Source/JavaScriptCore/runtime/JSStringIterator.cpp

/*
 * Copyright (C) 2015 Yusuke Suzuki <utatane.tea@gmail.com>.
 * Copyright (C) 2016-2021 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include "config.h"
#include "JSStringIterator.h"

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

namespace JSC {

const ClassInfo JSStringIterator::s_info = { "String Iterator", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSStringIterator) };

void JSStringIterator::finishCreation(VM& vm, JSString* iteratedString)
{
    Base::finishCreation(vm);
    ASSERT(inherits(vm, info()));
    internalField(Field::Index).set(vm, this, jsNumber(0));
    internalField(Field::IteratedString).set(vm, this, iteratedString);
}

JSStringIterator* JSStringIterator::clone(JSGlobalObject* globalObject)
{
    VM& vm = globalObject->vm();
    JSString* iteratedString = jsCast<JSString*>(this->iteratedString());
    auto* clone = JSStringIterator::create(vm, globalObject->stringIteratorStructure(), iteratedString);
    clone->internalField(Field::Index).set(vm, clone, this->index());
    return clone;
}

template<typename Visitor>
void JSStringIterator::visitChildrenImpl(JSCell* cell, Visitor& visitor)
{
    auto* thisObject = jsCast<JSStringIterator*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);
}

DEFINE_VISIT_CHILDREN(JSStringIterator);

} // namespace JSC