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LibWeb: Add ReadableStreamDefaultReader

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Matthew Olsson 2023-03-28 18:30:22 -07:00 • committed by Linus Groh
parent 7ff657ef57
commit 222e3c32cd
11 changed files with 385 additions and 8 deletions
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60
Userland/Libraries/LibWeb/Streams/ReadableStreamDefaultReader.h Normal file
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/*
* Copyright (c) 2023, Matthew Olsson <mattco@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Function.h>
#include <AK/SinglyLinkedList.h>
#include <LibJS/Forward.h>
#include <LibWeb/Bindings/PlatformObject.h>
#include <LibWeb/Forward.h>
#include <LibWeb/Streams/ReadableStreamGenericReader.h>
namespace Web::Streams {
struct ReadableStreamReadResult {
JS::Value value;
bool done;
};
class ReadRequest : public RefCounted<ReadRequest> {
public:
virtual ~ReadRequest() = default;
virtual void on_chunk(JS::Value chunk) = 0;
virtual void on_close() = 0;
virtual void on_error(JS::Value error) = 0;
};
// https://streams.spec.whatwg.org/#readablestreamdefaultreader
class ReadableStreamDefaultReader final
: public Bindings::PlatformObject
, public ReadableStreamGenericReaderMixin {
WEB_PLATFORM_OBJECT(ReadableStreamDefaultReader, Bindings::PlatformObject);
public:
static WebIDL::ExceptionOr<JS::NonnullGCPtr<ReadableStreamDefaultReader>> construct_impl(JS::Realm&, JS::NonnullGCPtr<ReadableStream>);
virtual ~ReadableStreamDefaultReader() override = default;
WebIDL::ExceptionOr<JS::NonnullGCPtr<JS::Promise>> read();
WebIDL::ExceptionOr<void> release_lock();
SinglyLinkedList<NonnullRefPtr<ReadRequest>>& read_requests() { return m_read_requests; }
virtual bool is_default_reader() const override { return true; }
private:
explicit ReadableStreamDefaultReader(JS::Realm&);
virtual JS::ThrowCompletionOr<void> initialize(JS::Realm&) override;
virtual void visit_edges(Cell::Visitor&) override;
SinglyLinkedList<NonnullRefPtr<ReadRequest>> m_read_requests;
};
}