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838 lines
40 KiB
Python
838 lines
40 KiB
Python
# Minimal tests for dis module
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from test.support import run_unittest, captured_stdout
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from test.bytecode_helper import BytecodeTestCase
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import difflib
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import unittest
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import sys
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import dis
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import io
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import re
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import types
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import contextlib
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def get_tb():
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def _error():
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try:
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1 / 0
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except Exception as e:
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tb = e.__traceback__
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return tb
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tb = _error()
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while tb.tb_next:
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tb = tb.tb_next
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return tb
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TRACEBACK_CODE = get_tb().tb_frame.f_code
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class _C:
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def __init__(self, x):
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self.x = x == 1
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dis_c_instance_method = """\
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%-4d 0 LOAD_FAST 1 (x)
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3 LOAD_CONST 1 (1)
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6 COMPARE_OP 2 (==)
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9 LOAD_FAST 0 (self)
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12 STORE_ATTR 0 (x)
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15 LOAD_CONST 0 (None)
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18 RETURN_VALUE
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""" % (_C.__init__.__code__.co_firstlineno + 1,)
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dis_c_instance_method_bytes = """\
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0 LOAD_FAST 1 (1)
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3 LOAD_CONST 1 (1)
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6 COMPARE_OP 2 (==)
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9 LOAD_FAST 0 (0)
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12 STORE_ATTR 0 (0)
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15 LOAD_CONST 0 (0)
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18 RETURN_VALUE
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"""
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def _f(a):
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print(a)
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return 1
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dis_f = """\
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%-4d 0 LOAD_GLOBAL 0 (print)
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3 LOAD_FAST 0 (a)
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6 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
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9 POP_TOP
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%-4d 10 LOAD_CONST 1 (1)
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13 RETURN_VALUE
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""" % (_f.__code__.co_firstlineno + 1,
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_f.__code__.co_firstlineno + 2)
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dis_f_co_code = """\
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0 LOAD_GLOBAL 0 (0)
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3 LOAD_FAST 0 (0)
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6 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
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9 POP_TOP
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10 LOAD_CONST 1 (1)
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13 RETURN_VALUE
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"""
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def bug708901():
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for res in range(1,
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10):
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pass
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dis_bug708901 = """\
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%-4d 0 SETUP_LOOP 23 (to 26)
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3 LOAD_GLOBAL 0 (range)
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6 LOAD_CONST 1 (1)
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%-4d 9 LOAD_CONST 2 (10)
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12 CALL_FUNCTION 2 (2 positional, 0 keyword pair)
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15 GET_ITER
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>> 16 FOR_ITER 6 (to 25)
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19 STORE_FAST 0 (res)
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%-4d 22 JUMP_ABSOLUTE 16
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>> 25 POP_BLOCK
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>> 26 LOAD_CONST 0 (None)
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29 RETURN_VALUE
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""" % (bug708901.__code__.co_firstlineno + 1,
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bug708901.__code__.co_firstlineno + 2,
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bug708901.__code__.co_firstlineno + 3)
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def bug1333982(x=[]):
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assert 0, ([s for s in x] +
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1)
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pass
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dis_bug1333982 = """\
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%3d 0 LOAD_CONST 1 (0)
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3 POP_JUMP_IF_TRUE 35
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6 LOAD_GLOBAL 0 (AssertionError)
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9 LOAD_CONST 2 (<code object <listcomp> at 0x..., file "%s", line %d>)
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12 LOAD_CONST 3 ('bug1333982.<locals>.<listcomp>')
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15 MAKE_FUNCTION 0
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18 LOAD_FAST 0 (x)
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21 GET_ITER
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22 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
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%3d 25 LOAD_CONST 4 (1)
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28 BINARY_ADD
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29 CALL_FUNCTION 1 (1 positional, 0 keyword pair)
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32 RAISE_VARARGS 1
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%3d >> 35 LOAD_CONST 0 (None)
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38 RETURN_VALUE
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""" % (bug1333982.__code__.co_firstlineno + 1,
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__file__,
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bug1333982.__code__.co_firstlineno + 1,
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bug1333982.__code__.co_firstlineno + 2,
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bug1333982.__code__.co_firstlineno + 3)
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_BIG_LINENO_FORMAT = """\
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%3d 0 LOAD_GLOBAL 0 (spam)
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3 POP_TOP
