| # Minimal tests for dis module |
| |
| from test.support import run_unittest, captured_stdout |
| from test.bytecode_helper import BytecodeTestCase |
| import difflib |
| import unittest |
| import sys |
| import dis |
| import io |
| import re |
| import types |
| import contextlib |
| |
| 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 |
| |
| dis_c_instance_method = """\ |
| %-4d 0 LOAD_FAST 1 (x) |
| 3 LOAD_CONST 1 (1) |
| 6 COMPARE_OP 2 (==) |
| 9 LOAD_FAST 0 (self) |
| 12 STORE_ATTR 0 (x) |
| 15 LOAD_CONST 0 (None) |
| 18 RETURN_VALUE |
| """ % (_C.__init__.__code__.co_firstlineno + 1,) |
| |
| dis_c_instance_method_bytes = """\ |
| 0 LOAD_FAST 1 (1) |
| 3 LOAD_CONST 1 (1) |
| 6 COMPARE_OP 2 (==) |
| 9 LOAD_FAST 0 (0) |
| 12 STORE_ATTR 0 (0) |
| 15 LOAD_CONST 0 (0) |
| 18 RETURN_VALUE |
| """ |
| |
| def _f(a): |
| print(a) |
| return 1 |
| |
| dis_f = """\ |
| %-4d 0 LOAD_GLOBAL 0 (print) |
| 3 LOAD_FAST 0 (a) |
| 6 CALL_FUNCTION 1 (1 positional, 0 keyword pair) |
| 9 POP_TOP |
| |
| %-4d 10 LOAD_CONST 1 (1) |
| 13 RETURN_VALUE |
| """ % (_f.__code__.co_firstlineno + 1, |
| _f.__code__.co_firstlineno + 2) |
| |
| |
| dis_f_co_code = """\ |
| 0 LOAD_GLOBAL 0 (0) |
| 3 LOAD_FAST 0 (0) |
| 6 CALL_FUNCTION 1 (1 positional, 0 keyword pair) |
| 9 POP_TOP |
| 10 LOAD_CONST 1 (1) |
| 13 RETURN_VALUE |
| """ |
| |
| |
| def bug708901(): |
| for res in range(1, |
| 10): |
| pass |
| |
| dis_bug708901 = """\ |
| %-4d 0 SETUP_LOOP 23 (to 26) |
| 3 LOAD_GLOBAL 0 (range) |
| 6 LOAD_CONST 1 (1) |
| |
| %-4d 9 LOAD_CONST 2 (10) |
| 12 CALL_FUNCTION 2 (2 positional, 0 keyword pair) |
| 15 GET_ITER |
| >> 16 FOR_ITER 6 (to 25) |
| 19 STORE_FAST 0 (res) |
| |
| %-4d 22 JUMP_ABSOLUTE 16 |
| >> 25 POP_BLOCK |
| >> 26 LOAD_CONST 0 (None) |
| 29 RETURN_VALUE |
| """ % (bug708901.__code__.co_firstlineno + 1, |
| bug708901.__code__.co_firstlineno + 2, |
| bug708901.__code__.co_firstlineno + 3) |
| |
| |
| def bug1333982(x=[]): |
| assert 0, ([s for s in x] + |
| 1) |
| pass |
| |
| dis_bug1333982 = """\ |
| %3d 0 LOAD_CONST 1 (0) |
| 3 POP_JUMP_IF_TRUE 35 |
| 6 LOAD_GLOBAL 0 (AssertionError) |
| 9 LOAD_CONST 2 (<code object <listcomp> at 0x..., file "%s", line %d>) |
| 12 LOAD_CONST 3 ('bug1333982.<locals>.<listcomp>') |
| 15 MAKE_FUNCTION 0 |
| 18 LOAD_FAST 0 (x) |
| 21 GET_ITER |
| 22 CALL_FUNCTION 1 (1 positional, 0 keyword pair) |
| |
| %3d 25 LOAD_CONST 4 (1) |
| 28 BINARY_ADD |
| 29 CALL_FUNCTION 1 (1 positional, 0 keyword pair) |
| 32 RAISE_VARARGS 1 |
| |
| %3d >> 35 LOAD_CONST 0 (None) |
| 38 RETURN_VALUE |
| """ % (bug1333982.__code__.co_firstlineno + 1, |
| __file__, |
| bug1333982.__code__.co_firstlineno + 1, |
| bug1333982.__code__.co_firstlineno + 2, |
| bug1333982.__code__.co_firstlineno + 3) |
| |
| _BIG_LINENO_FORMAT = """\ |
| %3d 0 LOAD_GLOBAL 0 (spam) |
| 3 POP_TOP |
| 4 LOAD_CONST 0 (None) |
| 7 RETURN_VALUE |
| """ |
| |
| dis_module_expected_results = """\ |
| Disassembly of f: |
| 4 0 LOAD_CONST 0 (None) |
| 3 RETURN_VALUE |
| |
| Disassembly of g: |
| 5 0 LOAD_CONST 0 (None) |
| 3 RETURN_VALUE |
| |
| """ |
| |
| expr_str = "x + 1" |
| |
| dis_expr_str = """\ |
| 1 0 LOAD_NAME 0 (x) |
| 3 LOAD_CONST 0 (1) |
| 6 BINARY_ADD |
| 7 RETURN_VALUE |
| """ |
| |
| simple_stmt_str = "x = x + 1" |
| |
| dis_simple_stmt_str = """\ |
| 1 0 LOAD_NAME 0 (x) |
| 3 LOAD_CONST 0 (1) |
| 6 BINARY_ADD |
| 7 STORE_NAME 0 (x) |
| 10 LOAD_CONST 1 (None) |
| 13 RETURN_VALUE |
| """ |
| |
| compound_stmt_str = """\ |
| x = 0 |
| while 1: |
| x += 1""" |
| # Trailing newline has been deliberately omitted |
| |
| dis_compound_stmt_str = """\ |
| 1 0 LOAD_CONST 0 (0) |
