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/*
* Copyright (C) 2021 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. AND ITS CONTRIBUTORS ``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 ITS 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 "ActiveDOMObject.h"
#include "BufferSource.h"
#include "ExceptionOr.h"
#include "FileHandle.h"
#include "FileSystemSyncAccessHandleIdentifier.h"
#include "IDLTypes.h"
#include <wtf/Deque.h>
#include <wtf/FileSystem.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class FileSystemFileHandle;
template<typename> class DOMPromiseDeferred;
class FileSystemSyncAccessHandle : public ActiveDOMObject, public RefCounted<FileSystemSyncAccessHandle>, public CanMakeWeakPtr<FileSystemSyncAccessHandle> {
public:
struct FilesystemReadWriteOptions {
unsigned long long at;
};
static Ref<FileSystemSyncAccessHandle> create(ScriptExecutionContext&, FileSystemFileHandle&, FileSystemSyncAccessHandleIdentifier, FileHandle&&);
~FileSystemSyncAccessHandle();
void truncate(unsigned long long size, DOMPromiseDeferred<void>&&);
void getSize(DOMPromiseDeferred<IDLUnsignedLongLong>&&);
void flush(DOMPromiseDeferred<void>&&);
void close(DOMPromiseDeferred<void>&&);
ExceptionOr<unsigned long long> read(BufferSource&&, FilesystemReadWriteOptions);
ExceptionOr<unsigned long long> write(BufferSource&&, FilesystemReadWriteOptions);
using Result = std::variant<ExceptionOr<void>, ExceptionOr<uint64_t>>;
void completePromise(Result&&);
void invalidate();
private:
FileSystemSyncAccessHandle(ScriptExecutionContext&, FileSystemFileHandle&, FileSystemSyncAccessHandleIdentifier, FileHandle&&);
bool isClosingOrClosed() const;
using CloseCallback = CompletionHandler<void(ExceptionOr<void>&&)>;
void closeInternal(CloseCallback&&);
void closeFile();
void didCloseFile();
enum class CloseMode : bool { Async, Sync };
void closeBackend(CloseMode);
void didCloseBackend(ExceptionOr<void>&&);
// ActiveDOMObject
const char* activeDOMObjectName() const final;
void stop() final;
Ref<FileSystemFileHandle> m_source;
FileSystemSyncAccessHandleIdentifier m_identifier;
FileHandle m_file;
std::optional<ExceptionOr<void>> m_closeResult;
Vector<CloseCallback> m_closeCallbacks;
using Promise = std::variant<DOMPromiseDeferred<void>, DOMPromiseDeferred<IDLUnsignedLongLong>>;
Deque<Promise> m_pendingPromises;
};
} // namespace WebCore
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