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Make OpaqueLayoutAndStyleData just a bit less opaque

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It now stores a NonNull<dyn Any>.
This commit is contained in:
Anthony Ramine 2020-04-02 13:17:44 +02:00
parent e47e884cc7
commit 4c61baee30
11 changed files with 83 additions and 65 deletions
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25
components/layout_thread_2020/dom_wrapper.rs
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@ -70,7 +70,6 @@ use std::borrow::Cow;
use std::fmt;
use std::fmt::Debug;
use std::hash::{Hash, Hasher};
use std::ptr::NonNull;
use std::sync::atomic::Ordering;
use std::sync::Arc as StdArc;
use style::applicable_declarations::ApplicableDeclarationBlock;
@ -93,9 +92,7 @@ use style::stylist::CascadeData;
use style::CaseSensitivityExt;
pub unsafe fn drop_style_and_layout_data(data: OpaqueStyleAndLayoutData) {
let ptr = data.ptr.as_ptr() as *mut StyleData;
let non_opaque: *mut StyleAndLayoutData = ptr as *mut _;
let _ = Box::from_raw(non_opaque);
drop(Box::from_raw(data.as_ptr()));
}
#[derive(Clone, Copy)]
@ -283,10 +280,7 @@ impl<'ln> LayoutNode<'ln> for ServoLayoutNode<'ln> {
unsafe fn initialize_data(&self) {
if self.get_raw_data().is_none() {
let ptr: *mut StyleAndLayoutData = Box::into_raw(Box::new(StyleAndLayoutData::new()));
let opaque = OpaqueStyleAndLayoutData {
ptr: NonNull::new_unchecked(ptr as *mut StyleData),
};
let opaque = OpaqueStyleAndLayoutData::new(StyleAndLayoutData::new());
self.init_style_and_layout_data(opaque);
};
}
@ -565,10 +559,7 @@ impl<'le> TElement for ServoLayoutElement<'le> {
}
fn get_data(&self) -> Option<&AtomicRefCell<ElementData>> {
unsafe {
self.get_style_and_layout_data()
.map(|d| &(*(d.ptr.as_ptr() as *mut StyleData)).element_data)
}
self.get_style_data().map(|data| &data.element_data)
}
fn skip_item_display_fixup(&self) -> bool {
@ -704,10 +695,12 @@ impl<'le> ServoLayoutElement<'le> {
}
fn get_style_data(&self) -> Option<&StyleData> {
unsafe {
self.get_style_and_layout_data()
.map(|d| &*(d.ptr.as_ptr() as *mut StyleData))
}
self.get_style_and_layout_data().map(|opaque| {
&opaque
.downcast_ref::<StyleAndLayoutData>()
.unwrap()
.style_data
})
}
pub unsafe fn unset_snapshot_flags(&self) {