{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE EmptyCase #-}
+{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE PolyKinds #-}
+{-# LANGUAGE KindSignatures #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE OverloadedStrings #-}
-module Language.Haskell.LSP.Test.Parsing where
+
+module Language.Haskell.LSP.Test.Parsing
+ ( -- $receiving
+ satisfy
+ , satisfyMaybe
+ , message
+ , responseForId
+ , customRequest
+ , customNotification
+ , anyRequest
+ , anyResponse
+ , anyNotification
+ , anyMessage
+ , loggingNotification
+ , publishDiagnosticsNotification
+ ) where
import Control.Applicative
import Control.Concurrent
+import Control.Lens
import Control.Monad.IO.Class
-import Control.Monad.Trans.Class
-import Data.Aeson
-import qualified Data.ByteString.Lazy.Char8 as B
-import Data.Conduit.Parser
-import Data.Maybe
-import Language.Haskell.LSP.Messages
-import Language.Haskell.LSP.Types hiding (error)
-import Language.Haskell.LSP.Test.Exceptions
-import Language.Haskell.LSP.Test.Messages
+import Control.Monad
+import Data.Conduit.Parser hiding (named)
+import qualified Data.Conduit.Parser (named)
+import Data.GADT.Compare
+import qualified Data.Text as T
+import Data.Typeable
+import Language.Haskell.LSP.Types
import Language.Haskell.LSP.Test.Session
-import System.Console.ANSI
-satisfy :: (MonadIO m, MonadSessionConfig m) => (FromServerMessage -> Bool) -> ConduitParser FromServerMessage m FromServerMessage
-satisfy pred = do
- timeout <- timeout <$> lift sessionConfig
- tId <- liftIO myThreadId
- timeoutThread <- liftIO $ forkIO $ do
+-- $receiving
+-- To receive a message, specify the method of the message to expect:
+--
+-- @
+-- msg1 <- message SWorkspaceApplyEdit
+-- msg2 <- message STextDocumentHover
+-- @
+--
+-- 'Language.Haskell.LSP.Test.Session' is actually just a parser
+-- that operates on messages under the hood. This means that you
+-- can create and combine parsers to match speicifc sequences of
+-- messages that you expect.
+--
+-- For example, if you wanted to match either a definition or
+-- references request:
+--
+-- > defOrImpl = message STextDocumentDefinition
+-- > <|> message STextDocumentReferences
+--
+-- If you wanted to match any number of telemetry
+-- notifications immediately followed by a response:
+--
+-- @
+-- logThenDiags =
+-- skipManyTill (message STelemetryEvent)
+-- anyResponse
+-- @
+
+-- | Consumes and returns the next message, if it satisfies the specified predicate.
+--
+-- @since 0.5.2.0
+satisfy :: (FromServerMessage -> Bool) -> Session FromServerMessage
+satisfy pred = satisfyMaybe (\msg -> if pred msg then Just msg else Nothing)
+
+-- | Consumes and returns the result of the specified predicate if it returns `Just`.
+--
+-- @since 0.6.1.0
+satisfyMaybe :: (FromServerMessage -> Maybe a) -> Session a
+satisfyMaybe pred = satisfyMaybeM (pure . pred)
+
+satisfyMaybeM :: (FromServerMessage -> Session (Maybe a)) -> Session a
+satisfyMaybeM pred = do
+
+ skipTimeout <- overridingTimeout <$> get
+ timeoutId <- getCurTimeoutId
+ unless skipTimeout $ do
+ chan <- asks messageChan
+ timeout <- asks (messageTimeout . config)
+ void $ liftIO $ forkIO $ do
threadDelay (timeout * 1000000)
- throwTo tId TimeoutException
- x <- await
- liftIO $ killThread timeoutThread
+ writeChan chan (TimeoutMessage timeoutId)
- liftIO $ do
- setSGR [SetColor Foreground Vivid Magenta]
- putStrLn $ "<-- " ++ B.unpack (encodeMsg x)
- setSGR [Reset]
+ x <- Session await
- if pred x
- then return x
- else empty
+ unless skipTimeout (bumpTimeoutId timeoutId)
--- | Matches if the message is a notification.
