ladybird/Userland/Libraries/LibWeb/Streams/WritableStreamDefaultController.cpp

68 lines
2.0 KiB
C++

/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibWeb/DOM/AbortSignal.h>
#include <LibWeb/Streams/WritableStream.h>
#include <LibWeb/Streams/WritableStreamDefaultController.h>
namespace Web::Streams {
JS_DEFINE_ALLOCATOR(WritableStreamDefaultController);
void WritableStreamDefaultController::visit_edges(Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_signal);
for (auto& value : m_queue)
visitor.visit(value.value);
visitor.visit(m_stream);
visitor.visit(m_abort_algorithm);
visitor.visit(m_close_algorithm);
visitor.visit(m_strategy_size_algorithm);
visitor.visit(m_write_algorithm);
}
// https://streams.spec.whatwg.org/#ws-default-controller-error
WebIDL::ExceptionOr<void> WritableStreamDefaultController::error(JS::Value error)
{
// 1. Let state be this.[[stream]].[[state]].
auto state = m_stream->state();
// 2. If state is not "writable", return.
if (state != WritableStream::State::Writable)
return {};
// 3. Perform ! WritableStreamDefaultControllerError(this, e).
return writable_stream_default_controller_error(*this, error);
}
// https://streams.spec.whatwg.org/#ws-default-controller-private-abort
WebIDL::ExceptionOr<JS::GCPtr<WebIDL::Promise>> WritableStreamDefaultController::abort_steps(JS::Value reason)
{
// 1. Let result be the result of performing this.[[abortAlgorithm]], passing reason.
auto result = TRY(m_abort_algorithm->function()(reason));
// 2. Perform ! WritableStreamDefaultControllerClearAlgorithms(this).
writable_stream_default_controller_clear_algorithms(*this);
// 3. Return result.
return result;
}
// https://streams.spec.whatwg.org/#ws-default-controller-private-error
void WritableStreamDefaultController::error_steps()
{
// 1. Perform ! ResetQueue(this).
reset_queue(*this);
}
WritableStreamDefaultController::WritableStreamDefaultController(JS::Realm& realm)
: Bindings::PlatformObject(realm)
{
}
}