LCOV - code coverage report
Current view: top level - usr/include/x86_64-linux-gnu/qt5/QtCore - qflags.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 3 33.3 %
Date: 2016-09-12 13:07:23 Functions: 2 8 25.0 %

          Line data    Source code
       1             : /****************************************************************************
       2             : **
       3             : ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
       4             : ** Contact: http://www.qt-project.org/legal
       5             : **
       6             : ** This file is part of the QtCore module of the Qt Toolkit.
       7             : **
       8             : ** $QT_BEGIN_LICENSE:LGPL$
       9             : ** Commercial License Usage
      10             : ** Licensees holding valid commercial Qt licenses may use this file in
      11             : ** accordance with the commercial license agreement provided with the
      12             : ** Software or, alternatively, in accordance with the terms contained in
      13             : ** a written agreement between you and Digia.  For licensing terms and
      14             : ** conditions see http://qt.digia.com/licensing.  For further information
      15             : ** use the contact form at http://qt.digia.com/contact-us.
      16             : **
      17             : ** GNU Lesser General Public License Usage
      18             : ** Alternatively, this file may be used under the terms of the GNU Lesser
      19             : ** General Public License version 2.1 as published by the Free Software
      20             : ** Foundation and appearing in the file LICENSE.LGPL included in the
      21             : ** packaging of this file.  Please review the following information to
      22             : ** ensure the GNU Lesser General Public License version 2.1 requirements
      23             : ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
      24             : **
      25             : ** In addition, as a special exception, Digia gives you certain additional
      26             : ** rights.  These rights are described in the Digia Qt LGPL Exception
      27             : ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
      28             : **
      29             : ** GNU General Public License Usage
      30             : ** Alternatively, this file may be used under the terms of the GNU
      31             : ** General Public License version 3.0 as published by the Free Software
      32             : ** Foundation and appearing in the file LICENSE.GPL included in the
      33             : ** packaging of this file.  Please review the following information to
      34             : ** ensure the GNU General Public License version 3.0 requirements will be
      35             : ** met: http://www.gnu.org/copyleft/gpl.html.
      36             : **
      37             : **
      38             : ** $QT_END_LICENSE$
      39             : **
      40             : ****************************************************************************/
      41             : 
      42             : #include <QtCore/qglobal.h>
      43             : 
      44             : #ifndef QFLAGS_H
      45             : #define QFLAGS_H
      46             : 
      47             : #include <QtCore/qtypeinfo.h>
      48             : #include <QtCore/qtypetraits.h>
      49             : 
      50             : QT_BEGIN_NAMESPACE
      51             : 
      52             : class QFlag
      53             : {
      54             :     int i;
      55             : public:
      56             :     Q_DECL_CONSTEXPR inline QFlag(int ai) : i(ai) {}
      57             :     Q_DECL_CONSTEXPR inline operator int() const { return i; }
      58             : 
      59             : #if !defined(Q_CC_MSVC)
      60             :     // Microsoft Visual Studio has buggy behavior when it comes to
      61             :     // unsigned enums: even if the enum is unsigned, the enum tags are
      62             :     // always signed
      63             : #  if !defined(__LP64__) && !defined(Q_QDOC)
      64             :     Q_DECL_CONSTEXPR inline QFlag(long ai) : i(int(ai)) {}
      65             :     Q_DECL_CONSTEXPR inline QFlag(ulong ai) : i(int(long(ai))) {}
      66             : #  endif
      67             :     Q_DECL_CONSTEXPR inline QFlag(uint ai) : i(int(ai)) {}
      68             :     Q_DECL_CONSTEXPR inline QFlag(short ai) : i(int(ai)) {}
      69             :     Q_DECL_CONSTEXPR inline QFlag(ushort ai) : i(int(uint(ai))) {}
      70             :     Q_DECL_CONSTEXPR inline operator uint() const { return uint(i); }
      71             : #endif
      72             : };
      73             : Q_DECLARE_TYPEINFO(QFlag, Q_PRIMITIVE_TYPE);
      74             : 
      75             : class QIncompatibleFlag
      76             : {
      77             :     int i;
      78             : public:
      79             :     Q_DECL_CONSTEXPR inline explicit QIncompatibleFlag(int i);
      80             :     Q_DECL_CONSTEXPR inline operator int() const { return i; }
      81             : };
      82             : Q_DECLARE_TYPEINFO(QIncompatibleFlag, Q_PRIMITIVE_TYPE);
      83             : 
      84             : Q_DECL_CONSTEXPR inline QIncompatibleFlag::QIncompatibleFlag(int ai) : i(ai) {}
      85             : 
      86             : 
      87             : #ifndef Q_NO_TYPESAFE_FLAGS
      88             : 
      89             : template<typename Enum>
      90             : class QFlags
      91             : {
      92             :     Q_STATIC_ASSERT_X((sizeof(Enum) <= sizeof(int)),
      93             :                       "QFlags uses an int as storage, so an enum with underlying "
      94             :                       "long long will overflow.");
      95             :     struct Private;
      96             :     typedef int (Private::*Zero);
      97             : public:
      98             : #if defined(Q_CC_MSVC) || defined(Q_QDOC)
      99             :     // see above for MSVC
     100             :     // the definition below is too complex for qdoc
     101             :     typedef int Int;
     102             : #else
     103             :     typedef typename QtPrivate::if_<
     104             :             QtPrivate::is_unsigned<Enum>::value,
     105             :             unsigned int,
     106             :             signed int
     107             :         >::type Int;
     108             : #endif
     109             :     typedef Enum enum_type;
     110             :     // compiler-generated copy/move ctor/assignment operators are fine!
