Coverage for /pythoncovmergedfiles/medio/medio/usr/local/lib/python3.8/site-packages/setuptools/py33compat.py: 43%

1import dis 

2import array 

3import collections 

4 

5try: 

6 import html 

7except ImportError: 

8 html = None 

9 

10from setuptools.extern import six 

11from setuptools.extern.six.moves import html_parser 

12 

13__metaclass__ = type 

14 

15OpArg = collections.namedtuple('OpArg', 'opcode arg') 

16 

17 

18class Bytecode_compat: 

19 def __init__(self, code): 

20 self.code = code 

21 

22 def __iter__(self): 

23 """Yield '(op,arg)' pair for each operation in code object 'code'""" 

24 

25 bytes = array.array('b', self.code.co_code) 

26 eof = len(self.code.co_code) 

27 

28 ptr = 0 

29 extended_arg = 0 

30 

31 while ptr < eof: 

32 

33 op = bytes[ptr] 

34 

35 if op >= dis.HAVE_ARGUMENT: 

36 

37 arg = bytes[ptr + 1] + bytes[ptr + 2] * 256 + extended_arg 

38 ptr += 3 

39 

40 if op == dis.EXTENDED_ARG: 

41 long_type = six.integer_types[-1] 

42 extended_arg = arg * long_type(65536) 

43 continue 

44 

45 else: 

46 arg = None 

47 ptr += 1 

48 

49 yield OpArg(op, arg) 

50 

51 

52Bytecode = getattr(dis, 'Bytecode', Bytecode_compat) 

53 

54 

55unescape = getattr(html, 'unescape', None) 

56if unescape is None: 

57 # HTMLParser.unescape is deprecated since Python 3.4, and will be removed 

58 # from 3.9. 

59 unescape = html_parser.HTMLParser().unescape