Source/JavaScriptCore/runtime/JSArrayIterator.cpp

/*
 * Copyright (C) 2020 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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#include "config.h"
#include "JSArrayIterator.h"

#include "JSCInlines.h"
#include "JSInternalFieldObjectImplInlines.h"

namespace JSC {

const ClassInfo JSArrayIterator::s_info = { "ArrayIterator", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSArrayIterator) };

JSArrayIterator* JSArrayIterator::create(VM& vm, Structure* structure, JSObject* iteratedObject, JSValue kind)
{
    ASSERT(kind.asUInt32() <= static_cast<uint32_t>(IterationKind::Entries));
    JSArrayIterator* iterator = new (NotNull, allocateCell<JSArrayIterator>(vm.heap)) JSArrayIterator(vm, structure);
    iterator->finishCreation(vm);
    iterator->internalField(Field::IteratedObject).set(vm, iterator, iteratedObject);
    iterator->internalField(Field::Kind).set(vm, iterator, kind);
    return iterator;
}

JSArrayIterator* JSArrayIterator::createWithInitialValues(VM& vm, Structure* structure)
{
    JSArrayIterator* iterator = new (NotNull, allocateCell<JSArrayIterator>(vm.heap)) JSArrayIterator(vm, structure);
    iterator->finishCreation(vm);
    return iterator;
}

Structure* JSArrayIterator::createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
    return Structure::create(vm, globalObject, prototype, TypeInfo(JSArrayIteratorType, StructureFlags), info());
}

JSArrayIterator::JSArrayIterator(VM& vm, Structure* structure)
    : Base(vm, structure)
{
}

void JSArrayIterator::finishCreation(VM& vm)
{
    Base::finishCreation(vm);
    auto values = initialValues();
    for (unsigned index = 0; index < values.size(); ++index)
        Base::internalField(index).set(vm, this, values[index]);
}

void JSArrayIterator::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    auto* thisObject = jsCast<JSArrayIterator*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);
}

} // namespace JSC