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++ // Copyright (C) 2017 Crimson AS <info@crimson.no>
++ // Copyright (C) 2018 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
++ // Qt-Security score:significant
++
++ #include <private/qv4iterator_p.h>
++ #include <private/qv4arrayiterator_p.h>
++ #include <private/qv4typedarray_p.h>
++ #include <private/qv4symbol_p.h>
++
++ using namespace QV4;
++
++ DEFINE_OBJECT_VTABLE(ArrayIteratorObject);
++
++ void ArrayIteratorPrototype::init(ExecutionEngine *e)
++ {
++ defineDefaultProperty(QStringLiteral("next"), method_next, 0);
++
++ Scope scope(e);
++ ScopedString val(scope, e->newString(QLatin1String("Array Iterator")));
++ defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val);
++ }
++
++ ReturnedValue ArrayIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int)
++ {
++ Scope scope(b);
++ const ArrayIteratorObject *thisObject = that->as<ArrayIteratorObject>();
++ if (!thisObject)
++ return scope.engine->throwTypeError(QLatin1String("Not an Array Iterator instance"));
++
++ ScopedObject a(scope, thisObject->d()->iteratedObject);
++ if (!a) {
++ QV4::Value undefined = Value::undefinedValue();
++ return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
++ }
++
++ quint32 index = thisObject->d()->nextIndex;
++ IteratorKind itemKind = thisObject->d()->iterationKind;
++
++ quint32 len = a->getLength();
++
++ if (index >= len) {
++ thisObject->d()->iteratedObject.set(scope.engine, nullptr);
++ QV4::Value undefined = Value::undefinedValue();
++ return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
++ }
++
++ thisObject->d()->nextIndex = index + 1;
++ if (itemKind == KeyIteratorKind) {
++ return IteratorPrototype::createIterResultObject(scope.engine, Value::fromInt32(index), false);
++ }
++
++ QV4::ScopedValue elementValue(scope, a->get(index));
++ CHECK_EXCEPTION();
++
++ if (itemKind == ValueIteratorKind) {
++ return IteratorPrototype::createIterResultObject(scope.engine, elementValue, false);
++ } else {
++ Q_ASSERT(itemKind == KeyValueIteratorKind);
++
++ ScopedArrayObject resultArray(scope, scope.engine->newArrayObject());
++ resultArray->arrayReserve(2);
++ resultArray->arrayPut(0, Value::fromInt32(index));
++ resultArray->arrayPut(1, elementValue);
++ resultArray->setArrayLengthUnchecked(2);
++
++ return IteratorPrototype::createIterResultObject(scope.engine, resultArray, false);
++ }
++ }
++