pack . unwords . dropInternal . reverse $ stack)
128− where dropInternal = filterStack "Reflex.Spider.Internal"
132debugPropagate :: Bool
77debugPropagate :: Bool
@@ -136,42 +81,31 @@ debugInvalidateHeight :: Bool
136debugInvalidate :: Bool
81debugInvalidate :: Bool
138#ifdef DEBUG
83#ifdef DEBUG
139#define DEBUG_NODEIDS
85#define DEBUG_NODEIDS
141−#ifdef DEBUG_TRACE_PROPAGATION
142debugPropagate = True
87debugPropagate = True
144−debugPropagate = False
147−#ifdef DEBUG_TRACE_HEIGHT
148−debugInvalidateHeight = True
150debugInvalidateHeight = False
89debugInvalidateHeight = False
153−#ifdef DEBUG_TRACE_INVALIDATION
154debugInvalidate = True
91debugInvalidate = True
156−debugInvalidate = False
159class HasNodeId a where
93class HasNodeId a where
160 getNodeId :: a -> Int
94 getNodeId :: a -> Int
162−instance HasNodeId (CacheSubscribed x a) where
96+instance HasNodeId (Hold x p a) where
163− getNodeId = _cacheSubscribed_nodeId
165−instance HasNodeId (FanInt x a) where
166− getNodeId = _fanInt_nodeId
168−instance HasNodeId (Hold x p) where
169 getNodeId = holdNodeId
97 getNodeId = holdNodeId
99+instance HasNodeId (PushSubscribed x a b) where
100+ getNodeId = pushSubscribedNodeId
171instance HasNodeId (SwitchSubscribed x a) where
102instance HasNodeId (SwitchSubscribed x a) where
172 getNodeId = switchSubscribedNodeId
103 getNodeId = switchSubscribedNodeId
105+instance HasNodeId (MergeSubscribed x a) where
106+ getNodeId = mergeSubscribedNodeId
174−instance HasNodeId (FanSubscribed x v a) where
108+instance HasNodeId (FanSubscribed x a) where
175 getNodeId = fanSubscribedNodeId
109 getNodeId = fanSubscribedNodeId
177instance HasNodeId (CoincidenceSubscribed x a) where
111instance HasNodeId (CoincidenceSubscribed x a) where
@@ -185,16 +119,41 @@ instance HasNodeId (Pull x a) where
186{-# INLINE showNodeId #-}
120{-# INLINE showNodeId #-}
187showNodeId :: HasNodeId a => a -> String
121showNodeId :: HasNodeId a => a -> String
188−showNodeId = showNodeId' . getNodeId
122+showNodeId = ("#"<>) . show . getNodeId
190−showNodeId' :: Int -> String
124+showSubscriberType :: Subscriber x a -> String
191−showNodeId' = ("#"<>) . show
125+showSubscriberType = \case
192−
126+ SubscriberPush _ _ -> "SubscriberPush"
127+ SubscriberMerge _ _ -> "SubscriberMerge"
128+ SubscriberFan _ -> "SubscriberFan"
129+ SubscriberMergeChange _ -> "SubscriberMergeChange"
130+ SubscriberHold _ -> "SubscriberHold"
131+ SubscriberHoldIdentity _ -> "SubscriberHoldIdentity"
132+ SubscriberSwitch _ -> "SubscriberSwitch"
133+ SubscriberCoincidenceOuter _ -> "SubscriberCoincidenceOuter"
134+ SubscriberCoincidenceInner _ -> "SubscriberCoincidenceInner"
135+ SubscriberHandle -> "SubscriberHandle"
137+showEventType :: Event x a -> String
138+showEventType = \case
139+ EventRoot _ _ -> "EventRoot"
140+ EventNever -> "EventNever"
141+ EventPush _ -> "EventPush"
142+ EventMerge _ -> "EventMerge"
143+ EventFan _ _ -> "EventFan"
144+ EventSwitch _ -> "EventSwitch"
145+ EventCoincidence _ -> "EventCoincidence"
146+ EventHold _ -> "EventHold"
147+ EventDyn _ -> "EventDyn"
148+ EventHoldIdentity _ -> "EventHoldIdentity"
149+ EventDynIdentity _ -> "EventDynIdentity"
196debugPropagate = False
153debugPropagate = False
197debugInvalidateHeight = False
155debugInvalidateHeight = False
198debugInvalidate = False
157debugInvalidate = False
200-- This must be inline, or error messages will cause memory leaks due to retaining the node in question
159-- This must be inline, or error messages will cause memory leaks due to retaining the node in question
@@ -202,10 +161,6 @@ debugInvalidate = False
202showNodeId :: a -> String
161showNodeId :: a -> String
203showNodeId _ = ""
162showNodeId _ = ""
205−{-# INLINE showNodeId' #-}
206−showNodeId' :: Int -> String
211#ifdef DEBUG_NODEIDS
166#ifdef DEBUG_NODEIDS
@@ -215,237 +170,59 @@ nextNodeIdRef = unsafePerformIO $ newIORef 1
216newNodeId :: IO Int
171newNodeId :: IO Int
217newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
172newNodeId = atomicModifyIORef' nextNodeIdRef $ \n -> (succ n, n)
220−--------------------------------------------------------------------------------
222−--------------------------------------------------------------------------------
224−--NB: Once you subscribe to an Event, you must always hold on the the WHOLE EventSubscription you get back
225−-- If you do not retain the subscription, you may be prematurely unsubscribed from the parent event.
226−data EventSubscription x = EventSubscription
227− { _eventSubscription_unsubscribe :: !(IO ())
228− , _eventSubscription_subscribed :: {-# UNPACK #-} !(EventSubscribed x)
231−unsubscribe :: EventSubscription x -> IO ()
174+{-# NOINLINE unsafeNodeId #-}
232−unsubscribe (EventSubscription u _) = u
175+unsafeNodeId :: a -> Int
176+unsafeNodeId a = unsafePerformIO $ do
234--------------------------------------------------------------------------------
181--------------------------------------------------------------------------------
236--------------------------------------------------------------------------------
183--------------------------------------------------------------------------------
238−newtype Event x a = Event { unEvent :: Subscriber x a -> EventM x (EventSubscription x, Maybe a) }
240−{-# INLINE subscribeAndRead #-}
241−subscribeAndRead :: Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
185+newtype Event x a = Event { subscribeAndRead :: Subscriber x a -> EventM x (EventSubscription x a, Maybe a) }
242−subscribeAndRead = unEvent
245−"cacheEvent/cacheEvent" forall e. cacheEvent (cacheEvent e) = cacheEvent e
246−"cacheEvent/pushCheap" forall f e. pushCheap f (cacheEvent e) = cacheEvent (pushCheap f e)
247−"hold/cacheEvent" forall f e. hold f (cacheEvent e) = hold f e
250−-- | Construct an 'Event' equivalent to that constructed by 'push', but with no
251−-- caching; if the computation function is very cheap, this is (much) more
252−-- efficient than 'push'
253−{-# INLINE [1] pushCheap #-}
254−pushCheap :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
255−pushCheap !f e = Event $ \sub -> do
256− (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "push" $ sub
257− { subscriberPropagate = \a -> do
259− mapM_ (subscriberPropagate sub) mb
261− occ' <- join <$> mapM f occ
262− return (subscription, occ')
264−-- | A subscriber that never triggers other 'Event's
265−{-# INLINE terminalSubscriber #-}
266−terminalSubscriber :: (a -> EventM x ()) -> Subscriber x a
267−terminalSubscriber p = Subscriber
268− { subscriberPropagate = p
269− , subscriberInvalidateHeight = \_ -> return ()
270− , subscriberRecalculateHeight = \_ -> return ()
273−-- | Subscribe to an Event only for the duration of one occurrence
274−{-# INLINE subscribeAndReadHead #-}
275−subscribeAndReadHead :: HasSpiderTimeline x => Event x a -> Subscriber x a -> EventM x (EventSubscription x, Maybe a)
276−subscribeAndReadHead e sub = do
277− subscriptionRef <- liftIO $ newIORef $ error "subscribeAndReadHead: not initialized"
278− (subscription, occ) <- subscribeAndRead e $ debugSubscriber' "head" $ sub
279− { subscriberPropagate = \a -> do
280− liftIO $ unsubscribe =<< readIORef subscriptionRef
281− subscriberPropagate sub a
283− liftIO $ case occ of
284− Nothing -> writeIORef subscriptionRef $! subscription
285− Just _ -> unsubscribe subscription
286− return (subscription, occ)
288−--TODO: Make this lazy in its input event
289−headE :: (MonadIO m, Defer (SomeMergeInit x) m, HasSpiderTimeline x) => Event x a -> m (Event x a)
291− parent <- liftIO $ newIORef $ Just originalE
292− defer $ SomeMergeInit $ do --TODO: Rename SomeMergeInit appropriately
293− let clearParent = liftIO $ writeIORef parent Nothing
294− (_, occ) <- subscribeAndReadHead originalE $ terminalSubscriber $ const clearParent
295− when (isJust occ) clearParent
296− return $ Event $ \sub ->
297− liftIO (readIORef parent) >>= \case
298− Nothing -> subscribeAndReadNever
299− Just e -> subscribeAndReadHead e sub
301−data CacheSubscribed x a
302− = CacheSubscribed { _cacheSubscribed_subscribers :: {-# UNPACK #-} !(FastWeakBag (Subscriber x a))
303− , _cacheSubscribed_parent :: {-# UNPACK #-} !(EventSubscription x)
304− , _cacheSubscribed_occurrence :: {-# UNPACK #-} !(IORef (Maybe a))
306− , _cacheSubscribed_nodeId :: {-# UNPACK #-} !Int
310−nowSpiderEventM :: (HasSpiderTimeline x) => EventM x (R.Event (SpiderTimeline x) ())
314−now :: (MonadIO m, Defer (Some Clear) m, HasSpiderTimeline x
317− nowOrNot <- liftIO $ newIORef $ Just ()
318− scheduleClear nowOrNot
319− return . Event $ \_ -> do
320− occ <- liftIO . readIORef $ nowOrNot
321− return ( EventSubscription (return ()) eventSubscribedNow
325−-- | Construct an 'Event' whose value is guaranteed not to be recomputed
328−--TODO: Try a caching strategy where we subscribe directly to the parent when
329−--there's only one subscriber, and then build our own FastWeakBag only when a second
331−{-# NOINLINE [0] cacheEvent #-}
332−cacheEvent :: forall x a. HasSpiderTimeline x => Event x a -> Event x a
334−#ifdef DEBUG_TRACE_EVENTS
335− withStackOneLine $ \callSite -> Event $
339− unsafePerformIO $ do
340− mSubscribedRef :: IORef (FastWeak (CacheSubscribed x a))
341− <- newIORef emptyFastWeak
342− pure $ \sub -> {-# SCC "cacheEvent" #-} do
343−#ifdef DEBUG_TRACE_EVENTS
344− unless (BS8.null callSite) $ liftIO $ BS8.hPutStrLn stderr callSite
346− subscribedTicket <- liftIO (readIORef mSubscribedRef >>= getFastWeakTicket) >>= \case
347− Just subscribedTicket -> return subscribedTicket
350− nodeId <- liftIO newNodeId
352− subscribers <- liftIO FastWeakBag.empty
353− occRef <- liftIO $ newIORef Nothing -- This should never be read prior to being set below
355− (parentSub, occ) <- subscribeAndRead e $ debugSubscriber' ("cacheEvent" <> showNodeId' nodeId) $ Subscriber
357− (parentSub, occ) <- subscribeAndRead e $ Subscriber
359− { subscriberPropagate = \a -> do
360− liftIO $ writeIORef occRef (Just a)
361− scheduleClear occRef
362− propagateFast a subscribers
363− , subscriberInvalidateHeight = FastWeakBag.traverse_ subscribers . invalidateSubscriberHeight
364− , subscriberRecalculateHeight = FastWeakBag.traverse_ subscribers . recalculateSubscriberHeight
366− when (isJust occ) $ do
367− liftIO $ writeIORef occRef occ -- Set the initial value of occRef; we don't need to do this if occ is Nothing
368− scheduleClear occRef
369− let !subscribed = CacheSubscribed
370− { _cacheSubscribed_subscribers = subscribers
371− , _cacheSubscribed_parent = parentSub
372− , _cacheSubscribed_occurrence = occRef
374− , _cacheSubscribed_nodeId = nodeId
377− subscribedTicket <- liftIO $ mkFastWeakTicket subscribed
378− liftIO $ writeIORef mSubscribedRef =<< getFastWeakTicketWeak subscribedTicket
379− return subscribedTicket
380− liftIO $ cacheSubscription sub mSubscribedRef subscribedTicket
382−cacheSubscription :: Subscriber x a -> IORef (FastWeak (CacheSubscribed x a))
383− -> FastWeakTicket (CacheSubscribed x a) -> IO (EventSubscription x, Maybe a)
384−cacheSubscription sub mSubscribedRef subscribedTicket = do
385− subscribed <- getFastWeakTicketValue subscribedTicket
386− ticket <- FastWeakBag.insert sub $ _cacheSubscribed_subscribers subscribed
387− occ <- readIORef $ _cacheSubscribed_occurrence subscribed
389− let parentSub = _cacheSubscribed_parent subscribed
390− es = EventSubscription
391− { _eventSubscription_unsubscribe = do
392− FastWeakBag.remove ticket
394− isEmpty <- FastWeakBag.isEmpty $ _cacheSubscribed_subscribers subscribed
396− writeIORef mSubscribedRef emptyFastWeak
397− unsubscribe parentSub
399− touch subscribedTicket
400− , _eventSubscription_subscribed = EventSubscribed
401− { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed parentSub
402− , eventSubscribedRetained = toAny subscribedTicket
404− , eventSubscribedGetParents = return [_eventSubscription_subscribed parentSub]
405− , eventSubscribedHasOwnHeightRef = False
406− , eventSubscribedWhoCreated = whoCreatedIORef mSubscribedRef
413−subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x)
187+subscribe :: Event x a -> Subscriber x a -> EventM x (EventSubscription x a)
414subscribe e s = fst <$> subscribeAndRead e s
188subscribe e s = fst <$> subscribeAndRead e s
416{-# INLINE wrap #-}
190{-# INLINE wrap #-}
417−wrap :: MonadIO m => (t -> EventSubscribed x) -> (Subscriber x a -> m (WeakBagTicket, t, Maybe a)) -> Subscriber x a -> m (EventSubscription x, Maybe a)
191+wrap :: MonadIO m => (t -> EventSubscribed x a) -> (Subscriber x a -> m (WeakBagTicket (Subscriber x a), t, Maybe a)) -> Subscriber x a -> m (EventSubscription x a, Maybe a)
418wrap tag getSpecificSubscribed sub = do
192wrap tag getSpecificSubscribed sub = do
419 (sln, subd, occ) <- getSpecificSubscribed sub
193 (sln, subd, occ) <- getSpecificSubscribed sub
420 let es = tag subd
194 let es = tag subd
421− return (EventSubscription (WeakBag.remove sln >> touch sln) es, occ)
195+ return (EventSubscription (Just sln) es, occ)
423−eventRoot :: (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Event x a
197+eventRoot :: GCompare k => k a -> Root x k -> Event x a
424eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
198eventRoot !k !r = Event $ wrap eventSubscribedRoot $ liftIO . getRootSubscribed k r
426−subscribeAndReadNever :: EventM x (EventSubscription x, Maybe a)
427−subscribeAndReadNever = return (EventSubscription (return ()) eventSubscribedNever, Nothing)
429eventNever :: Event x a
200eventNever :: Event x a
430−eventNever = Event $ const subscribeAndReadNever
201+eventNever = Event $ \_ -> return (EventSubscription Nothing eventSubscribedNever, Nothing)
203+eventPush :: Push x b a -> Event x a
204+eventPush !p = Event $ wrap eventSubscribedPush $ getPushSubscribed p
206+eventMerge :: (GCompare k, a ~ DMap k Identity) => Merge x k -> Event x a
207+eventMerge !m = Event $ wrap eventSubscribedMerge $ getMergeSubscribed m
432−eventFan :: (GCompare k, HasSpiderTimeline x) => k a -> Fan x k v -> Event x (v a)
209+eventFan :: GCompare k => k a -> Fan x k -> Event x a
433eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
210eventFan !k !f = Event $ wrap eventSubscribedFan $ getFanSubscribed k f
435−eventSwitch :: HasSpiderTimeline x => Switch x a -> Event x a
212+eventSwitch :: Switch x a -> Event x a
436eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
213eventSwitch !s = Event $ wrap eventSubscribedSwitch $ getSwitchSubscribed s
438−eventCoincidence :: HasSpiderTimeline x => Coincidence x a -> Event x a
215+eventCoincidence :: Coincidence x a -> Event x a
439eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
216eventCoincidence !c = Event $ wrap eventSubscribedCoincidence $ getCoincidenceSubscribed c
441eventHold :: Hold x p -> Event x p
218eventHold :: Hold x p -> Event x p
442eventHold !h = Event $ subscribeHoldEvent h
219eventHold !h = Event $ subscribeHoldEvent h
444−eventDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> Event x p
221+eventDyn :: R.Patch p => Dyn x p -> Event x p
445eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
222eventDyn !j = Event $ \sub -> getDynHold j >>= \h -> subscribeHoldEvent h sub
447{-# INLINE subscribeCoincidenceInner #-}
224{-# INLINE subscribeCoincidenceInner #-}
448−subscribeCoincidenceInner :: HasSpiderTimeline x => Event x a -> Height -> CoincidenceSubscribed x a -> EventM x (Maybe a, Height, EventSubscribed x)
225+subscribeCoincidenceInner :: CanSubscribe x m => Event x a -> Height -> CoincidenceSubscribed x a -> m (Maybe a, Height, EventSubscribed x a)
449subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
226subscribeCoincidenceInner inner outerHeight subscribedUnsafe = do
450 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
227 subInner <- liftIO $ newSubscriberCoincidenceInner subscribedUnsafe
451 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
228 (subscription@(EventSubscription _ innerSubd), innerOcc) <- subscribeAndRead inner subInner
@@ -464,75 +241,171 @@ data Subscriber x a = Subscriber
464 , subscriberRecalculateHeight :: !(Height -> IO ())
241 , subscriberRecalculateHeight :: !(Height -> IO ())
244+--TODO: Move this comment to WeakBag
245+-- These function are constructor functions that are marked NOINLINE so they are
246+-- opaque to GHC. If we do not do this, then GHC will sometimes fuse the constructor away
247+-- so any weak references that are attached to the constructors will have their
248+-- finalizer run. Using the opaque constructor, does not see the
249+-- constructor application, so it behaves like an IORef and cannot be fused away.
251+-- The result is also evaluated to WHNF, since forcing a thunk invalidates
252+-- the weak pointer to it in some cases.
254+newSubscriberPush :: (a -> ComputeM x (Maybe b)) -> PushSubscribed x a b -> IO (Subscriber x a)
255+newSubscriberPush compute subscribed = return $ Subscriber
256+ { subscriberPropagate = \a -> {-# SCC "traversePush" #-} do
257+ tracePropagate $ "SubscriberPush" <> showNodeId subscribed
258+ occ <- runComputeM $ compute a
260+ Nothing -> return () -- No need to write a Nothing back into the Ref
262+ liftIO $ writeIORef (pushSubscribedOccurrence subscribed) occ
263+ scheduleClear $ pushSubscribedOccurrence subscribed
264+ propagate o $ pushSubscribedSubscribers subscribed
265+ , subscriberInvalidateHeight = \old -> do
266+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberPush" <> showNodeId subscribed
267+ WeakBag.traverse (pushSubscribedSubscribers subscribed) $ invalidateSubscriberHeight old
268+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberPush" <> showNodeId subscribed <> " done"
269+ , subscriberRecalculateHeight = \new -> do
270+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberPush" <> showNodeId subscribed
271+ WeakBag.traverse (pushSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
272+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberPush" <> showNodeId subscribed <> " done"
467−newSubscriberHold :: (HasSpiderTimeline x, Patch p) => Hold x p -> IO (Subscriber x p)
275+newSubscriberHold :: R.Patch p => Hold x p -> IO (Subscriber x p)
468newSubscriberHold h = return $ Subscriber
276newSubscriberHold h = return $ Subscriber
469 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
277 { subscriberPropagate = {-# SCC "traverseHold" #-} propagateSubscriberHold h
470 , subscriberInvalidateHeight = \_ -> return ()
278 , subscriberInvalidateHeight = \_ -> return ()
471 , subscriberRecalculateHeight = \_ -> return ()
279 , subscriberRecalculateHeight = \_ -> return ()
282+newSubscriberMerge :: GCompare k => k a -> MergeSubscribed x k -> IO (Subscriber x a)
283+newSubscriberMerge k subscribed = return $ Subscriber
284+ { subscriberPropagate = \a -> {-# SCC "traverseMerge" #-} do
285+ tracePropagate $ "SubscriberMerge" <> showNodeId subscribed
286+ oldM <- liftIO $ readIORef $ mergeSubscribedAccum subscribed
287+ let newM = DMap.insertWith (error $ "Same key fired multiple times for Merge" <> showNodeId subscribed) k (Identity a) oldM
288+ tracePropagate $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
289+ liftIO $ writeIORef (mergeSubscribedAccum subscribed) $! newM
290+ when (DMap.null oldM) $ do -- Only schedule the firing once
291+ height <- liftIO $ readIORef $ mergeSubscribedHeight subscribed
292+ --TODO: assertions about height
293+ currentHeight <- getCurrentHeight
294+ when (height <= currentHeight) $ do
295+ if height /= invalidHeight
297+ myStack <- liftIO $ whoCreatedIORef $ mergeSubscribedCachedSubscribed subscribed
298+ error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
301+ nodesInvolvedInCycle <- walkInvalidHeightParents $ eventSubscribedMerge subscribed
302+ stacks <- forM nodesInvolvedInCycle $ \(Some.This es) -> whoCreatedEventSubscribed es
303+ let cycleInfo = ":\n" <> drawForest (listsToForest stacks)
307+ error $ "Causality loop found" <> cycleInfo
308+ scheduleMerge height subscribed
309+ , subscriberInvalidateHeight = \old -> do
310+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed
311+ removeMergeHeight old subscribed
312+ invalidateMergeHeight subscribed
313+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed <> " done"
314+ , subscriberRecalculateHeight = \new -> do
315+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed
316+ addMergeHeight new subscribed
317+ revalidateMergeHeight subscribed
318+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberMerge" <> showNodeId subscribed <> " done"
321+newSubscriberMergeChange :: GCompare k => MergeSubscribed x k -> IO (Subscriber x (R.PatchDMap k (Event x)))
322+newSubscriberMergeChange subscribed = return $ Subscriber
323+ { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
324+ tracePropagate $ "SubscriberMerge" <> showNodeId subscribed
325+ defer $ SomeMergeUpdate a subscribed
326+ , subscriberInvalidateHeight = \_ -> return ()
327+ , subscriberRecalculateHeight = \_ -> return ()
474−newSubscriberFan :: forall x k v. (HasSpiderTimeline x, GCompare k) => FanSubscribed x k v -> IO (Subscriber x (DMap k v))
330+newSubscriberFan :: GCompare k => FanSubscribed x k -> IO (Subscriber x (DMap k Identity))
475−newSubscriberFan subscribed = debugSubscriber ("SubscriberFan " <> showNodeId subscribed) $ Subscriber
331+newSubscriberFan subscribed = return $ Subscriber
476 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
332 { subscriberPropagate = \a -> {-# SCC "traverseFan" #-} do
477 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
333 subs <- liftIO $ readIORef $ fanSubscribedSubscribers subscribed
478− tracePropagate (Proxy :: Proxy x) $ show (DMap.size subs) <> " keys subscribed, " <> show (DMap.size a) <> " keys firing"
334+ tracePropagate $ "SubscriberFan" <> showNodeId subscribed <> ": " ++ show (DMap.size subs) ++ " keys subscribed, " ++ show (DMap.size a) ++ " keys firing"
479 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
335 liftIO $ writeIORef (fanSubscribedOccurrence subscribed) $ Just a
480 scheduleClear $ fanSubscribedOccurrence subscribed
336 scheduleClear $ fanSubscribedOccurrence subscribed
481− let f _ (Pair v subsubs) = do
337+ let f _ (Pair (Identity v) subsubs) = do
482 propagate v $ _fanSubscribedChildren_list subsubs
338 propagate v $ _fanSubscribedChildren_list subsubs
483 return $ Constant ()
339 return $ Constant ()
484 _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
340 _ <- DMap.traverseWithKey f $ DMap.intersectionWithKey (\_ -> Pair) a subs --TODO: Would be nice to have DMap.traverse_
485 return ()
341 return ()
486 , subscriberInvalidateHeight = \old -> do
342 , subscriberInvalidateHeight = \old -> do
343+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
487 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
344 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
488− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
345+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ invalidateSubscriberHeight old
346+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
489 , subscriberRecalculateHeight = \new -> do
347 , subscriberRecalculateHeight = \new -> do
348+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed
490 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
349 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
491− forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse_ (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
350+ forM_ (DMap.toList subscribers) $ \(_ :=> v) -> WeakBag.traverse (_fanSubscribedChildren_list v) $ recalculateSubscriberHeight new
351+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberFan" <> showNodeId subscribed <> " done"
494−newSubscriberSwitch :: forall x a. HasSpiderTimeline x => SwitchSubscribed x a -> IO (Subscriber x a)
354+newSubscriberSwitch :: SwitchSubscribed x a -> IO (Subscriber x a)
495−newSubscriberSwitch subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
355+newSubscriberSwitch subscribed = return $ Subscriber
496 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
356 { subscriberPropagate = \a -> {-# SCC "traverseSwitch" #-} do
357+ tracePropagate $ "SubscriberSwitch" <> showNodeId subscribed
497 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
358 liftIO $ writeIORef (switchSubscribedOccurrence subscribed) $ Just a
498 scheduleClear $ switchSubscribedOccurrence subscribed
359 scheduleClear $ switchSubscribedOccurrence subscribed
499 propagate a $ switchSubscribedSubscribers subscribed
360 propagate a $ switchSubscribedSubscribers subscribed
500 , subscriberInvalidateHeight = \_ -> do
361 , subscriberInvalidateHeight = \_ -> do
362+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
501 oldHeight <- readIORef $ switchSubscribedHeight subscribed
363 oldHeight <- readIORef $ switchSubscribedHeight subscribed
502 when (oldHeight /= invalidHeight) $ do
364 when (oldHeight /= invalidHeight) $ do
503 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
365 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
504− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
366+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
367+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
368+ , subscriberRecalculateHeight = \new -> do
369+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed
505− , subscriberRecalculateHeight = (`updateSwitchHeight` subscribed)
370+ updateSwitchHeight new subscribed
371+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberSwitch" <> showNodeId subscribed <> " done"
508−newSubscriberCoincidenceOuter :: forall x b. HasSpiderTimeline x => CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
374+newSubscriberCoincidenceOuter :: CoincidenceSubscribed x b -> IO (Subscriber x (Event x b))
509−newSubscriberCoincidenceOuter subscribed = debugSubscriber ("SubscriberCoincidenceOuter" <> showNodeId subscribed) $ Subscriber
