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https://github.com/LadybirdBrowser/ladybird.git
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a6dfc74e93
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.
83 lines
3.2 KiB
C++
83 lines
3.2 KiB
C++
/*
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* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
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* Copyright (c) 2023, Shannon Booth <shannon@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibJS/Runtime/TypedArray.h>
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#include <LibWeb/Bindings/Intrinsics.h>
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#include <LibWeb/Bindings/ReadableStreamBYOBRequestPrototype.h>
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#include <LibWeb/Streams/ReadableByteStreamController.h>
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#include <LibWeb/Streams/ReadableStreamBYOBRequest.h>
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#include <LibWeb/Streams/ReadableStreamOperations.h>
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#include <LibWeb/WebIDL/Buffers.h>
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namespace Web::Streams {
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GC_DEFINE_ALLOCATOR(ReadableStreamBYOBRequest);
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// https://streams.spec.whatwg.org/#rs-byob-request-view
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GC::Ptr<WebIDL::ArrayBufferView> ReadableStreamBYOBRequest::view()
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{
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// 1. Return this.[[view]].
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return m_view;
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}
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ReadableStreamBYOBRequest::ReadableStreamBYOBRequest(JS::Realm& realm)
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: Bindings::PlatformObject(realm)
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{
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}
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void ReadableStreamBYOBRequest::initialize(JS::Realm& realm)
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{
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamBYOBRequest);
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Base::initialize(realm);
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}
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void ReadableStreamBYOBRequest::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_controller);
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visitor.visit(m_view);
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}
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// https://streams.spec.whatwg.org/#rs-byob-request-respond
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WebIDL::ExceptionOr<void> ReadableStreamBYOBRequest::respond(WebIDL::UnsignedLongLong bytes_written)
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{
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// 1. If this.[[controller]] is undefined, throw a TypeError exception.
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if (!m_controller)
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Controller is undefined"_string };
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// 2. If ! IsDetachedBuffer(this.[[view]].[[ArrayBuffer]]) is true, throw a TypeError exception.
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if (m_view->viewed_array_buffer()->is_detached())
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Unable to respond to detached ArrayBuffer"_string };
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// 3. Assert: this.[[view]].[[ByteLength]] > 0.
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VERIFY(m_view->viewed_array_buffer()->byte_length() > 0);
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// 4. Assert: this.[[view]].[[ViewedArrayBuffer]].[[ByteLength]] > 0.
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VERIFY(m_view->viewed_array_buffer()->byte_length() > 0);
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// 5. Perform ? ReadableByteStreamControllerRespond(this.[[controller]], bytesWritten).
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return readable_byte_stream_controller_respond(*m_controller, bytes_written);
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}
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// https://streams.spec.whatwg.org/#rs-byob-request-respond-with-new-view
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WebIDL::ExceptionOr<void> ReadableStreamBYOBRequest::respond_with_new_view(GC::Root<WebIDL::ArrayBufferView> const& view)
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{
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auto& realm = this->realm();
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// 1. If this.[[controller]] is undefined, throw a TypeError exception.
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if (!m_controller)
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Controller is undefined"_string };
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// 2. If ! IsDetachedBuffer(view.[[ViewedArrayBuffer]]) is true, throw a TypeError exception.
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if (view->viewed_array_buffer()->is_detached())
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return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Unable to respond with a detached ArrayBuffer"_string };
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// 3. Return ? ReadableByteStreamControllerRespondWithNewView(this.[[controller]], view).
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return TRY(readable_byte_stream_controller_respond_with_new_view(realm, *m_controller, *view));
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}
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}
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