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script: Make layout DOM wrappers not generic on layout data (#31994)

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Remove the type parameter from the layout DOM wrappers. This is possible
now that style and layout data are separate and the `Any` nature of the
layout data is exposed in the wrappers.

Removing the phantom data member of the wrappers also allows using the
default `derive` implementations for things like `Clone`, `Copy`, and
`PartialEq`.
This commit is contained in:
Martin Robinson 2024-04-04 13:34:35 +02:00 • committed by GitHub
parent df457c43c8
commit 24c3a2df1e
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GPG key ID: B5690EEEBB952194
6 changed files with 105 additions and 281 deletions
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41
components/script/layout_dom/shadow_root.rs
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@ -3,9 +3,7 @@
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use std::fmt;
use std::marker::PhantomData;
use script_layout_interface::wrapper_traits::LayoutDataTrait;
use style::dom::TShadowRoot;
use style::shared_lock::SharedRwLockReadGuard as StyleSharedRwLockReadGuard;
use style::stylist::{CascadeData, Stylist};
@ -14,44 +12,26 @@ use crate::dom::bindings::root::LayoutDom;
use crate::dom::shadowroot::{LayoutShadowRootHelpers, ShadowRoot};
use crate::layout_dom::{ServoLayoutElement, ServoLayoutNode};
pub struct ServoShadowRoot<'dom, LayoutDataType: LayoutDataTrait> {
#[derive(Clone, Copy, PartialEq)]
pub struct ServoShadowRoot<'dom> {
/// The wrapped private DOM ShadowRoot.
shadow_root: LayoutDom<'dom, ShadowRoot>,
/// A PhantomData that is used to track the type of the stored layout data.
phantom: PhantomData<LayoutDataType>,
}
impl<'dom, LayoutDataType: LayoutDataTrait> Clone for ServoShadowRoot<'dom, LayoutDataType> {
fn clone(&self) -> Self {
*self
}
}
impl<'dom, LayoutDataType: LayoutDataTrait> Copy for ServoShadowRoot<'dom, LayoutDataType> {}
impl<'a, LayoutDataType: LayoutDataTrait> PartialEq for ServoShadowRoot<'a, LayoutDataType> {
#[inline]
fn eq(&self, other: &Self) -> bool {
self.shadow_root == other.shadow_root
}
}
impl<'dom, LayoutDataType: LayoutDataTrait> fmt::Debug for ServoShadowRoot<'dom, LayoutDataType> {
impl<'dom> fmt::Debug for ServoShadowRoot<'dom> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
self.as_node().fmt(f)
}
}
impl<'dom, LayoutDataType: LayoutDataTrait> ::style::dom::TShadowRoot
for ServoShadowRoot<'dom, LayoutDataType>
{
type ConcreteNode = ServoLayoutNode<'dom, LayoutDataType>;
impl<'dom> TShadowRoot for ServoShadowRoot<'dom> {
type ConcreteNode = ServoLayoutNode<'dom>;
fn as_node(&self) -> Self::ConcreteNode {
ServoLayoutNode::from_layout_js(self.shadow_root.upcast())
}
fn host(&self) -> ServoLayoutElement<'dom, LayoutDataType> {
fn host(&self) -> ServoLayoutElement<'dom> {
ServoLayoutElement::from_layout_js(self.shadow_root.get_host_for_layout())
}
@ -63,12 +43,9 @@ impl<'dom, LayoutDataType: LayoutDataTrait> ::style::dom::TShadowRoot
}
}
impl<'dom, LayoutDataType: LayoutDataTrait> ServoShadowRoot<'dom, LayoutDataType> {
impl<'dom> ServoShadowRoot<'dom> {
pub(super) fn from_layout_js(shadow_root: LayoutDom<'dom, ShadowRoot>) -> Self {
ServoShadowRoot {
shadow_root,
phantom: PhantomData,
}
ServoShadowRoot { shadow_root }
}
pub unsafe fn flush_stylesheets(
@ -77,6 +54,6 @@ impl<'dom, LayoutDataType: LayoutDataTrait> ServoShadowRoot<'dom, LayoutDataType
guard: &StyleSharedRwLockReadGuard,
) {
self.shadow_root
.flush_stylesheets::<ServoLayoutElement<LayoutDataType>>(stylist, guard)
.flush_stylesheets::<ServoLayoutElement>(stylist, guard)
}
}