375+newSubscriberCoincidenceOuter subscribed = return $ Subscriber
510 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
376 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceOuter" #-} do
377+ tracePropagate $ "SubscriberCoincidenceOuter" <> showNodeId subscribed
511 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
378 outerHeight <- liftIO $ readIORef $ coincidenceSubscribedHeight subscribed
512− tracePropagate (Proxy :: Proxy x) $ " outerHeight = " <> show outerHeight
379+ tracePropagate $ " outerHeight = " <> show outerHeight
513 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
380 (occ, innerHeight, innerSubd) <- subscribeCoincidenceInner a outerHeight subscribed
514− tracePropagate (Proxy :: Proxy x) $ " isJust occ = " <> show (isJust occ)
381+ tracePropagate $ " isJust occ = " <> show (isJust occ)
515− tracePropagate (Proxy :: Proxy x) $ " innerHeight = " <> show innerHeight
382+ tracePropagate $ " innerHeight = " <> show innerHeight
517 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
383 liftIO $ writeIORef (coincidenceSubscribedInnerParent subscribed) $ Just innerSubd
518 scheduleClear $ coincidenceSubscribedInnerParent subscribed
384 scheduleClear $ coincidenceSubscribedInnerParent subscribed
519 case occ of
385 case occ of
520− Nothing ->
386+ Nothing -> do
521 when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
387 when (innerHeight > outerHeight) $ liftIO $ do -- If the event fires, it will fire at a later height
522 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
388 writeIORef (coincidenceSubscribedHeight subscribed) $! innerHeight
523− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
389+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight outerHeight
524− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
390+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight innerHeight
525 Just o -> do -- Since it's already firing, no need to adjust height
391 Just o -> do -- Since it's already firing, no need to adjust height
526 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
392 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) occ
527 scheduleClear $ coincidenceSubscribedOccurrence subscribed
393 scheduleClear $ coincidenceSubscribedOccurrence subscribed
528 propagate o $ coincidenceSubscribedSubscribers subscribed
394 propagate o $ coincidenceSubscribedSubscribers subscribed
395+ , subscriberInvalidateHeight = \_ -> do
396+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
529− , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
397+ invalidateCoincidenceHeight subscribed
398+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
399+ , subscriberRecalculateHeight = \_ -> do
400+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed
530− , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
401+ recalculateCoincidenceHeight subscribed
402+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceOuter" <> showNodeId subscribed <> " done"
533−newSubscriberCoincidenceInner :: forall x a. HasSpiderTimeline x => CoincidenceSubscribed x a -> IO (Subscriber x a)
405+newSubscriberCoincidenceInner :: CoincidenceSubscribed x a -> IO (Subscriber x a)
534−newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoincidenceInner" <> showNodeId subscribed) $ Subscriber
406+newSubscriberCoincidenceInner subscribed = return $ Subscriber
535 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
407 { subscriberPropagate = \a -> {-# SCC "traverseCoincidenceInner" #-} do
408+ tracePropagate $ "SubscriberCoincidenceInner" <> showNodeId subscribed
536 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
409 occ <- liftIO $ readIORef $ coincidenceSubscribedOccurrence subscribed
537 case occ of
410 case occ of
538 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
411 Just _ -> return () -- SubscriberCoincidenceOuter must have already propagated this event
@@ -540,8 +413,14 @@ newSubscriberCoincidenceInner subscribed = debugSubscriber ("SubscriberCoinciden
540 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
413 liftIO $ writeIORef (coincidenceSubscribedOccurrence subscribed) $ Just a
541 scheduleClear $ coincidenceSubscribedOccurrence subscribed
414 scheduleClear $ coincidenceSubscribedOccurrence subscribed
542 propagate a $ coincidenceSubscribedSubscribers subscribed
415 propagate a $ coincidenceSubscribedSubscribers subscribed
416+ , subscriberInvalidateHeight = \_ -> do
417+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
543− , subscriberInvalidateHeight = \_ -> invalidateCoincidenceHeight subscribed
418+ invalidateCoincidenceHeight subscribed
419+ when debugInvalidateHeight $ putStrLn $ "invalidateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
420+ , subscriberRecalculateHeight = \_ -> do
421+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed
544− , subscriberRecalculateHeight = \_ -> recalculateCoincidenceHeight subscribed
422+ recalculateCoincidenceHeight subscribed
423+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: SubscriberCoincidenceInner" <> showNodeId subscribed <> " done"
547invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
426invalidateSubscriberHeight :: Height -> Subscriber x a -> IO ()
@@ -551,45 +430,30 @@ recalculateSubscriberHeight :: Height -> Subscriber x a -> IO ()
551recalculateSubscriberHeight = flip subscriberRecalculateHeight
430recalculateSubscriberHeight = flip subscriberRecalculateHeight
553-- | Propagate everything at the current height
432-- | Propagate everything at the current height
554−propagate :: forall x a. HasSpiderTimeline x => a -> WeakBag (Subscriber x a) -> EventM x ()
433+propagate :: a -> WeakBag (Subscriber x a) -> EventM x ()
555−propagate a subscribers = withIncreasedDepth (Proxy::Proxy x) $
434+propagate a subscribers = withIncreasedDepth $ do
556− -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
557− --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
558− WeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
560−-- | Propagate everything at the current height
561−propagateFast :: forall x a. HasSpiderTimeline x => a -> FastWeakBag (Subscriber x a) -> EventM x ()
562−propagateFast a subscribers = withIncreasedDepth (Proxy::Proxy x) $
563 -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
435 -- Note: in the following traversal, we do not visit nodes that are added to the list during our traversal; they are new events, which will necessarily have full information already, so there is no need to traverse them
564 --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
436 --TODO: Should we check if nodes already have their values before propagating? Maybe we're re-doing work
565− FastWeakBag.traverse_ subscribers $ \s -> subscriberPropagate s a
437+ WeakBag.traverse subscribers $ \s -> subscriberPropagate s a
567--------------------------------------------------------------------------------
439--------------------------------------------------------------------------------
568-- EventSubscribed
440-- EventSubscribed
569--------------------------------------------------------------------------------
441--------------------------------------------------------------------------------
574−-- Why do we use Any here, instead of just giving eventSubscribedRetained an
575−-- existential type? Sadly, GHC does not currently know how to unbox types
576−-- with existentially quantified fields. So instead we just coerce values
577−-- to type Any on the way in. Since we never coerce them back, this is
579−data EventSubscribed x = EventSubscribed
443+data EventSubscribed x a = forall b. EventSubscribed
580 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
444 { eventSubscribedHeightRef :: {-# UNPACK #-} !(IORef Height)
581− , eventSubscribedRetained :: {-# NOUNPACK #-} !Any
445+ , eventSubscribedRetained :: {-# NOUNPACK #-} !b
582#ifdef DEBUG_CYCLES
446#ifdef DEBUG_CYCLES
583− , eventSubscribedGetParents :: !(IO [EventSubscribed x]) -- For debugging loops
447+ , eventSubscribedGetParents :: !(IO [Some (EventSubscribed x)]) -- For debugging loops
584 , eventSubscribedHasOwnHeightRef :: !Bool
448 , eventSubscribedHasOwnHeightRef :: !Bool
585 , eventSubscribedWhoCreated :: !(IO [String])
449 , eventSubscribedWhoCreated :: !(IO [String])
589−eventSubscribedRoot :: RootSubscribed x a -> EventSubscribed x
453+eventSubscribedRoot :: RootSubscribed x a -> EventSubscribed x a
590eventSubscribedRoot !r = EventSubscribed
454eventSubscribedRoot !r = EventSubscribed
591 { eventSubscribedHeightRef = zeroRef
455 { eventSubscribedHeightRef = zeroRef
592− , eventSubscribedRetained = toAny r
456+ , eventSubscribedRetained = r
593#ifdef DEBUG_CYCLES
457#ifdef DEBUG_CYCLES
594 , eventSubscribedGetParents = return []
458 , eventSubscribedGetParents = return []
595 , eventSubscribedHasOwnHeightRef = False
459 , eventSubscribedHasOwnHeightRef = False
@@ -597,96 +461,122 @@ eventSubscribedRoot !r = EventSubscribed
600−eventSubscribedNever :: EventSubscribed x
464+eventSubscribedNever :: EventSubscribed x a
601eventSubscribedNever = EventSubscribed
465eventSubscribedNever = EventSubscribed
602 { eventSubscribedHeightRef = zeroRef
466 { eventSubscribedHeightRef = zeroRef
603− , eventSubscribedRetained = toAny ()
467+ , eventSubscribedRetained = ()
604#ifdef DEBUG_CYCLES
468#ifdef DEBUG_CYCLES
605 , eventSubscribedGetParents = return []
469 , eventSubscribedGetParents = return []
606 , eventSubscribedHasOwnHeightRef = False
470 , eventSubscribedHasOwnHeightRef = False
607 , eventSubscribedWhoCreated = return ["never"]
471 , eventSubscribedWhoCreated = return ["never"]
610−eventSubscribedNow :: EventSubscribed x
474+
611−eventSubscribedNow = EventSubscribed
475+eventSubscribedPush :: PushSubscribed x b a -> EventSubscribed x a
476+eventSubscribedPush !subscribed = EventSubscribed
612− { eventSubscribedHeightRef = zeroRef
477+ { eventSubscribedHeightRef = pushSubscribedHeight subscribed
613− , eventSubscribedRetained = toAny ()
478+ , eventSubscribedRetained = subscribed
614#ifdef DEBUG_CYCLES
479#ifdef DEBUG_CYCLES
615− , eventSubscribedGetParents = return []
480+ , eventSubscribedGetParents = return [Some.This $ _eventSubscription_subscribed $ pushSubscribedParent subscribed]
616 , eventSubscribedHasOwnHeightRef = False
481 , eventSubscribedHasOwnHeightRef = False
617− , eventSubscribedWhoCreated = return ["now"]
482+ , eventSubscribedWhoCreated = whoCreatedIORef $ pushSubscribedCachedSubscribed subscribed
486+eventSubscribedMerge :: MergeSubscribed x k -> EventSubscribed x a
487+eventSubscribedMerge !subscribed = EventSubscribed
488+ { eventSubscribedHeightRef = mergeSubscribedHeight subscribed
489+ , eventSubscribedRetained = subscribed
491+ , eventSubscribedGetParents = do
492+ ps <- readIORef $ mergeSubscribedParents subscribed
493+ return $ R.ffor (DMap.toList ps) $ \(_ :=> v) -> Some.This $ _eventSubscription_subscribed $ mergeSubscribedParentSubscription v
494+ , eventSubscribedHasOwnHeightRef = True
495+ , eventSubscribedWhoCreated = whoCreatedIORef $ mergeSubscribedCachedSubscribed subscribed
621−eventSubscribedFan :: FanSubscribed x k v -> EventSubscribed x
499+eventSubscribedFan :: FanSubscribed x k -> EventSubscribed x a
622eventSubscribedFan !subscribed = EventSubscribed
500eventSubscribedFan !subscribed = EventSubscribed
623 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
501 { eventSubscribedHeightRef = eventSubscribedHeightRef $ _eventSubscription_subscribed $ fanSubscribedParent subscribed
624− , eventSubscribedRetained = toAny subscribed
502+ , eventSubscribedRetained = subscribed
625#ifdef DEBUG_CYCLES
503#ifdef DEBUG_CYCLES
626− , eventSubscribedGetParents = return [_eventSubscription_subscribed $ fanSubscribedParent subscribed]
504+ , eventSubscribedGetParents = return [Some.This $ _eventSubscription_subscribed $ fanSubscribedParent subscribed]
627 , eventSubscribedHasOwnHeightRef = False
505 , eventSubscribedHasOwnHeightRef = False
628 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
506 , eventSubscribedWhoCreated = whoCreatedIORef $ fanSubscribedCachedSubscribed subscribed
632−eventSubscribedSwitch :: SwitchSubscribed x a -> EventSubscribed x
510+eventSubscribedSwitch :: SwitchSubscribed x a -> EventSubscribed x a
633eventSubscribedSwitch !subscribed = EventSubscribed
511eventSubscribedSwitch !subscribed = EventSubscribed
634 { eventSubscribedHeightRef = switchSubscribedHeight subscribed
512 { eventSubscribedHeightRef = switchSubscribedHeight subscribed
635− , eventSubscribedRetained = toAny subscribed
513+ , eventSubscribedRetained = subscribed
636#ifdef DEBUG_CYCLES
514#ifdef DEBUG_CYCLES
637 , eventSubscribedGetParents = do
515 , eventSubscribedGetParents = do
638 s <- readIORef $ switchSubscribedCurrentParent subscribed
516 s <- readIORef $ switchSubscribedCurrentParent subscribed
639− return [_eventSubscription_subscribed s]
517+ return [Some.This $ _eventSubscription_subscribed s]
640 , eventSubscribedHasOwnHeightRef = True
518 , eventSubscribedHasOwnHeightRef = True
641 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
519 , eventSubscribedWhoCreated = whoCreatedIORef $ switchSubscribedCachedSubscribed subscribed
645−eventSubscribedCoincidence :: CoincidenceSubscribed x a -> EventSubscribed x
523+eventSubscribedCoincidence :: CoincidenceSubscribed x a -> EventSubscribed x a
646eventSubscribedCoincidence !subscribed = EventSubscribed
524eventSubscribedCoincidence !subscribed = EventSubscribed
647 { eventSubscribedHeightRef = coincidenceSubscribedHeight subscribed
525 { eventSubscribedHeightRef = coincidenceSubscribedHeight subscribed
648− , eventSubscribedRetained = toAny subscribed
526+ , eventSubscribedRetained = subscribed
649#ifdef DEBUG_CYCLES
527#ifdef DEBUG_CYCLES
650 , eventSubscribedGetParents = do
528 , eventSubscribedGetParents = do
651 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
529 innerSubscription <- readIORef $ coincidenceSubscribedInnerParent subscribed
652− let outerParent = _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
530+ let outerParent = Some.This $ _eventSubscription_subscribed $ coincidenceSubscribedOuterParent subscribed
653− innerParents = maybeToList $ innerSubscription
531+ innerParents = maybeToList $ fmap Some.This innerSubscription
654 return $ outerParent : innerParents
532 return $ outerParent : innerParents
655 , eventSubscribedHasOwnHeightRef = True
533 , eventSubscribedHasOwnHeightRef = True
656 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
534 , eventSubscribedWhoCreated = whoCreatedIORef $ coincidenceSubscribedCachedSubscribed subscribed
660−getEventSubscribedHeight :: EventSubscribed x -> IO Height
538+getEventSubscribedHeight :: EventSubscribed x a -> IO Height
661getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
539getEventSubscribedHeight es = readIORef $ eventSubscribedHeightRef es
663#ifdef DEBUG_CYCLES
541#ifdef DEBUG_CYCLES
664−whoCreatedEventSubscribed :: EventSubscribed x -> IO [String]
542+whoCreatedEventSubscribed :: EventSubscribed x a -> IO [String]
665whoCreatedEventSubscribed = eventSubscribedWhoCreated
543whoCreatedEventSubscribed = eventSubscribedWhoCreated
667−walkInvalidHeightParents :: EventSubscribed x -> IO [EventSubscribed x]
545+walkInvalidHeightParents :: EventSubscribed x a -> IO [Some (EventSubscribed x)]
668walkInvalidHeightParents s0 = do
546walkInvalidHeightParents s0 = do
669− subscribers <- flip execStateT mempty $ ($ s0) $ fix $ \loop s -> do
547+ subscribers <- flip execStateT mempty $ ($ Some.This s0) $ fix $ \loop (Some.This s) -> do
670 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
548 h <- liftIO $ readIORef $ eventSubscribedHeightRef s
671 when (h == invalidHeight) $ do
549 when (h == invalidHeight) $ do
672 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
550 when (eventSubscribedHasOwnHeightRef s) $ liftIO $ writeIORef (eventSubscribedHeightRef s) $! invalidHeightBeingTraversed
673− modify (s :)
551+ modify (Some.This s :)
674 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
552 mapM_ loop =<< liftIO (eventSubscribedGetParents s)
675− forM_ subscribers $ \s -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
553+ forM_ subscribers $ \(Some.This s) -> writeIORef (eventSubscribedHeightRef s) $! invalidHeight
676 return subscribers
554 return subscribers
679{-# INLINE subscribeHoldEvent #-}
557{-# INLINE subscribeHoldEvent #-}
680−subscribeHoldEvent :: Hold x p -> Subscriber x p -> EventM x (EventSubscription x, Maybe p)
558+subscribeHoldEvent :: CanSubscribe x m => Hold x p -> Subscriber x p -> m (EventSubscription x p, Maybe p)
681subscribeHoldEvent = subscribeAndRead . holdEvent
559subscribeHoldEvent = subscribeAndRead . holdEvent
561+--------------------------------------------------------------------------------
563+--------------------------------------------------------------------------------
565+data EventSubscription x a = EventSubscription
566+ { _eventSubscription_ticket :: !(Maybe (WeakBagTicket (Subscriber x a)))
567+ , _eventSubscription_subscribed :: !(EventSubscribed x a)
570+unsubscribe :: EventSubscription x a -> IO ()
571+unsubscribe (EventSubscription msln _) = forM_ msln $ \sln -> WeakBag.remove sln
683--------------------------------------------------------------------------------
573--------------------------------------------------------------------------------
684-- Behavior
574-- Behavior
685--------------------------------------------------------------------------------
575--------------------------------------------------------------------------------
687newtype Behavior x a = Behavior { readBehaviorTracked :: BehaviorM x a }
577newtype Behavior x a = Behavior { readBehaviorTracked :: BehaviorM x a }
689−behaviorHold :: Hold x p -> Behavior x (PatchTarget p)
579+behaviorHold :: Hold x p -> Behavior x (R.PatchTarget p)
690behaviorHold !h = Behavior $ readHoldTracked h
580behaviorHold !h = Behavior $ readHoldTracked h
692behaviorHoldIdentity :: Hold x (Identity a) -> Behavior x a
582behaviorHoldIdentity :: Hold x (Identity a) -> Behavior x a
@@ -700,7 +590,7 @@ behaviorPull !p = Behavior $ do
700 val <- liftIO $ readIORef $ pullValue p
590 val <- liftIO $ readIORef $ pullValue p
701 case val of
591 case val of
702 Just subscribed -> do
592 Just subscribed -> do
703− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
593+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
704 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
594 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (pullSubscribedInvalidators subscribed) (wi:))
705 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
595 liftIO $ touch $ pullSubscribedOwnInvalidator subscribed
706 return $ pullSubscribedValue subscribed
596 return $ pullSubscribedValue subscribed
@@ -709,7 +599,7 @@ behaviorPull !p = Behavior $ do
709 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
599 wi <- liftIO $ mkWeakPtrWithDebug i "InvalidatorPull"
710 parentsRef <- liftIO $ newIORef []
600 parentsRef <- liftIO $ newIORef []
711 holdInits <- askBehaviorHoldInits
601 holdInits <- askBehaviorHoldInits
712− a <- liftIO $ runReaderIO (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
602+ a <- liftIO $ runReaderT (unBehaviorM $ pullCompute p) (Just (wi, parentsRef), holdInits)
713 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
603 invsRef <- liftIO . newIORef . maybeToList =<< askInvalidator
714 parents <- liftIO $ readIORef parentsRef
604 parents <- liftIO $ readIORef parentsRef
715 let subscribed = PullSubscribed
605 let subscribed = PullSubscribed
@@ -719,22 +609,22 @@ behaviorPull !p = Behavior $ do
719 , pullSubscribedParents = parents
609 , pullSubscribedParents = parents
721 liftIO $ writeIORef (pullValue p) $ Just subscribed
611 liftIO $ writeIORef (pullValue p) $ Just subscribed
722− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedPull subscribed)) :))
612+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedPull subscribed) :))
725−behaviorDyn :: Patch p => Dyn x p -> Behavior x (PatchTarget p)
615+behaviorDyn :: R.Patch p => Dyn x p -> Behavior x (R.PatchTarget p)
726behaviorDyn !d = Behavior $ readHoldTracked =<< getDynHold d
616behaviorDyn !d = Behavior $ readHoldTracked =<< getDynHold d
728{-# INLINE readHoldTracked #-}
618{-# INLINE readHoldTracked #-}
729−readHoldTracked :: Hold x p -> BehaviorM x (PatchTarget p)
619+readHoldTracked :: Hold x p -> BehaviorM x (R.PatchTarget p)
730readHoldTracked h = do
620readHoldTracked h = do
731 result <- liftIO $ readIORef $ holdValue h
621 result <- liftIO $ readIORef $ holdValue h
732 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
622 askInvalidator >>= mapM_ (\wi -> liftIO $ modifyIORef' (holdInvalidators h) (wi:))
733− askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (Some (BehaviorSubscribedHold h)) :))
623+ askParentsRef >>= mapM_ (\r -> liftIO $ modifyIORef' r (SomeBehaviorSubscribed (BehaviorSubscribedHold h) :))
734− liftIO $ touch h -- Otherwise, if this gets inlined enough, the hold's parent reference may get collected
735 return result
624 return result
626+{-# SPECIALIZE readBehaviorUntracked :: Behavior x a -> BehaviorM x a #-}
737−{-# INLINABLE readBehaviorUntracked #-}
627+{-# SPECIALIZE readBehaviorUntracked :: Behavior x a -> EventM x a #-}
738readBehaviorUntracked :: Defer (SomeHoldInit x) m => Behavior x a -> m a
628readBehaviorUntracked :: Defer (SomeHoldInit x) m => Behavior x a -> m a
739readBehaviorUntracked b = do
629readBehaviorUntracked b = do
740 holdInits <- getDeferralQueue
630 holdInits <- getDeferralQueue
@@ -744,108 +634,69 @@ readBehaviorUntracked b = do
744-- Dynamic
634-- Dynamic
745--------------------------------------------------------------------------------
635--------------------------------------------------------------------------------
747−type DynamicS x p = Dynamic x (PatchTarget p) p
749−data Dynamic x target p = Dynamic
637+data Dynamic x p = Dynamic
750− { dynamicCurrent :: !(Behavior x target)
638+ { dynamicCurrent :: !(Behavior x (R.PatchTarget p))
751− , dynamicUpdated :: Event x p -- This must be lazy; see the comment on holdEvent --TODO: Would this let us eliminate `Dyn`?
639+ , dynamicUpdated :: !(Event x p)
754−deriving instance (HasSpiderTimeline x) => Functor (Dynamic x target)
759−dynamicHold :: Hold x p -> DynamicS x p
642+dynamicHold :: Hold x p -> Dynamic x p
760dynamicHold !h = Dynamic
643dynamicHold !h = Dynamic
761 { dynamicCurrent = behaviorHold h
644 { dynamicCurrent = behaviorHold h
762 , dynamicUpdated = eventHold h
645 , dynamicUpdated = eventHold h
765−dynamicHoldIdentity :: Hold x (Identity a) -> DynamicS x (Identity a)
648+dynamicHoldIdentity :: Hold x (Identity a) -> Dynamic x (Identity a)
766dynamicHoldIdentity = dynamicHold
649dynamicHoldIdentity = dynamicHold
768−dynamicConst :: PatchTarget p -> DynamicS x p
651+dynamicConst :: R.PatchTarget p -> Dynamic x p
769dynamicConst !a = Dynamic
652dynamicConst !a = Dynamic
770 { dynamicCurrent = behaviorConst a
653 { dynamicCurrent = behaviorConst a
771 , dynamicUpdated = eventNever
654 , dynamicUpdated = eventNever
774−dynamicDyn :: (HasSpiderTimeline x, Patch p) => Dyn x p -> DynamicS x p
657+dynamicDyn :: R.Patch p => Dyn x p -> Dynamic x p
775dynamicDyn !d = Dynamic
658dynamicDyn !d = Dynamic
776 { dynamicCurrent = behaviorDyn d
659 { dynamicCurrent = behaviorDyn d
777 , dynamicUpdated = eventDyn d
660 , dynamicUpdated = eventDyn d
780−dynamicDynIdentity :: HasSpiderTimeline x => Dyn x (Identity a) -> DynamicS x (Identity a)
663+dynamicDynIdentity :: Dyn x (Identity a) -> Dynamic x (Identity a)
781dynamicDynIdentity = dynamicDyn
664dynamicDynIdentity = dynamicDyn
783--------------------------------------------------------------------------------
666--------------------------------------------------------------------------------
784-- Combinators
667-- Combinators
785--------------------------------------------------------------------------------
668--------------------------------------------------------------------------------
670+--TODO: Figure out why certain things are not 'representational', then make them
671+--representational so we can use coerce
787--type role Hold representational
673--type role Hold representational
788data Hold x p
674data Hold x p
789− = Hold { holdValue :: !(IORef (PatchTarget p))
675+ = Hold { holdValue :: !(IORef (R.PatchTarget p))
790 , holdInvalidators :: !(IORef [Weak (Invalidator x)])
676 , holdInvalidators :: !(IORef [Weak (Invalidator x)])
791 , holdEvent :: Event x p -- This must be lazy, or holds cannot be defined before their input Events
677 , holdEvent :: Event x p -- This must be lazy, or holds cannot be defined before their input Events
792− , holdParent :: !(IORef (Maybe (EventSubscription x))) -- Keeps its parent alive (will be undefined until the hold is initialized) --TODO: Probably shouldn't be an IORef
678+ , holdParent :: !(IORef (Maybe (EventSubscription x p))) -- Keeps its parent alive (will be undefined until the hold is initialized) --TODO: Probably shouldn't be an IORef
793#ifdef DEBUG_NODEIDS
679#ifdef DEBUG_NODEIDS
794 , holdNodeId :: Int
680 , holdNodeId :: Int
798−-- | A statically allocated 'SpiderTimeline'
801−{-# NOINLINE globalSpiderTimelineEnv #-}
802−globalSpiderTimelineEnv :: SpiderTimelineEnv Global
803−globalSpiderTimelineEnv = unsafePerformIO unsafeNewSpiderTimelineEnv
805−-- | Stores all global data relevant to a particular Spider timeline; only one
806−-- value should exist for each type @x@
807−newtype SpiderTimelineEnv x = STE {unSTE :: SpiderTimelineEnv' x}
808−-- We implement SpiderTimelineEnv with a newtype wrapper so
809−-- we can get the coercions we want safely.
