script: Reduce the use of unsafe in LayoutDom (#31979)

Remove the use of unsafe code in the layout wrappers of the DOM. The
main change here is that `unsafe_get()` no longer needs to be an unsafe
method, which allows us to transitively remove or reduce unsafe blocks
from callers. The function itself is not renamed, because it's still
a bit dangerous to start removing the layers of abstraction from actual
DOM nodes.

In addition `init_style_and_opaque_layout_data` can be merged into
`initialize_data`, which removes one more unsafe method.

Finally, a "Safety" section is added to some unsafe methods.
This commit is contained in:
Martin Robinson 2024-04-03 10:41:19 +02:00 committed by GitHub
parent 8aaff61334
commit 18b37e676b
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19 changed files with 89 additions and 86 deletions

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@ -515,15 +515,13 @@ pub trait HTMLIFrameElementLayoutMethods {
impl HTMLIFrameElementLayoutMethods for LayoutDom<'_, HTMLIFrameElement> {
#[inline]
#[allow(unsafe_code)]
fn pipeline_id(self) -> Option<PipelineId> {
unsafe { (self.unsafe_get()).pipeline_id.get() }
(self.unsafe_get()).pipeline_id.get()
}
#[inline]
#[allow(unsafe_code)]
fn browsing_context_id(self) -> Option<BrowsingContextId> {
unsafe { (self.unsafe_get()).browsing_context_id.get() }
(self.unsafe_get()).browsing_context_id.get()
}
fn get_width(self) -> LengthOrPercentageOrAuto {