2 files changed, 14 insertions, 31 deletions

diff --git a/editors/code/package-lock.json b/editors/code/package-lock.json
index 4fbfaf90f..af3035db9 100644
--- a/editors/code/package-lock.json
+++ b/editors/code/package-lock.json
@@ -2931,22 +2931,22 @@
             }
         },
         "node_modules/vscode-languageclient": {
-            "version": "7.1.0-next.1",
-            "resolved": "https://registry.npmjs.org/vscode-languageclient/-/vscode-languageclient-7.1.0-next.1.tgz",
-            "integrity": "sha512-pMdMyJ5e3CfdyvtDsj6ytTO+WcmrvtrFJWvBk4rZnIKmA3aCjrqTYI0XSWN/Cf4kcaV1J2+fTZf/2RcP2SzDiQ==",
+            "version": "7.1.0-next.2",
+            "resolved": "https://registry.npmjs.org/vscode-languageclient/-/vscode-languageclient-7.1.0-next.2.tgz",
+            "integrity": "sha512-LhSxbPcUDzlBRCp5vRo4ZRk75CrfXZ2FF1soXIlbHp9TeGQI1M3YD8ECAe0VvfYD/STemMzJrj4cHA2oWiOg0w==",
             "dependencies": {
                 "minimatch": "^3.0.4",
                 "semver": "^7.3.4",
-                "vscode-languageserver-protocol": "3.17.0-next.1"
+                "vscode-languageserver-protocol": "3.17.0-next.3"
             },
             "engines": {
                 "vscode": "^1.53.0"
             }
         },
         "node_modules/vscode-languageserver-protocol": {
-            "version": "3.17.0-next.1",
-            "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.17.0-next.1.tgz",
-            "integrity": "sha512-cbFKGk+Q7HQ5RDdf6qiQrRv9qxR/87hBm/GrfLcQ5rmHPJOXg//ZYCXEQF+wSJNmcc6IrnET2cHJUxlZYHUEXA==",
+            "version": "3.17.0-next.3",
+            "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.17.0-next.3.tgz",
+            "integrity": "sha512-II+BN3BqsGXyasN8BDgLFlELxkRLLWkafFzRZMEfMTqJ6oNMINTbMDZgZ6YpbMLHwfoq+h3Q04zLOZqF4YW6bg==",
             "dependencies": {
                 "vscode-jsonrpc": "6.1.0-next.1",
                 "vscode-languageserver-types": "3.17.0-next.1"
@@ -5629,19 +5629,19 @@
             "integrity": "sha512-2s1qEg8N97p8pooHnA8xgR4vnslCTJuE3rQqSQeJuSDklFcQSn9yW8gOinH/1vKeWiPuzHTG9FFty91v4v9Pag=="
         },
         "vscode-languageclient": {
-            "version": "7.1.0-next.1",
-            "resolved": "https://registry.npmjs.org/vscode-languageclient/-/vscode-languageclient-7.1.0-next.1.tgz",
-            "integrity": "sha512-pMdMyJ5e3CfdyvtDsj6ytTO+WcmrvtrFJWvBk4rZnIKmA3aCjrqTYI0XSWN/Cf4kcaV1J2+fTZf/2RcP2SzDiQ==",
+            "version": "7.1.0-next.2",
+            "resolved": "https://registry.npmjs.org/vscode-languageclient/-/vscode-languageclient-7.1.0-next.2.tgz",
+            "integrity": "sha512-LhSxbPcUDzlBRCp5vRo4ZRk75CrfXZ2FF1soXIlbHp9TeGQI1M3YD8ECAe0VvfYD/STemMzJrj4cHA2oWiOg0w==",
             "requires": {
                 "minimatch": "^3.0.4",
                 "semver": "^7.3.4",
-                "vscode-languageserver-protocol": "3.17.0-next.1"
+                "vscode-languageserver-protocol": "3.17.0-next.3"
             }
         },
         "vscode-languageserver-protocol": {
-            "version": "3.17.0-next.1",
-            "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.17.0-next.1.tgz",
-            "integrity": "sha512-cbFKGk+Q7HQ5RDdf6qiQrRv9qxR/87hBm/GrfLcQ5rmHPJOXg//ZYCXEQF+wSJNmcc6IrnET2cHJUxlZYHUEXA==",
+            "version": "3.17.0-next.3",
+            "resolved": "https://registry.npmjs.org/vscode-languageserver-protocol/-/vscode-languageserver-protocol-3.17.0-next.3.tgz",
+            "integrity": "sha512-II+BN3BqsGXyasN8BDgLFlELxkRLLWkafFzRZMEfMTqJ6oNMINTbMDZgZ6YpbMLHwfoq+h3Q04zLOZqF4YW6bg==",
             "requires": {
                 "vscode-jsonrpc": "6.1.0-next.1",
                 "vscode-languageserver-types": "3.17.0-next.1"
diff --git a/editors/code/src/client.ts b/editors/code/src/client.ts
index db5f4c023..0771ca3b6 100644
--- a/editors/code/src/client.ts
+++ b/editors/code/src/client.ts
@@ -2,7 +2,6 @@ import * as lc from 'vscode-languageclient/node';
 import * as vscode from 'vscode';
 import * as ra from '../src/lsp_ext';
 import * as Is from 'vscode-languageclient/lib/common/utils/is';
-import { DocumentSemanticsTokensSignature, DocumentSemanticsTokensEditsSignature, DocumentRangeSemanticTokensSignature } from 'vscode-languageclient/lib/common/semanticTokens';
 import { assert } from './util';
 import { WorkspaceEdit } from 'vscode';
 
