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39
40 #include <private/qv4iterator_p.h>
41 #include <private/qv4estable_p.h>
42 #include <private/qv4setiterator_p.h>
43 #include <private/qv4setobject_p.h>
44 #include <private/qv4symbol_p.h>
45
46 using namespace QV4;
47
48 DEFINE_OBJECT_VTABLE(SetIteratorObject);
49
init(ExecutionEngine * e)50 void SetIteratorPrototype::init(ExecutionEngine *e)
51 {
52 defineDefaultProperty(QStringLiteral("next"), method_next, 0);
53
54 Scope scope(e);
55 ScopedString val(scope, e->newString(QLatin1String("Set Iterator")));
56 defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val);
57 }
58
method_next(const FunctionObject * b,const Value * that,const Value *,int)59 ReturnedValue SetIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int)
60 {
61 Scope scope(b);
62 const SetIteratorObject *thisObject = that->as<SetIteratorObject>();
63 if (!thisObject)
64 return scope.engine->throwTypeError(QLatin1String("Not a Set Iterator instance"));
65
66 Scoped<SetObject> s(scope, thisObject->d()->iteratedSet);
67 uint index = thisObject->d()->setNextIndex;
68 IteratorKind itemKind = thisObject->d()->iterationKind;
69
70 if (!s) {
71 QV4::Value undefined = Value::undefinedValue();
72 return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
73 }
74
75 Value *arguments = scope.alloc(2);
76
77 while (index < s->d()->esTable->size()) {
78 s->d()->esTable->iterate(index, &arguments[0], &arguments[1]);
79 thisObject->d()->setNextIndex = index + 1;
80
81 if (itemKind == KeyValueIteratorKind) {
82 ScopedArrayObject resultArray(scope, scope.engine->newArrayObject());
83 resultArray->arrayReserve(2);
84 resultArray->arrayPut(0, arguments[0]);
85 resultArray->arrayPut(1, arguments[0]); // yes, the key is repeated.
86 resultArray->setArrayLengthUnchecked(2);
87
88 return IteratorPrototype::createIterResultObject(scope.engine, resultArray, false);
89 }
90
91 return IteratorPrototype::createIterResultObject(scope.engine, arguments[0], false);
92 }
93
94 thisObject->d()->iteratedSet.set(scope.engine, nullptr);
95 QV4::Value undefined = Value::undefinedValue();
96 return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
97 }
98
99