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cpython/Lib/test/test_dis.py

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# Minimal tests for dis module
import ast
import contextlib
import dis
import functools
import io
import re
import sys
import types
import unittest
from test.support import (captured_stdout, requires_debug_ranges,
requires_specialization, cpython_only)
from test.support.bytecode_helper import BytecodeTestCase
import opcode
CACHE = dis.opmap["CACHE"]
def get_tb():
def _error():
try:
1 / 0
except Exception as e:
tb = e.__traceback__
return tb
tb = _error()
while tb.tb_next:
tb = tb.tb_next
return tb
TRACEBACK_CODE = get_tb().tb_frame.f_code
class _C:
def __init__(self, x):
self.x = x == 1
@staticmethod
def sm(x):
x = x == 1
@classmethod
def cm(cls, x):
cls.x = x == 1
dis_c_instance_method = """\
%3d RESUME 0
%3d LOAD_FAST 1 (x)
LOAD_CONST 1 (1)
COMPARE_OP 72 (==)
LOAD_FAST 0 (self)
STORE_ATTR 0 (x)
RETURN_CONST 0 (None)
""" % (_C.__init__.__code__.co_firstlineno, _C.__init__.__code__.co_firstlineno + 1,)
dis_c_instance_method_bytes = """\
RESUME 0
LOAD_FAST 1
LOAD_CONST 1
COMPARE_OP 72 (==)
LOAD_FAST 0
STORE_ATTR 0
RETURN_CONST 0
"""
dis_c_class_method = """\
%3d RESUME 0
%3d LOAD_FAST 1 (x)
LOAD_CONST 1 (1)
COMPARE_OP 72 (==)
LOAD_FAST 0 (cls)
STORE_ATTR 0 (x)
RETURN_CONST 0 (None)
""" % (_C.cm.__code__.co_firstlineno, _C.cm.__code__.co_firstlineno + 2,)
dis_c_static_method = """\
%3d RESUME 0
%3d LOAD_FAST 0 (x)
LOAD_CONST 1 (1)
COMPARE_OP 72 (==)
STORE_FAST 0 (x)
RETURN_CONST 0 (None)
""" % (_C.sm.__code__.co_firstlineno, _C.sm.__code__.co_firstlineno + 2,)
# Class disassembling info has an extra newline at end.
dis_c = """\
Disassembly of %s:
%s
Disassembly of %s:
%s
Disassembly of %s:
%s
""" % (_C.__init__.__name__, dis_c_instance_method,
_C.cm.__name__, dis_c_class_method,
_C.sm.__name__, dis_c_static_method)
def _f(a):
print(a)
return 1
dis_f = """\
%3d RESUME 0
%3d LOAD_GLOBAL 1 (print + NULL)
LOAD_FAST 0 (a)
CALL 1
POP_TOP
%3d RETURN_CONST 1 (1)
""" % (_f.__code__.co_firstlineno,
_f.__code__.co_firstlineno + 1,
_f.__code__.co_firstlineno + 2)
dis_f_with_offsets = """\
%3d 0 RESUME 0
%3d 2 LOAD_GLOBAL 1 (print + NULL)
12 LOAD_FAST 0 (a)
14 CALL 1
22 POP_TOP
%3d 24 RETURN_CONST 1 (1)
""" % (_f.__code__.co_firstlineno,
_f.__code__.co_firstlineno + 1,
_f.__code__.co_firstlineno + 2)
dis_f_with_positions_format = f"""\
%-14s RESUME 0
%-14s LOAD_GLOBAL 1 (print + NULL)
%-14s LOAD_FAST 0 (a)
%-14s CALL 1
%-14s POP_TOP
%-14s RETURN_CONST 1 (1)
"""
dis_f_co_code = """\
RESUME 0
LOAD_GLOBAL 1
LOAD_FAST 0
CALL 1
POP_TOP
RETURN_CONST 1
"""
def bug708901():
for res in range(1,
10):
pass
dis_bug708901 = """\
%3d RESUME 0
%3d LOAD_GLOBAL 1 (range + NULL)
LOAD_CONST 1 (1)
%3d LOAD_CONST 2 (10)
%3d CALL 2
GET_ITER
L1: FOR_ITER 3 (to L2)
STORE_FAST 0 (res)
%3d JUMP_BACKWARD 5 (to L1)
%3d L2: END_FOR
POP_TOP
RETURN_CONST 0 (None)
""" % (bug708901.__code__.co_firstlineno,
bug708901.__code__.co_firstlineno + 1,
bug708901.__code__.co_firstlineno + 2,
bug708901.__code__.co_firstlineno + 1,
bug708901.__code__.co_firstlineno + 3,
bug708901.__code__.co_firstlineno + 1)
def bug1333982(x=[]):
assert 0, ((s for s in x) +
1)
pass
dis_bug1333982 = """\
%3d RESUME 0
%3d LOAD_COMMON_CONSTANT 0 (AssertionError)
LOAD_CONST 1 (<code object <genexpr> at 0x..., file "%s", line %d>)
MAKE_FUNCTION
LOAD_FAST 0 (x)
GET_ITER
CALL 0
%3d LOAD_CONST 2 (1)
%3d BINARY_OP 0 (+)
CALL 0
RAISE_VARARGS 1
""" % (bug1333982.__code__.co_firstlineno,
bug1333982.__code__.co_firstlineno + 1,
__file__,
bug1333982.__code__.co_firstlineno + 1,
bug1333982.__code__.co_firstlineno + 2,
bug1333982.__code__.co_firstlineno + 1)
def bug42562():
pass
# Set line number for 'pass' to None
bug42562.__code__ = bug42562.__code__.replace(co_linetable=b'\xf8')
dis_bug42562 = """\
RESUME 0
RETURN_CONST 0 (None)
"""
# Extended arg followed by NOP
code_bug_45757 = bytes([
opcode.opmap['EXTENDED_ARG'], 0x01, # EXTENDED_ARG 0x01
opcode.opmap['NOP'], 0xFF, # NOP 0xFF
opcode.opmap['EXTENDED_ARG'], 0x01, # EXTENDED_ARG 0x01
opcode.opmap['LOAD_CONST'], 0x29, # LOAD_CONST 0x29
opcode.opmap['RETURN_VALUE'], 0x00, # RETURN_VALUE 0x00
])
dis_bug_45757 = """\
EXTENDED_ARG 1
NOP
EXTENDED_ARG 1
LOAD_CONST 297
RETURN_VALUE
"""
# [255, 255, 255, 252] is -4 in a 4 byte signed integer
bug46724 = bytes([
opcode.EXTENDED_ARG, 255,
opcode.EXTENDED_ARG, 255,
opcode.EXTENDED_ARG, 255,
opcode.opmap['JUMP_FORWARD'], 252,
])
dis_bug46724 = """\
L1: EXTENDED_ARG 255
EXTENDED_ARG 65535
EXTENDED_ARG 16777215
JUMP_FORWARD -4 (to L1)
"""
def func_w_kwargs(a, b, **c):
pass
def wrap_func_w_kwargs():
func_w_kwargs(1, 2, c=5)
dis_kw_names = """\
%3d RESUME 0
%3d LOAD_GLOBAL 1 (func_w_kwargs + NULL)
LOAD_CONST 1 (1)
LOAD_CONST 2 (2)
LOAD_CONST 3 (5)
LOAD_CONST 4 (('c',))
CALL_KW 3
POP_TOP
RETURN_CONST 0 (None)
""" % (wrap_func_w_kwargs.__code__.co_firstlineno,
wrap_func_w_kwargs.__code__.co_firstlineno + 1)
dis_intrinsic_1_2 = """\
0 RESUME 0
1 LOAD_CONST 0 (0)
LOAD_CONST 1 (('*',))
IMPORT_NAME 0 (math)
CALL_INTRINSIC_1 2 (INTRINSIC_IMPORT_STAR)
POP_TOP
RETURN_CONST 2 (None)
"""
dis_intrinsic_1_5 = """\
0 RESUME 0
1 LOAD_NAME 0 (a)
CALL_INTRINSIC_1 5 (INTRINSIC_UNARY_POSITIVE)
RETURN_VALUE
"""
dis_intrinsic_1_6 = """\
0 RESUME 0
1 BUILD_LIST 0
LOAD_NAME 0 (a)
LIST_EXTEND 1
CALL_INTRINSIC_1 6 (INTRINSIC_LIST_TO_TUPLE)
RETURN_VALUE
"""
_BIG_LINENO_FORMAT = """\
1 RESUME 0
%3d LOAD_GLOBAL 0 (spam)
POP_TOP
RETURN_CONST 0 (None)
"""
_BIG_LINENO_FORMAT2 = """\
1 RESUME 0
%4d LOAD_GLOBAL 0 (spam)
POP_TOP
RETURN_CONST 0 (None)
"""
dis_module_expected_results = """\
Disassembly of f:
4 RESUME 0
RETURN_CONST 0 (None)
Disassembly of g:
5 RESUME 0
RETURN_CONST 0 (None)
"""
expr_str = "x + 1"
dis_expr_str = """\
0 RESUME 0
1 LOAD_NAME 0 (x)
LOAD_CONST 0 (1)
BINARY_OP 0 (+)
RETURN_VALUE
"""
simple_stmt_str = "x = x + 1"
dis_simple_stmt_str = """\
0 RESUME 0
1 LOAD_NAME 0 (x)
LOAD_CONST 0 (1)
BINARY_OP 0 (+)
STORE_NAME 0 (x)
RETURN_CONST 1 (None)
"""
annot_stmt_str = """\
x: int = 1
y: fun(1)
lst[fun(0)]: int = 1
"""
# leading newline is for a reason (tests lineno)
dis_annot_stmt_str = """\
0 RESUME 0
2 LOAD_CONST 0 (1)
STORE_NAME 0 (x)
4 LOAD_CONST 0 (1)
LOAD_NAME 1 (lst)
LOAD_NAME 2 (fun)
PUSH_NULL
LOAD_CONST 1 (0)
CALL 1
STORE_SUBSCR
2 LOAD_CONST 2 (<code object __annotate__ at 0x..., file "<dis>", line 2>)
MAKE_FUNCTION
STORE_NAME 3 (__annotate__)
RETURN_CONST 3 (None)
"""
fn_with_annotate_str = """
def foo(a: int, b: str) -> str:
return a * b
"""
dis_fn_with_annotate_str = """\
