Source/WebCore/bindings/js/JSDOMWindowProperties.h

/*
 * Copyright (C) 2016-2019 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. 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 INC. 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; 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.
 */

#pragma once

#include "JSDOMWindow.h"
#include "JSDOMWrapper.h"

namespace WebCore {

class JSDOMWindowProperties final : public JSDOMObject {
public:
    using Base = JSDOMObject;
    static constexpr unsigned StructureFlags = Base::StructureFlags | JSC::GetOwnPropertySlotIsImpureForPropertyAbsence | JSC::InterceptsGetOwnPropertySlotByIndexEvenWhenLengthIsNotZero | JSC::OverridesGetOwnPropertySlot | JSC::IsImmutablePrototypeExoticObject;

    static constexpr bool needsDestruction = false;
    template<typename CellType, JSC::SubspaceAccess>
    static JSC::IsoSubspace* subspaceFor(JSC::VM& vm)
    {
        static_assert(CellType::destroy == JSC::JSCell::destroy, "JSDOMWindowProperties is not destructible actually");
        return subspaceForImpl(vm);
    }

    static JSDOMWindowProperties* create(JSC::Structure* structure, JSC::JSGlobalObject& globalObject)
    {
        JSDOMWindowProperties* ptr = new (NotNull, JSC::allocateCell<JSDOMWindowProperties>(globalObject.vm().heap)) JSDOMWindowProperties(structure, globalObject);
        ptr->finishCreation(globalObject);
        return ptr;
    }

    DECLARE_INFO;

    static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
    {
        return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info(), JSC::MayHaveIndexedAccessors);
    }

    static bool getOwnPropertySlot(JSC::JSObject*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::PropertySlot&);
    static bool getOwnPropertySlotByIndex(JSC::JSObject*, JSC::JSGlobalObject*, unsigned propertyName, JSC::PropertySlot&);
    static bool deleteProperty(JSC::JSCell*, JSC::JSGlobalObject*, JSC::PropertyName, JSC::DeletePropertySlot&);
    static bool deletePropertyByIndex(JSC::JSCell*, JSC::JSGlobalObject*, unsigned propertyName);
    static bool preventExtensions(JSC::JSObject*, JSC::JSGlobalObject*);
    static bool isExtensible(JSC::JSObject*, JSC::JSGlobalObject*);
    static bool defineOwnProperty(JSC::JSObject*, JSC::JSGlobalObject*, JSC::PropertyName, const JSC::PropertyDescriptor&, bool shouldThrow);

private:
    JSDOMWindowProperties(JSC::Structure* structure, JSC::JSGlobalObject& globalObject)
        : JSDOMObject(structure, globalObject)
    {
    }

    void finishCreation(JSC::JSGlobalObject&);
    static JSC::IsoSubspace* subspaceForImpl(JSC::VM&);
};

} // namespace WebCore