You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
60 lines
1.3 KiB
60 lines
1.3 KiB
5 years ago
|
import dis
|
||
|
|
import array
|
||
|
|
import collections
|
||
|
|
|
||
|
|
try:
|
||
|
|
import html
|
||
|
|
except ImportError:
|
||
|
|
html = None
|
||
|
|
|
||
|
|
from setuptools.extern import six
|
||
|
|
from setuptools.extern.six.moves import html_parser
|
||
|
|
|
||
|
|
__metaclass__ = type
|
||
|
|
|
||
|
|
OpArg = collections.namedtuple('OpArg', 'opcode arg')
|
||
|
|
|
||
|
|
|
||
|
|
class Bytecode_compat:
|
||
|
|
def __init__(self, code):
|
||
|
|
self.code = code
|
||
|
|
|
||
|
|
def __iter__(self):
|
||
|
|
"""Yield '(op,arg)' pair for each operation in code object 'code'"""
|
||
|
|
|
||
|
|
bytes = array.array('b', self.code.co_code)
|
||
|
|
eof = len(self.code.co_code)
|
||
|
|
|
||
|
|
ptr = 0
|
||
|
|
extended_arg = 0
|
||
|
|
|
||
|
|
while ptr < eof:
|
||
|
|
|
||
|
|
op = bytes[ptr]
|
||
|
|
|
||
|
|
if op >= dis.HAVE_ARGUMENT:
|
||
|
|
|
||
|
|
arg = bytes[ptr + 1] + bytes[ptr + 2] * 256 + extended_arg
|
||
|
|
ptr += 3
|
||
|
|
|
||
|
|
if op == dis.EXTENDED_ARG:
|
||
|
|
long_type = six.integer_types[-1]
|
||
|
|
extended_arg = arg * long_type(65536)
|
||
|
|
continue
|
||
|
|
|
||
|
|
else:
|
||
|
|
arg = None
|
||
|
|
ptr += 1
|
||
|
|
|
||
|
|
yield OpArg(op, arg)
|
||
|
|
|
||
|
|
|
||
|
|
Bytecode = getattr(dis, 'Bytecode', Bytecode_compat)
|
||
|
|
|
||
|
|
|
||
|
|
unescape = getattr(html, 'unescape', None)
|
||
|
|
if unescape is None:
|
||
|
|
# HTMLParser.unescape is deprecated since Python 3.4, and will be removed
|
||
|
|
# from 3.9.
|
||
|
|
unescape = html_parser.HTMLParser().unescape
|