Ejemplo n.º 1
0
bool _NPN_HasProperty(NPP, NPObject* o, NPIdentifier propertyName)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        PrivateIdentifier* i = static_cast<PrivateIdentifier*>(propertyName);
        JSLock lock(false);
        if (i->isString) {
            bool result = obj->imp->hasProperty(exec, identifierFromNPIdentifier(i->value.string));
            exec->clearException();
            return result;
        }

        bool result = obj->imp->hasProperty(exec, i->value.number);
        exec->clearException();
        return result;
    }

    if (o->_class->hasProperty)
        return o->_class->hasProperty(o, propertyName);

    return false;
}
Ejemplo n.º 2
0
bool _NPN_GetProperty(NPP, NPObject* o, NPIdentifier propertyName, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        PrivateIdentifier* i = static_cast<PrivateIdentifier*>(propertyName);
        
        JSLock lock(false);
        JSValue* result;
        if (i->isString)
            result = obj->imp->get(exec, identifierFromNPIdentifier(i->value.string));
        else
            result = obj->imp->get(exec, i->value.number);

        convertValueToNPVariant(exec, result, variant);
        exec->clearException();
        return true;
    }

    if (o->_class->hasProperty && o->_class->getProperty) {
        if (o->_class->hasProperty(o, propertyName))
            return o->_class->getProperty(o, propertyName, variant);
        return false;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 3
0
bool _NPN_SetProperty(NPP, NPObject* o, NPIdentifier propertyName, const NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(false);
        PrivateIdentifier* i = static_cast<PrivateIdentifier*>(propertyName);

        if (i->isString) {
            PutPropertySlot slot;
            obj->imp->put(exec, identifierFromNPIdentifier(i->value.string), convertNPVariantToValue(exec, variant, rootObject), slot);
        } else
            obj->imp->put(exec, i->value.number, convertNPVariantToValue(exec, variant, rootObject));
        exec->clearException();
        return true;
    }

    if (o->_class->setProperty)
        return o->_class->setProperty(o, propertyName, variant);

    return false;
}
Ejemplo n.º 4
0
bool _NPN_SetProperty(NPP, NPObject* o, NPIdentifier propertyName, const NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        JSLock lock;
        PrivateIdentifier* i = (PrivateIdentifier*)propertyName;
        if (i->isString)
            obj->imp->put(exec, identifierFromNPIdentifier(i->value.string), convertNPVariantToValue(exec, variant));
        else
            obj->imp->put(exec, i->value.number, convertNPVariantToValue(exec, variant));
        return true;
    }

    if (o->_class->setProperty)
        return o->_class->setProperty(o, propertyName, variant);

    return false;
}
Ejemplo n.º 5
0
bool _NPN_Enumerate(NPP, NPObject* o, NPIdentifier** identifier, uint32_t* count)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 
        
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;
        
        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(false);
        PropertyNameArray propertyNames(exec);

        obj->imp->getPropertyNames(exec, propertyNames);
        unsigned size = static_cast<unsigned>(propertyNames.size());
        // FIXME: This should really call NPN_MemAlloc but that's in WebKit
        NPIdentifier* identifiers = static_cast<NPIdentifier*>(malloc(sizeof(NPIdentifier) * size));
        
        for (unsigned i = 0; i < size; ++i)
            identifiers[i] = _NPN_GetStringIdentifier(propertyNames[i].ustring().UTF8String().c_str());

        *identifier = identifiers;
        *count = size;

        exec->clearException();
        return true;
    }
    
    if (NP_CLASS_STRUCT_VERSION_HAS_ENUM(o->_class) && o->_class->enumerate)
        return o->_class->enumerate(o, identifier, count);
    
    return false;
}
Ejemplo n.º 6
0
bool _NPN_RemoveProperty(NPP, NPObject* o, NPIdentifier propertyName)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        PrivateIdentifier* i = (PrivateIdentifier*)propertyName;
        if (i->isString) {
            if (!obj->imp->hasProperty(exec, identifierFromNPIdentifier(i->value.string)))
                return false;
        } else {
            if (!obj->imp->hasProperty(exec, i->value.number))
                return false;
        }

