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()83 void QQmlVME::enableComponentComplete()
84 {
85     s_enableComponentComplete = true;
86 }
87 
disableComponentComplete()88 void QQmlVME::disableComponentComplete()
89 {
90     s_enableComponentComplete = false;
91 }
92 
componentCompleteEnabled()93 bool QQmlVME::componentCompleteEnabled()
94 {
95     return s_enableComponentComplete;
96 }
97 
QQmlVMEGuard()98 QQmlVMEGuard::QQmlVMEGuard()
99 : m_objectCount(0), m_objects(nullptr), m_contextCount(0), m_contexts(nullptr)
100 {
101 }
102 
~QQmlVMEGuard()103 QQmlVMEGuard::~QQmlVMEGuard()
104 {
105     clear();
106 }
107 
guard(QQmlObjectCreator * creator)108 void 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()123 void 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() const134 bool 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