Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/astroid/brain/brain_signal.py: 48%

1# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html 

2# For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE 

3# Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt 

4 

5"""Astroid hooks for the signal library. 

6 

7The signal module generates the 'Signals', 'Handlers' and 'Sigmasks' IntEnums 

8dynamically using the IntEnum._convert() classmethod, which modifies the module 

9globals. Astroid is unable to handle this type of code. 

10 

11Without these hooks, the following are erroneously triggered by Pylint: 

12 * E1101: Module 'signal' has no 'Signals' member (no-member) 

13 * E1101: Module 'signal' has no 'Handlers' member (no-member) 

14 * E1101: Module 'signal' has no 'Sigmasks' member (no-member) 

15 

16These enums are defined slightly differently depending on the user's operating 

17system and platform. These platform differences should follow the current 

18Python typeshed stdlib `signal.pyi` stub file, available at: 

19 

20* https://github.com/python/typeshed/blob/master/stdlib/signal.pyi 

21 

22Note that the enum.auto() values defined here for the Signals, Handlers and 

23Sigmasks IntEnums are just dummy integer values, and do not correspond to the 

24actual standard signal numbers - which may vary depending on the system. 

25""" 

26 

27 

28import sys 

29 

30from astroid.brain.helpers import register_module_extender 

31from astroid.builder import parse 

32from astroid.manager import AstroidManager 

33 

34 

35def _signals_enums_transform(): 

36 """Generates the AST for 'Signals', 'Handlers' and 'Sigmasks' IntEnums.""" 

37 return parse(_signals_enum() + _handlers_enum() + _sigmasks_enum()) 

38 

39 

40def _signals_enum() -> str: 

41 """Generates the source code for the Signals int enum.""" 

42 signals_enum = """ 

43 import enum 

44 class Signals(enum.IntEnum): 

45 SIGABRT = enum.auto() 

46 SIGEMT = enum.auto() 

47 SIGFPE = enum.auto() 

48 SIGILL = enum.auto() 

49 SIGINFO = enum.auto() 

50 SIGINT = enum.auto() 

51 SIGSEGV = enum.auto() 

52 SIGTERM = enum.auto() 

53 """ 

54 if sys.platform != "win32": 

55 signals_enum += """ 

56 SIGALRM = enum.auto() 

57 SIGBUS = enum.auto() 

58 SIGCHLD = enum.auto() 

59 SIGCONT = enum.auto() 

60 SIGHUP = enum.auto() 

61 SIGIO = enum.auto() 

62 SIGIOT = enum.auto() 

63 SIGKILL = enum.auto() 

64 SIGPIPE = enum.auto() 

65 SIGPROF = enum.auto() 

66 SIGQUIT = enum.auto() 

67 SIGSTOP = enum.auto() 

68 SIGSYS = enum.auto() 

69 SIGTRAP = enum.auto() 

70 SIGTSTP = enum.auto() 

71 SIGTTIN = enum.auto() 

72 SIGTTOU = enum.auto() 

73 SIGURG = enum.auto() 

74 SIGUSR1 = enum.auto() 

75 SIGUSR2 = enum.auto() 

76 SIGVTALRM = enum.auto() 

77 SIGWINCH = enum.auto() 

78 SIGXCPU = enum.auto() 

79 SIGXFSZ = enum.auto() 

80 """ 

81 if sys.platform == "win32": 

82 signals_enum += """ 

83 SIGBREAK = enum.auto() 

84 """ 

85 if sys.platform not in ("darwin", "win32"): 

86 signals_enum += """ 

87 SIGCLD = enum.auto() 

88 SIGPOLL = enum.auto() 

89 SIGPWR = enum.auto() 

90 SIGRTMAX = enum.auto() 

91 SIGRTMIN = enum.auto() 

92 """ 

93 return signals_enum 

94 

95 

96def _handlers_enum() -> str: 

97 """Generates the source code for the Handlers int enum.""" 

98 return """ 

99 import enum 

100 class Handlers(enum.IntEnum): 

101 SIG_DFL = enum.auto() 

102 SIG_IGN = eunm.auto() 

103 """ 

104 

105 

106def _sigmasks_enum() -> str: 

107 """Generates the source code for the Sigmasks int enum.""" 

108 if sys.platform != "win32": 

109 return """ 

110 import enum 

111 class Sigmasks(enum.IntEnum): 

112 SIG_BLOCK = enum.auto() 

113 SIG_UNBLOCK = enum.auto() 

114 SIG_SETMASK = enum.auto() 

115 """ 

116 return "" 

117 

118 

119register_module_extender(AstroidManager(), "signal", _signals_enums_transform)