Source/JavaScriptCore/runtime/JSArrayBufferConstructor.h

/*
 * Copyright (C) 2013-2018 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.
 *
 * 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. 
 */

#pragma once

#include "ArrayBuffer.h"
#include "InternalFunction.h"

namespace JSC {

class JSArrayBufferPrototype;
class GetterSetter;

template<ArrayBufferSharingMode sharingMode>
class JSGenericArrayBufferConstructor final : public InternalFunction {
public:
    using Base = InternalFunction;

protected:
    JSGenericArrayBufferConstructor(VM&, Structure*);
    void finishCreation(VM&, JSArrayBufferPrototype*, GetterSetter* speciesSymbol);

    static EncodedJSValue JSC_HOST_CALL constructArrayBuffer(JSGlobalObject*, CallFrame*);

public:
    static JSGenericArrayBufferConstructor* create(VM& vm, Structure* structure, JSArrayBufferPrototype* prototype, GetterSetter* speciesSymbol)
    {
        JSGenericArrayBufferConstructor* result =
            new (NotNull, allocateCell<JSGenericArrayBufferConstructor>(vm.heap)) JSGenericArrayBufferConstructor(vm, structure);
        result->finishCreation(vm, prototype, speciesSymbol);
        return result;
    }

    static Structure* createStructure(VM&, JSGlobalObject*, JSValue prototype);
    
    static const ClassInfo s_info; // This is never accessed directly, since that would break linkage on some compilers.
    static const ClassInfo* info();
};

using JSArrayBufferConstructor = JSGenericArrayBufferConstructor<ArrayBufferSharingMode::Default>;
using JSSharedArrayBufferConstructor = JSGenericArrayBufferConstructor<ArrayBufferSharingMode::Shared>;
static_assert(sizeof(JSArrayBufferConstructor::Base) == sizeof(JSArrayBufferConstructor), "");
static_assert(sizeof(JSSharedArrayBufferConstructor::Base) == sizeof(JSSharedArrayBufferConstructor), "");

} // namespace JSC