X-Git-Url: https://git.lukelau.me/?p=lsp-test.git;a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest.hs;h=81bdc8a8b465087baa960fbc6b1303e8497fcff7;hp=8da0cbbee8ba065533e8e0d06ac79e3f35ee4612;hb=a7fd35b1582f9816d8caa90a7b2e3aa765fb0446;hpb=a4180c432755f683d07605f4413135d6cfadc065 diff --git a/src/Language/Haskell/LSP/Test.hs b/src/Language/Haskell/LSP/Test.hs index 8da0cbb..81bdc8a 100644 --- a/src/Language/Haskell/LSP/Test.hs +++ b/src/Language/Haskell/LSP/Test.hs @@ -3,175 +3,275 @@ {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE ExistentialQuantification #-} --- | --- Module : Language.Haskell.LSP.Test --- Description : A functional testing framework for LSP servers. --- Maintainer : luke_lau@icloud.com --- Stability : experimental --- --- A framework for testing at the JSON level. - +{-| +Module : Language.Haskell.LSP.Test +Description : A functional testing framework for LSP servers. +Maintainer : luke_lau@icloud.com +Stability : experimental +Portability : non-portable + +Provides the framework to start functionally testing +. +You should import "Language.Haskell.LSP.Types" alongside this. +-} module Language.Haskell.LSP.Test ( -- * Sessions - runSession - , runSessionWithHandler - , Session + Session + , runSession + -- ** Config + , runSessionWithConfig + , SessionConfig(..) + , defaultConfig + , C.fullCaps + -- ** Exceptions + , module Language.Haskell.LSP.Test.Exceptions + , withTimeout -- * Sending + , request + , request_ , sendRequest , sendNotification - , sendRequest' - , sendNotification' , sendResponse -- * Receving - , anyRequest - , request - , anyResponse - , response - , anyNotification - , notification - , loggingNotification - , publishDiagnosticsNotification - -- * Combinators - , choice - , option - , optional - , between - , some - , many - , sepBy - , sepBy1 - , sepEndBy1 - , sepEndBy - , endBy1 - , endBy - , count - , manyTill - , skipMany - , skipSome - , skipManyTill - , skipSomeTill - , (<|>) - , satisfy + , module Language.Haskell.LSP.Test.Parsing -- * Utilities - , getInitializeResponse + -- | Quick helper functions for common tasks. + + -- ** Initialization + , initializeResponse + -- ** Documents + , createDoc , openDoc - , getDocItem + , closeDoc + , changeDoc + , documentContents + , getDocumentEdit , getDocUri + , getVersionedDoc + -- ** Symbols + , getDocumentSymbols + -- ** Diagnostics + , waitForDiagnostics + , waitForDiagnosticsSource + , noDiagnostics + , getCurrentDiagnostics + -- ** Commands + , executeCommand + -- ** Code Actions + , getCodeActions + , getAllCodeActions + , executeCodeAction + -- ** Completions + , getCompletions + -- ** References + , getReferences + -- ** Definitions + , getDefinitions + , getTypeDefinitions + -- ** Renaming + , rename + -- ** Hover + , getHover + -- ** Highlights + , getHighlights + -- ** Formatting + , formatDoc + , formatRange + -- ** Edits + , applyEdit + -- ** Code lenses + , getCodeLenses + -- ** Capabilities + , getRegisteredCapabilities ) 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 hiding ((.=)) +import Control.Exception +import Control.Lens hiding ((.=), List) +import qualified Data.Map.Strict as Map 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 System.Process +import qualified Data.HashMap.Strict as HashMap +import Data.List +import Data.Maybe import Language.Haskell.LSP.Types -import qualified Language.Haskell.LSP.Types as LSP (error, id) +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 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.Environment import System.IO import System.Directory import System.FilePath -import Language.Haskell.LSP.Test.Decoding -import Language.Haskell.LSP.Test.Parsing +import qualified System.FilePath.Glob as Glob -- | Starts a new session. +-- +-- > runSession "hie" fullCaps "path/to/root/dir" $ do +-- > doc <- openDoc "Desktop/simple.hs" "haskell" +-- > diags <- waitForDiagnostics +-- > let pos = Position 12 5 +-- > params = TextDocumentPositionParams doc +-- > hover <- request TextDocumentHover params runSession :: String -- ^ The command to run the server. + -> 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 +runSession = runSessionWithConfig def + +-- | Starts a new sesion with a custom configuration. +runSessionWithConfig :: SessionConfig -- ^ Configuration options for the session. + -> String -- ^ The command to run the server. + -> 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 () -runSession serverExe rootDir session = do - pid <- getProcessID + -> IO a +runSessionWithConfig config' serverExe caps rootDir session = do + pid <- getCurrentProcessID absRootDir <- canonicalizePath rootDir + config <- envOverrideConfig config' + let initializeParams = InitializeParams (Just pid) (Just $ T.pack absRootDir) (Just $ filePathToUri absRootDir) Nothing - def + caps (Just TraceOff) - - runSessionWithHandler listenServer serverExe rootDir $ do - + Nothing + withServer serverExe (logStdErr config) $ \serverIn serverOut serverProc -> + runSessionWithHandles serverIn serverOut serverProc listenServer config caps rootDir exitServer $ do -- Wrap the session around initialize and shutdown calls - sendRequest Initialize initializeParams - initRspMsg <- response :: Session InitializeResponse + -- initRspMsg <- sendRequest Initialize initializeParams :: Session InitializeResponse + initReqId <- sendRequest Initialize initializeParams + + -- Because messages can be sent in between the request and response, + -- collect them and then... + (inBetween, initRspMsg) <- manyTill_ anyMessage (responseForId initReqId) - liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRspMsg ^. LSP.error) + case initRspMsg ^. LSP.result of + Left error -> liftIO $ putStrLn ("Error while initializing: " ++ show error) + Right _ -> pure () initRspVar <- initRsp <$> ask liftIO $ putMVar initRspVar initRspMsg + sendNotification Initialized InitializedParams + case lspConfig config of + Just cfg -> sendNotification WorkspaceDidChangeConfiguration (DidChangeConfigurationParams cfg) + Nothing -> return () - sendNotification Initialized InitializedParams + -- ... relay them back to the user Session so they can match on them! + -- As long as they are allowed. + forM_ inBetween checkLegalBetweenMessage + msgChan <- asks messageChan + liftIO $ writeList2Chan msgChan (ServerMessage <$> inBetween) -- Run the actual test 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 ()) - -> String - -> FilePath - -> Session a - -> IO a -runSessionWithHandler serverHandler serverExe rootDir session = do - absRootDir <- canonicalizePath rootDir - - let createProc = (shell serverExe) { std_in = CreatePipe, std_out = CreatePipe, std_err = CreatePipe } - (Just serverIn, Just serverOut, _, serverProc) <- createProcess createProc - - hSetBuffering serverIn NoBuffering - hSetBuffering serverOut NoBuffering - - reqMap <- newMVar newRequestMap - messageChan <- newChan - meaninglessChan <- newChan - initRsp <- newEmptyMVar - - let context = SessionContext serverIn absRootDir messageChan reqMap initRsp - initState = SessionState (IdInt 9) - - threadId <- forkIO $ void $ runSession' meaninglessChan context initState (serverHandler serverOut) - (result, _) <- runSession' messageChan context initState session - - terminateProcess serverProc - killThread threadId - - return result - --- | 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. --- + where + -- | Asks the server to shutdown and exit politely + exitServer :: Session () + exitServer = request_ Shutdown (Nothing :: Maybe Value) >> sendNotification Exit ExitParams + + -- | Listens to the server output until the shutdown ack, + -- makes sure it matches the record and signals any semaphores + 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) + + case msg of + (RspShutdown _) -> return () + _ -> listenServer serverOut context + + -- | Is this message allowed to be sent by the server between the intialize + -- request and response? + -- https://microsoft.github.io/language-server-protocol/specifications/specification-3-15/#initialize + checkLegalBetweenMessage :: FromServerMessage -> Session () + checkLegalBetweenMessage (NotShowMessage _) = pure () + checkLegalBetweenMessage (NotLogMessage _) = pure () + checkLegalBetweenMessage (NotTelemetry _) = pure () + checkLegalBetweenMessage (ReqShowMessage _) = pure () + checkLegalBetweenMessage msg = throw (IllegalInitSequenceMessage msg) + + -- | Check environment variables to override the config + envOverrideConfig :: SessionConfig -> IO SessionConfig + envOverrideConfig cfg = do + logMessages' <- fromMaybe (logMessages cfg) <$> checkEnv "LSP_TEST_LOG_MESSAGES" + logStdErr' <- fromMaybe (logStdErr cfg) <$> checkEnv "LSP_TEST_LOG_STDERR" + return $ cfg { logMessages = logMessages', logStdErr = logStdErr' } + where checkEnv :: String -> IO (Maybe Bool) + checkEnv s = fmap convertVal <$> lookupEnv s + convertVal "0" = False + convertVal _ = True + +-- | The current text contents of a document. +documentContents :: TextDocumentIdentifier -> Session T.Text +documentContents doc = do + vfs <- vfs <$> get + let file = vfsMap vfs Map.! toNormalizedUri (doc ^. uri) + return (virtualFileText 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. +-- Will skip any messages in between the request and the response -- @ --- sendRequest (Proxy :: Proxy DocumentSymbolRequest) --- TextDocumentDocumentSymbol --- (DocumentSymbolParams docId) +-- rsp <- request TextDocumentDocumentSymbol params :: Session DocumentSymbolsResponse -- @ +-- Note: will skip any messages in between the request and the response. +request :: (ToJSON params, FromJSON a) => ClientMethod -> params -> Session (ResponseMessage a) +request m = sendRequest m >=> skipManyTill anyMessage . responseForId + +-- | The same as 'sendRequest', but discard the response. +request_ :: ToJSON params => ClientMethod -> params -> Session () +request_ p = void . (request p :: ToJSON params => params -> Session (ResponseMessage Value)) + +-- | Sends a request to the server. Unlike 'request', this doesn't wait for the response. sendRequest - :: (ToJSON params) - => --Proxy (RequestMessage ClientMethod params resp) -- ^ A proxy to provide more type information about the request. - ClientMethod -- ^ The request method. + :: ToJSON params + => ClientMethod -- ^ The request method. -> params -- ^ The request parameters. -> Session LspId -- ^ The id of the request that was sent. sendRequest method params = do @@ -202,57 +302,138 @@ instance ToJSON a => ToJSON (RequestMessage' a) where 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 <$> ask - liftIO $ modifyMVar_ reqMap $ - \r -> return $ updateRequestMap r (req ^. LSP.id) (req ^. method) - - sendMessage req - -- | Sends a notification to the server. sendNotification :: ToJSON a => ClientMethod -- ^ The notification method. -> a -- ^ The notification parameters. -> Session () -sendNotification method params = - let notif = NotificationMessage "2.0" method params - in sendNotification' notif - -sendNotification' :: (ToJSON a, ToJSON b) => NotificationMessage a b -> Session () -sendNotification' = sendMessage +-- 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 + let (newVFS,_) = openVFS oldVFS n + modify (\s -> s { vfs = newVFS }) + sendMessage 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 + let (newVFS,_) = closeVFS oldVFS n + 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 <$> get + let (newVFS,_) = changeFromClientVFS oldVFS n + modify (\s -> s { vfs = newVFS }) + sendMessage n + +sendNotification method params = sendMessage (NotificationMessage "2.0" method params) + +-- | Sends a response to the server. sendResponse :: ToJSON a => ResponseMessage a -> Session () sendResponse = sendMessage -sendMessage :: ToJSON a => a -> Session () -sendMessage msg = do - h <- serverIn <$> 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. -getInitializeResponse :: Session InitializeResponse -getInitializeResponse = initRsp <$> ask >>= (liftIO . readMVar) - --- | Opens a text document and sends a notification to the client. +initializeResponse :: Session InitializeResponse +initializeResponse = initRsp <$> ask >>= (liftIO . readMVar) + +-- | /Creates/ a new text document. This is different from 'openDoc' +-- as it sends a workspace/didChangeWatchedFiles notification letting the server +-- know that a file was created within the workspace, __provided that the server +-- has registered for it__, and the file matches any patterns the server +-- registered for. +-- It /does not/ actually create a file on disk, but is useful for convincing +-- the server that one does exist. +-- +-- @since 11.0.0.0 +createDoc :: FilePath -- ^ The path to the document to open, __relative to the root directory__. + -> String -- ^ The text document's language identifier, e.g. @"haskell"@. + -> T.Text -- ^ The content of the text document to create. + -> Session TextDocumentIdentifier -- ^ The identifier of the document just created. +createDoc file languageId contents = do + dynCaps <- curDynCaps <$> get + rootDir <- asks rootDir + caps <- asks sessionCapabilities + absFile <- liftIO $ canonicalizePath (rootDir file) + let regs = filter (\r -> r ^. method == WorkspaceDidChangeWatchedFiles) $ + Map.elems dynCaps + watchHits :: FileSystemWatcher -> Bool + watchHits (FileSystemWatcher pattern kind) = + -- If WatchKind is exlcuded, defaults to all true as per spec + fileMatches pattern && createHits (fromMaybe (WatchKind True True