public static CodegenExpression CodegenGetterEventDistinct(
bool isDistinct,
EventType eventType,
MultiKeyClassRef optionalDistinctMultiKey,
CodegenMethod method,
CodegenClassScope classScope)
{
if (!isDistinct)
{
return(ConstantNull());
}
var propertyNames = eventType.PropertyNames;
var spi = (EventTypeSPI)eventType;
if (propertyNames.Length == 1)
{
var propertyName = propertyNames[0];
var result = eventType.GetPropertyType(propertyName);
var getter = spi.GetGetterSPI(propertyName);
return(EventTypeUtility.CodegenGetterWCoerceWArray(
typeof(EventPropertyValueGetter),
getter,
result,
null,
method,
typeof(MultiKeyCodegen),
classScope));
}
var getters = new EventPropertyGetterSPI[propertyNames.Length];
var getterResultTypes = new Type[propertyNames.Length];
for (var i = 0; i < propertyNames.Length; i++)
{
getterResultTypes[i] = eventType.GetPropertyType(propertyNames[i]);
getters[i] = spi.GetGetterSPI(propertyNames[i]);
}
if (eventType is VariantEventType)
{
return(CodegenMultikeyGetterBeanGet(getters, getterResultTypes, optionalDistinctMultiKey, method, classScope));
}
return(CodegenGetterMayMultiKey(eventType, getters, getterResultTypes, null, optionalDistinctMultiKey, method, classScope));
}