     111             : #ifdef Q_QDOC
     112             :     inline QFlags(const QFlags &other);
     113             :     inline QFlags &operator=(const QFlags &other);
     114             : #endif
     115          37 :     Q_DECL_CONSTEXPR inline QFlags(Enum f) : i(Int(f)) {}
     116             :     Q_DECL_CONSTEXPR inline QFlags(Zero = 0) : i(0) {}
     117             :     Q_DECL_CONSTEXPR inline QFlags(QFlag f) : i(f) {}
     118             : 
     119             :     inline QFlags &operator&=(int mask) { i &= mask; return *this; }
     120             :     inline QFlags &operator&=(uint mask) { i &= mask; return *this; }
     121             :     inline QFlags &operator&=(Enum mask) { i &= Int(mask); return *this; }
     122             :     inline QFlags &operator|=(QFlags f) { i |= f.i; return *this; }
     123           0 :     inline QFlags &operator|=(Enum f) { i |= Int(f); return *this; }
     124             :     inline QFlags &operator^=(QFlags f) { i ^= f.i; return *this; }
     125             :     inline QFlags &operator^=(Enum f) { i ^= Int(f); return *this; }
     126             : 
     127             :     Q_DECL_CONSTEXPR  inline operator Int() const { return i; }
     128             : 
     129             :     Q_DECL_CONSTEXPR inline QFlags operator|(QFlags f) const { return QFlags(QFlag(i | f.i)); }
     130             :     Q_DECL_CONSTEXPR inline QFlags operator|(Enum f) const { return QFlags(QFlag(i | Int(f))); }
     131             :     Q_DECL_CONSTEXPR inline QFlags operator^(QFlags f) const { return QFlags(QFlag(i ^ f.i)); }
     132             :     Q_DECL_CONSTEXPR inline QFlags operator^(Enum f) const { return QFlags(QFlag(i ^ Int(f))); }
     133             :     Q_DECL_CONSTEXPR inline QFlags operator&(int mask) const { return QFlags(QFlag(i & mask)); }
     134             :     Q_DECL_CONSTEXPR inline QFlags operator&(uint mask) const { return QFlags(QFlag(i & mask)); }
     135             :     Q_DECL_CONSTEXPR inline QFlags operator&(Enum f) const { return QFlags(QFlag(i & Int(f))); }
     136             :     Q_DECL_CONSTEXPR inline QFlags operator~() const { return QFlags(QFlag(~i)); }
     137             : 
     138             :     Q_DECL_CONSTEXPR inline bool operator!() const { return !i; }
     139             : 
     140           0 :     Q_DECL_CONSTEXPR inline bool testFlag(Enum f) const { return (i & Int(f)) == Int(f) && (Int(f) != 0 || i == Int(f) ); }
     141             : private:
     142             :     Int i;
     143             : };
     144             : 
     145             : #define Q_DECLARE_FLAGS(Flags, Enum)\
     146             : typedef QFlags<Enum> Flags;
     147             : 
     148             : #define Q_DECLARE_INCOMPATIBLE_FLAGS(Flags) \
     149             : Q_DECL_CONSTEXPR inline QIncompatibleFlag operator|(Flags::enum_type f1, int f2) \
     150             : { return QIncompatibleFlag(int(f1) | f2); }
     151             : 
     152             : #define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags) \
     153             : Q_DECL_CONSTEXPR inline QFlags<Flags::enum_type> operator|(Flags::enum_type f1, Flags::enum_type f2) \
     154             : { return QFlags<Flags::enum_type>(f1) | f2; } \
     155             : Q_DECL_CONSTEXPR inline QFlags<Flags::enum_type> operator|(Flags::enum_type f1, QFlags<Flags::enum_type> f2) \
     156             : { return f2 | f1; } Q_DECLARE_INCOMPATIBLE_FLAGS(Flags)
     157             : 
     158             : 
     159             : #else /* Q_NO_TYPESAFE_FLAGS */
     160             : 
     161             : #define Q_DECLARE_FLAGS(Flags, Enum)\
     162             : typedef uint Flags;
     163             : #define Q_DECLARE_OPERATORS_FOR_FLAGS(Flags)
     164             : 
     165             : #endif /* Q_NO_TYPESAFE_FLAGS */
     166             : 
     167             : QT_END_NAMESPACE
     168             : 
     169             : #endif // QFLAGS_H

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