True) kind) + + fileMatches pattern = Glob.match (Glob.compile pattern) relOrAbs + -- If the pattern is absolute then match against the absolute fp + where relOrAbs + | isAbsolute pattern = absFile + | otherwise = file + + createHits (WatchKind create _ _) = create + + regHits :: Registration -> Bool + regHits reg = isJust $ do + opts <- reg ^. registerOptions + fileWatchOpts <- case fromJSON opts :: Result DidChangeWatchedFilesRegistrationOptions of + Success x -> Just x + Error _ -> Nothing + if foldl' (\acc w -> acc || watchHits w) False (fileWatchOpts ^. watchers) + then Just () + else Nothing + + clientCapsSupports = + caps ^? workspace . _Just . didChangeWatchedFiles . _Just . dynamicRegistration . _Just + == Just True + shouldSend = clientCapsSupports && foldl' (\acc r -> acc || regHits r) False regs + + when shouldSend $ + sendNotification WorkspaceDidChangeWatchedFiles $ DidChangeWatchedFilesParams $ + List [ FileEvent (filePathToUri (rootDir file)) FcCreated ] + openDoc' file languageId contents + +-- | Opens a text document that /exists on disk/, and sends a +-- textDocument/didOpen notification to the server. 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 <- 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. +-- Use this is the file exists /outside/ of the current workspace. +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 textDocument/didOpen notification to the server. +closeDoc :: TextDocumentIdentifier -> Session () +closeDoc docId = do + let params = DidCloseTextDocumentParams (TextDocumentIdentifier (docId ^. uri)) + sendNotification TextDocumentDidClose params + +-- | Changes a text document and sends a textDocument/didOpen notification to the server. +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 @@ -260,3 +441,239 @@ getDocUri file = do 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 + +-- | The same as 'waitForDiagnostics', but will only match a specific +-- 'Language.Haskell.LSP.Types._source'. +waitForDiagnosticsSource :: String -> Session [Diagnostic] +waitForDiagnosticsSource src = do + diags <- waitForDiagnostics + let res = filter matches diags + if null res + then waitForDiagnosticsSource src + else return res + where + matches :: Diagnostic -> Bool + matches d = d ^. source == Just (T.pack src) + +-- | Expects a 'PublishDiagnosticsNotification' and throws an +-- 'UnexpectedDiagnostics' exception 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 (Either [DocumentSymbol] [SymbolInformation]) +getDocumentSymbols doc = do + ResponseMessage _ rspLid res <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc Nothing) :: Session DocumentSymbolsResponse + case res of + Right (DSDocumentSymbols (List xs)) -> return (Left xs) + Right (DSSymbolInformation (List xs)) -> return (Right xs) + Left err -> throw (UnexpectedResponseError rspLid err) + +-- | 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 Nothing) + + case rsp ^. result of + Right (List xs) -> return xs + Left error -> throw (UnexpectedResponseError (rsp ^. LSP.id) error) + +-- | Returns all the code actions in a document by +-- querying the code actions at each of the current +-- diagnostics' positions. +getAllCodeActions :: TextDocumentIdentifier -> Session [CAResult] +getAllCodeActions doc = do + ctx <- getCodeActionContext doc + + foldM (go ctx) [] =<< getCurrentDiagnostics doc + + where + go :: CodeActionContext -> [CAResult] -> Diagnostic -> Session [CAResult] + go ctx acc diag = do + ResponseMessage _ rspLid res <- request TextDocumentCodeAction (CodeActionParams doc (diag ^. range) ctx Nothing) + + case res of + Left e -> throw (UnexpectedResponseError rspLid e) + Right (List cmdOrCAs) -> pure (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 (toNormalizedUri $ doc ^. uri) . curDiagnostics <$> get + +-- | Executes a command. +executeCommand :: Command -> Session () +executeCommand cmd = do + let args = decode $ encode $ fromJust $ cmd ^. arguments + execParams = ExecuteCommandParams (cmd ^. command) args Nothing + request_ 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 <- vfsMap . vfs <$> get + let ver = + case fs Map.!? toNormalizedUri uri of + Just vf -> Just (virtualFileVersion vf) + _ -> 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 sessionCapabilities + + let supportsDocChanges = fromMaybe False $ do + let mWorkspace = C._workspace caps + C.WorkspaceClientCapabilities _ mEdit _ _ _ _ _ _ <- mWorkspace + C.