diff options
author | Glenn Watson <glenn.watson@nokia.com> | 2012-02-07 12:25:07 +1000 |
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committer | Qt by Nokia <qt-info@nokia.com> | 2012-03-11 23:58:39 +0100 |
commit | 15c13b91e66b0bd0d179f0303bb17c7793f80a07 (patch) | |
tree | 4fef509b602582190351653abd718bee396bd8cc /src/corelib/global/qisenum.h | |
parent | e3429f764b37c3d58faf06c6e1856e66fb8d64b9 (diff) |
Add Q_IS_ENUM(), and provide as flag in QMetaType::typeFlags()
Add Q_IS_ENUM() macro to determine if a given type is an
enumeration. Use information from that in QMetaType::registerType()
to store whether custom registered metatypes are enums or not.
This information can then be accessed by calling
QMetaType::typeFlags(int type). This is used by the declarative
code to determine whether a custom type in a variant can be safely
cast to an integer, which is required to allow passing non-local
enums as signal/slot params.
Change-Id: I9733837f56af201fa3017b4a22b761437a3c0de4
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Diffstat (limited to 'src/corelib/global/qisenum.h')
-rw-r--r-- | src/corelib/global/qisenum.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/src/corelib/global/qisenum.h b/src/corelib/global/qisenum.h new file mode 100644 index 0000000000..c9b6ec6695 --- /dev/null +++ b/src/corelib/global/qisenum.h @@ -0,0 +1,64 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/qglobal.h> + +#ifndef QISENUM_H +#define QISENUM_H + +QT_BEGIN_HEADER +QT_BEGIN_NAMESPACE + +#ifndef Q_IS_ENUM +# if defined(Q_CC_GNU) && (__GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 3)) +# define Q_IS_ENUM(x) __is_enum(x) +# elif defined(Q_CC_MSVC) && defined(_MSC_FULL_VER) && (_MSC_FULL_VER >=140050215) +# define Q_IS_ENUM(x) __is_enum(x) +# else +# include <QtCore/qtypetraits.h> +# define Q_IS_ENUM(x) QtPrivate::is_enum<x>::value +# endif +#endif + +QT_END_HEADER +QT_END_NAMESPACE + +#endif // QISENUM_H |