| # Minimal tests for dis module |
| |
| import ast |
| import contextlib |
| import dis |
| import functools |
| import io |
| import itertools |
| import opcode |
| import re |
| import sys |
| import tempfile |
| import textwrap |
| import types |
| import unittest |
| from test.support import (captured_stdout, requires_debug_ranges, |
| requires_specialization, cpython_only, |
| os_helper, import_helper, reset_code) |
| from test.support.bytecode_helper import BytecodeTestCase |
| |
| |
| CACHE = dis.opmap["CACHE"] |
| |
| def get_tb(): |
| def _error(): |
| try: |
| 1 / 0 |
| except Exception as e: |
| tb = e.__traceback__ |
| return tb |
| |
| tb = _error() |
| while tb.tb_next: |
| tb = tb.tb_next |
| return tb |
| |
| TRACEBACK_CODE = get_tb().tb_frame.f_code |
| |
| class _C: |
| def __init__(self, x): |
| self.x = x == 1 |
| |
| @staticmethod |
| def sm(x): |
| x = x == 1 |
| |
| @classmethod |
| def cm(cls, x): |
| cls.x = x == 1 |
| |
| dis_c_instance_method = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_FAST_BORROW 1 (x) |
| LOAD_SMALL_INT 1 |
| COMPARE_OP 72 (==) |
| LOAD_FAST_BORROW 0 (self) |
| STORE_ATTR 0 (x) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ % (_C.__init__.__code__.co_firstlineno, _C.__init__.__code__.co_firstlineno + 1,) |
| |
| dis_c_instance_method_bytes = """\ |
| RESUME 0 |
| LOAD_FAST_BORROW 1 |
| LOAD_SMALL_INT 1 |
| COMPARE_OP 72 (==) |
| LOAD_FAST_BORROW 0 |
| STORE_ATTR 0 |
| LOAD_CONST 1 |
| RETURN_VALUE |
| """ |
| |
| dis_c_class_method = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_FAST_BORROW 1 (x) |
| LOAD_SMALL_INT 1 |
| COMPARE_OP 72 (==) |
| LOAD_FAST_BORROW 0 (cls) |
| STORE_ATTR 0 (x) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ % (_C.cm.__code__.co_firstlineno, _C.cm.__code__.co_firstlineno + 2,) |
| |
| dis_c_static_method = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_FAST_BORROW 0 (x) |
| LOAD_SMALL_INT 1 |
| COMPARE_OP 72 (==) |
| STORE_FAST 0 (x) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ % (_C.sm.__code__.co_firstlineno, _C.sm.__code__.co_firstlineno + 2,) |
| |
| # Class disassembling info has an extra newline at end. |
| dis_c = """\ |
| Disassembly of %s: |
| %s |
| Disassembly of %s: |
| %s |
| Disassembly of %s: |
| %s |
| """ % (_C.__init__.__name__, dis_c_instance_method, |
| _C.cm.__name__, dis_c_class_method, |
| _C.sm.__name__, dis_c_static_method) |
| |
| def _f(a): |
| print(a) |
| return 1 |
| |
| dis_f = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_GLOBAL 1 (print + NULL) |
| LOAD_FAST_BORROW 0 (a) |
| CALL 1 |
| POP_TOP |
| |
| %3d LOAD_SMALL_INT 1 |
| RETURN_VALUE |
| """ % (_f.__code__.co_firstlineno, |
| _f.__code__.co_firstlineno + 1, |
| _f.__code__.co_firstlineno + 2) |
| |
| dis_f_with_offsets = """\ |
| %3d 0 RESUME 0 |
| |
| %3d 2 LOAD_GLOBAL 1 (print + NULL) |
| 12 LOAD_FAST_BORROW 0 (a) |
| 14 CALL 1 |
| 22 POP_TOP |
| |
| %3d 24 LOAD_SMALL_INT 1 |
| 26 RETURN_VALUE |
| """ % (_f.__code__.co_firstlineno, |
| _f.__code__.co_firstlineno + 1, |
| _f.__code__.co_firstlineno + 2) |
| |
| dis_f_with_positions_format = f"""\ |
| %-14s RESUME 0 |
| |
| %-14s LOAD_GLOBAL 1 (print + NULL) |
| %-14s LOAD_FAST_BORROW 0 (a) |
| %-14s CALL 1 |
| %-14s POP_TOP |
| |
| %-14s LOAD_SMALL_INT 1 |
| %-14s RETURN_VALUE |
| """ |
| |
| dis_f_co_code = """\ |
| RESUME 0 |
| LOAD_GLOBAL 1 |
| LOAD_FAST_BORROW 0 |
| CALL 1 |
| POP_TOP |
| LOAD_SMALL_INT 1 |
| RETURN_VALUE |
| """ |
| |
| def bug708901(): |
| for res in range(1, |
| 10): |
| pass |
| |
| dis_bug708901 = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_GLOBAL 1 (range + NULL) |
| LOAD_SMALL_INT 1 |
| |
| %3d LOAD_SMALL_INT 10 |
| |
| %3d CALL 2 |
| GET_ITER |
| L1: FOR_ITER 3 (to L2) |
| STORE_FAST 0 (res) |
| |
| %3d JUMP_BACKWARD 5 (to L1) |
| |
| %3d L2: END_FOR |
| POP_ITER |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ % (bug708901.__code__.co_firstlineno, |
| bug708901.__code__.co_firstlineno + 1, |
| bug708901.__code__.co_firstlineno + 2, |
| bug708901.__code__.co_firstlineno + 1, |
| bug708901.__code__.co_firstlineno + 3, |
| bug708901.__code__.co_firstlineno + 1) |
| |
| |
| def bug1333982(x=[]): |
| assert 0, ((s for s in x) + |
| 1) |
| pass |
| |
| dis_bug1333982 = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_COMMON_CONSTANT 0 (AssertionError) |
| LOAD_CONST 1 (<code object <genexpr> at 0x..., file "%s", line %d>) |
| MAKE_FUNCTION |
| LOAD_FAST_BORROW 0 (x) |
| CALL 0 |
| |
| %3d LOAD_SMALL_INT 1 |
| |
| %3d BINARY_OP 0 (+) |
| CALL 0 |
| RAISE_VARARGS 1 |
| """ % (bug1333982.__code__.co_firstlineno, |
| bug1333982.__code__.co_firstlineno + 1, |
| __file__, |
| bug1333982.__code__.co_firstlineno + 1, |
| bug1333982.__code__.co_firstlineno + 2, |
| bug1333982.__code__.co_firstlineno + 1) |
| |
| |
| def bug42562(): |
| pass |
| |
| |
| # Set line number for 'pass' to None |
| bug42562.__code__ = bug42562.__code__.replace(co_linetable=b'\xf8') |
| |
| |
| dis_bug42562 = """\ |
| RESUME 0 |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| """ |
| |
| # Extended arg followed by NOP |
| code_bug_45757 = bytes([ |
| opcode.opmap['EXTENDED_ARG'], 0x01, |
| opcode.opmap['NOP'], 0xFF, |
| opcode.opmap['EXTENDED_ARG'], 0x01, |
| opcode.opmap['LOAD_CONST'], 0x29, |
| opcode.opmap['RETURN_VALUE'], 0x00, |
| ]) |
| |
| dis_bug_45757 = """\ |
| EXTENDED_ARG 1 |
| NOP |
| EXTENDED_ARG 1 |
| LOAD_CONST 297 |
| RETURN_VALUE |
| """ |
| |
| # [255, 255, 255, 252] is -4 in a 4 byte signed integer |
| bug46724 = bytes([ |
| opcode.EXTENDED_ARG, 255, |
| opcode.EXTENDED_ARG, 255, |
| opcode.EXTENDED_ARG, 255, |
| opcode.opmap['JUMP_FORWARD'], 252, |
| ]) |
| |
| |
| dis_bug46724 = """\ |
| L1: EXTENDED_ARG 255 |
| EXTENDED_ARG 65535 |
| EXTENDED_ARG 16777215 |
| JUMP_FORWARD -4 (to L1) |
| """ |
| |
| def func_w_kwargs(a, b, **c): |
| pass |
| |
| def wrap_func_w_kwargs(): |
| func_w_kwargs(1, 2, c=5) |
| |
| dis_kw_names = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_GLOBAL 1 (func_w_kwargs + NULL) |
| LOAD_SMALL_INT 1 |
| LOAD_SMALL_INT 2 |
| LOAD_SMALL_INT 5 |
| LOAD_CONST 1 (('c',)) |
| CALL_KW 3 |
| POP_TOP |
| LOAD_CONST 2 (None) |
| RETURN_VALUE |
| """ % (wrap_func_w_kwargs.__code__.co_firstlineno, |
| wrap_func_w_kwargs.__code__.co_firstlineno + 1) |
| |
| dis_intrinsic_1_2 = """\ |
| 0 RESUME 0 |
| |
| 1 LOAD_SMALL_INT 0 |
| LOAD_CONST 1 (('*',)) |
| IMPORT_NAME 0 (math) |
| CALL_INTRINSIC_1 2 (INTRINSIC_IMPORT_STAR) |
| POP_TOP |
| LOAD_CONST 2 (None) |
| RETURN_VALUE |
| """ |
| |
| dis_intrinsic_1_5 = """\ |
| 0 RESUME 0 |
| |
| 1 LOAD_NAME 0 (a) |
| CALL_INTRINSIC_1 5 (INTRINSIC_UNARY_POSITIVE) |
| RETURN_VALUE |
| """ |
| |
| dis_intrinsic_1_6 = """\ |
| 0 RESUME 0 |
| |
| 1 BUILD_LIST 0 |
| LOAD_NAME 0 (a) |
| LIST_EXTEND 1 |
| CALL_INTRINSIC_1 6 (INTRINSIC_LIST_TO_TUPLE) |
| RETURN_VALUE |
| """ |
| |
| _BIG_LINENO_FORMAT = """\ |
| 1 RESUME 0 |
| |
| %3d LOAD_GLOBAL 0 (spam) |
| POP_TOP |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| """ |
| |
| _BIG_LINENO_FORMAT2 = """\ |
| 1 RESUME 0 |
| |
| %4d LOAD_GLOBAL 0 (spam) |
| POP_TOP |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| """ |
| |
| dis_module_expected_results = """\ |
| Disassembly of f: |
| 4 RESUME 0 |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| |
| Disassembly of g: |
| 5 RESUME 0 |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| |
| """ |
| |
| expr_str = "x + 1" |
| |
| dis_expr_str = """\ |
| 0 RESUME 0 |
| |
| 1 LOAD_NAME 0 (x) |
| LOAD_SMALL_INT 1 |
| BINARY_OP 0 (+) |
| RETURN_VALUE |
| """ |
| |
| simple_stmt_str = "x = x + 1" |
| |
| dis_simple_stmt_str = """\ |
| 0 RESUME 0 |
| |
| 1 LOAD_NAME 0 (x) |
| LOAD_SMALL_INT 1 |
| BINARY_OP 0 (+) |
| STORE_NAME 0 (x) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ |
| |
| annot_stmt_str = """\ |
| |
| x: int = 1 |
| y: fun(1) |
| lst[fun(0)]: int = 1 |
| """ |
| # leading newline is for a reason (tests lineno) |
| |
| dis_annot_stmt_str = """\ |
| -- MAKE_CELL 0 (__conditional_annotations__) |
| |
| 0 RESUME 0 |
| |
| 2 LOAD_CONST 1 (<code object __annotate__ at 0x..., file "<dis>", line 2>) |
| MAKE_FUNCTION |
| STORE_NAME 4 (__annotate__) |
| BUILD_SET 0 |
| STORE_NAME 0 (__conditional_annotations__) |
| LOAD_SMALL_INT 1 |
| STORE_NAME 1 (x) |
| LOAD_NAME 0 (__conditional_annotations__) |
| LOAD_SMALL_INT 0 |
| SET_ADD 1 |
| POP_TOP |
| |
| 3 LOAD_NAME 0 (__conditional_annotations__) |
| LOAD_SMALL_INT 1 |
| SET_ADD 1 |
| POP_TOP |
| |
| 4 LOAD_SMALL_INT 1 |
| LOAD_NAME 2 (lst) |
| LOAD_NAME 3 (fun) |
| PUSH_NULL |
| LOAD_SMALL_INT 0 |
| CALL 1 |
| STORE_SUBSCR |
| LOAD_CONST 2 (None) |
| RETURN_VALUE |
| """ |
| |
| fn_with_annotate_str = """ |
| def foo(a: int, b: str) -> str: |
| return a * b |
| """ |
| |
| dis_fn_with_annotate_str = """\ |
| 0 RESUME 0 |
| |
| 2 LOAD_CONST 0 (<code object __annotate__ at 0x..., file "<dis>", line 2>) |
| MAKE_FUNCTION |
| LOAD_CONST 1 (<code object foo at 0x..., file "<dis>", line 2>) |
| MAKE_FUNCTION |
| SET_FUNCTION_ATTRIBUTE 16 (annotate) |
| STORE_NAME 0 (foo) |
| LOAD_CONST 2 (None) |
| RETURN_VALUE |
| """ |
| |
| compound_stmt_str = """\ |
| x = 0 |
| while 1: |
| x += 1""" |
| # Trailing newline has been deliberately omitted |
| |
| dis_compound_stmt_str = """\ |
| 0 RESUME 0 |
| |
| 1 LOAD_SMALL_INT 0 |
| STORE_NAME 0 (x) |
| |
| 2 L1: NOP |
| |
| 3 LOAD_NAME 0 (x) |
| LOAD_SMALL_INT 1 |
| BINARY_OP 13 (+=) |
| STORE_NAME 0 (x) |
| JUMP_BACKWARD 12 (to L1) |
| """ |
| |
| dis_traceback = """\ |
| %4d RESUME 0 |
| |
| %4d NOP |
| |
| %4d L1: LOAD_SMALL_INT 1 |
| LOAD_SMALL_INT 0 |
| --> BINARY_OP 11 (/) |
| POP_TOP |
| |
| %4d L2: LOAD_FAST_CHECK 1 (tb) |
| RETURN_VALUE |
| |
| -- L3: PUSH_EXC_INFO |
| |
| %4d LOAD_GLOBAL 0 (Exception) |
| CHECK_EXC_MATCH |
| POP_JUMP_IF_FALSE 24 (to L9) |
| L4: NOT_TAKEN |
| L5: STORE_FAST 0 (e) |
| |
| %4d L6: LOAD_FAST 0 (e) |
| LOAD_ATTR 2 (__traceback__) |
| STORE_FAST 1 (tb) |
| L7: POP_EXCEPT |
| LOAD_CONST 1 (None) |
| STORE_FAST 0 (e) |
| DELETE_FAST 0 (e) |
| |
| %4d LOAD_FAST 1 (tb) |
| RETURN_VALUE |
