55 lines
1.9 KiB
C++
55 lines
1.9 KiB
C++
/*
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* Copyright (c) 2023, Kenneth Myhra <kennethmyhra@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/Bindings/Intrinsics.h>
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#include <LibWeb/Streams/TransformStream.h>
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#include <LibWeb/Streams/TransformStreamDefaultController.h>
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namespace Web::Streams {
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TransformStreamDefaultController::TransformStreamDefaultController(JS::Realm& realm)
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: Bindings::PlatformObject(realm)
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{
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}
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TransformStreamDefaultController::~TransformStreamDefaultController() = default;
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JS::ThrowCompletionOr<void> TransformStreamDefaultController::initialize(JS::Realm& realm)
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{
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MUST_OR_THROW_OOM(Base::initialize(realm));
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set_prototype(&Bindings::ensure_web_prototype<Bindings::TransformStreamDefaultControllerPrototype>(realm, "TransformStreamDefaultController"));
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return {};
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}
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void TransformStreamDefaultController::visit_edges(Cell::Visitor& visitor)
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{
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Base::visit_edges(visitor);
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visitor.visit(m_stream);
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}
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// https://streams.spec.whatwg.org/#ts-default-controller-desired-size
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Optional<double> TransformStreamDefaultController::desired_size()
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{
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VERIFY(stream()->readable()->controller().has_value() && stream()->readable()->controller()->has<JS::NonnullGCPtr<ReadableStreamDefaultController>>());
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// 1. Let readableController be this.[[stream]].[[readable]].[[controller]].
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auto readable_controller = stream()->readable()->controller()->get<JS::NonnullGCPtr<ReadableStreamDefaultController>>();
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// 2. Return ! ReadableStreamDefaultControllerGetDesiredSize(readableController).
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return readable_stream_default_controller_get_desired_size(*readable_controller);
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}
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// https://streams.spec.whatwg.org/#ts-default-controller-error
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WebIDL::ExceptionOr<void> TransformStreamDefaultController::error(Optional<JS::Value> reason)
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{
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// 1. Perform ? TransformStreamDefaultControllerError(this, e).
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TRY(transform_stream_default_controller_error(*this, reason.has_value() ? reason.value() : JS::js_undefined()));
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return {};
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}
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}
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