, runSessionWithConfig
, SessionConfig(..)
, defaultConfig
- , module Language.Haskell.LSP.Types.Capabilities
+ , C.fullCaps
-- ** Exceptions
, module Language.Haskell.LSP.Test.Exceptions
, withTimeout
, initializeResponse
-- ** Documents
, openDoc
+ , openDoc'
, closeDoc
+ , changeDoc
, documentContents
, getDocumentEdit
, getDocUri
, waitForDiagnostics
, waitForDiagnosticsSource
, noDiagnostics
+ , getCurrentDiagnostics
-- ** Commands
, executeCommand
-- ** Code Actions
+ , getCodeActions
, getAllCodeActions
, executeCodeAction
-- ** Completions
, getReferences
-- ** Definitions
, getDefinitions
+ , getTypeDefinitions
-- ** Renaming
, rename
-- ** Hover
import Data.Aeson
import Data.Default
import qualified Data.HashMap.Strict as HashMap
+import Data.IORef
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 Language.Haskell.LSP.Types.Capabilities
+import Language.Haskell.LSP.Types
+import Language.Haskell.LSP.Types.Lens hiding
+ (id, capabilities, message, executeCommand, applyEdit, rename)
+import qualified Language.Haskell.LSP.Types.Lens as LSP
+import qualified Language.Haskell.LSP.Types.Capabilities as C
import Language.Haskell.LSP.Messages
import Language.Haskell.LSP.VFS
import Language.Haskell.LSP.Test.Compat
import System.IO
import System.Directory
import System.FilePath
-import qualified Yi.Rope as Rope
+import qualified Data.Rope.UTF16 as Rope
-- | Starts a new session.
--
-- > params = TextDocumentPositionParams doc
-- > hover <- request TextDocumentHover params
runSession :: String -- ^ The command to run the server.
- -> ClientCapabilities -- ^ The capabilities that the client should declare.
+ -> C.ClientCapabilities -- ^ The capabilities that the client should declare.
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
-- | Starts a new sesion with a custom configuration.
runSessionWithConfig :: SessionConfig -- ^ Configuration options for the session.
-> String -- ^ The command to run the server.
- -> ClientCapabilities -- ^ The capabilities that the client should declare.
+ -> C.ClientCapabilities -- ^ The capabilities that the client should declare.
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
runSessionWithConfig config serverExe caps rootDir session = do
+ -- We use this IORef to make exception non-fatal when the server is supposed to shutdown.
+ exitOk <- newIORef False
pid <- getCurrentProcessID
absRootDir <- canonicalizePath rootDir
Nothing
caps
(Just TraceOff)
+ Nothing
withServer serverExe (logStdErr config) $ \serverIn serverOut _ ->
- runSessionWithHandles serverIn serverOut listenServer config caps rootDir $ do
+ runSessionWithHandles serverIn serverOut (\h c -> catchWhenTrue exitOk $ listenServer h c) config caps rootDir $ do
-- Wrap the session around initialize and shutdown calls
initRspMsg <- request Initialize initializeParams :: Session InitializeResponse
sendNotification Initialized InitializedParams
+ case lspConfig config of
+ Just cfg -> sendNotification WorkspaceDidChangeConfiguration (DidChangeConfigurationParams cfg)
+ Nothing -> return ()
+
-- Run the actual test
result <- session
+ liftIO $ atomicWriteIORef exitOk True
sendNotification Exit ExitParams
return result
where
+ catchWhenTrue :: IORef Bool -> IO () -> IO ()
+ catchWhenTrue exitOk a =
+ a `catch` (\e -> do
+ x <- readIORef exitOk
+ unless x $ throw (e :: SomeException))
+
-- | Listens to the server output, makes sure it matches the record and
-- signals any semaphores
+ -- Note that on Windows, we cannot kill a thread stuck in getNextMessage.
+ -- So we have to wait for the exit notification to kill the process first
+ -- and then getNextMessage will fail.
listenServer :: Handle -> SessionContext -> IO ()
listenServer serverOut context = do
msgBytes <- getNextMessage serverOut
modify (\s -> s { vfs = newVFS })
sendMessage n
+sendNotification TextDocumentDidChange params = do
+ let params' = fromJust $ decode $ encode params
+ n :: DidChangeTextDocumentNotification
+ n = NotificationMessage "2.0" TextDocumentDidChange params'
+ oldVFS <- vfs <$> get
+ newVFS <- liftIO $ changeFromClientVFS oldVFS n
+ modify (\s -> s { vfs = newVFS })
+ sendMessage n
+
sendNotification method params = sendMessage (NotificationMessage "2.0" method params)
-- | Sends a response to the server.
-- | 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.
- -> Session TextDocumentItem
- getDocItem file languageId = do
context <- ask
let fp = rootDir context </> file
contents <- liftIO $ T.readFile fp
- return $ TextDocumentItem (filePathToUri fp) (T.pack languageId) 0 contents
+ openDoc' file languageId contents
+
+-- | This is a variant of `openDoc` that takes the file content as an argument.
