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a9ddd427cb
The main streams AO file has gotten very large, and is a bit difficult to navigate. In an effort to improve DX, this migrates ReadableStream AOs to their own file. And the helper classes used for the tee and pipe- to operations are also in their own files.
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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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(ReadableStreamBYOBRequest);
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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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