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2604 lines (2217 loc) · 108 KB
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# Minimal tests for dis module
import ast
import contextlib
import dis
import functools
import io
import itertools
import opcode
import re
import sys
import tempfile
import textwrap
import types
import unittest
from test.support import (captured_stdout, requires_debug_ranges,
requires_specialization, cpython_only,
os_helper, import_helper, reset_code)
from test.support.bytecode_helper import BytecodeTestCase
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_BORROW 1 (x)
LOAD_SMALL_INT 1
COMPARE_OP 72 (==)
LOAD_FAST_BORROW 0 (self)
STORE_ATTR 0 (x)
LOAD_CONST 1 (None)
RETURN_VALUE
""" % (_C.__init__.__code__.co_firstlineno, _C.__init__.__code__.co_firstlineno + 1,)
dis_c_instance_method_bytes = """\
RESUME 0
LOAD_FAST_BORROW 1
LOAD_SMALL_INT 1
COMPARE_OP 72 (==)
LOAD_FAST_BORROW 0
STORE_ATTR 0
LOAD_CONST 1
RETURN_VALUE
"""
dis_c_class_method = """\
%3d RESUME 0
%3d LOAD_FAST_BORROW 1 (x)
LOAD_SMALL_INT 1
COMPARE_OP 72 (==)
LOAD_FAST_BORROW 0 (cls)
STORE_ATTR 0 (x)
LOAD_CONST 1 (None)
RETURN_VALUE
""" % (_C.cm.__code__.co_firstlineno, _C.cm.__code__.co_firstlineno + 2,)
dis_c_static_method = """\
%3d RESUME 0
%3d LOAD_FAST_BORROW 0 (x)
LOAD_SMALL_INT 1
COMPARE_OP 72 (==)
STORE_FAST 0 (x)
LOAD_CONST 1 (None)
RETURN_VALUE
""" % (_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_BORROW 0 (a)
CALL 1
POP_TOP
%3d LOAD_SMALL_INT 1
RETURN_VALUE
""" % (_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_BORROW 0 (a)
14 CALL 1
22 POP_TOP
%3d 24 LOAD_SMALL_INT 1
26 RETURN_VALUE
""" % (_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_BORROW 0 (a)
%-14s CALL 1
%-14s POP_TOP
%-14s LOAD_SMALL_INT 1
%-14s RETURN_VALUE
"""
dis_f_co_code = """\
RESUME 0
LOAD_GLOBAL 1
LOAD_FAST_BORROW 0
CALL 1
POP_TOP
LOAD_SMALL_INT 1
RETURN_VALUE
"""
def bug708901():
for res in range(1,
10):
pass
dis_bug708901 = """\
%3d RESUME 0
%3d LOAD_GLOBAL 1 (range + NULL)
LOAD_SMALL_INT 1
%3d LOAD_SMALL_INT 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_ITER
LOAD_CONST 1 (None)
RETURN_VALUE
""" % (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_BORROW 0 (x)
CALL 0
%3d LOAD_SMALL_INT 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
LOAD_CONST 0 (None)
RETURN_VALUE
"""
# Extended arg followed by NOP
code_bug_45757 = bytes([
opcode.opmap['EXTENDED_ARG'], 0x01,
opcode.opmap['NOP'], 0xFF,
opcode.opmap['EXTENDED_ARG'], 0x01,
opcode.opmap['LOAD_CONST'], 0x29,
opcode.opmap['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_SMALL_INT 1
LOAD_SMALL_INT 2
LOAD_SMALL_INT 5
LOAD_CONST 1 (('c',))
CALL_KW 3
POP_TOP
LOAD_CONST 2 (None)
RETURN_VALUE
""" % (wrap_func_w_kwargs.__code__.co_firstlineno,
