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// Copyright (C) 2025 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
// Qt-Security score:significant reason:default
#ifndef QRANDOMACCESSASYNCFILE_P_H
#define QRANDOMACCESSASYNCFILE_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "qiooperation_p.h"
#include <QtCore/qobject.h>
#include <QtCore/qspan.h>
QT_BEGIN_NAMESPACE
class QRandomAccessAsyncFilePrivate;
class Q_CORE_EXPORT QRandomAccessAsyncFile : public QObject
{
Q_OBJECT
public:
explicit QRandomAccessAsyncFile(QObject *parent = nullptr);
~QRandomAccessAsyncFile() override;
// sync APIs
void close();
qint64 size() const;
[[nodiscard]] QIOOperation *open(const QString &filePath, QIODeviceBase::OpenMode mode);
[[nodiscard]] QIOOperation *flush();
// owning APIs: we are responsible for storing the data
[[nodiscard]] QIOReadOperation *read(qint64 offset, qint64 maxSize);
[[nodiscard]] QIOWriteOperation *write(qint64 offset, const QByteArray &data);
[[nodiscard]] QIOWriteOperation *write(qint64 offset, QByteArray &&data);
// non-owning APIs: the user has to control the lifetime of buffers
[[nodiscard]] QIOVectoredReadOperation *
readInto(qint64 offset, QSpan<std::byte> buffer);
[[nodiscard]] QIOVectoredWriteOperation *
writeFrom(qint64 offset, QSpan<const std::byte> buffer);
// vectored IO APIs, also non-owning
[[nodiscard]] QIOVectoredReadOperation *
readInto(qint64 offset, QSpan<const QSpan<std::byte>> buffers);
[[nodiscard]] QIOVectoredWriteOperation *
writeFrom(qint64 offset, QSpan<const QSpan<const std::byte>> buffers);
Q_SIGNALS:
private:
Q_DECLARE_PRIVATE(QRandomAccessAsyncFile)
Q_DISABLE_COPY_MOVE(QRandomAccessAsyncFile)
};
QT_END_NAMESPACE
#endif // QRANDOMACCESSASYNCFILE_P_H
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