X-Git-Url: https://git.lukelau.me/?a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest%2FParsing.hs;h=20a40d31386a284cf65d263981d0799f49b35ac0;hb=6f3106ce987b2a3794ee7ab444c8bcc204a7b3d2;hp=b5f5b6b4a740a3d17642cd185293f3877ad469a3;hpb=f1238f8db54eafbf0e3352140818875ad4cfd997;p=lsp-test.git

diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs
index b5f5b6b..20a40d3 100644
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -1,63 +1,173 @@
-{-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE FlexibleInstances #-}
-module Language.Haskell.LSP.Test.Parsing where
+{-# LANGUAGE TypeOperators #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE PolyKinds #-}
+{-# LANGUAGE KindSignatures #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE LambdaCase #-}
+{-# LANGUAGE RankNTypes #-}
+{-# LANGUAGE OverloadedStrings #-}
+
+module Language.Haskell.LSP.Test.Parsing
+  ( -- $receiving
+    satisfy
+  , satisfyMaybe
+  , message
+  , anyRequest
+  , anyResponse
+  , anyNotification
+  , anyMessage
+  , loggingNotification
+  , publishDiagnosticsNotification
+  , responseForId
+  ) 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 qualified Data.ByteString.Lazy.Char8 as B
-import Language.Haskell.LSP.Messages
+import Data.Conduit.Parser hiding (named)
+import qualified Data.Conduit.Parser (named)
+import qualified Data.Text as T
+import Data.Typeable
 import Language.Haskell.LSP.Types
-import Language.Haskell.LSP.Test.Messages
-import Language.Haskell.LSP.Test.Decoding
-import System.IO
-import Control.Concurrent
-import Text.Parsec hiding (satisfy)
+import qualified Language.Haskell.LSP.Types.Lens as LSP
+import Language.Haskell.LSP.Test.Session
+import Data.GADT.Compare
+import Data.Type.Equality
 
-data MessageParserState = MessageParserState
+-- $receiving
+-- To receive a message, just specify the type that expect:
+--
+-- @
+-- msg1 <- message :: Session ApplyWorkspaceEditRequest
+-- msg2 <- message :: Session HoverResponse
+-- @
+--
+-- '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 :: Session DefinitionRequest)
+-- >          <|> (message :: Session ReferencesRequest)
+--
+-- If you wanted to match any number of telemetry
+-- notifications immediately followed by a response:
+--
+-- @
+-- logThenDiags =
+--  skipManyTill (message :: Session TelemetryNotification)
+--               anyResponse
+-- @
 
-data SessionContext = SessionContext
-  {
-    serverIn :: Handle,
-    rootDir :: FilePath,
-    messageChan :: Chan FromServerMessage,
-    requestMap :: MVar RequestMap
-  }
+-- | 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)
 
-newtype SessionState = SessionState
-  {
-    curReqId :: LspId
-  }
+-- | 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 = do
 
-type Session = ParsecT (Chan FromServerMessage) SessionState (ReaderT SessionContext IO)
+  skipTimeout <- overridingTimeout <$> get
+  timeoutId <- getCurTimeoutId
+  unless skipTimeout $ do
+    chan <- asks messageChan
+    timeout <- asks (messageTimeout . config)
+    void $ liftIO $ forkIO $ do
+      threadDelay (timeout * 1000000)
+      writeChan chan (TimeoutMessage timeoutId)
 
-notification :: Session FromServerMessage
-notification = satisfy isServerNotification
+  x <- Session await
 
-request :: Session FromServerMessage
-request = satisfy isServerRequest
+  unless skipTimeout (bumpTimeoutId timeoutId)
 
-response :: Session FromServerMessage
-response = satisfy isServerResponse
+  modify $ \s -> s { lastReceivedMessage = Just x }
 
-loggingNotification :: Session FromServerMessage
-loggingNotification = satisfy shouldSkip
-  where
-    shouldSkip (NotLogMessage _) = True
-    shouldSkip (NotShowMessage _) = True
-    shouldSkip (ReqShowMessage _) = True
-    shouldSkip _ = False
+  case pred x of
+    Just a -> do
+      logMsg LogServer x
+      return a
+    Nothing -> empty
+
+named :: T.Text -> Session a -> Session a
+named s (Session x) = Session (Data.Conduit.Parser.named s x)
 
-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
+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
 
-testLog = NotLogMessage (NotificationMessage "2.0" WindowLogMessage (LogMessageParams MtLog "Hello world"))
+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
 
-testSymbols = RspDocumentSymbols (ResponseMessage "2.0" (IdRspInt 0) (Just (List [])) Nothing)
+-- | Matches if the message is a notification.
+anyNotification :: Session FromServerMessage
+anyNotification = named "Any notification" $ satisfy $ \case
+  FromServerMess m _ -> case splitServerMethod m of
+    IsServerNot -> True
+    _ -> 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
+
+-- | Matches a response for a specific id.
+responseForId :: LspId (m :: Method FromClient Request) -> Session (ResponseMessage m)
+responseForId lid = named (T.pack $ "Response for id: " ++ show lid) $ do
+  satisfyMaybe $ \msg -> do
+    case msg of
+      FromServerMess _ _ -> Nothing
+      FromServerRsp m rsp -> undefined -- TODO
+
+-- | 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 :: Session FromServerMessage
+loggingNotification = named "Logging notification" $ satisfy shouldSkip
+  where
+    shouldSkip (FromServerMess SWindowLogMessage _) = True
+    shouldSkip (FromServerMess SWindowShowMessage _) = True
+    shouldSkip (FromServerMess SWindowShowMessageRequest _) = True
+    shouldSkip _ = False
 
-instance (MonadIO m) => Stream (Chan a) m a where
-  uncons c = do
-    x <- liftIO $ readChan c
-    return $ Just (x, c)
+-- | 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