| 3 STORE_NAME 0 (x) |
| |
| 2 6 SETUP_LOOP 14 (to 23) |
| |
| 3 >> 9 LOAD_NAME 0 (x) |
| 12 LOAD_CONST 1 (1) |
| 15 INPLACE_ADD |
| 16 STORE_NAME 0 (x) |
| 19 JUMP_ABSOLUTE 9 |
| 22 POP_BLOCK |
| >> 23 LOAD_CONST 2 (None) |
| 26 RETURN_VALUE |
| """ |
| |
| dis_traceback = """\ |
| %-4d 0 SETUP_EXCEPT 12 (to 15) |
| |
| %-4d 3 LOAD_CONST 1 (1) |
| 6 LOAD_CONST 2 (0) |
| --> 9 BINARY_TRUE_DIVIDE |
| 10 POP_TOP |
| 11 POP_BLOCK |
| 12 JUMP_FORWARD 46 (to 61) |
| |
| %-4d >> 15 DUP_TOP |
| 16 LOAD_GLOBAL 0 (Exception) |
| 19 COMPARE_OP 10 (exception match) |
| 22 POP_JUMP_IF_FALSE 60 |
| 25 POP_TOP |
| 26 STORE_FAST 0 (e) |
| 29 POP_TOP |
| 30 SETUP_FINALLY 14 (to 47) |
| |
| %-4d 33 LOAD_FAST 0 (e) |
| 36 LOAD_ATTR 1 (__traceback__) |
| 39 STORE_FAST 1 (tb) |
| 42 POP_BLOCK |
| 43 POP_EXCEPT |
| 44 LOAD_CONST 0 (None) |
| >> 47 LOAD_CONST 0 (None) |
| 50 STORE_FAST 0 (e) |
| 53 DELETE_FAST 0 (e) |
| 56 END_FINALLY |
| 57 JUMP_FORWARD 1 (to 61) |
| >> 60 END_FINALLY |
| |
| %-4d >> 61 LOAD_FAST 1 (tb) |
| 64 RETURN_VALUE |
| """ % (TRACEBACK_CODE.co_firstlineno + 1, |
| TRACEBACK_CODE.co_firstlineno + 2, |
| TRACEBACK_CODE.co_firstlineno + 3, |
| TRACEBACK_CODE.co_firstlineno + 4, |
| TRACEBACK_CODE.co_firstlineno + 5) |
| |
| class DisTests(unittest.TestCase): |
| |
| def get_disassembly(self, func, lasti=-1, wrapper=True): |
| # 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) |
| else: |
| dis.disassemble(func, lasti) |
| return output.getvalue() |
| |
| def get_disassemble_as_string(self, func, lasti=-1): |
| return self.get_disassembly(func, lasti, False) |
| |
| def strip_addresses(self, text): |
| return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text) |
| |
| def do_disassembly_test(self, func, expected): |
| got = self.get_disassembly(func) |
| if got != expected: |
| got = self.strip_addresses(got) |
| self.assertEqual(got, expected) |
| |
| def test_opmap(self): |
| self.assertEqual(dis.opmap["NOP"], 9) |
| 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) |
| self.assertEqual(dis.opmap["STORE_NAME"], dis.HAVE_ARGUMENT) |
| |
| def test_dis(self): |
| self.do_disassembly_test(_f, dis_f) |
| |
| 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_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, 5000, 10): |
| expected = _BIG_LINENO_FORMAT % (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(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_method(self): |
| self.do_disassembly_test(_C(1).__init__, dis_c_instance_method) |
| |
| def test_disassemble_method_bytes(self): |
| method_bytecode = _C(1).__init__.__code__.co_code |
| self.do_disassembly_test(method_bytecode, dis_c_instance_method_bytes) |
| |
| def test_dis_none(self): |
| try: |
| del sys.last_traceback |
| except AttributeError: |
| pass |
| self.assertRaises(RuntimeError, dis.dis, None) |
| |
| def test_dis_traceback(self): |
| try: |
| del sys.last_traceback |
| except AttributeError: |
| pass |
| |
| try: |
| 1/0 |
| except Exception as e: |
| tb = e.__traceback__ |
| sys.last_traceback = tb |
| |
| 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()) |
| |
| class DisWithFileTests(DisTests): |
| |
| # Run the tests again, using the file arg instead of print |
| def get_disassembly(self, func, lasti=-1, wrapper=True): |
| output = io.StringIO() |
| if wrapper: |
| dis.dis(func, file=output) |
| else: |
| dis.disassemble(func, lasti, file=output) |
| return output.getvalue() |
| |
| |
| |
| code_info_code_info = """\ |
| Name: code_info |
| Filename: (.*) |
| Argument count: 1 |
| Kw-only arguments: 0 |
| Number of locals: 1 |
| Stack size: 3 |