wrap_func_w_kwargs.__code__.co_firstlineno + 1)
dis_intrinsic_1_2 = """\
0 RESUME 0
1 LOAD_SMALL_INT 0
LOAD_CONST 1 (('*',))
IMPORT_NAME 0 (math)
CALL_INTRINSIC_1 2 (INTRINSIC_IMPORT_STAR)
POP_TOP
LOAD_CONST 2 (None)
RETURN_VALUE
"""
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
LOAD_CONST 0 (None)
RETURN_VALUE
"""
_BIG_LINENO_FORMAT2 = """\
1 RESUME 0
%4d LOAD_GLOBAL 0 (spam)
POP_TOP
LOAD_CONST 0 (None)
RETURN_VALUE
"""
dis_module_expected_results = """\
Disassembly of f:
4 RESUME 0
LOAD_CONST 0 (None)
RETURN_VALUE
Disassembly of g:
5 RESUME 0
LOAD_CONST 0 (None)
RETURN_VALUE
"""
expr_str = "x + 1"
dis_expr_str = """\
0 RESUME 0
1 LOAD_NAME 0 (x)
LOAD_SMALL_INT 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_SMALL_INT 1
BINARY_OP 0 (+)
STORE_NAME 0 (x)
LOAD_CONST 1 (None)
RETURN_VALUE
"""
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 = """\
-- MAKE_CELL 0 (__conditional_annotations__)
0 RESUME 0
2 LOAD_CONST 1 (<code object __annotate__ at 0x..., file "<dis>", line 2>)
MAKE_FUNCTION
STORE_NAME 4 (__annotate__)
BUILD_SET 0
STORE_NAME 0 (__conditional_annotations__)
LOAD_SMALL_INT 1
STORE_NAME 1 (x)
LOAD_NAME 0 (__conditional_annotations__)
LOAD_SMALL_INT 0
SET_ADD 1
POP_TOP
3 LOAD_NAME 0 (__conditional_annotations__)
LOAD_SMALL_INT 1
SET_ADD 1
POP_TOP
4 LOAD_SMALL_INT 1
LOAD_NAME 2 (lst)
LOAD_NAME 3 (fun)
PUSH_NULL
LOAD_SMALL_INT 0
CALL 1
STORE_SUBSCR
LOAD_CONST 2 (None)
RETURN_VALUE
"""
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)
LOAD_CONST 2 (None)
RETURN_VALUE
"""
compound_stmt_str = """\
x = 0
while 1:
x += 1"""
# Trailing newline has been deliberately omitted
dis_compound_stmt_str = """\
0 RESUME 0
1 LOAD_SMALL_INT 0
STORE_NAME 0 (x)
2 L1: NOP
3 LOAD_NAME 0 (x)
LOAD_SMALL_INT 1
BINARY_OP 13 (+=)
STORE_NAME 0 (x)
JUMP_BACKWARD 12 (to L1)
"""
dis_traceback = """\
%4d RESUME 0
%4d NOP
%4d L1: LOAD_SMALL_INT 1
LOAD_SMALL_INT 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 24 (to L7)
NOT_TAKEN
STORE_FAST 0 (e)
%4d L4: LOAD_FAST 0 (e)
LOAD_ATTR 2 (__traceback__)
STORE_FAST 1 (tb)
L5: POP_EXCEPT
LOAD_CONST 1 (None)
STORE_FAST 0 (e)
DELETE_FAST 0 (e)
%4d LOAD_FAST 1 (tb)
RETURN_VALUE
-- L6: LOAD_CONST 1 (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_BORROW 0 (a)
FORMAT_SIMPLE
LOAD_CONST 0 (' ')
LOAD_FAST_BORROW 1 (b)
LOAD_CONST 1 ('4')
FORMAT_WITH_SPEC
LOAD_CONST 0 (' ')
LOAD_FAST_BORROW 2 (c)
CONVERT_VALUE 2 (repr)
FORMAT_SIMPLE
LOAD_CONST 0 (' ')
LOAD_FAST_BORROW 3 (d)
CONVERT_VALUE 2 (repr)
LOAD_CONST 1 ('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_BORROW 0 (c)
COPY 1
LOAD_SPECIAL 1 (__exit__)
SWAP 2
SWAP 3
LOAD_SPECIAL 0 (__enter__)
CALL 0
L1: POP_TOP
%4d LOAD_SMALL_INT 1
STORE_FAST 1 (x)
%4d L2: LOAD_CONST 1 (None)
LOAD_CONST 1 (None)
LOAD_CONST 1 (None)
CALL 3
POP_TOP