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4 LOAD_CONST 0 (None)
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7 RETURN_VALUE
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"""
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dis_module_expected_results = """\
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Disassembly of f:
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4 0 LOAD_CONST 0 (None)
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3 RETURN_VALUE
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Disassembly of g:
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5 0 LOAD_CONST 0 (None)
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3 RETURN_VALUE
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"""
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expr_str = "x + 1"
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dis_expr_str = """\
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1 0 LOAD_NAME 0 (x)
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3 LOAD_CONST 0 (1)
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6 BINARY_ADD
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7 RETURN_VALUE
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"""
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simple_stmt_str = "x = x + 1"
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dis_simple_stmt_str = """\
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1 0 LOAD_NAME 0 (x)
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3 LOAD_CONST 0 (1)
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6 BINARY_ADD
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7 STORE_NAME 0 (x)
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10 LOAD_CONST 1 (None)
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13 RETURN_VALUE
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"""
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compound_stmt_str = """\
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x = 0
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while 1:
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x += 1"""
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# Trailing newline has been deliberately omitted
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dis_compound_stmt_str = """\
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1 0 LOAD_CONST 0 (0)
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3 STORE_NAME 0 (x)
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2 6 SETUP_LOOP 14 (to 23)
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3 >> 9 LOAD_NAME 0 (x)
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12 LOAD_CONST 1 (1)
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15 INPLACE_ADD
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16 STORE_NAME 0 (x)
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19 JUMP_ABSOLUTE 9
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22 POP_BLOCK
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>> 23 LOAD_CONST 2 (None)
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26 RETURN_VALUE
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"""
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dis_traceback = """\
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%-4d 0 SETUP_EXCEPT 12 (to 15)
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%-4d 3 LOAD_CONST 1 (1)
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6 LOAD_CONST 2 (0)
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--> 9 BINARY_TRUE_DIVIDE
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10 POP_TOP
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11 POP_BLOCK
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12 JUMP_FORWARD 46 (to 61)
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%-4d >> 15 DUP_TOP
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16 LOAD_GLOBAL 0 (Exception)
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19 COMPARE_OP 10 (exception match)
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22 POP_JUMP_IF_FALSE 60
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25 POP_TOP
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26 STORE_FAST 0 (e)
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29 POP_TOP
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30 SETUP_FINALLY 14 (to 47)
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%-4d 33 LOAD_FAST 0 (e)
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36 LOAD_ATTR 1 (__traceback__)
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39 STORE_FAST 1 (tb)
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42 POP_BLOCK
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43 POP_EXCEPT
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44 LOAD_CONST 0 (None)
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>> 47 LOAD_CONST 0 (None)
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50 STORE_FAST 0 (e)
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53 DELETE_FAST 0 (e)
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56 END_FINALLY
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57 JUMP_FORWARD 1 (to 61)
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>> 60 END_FINALLY
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%-4d >> 61 LOAD_FAST 1 (tb)
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64 RETURN_VALUE
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""" % (TRACEBACK_CODE.co_firstlineno + 1,
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TRACEBACK_CODE.co_firstlineno + 2,
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TRACEBACK_CODE.co_firstlineno + 3,
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TRACEBACK_CODE.co_firstlineno + 4,
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TRACEBACK_CODE.co_firstlineno + 5)
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def _g(x):
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yield x
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class DisTests(unittest.TestCase):
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def get_disassembly(self, func, lasti=-1, wrapper=True):
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# We want to test the default printing behaviour, not the file arg
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output = io.StringIO()
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with contextlib.redirect_stdout(output):
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if wrapper:
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dis.dis(func)
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else:
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dis.disassemble(func, lasti)
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return output.getvalue()
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def get_disassemble_as_string(self, func, lasti=-1):
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return self.get_disassembly(func, lasti, False)
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def strip_addresses(self, text):
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return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text)
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def do_disassembly_test(self, func, expected):
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got = self.get_disassembly(func)
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if got != expected:
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got = self.strip_addresses(got)
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self.assertEqual(got, expected)
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def test_opmap(self):
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self.assertEqual(dis.opmap["NOP"], 9)
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self.assertIn(dis.opmap["LOAD_CONST"], dis.hasconst)
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self.assertIn(dis.opmap["STORE_NAME"], dis.hasname)
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def test_opname(self):
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self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST")
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def test_boundaries(self):
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self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG)
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self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT)