| |
| -- L8: LOAD_CONST 1 (None) |
| STORE_FAST 0 (e) |
| DELETE_FAST 0 (e) |
| RERAISE 1 |
| |
| %4d L9: RERAISE 0 |
| |
| -- L10: COPY 3 |
| POP_EXCEPT |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L2 -> L3 [0] |
| L3 to L4 -> L10 [1] lasti |
| L5 to L6 -> L10 [1] lasti |
| L6 to L7 -> L8 [1] lasti |
| L8 to L10 -> L10 [1] lasti |
| """ % (TRACEBACK_CODE.co_firstlineno, |
| TRACEBACK_CODE.co_firstlineno + 1, |
| TRACEBACK_CODE.co_firstlineno + 2, |
| TRACEBACK_CODE.co_firstlineno + 5, |
| TRACEBACK_CODE.co_firstlineno + 3, |
| TRACEBACK_CODE.co_firstlineno + 4, |
| TRACEBACK_CODE.co_firstlineno + 5, |
| TRACEBACK_CODE.co_firstlineno + 3) |
| |
| def _fstring(a, b, c, d): |
| return f'{a} {b:4} {c!r} {d!r:4}' |
| |
| dis_fstring = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_FAST_BORROW 0 (a) |
| FORMAT_SIMPLE |
| LOAD_CONST 0 (' ') |
| LOAD_FAST_BORROW 1 (b) |
| LOAD_CONST 1 ('4') |
| FORMAT_WITH_SPEC |
| LOAD_CONST 0 (' ') |
| LOAD_FAST_BORROW 2 (c) |
| CONVERT_VALUE 2 (repr) |
| FORMAT_SIMPLE |
| LOAD_CONST 0 (' ') |
| LOAD_FAST_BORROW 3 (d) |
| CONVERT_VALUE 2 (repr) |
| LOAD_CONST 1 ('4') |
| FORMAT_WITH_SPEC |
| BUILD_STRING 7 |
| RETURN_VALUE |
| """ % (_fstring.__code__.co_firstlineno, _fstring.__code__.co_firstlineno + 1) |
| |
| def _with(c): |
| with c: |
| x = 1 |
| y = 2 |
| |
| dis_with = """\ |
| %4d RESUME 0 |
| |
| %4d LOAD_FAST_BORROW 0 (c) |
| COPY 1 |
| LOAD_SPECIAL 1 (__exit__) |
| SWAP 2 |
| SWAP 3 |
| LOAD_SPECIAL 0 (__enter__) |
| CALL 0 |
| L1: POP_TOP |
| |
| %4d LOAD_SMALL_INT 1 |
| STORE_FAST 1 (x) |
| |
| %4d L2: LOAD_CONST 1 (None) |
| LOAD_CONST 1 (None) |
| LOAD_CONST 1 (None) |
| CALL 3 |
| POP_TOP |
| |
| %4d LOAD_SMALL_INT 2 |
| STORE_FAST 2 (y) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| |
| %4d L3: PUSH_EXC_INFO |
| WITH_EXCEPT_START |
| TO_BOOL |
| POP_JUMP_IF_TRUE 2 (to L6) |
| L4: NOT_TAKEN |
| L5: RERAISE 2 |
| L6: POP_TOP |
| L7: POP_EXCEPT |
| POP_TOP |
| POP_TOP |
| POP_TOP |
| |
| %4d LOAD_SMALL_INT 2 |
| STORE_FAST 2 (y) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| |
| -- L8: COPY 3 |
| POP_EXCEPT |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L2 -> L3 [2] lasti |
| L3 to L4 -> L8 [4] lasti |
| L5 to L7 -> L8 [4] lasti |
| """ % (_with.__code__.co_firstlineno, |
| _with.__code__.co_firstlineno + 1, |
| _with.__code__.co_firstlineno + 2, |
| _with.__code__.co_firstlineno + 1, |
| _with.__code__.co_firstlineno + 3, |
| _with.__code__.co_firstlineno + 1, |
| _with.__code__.co_firstlineno + 3, |
| ) |
| |
| async def _asyncwith(c): |
| async with c: |
| x = 1 |
| y = 2 |
| |
| dis_asyncwith = """\ |
| %4d RETURN_GENERATOR |
| POP_TOP |
| L1: RESUME 0 |
| |
| %4d LOAD_FAST 0 (c) |
| COPY 1 |
| LOAD_SPECIAL 3 (__aexit__) |
| SWAP 2 |
| SWAP 3 |
| LOAD_SPECIAL 2 (__aenter__) |
| CALL 0 |
| GET_AWAITABLE 1 |
| LOAD_CONST 0 (None) |
| L2: SEND 3 (to L5) |
| L3: YIELD_VALUE 1 |
| L4: RESUME 3 |
| JUMP_BACKWARD_NO_INTERRUPT 5 (to L2) |
| L5: END_SEND |
| L6: POP_TOP |
| |
| %4d LOAD_SMALL_INT 1 |
| STORE_FAST 1 (x) |
| |
| %4d L7: LOAD_CONST 0 (None) |
| LOAD_CONST 0 (None) |
| LOAD_CONST 0 (None) |
| CALL 3 |
| GET_AWAITABLE 2 |
| LOAD_CONST 0 (None) |
| L8: SEND 3 (to L11) |
| L9: YIELD_VALUE 1 |
| L10: RESUME 3 |
| JUMP_BACKWARD_NO_INTERRUPT 5 (to L8) |
| L11: END_SEND |
| POP_TOP |
| |
| %4d LOAD_SMALL_INT 2 |
| STORE_FAST 2 (y) |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| |
| %4d L12: CLEANUP_THROW |
| L13: JUMP_BACKWARD_NO_INTERRUPT 26 (to L5) |
| L14: CLEANUP_THROW |
| L15: JUMP_BACKWARD_NO_INTERRUPT 10 (to L11) |
| L16: PUSH_EXC_INFO |
| WITH_EXCEPT_START |
| GET_AWAITABLE 2 |
| LOAD_CONST 0 (None) |
| L17: SEND 4 (to L21) |
| L18: YIELD_VALUE 1 |
| L19: RESUME 3 |
| JUMP_BACKWARD_NO_INTERRUPT 5 (to L17) |
| L20: CLEANUP_THROW |
| L21: END_SEND |
| TO_BOOL |
| POP_JUMP_IF_TRUE 2 (to L24) |
| L22: NOT_TAKEN |
| L23: RERAISE 2 |
| L24: POP_TOP |
| L25: POP_EXCEPT |
| POP_TOP |
| POP_TOP |
| POP_TOP |
| |
| %4d LOAD_SMALL_INT 2 |
| STORE_FAST 2 (y) |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| |
| -- L26: COPY 3 |
| POP_EXCEPT |
| RERAISE 1 |
| L27: CALL_INTRINSIC_1 3 (INTRINSIC_STOPITERATION_ERROR) |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L3 -> L27 [0] lasti |
| L3 to L4 -> L12 [4] |
| L4 to L6 -> L27 [0] lasti |
| L6 to L7 -> L16 [2] lasti |
| L7 to L9 -> L27 [0] lasti |
| L9 to L10 -> L14 [2] |
| L10 to L13 -> L27 [0] lasti |
| L14 to L15 -> L27 [0] lasti |
| L16 to L18 -> L26 [4] lasti |
| L18 to L19 -> L20 [7] |
| L19 to L22 -> L26 [4] lasti |
| L23 to L25 -> L26 [4] lasti |
| L25 to L27 -> L27 [0] lasti |
| """ % (_asyncwith.__code__.co_firstlineno, |
| _asyncwith.__code__.co_firstlineno + 1, |
| _asyncwith.__code__.co_firstlineno + 2, |
| _asyncwith.__code__.co_firstlineno + 1, |
| _asyncwith.__code__.co_firstlineno + 3, |
| _asyncwith.__code__.co_firstlineno + 1, |
| _asyncwith.__code__.co_firstlineno + 3, |
| ) |
| |
| |
| def _tryfinally(a, b): |
| try: |
| return a |
| finally: |
| b() |
| |
| def _tryfinallyconst(b): |
| try: |
| return 1 |
| finally: |
| b() |
| |
| dis_tryfinally = """\ |
| %4d RESUME 0 |
| |
| %4d NOP |
| |
| %4d L1: LOAD_FAST_BORROW 0 (a) |
| |
| %4d L2: LOAD_FAST_BORROW 1 (b) |
| PUSH_NULL |
| CALL 0 |
| POP_TOP |
| RETURN_VALUE |
| |
| -- L3: PUSH_EXC_INFO |
| |
| %4d LOAD_FAST 1 (b) |
| PUSH_NULL |
| CALL 0 |
| POP_TOP |
| RERAISE 0 |
| |
| -- L4: COPY 3 |
| POP_EXCEPT |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L2 -> L3 [0] |
| L3 to L4 -> L4 [1] lasti |
| """ % (_tryfinally.__code__.co_firstlineno, |
| _tryfinally.__code__.co_firstlineno + 1, |
| _tryfinally.__code__.co_firstlineno + 2, |
| _tryfinally.__code__.co_firstlineno + 4, |
| _tryfinally.__code__.co_firstlineno + 4, |
| ) |
| |
| dis_tryfinallyconst = """\ |
| %4d RESUME 0 |
| |
| %4d NOP |
| |
| %4d NOP |
| |
| %4d LOAD_FAST_BORROW 0 (b) |
| PUSH_NULL |
| CALL 0 |
| POP_TOP |
| LOAD_SMALL_INT 1 |
| RETURN_VALUE |
| |
| -- L1: PUSH_EXC_INFO |
| |
| %4d LOAD_FAST 0 (b) |
| PUSH_NULL |
| CALL 0 |
| POP_TOP |
| RERAISE 0 |
| |
| -- L2: COPY 3 |
| POP_EXCEPT |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L2 -> L2 [1] lasti |
| """ % (_tryfinallyconst.__code__.co_firstlineno, |
| _tryfinallyconst.__code__.co_firstlineno + 1, |
| _tryfinallyconst.__code__.co_firstlineno + 2, |
| _tryfinallyconst.__code__.co_firstlineno + 4, |
| _tryfinallyconst.__code__.co_firstlineno + 4, |
| ) |
| |
| def _g(x): |
| yield x |
| |
| async def _ag(x): |
| yield x |
| |
| async def _co(x): |
| async for item in _ag(x): |
| pass |
| |
| def _h(y): |
| def foo(x): |
| '''funcdoc''' |
| return list(x + z for z in y) |
| return foo |
| |
| dis_nested_0 = """\ |
| -- MAKE_CELL 0 (y) |
| |
| %4d RESUME 0 |
| |
| %4d LOAD_FAST_BORROW 0 (y) |
| BUILD_TUPLE 1 |
| LOAD_CONST 0 (<code object foo at 0x..., file "%s", line %d>) |
| MAKE_FUNCTION |
| SET_FUNCTION_ATTRIBUTE 8 (closure) |
| STORE_FAST 1 (foo) |
| |
| %4d LOAD_FAST_BORROW 1 (foo) |
| RETURN_VALUE |
| """ % (_h.__code__.co_firstlineno, |
| _h.__code__.co_firstlineno + 1, |
| __file__, |
| _h.__code__.co_firstlineno + 1, |
| _h.__code__.co_firstlineno + 4, |
| ) |
| |
| dis_nested_1 = """%s |
| Disassembly of <code object foo at 0x..., file "%s", line %d>: |
| -- COPY_FREE_VARS 1 |
| MAKE_CELL 0 (x) |
| |
| %4d RESUME 0 |
| |
| %4d LOAD_GLOBAL 1 (list + NULL) |
| LOAD_FAST_BORROW 0 (x) |
| BUILD_TUPLE 1 |
| LOAD_CONST %d (<code object <genexpr> at 0x..., file "%s", line %d>) |
| MAKE_FUNCTION |
| SET_FUNCTION_ATTRIBUTE 8 (closure) |
| LOAD_DEREF 1 (y) |
| CALL 0 |
| CALL 1 |
| RETURN_VALUE |
| """ % (dis_nested_0, |
| __file__, |
| _h.__code__.co_firstlineno + 1, |
| _h.__code__.co_firstlineno + 1, |
| _h.__code__.co_firstlineno + 3, |
| 1 if __debug__ else 0, |
| __file__, |
| _h.__code__.co_firstlineno + 3, |
| ) |
| |
| dis_nested_2 = """%s |
| Disassembly of <code object <genexpr> at 0x..., file "%s", line %d>: |
| -- COPY_FREE_VARS 1 |
| |
| %4d RETURN_GENERATOR |
| POP_TOP |
| L1: RESUME 0 |
| LOAD_FAST 0 (.0) |
| GET_ITER |
| L2: FOR_ITER 14 (to L3) |
| STORE_FAST 1 (z) |
| LOAD_DEREF 2 (x) |
| LOAD_FAST_BORROW 1 (z) |
| BINARY_OP 0 (+) |
| YIELD_VALUE 0 |
| RESUME 5 |
| POP_TOP |
| JUMP_BACKWARD 16 (to L2) |
| L3: END_FOR |
| POP_ITER |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| |
| -- L4: CALL_INTRINSIC_1 3 (INTRINSIC_STOPITERATION_ERROR) |
| RERAISE 1 |
| ExceptionTable: |
| L1 to L4 -> L4 [0] lasti |
| """ % (dis_nested_1, |
| __file__, |
| _h.__code__.co_firstlineno + 3, |
| _h.__code__.co_firstlineno + 3, |
| ) |
| |
| def load_test(x, y=0): |
| a, b = x, y |
| return a, b |
| |
| dis_load_test_quickened_code = """\ |
| %3d RESUME_CHECK 0 |
| |
| %3d LOAD_FAST_LOAD_FAST 1 (x, y) |
| STORE_FAST_STORE_FAST 50 (b, a) |
| |
| %3d LOAD_FAST_BORROW_LOAD_FAST_BORROW 35 (a, b) |
| BUILD_TUPLE 2 |
| RETURN_VALUE |
| """ % (load_test.__code__.co_firstlineno, |
| load_test.__code__.co_firstlineno + 1, |
| load_test.__code__.co_firstlineno + 2) |
| |
| def loop_test(): |
| for i in [1, 2, 3] * 3: |
| load_test(i) |
| |
| dis_loop_test_quickened_code = """\ |
| %3d RESUME_CHECK 0 |
| |
| %3d BUILD_LIST 0 |
| LOAD_CONST 2 ((1, 2, 3)) |
| LIST_EXTEND 1 |
| LOAD_SMALL_INT 3 |
| BINARY_OP 5 (*) |
| GET_ITER |
| L1: FOR_ITER_LIST 14 (to L2) |
| STORE_FAST 0 (i) |
| |
| %3d LOAD_GLOBAL_MODULE 1 (load_test + NULL) |
| LOAD_FAST_BORROW 0 (i) |
| CALL_PY_GENERAL 1 |
| POP_TOP |
| JUMP_BACKWARD_{: <6} 16 (to L1) |
| |
| %3d L2: END_FOR |
| POP_ITER |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """ % (loop_test.__code__.co_firstlineno, |
| loop_test.__code__.co_firstlineno + 1, |
| loop_test.__code__.co_firstlineno + 2, |
| loop_test.__code__.co_firstlineno + 1,) |
| |
| def extended_arg_quick(): |
| *_, _ = ... |
| |
| dis_extended_arg_quick_code = """\ |
| %3d RESUME 0 |
| |
| %3d LOAD_CONST 0 (Ellipsis) |
| EXTENDED_ARG 1 |
| UNPACK_EX 256 |
| POP_TOP |
| STORE_FAST 0 (_) |
| LOAD_CONST 1 (None) |
| RETURN_VALUE |
| """% (extended_arg_quick.__code__.co_firstlineno, |
