X-Git-Url: http://git.lukelau.me/?a=blobdiff_plain;f=src%2FLanguage%2FHaskell%2FLSP%2FTest%2FParsing.hs;h=49c24c9ae52715862a05baf0cfbe294ef04a6a82;hb=a65254a5b7a5312bc616d601737f8595b14279ef;hp=892f33046771e91608dc0fd85db13b08a66524c1;hpb=df782ad008b840c0860173821226542e2e70f2e9;p=lsp-test.git diff --git a/src/Language/Haskell/LSP/Test/Parsing.hs b/src/Language/Haskell/LSP/Test/Parsing.hs index 892f330..49c24c9 100644 --- a/src/Language/Haskell/LSP/Test/Parsing.hs +++ b/src/Language/Haskell/LSP/Test/Parsing.hs @@ -1,131 +1,126 @@ -{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE MultiParamTypeClasses #-} +{-# LANGUAGE FlexibleInstances #-} +{-# LANGUAGE ScopedTypeVariables #-} +{-# LANGUAGE RankNTypes #-} module Language.Haskell.LSP.Test.Parsing where -import Prelude hiding ( id ) +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 Control.Lens import qualified Data.ByteString.Lazy.Char8 as B +import Data.Conduit hiding (await) +import Data.Conduit.Parser import Data.Maybe -import System.IO -import Language.Haskell.LSP.Types - hiding ( error ) import Language.Haskell.LSP.Messages -import qualified Data.HashMap.Strict as HM - -getAllMessages :: Handle -> IO [B.ByteString] -getAllMessages h = do - done <- hIsEOF h - if done - then return [] - else do - msg <- getNextMessage h - - (msg :) <$> getAllMessages h - --- | Fetches the next message bytes based on --- the Content-Length header -getNextMessage :: Handle -> IO B.ByteString -getNextMessage h = do - headers <- getHeaders h - case read . init <$> lookup "Content-Length" headers of - Nothing -> error "Couldn't read Content-Length header" - Just size -> B.hGet h size - -addHeader :: B.ByteString -> B.ByteString -addHeader content = B.concat - [ "Content-Length: " - , B.pack $ show $ B.length content - , "\r\n" - , "\r\n" - , content - ] - -getHeaders :: Handle -> IO [(String, String)] -getHeaders h = do - l <- hGetLine h - let (name, val) = span (/= ':') l - if null val then return [] else ((name, drop 2 val) :) <$> getHeaders h - -type RequestMap = HM.HashMap LspId FromClientMessage - -getRequestMap :: [FromClientMessage] -> RequestMap -getRequestMap = foldl helper HM.empty +import Language.Haskell.LSP.Types +import Language.Haskell.LSP.Test.Compat +import Language.Haskell.LSP.Test.Decoding +import Language.Haskell.LSP.Test.Messages +import System.IO + +data SessionContext = SessionContext + { + serverIn :: Handle, + rootDir :: FilePath, + messageChan :: Chan FromServerMessage, + requestMap :: MVar RequestMap + } + +newtype SessionState = SessionState + { + curReqId :: LspId + } + +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', +-- 'sendRequest' and 'sendNotification'. +-- +-- @ +-- runSession \"path\/to\/root\/dir\" $ do +-- docItem <- getDocItem "Desktop/simple.hs" "haskell" +-- sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams docItem) +-- diagnostics <- getMessage :: Session PublishDiagnosticsNotification +-- @ +type Session = ParserStateReader FromServerMessage SessionState SessionContext IO + +-- | Matches if the message is a notification. +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. +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. +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 :: Monad m => ConduitParser FromServerMessage m FromServerMessage +loggingNotification = satisfy shouldSkip where - helper acc msg = case msg of - (ReqInitialize val) -> insert val msg acc - (ReqShutdown val) -> insert val msg acc - (ReqHover val) -> insert val msg acc - (ReqCompletion val) -> insert val msg acc - (ReqCompletionItemResolve val) -> insert val msg acc - (ReqSignatureHelp val) -> insert val msg acc - (ReqDefinition val) -> insert val msg acc - (ReqFindReferences val) -> insert val msg acc - (ReqDocumentHighlights val) -> insert val msg acc - (ReqDocumentSymbols val) -> insert val msg acc - (ReqWorkspaceSymbols val) -> insert val msg acc - (ReqCodeAction val) -> insert val msg acc - (ReqCodeLens val) -> insert val msg acc - (ReqCodeLensResolve val) -> insert val msg acc - (ReqDocumentFormatting