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++ // Copyright (C) 2018 Crimson AS <info@crimson.no>
++ // 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/qv4estable_p.h>
++ #include <private/qv4setiterator_p.h>
++ #include <private/qv4setobject_p.h>
++ #include <private/qv4symbol_p.h>
++
++ using namespace QV4;
++
++ DEFINE_OBJECT_VTABLE(SetIteratorObject);
++
++ void SetIteratorPrototype::init(ExecutionEngine *e)
++ {
++ defineDefaultProperty(QStringLiteral("next"), method_next, 0);
++
++ Scope scope(e);
++ ScopedString val(scope, e->newString(QLatin1String("Set Iterator")));
++ defineReadonlyConfigurableProperty(e->symbol_toStringTag(), val);
++ }
++
++ ReturnedValue SetIteratorPrototype::method_next(const FunctionObject *b, const Value *that, const Value *, int)
++ {
++ Scope scope(b);
++ const SetIteratorObject *thisObject = that->as<SetIteratorObject>();
++ if (!thisObject)
++ return scope.engine->throwTypeError(QLatin1String("Not a Set Iterator instance"));
++
++ Scoped<SetObject> s(scope, thisObject->d()->iteratedSet);
++ uint index = thisObject->d()->setNextIndex;
++ IteratorKind itemKind = thisObject->d()->iterationKind;
++
++ if (!s) {
++ QV4::Value undefined = Value::undefinedValue();
++ return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
++ }
++
++ Value *arguments = scope.constructUndefined(2);
++
++ while (index < s->d()->esTable->size()) {
++ s->d()->esTable->iterate(index, &arguments[0], &arguments[1]);
++ thisObject->d()->setNextIndex = index + 1;
++
++ if (itemKind == KeyValueIteratorKind) {
++ ScopedArrayObject resultArray(scope, scope.engine->newArrayObject());
++ resultArray->arrayReserve(2);
++ resultArray->arrayPut(0, arguments[0]);
++ resultArray->arrayPut(1, arguments[0]); // yes, the key is repeated.
++ resultArray->setArrayLengthUnchecked(2);
++
++ return IteratorPrototype::createIterResultObject(scope.engine, resultArray, false);
++ }
++
++ return IteratorPrototype::createIterResultObject(scope.engine, arguments[0], false);
++ }
++
++ thisObject->d()->iteratedSet.set(scope.engine, nullptr);
++ QV4::Value undefined = Value::undefinedValue();
++ return IteratorPrototype::createIterResultObject(scope.engine, undefined, true);
++ }
++