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/*
* Copyright (C) 2025 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "InternalReadableStreamDefaultReader.h"
#include "ReadableStreamReadRequest.h"
#include "ScriptWrappable.h"
#include "WebCoreOpaqueRoot.h"
#include <JavaScriptCore/Strong.h>
#include <wtf/RefCountedAndCanMakeWeakPtr.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class DOMPromise;
class DeferredPromise;
class InternalReadableStreamDefaultReader;
class JSDOMGlobalObject;
class ReadableStream;
class ReadableStreamReadRequest;
class ReadableStreamDefaultReader : public ScriptWrappable, public RefCountedAndCanMakeWeakPtr<ReadableStreamDefaultReader> {
WTF_MAKE_TZONE_OR_ISO_ALLOCATED(ReadableStreamDefaultReader);
public:
static ExceptionOr<Ref<ReadableStreamDefaultReader>> create(JSDOMGlobalObject&, ReadableStream&);
~ReadableStreamDefaultReader();
DOMPromise& closedPromise() const;
void readForBindings(JSDOMGlobalObject&, Ref<DeferredPromise>&&);
void read(JSDOMGlobalObject&, Ref<ReadableStreamReadRequest>&&);
ExceptionOr<void> releaseLock(JSDOMGlobalObject&);
InternalReadableStreamDefaultReader* internalDefaultReader() { return m_internalDefaultReader.get(); }
size_t getNumReadRequests() const { return m_readRequests.size(); }
void addReadRequest(Ref<ReadableStreamReadRequest>&&);
Ref<ReadableStreamReadRequest> takeFirstReadRequest();
Ref<DOMPromise> cancel(JSDOMGlobalObject&, JSC::JSValue);
Ref<DOMPromise> genericCancel(JSDOMGlobalObject&, JSC::JSValue);
void resolveClosedPromise();
void rejectClosedPromise(JSC::JSValue);
void errorReadRequests(JSC::JSValue);
using ClosedRejectionCallback = Function<void(JSDOMGlobalObject&, JSC::JSValue)>;
void onClosedPromiseRejection(ClosedRejectionCallback&&);
void onClosedPromiseResolution(Function<void()>&&);
bool isReachableFromOpaqueRoots() const;
template<typename Visitor> void visitAdditionalChildren(Visitor&);
ReadableStream* stream() { return m_stream.get(); }
private:
ReadableStreamDefaultReader(Ref<ReadableStream>&&, RefPtr<InternalReadableStreamDefaultReader>&&, Ref<DOMPromise>&&, Ref<DeferredPromise>&&);
ExceptionOr<void> setup(JSDOMGlobalObject&);
void genericRelease(JSDOMGlobalObject&);
void errorReadRequests(const Exception&);
Ref<DOMPromise> m_closedPromise;
Ref<DeferredPromise> m_closedDeferred;
RefPtr<ReadableStream> m_stream;
Deque<Ref<ReadableStreamReadRequest>> m_readRequests;
const RefPtr<InternalReadableStreamDefaultReader> m_internalDefaultReader;
ClosedRejectionCallback m_closedRejectionCallback;
Function<void()> m_closedResolutionCallback;
};
WebCoreOpaqueRoot root(ReadableStreamDefaultReader*);
} // namespace WebCore
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