        JSLock lock;
        if (i->isString)
            obj->imp->deleteProperty(exec, identifierFromNPIdentifier(i->value.string));
        else
            obj->imp->deleteProperty(exec, i->value.number);
        
        return true;
    }
    return false;
}
Ejemplo n.º 7
0
bool _NPN_SetProperty(NPP, NPObject* o, NPIdentifier propertyName, const NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLockHolder lock(exec);
        IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);

        if (i->isString()) {
            PutPropertySlot slot(obj->imp);
            obj->imp->methodTable()->put(obj->imp, exec, identifierFromNPIdentifier(exec, i->string()), convertNPVariantToValue(exec, variant, rootObject), slot);
        } else
            obj->imp->methodTable()->putByIndex(obj->imp, exec, i->number(), convertNPVariantToValue(exec, variant, rootObject), false);
        exec->clearException();
        return true;
    }

    if (o->_class->setProperty)
        return o->_class->setProperty(o, propertyName, variant);

    return false;
}
Ejemplo n.º 8
0
bool _NPN_RemoveProperty(NPP, NPObject* o, NPIdentifier propertyName)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        IdentifierRep* i = static_cast<IdentifierRep*>(propertyName);
        if (i->isString()) {
            if (!obj->imp->hasProperty(exec, identifierFromNPIdentifier(exec, i->string()))) {
                exec->clearException();
                return false;
            }
        } else {
            if (!obj->imp->hasProperty(exec, i->number())) {
                exec->clearException();
                return false;
            }
        }

        JSLockHolder lock(exec);
        if (i->isString())
            obj->imp->methodTable()->deleteProperty(obj->imp, exec, identifierFromNPIdentifier(exec, i->string()));
        else
            obj->imp->methodTable()->deletePropertyByIndex(obj->imp, exec, i->number());

        exec->clearException();
        return true;
    }
    return false;
}
Ejemplo n.º 9
0
bool _NPN_Evaluate(NPP instance, NPObject* o, NPString* s, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        // There is a crash in Flash when evaluating a script that destroys the
        // PluginView, so we destroy it asynchronously.
        PluginView::keepAlive(instance);

        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLockHolder lock(exec);
        String scriptString = convertNPStringToUTF16(s);
        
        JSValue returnValue = JSC::evaluate(rootObject->globalObject()->globalExec(), makeSource(scriptString), JSC::JSValue());

        convertValueToNPVariant(exec, returnValue, variant);
        exec->clearException();
        return true;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 10
0
bool _NPN_HasMethod(NPP, NPObject* o, NPIdentifier methodName)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;

        PrivateIdentifier* i = (PrivateIdentifier*)methodName;
        if (!i->isString)
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        JSLock lock;
        JSValue* func = obj->imp->get(exec, identifierFromNPIdentifier(i->value.string));
        return !func->isUndefined();
    }
    
    if (o->_class->hasMethod)
        return o->_class->hasMethod(o, methodName);
    
    return false;
}
Ejemplo n.º 11
0
bool _NPN_Evaluate(NPP, NPObject* o, NPString* s, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(SilenceAssertionsOnly);
        String scriptString = convertNPStringToUTF16(s);
        ProtectedPtr<JSGlobalObject> globalObject = rootObject->globalObject();
        globalObject->globalData()->timeoutChecker.start();
        Completion completion = JSC::evaluate(globalObject->globalExec(), globalObject->globalScopeChain(), makeSource(scriptString), JSC::JSValue());
        globalObject->globalData()->timeoutChecker.stop();
        ComplType type = completion.complType();
        
        JSValue result;
        if (type == Normal) {
            result = completion.value();
            if (!result)
                result = jsUndefined();
        } else
            result = jsUndefined();

        convertValueToNPVariant(exec, result, variant);
        exec->clearException();
        return true;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 12
0
bool _NPN_HasMethod(NPP, NPObject* o, NPIdentifier methodName)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        PrivateIdentifier* i = static_cast<PrivateIdentifier*>(methodName);
        if (!i->isString)
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(false);
        JSValue* func = obj->imp->get(exec, identifierFromNPIdentifier(i->value.string));
        exec->clearException();
        return !func->isUndefined();
    }
    
    if (o->_class->hasMethod)
        return o->_class->hasMethod(o, methodName);
    
    return false;
}
Ejemplo n.º 13
0
bool _NPN_Evaluate(NPP, NPObject* o, NPString* s, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->globalObject()->globalExec();
        
        JSLock lock(false);
        String scriptString = convertNPStringToUTF16(s);
        rootObject->globalObject()->startTimeoutCheck();
        Completion completion = Interpreter::evaluate(rootObject->globalObject()->globalExec(), rootObject->globalObject()->globalScopeChain(), UString(), 1, scriptString);
        rootObject->globalObject()->stopTimeoutCheck();
        ComplType type = completion.complType();
        
        JSValue* result;
        if (type == Normal) {
            result = completion.value();
            if (!result)
                result = jsUndefined();
        } else
            result = jsUndefined();

        convertValueToNPVariant(exec, result, variant);
        exec->clearException();
        return true;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 14
0
bool _NPN_Invoke(NPP npp, NPObject* o, NPIdentifier methodName, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;

