Merge pull request #8281 from microsoft/coleng/fix_no_folder_multiroot_install_failure

Extension/src/LanguageServer/configurations.ts

@@ -264,7 +264,7 @@ export class CppProperties {
             // not for each notifying folder.
             const savedDocWorkspaceFolder: vscode.WorkspaceFolder | undefined = vscode.workspace.getWorkspaceFolder(doc.uri);
             const notifyingWorkspaceFolder: vscode.WorkspaceFolder | undefined = vscode.workspace.getWorkspaceFolder(vscode.Uri.file(settingsPath));
-            if ((!savedDocWorkspaceFolder && vscode.workspace.workspaceFolders && notifyingWorkspaceFolder === vscode.workspace.workspaceFolders[0])
+            if ((!savedDocWorkspaceFolder && vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0 && notifyingWorkspaceFolder === vscode.workspace.workspaceFolders[0])
                || savedDocWorkspaceFolder === notifyingWorkspaceFolder) {
                 let fileType: string | undefined;
                 const documentPath: string = doc.uri.fsPath.toLowerCase();

Extension/src/LanguageServer/extension.ts

@@ -284,7 +284,7 @@ function sendActivationTelemetry(): void {
 }
 
 function realActivation(): void {
-    if (new CppSettings(vscode.workspace.workspaceFolders ? vscode.workspace.workspaceFolders[0].uri : undefined).intelliSenseEngine === "Disabled") {
+    if (new CppSettings((vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0) ? vscode.workspace.workspaceFolders[0]?.uri : undefined).intelliSenseEngine === "Disabled") {
         throw new Error(intelliSenseDisabledError);
     } else {
         console.log("activating extension");

Extension/src/common.ts

@@ -1272,7 +1272,7 @@ function getUniqueWorkspaceNameHelper(workspaceFolder: vscode.WorkspaceFolder, a
         return workspaceFolderName; // No duplicate names to search for.
     }
     for (let i: number = 0; i < workspaceFolder.index; ++i) {
-        if (vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders[i].name === workspaceFolderName) {
+        if (vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0 && vscode.workspace.workspaceFolders[i].name === workspaceFolderName) {
             return addSubfolder ? path.join(workspaceFolderName, String(workspaceFolder.index)) : // Use the index as a subfolder.
                 workspaceFolderName + String(workspaceFolder.index);
         }

Extension/src/main.ts

@@ -393,7 +393,7 @@ async function postInstall(info: PlatformInformation): Promise<void> {
 }
 
 async function finalizeExtensionActivation(): Promise<void> {
-    const settings: CppSettings = new CppSettings(vscode.workspace.workspaceFolders ? vscode.workspace.workspaceFolders[0].uri : undefined);
+    const settings: CppSettings = new CppSettings((vscode.workspace.workspaceFolders && vscode.workspace.workspaceFolders.length > 0) ? vscode.workspace.workspaceFolders[0]?.uri : undefined);
     if (settings.intelliSenseEngine === "Disabled") {
         languageServiceDisabled = true;
         getTemporaryCommandRegistrarInstance().disableLanguageServer();