[webkit-reviews] review granted: [Bug 200458] Web Inspector: Implement `queryHolders` Command Line API : [Attachment 376464] Patch
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Aug 19 22:03:28 PDT 2019
Joseph Pecoraro <joepeck at webkit.org> has granted Devin Rousso
<drousso at apple.com>'s request for review:
Bug 200458: Web Inspector: Implement `queryHolders` Command Line API
https://bugs.webkit.org/show_bug.cgi?id=200458
Attachment 376464: Patch
https://bugs.webkit.org/attachment.cgi?id=376464&action=review
--- Comment #38 from Joseph Pecoraro <joepeck at webkit.org> ---
Comment on attachment 376464
--> https://bugs.webkit.org/attachment.cgi?id=376464
Patch
View in context: https://bugs.webkit.org/attachment.cgi?id=376464&action=review
r=me
> Source/JavaScriptCore/inspector/JSInjectedScriptHost.cpp:808
> + if (reason == SlotVisitor::RootMarkReason::Debugger)
Would be great to apply this to HeapSnapshotBuilder and make it so the Web
Inspector UI can hide debugger objects!
>
Source/WebInspectorUI/UserInterface/Controllers/JavaScriptRuntimeCompletionProv
ider.js:335
> "queryInstances",
> "queryObjects",
> + "queryHolders",
Look like this was in alphabetical order. Might as well keep it that way!
> LayoutTests/inspector/console/queryHolders-expected.txt:66
> +-- Running test case: CommandLineAPI.queryHolders.OnlyHeldByDebugger
> +PASS: The result should have 0 items.
I wonder if this will confuse anyone. I think an empty array is the right thing
to do though.
> LayoutTests/inspector/console/queryHolders.html:97
> + addTest(`PromiseFinally`);
Great tests!
Possible additional tests (not required):
• An object only referenced via an Object Symbol property (should just be
like an object string property)
• An object with a lot of references, like `window` or something like that
(ensure nothing crashes)
• An object referenced in an array a lot of times only shows up once `arr =
[foo, foo]`, foo has a single `arr` holder, since it is de-duplicated.
What happens with:
• Elements. With `$0` do we see the parent element? I'd suspect it might just
be the DOMWrapperWorld, which has no good output.
> LayoutTests/inspector/console/queryHolders.html:151
> + suite.addTestCase({
> + name: "CommandLineAPI.queryHolders.NoParameter",
Yeah, I kinda think `queryHolders()` and `queryObjects()` no parameters should
throw an exception. Could be done as a follow-up. I realize that doesn't match
what Chrome does.
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