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d45f8a3081
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We already had IC support in PutById for the following cases:
- Changing an existing own property
- Calling a setter located in the prototype chain
This was enough to speed up code where structurally identical objects
(same shape) are processed in a loop:
```js
const arr = [{ a: 1 }, { a: 2 }, { a: 3 }];
for (let obj of arr) {
obj.a += 1;
}
```
However, creating structurally identical objects in a loop was still
slow:
```js
for (let i = 0; i < 10_000_000; i++) {
const o = {};
o.a = 1;
o.b = 2;
o.c = 3;
}
```
This change addresses that by adding a new IC type that caches both the
source and target shapes, allowing property additions to be fast-pathed
by directly jumping to the shape that already includes the new property.
93 lines
4 KiB
C++
93 lines
4 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
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* Copyright (c) 2022-2023, Linus Groh <linusg@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <LibJS/Forward.h>
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#include <LibJS/Runtime/Completion.h>
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#include <LibURL/URL.h>
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#include <LibWeb/Bindings/PlatformObject.h>
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#include <LibWeb/Forward.h>
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#include <LibWeb/HTML/CrossOrigin/CrossOriginPropertyDescriptorMap.h>
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#include <LibWeb/HTML/Navigable.h>
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namespace Web::HTML {
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class Location final : public Bindings::PlatformObject {
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WEB_PLATFORM_OBJECT(Location, Bindings::PlatformObject);
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GC_DECLARE_ALLOCATOR(Location);
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public:
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virtual ~Location() override;
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WebIDL::ExceptionOr<String> href() const;
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WebIDL::ExceptionOr<void> set_href(String const&);
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WebIDL::ExceptionOr<String> origin() const;
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WebIDL::ExceptionOr<String> protocol() const;
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WebIDL::ExceptionOr<void> set_protocol(String const&);
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WebIDL::ExceptionOr<String> host() const;
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WebIDL::ExceptionOr<void> set_host(String const&);
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WebIDL::ExceptionOr<String> hostname() const;
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WebIDL::ExceptionOr<void> set_hostname(String const&);
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WebIDL::ExceptionOr<String> port() const;
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WebIDL::ExceptionOr<void> set_port(String const&);
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WebIDL::ExceptionOr<String> pathname() const;
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WebIDL::ExceptionOr<void> set_pathname(String const&);
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WebIDL::ExceptionOr<String> search() const;
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WebIDL::ExceptionOr<void> set_search(String const&);
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WebIDL::ExceptionOr<String> hash() const;
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WebIDL::ExceptionOr<void> set_hash(StringView);
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WebIDL::ExceptionOr<void> replace(String const& url);
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void reload() const;
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WebIDL::ExceptionOr<void> assign(String const& url);
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virtual JS::ThrowCompletionOr<JS::Object*> internal_get_prototype_of() const override;
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virtual JS::ThrowCompletionOr<bool> internal_set_prototype_of(Object* prototype) override;
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virtual JS::ThrowCompletionOr<bool> internal_is_extensible() const override;
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virtual JS::ThrowCompletionOr<bool> internal_prevent_extensions() override;
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virtual JS::ThrowCompletionOr<Optional<JS::PropertyDescriptor>> internal_get_own_property(JS::PropertyKey const&) const override;
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virtual JS::ThrowCompletionOr<bool> internal_define_own_property(JS::PropertyKey const&, JS::PropertyDescriptor&, Optional<JS::PropertyDescriptor>* precomputed_get_own_property = nullptr) override;
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virtual JS::ThrowCompletionOr<JS::Value> internal_get(JS::PropertyKey const&, JS::Value receiver, JS::CacheableGetPropertyMetadata*, PropertyLookupPhase) const override;
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virtual JS::ThrowCompletionOr<bool> internal_set(JS::PropertyKey const&, JS::Value value, JS::Value receiver, JS::CacheableSetPropertyMetadata*, PropertyLookupPhase) override;
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virtual JS::ThrowCompletionOr<bool> internal_delete(JS::PropertyKey const&) override;
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virtual JS::ThrowCompletionOr<GC::RootVector<JS::Value>> internal_own_property_keys() const override;
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HTML::CrossOriginPropertyDescriptorMap const& cross_origin_property_descriptor_map() const { return m_cross_origin_property_descriptor_map; }
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HTML::CrossOriginPropertyDescriptorMap& cross_origin_property_descriptor_map() { return m_cross_origin_property_descriptor_map; }
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private:
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explicit Location(JS::Realm&);
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virtual bool is_html_location() const override { return true; }
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virtual void initialize(JS::Realm&) override;
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virtual void visit_edges(Cell::Visitor&) override;
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GC::Ptr<DOM::Document> relevant_document() const;
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URL::URL url() const;
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WebIDL::ExceptionOr<void> navigate(URL::URL, Bindings::NavigationHistoryBehavior = Bindings::NavigationHistoryBehavior::Auto);
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// [[CrossOriginPropertyDescriptorMap]], https://html.spec.whatwg.org/multipage/browsers.html#crossoriginpropertydescriptormap
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HTML::CrossOriginPropertyDescriptorMap m_cross_origin_property_descriptor_map;
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// [[DefaultProperties]], https://html.spec.whatwg.org/multipage/history.html#defaultproperties
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Vector<JS::Value> m_default_properties;
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};
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}
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template<>
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inline bool JS::Object::fast_is<Web::HTML::Location>() const { return is_html_location(); }
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