[PATCH] D67096: [clangd][vscode] Add a flag to enable semantic highlighting in clangd

[Ilya Biryukov via Phabricator via cfe-commits]

ilya-biryukov added inline comments.


================
Comment at: clang-tools-extra/clangd/clients/clangd-vscode/src/extension.ts:113
   const semanticHighlightingFeature =
-      new semanticHighlighting.SemanticHighlightingFeature();
+      new semanticHighlighting.SemanticHighlightingFeature(
+          getConfig<boolean>('semanticHighlighting'));
----------------
hokein wrote:
> ilya-biryukov wrote:
> > Why not avoid calling `clangdClient.registerFeature` instead?
> > Would allow to:
> > - not change the `SemanticHighlightingFeature` class, keeping it simpler,
> > - ensure we do not do any extra work if the feature is disabled.
> good point, done.
Should we update other uses of `semanticHighlightingFeature` too?

`context.subscriptions.push(vscode.Disposable.from(semanticHighlightingFeature))` probably ensures we call `dispose()` when the `clangdClient` is getting removed, I guess we definitely don't need that.

Other uses as well:
- no need to pass notification is highlighting is disabled.
- no need to cleanup if highlighting is disabled.

Maybe assign null or undefined to `semanticHighlightingFeature` when the flag is false?
At each usage we can check whether the `semanticHighlightingFeature` is not null and only call relevant methods if that's the case.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D67096/new/

https://reviews.llvm.org/D67096