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servo: Merge #7611 - Cache the id
attribute on Element (from nox:cache-element-id); r=frewsxcv
Thanks to @asabil for the original work, I only rebased it. Fixes #6359 and #7040. Source-Repo: https://github.com/servo/servo Source-Revision: d1269294e6c602c91012397c7584e3c2077e21ac
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@ -487,7 +487,7 @@ impl<'le> ::selectors::Element for LayoutElement<'le> {
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#[inline]
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fn get_id(&self) -> Option<Atom> {
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unsafe {
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(*self.element.unsafe_get()).get_attr_atom_for_layout(&ns!(""), &atom!("id"))
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(*self.element.id_attribute()).clone()
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}
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}
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@ -70,7 +70,7 @@ use selectors::parser::{AttrSelector, NamespaceConstraint};
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use smallvec::VecLike;
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use std::ascii::AsciiExt;
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use std::borrow::{Cow, ToOwned};
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use std::cell::{Ref, RefMut};
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use std::cell::Ref;
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use std::default::Default;
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use std::mem;
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use std::sync::Arc;
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@ -92,6 +92,7 @@ pub struct Element {
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namespace: Namespace,
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prefix: Option<DOMString>,
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attrs: DOMRefCell<Vec<JS<Attr>>>,
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id_attribute: DOMRefCell<Option<Atom>>,
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style_attribute: DOMRefCell<Option<PropertyDeclarationBlock>>,
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attr_list: MutNullableHeap<JS<NamedNodeMap>>,
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class_list: MutNullableHeap<JS<DOMTokenList>>,
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@ -146,6 +147,7 @@ impl Element {
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attrs: DOMRefCell::new(vec!()),
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attr_list: Default::default(),
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class_list: Default::default(),
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id_attribute: DOMRefCell::new(None),
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style_attribute: DOMRefCell::new(None),
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}
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}
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@ -505,6 +507,7 @@ pub trait LayoutElementHelpers {
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unsafe fn html_element_in_html_document_for_layout(&self) -> bool;
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#[allow(unsafe_code)]
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unsafe fn has_attr_for_layout(&self, namespace: &Namespace, name: &Atom) -> bool;
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fn id_attribute(&self) -> *const Option<Atom>;
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fn style_attribute(&self) -> *const Option<PropertyDeclarationBlock>;
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fn local_name(&self) -> &Atom;
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fn namespace(&self) -> &Namespace;
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@ -528,6 +531,13 @@ impl LayoutElementHelpers for LayoutJS<Element> {
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get_attr_for_layout(&*self.unsafe_get(), namespace, name).is_some()
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}
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#[allow(unsafe_code)]
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fn id_attribute(&self) -> *const Option<Atom> {
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unsafe {
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(*self.unsafe_get()).id_attribute.borrow_for_layout()
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}
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}
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#[allow(unsafe_code)]
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fn style_attribute(&self) -> *const Option<PropertyDeclarationBlock> {
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unsafe {
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@ -610,10 +620,6 @@ impl Element {
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self.attrs.borrow()
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}
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pub fn attrs_mut(&self) -> RefMut<Vec<JS<Attr>>> {
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self.attrs.borrow_mut()
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}
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pub fn style_attribute(&self) -> &DOMRefCell<Option<PropertyDeclarationBlock>> {
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&self.style_attribute
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}
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@ -1484,6 +1490,15 @@ impl VirtualMethods for Element {
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NodeDamage::NodeStyleDamaged
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},
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&atom!(id) => {
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*self.id_attribute.borrow_mut() =
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mutation.new_value(attr).and_then(|value| {
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let value = value.as_atom();
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if value != &atom!("") {
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Some(value.clone())
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} else {
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None
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}
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});
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if node.is_in_doc() {
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let value = attr.value().as_atom().clone();
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match mutation {
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@ -1530,13 +1545,9 @@ impl VirtualMethods for Element {
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if !tree_in_doc { return; }
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if let Some(ref attr) = self.get_attribute(&ns!(""), &atom!("id")) {
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let value = attr.value();
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if !value.is_empty() {
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if let Some(ref value) = *self.id_attribute.borrow() {
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let doc = document_from_node(self);
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let value = Atom::from_slice(&value);
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doc.register_named_element(self, value.to_owned());
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}
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doc.register_named_element(self, value.clone());
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}
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}
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@ -1547,13 +1558,9 @@ impl VirtualMethods for Element {
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if !tree_in_doc { return; }
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if let Some(ref attr) = self.get_attribute(&ns!(""), &atom!("id")) {
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let value = attr.value();
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if !value.is_empty() {
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if let Some(ref value) = *self.id_attribute.borrow() {
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let doc = document_from_node(self);
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let value = Atom::from_slice(&value);
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doc.unregister_named_element(self, value.to_owned());
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}
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doc.unregister_named_element(self, value.clone());
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}
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}
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}
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@ -1639,12 +1646,7 @@ impl<'a> ::selectors::Element for Root<Element> {
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node.get_focus_state()
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}
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fn get_id(&self) -> Option<Atom> {
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self.get_attribute(&ns!(""), &atom!("id")).map(|attr| {
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match *attr.r().value() {
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AttrValue::Atom(ref val) => val.clone(),
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_ => panic!("`id` attribute should be AttrValue::Atom"),
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}
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})
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self.id_attribute.borrow().clone()
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}
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fn get_disabled_state(&self) -> bool {
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let node = NodeCast::from_ref(&**self);
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@ -811,18 +811,17 @@ impl Node {
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Err(()) => Err(Syntax),
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// Step 3.
