anchor.diff:          return 'SimpleType.double';
         case float:
           return 'SimpleType.float';
  -      case inT8:
  -        return 'SimpleType.inT8';
  -      case inT16:
  -        return 'SimpleType.inT16';
  -      case inT32:
  -        return 'SimpleType.inT32';
  -      case inT64:
  -        return 'SimpleType.inT64';
  -      case uinT8:
  -        return 'SimpleType.uinT8';
  -      case uinT16:
  -        return 'SimpleType.uinT16';
  -      case uinT32:
  -        return 'SimpleType.uinT32';
  -      case uinT64:
  -        return 'SimpleType.uinT64';
  +      case int8:
  +        return 'SimpleType.int8';
  +      case int16:
  +        return 'SimpleType.int16';
  +      case int32:
  +        return 'SimpleType.int32';
  +      case int64:
  +        return 'SimpleType.int64';
  +      case uint8:
  +        return 'SimpleType.uint8';
  +      case uint16:
  +        return 'SimpleType.uint16';
  +      case uint32:
  +        return 'SimpleType.uint32';
  +      case uint64:
  +        return 'SimpleType.uint64';
       }
     }
   
  
positive.code:   static const SimpleType bool = const SimpleType._(0);
    static const SimpleType double = const SimpleType._(1);
    static const SimpleType float = const SimpleType._(2);
    static const SimpleType inT8 = const SimpleType._(3);
    static const SimpleType inT16 = const SimpleType._(4);
    static const SimpleType inT32 = const SimpleType._(5);
    static const SimpleType inT64 = const SimpleType._(6);
    static const SimpleType uinT8 = const SimpleType._(7);
    static const SimpleType uinT16 = const SimpleType._(8);
    static const SimpleType uinT32 = const SimpleType._(9);
    static const SimpleType uinT64 = const SimpleType._(10);
  
    const SimpleType._(int v) : super(v);
  
  
negative.code:       case 2:
          return float;
        case 3:
          return int8;
        case 4:
          return int16;
        case 5:
          return int32;
        case 6:
          return int64;
        case 7:
          return uint8;
        case 8:
          return uint16;
        case 9:
          return uint32;
        case 10:
          return uint64;
        default:
          return null;
      }
  