(
-- * Sessions
runSession
- , runSessionWithHandler
+ , runSessionWithHandles
+ , runSessionWithConfig
, Session
+ , SessionConfig(..)
+ , SessionException(..)
+ , anySessionException
+ , withTimeout
-- * Sending
, sendRequest
- , sendNotification
+ , sendRequest_
, sendRequest'
+ , sendNotification
+ , sendRequestMessage
, sendNotification'
, sendResponse
-- * Receving
- , request
- , response
- , notification
+ , message
+ , anyRequest
+ , anyResponse
+ , anyNotification
+ , anyMessage
, loggingNotification
+ , publishDiagnosticsNotification
-- * Combinators
- , choice
- , option
- , optional
- , skipOptional
- , between
- , some
- , many
- , sepBy
- , sepBy1
- , sepByNonEmpty
- , sepEndBy1
- , sepEndByNonEmpty
- , sepEndBy
- , endBy1
- , endByNonEmpty
- , endBy
- , count
- , chainl
- , chainr
- , chainl1
- , chainr1
- , manyTill
- , try
- , (<?>)
- , skipMany
- , skipSome
- , unexpected
- , notFollowedBy
- , (<|>)
, satisfy
-- * Utilities
- , getDocItem
+ , initializeResponse
+ -- ** Documents
+ , openDoc
+ , documentContents
+ , getDocumentEdit
, getDocUri
+ , getVersionedDoc
+ -- ** Symbols
+ , getDocumentSymbols
+ -- ** Diagnostics
+ , waitForDiagnostics
+ , noDiagnostics
+ -- ** Commands
+ , executeCommand
+ -- ** Code Actions
+ , getAllCodeActions
+ , executeCodeAction
+ -- ** Completions
+ , getCompletions
+ -- ** Edits
+ , applyEdit
) where
-import Control.Applicative
+import Control.Applicative.Combinators
+import Control.Concurrent
import Control.Monad
import Control.Monad.IO.Class
-import Control.Concurrent
-import Control.Lens
+import Control.Exception
+import Control.Lens hiding ((.=), List)
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
-import qualified Language.Haskell.LSP.Types as LSP (error)
+import qualified Data.HashMap.Strict as HashMap
+import qualified Data.Map as Map
+import Data.Maybe
+import Language.Haskell.LSP.Types hiding (id, capabilities, message)
+import qualified Language.Haskell.LSP.Types as LSP
+import qualified Language.Haskell.LSP.Types.Capabilities as LSP
import Language.Haskell.LSP.Messages
+import Language.Haskell.LSP.VFS
import Language.Haskell.LSP.Test.Compat
+import Language.Haskell.LSP.Test.Decoding
+import Language.Haskell.LSP.Test.Exceptions
+import Language.Haskell.LSP.Test.Parsing
+import Language.Haskell.LSP.Test.Session
+import Language.Haskell.LSP.Test.Server
import System.IO
import System.Directory
import System.FilePath
-import Language.Haskell.LSP.Test.Decoding
-import Language.Haskell.LSP.Test.Parsing
-import Text.Parser.Combinators
+import qualified Yi.Rope as Rope
-- | Starts a new session.
-runSession :: FilePath -- ^ The filepath to the root directory for the session.
+runSession :: String -- ^ The command to run the server.
+ -> FilePath -- ^ The filepath to the root directory for the session.
+ -> Session a -- ^ The session to run.
+ -> IO a
+runSession = runSessionWithConfig def
+
+-- | Starts a new sesion with a client with the specified capabilities.
+runSessionWithConfig :: SessionConfig -- ^ The capabilities the client should have.
+ -> String -- ^ The command to run the server.