        PrivateIdentifier* i = (PrivateIdentifier*)methodName;
        if (!i->isString)
            return false;

        // Special case the "eval" method.
        if (methodName == _NPN_GetStringIdentifier("eval")) {
            if (argCount != 1)
                return false;
            if (args[0].type != NPVariantType_String)
                return false;
            return _NPN_Evaluate(npp, o, (NPString *)&args[0].value.stringValue, result);
        }

        // Lookup the function object.
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        JSLock lock;
        JSValue* func = obj->imp->get(exec, identifierFromNPIdentifier(i->value.string));
        if (func->isNull()) {
            NULL_TO_NPVARIANT(*result);
            return false;
        } 
        if (func->isUndefined()) {
            VOID_TO_NPVARIANT(*result);
            return false;
        }
        // Call the function object.
        JSObject *funcImp = static_cast<JSObject*>(func);
        JSObject *thisObj = const_cast<JSObject*>(obj->imp);
        List argList = listFromVariantArgs(exec, args, argCount, rootObject);
        rootObject->interpreter()->startTimeoutCheck();
        JSValue *resultV = funcImp->call (exec, thisObj, argList);
        rootObject->interpreter()->stopTimeoutCheck();

        // Convert and return the result of the function call.
        convertValueToNPVariant(exec, resultV, result);
        return true;
    }

    if (o->_class->invoke)
        return o->_class->invoke(o, methodName, args, argCount, result);
    
    VOID_TO_NPVARIANT(*result);
    return true;
}
Ejemplo n.º 15
0
void _NPN_SetException(NPObject* o, const NPUTF8* message)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return;

        ExecState* exec = rootObject->interpreter()->globalExec();
        JSLock lock;
        throwError(exec, GeneralError, message);
    }
}
Ejemplo n.º 16
0
bool _NPN_Invoke(NPP npp, NPObject* o, NPIdentifier methodName, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 

        IdentifierRep* i = static_cast<IdentifierRep*>(methodName);
        if (!i->isString())
            return false;

        // Special case the "eval" method.
        if (methodName == _NPN_GetStringIdentifier("eval")) {
            if (argCount != 1)
                return false;
            if (args[0].type != NPVariantType_String)
                return false;
            return _NPN_Evaluate(npp, o, const_cast<NPString*>(&args[0].value.stringValue), result);
        }

        // Look up the function object.
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;
        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(SilenceAssertionsOnly);
        JSValue function = obj->imp->get(exec, identifierFromNPIdentifier(i->string()));
        CallData callData;
        CallType callType = function.getCallData(callData);
        if (callType == CallTypeNone)
            return false;

        // Call the function object.
        MarkedArgumentBuffer argList;
        getListFromVariantArgs(exec, args, argCount, rootObject, argList);
        ProtectedPtr<JSGlobalObject> globalObject = rootObject->globalObject();
        globalObject->globalData()->timeoutChecker.start();
        JSValue resultV = JSC::call(exec, function, callType, callData, obj->imp, argList);
        globalObject->globalData()->timeoutChecker.stop();

        // Convert and return the result of the function call.
        convertValueToNPVariant(exec, resultV, result);
        exec->clearException();
        return true;
    }

    if (o->_class->invoke)
        return o->_class->invoke(o, methodName, args, argCount, result);
    
    VOID_TO_NPVARIANT(*result);
    return true;
}
Ejemplo n.º 17
0
bool _NPN_GetProperty(NPP, NPObject* o, NPIdentifier propertyName, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        PrivateIdentifier* i = (PrivateIdentifier*)propertyName;
        
        JSLock lock;
        JSValue *result;
        if (i->isString)
            result = obj->imp->get(exec, identifierFromNPIdentifier(i->value.string));
        else
            result = obj->imp->get(exec, i->value.number);

        if (result->isNull()) {
            NULL_TO_NPVARIANT(*variant);
            return false;
        }
        if (result->isUndefined()) {
            VOID_TO_NPVARIANT(*variant);
            return false;
        }
        convertValueToNPVariant(exec, result, variant);
        return true;
    }

    if (o->_class->hasProperty && o->_class->getProperty) {
        if (o->_class->hasProperty(o, propertyName))
            return o->_class->getProperty(o, propertyName, variant);
        return false;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 18
0
bool _NPN_Evaluate(NPP, NPObject* o, NPString* s, NPVariant* variant)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 

        if (!_isSafeScript(obj))
            return false;

        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;

        ExecState* exec = rootObject->interpreter()->globalExec();
        
