X-Git-Url: http://git.lukelau.me/?a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest%2FSession.hs;h=ec6d45dc1ed3fbb18ebb8e239cf2d08287762ed6;hb=3b8d5fe55d1e542587817341a797345270ca7a96;hp=3707dfd90f4caeb10e571f27dcca4abec649697e;hpb=5170a20560a68b8fcaed83ecaf6146d84a147992;p=opengl.git diff --git a/src/Language/Haskell/LSP/Test/Session.hs b/src/Language/Haskell/LSP/Test/Session.hs index 3707dfd..ec6d45d 100644 --- a/src/Language/Haskell/LSP/Test/Session.hs +++ b/src/Language/Haskell/LSP/Test/Session.hs @@ -1,20 +1,88 @@ -module Language.Haskell.LSP.Test.Session where +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE FlexibleInstances #-} +{-# LANGUAGE MultiParamTypeClasses #-} +{-# LANGUAGE FlexibleContexts #-} -import Control.Concurrent +module Language.Haskell.LSP.Test.Session + ( Session + , SessionConfig(..) + , SessionContext(..) + , SessionState(..) + , MonadSessionConfig(..) + , runSessionWithHandles + , get + , put + , modify + , ask + , asks + , sendMessage + , processMessage) + +where + +import Control.Concurrent hiding (yield) +import Control.Exception +import Control.Lens hiding (List) import Control.Monad -import Control.Monad.Trans.Class -import Control.Monad.Trans.Reader -import Control.Monad.Trans.State -import Data.Conduit +import Control.Monad.IO.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) +import qualified Data.ByteString.Lazy.Char8 as B +import Data.Aeson +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.Types +import Language.Haskell.LSP.TH.ClientCapabilities +import Language.Haskell.LSP.Types hiding (error) 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.Console.ANSI 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. Default is yes to everything. + , timeout :: Int -- ^ Maximum time to wait for a request in seconds. Defaults to 60. + , logStdErr :: Bool -- ^ When True redirects the servers stderr output to haskell-lsp-test's stdout. Defaults to False + } + +instance Default SessionConfig where + def = SessionConfig def 60 False + +class Monad m => MonadSessionConfig m where + sessionConfig :: m SessionConfig + +instance Monad m => MonadSessionConfig (StateT SessionState (ReaderT SessionContext m)) where + sessionConfig = config <$> lift Reader.ask + data SessionContext = SessionContext { serverIn :: Handle @@ -22,57 +90,83 @@ data SessionContext = SessionContext , messageChan :: Chan FromServerMessage , requestMap :: MVar RequestMap , initRsp :: MVar InitializeResponse + , config :: SessionConfig } +class Monad m => HasReader r m where + ask :: m r + asks :: (r -> b) -> m b + asks f = f <$> ask + +instance Monad m => HasReader r (ParserStateReader a s r m) where + ask = lift $ lift Reader.ask + +instance HasReader SessionContext SessionProcessor where + ask = lift $ lift Reader.ask + data SessionState = SessionState { curReqId :: LspId , vfs :: VFS + , curDiagnostics :: Map.Map Uri [Diagnostic] } -type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m)) +class Monad m => HasState s m where + get :: m s --- | 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 + put :: s -> m () + modify :: (s -> s) -> m () + modify f = get >>= put . f -runSession' :: Chan FromServerMessage -> SessionContext -> SessionState -> Session a -> IO (a, SessionState) -runSession' chan context state session = runReaderT (runStateT conduit state) context - where conduit = runConduit $ chanSource chan .| runConduitParser session +instance Monad m => HasState s (ParserStateReader a s r m) where + get = lift State.get + put = lift . State.put -get :: Monad m => ParserStateReader a s r m s -get = lift Control.Monad.Trans.State.get +instance HasState SessionState SessionProcessor where + get = lift State.get + put = lift . State.put -put :: Monad m => s -> ParserStateReader a s r m () -put = lift . Control.Monad.Trans.State.put +type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m)) -modify :: Monad m => (s -> s) -> ParserStateReader a s r m () -modify = lift . Control.Monad.Trans.State.modify +type SessionProcessor = ConduitM FromServerMessage FromServerMessage (StateT SessionState (ReaderT SessionContext IO)) -ask :: Monad m => ParserStateReader a s r m r -ask = lift $ lift Control.Monad.Trans.Reader.ask +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 -- | An internal version of 'runSession' that allows for a custom handler to listen to the server. -- It also does not automatically send initialize and exit messages. 