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Ok(ref selectors) => {
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let root = self.ancestors().last();
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let root = root.r().unwrap_or(self.clone());
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Ok(root.traverse_preorder().filter_map(ElementCast::to_root).find(|element| {
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Ok(self.traverse_preorder().filter_map(ElementCast::to_root).find(|element| {
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matches(selectors, element, None)
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}))
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}
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}
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}
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/// https://dom.spec.whatwg.org/#scope-match-a-selectors-string
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/// Get an iterator over all nodes which match a set of selectors
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/// Be careful not to do anything which may manipulate the DOM tree whilst iterating, otherwise
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/// the iterator may be invalidated
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/// Be careful not to do anything which may manipulate the DOM tree
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/// whilst iterating, otherwise the iterator may be invalidated.
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#[allow(unsafe_code)]
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pub unsafe fn query_selector_iter(&self, selectors: DOMString)
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-> Fallible<QuerySelectorIterator> {
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@ -832,9 +831,7 @@ impl Node {
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Err(()) => Err(Syntax),
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// Step 3.
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Ok(selectors) => {
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let root = self.ancestors().last();
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let root = root.r().unwrap_or(self);
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Ok(QuerySelectorIterator::new(root.traverse_preorder(), selectors))
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Ok(QuerySelectorIterator::new(self.traverse_preorder(), selectors))
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}
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}
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}
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@ -1767,15 +1764,12 @@ impl Node {
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let node_elem = ElementCast::to_ref(node).unwrap();
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let copy_elem = ElementCast::to_ref(copy.r()).unwrap();
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let window = document.r().window();
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for ref attr in &*node_elem.attrs() {
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let attr = attr.root();
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let newattr =
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Attr::new(window.r(),
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attr.r().local_name().clone(), attr.r().value().clone(),
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attr.r().name().clone(), attr.r().namespace().clone(),
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attr.r().prefix().clone(), Some(copy_elem));
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copy_elem.attrs_mut().push(JS::from_rooted(&newattr));
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for attr in node_elem.attrs().iter().map(JS::root) {
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copy_elem.push_new_attribute(attr.local_name().clone(),
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attr.value().clone(),
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attr.name().clone(),
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attr.namespace().clone(),
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attr.prefix().clone());
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}
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},
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_ => ()
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@ -39,9 +39,9 @@ macro_rules! sizeof_checker (
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// Update the sizes here
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sizeof_checker!(size_event_target, EventTarget, 40);
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sizeof_checker!(size_node, Node, 168);
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sizeof_checker!(size_element, Element, 280);
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sizeof_checker!(size_htmlelement, HTMLElement, 296);
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sizeof_checker!(size_div, HTMLDivElement, 296);
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sizeof_checker!(size_span, HTMLSpanElement, 296);
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sizeof_checker!(size_element, Element, 304);
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sizeof_checker!(size_htmlelement, HTMLElement, 320);
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sizeof_checker!(size_div, HTMLDivElement, 320);
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sizeof_checker!(size_span, HTMLSpanElement, 320);
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sizeof_checker!(size_text, Text, 200);
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sizeof_checker!(size_characterdata, CharacterData, 200);
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