| extended_arg_quick.__code__.co_firstlineno + 1,) |
| |
| class DisTestBase(unittest.TestCase): |
| "Common utilities for DisTests and TestDisTraceback" |
| |
| def strip_addresses(self, text): |
| return re.sub(r'\b0x[0-9A-Fa-f]+\b', '0x...', text) |
| |
| def assert_exception_table_increasing(self, lines): |
| prev_start, prev_end = -1, -1 |
| count = 0 |
| for line in lines: |
| m = re.match(r' L(\d+) to L(\d+) -> L\d+ \[\d+\]', line) |
| start, end = [int(g) for g in m.groups()] |
| self.assertGreaterEqual(end, start) |
| self.assertGreaterEqual(start, prev_end) |
| prev_start, prev_end = start, end |
| count += 1 |
| return count |
| |
| def do_disassembly_compare(self, got, expected): |
| if got != expected: |
| got = self.strip_addresses(got) |
| self.assertEqual(got, expected) |
| |
| |
| class DisTests(DisTestBase): |
| |
| maxDiff = None |
| |
| def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs): |
| # We want to test the default printing behaviour, not the file arg |
| output = io.StringIO() |
| with contextlib.redirect_stdout(output): |
| if wrapper: |
| dis.dis(func, **kwargs) |
| else: |
| dis.disassemble(func, lasti, **kwargs) |
| return output.getvalue() |
| |
| def get_disassemble_as_string(self, func, lasti=-1): |
| return self.get_disassembly(func, lasti, False) |
| |
| def do_disassembly_test(self, func, expected, **kwargs): |
| self.maxDiff = None |
| got = self.get_disassembly(func, depth=0, **kwargs) |
| self.do_disassembly_compare(got, expected) |
| # Add checks for dis.disco |
| if hasattr(func, '__code__'): |
| got_disco = io.StringIO() |
| with contextlib.redirect_stdout(got_disco): |
| dis.disco(func.__code__, **kwargs) |
| self.do_disassembly_compare(got_disco.getvalue(), expected) |
| |
| def test_opmap(self): |
| self.assertEqual(dis.opmap["CACHE"], 0) |
| self.assertIn(dis.opmap["LOAD_CONST"], dis.hasconst) |
| self.assertIn(dis.opmap["STORE_NAME"], dis.hasname) |
| |
| def test_opname(self): |
| self.assertEqual(dis.opname[dis.opmap["LOAD_FAST"]], "LOAD_FAST") |
| |
| def test_boundaries(self): |
| self.assertEqual(dis.opmap["EXTENDED_ARG"], dis.EXTENDED_ARG) |
| |
| def test_widths(self): |
| long_opcodes = set(['JUMP_BACKWARD_NO_INTERRUPT', |
| 'LOAD_FAST_BORROW_LOAD_FAST_BORROW', |
| 'INSTRUMENTED_CALL_FUNCTION_EX', |
| 'ANNOTATIONS_PLACEHOLDER']) |
| for op, opname in enumerate(dis.opname): |
| if opname in long_opcodes or opname.startswith("INSTRUMENTED"): |
| continue |
| if opname in opcode._specialized_opmap: |
| continue |
| with self.subTest(opname=opname): |
| width = dis._OPNAME_WIDTH |
| if op in dis.hasarg: |
| width += 1 + dis._OPARG_WIDTH |
| self.assertLessEqual(len(opname), width) |
| |
| def test_dis(self): |
| self.do_disassembly_test(_f, dis_f) |
| |
| def test_dis_with_offsets(self): |
| self.do_disassembly_test(_f, dis_f_with_offsets, show_offsets=True) |
| |
| @requires_debug_ranges() |
| def test_dis_with_all_positions(self): |
| def format_instr_positions(instr): |
| values = tuple('?' if p is None else p for p in instr.positions) |
| return '%s:%s-%s:%s' % (values[0], values[2], values[1], values[3]) |
| |
| instrs = list(dis.get_instructions(_f)) |
| for instr in instrs: |
| with self.subTest(instr=instr): |
| self.assertTrue(all(p is not None for p in instr.positions)) |
| positions = tuple(map(format_instr_positions, instrs)) |
| expected = dis_f_with_positions_format % positions |
| self.do_disassembly_test(_f, expected, show_positions=True) |
| |
| @requires_debug_ranges() |
| def test_dis_with_some_positions(self): |
| code = ("def f():\n" |
| " try: pass\n" |
| " finally:pass") |
| f = compile(ast.parse(code), "?", "exec").co_consts[0] |
| |
| expect = '\n'.join([ |
| '1:0-1:0 RESUME 0', |
| '', |
| '2:3-3:15 NOP', |
| '', |
| '3:11-3:15 LOAD_CONST 0 (None)', |
| '3:11-3:15 RETURN_VALUE', |
| '', |
| ' -- L1: PUSH_EXC_INFO', |
| '', |
| '3:11-3:15 RERAISE 0', |
| '', |
| ' -- L2: COPY 3', |
| ' -- POP_EXCEPT', |
| ' -- RERAISE 1', |
| 'ExceptionTable:', |
| ' L1 to L2 -> L2 [1] lasti', |
| '', |
| ]) |
| self.do_disassembly_test(f, expect, show_positions=True) |
| |
| @requires_debug_ranges() |
| def test_dis_with_linenos_but_no_columns(self): |
| code = "def f():\n\tx = 1" |
| tree = ast.parse(code) |
| func = tree.body[0] |
| ass_x = func.body[0].targets[0] |
| # remove columns information but keep line information |
| ass_x.col_offset = ass_x.end_col_offset = -1 |
| f = compile(tree, "?", "exec").co_consts[0] |
| |
| expect = '\n'.join([ |
| '1:0-1:0 RESUME 0', |
| '', |
| '2:5-2:6 LOAD_SMALL_INT 1', |
| '2:?-2:? STORE_FAST 0 (x)', |
| '2:?-2:? LOAD_CONST 1 (None)', |
| '2:?-2:? RETURN_VALUE', |
| '', |
| ]) |
| self.do_disassembly_test(f, expect, show_positions=True) |
| |
| def test_dis_with_no_positions(self): |
| def f(): |
| pass |
| |
| f.__code__ = f.__code__.replace(co_linetable=b'') |
| expect = '\n'.join([ |
| ' RESUME 0', |
| ' LOAD_CONST 0 (None)', |
| ' RETURN_VALUE', |
| '', |
| ]) |
| self.do_disassembly_test(f, expect, show_positions=True) |
| |
| def test_bug_708901(self): |
| self.do_disassembly_test(bug708901, dis_bug708901) |
| |
| def test_bug_1333982(self): |
| # This one is checking bytecodes generated for an `assert` statement, |
| # so fails if the tests are run with -O. Skip this test then. |
| if not __debug__: |
| self.skipTest('need asserts, run without -O') |
| |
| self.do_disassembly_test(bug1333982, dis_bug1333982) |
| |
| def test_bug_42562(self): |
| self.do_disassembly_test(bug42562, dis_bug42562) |
| |
| def test_bug_45757(self): |
| # Extended arg followed by NOP |
| self.do_disassembly_test(code_bug_45757, dis_bug_45757) |
| |
| def test_bug_46724(self): |
| # Test that negative operargs are handled properly |
| self.do_disassembly_test(bug46724, dis_bug46724) |
| |
| def test_kw_names(self): |
| # Test that value is displayed for keyword argument names: |
| self.do_disassembly_test(wrap_func_w_kwargs, dis_kw_names) |
| |
| def test_intrinsic_1(self): |
| # Test that argrepr is displayed for CALL_INTRINSIC_1 |
| self.do_disassembly_test("from math import *", dis_intrinsic_1_2) |
| self.do_disassembly_test("+a", dis_intrinsic_1_5) |
| self.do_disassembly_test("(*a,)", dis_intrinsic_1_6) |
| |
| def test_intrinsic_2(self): |
| self.assertIn("CALL_INTRINSIC_2 1 (INTRINSIC_PREP_RERAISE_STAR)", |
| self.get_disassembly("try: pass\nexcept* Exception: x")) |
| |
| def test_big_linenos(self): |
| def func(count): |
| namespace = {} |
| func = "def foo():\n " + "".join(["\n "] * count + ["spam\n"]) |
| exec(func, namespace) |
| return namespace['foo'] |
| |
| # Test all small ranges |
| for i in range(1, 300): |
| expected = _BIG_LINENO_FORMAT % (i + 2) |
| self.do_disassembly_test(func(i), expected) |
| |
| # Test some larger ranges too |
| for i in range(300, 1000, 10): |
| expected = _BIG_LINENO_FORMAT % (i + 2) |
| self.do_disassembly_test(func(i), expected) |
| |
| for i in range(1000, 5000, 10): |
| expected = _BIG_LINENO_FORMAT2 % (i + 2) |
| self.do_disassembly_test(func(i), expected) |
| |
| from test import dis_module |
| self.do_disassembly_test(dis_module, dis_module_expected_results) |
| |
| def test_disassemble_str(self): |
| self.do_disassembly_test(expr_str, dis_expr_str) |
| self.do_disassembly_test(simple_stmt_str, dis_simple_stmt_str) |
| self.do_disassembly_test(annot_stmt_str, dis_annot_stmt_str) |
| self.do_disassembly_test(fn_with_annotate_str, dis_fn_with_annotate_str) |
| self.do_disassembly_test(compound_stmt_str, dis_compound_stmt_str) |
| |
| def test_disassemble_bytes(self): |
| self.do_disassembly_test(_f.__code__.co_code, dis_f_co_code) |
| |
| def test_disassemble_class(self): |
| self.do_disassembly_test(_C, dis_c) |
| |
| def test_disassemble_instance_method(self): |
| self.do_disassembly_test(_C(1).__init__, dis_c_instance_method) |
| |
| def test_disassemble_instance_method_bytes(self): |
| method_bytecode = _C(1).__init__.__code__.co_code |
| self.do_disassembly_test(method_bytecode, dis_c_instance_method_bytes) |
| |
| def test_disassemble_static_method(self): |
| self.do_disassembly_test(_C.sm, dis_c_static_method) |
| |
| def test_disassemble_class_method(self): |
| self.do_disassembly_test(_C.cm, dis_c_class_method) |
| |
| def test_disassemble_generator(self): |
| gen_func_disas = self.get_disassembly(_g) # Generator function |
| gen_disas = self.get_disassembly(_g(1)) # Generator iterator |
| self.assertEqual(gen_disas, gen_func_disas) |
| |
| def test_disassemble_async_generator(self): |
| agen_func_disas = self.get_disassembly(_ag) # Async generator function |
| agen_disas = self.get_disassembly(_ag(1)) # Async generator iterator |
| self.assertEqual(agen_disas, agen_func_disas) |
| |
| def test_disassemble_coroutine(self): |
| coro_func_disas = self.get_disassembly(_co) # Coroutine function |
| coro = _co(1) # Coroutine object |
| coro.close() # Avoid a RuntimeWarning (never awaited) |
| coro_disas = self.get_disassembly(coro) |
| self.assertEqual(coro_disas, coro_func_disas) |
| |
| def test_disassemble_fstring(self): |
| self.do_disassembly_test(_fstring, dis_fstring) |
| |
| def test_disassemble_with(self): |
| self.do_disassembly_test(_with, dis_with) |
| |
| def test_disassemble_asyncwith(self): |
| self.do_disassembly_test(_asyncwith, dis_asyncwith) |
| |
| def test_disassemble_try_finally(self): |
| self.do_disassembly_test(_tryfinally, dis_tryfinally) |
| self.do_disassembly_test(_tryfinallyconst, dis_tryfinallyconst) |
| |
| def test_dis_none(self): |
| try: |
| del sys.last_exc |
| except AttributeError: |
| pass |
| try: |
| del sys.last_traceback |
| except AttributeError: |
| pass |
| self.assertRaises(RuntimeError, dis.dis, None) |
| |
| def test_dis_traceback(self): |
| self.maxDiff = None |
| try: |
| del sys.last_traceback |
| except AttributeError: |
| pass |
| |
| try: |
| 1/0 |
| except Exception as e: |
| tb = e.__traceback__ |
| sys.last_exc = e |
| |
| tb_dis = self.get_disassemble_as_string(tb.tb_frame.f_code, tb.tb_lasti) |
| self.do_disassembly_test(None, tb_dis) |
| |
| def test_dis_object(self): |
