Throw error if no folder is opened

2020-03-31 09:05:22 +01:00
parent 6e535915bd
commit a781a58fe2
3 changed files with 9 additions and 4 deletions
--- a/editors/code/src/main.ts
+++ b/editors/code/src/main.ts
@@ -42,7 +42,12 @@ export async function activate(context: vscode.ExtensionContext) {
    const state = new PersistentState(context.globalState);
    const serverPath = await bootstrap(config, state);

-    const workspaceFolder = vscode.workspace.workspaceFolders?.[0] ?? null;
+    const workspaceFolder = vscode.workspace.workspaceFolders?.[0];
+    if (workspaceFolder === undefined) {
+        const err = "Cannot activate rust-analyzer when no folder is opened";
+        void vscode.window.showErrorMessage(err);
+        throw new Error(err);
+    }

    // Note: we try to start the server before we activate type hints so that it
    // registers its `onDidChangeDocument` handler before us.