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 QV4QMLCONTEXT_P_H
41 #define QV4QMLCONTEXT_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 <private/qtqmlglobal_p.h>
56 
57 #include <private/qv4object_p.h>
58 #include <private/qv4context_p.h>
59 #include <private/qqmlcontext_p.h>
60 
61 QT_BEGIN_NAMESPACE
62 
63 namespace QV4 {
64 
65 struct QQmlContextWrapper;
66 
67 namespace Heap {
68 
69 #define QQmlContextWrapperMembers(class, Member) \
70     Member(class, Pointer, Module *, module)
71 
DECLARE_HEAP_OBJECT(QQmlContextWrapper,Object)72 DECLARE_HEAP_OBJECT(QQmlContextWrapper, Object) {
73     DECLARE_MARKOBJECTS(QQmlContextWrapper);
74 
75     void init(QQmlContextData *context, QObject *scopeObject);
76     void destroy();
77 
78     QQmlContextDataRef *context;
79     QQmlQPointer<QObject> scopeObject;
80 };
81 
82 #define QmlContextMembers(class, Member)
83 
DECLARE_HEAP_OBJECT(QmlContext,ExecutionContext)84 DECLARE_HEAP_OBJECT(QmlContext, ExecutionContext) {
85     DECLARE_MARKOBJECTS(QmlContext);
86 
87     QQmlContextWrapper *qml() { return static_cast<QQmlContextWrapper *>(activation.get()); }
88     void init(QV4::ExecutionContext *outerContext, QV4::QQmlContextWrapper *qml);
89 };
90 
91 }
92 
93 struct Q_QML_EXPORT QQmlContextWrapper : Object
94 {
V4_OBJECT2QQmlContextWrapper95     V4_OBJECT2(QQmlContextWrapper, Object)
96     V4_NEEDS_DESTROY
97     V4_INTERNALCLASS(QmlContextWrapper)
98 
99     inline QObject *getScopeObject() const { return d()->scopeObject; }
getContextQQmlContextWrapper100     inline QQmlContextData *getContext() const { return *d()->context; }
101 
102     static ReturnedValue getPropertyAndBase(const QQmlContextWrapper *resource, PropertyKey id, const Value *receiver,
103                                             bool *hasProperty, Value *base, Lookup *lookup = nullptr);
104     static ReturnedValue virtualGet(const Managed *m, PropertyKey id, const Value *receiver, bool *hasProperty);
105     static bool virtualPut(Managed *m, PropertyKey id, const Value &value, Value *receiver);
106 
107     static ReturnedValue resolveQmlContextPropertyLookupGetter(Lookup *l, ExecutionEngine *engine, Value *base);
108     static ReturnedValue lookupScript(Lookup *l, ExecutionEngine *engine, Value *base);
109     static ReturnedValue lookupSingleton(Lookup *l, ExecutionEngine *engine, Value *base);
110     static ReturnedValue lookupIdObject(Lookup *l, ExecutionEngine *engine, Value *base);
111     static ReturnedValue lookupScopeObjectProperty(Lookup *l, ExecutionEngine *engine, Value *base);
112     static ReturnedValue lookupContextObjectProperty(Lookup *l, ExecutionEngine *engine, Value *base);
113     static ReturnedValue lookupInGlobalObject(Lookup *l, ExecutionEngine *engine, Value *base);
114     static ReturnedValue lookupInParentContextHierarchy(Lookup *l, ExecutionEngine *engine, Value *base);
115     static ReturnedValue lookupType(Lookup *l, ExecutionEngine *engine, Value *base);
116 };
117 
118 struct Q_QML_EXPORT QmlContext : public ExecutionContext
119 {
120     V4_MANAGED(QmlContext, ExecutionContext)
121     V4_INTERNALCLASS(QmlContext)
122 
123     static Heap::QmlContext *create(QV4::ExecutionContext *parent, QQmlContextData *context, QObject *scopeObject);
124 
qmlScopeQmlContext125     QObject *qmlScope() const {
126         return d()->qml()->scopeObject;
127     }
qmlContextQmlContext128     QQmlContextData *qmlContext() const {
129         return *d()->qml()->context;
130     }
131 };
132 
133 }
134 
135 QT_END_NAMESPACE
136 
137 #endif
138 
139