Compatibility with GHC 8.2.1

[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 53485f19c832ed0cdaab269fbc758aec16cbb1c8..49c24c9ae52715862a05baf0cfbe294ef04a6a82 100644 (file)
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -1,24 +1,27 @@
-{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
 {-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE RankNTypes #-}
 module Language.Haskell.LSP.Test.Parsing where
 
 import Control.Applicative
+import Control.Concurrent.Chan
+import Control.Concurrent.MVar
 import Control.Monad.Trans.Class
 import Control.Monad.IO.Class
 import Control.Monad.Trans.Reader
 import Control.Monad.Trans.State
+import Data.Aeson
+import qualified Data.ByteString.Lazy.Char8 as B
+import Data.Conduit hiding (await)
+import Data.Conduit.Parser
+import Data.Maybe
 import Language.Haskell.LSP.Messages
 import Language.Haskell.LSP.Types 
-import Language.Haskell.LSP.Test.Messages
+import Language.Haskell.LSP.Test.Compat
 import Language.Haskell.LSP.Test.Decoding
+import Language.Haskell.LSP.Test.Messages
 import System.IO
-import Control.Concurrent.Chan
-import Control.Concurrent.MVar
-import Data.Conduit hiding (await)
-import Data.Conduit.Parser
-
-data MessageParserState = MessageParserState
 
 data SessionContext = SessionContext
   {
@@ -34,6 +37,7 @@ newtype SessionState = SessionState
   }
 
 type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m))
+
 -- | A session representing one instance of launching and connecting to a server.
 -- 
 -- You can send and receive messages to the server within 'Session' via 'getMessage',
@@ -48,19 +52,42 @@ type ParserStateReader a s r m = ConduitParser a (StateT s (ReaderT r m))
 type Session = ParserStateReader FromServerMessage SessionState SessionContext IO
 
 -- | Matches if the message is a notification.
-notification :: Session FromServerMessage
-notification = satisfy isServerNotification
+anyNotification :: Monad m => ConduitParser FromServerMessage m FromServerMessage
+anyNotification = satisfy isServerNotification
+
+notification :: forall m a. (Monad m, FromJSON a) => ConduitParser FromServerMessage m (NotificationMessage ServerMethod a)
+notification = do
+  let parser = decode . encodeMsg :: FromServerMessage -> Maybe (NotificationMessage ServerMethod a)
+  x <- satisfy (isJust . parser)
+  return $ fromJust $ decode $ encodeMsg x
 
 -- | Matches if the message is a request.
-request :: Session FromServerMessage
-request = satisfy isServerRequest
+anyRequest :: Monad m => ConduitParser FromServerMessage m FromServerMessage
+anyRequest = satisfy isServerRequest
+
+request :: forall m a b. (Monad m, FromJSON a, FromJSON b) => ConduitParser FromServerMessage m (RequestMessage ServerMethod a b)
+request = do
+  let parser = decode . encodeMsg :: FromServerMessage -> Maybe (RequestMessage ServerMethod a b)
+  x <- satisfy (isJust . parser)
+  return $ fromJust $ decode $ encodeMsg x
 
 -- | Matches if the message is a response.
-response :: Session FromServerMessage
-response = satisfy isServerResponse
+anyResponse :: Monad m => ConduitParser FromServerMessage m FromServerMessage
+anyResponse = satisfy isServerResponse
+
+response :: forall m a. (Monad m, FromJSON a) => ConduitParser FromServerMessage m (ResponseMessage a)
+response = do
+  let parser = decode . encodeMsg :: FromServerMessage -> Maybe (ResponseMessage a)
+  x <- satisfy (isJust . parser)
+  return $ fromJust $ decode $ encodeMsg x
+
+-- | A version of encode that encodes FromServerMessages as if they
+-- weren't wrapped.
+encodeMsg :: FromServerMessage -> B.ByteString
+encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
 
 -- | Matches if the message is a log message notification or a show message notification/request.
-loggingNotification :: Session FromServerMessage
+loggingNotification :: Monad m => ConduitParser FromServerMessage m FromServerMessage
 loggingNotification = satisfy shouldSkip
   where
     shouldSkip (NotLogMessage _) = True
@@ -68,6 +95,13 @@ loggingNotification = satisfy shouldSkip
     shouldSkip (ReqShowMessage _) = True
     shouldSkip _ = False
 
+publishDiagnosticsNotification :: Monad m => ConduitParser FromServerMessage m PublishDiagnosticsNotification
+publishDiagnosticsNotification = do
+  NotPublishDiagnostics diags <- satisfy test
+  return diags
+  where test (NotPublishDiagnostics _) = True
+        test _ = False
+
 satisfy :: Monad m => (a -> Bool) -> ConduitParser a m a
 satisfy pred = do
   x <- await
@@ -75,12 +109,6 @@ satisfy pred = do
     then return x
     else empty
 
-chanSource:: MonadIO m => Chan o -> ConduitT i o m b
-chanSource c = do
-  x <- liftIO $ readChan c
-  yield x
-  chanSource c
-
 runSession' :: Chan FromServerMessage -> SessionContext -> SessionState -> Session a -> IO (a, SessionState)
 runSession' chan context state session = runReaderT (runStateT conduit state) context
   where conduit = runConduit $ chanSource chan .| runConduitParser session