You've already forked python-uncompyle6
mirror of
https://github.com/rocky/python-uncompyle6.git
synced 2025-08-03 00:45:53 +08:00
123 lines
3.5 KiB
Python
Executable File
123 lines
3.5 KiB
Python
Executable File
# Copyright (c) 2015-2018, 2021-2022 by Rocky Bernstein
|
|
"""
|
|
Python 2.7 bytecode ingester.
|
|
|
|
This massages tokenized 2.7 bytecode to make it more amenable for
|
|
grammar parsing.
|
|
"""
|
|
|
|
|
|
from uncompyle6.scanners.scanner2 import Scanner2
|
|
|
|
from xdis.version_info import version_tuple_to_str
|
|
import sys
|
|
|
|
intern = sys.intern
|
|
|
|
# bytecode verification, verify(), uses JUMP_OPs from here
|
|
from xdis.opcodes import opcode_27
|
|
|
|
JUMP_OPS = opcode_27.JUMP_OPs
|
|
|
|
|
|
class Scanner27(Scanner2):
|
|
def __init__(self, show_asm=False, is_pypy=False):
|
|
super(Scanner27, self).__init__((2, 7), show_asm, is_pypy)
|
|
|
|
# opcodes that start statements
|
|
self.statement_opcodes = frozenset(
|
|
self.statement_opcodes
|
|
| set(
|
|
[
|
|
# New in 2.7
|
|
self.opc.SETUP_WITH,
|
|
self.opc.STORE_SLICE_0,
|
|
self.opc.STORE_SLICE_1,
|
|
self.opc.STORE_SLICE_2,
|
|
self.opc.STORE_SLICE_3,
|
|
self.opc.DELETE_SLICE_0,
|
|
self.opc.DELETE_SLICE_1,
|
|
self.opc.DELETE_SLICE_2,
|
|
self.opc.DELETE_SLICE_3,
|
|
]
|
|
)
|
|
)
|
|
|
|
# opcodes which expect a variable number pushed values and whose
|
|
# count is in the opcode. For parsing we generally change the
|
|
# opcode name to include that number.
|
|
varargs_ops = set(
|
|
[
|
|
self.opc.BUILD_LIST,
|
|
self.opc.BUILD_TUPLE,
|
|
self.opc.BUILD_SLICE,
|
|
self.opc.UNPACK_SEQUENCE,
|
|
self.opc.MAKE_FUNCTION,
|
|
self.opc.CALL_FUNCTION,
|
|
self.opc.MAKE_CLOSURE,
|
|
self.opc.CALL_FUNCTION_VAR,
|
|
self.opc.CALL_FUNCTION_KW,
|
|
self.opc.CALL_FUNCTION_VAR_KW,
|
|
self.opc.DUP_TOPX,
|
|
self.opc.RAISE_VARARGS,
|
|
# New in Python 2.7
|
|
self.opc.BUILD_SET,
|
|
self.opc.BUILD_MAP,
|
|
]
|
|
)
|
|
|
|
if is_pypy:
|
|
varargs_ops.add(self.opc.CALL_METHOD)
|
|
self.varargs_ops = frozenset(varargs_ops)
|
|
|
|
# "setup" opcodes
|
|
self.setup_ops = frozenset(
|
|
[
|
|
self.opc.SETUP_EXCEPT,
|
|
self.opc.SETUP_FINALLY,
|
|
# New in 2.7
|
|
self.opc.SETUP_WITH,
|
|
]
|
|
)
|
|
|
|
# opcodes that store values into a variable
|
|
self.designator_ops = frozenset(
|
|
[
|
|
self.opc.STORE_FAST,
|
|
self.opc.STORE_NAME,
|
|
self.opc.STORE_GLOBAL,
|
|
self.opc.STORE_DEREF,
|
|
self.opc.STORE_ATTR,
|
|
self.opc.STORE_SLICE_0,
|
|
self.opc.STORE_SLICE_1,
|
|
self.opc.STORE_SLICE_2,
|
|
self.opc.STORE_SLICE_3,
|
|
self.opc.STORE_SUBSCR,
|
|
self.opc.UNPACK_SEQUENCE,
|
|
self.opc.JUMP_ABSOLUTE,
|
|
]
|
|
)
|
|
|
|
self.pop_jump_if_or_pop = frozenset(
|
|
[self.opc.JUMP_IF_FALSE_OR_POP, self.opc.JUMP_IF_TRUE_OR_POP]
|
|
)
|
|
|
|
return
|
|
|
|
pass
|
|
|
|
|
|
if __name__ == "__main__":
|
|
from xdis.version_info import PYTHON_VERSION_TRIPLE
|
|
|
|
if PYTHON_VERSION_TRIPLE[:2] == (2, 7):
|
|
import inspect
|
|
|
|
co = inspect.currentframe().f_code # type: ignore
|
|
tokens, customize = Scanner27().ingest(co)
|
|
for t in tokens:
|
|
print(t.format())
|
|
pass
|
|
else:
|
|
print("Need to be Python 2.7 to demo; I am version %s" % version_tuple_to_str())
|