-anyNotification :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyNotification = named "Any notification" $ satisfy isServerNotification
+ modify $ \s -> s { lastReceivedMessage = Just x }
-notification :: forall m a. (MonadIO m, MonadSessionConfig m, FromJSON a) => ConduitParser FromServerMessage m (NotificationMessage ServerMethod a)
-notification = named "Notification" $ do
- let parser = decode . encodeMsg :: FromServerMessage -> Maybe (NotificationMessage ServerMethod a)
- x <- satisfy (isJust . parser)
- return $ castMsg x
+ res <- pred x
--- | Matches if the message is a request.
-anyRequest :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyRequest = named "Any request" $ satisfy isServerRequest
+ case res of
+ Just a -> do
+ logMsg LogServer x
+ return a
+ Nothing -> empty
-request :: forall m a b. (MonadIO m, MonadSessionConfig m, FromJSON a, FromJSON b) => ConduitParser FromServerMessage m (RequestMessage ServerMethod a b)
-request = named "Request" $ do
- let parser = decode . encodeMsg :: FromServerMessage -> Maybe (RequestMessage ServerMethod a b)
- x <- satisfy (isJust . parser)
- return $ castMsg x
+named :: T.Text -> Session a -> Session a
+named s (Session x) = Session (Data.Conduit.Parser.named s x)
--- | Matches if the message is a response.
-anyResponse :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyResponse = named "Any response" $ satisfy isServerResponse
+mEq :: SServerMethod m1 -> SServerMethod m2 -> Maybe (m1 :~~: m2)
+mEq m1 m2 = case (splitServerMethod m1, splitServerMethod m2) of
+ (IsServerNot, IsServerNot) -> do
+ Refl <- geq m1 m2
+ pure HRefl
+ (IsServerReq, IsServerReq) -> do
+ Refl <- geq m1 m2
+ pure HRefl
+ _ -> Nothing
+
+mEqClient :: SClientMethod m1 -> SClientMethod m2 -> Maybe (m1 :~~: m2)
+mEqClient m1 m2 = case (splitClientMethod m1, splitClientMethod m2) of
+ (IsClientNot, IsClientNot) -> do
+ Refl <- geq m1 m2
+ pure HRefl
+ (IsClientReq, IsClientReq) -> do
+ Refl <- geq m1 m2
+ pure HRefl
+ _ -> Nothing
-response :: forall m a. (MonadIO m, MonadSessionConfig m, FromJSON a) => ConduitParser FromServerMessage m (ResponseMessage a)
-response = named "Response" $ do
- let parser = decode . encodeMsg :: FromServerMessage -> Maybe (ResponseMessage a)
- x <- satisfy (isJust . parser)
- return $ castMsg x
+-- | Matches non-custom messages
+message :: SServerMethod m -> Session (ServerMessage m)
+message m1 = named (T.pack $ show m1) $ satisfyMaybe $ \case
+ FromServerMess m2 msg -> do
+ HRefl <- mEq m1 m2
+ pure msg
+ _ -> Nothing
+
+customRequest :: T.Text -> Session (ServerMessage (CustomMethod :: Method FromServer Request))
+customRequest m = named m $ satisfyMaybe $ \case
+ FromServerMess m1 msg -> case splitServerMethod m1 of
+ IsServerEither -> case msg of
+ ReqMess _ | m1 == SCustomMethod m -> Just msg
+ _ -> Nothing
+ _ -> Nothing
+ _ -> Nothing
+
+customNotification :: T.Text -> Session (ServerMessage (CustomMethod :: Method FromServer Notification))
+customNotification m = named m $ satisfyMaybe $ \case
+ FromServerMess m1 msg -> case splitServerMethod m1 of
+ IsServerEither -> case msg of
+ NotMess _ | m1 == SCustomMethod m -> Just msg
+ _ -> Nothing
+ _ -> Nothing
+ _ -> Nothing
+
+-- | Matches if the message is a notification.
