{-# LANGUAGE OverloadedStrings #-}
+{-# LANGUAGE FlexibleInstances #-}
module Language.Haskell.LSP.Test.Session
( Session
- , SessionState(..)
+ , SessionConfig(..)
, SessionContext(..)
+ , SessionState(..)
+ , MonadSessionConfig(..)
, runSessionWithHandles
, get
, put
where
import Control.Concurrent hiding (yield)
+import Control.Exception
import Control.Lens hiding (List)
import Control.Monad
import Control.Monad.IO.Class
-import Control.Monad.Trans.Class
+import Control.Monad.Except
import Control.Monad.Trans.Reader (ReaderT, runReaderT)
import qualified Control.Monad.Trans.Reader as Reader (ask)
import Control.Monad.Trans.State (StateT, runStateT)
import qualified Control.Monad.Trans.State as State (get, put, modify)
import qualified Data.ByteString.Lazy.Char8 as B
import Data.Aeson
-import Data.Conduit
+import Data.Conduit hiding (await)
import Data.Conduit.Parser
+import Data.Default
import Data.Foldable
import Data.List
+import qualified Data.Text as T
import qualified Data.HashMap.Strict as HashMap
import Language.Haskell.LSP.Messages
+import Language.Haskell.LSP.TH.ClientCapabilities
import Language.Haskell.LSP.Types
import Language.Haskell.LSP.VFS
import Language.Haskell.LSP.Test.Compat
import Language.Haskell.LSP.Test.Decoding
+import Language.Haskell.LSP.Test.Exceptions
import System.Directory
import System.IO
+-- | A session representing one instance of launching and connecting to a server.
+--
+-- You can send and receive messages to the server within 'Session' via 'getMessage',
+-- 'sendRequest' and 'sendNotification'.
+--
+-- @
+-- runSession \"path\/to\/root\/dir\" $ do
+-- docItem <- getDocItem "Desktop/simple.hs" "haskell"
+-- sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams docItem)
+-- diagnostics <- getMessage :: Session PublishDiagnosticsNotification
+-- @
+type Session = ParserStateReader FromServerMessage SessionState SessionContext IO
+
+-- | Stuff you can configure for a 'Session'.
+data SessionConfig = SessionConfig
+ {
+ capabilities :: ClientCapabilities, -- ^ Specific capabilities the client should advertise.
+ timeout :: Int -- ^ Maximum time to wait for a request in seconds.
+ }
+
+instance Default SessionConfig where
+ def = SessionConfig def 60
+
+class Monad m => MonadSessionConfig m where
+ sessionConfig :: m SessionConfig
+
+instance Monad m => MonadSessionConfig (StateT SessionState (ReaderT SessionContext m)) where
+ sessionConfig = config <$> lift Reader.ask
+
data SessionContext = SessionContext
{
serverIn :: Handle
, messageChan :: Chan FromServerMessage
, requestMap :: MVar RequestMap
, initRsp :: MVar InitializeResponse
+ , config :: SessionConfig
}
data SessionState = SessionState
type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m))
--- | A session representing one instance of launching and connecting to a server.
---
--- You can send and receive messages to the server within 'Session' via 'getMessage',
--- 'sendRequest' and 'sendNotification'.
---
--- @
--- runSession \"path\/to\/root\/dir\" $ do
--- docItem <- getDocItem "Desktop/simple.hs" "haskell"
--- sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams docItem)
--- diagnostics <- getMessage :: Session PublishDiagnosticsNotification
--- @
-type Session = ParserStateReader FromServerMessage SessionState SessionContext IO
-
type SessionProcessor = ConduitT FromServerMessage FromServerMessage (StateT SessionState (ReaderT SessionContext IO))
-runSession' :: Chan FromServerMessage -> SessionProcessor () -> SessionContext -> SessionState -> Session a -> IO (a, SessionState)
-runSession' chan preprocessor context state session = runReaderT (runStateT conduit state) context
- where conduit = runConduit $ chanSource chan .| preprocessor .| runConduitParser session
+runSession :: Chan FromServerMessage -> SessionProcessor () -> SessionContext -> SessionState -> Session a -> IO (a, SessionState)
+runSession chan preprocessor context state session = runReaderT (runStateT conduit state) context
+ where conduit = runConduit $ chanSource chan .| preprocessor .| runConduitParser (catchError session handler)
+ handler e@(Unexpected "ConduitParser.empty") = do
+
+ -- Horrible way to get last item in conduit:
+ -- Add a fake message so we can tell when to stop
+ liftIO $ writeChan chan (RspShutdown (ResponseMessage "EMPTY" IdRspNull Nothing Nothing))
+ x <- peek
+ case x of
+ Just x -> do
+ lastMsg <- skipToEnd x
+ name <- getParserName
+ liftIO $ throw (UnexpectedMessageException (T.unpack name) lastMsg)
+ Nothing -> throw e
+
+ handler e = throw e
+
+ skipToEnd x = do
+ y <- peek
+ case y of
+ Just (RspShutdown (ResponseMessage "EMPTY" IdRspNull Nothing Nothing)) -> return x
+ Just _ -> await >>= skipToEnd
+ Nothing -> return x
get :: Monad m => ParserStateReader a s r m s
get = lift State.get
runSessionWithHandles :: Handle -- ^ Server in
-> Handle -- ^ Server out
-> (Handle -> Session ()) -- ^ Server listener
+ -> SessionConfig
-> FilePath
-> Session a
-> IO a
-runSessionWithHandles serverIn serverOut serverHandler rootDir session = do
+runSessionWithHandles serverIn serverOut serverHandler config rootDir session = do
absRootDir <- canonicalizePath rootDir
hSetBuffering serverIn NoBuffering
meaninglessChan <- newChan
initRsp <- newEmptyMVar
- let context = SessionContext serverIn absRootDir messageChan reqMap initRsp
+ let context = SessionContext serverIn absRootDir messageChan reqMap initRsp config
initState = SessionState (IdInt 0) mempty
- threadId <- forkIO $ void $ runSession' meaninglessChan processor context initState (serverHandler serverOut)
- (result, _) <- runSession' messageChan processor context initState session
+ threadId <- forkIO $ void $ runSession meaninglessChan processor context initState (serverHandler serverOut)
+ (result, _) <- runSession messageChan processor context initState session
killThread threadId
let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) changeParams
mergedParams = map mergeParams groupedParams
+ -- TODO: Don't do this when replaying a session
forM_ mergedParams $ \p -> do
h <- serverIn <$> lift (lift Reader.ask)
let msg = NotificationMessage "2.0" TextDocumentDidChange p
projects / opengl.git / blobdiff