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39 #ifndef QV4ARGUMENTSOBJECTS_H
40 #define QV4ARGUMENTSOBJECTS_H
41
42 //
43 // W A R N I N G
44 // -------------
45 //
46 // This file is not part of the Qt API. It exists purely as an
47 // implementation detail. This header file may change from version to
48 // version without notice, or even be removed.
49 //
50 // We mean it.
51 //
52
53 #include "qv4object_p.h"
54 #include "qv4functionobject_p.h"
55
56 QT_BEGIN_NAMESPACE
57
58 namespace QV4 {
59
60 namespace Heap {
61
62 #define ArgumentsObjectMembers(class, Member) \
63 Member(class, Pointer, CallContext *, context) \
64 Member(class, NoMark, bool, fullyCreated) \
65 Member(class, NoMark, uint, argCount) \
66 Member(class, NoMark, quint64, mapped)
67
DECLARE_HEAP_OBJECT(ArgumentsObject,Object)68 DECLARE_HEAP_OBJECT(ArgumentsObject, Object) {
69 DECLARE_MARKOBJECTS(ArgumentsObject);
70 enum {
71 LengthPropertyIndex = 0,
72 SymbolIteratorPropertyIndex = 1,
73 CalleePropertyIndex = 2
74 };
75 void init(CppStackFrame *frame);
76 };
77
78 #define StrictArgumentsObjectMembers(class, Member)
79
DECLARE_HEAP_OBJECT(StrictArgumentsObject,Object)80 DECLARE_HEAP_OBJECT(StrictArgumentsObject, Object) {
81 enum {
82 LengthPropertyIndex = 0,
83 SymbolIteratorPropertyIndex = 1,
84 CalleePropertyIndex = 2,
85 CalleeSetterPropertyIndex = 3
86 };
87 void init(CppStackFrame *frame);
88 };
89
90 }
91
92 struct ArgumentsObject: Object {
V4_OBJECT2ArgumentsObject93 V4_OBJECT2(ArgumentsObject, Object)
94 Q_MANAGED_TYPE(ArgumentsObject)
95
96 Heap::CallContext *context() const { return d()->context; }
fullyCreatedArgumentsObject97 bool fullyCreated() const { return d()->fullyCreated; }
98
isNonStrictArgumentsObjectArgumentsObject99 static bool isNonStrictArgumentsObject(Managed *m) {
100 return m->vtable() == staticVTable();
101 }
102
103 static bool virtualDefineOwnProperty(Managed *m, PropertyKey id, const Property *desc, PropertyAttributes attrs);
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 static bool virtualDeleteProperty(Managed *m, PropertyKey id);
107 static PropertyAttributes virtualGetOwnProperty(const Managed *m, PropertyKey id, Property *p);
108 static qint64 virtualGetLength(const Managed *m);
109 static OwnPropertyKeyIterator *virtualOwnPropertyKeys(const Object *m, Value *target);
110
111 void fullyCreate();
112
113 // There's a slight hack here, as this limits the amount of mapped arguments to 64, but that should be
114 // more than enough for all practical uses of arguments
isMappedArgumentsObject115 bool isMapped(uint arg) const {
116 return arg < 64 && (d()->mapped & (1ull << arg));
117 }
118
removeMappingArgumentsObject119 void removeMapping(uint arg) {
120 if (arg < 64)
121 (d()->mapped &= ~(1ull << arg));
122 }
123
124 };
125
126 struct StrictArgumentsObject : Object {
127 V4_OBJECT2(StrictArgumentsObject, Object)
128 Q_MANAGED_TYPE(ArgumentsObject)
129 };
130
131 }
132
133 QT_END_NAMESPACE
134
135 #endif
136
137