fergalmoran/ladybird
1
0
Fork 0
mirror of https://github.com/fergalmoran/ladybird.git synced 2025-12-24 02:09:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

LibWeb: Make HTMLCollection faster when it only cares about children

Browse Source 
Some of the live HTMLCollection only ever contain children of their root
node. When we know that's the case, we can avoid doing a full subtree
traversal of all descendants and only visit children.

This cuts the ECMA262 spec loading time by over 10 seconds. :^)
This commit is contained in:
Andreas Kling
2023-05-23 11:25:07 +02:00
parent e31f696ee6
commit df1bb0ff49
10 changed files with 54 additions and 41 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
Userland/Libraries/LibWeb/HTML/HTMLTableElement.cpp
View File

@@ -264,7 +264,7 @@ JS::NonnullGCPtr<DOM::HTMLCollection> HTMLTableElement::t_bodies()
// The tBodies attribute must return an HTMLCollection rooted at the table node,
// whose filter matches only tbody elements that are children of the table element.
if (!m_t_bodies) {
m_t_bodies = DOM::HTMLCollection::create(*this, [](DOM::Element const& element) {
m_t_bodies = DOM::HTMLCollection::create(*this, DOM::HTMLCollection::Scope::Children, [](DOM::Element const& element) {
return element.local_name() == TagNames::tbody;
}).release_value_but_fixme_should_propagate_errors();
}
@@ -307,7 +307,7 @@ JS::NonnullGCPtr<DOM::HTMLCollection> HTMLTableElement::rows()
// How do you sort HTMLCollection?
if (!m_rows) {
m_rows = DOM::HTMLCollection::create(*this, [table_node](DOM::Element const& element) {
m_rows = DOM::HTMLCollection::create(*this, DOM::HTMLCollection::Scope::Descendants, [table_node](DOM::Element const& element) {
// Only match TR elements which are:
// * children of the table element
// * children of the thead, tbody, or tfoot elements that are themselves children of the table element