0 RESUME 0
2 LOAD_CONST 0 (<code object __annotate__ at 0x..., file "<dis>", line 2>)
MAKE_FUNCTION
LOAD_CONST 1 (<code object foo at 0x..., file "<dis>", line 2>)
MAKE_FUNCTION
SET_FUNCTION_ATTRIBUTE 16 (annotate)
STORE_NAME 0 (foo)
RETURN_CONST 2 (None)
"""
compound_stmt_str = """\
x = 0
while 1:
x += 1"""
# Trailing newline has been deliberately omitted
dis_compound_stmt_str = """\
0 RESUME 0
1 LOAD_CONST 0 (0)
STORE_NAME 0 (x)
2 L1: NOP
3 LOAD_NAME 0 (x)
LOAD_CONST 1 (1)
BINARY_OP 13 (+=)
STORE_NAME 0 (x)
JUMP_BACKWARD 8 (to L1)
"""
dis_traceback = """\
%4d RESUME 0
%4d NOP
%4d L1: LOAD_CONST 1 (1)
LOAD_CONST 2 (0)
--> BINARY_OP 11 (/)
POP_TOP
%4d L2: LOAD_FAST_CHECK 1 (tb)
RETURN_VALUE
-- L3: PUSH_EXC_INFO
%4d LOAD_GLOBAL 0 (Exception)
CHECK_EXC_MATCH
POP_JUMP_IF_FALSE 23 (to L7)
STORE_FAST 0 (e)
%4d L4: LOAD_FAST 0 (e)
LOAD_ATTR 2 (__traceback__)
STORE_FAST 1 (tb)
L5: POP_EXCEPT
LOAD_CONST 0 (None)
STORE_FAST 0 (e)
DELETE_FAST 0 (e)
%4d LOAD_FAST 1 (tb)
RETURN_VALUE
-- L6: LOAD_CONST 0 (None)
STORE_FAST 0 (e)
DELETE_FAST 0 (e)
RERAISE 1
%4d L7: RERAISE 0
-- L8: COPY 3
POP_EXCEPT
RERAISE 1
ExceptionTable:
L1 to L2 -> L3 [0]
L3 to L4 -> L8 [1] lasti
L4 to L5 -> L6 [1] lasti
L6 to L8 -> L8 [1] lasti
""" % (TRACEBACK_CODE.co_firstlineno,
TRACEBACK_CODE.co_firstlineno + 1,
TRACEBACK_CODE.co_firstlineno + 2,
TRACEBACK_CODE.co_firstlineno + 5,
TRACEBACK_CODE.co_firstlineno + 3,
TRACEBACK_CODE.co_firstlineno + 4,
TRACEBACK_CODE.co_firstlineno + 5,
TRACEBACK_CODE.co_firstlineno + 3)
def _fstring(a, b, c, d):
return f'{a} {b:4} {c!r} {d!r:4}'
dis_fstring = """\
%3d RESUME 0
%3d LOAD_FAST 0 (a)
FORMAT_SIMPLE
LOAD_CONST 1 (' ')
LOAD_FAST 1 (b)
LOAD_CONST 2 ('4')
FORMAT_WITH_SPEC
LOAD_CONST 1 (' ')
LOAD_FAST 2 (c)
CONVERT_VALUE 2 (repr)
FORMAT_SIMPLE
LOAD_CONST 1 (' ')
LOAD_FAST 3 (d)
CONVERT_VALUE 2 (repr)
LOAD_CONST 2 ('4')
FORMAT_WITH_SPEC
BUILD_STRING 7
RETURN_VALUE
""" % (_fstring.__code__.co_firstlineno, _fstring.__code__.co_firstlineno + 1)
def _with(c):
with c:
x = 1
y = 2
dis_with = """\
%4d RESUME 0
%4d LOAD_FAST 0 (c)
COPY 1
LOAD_SPECIAL 1 (__exit__)
SWAP 2
SWAP 3
LOAD_SPECIAL 0 (__enter__)
CALL 0
L1: POP_TOP
%4d LOAD_CONST 1 (1)
STORE_FAST 1 (x)
%4d L2: LOAD_CONST 0 (None)
LOAD_CONST 0 (None)
LOAD_CONST 0 (None)
CALL 3
POP_TOP
%4d LOAD_CONST 2 (2)
STORE_FAST 2 (y)
RETURN_CONST 0 (None)
%4d L3: PUSH_EXC_INFO
WITH_EXCEPT_START
TO_BOOL
POP_JUMP_IF_TRUE 1 (to L4)
RERAISE 2
L4: POP_TOP
L5: POP_EXCEPT
POP_TOP
POP_TOP
POP_TOP
%4d LOAD_CONST 2 (2)
STORE_FAST 2 (y)
RETURN_CONST 0 (None)
-- L6: COPY 3
POP_EXCEPT
RERAISE 1
ExceptionTable:
L1 to L2 -> L3 [2] lasti
L3 to L5 -> L6 [4] lasti
""" % (_with.__code__.co_firstlineno,
_with.__code__.co_firstlineno + 1,
_with.__code__.co_firstlineno + 2,
_with.__code__.co_firstlineno + 1,
_with.__code__.co_firstlineno + 3,
_with.__code__.co_firstlineno + 1,
_with.__code__.co_firstlineno + 3,
)
async def _asyncwith(c):
async with c:
x = 1
y = 2
dis_asyncwith = """\
%4d RETURN_GENERATOR
POP_TOP
L1: RESUME 0
%4d LOAD_FAST 0 (c)
COPY 1
LOAD_SPECIAL 3 (__aexit__)
SWAP 2
SWAP 3
LOAD_SPECIAL 2 (__aenter__)
CALL 0
GET_AWAITABLE 1
LOAD_CONST 0 (None)
L2: SEND 3 (to L5)
L3: YIELD_VALUE 1
L4: RESUME 3
JUMP_BACKWARD_NO_INTERRUPT 5 (to L2)
L5: END_SEND
L6: POP_TOP
%4d LOAD_CONST 1 (1)
STORE_FAST 1 (x)
%4d L7: LOAD_CONST 0 (None)
LOAD_CONST 0 (None)
LOAD_CONST 0 (None)
CALL 3
GET_AWAITABLE 2
LOAD_CONST 0 (None)
L8: SEND 3 (to L11)
L9: YIELD_VALUE 1
L10: RESUME 3
JUMP_BACKWARD_NO_INTERRUPT 5 (to L8)
L11: END_SEND
POP_TOP
%4d LOAD_CONST 2 (2)
STORE_FAST 2 (y)
RETURN_CONST 0 (None)
%4d L12: CLEANUP_THROW
L13: JUMP_BACKWARD_NO_INTERRUPT 25 (to L5)
L14: CLEANUP_THROW
L15: JUMP_BACKWARD_NO_INTERRUPT 9 (to L11)
L16: PUSH_EXC_INFO
WITH_EXCEPT_START
GET_AWAITABLE 2
LOAD_CONST 0 (None)
L17: SEND 4 (to L21)
L18: YIELD_VALUE 1
L19: RESUME 3
JUMP_BACKWARD_NO_INTERRUPT 5 (to L17)
L20: CLEANUP_THROW
L21: END_SEND
TO_BOOL
POP_JUMP_IF_TRUE 1 (to L22)
RERAISE 2
L22: POP_TOP
L23: POP_EXCEPT
POP_TOP
POP_TOP
POP_TOP
%4d LOAD_CONST 2 (2)
STORE_FAST 2 (y)
RETURN_CONST 0 (None)
-- L24: COPY 3
POP_EXCEPT
RERAISE 1
L25: CALL_INTRINSIC_1 3 (INTRINSIC_STOPITERATION_ERROR)
RERAISE 1
ExceptionTable:
L1 to L3 -> L25 [0] lasti
L3 to L4 -> L12 [4]
L4 to L6 -> L25 [0] lasti
L6 to L7 -> L16 [2] lasti
L7 to L9 -> L25 [0] lasti
L9 to L10 -> L14 [2]
L10 to L13 -> L25 [0] lasti
L14 to L15 -> L25 [0] lasti
L16 to L18 -> L24 [4] lasti
L18 to L19 -> L20 [7]
L19 to L23 -> L24 [4] lasti
L23 to L25 -> L25 [0] lasti
""" % (_asyncwith.__code__.co_firstlineno,
_asyncwith.__code__.co_firstlineno + 1,
_asyncwith.__code__.co_firstlineno + 2,
_asyncwith.__code__.co_firstlineno + 1,
_asyncwith.__code__.co_firstlineno + 3,
_asyncwith.__code__.co_firstlineno + 1,
_asyncwith.__code__.co_firstlineno + 3,
)
def _tryfinally(a, b):
try:
return a
finally:
b()
def _tryfinallyconst(b):
try:
return 1
finally:
b()
dis_tryfinally = """\
%4d RESUME 0
%4d NOP
%4d L1: LOAD_FAST 0 (a)
%4d L2: LOAD_FAST 1 (b)
PUSH_NULL
CALL 0
POP_TOP
RETURN_VALUE
-- L3: PUSH_EXC_INFO
%4d LOAD_FAST 1 (b)
PUSH_NULL
CALL 0
POP_TOP
RERAISE 0
-- L4: COPY 3
POP_EXCEPT
RERAISE 1
ExceptionTable:
L1 to L2 -> L3 [0]
L3 to L4 -> L4 [1] lasti
""" % (_tryfinally.__code__.co_firstlineno,
_tryfinally.__code__.co_firstlineno + 1,
_tryfinally.__code__.co_firstlineno + 2,
_tryfinally.__code__.co_firstlineno + 4,
_tryfinally.__code__.co_firstlineno + 4,
)
dis_tryfinallyconst = """\
%4d RESUME 0
%4d NOP
%4d NOP
%4d LOAD_FAST 0 (b)
PUSH_NULL
CALL 0
POP_TOP
RETURN_CONST 1 (1)
-- L1: PUSH_EXC_INFO
%4d LOAD_FAST 0 (b)
PUSH_NULL
CALL 0
POP_TOP
RERAISE 0
-- L2: COPY 3
POP_EXCEPT
RERAISE 1
ExceptionTable:
L1 to L2 -> L2 [1] lasti
""" % (_tryfinallyconst.__code__.co_firstlineno,
_tryfinallyconst.__code__.co_firstlineno + 1,
_tryfinallyconst.__code__.co_firstlineno + 2,
_tryfinallyconst.__code__.co_firstlineno + 4,
_tryfinallyconst.__code__.co_firstlineno + 4,
)
def _g(x):
yield x
async def _ag(x):
yield x
async def _co(x):
async for item in _ag(x):
pass
def _h(y):
def foo(x):
'''funcdoc'''
return list(x + z for z in y)
return foo
dis_nested_0 = """\
-- MAKE_CELL 0 (y)
%4d RESUME 0
%4d LOAD_FAST 0 (y)
BUILD_TUPLE 1
LOAD_CONST 1 (<code object foo at 0x..., file "%s", line %d>)
MAKE_FUNCTION
SET_FUNCTION_ATTRIBUTE 8 (closure)
STORE_FAST 1 (foo)
%4d LOAD_FAST 1 (foo)
RETURN_VALUE
""" % (_h.__code__.co_firstlineno,
_h.__code__.co_firstlineno + 1,
__file__,
_h.__code__.co_firstlineno + 1,
_h.__code__.co_firstlineno + 4,
)
dis_nested_1 = """%s
Disassembly of <code object foo at 0x..., file "%s", line %d>:
-- COPY_FREE_VARS 1
MAKE_CELL 0 (x)
%4d RESUME 0
%4d LOAD_GLOBAL 1 (list + NULL)
LOAD_FAST 0 (x)
BUILD_TUPLE 1
LOAD_CONST 1 (<code object <genexpr> at 0x..., file "%s", line %d>)
MAKE_FUNCTION
SET_FUNCTION_ATTRIBUTE 8 (closure)
LOAD_DEREF 1 (y)
GET_ITER
CALL 0
CALL 1
RETURN_VALUE
""" % (dis_nested_0,
__file__,
_h.__code__.co_firstlineno + 1,
_h.__code__.co_firstlineno + 1,
_h.__code__.co_firstlineno + 3,
__file__,
_h.__code__.co_firstlineno + 3,
)
dis_nested_2 = """%s
Disassembly of <code object <genexpr> at 0x..., file "%s", line %d>:
-- COPY_FREE_VARS 1
%4d RETURN_GENERATOR
POP_TOP
L1: RESUME 0
LOAD_FAST 0 (.0)
L2: FOR_ITER 10 (to L3)
STORE_FAST 1 (z)
LOAD_DEREF 2 (x)
LOAD_FAST 1 (z)
BINARY_OP 0 (+)
YIELD_VALUE 0
RESUME 5
POP_TOP
JUMP_BACKWARD 12 (to L2)
L3: END_FOR
POP_TOP
RETURN_CONST 0 (None)
-- L4: CALL_INTRINSIC_1 3 (INTRINSIC_STOPITERATION_ERROR)
RERAISE 1
ExceptionTable:
L1 to L4 -> L4 [0] lasti
""" % (dis_nested_1,
__file__,
_h.__code__.co_firstlineno + 3,
_h.__code__.co_firstlineno + 3,
)
def load_test(x, y=0):
a, b = x, y
return a, b
dis_load_test_quickened_code = """\
%3d RESUME_CHECK 0
%3d LOAD_FAST_LOAD_FAST 1 (x, y)
STORE_FAST_STORE_FAST 50 (b, a)
%3d LOAD_FAST_LOAD_FAST 35 (a, b)
BUILD_TUPLE 2
RETURN_VALUE
""" % (load_test.__code__.co_firstlineno,
load_test.__code__.co_firstlineno + 1,
load_test.__code__.co_firstlineno + 2)
def loop_test():
for i in [1, 2, 3] * 3:
load_test(i)
dis_loop_test_quickened_code = """\
%3d RESUME_CHECK 0
%3d BUILD_LIST 0
LOAD_CONST 1 ((1, 2, 3))
LIST_EXTEND 1
LOAD_CONST 2 (3)
BINARY_OP 5 (*)
GET_ITER
L1: FOR_ITER_LIST 14 (to L2)
STORE_FAST 0 (i)
%3d LOAD_GLOBAL_MODULE 1 (load_test + NULL)
LOAD_FAST 0 (i)
CALL_PY_GENERAL 1
POP_TOP
JUMP_BACKWARD 16 (to L1)
%3d L2: END_FOR
POP_TOP
RETURN_CONST 0 (None)
""" % (loop_test.__code__.co_firstlineno,
loop_test.__code__.co_firstlineno + 1,
loop_test.__code__.co_firstlineno + 2,
loop_test.__code__.co_firstlineno + 1,)
def extended_arg_quick():
*_, _ = ...
dis_extended_arg_quick_code = """\
%3d RESUME 0
%3d LOAD_CONST 1 (Ellipsis)
EXTENDED_ARG 1
UNPACK_EX 256
POP_TOP
STORE_FAST 0 (_)
RETURN_CONST 0 (None)
"""% (extended_arg_quick.__code__.co_firstlineno,
extended_arg_quick.__code__.co_firstlineno + 1,)
ADAPTIVE_WARMUP_DELAY = 2
class DisTestBase(unittest.TestCase):
"Common utilities for DisTests and TestDisTraceback"
def strip_addresses(self, text):
return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text)
def assert_exception_table_increasing(self, lines):
prev_start, prev_end = -1, -1
count = 0
for line in lines:
m = re.match(r' L(\d+) to L(\d+) -> L\d+ \[\d+\]', line)
start, end = [int(g) for g in m.groups()]
self.assertGreaterEqual(end, start)
self.assertGreaterEqual(start, prev_end)
prev_start, prev_end = start, end
count += 1
return count
def do_disassembly_compare(self, got, expected):
if got != expected:
got = self.strip_addresses(got)
self.assertEqual(got, expected)
class DisTests(DisTestBase):
maxDiff = None
def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs):
# We want to test the default printing behaviour, not the file arg
output = io.StringIO()
with contextlib.redirect_stdout(output):
if wrapper:
dis.dis(func, **kwargs)
else:
dis.disassemble(func, lasti, **kwargs)
return output.getvalue()
def get_disassemble_as_string(self, func, lasti=-1):
return self.get_disassembly(func, lasti, False)
def do_disassembly_test(self, func, expected, **kwargs):
self.maxDiff = None
got = self.get_disassembly(func, depth=0, **kwargs)
self.do_disassembly_compare(got, expected)
# Add checks for dis.disco
if hasattr(func, '__code__'):
got_disco = io.StringIO()
with contextlib.redirect_stdout(got_disco):
dis.disco(func.__code__, **kwargs)
self.do_disassembly_compare(got_disco.getvalue(), expected)
def test_opmap(self):
self.assertEqual(dis.opmap["CACHE"], 0)
self.assertIn(dis.opmap["LOAD_CONST"], dis.hasconst)
self.assertIn(dis.opmap["STORE_NAME"], dis.hasname)
def test_opname(self):
self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
def test_boundaries(self):
self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG)
def test_widths(self):
long_opcodes = set(['JUMP_BACKWARD_NO_INTERRUPT',
'INSTRUMENTED_CALL_FUNCTION_EX'])
for opcode, opname in enumerate(dis.opname):
if opname in long_opcodes or opname.startswith("INSTRUMENTED"):
continue
with self.subTest(opname=opname):
width = dis._OPNAME_WIDTH
if opcode in dis.hasarg:
width += 1 + dis._OPARG_WIDTH
self.assertLessEqual(len(opname), width)
def test_dis(self):
self.do_disassembly_test(_f, dis_f)
def test_dis_with_offsets(self):
self.do_disassembly_test(_f, dis_f_with_offsets, show_offsets=True)
@requires_debug_ranges()
def test_dis_with_all_positions(self):
def format_instr_positions(instr):
values = tuple('?' if p is None else p for p in instr.positions)
return '%s:%s-%s:%s' % (values[0], values[2], values[1], values[3])
instrs = list(dis.get_instructions(_f))
for instr in instrs:
with self.subTest(instr=instr):
self.assertTrue(all(p is not None for p in instr.positions))
positions = tuple(map(format_instr_positions, instrs))
expected = dis_f_with_positions_format % positions
self.do_disassembly_test(_f, expected, show_positions=True)
@requires_debug_ranges()
def test_dis_with_some_positions(self):
code = ("def f():\n"
" try: pass\n"
" finally:pass")
f = compile(ast.parse(code), "?", "exec").co_consts[0]
expect = '\n'.join([
'1:0-1:0 RESUME 0',
'',
'2:3-3:15 NOP',
'',
'3:11-3:15 RETURN_CONST 0 (None)',
'',
' -- L1: PUSH_EXC_INFO',
'',
'3:11-3:15 RERAISE 0',
'',
' -- L2: COPY 3',
' -- POP_EXCEPT',
' -- RERAISE 1',
'ExceptionTable:',
' L1 to L2 -> L2 [1] lasti',
'',
])
self.do_disassembly_test(f, expect, show_positions=True)
@requires_debug_ranges()
def test_dis_with_linenos_but_no_columns(self):
code = "def f():\n\tx = 1"
tree = ast.parse(code)
func = tree.body[0]
ass_x = func.body[0].targets[0]
# remove columns information but keep line information
ass_x.col_offset = ass_x.end_col_offset = -1
f = compile(tree, "?", "exec").co_consts[0]
expect = '\n'.join([
'1:0-1:0 RESUME 0',
'',
'2:5-2:6 LOAD_CONST 1 (1)',
'2:?-2:? STORE_FAST 0 (x)',
'2:?-2:? RETURN_CONST 0 (None)',
'',
])
self.do_disassembly_test(f, expect, show_positions=True)
def test_dis_with_no_positions(self):
def f():
pass
f.__code__ = f.__code__.replace(co_linetable=b'')
expect = '\n'.join([
' RESUME 0',
' RETURN_CONST 0 (None)',
'',
])
self.do_disassembly_test(f, expect, show_positions=True)
def test_bug_708901(self):
self.do_disassembly_test(bug708901, dis_bug708901)
def test_bug_1333982(self):
