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Internal/Contributor docs for the Qt SDK. <b>Note:</b> These are NOT official API docs; those are found <a href='https://doc.qt.io/'>here</a>.
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qanimationjobutil_p.h
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
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#ifndef QANIMATIONJOBUTIL_P_H
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#define QANIMATIONJOBUTIL_P_H
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//
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// W A R N I N G
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// -------------
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//
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// This file is not part of the Qt API. It exists purely as an
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// implementation detail. This header file may change from version to
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// version without notice, or even be removed.
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//
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// We mean it.
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//
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#include <QtCore/qcompilerdetection.h>
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#include <QtCore/qtconfigmacros.h>
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#include <type_traits>
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QT_REQUIRE_CONFIG
(qml_animation);
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#if defined(Q_CC_GNU_ONLY) && Q_CC_GNU_ONLY >= 1300
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# define ACTION_IF_DISABLE_DANGLING_POINTER_WARNING QT_WARNING_DISABLE_GCC("-Wdangling-pointer")
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#else
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# define ACTION_IF_DISABLE_DANGLING_POINTER_WARNING
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#endif
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// SelfDeletable is used for self-destruction detection along with
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// ACTION_IF_DELETED and RETURN_IF_DELETED macros. While using, the objects
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// under test should have a member m_selfDeletable of type SelfDeletable
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struct
SelfDeletable
{
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~SelfDeletable
() {
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if
(
m_wasDeleted
)
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*
m_wasDeleted
=
true
;
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}
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bool
*
m_wasDeleted
=
nullptr
;
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};
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// \param p pointer to object under test, which should have a member m_selfDeletable of type SelfDeletable
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// \param func statements or functions that to be executed under test.
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// \param action post process if p was deleted under test.
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#define ACTION_IF_DELETED(p, func, action) \
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do { \
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QT_WARNING_PUSH \
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ACTION_IF_DISABLE_DANGLING_POINTER_WARNING \
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static_assert(std::is_same<decltype((p)->m_selfDeletable), SelfDeletable>::value, "m_selfDeletable must be SelfDeletable");\
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bool *prevWasDeleted = (p)->m_selfDeletable.m_wasDeleted; \
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bool wasDeleted = false; \
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(p)->m_selfDeletable.m_wasDeleted = &wasDeleted; \
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{func;} \
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if (wasDeleted) { \
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if (prevWasDeleted) \
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*prevWasDeleted = true; \
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{action;} \
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} \
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(p)->m_selfDeletable.m_wasDeleted = prevWasDeleted; \
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QT_WARNING_POP \
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} while (false)
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#define RETURN_IF_DELETED(func) \
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ACTION_IF_DELETED(this, func, return)
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#endif
// QANIMATIONJOBUTIL_P_H
QT_REQUIRE_CONFIG
#define QT_REQUIRE_CONFIG(feature)
Definition
qtconfigmacros.h:67
SelfDeletable
Definition
qanimationjobutil_p.h:34
SelfDeletable::~SelfDeletable
~SelfDeletable()
Definition
qanimationjobutil_p.h:35
SelfDeletable::m_wasDeleted
bool * m_wasDeleted
Definition
qanimationjobutil_p.h:39
qtdeclarative
src
qml
animations
qanimationjobutil_p.h
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