static void AddUniqueAccessor(INameScope scope, Accessor accessor) {
Accessor existing = (Accessor)scope[accessor.Name, accessor.Namespace];
if (existing != null) {
if (accessor is ElementAccessor) {
throw new InvalidOperationException(Res.GetString(Res.XmlDuplicateElementName, existing.Name, existing.Namespace));
}
else {
#if DEBUG
if (!(accessor is AttributeAccessor))
throw new InvalidOperationException(Res.GetString(Res.XmlInternalErrorDetails, "Bad accessor type " + accessor.GetType().FullName));
#endif
throw new InvalidOperationException(Res.GetString(Res.XmlDuplicateAttributeName, existing.Name, existing.Namespace));
}
}
else {
scope[accessor.Name, accessor.Namespace] = accessor;
}
}