[HLSL] clangd support

package.json

@@ -20,14 +20,16 @@
         "C++",
         "clang",
         "clangd",
-        "LLVM"
+        "LLVM",
+        "HLSL"
     ],
     "activationEvents": [
         "onLanguage:c",
         "onLanguage:cpp",
         "onLanguage:cuda-cpp",
         "onLanguage:objective-c",
-        "onLanguage:objective-cpp"
+        "onLanguage:objective-cpp",
+        "onLanguage:hlsl"
     ],
     "main": "./out/bundle",
     "scripts": {
@@ -194,6 +196,11 @@
                     "type": "boolean",
                     "default": true,
                     "description": "Enable clangd language server features"
+                },
+                "clangd.enableHLSL": {
+                    "type": "boolean",
+                    "default": false,
+                    "description": "Enable experimental HLSL Support."
                 }
             }
         },

src/clangd-context.ts

@@ -21,8 +21,18 @@ export const clangdDocumentSelector = [
   {scheme: 'file', language: 'objective-cpp'},
 ];
 
+function getDocumentSelector()
+{
+  var documentSelector = clangdDocumentSelector;
+  if (vscode.workspace.getConfiguration('clangd').get('enableHLSL'))
+    documentSelector.push({scheme: 'file', language: 'hlsl'});
+  return documentSelector;
+}
+
 export function isClangdDocument(document: vscode.TextDocument) {
-  return vscode.languages.match(clangdDocumentSelector, document);
+  const documentSelector = getDocumentSelector();
+
+  return vscode.languages.match(documentSelector, document);
 }
 
 class ClangdLanguageClient extends vscodelc.LanguageClient {
@@ -104,7 +114,7 @@ export class ClangdContext implements vscode.Disposable {
 
     const clientOptions: vscodelc.LanguageClientOptions = {
       // Register the server for c-family and cuda files.
-      documentSelector: clangdDocumentSelector,
+      documentSelector: getDocumentSelector(),
       initializationOptions: {
         clangdFileStatus: true,
         fallbackFlags: await config.get<string[]>('fallbackFlags')