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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
#ifndef QANIMATIONJOBUTIL_P_H
#define QANIMATIONJOBUTIL_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 <type_traits>
QT_REQUIRE_CONFIG(qml_animation);
// SelfDeletable is used for self-destruction detection along with
// ACTION_IF_DELETED and RETURN_IF_DELETED macros. While using, the objects
// under test should have a member m_selfDeletable of type SelfDeletable
struct SelfDeletable {
~SelfDeletable() {
if (m_wasDeleted)
*m_wasDeleted = true;
}
bool *m_wasDeleted = nullptr;
};
// \param p pointer to object under test, which should have a member m_selfDeletable of type SelfDeletable
// \param func statements or functions that to be executed under test.
// \param action post process if p was deleted under test.
#define ACTION_IF_DELETED(p, func, action) \
do { \
static_assert(std::is_same<decltype((p)->m_selfDeletable), SelfDeletable>::value, "m_selfDeletable must be SelfDeletable");\
bool *prevWasDeleted = (p)->m_selfDeletable.m_wasDeleted; \
bool wasDeleted = false; \
(p)->m_selfDeletable.m_wasDeleted = &wasDeleted; \
{func;} \
if (wasDeleted) { \
if (prevWasDeleted) \
*prevWasDeleted = true; \
{action;} \
} \
(p)->m_selfDeletable.m_wasDeleted = prevWasDeleted; \
} while (false)
#define RETURN_IF_DELETED(func) \
ACTION_IF_DELETED(this, func, return)
#endif // QANIMATIONJOBUTIL_P_H
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