jscallbackobjectfunctions.h

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            constructData.native.function = construct;
            return ConstructTypeHost;
        }
    }
    return ConstructTypeNone;
}

template <class Base>
JSObject* JSCallbackObject<Base>::construct(ExecState* exec, JSObject* constructor, const ArgList& args)
{
    JSContextRef execRef = toRef(exec);
    JSObjectRef constructorRef = toRef(constructor);
    
    for (JSClassRef jsClass = static_cast<JSCallbackObject<Base>*>(constructor)->classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (JSObjectCallAsConstructorCallback callAsConstructor = jsClass->callAsConstructor) {
            int argumentCount = static_cast<int>(args.size());
            Vector<JSValueRef, 16> arguments(argumentCount);
            for (int i = 0; i < argumentCount; i++)
                arguments[i] = toRef(args.at(exec, i));
            JSLock::DropAllLocks dropAllLocks(exec);
            return toJS(callAsConstructor(execRef, constructorRef, argumentCount, arguments.data(), toRef(exec->exceptionSlot())));
        }
    }
    
    ASSERT_NOT_REACHED(); // getConstructData should prevent us from reaching here
    return 0;
}

template <class Base>
bool JSCallbackObject<Base>::hasInstance(ExecState* exec, JSValuePtr value, JSValuePtr)
{
    JSContextRef execRef = toRef(exec);
    JSObjectRef thisRef = toRef(this);
    
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (JSObjectHasInstanceCallback hasInstance = jsClass->hasInstance) {
            JSLock::DropAllLocks dropAllLocks(exec);
            return hasInstance(execRef, thisRef, toRef(value), toRef(exec->exceptionSlot()));
        }
    }
    return false;
}

template <class Base>
CallType JSCallbackObject<Base>::getCallData(CallData& callData)
{
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (jsClass->callAsFunction) {
            callData.native.function = call;
            return CallTypeHost;
        }
    }
    return CallTypeNone;
}

template <class Base>
JSValuePtr JSCallbackObject<Base>::call(ExecState* exec, JSObject* functionObject, JSValuePtr thisValue, const ArgList& args)
{
    JSContextRef execRef = toRef(exec);
    JSObjectRef functionRef = toRef(functionObject);
    JSObjectRef thisObjRef = toRef(thisValue.toThisObject(exec));
    
    for (JSClassRef jsClass = static_cast<JSCallbackObject<Base>*>(functionObject)->classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (JSObjectCallAsFunctionCallback callAsFunction = jsClass->callAsFunction) {
            int argumentCount = static_cast<int>(args.size());
            Vector<JSValueRef, 16> arguments(argumentCount);
            for (int i = 0; i < argumentCount; i++)
                arguments[i] = toRef(args.at(exec, i));
            JSLock::DropAllLocks dropAllLocks(exec);
            return toJS(callAsFunction(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), toRef(exec->exceptionSlot())));
        }
    }
    
    ASSERT_NOT_REACHED(); // getCallData should prevent us from reaching here
    return noValue();
}

template <class Base>
void JSCallbackObject<Base>::getPropertyNames(ExecState* exec, PropertyNameArray& propertyNames)
{
    JSContextRef execRef = toRef(exec);
    JSObjectRef thisRef = toRef(this);
    
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (JSObjectGetPropertyNamesCallback getPropertyNames = jsClass->getPropertyNames) {
            JSLock::DropAllLocks dropAllLocks(exec);
            getPropertyNames(execRef, thisRef, toRef(&propertyNames));
        }
        
        if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) {
            typedef OpaqueJSClassStaticValuesTable::const_iterator iterator;
            iterator end = staticValues->end();
            for (iterator it = staticValues->begin(); it != end; ++it) {
                UString::Rep* name = it->first.get();
                StaticValueEntry* entry = it->second;
                if (entry->getProperty && !(entry->attributes & kJSPropertyAttributeDontEnum))
                    propertyNames.add(Identifier(exec, name));
            }
        }
        
        if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
            typedef OpaqueJSClassStaticFunctionsTable::const_iterator iterator;
            iterator end = staticFunctions->end();
            for (iterator it = staticFunctions->begin(); it != end; ++it) {
                UString::Rep* name = it->first.get();
                StaticFunctionEntry* entry = it->second;
                if (!(entry->attributes & kJSPropertyAttributeDontEnum))
                    propertyNames.add(Identifier(exec, name));
            }
        }
    }
    