| self.assertRaises(TypeError, dis.dis, object()) |
| |
| def test_disassemble_recursive(self): |
| def check(expected, **kwargs): |
| dis = self.get_disassembly(_h, **kwargs) |
| dis = self.strip_addresses(dis) |
| self.assertEqual(dis, expected) |
| |
| check(dis_nested_0, depth=0) |
| check(dis_nested_1, depth=1) |
| check(dis_nested_2, depth=2) |
| check(dis_nested_2, depth=3) |
| check(dis_nested_2, depth=None) |
| check(dis_nested_2) |
| |
| def test__try_compile_no_context_exc_on_error(self): |
| # see gh-102114 |
| try: |
| dis._try_compile(")", "") |
| except Exception as e: |
| self.assertIsNone(e.__context__) |
| |
| def test_async_for_presentation(self): |
| |
| async def afunc(): |
| async for letter in async_iter1: |
| l2 |
| l3 |
| |
| disassembly = self.get_disassembly(afunc) |
| for line in disassembly.split("\n"): |
| if "END_ASYNC_FOR" in line: |
| break |
| else: |
| self.fail("No END_ASYNC_FOR in disassembly of async for") |
| self.assertNotIn("to", line) |
| self.assertIn("from", line) |
| |
| |
| @staticmethod |
| def code_quicken(f): |
| _testinternalcapi = import_helper.import_module("_testinternalcapi") |
| for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD): |
| f() |
| |
| @cpython_only |
| @requires_specialization |
| def test_super_instructions(self): |
| self.code_quicken(lambda: load_test(0, 0)) |
| got = self.get_disassembly(load_test, adaptive=True) |
| self.do_disassembly_compare(got, dis_load_test_quickened_code) |
| |
| @cpython_only |
| @requires_specialization |
| def test_load_attr_specialize(self): |
| load_attr_quicken = """\ |
| 0 RESUME_CHECK 0 |
| |
| 1 LOAD_CONST 0 ('a') |
| LOAD_ATTR_SLOT 0 (__class__) |
| RETURN_VALUE |
| """ |
| co = compile("'a'.__class__", "", "eval") |
| self.code_quicken(lambda: exec(co, {}, {})) |
| got = self.get_disassembly(co, adaptive=True) |
| self.do_disassembly_compare(got, load_attr_quicken) |
| |
| @cpython_only |
| @requires_specialization |
| def test_call_specialize(self): |
| call_quicken = """\ |
| 0 RESUME_CHECK 0 |
| |
| 1 LOAD_NAME 0 (str) |
| PUSH_NULL |
| LOAD_SMALL_INT 1 |
| CALL_STR_1 1 |
| RETURN_VALUE |
| """ |
| co = compile("str(1)", "", "eval") |
| self.code_quicken(lambda: exec(co, {}, {})) |
| got = self.get_disassembly(co, adaptive=True) |
| self.do_disassembly_compare(got, call_quicken) |
| |
| @cpython_only |
| @requires_specialization |
| def test_loop_quicken(self): |
| # Loop can trigger a quicken where the loop is located |
| self.code_quicken(loop_test) |
| got = self.get_disassembly(loop_test, adaptive=True) |
| jit = sys._jit.is_enabled() |
| expected = dis_loop_test_quickened_code.format("JIT" if jit else "NO_JIT") |
| self.do_disassembly_compare(got, expected) |
| |
| @cpython_only |
| @requires_specialization |
| def test_loop_with_conditional_at_end_is_quickened(self): |
| _testinternalcapi = import_helper.import_module("_testinternalcapi") |
| def for_loop_true(x): |
| for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD): |
| if x: |
| pass |
| |
| for_loop_true(True) |
| self.assertIn('FOR_ITER_RANGE', |
| self.get_disassembly(for_loop_true, adaptive=True)) |
| |
| def for_loop_false(x): |
| for _ in range(_testinternalcapi.SPECIALIZATION_THRESHOLD): |
| if x: |
| pass |
| |
| for_loop_false(False) |
| self.assertIn('FOR_ITER_RANGE', |
| self.get_disassembly(for_loop_false, adaptive=True)) |
| |
| def while_loop(): |
| i = 0 |
| while i < _testinternalcapi.SPECIALIZATION_THRESHOLD: |
| i += 1 |
| |
| while_loop() |
| self.assertIn('COMPARE_OP_INT', |
| self.get_disassembly(while_loop, adaptive=True)) |
| |
| @cpython_only |
| def test_extended_arg_quick(self): |
| got = self.get_disassembly(extended_arg_quick) |
| self.do_disassembly_compare(got, dis_extended_arg_quick_code) |
| |
| def get_cached_values(self, quickened, adaptive): |
| def f(): |
| l = [] |
| for i in range(42): |
| l.append(i) |
| if quickened: |
| self.code_quicken(f) |
| else: |
| # "copy" the code to un-quicken it: |
| reset_code(f) |
| for instruction in _unroll_caches_as_Instructions(dis.get_instructions( |
| f, show_caches=True, adaptive=adaptive |
| ), show_caches=True): |
| if instruction.opname == "CACHE": |
| yield instruction.argrepr |
| |
| @cpython_only |
| def test_show_caches(self): |
| for quickened in (False, True): |
| for adaptive in (False, True): |
| with self.subTest(f"{quickened=}, {adaptive=}"): |
| if adaptive: |
| pattern = r"^(\w+: \d+)?$" |
| else: |
| pattern = r"^(\w+: 0)?$" |
| caches = list(self.get_cached_values(quickened, adaptive)) |
| for cache in caches: |
| self.assertRegex(cache, pattern) |
| total_caches = 21 |
| empty_caches = 7 |
| self.assertEqual(caches.count(""), empty_caches) |
| self.assertEqual(len(caches), total_caches) |
| |
| @cpython_only |
| def test_show_currinstr_with_cache(self): |
| """ |
| Make sure that with lasti pointing to CACHE, it still shows the current |
| line correctly |
| """ |
| def f(): |
| print(a) |
| # The code above should generate a LOAD_GLOBAL which has CACHE instr after |
| # However, this might change in the future. So we explicitly try to find |
| # a CACHE entry in the instructions. If we can't do that, fail the test |
| |
| for inst in _unroll_caches_as_Instructions( |
| dis.get_instructions(f, show_caches=True), show_caches=True): |
| if inst.opname == "CACHE": |
| op_offset = inst.offset - 2 |
| cache_offset = inst.offset |
| break |
| else: |
| opname = inst.opname |
| else: |
| self.fail("Can't find a CACHE entry in the function provided to do the test") |
| |
| assem_op = self.get_disassembly(f.__code__, lasti=op_offset, wrapper=False) |
| assem_cache = self.get_disassembly(f.__code__, lasti=cache_offset, wrapper=False) |
| |
| # Make sure --> exists and points to the correct op |
| self.assertRegex(assem_op, fr"--> {opname}") |
| # Make sure when lasti points to cache, it shows the same disassembly |
| self.assertEqual(assem_op, assem_cache) |
| |
| |
| class DisWithFileTests(DisTests): |
| |
| # Run the tests again, using the file arg instead of print |
| def get_disassembly(self, func, lasti=-1, wrapper=True, **kwargs): |
| output = io.StringIO() |
| if wrapper: |
| dis.dis(func, file=output, **kwargs) |
| else: |
| dis.disassemble(func, lasti, file=output, **kwargs) |
| return output.getvalue() |
| |
| |
| if dis.code_info.__doc__ is None: |
| code_info_consts = "0: None" |
| else: |
| code_info_consts = "0: 'Formatted details of methods, functions, or code.'" |
| |
| code_info_code_info = f"""\ |
| Name: code_info |
| Filename: (.*) |
| Argument count: 1 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 1 |
| Stack size: \\d+ |
| Flags: OPTIMIZED, NEWLOCALS(, HAS_DOCSTRING)? |
| Constants: |
| {code_info_consts} |
| Names: |
| 0: _format_code_info |
| 1: _get_code_object |
| Variable names: |
| 0: x""" |
| |
| |
| @staticmethod |
| def tricky(a, b, /, x, y, z=True, *args, c, d, e=[], **kwds): |
| def f(c=c): |
| print(a, b, x, y, z, c, d, e, f) |
| yield a, b, x, y, z, c, d, e, f |
| |
| code_info_tricky = """\ |
| Name: tricky |
| Filename: (.*) |
| Argument count: 5 |
| Positional-only arguments: 2 |
| Kw-only arguments: 3 |
| Number of locals: 10 |
| Stack size: \\d+ |
| Flags: OPTIMIZED, NEWLOCALS, VARARGS, VARKEYWORDS, GENERATOR |
| Constants: |
| 0: <code object f at (.*), file "(.*)", line (.*)> |
| 1: None |
| Variable names: |
| 0: a |
| 1: b |
| 2: x |
| 3: y |
| 4: z |
| 5: c |
| 6: d |
| 7: e |
| 8: args |
| 9: kwds |
| Cell variables: |
| 0: [abedfxyz] |
| 1: [abedfxyz] |
| 2: [abedfxyz] |
| 3: [abedfxyz] |
| 4: [abedfxyz] |
| 5: [abedfxyz] |
| 6: [abedfxyz] |
| 7: [abedfxyz]""" |
| # NOTE: the order of the cell variables above depends on dictionary order! |
| |
| co_tricky_nested_f = tricky.__func__.__code__.co_consts[0] |
| |
| code_info_tricky_nested_f = """\ |
| Filename: (.*) |
| Argument count: 1 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 1 |
| Stack size: \\d+ |
| Flags: OPTIMIZED, NEWLOCALS, NESTED |
| Constants: |
| 0: None |
| Names: |
| 0: print |
| Variable names: |
| 0: c |
| Free variables: |
| 0: [abedfxyz] |
| 1: [abedfxyz] |
| 2: [abedfxyz] |
| 3: [abedfxyz] |
| 4: [abedfxyz] |
| 5: [abedfxyz]""" |
| |
| code_info_expr_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: \\d+ |
| Flags: 0x0 |
| Constants: |
| 0: 1 |
| Names: |
| 0: x""" |
| |
| code_info_simple_stmt_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: \\d+ |
| Flags: 0x0 |
| Constants: |
| 0: 1 |
| 1: None |
| Names: |
| 0: x""" |
| |
| code_info_compound_stmt_str = """\ |
| Name: <module> |
| Filename: <disassembly> |
| Argument count: 0 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 0 |
| Stack size: \\d+ |
| Flags: 0x0 |
| Constants: |
| 0: 0 |
| Names: |
| 0: x""" |
| |
| |
| async def async_def(): |
| await 1 |
| async for a in b: pass |
| async with c as d: pass |
| |
| code_info_async_def = """\ |
| Name: async_def |
| Filename: (.*) |
| Argument count: 0 |
| Positional-only arguments: 0 |
| Kw-only arguments: 0 |
| Number of locals: 2 |
| Stack size: \\d+ |
| Flags: OPTIMIZED, NEWLOCALS, COROUTINE |
| Constants: |
| 0: 1 |
| 1: None |
| Names: |
| 0: b |
| 1: c |
| Variable names: |
| 0: a |
| 1: d""" |
| |
| class CodeInfoTests(unittest.TestCase): |
| test_pairs = [ |
| (dis.code_info, code_info_code_info), |
| (tricky, code_info_tricky), |
| (co_tricky_nested_f, code_info_tricky_nested_f), |
| (expr_str, code_info_expr_str), |
| (simple_stmt_str, code_info_simple_stmt_str), |
| (compound_stmt_str, code_info_compound_stmt_str), |
| (async_def, code_info_async_def) |
| ] |
| |
| def test_code_info(self): |
| self.maxDiff = 1000 |
| for x, expected in self.test_pairs: |
| self.assertRegex(dis.code_info(x), expected) |
| |
| def test_show_code(self): |
| self.maxDiff = 1000 |
| for x, expected in self.test_pairs: |
| with captured_stdout() as output: |
| dis.show_code(x) |
| self.assertRegex(output.getvalue(), expected+"\n") |
| output = io.StringIO() |
| dis.show_code(x, file=output) |
| self.assertRegex(output.getvalue(), expected) |
| |
| def test_code_info_object(self): |