# This one is checking bytecodes generated for an `assert` statement,
# so fails if the tests are run with -O. Skip this test then.
if not __debug__:
self.skipTest('need asserts, run without -O')
self.do_disassembly_test(bug1333982, dis_bug1333982)
def test_bug_42562(self):
self.do_disassembly_test(bug42562, dis_bug42562)
def test_bug_45757(self):
# Extended arg followed by NOP
self.do_disassembly_test(code_bug_45757, dis_bug_45757)
def test_bug_46724(self):
# Test that negative operargs are handled properly
self.do_disassembly_test(bug46724, dis_bug46724)
def test_kw_names(self):
# Test that value is displayed for keyword argument names:
self.do_disassembly_test(wrap_func_w_kwargs, dis_kw_names)
def test_intrinsic_1(self):
# Test that argrepr is displayed for CALL_INTRINSIC_1
self.do_disassembly_test("from math import *", dis_intrinsic_1_2)
self.do_disassembly_test("+a", dis_intrinsic_1_5)
self.do_disassembly_test("(*a,)", dis_intrinsic_1_6)
def test_intrinsic_2(self):
self.assertIn("CALL_INTRINSIC_2 1 (INTRINSIC_PREP_RERAISE_STAR)",
self.get_disassembly("try: pass\nexcept* Exception: x"))
def test_big_linenos(self):
def func(count):
namespace = {}
func = "def foo():\n " + "".join(["\n "] * count + ["spam\n"])
exec(func, namespace)
return namespace['foo']
# Test all small ranges
for i in range(1, 300):
expected = _BIG_LINENO_FORMAT % (i + 2)
self.do_disassembly_test(func(i), expected)
# Test some larger ranges too
for i in range(300, 1000, 10):
expected = _BIG_LINENO_FORMAT % (i + 2)
self.do_disassembly_test(func(i), expected)
for i in range(1000, 5000, 10):
expected = _BIG_LINENO_FORMAT2 % (i + 2)
self.do_disassembly_test(func(i), expected)
from test import dis_module
self.do_disassembly_test(dis_module, dis_module_expected_results)
def test_disassemble_str(self):
self.do_disassembly_test(expr_str, dis_expr_str)
self.do_disassembly_test(simple_stmt_str, dis_simple_stmt_str)
self.do_disassembly_test(annot_stmt_str, dis_annot_stmt_str)
self.do_disassembly_test(fn_with_annotate_str, dis_fn_with_annotate_str)
self.do_disassembly_test(compound_stmt_str, dis_compound_stmt_str)
def test_disassemble_bytes(self):
self.do_disassembly_test(_f.__code__.co_code, dis_f_co_code)
def test_disassemble_class(self):
self.do_disassembly_test(_C, dis_c)
def test_disassemble_instance_method(self):
self.do_disassembly_test(_C(1).__init__, dis_c_instance_method)
def test_disassemble_instance_method_bytes(self):
method_bytecode = _C(1).__init__.__code__.co_code
self.do_disassembly_test(method_bytecode, dis_c_instance_method_bytes)
def test_disassemble_static_method(self):
self.do_disassembly_test(_C.sm, dis_c_static_method)
def test_disassemble_class_method(self):
self.do_disassembly_test(_C.cm, dis_c_class_method)
def test_disassemble_generator(self):
gen_func_disas = self.get_disassembly(_g) # Generator function
gen_disas = self.get_disassembly(_g(1)) # Generator iterator
self.assertEqual(gen_disas, gen_func_disas)
def test_disassemble_async_generator(self):
agen_func_disas = self.get_disassembly(_ag) # Async generator function
agen_disas = self.get_disassembly(_ag(1)) # Async generator iterator
self.assertEqual(agen_disas, agen_func_disas)
def test_disassemble_coroutine(self):
coro_func_disas = self.get_disassembly(_co) # Coroutine function
coro = _co(1) # Coroutine object
coro.close() # Avoid a RuntimeWarning (never awaited)
coro_disas = self.get_disassembly(coro)
self.assertEqual(coro_disas, coro_func_disas)
def test_disassemble_fstring(self):
self.do_disassembly_test(_fstring, dis_fstring)
def test_disassemble_with(self):
self.do_disassembly_test(_with, dis_with)
def test_disassemble_asyncwith(self):
self.do_disassembly_test(_asyncwith, dis_asyncwith)
def test_disassemble_try_finally(self):
self.do_disassembly_test(_tryfinally, dis_tryfinally)
self.do_disassembly_test(_tryfinallyconst, dis_tryfinallyconst)
def test_dis_none(self):
try:
del sys.last_exc
except AttributeError:
pass
try:
del sys.last_traceback
except AttributeError:
pass
self.assertRaises(RuntimeError, dis.dis, None)
def test_dis_traceback(self):
self.maxDiff = None
try:
del sys.last_traceback
except AttributeError:
pass
try:
1/0
except Exception as e:
tb = e.__traceback__
sys.last_exc = e
tb_dis = self.get_disassemble_as_string(tb.tb_frame.f_code, tb.tb_lasti)
self.do_disassembly_test(None, tb_dis)
def test_dis_object(self):
self.assertRaises(TypeError, dis.dis, object())
def test_disassemble_recursive(self):
def check(expected, **kwargs):
dis = self.get_disassembly(_h, **kwargs)
dis = self.strip_addresses(dis)
self.assertEqual(dis, expected)
check(dis_nested_0, depth=0)
check(dis_nested_1, depth=1)
check(dis_nested_2, depth=2)
check(dis_nested_2, depth=3)
check(dis_nested_2, depth=None)
check(dis_nested_2)
def test__try_compile_no_context_exc_on_error(self):
# see gh-102114
try:
dis._try_compile(")", "")
except Exception as e:
self.assertIsNone(e.__context__)
@staticmethod
def code_quicken(f, times=ADAPTIVE_WARMUP_DELAY):
for _ in range(times):
f()
@cpython_only
@requires_specialization
def test_super_instructions(self):
self.code_quicken(lambda: load_test(0, 0))
got = self.get_disassembly(load_test, adaptive=True)
self.do_disassembly_compare(got, dis_load_test_quickened_code)
@cpython_only
@requires_specialization
def test_binary_specialize(self):
binary_op_quicken = """\
0 RESUME_CHECK 0
1 LOAD_NAME 0 (a)
LOAD_NAME 1 (b)
%s
RETURN_VALUE
"""
co_int = compile('a + b', "<int>", "eval")
self.code_quicken(lambda: exec(co_int, {}, {'a': 1, 'b': 2}))
got = self.get_disassembly(co_int, adaptive=True)
self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_INT 0 (+)")
co_unicode = compile('a + b', "<unicode>", "eval")
self.code_quicken(lambda: exec(co_unicode, {}, {'a': 'a', 'b': 'b'}))
got = self.get_disassembly(co_unicode, adaptive=True)
self.do_disassembly_compare(got, binary_op_quicken % "BINARY_OP_ADD_UNICODE 0 (+)")
binary_subscr_quicken = """\
0 RESUME_CHECK 0
1 LOAD_NAME 0 (a)
LOAD_CONST 0 (0)
%s
RETURN_VALUE
"""
co_list = compile('a[0]', "<list>", "eval")
self.code_quicken(lambda: exec(co_list, {}, {'a': [0]}))
got = self.get_disassembly(co_list, adaptive=True)
self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_LIST_INT")
co_dict = compile('a[0]', "<dict>", "eval")
self.code_quicken(lambda: exec(co_dict, {}, {'a': {0: '1'}}))
got = self.get_disassembly(co_dict, adaptive=True)
self.do_disassembly_compare(got, binary_subscr_quicken % "BINARY_SUBSCR_DICT")
@cpython_only
@requires_specialization
def test_load_attr_specialize(self):
load_attr_quicken = """\
0 RESUME_CHECK 0
1 LOAD_CONST 0 ('a')
LOAD_ATTR_SLOT 0 (__class__)
RETURN_VALUE
"""
co = compile("'a'.__class__", "", "eval")
self.code_quicken(lambda: exec(co, {}, {}))
got = self.get_disassembly(co, adaptive=True)
self.do_disassembly_compare(got, load_attr_quicken)
@cpython_only
@requires_specialization
def test_call_specialize(self):
call_quicken = """\
0 RESUME_CHECK 0
1 LOAD_NAME 0 (str)
PUSH_NULL
LOAD_CONST 0 (1)
CALL_STR_1 1
RETURN_VALUE
"""
co = compile("str(1)", "", "eval")
self.code_quicken(lambda: exec(co, {}, {}))
got = self.get_disassembly(co, adaptive=True)
self.do_disassembly_compare(got, call_quicken)
@cpython_only
@requires_specialization
def test_loop_quicken(self):
# Loop can trigger a quicken where the loop is located
self.code_quicken(loop_test, 4)
got = self.get_disassembly(loop_test, adaptive=True)
expected = dis_loop_test_quickened_code
self.do_disassembly_compare(got, expected)
@cpython_only
@requires_specialization
def test_loop_with_conditional_at_end_is_quickened(self):
def for_loop_true(x):
for i in range(10):
if x:
pass
for_loop_true(True)
self.assertIn('FOR_ITER_RANGE',
self.get_disassembly(for_loop_true, adaptive=True))
def for_loop_false(x):
for i in range(10):
if x:
pass
for_loop_false(False)
self.assertIn('FOR_ITER_RANGE',
self.get_disassembly(for_loop_false, adaptive=True))
def while_loop():
i = 0
while i < 10:
i += 1
while_loop()
self.assertIn('COMPARE_OP_INT',
self.get_disassembly(while_loop, adaptive=True))
@cpython_only
def test_extended_arg_quick(self):
got = self.get_disassembly(extended_arg_quick)
self.do_disassembly_compare(got, dis_extended_arg_quick_code)
def get_cached_values(self, quickened, adaptive):
def f():
l = []
for i in range(42):
l.append(i)
if quickened:
self.code_quicken(f)
else:
# "copy" the code to un-quicken it:
f.__code__ = f.__code__.replace()
for instruction in _unroll_caches_as_Instructions(dis.get_instructions(
f, show_caches=True, adaptive=adaptive
), show_caches=True):
if instruction.opname == "CACHE":
yield instruction.argrepr
@cpython_only
def test_show_caches(self):
for quickened in (False, True):
for adaptive in (False, True):
with self.subTest(f"{quickened=}, {adaptive=}"):
if adaptive:
pattern = r"^(\w+: \d+)?$"
else:
pattern = r"^(\w+: 0)?$"
caches = list(self.get_cached_values(quickened, adaptive))
for cache in caches:
self.assertRegex(cache, pattern)
total_caches = 21
empty_caches = 7
self.assertEqual(caches.count(""), empty_caches)
self.assertEqual(len(caches), total_caches)
@cpython_only
def test_show_currinstr_with_cache(self):
"""
Make sure that with lasti pointing to CACHE, it still shows the current
line correctly
"""
def f():
print(a)
# The code above should generate a LOAD_GLOBAL which has CACHE instr after
# However, this might change in the future. So we explicitly try to find
# a CACHE entry in the instructions. If we can't do that, fail the test
for inst in _unroll_caches_as_Instructions(
dis.get_instructions(f, show_caches=True), show_caches=True):
if inst.opname == "CACHE":
op_offset = inst.offset - 2
cache_offset = inst.offset
break
else:
opname = inst.opname
else:
self.fail("Can't find a CACHE entry in the function provided to do the test")
assem_op = self.get_disassembly(f.__code__, lasti=op_offset, wrapper=False)
assem_cache = self.get_disassembly(f.__code__, lasti=cache_offset, wrapper=False)
# Make sure --> exists and points to the correct op
self.assertRegex(assem_op, fr"--> {opname}")
# Make sure when lasti points to cache, it shows the same disassembly
self.assertEqual(assem_op, assem_cache)
class DisWithFileTests(DisTests):
# Run the tests again, using the file arg instead of print
def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs):
output = io.StringIO()
if wrapper:
dis.dis(func, file=output, **kwargs)
else:
dis.disassemble(func, lasti, file=output, **kwargs)
return output.getvalue()
if dis.code_info.__doc__ is None:
code_info_consts = "0: None"
else:
code_info_consts = "0: 'Formatted details of methods, functions, or code.'"