810−type role SpiderTimelineEnv nominal
812−data SpiderTimelineEnv' x = SpiderTimelineEnv
813− { _spiderTimeline_lock :: {-# UNPACK #-} !(MVar ())
814− , _spiderTimeline_eventEnv :: {-# UNPACK #-} !(EventEnv x)
816− , _spiderTimeline_depth :: {-# UNPACK #-} !(IORef Int)
819−type role SpiderTimelineEnv' phantom
821−instance Eq (SpiderTimelineEnv x) where
822− _ == _ = True -- Since only one exists of each type
824−instance GEq SpiderTimelineEnv where
825− a `geq` b = if _spiderTimeline_lock (unSTE a) == _spiderTimeline_lock (unSTE b)
826− then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimelineEnv can't have two different 'x' arguments
829data EventEnv x
684data EventEnv x
685+ = EventEnv { eventEnvSpiderTimeline :: !(SpiderTimeline x)
830− = EventEnv { eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
686+ , eventEnvAssignments :: !(IORef [SomeAssignment x]) -- Needed for Subscribe
831 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
687 , eventEnvHoldInits :: !(IORef [SomeHoldInit x]) -- Needed for Subscribe
832− , eventEnvDynInits :: !(IORef [SomeDynInit x])
833 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
688 , eventEnvMergeUpdates :: !(IORef [SomeMergeUpdate x])
834 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
689 , eventEnvMergeInits :: !(IORef [SomeMergeInit x]) -- Needed for Subscribe
835− , eventEnvClears :: !(IORef [Some Clear]) -- Needed for Subscribe
690+ , eventEnvClears :: !(IORef [SomeClear]) -- Needed for Subscribe
836− , eventEnvIntClears :: !(IORef [Some IntClear])
837− , eventEnvRootClears :: !(IORef [Some RootClear])
691+ , eventEnvRootClears :: !(IORef [SomeRootClear])
838 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
692 , eventEnvCurrentHeight :: !(IORef Height) -- Needed for Subscribe
839 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
693 , eventEnvResetCoincidences :: !(IORef [SomeResetCoincidence x]) -- Needed for Subscribe
840− , eventEnvDelayedMerges :: !(IORef (IntMap [EventM x ()]))
694+ , eventEnvDelayedMerges :: !(IORef (IntMap [DelayedMerge x]))
843{-# INLINE runEventM #-}
697{-# INLINE runEventM #-}
844−runEventM :: EventM x a -> IO a
698+runEventM :: EventM x a -> EventEnv x -> IO a
845−runEventM = unEventM
699+runEventM = runReaderT . unEventM
847−asksEventEnv :: forall x a. HasSpiderTimeline x => (EventEnv x -> a) -> EventM x a
848−asksEventEnv f = return $ f $ _spiderTimeline_eventEnv (unSTE (spiderTimeline :: SpiderTimelineEnv x))
850class MonadIO m => Defer a m where
701class MonadIO m => Defer a m where
851 getDeferralQueue :: m (IORef [a])
702 getDeferralQueue :: m (IORef [a])
@@ -856,87 +707,81 @@ defer a = do
856 q <- getDeferralQueue
707 q <- getDeferralQueue
857 liftIO $ modifyIORef' q (a:)
708 liftIO $ modifyIORef' q (a:)
859−instance HasSpiderTimeline x => Defer (SomeAssignment x) (EventM x) where
710+instance Defer (SomeAssignment x) (EventM x) where
860− {-# INLINE getDeferralQueue #-}
861− getDeferralQueue = asksEventEnv eventEnvAssignments
863−instance HasSpiderTimeline x => Defer (SomeHoldInit x) (EventM x) where
864 {-# INLINE getDeferralQueue #-}
711 {-# INLINE getDeferralQueue #-}
865− getDeferralQueue = asksEventEnv eventEnvHoldInits
712+ getDeferralQueue = EventM $ asks eventEnvAssignments
867−instance HasSpiderTimeline x => Defer (SomeDynInit x) (EventM x) where
714+instance Defer (SomeHoldInit x) (EventM x) where
868 {-# INLINE getDeferralQueue #-}
715 {-# INLINE getDeferralQueue #-}
869− getDeferralQueue = asksEventEnv eventEnvDynInits
716+ getDeferralQueue = EventM $ asks eventEnvHoldInits
871instance Defer (SomeHoldInit x) (BehaviorM x) where
718instance Defer (SomeHoldInit x) (BehaviorM x) where
872 {-# INLINE getDeferralQueue #-}
719 {-# INLINE getDeferralQueue #-}
873 getDeferralQueue = BehaviorM $ asks snd
720 getDeferralQueue = BehaviorM $ asks snd
875−instance HasSpiderTimeline x => Defer (SomeMergeUpdate x) (EventM x) where
722+instance Defer (SomeMergeUpdate x) (EventM x) where
876 {-# INLINE getDeferralQueue #-}
723 {-# INLINE getDeferralQueue #-}
877− getDeferralQueue = asksEventEnv eventEnvMergeUpdates
724+ getDeferralQueue = EventM $ asks eventEnvMergeUpdates
879−instance HasSpiderTimeline x => Defer (SomeMergeInit x) (EventM x) where
726+instance Defer (SomeMergeInit x) (EventM x) where
880 {-# INLINE getDeferralQueue #-}
727 {-# INLINE getDeferralQueue #-}
881− getDeferralQueue = asksEventEnv eventEnvMergeInits
728+ getDeferralQueue = EventM $ asks eventEnvMergeInits
883−class HasSpiderTimeline x => HasCurrentHeight x m | m -> x where
730+class HasCurrentHeight x m | m -> x where
884 getCurrentHeight :: m Height
731 getCurrentHeight :: m Height
885− scheduleMerge :: Height -> EventM x () -> m ()
732+ scheduleMerge :: Height -> MergeSubscribed x a -> m ()
887−instance HasSpiderTimeline x => HasCurrentHeight x (EventM x) where
734+instance HasCurrentHeight x (EventM x) where
888 {-# INLINE getCurrentHeight #-}
735 {-# INLINE getCurrentHeight #-}
889− getCurrentHeight = do
736+ getCurrentHeight = EventM $ do
890− heightRef <- asksEventEnv eventEnvCurrentHeight
737+ heightRef <- asks eventEnvCurrentHeight
891 liftIO $ readIORef heightRef
738 liftIO $ readIORef heightRef
892 {-# INLINE scheduleMerge #-}
739 {-# INLINE scheduleMerge #-}
893− scheduleMerge height subscribed = do
740+ scheduleMerge height subscribed = EventM $ do
894− delayedRef <- asksEventEnv eventEnvDelayedMerges
741+ delayedRef <- asks eventEnvDelayedMerges
895− liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [subscribed]
742+ liftIO $ modifyIORef' delayedRef $ IntMap.insertWith (++) (unHeight height) [DelayedMerge subscribed]
744+class HasSpiderTimeline x m | m -> x where
745+ -- | Retrieve the current SpiderTimeline
746+ askSpiderTimeline :: m (SpiderTimeline x)
897−class HasSpiderTimeline x where
748+instance HasSpiderTimeline x (EventM x) where
898− -- | Retrieve the current SpiderTimelineEnv
749+ {-# INLINE askSpiderTimeline #-}
899− spiderTimeline :: SpiderTimelineEnv x
750+ askSpiderTimeline = EventM $ asks eventEnvSpiderTimeline
901−instance HasSpiderTimeline Global where
752+instance HasSpiderTimeline x (SpiderHost x) where
902− spiderTimeline = globalSpiderTimelineEnv
753+ {-# INLINE askSpiderTimeline #-}
754+ askSpiderTimeline = SpiderHost ask
904−putCurrentHeight :: HasSpiderTimeline x => Height -> EventM x ()
756+putCurrentHeight :: Height -> EventM x ()
905−putCurrentHeight h = do
757+putCurrentHeight h = EventM $ do
906− heightRef <- asksEventEnv eventEnvCurrentHeight
758+ heightRef <- asks eventEnvCurrentHeight
907 liftIO $ writeIORef heightRef $! h
759 liftIO $ writeIORef heightRef $! h
909−instance HasSpiderTimeline x => Defer (Some Clear) (EventM x) where
761+instance Defer SomeClear (EventM x) where
910 {-# INLINE getDeferralQueue #-}
762 {-# INLINE getDeferralQueue #-}
911− getDeferralQueue = asksEventEnv eventEnvClears
763+ getDeferralQueue = EventM $ asks eventEnvClears
913{-# INLINE scheduleClear #-}
765{-# INLINE scheduleClear #-}
914−scheduleClear :: Defer (Some Clear) m => IORef (Maybe a) -> m ()
766+scheduleClear :: Defer SomeClear m => IORef (Maybe a) -> m ()
915−scheduleClear r = defer $ Some $ Clear r
767+scheduleClear r = defer $ SomeClear r
917−instance HasSpiderTimeline x => Defer (Some IntClear) (EventM x) where
769+instance Defer SomeRootClear (EventM x) where
918 {-# INLINE getDeferralQueue #-}
770 {-# INLINE getDeferralQueue #-}
919− getDeferralQueue = asksEventEnv eventEnvIntClears
921−{-# INLINE scheduleIntClear #-}
922−scheduleIntClear :: Defer (Some IntClear) m => IORef (IntMap a) -> m ()
923−scheduleIntClear r = defer $ Some $ IntClear r
925−instance HasSpiderTimeline x => Defer (Some RootClear) (EventM x) where
926− {-# INLINE getDeferralQueue #-}
927− getDeferralQueue = asksEventEnv eventEnvRootClears
771+ getDeferralQueue = EventM $ asks eventEnvRootClears
929{-# INLINE scheduleRootClear #-}
773{-# INLINE scheduleRootClear #-}
930−scheduleRootClear :: Defer (Some RootClear) m => IORef (DMap k Identity) -> m ()
774+scheduleRootClear :: Defer SomeRootClear m => IORef (DMap k Identity) -> m ()
931−scheduleRootClear r = defer $ Some $ RootClear r
775+scheduleRootClear r = defer $ SomeRootClear r
933−instance HasSpiderTimeline x => Defer (SomeResetCoincidence x) (EventM x) where
777+instance Defer (SomeResetCoincidence x) (EventM x) where
934 {-# INLINE getDeferralQueue #-}
778 {-# INLINE getDeferralQueue #-}
935− getDeferralQueue = asksEventEnv eventEnvResetCoincidences
779+ getDeferralQueue = EventM $ asks eventEnvResetCoincidences
937-- Note: hold cannot examine its event until after the phase is over
781-- Note: hold cannot examine its event until after the phase is over
938−{-# INLINE [1] hold #-}
782+{-# SPECIALIZE hold :: R.Patch p => R.PatchTarget p -> Event x p -> EventM x (Hold x p) #-}
783+{-# SPECIALIZE hold :: R.Patch p => R.PatchTarget p -> Event x p -> ComputeM x (Hold x p) #-}
939−hold :: (Patch p, Defer (SomeHoldInit x) m) => PatchTarget p -> Event x p -> m (Hold x p)
784+hold :: (R.Patch p, Defer (SomeHoldInit x) m) => R.PatchTarget p -> Event x p -> m (Hold x p)
940hold v0 e = do
785hold v0 e = do
941 valRef <- liftIO $ newIORef v0
786 valRef <- liftIO $ newIORef v0
942 invsRef <- liftIO $ newIORef []
787 invsRef <- liftIO $ newIORef []
@@ -957,7 +802,7 @@ hold v0 e = do
959{-# INLINE getHoldEventSubscription #-}
804{-# INLINE getHoldEventSubscription #-}
960−getHoldEventSubscription :: forall p x. (HasSpiderTimeline x, Patch p) => Hold x p -> EventM x (EventSubscription x)
805+getHoldEventSubscription :: forall m p x. (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer SomeClear m, R.Patch p, HasCurrentHeight x m, Defer (SomeMergeInit x) m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x m, m ~ EventM x) => Hold x p -> m (EventSubscription x p)
961getHoldEventSubscription h = do
806getHoldEventSubscription h = do
962 ep <- liftIO $ readIORef $ holdParent h
807 ep <- liftIO $ readIORef $ holdParent h
963 case ep of
808 case ep of
@@ -971,7 +816,7 @@ getHoldEventSubscription h = do
971 Nothing -> return ()
816 Nothing -> return ()
972 Just o -> do
817 Just o -> do
973 old <- liftIO $ readIORef $ holdValue h
818 old <- liftIO $ readIORef $ holdValue h
974− case apply o old of
819+ case R.apply o old of
975 Nothing -> return ()
820 Nothing -> return ()
976 Just new -> do
821 Just new -> do
977 -- Need to evaluate these so that we don't retain the Hold itself
822 -- Need to evaluate these so that we don't retain the Hold itself
@@ -983,9 +828,9 @@ getHoldEventSubscription h = do
984type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
829type BehaviorEnv x = (Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]), IORef [SomeHoldInit x])
831+--type role BehaviorM representational
986-- BehaviorM can sample behaviors
832-- BehaviorM can sample behaviors
987−newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderIO (BehaviorEnv x) a }
833+newtype BehaviorM x a = BehaviorM { unBehaviorM :: ReaderT (BehaviorEnv x) IO a } deriving (Functor, Applicative, MonadIO, MonadFix)
988− deriving (Functor, Applicative, MonadIO, MonadFix, MonadReader (BehaviorEnv x))
990instance Monad (BehaviorM x) where
835instance Monad (BehaviorM x) where
991 {-# INLINE (>>=) #-}
836 {-# INLINE (>>=) #-}
@@ -994,16 +839,14 @@ instance Monad (BehaviorM x) where
994 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
839 BehaviorM x >> BehaviorM y = BehaviorM $ x >> y
995 {-# INLINE return #-}
840 {-# INLINE return #-}
996 return x = BehaviorM $ return x
841 return x = BehaviorM $ return x
997−#if !MIN_VERSION_base(4,13,0)
998 {-# INLINE fail #-}
842 {-# INLINE fail #-}
999 fail s = BehaviorM $ fail s
843 fail s = BehaviorM $ fail s
1002data BehaviorSubscribed x a
845data BehaviorSubscribed x a
1003 = forall p. BehaviorSubscribedHold (Hold x p)
846 = forall p. BehaviorSubscribedHold (Hold x p)
1004 | BehaviorSubscribedPull (PullSubscribed x a)
847 | BehaviorSubscribedPull (PullSubscribed x a)
1006−newtype SomeBehaviorSubscribed x = SomeBehaviorSubscribed (Some (BehaviorSubscribed x))
849+data SomeBehaviorSubscribed x = forall a. SomeBehaviorSubscribed (BehaviorSubscribed x a)
1008--type role PullSubscribed representational
851--type role PullSubscribed representational
1009data PullSubscribed x a
852data PullSubscribed x a
@@ -1038,33 +881,55 @@ data RootSubscribed x a = forall k. GCompare k => RootSubscribed
1041−data Root x k
884+data Root x (k :: * -> *)
1042 = Root { rootOccurrence :: !(IORef (DMap k Identity)) -- The currently-firing occurrence of this event
885 = Root { rootOccurrence :: !(IORef (DMap k Identity)) -- The currently-firing occurrence of this event
1043 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
886 , rootSubscribed :: !(IORef (DMap k (RootSubscribed x)))
1044 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
887 , rootInit :: !(forall a. k a -> RootTrigger x a -> IO (IO ()))
1047−data SomeHoldInit x = forall p. Patch p => SomeHoldInit !(Hold x p)
890+data SomeHoldInit x = forall p. R.Patch p => SomeHoldInit !(Hold x p)
1049−data SomeDynInit x = forall p. Patch p => SomeDynInit !(Dyn x p)
892+data SomeMergeUpdate x = forall k. GCompare k => SomeMergeUpdate (R.PatchDMap k (Event x)) (MergeSubscribed x k)
1051−data SomeMergeUpdate x = SomeMergeUpdate
894+data SomeMergeInit x = forall k. GCompare k => SomeMergeInit !(MergeSubscribed x k) !(Event x (R.PatchDMap k (Event x)))
1052− { _someMergeUpdate_update :: !(EventM x [EventSubscription x])
1053− , _someMergeUpdate_invalidateHeight :: !(IO ())
1054− , _someMergeUpdate_recalculateHeight :: !(IO ())
1057−newtype SomeMergeInit x = SomeMergeInit { unSomeMergeInit :: EventM x () }
896+data SomeEventSubscription x = forall a. SomeEventSubscription (EventSubscription x a)
1059-- EventM can do everything BehaviorM can, plus create holds
898-- EventM can do everything BehaviorM can, plus create holds
1060−newtype EventM x a = EventM { unEventM :: IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix, MonadException, MonadAsyncException)
899+newtype EventM x (a :: *) = EventM { unEventM :: ReaderT (EventEnv x) IO a } deriving (Functor, Applicative, Monad, MonadIO, MonadFix, MonadException, MonadAsyncException) -- The environment should be Nothing if we are not in a frame, and Just if we are - in which case it is a list of assignments to be done after the frame is over
901+data PushSubscribed x a b
902+ = PushSubscribed { pushSubscribedCachedSubscribed :: !(IORef (Maybe (PushSubscribed x a b)))
903+ , pushSubscribedOccurrence :: !(IORef (Maybe b)) -- If the current height is less than our height, this should always be Nothing; during our height, this will get filled in at some point, always before our children are notified; after our height, this will be filled in with the correct value (Nothing if we are not firing, Just if we are)
904+ , pushSubscribedHeight :: !(IORef Height)
905+ , pushSubscribedSubscribers :: !(WeakBag (Subscriber x b))
906+ , pushSubscribedSelf :: !(Subscriber x a) -- Hold this in memory to ensure our WeakReferences don't die --TODO: Probably unneeded now
907+ , pushSubscribedWeakSelf :: !(IORef (Weak (PushSubscribed x a b)))
908+ , pushSubscribedParent :: !(EventSubscription x a)
910+ , pushSubscribedNodeId :: Int
1062−newtype MergeSubscribedParent x a = MergeSubscribedParent { unMergeSubscribedParent :: EventSubscription x }
914+newtype ComputeM x a = ComputeM (ReaderT (IORef [SomeHoldInit x]) IO a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
1064−data MergeSubscribedParentWithMove x k a = MergeSubscribedParentWithMove
916+instance Defer (SomeHoldInit x) (ComputeM x) where
1065− { _mergeSubscribedParentWithMove_subscription :: !(EventSubscription x)
917+ getDeferralQueue = ComputeM ask
1066− , _mergeSubscribedParentWithMove_key :: !(IORef (k a))
918+
919+{-# SPECIALIZE runComputeM :: ComputeM x a -> EventM x a #-}
920+runComputeM :: Defer (SomeHoldInit x) m => ComputeM x a -> m a
921+runComputeM (ComputeM a) = liftIO . runReaderT a =<< getDeferralQueue
924+ = Push { pushCompute :: !(a -> ComputeM x (Maybe b)) -- Compute the current firing value; assumes that its parent has been computed --TODO: This only uses Defer SomeHoldInit EventM; perhaps only the hold init queue should be passed in (also, perhaps those hold inits can be accelerated - can there be a loop we would need to worry about?)
925+ , pushParent :: !(Event x a)
926+ , pushSubscribed :: !(IORef (Maybe (PushSubscribed x a b))) --TODO: Can we replace this with an unsafePerformIO thunk?
929+data MergeSubscribedParent (x :: *) k a = MergeSubscribedParent !(EventSubscription x a) !(Subscriber x a)
931+mergeSubscribedParentSubscription :: MergeSubscribedParent x k a -> EventSubscription x a
932+mergeSubscribedParentSubscription (MergeSubscribedParent es _) = es
1069data HeightBag = HeightBag
934data HeightBag = HeightBag
1070 { _heightBag_size :: {-# UNPACK #-} !Int
935 { _heightBag_size :: {-# UNPACK #-} !Int
@@ -1082,8 +947,7 @@ heightBagFromList :: [Height] -> HeightBag
1082heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
947heightBagFromList heights = heightBagVerify $ foldl' (flip heightBagAdd) heightBagEmpty heights
1084heightBagAdd :: Height -> HeightBag -> HeightBag
949heightBagAdd :: Height -> HeightBag -> HeightBag
1085−heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $
950+heightBagAdd (Height h) (HeightBag s c) = heightBagVerify $ HeightBag (succ s) $ IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
1086− IntMap.insertWithKey (\_ _ old -> succ old) h 0 c
1088heightBagRemove :: Height -> HeightBag -> HeightBag
952heightBagRemove :: Height -> HeightBag -> HeightBag
1089heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.lookup h c of
953heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.lookup h c of
@@ -1092,13 +956,6 @@ heightBagRemove (Height h) b@(HeightBag s c) = heightBagVerify $ case IntMap.loo
1092 0 -> IntMap.delete h c
956 0 -> IntMap.delete h c
1093 _ -> IntMap.insert h (pred old) c
957 _ -> IntMap.insert h (pred old) c
1095−heightBagRemoveMaybe :: Height -> HeightBag -> Maybe HeightBag
1096−heightBagRemoveMaybe (Height h) b@(HeightBag s c) = heightBagVerify . removed <$> IntMap.lookup h c where
1097− removed old = HeightBag (pred s) $ case old of
1098− 0 -> IntMap.delete h c
1099− _ -> IntMap.insert h (pred old) c
1102heightBagMax :: HeightBag -> Height
959heightBagMax :: HeightBag -> Height
1103heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
960heightBagMax (HeightBag _ c) = case IntMap.maxViewWithKey c of
1104 Just ((h, _), _) -> Height h
961 Just ((h, _), _) -> Height h
@@ -1116,25 +973,46 @@ heightBagVerify b@(HeightBag s c) = if
1116heightBagVerify = id
973heightBagVerify = id
976+data MergeSubscribed x k
977+ = MergeSubscribed { mergeSubscribedCachedSubscribed :: !(IORef (Maybe (MergeSubscribed x k))) -- From the original merge
978+ , mergeSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
979+ , mergeSubscribedAccum :: !(IORef (DMap k Identity)) -- This will accumulate occurrences until our height is reached, at which point it will be transferred to mergeSubscribedOccurrence
980+ , mergeSubscribedHeight :: !(IORef Height)
981+ , mergeSubscribedHeightBag :: !(IORef HeightBag)
982+ , mergeSubscribedSubscribers :: !(WeakBag (Subscriber x (DMap k Identity)))
983+ , mergeSubscribedChange :: !(IORef (Subscriber x (R.PatchDMap k (Event x)), EventSubscribed x (R.PatchDMap k (Event x))))
984+ , mergeSubscribedParents :: !(IORef (DMap k (MergeSubscribedParent x k)))
985+ , mergeSubscribedWeakSelf :: !(IORef (Weak (MergeSubscribed x k)))
987+ , mergeSubscribedNodeId :: Int
991+--TODO: DMap sucks; we should really write something better (with a functor for the value as well as the key)
993+ = Merge { mergeParents :: !(Dynamic x (R.PatchDMap k (Event x)))
994+ , mergeSubscribed :: !(IORef (Maybe (MergeSubscribed x k)))
1119−data FanSubscribedChildren x k v a = FanSubscribedChildren
997+data FanSubscribedChildren (x :: *) k a = FanSubscribedChildren
1120− { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x (v a)))
998+ { _fanSubscribedChildren_list :: !(WeakBag (Subscriber x a))
1121− , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k v)
999+ , _fanSubscribedChildren_self :: {-# NOUNPACK #-} !(k a, FanSubscribed x k)
1122− , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k v)))
1000+ , _fanSubscribedChildren_weakSelf :: !(IORef (Weak (k a, FanSubscribed x k)))
1125−data FanSubscribed x k v
1003+data FanSubscribed (x :: *) k
1126− = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1004+ = FanSubscribed { fanSubscribedCachedSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1127− , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k v)))
1005+ , fanSubscribedOccurrence :: !(IORef (Maybe (DMap k Identity)))
1128− , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k v))) -- This DMap should never be empty
1006+ , fanSubscribedSubscribers :: !(IORef (DMap k (FanSubscribedChildren x k))) -- This DMap should never be empty
1129− , fanSubscribedParent :: !(EventSubscription x)
1007+ , fanSubscribedParent :: !(EventSubscription x (DMap k Identity))
1130#ifdef DEBUG_NODEIDS
1008#ifdef DEBUG_NODEIDS
1131 , fanSubscribedNodeId :: Int
1009 , fanSubscribedNodeId :: Int
1135−data Fan x k v
1013+data Fan x k
1136− = Fan { fanParent :: !(Event x (DMap k v))
1014+ = Fan { fanParent :: !(Event x (DMap k Identity))
1137− , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k v)))
1015+ , fanSubscribed :: !(IORef (Maybe (FanSubscribed x k)))
1140data SwitchSubscribed x a
1018data SwitchSubscribed x a
@@ -1146,7 +1024,7 @@ data SwitchSubscribed x a
1146 , switchSubscribedOwnWeakInvalidator :: !(IORef (Weak (Invalidator x)))
1024 , switchSubscribedOwnWeakInvalidator :: !(IORef (Weak (Invalidator x)))
1147 , switchSubscribedBehaviorParents :: !(IORef [SomeBehaviorSubscribed x])
1025 , switchSubscribedBehaviorParents :: !(IORef [SomeBehaviorSubscribed x])
1148 , switchSubscribedParent :: !(Behavior x (Event x a))
1026 , switchSubscribedParent :: !(Behavior x (Event x a))
1149− , switchSubscribedCurrentParent :: !(IORef (EventSubscription x))
1027+ , switchSubscribedCurrentParent :: !(IORef (EventSubscription x a))
1150 , switchSubscribedWeakSelf :: !(IORef (Weak (SwitchSubscribed x a)))
1028 , switchSubscribedWeakSelf :: !(IORef (Weak (SwitchSubscribed x a)))
1151#ifdef DEBUG_NODEIDS
1029#ifdef DEBUG_NODEIDS
1152 , switchSubscribedNodeId :: Int
1030 , switchSubscribedNodeId :: Int
@@ -1158,17 +1036,15 @@ data Switch x a
1158 , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
1036 , switchSubscribed :: !(IORef (Maybe (SwitchSubscribed x a)))
1161−#ifdef USE_TEMPLATE_HASKELL
1162{-# ANN CoincidenceSubscribed "HLint: ignore Redundant bracket" #-}
1039{-# ANN CoincidenceSubscribed "HLint: ignore Redundant bracket" #-}
1164data CoincidenceSubscribed x a
1040data CoincidenceSubscribed x a
1165 = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
1041 = CoincidenceSubscribed { coincidenceSubscribedCachedSubscribed :: !(IORef (Maybe (CoincidenceSubscribed x a)))
1166 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
1042 , coincidenceSubscribedOccurrence :: !(IORef (Maybe a))
1167 , coincidenceSubscribedSubscribers :: !(WeakBag (Subscriber x a))
1043 , coincidenceSubscribedSubscribers :: !(WeakBag (Subscriber x a))
1168 , coincidenceSubscribedHeight :: !(IORef Height)
1044 , coincidenceSubscribedHeight :: !(IORef Height)
1169 , coincidenceSubscribedOuter :: {-# NOUNPACK #-} (Subscriber x (Event x a))
1045 , coincidenceSubscribedOuter :: {-# NOUNPACK #-} (Subscriber x (Event x a))
1170− , coincidenceSubscribedOuterParent :: !(EventSubscription x)
1046+ , coincidenceSubscribedOuterParent :: !(EventSubscription x (Event x a))
1171− , coincidenceSubscribedInnerParent :: !(IORef (Maybe (EventSubscribed x)))
1047+ , coincidenceSubscribedInnerParent :: !(IORef (Maybe (EventSubscribed x a)))
1172 , coincidenceSubscribedWeakSelf :: !(IORef (Weak (CoincidenceSubscribed x a)))
1048 , coincidenceSubscribedWeakSelf :: !(IORef (Weak (CoincidenceSubscribed x a)))
1173#ifdef DEBUG_NODEIDS
1049#ifdef DEBUG_NODEIDS
1174 , coincidenceSubscribedNodeId :: Int
1050 , coincidenceSubscribedNodeId :: Int
@@ -1188,35 +1064,20 @@ newInvalidatorSwitch subd = return $! InvalidatorSwitch subd
1188newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1064newInvalidatorPull :: Pull x a -> IO (Invalidator x)
1189newInvalidatorPull p = return $! InvalidatorPull p
1065newInvalidatorPull p = return $! InvalidatorPull p
1191−instance HasSpiderTimeline x => Filterable (Event x) where
1067+instance R.FunctorMaybe (Event x) where
1192− mapMaybe f = push $ return . f
1068+ fmapMaybe f = push $ return . f
1194−instance HasSpiderTimeline x => Align (Event x) where
1070+instance Align (Event x) where
1195 nil = eventNever
1071 nil = eventNever
1196−#if MIN_VERSION_these(0, 8, 0)
1197−instance HasSpiderTimeline x => Semialign (Event x) where
1199− align ea eb = mapMaybe dmapToThese $ mergeG coerce $ dynamicConst $
1072+ align ea eb = R.fmapMaybe R.dmapToThese $ merge $ dynamicConst $ DMap.fromList [R.LeftTag :=> ea, R.RightTag :=> eb]
1200− DMap.fromDistinctAscList [LeftTag :=> ea, RightTag :=> eb]
1202−#ifdef MIN_VERSION_semialign
1203−#if MIN_VERSION_semialign(1,1,0)
1204−instance HasSpiderTimeline x => Zip (Event x) where
1206− zip x y = mapMaybe justThese $ align x y
1209−data DynType x p = UnsafeDyn !(BehaviorM x (PatchTarget p), Event x p)
1074+newtype Dyn x p = Dyn { unDyn :: IORef (Either (BehaviorM x (R.PatchTarget p), Event x p) (Hold x p)) }
1210− | BuildDyn !(EventM x (PatchTarget p), Event x p)
1211− | HoldDyn !(Hold x p)
1213−newtype Dyn (x :: Type) p = Dyn { unDyn :: IORef (DynType x p) }
1215−newMapDyn :: HasSpiderTimeline x => (a -> b) -> DynamicS x (Identity a) -> DynamicS x (Identity b)
1076+newMapDyn :: (a -> b) -> Dynamic x (Identity a) -> Dynamic x (Identity b)
1216−newMapDyn f d = dynamicDynIdentity $ unsafeBuildDynamic (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1077+newMapDyn f d = dynamicDynIdentity $ unsafeDyn (fmap f $ readBehaviorTracked $ dynamicCurrent d) (Identity . f . runIdentity <$> dynamicUpdated d)
1218--TODO: Avoid the duplication between this and R.zipDynWith
1079--TODO: Avoid the duplication between this and R.zipDynWith
1219−zipDynWith :: HasSpiderTimeline x => (a -> b -> c) -> DynamicS x (Identity a) -> DynamicS x (Identity b) -> DynamicS x (Identity c)
1080+zipDynWith :: (a -> b -> c) -> Dynamic x (Identity a) -> Dynamic x (Identity b) -> Dynamic x (Identity c)
1220zipDynWith f da db =
1081zipDynWith f da db =
1221 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1082 let eab = align (dynamicUpdated da) (dynamicUpdated db)
1222 ec = flip push eab $ \o -> do
1083 ec = flip push eab $ \o -> do
@@ -1229,70 +1090,72 @@ zipDynWith f da db =
1229 return (a, b)
1090 return (a, b)
1230 These (Identity a) (Identity b) -> return (a, b)
1091 These (Identity a) (Identity b) -> return (a, b)
1231 return $ Just $ Identity $ f a b
1092 return $ Just $ Identity $ f a b
1232− in dynamicDynIdentity $ unsafeBuildDynamic (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1093+ in dynamicDynIdentity $ unsafeDyn (f <$> readBehaviorUntracked (dynamicCurrent da) <*> readBehaviorUntracked (dynamicCurrent db)) ec
1234−buildDynamic :: (Defer (SomeDynInit x) m, Patch p) => EventM x (PatchTarget p) -> Event x p -> m (Dyn x p)
1095+unsafeDyn :: BehaviorM x (R.PatchTarget p) -> Event x p -> Dyn x p
1235−buildDynamic readV0 v' = do
1096+unsafeDyn readV0 v' = Dyn $ unsafeNewIORef x $ Left x
1236− result <- liftIO $ newIORef $ BuildDyn (readV0, v')
1097+ where x = (readV0, v')
1237− let !d = Dyn result
1238− defer $ SomeDynInit d
1241−unsafeBuildDynamic :: BehaviorM x (PatchTarget p) -> Event x p -> Dyn x p
1099+newJoinDyn :: Dynamic x (Identity (Dynamic x (Identity a))) -> Dyn x (Identity a)
1242−unsafeBuildDynamic readV0 v' =
1100+newJoinDyn d =
1243− Dyn $ unsafePerformIO $ newIORef $ UnsafeDyn (readV0, v')
1101+ let readV0 = readBehaviorTracked . dynamicCurrent =<< readBehaviorTracked (dynamicCurrent d)
1102+ eOuter = push (fmap (Just . Identity) . readBehaviorUntracked . dynamicCurrent . runIdentity) $ dynamicUpdated d
1103+ eInner = switch $ dynamicUpdated <$> dynamicCurrent d
1104+ eBoth = coincidence $ dynamicUpdated . runIdentity <$> dynamicUpdated d
1105+ v' = unSpiderEvent $ R.leftmost $ map SpiderEvent [eBoth, eOuter, eInner]
1106+ in unsafeDyn readV0 v'
1245-- ResultM can read behaviors and events
1108-- ResultM can read behaviors and events
1246type ResultM = EventM
1109type ResultM = EventM
1111+{-# NOINLINE unsafeNewIORef #-}
1112+unsafeNewIORef :: a -> b -> IORef b
1113+unsafeNewIORef _ b = unsafePerformIO $ newIORef b
1248−instance HasSpiderTimeline x => Functor (Event x) where
1115+instance Functor (Event x) where
1249 fmap f = push $ return . Just . f
1116 fmap f = push $ return . Just . f
1251instance Functor (Behavior x) where
1118instance Functor (Behavior x) where
1252 fmap f = pull . fmap f . readBehaviorTracked
1119 fmap f = pull . fmap f . readBehaviorTracked
1254−{-# INLINE push #-}
1121+{-# NOINLINE push #-} --TODO: If this is helpful, we can get rid of the unsafeNewIORef and use unsafePerformIO directly
1255−push :: HasSpiderTimeline x => (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
1122+push :: (a -> ComputeM x (Maybe b)) -> Event x a -> Event x b
1256−push f e = cacheEvent (pushCheap f e)
1123+push f e = eventPush $ Push
1126+ , pushSubscribed = unsafeNewIORef (f, e) Nothing --TODO: Does the use of the tuple here create unnecessary overhead?
