Source/WebCore/bindings/js/JSHistoryCustom.cpp

/*
 * Copyright (C) 2008-2018 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.
 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "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 OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#include "config.h"
#include "JSHistory.h"

#include "SerializedScriptValue.h"
#include <JavaScriptCore/JSCInlines.h>

namespace WebCore {

using namespace JSC;

JSValue JSHistory::state(ExecState& state) const
{
    return cachedPropertyValue(state, *this, wrapped().cachedState(), [this, &state] {
        auto* serialized = wrapped().state();
        return serialized ? serialized->deserialize(state, globalObject()) : jsNull();
    });
}

void JSHistory::visitAdditionalChildren(SlotVisitor& visitor)
{
    wrapped().cachedState().visit(visitor);
}

} // namespace WebCore