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/****************************************************************************
**
** Copyright (C) 2019 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QQMLTYPEMODULE_P_H
#define QQMLTYPEMODULE_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 <QtQml/qtqmlglobal.h>
#include <QtQml/private/qstringhash_p.h>
#include <QtCore/qmutex.h>
#include <QtCore/qstring.h>
#include <QtCore/qversionnumber.h>
#include <functional>
QT_BEGIN_NAMESPACE
class QQmlType;
class QQmlTypePrivate;
struct QQmlMetaTypeData;
namespace QV4 {
struct String;
}
class QQmlTypeModule
{
public:
QQmlTypeModule() = default;
QQmlTypeModule(const QString &uri, quint8 majorVersion)
: m_module(uri), m_majorVersion(majorVersion)
{}
void add(QQmlTypePrivate *);
void remove(const QQmlTypePrivate *type);
bool isLocked() const { return m_locked.loadRelaxed() != 0; }
void lock() { m_locked.storeRelaxed(1); }
QString module() const
{
// No need to lock. m_module is const
return m_module;
}
quint8 majorVersion() const
{
// No need to lock. d->majorVersion is const
return m_majorVersion;
}
void addMinorVersion(quint8 minorVersion);
quint8 minimumMinorVersion() const { return m_minMinorVersion.loadRelaxed(); }
quint8 maximumMinorVersion() const { return m_maxMinorVersion.loadRelaxed(); }
QQmlType type(const QHashedStringRef &, QTypeRevision version) const;
QQmlType type(const QV4::String *, QTypeRevision version) const;
void walkCompositeSingletons(const std::function<void(const QQmlType &)> &callback) const;
private:
const QString m_module;
const quint8 m_majorVersion = 0;
// Can only ever decrease
QAtomicInt m_minMinorVersion = std::numeric_limits<quint8>::max();
// Can only ever increase
QAtomicInt m_maxMinorVersion = 0;
// Bool. Can only be set to 1 once.
QAtomicInt m_locked = 0;
using TypeHash = QStringHash<QList<QQmlTypePrivate *>>;
TypeHash m_typeHash;
mutable QMutex m_mutex;
};
QT_END_NAMESPACE
#endif // QQMLTYPEMODULE_P_H
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