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annotate lib/python3.8/site-packages/setuptools/py33compat.py @ 0:9e54283cc701 draft

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"planemo upload commit d12c32a45bcd441307e632fca6d9af7d60289d44"
author guerler
date Mon, 27 Jul 2020 03:47:31 -0400
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1 import dis
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2 import array
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3 import collections
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4
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5 try:
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6 import html
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7 except ImportError:
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8 html = None
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9
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10 from setuptools.extern import six
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11 from setuptools.extern.six.moves import html_parser
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12
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13 __metaclass__ = type
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14
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15 OpArg = collections.namedtuple('OpArg', 'opcode arg')
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16
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17
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18 class Bytecode_compat:
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19 def __init__(self, code):
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20 self.code = code
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21
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22 def __iter__(self):
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23 """Yield '(op,arg)' pair for each operation in code object 'code'"""
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24
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25 bytes = array.array('b', self.code.co_code)
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26 eof = len(self.code.co_code)
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27
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28 ptr = 0
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29 extended_arg = 0
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30
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31 while ptr < eof:
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32
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33 op = bytes[ptr]
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34
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35 if op >= dis.HAVE_ARGUMENT:
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36
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37 arg = bytes[ptr + 1] + bytes[ptr + 2] * 256 + extended_arg
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38 ptr += 3
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39
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40 if op == dis.EXTENDED_ARG:
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41 long_type = six.integer_types[-1]
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42 extended_arg = arg * long_type(65536)
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43 continue
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44
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45 else:
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46 arg = None
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47 ptr += 1
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48
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49 yield OpArg(op, arg)
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51
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52 Bytecode = getattr(dis, 'Bytecode', Bytecode_compat)
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54
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55 unescape = getattr(html, 'unescape', None)
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56 if unescape is None:
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57 # HTMLParser.unescape is deprecated since Python 3.4, and will be removed
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58 # from 3.9.
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59 unescape = html_parser.HTMLParser().unescape