| Flags: OPTIMIZED, NEWLOCALS, NOFREE |
| Constants: |
| 0: %r |
| Names: |
| 0: _format_code_info |
| 1: _get_code_object |
| Variable names: |
| 0: x""" % (('Formatted details of methods, functions, or code.',) |
| if sys.flags.optimize < 2 else (None,)) |
| |
| @staticmethod |
| def tricky(x, y, z=True, *args, c, d, e=[], **kwds): |
| def f(c=c): |
| print(x, y, z, c, d, e, f) |
| yield x, y, z, c, d, e, f |
| |
| code_info_tricky = """\ |
| Name: tricky |
| Filename: (.*) |
| Argument count: 3 |
| Kw-only arguments: 3 |
| Number of locals: 8 |
| Stack size: 7 |
| Flags: OPTIMIZED, NEWLOCALS, VARARGS, VARKEYWORDS, GENERATOR |
| Constants: |
| 0: None |
| 1: <code object f at (.*), file "(.*)", line (.*)> |
| 2: 'tricky.<locals>.f' |
| Variable names: |
| 0: x |
| 1: y |
| 2: z |
| 3: c |
| 4: d |
| 5: e |
| 6: args |
| 7: kwds |
| Cell variables: |
| 0: [edfxyz] |
| 1: [edfxyz] |
| 2: [edfxyz] |
| 3: [edfxyz] |
| 4: [edfxyz] |
| 5: [edfxyz]""" |
| # 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 = """\ |
| Name: f |
| Filename: (.*) |
| Argument count: 1 |
| Kw-only arguments: 0 |
| Number of locals: 1 |
| Stack size: 8 |
| Flags: OPTIMIZED, NEWLOCALS, NESTED |
| Constants: |
| 0: None |
| Names: |
| 0: print |
| Variable names: |
| 0: c |
| Free variables: |
| 0: [edfxyz] |
| 1: [edfxyz] |
| 2: [edfxyz] |
| 3: [edfxyz] |
| 4: [edfxyz] |
| 5: [edfxyz]""" |
| |
| code_info_expr_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: 2 |
| Flags: NOFREE |
| Constants: |
| 0: 1 |
| Names: |
| 0: x""" |
| |
| code_info_simple_stmt_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: 2 |
| Flags: NOFREE |
| Constants: |
| 0: 1 |
| 1: None |
| Names: |
| 0: x""" |
| |
| code_info_compound_stmt_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: 2 |
| Flags: NOFREE |
| Constants: |
| 0: 0 |
| 1: 1 |
| 2: None |
| Names: |
| 0: x""" |
| |
| 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), |
| ] |
| |
| 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[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_outer_line) |
| #print('expected_opinfo_f = [\n ', |
| #',\n '.join(map(str, _instructions)), ',\n]', sep='') |
| #_instructions = dis.get_instructions(outer()(), first_line=expected_outer_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=74, argval=77, argrepr='to 77', 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=50, argval=66, argrepr='to 66', 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=47, argval=47, 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='JUMP_FORWARD', opcode=110, arg=0, argval=47, argrepr='to 47', offset=44, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=47, starts_line=7, is_jump_target=True), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=50, starts_line=None, is_jump_target=False), |
| Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=53, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=13, argval=13, argrepr='', offset=56, starts_line=None, is_jump_target=False), |
| Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=59, starts_line=8, is_jump_target=False), |
| Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=60, starts_line=None, is_jump_target=False), |
| Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=13, argval=13, argrepr='', offset=63, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=66, starts_line=None, is_jump_target=True), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=67, 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=70, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=73, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=76, starts_line=None, is_jump_target=False), |
