[webkit-dev] Documenting common null pointer errors

Adam Barth abarth at webkit.org
Tue Aug 11 21:41:54 PDT 2009

Ok, here's my lame attempt at ASCII art:



On Tue, Aug 11, 2009 at 3:55 PM, Maciej Stachowiak<mjs at apple.com> wrote:
> On Aug 11, 2009, at 3:03 PM, Adam Barth wrote:
>> In reviewing patches, I feel like I'm commonly pointing out
>> DOMWindow::frame and Document::frame, etc, can be null in some
>> circumstances.  Would it be useful to have a diagram of the major
>> objects (Page, Frame, DOMWindow, Document, etc) somewhere on
>> webkit.org that shows their relation, which links can be null, and
>> which objects change / are preserved during navigation?
>> If so, I'm happy to create this with my current knowledge, and
>> hopefully folks with more experience will add parts that I don't know.
>> What's the best medium to make this easy to update in the future?
>> SVG?  ASCII art?
> It would be useful to make such a diagram. Also hard to make it accurate!
> I'd be happy to provide information and advice to anyone working on this.
> I'm not sure what format to use to capture the data. In the abstract, my
> preference would be a plain text file that could be transformed into
> diagrams in various chosen formats, but that depends on what kind of data we
> capture.
> Regards,
> Maciej

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