, get
, put
, modify
+ , modifyM
, ask)
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.Map as Map
+import qualified Data.Text as T
+import qualified Data.Text.IO as T
import qualified Data.HashMap.Strict as HashMap
+import Data.Maybe
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
-- | 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.
+ capabilities :: ClientCapabilities -- ^ Specific capabilities the client should advertise. Default is yes to everything.
+ , timeout :: Int -- ^ Maximum time to wait for a request in seconds. Defaults to 60.
}
instance Default SessionConfig where
type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m))
-type SessionProcessor = ConduitT FromServerMessage FromServerMessage (StateT SessionState (ReaderT SessionContext IO))
+type SessionProcessor = ConduitM 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
+ 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
modify :: Monad m => (s -> s) -> ParserStateReader a s r m ()
modify = lift . State.modify
+modifyM :: Monad m => (s -> m s) -> ParserStateReader a s r m ()
+modifyM f = do
+ old <- lift State.get
+ new <- lift $ lift $ lift $ f old
+ lift $ State.put new
+
ask :: Monad m => ParserStateReader a s r m r
ask = lift $ lift Reader.ask
processTextChanges :: FromServerMessage -> SessionProcessor ()
processTextChanges (ReqApplyWorkspaceEdit r) = do
- List changeParams <- case r ^. params . edit . documentChanges of
- Just cs -> mapM applyTextDocumentEdit cs
+ changeParams <- case r ^. params . edit . documentChanges of
+ Just (List cs) -> mapM applyTextDocumentEdit cs
Nothing -> case r ^. params . edit . changes of
- Just cs -> mapM (uncurry applyTextEdit) (List (HashMap.toList cs))
- Nothing -> return (List [])
+ Just cs -> concat <$> mapM (uncurry applyChange) (HashMap.toList cs)
+ Nothing -> return []
let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) changeParams
mergedParams = map mergeParams groupedParams
+ ctx <- lift $ lift Reader.ask
+
-- 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
+ let h = serverIn ctx
+ msg = NotificationMessage "2.0" TextDocumentDidChange p
liftIO $ B.hPut h $ addHeader (encode msg)
where applyTextDocumentEdit (TextDocumentEdit docId (List edits)) = do
oldVFS <- vfs <$> lift State.get
+ ctx <- lift $ lift Reader.ask
+
+
+ -- if its not open, open it
+ unless ((docId ^. uri) `Map.member` oldVFS) $ do
+ let fp = fromJust $ uriToFilePath (docId ^. uri)
+ contents <- liftIO $ T.readFile fp
+ let item = TextDocumentItem (filePathToUri fp) "" 0 contents
+ msg = NotificationMessage "2.0" TextDocumentDidOpen (DidOpenTextDocumentParams item)
+ liftIO $ B.hPut (serverIn ctx) $ addHeader (encode msg)
+
+ oldVFS <- vfs <$> lift State.get
+ newVFS <- liftIO $ openVFS oldVFS msg
+ lift $ State.modify (\s -> s { vfs = newVFS })
+
+ -- we might have updated it above
+ oldVFS <- vfs <$> lift State.get
+
let changeEvents = map (\e -> TextDocumentContentChangeEvent (Just (e ^. range)) Nothing (e ^. newText)) edits
params = DidChangeTextDocumentParams docId (List changeEvents)
newVFS <- liftIO $ changeVFS oldVFS (fmClientDidChangeTextDocumentNotification params)
lift $ State.modify (\s -> s { vfs = newVFS })
+
return params
- applyTextEdit uri edits = applyTextDocumentEdit (TextDocumentEdit (VersionedTextDocumentIdentifier uri 0) edits)
+ textDocumentVersions uri = map (VersionedTextDocumentIdentifier uri) [0..]
+
+ textDocumentEdits uri edits = map (\(v, e) -> TextDocumentEdit v (List [e])) $ zip (textDocumentVersions uri) edits
+
+ applyChange uri (List edits) = mapM applyTextDocumentEdit (textDocumentEdits uri (reverse edits))
mergeParams :: [DidChangeTextDocumentParams] -> DidChangeTextDocumentParams
mergeParams params = let events = concat (toList (map (toList . (^. contentChanges)) params))
projects / lsp-test.git / blobdiff