-- * Sessions
runSession
, runSessionWithHandles
- , runSessionWithCapabilities
+ , runSessionWithConfig
, Session
+ , SessionConfig(..)
+ , MonadSessionConfig(..)
+ , SessionException(..)
+ , anySessionException
-- * Sending
, sendRequest
- , sendNotification
+ , sendRequest_
, sendRequest'
+ , sendNotification
+ , sendRequestMessage
, sendNotification'
, sendResponse
-- * Receving
, response
, anyNotification
, notification
+ , anyMessage
, loggingNotification
, publishDiagnosticsNotification
-- * Combinators
, (<|>)
, satisfy
-- * Utilities
- , getInitializeResponse
+ , initializeResponse
+ -- ** Documents
, openDoc
- , getDocItem
, documentContents
+ , getDocumentEdit
, getDocUri
+ -- ** Symbols
+ , getDocumentSymbols
+ -- ** Diagnostics
+ , waitForDiagnostics
+ , noDiagnostics
+ -- ** Commands
+ , executeCommand
+ -- ** Code Actions
+ , getAllCodeActions
+ , executeCodeAction
) where
import Control.Applicative
import Control.Applicative.Combinators
-import Control.Monad.IO.Class
import Control.Concurrent
+import Control.Monad
+import Control.Monad.IO.Class
+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 qualified Data.HashMap.Strict as HashMap
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.TH.ClientCapabilities
+import Language.Haskell.LSP.Types hiding (id, capabilities, error)
+import qualified Language.Haskell.LSP.Types 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
-> FilePath -- ^ The filepath to the root directory for the session.
-> Session a -- ^ The session to run.
-> IO a
-runSession = runSessionWithCapabilities def
+runSession = runSessionWithConfig def
-- | Starts a new sesion with a client with the specified capabilities.
-runSessionWithCapabilities :: ClientCapabilities -- ^ The capabilities the client should have.
+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 a
-runSessionWithCapabilities caps serverExe rootDir session = do
- pid <- getProcessID
+runSessionWithConfig config serverExe rootDir session = do
+ pid <- getCurrentProcessID
absRootDir <- canonicalizePath rootDir
let initializeParams = InitializeParams (Just pid)
(Just $ T.pack absRootDir)
(Just $ filePathToUri absRootDir)
Nothing
- caps
+ (capabilities config)
(Just TraceOff)
-
- withServer serverExe $ \serverIn serverOut _ -> runSessionWithHandles serverIn serverOut 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 Initialize initializeParams
- initRspMsg <- response :: Session InitializeResponse
+ initRspMsg <- sendRequest Initialize initializeParams :: Session InitializeResponse
liftIO $ maybe (return ()) (putStrLn . ("Error while initializing: " ++) . show ) (initRspMsg ^. LSP.error)
let file = vfs Map.! (doc ^. uri)
return $ Rope.toText $ Language.Haskell.LSP.VFS._text file
--- | Sends a request to the server.
---
+-- | 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 <- request :: Session ApplyWorkspaceEditRequest
+
+ unless (checkDocumentChanges req || checkChanges req) $
+ liftIO $ throw (IncorrectApplyEditRequestException (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
- :: (ToJSON params)
- => --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 }
object ["jsonrpc" .= rpc, "id" .= id, "method" .= method, "params" .= params]
-sendRequest' :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
-sendRequest' req = do
+sendRequestMessage :: (ToJSON a, ToJSON b) => RequestMessage ClientMethod a b -> Session ()
+sendRequestMessage req = do
-- Update the request map
reqMap <- requestMap <$> ask
liftIO $ modifyMVar_ reqMap $
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 ()
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
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.
let fp = rootDir context </> file
return $ filePathToUri fp
+waitForDiagnostics :: Session [Diagnostic]
+waitForDiagnostics = do
+ diagsNot <- skipManyTill anyMessage notification :: 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 <- notification :: Session PublishDiagnosticsNotification
+ when (diagsNot ^. params . LSP.diagnostics /= List []) $ liftIO $ throw UnexpectedDiagnosticsException
+
+-- | 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
+
+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)
+
+executeCommand :: Command -> Session ()
+executeCommand cmd = do
+ let args = decode $ encode $ fromJust $ cmd ^. arguments
+ execParams = ExecuteCommandParams (cmd ^. command) args
+ sendRequest_ WorkspaceExecuteCommand execParams
+
+executeCodeAction :: CodeAction -> Session ()
+executeCodeAction action = do
+ maybe (return ()) handleEdit $ action ^. edit
+ maybe (return ()) executeCommand $ action ^. command
+
+ where handleEdit :: WorkspaceEdit -> Session ()
+ handleEdit e =
+ let req = RequestMessage "" (IdInt 0) WorkspaceApplyEdit (ApplyWorkspaceEditParams e)
+ in processMessage (ReqApplyWorkspaceEdit req)
\ No newline at end of file