| Instruction(opname='SETUP_LOOP', opcode=120, arg=74, argval=154, argrepr='to 154', offset=77, starts_line=11, is_jump_target=True), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=80, starts_line=None, is_jump_target=True), |
| Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=143, argval=143, argrepr='', offset=83, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=86, starts_line=12, is_jump_target=False), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=89, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=92, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=95, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=96, starts_line=13, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=99, starts_line=None, is_jump_target=False), |
| Instruction(opname='INPLACE_SUBTRACT', opcode=56, arg=None, argval=None, argrepr='', offset=102, starts_line=None, is_jump_target=False), |
| Instruction(opname='STORE_FAST', opcode=125, arg=0, argval='i', argrepr='i', offset=103, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=106, starts_line=14, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=3, argval=6, argrepr='6', offset=109, starts_line=None, is_jump_target=False), |
| Instruction(opname='COMPARE_OP', opcode=107, arg=4, argval='>', argrepr='>', offset=112, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=124, argval=124, argrepr='', offset=115, starts_line=None, is_jump_target=False), |
| Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=118, starts_line=15, is_jump_target=False), |
| Instruction(opname='JUMP_FORWARD', opcode=110, arg=0, argval=124, argrepr='to 124', offset=121, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=124, starts_line=16, is_jump_target=True), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=2, argval=4, argrepr='4', offset=127, starts_line=None, is_jump_target=False), |
| Instruction(opname='COMPARE_OP', opcode=107, arg=0, argval='<', argrepr='<', offset=130, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=80, argval=80, argrepr='', offset=133, starts_line=None, is_jump_target=False), |
| Instruction(opname='BREAK_LOOP', opcode=80, arg=None, argval=None, argrepr='', offset=136, starts_line=17, is_jump_target=False), |
| Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=137, starts_line=None, is_jump_target=False), |
| Instruction(opname='JUMP_ABSOLUTE', opcode=113, arg=80, argval=80, argrepr='', offset=140, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=143, starts_line=None, is_jump_target=True), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=144, 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=147, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=150, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=153, starts_line=None, is_jump_target=False), |
| Instruction(opname='SETUP_FINALLY', opcode=122, arg=72, argval=229, argrepr='to 229', offset=154, starts_line=20, is_jump_target=True), |
| Instruction(opname='SETUP_EXCEPT', opcode=121, arg=12, argval=172, argrepr='to 172', offset=157, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=5, argval=1, argrepr='1', offset=160, starts_line=21, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=7, argval=0, argrepr='0', offset=163, starts_line=None, is_jump_target=False), |
| Instruction(opname='BINARY_TRUE_DIVIDE', opcode=27, arg=None, argval=None, argrepr='', offset=166, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=167, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=168, starts_line=None, is_jump_target=False), |