code_info_code_info = f"""\
Name: code_info
Filename: (.*)
Argument count: 1
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 1
Stack size: \\d+
Flags: OPTIMIZED, NEWLOCALS
Constants:
{code_info_consts}
Names:
0: _format_code_info
1: _get_code_object
Variable names:
0: x"""
@staticmethod
def tricky(a, b, /, x, y, z=True, *args, c, d, e=[], **kwds):
def f(c=c):
print(a, b, x, y, z, c, d, e, f)
yield a, b, x, y, z, c, d, e, f
code_info_tricky = """\
Name: tricky
Filename: (.*)
Argument count: 5
Positional-only arguments: 2
Kw-only arguments: 3
Number of locals: 10
Stack size: \\d+
Flags: OPTIMIZED, NEWLOCALS, VARARGS, VARKEYWORDS, GENERATOR
Constants:
0: None
1: <code object f at (.*), file "(.*)", line (.*)>
Variable names:
0: a
1: b
2: x
3: y
4: z
5: c
6: d
7: e
8: args
9: kwds
Cell variables:
0: [abedfxyz]
1: [abedfxyz]
2: [abedfxyz]
3: [abedfxyz]
4: [abedfxyz]
5: [abedfxyz]"""
# NOTE: the order of the cell variables above depends on dictionary order!
co_tricky_nested_f = tricky.__func__.__code__.co_consts[1]
code_info_tricky_nested_f = """\
Filename: (.*)
Argument count: 1
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 1
Stack size: \\d+
Flags: OPTIMIZED, NEWLOCALS, NESTED
Constants:
0: None
Names:
0: print
Variable names:
0: c
Free variables:
0: [abedfxyz]
1: [abedfxyz]
2: [abedfxyz]
3: [abedfxyz]
4: [abedfxyz]
5: [abedfxyz]"""
code_info_expr_str = """\
Name: <module>
Filename: <disassembly>
Argument count: 0
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 0
Stack size: \\d+
Flags: 0x0
Constants:
0: 1
Names:
0: x"""
code_info_simple_stmt_str = """\
Name: <module>
Filename: <disassembly>
Argument count: 0
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 0
Stack size: \\d+
Flags: 0x0
Constants:
0: 1
1: None
Names:
0: x"""
code_info_compound_stmt_str = """\
Name: <module>
Filename: <disassembly>
Argument count: 0
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 0
Stack size: \\d+
Flags: 0x0
Constants:
0: 0
1: 1
Names:
0: x"""
async def async_def():
await 1
async for a in b: pass
async with c as d: pass
code_info_async_def = """\
Name: async_def
Filename: (.*)
Argument count: 0
Positional-only arguments: 0
Kw-only arguments: 0
Number of locals: 2
Stack size: \\d+
Flags: OPTIMIZED, NEWLOCALS, COROUTINE
Constants:
0: None
1: 1
Names:
0: b
1: c
Variable names:
0: a
1: d"""
class CodeInfoTests(unittest.TestCase):
test_pairs = [
(dis.code_info, code_info_code_info),
(tricky, code_info_tricky),
(co_tricky_nested_f, code_info_tricky_nested_f),
(expr_str, code_info_expr_str),
(simple_stmt_str, code_info_simple_stmt_str),
(compound_stmt_str, code_info_compound_stmt_str),
(async_def, code_info_async_def)
]
def test_code_info(self):
self.maxDiff = 1000
for x, expected in self.test_pairs:
self.assertRegex(dis.code_info(x), expected)
def test_show_code(self):
self.maxDiff = 1000
for x, expected in self.test_pairs:
with captured_stdout() as output:
dis.show_code(x)
self.assertRegex(output.getvalue(), expected+"\n")
output = io.StringIO()
dis.show_code(x, file=output)
self.assertRegex(output.getvalue(), expected)
def test_code_info_object(self):
self.assertRaises(TypeError, dis.code_info, object())
def test_pretty_flags_no_flags(self):
self.assertEqual(dis.pretty_flags(0), '0x0')
# Fodder for instruction introspection tests
# Editing any of these may require recalculating the expected output
def outer(a=1, b=2):
def f(c=3, d=4):
def inner(e=5, f=6):
print(a, b, c, d, e, f)
print(a, b, c, d)
return inner
print(a, b, '', 1, [], {}, "Hello world!")
return f
def jumpy():
# This won't actually run (but that's OK, we only disassemble it)
for i in range(10):
print(i)
if i < 4:
continue
if i > 6:
break
else:
print("I can haz else clause?")
while i:
print(i)
i -= 1
if i > 6:
continue
if i < 4:
break
else:
print("Who let lolcatz into this test suite?")
try:
1 / 0
except ZeroDivisionError:
print("Here we go, here we go, here we go...")
else:
with i as dodgy:
print("Never reach this")
finally:
print("OK, now we're done")
# End fodder for opinfo generation tests
expected_outer_line = 1
_line_offset = outer.__code__.co_firstlineno - 1
code_object_f = outer.__code__.co_consts[1]
expected_f_line = code_object_f.co_firstlineno - _line_offset
code_object_inner = code_object_f.co_consts[1]
expected_inner_line = code_object_inner.co_firstlineno - _line_offset
expected_jumpy_line = 1
# The following lines are useful to regenerate the expected results after
# either the fodder is modified or the bytecode generation changes
# After regeneration, update the references to code_object_f and
# code_object_inner before rerunning the tests
def _stringify_instruction(instr):
# Since line numbers and other offsets change a lot for these
# test cases, ignore them.
return f" {instr._replace(positions=None)!r},"
def _prepare_test_cases():
ignore = io.StringIO()
with contextlib.redirect_stdout(ignore):
f = outer()
inner = f()
_instructions_outer = dis.get_instructions(outer, first_line=expected_outer_line)
_instructions_f = dis.get_instructions(f, first_line=expected_f_line)
_instructions_inner = dis.get_instructions(inner, first_line=expected_inner_line)
_instructions_jumpy = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
result = "\n".join(
[
"expected_opinfo_outer = [",
*map(_stringify_instruction, _instructions_outer),
"]",
"",
"expected_opinfo_f = [",
*map(_stringify_instruction, _instructions_f),
"]",
"",
"expected_opinfo_inner = [",
*map(_stringify_instruction, _instructions_inner),
"]",
"",
"expected_opinfo_jumpy = [",
*map(_stringify_instruction, _instructions_jumpy),
"]",
]
)
result = result.replace(repr(repr(code_object_f)), "repr(code_object_f)")
result = result.replace(repr(code_object_f), "code_object_f")
result = result.replace(repr(repr(code_object_inner)), "repr(code_object_inner)")
result = result.replace(repr(code_object_inner), "code_object_inner")
print(result)
# from test.test_dis import _prepare_test_cases; _prepare_test_cases()
Instruction = dis.Instruction
expected_opinfo_outer = [
Instruction(opname='MAKE_CELL', opcode=91, arg=0, argval='a', argrepr='a', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='MAKE_CELL', opcode=91, arg=1, argval='b', argrepr='b', offset=2, start_offset=2, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=4, start_offset=4, starts_line=True, line_number=1, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=5, argval=(3, 4), argrepr='(3, 4)', offset=6, start_offset=6, starts_line=True, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='a', argrepr='a', offset=8, start_offset=8, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=1, argval='b', argrepr='b', offset=10, start_offset=10, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='BUILD_TUPLE', opcode=48, arg=2, argval=2, argrepr='', offset=12, start_offset=12, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=1, argval=code_object_f, argrepr=repr(code_object_f), offset=14, start_offset=14, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='MAKE_FUNCTION', opcode=23, arg=None, argval=None, argrepr='', offset=16, start_offset=16, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=103, arg=8, argval=8, argrepr='closure', offset=18, start_offset=18, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=103, arg=1, argval=1, argrepr='defaults', offset=20, start_offset=20, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='STORE_FAST', opcode=107, arg=2, argval='f', argrepr='f', offset=22, start_offset=22, starts_line=False, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=1, argval='print', argrepr='print + NULL', offset=24, start_offset=24, starts_line=True, line_number=7, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_DEREF', opcode=80, arg=0, argval='a', argrepr='a', offset=34, start_offset=34, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=1, argval='b', argrepr='b', offset=36, start_offset=36, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=2, argval='', argrepr="''", offset=38, start_offset=38, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=3, argval=1, argrepr='1', offset=40, start_offset=40, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='BUILD_LIST', opcode=43, arg=0, argval=0, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='BUILD_MAP', opcode=44, arg=0, argval=0, argrepr='', offset=44, start_offset=44, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=4, argval='Hello world!', argrepr="'Hello world!'", offset=46, start_offset=46, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=7, argval=7, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=7, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=2, argval='f', argrepr='f', offset=58, start_offset=58, starts_line=True, line_number=8, label=None, positions=None, cache_info=None),
Instruction(opname='RETURN_VALUE', opcode=33, arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=8, label=None, positions=None, cache_info=None),
]
expected_opinfo_f = [
Instruction(opname='COPY_FREE_VARS', opcode=58, arg=2, argval=2, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='MAKE_CELL', opcode=91, arg=0, argval='c', argrepr='c', offset=2, start_offset=2, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='MAKE_CELL', opcode=91, arg=1, argval='d', argrepr='d', offset=4, start_offset=4, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=6, start_offset=6, starts_line=True, line_number=2, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=2, argval=(5, 6), argrepr='(5, 6)', offset=8, start_offset=8, starts_line=True, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=3, argval='a', argrepr='a', offset=10, start_offset=10, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=4, argval='b', argrepr='b', offset=12, start_offset=12, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='c', argrepr='c', offset=14, start_offset=14, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=1, argval='d', argrepr='d', offset=16, start_offset=16, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='BUILD_TUPLE', opcode=48, arg=4, argval=4, argrepr='', offset=18, start_offset=18, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=1, argval=code_object_inner, argrepr=repr(code_object_inner), offset=20, start_offset=20, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='MAKE_FUNCTION', opcode=23, arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=103, arg=8, argval=8, argrepr='closure', offset=24, start_offset=24, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='SET_FUNCTION_ATTRIBUTE', opcode=103, arg=1, argval=1, argrepr='defaults', offset=26, start_offset=26, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='STORE_FAST', opcode=107, arg=2, argval='inner', argrepr='inner', offset=28, start_offset=28, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=1, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=5, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_DEREF', opcode=80, arg=3, argval='a', argrepr='a', offset=40, start_offset=40, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=4, argval='b', argrepr='b', offset=42, start_offset=42, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=0, argval='c', argrepr='c', offset=44, start_offset=44, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=1, argval='d', argrepr='d', offset=46, start_offset=46, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=4, argval=4, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=5, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=2, argval='inner', argrepr='inner', offset=58, start_offset=58, starts_line=True, line_number=6, label=None, positions=None, cache_info=None),
Instruction(opname='RETURN_VALUE', opcode=33, arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=6, label=None, positions=None, cache_info=None),
]
expected_opinfo_inner = [
