X-Git-Url: https://git.lukelau.me/?a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest%2FParsing.hs;h=20a40d31386a284cf65d263981d0799f49b35ac0;hb=6f3106ce987b2a3794ee7ab444c8bcc204a7b3d2;hp=9e6bdd5c5739f07b9b8590598fe2a1c08cfcae86;hpb=0f8b9d328f4d950ff0a2e1c3b5aed593b21c2d3a;p=lsp-test.git

diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs
index 9e6bdd5..20a40d3 100644
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -1,86 +1,173 @@
 {-# LANGUAGE MultiParamTypeClasses #-}
-{-# LANGUAGE FlexibleInstances #-}
+{-# LANGUAGE TypeOperators #-}
 {-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE PolyKinds #-}
+{-# LANGUAGE KindSignatures #-}
+{-# LANGUAGE DataKinds #-}
+{-# LANGUAGE GADTs #-}
+{-# LANGUAGE LambdaCase #-}
 {-# LANGUAGE RankNTypes #-}
-module Language.Haskell.LSP.Test.Parsing where
+{-# 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.Class
+import Control.Monad
 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 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 qualified Language.Haskell.LSP.Types.Lens as LSP
 import Language.Haskell.LSP.Test.Session
+import Data.GADT.Compare
+import Data.Type.Equality
+
+-- $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
+-- @
+
+-- | 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 = do
 
-satisfy :: (MonadIO m, MonadSessionConfig m) => (a -> Bool) -> ConduitParser a m a
-satisfy pred = do
-  timeout <- timeout <$> lift sessionConfig
-  tId <- liftIO myThreadId
-  liftIO $ forkIO $ 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
-  if pred x
-    then return x
-    else empty
+      writeChan chan (TimeoutMessage timeoutId)
 
--- | Matches if the message is a notification.
-anyNotification :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyNotification = satisfy isServerNotification
+  x <- Session await
 
-notification :: forall m a. (MonadIO m, MonadSessionConfig 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 $ decodeMsg $ encodeMsg x
+  unless skipTimeout (bumpTimeoutId timeoutId)
 
--- | Matches if the message is a request.
-anyRequest :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyRequest = satisfy isServerRequest
+  modify $ \s -> s { lastReceivedMessage = Just x }
 
-request :: forall m a b. (MonadIO m, MonadSessionConfig 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 $ decodeMsg $ encodeMsg x
+  case pred x of
+    Just a -> do
+      logMsg LogServer x
+      return a
+    Nothing -> empty
 
--- | Matches if the message is a response.
-anyResponse :: (MonadIO m, MonadSessionConfig m) => ConduitParser FromServerMessage m FromServerMessage
-anyResponse = satisfy isServerResponse
+named :: T.Text -> Session a -> Session a
+named s (Session x) = Session (Data.Conduit.Parser.named s x)
 
-response :: forall m a. (MonadIO m, MonadSessionConfig m, FromJSON a) => ConduitParser FromServerMessage m (ResponseMessage a)
-response = do
-  let parser = decode . encodeMsg :: FromServerMessage -> Maybe (ResponseMessage a)
-  x <- satisfy (isJust . parser)
-  return $ decodeMsg $ encodeMsg x
+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
+
+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
+
+-- | 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
 
--- | A version of encode that encodes FromServerMessages as if they
--- weren't wrapped.
-encodeMsg :: FromServerMessage -> B.ByteString
-encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
+-- | 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
 
-decodeMsg :: FromJSON a => B.ByteString -> a
-decodeMsg x = fromMaybe (error $ "Unexpected message type\nGot:\n " ++ show x)
-                  (decode x)
+-- | 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 = satisfy shouldSkip
+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 = 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