JSSymbolTableObject.cpp   [plain text]

/*
 * 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:
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 *     notice, this list of conditions and the following disclaimer. 
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 *     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
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#include "config.h"
#include "JSSymbolTableObject.h"

#include "JSGlobalObject.h"
#include "JSLexicalEnvironment.h"
#include "JSNameScope.h"
#include "JSCInlines.h"
#include "PropertyNameArray.h"

namespace JSC {

void JSSymbolTableObject::visitChildren(JSCell* cell, SlotVisitor& visitor)
{
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(cell);
    ASSERT_GC_OBJECT_INHERITS(thisObject, info());
    Base::visitChildren(thisObject, visitor);
    visitor.append(&thisObject->m_symbolTable);
}

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

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

void JSSymbolTableObject::getOwnNonIndexPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode)
{
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(object);
    {
        ConcurrentJITLocker locker(thisObject->symbolTable()->m_lock);
        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()) {
                if (it->key->isSymbol() && !mode.includeSymbolProperties())
                    continue;
                propertyNames.add(Identifier::fromUid(exec, it->key.get()));
            }
        }
    }
    
    JSObject::getOwnNonIndexPropertyNames(thisObject, exec, propertyNames, mode);
}

} // namespace JSC