+ -> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
- -> IO ()
-runSession rootDir session = do
- pid <- getProcessID
+ -> IO a
+runSessionWithConfig config serverExe rootDir session = do
+ pid <- getCurrentProcessID
absRootDir <- canonicalizePath rootDir
let initializeParams = InitializeParams (Just pid)
(Just $ T.pack absRootDir)
(Just $ filePathToUri absRootDir)
Nothing
- def
+ (capabilities config)
(Just TraceOff)
-
- runSessionWithHandler listenServer rootDir $ do
+ withServer serverExe (logStdErr config) $ \serverIn serverOut _ ->
+ runSessionWithHandles serverIn serverOut listenServer config rootDir $ do
-- Wrap the session around initialize and shutdown calls
- sendRequest (Proxy :: Proxy InitializeRequest) Initialize initializeParams
- RspInitialize initRsp <- response
- liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRsp ^. LSP.error)
+ initRspMsg <- sendRequest Initialize initializeParams :: Session InitializeResponse
+
+ liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRspMsg ^. LSP.error)
+
+ initRspVar <- initRsp <$> ask
+ liftIO $ putMVar initRspVar initRspMsg
sendNotification Initialized InitializedParams
-- Run the actual test
- session
+ result <- session
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
- -> IO a
-runSessionWithHandler serverHandler rootDir session = do
- absRootDir <- canonicalizePath rootDir
-
- (Just serverIn, Just serverOut, Nothing, serverProc) <- createProcess
- (proc "hie" ["--lsp", "-d", "-l", "/tmp/hie-test.log"])
- { std_in = CreatePipe, std_out = CreatePipe }
-
- hSetBuffering serverIn NoBuffering
- hSetBuffering serverOut NoBuffering
-
- reqMap <- newMVar newRequestMap
- messageChan <- newChan
- meaninglessChan <- newChan
-
- let context = SessionContext serverIn absRootDir messageChan reqMap
- initState = SessionState (IdInt 9)
-
- forkIO $ void $ runSession' meaninglessChan context initState (serverHandler serverOut)
- (result, _) <- runSession' messageChan context initState session
-
- terminateProcess serverProc
-
return result
-
+ where
-- | Listens to the server output, makes sure it matches the record and
-- signals any semaphores
-listenServer :: Handle -> Session ()
-listenServer serverOut = do
- msgBytes <- liftIO $ getNextMessage serverOut
-
- context <- ask
- reqMap <- liftIO $ readMVar $ requestMap context
-
- liftIO $ writeChan (messageChan context) $ decodeFromServerMsg reqMap msgBytes
-
- listenServer serverOut
-
--- | Sends a request to the server.
---
+ listenServer :: Handle -> SessionContext -> IO ()
+ listenServer serverOut context = do
+ msgBytes <- getNextMessage serverOut
+
+ reqMap <- readMVar $ requestMap context
+
+ let msg = decodeFromServerMsg reqMap msgBytes
+ writeChan (messageChan context) (ServerMessage msg)
+
+ listenServer serverOut context
+
+-- | The current text contents of a document.
+documentContents :: TextDocumentIdentifier -> Session T.Text
+documentContents doc = do
+ vfs <- vfs <$> get
+ let file = vfs Map.! (doc ^. uri)
+ return $ Rope.toText $ Language.Haskell.LSP.VFS._text file
+
+-- | Parses an ApplyEditRequest, checks that it is for the passed document
+-- and returns the new content
+getDocumentEdit :: TextDocumentIdentifier -> Session T.Text
+getDocumentEdit doc = do
+ req <- message :: Session ApplyWorkspaceEditRequest
+
+ unless (checkDocumentChanges req || checkChanges req) $
+ liftIO $ throw (IncorrectApplyEditRequest (show req))
+
+ documentContents doc
+ where
+ checkDocumentChanges :: ApplyWorkspaceEditRequest -> Bool
+ checkDocumentChanges req =
+ let changes = req ^. params . edit . documentChanges
+ maybeDocs = fmap (fmap (^. textDocument . uri)) changes
+ in case maybeDocs of
+ Just docs -> (doc ^. uri) `elem` docs
+ Nothing -> False
+ checkChanges :: ApplyWorkspaceEditRequest -> Bool
+ checkChanges req =
+ let mMap = req ^. params . edit . changes
+ in maybe False (HashMap.member (doc ^. uri)) mMap
+
+-- | Sends a request to the server and waits for its response.
-- @
--- sendRequest (Proxy :: Proxy DocumentSymbolRequest)
--- TextDocumentDocumentSymbol
--- (DocumentSymbolParams docId)
+-- rsp <- sendRequest TextDocumentDocumentSymbol params :: Session DocumentSymbolsResponse
-- @
-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.
+-- Note: will skip any messages in between the request and the response.
+sendRequest :: (ToJSON params, FromJSON a) => ClientMethod -> params -> Session (ResponseMessage a)
+sendRequest m = sendRequest' m >=> skipManyTill anyMessage . responseForId
+
+-- | Send a request to the server and wait for its response,
+-- but discard it.
