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Skip the root node in live HTMLCollections.

Browse source 
The root node is never included in the collection, and omitting it here
simplifies and speeds up the filter implementations.
This commit is contained in:
Ms2ger 2014-12-13 10:38:17 +01:00
parent 4a2c4b65cc
commit 14e1455119
2 changed files with 11 additions and 20 deletions
Download patch file Download diff file Expand all files Collapse all files

24
components/script/dom/htmlcollection.rs
View file

@ -16,7 +16,7 @@ use servo_util::namespace;
use servo_util::str::{DOMString, split_html_space_chars};
use std::ascii::AsciiExt;
use std::iter::FilterMap;
use std::iter::{FilterMap, Skip};
use string_cache::{Atom, Namespace};
pub trait CollectionFilter : JSTraceable {
@ -63,10 +63,7 @@ impl HTMLCollection {
namespace_filter: Option<Namespace>
}
impl CollectionFilter for AllElementFilter {
fn filter(&self, elem: JSRef<Element>, root: JSRef<Node>) -> bool {
if NodeCast::from_ref(elem) == root {
return false
}
fn filter(&self, elem: JSRef<Element>, _root: JSRef<Node>) -> bool {
match self.namespace_filter {
None => true,
Some(ref namespace) => *elem.namespace() == *namespace
@ -89,10 +86,7 @@ impl HTMLCollection {
ascii_lower_tag: Atom,
}
impl CollectionFilter for TagNameFilter {
fn filter(&self, elem: JSRef<Element>, root: JSRef<Node>) -> bool {
if NodeCast::from_ref(elem) == root {
return false
}
fn filter(&self, elem: JSRef<Element>, _root: JSRef<Node>) -> bool {
if elem.html_element_in_html_document() {
*elem.local_name() == self.ascii_lower_tag
} else {
@ -123,10 +117,7 @@ impl HTMLCollection {
namespace_filter: Option<Namespace>
}
impl CollectionFilter for TagNameNSFilter {
fn filter(&self, elem: JSRef<Element>, root: JSRef<Node>) -> bool {
if NodeCast::from_ref(elem) == root {
return false
}
fn filter(&self, elem: JSRef<Element>, _root: JSRef<Node>) -> bool {
let ns_match = match self.namespace_filter {
Some(ref namespace) => {
*elem.namespace() == *namespace
@ -150,8 +141,8 @@ impl HTMLCollection {
classes: Vec<Atom>
}
impl CollectionFilter for ClassNameFilter {
fn filter(&self, elem: JSRef<Element>, root: JSRef<Node>) -> bool {
(NodeCast::from_ref(elem) != root) && self.classes.iter().all(|class| elem.has_class(class))
fn filter(&self, elem: JSRef<Element>, _root: JSRef<Node>) -> bool {
self.classes.iter().all(|class| elem.has_class(class))
}
}
let filter = ClassNameFilter {
@ -176,8 +167,9 @@ impl HTMLCollection {
fn traverse<'a>(root: JSRef<'a, Node>)
-> FilterMap<'a, JSRef<'a, Node>,
JSRef<'a, Element>,
TreeIterator<'a>> {
Skip<TreeIterator<'a>>> {
root.traverse_preorder()
.skip(1)
.filter_map(ElementCast::to_ref)
}
}

7
components/script/dom/htmlfieldsetelement.rs
View file

@ -6,7 +6,7 @@ use dom::attr::Attr;
use dom::attr::AttrHelpers;
use dom::bindings::codegen::Bindings::HTMLFieldSetElementBinding;
use dom::bindings::codegen::Bindings::HTMLFieldSetElementBinding::HTMLFieldSetElementMethods;
use dom::bindings::codegen::InheritTypes::{ElementCast, HTMLFieldSetElementDerived, NodeCast};
use dom::bindings::codegen::InheritTypes::{HTMLFieldSetElementDerived, NodeCast};
use dom::bindings::codegen::InheritTypes::{HTMLElementCast, HTMLLegendElementDerived};
use dom::bindings::js::{JSRef, Temporary};
use dom::bindings::utils::{Reflectable, Reflector};
@ -54,11 +54,10 @@ impl<'a> HTMLFieldSetElementMethods for JSRef<'a, HTMLFieldSetElement> {
#[jstraceable]
struct ElementsFilter;
impl CollectionFilter for ElementsFilter {
fn filter<'a>(&self, elem: JSRef<'a, Element>, root: JSRef<'a, Node>) -> bool {
fn filter<'a>(&self, elem: JSRef<'a, Element>, _root: JSRef<'a, Node>) -> bool {
static TAG_NAMES: StaticStringVec = &["button", "fieldset", "input",
"keygen", "object", "output", "select", "textarea"];
let root: JSRef<Element> = ElementCast::to_ref(root).unwrap();
elem != root && TAG_NAMES.iter().any(|&tag_name| tag_name == elem.local_name().as_slice())
TAG_NAMES.iter().any(|&tag_name| tag_name == elem.local_name().as_slice())
}
}
let node: JSRef<Node> = NodeCast::from_ref(self);