@@ -24,13 +23,6 @@ function renderHoverActions(actions: ra.CommandLinkGroup[]): vscode.MarkdownStri
     return result;
 }
 
-// Workaround for https://github.com/microsoft/vscode-languageserver-node/issues/576
-async function semanticHighlightingWorkaround<R, F extends (...args: any[]) => vscode.ProviderResult<R>>(next: F, ...args: Parameters<F>): Promise<R> {
-    const res = await next(...args);
-    if (res == null) throw new Error('busy');
-    return res;
-}
-
 export function createClient(serverPath: string, cwd: string, extraEnv: Env): lc.LanguageClient {
     // '.' Is the fallback if no folder is open
     // TODO?: Workspace folders support Uri's (eg: file://test.txt).
@@ -57,15 +49,6 @@ export function createClient(serverPath: string, cwd: string, extraEnv: Env): lc
         diagnosticCollectionName: "rustc",
         traceOutputChannel,
         middleware: {
-            provideDocumentSemanticTokens(document: vscode.TextDocument, token: vscode.CancellationToken, next: DocumentSemanticsTokensSignature): vscode.ProviderResult<vscode.SemanticTokens> {
-                return semanticHighlightingWorkaround(next, document, token);
-            },
-            provideDocumentSemanticTokensEdits(document: vscode.TextDocument, previousResultId: string, token: vscode.CancellationToken, next: DocumentSemanticsTokensEditsSignature): vscode.ProviderResult<vscode.SemanticTokensEdits | vscode.SemanticTokens> {
-                return semanticHighlightingWorkaround(next, document, previousResultId, token);
-            },
-            provideDocumentRangeSemanticTokens(document: vscode.TextDocument, range: vscode.Range, token: vscode.CancellationToken, next: DocumentRangeSemanticTokensSignature): vscode.ProviderResult<vscode.SemanticTokens> {
-                return semanticHighlightingWorkaround(next, document, range, token);
-            },
             async provideHover(document: vscode.TextDocument, position: vscode.Position, token: vscode.CancellationToken, _next: lc.ProvideHoverSignature) {
                 return client.sendRequest(lc.HoverRequest.type, client.code2ProtocolConverter.asTextDocumentPositionParams(document, position), token).then(
                     (result) => {