        JSLock lock;
        NPUTF16* scriptString;
        unsigned int UTF16Length;
        convertNPStringToUTF16(s, &scriptString, &UTF16Length); // requires free() of returned memory
        rootObject->interpreter()->startTimeoutCheck();
        Completion completion = rootObject->interpreter()->evaluate(UString(), 0, UString((const UChar*)scriptString,UTF16Length));
        rootObject->interpreter()->stopTimeoutCheck();
        ComplType type = completion.complType();
        
        JSValue* result;
        if (type == Normal) {
            result = completion.value();
            if (!result)
                result = jsUndefined();
        } else
            result = jsUndefined();

        free(scriptString);

        convertValueToNPVariant(exec, result, variant);
    
        return true;
    }

    VOID_TO_NPVARIANT(*variant);
    return false;
}
Ejemplo n.º 19
0
bool _NPN_InvokeDefault(NPP, NPObject* o, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o); 
        
        VOID_TO_NPVARIANT(*result);
        
        // Lookup the function object.
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;
        
        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(SilenceAssertionsOnly);
        
        // Call the function object.
        JSValue function = obj->imp;
        CallData callData;
        CallType callType = function.getCallData(callData);
        if (callType == CallTypeNone)
            return false;
        
        MarkedArgumentBuffer argList;
        getListFromVariantArgs(exec, args, argCount, rootObject, argList);
        ProtectedPtr<JSGlobalObject> globalObject = rootObject->globalObject();
        globalObject->globalData()->timeoutChecker.start();
        JSValue resultV = JSC::call(exec, function, callType, callData, function, argList);
        globalObject->globalData()->timeoutChecker.stop();

        // Convert and return the result of the function call.
        convertValueToNPVariant(exec, resultV, result);
        exec->clearException();
        return true;        
    }

    if (o->_class->invokeDefault)
        return o->_class->invokeDefault(o, args, argCount, result);    
    VOID_TO_NPVARIANT(*result);
    return true;
}
Ejemplo n.º 20
0
bool _NPN_Construct(NPP, NPObject* o, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = reinterpret_cast<JavaScriptObject*>(o);
        
        VOID_TO_NPVARIANT(*result);
        
        // Lookup the constructor object.
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;
        
        ExecState* exec = rootObject->globalObject()->globalExec();
        JSLock lock(SilenceAssertionsOnly);
        
        // Call the constructor object.
        JSValue constructor = obj->imp;
        ConstructData constructData;
        ConstructType constructType = constructor.getConstructData(constructData);
        if (constructType == ConstructTypeNone)
            return false;
        
        MarkedArgumentBuffer argList;
        getListFromVariantArgs(exec, args, argCount, rootObject, argList);
        ProtectedPtr<JSGlobalObject> globalObject = rootObject->globalObject();
        globalObject->globalData()->timeoutChecker.start();
        JSValue resultV = JSC::construct(exec, constructor, constructType, constructData, argList);
        globalObject->globalData()->timeoutChecker.stop();
        
        // Convert and return the result.
        convertValueToNPVariant(exec, resultV, result);
        exec->clearException();
        return true;
    }
    
    if (NP_CLASS_STRUCT_VERSION_HAS_CTOR(o->_class) && o->_class->construct)
        return o->_class->construct(o, args, argCount, result);
    
    return false;
}
Ejemplo n.º 21
0
bool _NPN_InvokeDefault(NPP, NPObject* o, const NPVariant* args, uint32_t argCount, NPVariant* result)
{
    if (o->_class == NPScriptObjectClass) {
        JavaScriptObject* obj = (JavaScriptObject*)o; 
        if (!_isSafeScript(obj))
            return false;        
        
        VOID_TO_NPVARIANT(*result);
        
        // Lookup the function object.
        RootObject* rootObject = obj->rootObject;
        if (!rootObject || !rootObject->isValid())
            return false;
        
        ExecState* exec = rootObject->interpreter()->globalExec();
        JSLock lock;
        
        // Call the function object.
        JSObject *funcImp = static_cast<JSObject*>(obj->imp);
        if (!funcImp->implementsCall())
            return false;
        
        List argList = listFromVariantArgs(exec, args, argCount, rootObject);
        rootObject->interpreter()->startTimeoutCheck();
        JSValue *resultV = funcImp->call (exec, funcImp, argList);
        rootObject->interpreter()->stopTimeoutCheck();

        // Convert and return the result of the function call.
        convertValueToNPVariant(exec, resultV, result);
        return true;        
    }

    if (o->_class->invokeDefault)
        return o->_class->invokeDefault(o, args, argCount, result);    
    VOID_TO_NPVARIANT(*result);
    return true;
}