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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 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, Digia gives you certain additional
** rights. These rights are described in the Digia 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.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtCore/qglobal.h>
#ifndef QFLAGS_H
#define QFLAGS_H
#include <QtCore/qtypeinfo.h>
#include <QtCore/qtypetraits.h>
QT_BEGIN_NAMESPACE
class QFlag
{
int i;
public:
Q_DECL_CONSTEXPR inline QFlag(int i);
Q_DECL_CONSTEXPR inline operator int() const { return i; }
};
Q_DECLARE_TYPEINFO(QFlag, Q_PRIMITIVE_TYPE);
Q_DECL_CONSTEXPR inline QFlag::QFlag(int ai) : i(ai) {}
class QIncompatibleFlag
{
int i;
public:
Q_DECL_CONSTEXPR inline explicit QIncompatibleFlag(int i);
Q_DECL_CONSTEXPR inline operator int() const { return i; }
};
Q_DECLARE_TYPEINFO(QIncompatibleFlag, Q_PRIMITIVE_TYPE);
Q_DECL_CONSTEXPR inline QIncompatibleFlag::QIncompatibleFlag(int ai) : i(ai) {}
#ifndef Q_NO_TYPESAFE_FLAGS
template<typename Enum>
class QFlags
{
Q_STATIC_ASSERT_X((sizeof(Enum) <= sizeof(int)),
"QFlags uses an int as storage, so an enum with underlying "
"long long would overflow. Qt 5.1 will have support for 64bit enums.");
struct Private;
typedef int (Private::*Zero);
public:
#ifndef Q_QDOC
typedef typename QtPrivate::if_<
QtPrivate::is_unsigned<Enum>::value,
unsigned int,
signed int
>::type Int;
#endif
typedef Enum enum_type;
// compiler-generated copy/move ctor/assignment operators are fine!
#ifdef Q_QDOC
typedef int Int; // the real typedef above is too complex for qdoc
inline QFlags(const QFlags &other);
inline QFlags &operator=(const QFlags &other);
#endif
Q_DECL_CONSTEXPR inline QFlags(Enum f) : i(f) {}
Q_DECL_CONSTEXPR inline QFlags(Zero = 0) : i(0) {}
Q_DECL_CONSTEXPR inline QFlags(QFlag f) : i(f) {}
inline QFlags &operator&=(int mask) { i &= mask; return *this; }
inline QFlags &operator&=(uint mask) { i &= mask; return *this; }
inline QFlags &operator|=(QFlags f) { i |= f.i; return *this; }
inline QFlags &operator|=(Enum f) { i |= f; return *this; }
inline QFlags &operator^=(QFlags f) { i ^= f.i; return *this; }
inline QFlags &operator^=(Enum f) { i ^= f; return *this; }
Q_DECL_CONSTEXPR inline operator Int() const { return i; }
Q_DECL_CONSTEXPR inline QFlags operator|(QFlags f) const { return QFlags(Enum(i | f.i)); }
Q_DECL_CONSTEXPR inline QFlags operator|(Enum f) const { return QFlags(Enum(i | f)); }
Q_DECL_CONSTEXPR inline QFlags operator^(QFlags f) const { return QFlags(Enum(i ^ f.i)); }
Q_DECL_CONSTEXPR inline QFlags operator^(Enum f) const { return QFlags(Enum(i ^ f)); }
Q_DECL_CONSTEXPR inline QFlags operator&(int mask) const { return QFlags(Enum(i & mask)); }
Q_DECL_CONSTEXPR inline QFlags operator&(uint mask) const { return QFlags(Enum(i & mask)); }
Q_DECL_CONSTEXPR inline QFlags operator&(Enum f) const { return QFlags(Enum(i & f)); }
Q_DECL_CONSTEXPR inline QFlags operator~() const { return QFlags(Enum(~i)); }
Q_DECL_CONSTEXPR inline bool operator!() const { return !i; }
Q_DECL_CONSTEXPR inline bool testFlag(Enum f) const { return (i & f) == f && (f != 0 || i == Int(f) ); }
private:
Int i;
};
#define Q_DECLARE_FLAGS(Flags, Enum)\
typedef QFlags<Enum> Flags;
#define Q_DECLARE_INCOMPATIBLE_FLAGS(Flags) \
Q_DECL_CONSTEXPR inline QIncompatibleFlag operator|(Flags::enum_type f1, int f2) \
{ return QIncompatibleFlag(int(f1) | f2); }
#define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags) \
Q_DECL_CONSTEXPR inline QFlags<Flags::enum_type> operator|(Flags::enum_type f1, Flags::enum_type f2) \
{ return QFlags<Flags::enum_type>(f1) | f2; } \
Q_DECL_CONSTEXPR inline QFlags<Flags::enum_type> operator|(Flags::enum_type f1, QFlags<Flags::enum_type> f2) \
{ return f2 | f1; } Q_DECLARE_INCOMPATIBLE_FLAGS(Flags)
#else /* Q_NO_TYPESAFE_FLAGS */
#define Q_DECLARE_FLAGS(Flags, Enum)\
typedef uint Flags;
#define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags)
#endif /* Q_NO_TYPESAFE_FLAGS */
QT_END_NAMESPACE
#endif // QFLAGS_H
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