[webkit-dev] Introducing RenderPtr!

[Andreas Kling]

Sup WebKittens,

I’ve just added a “RenderPtr" smart pointer to the rendering code and am in the process of switching code from using raw pointers to this.

Check out the code here: <https://trac.webkit.org/r161115> (note that I’ve since renamed createRenderObject to createRenderer per Antti’s suggestion.)

It’s basically a clone of OwnPtr that destroys the pointee by calling destroy() on it. This is because RenderObjects currently has a virtual willBeDestroyed() that may depend on still being inside the tree when it executes. I’d like to simplify this eventually, and switch over to std::unique_ptr, but that will require some spooky changes to basic tree operations so I’m deferring it for now.

Cheers and happy new year,
Kling
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