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def test_dis(self):
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self.do_disassembly_test(_f, dis_f)
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def test_bug_708901(self):
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self.do_disassembly_test(bug708901, dis_bug708901)
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def test_bug_1333982(self):
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# This one is checking bytecodes generated for an `assert` statement,
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# so fails if the tests are run with -O. Skip this test then.
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if not __debug__:
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self.skipTest('need asserts, run without -O')
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self.do_disassembly_test(bug1333982, dis_bug1333982)
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def test_big_linenos(self):
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def func(count):
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namespace = {}
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func = "def foo():\n " + "".join(["\n "] * count + ["spam\n"])
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exec(func, namespace)
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return namespace['foo']
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# Test all small ranges
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for i in range(1, 300):
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expected = _BIG_LINENO_FORMAT % (i + 2)
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self.do_disassembly_test(func(i), expected)
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# Test some larger ranges too
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for i in range(300, 5000, 10):
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expected = _BIG_LINENO_FORMAT % (i + 2)
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self.do_disassembly_test(func(i), expected)
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from test import dis_module
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self.do_disassembly_test(dis_module, dis_module_expected_results)
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def test_disassemble_str(self):
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self.do_disassembly_test(expr_str, dis_expr_str)
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self.do_disassembly_test(simple_stmt_str, dis_simple_stmt_str)
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self.do_disassembly_test(compound_stmt_str, dis_compound_stmt_str)
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def test_disassemble_bytes(self):
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self.do_disassembly_test(_f.__code__.co_code, dis_f_co_code)
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def test_disassemble_method(self):
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self.do_disassembly_test(_C(1).__init__, dis_c_instance_method)
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def test_disassemble_method_bytes(self):
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method_bytecode = _C(1).__init__.__code__.co_code
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self.do_disassembly_test(method_bytecode, dis_c_instance_method_bytes)
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def test_disassemble_generator(self):
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gen_func_disas = self.get_disassembly(_g) # Disassemble generator function
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gen_disas = self.get_disassembly(_g(1)) # Disassemble generator itself
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self.assertEqual(gen_disas, gen_func_disas)
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def test_dis_none(self):
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try:
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del sys.last_traceback
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except AttributeError:
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pass
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self.assertRaises(RuntimeError, dis.dis, None)
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def test_dis_traceback(self):
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try:
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del sys.last_traceback
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except AttributeError:
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pass
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try:
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1/0
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except Exception as e:
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tb = e.__traceback__
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sys.last_traceback = tb
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tb_dis = self.get_disassemble_as_string(tb.tb_frame.f_code, tb.tb_lasti)
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self.do_disassembly_test(None, tb_dis)
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def test_dis_object(self):
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self.assertRaises(TypeError, dis.dis, object())
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class DisWithFileTests(DisTests):
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# Run the tests again, using the file arg instead of print
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def get_disassembly(self, func, lasti=-1, wrapper=True):
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output = io.StringIO()
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if wrapper:
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dis.dis(func, file=output)
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else:
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dis.disassemble(func, lasti, file=output)
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return output.getvalue()
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code_info_code_info = """\
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Name: code_info
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Filename: (.*)
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Argument count: 1
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Kw-only arguments: 0
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Number of locals: 1
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Stack size: 3
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Flags: OPTIMIZED, NEWLOCALS, NOFREE
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Constants:
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0: %r
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Names:
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0: _format_code_info
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1: _get_code_object
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Variable names:
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0: x""" % (('Formatted details of methods, functions, or code.',)
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if sys.flags.optimize < 2 else (None,))
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@staticmethod
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def tricky(x, y, z=True, *args, c, d, e=[], **kwds):
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def f(c=c):
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print(x, y, z, c, d, e, f)
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yield x, y, z, c, d, e, f
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code_info_tricky = """\
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Name: tricky
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Filename: (.*)
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Argument count: 3
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Kw-only arguments: 3
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Number of locals: 8
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Stack size: 7
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Flags: OPTIMIZED, NEWLOCALS, VARARGS, VARKEYWORDS, GENERATOR
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Constants:
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0: None
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1: <code object f at (.*), file "(.*)", line (.*)>
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2: 'tricky.<locals>.f'
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Variable names:
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0: x
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1: y
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2: z
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3: c
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4: d
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5: e
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6: args
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7: kwds
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Cell variables:
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0: [edfxyz]
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1: [edfxyz]
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2: [edfxyz]
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3: [edfxyz]
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4: [edfxyz]
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5: [edfxyz]"""
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# NOTE: the order of the cell variables above depends on dictionary order!
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co_tricky_nested_f = tricky.__func__.__code__.co_consts[1]
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code_info_tricky_nested_f = """\
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Name: f
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Filename: (.*)
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Argument count: 1
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Kw-only arguments: 0
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Number of locals: 1
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Stack size: 8
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Flags: OPTIMIZED, NEWLOCALS, NESTED
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Constants:
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0: None
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Names:
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0: print
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Variable names:
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0: c
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Free variables:
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0: [edfxyz]
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1: [edfxyz]
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2: [edfxyz]
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3: [edfxyz]
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4: [edfxyz]
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5: [edfxyz]"""
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code_info_expr_str = """\
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Name: <module>
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Filename: <disassembly>
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Argument count: 0
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Kw-only arguments: 0
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Number of locals: 0
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Stack size: 2
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Flags: NOFREE
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Constants:
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0: 1
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Names:
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0: x"""
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code_info_simple_stmt_str = """\
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Name: <module>
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Filename: <disassembly>
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Argument count: 0
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Kw-only arguments: 0
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Number of locals: 0
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Stack size: 2
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Flags: NOFREE
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Constants:
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0: 1
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1: None
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Names:
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0: x"""
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code_info_compound_stmt_str = """\
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Name: <module>
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Filename: <disassembly>
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Argument count: 0
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Kw-only arguments: 0
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Number of locals: 0
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Stack size: 2
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Flags: NOFREE
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Constants:
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0: 0
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1: 1
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2: None
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Names:
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0: x"""
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class CodeInfoTests(unittest.TestCase):
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test_pairs = [
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(dis.code_info, code_info_code_info),
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(tricky, code_info_tricky),
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(co_tricky_nested_f, code_info_tricky_nested_f),
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(expr_str, code_info_expr_str),
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(simple_stmt_str, code_info_simple_stmt_str),
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(compound_stmt_str, code_info_compound_stmt_str),
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]
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def test_code_info(self):
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self.maxDiff = 1000
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for x, expected in self.test_pairs:
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self.assertRegex(dis.code_info(x), expected)
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def test_show_code(self):
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self.maxDiff = 1000
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for x, expected in self.test_pairs:
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with captured_stdout() as output:
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dis.show_code(x)
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self.assertRegex(output.getvalue(), expected+"\n")
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output = io.StringIO()
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dis.show_code(x, file=output)
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self.assertRegex(output.getvalue(), expected)
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def test_code_info_object(self):
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self.assertRaises(TypeError, dis.code_info, object())
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def test_pretty_flags_no_flags(self):
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self.assertEqual(dis.pretty_flags(0), '0x0')
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# Fodder for instruction introspection tests
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# Editing any of these may require recalculating the expected output
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def outer(a=1, b=2):
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def f(c=3, d=4):
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def inner(e=5, f=6):
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print(a, b, c, d, e, f)
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print(a, b, c, d)
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return inner
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print(a, b, '', 1, [], {}, "Hello world!")
