Pretty print message trace

[lsp-test.git] / src / Language / Haskell / LSP / Test / Parsing.hs

diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs
index b5f5b6b4a740a3d17642cd185293f3877ad469a3..2936b31347f9db69ecf4b1a3951c552336953cfb 100644 (file)
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -1,63 +1,108 @@
-{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE OverloadedStrings #-}
 module Language.Haskell.LSP.Test.Parsing where
 
+import Control.Applicative
+import Control.Concurrent
+import Control.Lens
 import Control.Monad.IO.Class
-import Control.Monad.Trans.Reader
+import Control.Monad
+import Data.Aeson
+import Data.Aeson.Encode.Pretty
 import qualified Data.ByteString.Lazy.Char8 as B
+import Data.Conduit.Parser
+import Data.Maybe
+import qualified Data.Text as T
+import Data.Typeable
 import Language.Haskell.LSP.Messages
-import Language.Haskell.LSP.Types
+import Language.Haskell.LSP.Types as LSP hiding (error)
 import Language.Haskell.LSP.Test.Messages
-import Language.Haskell.LSP.Test.Decoding
-import System.IO
-import Control.Concurrent
-import Text.Parsec hiding (satisfy)
+import Language.Haskell.LSP.Test.Session
+import System.Console.ANSI
+
+satisfy :: (FromServerMessage -> Bool) -> Session FromServerMessage
+satisfy pred = do
+  
+  skipTimeout <- overridingTimeout <$> get
+  timeoutId <- curTimeoutId <$> get
+  unless skipTimeout $ do
+    chan <- asks messageChan
+    timeout <- asks (messageTimeout . config)
+    void $ liftIO $ forkIO $ do
+      threadDelay (timeout * 1000000)
+      writeChan chan (TimeoutMessage timeoutId)
+
+  x <- await
+
+  unless skipTimeout $
+    modify $ \s -> s { curTimeoutId = timeoutId + 1 }
 
-data MessageParserState = MessageParserState
+  modify $ \s -> s { lastReceivedMessage = Just x }
 
-data SessionContext = SessionContext
-  {
-    serverIn :: Handle,
-    rootDir :: FilePath,
-    messageChan :: Chan FromServerMessage,
-    requestMap :: MVar RequestMap
-  }
+  if pred x
+    then do
+      shouldLog <- asks $ logMessages . config
+      liftIO $ when shouldLog $ do
+        setSGR [SetColor Foreground Dull Magenta]
+        putStrLn $ "<-- " ++ B.unpack (encodeMsgPretty x)
+        setSGR [Reset]
+      return x
+    else empty
 
-newtype SessionState = SessionState
-  {
-    curReqId :: LspId
-  }
+-- | Matches a message of type 'a'.
+message :: forall a. (Typeable a, FromJSON a) => Session a
+message =
+  let parser = decode . encodeMsg :: FromServerMessage -> Maybe a
+  in named (T.pack $ show $ head $ snd $ splitTyConApp $ last $ typeRepArgs $ typeOf parser) $
+    castMsg <$> satisfy (isJust . parser)
 
-type Session = ParsecT (Chan FromServerMessage) SessionState (ReaderT SessionContext IO)
+-- | Matches if the message is a notification.
+anyNotification :: Session FromServerMessage
+anyNotification = named "Any notification" $ satisfy isServerNotification
 
-notification :: Session FromServerMessage
-notification = satisfy isServerNotification
+-- | Matches if the message is a request.
+anyRequest :: Session FromServerMessage
+anyRequest = named "Any request" $ satisfy isServerRequest
 
-request :: Session FromServerMessage
-request = satisfy isServerRequest
+-- | Matches if the message is a response.
+anyResponse :: Session FromServerMessage
+anyResponse = named "Any response" $ satisfy isServerResponse
 
-response :: Session FromServerMessage
-response = satisfy isServerResponse
+responseForId :: forall a. FromJSON a => LspId -> Session (ResponseMessage a)
+responseForId lid = named (T.pack $ "Response for id: " ++ show lid) $ do
+  let parser = decode . encodeMsg :: FromServerMessage -> Maybe (ResponseMessage a)
+  x <- satisfy (maybe False (\z -> z ^. LSP.id == responseId lid) . parser)
+  return $ castMsg x
 
+anyMessage :: Session FromServerMessage
+anyMessage = satisfy (const True)
+
+-- | A stupid method for getting out the inner message.
+castMsg :: FromJSON a => FromServerMessage -> a
+castMsg = fromMaybe (error "Failed casting a message") . decode . encodeMsg
+
+-- | A version of encode that encodes FromServerMessages as if they
+-- weren't wrapped.
+encodeMsg :: FromServerMessage -> B.ByteString
+encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
+
+encodeMsgPretty :: FromServerMessage -> B.ByteString
+encodeMsgPretty = encodePretty . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
+
+-- | Matches if the message is a log message notification or a show message notification/request.
 loggingNotification :: Session FromServerMessage
-loggingNotification = satisfy shouldSkip
+loggingNotification = named "Logging notification" $ satisfy shouldSkip
   where
     shouldSkip (NotLogMessage _) = True
     shouldSkip (NotShowMessage _) = True
     shouldSkip (ReqShowMessage _) = True
     shouldSkip _ = False
 
-satisfy :: (Stream s m a, Eq a, Show a) => (a -> Bool) -> ParsecT s u m a
-satisfy pred = tokenPrim show nextPos test
-  where nextPos x _ _ = x
-        test x = if pred x then Just x else Nothing
-
-testLog = NotLogMessage (NotificationMessage "2.0" WindowLogMessage (LogMessageParams MtLog "Hello world"))
-
-testSymbols = RspDocumentSymbols (ResponseMessage "2.0" (IdRspInt 0) (Just (List [])) Nothing)
-
-instance (MonadIO m) => Stream (Chan a) m a where
-  uncons c = do
-    x <- liftIO $ readChan c
-    return $ Just (x, c)
+publishDiagnosticsNotification :: Session PublishDiagnosticsNotification
+publishDiagnosticsNotification = named "Publish diagnostics notification" $ do
+  NotPublishDiagnostics diags <- satisfy test
+  return diags
+  where test (NotPublishDiagnostics _) = True
+        test _ = False