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LibJS+LibWeb: Return Vector<PropertyKey> from internal_own_property_keys

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By doing that we avoid lots of `PropertyKey` -> `Value` -> `PropertyKey`
transforms, which are quite expensive because of underlying
`FlyString` -> `PrimitiveString` -> `FlyString` conversions.

10% improvement on MicroBench/object-keys.js
This commit is contained in:
Aliaksandr Kalenik 2025-05-14 15:39:48 +03:00 • committed by Alexander Kalenik
parent 47569c1714
commit 5ee810f772
Notes: github-actions[bot] 2025-05-15 18:13:23 +00:00
24 changed files with 134 additions and 155 deletions
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8
Libraries/LibWeb/HTML/Location.cpp
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@ -36,7 +36,6 @@ Location::~Location() = default;
void Location::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_default_properties);
}
// https://html.spec.whatwg.org/multipage/nav-history-apis.html#the-location-interface
@ -623,10 +622,7 @@ JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> Location::internal_get_o
// 2. If the value of the [[DefaultProperties]] internal slot of this contains P, then set desc.[[Configurable]] to true.
// FIXME: This doesn't align with what the other browsers do. Spec issue: https://github.com/whatwg/html/issues/4157
auto property_key_value = property_key.is_symbol()
? JS::Value { property_key.as_symbol() }
: JS::PrimitiveString::create(vm, property_key.to_string());
if (m_default_properties.contains_slow(property_key_value))
if (m_default_properties.contains_slow(property_key))
descriptor->configurable = true;
// 3. Return desc.
@ -696,7 +692,7 @@ JS::ThrowCompletionOr<bool> Location::internal_delete(JS::PropertyKey const& pro
}
// 7.10.5.10 [[OwnPropertyKeys]] ( ), https://html.spec.whatwg.org/multipage/history.html#location-ownpropertykeys
JS::ThrowCompletionOr<GC::RootVector<JS::Value>> Location::internal_own_property_keys() const
JS::ThrowCompletionOr<Vector<JS::PropertyKey>> Location::internal_own_property_keys() const
{
// 1. If IsPlatformObjectSameOrigin(this) is true, then return OrdinaryOwnPropertyKeys(this).
if (HTML::is_platform_object_same_origin(*this))