| self.assertRaises(TypeError, dis.code_info, object()) |
| |
| def test_pretty_flags_no_flags(self): |
| self.assertEqual(dis.pretty_flags(0), '0x0') |
| |
| |
| # Fodder for instruction introspection tests |
| # Editing any of these may require recalculating the expected output |
| def outer(a=1, b=2): |
| def f(c=3, d=4): |
| def inner(e=5, f=6): |
| print(a, b, c, d, e, f) |
| print(a, b, c, d) |
| return inner |
| print(a, b, '', 1, [], {}, "Hello world!") |
| return f |
| |
| def jumpy(): |
| # This won't actually run (but that's OK, we only disassemble it) |
| for i in range(10): |
| print(i) |
| if i < 4: |
| continue |
| if i > 6: |
| break |
| else: |
| print("I can haz else clause?") |
| while i: |
| print(i) |
| i -= 1 |
| if i > 6: |
| continue |
| if i < 4: |
| break |
| else: |
| print("Who let lolcatz into this test suite?") |
| try: |
| 1 / 0 |
| except ZeroDivisionError: |
| print("Here we go, here we go, here we go...") |
| else: |
| with i as dodgy: |
| print("Never reach this") |
| finally: |
| print("OK, now we're done") |
| |
| # End fodder for opinfo generation tests |
| expected_outer_line = 1 |
| _line_offset = outer.__code__.co_firstlineno - 1 |
| code_object_f = outer.__code__.co_consts[1] |
| expected_f_line = code_object_f.co_firstlineno - _line_offset |
| code_object_inner = code_object_f.co_consts[1] |
| expected_inner_line = code_object_inner.co_firstlineno - _line_offset |
| expected_jumpy_line = 1 |
| |
| # The following lines are useful to regenerate the expected results after |
| # either the fodder is modified or the bytecode generation changes |
| # After regeneration, update the references to code_object_f and |
| # code_object_inner before rerunning the tests |
| |
| def _stringify_instruction(instr): |
| # Since postions offsets change a lot for these test cases, ignore them. |
| base = ( |
| f" make_inst(opname={instr.opname!r}, arg={instr.arg!r}, argval={instr.argval!r}, " + |
| f"argrepr={instr.argrepr!r}, offset={instr.offset}, start_offset={instr.start_offset}, " + |
| f"starts_line={instr.starts_line!r}, line_number={instr.line_number}" |
| ) |
| if instr.label is not None: |
| base += f", label={instr.label!r}" |
| if instr.cache_info: |
| base += f", cache_info={instr.cache_info!r}" |
| return base + ")," |
| |
| def _prepare_test_cases(): |
| ignore = io.StringIO() |
| with contextlib.redirect_stdout(ignore): |
| f = outer() |
| inner = f() |
| _instructions_outer = dis.get_instructions(outer, first_line=expected_outer_line) |
| _instructions_f = dis.get_instructions(f, first_line=expected_f_line) |
| _instructions_inner = dis.get_instructions(inner, first_line=expected_inner_line) |
| _instructions_jumpy = dis.get_instructions(jumpy, first_line=expected_jumpy_line) |
| result = "\n".join( |
| [ |
| "expected_opinfo_outer = [", |
| *map(_stringify_instruction, _instructions_outer), |
| "]", |
| "", |
| "expected_opinfo_f = [", |
| *map(_stringify_instruction, _instructions_f), |
| "]", |
| "", |
| "expected_opinfo_inner = [", |
| *map(_stringify_instruction, _instructions_inner), |
| "]", |
| "", |
| "expected_opinfo_jumpy = [", |
| *map(_stringify_instruction, _instructions_jumpy), |
| "]", |
| ] |
| ) |
| result = result.replace(repr(repr(code_object_f)), "repr(code_object_f)") |
| result = result.replace(repr(code_object_f), "code_object_f") |
| result = result.replace(repr(repr(code_object_inner)), "repr(code_object_inner)") |
| result = result.replace(repr(code_object_inner), "code_object_inner") |
| print(result) |
| |
| # from test.test_dis import _prepare_test_cases; _prepare_test_cases() |
| |
| make_inst = dis.Instruction.make |
| |
| expected_opinfo_outer = [ |
| make_inst(opname='MAKE_CELL', arg=0, argval='a', argrepr='a', offset=0, start_offset=0, starts_line=True, line_number=None), |
| make_inst(opname='MAKE_CELL', arg=1, argval='b', argrepr='b', offset=2, start_offset=2, starts_line=False, line_number=None), |
| make_inst(opname='RESUME', arg=0, argval=0, argrepr='', offset=4, start_offset=4, starts_line=True, line_number=1), |
| make_inst(opname='LOAD_CONST', arg=4, argval=(3, 4), argrepr='(3, 4)', offset=6, start_offset=6, starts_line=True, line_number=2), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='a', argrepr='a', offset=8, start_offset=8, starts_line=False, line_number=2), |
| make_inst(opname='LOAD_FAST_BORROW', arg=1, argval='b', argrepr='b', offset=10, start_offset=10, starts_line=False, line_number=2), |
| make_inst(opname='BUILD_TUPLE', arg=2, argval=2, argrepr='', offset=12, start_offset=12, starts_line=False, line_number=2), |
| make_inst(opname='LOAD_CONST', arg=1, argval=code_object_f, argrepr=repr(code_object_f), offset=14, start_offset=14, starts_line=False, line_number=2), |
| make_inst(opname='MAKE_FUNCTION', arg=None, argval=None, argrepr='', offset=16, start_offset=16, starts_line=False, line_number=2), |
| make_inst(opname='SET_FUNCTION_ATTRIBUTE', arg=8, argval=8, argrepr='closure', offset=18, start_offset=18, starts_line=False, line_number=2), |
| make_inst(opname='SET_FUNCTION_ATTRIBUTE', arg=1, argval=1, argrepr='defaults', offset=20, start_offset=20, starts_line=False, line_number=2), |
| make_inst(opname='STORE_FAST', arg=2, argval='f', argrepr='f', offset=22, start_offset=22, starts_line=False, line_number=2), |
| make_inst(opname='LOAD_GLOBAL', arg=1, argval='print', argrepr='print + NULL', offset=24, start_offset=24, starts_line=True, line_number=7, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_DEREF', arg=0, argval='a', argrepr='a', offset=34, start_offset=34, starts_line=False, line_number=7), |
| make_inst(opname='LOAD_DEREF', arg=1, argval='b', argrepr='b', offset=36, start_offset=36, starts_line=False, line_number=7), |
| make_inst(opname='LOAD_CONST', arg=2, argval='', argrepr="''", offset=38, start_offset=38, starts_line=False, line_number=7), |
| make_inst(opname='LOAD_SMALL_INT', arg=1, argval=1, argrepr='', offset=40, start_offset=40, starts_line=False, line_number=7), |
| make_inst(opname='BUILD_LIST', arg=0, argval=0, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=7), |
| make_inst(opname='BUILD_MAP', arg=0, argval=0, argrepr='', offset=44, start_offset=44, starts_line=False, line_number=7), |
| make_inst(opname='LOAD_CONST', arg=3, argval='Hello world!', argrepr="'Hello world!'", offset=46, start_offset=46, starts_line=False, line_number=7), |
| make_inst(opname='CALL', arg=7, argval=7, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=7, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=7), |
| make_inst(opname='LOAD_FAST_BORROW', arg=2, argval='f', argrepr='f', offset=58, start_offset=58, starts_line=True, line_number=8), |
| make_inst(opname='RETURN_VALUE', arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=8), |
| ] |
| |
| expected_opinfo_f = [ |
| make_inst(opname='COPY_FREE_VARS', arg=2, argval=2, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None), |
| make_inst(opname='MAKE_CELL', arg=0, argval='c', argrepr='c', offset=2, start_offset=2, starts_line=False, line_number=None), |
| make_inst(opname='MAKE_CELL', arg=1, argval='d', argrepr='d', offset=4, start_offset=4, starts_line=False, line_number=None), |
| make_inst(opname='RESUME', arg=0, argval=0, argrepr='', offset=6, start_offset=6, starts_line=True, line_number=2), |
| make_inst(opname='LOAD_CONST', arg=2, argval=(5, 6), argrepr='(5, 6)', offset=8, start_offset=8, starts_line=True, line_number=3), |
| make_inst(opname='LOAD_FAST_BORROW', arg=3, argval='a', argrepr='a', offset=10, start_offset=10, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_FAST_BORROW', arg=4, argval='b', argrepr='b', offset=12, start_offset=12, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='c', argrepr='c', offset=14, start_offset=14, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_FAST_BORROW', arg=1, argval='d', argrepr='d', offset=16, start_offset=16, starts_line=False, line_number=3), |
| make_inst(opname='BUILD_TUPLE', arg=4, argval=4, argrepr='', offset=18, start_offset=18, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_CONST', arg=1, argval=code_object_inner, argrepr=repr(code_object_inner), offset=20, start_offset=20, starts_line=False, line_number=3), |
| make_inst(opname='MAKE_FUNCTION', arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3), |
| make_inst(opname='SET_FUNCTION_ATTRIBUTE', arg=8, argval=8, argrepr='closure', offset=24, start_offset=24, starts_line=False, line_number=3), |
| make_inst(opname='SET_FUNCTION_ATTRIBUTE', arg=1, argval=1, argrepr='defaults', offset=26, start_offset=26, starts_line=False, line_number=3), |
| make_inst(opname='STORE_FAST', arg=2, argval='inner', argrepr='inner', offset=28, start_offset=28, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_GLOBAL', arg=1, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=5, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_DEREF', arg=3, argval='a', argrepr='a', offset=40, start_offset=40, starts_line=False, line_number=5), |
| make_inst(opname='LOAD_DEREF', arg=4, argval='b', argrepr='b', offset=42, start_offset=42, starts_line=False, line_number=5), |
| make_inst(opname='LOAD_DEREF', arg=0, argval='c', argrepr='c', offset=44, start_offset=44, starts_line=False, line_number=5), |
| make_inst(opname='LOAD_DEREF', arg=1, argval='d', argrepr='d', offset=46, start_offset=46, starts_line=False, line_number=5), |
| make_inst(opname='CALL', arg=4, argval=4, argrepr='', offset=48, start_offset=48, starts_line=False, line_number=5, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=56, start_offset=56, starts_line=False, line_number=5), |
| make_inst(opname='LOAD_FAST_BORROW', arg=2, argval='inner', argrepr='inner', offset=58, start_offset=58, starts_line=True, line_number=6), |
| make_inst(opname='RETURN_VALUE', arg=None, argval=None, argrepr='', offset=60, start_offset=60, starts_line=False, line_number=6), |
| ] |
| |
| expected_opinfo_inner = [ |
| make_inst(opname='COPY_FREE_VARS', arg=4, argval=4, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=None), |
