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39 | #ifndef QV4OBJECTITERATOR_H |
40 | #define QV4OBJECTITERATOR_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 "qv4global_p.h" |
54 | #include "qv4object_p.h" |
55 | |
56 | QT_BEGIN_NAMESPACE |
57 | |
58 | namespace QV4 { |
59 | |
60 | struct Q_QML_EXPORT ObjectIterator |
61 | { |
62 | enum Flags { |
63 | NoFlags = 0, |
64 | EnumerableOnly = 0x1, |
65 | WithSymbols = 0x2 |
66 | }; |
67 | |
68 | ExecutionEngine *engine; |
69 | Object *object; |
70 | OwnPropertyKeyIterator *iterator = nullptr; |
71 | uint flags; |
72 | |
73 | ObjectIterator(Scope &scope, const Object *o, uint flags) |
74 | { |
75 | engine = scope.engine; |
76 | object = static_cast<Object *>(scope.alloc()); |
77 | this->flags = flags; |
78 | object->setM(o ? o->m() : nullptr); |
79 | if (o) |
80 | iterator = object->ownPropertyKeys(target: object); |
81 | } |
82 | ~ObjectIterator() |
83 | { |
84 | delete iterator; |
85 | } |
86 | |
87 | PropertyKey next(Property *pd = nullptr, PropertyAttributes *attributes = nullptr); |
88 | ReturnedValue nextPropertyName(Value *value); |
89 | ReturnedValue nextPropertyNameAsString(Value *value); |
90 | ReturnedValue nextPropertyNameAsString(); |
91 | }; |
92 | |
93 | namespace Heap { |
94 | |
95 | #define ForInIteratorObjectMembers(class, Member) \ |
96 | Member(class, Pointer, Object *, object) \ |
97 | Member(class, Pointer, Object *, current) \ |
98 | Member(class, Pointer, Object *, target) \ |
99 | Member(class, NoMark, OwnPropertyKeyIterator *, iterator) |
100 | |
101 | DECLARE_HEAP_OBJECT(ForInIteratorObject, Object) { |
102 | void init(QV4::Object *o); |
103 | Value workArea[2]; |
104 | |
105 | static void markObjects(Heap::Base *that, MarkStack *markStack); |
106 | void destroy(); |
107 | }; |
108 | |
109 | } |
110 | |
111 | struct ForInIteratorPrototype : Object |
112 | { |
113 | V4_PROTOTYPE(iteratorPrototype) |
114 | void init(ExecutionEngine *engine); |
115 | |
116 | static ReturnedValue method_next(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc); |
117 | }; |
118 | |
119 | struct ForInIteratorObject: Object { |
120 | V4_OBJECT2(ForInIteratorObject, Object) |
121 | Q_MANAGED_TYPE(ForInIterator) |
122 | V4_PROTOTYPE(forInIteratorPrototype) |
123 | V4_NEEDS_DESTROY |
124 | |
125 | PropertyKey nextProperty() const; |
126 | }; |
127 | |
128 | inline |
129 | void Heap::ForInIteratorObject::init(QV4::Object *o) |
130 | { |
131 | Object::init(); |
132 | if (!o) |
133 | return; |
134 | object.set(e: o->engine(), newVal: o->d()); |
135 | current.set(e: o->engine(), newVal: o->d()); |
136 | Scope scope(o); |
137 | ScopedObject obj(scope); |
138 | iterator = o->ownPropertyKeys(target: obj.getRef()); |
139 | target.set(e: o->engine(), newVal: obj->d()); |
140 | } |
141 | |
142 | |
143 | } |
144 | |
145 | QT_END_NAMESPACE |
146 | |
147 | #endif |
148 | |