+ openDoc' file languageId contents
+
+-- | This is a variant of `openDoc` that takes the file content as an argument.
+openDoc' :: FilePath -> String -> T.Text -> Session TextDocumentIdentifier
+openDoc' file languageId contents = do
+ context <- ask
+ let fp = rootDir context </> file
+ uri = filePathToUri fp
+ item = TextDocumentItem uri (T.pack languageId) 0 contents
+ sendNotification TextDocumentDidOpen (DidOpenTextDocumentParams item)
+ pure $ TextDocumentIdentifier uri
+
+-- | Closes a text document and sends a notification to the client.
+closeDoc :: TextDocumentIdentifier -> Session ()
+closeDoc docId = do
+ let params = DidCloseTextDocumentParams (TextDocumentIdentifier (docId ^. uri))
+ sendNotification TextDocumentDidClose params
+
+-- | Changes a text document and sends a notification to the client
+changeDoc :: TextDocumentIdentifier -> [TextDocumentContentChangeEvent] -> Session ()
+changeDoc docId changes = do
+ verDoc <- getVersionedDoc docId
+ let params = DidChangeTextDocumentParams (verDoc & version . non 0 +~ 1) (List changes)
+ sendNotification TextDocumentDidChange params