1// Copyright (C) 2018 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3#ifndef QV4PROXY_P_H
4#define QV4PROXY_P_H
5
6//
7// W A R N I N G
8// -------------
9//
10// This file is not part of the Qt API. It exists purely as an
11// implementation detail. This header file may change from version to
12// version without notice, or even be removed.
13//
14// We mean it.
15//
16
17#include "qv4object_p.h"
18#include "qv4functionobject_p.h"
19
20QT_BEGIN_NAMESPACE
21
22namespace QV4 {
23
24namespace Heap {
25
26#define ProxyObjectMembers(class, Member) \
27 Member(class, Pointer, Object *, target) \
28 Member(class, Pointer, Object *, handler)
29
30DECLARE_HEAP_OBJECT(ProxyObject, FunctionObject) {
31 DECLARE_MARKOBJECTS(ProxyObject)
32
33 void init(const QV4::Object *target, const QV4::Object *handler);
34};
35
36struct ProxyFunctionObject : ProxyObject {
37 void init(const QV4::FunctionObject *target, const QV4::Object *handler);
38};
39
40struct ProxyConstructorObject : ProxyFunctionObject {};
41
42#define ProxyMembers(class, Member) \
43 Member(class, Pointer, Symbol *, revokableProxySymbol) \
44
45DECLARE_HEAP_OBJECT(Proxy, FunctionObject) {
46 DECLARE_MARKOBJECTS(Proxy)
47
48 void init(ExecutionEngine *engine);
49};
50
51}
52
53/*
54 * The inheritance from FunctionObject is a hack. Regular proxy objects are no function objects.
55 * But this helps implement the proxy for function objects, where we need this and thus gives us
56 * all the virtual methods from ProxyObject without having to duplicate them.
57 *
58 * But it does require a few hacks to make sure we don't recognize regular proxy objects as function
59 * objects in the runtime.
60 */
61struct ProxyObject : FunctionObject {
62 V4_OBJECT2(ProxyObject, Object)
63 Q_MANAGED_TYPE(ProxyObject)
64 V4_INTERNALCLASS(ProxyObject)
65
66 static ReturnedValue virtualGet(const Managed *m, PropertyKey id, const Value *receiver, bool *hasProperty);
67 static bool virtualPut(Managed *m, PropertyKey id, const Value &value, Value *receiver);
68 static bool virtualDeleteProperty(Managed *m, PropertyKey id);
69 static bool virtualHasProperty(const Managed *m, PropertyKey id);
70 static PropertyAttributes virtualGetOwnProperty(const Managed *m, PropertyKey id, Property *p);
71 static bool virtualDefineOwnProperty(Managed *m, PropertyKey id, const Property *p, PropertyAttributes attrs);
72 static bool virtualIsExtensible(const Managed *m);
73 static bool virtualPreventExtensions(Managed *);
74 static Heap::Object *virtualGetPrototypeOf(const Managed *);
75 static bool virtualSetPrototypeOf(Managed *, const Object *);
76 static OwnPropertyKeyIterator *virtualOwnPropertyKeys(const Object *m, Value *iteratorTarget);
77};
78
79struct ProxyFunctionObject : ProxyObject {
80 V4_OBJECT2(ProxyFunctionObject, FunctionObject)
81 Q_MANAGED_TYPE(ProxyObject)
82 V4_INTERNALCLASS(ProxyFunctionObject)
83
84 static ReturnedValue virtualCall(const FunctionObject *f, const Value *thisObject, const Value *argv, int argc);
85};
86
87struct ProxyConstructorObject : ProxyFunctionObject {
88 V4_OBJECT2(ProxyConstructorObject, ProxyFunctionObject)
89
90 static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *);
91};
92
93struct Proxy : FunctionObject
94{
95 V4_OBJECT2(Proxy, FunctionObject)
96
97 static ReturnedValue virtualCallAsConstructor(const FunctionObject *f, const Value *argv, int argc, const Value *);
98 static ReturnedValue virtualCall(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
99
100 static ReturnedValue method_revocable(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
101
102 static ReturnedValue method_revoke(const FunctionObject *, const Value *thisObject, const Value *argv, int argc);
103};
104
105}
106
107QT_END_NAMESPACE
108
109#endif // QV4ECMAOBJECTS_P_H
110

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source code of qtdeclarative/src/qml/jsruntime/qv4proxy_p.h