1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtQml 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 The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/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 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QV4VARIANTOBJECT_P_H 41 #define QV4VARIANTOBJECT_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtCore/qglobal.h> 55 #include <QtQml/qqmllist.h> 56 #include <QtCore/qvariant.h> 57 58 #include <private/qv4value_p.h> 59 #include <private/qv4object_p.h> 60 61 QT_BEGIN_NAMESPACE 62 63 namespace QV4 { 64 65 namespace Heap { 66 67 struct VariantObject : Object 68 { 69 void init(); 70 void init(const QVariant &value); destroyVariantObject71 void destroy() { 72 Q_ASSERT(scarceData); 73 if (isScarce()) 74 addVmePropertyReference(); 75 delete scarceData; 76 Object::destroy(); 77 } 78 bool isScarce() const; 79 int vmePropertyReferenceCount; 80 dataVariantObject81 const QVariant &data() const { return scarceData->data; } dataVariantObject82 QVariant &data() { return scarceData->data; } 83 addVmePropertyReferenceVariantObject84 void addVmePropertyReference() { scarceData->node.remove(); } removeVmePropertyReferenceVariantObject85 void removeVmePropertyReference() { internalClass->engine->scarceResources.insert(scarceData); } 86 87 private: 88 ExecutionEngine::ScarceResourceData *scarceData; 89 }; 90 91 } 92 93 struct VariantObject : Object 94 { 95 V4_OBJECT2(VariantObject, Object) 96 V4_PROTOTYPE(variantPrototype) 97 V4_NEEDS_DESTROY 98 99 void addVmePropertyReference() const; 100 void removeVmePropertyReference() const; 101 102 protected: 103 static bool virtualIsEqualTo(Managed *m, Managed *other); 104 }; 105 106 struct VariantPrototype : VariantObject 107 { 108 public: 109 V4_PROTOTYPE(objectPrototype) 110 void init(); 111 112 static ReturnedValue method_preserve(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc); 113 static ReturnedValue method_destroy(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); 114 static ReturnedValue method_toString(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); 115 static ReturnedValue method_valueOf(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); 116 }; 117 118 } 119 120 QT_END_NAMESPACE 121 122 #endif 123 124