Instruction(opname='COPY_FREE_VARS', opcode=58, arg=4, argval=4, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=2, start_offset=2, starts_line=True, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=1, argval='print', argrepr='print + NULL', offset=4, start_offset=4, starts_line=True, line_number=4, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_DEREF', opcode=80, arg=2, argval='a', argrepr='a', offset=14, start_offset=14, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=3, argval='b', argrepr='b', offset=16, start_offset=16, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=4, argval='c', argrepr='c', offset=18, start_offset=18, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_DEREF', opcode=80, arg=5, argval='d', argrepr='d', offset=20, start_offset=20, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST_LOAD_FAST', opcode=84, arg=1, argval=('e', 'f'), argrepr='e, f', offset=22, start_offset=22, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=6, argval=6, argrepr='', offset=24, start_offset=24, starts_line=False, line_number=4, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=32, start_offset=32, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='RETURN_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=34, start_offset=34, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
]
expected_opinfo_jumpy = [
Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=1, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=1, argval='range', argrepr='range + NULL', offset=2, start_offset=2, starts_line=True, line_number=3, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=1, argval=10, argrepr='10', offset=12, start_offset=12, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=14, start_offset=14, starts_line=False, line_number=3, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='GET_ITER', opcode=16, arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='FOR_ITER', opcode=67, arg=30, argval=88, argrepr='to L4', offset=24, start_offset=24, starts_line=False, line_number=3, label=1, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='STORE_FAST', opcode=107, arg=0, argval='i', argrepr='i', offset=28, start_offset=28, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=4, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=40, start_offset=40, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=4, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=50, start_offset=50, starts_line=False, line_number=4, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=52, start_offset=52, starts_line=True, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=2, argval=4, argrepr='4', offset=54, start_offset=54, starts_line=False, line_number=5, label=None, positions=None, cache_info=None),
Instruction(opname='COMPARE_OP', opcode=54, arg=18, argval='<', argrepr='bool(<)', offset=56, start_offset=56, starts_line=False, line_number=5, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_JUMP_IF_FALSE', opcode=94, arg=2, argval=68, argrepr='to L2', offset=60, start_offset=60, starts_line=False, line_number=5, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='JUMP_BACKWARD', opcode=72, arg=22, argval=24, argrepr='to L1', offset=64, start_offset=64, starts_line=True, line_number=6, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=68, start_offset=68, starts_line=True, line_number=7, label=2, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=3, argval=6, argrepr='6', offset=70, start_offset=70, starts_line=False, line_number=7, label=None, positions=None, cache_info=None),
Instruction(opname='COMPARE_OP', opcode=54, arg=148, argval='>', argrepr='bool(>)', offset=72, start_offset=72, starts_line=False, line_number=7, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_JUMP_IF_TRUE', opcode=97, arg=2, argval=84, argrepr='to L3', offset=76, start_offset=76, starts_line=False, line_number=7, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='JUMP_BACKWARD', opcode=72, arg=30, argval=24, argrepr='to L1', offset=80, start_offset=80, starts_line=False, line_number=7, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=84, start_offset=84, starts_line=True, line_number=8, label=3, positions=None, cache_info=None),
Instruction(opname='JUMP_FORWARD', opcode=74, arg=13, argval=114, argrepr='to L5', offset=86, start_offset=86, starts_line=False, line_number=8, label=None, positions=None, cache_info=None),
Instruction(opname='END_FOR', opcode=9, arg=None, argval=None, argrepr='', offset=88, start_offset=88, starts_line=True, line_number=3, label=4, positions=None, cache_info=None),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=90, start_offset=90, starts_line=False, line_number=3, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=92, start_offset=92, starts_line=True, line_number=10, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=102, start_offset=102, starts_line=False, line_number=10, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=104, start_offset=104, starts_line=False, line_number=10, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=112, start_offset=112, starts_line=False, line_number=10, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST_CHECK', opcode=83, arg=0, argval='i', argrepr='i', offset=114, start_offset=114, starts_line=True, line_number=11, label=5, positions=None, cache_info=None),
Instruction(opname='TO_BOOL', opcode=37, arg=None, argval=None, argrepr='', offset=116, start_offset=116, starts_line=False, line_number=11, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_JUMP_IF_FALSE', opcode=94, arg=33, argval=194, argrepr='to L8', offset=124, start_offset=124, starts_line=False, line_number=11, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=128, start_offset=128, starts_line=True, line_number=12, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=138, start_offset=138, starts_line=False, line_number=12, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=140, start_offset=140, starts_line=False, line_number=12, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=148, start_offset=148, starts_line=False, line_number=12, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=150, start_offset=150, starts_line=True, line_number=13, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=5, argval=1, argrepr='1', offset=152, start_offset=152, starts_line=False, line_number=13, label=None, positions=None, cache_info=None),
Instruction(opname='BINARY_OP', opcode=42, arg=23, argval=23, argrepr='-=', offset=154, start_offset=154, starts_line=False, line_number=13, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='STORE_FAST', opcode=107, arg=0, argval='i', argrepr='i', offset=158, start_offset=158, starts_line=False, line_number=13, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=160, start_offset=160, starts_line=True, line_number=14, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=3, argval=6, argrepr='6', offset=162, start_offset=162, starts_line=False, line_number=14, label=None, positions=None, cache_info=None),
Instruction(opname='COMPARE_OP', opcode=54, arg=148, argval='>', argrepr='bool(>)', offset=164, start_offset=164, starts_line=False, line_number=14, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_JUMP_IF_FALSE', opcode=94, arg=2, argval=176, argrepr='to L6', offset=168, start_offset=168, starts_line=False, line_number=14, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='JUMP_BACKWARD', opcode=72, arg=31, argval=114, argrepr='to L5', offset=172, start_offset=172, starts_line=True, line_number=15, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=176, start_offset=176, starts_line=True, line_number=16, label=6, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=2, argval=4, argrepr='4', offset=178, start_offset=178, starts_line=False, line_number=16, label=None, positions=None, cache_info=None),
Instruction(opname='COMPARE_OP', opcode=54, arg=18, argval='<', argrepr='bool(<)', offset=180, start_offset=180, starts_line=False, line_number=16, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_JUMP_IF_TRUE', opcode=97, arg=2, argval=192, argrepr='to L7', offset=184, start_offset=184, starts_line=False, line_number=16, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='JUMP_BACKWARD', opcode=72, arg=39, argval=114, argrepr='to L5', offset=188, start_offset=188, starts_line=False, line_number=16, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='JUMP_FORWARD', opcode=74, arg=11, argval=216, argrepr='to L9', offset=192, start_offset=192, starts_line=True, line_number=17, label=7, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=194, start_offset=194, starts_line=True, line_number=19, label=8, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=204, start_offset=204, starts_line=False, line_number=19, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=206, start_offset=206, starts_line=False, line_number=19, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=214, start_offset=214, starts_line=False, line_number=19, label=None, positions=None, cache_info=None),
Instruction(opname='NOP', opcode=27, arg=None, argval=None, argrepr='', offset=216, start_offset=216, starts_line=True, line_number=20, label=9, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=5, argval=1, argrepr='1', offset=218, start_offset=218, starts_line=True, line_number=21, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=7, argval=0, argrepr='0', offset=220, start_offset=220, starts_line=False, line_number=21, label=None, positions=None, cache_info=None),
Instruction(opname='BINARY_OP', opcode=42, arg=11, argval=11, argrepr='/', offset=222, start_offset=222, starts_line=False, line_number=21, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=226, start_offset=226, starts_line=False, line_number=21, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_FAST', opcode=81, arg=0, argval='i', argrepr='i', offset=228, start_offset=228, starts_line=True, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='COPY', opcode=57, arg=1, argval=1, argrepr='', offset=230, start_offset=230, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_SPECIAL', opcode=89, arg=1, argval=1, argrepr='__exit__', offset=232, start_offset=232, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='SWAP', opcode=112, arg=2, argval=2, argrepr='', offset=234, start_offset=234, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='SWAP', opcode=112, arg=3, argval=3, argrepr='', offset=236, start_offset=236, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_SPECIAL', opcode=89, arg=0, argval=0, argrepr='__enter__', offset=238, start_offset=238, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=0, argval=0, argrepr='', offset=240, start_offset=240, starts_line=False, line_number=25, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='STORE_FAST', opcode=107, arg=1, argval='dodgy', argrepr='dodgy', offset=248, start_offset=248, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=250, start_offset=250, starts_line=True, line_number=26, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=8, argval='Never reach this', argrepr="'Never reach this'", offset=260, start_offset=260, starts_line=False, line_number=26, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=262, start_offset=262, starts_line=False, line_number=26, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=270, start_offset=270, starts_line=False, line_number=26, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=0, argval=None, argrepr='None', offset=272, start_offset=272, starts_line=True, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=0, argval=None, argrepr='None', offset=274, start_offset=274, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_CONST', opcode=79, arg=0, argval=None, argrepr='None', offset=276, start_offset=276, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=3, argval=3, argrepr='', offset=278, start_offset=278, starts_line=False, line_number=25, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=286, start_offset=286, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=288, start_offset=288, starts_line=True, line_number=28, label=10, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=298, start_offset=298, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=300, start_offset=300, starts_line=False, line_number=28, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=308, start_offset=308, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='RETURN_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=310, start_offset=310, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='PUSH_EXC_INFO', opcode=30, arg=None, argval=None, argrepr='', offset=312, start_offset=312, starts_line=True, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='WITH_EXCEPT_START', opcode=41, arg=None, argval=None, argrepr='', offset=314, start_offset=314, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='TO_BOOL', opcode=37, arg=None, argval=None, argrepr='', offset=316, start_offset=316, starts_line=False, line_number=25, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_JUMP_IF_TRUE', opcode=97, arg=1, argval=330, argrepr='to L11', offset=324, start_offset=324, starts_line=False, line_number=25, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='RERAISE', opcode=99, arg=2, argval=2, argrepr='', offset=328, start_offset=328, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=330, start_offset=330, starts_line=False, line_number=25, label=11, positions=None, cache_info=None),
