57 lines
1.8 KiB
C++
57 lines
1.8 KiB
C++
/*
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* Copyright (c) 2023, Matthew Olsson <mattco@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 <LibWeb/Streams/ReadableByteStreamController.h>
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#include <LibWeb/Streams/ReadableStream.h>
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#include <LibWeb/Streams/ReadableStreamBYOBRequest.h>
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namespace Web::Streams {
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// https://streams.spec.whatwg.org/#rbs-controller-desired-size
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Optional<double> ReadableByteStreamController::desired_size() const
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{
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// 1. Return ! ReadableByteStreamControllerGetDesiredSize(this).
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return readable_byte_stream_controller_get_desired_size(*this);
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}
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ReadableByteStreamController::ReadableByteStreamController(JS::Realm& realm)
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: Bindings::PlatformObject(realm)
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{
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}
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// https://streams.spec.whatwg.org/#rbs-controller-private-cancel
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WebIDL::ExceptionOr<JS::GCPtr<WebIDL::Promise>> ReadableByteStreamController::cancel_steps(JS::Value reason)
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{
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// 1. Perform ! ReadableByteStreamControllerClearPendingPullIntos(this).
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readable_byte_stream_controller_clear_pending_pull_intos(*this);
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// 2. Perform ! ResetQueue(this).
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reset_queue(*this);
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// 3. Let result be the result of performing this.[[cancelAlgorithm]], passing in reason.
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auto result = (*m_cancel_algorithm)(reason);
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// 4. Perform ! ReadableByteStreamControllerClearAlgorithms(this).
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readable_byte_stream_controller_clear_algorithms(*this);
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// 5. Return result.
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return result;
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}
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void ReadableByteStreamController::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_byob_request);
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for (auto const& pending_pull_into : m_pending_pull_intos) {
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visitor.visit(pending_pull_into.buffer);
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visitor.visit(pending_pull_into.view_constructor);
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}
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for (auto const& item : m_queue)
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visitor.visit(item.buffer);
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visitor.visit(m_stream);
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}
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}
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