+sendRequest_ :: ToJSON params => ClientMethod -> params -> Session ()
+sendRequest_ p = void . (sendRequest p :: ToJSON params => params -> Session (ResponseMessage Value))
+
+-- | Sends a request to the server without waiting on the response.
+sendRequest'
+ :: ToJSON params
+ => ClientMethod -- ^ The request method.
-> params -- ^ The request parameters.
-> Session LspId -- ^ The id of the request that was sent.
-sendRequest _ method params = do
+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
-sendRequest' :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
-sendRequest' req = do
+-- | 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]
+
+
+sendRequestMessage :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
+sendRequestMessage req = do
-- Update the request map
reqMap <- requestMap <$> ask
- liftIO $ modifyMVar_ reqMap (return . flip updateRequestMap req)
+ liftIO $ modifyMVar_ reqMap $
+ \r -> return $ updateRequestMap r (req ^. LSP.id) (req ^. method)
sendMessage req
=> ClientMethod -- ^ The notification method.
-> a -- ^ The notification parameters.
-> Session ()
-sendNotification method params =
- let notif = NotificationMessage "2.0" method params
- in sendNotification' notif
+
+-- | Open a virtual file if we send a did open text document notification
+sendNotification TextDocumentDidOpen params = do
+ let params' = fromJust $ decode $ encode params
+ n :: DidOpenTextDocumentNotification
+ n = NotificationMessage "2.0" TextDocumentDidOpen params'
+ oldVFS <- vfs <$> get
+ newVFS <- liftIO $ openVFS oldVFS n
+ modify (\s -> s { vfs = newVFS })
+ sendNotification' n
+
+-- | Close a virtual file if we send a close text document notification
+sendNotification TextDocumentDidClose params = do
+ let params' = fromJust $ decode $ encode params
+ n :: DidCloseTextDocumentNotification
+ n = NotificationMessage "2.0" TextDocumentDidClose params'
+ oldVFS <- vfs <$> get
+ newVFS <- liftIO $ closeVFS oldVFS n
+ modify (\s -> s { vfs = newVFS })
+ sendNotification' n
+
+sendNotification method params = sendNotification' (NotificationMessage "2.0" method params)
sendNotification' :: (ToJSON a, ToJSON b) => NotificationMessage a b -> Session ()
sendNotification' = sendMessage
sendResponse :: ToJSON a => ResponseMessage a -> Session ()
sendResponse = sendMessage
-sendMessage :: ToJSON a => a -> Session ()
-sendMessage msg = do
- h <- serverIn <$> ask
- liftIO $ B.hPut h $ addHeader (encode msg)
-
+-- | Returns the initialize response that was received from the server.
+-- The initialize requests and responses are not included the session,
+-- so if you need to test it use this.
+initializeResponse :: Session InitializeResponse
+initializeResponse = initRsp <$> ask >>= (liftIO . readMVar)
+
+-- | Opens a text document and sends a notification to the client.
+openDoc :: FilePath -> String -> Session TextDocumentIdentifier
+openDoc file languageId = do
+ item <- getDocItem file languageId
+ sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams item)
+ TextDocumentIdentifier <$> getDocUri file
+ where
-- | 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.
context <- ask
let fp = rootDir context </> file
return $ filePathToUri fp
+
+-- | Waits for diagnostics to be published and returns them.
+waitForDiagnostics :: Session [Diagnostic]
+waitForDiagnostics = do
+ diagsNot <- skipManyTill anyMessage message :: Session PublishDiagnosticsNotification
+ let (List diags) = diagsNot ^. params . LSP.diagnostics
+ return diags
+
+-- | Expects a 'PublishDiagnosticsNotification' and throws an
+-- 'UnexpectedDiagnosticsException' if there are any diagnostics
+-- returned.
+noDiagnostics :: Session ()
+noDiagnostics = do
+ diagsNot <- message :: Session PublishDiagnosticsNotification
+ when (diagsNot ^. params . LSP.diagnostics /= List []) $ liftIO $ throw UnexpectedDiagnostics
+
+-- | Returns the symbols in a document.