1128+-- DISABLED: {- RULES "push/push" forall f g e. push f (push g e) = push (maybe (return Nothing) f <=< g) e #-}
1258−{-# INLINABLE pull #-}
1130+{-# NOINLINE pull #-}
1259pull :: BehaviorM x a -> Behavior x a
1131pull :: BehaviorM x a -> Behavior x a
1260−pull a = unsafePerformIO $ do
1261− ref <- newIORef Nothing
1262−#ifdef DEBUG_NODEIDS
1265− pure $ behaviorPull $ Pull
1132+pull a = behaviorPull $ Pull
1266− { pullCompute = a
1133+ { pullCompute = a
1267− , pullValue = ref
1134+ , pullValue = unsafeNewIORef a Nothing
1268#ifdef DEBUG_NODEIDS
1135#ifdef DEBUG_NODEIDS
1269− , pullNodeId = nid
1136+ , pullNodeId = unsafeNodeId a
1273−{-# INLINABLE switch #-}
1140+{-# NOINLINE switch #-}
1274−switch :: HasSpiderTimeline x => Behavior x (Event x a) -> Event x a
1141+switch :: Behavior x (Event x a) -> Event x a
1275−switch a = unsafePerformIO $ do
1276− ref <- newIORef Nothing
1277− pure $ eventSwitch $ Switch
1142+switch a = eventSwitch $ Switch
1278− { switchParent = a
1143+ { switchParent = a
1279− , switchSubscribed = ref
1144+ , switchSubscribed = unsafeNewIORef a Nothing
1282−coincidence :: HasSpiderTimeline x => Event x (Event x a) -> Event x a
1147+coincidence :: Event x (Event x a) -> Event x a
1283−coincidence a = unsafePerformIO $ do
1284− ref <- newIORef Nothing
1285− pure $ eventCoincidence $ Coincidence
1148+coincidence a = eventCoincidence $ Coincidence
1286− { coincidenceParent = a
1149+ { coincidenceParent = a
1287− , coincidenceSubscribed = ref
1150+ , coincidenceSubscribed = unsafeNewIORef a Nothing
1290-- Propagate the given event occurrence; before cleaning up, run the given action, which may read the state of events and behaviors
1153-- Propagate the given event occurrence; before cleaning up, run the given action, which may read the state of events and behaviors
1291−run :: forall x b. HasSpiderTimeline x => [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
1154+run :: [DSum (RootTrigger x) Identity] -> ResultM x b -> SpiderHost x b
1292run roots after = do
1155run roots after = do
1293− tracePropagate (Proxy :: Proxy x) $ "Running an event frame with " <> show (length roots) <> " events"
1156+ tracePropagate $ "Running an event frame with " <> show (length roots) <> " events"
1294− let t = spiderTimeline :: SpiderTimelineEnv x
1157+ spiderTimeline <- SpiderHost ask
1295− result <- SpiderHost $ withMVar (_spiderTimeline_lock (unSTE t)) $ \_ -> unSpiderHost $ runFrame $ do
1158+ result <- SpiderHost $ lift $ withMVar (_spiderTimeline_lock spiderTimeline) $ \_ -> flip runReaderT spiderTimeline $ unSpiderHost $ runFrame $ do
1296 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1159 rootsToPropagate <- forM roots $ \r@(RootTrigger (_, occRef, k) :=> a) -> do
1297 occBefore <- liftIO $ do
1160 occBefore <- liftIO $ do
1298 occBefore <- readIORef occRef
1161 occBefore <- readIORef occRef
@@ -1304,40 +1167,43 @@ run roots after = do
1304 else return Nothing
1167 else return Nothing
1305 forM_ (catMaybes rootsToPropagate) $ \(RootTrigger (subscribersRef, _, _) :=> Identity a) -> do
1168 forM_ (catMaybes rootsToPropagate) $ \(RootTrigger (subscribersRef, _, _) :=> Identity a) -> do
1306 propagate a subscribersRef
1169 propagate a subscribersRef
1307− delayedRef <- asksEventEnv eventEnvDelayedMerges
1170+ delayedRef <- EventM $ asks eventEnvDelayedMerges
1308 let go = do
1171 let go = do
1309 delayed <- liftIO $ readIORef delayedRef
1172 delayed <- liftIO $ readIORef delayedRef
1310 case IntMap.minViewWithKey delayed of
1173 case IntMap.minViewWithKey delayed of
1311 Nothing -> return ()
1174 Nothing -> return ()
1312 Just ((currentHeight, cur), future) -> do
1175 Just ((currentHeight, cur), future) -> do
1313− tracePropagate (Proxy :: Proxy x) $ "Running height " ++ show currentHeight
1176+ tracePropagate $ "Running height " ++ show currentHeight
1314 putCurrentHeight $ Height currentHeight
1177 putCurrentHeight $ Height currentHeight
1315 liftIO $ writeIORef delayedRef $! future
1178 liftIO $ writeIORef delayedRef $! future
1316− sequence_ cur
1179+ forM_ cur $ \d -> case d of
1180+ DelayedMerge subscribed -> do
1181+ height <- liftIO $ readIORef $ mergeSubscribedHeight subscribed
1182+ case height `compare` Height currentHeight of
1183+ LT -> error "Somehow a merge's height has been decreased after it was scheduled"
1184+ GT -> scheduleMerge height subscribed -- The height has been increased (by a coincidence event; TODO: is this the only way?)
1186+ m <- liftIO $ readIORef $ mergeSubscribedAccum subscribed
1187+ liftIO $ writeIORef (mergeSubscribedAccum subscribed) $! DMap.empty
1188+ --TODO: Assert that m is not empty
1189+ liftIO $ writeIORef (mergeSubscribedOccurrence subscribed) $ Just m
1190+ scheduleClear $ mergeSubscribedOccurrence subscribed
1191+ propagate m $ mergeSubscribedSubscribers subscribed
1319 putCurrentHeight maxBound
1194 putCurrentHeight maxBound
1321− tracePropagate (Proxy :: Proxy x) "Done running an event frame"
1196+ tracePropagate "Done running an event frame"
1322 return result
1197 return result
1324−scheduleMerge' :: HasSpiderTimeline x => Height -> IORef Height -> EventM x () -> EventM x ()
1199+data SomeClear = forall a. SomeClear (IORef (Maybe a))
1325−scheduleMerge' initialHeight heightRef a = scheduleMerge initialHeight $ do
1326− height <- liftIO $ readIORef heightRef
1327− currentHeight <- getCurrentHeight
1328− case height `compare` currentHeight of
1329− LT -> error "Somehow a merge's height has been decreased after it was scheduled"
1330− GT -> scheduleMerge' height heightRef a -- The height has been increased (by a coincidence event; TODO: is this the only way?)
1333−newtype Clear a = Clear (IORef (Maybe a))
1335−newtype IntClear a = IntClear (IORef (IntMap a))
1201+data SomeRootClear = forall k. SomeRootClear (IORef (DMap k Identity))
1337−newtype RootClear k = RootClear (IORef (DMap k Identity))
1339data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
1203data SomeAssignment x = forall a. SomeAssignment {-# UNPACK #-} !(IORef a) {-# UNPACK #-} !(IORef [Weak (Invalidator x)]) a
1205+data DelayedMerge x = forall k. DelayedMerge (MergeSubscribed x k)
1341debugFinalize :: Bool
1207debugFinalize :: Bool
1342debugFinalize = False
1208debugFinalize = False
@@ -1346,110 +1212,55 @@ mkWeakPtrWithDebug x debugNote = do
1346 x' <- evaluate x
1212 x' <- evaluate x
1347 mkWeakPtr x' $
1213 mkWeakPtr x' $
1348 if debugFinalize
1214 if debugFinalize
1349− then Just $ debugStrLn $ "finalizing: " ++ debugNote
1215+ then Just $ putStrLn $ "finalizing: " ++ debugNote
1350 else Nothing
1216 else Nothing
1352type WeakList a = [Weak a]
1218type WeakList a = [Weak a]
1354−type CanTrace x m = (HasSpiderTimeline x, MonadIO m)
1361−debugSubscriber :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> IO (Subscriber x a)
1362−debugSubscriber description = return . debugSubscriber' description
1364−debugSubscriber' :: forall x a. HasSpiderTimeline x => String -> Subscriber x a -> Subscriber x a
1365−debugSubscriber' description subscribed = Subscriber
1367− subscriberPropagate = \m -> do
1368− tracePropagate (Proxy :: Proxy x) ("subscriberPropagate: " <> description)
1369− subscriberPropagate subscribed m
1370− , subscriberInvalidateHeight = \old -> do
1371− traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", old = " <> show (unHeight old)
1372− subscriberInvalidateHeight subscribed old
1373− traceInvalidateHeight $ "invalidateSubscriberHeight: " <> description <> ", done"
1374− , subscriberRecalculateHeight = \new -> do
1375− traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", new = " <> show (unHeight new)
1376− subscriberRecalculateHeight subscribed new
1377− traceInvalidateHeight $ "subscriberRecalculateHeight: " <> description <> ", done"
1381{-# INLINE withIncreasedDepth #-}
1220{-# INLINE withIncreasedDepth #-}
1382−withIncreasedDepth :: forall proxy x m a. CanTrace x m => proxy x -> m a -> m a
1222+withIncreasedDepth :: CanTrace x m => m a -> m a
1383−withIncreasedDepth _ a = do
1223+withIncreasedDepth a = do
1224+ spiderTimeline <- askSpiderTimeline
1384− liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) succ
1225+ liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) succ
1385 result <- a
1226 result <- a
1386− liftIO $ modifyIORef' (_spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)) pred
1227+ liftIO $ modifyIORef' (_spiderTimeline_depth spiderTimeline) pred
1387 return result
1228 return result
1389−{-# INLINE tracePropagate #-}
1390−tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1391−tracePropagate p = when debugPropagate . trace p
1393−{-# INLINE traceInvalidate #-}
1394−traceInvalidate :: String -> IO ()
1395−traceInvalidate = when debugInvalidate . liftIO . debugStrLn
1397−{-# INLINE traceInvalidateHeight #-}
1398−traceInvalidateHeight :: String -> IO ()
1399−traceInvalidateHeight = when debugInvalidateHeight . liftIO . debugStrLn
1401−{-# INLINE trace #-}
1402−trace :: (CanTrace x m) => proxy x -> String -> m ()
1403−trace p message = traceM p $ return message
1405−{-# INLINE traceM #-}
1406−traceM :: forall x proxy m. (CanTrace x m) => proxy x -> m String -> m ()
1407−traceM _ getMessage = do
1408− message <- getMessage
1409− d <- liftIO $ readIORef $ _spiderTimeline_depth $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
1410− liftIO $ debugStrLn $ replicate d ' ' <> message
1230+withIncreasedDepth :: m a -> m a
1231+withIncreasedDepth = id
1414−{-# INLINE withIncreasedDepth #-}
1234+type CanTrace x m = (HasSpiderTimeline x m, MonadIO m)
1415−withIncreasedDepth :: proxy x -> m a -> m a
1416−withIncreasedDepth _ = id
1418{-# INLINE tracePropagate #-}
1236{-# INLINE tracePropagate #-}
1419−tracePropagate :: (CanTrace x m) => proxy x -> String -> m ()
1237+tracePropagate :: (CanTrace x m) => String -> m ()
1420−tracePropagate _ _ = return ()
1238+tracePropagate = traceWhen debugPropagate
1422{-# INLINE traceInvalidate #-}
1240{-# INLINE traceInvalidate #-}
1423traceInvalidate :: String -> IO ()
1241traceInvalidate :: String -> IO ()
1424−traceInvalidate _ = return ()
1242+traceInvalidate = when debugInvalidate . liftIO . putStrLn
1426−{-# INLINE traceInvalidateHeight #-}
1427−traceInvalidateHeight :: String -> IO ()
1428−traceInvalidateHeight _ = return ()
1430−{-# INLINE debugSubscriber #-}
1431−debugSubscriber :: String -> Subscriber x a -> IO (Subscriber x a)
1432−debugSubscriber _ = return
1434−{-# INLINE debugSubscriber' #-}
1435−debugSubscriber' :: String -> Subscriber x a -> Subscriber x a
1436−debugSubscriber' _ = id
1244+{-# INLINE traceWhen #-}
1245+traceWhen :: (CanTrace x m) => Bool -> String -> m ()
1246+traceWhen b message = traceMWhen b $ return message
1440−{-# INLINE trace #-}
1248+{-# INLINE traceMWhen #-}
1441−trace :: (CanTrace x m) => proxy x -> String -> m ()
1249+traceMWhen :: (CanTrace x m) => Bool -> m String -> m ()
1442−trace _ _ = return ()
1250+traceMWhen b getMessage = when b $ do
1443−
1251+ message <- getMessage
1444−{-# INLINE traceM #-}
1252+#ifdef DEBUG
1445−traceM :: (CanTrace x m) => proxy x -> m String -> m ()
1253+ spiderTimeline <- askSpiderTimeline
1446−traceM _ _ = return ()
1254+ d <- liftIO $ readIORef $ _spiderTimeline_depth spiderTimeline
1258+ liftIO $ putStrLn $ replicate d ' ' <> message
1450whoCreatedIORef :: IORef a -> IO [String]
1260whoCreatedIORef :: IORef a -> IO [String]
1451whoCreatedIORef (IORef a) = whoCreated $! a
1261whoCreatedIORef (IORef a) = whoCreated $! a
1453groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1264groupByHead :: Eq a => [NonEmpty a] -> [(a, NonEmpty [a])]
1454groupByHead = \case
1265groupByHead = \case
1455 [] -> []
1266 [] -> []
@@ -1460,108 +1271,77 @@ groupByHead = \case
1460 | otherwise -> (x, xs :| []) : l
1271 | otherwise -> (x, xs :| []) : l
1462listsToForest :: Eq a => [[a]] -> Forest a
1273listsToForest :: Eq a => [[a]] -> Forest a
1463−listsToForest lists = buildForest <$> groupByHead (mapMaybe nonEmpty lists)
1274+listsToForest l = fmap (\(a, l') -> Node a $ listsToForest $ toList l') $ groupByHead $ catMaybes $ fmap nonEmpty l
1464− where buildForest (a, lists') = Node a $ listsToForest $ toList lists'
1466−showStacks :: [[String]] -> String
1467−showStacks = drawForest . listsToForest . fmap (filterStack "Reflex.Spider.Internal")
1469−filterStack :: String -> [String] -> [String]
1470−#ifdef DEBUG_HIDE_INTERNALS
1471−filterStack prefix = filter (not . (prefix `isPrefixOf`))
1473−filterStack prefix = id
1478−data EventLoopException = EventLoopException [[String]]
1479−instance Exception EventLoopException
1481−instance Show EventLoopException where
1482− show (EventLoopException stacks) = "causality loop detected:\n" <> if null stacks
1483− then "no location information, compile with profiling enabled for stack tree"
1484− else showStacks stacks
1488−data EventLoopException = EventLoopException
1489−instance Exception EventLoopException
1491−instance Show EventLoopException where
1492− show EventLoopException = "causality loop detected: \n" <>
1493− "compile reflex with flag 'debug-cycles' and compile with profiling enabled for stack tree"
1498{-# INLINE propagateSubscriberHold #-}
1277{-# INLINE propagateSubscriberHold #-}
1499−propagateSubscriberHold :: forall x p. (HasSpiderTimeline x, Patch p) => Hold x p -> p -> EventM x ()
1278+propagateSubscriberHold :: R.Patch p => Hold x p -> p -> EventM x ()
1500propagateSubscriberHold h a = do
1279propagateSubscriberHold h a = do
1501− {-# SCC "trace" #-} when debugPropagate $ traceM (Proxy :: Proxy x) $ liftIO $ do
1280+ {-# SCC "trace" #-} traceMWhen debugPropagate $ liftIO $ do
1502 invalidators <- liftIO $ readIORef $ holdInvalidators h
1281 invalidators <- liftIO $ readIORef $ holdInvalidators h
1503 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1282 return $ "SubscriberHold" <> showNodeId h <> ": " ++ show (length invalidators)
1505 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1283 v <- {-# SCC "read" #-} liftIO $ readIORef $ holdValue h
1506− case {-# SCC "apply" #-} apply a v of
1284+ case {-# SCC "apply" #-} R.apply a v of
1507 Nothing -> return ()
1285 Nothing -> return ()
1508 Just v' -> do
1286 Just v' -> do
1509− {-# SCC "trace2" #-} withIncreasedDepth (Proxy :: Proxy x) $
1510− tracePropagate (Proxy :: Proxy x) ("propagateSubscriberHold: assigning Hold" <> showNodeId h)
1287+ {-# SCC "trace2" #-} withIncreasedDepth $ tracePropagate $ "propagateSubscriberHold: assigning Hold" <> showNodeId h
1511 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1288 vRef <- {-# SCC "vRef" #-} liftIO $ evaluate $ holdValue h
1512 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1289 iRef <- {-# SCC "iRef" #-} liftIO $ evaluate $ holdInvalidators h
1513 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1290 defer $ {-# SCC "assignment" #-} SomeAssignment vRef iRef v'
1515−data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1292+data SomeResetCoincidence x = forall a. SomeResetCoincidence !(EventSubscription x a) !(Maybe (CoincidenceSubscribed x a)) -- The CoincidenceSubscriber will be present only if heights need to be reset
1517runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1294runBehaviorM :: BehaviorM x a -> Maybe (Weak (Invalidator x), IORef [SomeBehaviorSubscribed x]) -> IORef [SomeHoldInit x] -> IO a
1518−runBehaviorM a mwi holdInits = runReaderIO (unBehaviorM a) (mwi, holdInits)
1295+runBehaviorM a mwi holdInits = runReaderT (unBehaviorM a) (mwi, holdInits)
1520askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1297askInvalidator :: BehaviorM x (Maybe (Weak (Invalidator x)))
1521askInvalidator = do
1298askInvalidator = do
1522− (!m, _) <- ask
1299+ (!m, _) <- BehaviorM ask
1523 case m of
1300 case m of
1524 Nothing -> return Nothing
1301 Nothing -> return Nothing
1525 Just (!wi, _) -> return $ Just wi
1302 Just (!wi, _) -> return $ Just wi
1527askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1304askParentsRef :: BehaviorM x (Maybe (IORef [SomeBehaviorSubscribed x]))
1528askParentsRef = do
1305askParentsRef = do
1529− (!m, _) <- ask
1306+ (!m, _) <- BehaviorM ask
1530 case m of
1307 case m of
1531 Nothing -> return Nothing
1308 Nothing -> return Nothing
1532 Just (_, !p) -> return $ Just p
1309 Just (_, !p) -> return $ Just p
1534askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1311askBehaviorHoldInits :: BehaviorM x (IORef [SomeHoldInit x])
1535askBehaviorHoldInits = do
1312askBehaviorHoldInits = do
1536− (_, !his) <- ask
1313+ (_, !his) <- BehaviorM ask
1537 return his
1314 return his
1539{-# INLINE getDynHold #-}
1316{-# INLINE getDynHold #-}
1540−getDynHold :: (Defer (SomeHoldInit x) m, Patch p) => Dyn x p -> m (Hold x p)
1317+getDynHold :: (Defer (SomeHoldInit x) m, R.Patch p) => Dyn x p -> m (Hold x p)
1541getDynHold d = do
1318getDynHold d = do
1542 mh <- liftIO $ readIORef $ unDyn d
1319 mh <- liftIO $ readIORef $ unDyn d
1543 case mh of
1320 case mh of
1544− HoldDyn h -> return h
1321+ Right h -> return h
1545− UnsafeDyn (readV0, v') -> do
1322+ Left (readV0, v') -> do
1546 holdInits <- getDeferralQueue
1323 holdInits <- getDeferralQueue
1547 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1324 v0 <- liftIO $ runBehaviorM readV0 Nothing holdInits
1549− BuildDyn (readV0, v') -> do
1550− v0 <- liftIO $ runEventM readV0
1554 h <- hold v0 v'
1325 h <- hold v0 v'
1555− liftIO $ writeIORef (unDyn d) $ HoldDyn h
1326+ liftIO $ writeIORef (unDyn d) $ Right h
1556 return h
1327 return h
1559-- Always refers to 0
1329-- Always refers to 0
1560{-# NOINLINE zeroRef #-}
1330{-# NOINLINE zeroRef #-}
1561zeroRef :: IORef Height
1331zeroRef :: IORef Height
1562zeroRef = unsafePerformIO $ newIORef zeroHeight
1332zeroRef = unsafePerformIO $ newIORef zeroHeight
1334+type CanSubscribe x m =
1335+ ( HasSpiderTimeline x m
1336+ , HasCurrentHeight x m
1337+ , Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m -- The things we need to lazily initialize state
1338+ , Defer SomeClear m -- Wiping out event firings
1339+ , Defer (SomeAssignment x) m -- Updating state
1340+ , Defer (SomeResetCoincidence x) m
1564−getRootSubscribed :: forall k x a. (GCompare k, HasSpiderTimeline x) => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket, RootSubscribed x a, Maybe a)
1344+getRootSubscribed :: GCompare k => k a -> Root x k -> Subscriber x a -> IO (WeakBagTicket (Subscriber x a), RootSubscribed x a, Maybe a)
1565getRootSubscribed k r sub = do
1345getRootSubscribed k r sub = do
1566 mSubscribed <- readIORef $ rootSubscribed r
1346 mSubscribed <- readIORef $ rootSubscribed r
1567 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
1347 let getOcc = fmap (coerce . DMap.lookup k) $ readIORef $ rootOccurrence r
@@ -1575,15 +1355,10 @@ getRootSubscribed k r sub = do
1575 let !cached = rootSubscribed r
1355 let !cached = rootSubscribed r
1576 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1356 uninitRef <- newIORef $ error "getRootsubscribed: uninitRef not initialized"
1577 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1357 (subs, sln) <- WeakBag.singleton sub weakSelf cleanupRootSubscribed
1579− tracePropagate (Proxy::Proxy x) $ "getRootSubscribed: calling rootInit"
1358+ when debugPropagate $ putStrLn $ "getRootSubscribed: calling rootInit"
1581 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1359 uninit <- rootInit r k $ RootTrigger (subs, rootOccurrence r, k)
1582 writeIORef uninitRef $! uninit
1360 writeIORef uninitRef $! uninit
1583−#ifdef DEBUG_NODEIDS
1586− let !subscribed = RootSubscribed
1361+ let subscribed = RootSubscribed
1587 { rootSubscribedKey = k
1362 { rootSubscribedKey = k
1588 , rootSubscribedCachedSubscribed = cached
1363 , rootSubscribedCachedSubscribed = cached
1589 , rootSubscribedOccurrence = getOcc
1364 , rootSubscribedOccurrence = getOcc
@@ -1591,120 +1366,143 @@ getRootSubscribed k r sub = do
1591 , rootSubscribedUninit = uninit
1366 , rootSubscribedUninit = uninit
1592 , rootSubscribedWeakSelf = weakSelf
1367 , rootSubscribedWeakSelf = weakSelf
1593#ifdef DEBUG_NODEIDS
1368#ifdef DEBUG_NODEIDS
1594− , rootSubscribedNodeId = nid
1369+ , rootSubscribedNodeId = unsafeNodeId (k, r, subs)
1597− -- If we die at the same moment that all our children die, they will
1598− -- try to clean us up but will fail because their Weak reference to us
1599− -- will also be dead. So, if we are dying, check if there are any
1600− -- children; since children don't bother cleaning themselves up if
1601− -- their parents are already dead, I don't think there's a race
1602− -- condition here. However, if there are any children, then we can
1603− -- infer that we need to clean ourselves up, so we do.
