{-# 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 <https://github.com/Microsoft/language-server-protocol Language Server Protocol servers> 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 : POSIX
+
+Provides the framework to start functionally testing
+<https://github.com/Microsoft/language-server-protocol Language Server Protocol servers>.
+You should import "Language.Haskell.LSP.Types" alongside this.
+-}
module Language.Haskell.LSP.Test
(
-- * Sessions
- runSession
- , runSessionWithHandles
- , 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
, openDoc
- , getDocItem
+ , openDoc'
+ , 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
) where
-import Control.Applicative
import Control.Applicative.Combinators
+import Control.Concurrent
import Control.Monad
import Control.Monad.IO.Class
-import Control.Concurrent
+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.Foldable
import qualified Data.HashMap.Strict as HashMap
-import Data.List
+import qualified Data.Map as Map
+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.IO
import System.Directory
import System.FilePath
+import qualified Data.Rope.UTF16 as Rope
-- | 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 serverExe rootDir session = do
- pid <- getProcessID
+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 a
+runSessionWithConfig config serverExe caps rootDir session = do
+ pid <- getCurrentProcessID
absRootDir <- canonicalizePath rootDir
let initializeParams = InitializeParams (Just pid)
(Just $ T.pack absRootDir)
(Just $ filePathToUri absRootDir)
Nothing
- def
+ caps
(Just TraceOff)
-
- withServer serverExe $ \serverIn serverOut _ -> runSessionWithHandles serverIn serverOut listenServer 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 <- request 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
+ case lspConfig config of
+ Just cfg -> sendNotification WorkspaceDidChangeConfiguration (DidChangeConfigurationParams cfg)
+ Nothing -> return ()
+
-- Run the actual test
result <- session
-
- sendNotification Exit ExitParams
-
return result
+ 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, makes sure it matches the record and
--- signals any semaphores
-listenServer :: Handle -> Session ()
-listenServer serverOut = do
- msgBytes <- liftIO $ getNextMessage serverOut
+ -- | 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
- context <- ask
- reqMap <- liftIO $ readMVar $ requestMap context
+ reqMap <- readMVar $ requestMap context
let msg = decodeFromServerMsg reqMap msgBytes
- processTextChanges msg
- liftIO $ writeChan (messageChan context) msg
-
- listenServer serverOut
-
-processTextChanges :: FromServerMessage -> Session ()
-processTextChanges (ReqApplyWorkspaceEdit r) = do
- List changeParams <- case r ^. params . edit . documentChanges of
- Just cs -> mapM applyTextDocumentEdit cs
- Nothing -> case r ^. params . edit . changes of
- Just cs -> mapM (uncurry applyTextEdit) (List (HashMap.toList cs))
- Nothing -> return (List [])
-
- let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) changeParams
- mergedParams = map mergeParams groupedParams
-
- forM_ mergedParams (sendNotification TextDocumentDidChange)
-
- where applyTextDocumentEdit (TextDocumentEdit docId (List edits)) = do
- oldVFS <- vfs <$> get
- let changeEvents = map (\e -> TextDocumentContentChangeEvent (Just (e ^. range)) Nothing (e ^. newText)) edits
- params = DidChangeTextDocumentParams docId (List changeEvents)
- newVFS <- liftIO $ changeVFS oldVFS (fmClientDidChangeTextDocumentNotification params)
- modify (\s -> s { vfs = newVFS })
- liftIO $ print newVFS
- return params
-
- applyTextEdit uri edits = applyTextDocumentEdit (TextDocumentEdit (VersionedTextDocumentIdentifier uri 0) edits)
-
- mergeParams :: [DidChangeTextDocumentParams] -> DidChangeTextDocumentParams
- mergeParams params = let events = concat (toList (map (toList . (^. contentChanges)) params))
- in DidChangeTextDocumentParams (head params ^. textDocument) (List events)
-processTextChanges _ = return ()
-
--- | Sends a request to the server.
---
+ writeChan (messageChan context) (ServerMessage msg)
+
+ case msg of
+ (RspShutdown _) -> return ()
+ _ -> 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.! toNormalizedUri (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.
+-- 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
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
+ newVFS <- liftIO $ 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
+ newVFS <- liftIO $ 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
+ 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.
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 <$> ask >>= (liftIO . readMVar)
+initializeResponse :: Session InitializeResponse
+initializeResponse = initRsp <$> 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
-
--- | 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 ()
+closeDoc docId = do
+ let params = DidCloseTextDocumentParams (TextDocumentIdentifier (docId ^. uri))
+ sendNotification TextDocumentDidClose params
+
+-- | 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
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 mRes mErr <- request TextDocumentDocumentSymbol (DocumentSymbolParams doc) :: Session DocumentSymbolsResponse
+ maybe (return ()) (throw . UnexpectedResponseError rspLid) mErr
+ 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 [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 mRes mErr <- request 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)
+
+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
+ 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 <- vfs <$> get
+ let ver =
+ case fs Map.!? toNormalizedUri 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 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)
+
+ 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
+ in getResponseResult <$> request TextDocumentReferences params
+
+-- | Returns the definition(s) for the term at the specified position.
+getDefinitions :: TextDocumentIdentifier -- ^ The document the term is in.
+ -> Position -- ^ The position the term is at.
+ -> Session [Location] -- ^ The location(s) of the definitions
+getDefinitions doc pos = do
+ let params = TextDocumentPositionParams doc pos
+ rsp <- request TextDocumentDefinition params :: Session DefinitionResponse
+ case getResponseResult rsp of
+ SingleLoc loc -> pure [loc]
+ MultiLoc locs -> pure locs
+
+-- | Returns the type definition(s) for the term at the specified position.
+getTypeDefinitions :: TextDocumentIdentifier -- ^ The document the term is in.
+ -> Position -- ^ The position the term is at.
+ -> Session [Location] -- ^ The location(s) of the definitions
+getTypeDefinitions doc pos =
+ let params = TextDocumentPositionParams doc pos
+ in getResponseResult <$> 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)
+ 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
+ in getResponseResult <$> request TextDocumentHover params
+
+-- | Returns the highlighted occurences of the term at the specified position
+getHighlights :: TextDocumentIdentifier -> Position -> Session [DocumentHighlight]
+getHighlights doc pos =
+ let params = TextDocumentPositionParams doc pos
+ in getResponseResult <$> 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 = fromMaybe exc (rsp ^. result)
+ where exc = throw $ UnexpectedResponseError (rsp ^. LSP.id)
+ (fromJust $ rsp ^. LSP.error)
+
+-- | Applies formatting to the specified document.
+formatDoc :: TextDocumentIdentifier -> FormattingOptions -> Session ()
+formatDoc doc opts = do
+ let params = DocumentFormattingParams doc opts
+ edits <- getResponseResult <$> request TextDocumentFormatting params
+ applyTextEdits doc edits
+
+-- | Applies formatting to the specified range in a document.
+formatRange :: TextDocumentIdentifier -> FormattingOptions -> Range -> Session ()
+formatRange doc opts range = do
+ let params = DocumentRangeFormattingParams doc range opts
+ edits <- getResponseResult <$> 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) :: Session CodeLensResponse
+ case getResponseResult rsp of
+ List res -> pure res
projects / lsp-test.git / blobdiff