servo/components/script/dom/raredata.rs
Samson 9514f670d1
No tracing of nop traceable fields (#29926)
* Add `no_trace` option to JSTraceable derive

* NoTrace wrapper

* Port some types to no_trace schematics

* Fixing my unsafe mistakes (not tracing traceables)

* Add docs & safety guards for no_trace

Safety guards (trait shenanigans) guarantees safety usage of `no_trace`

* Port canvas_traits to no_trace

* Port servo_media to no_trace

* Port net_traits to no_trace

* Port style to no_trace

* Port webgpu to no_trace

* Port script_traits to no_trace

* Port canvas_traits, devtools_traits, embedder_traits, profile_traits to no_trace

* unrooted_must_root lint in seperate file

* Add trace_in_no_trace_lint as script_plugin

* Composable types in must_not_have_traceable

* Introduced HashMapTracedValues wrapper

* `HashMap<NoTrace<K>,V>`->`HashMapTracedValues<K,V>`

* Port rest of servo's types to no_trace

* Port html5ever, euclid, mime and http to no_trace

* Port remaining externals to no_trace

* Port webxr and Arc<Mutex<_>>

* Fix spelling in notrace doc
2023-08-04 10:17:43 +00:00

55 lines
2.3 KiB
Rust

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
use crate::dom::bindings::root::Dom;
use crate::dom::customelementregistry::{
CustomElementDefinition, CustomElementReaction, CustomElementState,
};
use crate::dom::mutationobserver::RegisteredObserver;
use crate::dom::node::UniqueId;
use crate::dom::shadowroot::ShadowRoot;
use crate::dom::window::LayoutValue;
use euclid::default::Rect;
use servo_atoms::Atom;
use std::rc::Rc;
//XXX(ferjm) Ideally merge NodeRareData and ElementRareData so they share
// storage.
#[derive(Default, JSTraceable, MallocSizeOf)]
#[unrooted_must_root_lint::must_root]
pub struct NodeRareData {
/// The shadow root the node belongs to.
/// This is None if the node is not in a shadow tree or
/// if it is a ShadowRoot.
pub containing_shadow_root: Option<Dom<ShadowRoot>>,
/// Registered observers for this node.
pub mutation_observers: Vec<RegisteredObserver>,
/// Lazily-generated Unique Id for this node.
pub unique_id: Option<UniqueId>,
}
#[derive(Default, JSTraceable, MallocSizeOf)]
#[unrooted_must_root_lint::must_root]
pub struct ElementRareData {
/// https://dom.spec.whatwg.org/#dom-element-shadowroot
/// The ShadowRoot this element is host of.
/// XXX This is currently not exposed to web content. Only for
/// internal use.
pub shadow_root: Option<Dom<ShadowRoot>>,
/// <https://html.spec.whatwg.org/multipage/#custom-element-reaction-queue>
pub custom_element_reaction_queue: Vec<CustomElementReaction>,
/// <https://dom.spec.whatwg.org/#concept-element-custom-element-definition>
#[ignore_malloc_size_of = "Rc"]
pub custom_element_definition: Option<Rc<CustomElementDefinition>>,
/// <https://dom.spec.whatwg.org/#concept-element-custom-element-state>
pub custom_element_state: CustomElementState,
/// The "name" content attribute; not used as frequently as id, but used
/// in named getter loops so it's worth looking up quickly when present
#[no_trace]
pub name_attribute: Option<Atom>,
/// The client rect reported by layout.
#[no_trace]
pub client_rect: Option<LayoutValue<Rect<i32>>>,
}