Correct VFS behaviour

[opengl.git] / src / Language / Haskell / LSP / Test / Session.hs

diff --git a/src/Language/Haskell/LSP/Test/Session.hs b/src/Language/Haskell/LSP/Test/Session.hs
index 6599cbdef746b1aa659b7ea92ab6665639654e28..0553160aee215862ebb4fbad547f087a9fcbaca6 100644 (file)
--- a/src/Language/Haskell/LSP/Test/Session.hs
+++ b/src/Language/Haskell/LSP/Test/Session.hs
@@ -11,6 +11,7 @@ module Language.Haskell.LSP.Test.Session
   , get
   , put
   , modify
+  , modifyM
   , ask)
 
 where
@@ -32,11 +33,14 @@ import Data.Conduit.Parser
 import Data.Default
 import Data.Foldable
 import Data.List
+import qualified Data.Map as Map
 import qualified Data.Text as T
+import qualified Data.Text.IO as T
 import qualified Data.HashMap.Strict as HashMap
+import Data.Maybe
 import Language.Haskell.LSP.Messages
 import Language.Haskell.LSP.TH.ClientCapabilities
-import Language.Haskell.LSP.Types
+import Language.Haskell.LSP.Types hiding (error)
 import Language.Haskell.LSP.VFS
 import Language.Haskell.LSP.Test.Compat
 import Language.Haskell.LSP.Test.Decoding
@@ -62,10 +66,11 @@ data SessionConfig = SessionConfig
   {
     capabilities :: ClientCapabilities -- ^ Specific capabilities the client should advertise. Default is yes to everything.
   , timeout :: Int -- ^ Maximum time to wait for a request in seconds. Defaults to 60.
+  , logStdErr :: Bool -- ^ When True redirects the servers stderr output to haskell-lsp-test's stdout. Defaults to False
   }
 
 instance Default SessionConfig where
-  def = SessionConfig def 60
+  def = SessionConfig def 60 False
 
 class Monad m => MonadSessionConfig m where
   sessionConfig :: m SessionConfig
@@ -127,6 +132,12 @@ put = lift . State.put
 modify :: Monad m => (s -> s) -> ParserStateReader a s r m ()
 modify = lift . State.modify
 
+modifyM :: Monad m => (s -> m s) -> ParserStateReader a s r m ()
+modifyM f = do
+  old <- lift State.get
+  new <- lift $ lift $ lift $ f old
+  lift $ State.put new
+
 ask :: Monad m => ParserStateReader a s r m r
 ask = lift $ lift Reader.ask
 
@@ -168,30 +179,57 @@ runSessionWithHandles serverIn serverOut serverHandler config rootDir session =
 
 processTextChanges :: FromServerMessage -> SessionProcessor ()
 processTextChanges (ReqApplyWorkspaceEdit r) = do
-  List changeParams <- case r ^. params . edit . documentChanges of
-    Just cs -> mapM applyTextDocumentEdit cs
+
+  allChangeParams <- case r ^. params . edit . documentChanges of
+    Just (List cs) -> do
+      mapM_ (checkIfNeedsOpened . (^. textDocument . uri)) cs
+      return $ map getParams cs
     Nothing -> case r ^. params . edit . changes of
-      Just cs -> mapM (uncurry applyTextEdit) (List (HashMap.toList cs))
-      Nothing -> return (List [])
+      Just cs -> do
+        mapM_ checkIfNeedsOpened (HashMap.keys cs)
+        return $ concatMap (uncurry getChangeParams) (HashMap.toList cs)
+      Nothing -> error "No changes!"
 
-  let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) changeParams
+  oldVFS <- vfs <$> lift State.get
+  newVFS <- liftIO $ changeFromServerVFS oldVFS r
+  lift $ State.modify (\s -> s { vfs = newVFS })
+
+  let groupedParams = groupBy (\a b -> (a ^. textDocument == b ^. textDocument)) allChangeParams
       mergedParams = map mergeParams groupedParams
 
+  ctx <- lift $ lift Reader.ask
+
   -- TODO: Don't do this when replaying a session
   forM_ mergedParams $ \p -> do
-    h <- serverIn <$> lift (lift Reader.ask)
-    let msg = NotificationMessage "2.0" TextDocumentDidChange p
+    let h = serverIn ctx
+        msg = NotificationMessage "2.0" TextDocumentDidChange p
     liftIO $ B.hPut h $ addHeader (encode msg)
 
-  where applyTextDocumentEdit (TextDocumentEdit docId (List edits)) = do
+  where checkIfNeedsOpened uri = do
           oldVFS <- vfs <$> lift State.get
-          let changeEvents = map (\e -> TextDocumentContentChangeEvent (Just (e ^. range)) Nothing (e ^. newText)) edits
-              params = DidChangeTextDocumentParams docId (List changeEvents)
-          newVFS <- liftIO $ changeVFS oldVFS (fmClientDidChangeTextDocumentNotification params)
+          ctx <- lift $ lift Reader.ask
+
+          -- if its not open, open it
+          unless (uri `Map.member` oldVFS) $ do
+            let fp = fromJust $ uriToFilePath uri
+            contents <- liftIO $ T.readFile fp
+            let item = TextDocumentItem (filePathToUri fp) "" 0 contents
+                msg = NotificationMessage "2.0" TextDocumentDidOpen (DidOpenTextDocumentParams item)
+            liftIO $ B.hPut (serverIn ctx) $ addHeader (encode msg)
+
+            oldVFS <- vfs <$> lift State.get
+            newVFS <- liftIO $ openVFS oldVFS msg
             lift $ State.modify (\s -> s { vfs = newVFS })
-          return params
 
-        applyTextEdit uri edits = applyTextDocumentEdit (TextDocumentEdit (VersionedTextDocumentIdentifier uri 0) edits)
+        getParams (TextDocumentEdit docId (List edits)) =
+          let changeEvents = map (\e -> TextDocumentContentChangeEvent (Just (e ^. range)) Nothing (e ^. newText)) edits
+            in DidChangeTextDocumentParams docId (List changeEvents)
+
+        textDocumentVersions uri = map (VersionedTextDocumentIdentifier uri) [0..]
+
+        textDocumentEdits uri edits = map (\(v, e) -> TextDocumentEdit v (List [e])) $ zip (textDocumentVersions uri) edits
+
+        getChangeParams uri (List edits) = map getParams (textDocumentEdits uri (reverse edits))
 
         mergeParams :: [DidChangeTextDocumentParams] -> DidChangeTextDocumentParams
         mergeParams params = let events = concat (toList (map (toList . (^. contentChanges)) params))