val) -> insert val msg acc - (ReqDocumentRangeFormatting val) -> insert val msg acc - (ReqDocumentOnTypeFormatting val) -> insert val msg acc - (ReqRename val) -> insert val msg acc - (ReqExecuteCommand val) -> insert val msg acc - (ReqDocumentLink val) -> insert val msg acc - (ReqDocumentLinkResolve val) -> insert val msg acc - (ReqWillSaveWaitUntil val) -> insert val msg acc - _ -> acc - insert m = HM.insert (m ^. id) - -matchResponseMsgType :: FromClientMessage -> B.ByteString -> FromServerMessage -matchResponseMsgType req bytes = case req of - ReqInitialize _ -> RspInitialize $ fromJust $ decode bytes - ReqShutdown _ -> RspShutdown $ fromJust $ decode bytes - ReqHover _ -> RspHover $ fromJust $ decode bytes - ReqCompletion _ -> RspCompletion $ fromJust $ decode bytes - ReqCompletionItemResolve _ -> - RspCompletionItemResolve $ fromJust $ decode bytes - ReqSignatureHelp _ -> RspSignatureHelp $ fromJust $ decode bytes - ReqDefinition _ -> RspDefinition $ fromJust $ decode bytes - ReqFindReferences _ -> RspFindReferences $ fromJust $ decode bytes - ReqDocumentHighlights _ -> RspDocumentHighlights $ fromJust $ decode bytes - ReqDocumentSymbols _ -> RspDocumentSymbols $ fromJust $ decode bytes - ReqWorkspaceSymbols _ -> RspWorkspaceSymbols $ fromJust $ decode bytes - ReqCodeAction _ -> RspCodeAction $ fromJust $ decode bytes - ReqCodeLens _ -> RspCodeLens $ fromJust $ decode bytes - ReqCodeLensResolve _ -> RspCodeLensResolve $ fromJust $ decode bytes - ReqDocumentFormatting _ -> RspDocumentFormatting $ fromJust $ decode bytes - ReqDocumentRangeFormatting _ -> - RspDocumentRangeFormatting $ fromJust $ decode bytes - ReqDocumentOnTypeFormatting _ -> - RspDocumentOnTypeFormatting $ fromJust $ decode bytes - ReqRename _ -> RspRename $ fromJust $ decode bytes - ReqExecuteCommand _ -> RspExecuteCommand $ fromJust $ decode bytes - ReqDocumentLink _ -> RspDocumentLink $ fromJust $ decode bytes - ReqDocumentLinkResolve _ -> RspDocumentLinkResolve $ fromJust $ decode bytes - ReqWillSaveWaitUntil _ -> RspWillSaveWaitUntil $ fromJust $ decode bytes - x -> error $ "Not a request: " ++ show x - -decodeFromServerMsg :: RequestMap -> B.ByteString -> FromServerMessage -decodeFromServerMsg reqMap bytes = - case HM.lookup "method" (fromJust $ decode bytes :: Object) of - Just methodStr -> case fromJSON methodStr of - Success method -> case method of - -- We can work out the type of the message - TextDocumentPublishDiagnostics -> NotPublishDiagnostics $ fromJust $ decode bytes - WindowShowMessage -> NotShowMessage $ fromJust $ decode bytes - WindowLogMessage -> NotLogMessage $ fromJust $ decode bytes - CancelRequestServer -> NotCancelRequestFromServer $ fromJust $ decode bytes - TelemetryEvent -> NotTelemetry $ fromJust $ decode bytes - WindowShowMessageRequest -> ReqShowMessage $ fromJust $ decode bytes - ClientRegisterCapability -> ReqRegisterCapability $ fromJust $ decode bytes - ClientUnregisterCapability -> ReqUnregisterCapability $ fromJust $ decode bytes - WorkspaceApplyEdit -> ReqApplyWorkspaceEdit $ fromJust $ decode bytes - - Error e -> error e - - Nothing -> case decode bytes :: Maybe (ResponseMessage Value) of - Just msg -> case HM.lookup (requestId $ msg ^. id) reqMap of - Just req -> matchResponseMsgType req bytes -- try to decode it to more specific type - Nothing -> error "Couldn't match up response with request" - Nothing -> error "Couldn't decode message" \ No newline at end of file + shouldSkip (NotLogMessage _) = True + shouldSkip (NotShowMessage _) = True + 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 + if pred x + then return x + else empty + +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 + +get :: Monad m => ParserStateReader a s r m s +get = lift Control.Monad.Trans.State.get + +put :: Monad m => s -> ParserStateReader a s r m () +put = lift . Control.Monad.Trans.State.put + +modify :: Monad m => (s -> s) -> ParserStateReader a s r m () +modify = lift . Control.Monad.Trans.State.modify + +ask :: Monad m => ParserStateReader a s r m r +ask = lift $ lift Control.Monad.Trans.Reader.ask