+anyNotification :: Session FromServerMessage
+anyNotification = named "Any notification" $ satisfy $ \case
+ FromServerMess m msg -> case splitServerMethod m of
+ IsServerNot -> True
+ IsServerEither -> case msg of
+ NotMess _ -> True
+ _ -> False
+ _ -> False
+ FromServerRsp _ _ -> False
+
+-- | Matches if the message is a request.
+anyRequest :: Session FromServerMessage
+anyRequest = named "Any request" $ satisfy $ \case
+ FromServerMess m _ -> case splitServerMethod m of
+ IsServerReq -> True
+ _ -> False
+ FromServerRsp _ _ -> False
+
+-- | Matches if the message is a response.
+anyResponse :: Session FromServerMessage
+anyResponse = named "Any response" $ satisfy $ \case
+ FromServerMess _ _ -> False
+ FromServerRsp _ _ -> True
--- | A stupid method for getting out the inner message.
-castMsg :: FromJSON a => FromServerMessage -> a
-castMsg = fromMaybe (error "Failed casting a message") . decode . encodeMsg
+-- | Matches a response for a specific id.
+responseForId :: SMethod (m :: Method FromClient Request) -> LspId m -> Session (ResponseMessage m)
+responseForId m lid = named (T.pack $ "Response for id: " ++ show lid) $ do
+ satisfyMaybe $ \msg -> do
+ case msg of
+ FromServerMess _ _ -> Nothing
+ FromServerRsp m' rspMsg@(ResponseMessage _ lid' _) ->
+ case mEqClient m m' of
+ Just HRefl -> do
+ guard (lid' == Just lid)
+ pure rspMsg
+ Nothing
+ | SCustomMethod tm <- m
+ , SCustomMethod tm' <- m'
+ , tm == tm'
+ , lid' == Just lid -> pure rspMsg
+ _ -> empty
--- | A version of encode that encodes FromServerMessages as if they
--- weren't wrapped.
-encodeMsg :: FromServerMessage -> B.ByteString
-encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
+-- | Matches any type of message.
+anyMessage :: Session FromServerMessage
+anyMessage = satisfy (const True)
-- | Matches if the message is a log message notification or a show message notification/request.
-loggingNotification :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
+loggingNotification :: Session FromServerMessage
loggingNotification = named "Logging notification" $ satisfy shouldSkip
where
- shouldSkip (NotLogMessage _) = True
- shouldSkip (NotShowMessage _) = True
- shouldSkip (ReqShowMessage _) = True
+ shouldSkip (FromServerMess SWindowLogMessage _) = True
+ shouldSkip (FromServerMess SWindowShowMessage _) = True
+ shouldSkip (FromServerMess SWindowShowMessageRequest _) = True
shouldSkip _ = False
-publishDiagnosticsNotification :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m PublishDiagnosticsNotification
-publishDiagnosticsNotification = named "Publish diagnostics notification" $ do
- NotPublishDiagnostics diags <- satisfy test
- return diags
- where test (NotPublishDiagnostics _) = True
- test _ = False
\ No newline at end of file
+-- | Matches a 'Language.Haskell.LSP.Test.PublishDiagnosticsNotification'
+-- (textDocument/publishDiagnostics) notification.
+publishDiagnosticsNotification :: Session PublishDiagnosticsNotification
+publishDiagnosticsNotification = named "Publish diagnostics notification" $
+ satisfyMaybe $ \msg -> case msg of
+ FromServerMess STextDocumentPublishDiagnostics diags -> Just diags
+ _ -> Nothing
projects / lsp-test.git / blobdiff