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return f
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def jumpy():
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# This won't actually run (but that's OK, we only disassemble it)
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for i in range(10):
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print(i)
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if i < 4:
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continue
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if i > 6:
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break
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else:
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print("I can haz else clause?")
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while i:
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print(i)
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i -= 1
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if i > 6:
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continue
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if i < 4:
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break
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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[3]
|
|
expected_f_line = code_object_f.co_firstlineno - _line_offset
|
|
code_object_inner = code_object_f.co_consts[3]
|
|
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
|
|
|
|
#_instructions = dis.get_instructions(outer, first_line=expected_outer_line)
|
|
#print('expected_opinfo_outer = [\n ',
|
|
#',\n '.join(map(str, _instructions)), ',\n]', sep='')
|
|
#_instructions = dis.get_instructions(outer(), first_line=expected_f_line)
|
|
#print('expected_opinfo_f = [\n ',
|
|
#',\n '.join(map(str, _instructions)), ',\n]', sep='')
|
|
#_instructions = dis.get_instructions(outer()(), first_line=expected_inner_line)
|
|
#print('expected_opinfo_inner = [\n ',
|
|
#',\n '.join(map(str, _instructions)), ',\n]', sep='')
|
|
#_instructions = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
|
|
#print('expected_opinfo_jumpy = [\n ',
|
|
#',\n '.join(map(str, _instructions)), ',\n]', sep='')
|
|
|
|
|
|
Instruction = dis.Instruction
|
|
expected_opinfo_outer = [
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=3, argrepr='3', offset=0, starts_line=2, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=3, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=0, argval='a', argrepr='a', offset=6, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=1, argval='b', argrepr='b', offset=9, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BUILD_TUPLE', opcode=102, arg=2, argval=2, argrepr='', offset=12, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=code_object_f, argrepr=repr(code_object_f), offset=15, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='outer.<locals>.f', argrepr="'outer.<locals>.f'", offset=18, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='MAKE_CLOSURE', opcode=134, arg=2, argval=2, argrepr='', offset=21, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='f', argrepr='f', offset=24, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=27, starts_line=7, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='a', argrepr='a', offset=30, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='b', argrepr='b', offset=33, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval='', argrepr="''", offset=36, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval=1, argrepr='1', offset=39, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BUILD_LIST', opcode=103, arg=0, argval=0, argrepr='', offset=42, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BUILD_MAP', opcode=105, arg=0, argval=0, argrepr='', offset=45, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval='Hello world!', argrepr="'Hello world!'", offset=48, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=7, argval=7, argrepr='7 positional, 0 keyword pair', offset=51, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=54, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='f', argrepr='f', offset=55, starts_line=8, is_jump_target=False),
|
|
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=58, starts_line=None, is_jump_target=False),
|
|
]
|
|
|
|
expected_opinfo_f = [
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=5, argrepr='5', offset=0, starts_line=3, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=6, argrepr='6', offset=3, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=2, argval='a', argrepr='a', offset=6, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=3, argval='b', argrepr='b', offset=9, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=0, argval='c', argrepr='c', offset=12, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CLOSURE', opcode=135, arg=1, argval='d', argrepr='d', offset=15, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BUILD_TUPLE', opcode=102, arg=4, argval=4, argrepr='', offset=18, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=code_object_inner, argrepr=repr(code_object_inner), offset=21, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='outer.<locals>.f.<locals>.inner', argrepr="'outer.<locals>.f.<locals>.inner'", offset=24, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='MAKE_CLOSURE', opcode=134, arg=2, argval=2, argrepr='', offset=27, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='STORE_FAST', opcode=125, arg=2, argval='inner', argrepr='inner', offset=30, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=33, starts_line=5, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=2, argval='a', argrepr='a', offset=36, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='b', argrepr='b', offset=39, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='c', argrepr='c', offset=42, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='d', argrepr='d', offset=45, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=4, argval=4, argrepr='4 positional, 0 keyword pair', offset=48, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=51, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=2, argval='inner', argrepr='inner', offset=52, starts_line=6, is_jump_target=False),
