[webkit-dev] Troubles with Anonymous Blocks

Roland Steiner rolandsteiner at google.com
Sun Feb 14 23:36:51 PST 2010

[Sorry for the late answer, I've been on vacation the last few days]

Basically, by setting

    virtual bool createsAnonymousWrapper() const { return true; }

the class specifies that it creates its own anonymous child wrapper objects
that are not run-off-the-mill anonymous wrappers. I.e., it prevents such
child objects from being (re-)used in ways you didn't anticipate/intend.
There are only a few places (two, IIRC), that query this function, so if you
grep for it, you should get a good overview quickly whether this should
affect your code or not.



On Wed, Feb 10, 2010 at 12:08 AM, Alex Milowski <alex at milowski.org> wrote:

> On Mon, Feb 8, 2010 at 9:42 PM, Roland Steiner <rolandsteiner at google.com>
> wrote:
> > Just a stab in the dark here, and without knowledge about recent changes
> > that could have caused your code to break (so this could be wildly off).
> The
> > difference between the 2 versions AFAICT is whether m_isAnonymous is set
> or
> > not, which leads me to the question: have you properly
> > overridden createsAnonymousWrapper() in the parent?
> I haven't overridden that method.  What does it do?
> --
> --Alex Milowski
> "The excellence of grammar as a guide is proportional to the paucity of the
> inflexions, i.e. to the degree of analysis effected by the language
> considered."
> Bertrand Russell in a footnote of Principles of Mathematics
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