| make_inst(opname='RESUME', arg=0, argval=0, argrepr='', offset=2, start_offset=2, starts_line=True, line_number=3), |
| make_inst(opname='LOAD_GLOBAL', arg=1, argval='print', argrepr='print + NULL', offset=4, start_offset=4, starts_line=True, line_number=4, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_DEREF', arg=2, argval='a', argrepr='a', offset=14, start_offset=14, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_DEREF', arg=3, argval='b', argrepr='b', offset=16, start_offset=16, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_DEREF', arg=4, argval='c', argrepr='c', offset=18, start_offset=18, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_DEREF', arg=5, argval='d', argrepr='d', offset=20, start_offset=20, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_FAST_BORROW_LOAD_FAST_BORROW', arg=1, argval=('e', 'f'), argrepr='e, f', offset=22, start_offset=22, starts_line=False, line_number=4), |
| make_inst(opname='CALL', arg=6, argval=6, argrepr='', offset=24, start_offset=24, starts_line=False, line_number=4, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=32, start_offset=32, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_CONST', arg=0, argval=None, argrepr='None', offset=34, start_offset=34, starts_line=False, line_number=4), |
| make_inst(opname='RETURN_VALUE', arg=None, argval=None, argrepr='', offset=36, start_offset=36, starts_line=False, line_number=4), |
| ] |
| |
| expected_opinfo_jumpy = [ |
| make_inst(opname='RESUME', arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=1), |
| make_inst(opname='LOAD_GLOBAL', arg=1, argval='range', argrepr='range + NULL', offset=2, start_offset=2, starts_line=True, line_number=3, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_SMALL_INT', arg=10, argval=10, argrepr='', offset=12, start_offset=12, starts_line=False, line_number=3), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=14, start_offset=14, starts_line=False, line_number=3, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='GET_ITER', arg=None, argval=None, argrepr='', offset=22, start_offset=22, starts_line=False, line_number=3), |
| make_inst(opname='FOR_ITER', arg=33, argval=94, argrepr='to L4', offset=24, start_offset=24, starts_line=False, line_number=3, label=1, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='STORE_FAST', arg=0, argval='i', argrepr='i', offset=28, start_offset=28, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=30, start_offset=30, starts_line=True, line_number=4, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=40, start_offset=40, starts_line=False, line_number=4), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=42, start_offset=42, starts_line=False, line_number=4, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=50, start_offset=50, starts_line=False, line_number=4), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=52, start_offset=52, starts_line=True, line_number=5), |
| make_inst(opname='LOAD_SMALL_INT', arg=4, argval=4, argrepr='', offset=54, start_offset=54, starts_line=False, line_number=5), |
| make_inst(opname='COMPARE_OP', arg=18, argval='<', argrepr='bool(<)', offset=56, start_offset=56, starts_line=False, line_number=5, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_FALSE', arg=3, argval=70, argrepr='to L2', offset=60, start_offset=60, starts_line=False, line_number=5, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=64, start_offset=64, starts_line=False, line_number=5), |
| make_inst(opname='JUMP_BACKWARD', arg=23, argval=24, argrepr='to L1', offset=66, start_offset=66, starts_line=True, line_number=6, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=70, start_offset=70, starts_line=True, line_number=7, label=2), |
| make_inst(opname='LOAD_SMALL_INT', arg=6, argval=6, argrepr='', offset=72, start_offset=72, starts_line=False, line_number=7), |
| make_inst(opname='COMPARE_OP', arg=148, argval='>', argrepr='bool(>)', offset=74, start_offset=74, starts_line=False, line_number=7, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_TRUE', arg=3, argval=88, argrepr='to L3', offset=78, start_offset=78, starts_line=False, line_number=7, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=82, start_offset=82, starts_line=False, line_number=7), |
| make_inst(opname='JUMP_BACKWARD', arg=32, argval=24, argrepr='to L1', offset=84, start_offset=84, starts_line=False, line_number=7, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=88, start_offset=88, starts_line=True, line_number=8, label=3), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=90, start_offset=90, starts_line=False, line_number=8), |
| make_inst(opname='JUMP_FORWARD', arg=13, argval=120, argrepr='to L5', offset=92, start_offset=92, starts_line=False, line_number=8), |
| make_inst(opname='END_FOR', arg=None, argval=None, argrepr='', offset=94, start_offset=94, starts_line=True, line_number=3, label=4), |
| make_inst(opname='POP_ITER', arg=None, argval=None, argrepr='', offset=96, start_offset=96, starts_line=False, line_number=3), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=98, start_offset=98, starts_line=True, line_number=10, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=1, argval='I can haz else clause?', argrepr="'I can haz else clause?'", offset=108, start_offset=108, starts_line=False, line_number=10), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=110, start_offset=110, starts_line=False, line_number=10, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=118, start_offset=118, starts_line=False, line_number=10), |
| make_inst(opname='LOAD_FAST_CHECK', arg=0, argval='i', argrepr='i', offset=120, start_offset=120, starts_line=True, line_number=11, label=5), |
| make_inst(opname='TO_BOOL', arg=None, argval=None, argrepr='', offset=122, start_offset=122, starts_line=False, line_number=11, cache_info=[('counter', 1, b'\x00\x00'), ('version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_FALSE', arg=40, argval=214, argrepr='to L8', offset=130, start_offset=130, starts_line=False, line_number=11, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=134, start_offset=134, starts_line=False, line_number=11), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=136, start_offset=136, starts_line=True, line_number=12, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=146, start_offset=146, starts_line=False, line_number=12), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=148, start_offset=148, starts_line=False, line_number=12, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=156, start_offset=156, starts_line=False, line_number=12), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=158, start_offset=158, starts_line=True, line_number=13), |
| make_inst(opname='LOAD_SMALL_INT', arg=1, argval=1, argrepr='', offset=160, start_offset=160, starts_line=False, line_number=13), |
| make_inst(opname='BINARY_OP', arg=23, argval=23, argrepr='-=', offset=162, start_offset=162, starts_line=False, line_number=13, cache_info=[('counter', 1, b'\x00\x00'), ('descr', 4, b'\x00\x00\x00\x00\x00\x00\x00\x00')]), |
| make_inst(opname='STORE_FAST', arg=0, argval='i', argrepr='i', offset=174, start_offset=174, starts_line=False, line_number=13), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=176, start_offset=176, starts_line=True, line_number=14), |
| make_inst(opname='LOAD_SMALL_INT', arg=6, argval=6, argrepr='', offset=178, start_offset=178, starts_line=False, line_number=14), |
| make_inst(opname='COMPARE_OP', arg=148, argval='>', argrepr='bool(>)', offset=180, start_offset=180, starts_line=False, line_number=14, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_FALSE', arg=3, argval=194, argrepr='to L6', offset=184, start_offset=184, starts_line=False, line_number=14, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=188, start_offset=188, starts_line=False, line_number=14), |
| make_inst(opname='JUMP_BACKWARD', arg=37, argval=120, argrepr='to L5', offset=190, start_offset=190, starts_line=True, line_number=15, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=194, start_offset=194, starts_line=True, line_number=16, label=6), |
| make_inst(opname='LOAD_SMALL_INT', arg=4, argval=4, argrepr='', offset=196, start_offset=196, starts_line=False, line_number=16), |
| make_inst(opname='COMPARE_OP', arg=18, argval='<', argrepr='bool(<)', offset=198, start_offset=198, starts_line=False, line_number=16, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_TRUE', arg=3, argval=212, argrepr='to L7', offset=202, start_offset=202, starts_line=False, line_number=16, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=206, start_offset=206, starts_line=False, line_number=16), |
| make_inst(opname='JUMP_BACKWARD', arg=46, argval=120, argrepr='to L5', offset=208, start_offset=208, starts_line=False, line_number=16, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='JUMP_FORWARD', arg=11, argval=236, argrepr='to L9', offset=212, start_offset=212, starts_line=True, line_number=17, label=7), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=214, start_offset=214, starts_line=True, line_number=19, label=8, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=2, argval='Who let lolcatz into this test suite?', argrepr="'Who let lolcatz into this test suite?'", offset=224, start_offset=224, starts_line=False, line_number=19), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=226, start_offset=226, starts_line=False, line_number=19, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=234, start_offset=234, starts_line=False, line_number=19), |
| make_inst(opname='NOP', arg=None, argval=None, argrepr='', offset=236, start_offset=236, starts_line=True, line_number=20, label=9), |
| make_inst(opname='LOAD_SMALL_INT', arg=1, argval=1, argrepr='', offset=238, start_offset=238, starts_line=True, line_number=21), |
| make_inst(opname='LOAD_SMALL_INT', arg=0, argval=0, argrepr='', offset=240, start_offset=240, starts_line=False, line_number=21), |
