X-Git-Url: http://git.lukelau.me/?a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest%2FParsing.hs;h=128cfb4018a4e9ce40bbabe86a86ac66f4edae22;hb=d1855cd1182c51333c82bf964fc96c8ec3ec76b7;hp=de2ca860e65622c014ee0a85a8ecae9e8c2a1185;hpb=208679fa3a42e2a81bc778218bab6376bd6f42d1;p=lsp-test.git

diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs
index de2ca86..128cfb4 100644
--- a/src/Language/Haskell/LSP/Test/Parsing.hs
+++ b/src/Language/Haskell/LSP/Test/Parsing.hs
@@ -1,32 +1,142 @@
+{-# LANGUAGE MultiParamTypeClasses #-}
+{-# LANGUAGE ScopedTypeVariables #-}
+{-# LANGUAGE RankNTypes #-}
 {-# LANGUAGE OverloadedStrings #-}
-module Language.Haskell.LSP.Test.Parsing where
 
+module Language.Haskell.LSP.Test.Parsing
+  ( -- $receiving
+    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
+import Data.Aeson
+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, message)
 import Language.Haskell.LSP.Test.Messages
-import Text.Parsec hiding (satisfy)
+import Language.Haskell.LSP.Test.Session
+
+-- $receiving
+-- To receive a message, just specify the type that expect:
+-- 
+-- @
+-- msg1 <- message :: Session ApplyWorkspaceEditRequest
+-- msg2 <- message :: Session HoverResponse
+-- @
+--
+-- 'Language.Haskell.LSP.Test.Session' is actually just a parser
+-- that operates on messages under the hood. This means that you
+-- can create and combine parsers to match speicifc sequences of
+-- messages that you expect.
+--
+-- For example, if you wanted to match either a definition or
+-- references request:
+-- 
+-- > defOrImpl = (message :: Session DefinitionRequest)
+-- >          <|> (message :: Session ReferencesRequest)
+--
+-- If you wanted to match any number of telemetry
+-- notifications immediately followed by a response:
+-- 
+-- @
+-- logThenDiags =
+--  skipManyTill (message :: Session TelemetryNotification)
+--               anyResponse 
+-- @
+
+satisfy :: (FromServerMessage -> Bool) -> Session FromServerMessage
+satisfy pred = do
+  
+  skipTimeout <- overridingTimeout <$> 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 }
+
+  modify $ \s -> s { lastReceivedMessage = Just x }
+
+  if pred x
+    then do
+      logMsg LogServer x
+      return x
+    else empty
+
+-- | 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)
 
-data MessageParserState = MessageParserState
+-- | Matches if the message is a notification.
+anyNotification :: Session FromServerMessage
+anyNotification = named "Any notification" $ satisfy isServerNotification
 
-type MessageParser = Parsec [FromServerMessage] MessageParserState
+-- | Matches if the message is a request.
+anyRequest :: Session FromServerMessage
+anyRequest = named "Any request" $ satisfy isServerRequest
 
-notification :: MessageParser FromServerMessage
-notification = satisfy isServerNotification
+-- | Matches if the message is a response.
+anyResponse :: Session FromServerMessage
+anyResponse = named "Any response" $ satisfy isServerResponse
 
-request :: MessageParser FromServerMessage
-request = satisfy isServerRequest
+-- | Matches a response for a specific id.
+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
 
-response :: MessageParser FromServerMessage
-response = satisfy isServerResponse
+-- | Matches any type of message.
+anyMessage :: Session FromServerMessage
+anyMessage = satisfy (const True)
 
-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
+-- | A stupid method for getting out the inner message.
+castMsg :: FromJSON a => FromServerMessage -> a
+castMsg = fromMaybe (error "Failed casting a message") . decode . encodeMsg
 
-testLog = NotLogMessage (NotificationMessage "2.0" WindowLogMessage (LogMessageParams MtLog "Hello world"))
+-- | A version of encode that encodes FromServerMessages as if they
+-- weren't wrapped.
+encodeMsg :: FromServerMessage -> B.ByteString
+encodeMsg = encode . genericToJSON (defaultOptions { sumEncoding = UntaggedValue })
 
-testSymbols = RspDocumentSymbols (ResponseMessage "2.0" (IdRspInt 0) (Just (List [])) Nothing)
+-- | 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 (NotLogMessage _) = True
+    shouldSkip (NotShowMessage _) = True
+    shouldSkip (ReqShowMessage _) = True
+    shouldSkip _ = False
 
-parseMessages :: MessageParser a -> [FromServerMessage] -> Either ParseError a
-parseMessages parser = runP parser MessageParserState ""
\ No newline at end of file
+-- | Matches a 'Language.Haskell.LSP.Test.PublishDiagnosticsNotification'
+-- (textDocument/publishDiagnostics) notification.
+publishDiagnosticsNotification :: Session PublishDiagnosticsNotification
+publishDiagnosticsNotification = named "Publish diagnostics notification" $ do
+  NotPublishDiagnostics diags <- satisfy test
+  return diags
+  where test (NotPublishDiagnostics _) = True
+        test _ = False