| Instruction(opname='JUMP_FORWARD', opcode=110, arg=28, argval=200, argrepr='to 200', offset=169, starts_line=None, is_jump_target=False), |
| Instruction(opname='DUP_TOP', opcode=4, arg=None, argval=None, argrepr='', offset=172, starts_line=22, is_jump_target=True), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=2, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=173, starts_line=None, is_jump_target=False), |
| Instruction(opname='COMPARE_OP', opcode=107, arg=10, argval='exception match', argrepr='exception match', offset=176, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_JUMP_IF_FALSE', opcode=114, arg=199, argval=199, argrepr='', 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), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=183, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=184, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=185, 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=188, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=191, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=194, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_EXCEPT', opcode=89, arg=None, argval=None, argrepr='', offset=195, starts_line=None, is_jump_target=False), |
| Instruction(opname='JUMP_FORWARD', opcode=110, arg=26, argval=225, argrepr='to 225', offset=196, starts_line=None, is_jump_target=False), |
| Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=199, starts_line=None, is_jump_target=True), |
| Instruction(opname='LOAD_FAST', opcode=124, arg=0, argval='i', argrepr='i', offset=200, starts_line=25, is_jump_target=True), |
| Instruction(opname='SETUP_WITH', opcode=143, arg=17, argval=223, argrepr='to 223', offset=203, starts_line=None, is_jump_target=False), |
| Instruction(opname='STORE_FAST', opcode=125, arg=1, argval='dodgy', argrepr='dodgy', offset=206, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=209, starts_line=26, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=9, argval='Never reach this', argrepr="'Never reach this'", offset=212, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=215, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=218, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=219, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=220, starts_line=None, is_jump_target=False), |
| Instruction(opname='WITH_CLEANUP', opcode=81, arg=None, argval=None, argrepr='', offset=223, starts_line=None, is_jump_target=True), |
| Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=224, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_BLOCK', opcode=87, arg=None, argval=None, argrepr='', offset=225, starts_line=None, is_jump_target=True), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=226, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_GLOBAL', opcode=116, arg=1, argval='print', argrepr='print', offset=229, 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=232, starts_line=None, is_jump_target=False), |
| Instruction(opname='CALL_FUNCTION', opcode=131, arg=1, argval=1, argrepr='1 positional, 0 keyword pair', offset=235, starts_line=None, is_jump_target=False), |
| Instruction(opname='POP_TOP', opcode=1, arg=None, argval=None, argrepr='', offset=238, starts_line=None, is_jump_target=False), |
| Instruction(opname='END_FINALLY', opcode=88, arg=None, argval=None, argrepr='', offset=239, starts_line=None, is_jump_target=False), |
| Instruction(opname='LOAD_CONST', opcode=100, arg=0, argval=None, argrepr='None', offset=240, starts_line=None, is_jump_target=False), |
| Instruction(opname='RETURN_VALUE', opcode=83, arg=None, argval=None, argrepr='', offset=243, 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() |