1605− cs <- readIORef $ _weakBag_children subs
1606− when (not $ IntMap.null cs) (cleanupRootSubscribed subscribed)
1607− writeIORef weakSelf =<< evaluate =<< mkWeakPtr subscribed (Just finalCleanup)
1372+ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "RootSubscribed"
1608 modifyIORef' (rootSubscribed r) $ DMap.insertWith (error $ "getRootSubscribed: duplicate key inserted into Root") k subscribed --TODO: I think we can just write back mSubscribed rather than re-reading it
1373 modifyIORef' (rootSubscribed r) $ DMap.insertWith (error $ "getRootSubscribed: duplicate key inserted into Root") k subscribed --TODO: I think we can just write back mSubscribed rather than re-reading it
1609 occ <- getOcc
1374 occ <- getOcc
1610 return (sln, subscribed, occ)
1375 return (sln, subscribed, occ)
1612−#ifdef USE_TEMPLATE_HASKELL
1613{-# ANN cleanupRootSubscribed "HLint: ignore Redundant bracket" #-}
1377{-# ANN cleanupRootSubscribed "HLint: ignore Redundant bracket" #-}
1615cleanupRootSubscribed :: RootSubscribed x a -> IO ()
1378cleanupRootSubscribed :: RootSubscribed x a -> IO ()
1616−cleanupRootSubscribed self@RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached } = do
1379+cleanupRootSubscribed self@(RootSubscribed { rootSubscribedKey = k, rootSubscribedCachedSubscribed = cached }) = do
1617 rootSubscribedUninit self
1380 rootSubscribedUninit self
1618 modifyIORef' cached $ DMap.delete k
1381 modifyIORef' cached $ DMap.delete k
1620{-# INLINE subscribeRootSubscribed #-}
1383{-# INLINE subscribeRootSubscribed #-}
1621−subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1384+subscribeRootSubscribed :: RootSubscribed x a -> Subscriber x a -> IO (WeakBagTicket (Subscriber x a))
1622subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1385subscribeRootSubscribed subscribed sub = WeakBag.insert sub (rootSubscribedSubscribers subscribed) (rootSubscribedWeakSelf subscribed) cleanupRootSubscribed
1624−newtype EventSelectorInt x a = EventSelectorInt { selectInt :: Int -> Event x a }
1387+-- When getPushSubscribed returns, the PushSubscribed returned will have a fully filled-in
1625−
1388+{-# SPECIALIZE getPushSubscribed :: Push x a b -> Subscriber x b -> EventM x (WeakBagTicket (Subscriber x b), PushSubscribed x a b, Maybe b) #-}
1626−data FanInt x a = FanInt
1389+getPushSubscribed :: CanSubscribe x m => Push x a b -> Subscriber x b -> m (WeakBagTicket (Subscriber x b), PushSubscribed x a b, Maybe b)
1627− { _fanInt_subscribers :: {-# UNPACK #-} !(FastMutableIntMap (FastWeakBag (Subscriber x a))) --TODO: Clean up the keys in here when their child weak bags get empty --TODO: Remove our own subscription when the subscribers list is completely empty
1390+getPushSubscribed p sub = do
1628− , _fanInt_subscriptionRef :: {-# UNPACK #-} !(IORef (EventSubscription x)) -- This should have a valid subscription iff subscribers is non-empty
1391+ mSubscribed <- liftIO $ readIORef $ pushSubscribed p
1629− , _fanInt_occRef :: {-# UNPACK #-} !(IORef (IntMap a))
1392+ case mSubscribed of
1393+ Just subscribed -> {-# SCC "hitPush" #-} liftIO $ do
1394+ sln <- subscribePushSubscribed subscribed sub
1395+ occ <- readIORef $ pushSubscribedOccurrence subscribed
1396+ return (sln, subscribed, occ)
1397+ Nothing -> {-# SCC "missPush" #-} do -- Not yet subscribed
1398+ subscribedRef <- liftIO $ newIORef $ error "getPushSubscribed: subscribed not yet intialized"
1399+ subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1400+ s <- liftIO $ newSubscriberPush (pushCompute p) subscribedUnsafe
1401+ (subscription@(EventSubscription _ subd), parentOcc) <- subscribeAndRead (pushParent p) s
1402+ occ <- runComputeM $ join <$> mapM (pushCompute p) parentOcc
1403+ occRef <- liftIO $ newIORef occ
1404+ when (isJust occ) $ scheduleClear occRef
1405+ weakSelf <- liftIO $ newIORef $ error "getPushSubscribed: weakSelf not initialized"
1406+ let !cached = pushSubscribed p
1407+ (subs, sln) <- liftIO $ WeakBag.singleton sub weakSelf cleanupPushSubscribed
1408+ let subscribed = PushSubscribed
1409+ { pushSubscribedCachedSubscribed = cached
1410+ , pushSubscribedOccurrence = occRef
1411+ , pushSubscribedHeight = eventSubscribedHeightRef subd -- Since pushes have the same height as their parents, share the ref
1412+ , pushSubscribedSubscribers = subs
1413+ , pushSubscribedSelf = s
1414+ , pushSubscribedWeakSelf = weakSelf
1415+ , pushSubscribedParent = subscription
1630#ifdef DEBUG_NODEIDS
1416#ifdef DEBUG_NODEIDS
1631− , _fanInt_nodeId :: {-# UNPACK #-} !Int
1417+ , pushSubscribedNodeId = unsafeNodeId p
1420+ liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "PushSubscribed"
1421+ liftIO $ writeIORef subscribedRef $! subscribed
1422+ liftIO $ writeIORef (pushSubscribed p) $ Just subscribed
1423+ return (sln, subscribed, occ)
1635−newFanInt :: IO (FanInt x a)
1425+cleanupPushSubscribed :: PushSubscribed x a b -> IO ()
1636−newFanInt = do
1426+cleanupPushSubscribed self = do
1637− subscribers <- FastMutableIntMap.newEmpty --TODO: Clean up the keys in here when their child weak bags get empty --TODO: Remove our own subscription when the subscribers list is completely empty
1427+ unsubscribe $ pushSubscribedParent self
1638− subscriptionRef <- newIORef $ error "fanInt: no subscription"
1428+ writeIORef (pushSubscribedCachedSubscribed self) $ Nothing
1639− occRef <- newIORef $ error "fanInt: no occurrence"
1429+
1640−#ifdef DEBUG_NODEIDS
1430+{-# INLINE subscribePushSubscribed #-}
1641− nodeId <- newNodeId
1431+subscribePushSubscribed :: PushSubscribed x a b -> Subscriber x b -> IO (WeakBagTicket (Subscriber x b))
1642−#endif
1432+subscribePushSubscribed subscribed sub = WeakBag.insert sub (pushSubscribedSubscribers subscribed) (pushSubscribedWeakSelf subscribed) cleanupPushSubscribed
1643− return $ FanInt
1433+
1644− { _fanInt_subscribers = subscribers
1434+{-# SPECIALIZE getMergeSubscribed :: GCompare k => Merge x k -> Subscriber x (DMap k Identity) -> EventM x (WeakBagTicket (Subscriber x (DMap k Identity)), MergeSubscribed x k, Maybe (DMap k Identity)) #-}
1645− , _fanInt_subscriptionRef = subscriptionRef
1435+getMergeSubscribed :: forall x k m. (CanSubscribe x m, GCompare k) => Merge x k -> Subscriber x (DMap k Identity) -> m (WeakBagTicket (Subscriber x (DMap k Identity)), MergeSubscribed x k, Maybe (DMap k Identity))
1646− , _fanInt_occRef = occRef
1436+getMergeSubscribed m sub = do
1437+ mSubscribed <- liftIO $ readIORef $ mergeSubscribed m
1438+ case mSubscribed of
1439+ Just subscribed -> {-# SCC "hitMerge" #-} liftIO $ do
1440+ sln <- subscribeMergeSubscribed subscribed sub
1441+ occ <- readIORef $ mergeSubscribedOccurrence subscribed
1442+ return (sln, subscribed, occ)
1443+ Nothing -> {-# SCC "missMerge" #-} do
1444+ subscribedRef <- liftIO $ newIORef $ error "getMergeSubscribed: subscribedRef not yet initialized"
1445+ subscribedUnsafe <- liftIO $ unsafeInterleaveIO $ readIORef subscribedRef
1446+ initialParents <- readBehaviorUntracked $ dynamicCurrent $ mergeParents m
1447+ subscribers :: [(Maybe (DSum k Identity), Height, DSum k (MergeSubscribedParent x k))] <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1448+ s <- liftIO $ newSubscriberMerge k subscribedUnsafe
1449+ (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead e s
1450+ height <- liftIO $ getEventSubscribedHeight parentSubd
1451+ return $ (fmap (\x -> k :=> Identity x) parentOcc, height, k :=> MergeSubscribedParent subscription s)
1452+ let dm = DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1453+ heights = fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1454+ myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
1455+ myHeight = if invalidHeight `elem` heights
1457+ else succHeight $ heightBagMax myHeightBag
1458+ currentHeight <- getCurrentHeight
1459+ let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
1460+ then (if DMap.null dm then Nothing else Just dm, DMap.empty)
1462+ unless (DMap.null accum) $ do
1463+ scheduleMerge myHeight subscribedUnsafe
1464+ occRef <- liftIO $ newIORef occ
1465+ when (isJust occ) $ scheduleClear occRef
1466+ accumRef <- liftIO $ newIORef accum
1467+ heightRef <- liftIO $ newIORef myHeight
1468+ heightMapRef <- liftIO $ newIORef myHeightBag
1469+ weakSelf <- liftIO $ newIORef $ error "getMergeSubscribed: weakSelf not yet initialized"
1470+ (subs, sln) <- liftIO $ WeakBag.singleton sub weakSelf cleanupMergeSubscribed
1471+ changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
1472+ parentsRef <- liftIO $ newIORef $ DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1473+ let !subscribed = MergeSubscribed
1474+ { mergeSubscribedCachedSubscribed = mergeSubscribed m
1475+ , mergeSubscribedOccurrence = occRef
1476+ , mergeSubscribedAccum = accumRef
1477+ , mergeSubscribedHeight = heightRef
1478+ , mergeSubscribedHeightBag = heightMapRef
1479+ , mergeSubscribedSubscribers = subs
1480+ , mergeSubscribedChange = changeSubdRef
1481+ , mergeSubscribedParents = parentsRef
1482+ , mergeSubscribedWeakSelf = weakSelf
1647#ifdef DEBUG_NODEIDS
1483#ifdef DEBUG_NODEIDS
1648− , _fanInt_nodeId = nodeId
1484+ , mergeSubscribedNodeId = unsafeNodeId m
1487+ defer $ SomeMergeInit subscribed $ dynamicUpdated $ mergeParents m
1488+ liftIO $ writeIORef subscribedRef $! subscribed
1489+ liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "MergeSubscribed"
1490+ liftIO $ writeIORef (mergeSubscribed m) $ Just subscribed
1491+ return (sln, subscribed, occ)
1652−fanInt :: HasSpiderTimeline x => Event x (IntMap a) -> EventSelectorInt x a
1493+cleanupMergeSubscribed :: MergeSubscribed x k -> IO ()
1653−fanInt p = unsafePerformIO $ do
1494+cleanupMergeSubscribed subscribed = do
1654− self <- newFanInt
1495+ parents <- readIORef $ mergeSubscribedParents subscribed
1655− pure $ EventSelectorInt $ \k -> Event $ \sub -> do
1496+ forM_ (DMap.toList parents) $ \(_ :=> msp) -> unsubscribe $ mergeSubscribedParentSubscription msp
1656− isEmpty <- liftIO $ FastMutableIntMap.isEmpty (_fanInt_subscribers self)
1497+ -- Not necessary, because this whole MergeSubscribed is dead: writeIORef (mergeSubscribedParents subscribed) DMap.empty
1657− when isEmpty $ do -- This is the first subscriber, so we need to subscribe to our input
1498+ writeIORef (mergeSubscribedCachedSubscribed subscribed) $ Nothing -- Get rid of the cached subscribed
1658− let desc = "fanInt" <> showNodeId self <> ", k = " <> show k
1659− (subscription, parentOcc) <- subscribeAndRead p $ debugSubscriber' desc $ Subscriber
1660− { subscriberPropagate = \m -> do
1661− liftIO $ writeIORef (_fanInt_occRef self) m
1662− scheduleIntClear $ _fanInt_occRef self
1663− FastMutableIntMap.forIntersectionWithImmutable_ (_fanInt_subscribers self) m $ \b v -> --TODO: Do we need to know that no subscribers are being added as we traverse?
1664− FastWeakBag.traverse_ b $ \s ->
1665− subscriberPropagate s v
1666− , subscriberInvalidateHeight = \old ->
1667− FastMutableIntMap.for_ (_fanInt_subscribers self) $ \b ->
1668− FastWeakBag.traverse_ b $ \s ->
1669− subscriberInvalidateHeight s old
1670− , subscriberRecalculateHeight = \new ->
1671− FastMutableIntMap.for_ (_fanInt_subscribers self) $ \b ->
1672− FastWeakBag.traverse_ b $ \s ->
1673− subscriberRecalculateHeight s new
1676− writeIORef (_fanInt_subscriptionRef self) subscription
1677− writeIORef (_fanInt_occRef self) $ fromMaybe IntMap.empty parentOcc
1678− scheduleIntClear $ _fanInt_occRef self
1680− b <- FastMutableIntMap.lookup (_fanInt_subscribers self) k >>= \case
1682− b <- FastWeakBag.empty
1683− FastMutableIntMap.insert (_fanInt_subscribers self) k b
1686− ticket <- liftIO $ FastWeakBag.insert sub b
1687− currentOcc <- readIORef (_fanInt_occRef self)
1689− subscribed <- fanIntSubscribed ticket self
1690− return (EventSubscription (FastWeakBag.remove ticket) subscribed, IntMap.lookup k currentOcc)
1692−fanIntSubscribed :: FastWeakBagTicket k -> FanInt x a -> IO (EventSubscribed x)
1693−fanIntSubscribed ticket self = do
1694− subscribedParent <- _eventSubscription_subscribed <$> readIORef (_fanInt_subscriptionRef self)
1695− return $ EventSubscribed
1696− { eventSubscribedHeightRef = eventSubscribedHeightRef subscribedParent
1697− , eventSubscribedRetained = toAny (_fanInt_subscriptionRef self, ticket)
1699− , eventSubscribedGetParents = return [subscribedParent]
1700− , eventSubscribedHasOwnHeightRef = False
1701− , eventSubscribedWhoCreated = whoCreatedIORef $ _fanInt_subscriptionRef self
1500+{-# INLINE subscribeMergeSubscribed #-}
1501+subscribeMergeSubscribed :: MergeSubscribed x k -> Subscriber x (DMap k Identity) -> IO (WeakBagTicket (Subscriber x (DMap k Identity)))
1502+subscribeMergeSubscribed subscribed sub = WeakBag.insert sub (mergeSubscribedSubscribers subscribed) (mergeSubscribedWeakSelf subscribed) cleanupMergeSubscribed
1706−{-# INLINABLE getFanSubscribed #-}
1504+{-# SPECIALIZE getFanSubscribed :: GCompare k => k a -> Fan x k -> Subscriber x a -> EventM x (WeakBagTicket (Subscriber x a), FanSubscribed x k, Maybe a) #-}
1707−getFanSubscribed :: (HasSpiderTimeline x, GCompare k) => k a -> Fan x k v -> Subscriber x (v a) -> EventM x (WeakBagTicket, FanSubscribed x k v, Maybe (v a))
1505+getFanSubscribed :: (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, HasCurrentHeight x m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x m, m ~ EventM x, GCompare k) => k a -> Fan x k -> Subscriber x a -> m (WeakBagTicket (Subscriber x a), FanSubscribed x k, Maybe a)
1708getFanSubscribed k f sub = do
1506getFanSubscribed k f sub = do
1709 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1507 mSubscribed <- liftIO $ readIORef $ fanSubscribed f
1710 case mSubscribed of
1508 case mSubscribed of
@@ -1722,16 +1520,13 @@ getFanSubscribed k f sub = do
1722 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1520 subscribersRef <- liftIO $ newIORef $ error "getFanSubscribed: subscribersRef not yet initialized"
1723 occRef <- liftIO $ newIORef parentOcc
1521 occRef <- liftIO $ newIORef parentOcc
1724 when (isJust parentOcc) $ scheduleClear occRef
1522 when (isJust parentOcc) $ scheduleClear occRef
1725−#ifdef DEBUG_NODEIDS
1726− nid <- liftIO newNodeId
1728 let subscribed = FanSubscribed
1523 let subscribed = FanSubscribed
1729 { fanSubscribedCachedSubscribed = fanSubscribed f
1524 { fanSubscribedCachedSubscribed = fanSubscribed f
1730 , fanSubscribedOccurrence = occRef
1525 , fanSubscribedOccurrence = occRef
1731 , fanSubscribedParent = subscription
1526 , fanSubscribedParent = subscription
1732 , fanSubscribedSubscribers = subscribersRef
1527 , fanSubscribedSubscribers = subscribersRef
1733#ifdef DEBUG_NODEIDS
1528#ifdef DEBUG_NODEIDS
1734− , fanSubscribedNodeId = nid
1529+ , fanSubscribedNodeId = unsafeNodeId f
1737 let !self = (k, subscribed)
1532 let !self = (k, subscribed)
@@ -1741,7 +1536,7 @@ getFanSubscribed k f sub = do
1741 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1536 liftIO $ writeIORef (fanSubscribed f) $ Just subscribed
1742 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1537 return (slnForSub, subscribed, coerce $ DMap.lookup k =<< parentOcc)
1744−cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k v) -> IO ()
1539+cleanupFanSubscribed :: GCompare k => (k a, FanSubscribed x k) -> IO ()
1745cleanupFanSubscribed (k, subscribed) = do
1540cleanupFanSubscribed (k, subscribed) = do
1746 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1541 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1747 let reducedSubscribers = DMap.delete k subscribers
1542 let reducedSubscribers = DMap.delete k subscribers
@@ -1753,7 +1548,7 @@ cleanupFanSubscribed (k, subscribed) = do
1753 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1548 else writeIORef (fanSubscribedSubscribers subscribed) $! reducedSubscribers
1755{-# INLINE subscribeFanSubscribed #-}
1550{-# INLINE subscribeFanSubscribed #-}
1756−subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k v -> Subscriber x (v a) -> IO WeakBagTicket
1551+subscribeFanSubscribed :: GCompare k => k a -> FanSubscribed x k -> Subscriber x a -> IO (WeakBagTicket (Subscriber x a))
1757subscribeFanSubscribed k subscribed sub = do
1552subscribeFanSubscribed k subscribed sub = do
1758 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1553 subscribers <- readIORef $ fanSubscribedSubscribers subscribed
1759 case DMap.lookup k subscribers of
1554 case DMap.lookup k subscribers of
@@ -1765,8 +1560,8 @@ subscribeFanSubscribed k subscribed sub = do
1765 return sln
1560 return sln
1766 Just (FanSubscribedChildren list _ weakSelf) -> {-# SCC "hitSubscribeFanSubscribed" #-} WeakBag.insert sub list weakSelf cleanupFanSubscribed
1561 Just (FanSubscribedChildren list _ weakSelf) -> {-# SCC "hitSubscribeFanSubscribed" #-} WeakBag.insert sub list weakSelf cleanupFanSubscribed
1768−{-# INLINABLE getSwitchSubscribed #-}
1563+{-# SPECIALIZE getSwitchSubscribed :: Switch x a -> Subscriber x a -> EventM x (WeakBagTicket (Subscriber x a), SwitchSubscribed x a, Maybe a) #-}
1769−getSwitchSubscribed :: HasSpiderTimeline x => Switch x a -> Subscriber x a -> EventM x (WeakBagTicket, SwitchSubscribed x a, Maybe a)
1564+getSwitchSubscribed :: (Defer (SomeHoldInit x) m, Defer (SomeAssignment x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, Defer (SomeResetCoincidence x) m, HasCurrentHeight x m, HasSpiderTimeline x m, m ~ EventM x) => Switch x a -> Subscriber x a -> m (WeakBagTicket (Subscriber x a), SwitchSubscribed x a, Maybe a)
1770getSwitchSubscribed s sub = do
1565getSwitchSubscribed s sub = do
1771 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1566 mSubscribed <- liftIO $ readIORef $ switchSubscribed s
1772 case mSubscribed of
1567 case mSubscribed of
@@ -1791,9 +1586,6 @@ getSwitchSubscribed s sub = do
1791 when (isJust parentOcc) $ scheduleClear occRef
1586 when (isJust parentOcc) $ scheduleClear occRef
1792 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1587 weakSelf <- liftIO $ newIORef $ error "getSwitchSubscribed: weakSelf not yet initialized"
1793 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupSwitchSubscribed
1588 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupSwitchSubscribed
1794−#ifdef DEBUG_NODEIDS
1795− nid <- liftIO newNodeId
1797 let !subscribed = SwitchSubscribed
1589 let !subscribed = SwitchSubscribed
1798 { switchSubscribedCachedSubscribed = switchSubscribed s
1590 { switchSubscribedCachedSubscribed = switchSubscribed s
1799 , switchSubscribedOccurrence = occRef
1591 , switchSubscribedOccurrence = occRef
@@ -1806,7 +1598,7 @@ getSwitchSubscribed s sub = do
1806 , switchSubscribedCurrentParent = subscriptionRef
1598 , switchSubscribedCurrentParent = subscriptionRef
1807 , switchSubscribedWeakSelf = weakSelf
1599 , switchSubscribedWeakSelf = weakSelf
1808#ifdef DEBUG_NODEIDS
1600#ifdef DEBUG_NODEIDS
1809− , switchSubscribedNodeId = nid
1601+ , switchSubscribedNodeId = unsafeNodeId s
1812 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
1604 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "switchSubscribedWeakSelf"
@@ -1821,11 +1613,11 @@ cleanupSwitchSubscribed subscribed = do
1821 writeIORef (switchSubscribedCachedSubscribed subscribed) Nothing
1613 writeIORef (switchSubscribedCachedSubscribed subscribed) Nothing
1823{-# INLINE subscribeSwitchSubscribed #-}
1615{-# INLINE subscribeSwitchSubscribed #-}
1824−subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1616+subscribeSwitchSubscribed :: SwitchSubscribed x a -> Subscriber x a -> IO (WeakBagTicket (Subscriber x a))
1825subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1617subscribeSwitchSubscribed subscribed sub = WeakBag.insert sub (switchSubscribedSubscribers subscribed) (switchSubscribedWeakSelf subscribed) cleanupSwitchSubscribed
1827−{-# INLINABLE getCoincidenceSubscribed #-}
1619+{-# SPECIALIZE getCoincidenceSubscribed :: Coincidence x a -> Subscriber x a -> EventM x (WeakBagTicket (Subscriber x a), CoincidenceSubscribed x a, Maybe a) #-}
1828−getCoincidenceSubscribed :: forall x a. HasSpiderTimeline x => Coincidence x a -> Subscriber x a -> EventM x (WeakBagTicket, CoincidenceSubscribed x a, Maybe a)
1620+getCoincidenceSubscribed :: forall x a m. (Defer (SomeAssignment x) m, Defer (SomeHoldInit x) m, Defer (SomeMergeInit x) m, Defer SomeClear m, HasCurrentHeight x m, Defer (SomeResetCoincidence x) m, HasSpiderTimeline x m, m ~ EventM x) => Coincidence x a -> Subscriber x a -> m (WeakBagTicket (Subscriber x a), CoincidenceSubscribed x a, Maybe a)
1829getCoincidenceSubscribed c sub = do
1621getCoincidenceSubscribed c sub = do
1830 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1622 mSubscribed <- liftIO $ readIORef $ coincidenceSubscribed c
1831 case mSubscribed of
1623 case mSubscribed of
@@ -1851,9 +1643,6 @@ getCoincidenceSubscribed c sub = do
1851 scheduleClear innerSubdRef
1643 scheduleClear innerSubdRef
1852 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1644 weakSelf <- liftIO $ newIORef $ error "getCoincidenceSubscribed: weakSelf not yet implemented"
1853 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCoincidenceSubscribed
1645 (subs, slnForSub) <- liftIO $ WeakBag.singleton sub weakSelf cleanupCoincidenceSubscribed
1854−#ifdef DEBUG_NODEIDS
1855− nid <- liftIO newNodeId
1857 let subscribed = CoincidenceSubscribed
1646 let subscribed = CoincidenceSubscribed
1858 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1647 { coincidenceSubscribedCachedSubscribed = coincidenceSubscribed c
1859 , coincidenceSubscribedOccurrence = occRef
1648 , coincidenceSubscribedOccurrence = occRef
@@ -1864,7 +1653,7 @@ getCoincidenceSubscribed c sub = do
1864 , coincidenceSubscribedInnerParent = innerSubdRef
1653 , coincidenceSubscribedInnerParent = innerSubdRef
1865 , coincidenceSubscribedWeakSelf = weakSelf
1654 , coincidenceSubscribedWeakSelf = weakSelf
1866#ifdef DEBUG_NODEIDS
1655#ifdef DEBUG_NODEIDS
1867− , coincidenceSubscribedNodeId = nid
1656+ , coincidenceSubscribedNodeId = unsafeNodeId c
1870 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
1659 liftIO $ writeIORef weakSelf =<< evaluate =<< mkWeakPtrWithDebug subscribed "CoincidenceSubscribed"
@@ -1878,535 +1667,145 @@ cleanupCoincidenceSubscribed subscribed = do
1878 writeIORef (coincidenceSubscribedCachedSubscribed subscribed) Nothing
1667 writeIORef (coincidenceSubscribedCachedSubscribed subscribed) Nothing
1880{-# INLINE subscribeCoincidenceSubscribed #-}
1669{-# INLINE subscribeCoincidenceSubscribed #-}
1881−subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO WeakBagTicket
1670+subscribeCoincidenceSubscribed :: CoincidenceSubscribed x a -> Subscriber x a -> IO (WeakBagTicket (Subscriber x a))
1882subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1671subscribeCoincidenceSubscribed subscribed sub = WeakBag.insert sub (coincidenceSubscribedSubscribers subscribed) (coincidenceSubscribedWeakSelf subscribed) cleanupCoincidenceSubscribed
1884−{-# INLINE mergeG #-}
1673+{-# INLINE merge #-}
1885−mergeG :: forall k q x v. (HasSpiderTimeline x, GCompare k)
1674+merge :: GCompare k => Dynamic x (R.PatchDMap k (Event x)) -> Event x (DMap k Identity)
1886− => (forall a. q a -> Event x (v a))
1675+merge m = eventMerge $ Merge
1887− -> DynamicS x (PatchDMap k q) -> Event x (DMap k v)
1676+ { mergeParents = m
1888−mergeG nt d = cacheEvent (mergeCheap nt d)
1677+ , mergeSubscribed = unsafeNewIORef m Nothing
1890−{-# INLINE mergeWithMove #-}
1891−mergeWithMove :: forall k v q x. (HasSpiderTimeline x, GCompare k)
1892− => (forall a. q a -> Event x (v a))
1893− -> DynamicS x (PatchDMapWithMove k q) -> Event x (DMap k v)
1894−mergeWithMove nt d = cacheEvent (mergeCheapWithMove nt d)
1896−{-# INLINE [1] mergeCheap #-}
1898− :: forall k x q v. (HasSpiderTimeline x, GCompare k)
1899− => (forall a. q a -> Event x (v a))
1900− -> DynamicS x (PatchDMap k q)
1901− -> Event x (DMap k v)
1902−mergeCheap nt = mergeGCheap' unMergeSubscribedParent getInitialSubscribers updateMe destroy
1904− updateMe :: MergeUpdateFunc k v x (PatchDMap k q) (MergeSubscribedParent x)
1905− updateMe subscriber heightBagRef oldParents (PatchDMap p) = do
1906− let f (subscriptionsToKill, ps) (k :=> ComposeMaybe me) = do
1907− (mOldSubd, newPs) <- case me of
1908− Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
1910− let s = subscriber $ return k
1911− subscription@(EventSubscription _ subd) <- subscribe (nt e) s
1912− newParentHeight <- liftIO $ getEventSubscribedHeight subd
1913− let newParent = MergeSubscribedParent subscription
1914− liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
1915− return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
1916− forM_ mOldSubd $ \oldSubd -> do
1917− oldHeight <- liftIO $ getEventSubscribedHeight $
1918− _eventSubscription_subscribed $ unMergeSubscribedParent oldSubd
1920− liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
1921− return (maybeToList (unMergeSubscribedParent <$> mOldSubd) ++ subscriptionsToKill, newPs)
1922− foldM f ([], oldParents) $ DMap.toList p
1924− getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParent x)
1925− getInitialSubscribers initialParents subscriber = do
1926− subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1927− let s = subscriber $ return k
1928− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1929− height <- liftIO $ getEventSubscribedHeight parentSubd
1930− return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParent subscription)
1931− return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1932− , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1933− , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1936− destroy :: MergeDestroyFunc k (MergeSubscribedParent x)
1937− destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParent sub) -> unsubscribe sub
1939−{-# INLINE [1] mergeCheapWithMove #-}
1940−mergeCheapWithMove :: forall k x v q. (HasSpiderTimeline x, GCompare k)
1941− => (forall a. q a -> Event x (v a))
1942− -> DynamicS x (PatchDMapWithMove k q)
1943− -> Event x (DMap k v)
1944−mergeCheapWithMove nt = mergeGCheap' _mergeSubscribedParentWithMove_subscription getInitialSubscribers updateMe destroy
1946− updateMe :: MergeUpdateFunc k v x (PatchDMapWithMove k q) (MergeSubscribedParentWithMove x k)
1947− updateMe subscriber heightBagRef oldParents p = do
1948− -- Prepare new parents for insertion
1949− let subscribeParent :: forall a. k a -> Event x (v a) -> EventM x (MergeSubscribedParentWithMove x k a)
1950− subscribeParent k e = do
