Bug 149073 – ChildNode.replaceWith() without argument should replace the node with an empty DocumentFragment

• Component: DOM
• Status: RESOLVED FIXED

[Chris Dumez]

ChildNode.replaceWith() without argument should replace the node with an empty DocumentFragment, as per the specification:
https://dom.spec.whatwg.org/#dom-childnode-replacewith
https://dom.spec.whatwg.org/#converting-nodes-into-a-node

Currently, WebKit does not do anything in this case (no-op).

[Chris Dumez]

rdar://problem/22547801

[Chris Dumez]

Created attachment 261016 [details]
Patch

[Ryosuke Niwa]

Comment on attachment 261016 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=261016&action=review

> Source/WebCore/ChangeLog:17
> +        No new tests, already covered by existing test.

Does this match behaviors of other browsers?

[Chris Dumez]

(In reply to comment #3)
> Comment on attachment 261016 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=261016&action=review
> 
> > Source/WebCore/ChangeLog:17
> > +        No new tests, already covered by existing test.
> 
> Does this match behaviors of other browsers?

Other browsers don't seem to implement replaceChild() yet. This is fairly recent I believe.

[Chris Dumez]

(In reply to comment #4)
> (In reply to comment #3)
> > Comment on attachment 261016 [details]
> > Patch
> > 
> > View in context:
> > https://bugs.webkit.org/attachment.cgi?id=261016&action=review
> > 
> > > Source/WebCore/ChangeLog:17
> > > +        No new tests, already covered by existing test.
> > 
> > Does this match behaviors of other browsers?
> 
> Other browsers don't seem to implement replaceChild() yet. This is fairly
> recent I believe.

replaceWith

[WebKit Commit Bot]

Comment on attachment 261016 [details]
Patch

Clearing flags on attachment: 261016

Committed r189653: <http://trac.webkit.org/changeset/189653>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Darin Adler]

Comment on attachment 261016 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=261016&action=review

> Source/WebCore/dom/Node.cpp:564
> +    if (ec)
>          return;

Not new, but this code is wrong. It’s not the caller’s responsibility to set ec to zero. The caller might not set it at all if it doesn’t plan to look at it.

That means that ec might be non-zero when this function is called, and convertNodesOrStringsIntoNode might not touch it, so checking it is not right. Someone has to set ec to 0 if they are going to be checking it after the fact. So either Node::replaceWith or convertNodesOrStringsIntoNode needs to set ec to zero. This error seems to be repeated in multiple functions in this file.