Instruction(opname='POP_EXCEPT', opcode=28, arg=None, argval=None, argrepr='', offset=332, start_offset=332, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=334, start_offset=334, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=336, start_offset=336, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=338, start_offset=338, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='JUMP_BACKWARD_NO_INTERRUPT', opcode=73, arg=27, argval=288, argrepr='to L10', offset=340, start_offset=340, starts_line=False, line_number=25, label=None, positions=None, cache_info=None),
Instruction(opname='COPY', opcode=57, arg=3, argval=3, argrepr='', offset=342, start_offset=342, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='POP_EXCEPT', opcode=28, arg=None, argval=None, argrepr='', offset=344, start_offset=344, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RERAISE', opcode=99, arg=1, argval=1, argrepr='', offset=346, start_offset=346, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='PUSH_EXC_INFO', opcode=30, arg=None, argval=None, argrepr='', offset=348, start_offset=348, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=4, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=350, start_offset=350, starts_line=True, line_number=22, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='CHECK_EXC_MATCH', opcode=5, arg=None, argval=None, argrepr='', offset=360, start_offset=360, starts_line=False, line_number=22, label=None, positions=None, cache_info=None),
Instruction(opname='POP_JUMP_IF_FALSE', opcode=94, arg=14, argval=394, argrepr='to L12', offset=362, start_offset=362, starts_line=False, line_number=22, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=366, start_offset=366, starts_line=False, line_number=22, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=368, start_offset=368, starts_line=True, line_number=23, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=9, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=378, start_offset=378, starts_line=False, line_number=23, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=380, start_offset=380, starts_line=False, line_number=23, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=388, start_offset=388, starts_line=False, line_number=23, label=None, positions=None, cache_info=None),
Instruction(opname='POP_EXCEPT', opcode=28, arg=None, argval=None, argrepr='', offset=390, start_offset=390, starts_line=False, line_number=23, label=None, positions=None, cache_info=None),
Instruction(opname='JUMP_BACKWARD_NO_INTERRUPT', opcode=73, arg=53, argval=288, argrepr='to L10', offset=392, start_offset=392, starts_line=False, line_number=23, label=None, positions=None, cache_info=None),
Instruction(opname='RERAISE', opcode=99, arg=0, argval=0, argrepr='', offset=394, start_offset=394, starts_line=True, line_number=22, label=12, positions=None, cache_info=None),
Instruction(opname='COPY', opcode=57, arg=3, argval=3, argrepr='', offset=396, start_offset=396, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='POP_EXCEPT', opcode=28, arg=None, argval=None, argrepr='', offset=398, start_offset=398, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RERAISE', opcode=99, arg=1, argval=1, argrepr='', offset=400, start_offset=400, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='PUSH_EXC_INFO', opcode=30, arg=None, argval=None, argrepr='', offset=402, start_offset=402, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='LOAD_GLOBAL', opcode=87, arg=3, argval='print', argrepr='print + NULL', offset=404, start_offset=404, starts_line=True, line_number=28, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]),
Instruction(opname='LOAD_CONST', opcode=79, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=414, start_offset=414, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='CALL', opcode=49, arg=1, argval=1, argrepr='', offset=416, start_offset=416, starts_line=False, line_number=28, label=None, positions=None, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]),
Instruction(opname='POP_TOP', opcode=29, arg=None, argval=None, argrepr='', offset=424, start_offset=424, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='RERAISE', opcode=99, arg=0, argval=0, argrepr='', offset=426, start_offset=426, starts_line=False, line_number=28, label=None, positions=None, cache_info=None),
Instruction(opname='COPY', opcode=57, arg=3, argval=3, argrepr='', offset=428, start_offset=428, starts_line=True, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='POP_EXCEPT', opcode=28, arg=None, argval=None, argrepr='', offset=430, start_offset=430, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
Instruction(opname='RERAISE', opcode=99, arg=1, argval=1, argrepr='', offset=432, start_offset=432, starts_line=False, line_number=None, label=None, positions=None, cache_info=None),
]
# One last piece of inspect fodder to check the default line number handling
def simple(): pass
expected_opinfo_simple = [
Instruction(opname='RESUME', opcode=149, arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=simple.__code__.co_firstlineno, label=None, positions=None),
Instruction(opname='RETURN_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=2, start_offset=2, starts_line=False, line_number=simple.__code__.co_firstlineno, label=None),
]
class InstructionTestCase(BytecodeTestCase):
def assertInstructionsEqual(self, instrs_1, instrs_2, /):
instrs_1 = [instr_1._replace(positions=None, cache_info=None) for instr_1 in instrs_1]
instrs_2 = [instr_2._replace(positions=None, cache_info=None) for instr_2 in instrs_2]
self.assertEqual(instrs_1, instrs_2)
class InstructionTests(InstructionTestCase):
def __init__(self, *args):
super().__init__(*args)
self.maxDiff = None
def test_instruction_str(self):
# smoke test for __str__
instrs = dis.get_instructions(simple)
for instr in instrs:
str(instr)
def test_default_first_line(self):
actual = dis.get_instructions(simple)
self.assertInstructionsEqual(list(actual), expected_opinfo_simple)
def test_first_line_set_to_None(self):
actual = dis.get_instructions(simple, first_line=None)
self.assertInstructionsEqual(list(actual), expected_opinfo_simple)
def test_outer(self):
actual = dis.get_instructions(outer, first_line=expected_outer_line)
self.assertInstructionsEqual(list(actual), expected_opinfo_outer)
def test_nested(self):
with captured_stdout():
f = outer()
actual = dis.get_instructions(f, first_line=expected_f_line)
self.assertInstructionsEqual(list(actual), expected_opinfo_f)
def test_doubly_nested(self):
with captured_stdout():
inner = outer()()
actual = dis.get_instructions(inner, first_line=expected_inner_line)
self.assertInstructionsEqual(list(actual), expected_opinfo_inner)
def test_jumpy(self):
actual = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
self.assertInstructionsEqual(list(actual), expected_opinfo_jumpy)
@requires_debug_ranges()
def test_co_positions(self):
code = compile('f(\n x, y, z\n)', '<test>', 'exec')
positions = [
instr.positions
for instr in dis.get_instructions(code)
]
expected = [
(0, 1, 0, 0),
(1, 1, 0, 1),
(1, 1, 0, 1),
(2, 2, 2, 3),
(2, 2, 5, 6),
(2, 2, 8, 9),
(1, 3, 0, 1),
(1, 3, 0, 1),
(1, 3, 0, 1)
]
self.assertEqual(positions, expected)
named_positions = [
(pos.lineno, pos.end_lineno, pos.col_offset, pos.end_col_offset)
for pos in positions
]
self.assertEqual(named_positions, expected)
@requires_debug_ranges()
def test_co_positions_missing_info(self):
code = compile('x, y, z', '<test>', 'exec')
code_without_location_table = code.replace(co_linetable=b'')
actual = dis.get_instructions(code_without_location_table)
for instruction in actual:
with self.subTest(instruction=instruction):
positions = instruction.positions
self.assertEqual(len(positions), 4)
if instruction.opname == "RESUME":
continue
self.assertIsNone(positions.lineno)
self.assertIsNone(positions.end_lineno)
self.assertIsNone(positions.col_offset)
self.assertIsNone(positions.end_col_offset)
@requires_debug_ranges()
def test_co_positions_with_lots_of_caches(self):
def roots(a, b, c):
d = b**2 - 4 * a * c
yield (-b - cmath.sqrt(d)) / (2 * a)
if d:
yield (-b + cmath.sqrt(d)) / (2 * a)
code = roots.__code__
ops = code.co_code[::2]
cache_opcode = opcode.opmap["CACHE"]
caches = sum(op == cache_opcode for op in ops)
non_caches = len(ops) - caches
# Make sure we have "lots of caches". If not, roots should be changed:
assert 1 / 3 <= caches / non_caches, "this test needs more caches!"
for show_caches in (False, True):
for adaptive in (False, True):
with self.subTest(f"{adaptive=}, {show_caches=}"):
co_positions = [
positions
for op, positions in zip(ops, code.co_positions(), strict=True)
if show_caches or op != cache_opcode
]
dis_positions = [
None if instruction.positions is None else (
instruction.positions.lineno,
instruction.positions.end_lineno,
instruction.positions.col_offset,
instruction.positions.end_col_offset,
)
for instruction in _unroll_caches_as_Instructions(dis.get_instructions(
code, adaptive=adaptive, show_caches=show_caches
), show_caches=show_caches)
]
self.assertEqual(co_positions, dis_positions)
def test_oparg_alias(self):
instruction = Instruction(opname="NOP", opcode=dis.opmap["NOP"], arg=None, argval=None,
argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
positions=None)
self.assertEqual(instruction.arg, instruction.oparg)
def test_show_caches_with_label(self):
def f(x, y, z):
if x:
res = y
else:
res = z
return res
output = io.StringIO()
dis.dis(f.__code__, file=output, show_caches=True)
self.assertIn("L1:", output.getvalue())
def test_is_op_format(self):
output = io.StringIO()
dis.dis("a is b", file=output, show_caches=True)
self.assertIn("IS_OP 0 (is)", output.getvalue())
output = io.StringIO()
dis.dis("a is not b", file=output, show_caches=True)
self.assertIn("IS_OP 1 (is not)", output.getvalue())
def test_contains_op_format(self):
output = io.StringIO()
dis.dis("a in b", file=output, show_caches=True)
self.assertIn("CONTAINS_OP 0 (in)", output.getvalue())
output = io.StringIO()
dis.dis("a not in b", file=output, show_caches=True)
self.assertIn("CONTAINS_OP 1 (not in)", output.getvalue())
def test_baseopname_and_baseopcode(self):
