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 #include "qqmlvme_p.h" 41 42 #include "qqmlboundsignal_p.h" 43 #include "qqmlstringconverters_p.h" 44 #include <private/qmetaobjectbuilder_p.h> 45 #include "qqmldata_p.h" 46 #include "qqml.h" 47 #include "qqmlinfo.h" 48 #include "qqmlcustomparser_p.h" 49 #include "qqmlengine.h" 50 #include "qqmlcontext.h" 51 #include "qqmlcomponent.h" 52 #include "qqmlcomponentattached_p.h" 53 #include "qqmlbinding_p.h" 54 #include "qqmlengine_p.h" 55 #include "qqmlcomponent_p.h" 56 #include "qqmlvmemetaobject_p.h" 57 #include "qqmlcontext_p.h" 58 #include "qqmlglobal_p.h" 59 #include <private/qfinitestack_p.h> 60 #include "qqmlscriptstring.h" 61 #include "qqmlscriptstring_p.h" 62 #include "qqmlpropertyvalueinterceptor_p.h" 63 #include "qqmlvaluetypeproxybinding_p.h" 64 #include "qqmlexpression_p.h" 65 66 #include <QStack> 67 #include <QPointF> 68 #include <QSizeF> 69 #include <QRectF> 70 #include <QtCore/qdebug.h> 71 #include <QtCore/qvarlengtharray.h> 72 #include <QtCore/qcoreapplication.h> 73 #include <QtCore/qdatetime.h> 74 #include <QtCore/qvarlengtharray.h> 75 #include <QtQml/qjsvalue.h> 76 77 QT_BEGIN_NAMESPACE 78 79 using namespace QQmlVMETypes; 80 81 bool QQmlVME::s_enableComponentComplete = true; 82 enableComponentComplete()83void QQmlVME::enableComponentComplete() 84 { 85 s_enableComponentComplete = true; 86 } 87 disableComponentComplete()88void QQmlVME::disableComponentComplete() 89 { 90 s_enableComponentComplete = false; 91 } 92 componentCompleteEnabled()93bool QQmlVME::componentCompleteEnabled() 94 { 95 return s_enableComponentComplete; 96 } 97 QQmlVMEGuard()98QQmlVMEGuard::QQmlVMEGuard() 99 : m_objectCount(0), m_objects(nullptr), m_contextCount(0), m_contexts(nullptr) 100 { 101 } 102 ~QQmlVMEGuard()103QQmlVMEGuard::~QQmlVMEGuard() 104 { 105 clear(); 106 } 107 guard(QQmlObjectCreator * creator)108void QQmlVMEGuard::guard(QQmlObjectCreator *creator) 109 { 110 clear(); 111 112 QFiniteStack<QPointer<QObject> > &objects = creator->allCreatedObjects(); 113 m_objectCount = objects.count(); 114 m_objects = new QPointer<QObject>[m_objectCount]; 115 for (int ii = 0; ii < m_objectCount; ++ii) 116 m_objects[ii] = objects[ii]; 117 118 m_contextCount = 1; 119 m_contexts = new QQmlGuardedContextData[m_contextCount]; 120 m_contexts[0] = creator->parentContextData(); 121 } 122 clear()123void QQmlVMEGuard::clear() 124 { 125 delete [] m_objects; 126 delete [] m_contexts; 127 128 m_objectCount = 0; 129 m_objects = nullptr; 130 m_contextCount = 0; 131 m_contexts = nullptr; 132 } 133 isOK() const134bool QQmlVMEGuard::isOK() const 135 { 136 for (int ii = 0; ii < m_objectCount; ++ii) 137 if (m_objects[ii].isNull()) 138 return false; 139 140 for (int ii = 0; ii < m_contextCount; ++ii) 141 if (m_contexts[ii].isNull() || !m_contexts[ii]->engine) 142 return false; 143 144 return true; 145 } 146 147 QT_END_NAMESPACE 148