diff options
Diffstat (limited to 'src/corelib/kernel/qvariant_p.h')
-rw-r--r-- | src/corelib/kernel/qvariant_p.h | 73 |
1 files changed, 20 insertions, 53 deletions
diff --git a/src/corelib/kernel/qvariant_p.h b/src/corelib/kernel/qvariant_p.h index 337e1406ec..d01f386032 100644 --- a/src/corelib/kernel/qvariant_p.h +++ b/src/corelib/kernel/qvariant_p.h @@ -1,32 +1,38 @@ /**************************************************************************** ** -** Copyright (C) 2015 The Qt Company Ltd. +** Copyright (C) 2016 The Qt Company Ltd. ** Copyright (C) 2016 Intel Corporation. -** Contact: http://www.qt.io/licensing/ +** Contact: https://www.qt.io/licensing/ ** ** This file is part of the QtCore module of the Qt Toolkit. ** -** $QT_BEGIN_LICENSE:LGPL21$ +** $QT_BEGIN_LICENSE:LGPL$ ** 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 The Qt Company. For licensing terms -** and conditions see http://www.qt.io/terms-conditions. For further -** information use the contact form at http://www.qt.io/contact-us. +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/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 or version 3 as published by the Free -** Software Foundation and appearing in the file LICENSE.LGPLv21 and -** LICENSE.LGPLv3 included in the packaging of this file. Please review the -** following information to ensure the GNU Lesser General Public License -** requirements will be met: https://www.gnu.org/licenses/lgpl.html and -** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. ** -** As a special exception, The Qt Company gives you certain additional -** rights. These rights are described in The Qt Company 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 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. ** ** $QT_END_LICENSE$ ** @@ -222,7 +228,6 @@ class QVariantIsNull /// \internal /// This class checks if a type T has method called isNull. Result is kept in the Value property /// TODO Can we somehow generalize it? A macro version? -#if defined(Q_COMPILER_DECLTYPE) // C++11 version template<typename T> class HasIsNullMethod { struct Yes { char unused[1]; }; @@ -234,44 +239,6 @@ class QVariantIsNull public: static const bool Value = (sizeof(test<T>(0)) == sizeof(Yes)); }; -#elif defined(Q_CC_MSVC) && _MSC_VER >= 1400 && !defined(Q_CC_INTEL) // MSVC 2005, 2008 version: no decltype, but 'sealed' classes (>=2010 has decltype) - template<typename T> - class HasIsNullMethod { - struct Yes { char unused[1]; }; - struct No { char unused[2]; }; - Q_STATIC_ASSERT(sizeof(Yes) != sizeof(No)); - - template<class C> static Yes test(char (*)[(&C::isNull == 0) + 1]); - template<class C> static No test(...); - public: - static const bool Value = (sizeof(test<T>(0)) == sizeof(Yes)); - }; -#else // C++98 version (doesn't work for final classes) - template<typename T, bool IsClass = QTypeInfo<T>::isComplex> - class HasIsNullMethod - { - struct Yes { char unused[1]; }; - struct No { char unused[2]; }; - Q_STATIC_ASSERT(sizeof(Yes) != sizeof(No)); - - struct FallbackMixin { bool isNull() const; }; - struct Derived : public T, public FallbackMixin {}; // <- doesn't work for final classes - template<class C, C> struct TypeCheck {}; - - template<class C> static Yes test(...); - template<class C> static No test(TypeCheck<bool (FallbackMixin::*)() const, &C::isNull> *); - public: - static const bool Value = (sizeof(test<Derived>(0)) == sizeof(Yes)); - }; - - // We need to exclude primitive types as they won't compile with HasIsNullMethod::Check classes - // anyway it is not a problem as the types do not have isNull method. - template<typename T> - class HasIsNullMethod<T, /* IsClass = */ false> { - public: - static const bool Value = false; - }; -#endif // TODO This part should go to autotests during HasIsNullMethod generalization. Q_STATIC_ASSERT(!HasIsNullMethod<bool>::Value); |