+openDoc' :: FilePath -> String -> T.Text -> Session TextDocumentIdentifier
+openDoc' file languageId contents = do
+ context <- ask
+ let fp = rootDir context </> file
+ uri = filePathToUri fp
+ item = TextDocumentItem uri (T.pack languageId) 0 contents
+ sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams item)
+ pure $ TextDocumentIdentifier uri
-- | Closes a text document and sends a notification to the client.
closeDoc :: TextDocumentIdentifier -> Session ()
let params = DidCloseTextDocumentParams (TextDocumentIdentifier (docId ^. uri))
sendNotification TextDocumentDidClose params
- oldVfs <- vfs <$> get
- let notif = NotificationMessage "" TextDocumentDidClose params
- newVfs <- liftIO $ closeVFS oldVfs notif
- modify $ \s -> s { vfs = newVfs }
+-- | Changes a text document and sends a notification to the client
+changeDoc :: TextDocumentIdentifier -> [TextDocumentContentChangeEvent] -> Session ()
+changeDoc docId changes = do
+ verDoc <- getVersionedDoc docId
+ let params = DidChangeTextDocumentParams (verDoc & version . non 0 +~ 1) (List changes)
+ sendNotification TextDocumentDidChange params
-- | Gets the Uri for the file corrected to the session directory.
getDocUri :: FilePath -> Session Uri
matches d = d ^. source == Just (T.pack src)
-- | Expects a 'PublishDiagnosticsNotification' and throws an
--- 'UnexpectedDiagnosticsException' if there are any diagnostics
+-- 'UnexpectedDiagnostics' exception if there are any diagnostics
-- returned.
noDiagnostics :: Session ()
noDiagnostics = do
when (diagsNot ^. params . LSP.diagnostics /= List []) $ liftIO $ throw UnexpectedDiagnostics
-- | Returns the symbols in a document.
-getDocumentSymbols :: TextDocumentIdentifier -> Session [SymbolInformation]
+getDocumentSymbols :: TextDocumentIdentifier -> Session (Either [DocumentSymbol] [SymbolInformation])
getDocumentSymbols doc = do
- ResponseMessage _ rspLid mRes mErr <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc)
+ ResponseMessage _ rspLid mRes mErr <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc) :: Session DocumentSymbolsResponse
maybe (return ()) (throw . UnexpectedResponseError rspLid) mErr
- let (Just (List symbols)) = mRes
- return symbols
+ case mRes of
+ Just (DSDocumentSymbols (List xs)) -> return (Left xs)
+ Just (DSSymbolInformation (List xs)) -> return (Right xs)
+ Nothing -> Prelude.error "No result and no error in DocumentSymbolsResponse"
+
+-- | Returns the code actions in the specified range.
+getCodeActions :: TextDocumentIdentifier -> Range -> Session [CAResult]
+getCodeActions doc range = do
+ ctx <- getCodeActionContext doc
+ rsp <- request TextDocumentCodeAction (CodeActionParams doc range ctx)
+
+ case rsp ^. result of
+ Just (List xs) -> return xs
+ _ -> throw (UnexpectedResponseError (rsp ^. LSP.id) (fromJust $ rsp ^. LSP.error))
-- | 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 :: TextDocumentIdentifier -> Session [CAResult]
getAllCodeActions doc = do
- curDiags <- fromMaybe [] . Map.lookup (doc ^. uri) . curDiagnostics <$> get
- let ctx = CodeActionContext (List curDiags) Nothing
+ ctx <- getCodeActionContext doc
- foldM (go ctx) [] curDiags
+ foldM (go ctx) [] =<< getCurrentDiagnostics doc
where
- go :: CodeActionContext -> [CommandOrCodeAction] -> Diagnostic -> Session [CommandOrCodeAction]
+ go :: CodeActionContext -> [CAResult] -> Diagnostic -> Session [CAResult]
go ctx acc diag = do
ResponseMessage _ rspLid mRes mErr <- request TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx)
let Just (List cmdOrCAs) = mRes
in return (acc ++ cmdOrCAs)
+getCodeActionContext :: TextDocumentIdentifier -> Session CodeActionContext
+getCodeActionContext doc = do
+ curDiags <- getCurrentDiagnostics doc
+ return $ CodeActionContext (List curDiags) Nothing
+
+-- | Returns the current diagnostics that have been sent to the client.
+-- Note that this does not wait for more to come in.
+getCurrentDiagnostics :: TextDocumentIdentifier -> Session [Diagnostic]
+getCurrentDiagnostics doc = fromMaybe [] . Map.lookup (doc ^. uri) . curDiagnostics <$> get
+
-- | Executes a command.
executeCommand :: Command -> Session ()
executeCommand cmd = do
fs <- vfs <$> get
let ver =
case fs Map.!? uri of
- Just (VirtualFile v _) -> Just v
+ Just (VirtualFile v _ _) -> Just v
_ -> Nothing
return (VersionedTextDocumentIdentifier uri ver)
caps <- asks sessionCapabilities
let supportsDocChanges = fromMaybe False $ do
- let ClientCapabilities mWorkspace _ _ = caps
- WorkspaceClientCapabilities _ mEdit _ _ _ _ _ _ <- mWorkspace
- WorkspaceEditClientCapabilities mDocChanges <- mEdit
+ let mWorkspace = C._workspace caps
+ C.WorkspaceClientCapabilities _ mEdit _ _ _ _ _ _ <- mWorkspace
+ C.WorkspaceEditClientCapabilities mDocChanges <- mEdit
mDocChanges
let wEdit = if supportsDocChanges
let params = TextDocumentPositionParams doc pos
in getResponseResult <$> request TextDocumentDefinition params
+-- | Returns the type definition(s) for the term at the specified position.
+getTypeDefinitions :: TextDocumentIdentifier -- ^ The document the term is in.
+ -> Position -- ^ The position the term is at.
+ -> Session [Location] -- ^ The location(s) of the definitions
+getTypeDefinitions doc pos =
+ let params = TextDocumentPositionParams doc pos
+ in getResponseResult <$> request TextDocumentTypeDefinition params
+
-- | Renames the term at the specified position.
rename :: TextDocumentIdentifier -> Position -> String -> Session ()
rename doc pos newName = do