Source/JavaScriptCore/runtime/JSSymbolTableObject.cpp

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

#include "JSCInlines.h"
#include "PropertyNameArray.h"

namespace JSC {

const ClassInfo JSSymbolTableObject::s_info = { "SymbolTableObject", &Base::s_info, nullptr, nullptr, CREATE_METHOD_TABLE(JSSymbolTableObject) };

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

DEFINE_VISIT_CHILDREN(JSSymbolTableObject);

bool JSSymbolTableObject::deleteProperty(JSCell* cell, JSGlobalObject* globalObject, PropertyName propertyName, DeletePropertySlot& slot)
{
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(cell);
    if (thisObject->symbolTable()->contains(propertyName.uid()))
        return false;

    return Base::deleteProperty(thisObject, globalObject, propertyName, slot);
}

void JSSymbolTableObject::getOwnSpecialPropertyNames(JSObject* object, JSGlobalObject* globalObject, PropertyNameArray& propertyNames, DontEnumPropertiesMode mode)
{
    VM& vm = globalObject->vm();
    JSSymbolTableObject* thisObject = jsCast<JSSymbolTableObject*>(object);
    {
        ConcurrentJSLocker 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 (mode == DontEnumPropertiesMode::Include || !it->value.isDontEnum()) {
                if (it->key->isSymbol() && !propertyNames.includeSymbolProperties())
                    continue;
                propertyNames.add(Identifier::fromUid(vm, it->key.get()));
            }
        }
    }
}

} // namespace JSC