RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-31 05:08:13 +00:00
Code Issues Activity Actions

LibWeb: Add TransformStreamDefaultController scaffolding

Browse source 
This adds the scaffolding of TransformStreamDefaultController so we can
start implementing the necessary abstract operations for it.
This commit is contained in:
Kenneth Myhra 2023-07-07 15:49:22 +02:00 • committed by Andreas Kling
parent f1d69d789b
commit 0091a60448
6 changed files with 106 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

46
Userland/Libraries/LibWeb/Streams/TransformStreamDefaultController.cpp Normal file
View file

@ -0,0 +1,46 @@
/*
* Copyright (c) 2023, Kenneth Myhra <kennethmyhra@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Streams/TransformStream.h>
#include <LibWeb/Streams/TransformStreamDefaultController.h>
namespace Web::Streams {
TransformStreamDefaultController::TransformStreamDefaultController(JS::Realm& realm)
: Bindings::PlatformObject(realm)
{
}
TransformStreamDefaultController::~TransformStreamDefaultController() = default;
JS::ThrowCompletionOr<void> TransformStreamDefaultController::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::TransformStreamDefaultControllerPrototype>(realm, "TransformStreamDefaultController"));
return {};
}
void TransformStreamDefaultController::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_stream);
}
// https://streams.spec.whatwg.org/#ts-default-controller-desired-size
Optional<double> TransformStreamDefaultController::desired_size()
{
VERIFY(stream()->readable()->controller().has_value() && stream()->readable()->controller()->has<JS::NonnullGCPtr<ReadableStreamDefaultController>>());
// 1. Let readableController be this.[[stream]].[[readable]].[[controller]].
auto readable_controller = stream()->readable()->controller()->get<JS::NonnullGCPtr<ReadableStreamDefaultController>>();
// 2. Return ! ReadableStreamDefaultControllerGetDesiredSize(readableController).
return readable_stream_default_controller_get_desired_size(*readable_controller);
}
}