1951− keyRef <- liftIO $ newIORef k
1952− let s = subscriber $ liftIO $ readIORef keyRef
1953− subscription@(EventSubscription _ subd) <- subscribe e s
1955− newParentHeight <- getEventSubscribedHeight subd
1956− modifyIORef' heightBagRef $ heightBagAdd newParentHeight
1957− return $ MergeSubscribedParentWithMove subscription keyRef
1958− p' <- PatchDMapWithMove.traversePatchDMapWithMoveWithKey (\k q -> subscribeParent k (nt q)) p
1959− -- Collect old parents for deletion and update the keys of moved parents
1960− let moveOrDelete :: forall a. k a -> PatchDMapWithMove.NodeInfo k q a -> MergeSubscribedParentWithMove x k a -> Constant (EventM x (Maybe (EventSubscription x))) a
1961− moveOrDelete _ ni parent = Constant $ case getComposeMaybe $ PatchDMapWithMove._nodeInfo_to ni of
1963− oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $
1964− _mergeSubscribedParentWithMove_subscription parent
1966− liftIO $ modifyIORef heightBagRef $ heightBagRemove oldHeight
1967− return $ Just $ _mergeSubscribedParentWithMove_subscription parent
1969− liftIO $ writeIORef (_mergeSubscribedParentWithMove_key parent) $! toKey
1971− toDelete <- fmap catMaybes $ mapM (\(_ :=> v) -> getConstant v) $ DMap.toList $
1972− DMap.intersectionWithKey moveOrDelete (unPatchDMapWithMove p) oldParents
1974− return (toDelete, applyAlways p' oldParents)
1975− getInitialSubscribers :: MergeInitFunc k v q x (MergeSubscribedParentWithMove x k)
1976− getInitialSubscribers initialParents subscriber = do
1977− subscribers <- forM (DMap.toList initialParents) $ \(k :=> e) -> do
1978− keyRef <- liftIO $ newIORef k
1979− let s = subscriber $ liftIO $ readIORef keyRef
1980− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead (nt e) s
1981− height <- liftIO $ getEventSubscribedHeight parentSubd
1982− return (fmap (k :=>) parentOcc, height, k :=> MergeSubscribedParentWithMove subscription keyRef)
1983− return ( DMap.fromDistinctAscList $ mapMaybe (\(x, _, _) -> x) subscribers
1984− , fmap (\(_, h, _) -> h) subscribers --TODO: Assert that there's no invalidHeight in here
1985− , DMap.fromDistinctAscList $ map (\(_, _, x) -> x) subscribers
1988− destroy :: MergeDestroyFunc k (MergeSubscribedParentWithMove x k)
1989− destroy s = forM_ (DMap.toList s) $ \(_ :=> MergeSubscribedParentWithMove sub _) -> unsubscribe sub
1991−type MergeUpdateFunc k v x p s
1992− = (forall a. EventM x (k a) -> Subscriber x (v a))
1996− -> EventM x ([EventSubscription x], DMap k s)
1998−type MergeGetSubscription x s = forall a. s a -> EventSubscription x
2000−type MergeInitFunc k v q x s
2002− -> (forall a. EventM x (k a) -> Subscriber x (v a))
2003− -> EventM x (DMap k v, [Height], DMap k s)
2005−type MergeDestroyFunc k s
2009−data Merge x k v s = Merge
2010− { _merge_parentsRef :: {-# UNPACK #-} !(IORef (DMap k s))
2011− , _merge_heightBagRef :: {-# UNPACK #-} !(IORef HeightBag)
2012− , _merge_heightRef :: {-# UNPACK #-} !(IORef Height)
2013− , _merge_sub :: {-# UNPACK #-} !(Subscriber x (DMap k v))
2014− , _merge_accumRef :: {-# UNPACK #-} !(IORef (DMap k v))
2017−invalidateMergeHeight :: Merge x k v s -> IO ()
2018−invalidateMergeHeight m = invalidateMergeHeight' (_merge_heightRef m) (_merge_sub m)
2020−invalidateMergeHeight' :: IORef Height -> Subscriber x a -> IO ()
2021−invalidateMergeHeight' heightRef sub = do
2022− oldHeight <- readIORef heightRef
2023− -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
2024− when (oldHeight /= invalidHeight) $ do
2025− writeIORef heightRef $! invalidHeight
2026− subscriberInvalidateHeight sub oldHeight
2028−revalidateMergeHeight :: Merge x k v s -> IO ()
2029−revalidateMergeHeight m = do
2030− currentHeight <- readIORef $ _merge_heightRef m
2032− -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
2033− when (currentHeight == invalidHeight) $ do
2034− heights <- readIORef $ _merge_heightBagRef m
2035− parents <- readIORef $ _merge_parentsRef m
2036− -- When the number of heights in the bag reaches the number of parents, we should have a valid height
2037− case heightBagSize heights `compare` DMap.size parents of
2040− let height = succHeight $ heightBagMax heights
2041− traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2042− writeIORef (_merge_heightRef m) $! height
2043− subscriberRecalculateHeight (_merge_sub m) height
2044− GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show (DMap.size parents) <> ") for Merge"
2046−scheduleMergeSelf :: HasSpiderTimeline x => Merge x k v s -> Height -> EventM x ()
2047−scheduleMergeSelf m height = scheduleMerge' height (_merge_heightRef m) $ do
2048− vals <- liftIO $ readIORef $ _merge_accumRef m
2049− -- Once we're done with this, we can clear it immediately, because if there's a cacheEvent in front of us,
2050− -- it'll handle subsequent subscribers, and if not, we won't get subsequent subscribers
2051− liftIO $ writeIORef (_merge_accumRef m) $! DMap.empty
2052− --TODO: Assert that m is not empty
2053− subscriberPropagate (_merge_sub m) vals
2055−checkCycle :: HasSpiderTimeline x => EventSubscribed x -> EventM x ()
2056−checkCycle subscribed = liftIO $ do
2057− height <- readIORef (eventSubscribedHeightRef subscribed)
2059− -- currentHeight <- getCurrentHeight
2060− -- when (height <= currentHeight) $ if height /= invalidHeight
2062− -- myStack <- liftIO $ whoCreatedIORef undefined --TODO
2063− -- error $ "Height (" ++ show height ++ ") is not greater than current height (" ++ show currentHeight ++ ")\n" ++ unlines (reverse myStack)
2065− when (height == invalidHeight) $
2068− nodesInvolvedInCycle <- walkInvalidHeightParents subscribed
2069− stacks <- forM nodesInvolvedInCycle whoCreatedEventSubscribed
2070− throwIO (EventLoopException stacks)
2072− throwIO EventLoopException
2076−mergeSubscriber :: forall x k v s a. (HasSpiderTimeline x, GCompare k) => EventSubscribed x -> Merge x k v s -> EventM x (k a) -> Subscriber x (v a)
2077−mergeSubscriber subscribed m getKey = Subscriber
2078− { subscriberPropagate = \a -> do
2079− oldM <- liftIO $ readIORef $ _merge_accumRef m
2081− let newM = DMap.insertWith (error "Same key fired multiple times for Merge") k a oldM
2082− tracePropagate (Proxy :: Proxy x) $ " DMap.size oldM = " <> show (DMap.size oldM) <> "; DMap.size newM = " <> show (DMap.size newM)
2083− liftIO $ writeIORef (_merge_accumRef m) $! newM
2084− when (DMap.null oldM) $ do -- Only schedule the firing once
2085− height <- liftIO $ readIORef $ _merge_heightRef m
2086− checkCycle subscribed
2088− scheduleMergeSelf m height
2089− , subscriberInvalidateHeight = \old -> do --TODO: When removing a parent doesn't actually change the height, maybe we can avoid invalidating
2090− modifyIORef' (_merge_heightBagRef m) $ heightBagRemove old
2091− invalidateMergeHeight m
2092− , subscriberRecalculateHeight = \new -> do
2093− modifyIORef' (_merge_heightBagRef m) $ heightBagAdd new
2094− revalidateMergeHeight m
2097−--TODO: Be able to run as much of this as possible promptly
2098−updateMerge :: (HasSpiderTimeline x, GCompare k) => EventSubscribed x -> Merge x k v s -> MergeUpdateFunc k v x p s -> p -> SomeMergeUpdate x
2099−updateMerge subscribed m updateFunc p = SomeMergeUpdate updateMe (invalidateMergeHeight m) (revalidateMergeHeight m)
2100− where updateMe = do
2101− oldParents <- liftIO $ readIORef $ _merge_parentsRef m
2102− (subscriptionsToKill, newParents) <- updateFunc (mergeSubscriber subscribed m) (_merge_heightBagRef m) oldParents p
2103− liftIO $ writeIORef (_merge_parentsRef m) $! newParents
2104− return subscriptionsToKill
2106−{-# INLINE mergeGCheap' #-}
2107−mergeGCheap' :: forall k v x p s q. (HasSpiderTimeline x, GCompare k, PatchTarget p ~ DMap k q)
2108− => MergeGetSubscription x s -> MergeInitFunc k v q x s -> MergeUpdateFunc k v x p s -> MergeDestroyFunc k s -> DynamicS x p -> Event x (DMap k v)
2109−mergeGCheap' getParent getInitialSubscribers updateFunc destroy d = Event $ \sub -> do
2110− initialParents <- readBehaviorUntracked $ dynamicCurrent d
2111− accumRef <- liftIO $ newIORef $ error "merge: accumRef not yet initialized"
2112− heightRef <- liftIO $ newIORef $ error "merge: heightRef not yet initialized"
2113− heightBagRef <- liftIO $ newIORef $ error "merge: heightBagRef not yet initialized"
2114− parentsRef :: IORef (DMap k s) <- liftIO $ newIORef $ error "merge: parentsRef not yet initialized"
2115− changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2117− let subscribed = EventSubscribed
2118− { eventSubscribedHeightRef = heightRef
2119− , eventSubscribedRetained = toAny (parentsRef, changeSubdRef)
2121− , eventSubscribedGetParents = do
2122− let getParent' (_ :=> v) = _eventSubscription_subscribed (getParent v)
2123− fmap getParent' . DMap.toList <$> readIORef parentsRef
2124− , eventSubscribedHasOwnHeightRef = False
2125− , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2130− { _merge_parentsRef = parentsRef
2131− , _merge_heightBagRef = heightBagRef
2132− , _merge_heightRef = heightRef
2134− , _merge_accumRef = accumRef
2136− (dm, heights, initialParentState) <- getInitialSubscribers initialParents $ mergeSubscriber subscribed m
2137− let myHeightBag = heightBagFromList $ filter (/= invalidHeight) heights
2138− myHeight = if invalidHeight `elem` heights
2140− else succHeight $ heightBagMax myHeightBag
2141− currentHeight <- getCurrentHeight
2142− let (occ, accum) = if currentHeight >= myHeight -- If we should have fired by now
2143− then (if DMap.null dm then Nothing else Just dm, DMap.empty)
2145− unless (DMap.null accum) $ scheduleMergeSelf m myHeight
2146− liftIO $ writeIORef accumRef $! accum
2147− liftIO $ writeIORef heightRef $! myHeight
2148− liftIO $ writeIORef heightBagRef $! myHeightBag
2149− liftIO $ writeIORef parentsRef $! initialParentState
2150− defer $ SomeMergeInit $ do
2151− let changeSubscriber = Subscriber
2152− { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2153− tracePropagate (Proxy :: Proxy x) "SubscriberMerge/Change"
2154− defer $ updateMerge subscribed m updateFunc a
2155− , subscriberInvalidateHeight = \_ -> return ()
2156− , subscriberRecalculateHeight = \_ -> return ()
2158− (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2159− forM_ change $ \c -> defer $ updateMerge subscribed m updateFunc c
2160− -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2161− -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2162− -- its subscription.
2163− liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
2164− let unsubscribeAll = destroy =<< readIORef parentsRef
2166− return (EventSubscription unsubscribeAll subscribed, occ)
2169−mergeInt :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2170−mergeInt = cacheEvent . mergeIntCheap
2172−{-# INLINABLE mergeIntCheap #-}
2173−mergeIntCheap :: forall x a. (HasSpiderTimeline x) => DynamicS x (PatchIntMap (Event x a)) -> Event x (IntMap a)
2174−mergeIntCheap d = Event $ \sub -> do
2175− initialParents <- readBehaviorUntracked $ dynamicCurrent d
2176− accum <- liftIO $ FastMutableIntMap.newEmpty
2177− heightRef <- liftIO $ newIORef zeroHeight
2178− heightBagRef <- liftIO $ newIORef heightBagEmpty
2179− parents <- liftIO $ FastMutableIntMap.newEmpty
2180− changeSubdRef <- liftIO $ newIORef $ error "getMergeSubscribed: changeSubdRef not yet initialized"
2181− let subscribed = EventSubscribed
2182− { eventSubscribedHeightRef = heightRef
2183− , eventSubscribedRetained = toAny (parents, changeSubdRef)
2185− , eventSubscribedGetParents = fmap (_eventSubscription_subscribed . snd) <$> FastMutableIntMap.toList parents
2186− , eventSubscribedHasOwnHeightRef = False
2187− , eventSubscribedWhoCreated = whoCreatedIORef heightRef
2190− let scheduleSelf = do
2191− height <- liftIO $ readIORef $ heightRef
2192− scheduleMerge' height heightRef $ do
2193− vals <- liftIO $ FastMutableIntMap.getFrozenAndClear accum
2194− subscriberPropagate sub vals
2195− invalidateMyHeight = invalidateMergeHeight' heightRef sub
2196− recalculateMyHeight = do
2197− currentHeight <- readIORef heightRef
2198− when (currentHeight == invalidHeight) $ do --TODO: This will almost always be true; can we get rid of this check and just proceed to the next one always?
2199− heights <- readIORef heightBagRef
2200− numParents <- FastMutableIntMap.size parents
2201− case heightBagSize heights `compare` numParents of
2204− let height = succHeight $ heightBagMax heights
2205− traceInvalidateHeight $ "recalculateSubscriberHeight: height: " <> show height
2206− writeIORef heightRef $! height
2207− subscriberRecalculateHeight sub height
2208− GT -> error $ "revalidateMergeHeight: more heights (" <> show (heightBagSize heights) <> ") than parents (" <> show numParents <> ") for Merge"
2209− mySubscriber k = Subscriber
2210− { subscriberPropagate = \a -> do
2211− checkCycle subscribed
2213− wasEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2214− liftIO $ FastMutableIntMap.insert accum k a
2215− when wasEmpty scheduleSelf
2216− , subscriberInvalidateHeight = \old -> do
2217− modifyIORef' heightBagRef $ heightBagRemove old
2219− , subscriberRecalculateHeight = \new -> do
2220− modifyIORef' heightBagRef $ heightBagAdd new
2221− recalculateMyHeight
2223− forM_ (IntMap.toList initialParents) $ \(k, p) -> do
2224− (subscription@(EventSubscription _ parentSubd), parentOcc) <- subscribeAndRead p $ mySubscriber k
2226− forM_ parentOcc $ FastMutableIntMap.insert accum k
2227− FastMutableIntMap.insert parents k subscription
2228− height <- getEventSubscribedHeight parentSubd
2229− if height == invalidHeight
2230− then writeIORef heightRef invalidHeight
2232− modifyIORef' heightBagRef $ heightBagAdd height
2233− modifyIORef' heightRef $ \oldHeight ->
2234− if oldHeight == invalidHeight
2236− else max (succHeight height) oldHeight
2237− myHeight <- liftIO $ readIORef heightRef
2238− currentHeight <- getCurrentHeight
2239− isEmpty <- liftIO $ FastMutableIntMap.isEmpty accum
2240− occ <- if currentHeight >= myHeight -- If we should have fired by now
2242− then return Nothing
2243− else liftIO $ Just <$> FastMutableIntMap.getFrozenAndClear accum
2244− else do when (not isEmpty) scheduleSelf -- We have things accumulated, but we shouldn't have fired them yet
2246− defer $ SomeMergeInit $ do
2247− let updateMe a = SomeMergeUpdate u invalidateMyHeight recalculateMyHeight
2250− let f k newParent = do
2251− subscription@(EventSubscription _ subd) <- subscribe newParent $ mySubscriber k
2252− newParentHeight <- liftIO $ getEventSubscribedHeight subd
2253− liftIO $ modifyIORef' heightBagRef $ heightBagAdd newParentHeight
2254− return subscription
2255− newSubscriptions <- FastMutableIntMap.traverseIntMapPatchWithKey f a
2256− oldParents <- liftIO $ FastMutableIntMap.applyPatch parents newSubscriptions
2257− liftIO $ for_ oldParents $ \oldParent -> do
2258− oldParentHeight <- getEventSubscribedHeight $ _eventSubscription_subscribed oldParent
2260− print ("updateMe", oldParentHeight)
2261− modifyIORef' heightBagRef $ heightBagRemove oldParentHeight
2262− return $ IntMap.elems oldParents
2263− let changeSubscriber = Subscriber
2264− { subscriberPropagate = \a -> {-# SCC "traverseMergeChange" #-} do
2265− tracePropagate (Proxy :: Proxy x) $ "SubscriberMergeInt/Change"
2267− , subscriberInvalidateHeight = \_ -> return ()
2268− , subscriberRecalculateHeight = \_ -> return ()
2270− (changeSubscription, change) <- subscribeAndRead (dynamicUpdated d) changeSubscriber
2271− forM_ change $ \c -> defer $ updateMe c
2272− -- We explicitly hold on to the unsubscribe function from subscribing to the update event.
2273− -- If we don't do this, there are certain cases where mergeCheap will fail to properly retain
2274− -- its subscription.
2275− liftIO $ writeIORef changeSubdRef (changeSubscriber, changeSubscription)
2276− let unsubscribeAll = traverse_ unsubscribe =<< FastMutableIntMap.getFrozenAndClear parents
2279− return (EventSubscription unsubscribeAll subscribed, occ)
2281newtype EventSelector x k = EventSelector { select :: forall a. k a -> Event x a }
1680newtype EventSelector x k = EventSelector { select :: forall a. k a -> Event x a }
2282−newtype EventSelectorG x k v = EventSelectorG { selectG :: forall a. k a -> Event x (v a) }
2284−fanG :: (HasSpiderTimeline x, GCompare k) => Event x (DMap k v) -> EventSelectorG x k v
1682+fan :: GCompare k => Event x (DMap k Identity) -> EventSelector x k
2285−fanG e = unsafePerformIO $ do
1683+fan e =
2286− ref <- newIORef Nothing
2287 let f = Fan
1684 let f = Fan
2288 { fanParent = e
1685 { fanParent = e
2289− , fanSubscribed = ref
1686+ , fanSubscribed = unsafeNewIORef e Nothing
2291− pure $ EventSelectorG $ \k -> eventFan k f
1688+ in EventSelector $ \k -> eventFan k f
2293−runHoldInits :: HasSpiderTimeline x => IORef [SomeHoldInit x] -> IORef [SomeDynInit x] -> IORef [SomeMergeInit x] -> EventM x ()
1690+runHoldInits :: IORef [SomeHoldInit x] -> IORef [SomeMergeInit x] -> EventM x ()
2294−runHoldInits holdInitRef dynInitRef mergeInitRef = do
1691+runHoldInits holdInitRef mergeInitRef = do
2295 holdInits <- liftIO $ readIORef holdInitRef
1692 holdInits <- liftIO $ readIORef holdInitRef
2296− dynInits <- liftIO $ readIORef dynInitRef
2297 mergeInits <- liftIO $ readIORef mergeInitRef
1693 mergeInits <- liftIO $ readIORef mergeInitRef
2298− unless (null holdInits && null dynInits && null mergeInits) $ do
1694+ unless (null holdInits && null mergeInits) $ do
2299 liftIO $ writeIORef holdInitRef []
1695 liftIO $ writeIORef holdInitRef []
2300− liftIO $ writeIORef dynInitRef []
2301 liftIO $ writeIORef mergeInitRef []
1696 liftIO $ writeIORef mergeInitRef []
2302 mapM_ initHold holdInits
1697 mapM_ initHold holdInits
2303− mapM_ initDyn dynInits
1698+ mapM_ initMerge mergeInits
2304− mapM_ unSomeMergeInit mergeInits
2305− runHoldInits holdInitRef dynInitRef mergeInitRef
1699+ runHoldInits holdInitRef mergeInitRef
2307−initHold :: HasSpiderTimeline x => SomeHoldInit x -> EventM x ()
1701+initHold :: SomeHoldInit x -> EventM x ()
2308initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
1702initHold (SomeHoldInit h) = void $ getHoldEventSubscription h
2310−initDyn :: HasSpiderTimeline x => SomeDynInit x -> EventM x ()
1704+initMerge :: SomeMergeInit x -> EventM x ()
2311−initDyn (SomeDynInit d) = void $ getDynHold d
1705+initMerge (SomeMergeInit subscribed changed) = do
1706+ changeSub <- liftIO $ newSubscriberMergeChange subscribed
1707+ (EventSubscription _ changeSubd, change) <- subscribeAndRead changed changeSub
1708+ forM_ change $ \c -> defer $ SomeMergeUpdate c subscribed
1709+ liftIO $ writeIORef (mergeSubscribedChange subscribed) (changeSub, changeSubd)
2313−newEventEnv :: IO (EventEnv x)
1711+-- | Run an event action outside of a frame
2314−newEventEnv = do
1712+runFrame :: forall x a. EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
1713+runFrame a = SpiderHost $ ask >>= \spiderTimeline -> lift $ do
1714+ -- Clear out pending unsubscriptions; these will need to happen eventually anyway, and might cause us a lot of extra work during the frame, so get rid of them now
1715+ pendingCleanups <- atomicModifyIORef (_spiderTimeline_cleanups spiderTimeline) $ \x -> ([], x)
1716+ {-# SCC "cleanups" #-} sequence_ pendingCleanups
2315 toAssignRef <- newIORef [] -- This should only actually get used when events are firing
1717 toAssignRef <- newIORef [] -- This should only actually get used when events are firing
2316 holdInitRef <- newIORef []
1718 holdInitRef <- newIORef []
2317− dynInitRef <- newIORef []
2318 mergeUpdateRef <- newIORef []
1719 mergeUpdateRef <- newIORef []
2319 mergeInitRef <- newIORef []
1720 mergeInitRef <- newIORef []
2320 heightRef <- newIORef zeroHeight
1721 heightRef <- newIORef zeroHeight
2321 toClearRef <- newIORef []
1722 toClearRef <- newIORef []
2322− toClearIntRef <- newIORef []
2323 toClearRootRef <- newIORef []
1723 toClearRootRef <- newIORef []
2324 coincidenceInfosRef <- newIORef []
1724 coincidenceInfosRef <- newIORef []
2325− delayedRef <- newIORef IntMap.empty
1725+ delayedRef <- liftIO $ newIORef IntMap.empty
2326− return $ EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef
1726+ let env = EventEnv spiderTimeline toAssignRef holdInitRef mergeUpdateRef mergeInitRef toClearRef toClearRootRef heightRef coincidenceInfosRef delayedRef
2328−clearEventEnv :: EventEnv x -> IO ()
2329−clearEventEnv (EventEnv toAssignRef holdInitRef dynInitRef mergeUpdateRef mergeInitRef toClearRef toClearIntRef toClearRootRef heightRef coincidenceInfosRef delayedRef) = do
2330− writeIORef toAssignRef []
2331− writeIORef holdInitRef []
2332− writeIORef dynInitRef []
2333− writeIORef mergeUpdateRef []
2334− writeIORef mergeInitRef []
2335− writeIORef heightRef zeroHeight
2336− writeIORef toClearRef []
2337− writeIORef toClearIntRef []
2338− writeIORef toClearRootRef []
2339− writeIORef coincidenceInfosRef []
2340− writeIORef delayedRef IntMap.empty
2342−-- | Run an event action outside of a frame
2343−runFrame :: forall x a. HasSpiderTimeline x => EventM x a -> SpiderHost x a --TODO: This function also needs to hold the mutex
2344−runFrame a = SpiderHost $ do
2345− let env = _spiderTimeline_eventEnv $ unSTE (spiderTimeline :: SpiderTimelineEnv x)
2346 let go = do
1727 let go = do
2347 result <- a
1728 result <- a
2348− runHoldInits (eventEnvHoldInits env) (eventEnvDynInits env) (eventEnvMergeInits env) -- This must happen before doing the assignments, in case subscribing a Hold causes existing Holds to be read by the newly-propagated events
1729+ runHoldInits holdInitRef mergeInitRef -- This must happen before doing the assignments, in case subscribing a Hold causes existing Holds to be read by the newly-propagated events
2349 return result
1730 return result
2350− result <- runEventM go
1731+ result <- runEventM go env
2351− toClear <- readIORef $ eventEnvClears env
1732+ toClear <- readIORef toClearRef
2352− forM_ toClear $ \(Some (Clear ref)) -> {-# SCC "clear" #-} writeIORef ref Nothing
1733+ forM_ toClear $ \(SomeClear ref) -> {-# SCC "clear" #-} writeIORef ref Nothing
2353− toClearInt <- readIORef $ eventEnvIntClears env
2354− forM_ toClearInt $ \(Some (IntClear ref)) -> {-# SCC "intClear" #-} writeIORef ref $! IntMap.empty
2355− toClearRoot <- readIORef $ eventEnvRootClears env
1734+ toClearRoot <- readIORef toClearRootRef
2356− forM_ toClearRoot $ \(Some (RootClear ref)) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
1735+ forM_ toClearRoot $ \(SomeRootClear ref) -> {-# SCC "rootClear" #-} writeIORef ref $! DMap.empty
2357− toAssign <- readIORef $ eventEnvAssignments env
1736+ toAssign <- readIORef toAssignRef
2358 toReconnectRef <- newIORef []
1737 toReconnectRef <- newIORef []
2359− coincidenceInfos <- readIORef $ eventEnvResetCoincidences env
1738+ coincidenceInfos <- readIORef coincidenceInfosRef
2360 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
1739 forM_ toAssign $ \(SomeAssignment vRef iRef v) -> {-# SCC "assignment" #-} do
2361 writeIORef vRef v
1740 writeIORef vRef v
2362− traceInvalidate $ "Invalidating Hold"
1741+ when debugInvalidate $ putStrLn $ "Invalidating Hold"
2363 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
1742 writeIORef iRef =<< evaluate =<< invalidate toReconnectRef =<< readIORef iRef
2364− mergeUpdates <- readIORef $ eventEnvMergeUpdates env
1743+ mergeUpdates <- readIORef mergeUpdateRef
2365− writeIORef (eventEnvMergeUpdates env) []
1744+ writeIORef mergeUpdateRef []
2366− tracePropagate (Proxy::Proxy x) $ "Updating merges"
1745+ let updateMerge :: SomeMergeUpdate x -> IO [SomeEventSubscription x]
1746+ updateMerge (SomeMergeUpdate (R.PatchDMap p :: R.PatchDMap k (Event x)) m) = do
1747+ oldParents <- readIORef $ mergeSubscribedParents m
1748+ let f (subscriptionsToKill, ps) (k :=> R.ComposeMaybe me) = do
1749+ (mOldSubd, newPs) <- case me of
1750+ Nothing -> return $ DMap.updateLookupWithKey (\_ _ -> Nothing) k ps
1752+ s <- liftIO $ newSubscriberMerge k m
1753+ subscription@(EventSubscription _ subd) <- subscribe e s
1754+ newParentHeight <- liftIO $ getEventSubscribedHeight subd
1755+ let newParent = MergeSubscribedParent subscription s
1756+ liftIO $ addMergeHeight newParentHeight m
1757+ return $ DMap.insertLookupWithKey' (\_ new _ -> new) k newParent ps
1758+ forM_ mOldSubd $ \oldSubd -> do
1759+ oldHeight <- liftIO $ getEventSubscribedHeight $ _eventSubscription_subscribed $ mergeSubscribedParentSubscription oldSubd
1760+ liftIO $ removeMergeHeight oldHeight m
1761+ return (maybeToList (SomeEventSubscription . mergeSubscribedParentSubscription <$> mOldSubd) ++ subscriptionsToKill, newPs)
1762+ (subscriptionsToKill, newParents) <- flip runEventM env $ foldM f ([], oldParents) $ DMap.toList p --TODO: I think this runEventM is OK, since no events are firing at this time, but it might not be
1763+ writeIORef (mergeSubscribedParents m) $! newParents
1764+ return subscriptionsToKill
1765+ when debugPropagate $ putStrLn "Updating merges"
2367− mergeSubscriptionsToKill <- runEventM $ concat <$> mapM _someMergeUpdate_update mergeUpdates
1766+ mergeSubscriptionsToKill <- concat <$> mapM updateMerge mergeUpdates
2368− tracePropagate (Proxy::Proxy x) $ "Updating merges done"
1767+ when debugPropagate $ putStrLn "Updating merges done"
2369 toReconnect <- readIORef toReconnectRef
1768 toReconnect <- readIORef toReconnectRef
2371 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1769 switchSubscriptionsToKill <- forM toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2372 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
1770 oldSubscription <- readIORef $ switchSubscribedCurrentParent subscribed
2373 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
1771 wi <- readIORef $ switchSubscribedOwnWeakInvalidator subscribed
2374− traceInvalidate $ "Finalizing invalidator for Switch" <> showNodeId subscribed
1772+ when debugInvalidate $ putStrLn $ "Finalizing invalidator for Switch" <> showNodeId subscribed
2375 finalize wi
1773 finalize wi
2376 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
1774 i <- evaluate $ switchSubscribedOwnInvalidator subscribed
2377 wi' <- mkWeakPtrWithDebug i "wi'"
1775 wi' <- mkWeakPtrWithDebug i "wi'"
2378 writeIORef (switchSubscribedOwnWeakInvalidator subscribed) $! wi'
1776 writeIORef (switchSubscribedOwnWeakInvalidator subscribed) $! wi'
2379 writeIORef (switchSubscribedBehaviorParents subscribed) []
1777 writeIORef (switchSubscribedBehaviorParents subscribed) []
2380− writeIORef (eventEnvHoldInits env) [] --TODO: Should we reuse this?
