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69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
# Copyright (c) 2016, 2018 Claudiu Popa <pcmanticore@gmail.com>
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# Copyright (c) 2018 David Poirier <david-poirier-csn@users.noreply.github.com>
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# Copyright (c) 2018 wgehalo <wgehalo@gmail.com>
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# Copyright (c) 2018 Ioana Tagirta <ioana.tagirta@gmail.com>
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# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
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# For details: https://github.com/PyCQA/astroid/blob/master/COPYING.LESSER
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import sys
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import six
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import astroid
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PY36 = sys.version_info >= (3, 6)
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def _hashlib_transform():
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signature = "value=''"
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template = """
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class %(name)s(object):
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def __init__(self, %(signature)s): pass
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def digest(self):
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return %(digest)s
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def copy(self):
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return self
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def update(self, value): pass
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def hexdigest(self):
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return ''
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@property
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def name(self):
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return %(name)r
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@property
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def block_size(self):
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return 1
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@property
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def digest_size(self):
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return 1
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"""
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algorithms_with_signature = dict.fromkeys(
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["md5", "sha1", "sha224", "sha256", "sha384", "sha512"], signature
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)
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if PY36:
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blake2b_signature = "data=b'', *, digest_size=64, key=b'', salt=b'', \
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person=b'', fanout=1, depth=1, leaf_size=0, node_offset=0, \
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node_depth=0, inner_size=0, last_node=False"
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blake2s_signature = "data=b'', *, digest_size=32, key=b'', salt=b'', \
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person=b'', fanout=1, depth=1, leaf_size=0, node_offset=0, \
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node_depth=0, inner_size=0, last_node=False"
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new_algorithms = dict.fromkeys(
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["sha3_224", "sha3_256", "sha3_384", "sha3_512", "shake_128", "shake_256"],
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signature,
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)
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algorithms_with_signature.update(new_algorithms)
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algorithms_with_signature.update(
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{"blake2b": blake2b_signature, "blake2s": blake2s_signature}
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)
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classes = "".join(
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template
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% {
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"name": hashfunc,
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"digest": 'b""' if six.PY3 else '""',
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"signature": signature,
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}
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for hashfunc, signature in algorithms_with_signature.items()
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)
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return astroid.parse(classes)
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astroid.register_module_extender(astroid.MANAGER, "hashlib", _hashlib_transform)
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