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 @@ -83,12 +177,91 @@ runSessionWithHandles serverIn serverOut serverHandler rootDir session = do meaninglessChan <- newChan initRsp <- newEmptyMVar - let context = SessionContext serverIn absRootDir messageChan reqMap initRsp - initState = SessionState (IdInt 9) mempty + let context = SessionContext serverIn absRootDir messageChan reqMap initRsp config + initState = SessionState (IdInt 0) mempty mempty - threadId <- forkIO $ void $ runSession' meaninglessChan context initState (serverHandler serverOut) - (result, _) <- runSession' messageChan context initState session + threadId <- forkIO $ void $ runSession meaninglessChan processor context initState (serverHandler serverOut) + (result, _) <- runSession messageChan processor context initState session killThread threadId return result + + where processor :: SessionProcessor () + processor = awaitForever $ \msg -> do + processMessage msg + yield msg + + +processMessage :: (MonadIO m, HasReader SessionContext m, HasState SessionState m) => FromServerMessage -> m () +processMessage (NotPublishDiagnostics n) = do + let List diags = n ^. params . diagnostics + doc = n ^. params . uri + modify (\s -> + let newDiags = Map.insert doc diags (curDiagnostics s) + in s { curDiagnostics = newDiags }) + +processMessage (ReqApplyWorkspaceEdit r) = do + + allChangeParams <- case r ^. params . edit . documentChanges of + Just (List cs) -> do + mapM_ (checkIfNeedsOpened . (^. textDocument . uri)) cs + return $ map getParams cs + Nothing -> case r ^. params . edit . changes of + Just cs -> do + mapM_ checkIfNeedsOpened (HashMap.keys cs) + return $ concatMap (uncurry getChangeParams) (HashMap.toList cs) + Nothing -> error "No changes!" + + oldVFS <- vfs <$> get + newVFS <- liftIO $ changeFromServerVFS oldVFS r + modify (\s -> s { vfs = newVFS }) + + let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) allChangeParams + mergedParams = map mergeParams groupedParams + + -- TODO: Don't do this when replaying a session + forM_ mergedParams (sendMessage . NotificationMessage "2.0" TextDocumentDidChange) + + where checkIfNeedsOpened uri = do + oldVFS <- vfs <$> get + ctx <- ask + + -- if its not open, open it + unless (uri `Map.member` oldVFS) $ do + let fp = fromJust $ uriToFilePath 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 <$> get + newVFS <- liftIO $ openVFS oldVFS msg + modify (\s -> s { vfs = newVFS }) + + getParams (TextDocumentEdit docId (List edits)) = + let changeEvents = map (\e -> TextDocumentContentChangeEvent (Just (e ^. range)) Nothing (e ^. newText)) edits + in DidChangeTextDocumentParams docId (List changeEvents) + + textDocumentVersions uri = map (VersionedTextDocumentIdentifier uri) [0..] + + textDocumentEdits uri edits = map (\(v, e) -> TextDocumentEdit v (List [e])) $ zip (textDocumentVersions uri) edits + + getChangeParams uri (List edits) = map getParams (textDocumentEdits uri (reverse edits)) + + mergeParams :: [DidChangeTextDocumentParams] -> DidChangeTextDocumentParams + mergeParams params = let events = concat (toList (map (toList . (^. contentChanges)) params)) + in DidChangeTextDocumentParams (head params ^. textDocument) (List events) +processMessage _ = return () + +sendMessage :: (MonadIO m, HasReader SessionContext m, ToJSON a) => a -> m () +sendMessage msg = do + h <- serverIn <$> ask + let encoded = encode msg + liftIO $ do + + setSGR [SetColor Foreground Vivid Cyan] + putStrLn $ "--> " ++ B.unpack encoded + setSGR [Reset] + + B.hPut h (addHeader encoded)