1778+ writeIORef holdInitRef [] --TODO: Should we reuse this?
2381− e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) $ eventEnvHoldInits env
1779+ e <- runBehaviorM (readBehaviorTracked (switchSubscribedParent subscribed)) (Just (wi', switchSubscribedBehaviorParents subscribed)) holdInitRef
2382− runEventM $ runHoldInits (eventEnvHoldInits env) (eventEnvDynInits env) (eventEnvMergeInits env) --TODO: Is this actually OK? It seems like it should be, since we know that no events are firing at this point, but it still seems inelegant
1780+ runEventM (runHoldInits holdInitRef mergeInitRef) env --TODO: Is this actually OK? It seems like it should be, since we know that no events are firing at this point, but it still seems inelegant
2383 --TODO: Make sure we touch the pieces of the SwitchSubscribed at the appropriate times
1781 --TODO: Make sure we touch the pieces of the SwitchSubscribed at the appropriate times
2384 sub <- newSubscriberSwitch subscribed
1782 sub <- newSubscriberSwitch subscribed
2385− subscription <- unSpiderHost $ runFrame $ {-# SCC "subscribeSwitch" #-} subscribe e sub --TODO: Assert that the event isn't firing --TODO: This should not loop because none of the events should be firing, but still, it is inefficient
1783+ subscription <- runReaderT (unSpiderHost (runFrame ({-# SCC "subscribeSwitch" #-} subscribe e sub))) spiderTimeline --TODO: Assert that the event isn't firing --TODO: This should not loop because none of the events should be firing, but still, it is inefficient
2387 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
1785 stackTrace <- liftIO $ fmap renderStack $ ccsToStrings =<< (getCCSOf $! switchSubscribedParent subscribed)
2388− liftIO $ debugStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
1786+ liftIO $ putStrLn $ (++stackTrace) $ "subd' subscribed to " ++ case e of
2389 EventRoot _ -> "EventRoot"
1787 EventRoot _ -> "EventRoot"
2390 EventNever -> "EventNever"
1788 EventNever -> "EventNever"
2391 _ -> "something else"
1789 _ -> "something else"
2393 writeIORef (switchSubscribedCurrentParent subscribed) $! subscription
1791 writeIORef (switchSubscribedCurrentParent subscribed) $! subscription
2394− return oldSubscription
1792+ return $ SomeEventSubscription oldSubscription
2395− liftIO $ mapM_ unsubscribe mergeSubscriptionsToKill
1793+ forM_ mergeSubscriptionsToKill $ \(SomeEventSubscription oldSubscription) -> liftIO $ unsubscribe oldSubscription
2396− liftIO $ mapM_ unsubscribe switchSubscriptionsToKill
1794+ forM_ switchSubscriptionsToKill $ \(SomeEventSubscription oldSubscription) -> liftIO $ unsubscribe oldSubscription
2397 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
1795 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> {-# SCC "switchSubscribed" #-} do
2398 EventSubscription _ subd' <- readIORef $ switchSubscribedCurrentParent subscribed
1796 EventSubscription _ subd' <- readIORef $ switchSubscribedCurrentParent subscribed
2399 parentHeight <- getEventSubscribedHeight subd'
1797 parentHeight <- getEventSubscribedHeight subd'
2400 myHeight <- readIORef $ switchSubscribedHeight subscribed
1798 myHeight <- readIORef $ switchSubscribedHeight subscribed
2401 when (parentHeight /= myHeight) $ do
1799 when (parentHeight /= myHeight) $ do
2402 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
1800 writeIORef (switchSubscribedHeight subscribed) $! invalidHeight
2403− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1801+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ invalidateSubscriberHeight myHeight
1802+ forM_ mergeUpdates $ \(SomeMergeUpdate _ m) -> do
2404− mapM_ _someMergeUpdate_invalidateHeight mergeUpdates --TODO: In addition to when the patch is completely empty, we should also not run this if it has some Nothing values, but none of them have actually had any effect; potentially, we could even check for Just values with no effect (e.g. by comparing their IORefs and ignoring them if they are unchanged); actually, we could just check if the new height is different
1803+ invalidateMergeHeight m --TODO: In addition to when the patch is completely empty, we should also not run this if it has some Nothing values, but none of them have actually had any effect; potentially, we could even check for Just values with no effect (e.g. by comparing their IORefs and ignoring them if they are unchanged); actually, we could just check if the new height is different
2405 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
1804 forM_ coincidenceInfos $ \(SomeResetCoincidence subscription mcs) -> do
2406 unsubscribe subscription
1805 unsubscribe subscription
2407 mapM_ invalidateCoincidenceHeight mcs
1806 mapM_ invalidateCoincidenceHeight mcs
2408 forM_ coincidenceInfos $ \(SomeResetCoincidence _ mcs) -> mapM_ recalculateCoincidenceHeight mcs
1807 forM_ coincidenceInfos $ \(SomeResetCoincidence _ mcs) -> mapM_ recalculateCoincidenceHeight mcs
2409− mapM_ _someMergeUpdate_recalculateHeight mergeUpdates
1808+ forM_ mergeUpdates $ \(SomeMergeUpdate _ m) -> revalidateMergeHeight m
2410 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> do
1809 forM_ toReconnect $ \(SomeSwitchSubscribed subscribed) -> do
2411 height <- calculateSwitchHeight subscribed
1810 height <- calculateSwitchHeight subscribed
2412 updateSwitchHeight height subscribed
1811 updateSwitchHeight height subscribed
@@ -2436,12 +1835,50 @@ succHeight h@(Height a) =
2436 then invalidHeight
1835 then invalidHeight
2437 else Height $ succ a
1836 else Height $ succ a
1838+removeMergeHeight :: Height -> MergeSubscribed x k -> IO ()
1839+removeMergeHeight oldParentHeight subscribed = do
1840+ when debugInvalidateHeight $ putStrLn $ "removeMergeHeight: " <> show oldParentHeight <> " Merge" <> showNodeId subscribed
1841+ oldHeights <- readIORef $ mergeSubscribedHeightBag subscribed
1842+ let newHeights = heightBagRemove oldParentHeight oldHeights
1843+ writeIORef (mergeSubscribedHeightBag subscribed) $! newHeights
1845+invalidateMergeHeight :: MergeSubscribed x k -> IO ()
1846+invalidateMergeHeight subscribed = do
1847+ oldHeight <- readIORef $ mergeSubscribedHeight subscribed
1848+ -- If the height used to be valid, it must be invalid now; we should never have *more* heights than we have parents
1849+ when (oldHeight /= invalidHeight) $ do
1850+ writeIORef (mergeSubscribedHeight subscribed) $! invalidHeight
1851+ WeakBag.traverse (mergeSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1853+addMergeHeight :: Height -> MergeSubscribed x k -> IO ()
1854+addMergeHeight newParentHeight subscribed = do
1855+ when debugInvalidateHeight $ putStrLn $ "addMergeHeight: " <> show newParentHeight <> " Merge" <> showNodeId subscribed
1856+ oldHeights <- readIORef $ mergeSubscribedHeightBag subscribed
1857+ let newHeights = heightBagAdd newParentHeight oldHeights
1858+ writeIORef (mergeSubscribedHeightBag subscribed) $! newHeights
1860+revalidateMergeHeight :: MergeSubscribed x k -> IO ()
1861+revalidateMergeHeight subscribed = do
1862+ currentHeight <- readIORef $ mergeSubscribedHeight subscribed
1863+ when (currentHeight == invalidHeight) $ do -- revalidateMergeHeight may be called multiple times; perhaps the's a way to finesse it to avoid this check
1864+ heights <- readIORef $ mergeSubscribedHeightBag subscribed
1865+ parents <- readIORef $ mergeSubscribedParents subscribed
1866+ -- When the number of heights in the bag reaches the number of parents, we should have a valid height
1867+ case heightBagSize heights `compare` DMap.size parents of
1870+ let height = succHeight $ heightBagMax heights
1871+ when debugInvalidateHeight $ putStrLn $ "recalculateSubscriberHeight: height: " <> show height
1872+ writeIORef (mergeSubscribedHeight subscribed) $! height
1873+ WeakBag.traverse (mergeSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1874+ GT -> error $ "revalidateMergeHeight: more heights than parents for Merge" <> showNodeId subscribed
2439invalidateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1876invalidateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
2440invalidateCoincidenceHeight subscribed = do
1877invalidateCoincidenceHeight subscribed = do
2441 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
1878 oldHeight <- readIORef $ coincidenceSubscribedHeight subscribed
2442 when (oldHeight /= invalidHeight) $ do
1879 when (oldHeight /= invalidHeight) $ do
2443 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
1880 writeIORef (coincidenceSubscribedHeight subscribed) $! invalidHeight
2444− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
1881+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ invalidateSubscriberHeight oldHeight
2446updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
1883updateSwitchHeight :: Height -> SwitchSubscribed x a -> IO ()
2447updateSwitchHeight new subscribed = do
1884updateSwitchHeight new subscribed = do
@@ -2449,7 +1886,7 @@ updateSwitchHeight new subscribed = do
2449 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
1886 when (oldHeight == invalidHeight) $ do --TODO: This 'when' should probably be an assertion
2450 when (new /= invalidHeight) $ do --TODO: This 'when' should probably be an assertion
1887 when (new /= invalidHeight) $ do --TODO: This 'when' should probably be an assertion
2451 writeIORef (switchSubscribedHeight subscribed) $! new
1888 writeIORef (switchSubscribedHeight subscribed) $! new
2452− WeakBag.traverse_ (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
1889+ WeakBag.traverse (switchSubscribedSubscribers subscribed) $ recalculateSubscriberHeight new
2454recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
1891recalculateCoincidenceHeight :: CoincidenceSubscribed x a -> IO ()
2455recalculateCoincidenceHeight subscribed = do
1892recalculateCoincidenceHeight subscribed = do
@@ -2458,7 +1895,7 @@ recalculateCoincidenceHeight subscribed = do
2458 height <- calculateCoincidenceHeight subscribed
1895 height <- calculateCoincidenceHeight subscribed
2459 when (height /= invalidHeight) $ do
1896 when (height /= invalidHeight) $ do
2460 writeIORef (coincidenceSubscribedHeight subscribed) $! height
1897 writeIORef (coincidenceSubscribedHeight subscribed) $! height
2461− WeakBag.traverse_ (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
1898+ WeakBag.traverse (coincidenceSubscribedSubscribers subscribed) $ recalculateSubscriberHeight height
2463calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
1900calculateSwitchHeight :: SwitchSubscribed x a -> IO Height
2464calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
1901calculateSwitchHeight subscribed = getEventSubscribedHeight . _eventSubscription_subscribed =<< readIORef (switchSubscribedCurrentParent subscribed)
@@ -2497,170 +1934,183 @@ invalidate toReconnectRef wis = do
2497-- Reflex integration
1934-- Reflex integration
2498--------------------------------------------------------------------------------
1935--------------------------------------------------------------------------------
1937+-- | The default, global Spider environment
1938+type Spider = SpiderTimeline Global
2500-- | Designates the default, global Spider timeline
1940-- | Designates the default, global Spider timeline
1943+{-# NOINLINE globalSpiderTimeline #-}
1944+globalSpiderTimeline :: SpiderTimeline Global
1945+globalSpiderTimeline = unsafePerformIO unsafeNewSpiderTimeline
1947+-- | Stores all global data relevant to a particular Spider timeline; only one
1948+-- value should exist for each type @x@
2501−data SpiderTimeline x
1949+data SpiderTimeline x = SpiderTimeline
1950+ { _spiderTimeline_toUnsubscribe :: !(IORef [SomeEventSubscription x])
1951+ , _spiderTimeline_lock :: !(MVar ())
1952+ , _spiderTimeline_cleanups :: !(IORef [IO ()])
1954+ , _spiderTimeline_depth :: !(IORef Int)
2502type role SpiderTimeline nominal
1957type role SpiderTimeline nominal
2504−-- | The default, global Spider environment
1959+instance GEq SpiderTimeline where
2505−type Spider = SpiderTimeline Global
1960+ a `geq` b = if _spiderTimeline_lock a == _spiderTimeline_lock b
1961+ then Just $ unsafeCoerce Refl -- This unsafeCoerce is safe because the same SpiderTimeline can't have two different 'x' arguments
2507−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (EventM x) where
1964+unsafeNewSpiderTimeline :: forall x. IO (SpiderTimeline x)
2508− {-# INLINABLE sample #-}
1965+unsafeNewSpiderTimeline = do
2509− sample (SpiderBehavior b) = readBehaviorUntracked b
1966+ toUnsubscribe <- newIORef []
1968+ cleanups <- newIORef []
1970+ depthRef <- newIORef 0
1972+ return $ SpiderTimeline
1973+ { _spiderTimeline_toUnsubscribe = toUnsubscribe
1974+ , _spiderTimeline_lock = lock
1975+ , _spiderTimeline_cleanups = cleanups
1977+ , _spiderTimeline_depth = depthRef
2511−instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (EventM x) where
1981+-- | Create a new SpiderTimeline
2512− {-# INLINABLE hold #-}
1982+newSpiderTimeline :: IO (Some SpiderTimeline)
2513− hold = holdSpiderEventM
1983+newSpiderTimeline = withSpiderTimeline (pure . Some.This)
2514− {-# INLINABLE holdDyn #-}
2515− holdDyn = holdDynSpiderEventM
2516− {-# INLINABLE holdIncremental #-}
2517− holdIncremental = holdIncrementalSpiderEventM
2518− {-# INLINABLE buildDynamic #-}
2519− buildDynamic = buildDynamicSpiderEventM
2520− {-# INLINABLE headE #-}
2521− headE = R.slowHeadE
2522−-- headE (SpiderEvent e) = SpiderEvent <$> Reflex.Spider.Internal.headE e
2523− {-# INLINABLE now #-}
2524− now = nowSpiderEventM
2526−instance Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPullM x) where
2527− {-# INLINABLE sample #-}
2528− sample = coerce . readBehaviorTracked . unSpiderBehavior
2530−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderPushM x) where
1985+-- | Pass a new timeline to the given function.
