Source/JavaScriptCore/runtime/JSModuleNamespaceObject.h

/*
 * Copyright (C) 2015 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.
 */

#ifndef JSModuleNamespaceObject_h
#define JSModuleNamespaceObject_h

#include "JSDestructibleObject.h"
#include <wtf/ListHashSet.h>

namespace JSC {

class JSModuleRecord;

class JSModuleNamespaceObject : public JSDestructibleObject {
public:
    typedef JSDestructibleObject Base;
    static const unsigned StructureFlags = Base::StructureFlags | OverridesGetOwnPropertySlot | OverridesGetPropertyNames;

    static JSModuleNamespaceObject* create(ExecState* exec, JSGlobalObject* globalObject, Structure* structure, JSModuleRecord* moduleRecord, const IdentifierSet& exports)
    {
        JSModuleNamespaceObject* object = new (NotNull, allocateCell<JSModuleNamespaceObject>(exec->vm().heap)) JSModuleNamespaceObject(exec->vm(), structure);
        object->finishCreation(exec->vm(), globalObject, moduleRecord, exports);
        return object;
    }

    JS_EXPORT_PRIVATE static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
    JS_EXPORT_PRIVATE static void put(JSCell*, ExecState*, PropertyName, JSValue, PutPropertySlot&);
    JS_EXPORT_PRIVATE static void putByIndex(JSCell*, ExecState*, unsigned propertyName, JSValue, bool shouldThrow);
    JS_EXPORT_PRIVATE static bool deleteProperty(JSCell*, ExecState*, PropertyName);
    JS_EXPORT_PRIVATE static void getOwnPropertyNames(JSObject*, ExecState*, PropertyNameArray&, EnumerationMode);
    JS_EXPORT_PRIVATE static bool defineOwnProperty(JSObject*, ExecState*, PropertyName, const PropertyDescriptor&, bool shouldThrow);

    DECLARE_EXPORT_INFO;

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

    JSModuleRecord* moduleRecord() { return m_moduleRecord.get(); }

protected:
    JS_EXPORT_PRIVATE void finishCreation(VM&, JSGlobalObject*, JSModuleRecord*, const IdentifierSet& exports);
    JS_EXPORT_PRIVATE JSModuleNamespaceObject(VM&, Structure*);

private:
    static void destroy(JSCell*);
    static void visitChildren(JSCell*, SlotVisitor&);

    typedef WTF::ListHashSet<RefPtr<UniquedStringImpl>, IdentifierRepHash> OrderedIdentifierSet;

    OrderedIdentifierSet m_exports;
    WriteBarrier<JSModuleRecord> m_moduleRecord;
};

} // namespace JSC

#endif // JSModuleNamespaceObject_h