# Standard instructions
for name, code in dis.opmap.items():
instruction = Instruction(opname=name, opcode=code, arg=None, argval=None, argrepr='', offset=0,
start_offset=0, starts_line=True, line_number=1, label=None, positions=None)
baseopname = instruction.baseopname
baseopcode = instruction.baseopcode
self.assertIsNotNone(baseopname)
self.assertIsNotNone(baseopcode)
self.assertEqual(name, baseopname)
self.assertEqual(code, baseopcode)
# Specialized instructions
for name in opcode._specialized_opmap:
instruction = Instruction(opname=name, opcode=dis._all_opmap[name], arg=None, argval=None, argrepr='',
offset=0, start_offset=0, starts_line=True, line_number=1, label=None, positions=None)
baseopname = instruction.baseopname
baseopcode = instruction.baseopcode
self.assertIn(name, opcode._specializations[baseopname])
self.assertEqual(opcode.opmap[baseopname], baseopcode)
def test_jump_target(self):
# Non-jump instructions should return None
instruction = Instruction(opname="NOP", opcode=dis.opmap["NOP"], arg=None, argval=None,
argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
positions=None)
self.assertIsNone(instruction.jump_target)
delta = 100
instruction = Instruction(opname="JUMP_FORWARD", opcode=dis.opmap["JUMP_FORWARD"], arg=delta, argval=delta,
argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
positions=None)
self.assertEqual(10 + 2 + 100*2, instruction.jump_target)
# Test negative deltas
instruction = Instruction(opname="JUMP_BACKWARD", opcode=dis.opmap["JUMP_BACKWARD"], arg=delta, argval=delta,
argrepr='', offset=200, start_offset=200, starts_line=True, line_number=1, label=None,
positions=None)
self.assertEqual(200 + 2 - 100*2 + 2*1, instruction.jump_target)
# Make sure cache entries are handled
instruction = Instruction(opname="SEND", opcode=dis.opmap["SEND"], arg=delta, argval=delta,
argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None,
positions=None)
self.assertEqual(10 + 2 + 1*2 + 100*2, instruction.jump_target)
def test_argval_argrepr(self):
def f(opcode, oparg, offset, *init_args):
arg_resolver = dis.ArgResolver(*init_args)
return arg_resolver.get_argval_argrepr(opcode, oparg, offset)
offset = 42
co_consts = (0, 1, 2, 3)
names = {1: 'a', 2: 'b'}
varname_from_oparg = lambda i : names[i]
labels_map = {24: 1}
args = (offset, co_consts, names, varname_from_oparg, labels_map)
self.assertEqual(f(opcode.opmap["POP_TOP"], None, *args), (None, ''))
self.assertEqual(f(opcode.opmap["LOAD_CONST"], 1, *args), (1, '1'))
self.assertEqual(f(opcode.opmap["LOAD_GLOBAL"], 2, *args), ('a', 'a'))
self.assertEqual(f(opcode.opmap["JUMP_BACKWARD"], 11, *args), (24, 'to L1'))
self.assertEqual(f(opcode.opmap["COMPARE_OP"], 3, *args), ('<', '<'))
self.assertEqual(f(opcode.opmap["SET_FUNCTION_ATTRIBUTE"], 2, *args), (2, 'kwdefaults'))
self.assertEqual(f(opcode.opmap["BINARY_OP"], 3, *args), (3, '<<'))
self.assertEqual(f(opcode.opmap["CALL_INTRINSIC_1"], 2, *args), (2, 'INTRINSIC_IMPORT_STAR'))
def test_custom_arg_resolver(self):
class MyArgResolver(dis.ArgResolver):
def offset_from_jump_arg(self, op, arg, offset):
return arg + 1
def get_label_for_offset(self, offset):
return 2 * offset
def f(opcode, oparg, offset, *init_args):
arg_resolver = MyArgResolver(*init_args)
return arg_resolver.get_argval_argrepr(opcode, oparg, offset)
offset = 42
self.assertEqual(f(opcode.opmap["JUMP_BACKWARD"], 1, offset), (2, 'to L4'))
self.assertEqual(f(opcode.opmap["SETUP_FINALLY"], 2, offset), (3, 'to L6'))
def get_instructions(self, code):
return dis._get_instructions_bytes(code)
def test_start_offset(self):
# When no extended args are present,
# start_offset should be equal to offset
instructions = list(dis.Bytecode(_f))
for instruction in instructions:
self.assertEqual(instruction.offset, instruction.start_offset)
def last_item(iterable):
return functools.reduce(lambda a, b : b, iterable)
code = bytes([
opcode.opmap["LOAD_FAST"], 0x00,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
])
labels_map = dis._make_labels_map(code)
jump = last_item(self.get_instructions(code))
self.assertEqual(4, jump.offset)
self.assertEqual(2, jump.start_offset)
code = bytes([
opcode.opmap["LOAD_FAST"], 0x00,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
opcode.opmap["CACHE"], 0x00,
])
jump = last_item(self.get_instructions(code))
self.assertEqual(8, jump.offset)
self.assertEqual(2, jump.start_offset)
code = bytes([
opcode.opmap["LOAD_FAST"], 0x00,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["EXTENDED_ARG"], 0x01,
opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF,
opcode.opmap["CACHE"], 0x00,
])
instructions = list(self.get_instructions(code))
# 1st jump
self.assertEqual(4, instructions[2].offset)
self.assertEqual(2, instructions[2].start_offset)
# 2nd jump
self.assertEqual(14, instructions[6].offset)
self.assertEqual(8, instructions[6].start_offset)
def test_cache_offset_and_end_offset(self):
code = bytes([
opcode.opmap["LOAD_GLOBAL"], 0x01,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["LOAD_FAST"], 0x00,
opcode.opmap["CALL"], 0x01,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["CACHE"], 0x00,
opcode.opmap["CACHE"], 0x00
])
instructions = list(self.get_instructions(code))
self.assertEqual(2, instructions[0].cache_offset)
self.assertEqual(10, instructions[0].end_offset)
self.assertEqual(12, instructions[1].cache_offset)
self.assertEqual(12, instructions[1].end_offset)
self.assertEqual(14, instructions[2].cache_offset)
self.assertEqual(20, instructions[2].end_offset)
# end_offset of the previous instruction should be equal to the
# start_offset of the following instruction
instructions = list(dis.Bytecode(self.test_cache_offset_and_end_offset))
for prev, curr in zip(instructions, instructions[1:]):
self.assertEqual(prev.end_offset, curr.start_offset)
# get_instructions has its own tests above, so can rely on it to validate
# the object oriented API
class BytecodeTests(InstructionTestCase, DisTestBase):
def test_instantiation(self):
# Test with function, method, code string and code object
for obj in [_f, _C(1).__init__, "a=1", _f.__code__]:
with self.subTest(obj=obj):
b = dis.Bytecode(obj)
self.assertIsInstance(b.codeobj, types.CodeType)
self.assertRaises(TypeError, dis.Bytecode, object())
def test_iteration(self):
for obj in [_f, _C(1).__init__, "a=1", _f.__code__]:
with self.subTest(obj=obj):
via_object = list(dis.Bytecode(obj))
via_generator = list(dis.get_instructions(obj))
self.assertInstructionsEqual(via_object, via_generator)
def test_explicit_first_line(self):
actual = dis.Bytecode(outer, first_line=expected_outer_line)
self.assertInstructionsEqual(list(actual), expected_opinfo_outer)
def test_source_line_in_disassembly(self):
# Use the line in the source code
actual = dis.Bytecode(simple).dis()
actual = actual.strip().partition(" ")[0] # extract the line no
expected = str(simple.__code__.co_firstlineno)
self.assertEqual(actual, expected)
# Use an explicit first line number
actual = dis.Bytecode(simple, first_line=350).dis()
actual = actual.strip().partition(" ")[0] # extract the line no
self.assertEqual(actual, "350")
def test_info(self):
self.maxDiff = 1000
for x, expected in CodeInfoTests.test_pairs:
b = dis.Bytecode(x)
self.assertRegex(b.info(), expected)
def test_disassembled(self):
actual = dis.Bytecode(_f).dis()
self.do_disassembly_compare(actual, dis_f)
def test_from_traceback(self):
tb = get_tb()
b = dis.Bytecode.from_traceback(tb)
while tb.tb_next: tb = tb.tb_next
self.assertEqual(b.current_offset, tb.tb_lasti)
def test_from_traceback_dis(self):
self.maxDiff = None
tb = get_tb()
b = dis.Bytecode.from_traceback(tb)
self.assertEqual(b.dis(), dis_traceback)
@requires_debug_ranges()
def test_bytecode_co_positions(self):
bytecode = dis.Bytecode("a=1")
for instr, positions in zip(bytecode, bytecode.codeobj.co_positions()):
assert instr.positions == positions
class TestBytecodeTestCase(BytecodeTestCase):
def test_assert_not_in_with_op_not_in_bytecode(self):
code = compile("a = 1", "<string>", "exec")
self.assertInBytecode(code, "LOAD_CONST", 1)
self.assertNotInBytecode(code, "LOAD_NAME")
self.assertNotInBytecode(code, "LOAD_NAME", "a")
def test_assert_not_in_with_arg_not_in_bytecode(self):
code = compile("a = 1", "<string>", "exec")
self.assertInBytecode(code, "LOAD_CONST")
self.assertInBytecode(code, "LOAD_CONST", 1)
self.assertNotInBytecode(code, "LOAD_CONST", 2)
def test_assert_not_in_with_arg_in_bytecode(self):
code = compile("a = 1", "<string>", "exec")
with self.assertRaises(AssertionError):
self.assertNotInBytecode(code, "LOAD_CONST", 1)
class TestFinderMethods(unittest.TestCase):
def test__find_imports(self):
cases = [
("import a.b.c", ('a.b.c', 0, None)),
("from a.b import c", ('a.b', 0, ('c',))),
("from a.b import c as d", ('a.b', 0, ('c',))),
("from a.b import *", ('a.b', 0, ('*',))),
("from ...a.b import c as d", ('a.b', 3, ('c',))),
("from ..a.b import c as d, e as f", ('a.b', 2, ('c', 'e'))),
("from ..a.b import *", ('a.b', 2, ('*',))),
]
for src, expected in cases:
with self.subTest(src=src):
code = compile(src, "<string>", "exec")
res = tuple(dis._find_imports(code))
self.assertEqual(len(res), 1)
self.assertEqual(res[0], expected)
def test__find_store_names(self):
cases = [
("x+y", ()),
("x=y=1", ('x', 'y')),
("x+=y", ('x',)),
("global x\nx=y=1", ('x', 'y')),
("global x\nz=x", ('z',)),
]
for src, expected in cases:
with self.subTest(src=src):
code = compile(src, "<string>", "exec")
res = tuple(dis._find_store_names(code))
self.assertEqual(res, expected)
def test_findlabels(self):
labels = dis.findlabels(jumpy.__code__.co_code)
jumps = [
instr.offset
for instr in expected_opinfo_jumpy
if instr.is_jump_target
]
self.assertEqual(sorted(labels), sorted(jumps))
def test_findlinestarts(self):
def func():
pass
code = func.__code__
offsets = [linestart[0] for linestart in dis.findlinestarts(code)]
self.assertEqual(offsets, [0, 2])
class TestDisTraceback(DisTestBase):
def setUp(self) -> None:
try: # We need to clean up existing tracebacks
del sys.last_exc
except AttributeError:
pass
try: # We need to clean up existing tracebacks
del sys.last_traceback
except AttributeError:
pass
return super().setUp()
def get_disassembly(self, tb):
output = io.StringIO()
with contextlib.redirect_stdout(output):
dis.distb(tb)
return output.getvalue()
def test_distb_empty(self):
with self.assertRaises(RuntimeError):
dis.distb()
def test_distb_last_traceback(self):
self.maxDiff = None
# We need to have an existing last traceback in `sys`:
tb = get_tb()
sys.last_traceback = tb
self.do_disassembly_compare(self.get_disassembly(None), dis_traceback)
def test_distb_explicit_arg(self):
self.maxDiff = None
tb = get_tb()
self.do_disassembly_compare(self.get_disassembly(tb), dis_traceback)
class TestDisTracebackWithFile(TestDisTraceback):
# Run the `distb` tests again, using the file arg instead of print
def get_disassembly(self, tb):
output = io.StringIO()
with contextlib.redirect_stdout(output):
dis.distb(tb, file=output)
return output.getvalue()
def _unroll_caches_as_Instructions(instrs, show_caches=False):
# Cache entries are no longer reported by dis as fake instructions,
# but some tests assume that do. We should rewrite the tests to assume
# the new API, but it will be clearer to keep the tests working as
# before and do that in a separate PR.
for instr in instrs:
yield instr
if not show_caches:
continue
offset = instr.offset
for name, size, data in (instr.cache_info or ()):
for i in range(size):
offset += 2
# Only show the fancy argrepr for a CACHE instruction when it's
# the first entry for a particular cache value:
if i == 0:
argrepr = f"{name}: {int.from_bytes(data, sys.byteorder)}"
else:
argrepr = ""
yield Instruction("CACHE", CACHE, 0, None, argrepr, offset, offset,
False, None, None, instr.positions)
if __name__ == "__main__":
unittest.main()
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