Source/JavaScriptCore/runtime/NativeErrorConstructor.h

/*
 *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
 *  Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 */

#ifndef NativeErrorConstructor_h
#define NativeErrorConstructor_h

#include "InternalFunction.h"
#include "NativeErrorPrototype.h"

namespace JSC {

    class ErrorInstance;
    class FunctionPrototype;
    class NativeErrorPrototype;

    class NativeErrorConstructor : public InternalFunction {
    public:
        typedef InternalFunction Base;

        static NativeErrorConstructor* create(VM& vm, JSGlobalObject* globalObject, Structure* structure, Structure* prototypeStructure, const String& name)
        {
            NativeErrorConstructor* constructor = new (NotNull, allocateCell<NativeErrorConstructor>(vm.heap)) NativeErrorConstructor(vm, structure);
            constructor->finishCreation(vm, globalObject, prototypeStructure, name);
            return constructor;
        }
        
        DECLARE_INFO;

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

        Structure* errorStructure() { return m_errorStructure.get(); }

    protected:
        void finishCreation(VM& vm, JSGlobalObject* globalObject, Structure* prototypeStructure, const String& name)
        {
            Base::finishCreation(vm, name);
            ASSERT(inherits(info()));

            NativeErrorPrototype* prototype = NativeErrorPrototype::create(vm, globalObject, prototypeStructure, name, this);

            putDirect(vm, vm.propertyNames->length, jsNumber(1), DontDelete | ReadOnly | DontEnum); // ECMA 15.11.7.5
            putDirect(vm, vm.propertyNames->prototype, prototype, DontDelete | ReadOnly | DontEnum);
            m_errorStructure.set(vm, this, ErrorInstance::createStructure(vm, globalObject, prototype));
            ASSERT(m_errorStructure);
            ASSERT(m_errorStructure->isObject());
        }

    private:
        NativeErrorConstructor(VM&, Structure*);
        static const unsigned StructureFlags = OverridesVisitChildren | InternalFunction::StructureFlags;
        static ConstructType getConstructData(JSCell*, ConstructData&);
        static CallType getCallData(JSCell*, CallData&);
        static void visitChildren(JSCell*, SlotVisitor&);

        WriteBarrier<Structure> m_errorStructure;
    };

} // namespace JSC

#endif // NativeErrorConstructor_h