Remove legacy semantic-highlighting client code. (#273)

* Remove legacy semantic-highlighting client code.

The legacy semantic-highlighting support has been dropped since
clangd13.

* Also drop obsolete dependencies

Co-authored-by: Sam McCall <[email protected]>

Author: hokein

package-lock.json

@@ -46,9 +46,7 @@
     "dependencies": {
         "@clangd/install": "0.1.4",
         "abort-controller": "^3.0.0",
-        "jsonc-parser": "^2.1.0",
-        "vscode-languageclient": "7.1.0-next.1",
-        "vscode-languageserver-types": "3.16.0"
+        "vscode-languageclient": "7.1.0-next.1"
     },
     "devDependencies": {
         "@types/glob": "^7.1.1",
@@ -58,9 +56,9 @@
         "clang-format": "1.4.0",
         "glob": "^7.1.4",
         "mocha": "^9.1.3",
+        "ovsx": "^0.2.1",
         "typescript": "^3.8.3",
         "vsce": "^1.93.0",
-        "ovsx": "^0.2.1",
         "vscode-test": "^1.3.0"
     },
     "repository": {
@@ -104,7 +102,8 @@
                 "clangd.semanticHighlighting": {
                     "type": "boolean",
                     "default": true,
-                    "description": "Enable semantic highlighting in clangd."
+                    "description": "Enable semantic highlighting in clangd.",
+                    "deprecationMessage": "Legacy semanticHighlights is no longer supported. Please use `editor.semanticHighlighting.enabled` instead."
                 },
                 "clangd.fallbackFlags": {
                     "type": "array",
@@ -342,24 +341,24 @@
             ]
         },
         "colors": [
-          {
-            "id": "clangd.inlayHints.foreground",
-            "description": "Foreground color of inlay hints",
-            "defaults": {
-              "dark": "#A0A0A0F0",
-              "light": "#747474",
-              "highContrast": "#BEBEBE"
-            }
-          },
-          {
-            "id": "clangd.inlayHints.background",
-            "description": "Background color of inlay hints",
-            "defaults": {
-              "dark": "#11223300",
-              "light": "#11223300",
-              "highContrast": "#11223300"
+            {
+                "id": "clangd.inlayHints.foreground",
+                "description": "Foreground color of inlay hints",
+                "defaults": {
+                    "dark": "#A0A0A0F0",
+                    "light": "#747474",
+                    "highContrast": "#BEBEBE"
+                }
+            },
+            {
+                "id": "clangd.inlayHints.background",
+                "description": "Background color of inlay hints",
+                "defaults": {
+                    "dark": "#11223300",
+                    "light": "#11223300",
+                    "highContrast": "#11223300"
+                }
             }
-          }
         ]
     }
 }

package.json

@@ -9,7 +9,6 @@ import * as inlayHints from './inlay-hints';
 import * as install from './install';
 import * as memoryUsage from './memory-usage';
 import * as openConfig from './open-config';
-import * as semanticHighlighting from './semantic-highlighting';
 import * as switchSourceHeader from './switch-source-header';
 import * as typeHierarchy from './type-hierarchy';
 
@@ -151,8 +150,6 @@ export class ClangdContext implements vscode.Disposable {
         this.client.createDefaultErrorHandler(
             // max restart count
             config.get<boolean>('restartAfterCrash') ? /*default*/ 4 : 0);
-    if (config.get<boolean>('semanticHighlighting'))
-      semanticHighlighting.activate(this);
     this.client.registerFeature(new EnableEditsNearCursorFeature);
     typeHierarchy.activate(this);
     inlayHints.activate(this);