Coverage for cuda/bindings/_internal/_fast_enum.py: 100.00%

44 statements  

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1# SPDX-FileCopyrightText: Copyright (c) 2026 NVIDIA CORPORATION & AFFILIATES. All rights reserved. 

2# SPDX-License-Identifier: Apache-2.0 

3 

4 

5# CYTHON-BINDINGS-GENERATED-DO-NOT-MODIFY-THIS-FILE: format=1; content-sha256=35d522fae601127f3ffc9d0de45d9adf2572934ee3308f5d99567aa8efd5ae77 

6""" 

7This is a replacement for the stdlib enum.IntEnum. 

8 

9Notably, it has much better import time performance, since it doesn't generate 

10and evaluate Python code at startup time. 

11 

12It supports the most important subset of the IntEnum API. See `test_enum` in 

13`cuda_bindings/tests/test_basics.py` for details. 

14""" 

15 

16from typing import Any, Iterator 

17 

18 

19class FastEnumMetaclass(type): 

20 def __init__(cls, name, bases, namespace): 

21 super().__init__(name, bases, namespace) 1ab

22 

23 cls.__singletons__ = {} 1ab

24 cls.__members__ = {} 1ab

25 for name, value in cls.__dict__.items(): 1ab

26 if name.startswith("__") and name.endswith("__"): 1ab

27 continue 1ab

28 

29 if isinstance(value, tuple): 1ab

30 value, doc = value 1ab

31 elif isinstance(value, int): 

32 doc = None 

33 else: 

34 continue 

35 

36 # A name sharing a value with an already-processed member is an 

37 # alias (e.g. a deprecated name kept for backward compatibility): 

38 # it resolves to the same singleton, but isn't a distinct member. 

39 if (singleton := cls.__singletons__.get(value)) is None: 1ab

40 singleton = int.__new__(cls, value) 1ab

41 singleton.__doc__ = doc 1ab

42 singleton._name = name 1ab

43 cls.__singletons__[value] = singleton 1ab

44 cls.__members__[name] = singleton 1ab

45 

46 for name, member in cls.__members__.items(): 1ab

47 setattr(cls, name, member) 1ab

48 

49 def __repr__(cls) -> str: 

50 return f"<enum '{cls.__name__}'>" 1c

51 

52 def __len__(cls) -> int: 

53 return len(cls.__singletons__) 1ce

54 

55 def __iter__(cls) -> Iterator["FastEnum"]: 

56 return iter(cls.__singletons__.values()) 2a f c d e g h NI

57 

58 def __contains__(cls, item: Any) -> bool: 

59 return item in cls.__singletons__ 1c

60 

61 

62class FastEnum(int, metaclass=FastEnumMetaclass): 

63 def __new__(cls, value: int) -> "FastEnum": 

64 singleton: FastEnum = cls.__singletons__.get(value) 2a 5c6c7c8c9c!c#c$c%c'c(c)c*c+c,c-c.c/c:c;c=c?c@c[c]c^c_c`c{c|c}c~cadbdcdddedfdgdhdidjdkdldmdndodpdqdrdsdtdudvdwdxdydzdAdBdCdDdEdFdGdHdIdJdKdLdMdNdOdPdQdRdSdTdUdVdWdXdYdZd0d1d2d3d4d5d6d7d8d9d!d#d$d%d'd(d)d*d+d,d-d.d/d:d;d=d?d@d[d]d^d_d`d{d|d}d~daebecedeeefegeheiejekelemeneoepeqereseteuevewexeyezeAeBeCeDeEeFeGeHeIeJeKeLeMeNeOePeQeReSeTeUeVeWeXeYeZe0e1e2e3e4e5e6e7e8e9e!e#e$e%e'e(e)e*e+e,e-e.e/e:e;e=e?e@e[e]e^e_e`e{e|e}e~eafbfcfdfefffgfhfifjfkflfmfnfofpfqfrfsftfufvfwfxfyfzfAfBfCfDfEfFfGfHfIfJfKfLfMfNfOfPfQfRfSfTfUfVfWfXfYfZf0f1f2f3f4f5f6f7f8f9f!f#f$f%f'f(f)f*f+f,f-f.f/f:f;f=f?f@f[f]f^f_f`f{f|f}f~fagbgcgdgegfggghgZ ig0 jg1 kg2 lg3 mg4 ng5 og6 pg7 qg8 rg9 sg! tg# ug$ vg% wg' xg( yg) zg* AgBgCgDgEgFgGgHgIgJgKgLgMgNgOgPgQgRgSgTgUgVgWgXgYgZg0g1g2g3g4g5g6g7g8g9g!g#g$g%g'g(g)g*g+g,g-g.g/g:g;g=g?g@g[g]g^g_g`g{g|g}g~gahbhchdhehfhghhhihjhkhlhmhnhohphqhrhshthuhvhwhxhyhzhAhBhChDhEhFhGhHhIhJhKhLhMhNhOhPhQhRhShThUhVhWhXhYhZh0h1h2h3h4h5h6h7h8h9h!h#h$h%h'h(h)h*h+h,h-h.h/h:h;h=h?h@h[h]h^h_h`h{h|h}h~haibicidieifigihiiijikiliminioipiqirisitiuiviwixiyiziAiBiCiDiEiFiGiHiIiJiKi+ Li, Mi- Ni. 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66 raise ValueError(f"{value} is not a valid {cls.__name__}") 2f i #pc d

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Oi/ Pi: Qi; Ri= Si? 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68 

69 def __repr__(self) -> str: 

70 return f"<{self.__class__.__name__}.{self._name}: {int(self)}>" 2a i c e icOIlcPIQI

71 

72 @property 

73 def name(self) -> str: 

74 return self._name 2Z 0 1 2 3 4 5 6 7 8 9 ! # $ % ' ( ) * ] ^ _ ` { j k l m n o p q MIRISITIUI;b=b?b@b[b]b^b_b`b{b|b}b~bacbcccdcecfcgchcc d r s t u v w x y z A jckcg h B C D E F G H I J K L M N O P Q R S T U V W X Y

75 

76 @property 

77 def value(self) -> int: 

78 return int(self) 2+ , - . / : ; = ? @ [ VI| } ~ abbbWIXIYIZI0I1I2I3I4I5Ij k l m n o p q cbdbebfbgbhbibjbkblbmbnbobpbqbrbsbtbubvbwbxbybzbAbBbCbDbEbFbGb6I7I8I9I!I#IMI$I%I'I(IHb)I*I+I,I-IIb.I/I:IJbKbLbMbNbObPbQbRbSbTbUbVbWbXbYbZb0b1b2b3b4b5b6b7b8b9b!b#b$b%b'b(b)b*b+b,b-b.b/b:bc d r s t u v w ;I=I?Ix y z A @ImcB C D ncocpcE F G qcrcsctcucvcwcxcyczcAcBcCcDcEcFcGcHcIcJcKcLcMcNcOcPcQcRcScTcUcVcWcXcYcZc0c1c2c3c4cH I J K L M N O P Q R S T U V W [I]I^IX Y _I`I