You've already forked python-uncompyle6
mirror of
https://github.com/rocky/python-uncompyle6.git
synced 2025-08-02 16:44:46 +08:00
101 lines
3.7 KiB
Python
101 lines
3.7 KiB
Python
# Copyright (c) 2016-2019, 2021-2022 by Rocky Bernstein
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
"""
|
|
Python 3.7 bytecode decompiler scanner
|
|
|
|
Does some additional massaging of xdis-disassembled instructions to
|
|
make things easier for decompilation.
|
|
|
|
This sets up opcodes Python's 3.7 and calls a generalized
|
|
scanner routine for Python 3.
|
|
"""
|
|
|
|
from typing import Tuple
|
|
from uncompyle6.scanners.scanner37base import Scanner37Base
|
|
|
|
# bytecode verification, verify(), uses JUMP_OPs from here
|
|
from xdis.opcodes import opcode_37 as opc
|
|
|
|
# bytecode verification, verify(), uses JUMP_OPS from here
|
|
JUMP_OPs = opc.JUMP_OPS
|
|
|
|
CONST_COLLECTIONS = ("CONST_LIST", "CONST_SET", "CONST_DICT")
|
|
|
|
|
|
class Scanner37(Scanner37Base):
|
|
def __init__(self, show_asm=None, is_pypy: bool=False):
|
|
Scanner37Base.__init__(self, (3, 7), show_asm)
|
|
self.is_pypy = is_pypy
|
|
return
|
|
|
|
pass
|
|
|
|
def ingest(
|
|
self, co, classname=None, code_objects={}, show_asm=None
|
|
) -> Tuple[list, dict]:
|
|
tokens, customize = Scanner37Base.ingest(self, co, classname, code_objects, show_asm)
|
|
new_tokens = []
|
|
for i, t in enumerate(tokens):
|
|
# things that smash new_tokens like BUILD_LIST have to come first.
|
|
if t.op in (
|
|
self.opc.BUILD_CONST_KEY_MAP,
|
|
self.opc.BUILD_LIST,
|
|
self.opc.BUILD_SET,
|
|
):
|
|
collection_type = (
|
|
"DICT"
|
|
if t.kind.startswith("BUILD_CONST_KEY_MAP")
|
|
else t.kind.split("_")[1]
|
|
)
|
|
new_tokens = self.bound_collection(
|
|
tokens, new_tokens, t, i, f"CONST_{collection_type}"
|
|
)
|
|
continue
|
|
|
|
# The lowest bit of flags indicates whether the
|
|
# var-keyword argument is placed at the top of the stack
|
|
if t.op == self.opc.CALL_FUNCTION_EX and t.attr & 1:
|
|
t.kind = "CALL_FUNCTION_EX_KW"
|
|
pass
|
|
elif t.op == self.opc.BUILD_STRING:
|
|
t.kind = "BUILD_STRING_%s" % t.attr
|
|
elif t.op == self.opc.CALL_FUNCTION_KW:
|
|
t.kind = "CALL_FUNCTION_KW_%s" % t.attr
|
|
elif t.op == self.opc.FORMAT_VALUE:
|
|
if t.attr & 0x4:
|
|
t.kind = "FORMAT_VALUE_ATTR"
|
|
pass
|
|
elif t.op == self.opc.BUILD_MAP_UNPACK_WITH_CALL:
|
|
t.kind = "BUILD_MAP_UNPACK_WITH_CALL_%d" % t.attr
|
|
elif not self.is_pypy and t.op == self.opc.BUILD_TUPLE_UNPACK_WITH_CALL:
|
|
t.kind = "BUILD_TUPLE_UNPACK_WITH_CALL_%d" % t.attr
|
|
new_tokens.append(t)
|
|
|
|
return new_tokens, customize
|
|
|
|
if __name__ == "__main__":
|
|
from xdis.version_info import PYTHON_VERSION_TRIPLE, version_tuple_to_str
|
|
|
|
if PYTHON_VERSION_TRIPLE[:2] == (3, 7):
|
|
import inspect
|
|
|
|
co = inspect.currentframe().f_code # type: ignore
|
|
tokens, customize = Scanner37().ingest(co)
|
|
for t in tokens:
|
|
print(t.format())
|
|
pass
|
|
else:
|
|
print("Need to be Python 3.7 to demo; I am version %s" % version_tuple_to_str())
|