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 <- request TextDocumentCompletion (TextDocumentPositionParams doc pos Nothing) + + case getResponseResult rsp of + Completions (List items) -> return items + CompletionList (CompletionListType _ (List items)) -> return items + +-- | Returns the references for the position in the document. +getReferences :: TextDocumentIdentifier -- ^ The document to lookup in. + -> Position -- ^ The position to lookup. + -> Bool -- ^ Whether to include declarations as references. + -> Session [Location] -- ^ The locations of the references. +getReferences doc pos inclDecl = + let ctx = ReferenceContext inclDecl + params = ReferenceParams doc pos ctx Nothing + in getResponseResult <$> request TextDocumentReferences params + +-- | Returns the definition(s) for the term at the specified position. +getDefinitions :: TextDocumentIdentifier -- ^ The document the term is in. + -> Position -- ^ The position the term is at. + -> Session [Location] -- ^ The location(s) of the definitions +getDefinitions doc pos = do + let params = TextDocumentPositionParams doc pos Nothing + rsp <- request TextDocumentDefinition params :: Session DefinitionResponse + case getResponseResult rsp of + SingleLoc loc -> pure [loc] + MultiLoc locs -> pure locs + +-- | Returns the type definition(s) for the term at the specified position. +getTypeDefinitions :: TextDocumentIdentifier -- ^ The document the term is in. + -> Position -- ^ The position the term is at. + -> Session [Location] -- ^ The location(s) of the definitions +getTypeDefinitions doc pos = + let params = TextDocumentPositionParams doc pos Nothing + in getResponseResult <$> request TextDocumentTypeDefinition params + +-- | Renames the term at the specified position. +rename :: TextDocumentIdentifier -> Position -> String -> Session () +rename doc pos newName = do + let params = RenameParams doc pos (T.pack newName) Nothing + rsp <- request TextDocumentRename params :: Session RenameResponse + let wEdit = getResponseResult rsp + req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit) + updateState (ReqApplyWorkspaceEdit req) + +-- | Returns the hover information at the specified position. +getHover :: TextDocumentIdentifier -> Position -> Session (Maybe Hover) +getHover doc pos = + let params = TextDocumentPositionParams doc pos Nothing + in getResponseResult <$> request TextDocumentHover params + +-- | Returns the highlighted occurences of the term at the specified position +getHighlights :: TextDocumentIdentifier -> Position -> Session [DocumentHighlight] +getHighlights doc pos = + let params = TextDocumentPositionParams doc pos Nothing + in getResponseResult <$> request TextDocumentDocumentHighlight params + +-- | Checks the response for errors and throws an exception if needed. +-- Returns the result if successful. +getResponseResult :: ResponseMessage a -> a +getResponseResult rsp = + case rsp ^. result of + Right x -> x + Left err -> throw $ UnexpectedResponseError (rsp ^. LSP.id) err + +-- | Applies formatting to the specified document. +formatDoc :: TextDocumentIdentifier -> FormattingOptions -> Session () +formatDoc doc opts = do + let params = DocumentFormattingParams doc opts Nothing + edits <- getResponseResult <$> request TextDocumentFormatting params + applyTextEdits doc edits + +-- | Applies formatting to the specified range in a document. +formatRange :: TextDocumentIdentifier -> FormattingOptions -> Range -> Session () +formatRange doc opts range = do + let params = DocumentRangeFormattingParams doc range opts Nothing + edits <- getResponseResult <$> request TextDocumentRangeFormatting params + applyTextEdits doc edits + +applyTextEdits :: TextDocumentIdentifier -> List TextEdit -> Session () +applyTextEdits doc edits = + let wEdit = WorkspaceEdit (Just (HashMap.singleton (doc ^. uri) edits)) Nothing + req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams wEdit) + in updateState (ReqApplyWorkspaceEdit req) + +-- | Returns the code lenses for the specified document. +getCodeLenses :: TextDocumentIdentifier -> Session [CodeLens] +getCodeLenses tId = do + rsp <- request TextDocumentCodeLens (CodeLensParams tId Nothing) :: Session CodeLensResponse + case getResponseResult rsp of + List res -> pure res + +-- | Returns a list of capabilities that the server has requested to /dynamically/ +-- register during the 'Session'. +-- +-- @since 0.11.0.0 +getRegisteredCapabilities :: Session [Registration] +getRegisteredCapabilities = (Map.elems . curDynCaps) <$> get \ No newline at end of file