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/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibJS/Runtime/PromiseCapability.h>
#include <LibWeb/Bindings/Intrinsics.h>
#include <LibWeb/Bindings/WritableStreamDefaultWriterPrototype.h>
#include <LibWeb/Streams/AbstractOperations.h>
#include <LibWeb/Streams/WritableStream.h>
#include <LibWeb/Streams/WritableStreamDefaultWriter.h>
#include <LibWeb/WebIDL/ExceptionOr.h>
namespace Web::Streams {
WebIDL::ExceptionOr<JS::NonnullGCPtr<WritableStreamDefaultWriter>> WritableStreamDefaultWriter::construct_impl(JS::Realm& realm, JS::NonnullGCPtr<WritableStream> stream)
{
auto writer = MUST_OR_THROW_OOM(realm.heap().allocate<WritableStreamDefaultWriter>(realm, realm));
// 1. Perform ? SetUpWritableStreamDefaultWriter(this, stream).
TRY(set_up_writable_stream_default_writer(*writer, stream));
return writer;
}
// https://streams.spec.whatwg.org/#default-writer-closed
JS::GCPtr<JS::Object> WritableStreamDefaultWriter::closed()
{
// 1. Return this.[[closedPromise]].
return m_closed_promise->promise();
}
// https://streams.spec.whatwg.org/#default-writer-desired-size
WebIDL::ExceptionOr<Optional<double>> WritableStreamDefaultWriter::desired_size() const
{
// 1. If this.[[stream]] is undefined, throw a TypeError exception.
if (!m_stream)
return WebIDL::SimpleException { WebIDL::SimpleExceptionType::TypeError, "Cannot get desired size of writer that has no locked stream"sv };
// 2. Return ! WritableStreamDefaultWriterGetDesiredSize(this).
return writable_stream_default_writer_get_desired_size(*this);
}
// https://streams.spec.whatwg.org/#default-writer-ready
JS::GCPtr<JS::Object> WritableStreamDefaultWriter::ready()
{
// 1. Return this.[[readyPromise]].
return m_ready_promise->promise();
}
WritableStreamDefaultWriter::WritableStreamDefaultWriter(JS::Realm& realm)
: Bindings::PlatformObject(realm)
{
}
JS::ThrowCompletionOr<void> WritableStreamDefaultWriter::initialize(JS::Realm& realm)
{
MUST_OR_THROW_OOM(Base::initialize(realm));
set_prototype(&Bindings::ensure_web_prototype<Bindings::WritableStreamDefaultWriterPrototype>(realm, "WritableStreamDefaultWriter"));
return {};
}
void WritableStreamDefaultWriter::visit_edges(Cell::Visitor& visitor)
{
Base::visit_edges(visitor);
visitor.visit(m_closed_promise);
visitor.visit(m_ready_promise);
visitor.visit(m_stream);
}
}
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