JSSymbolTableObject.cpp 3.3 KB
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/*
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 * Copyright (C) 2012, 2013 Apple Inc. All rights reserved.
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 *
 * 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 Computer, 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;
 * 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.
 */

#include "config.h"
#include "JSSymbolTableObject.h"

#include "JSActivation.h"
#include "JSGlobalObject.h"
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#include "JSNameScope.h"
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#include "Operations.h"
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#include "PropertyNameArray.h"

namespace JSC {

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void JSSymbolTableObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
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{
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    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(cell);
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    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
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    COMPILE_ASSERT(StructureFlags & OverridesVisitChildren, OverridesVisitChildrenWithoutSettingFlag);
    ASSERT(thisObject->structure()->typeInfo().overridesVisitChildren());
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    Base::visitChildren(thisObject, visitor);
    visitor.append(&thisObject->m_symbolTable);
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}

bool JSSymbolTableObject::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName)
{
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(cell);
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    if (thisObject->symbolTable()->contains(propertyName.publicName()))
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        return false;

    return JSObject::deleteProperty(thisObject, exec, propertyName);
}

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void JSSymbolTableObject::getOwnNonIndexPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
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{
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(object);
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    {
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        ConcurrentJITLocker locker(thisObject->symbolTable()->m_lock);
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        SymbolTable::Map::iterator end = thisObject->symbolTable()->end(locker);
        for (SymbolTable::Map::iterator it = thisObject->symbolTable()->begin(locker); it != end; ++it) {
            if (!(it->value.getAttributes() & DontEnum) || (mode == IncludeDontEnumProperties))
                propertyNames.add(Identifier(exec, it->key.get()));
        }
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    }
    
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    JSObject::getOwnNonIndexPropertyNames(thisObject, exec, propertyNames, mode);
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}

} // namespace JSC