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c29916775e
There were several instances where the spec marks an AO invocation as infallible, but we were propagating WebIDL::ExceptionOr. These mostly cannot throw due to knowledge about the values they are provided. By unwinding these, we can remove a decent amount of exception handling.
72 lines
2.6 KiB
C++
72 lines
2.6 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/Bindings/TransformStreamDefaultControllerPrototype.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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JS_DEFINE_ALLOCATOR(TransformStreamDefaultController);
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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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void TransformStreamDefaultController::initialize(JS::Realm& realm)
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{
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Base::initialize(realm);
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WEB_SET_PROTOTYPE_FOR_INTERFACE(TransformStreamDefaultController);
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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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visitor.visit(m_flush_algorithm);
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visitor.visit(m_transform_algorithm);
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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-enqueue
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WebIDL::ExceptionOr<void> TransformStreamDefaultController::enqueue(Optional<JS::Value> chunk)
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{
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// 1. Perform ? TransformStreamDefaultControllerEnqueue(this, chunk).
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TRY(transform_stream_default_controller_enqueue(*this, chunk.has_value() ? chunk.value() : JS::js_undefined()));
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return {};
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}
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// https://streams.spec.whatwg.org/#ts-default-controller-error
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void TransformStreamDefaultController::error(Optional<JS::Value> reason)
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{
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// 1. Perform ? TransformStreamDefaultControllerError(this, e).
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transform_stream_default_controller_error(*this, reason.has_value() ? reason.value() : JS::js_undefined());
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}
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// https://streams.spec.whatwg.org/#ts-default-controller-terminate
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void TransformStreamDefaultController::terminate()
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{
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// 1. Perform ? TransformStreamDefaultControllerTerminate(this).
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transform_stream_default_controller_terminate(*this);
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}
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}
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