2531− {-# INLINABLE sample #-}
1986+withSpiderTimeline :: (forall x. SpiderTimeline x -> IO r) -> IO r
2532− sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
1987+withSpiderTimeline k = unsafeNewSpiderTimeline >>= k
2534−instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderPushM x) where
1989+newtype SpiderPullM x a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2535− {-# INLINABLE hold #-}
1990+
2536− hold v0 e = Reflex.Class.current <$> Reflex.Class.holdDyn v0 e
1991+newtype SpiderPushM x a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2537− {-# INLINABLE holdDyn #-}
2538− holdDyn v0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce e
2539− {-# INLINABLE holdIncremental #-}
2540− holdIncremental v0 (SpiderEvent e) = SpiderPushM $ SpiderIncremental . dynamicHold <$> Reflex.Spider.Internal.hold v0 e
2541− {-# INLINABLE buildDynamic #-}
2542− buildDynamic getV0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce e
2543− {-# INLINABLE headE #-}
2544− headE = R.slowHeadE
2545−-- headE (SpiderEvent e) = SpiderPushM $ SpiderEvent <$> Reflex.Spider.Internal.headE e
2546− {-# INLINABLE now #-}
2547− now = SpiderPushM nowSpiderEventM
1993+instance Functor (R.Dynamic (SpiderTimeline x)) where
1994+ fmap f = SpiderDynamic . newMapDyn f . unSpiderDynamic
1996+instance Applicative (R.Dynamic (SpiderTimeline x)) where
1997+ pure = SpiderDynamic . dynamicConst
1998+ SpiderDynamic a <*> SpiderDynamic b = SpiderDynamic $ zipDynWith ($) a b
2550−instance HasSpiderTimeline x => Monad (Reflex.Class.Dynamic (SpiderTimeline x)) where
2002+instance Monad (R.Dynamic (SpiderTimeline x)) where
2551 {-# INLINE return #-}
2003 {-# INLINE return #-}
2552 return = pure
2004 return = pure
2553 {-# INLINE (>>=) #-}
2005 {-# INLINE (>>=) #-}
2554 x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
2006 x >>= f = SpiderDynamic $ dynamicDynIdentity $ newJoinDyn $ newMapDyn (unSpiderDynamic . f) $ unSpiderDynamic x
2555 {-# INLINE (>>) #-}
2007 {-# INLINE (>>) #-}
2556− (>>) = (*>)
2008+ _ >> y = y
2557−#if !MIN_VERSION_base(4,13,0)
2558 {-# INLINE fail #-}
2009 {-# INLINE fail #-}
2559 fail _ = error "Dynamic does not support 'fail'"
2010 fail _ = error "Dynamic does not support 'fail'"
2562−{-# INLINABLE newJoinDyn #-}
2012+instance R.Reflex (SpiderTimeline x) where
2563−newJoinDyn :: HasSpiderTimeline x => DynamicS x (Identity (DynamicS x (Identity a))) -> Reflex.Spider.Internal.Dyn x (Identity a)
2013+ newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
2564−newJoinDyn d =
2014+ newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2565− let readV0 = readBehaviorTracked . dynamicCurrent =<< readBehaviorTracked (dynamicCurrent d)
2015+ newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: Dynamic x (Identity a) } -- deriving (Functor, Applicative, Monad)
2566− eOuter = Reflex.Spider.Internal.push (fmap (Just . Identity) . readBehaviorUntracked . dynamicCurrent . runIdentity) $ dynamicUpdated d
2016+ newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: Dynamic x p }
2567− eInner = Reflex.Spider.Internal.switch $ dynamicUpdated <$> dynamicCurrent d
2017+ type PullM (SpiderTimeline x) = SpiderPullM x
2568− eBoth = Reflex.Spider.Internal.coincidence $ dynamicUpdated . runIdentity <$> dynamicUpdated d
2018+ type PushM (SpiderTimeline x) = SpiderPushM x
2569− v' = unSpiderEvent $ Reflex.Class.leftmost $ map SpiderEvent [eBoth, eOuter, eInner]
2019+ {-# INLINABLE never #-}
2570− in Reflex.Spider.Internal.unsafeBuildDynamic readV0 v'
2020+ never = SpiderEvent eventNever
2571−
2021+ {-# INLINABLE constant #-}
2572−instance HasSpiderTimeline x => Functor (Reflex.Class.Dynamic (SpiderTimeline x)) where
2022+ constant = SpiderBehavior . behaviorConst
2573− fmap = mapDynamicSpider
2023+ {-# INLINABLE push #-}
2024+ push f = SpiderEvent . push (coerce f) . unSpiderEvent
2025+ {-# INLINABLE pull #-}
2026+ pull = SpiderBehavior . pull . coerce
2027+ {-# INLINABLE merge #-}
2028+ merge = SpiderEvent . merge . dynamicConst . (coerce :: DMap k (R.Event (SpiderTimeline x)) -> DMap k (Event x))
2029+ {-# INLINABLE fan #-}
2030+ fan e = R.EventSelector $ SpiderEvent . select (fan (unSpiderEvent e))
2031+ {-# INLINABLE switch #-}
2032+ switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
2033+ {-# INLINABLE coincidence #-}
2034+ coincidence = SpiderEvent . coincidence . (coerce :: Event x (R.Event (SpiderTimeline x) a) -> Event x (Event x a)) . unSpiderEvent
2035+ {-# INLINABLE current #-}
2036+ current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
2037+ {-# INLINABLE updated #-}
2038+ updated = SpiderEvent . fmap runIdentity . dynamicUpdated . unSpiderDynamic
2574− x <$ d = R.unsafeBuildDynamic (return x) $ x <$ R.updated d
2039+ {-# INLINABLE unsafeBuildDynamic #-}
2575−
2040+ unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeDyn (coerce readV0) $ coerce $ unSpiderEvent v'
2576−mapDynamicSpider :: HasSpiderTimeline x => (a -> b) -> Reflex.Class.Dynamic (SpiderTimeline x) a -> Reflex.Class.Dynamic (SpiderTimeline x) b
2041+ {-# INLINABLE unsafeBuildIncremental #-}
2577−mapDynamicSpider f = SpiderDynamic . newMapDyn f . unSpiderDynamic
2042+ unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeDyn (coerce readV0) $ unSpiderEvent dv
2578−{-# INLINE [1] mapDynamicSpider #-}
2043+ {-# INLINABLE mergeIncremental #-}
2044+ mergeIncremental = SpiderEvent . merge . (unsafeCoerce :: Dynamic x (R.PatchDMap k (R.Event (SpiderTimeline x))) -> Dynamic x (R.PatchDMap k (Event x))) . unSpiderIncremental
2045+ {-# INLINABLE currentIncremental #-}
2046+ currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
2047+ {-# INLINABLE updatedIncremental #-}
2048+ updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
2049+ {-# INLINABLE incrementalToDynamic #-}
2050+ incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ dynamicDynIdentity $ unsafeDyn (readBehaviorUntracked $ dynamicCurrent i) $ flip push (dynamicUpdated i) $ \p -> do
2051+ c <- readBehaviorUntracked $ dynamicCurrent i
2052+ return $ Identity <$> R.apply p c --TODO: Avoid the redundant 'apply'
2053+ eventCoercion Coercion = Coercion
2054+ behaviorCoercion Coercion = Coercion
2055+ dynamicCoercion = unsafeCoerce --TODO: How can we avoid this unsafeCoerce? This is safe only because we know how Identity works as a Patch instance
2580−instance HasSpiderTimeline x => Applicative (Reflex.Class.Dynamic (SpiderTimeline x)) where
2057+instance R.MonadSample (SpiderTimeline x) (EventM x) where
2581− pure = SpiderDynamic . dynamicConst
2058+ {-# INLINABLE sample #-}
2582−#if MIN_VERSION_base(4,10,0)
2059+ sample (SpiderBehavior b) = readBehaviorUntracked b
2583− liftA2 f a b = SpiderDynamic $ Reflex.Spider.Internal.zipDynWith f (unSpiderDynamic a) (unSpiderDynamic b)
2585− SpiderDynamic a <*> SpiderDynamic b = SpiderDynamic $ Reflex.Spider.Internal.zipDynWith ($) a b
2586− a *> b = R.unsafeBuildDynamic (R.sample $ R.current b) $ R.leftmost [R.updated b, R.tag (R.current b) $ R.updated a]
2587− (<*) = flip (*>) -- There are no effects, so order doesn't matter
2589−holdSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Behavior (SpiderTimeline x) a)
2061+instance R.MonadHold (SpiderTimeline x) (EventM x) where
2590−holdSpiderEventM v0 e = fmap (SpiderBehavior . behaviorHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2062+ {-# INLINABLE hold #-}
2063+ hold = holdSpiderEventM
2064+ {-# INLINABLE holdDyn #-}
2065+ holdDyn = holdDynSpiderEventM
2066+ {-# INLINABLE holdIncremental #-}
2067+ holdIncremental = holdIncrementalSpiderEventM
2592−holdDynSpiderEventM :: HasSpiderTimeline x => a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Dynamic (SpiderTimeline x) a)
2069+holdSpiderEventM :: a -> R.Event (SpiderTimeline x) a -> EventM x (R.Behavior (SpiderTimeline x) a)
2593−holdDynSpiderEventM v0 e = fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2070+holdSpiderEventM v0 e = fmap (SpiderBehavior . behaviorHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2595−holdIncrementalSpiderEventM :: (HasSpiderTimeline x, Patch p) => PatchTarget p -> Reflex.Class.Event (SpiderTimeline x) p -> EventM x (Reflex.Class.Incremental (SpiderTimeline x) p)
2072+holdDynSpiderEventM :: a -> R.Event (SpiderTimeline x) a -> EventM x (R.Dynamic (SpiderTimeline x) a)
2596−holdIncrementalSpiderEventM v0 e = fmap (SpiderIncremental . dynamicHold) $ Reflex.Spider.Internal.hold v0 $ unSpiderEvent e
2073+holdDynSpiderEventM v0 e = fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2598−buildDynamicSpiderEventM :: HasSpiderTimeline x => SpiderPushM x a -> Reflex.Class.Event (SpiderTimeline x) a -> EventM x (Reflex.Class.Dynamic (SpiderTimeline x) a)
2075+holdIncrementalSpiderEventM :: R.Patch p => R.PatchTarget p -> R.Event (SpiderTimeline x) p -> EventM x (R.Incremental (SpiderTimeline x) p)
2599−buildDynamicSpiderEventM getV0 e = fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce $ unSpiderEvent e
2076+holdIncrementalSpiderEventM v0 e = fmap (SpiderIncremental . dynamicHold) $ hold v0 $ unSpiderEvent e
2601−instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderHost x) where
2078+instance R.MonadHold (SpiderTimeline x) (SpiderHost x) where
2602 {-# INLINABLE hold #-}
2079 {-# INLINABLE hold #-}
2603− hold v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.hold v0 e
2080+ hold v0 e = R.runHostFrame $ R.hold v0 e
2604 {-# INLINABLE holdDyn #-}
2081 {-# INLINABLE holdDyn #-}
2605− holdDyn v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.holdDyn v0 e
2082+ holdDyn v0 e = R.runHostFrame $ R.holdDyn v0 e
2606 {-# INLINABLE holdIncremental #-}
2083 {-# INLINABLE holdIncremental #-}
2607− holdIncremental v0 e = runFrame . runSpiderHostFrame $ Reflex.Class.holdIncremental v0 e
2084+ holdIncremental v0 e = R.runHostFrame $ R.holdIncremental v0 e
2608− {-# INLINABLE buildDynamic #-}
2609− buildDynamic getV0 e = runFrame . runSpiderHostFrame $ Reflex.Class.buildDynamic getV0 e
2610− {-# INLINABLE headE #-}
2611− headE e = runFrame . runSpiderHostFrame $ Reflex.Class.headE e
2612− {-# INLINABLE now #-}
2613− now = runFrame . runSpiderHostFrame $ Reflex.Class.now
2616−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHostFrame x) where
2617− sample = SpiderHostFrame . readBehaviorUntracked . unSpiderBehavior --TODO: This can cause problems with laziness, so we should get rid of it if we can
2619−instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (SpiderHostFrame x) where
2620− {-# INLINABLE hold #-}
2621− hold v0 e = SpiderHostFrame $ fmap (SpiderBehavior . behaviorHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2622− {-# INLINABLE holdDyn #-}
2623− holdDyn v0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicHoldIdentity) $ Reflex.Spider.Internal.hold v0 $ coerce $ unSpiderEvent e
2624− {-# INLINABLE holdIncremental #-}
2625− holdIncremental v0 e = SpiderHostFrame $ fmap (SpiderIncremental . dynamicHold) $ Reflex.Spider.Internal.hold v0 $ unSpiderEvent e
2626− {-# INLINABLE buildDynamic #-}
2627− buildDynamic getV0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicDynIdentity) $ Reflex.Spider.Internal.buildDynamic (coerce getV0) $ coerce $ unSpiderEvent e
2628− {-# INLINABLE headE #-}
2629− headE = R.slowHeadE
2630−-- headE (SpiderEvent e) = SpiderHostFrame $ SpiderEvent <$> Reflex.Spider.Internal.headE e
2631− {-# INLINABLE now #-}
2632− now = SpiderHostFrame Reflex.Class.now
2634−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (SpiderHost x) where
2086+instance R.MonadSample (SpiderTimeline x) (SpiderHost x) where
2635 {-# INLINABLE sample #-}
2087 {-# INLINABLE sample #-}
2636 sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2088 sample = runFrame . readBehaviorUntracked . unSpiderBehavior
2638−instance HasSpiderTimeline x => Reflex.Class.MonadSample (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2090+instance R.MonadSample (SpiderTimeline x) (SpiderPullM x) where
2639 {-# INLINABLE sample #-}
2091 {-# INLINABLE sample #-}
2640− sample = Reflex.Spider.Internal.ReadPhase . Reflex.Class.sample
2092+ sample = coerce . readBehaviorTracked . unSpiderBehavior
2094+instance R.MonadSample (SpiderTimeline x) (SpiderPushM x) where
2095+ {-# INLINABLE sample #-}
2096+ sample (SpiderBehavior b) = SpiderPushM $ readBehaviorUntracked b
2642−instance HasSpiderTimeline x => Reflex.Class.MonadHold (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2098+instance R.MonadHold (SpiderTimeline x) (SpiderPushM x) where
2643 {-# INLINABLE hold #-}
2099 {-# INLINABLE hold #-}
2644− hold v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.hold v0 e
2100+ hold v0 e = R.current <$> R.holdDyn v0 e
2645 {-# INLINABLE holdDyn #-}
2101 {-# INLINABLE holdDyn #-}
2646− holdDyn v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.holdDyn v0 e
2102+ holdDyn v0 (SpiderEvent e) = SpiderPushM $ fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce e
2647 {-# INLINABLE holdIncremental #-}
2103 {-# INLINABLE holdIncremental #-}
2648− holdIncremental v0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.holdIncremental v0 e
2104+ holdIncremental v0 (SpiderEvent e) = SpiderPushM $ SpiderIncremental . dynamicHold <$> hold v0 e
2649− {-# INLINABLE buildDynamic #-}
2650− buildDynamic getV0 e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.buildDynamic getV0 e
2651− {-# INLINABLE headE #-}
2652− headE e = Reflex.Spider.Internal.ReadPhase $ Reflex.Class.headE e
2653− {-# INLINABLE now #-}
2654− now = Reflex.Spider.Internal.ReadPhase Reflex.Class.now
2656−--------------------------------------------------------------------------------
2106+data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
2658−--------------------------------------------------------------------------------
2660−-- | 'SpiderEnv' is the old name for 'SpiderTimeline'
2108+data SpiderEventHandle x a = SpiderEventHandle
2661−{-# DEPRECATED SpiderEnv "Use 'SpiderTimelineEnv' instead" #-}
2109+ { spiderEventHandleSubscription :: EventSubscription x a
2662−type SpiderEnv = SpiderTimeline
2110+ , spiderEventHandleValue :: IORef (Maybe a)
2663−instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHostFrame x) where
2113+instance R.MonadSubscribeEvent (SpiderTimeline x) (SpiderHostFrame x) where
2664 {-# INLINABLE subscribeEvent #-}
2114 {-# INLINABLE subscribeEvent #-}
2665 subscribeEvent e = SpiderHostFrame $ do
2115 subscribeEvent e = SpiderHostFrame $ do
2666 --TODO: Unsubscribe eventually (manually and/or with weak ref)
2116 --TODO: Unsubscribe eventually (manually and/or with weak ref)
@@ -2677,149 +2127,18 @@ instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTim
2677 , spiderEventHandleValue = val
2127 , spiderEventHandleValue = val
2680−instance HasSpiderTimeline x => Reflex.Host.Class.ReflexHost (SpiderTimeline x) where
2130+instance R.ReflexHost (SpiderTimeline x) where
2681 type EventTrigger (SpiderTimeline x) = RootTrigger x
2131 type EventTrigger (SpiderTimeline x) = RootTrigger x
2682 type EventHandle (SpiderTimeline x) = SpiderEventHandle x
2132 type EventHandle (SpiderTimeline x) = SpiderEventHandle x
2683 type HostFrame (SpiderTimeline x) = SpiderHostFrame x
2133 type HostFrame (SpiderTimeline x) = SpiderHostFrame x
2685−instance HasSpiderTimeline x => Reflex.Host.Class.MonadReadEvent (SpiderTimeline x) (Reflex.Spider.Internal.ReadPhase x) where
2135+instance R.MonadReadEvent (SpiderTimeline x) (ReadPhase x) where
2686 {-# NOINLINE readEvent #-}
2136 {-# NOINLINE readEvent #-}
2687− readEvent h = Reflex.Spider.Internal.ReadPhase $ fmap (fmap return) $ liftIO $ do
2137+ readEvent h = ReadPhase $ fmap (fmap return) $ liftIO $ do
2688 result <- readIORef $ spiderEventHandleValue h
2138 result <- readIORef $ spiderEventHandleValue h
2690 return result
2140 return result
2692−instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHost x) where
2693− newEventWithTrigger = SpiderHost . fmap SpiderEvent . newEventWithTriggerIO
2694− newFanEventWithTrigger f = SpiderHost $ do
2695− es <- newFanEventWithTriggerIO f
2696− return $ Reflex.Class.EventSelector $ SpiderEvent . Reflex.Spider.Internal.select es
2698−instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHostFrame x) where
2699− newEventWithTrigger = SpiderHostFrame . EventM . liftIO . fmap SpiderEvent . newEventWithTriggerIO
2700− newFanEventWithTrigger f = SpiderHostFrame $ EventM $ liftIO $ do
2701− es <- newFanEventWithTriggerIO f
2702− return $ Reflex.Class.EventSelector $ SpiderEvent . Reflex.Spider.Internal.select es
2704−instance HasSpiderTimeline x => Reflex.Host.Class.MonadSubscribeEvent (SpiderTimeline x) (SpiderHost x) where
2705− {-# INLINABLE subscribeEvent #-}
2706− subscribeEvent = runFrame . runSpiderHostFrame . Reflex.Host.Class.subscribeEvent
2708−instance HasSpiderTimeline x => Reflex.Host.Class.MonadReflexHost (SpiderTimeline x) (SpiderHost x) where
2709− type ReadPhase (SpiderHost x) = Reflex.Spider.Internal.ReadPhase x
2710− fireEventsAndRead es (Reflex.Spider.Internal.ReadPhase a) = run es a
2711− runHostFrame = runFrame . runSpiderHostFrame
2713−unsafeNewSpiderTimelineEnv :: forall x. IO (SpiderTimelineEnv x)
2714−unsafeNewSpiderTimelineEnv = do
2718− depthRef <- newIORef 0
2720− return $ STE $ SpiderTimelineEnv
2721− { _spiderTimeline_lock = lock
2722− , _spiderTimeline_eventEnv = env
2724− , _spiderTimeline_depth = depthRef
2728−-- | Create a new SpiderTimelineEnv
2729−newSpiderTimeline :: IO (Some SpiderTimelineEnv)
2730−newSpiderTimeline = withSpiderTimeline (pure . Some)
2732−data LocalSpiderTimeline (x :: Type) s
2734−instance Reifies s (SpiderTimelineEnv x) =>
2735− HasSpiderTimeline (LocalSpiderTimeline x s) where
2736− spiderTimeline = localSpiderTimeline Proxy $ reflect (Proxy :: Proxy s)
2740− -> SpiderTimelineEnv x
2741− -> SpiderTimelineEnv (LocalSpiderTimeline x s)
2742−localSpiderTimeline _ = coerce
2744−-- | Pass a new timeline to the given function.
2745−withSpiderTimeline :: (forall x. HasSpiderTimeline x => SpiderTimelineEnv x -> IO r) -> IO r
2746−withSpiderTimeline k = do
2747− env <- unsafeNewSpiderTimelineEnv
2748− reify env $ \s -> k $ localSpiderTimeline s env
2750−newtype SpiderPullM (x :: Type) a = SpiderPullM (BehaviorM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2752−type ComputeM = EventM
2754−newtype SpiderPushM (x :: Type) a = SpiderPushM (ComputeM x a) deriving (Functor, Applicative, Monad, MonadIO, MonadFix)
2756−instance HasSpiderTimeline x => R.Reflex (SpiderTimeline x) where
2757− {-# SPECIALIZE instance R.Reflex (SpiderTimeline Global) #-}
2758− newtype Behavior (SpiderTimeline x) a = SpiderBehavior { unSpiderBehavior :: Behavior x a }
2759− newtype Event (SpiderTimeline x) a = SpiderEvent { unSpiderEvent :: Event x a }
2760− newtype Dynamic (SpiderTimeline x) a = SpiderDynamic { unSpiderDynamic :: DynamicS x (Identity a) } -- deriving (Functor, Applicative, Monad)
2761− newtype Incremental (SpiderTimeline x) p = SpiderIncremental { unSpiderIncremental :: DynamicS x p }
2762− type PullM (SpiderTimeline x) = SpiderPullM x
2763− type PushM (SpiderTimeline x) = SpiderPushM x
2764− {-# INLINABLE never #-}
2765− never = SpiderEvent eventNever
2766− {-# INLINABLE constant #-}
2767− constant = SpiderBehavior . behaviorConst
2768− {-# INLINE push #-}
2769− push f = SpiderEvent . push (coerce f) . unSpiderEvent
2770− {-# INLINE pushCheap #-}
2771− pushCheap f = SpiderEvent . pushCheap (coerce f) . unSpiderEvent
2772− {-# INLINABLE pull #-}
2773− pull = SpiderBehavior . pull . coerce
2774− {-# INLINABLE fanG #-}
2775− fanG e = R.EventSelectorG $ SpiderEvent . selectG (fanG (unSpiderEvent e))
2776− {-# INLINABLE mergeG #-}
2778− :: forall k2 (k :: k2 -> *) q (v :: k2 -> *). GCompare k
2779− => (forall a. q a -> R.Event (SpiderTimeline x) (v a))
2781− -> R.Event (SpiderTimeline x) (DMap k v)
2782− mergeG nt = SpiderEvent . mergeG (unSpiderEvent #. nt) . dynamicConst
2783− {-# INLINABLE switch #-}
2784− switch = SpiderEvent . switch . (coerce :: Behavior x (R.Event (SpiderTimeline x) a) -> Behavior x (Event x a)) . unSpiderBehavior
2785− {-# INLINABLE coincidence #-}
2786− coincidence = SpiderEvent . coincidence . (coerce :: Event x (R.Event (SpiderTimeline x) a) -> Event x (Event x a)) . unSpiderEvent
2787− {-# INLINABLE current #-}
2788− current = SpiderBehavior . dynamicCurrent . unSpiderDynamic
2789− {-# INLINABLE updated #-}
2790− updated = SpiderEvent #. dynamicUpdated .# fmap coerce . unSpiderDynamic
2791− {-# INLINABLE unsafeBuildDynamic #-}
2792− unsafeBuildDynamic readV0 v' = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (coerce readV0) $ coerce $ unSpiderEvent v'
2793− {-# INLINABLE unsafeBuildIncremental #-}
2794− unsafeBuildIncremental readV0 dv = SpiderIncremental $ dynamicDyn $ unsafeBuildDynamic (coerce readV0) $ unSpiderEvent dv
2795− {-# INLINABLE mergeIncrementalG #-}
2796− mergeIncrementalG nt = SpiderEvent #. mergeG (coerce #. nt) .# unSpiderIncremental
2797− {-# INLINABLE mergeIncrementalWithMoveG #-}
2798− mergeIncrementalWithMoveG nt = SpiderEvent #. mergeWithMove (coerce #. nt) .# unSpiderIncremental
2799− {-# INLINABLE currentIncremental #-}
2800− currentIncremental = SpiderBehavior . dynamicCurrent . unSpiderIncremental
2801− {-# INLINABLE updatedIncremental #-}
2802− updatedIncremental = SpiderEvent . dynamicUpdated . unSpiderIncremental
2803− {-# INLINABLE incrementalToDynamic #-}
2804− incrementalToDynamic (SpiderIncremental i) = SpiderDynamic $ dynamicDynIdentity $ unsafeBuildDynamic (readBehaviorUntracked $ dynamicCurrent i) $ flip push (dynamicUpdated i) $ \p -> do
2805− c <- readBehaviorUntracked $ dynamicCurrent i
2806− return $ Identity <$> apply p c --TODO: Avoid the redundant 'apply'
2807− eventCoercion Coercion = Coercion
2808− behaviorCoercion Coercion = Coercion
2809− dynamicCoercion Coercion = Coercion
2810− incrementalCoercion Coercion Coercion = Coercion
2811− {-# INLINABLE mergeIntIncremental #-}
2812− mergeIntIncremental = SpiderEvent . mergeInt . coerce
2813− {-# INLINABLE fanInt #-}
2814− fanInt e = R.EventSelectorInt $ SpiderEvent . selectInt (fanInt (unSpiderEvent e))
2816−data RootTrigger x a = forall k. GCompare k => RootTrigger (WeakBag (Subscriber x a), IORef (DMap k Identity), k a)
2818−data SpiderEventHandle x a = SpiderEventHandle
2819− { spiderEventHandleSubscription :: EventSubscription x
2820− , spiderEventHandleValue :: IORef (Maybe a)
2823instance MonadRef (EventM x) where
2142instance MonadRef (EventM x) where
2824 type Ref (EventM x) = Ref IO
2143 type Ref (EventM x) = Ref IO
2825 {-# INLINABLE newRef #-}
2144 {-# INLINABLE newRef #-}
@@ -2834,7 +2153,7 @@ instance MonadAtomicRef (EventM x) where
2834 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2153 atomicModifyRef r f = liftIO $ atomicModifyRef r f
2836-- | The monad for actions that manipulate a Spider timeline identified by @x@
2155-- | The monad for actions that manipulate a Spider timeline identified by @x@
2837−newtype SpiderHost (x :: Type) a = SpiderHost { unSpiderHost :: IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2156+newtype SpiderHost x a = SpiderHost { unSpiderHost :: ReaderT (SpiderTimeline x) IO a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2839instance Monad (SpiderHost x) where
2158instance Monad (SpiderHost x) where
2840 {-# INLINABLE (>>=) #-}
2159 {-# INLINABLE (>>=) #-}
@@ -2843,27 +2162,20 @@ instance Monad (SpiderHost x) where
2843 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2162 SpiderHost x >> SpiderHost y = SpiderHost $ x >> y
2844 {-# INLINABLE return #-}
2163 {-# INLINABLE return #-}
2845 return x = SpiderHost $ return x
2164 return x = SpiderHost $ return x
2846−#if !MIN_VERSION_base(4,13,0)
2847 {-# INLINABLE fail #-}
2165 {-# INLINABLE fail #-}
2848− fail = MonadFail.fail
2851−instance MonadFail (SpiderHost x) where
2852− {-# INLINABLE fail #-}
2853− fail s = SpiderHost $ MonadFail.fail s
2166+ fail s = SpiderHost $ fail s
2855-- | Run an action affecting the global Spider timeline; this will be guarded by
2168-- | Run an action affecting the global Spider timeline; this will be guarded by
2856-- a mutex for that timeline
2169-- a mutex for that timeline
2857runSpiderHost :: SpiderHost Global a -> IO a
2170runSpiderHost :: SpiderHost Global a -> IO a
2858−runSpiderHost (SpiderHost a) = a
2171+runSpiderHost (SpiderHost a) = runReaderT a globalSpiderTimeline
2860-- | Run an action affecting a given Spider timeline; this will be guarded by a
2173-- | Run an action affecting a given Spider timeline; this will be guarded by a
2861-- mutex for that timeline
2174-- mutex for that timeline
2862−runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimelineEnv x -> IO a
2175+runSpiderHostForTimeline :: SpiderHost x a -> SpiderTimeline x -> IO a
2863−runSpiderHostForTimeline (SpiderHost a) _ = a
2176+runSpiderHostForTimeline (SpiderHost a) = runReaderT a
2865−newtype SpiderHostFrame (x :: Type) a = SpiderHostFrame { runSpiderHostFrame :: EventM x a }
2866− deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2178+newtype SpiderHostFrame x a = SpiderHostFrame { runSpiderHostFrame :: EventM x a } deriving (Functor, Applicative, MonadFix, MonadIO, MonadException, MonadAsyncException)
2868instance Monad (SpiderHostFrame x) where
2180instance Monad (SpiderHostFrame x) where
2869 {-# INLINABLE (>>=) #-}
2181 {-# INLINABLE (>>=) #-}
@@ -2872,21 +2184,26 @@ instance Monad (SpiderHostFrame x) where
2872 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2184 SpiderHostFrame x >> SpiderHostFrame y = SpiderHostFrame $ x >> y
2873 {-# INLINABLE return #-}
2185 {-# INLINABLE return #-}
2874 return x = SpiderHostFrame $ return x
2186 return x = SpiderHostFrame $ return x
2875−#if !MIN_VERSION_base(4,13,0)
2876 {-# INLINABLE fail #-}
2187 {-# INLINABLE fail #-}
2877 fail s = SpiderHostFrame $ fail s
2188 fail s = SpiderHostFrame $ fail s
2880−instance NotReady (SpiderTimeline x) (SpiderHostFrame x) where
2190+instance R.MonadSample (SpiderTimeline x) (SpiderHostFrame x) where
2881− notReadyUntil _ = pure ()
2191+ sample = SpiderHostFrame . readBehaviorUntracked . unSpiderBehavior --TODO: This can cause problems with laziness, so we should get rid of it if we can
2882− notReady = pure ()
2192+
2193+instance R.MonadHold (SpiderTimeline x) (SpiderHostFrame x) where
2194+ {-# INLINABLE hold #-}
2195+ hold v0 e = SpiderHostFrame $ fmap (SpiderBehavior . behaviorHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2196+ {-# INLINABLE holdDyn #-}
2197+ holdDyn v0 e = SpiderHostFrame $ fmap (SpiderDynamic . dynamicHoldIdentity) $ hold v0 $ coerce $ unSpiderEvent e
2198+ {-# INLINABLE holdIncremental #-}
2199+ holdIncremental v0 e = SpiderHostFrame $ fmap (SpiderIncremental . dynamicHold) $ hold v0 $ unSpiderEvent e
2884−newEventWithTriggerIO :: forall x a. HasSpiderTimeline x => (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2201+newEventWithTriggerIO :: (RootTrigger x a -> IO (IO ())) -> IO (Event x a)
2885newEventWithTriggerIO f = do
2202newEventWithTriggerIO f = do
2886 es <- newFanEventWithTriggerIO $ \Refl -> f
2203 es <- newFanEventWithTriggerIO $ \Refl -> f
2887 return $ select es Refl
2204 return $ select es Refl
2889−newFanEventWithTriggerIO :: (HasSpiderTimeline x, GCompare k) => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2206+newFanEventWithTriggerIO :: GCompare k => (forall a. k a -> RootTrigger x a -> IO (IO ())) -> IO (EventSelector x k)
2890newFanEventWithTriggerIO f = do
2207newFanEventWithTriggerIO f = do
2891 occRef <- newIORef DMap.empty
2208 occRef <- newIORef DMap.empty
2892 subscribedRef <- newIORef DMap.empty
2209 subscribedRef <- newIORef DMap.empty
@@ -2897,8 +2214,41 @@ newFanEventWithTriggerIO f = do
2898 return $ EventSelector $ \k -> eventRoot k r
2215 return $ EventSelector $ \k -> eventRoot k r
2217+instance R.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHost x) where
2218+ newEventWithTrigger = SpiderHost . lift . fmap SpiderEvent . newEventWithTriggerIO
2219+ newFanEventWithTrigger f = SpiderHost $ lift $ do
2220+ es <- newFanEventWithTriggerIO f
2221+ return $ R.EventSelector $ SpiderEvent . select es
2223+instance R.MonadReflexCreateTrigger (SpiderTimeline x) (SpiderHostFrame x) where
2224+ newEventWithTrigger = SpiderHostFrame . EventM . liftIO . fmap SpiderEvent . newEventWithTriggerIO
2225+ newFanEventWithTrigger f = SpiderHostFrame $ EventM $ liftIO $ do
2226+ es <- newFanEventWithTriggerIO f
2227+ return $ R.EventSelector $ SpiderEvent . select es
2229+instance R.MonadSubscribeEvent (SpiderTimeline x) (SpiderHost x) where
2230+ {-# INLINABLE subscribeEvent #-}
2231+ subscribeEvent = runFrame . runSpiderHostFrame . R.subscribeEvent
2900newtype ReadPhase x a = ReadPhase (ResultM x a) deriving (Functor, Applicative, Monad, MonadFix)
2233newtype ReadPhase x a = ReadPhase (ResultM x a) deriving (Functor, Applicative, Monad, MonadFix)
2235+instance R.MonadSample (SpiderTimeline x) (ReadPhase x) where
2236+ {-# INLINABLE sample #-}
2237+ sample = ReadPhase . R.sample
2239+instance R.MonadHold (SpiderTimeline x) (ReadPhase x) where
2240+ {-# INLINABLE hold #-}
2241+ hold v0 e = ReadPhase $ R.hold v0 e
2242+ {-# INLINABLE holdDyn #-}
2243+ holdDyn v0 e = ReadPhase $ R.holdDyn v0 e
2244+ {-# INLINABLE holdIncremental #-}
2245+ holdIncremental v0 e = ReadPhase $ R.holdIncremental v0 e
2247+instance R.MonadReflexHost (SpiderTimeline x) (SpiderHost x) where
2248+ type ReadPhase (SpiderHost x) = ReadPhase x
2249+ fireEventsAndRead es (ReadPhase a) = run es a
2250+ runHostFrame = runFrame . runSpiderHostFrame
2902instance MonadRef (SpiderHost x) where
2252instance MonadRef (SpiderHost x) where
2903 type Ref (SpiderHost x) = Ref IO
2253 type Ref (SpiderHost x) = Ref IO
2904 newRef = SpiderHost . newRef
2254 newRef = SpiderHost . newRef
@@ -2921,10 +2271,9 @@ instance PrimMonad (SpiderHostFrame x) where
2921 type PrimState (SpiderHostFrame x) = PrimState IO
2271 type PrimState (SpiderHostFrame x) = PrimState IO
2922 primitive = SpiderHostFrame . EventM . primitive
2272 primitive = SpiderHostFrame . EventM . primitive
2924−instance NotReady (SpiderTimeline x) (SpiderHost x) where
2274+--------------------------------------------------------------------------------
2925− notReadyUntil _ = return ()
2275+-- Deprecated items
2926− notReady = return ()
2276+--------------------------------------------------------------------------------
2928−instance HasSpiderTimeline x => NotReady (SpiderTimeline x) (PerformEventT (SpiderTimeline x) (SpiderHost x)) where
2278+{-# DEPRECATED SpiderEnv "Use 'SpiderTimeline' instead" #-}
2929− notReadyUntil _ = return ()
2279+type SpiderEnv = SpiderTimeline
2930− notReady = return ()