+getDocumentSymbols :: TextDocumentIdentifier -> Session [SymbolInformation]
+getDocumentSymbols doc = do
+ ResponseMessage _ rspLid mRes mErr <- sendRequest TextDocumentDocumentSymbol (DocumentSymbolParams doc)
+ maybe (return ()) (throw . UnexpectedResponseError rspLid) mErr
+ let (Just (List symbols)) = mRes
+ return symbols
+
+-- | Returns all the code actions in a document by
+-- querying the code actions at each of the current
+-- diagnostics' positions.
+getAllCodeActions :: TextDocumentIdentifier -> Session [CommandOrCodeAction]
+getAllCodeActions doc = do
+ curDiags <- fromMaybe [] . Map.lookup (doc ^. uri) . curDiagnostics <$> get
+ let ctx = CodeActionContext (List curDiags) Nothing
+
+ foldM (go ctx) [] curDiags
+
+ where
+ go :: CodeActionContext -> [CommandOrCodeAction] -> Diagnostic -> Session [CommandOrCodeAction]
+ go ctx acc diag = do
+ ResponseMessage _ rspLid mRes mErr <- sendRequest TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx)
+
+ case mErr of
+ Just e -> throw (UnexpectedResponseError rspLid e)
+ Nothing ->
+ let Just (List cmdOrCAs) = mRes
+ in return (acc ++ cmdOrCAs)
+
+-- | Executes a command.
+executeCommand :: Command -> Session ()
+executeCommand cmd = do
+ let args = decode $ encode $ fromJust $ cmd ^. arguments
+ execParams = ExecuteCommandParams (cmd ^. command) args
+ sendRequest_ WorkspaceExecuteCommand execParams
+
+-- | Executes a code action.
+-- Matching with the specification, if a code action
+-- contains both an edit and a command, the edit will
+-- be applied first.
+executeCodeAction :: CodeAction -> Session ()
+executeCodeAction action = do
+ maybe (return ()) handleEdit $ action ^. edit
+ maybe (return ()) executeCommand $ action ^. command
+
+ where handleEdit :: WorkspaceEdit -> Session ()
+ handleEdit e =
+ -- Its ok to pass in dummy parameters here as they aren't used
+ let req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams e)
+ in updateState (ReqApplyWorkspaceEdit req)
+
+-- | Adds the current version to the document, as tracked by the session.
+getVersionedDoc :: TextDocumentIdentifier -> Session VersionedTextDocumentIdentifier
+getVersionedDoc (TextDocumentIdentifier uri) = do
+ fs <- vfs <$> get
+ let ver =
+ case fs Map.!? uri of
+ Just (VirtualFile v _) -> Just v
+ _ -> Nothing
+ return (VersionedTextDocumentIdentifier uri ver)
+
+-- | Applys an edit to the document and returns the updated document version.
+applyEdit :: TextDocumentIdentifier -> TextEdit -> Session VersionedTextDocumentIdentifier
+applyEdit doc edit = do
+
+ verDoc <- getVersionedDoc doc
+
+ caps <- asks (capabilities . config)
+
+ let supportsDocChanges = fromMaybe False $ do
+ let LSP.ClientCapabilities mWorkspace _ _ = caps
+ LSP.WorkspaceClientCapabilities _ mEdit _ _ _ _ <- mWorkspace
+ LSP.WorkspaceEditClientCapabilities mDocChanges <- mEdit
+ mDocChanges
+
+ let wEdit = if supportsDocChanges
+ then
+ let docEdit = TextDocumentEdit verDoc (List [edit])
+ in WorkspaceEdit Nothing (Just (List [docEdit]))
+ else
+ let changes = HashMap.singleton (doc ^. uri) (List [edit])
+ in WorkspaceEdit (Just changes) Nothing
+
+ let req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit)
+ updateState (ReqApplyWorkspaceEdit req)
+
+ -- version may have changed
+ getVersionedDoc doc
+
+-- | Returns the completions for the position in the document.
+getCompletions :: TextDocumentIdentifier -> Position -> Session [CompletionItem]
+getCompletions doc pos = do
+ rsp <- sendRequest TextDocumentCompletion (TextDocumentPositionParams doc pos)
+
+ let exc = throw $ UnexpectedResponseError (rsp ^. LSP.id)
+ (fromJust $ rsp ^. LSP.error)
+ res = fromMaybe exc (rsp ^. result)
+ case res of
+ Completions (List items) -> return items
+ CompletionList (CompletionListType _ (List items)) -> return items
projects / lsp-test.git / blobdiff