ladybird/Libraries/LibWeb/Bindings/Intrinsics.h
Andreas Kling a6dfc74e93 LibWeb: Only set prototype once for object with IDL interface
Before this change, we were going through the chain of base classes for
each IDL interface object and having them set the prototype to their
prototype.

Instead of doing that, reorder things so that we set the right prototype
immediately in Foo::initialize(), and then don't bother in all the base
class overrides.

This knocks off a ~1% profile item on Speedometer 3.
2025-04-20 18:43:11 +02:00

106 lines
3.6 KiB
C++

/*
* Copyright (c) 2022, Andrew Kaster <akaster@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/FlyString.h>
#include <AK/Forward.h>
#include <AK/HashMap.h>
#include <LibGC/Heap.h>
#include <LibJS/Forward.h>
#include <LibJS/Heap/Cell.h>
#include <LibJS/Runtime/VM.h>
#define WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(interface_class, interface_name) \
do { \
static auto name = #interface_name##_fly_string; \
if (!shape().prototype()) { \
set_prototype(&Bindings::ensure_web_prototype<Bindings::interface_class##Prototype>(realm, name)); \
} \
} while (0)
#define WEB_SET_PROTOTYPE_FOR_INTERFACE(interface_name) WEB_SET_PROTOTYPE_FOR_INTERFACE_WITH_CUSTOM_NAME(interface_name, interface_name)
namespace Web::Bindings {
class Intrinsics final : public JS::Cell {
GC_CELL(Intrinsics, JS::Cell);
GC_DECLARE_ALLOCATOR(Intrinsics);
public:
Intrinsics(JS::Realm& realm)
: m_realm(realm)
{
}
template<typename NamespaceType>
JS::Object& ensure_web_namespace(FlyString const& namespace_name)
{
if (auto it = m_namespaces.find(namespace_name); it != m_namespaces.end())
return *it->value;
create_web_namespace<NamespaceType>(*m_realm);
return *m_namespaces.find(namespace_name)->value;
}
template<typename PrototypeType>
JS::Object& ensure_web_prototype(FlyString const& class_name)
{
if (auto it = m_prototypes.find(class_name); it != m_prototypes.end())
return *it->value;
create_web_prototype_and_constructor<PrototypeType>(*m_realm);
return *m_prototypes.find(class_name)->value;
}
template<typename PrototypeType>
JS::NativeFunction& ensure_web_constructor(FlyString const& class_name)
{
if (auto it = m_constructors.find(class_name); it != m_constructors.end())
return *it->value;
create_web_prototype_and_constructor<PrototypeType>(*m_realm);
return *m_constructors.find(class_name)->value;
}
bool is_exposed(StringView name) const;
private:
virtual void visit_edges(JS::Cell::Visitor&) override;
template<typename NamespaceType>
void create_web_namespace(JS::Realm& realm);
template<typename PrototypeType>
void create_web_prototype_and_constructor(JS::Realm& realm);
HashMap<FlyString, GC::Ref<JS::Object>> m_namespaces;
HashMap<FlyString, GC::Ref<JS::Object>> m_prototypes;
HashMap<FlyString, GC::Ptr<JS::NativeFunction>> m_constructors;
GC::Ref<JS::Realm> m_realm;
};
Intrinsics& host_defined_intrinsics(JS::Realm& realm);
template<typename T>
[[nodiscard]] JS::Object& ensure_web_namespace(JS::Realm& realm, FlyString const& namespace_name)
{
return host_defined_intrinsics(realm).ensure_web_namespace<T>(namespace_name);
}
template<typename T>
[[nodiscard]] JS::Object& ensure_web_prototype(JS::Realm& realm, FlyString const& class_name)
{
return host_defined_intrinsics(realm).ensure_web_prototype<T>(class_name);
}
template<typename T>
[[nodiscard]] JS::NativeFunction& ensure_web_constructor(JS::Realm& realm, FlyString const& class_name)
{
return host_defined_intrinsics(realm).ensure_web_constructor<T>(class_name);
}
}