| make_inst(opname='BINARY_OP', arg=11, argval=11, argrepr='/', offset=242, start_offset=242, starts_line=False, line_number=21, cache_info=[('counter', 1, b'\x00\x00'), ('descr', 4, b'\x00\x00\x00\x00\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=254, start_offset=254, starts_line=False, line_number=21), |
| make_inst(opname='LOAD_FAST_BORROW', arg=0, argval='i', argrepr='i', offset=256, start_offset=256, starts_line=True, line_number=25), |
| make_inst(opname='COPY', arg=1, argval=1, argrepr='', offset=258, start_offset=258, starts_line=False, line_number=25), |
| make_inst(opname='LOAD_SPECIAL', arg=1, argval=1, argrepr='__exit__', offset=260, start_offset=260, starts_line=False, line_number=25), |
| make_inst(opname='SWAP', arg=2, argval=2, argrepr='', offset=262, start_offset=262, starts_line=False, line_number=25), |
| make_inst(opname='SWAP', arg=3, argval=3, argrepr='', offset=264, start_offset=264, starts_line=False, line_number=25), |
| make_inst(opname='LOAD_SPECIAL', arg=0, argval=0, argrepr='__enter__', offset=266, start_offset=266, starts_line=False, line_number=25), |
| make_inst(opname='CALL', arg=0, argval=0, argrepr='', offset=268, start_offset=268, starts_line=False, line_number=25, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='STORE_FAST', arg=1, argval='dodgy', argrepr='dodgy', offset=276, start_offset=276, starts_line=False, line_number=25), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=278, start_offset=278, starts_line=True, line_number=26, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=3, argval='Never reach this', argrepr="'Never reach this'", offset=288, start_offset=288, starts_line=False, line_number=26), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=290, start_offset=290, starts_line=False, line_number=26, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=298, start_offset=298, starts_line=False, line_number=26), |
| make_inst(opname='LOAD_CONST', arg=4, argval=None, argrepr='None', offset=300, start_offset=300, starts_line=True, line_number=25), |
| make_inst(opname='LOAD_CONST', arg=4, argval=None, argrepr='None', offset=302, start_offset=302, starts_line=False, line_number=25), |
| make_inst(opname='LOAD_CONST', arg=4, argval=None, argrepr='None', offset=304, start_offset=304, starts_line=False, line_number=25), |
| make_inst(opname='CALL', arg=3, argval=3, argrepr='', offset=306, start_offset=306, starts_line=False, line_number=25, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=314, start_offset=314, starts_line=False, line_number=25), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=316, start_offset=316, starts_line=True, line_number=28, label=10, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=6, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=326, start_offset=326, starts_line=False, line_number=28), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=328, start_offset=328, starts_line=False, line_number=28, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=336, start_offset=336, starts_line=False, line_number=28), |
| make_inst(opname='LOAD_CONST', arg=4, argval=None, argrepr='None', offset=338, start_offset=338, starts_line=False, line_number=28), |
| make_inst(opname='RETURN_VALUE', arg=None, argval=None, argrepr='', offset=340, start_offset=340, starts_line=False, line_number=28), |
| make_inst(opname='PUSH_EXC_INFO', arg=None, argval=None, argrepr='', offset=342, start_offset=342, starts_line=True, line_number=25), |
| make_inst(opname='WITH_EXCEPT_START', arg=None, argval=None, argrepr='', offset=344, start_offset=344, starts_line=False, line_number=25), |
| make_inst(opname='TO_BOOL', arg=None, argval=None, argrepr='', offset=346, start_offset=346, starts_line=False, line_number=25, cache_info=[('counter', 1, b'\x00\x00'), ('version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_JUMP_IF_TRUE', arg=2, argval=362, argrepr='to L11', offset=354, start_offset=354, starts_line=False, line_number=25, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=358, start_offset=358, starts_line=False, line_number=25), |
| make_inst(opname='RERAISE', arg=2, argval=2, argrepr='', offset=360, start_offset=360, starts_line=False, line_number=25), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=362, start_offset=362, starts_line=False, line_number=25, label=11), |
| make_inst(opname='POP_EXCEPT', arg=None, argval=None, argrepr='', offset=364, start_offset=364, starts_line=False, line_number=25), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=366, start_offset=366, starts_line=False, line_number=25), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=368, start_offset=368, starts_line=False, line_number=25), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=370, start_offset=370, starts_line=False, line_number=25), |
| make_inst(opname='JUMP_BACKWARD_NO_INTERRUPT', arg=29, argval=316, argrepr='to L10', offset=372, start_offset=372, starts_line=False, line_number=25), |
| make_inst(opname='COPY', arg=3, argval=3, argrepr='', offset=374, start_offset=374, starts_line=True, line_number=None), |
| make_inst(opname='POP_EXCEPT', arg=None, argval=None, argrepr='', offset=376, start_offset=376, starts_line=False, line_number=None), |
| make_inst(opname='RERAISE', arg=1, argval=1, argrepr='', offset=378, start_offset=378, starts_line=False, line_number=None), |
| make_inst(opname='PUSH_EXC_INFO', arg=None, argval=None, argrepr='', offset=380, start_offset=380, starts_line=False, line_number=None), |
| make_inst(opname='LOAD_GLOBAL', arg=4, argval='ZeroDivisionError', argrepr='ZeroDivisionError', offset=382, start_offset=382, starts_line=True, line_number=22, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='CHECK_EXC_MATCH', arg=None, argval=None, argrepr='', offset=392, start_offset=392, starts_line=False, line_number=22), |
| make_inst(opname='POP_JUMP_IF_FALSE', arg=15, argval=428, argrepr='to L12', offset=394, start_offset=394, starts_line=False, line_number=22, cache_info=[('counter', 1, b'\x00\x00')]), |
| make_inst(opname='NOT_TAKEN', arg=None, argval=None, argrepr='', offset=398, start_offset=398, starts_line=False, line_number=22), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=400, start_offset=400, starts_line=False, line_number=22), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=402, start_offset=402, starts_line=True, line_number=23, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=5, argval='Here we go, here we go, here we go...', argrepr="'Here we go, here we go, here we go...'", offset=412, start_offset=412, starts_line=False, line_number=23), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=414, start_offset=414, starts_line=False, line_number=23, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=422, start_offset=422, starts_line=False, line_number=23), |
| make_inst(opname='POP_EXCEPT', arg=None, argval=None, argrepr='', offset=424, start_offset=424, starts_line=False, line_number=23), |
| make_inst(opname='JUMP_BACKWARD_NO_INTERRUPT', arg=56, argval=316, argrepr='to L10', offset=426, start_offset=426, starts_line=False, line_number=23), |
| make_inst(opname='RERAISE', arg=0, argval=0, argrepr='', offset=428, start_offset=428, starts_line=True, line_number=22, label=12), |
| make_inst(opname='COPY', arg=3, argval=3, argrepr='', offset=430, start_offset=430, starts_line=True, line_number=None), |
| make_inst(opname='POP_EXCEPT', arg=None, argval=None, argrepr='', offset=432, start_offset=432, starts_line=False, line_number=None), |
| make_inst(opname='RERAISE', arg=1, argval=1, argrepr='', offset=434, start_offset=434, starts_line=False, line_number=None), |
| make_inst(opname='PUSH_EXC_INFO', arg=None, argval=None, argrepr='', offset=436, start_offset=436, starts_line=False, line_number=None), |
| make_inst(opname='LOAD_GLOBAL', arg=3, argval='print', argrepr='print + NULL', offset=438, start_offset=438, starts_line=True, line_number=28, cache_info=[('counter', 1, b'\x00\x00'), ('index', 1, b'\x00\x00'), ('module_keys_version', 1, b'\x00\x00'), ('builtin_keys_version', 1, b'\x00\x00')]), |
| make_inst(opname='LOAD_CONST', arg=6, argval="OK, now we're done", argrepr='"OK, now we\'re done"', offset=448, start_offset=448, starts_line=False, line_number=28), |
| make_inst(opname='CALL', arg=1, argval=1, argrepr='', offset=450, start_offset=450, starts_line=False, line_number=28, cache_info=[('counter', 1, b'\x00\x00'), ('func_version', 2, b'\x00\x00\x00\x00')]), |
| make_inst(opname='POP_TOP', arg=None, argval=None, argrepr='', offset=458, start_offset=458, starts_line=False, line_number=28), |
| make_inst(opname='RERAISE', arg=0, argval=0, argrepr='', offset=460, start_offset=460, starts_line=False, line_number=28), |
| make_inst(opname='COPY', arg=3, argval=3, argrepr='', offset=462, start_offset=462, starts_line=True, line_number=None), |
| make_inst(opname='POP_EXCEPT', arg=None, argval=None, argrepr='', offset=464, start_offset=464, starts_line=False, line_number=None), |
| make_inst(opname='RERAISE', arg=1, argval=1, argrepr='', offset=466, start_offset=466, starts_line=False, line_number=None), |
| ] |
| |
| # One last piece of inspect fodder to check the default line number handling |
| def simple(): pass |
| expected_opinfo_simple = [ |
| make_inst(opname='RESUME', arg=0, argval=0, argrepr='', offset=0, start_offset=0, starts_line=True, line_number=simple.__code__.co_firstlineno), |
| make_inst(opname='LOAD_CONST', arg=0, argval=None, argrepr='None', offset=2, start_offset=2, starts_line=False, line_number=simple.__code__.co_firstlineno), |
| make_inst(opname='RETURN_VALUE', arg=None, argval=None, argrepr='', offset=4, start_offset=4, starts_line=False, line_number=simple.__code__.co_firstlineno), |
| ] |
| |
| |
| class InstructionTestCase(BytecodeTestCase): |
| |
| def assertInstructionsEqual(self, instrs_1, instrs_2, /): |
| instrs_1 = [instr_1._replace(positions=None, cache_info=None) for instr_1 in instrs_1] |
| instrs_2 = [instr_2._replace(positions=None, cache_info=None) for instr_2 in instrs_2] |
| self.assertEqual(instrs_1, instrs_2) |
| |
| class InstructionTests(InstructionTestCase): |
| |