    Base::getPropertyNames(exec, propertyNames);
}

template <class Base>
double JSCallbackObject<Base>::toNumber(ExecState* exec) const
{
    // We need this check to guard against the case where this object is rhs of
    // a binary expression where lhs threw an exception in its conversion to
    // primitive
    if (exec->hadException())
        return NaN;
    JSContextRef ctx = toRef(exec);
    JSObjectRef thisRef = toRef(this);
    
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass)
        if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) {
            JSLock::DropAllLocks dropAllLocks(exec);
            if (JSValueRef value = convertToType(ctx, thisRef, kJSTypeNumber, toRef(exec->exceptionSlot()))) {
                double dValue;
                return toJS(value).getNumber(dValue) ? dValue : NaN;
            }
        }
            
    return Base::toNumber(exec);
}

template <class Base>
UString JSCallbackObject<Base>::toString(ExecState* exec) const
{
    JSContextRef ctx = toRef(exec);
    JSObjectRef thisRef = toRef(this);
    
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass)
        if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) {
            JSValueRef value;
            {
                JSLock::DropAllLocks dropAllLocks(exec);
                value = convertToType(ctx, thisRef, kJSTypeString, toRef(exec->exceptionSlot()));
            }
            if (value)
                return toJS(value).getString();
        }
            
    return Base::toString(exec);
}

template <class Base>
void JSCallbackObject<Base>::setPrivate(void* data)
{
    m_callbackObjectData->privateData = data;
}

template <class Base>
void* JSCallbackObject<Base>::getPrivate()
{
    return m_callbackObjectData->privateData;
}

template <class Base>
bool JSCallbackObject<Base>::inherits(JSClassRef c) const
{
    for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass)
        if (jsClass == c)
            return true;
    
    return false;
}

template <class Base>
JSValuePtr JSCallbackObject<Base>::staticValueGetter(ExecState* exec, const Identifier& propertyName, const PropertySlot& slot)
{
    JSCallbackObject* thisObj = asCallbackObject(slot.slotBase());
    
    JSObjectRef thisRef = toRef(thisObj);
    RefPtr<OpaqueJSString> propertyNameRef;
    
    for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass)
        if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec))
            if (StaticValueEntry* entry = staticValues->get(propertyName.ustring().rep()))
                if (JSObjectGetPropertyCallback getProperty = entry->getProperty) {
                    if (!propertyNameRef)
                        propertyNameRef = OpaqueJSString::create(propertyName.ustring());
                    JSLock::DropAllLocks dropAllLocks(exec);
                    if (JSValueRef value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), toRef(exec->exceptionSlot())))
                        return toJS(value);
                }
                    
    return throwError(exec, ReferenceError, "Static value property defined with NULL getProperty callback.");
}

template <class Base>
JSValuePtr JSCallbackObject<Base>::staticFunctionGetter(ExecState* exec, const Identifier& propertyName, const PropertySlot& slot)
{
    JSCallbackObject* thisObj = asCallbackObject(slot.slotBase());
    
    // Check for cached or override property.
    PropertySlot slot2(thisObj);
    if (thisObj->Base::getOwnPropertySlot(exec, propertyName, slot2))
        return slot2.getValue(exec, propertyName);
    
    for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) {
        if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) {
            if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.ustring().rep())) {
                if (JSObjectCallAsFunctionCallback callAsFunction = entry->callAsFunction) {
                    JSObject* o = new (exec) JSCallbackFunction(exec, callAsFunction, propertyName);
                    thisObj->putDirect(propertyName, o, entry->attributes);
                    return o;
                }
            }
        }
    }
    
    return throwError(exec, ReferenceError, "Static function property defined with NULL callAsFunction callback.");
}

template <class Base>
JSValuePtr JSCallbackObject<Base>::callbackGetter(ExecState* exec, const Identifier& propertyName, const PropertySlot& slot)
{
    JSCallbackObject* thisObj = asCallbackObject(slot.slotBase());
    
    JSObjectRef thisRef = toRef(thisObj);
    RefPtr<OpaqueJSString> propertyNameRef;
    
    for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass)
        if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) {
            if (!propertyNameRef)
                propertyNameRef = OpaqueJSString::create(propertyName.ustring());
            JSLock::DropAllLocks dropAllLocks(exec);
            if (JSValueRef value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), toRef(exec->exceptionSlot())))
                return toJS(value);
        }
            
    return throwError(exec, ReferenceError, "hasProperty callback returned true for a property that doesn't exist.");
}

} // namespace JSC