|
|
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=55, starts_line=None, is_jump_target=False),
|
|
]
|
|
|
|
expected_opinfo_inner = [
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='print', argrepr='print', offset=0, starts_line=4, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=0, argval='a', argrepr='a', offset=3, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=1, argval='b', argrepr='b', offset=6, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=2, argval='c', argrepr='c', offset=9, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_DEREF', opcode=136, arg=3, argval='d', argrepr='d', offset=12, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='e', argrepr='e', offset=15, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=1, argval='f', argrepr='f', offset=18, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=6, argval=6, argrepr='6 positional, 0 keyword pair', offset=21, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=24, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=25, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=28, starts_line=None, is_jump_target=False),
|
|
]
|
|
|
|
expected_opinfo_jumpy = [
|
|
Instruction(opname='SETUP_LOOP', opcode=120, arg=68, argval=71, argrepr='to 71', offset=0, starts_line=3, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=0, argval='range', argrepr='range', offset=3, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=1, argval=10, argrepr='10', offset=6, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=9, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='GET_ITER', opcode=68, arg=None, argval=None, argrepr='', offset=12, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='FOR_ITER', opcode=93, arg=44, argval=60, argrepr='to 60', offset=13, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=16, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=19, starts_line=4, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=22, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=25, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=28, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=29, starts_line=5, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=32, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='COMPARE_OP', opcode=107, arg=0, argval='<', argrepr='<', offset=35, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=44, argval=44, argrepr='', offset=38, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=41, starts_line=6, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=44, starts_line=7, is_jump_target=True),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=47, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=50, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=13, argval=13, argrepr='', offset=53, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=56, starts_line=8, is_jump_target=False),
|
|
Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=57, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=60, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=61, starts_line=10, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=4, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=64, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=67, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=70, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='SETUP_LOOP', opcode=120, arg=68, argval=142, argrepr='to 142', offset=71, starts_line=11, is_jump_target=True),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=74, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=131, argval=131, argrepr='', offset=77, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=80, starts_line=12, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=83, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=86, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=89, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=90, starts_line=13, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=93, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='INPLACE_SUBTRACT', opcode=56, arg=None, argval=None, argrepr='', offset=96, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=97, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=100, starts_line=14, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=103, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=106, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=115, argval=115, argrepr='', offset=109, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=74, argval=74, argrepr='', offset=112, starts_line=15, is_jump_target=False),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=115, starts_line=16, is_jump_target=True),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=118, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='COMPARE_OP', opcode=107, arg=0, argval='<', argrepr='<', offset=121, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=74, argval=74, argrepr='', offset=124, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=127, starts_line=17, is_jump_target=False),
|
|
Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=74, argval=74, argrepr='', offset=128, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=131, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=132, starts_line=19, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=6, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=135, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=138, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=141, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='SETUP_FINALLY', opcode=122, arg=72, argval=217, argrepr='to 217', offset=142, starts_line=20, is_jump_target=True),