%4d LOAD_SMALL_INT 2
STORE_FAST 2 (y)
LOAD_CONST 1 (None)
RETURN_VALUE
%4d L3: PUSH_EXC_INFO
WITH_EXCEPT_START
TO_BOOL
POP_JUMP_IF_TRUE 2 (to L4)
NOT_TAKEN
RERAISE 2
L4: POP_TOP
L5: POP_EXCEPT
POP_TOP
POP_TOP
POP_TOP
%4d LOAD_SMALL_INT 2
STORE_FAST 2 (y)
LOAD_CONST 1 (None)
RETURN_VALUE
-- 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_SMALL_INT 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_SMALL_INT 2
STORE_FAST 2 (y)
LOAD_CONST 0 (None)
RETURN_VALUE
%4d L12: CLEANUP_THROW
L13: JUMP_BACKWARD_NO_INTERRUPT 26 (to L5)
L14: CLEANUP_THROW
L15: JUMP_BACKWARD_NO_INTERRUPT 10 (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 2 (to L24)
L22: NOT_TAKEN
L23: RERAISE 2
L24: POP_TOP
L25: POP_EXCEPT
POP_TOP
POP_TOP
POP_TOP
%4d LOAD_SMALL_INT 2
STORE_FAST 2 (y)
LOAD_CONST 0 (None)
RETURN_VALUE
-- L26: COPY 3
POP_EXCEPT
RERAISE 1
L27: CALL_INTRINSIC_1 3 (INTRINSIC_STOPITERATION_ERROR)
RERAISE 1
ExceptionTable:
L1 to L3 -> L27 [0] lasti
L3 to L4 -> L12 [4]
L4 to L6 -> L27 [0] lasti
L6 to L7 -> L16 [2] lasti
L7 to L9 -> L27 [0] lasti
L9 to L10 -> L14 [2]
L10 to L13 -> L27 [0] lasti
L14 to L15 -> L27 [0] lasti
L16 to L18 -> L26 [4] lasti
L18 to L19 -> L20 [7]
L19 to L22 -> L26 [4] lasti
L23 to L25 -> L26 [4] lasti
L25 to L27 -> L27 [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_BORROW 0 (a)
%4d L2: LOAD_FAST_BORROW 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_BORROW 0 (b)
PUSH_NULL
CALL 0
POP_TOP
LOAD_SMALL_INT 1
RETURN_VALUE
-- 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_BORROW 0 (y)
BUILD_TUPLE 1
LOAD_CONST 0 (<code object foo at 0x..., file "%s", line %d>)
MAKE_FUNCTION
SET_FUNCTION_ATTRIBUTE 8 (closure)
STORE_FAST 1 (foo)
%4d LOAD_FAST_BORROW 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_BORROW 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)
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)
GET_ITER
L2: FOR_ITER 14 (to L3)
STORE_FAST 1 (z)
LOAD_DEREF 2 (x)
LOAD_FAST_BORROW 1 (z)
BINARY_OP 0 (+)
YIELD_VALUE 0
RESUME 5
POP_TOP
JUMP_BACKWARD 16 (to L2)
L3: END_FOR
POP_ITER
LOAD_CONST 0 (None)
RETURN_VALUE
-- 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_BORROW_LOAD_FAST_BORROW 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 2 ((1, 2, 3))
LIST_EXTEND 1
LOAD_SMALL_INT 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_BORROW 0 (i)
CALL_PY_GENERAL 1
POP_TOP
JUMP_BACKWARD_{: <6} 16 (to L1)
%3d L2: END_FOR
POP_ITER
LOAD_CONST 1 (None)
RETURN_VALUE
""" % (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 0 (Ellipsis)
EXTENDED_ARG 1
UNPACK_EX 256
POP_TOP
STORE_FAST 0 (_)
LOAD_CONST 1 (None)
RETURN_VALUE
"""% (extended_arg_quick.__code__.co_firstlineno,
extended_arg_quick.__code__.co_firstlineno + 1,)
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)