ladybird/Userland/Libraries/LibWeb/PerformanceTimeline/PerformanceObserverEntryList.cpp
Andreas Kling c0d7f748ed LibWeb: Avoid FlyString lookups when setting IDL interface prototypes
This commit introduces a WEB_SET_PROTOTYPE_FOR_INTERFACE macro that
caches the interface name in a local static FlyString. This means that
we only pay for FlyString-from-literal lookup once per browser lifetime
instead of every time the interface is instantiated.
2024-03-16 16:35:54 +01:00

94 lines
4.1 KiB
C++

/*
* Copyright (c) 2023, Luke Wilde <lukew@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/QuickSort.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/PerformanceObserverEntryListPrototype.h>
#include <LibWeb/PerformanceTimeline/PerformanceEntry.h>
#include <LibWeb/PerformanceTimeline/PerformanceObserverEntryList.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::PerformanceTimeline {
JS_DEFINE_ALLOCATOR(PerformanceObserverEntryList);
PerformanceObserverEntryList::PerformanceObserverEntryList(JS::Realm& realm, Vector<JS::NonnullGCPtr<PerformanceTimeline::PerformanceEntry>>&& entry_list)
: Bindings::PlatformObject(realm)
, m_entry_list(move(entry_list))
{
}
PerformanceObserverEntryList::~PerformanceObserverEntryList() = default;
void PerformanceObserverEntryList::initialize(JS::Realm& realm)
{
Base::initialize(realm);
WEB_SET_PROTOTYPE_FOR_INTERFACE(PerformanceObserverEntryList);
}
void PerformanceObserverEntryList::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
for (auto& entry : m_entry_list)
visitor.visit(entry);
}
// https://www.w3.org/TR/performance-timeline/#dfn-filter-buffer-by-name-and-type
ErrorOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> filter_buffer_by_name_and_type(Vector<JS::NonnullGCPtr<PerformanceTimeline::PerformanceEntry>> const& buffer, Optional<String> name, Optional<String> type)
{
// 1. Let result be an initially empty list.
Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>> result;
// 2. For each PerformanceEntry entry in buffer, run the following steps:
for (auto const& entry : buffer) {
// 1. If type is not null and if type is not identical to entry's entryType attribute, continue to next entry.
if (type.has_value() && type.value() != entry->entry_type())
continue;
// 2. If name is not null and if name is not identical to entry's name attribute, continue to next entry.
if (name.has_value() && name.value() != entry->name())
continue;
// 3. append entry to result.
TRY(result.try_append(entry));
}
// 3. Sort results's entries in chronological order with respect to startTime
quick_sort(result, [](auto const& left_entry, auto const& right_entry) {
return left_entry->start_time() < right_entry->start_time();
});
// 4. Return result.
return result;
}
// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentries
WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries() const
{
// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
// name and type set to null.
return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, /* name= */ Optional<String> {}, /* type= */ Optional<String> {}));
}
// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentriesbytype
WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries_by_type(String const& type) const
{
// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
// name set to null, and type set to the method's input type parameter.
return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, /* name= */ Optional<String> {}, type));
}
// https://w3c.github.io/performance-timeline/#dom-performanceobserverentrylist-getentriesbyname
WebIDL::ExceptionOr<Vector<JS::Handle<PerformanceTimeline::PerformanceEntry>>> PerformanceObserverEntryList::get_entries_by_name(String const& name, Optional<String> type) const
{
// Returns a PerformanceEntryList object returned by filter buffer by name and type algorithm with this's entry list,
// name set to the method input name parameter, and type set to null if optional entryType is omitted, or set to the
// method's input type parameter otherwise.
return TRY_OR_THROW_OOM(vm(), filter_buffer_by_name_and_type(m_entry_list, name, type));
}
}