|
|
Instruction(opname='SETUP_EXCEPT', opcode=121, arg=12, argval=160, argrepr='to 160', offset=145, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=148, starts_line=21, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval=0, argrepr='0', offset=151, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='BINARY_TRUE_DIVIDE', opcode=27, arg=None, argval=None, argrepr='', offset=154, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=155, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=156, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='JUMP_FORWARD', opcode=110, arg=28, argval=188, argrepr='to 188', offset=157, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='DUP_TOP', opcode=4, arg=None, argval=None, argrepr='', offset=160, starts_line=22, is_jump_target=True),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=2, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=161, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='COMPARE_OP', opcode=107, arg=10, argval='exception match', argrepr='exception match', offset=164, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=187, argval=187, argrepr='', offset=167, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=170, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=171, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=172, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=173, starts_line=23, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=8, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=176, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=179, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=182, starts_line=None, is_jump_target=False),
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Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=183, starts_line=None, is_jump_target=False),
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|
Instruction(opname='JUMP_FORWARD', opcode=110, arg=26, argval=213, argrepr='to 213', offset=184, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=187, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=188, starts_line=25, is_jump_target=True),
|
|
Instruction(opname='SETUP_WITH', opcode=143, arg=17, argval=211, argrepr='to 211', offset=191, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='STORE_FAST', opcode=125, arg=1, argval='dodgy', argrepr='dodgy', offset=194, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=197, starts_line=26, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Never reach this', argrepr="'Never reach this'", offset=200, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=203, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=206, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=207, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=208, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='WITH_CLEANUP', opcode=81, arg=None, argval=None, argrepr='', offset=211, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=212, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=213, starts_line=None, is_jump_target=True),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=214, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=217, starts_line=28, is_jump_target=True),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=10, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=220, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=223, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=226, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=227, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=228, starts_line=None, is_jump_target=False),
|
|
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=231, starts_line=None, is_jump_target=False),
|
|
]
|
|
|
|
# One last piece of inspect fodder to check the default line number handling
|
|
def simple(): pass
|
|
expected_opinfo_simple = [
|
|
Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=0, starts_line=simple.__code__.co_firstlineno, is_jump_target=False),
|
|
Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=3, starts_line=None, is_jump_target=False)
|
|
]
|
|
|
|
|
|
class InstructionTests(BytecodeTestCase):
|
|
|
|
def test_default_first_line(self):
|
|
actual = dis.get_instructions(simple)
|
|
self.assertEqual(list(actual), expected_opinfo_simple)
|
|
|
|
def test_first_line_set_to_None(self):
|
|
actual = dis.get_instructions(simple, first_line=None)
|
|
self.assertEqual(list(actual), expected_opinfo_simple)
|
|
|
|
def test_outer(self):
|
|
actual = dis.get_instructions(outer, first_line=expected_outer_line)
|
|
self.assertEqual(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.assertEqual(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.assertEqual(list(actual), expected_opinfo_inner)
|
|
|
|
def test_jumpy(self):
|
|
actual = dis.get_instructions(jumpy, first_line=expected_jumpy_line)
|
|
self.assertEqual(list(actual), expected_opinfo_jumpy)
|
|
|
|
# get_instructions has its own tests above, so can rely on it to validate
|
|
# the object oriented API
|
|
class BytecodeTests(unittest.TestCase):
|
|
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.assertEqual(via_object, via_generator)
|
|
|
|
def test_explicit_first_line(self):
|
|
actual = dis.Bytecode(outer, first_line=expected_outer_line)
|
|
self.assertEqual(list(actual), expected_opinfo_outer)
|
|
|
|
def test_source_line_in_disassembly(self):
|
|
# Use the line in the source code
|
|
actual = dis.Bytecode(simple).dis()[:3]
|
|
expected = "{:>3}".format(simple.__code__.co_firstlineno)
|
|
self.assertEqual(actual, expected)
|
|
# Use an explicit first line number
|
|
actual = dis.Bytecode(simple, first_line=350).dis()[:3]
|
|
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.assertEqual(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):
|
|
tb = get_tb()
|
|
b = dis.Bytecode.from_traceback(tb)
|
|
self.assertEqual(b.dis(), dis_traceback)
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|