-- * Sessions
runSession
, runSessionWithHandler
- -- | 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
- -- @
, Session
-- * Sending
, sendRequest
, sendNotification
, sendRequest'
, sendNotification'
- , sendResponse'
+ , sendResponse
-- * Receving
+ , anyRequest
, request
+ , anyResponse
, response
+ , anyNotification
, notification
, loggingNotification
- -- * Parsing
+ , publishDiagnosticsNotification
+ -- * Combinators
+ , choice
+ , option
+ , optional
+ , between
+ , some
, many
+ , sepBy
+ , sepBy1
+ , sepEndBy1
+ , sepEndBy
+ , endBy1
+ , endBy
+ , count
+ , manyTill
, skipMany
+ , skipSome
+ , skipManyTill
+ , skipSomeTill
+ , (<|>)
+ , satisfy
-- * Utilities
+ , openDoc
, getDocItem
, getDocUri
) where
+import Control.Applicative
+import Control.Applicative.Combinators
import Control.Monad
-import Control.Monad.Trans.Class
import Control.Monad.IO.Class
-import Control.Monad.Trans.Reader
import Control.Concurrent
+import Control.Lens hiding ((.=))
import qualified Data.Text as T
import qualified Data.Text.IO as T
import Data.Aeson
import qualified Data.ByteString.Lazy.Char8 as B
import Data.Default
-import Data.Proxy
import System.Process
-import Language.Haskell.LSP.Types hiding (error, id)
-import Language.Haskell.LSP.Messages
+import Language.Haskell.LSP.Types
+import qualified Language.Haskell.LSP.Types as LSP (error, id)
import Language.Haskell.LSP.Test.Compat
import System.IO
import System.Directory
import System.FilePath
import Language.Haskell.LSP.Test.Decoding
import Language.Haskell.LSP.Test.Parsing
-import Text.Parsec
-- | Starts a new session.
runSession :: FilePath -- ^ The filepath to the root directory for the session.
runSessionWithHandler listenServer rootDir $ do
-- Wrap the session around initialize and shutdown calls
- sendRequest (Proxy :: Proxy InitializeRequest) Initialize initializeParams
- -- (ResponseMessage _ _ (Just (InitializeResponseCapabilities _)) e) <- getMessage
- -- liftIO $ maybe (return ()) (putStrLn . ("Error when initializing: " ++) . show ) e
- (RspInitialize _ ) <- response
+ sendRequest Initialize initializeParams
+ initRsp <- response :: Session InitializeResponse
+ liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRsp ^. LSP.error)
sendNotification Initialized InitializedParams
sendNotification Exit ExitParams
+-- | 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.
runSessionWithHandler :: (Handle -> Session ())
-> FilePath
-> Session a
let context = SessionContext serverIn absRootDir messageChan reqMap
initState = SessionState (IdInt 9)
- forkIO $ void $ runReaderT (runParserT (serverHandler serverOut) initState "" meaninglessChan) context
- result <- runReaderT (runParserT session initState "" messageChan) context
+ threadId <- forkIO $ void $ runSession' meaninglessChan context initState (serverHandler serverOut)
+ (result, _) <- runSession' messageChan context initState session
terminateProcess serverProc
+ killThread threadId
- case result of
- Right x -> return x
- Left err -> error $ show err
+ return result
-- | Listens to the server output, makes sure it matches the record and
-- signals any semaphores
listenServer serverOut = do
msgBytes <- liftIO $ getNextMessage serverOut
- context <- lift ask
+ context <- ask
reqMap <- liftIO $ readMVar $ requestMap context
liftIO $ writeChan (messageChan context) $ decodeFromServerMsg reqMap msgBytes
-- (DocumentSymbolParams docId)
-- @
sendRequest
- :: forall params resp. (ToJSON params, ToJSON resp, FromJSON resp)
- => Proxy (RequestMessage ClientMethod params resp) -- ^ A proxy to provide more type information about the request.
- -> ClientMethod -- ^ The request method.
+ :: (ToJSON params)
+ => --Proxy (RequestMessage ClientMethod params resp) -- ^ A proxy to provide more type information about the request.
+ ClientMethod -- ^ The request method.
-> params -- ^ The request parameters.
-> Session LspId -- ^ The id of the request that was sent.
-sendRequest _ method params = do
- id <- curReqId <$> getState
- modifyState $ \c -> c { curReqId = nextId id }
+sendRequest method params = do
+ id <- curReqId <$> get
+ modify $ \c -> c { curReqId = nextId id }
- let req = RequestMessage "2.0" id method params :: RequestMessage ClientMethod params resp
+ let req = RequestMessage' "2.0" id method params
- sendRequest' req
+ -- Update the request map
+ reqMap <- requestMap <$> ask
+ liftIO $ modifyMVar_ reqMap $
+ \r -> return $ updateRequestMap r id method
+
+ sendMessage req
return id
where nextId (IdInt i) = IdInt (i + 1)
nextId (IdString s) = IdString $ T.pack $ show $ read (T.unpack s) + 1
+-- | A custom type for request message that doesn't
+-- need a response type, allows us to infer the request
+-- message type without using proxies.
+data RequestMessage' a = RequestMessage' T.Text LspId ClientMethod a
+
+instance ToJSON a => ToJSON (RequestMessage' a) where
+ toJSON (RequestMessage' rpc id method params) =
+ object ["jsonrpc" .= rpc, "id" .= id, "method" .= method, "params" .= params]
+
+
sendRequest' :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
sendRequest' req = do
-- Update the request map
- reqMap <- requestMap <$> lift ask
- liftIO $ modifyMVar_ reqMap (return . flip updateRequestMap req)
+ reqMap <- requestMap <$> ask
+ liftIO $ modifyMVar_ reqMap $
+ \r -> return $ updateRequestMap r (req ^. LSP.id) (req ^. method)
sendMessage req
sendNotification' :: (ToJSON a, ToJSON b) => NotificationMessage a b -> Session ()
sendNotification' = sendMessage
-sendResponse' :: ToJSON a => ResponseMessage a -> Session ()
-sendResponse' = sendMessage
+sendResponse :: ToJSON a => ResponseMessage a -> Session ()
+sendResponse = sendMessage
sendMessage :: ToJSON a => a -> Session ()
sendMessage msg = do
- h <- serverIn <$> lift ask
+ h <- serverIn <$> ask
liftIO $ B.hPut h $ addHeader (encode msg)
+-- | Opens a text document and sends a notification to the client.
+openDoc :: FilePath -> String -> Session TextDocumentIdentifier
+openDoc file languageId = do
+ item <- getDocItem file languageId
+ sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams item)
+ TextDocumentIdentifier <$> getDocUri file
+
-- | Reads in a text document as the first version.
getDocItem :: FilePath -- ^ The path to the text document to read in.
-> String -- ^ The language ID, e.g "haskell" for .hs files.
-> Session TextDocumentItem
getDocItem file languageId = do
- context <- lift ask
+ context <- ask
let fp = rootDir context </> file
contents <- liftIO $ T.readFile fp
return $ TextDocumentItem (filePathToUri fp) (T.pack languageId) 0 contents
-- | Gets the Uri for the file corrected to the session directory.
getDocUri :: FilePath -> Session Uri
getDocUri file = do
- context <- lift ask
+ context <- ask
let fp = rootDir context </> file
return $ filePathToUri fp
projects / lsp-test.git / blobdiff