| def __init__(self, *args): |
| super().__init__(*args) |
| self.maxDiff = None |
| |
| def test_instruction_str(self): |
| # smoke test for __str__ |
| instrs = dis.get_instructions(simple) |
| for instr in instrs: |
| str(instr) |
| |
| def test_default_first_line(self): |
| actual = dis.get_instructions(simple) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_simple) |
| |
| def test_first_line_set_to_None(self): |
| actual = dis.get_instructions(simple, first_line=None) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_simple) |
| |
| def test_outer(self): |
| actual = dis.get_instructions(outer, first_line=expected_outer_line) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_outer) |
| |
| def test_nested(self): |
| with captured_stdout(): |
| f = outer() |
| actual = dis.get_instructions(f, first_line=expected_f_line) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_f) |
| |
| def test_doubly_nested(self): |
| with captured_stdout(): |
| inner = outer()() |
| actual = dis.get_instructions(inner, first_line=expected_inner_line) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_inner) |
| |
| def test_jumpy(self): |
| actual = dis.get_instructions(jumpy, first_line=expected_jumpy_line) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_jumpy) |
| |
| @requires_debug_ranges() |
| def test_co_positions(self): |
| code = compile('f(\n x, y, z\n)', '<test>', 'exec') |
| positions = [ |
| instr.positions |
| for instr in dis.get_instructions(code) |
| ] |
| expected = [ |
| (0, 1, 0, 0), |
| (1, 1, 0, 1), |
| (1, 1, 0, 1), |
| (2, 2, 2, 3), |
| (2, 2, 5, 6), |
| (2, 2, 8, 9), |
| (1, 3, 0, 1), |
| (1, 3, 0, 1), |
| (1, 3, 0, 1), |
| (1, 3, 0, 1) |
| ] |
| self.assertEqual(positions, expected) |
| |
| named_positions = [ |
| (pos.lineno, pos.end_lineno, pos.col_offset, pos.end_col_offset) |
| for pos in positions |
| ] |
| self.assertEqual(named_positions, expected) |
| |
| @requires_debug_ranges() |
| def test_co_positions_missing_info(self): |
| code = compile('x, y, z', '<test>', 'exec') |
| code_without_location_table = code.replace(co_linetable=b'') |
| actual = dis.get_instructions(code_without_location_table) |
| for instruction in actual: |
| with self.subTest(instruction=instruction): |
| positions = instruction.positions |
| self.assertEqual(len(positions), 4) |
| if instruction.opname == "RESUME": |
| continue |
| self.assertIsNone(positions.lineno) |
| self.assertIsNone(positions.end_lineno) |
| self.assertIsNone(positions.col_offset) |
| self.assertIsNone(positions.end_col_offset) |
| |
| @requires_debug_ranges() |
| def test_co_positions_with_lots_of_caches(self): |
| def roots(a, b, c): |
| d = b**2 - 4 * a * c |
| yield (-b - cmath.sqrt(d)) / (2 * a) |
| if d: |
| yield (-b + cmath.sqrt(d)) / (2 * a) |
| code = roots.__code__ |
| ops = code.co_code[::2] |
| cache_opcode = opcode.opmap["CACHE"] |
| caches = sum(op == cache_opcode for op in ops) |
| non_caches = len(ops) - caches |
| # Make sure we have "lots of caches". If not, roots should be changed: |
| assert 1 / 3 <= caches / non_caches, "this test needs more caches!" |
| for show_caches in (False, True): |
| for adaptive in (False, True): |
| with self.subTest(f"{adaptive=}, {show_caches=}"): |
| co_positions = [ |
| positions |
| for op, positions in zip(ops, code.co_positions(), strict=True) |
| if show_caches or op != cache_opcode |
| ] |
| dis_positions = [ |
| None if instruction.positions is None else ( |
| instruction.positions.lineno, |
| instruction.positions.end_lineno, |
| instruction.positions.col_offset, |
| instruction.positions.end_col_offset, |
| ) |
| for instruction in _unroll_caches_as_Instructions(dis.get_instructions( |
| code, adaptive=adaptive, show_caches=show_caches |
| ), show_caches=show_caches) |
| ] |
| self.assertEqual(co_positions, dis_positions) |
| |
| def test_oparg_alias(self): |
| instruction = make_inst(opname="NOP", arg=None, argval=None, |
| argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None, |
| positions=None) |
| self.assertEqual(instruction.arg, instruction.oparg) |
| |
| def test_show_caches_with_label(self): |
| def f(x, y, z): |
| if x: |
| res = y |
| else: |
| res = z |
| return res |
| |
| output = io.StringIO() |
| dis.dis(f.__code__, file=output, show_caches=True) |
| self.assertIn("L1:", output.getvalue()) |
| |
| def test_is_op_format(self): |
| output = io.StringIO() |
| dis.dis("a is b", file=output, show_caches=True) |
| self.assertIn("IS_OP 0 (is)", output.getvalue()) |
| |
| output = io.StringIO() |
| dis.dis("a is not b", file=output, show_caches=True) |
| self.assertIn("IS_OP 1 (is not)", output.getvalue()) |
| |
| def test_contains_op_format(self): |
| output = io.StringIO() |
| dis.dis("a in b", file=output, show_caches=True) |
| self.assertIn("CONTAINS_OP 0 (in)", output.getvalue()) |
| |
| output = io.StringIO() |
| dis.dis("a not in b", file=output, show_caches=True) |
| self.assertIn("CONTAINS_OP 1 (not in)", output.getvalue()) |
| |
| def test_baseopname_and_baseopcode(self): |
| # Standard instructions |
| for name in dis.opmap: |
| instruction = make_inst(opname=name, arg=None, argval=None, argrepr='', offset=0, |
| start_offset=0, starts_line=True, line_number=1, label=None, positions=None) |
| baseopname = instruction.baseopname |
| baseopcode = instruction.baseopcode |
| self.assertIsNotNone(baseopname) |
| self.assertIsNotNone(baseopcode) |
| self.assertEqual(name, baseopname) |
| self.assertEqual(instruction.opcode, baseopcode) |
| |
| # Specialized instructions |
| for name in opcode._specialized_opmap: |
| instruction = make_inst(opname=name, arg=None, argval=None, argrepr='', |
| offset=0, start_offset=0, starts_line=True, line_number=1, label=None, positions=None) |
| baseopname = instruction.baseopname |
| baseopcode = instruction.baseopcode |
| self.assertIn(name, opcode._specializations[baseopname]) |
| self.assertEqual(opcode.opmap[baseopname], baseopcode) |
| |
| def test_jump_target(self): |
| # Non-jump instructions should return None |
| instruction = make_inst(opname="NOP", arg=None, argval=None, |
| argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None, |
| positions=None) |
| self.assertIsNone(instruction.jump_target) |
| |
| delta = 100 |
| instruction = make_inst(opname="JUMP_FORWARD", arg=delta, argval=delta, |
| argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None, |
| positions=None) |
| self.assertEqual(10 + 2 + 100*2, instruction.jump_target) |
| |
| # Test negative deltas |
| instruction = make_inst(opname="JUMP_BACKWARD", arg=delta, argval=delta, |
| argrepr='', offset=200, start_offset=200, starts_line=True, line_number=1, label=None, |
| positions=None) |
| self.assertEqual(200 + 2 - 100*2 + 2*1, instruction.jump_target) |
| |
| # Make sure cache entries are handled |
| instruction = make_inst(opname="SEND", arg=delta, argval=delta, |
| argrepr='', offset=10, start_offset=10, starts_line=True, line_number=1, label=None, |
| positions=None) |
| self.assertEqual(10 + 2 + 1*2 + 100*2, instruction.jump_target) |
| |
| def test_argval_argrepr(self): |
| def f(opcode, oparg, offset, *init_args): |
| arg_resolver = dis.ArgResolver(*init_args) |
| return arg_resolver.get_argval_argrepr(opcode, oparg, offset) |
| |
| offset = 42 |
| co_consts = (0, 1, 2, 3) |
| names = {1: 'a', 2: 'b'} |
| varname_from_oparg = lambda i : names[i] |
| labels_map = {24: 1} |
| args = (offset, co_consts, names, varname_from_oparg, labels_map) |
| self.assertEqual(f(opcode.opmap["POP_TOP"], None, *args), (None, '')) |
| self.assertEqual(f(opcode.opmap["LOAD_CONST"], 1, *args), (1, '1')) |
| self.assertEqual(f(opcode.opmap["LOAD_GLOBAL"], 2, *args), ('a', 'a')) |
| self.assertEqual(f(opcode.opmap["JUMP_BACKWARD"], 11, *args), (24, 'to L1')) |
| self.assertEqual(f(opcode.opmap["COMPARE_OP"], 3, *args), ('<', '<')) |
| self.assertEqual(f(opcode.opmap["SET_FUNCTION_ATTRIBUTE"], 2, *args), (2, 'kwdefaults')) |
| self.assertEqual(f(opcode.opmap["BINARY_OP"], 3, *args), (3, '<<')) |
| self.assertEqual(f(opcode.opmap["CALL_INTRINSIC_1"], 2, *args), (2, 'INTRINSIC_IMPORT_STAR')) |
| |
| def test_custom_arg_resolver(self): |
| class MyArgResolver(dis.ArgResolver): |
| def offset_from_jump_arg(self, op, arg, offset): |
| return arg + 1 |
| |
| def get_label_for_offset(self, offset): |
| return 2 * offset |
| |
| def f(opcode, oparg, offset, *init_args): |
| arg_resolver = MyArgResolver(*init_args) |
| return arg_resolver.get_argval_argrepr(opcode, oparg, offset) |
| offset = 42 |
| self.assertEqual(f(opcode.opmap["JUMP_BACKWARD"], 1, offset), (2, 'to L4')) |
| self.assertEqual(f(opcode.opmap["SETUP_FINALLY"], 2, offset), (3, 'to L6')) |
| |
| |
| def get_instructions(self, code): |
| return dis._get_instructions_bytes(code) |
| |
| def test_start_offset(self): |
| # When no extended args are present, |
| # start_offset should be equal to offset |
| |
| instructions = list(dis.Bytecode(_f)) |
| for instruction in instructions: |
| self.assertEqual(instruction.offset, instruction.start_offset) |
| |
| def last_item(iterable): |
| return functools.reduce(lambda a, b : b, iterable) |
| |
| code = bytes([ |
| opcode.opmap["LOAD_FAST"], 0x00, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF, |
| ]) |
| labels_map = dis._make_labels_map(code) |
| jump = last_item(self.get_instructions(code)) |
| self.assertEqual(4, jump.offset) |
| self.assertEqual(2, jump.start_offset) |
| |
| code = bytes([ |
| opcode.opmap["LOAD_FAST"], 0x00, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF, |
| opcode.opmap["CACHE"], 0x00, |
| ]) |
| jump = last_item(self.get_instructions(code)) |
| self.assertEqual(8, jump.offset) |
| self.assertEqual(2, jump.start_offset) |
| |
| code = bytes([ |
| opcode.opmap["LOAD_FAST"], 0x00, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["EXTENDED_ARG"], 0x01, |
| opcode.opmap["POP_JUMP_IF_TRUE"], 0xFF, |
| opcode.opmap["CACHE"], 0x00, |
| ]) |
| instructions = list(self.get_instructions(code)) |
| # 1st jump |
| self.assertEqual(4, instructions[2].offset) |
| self.assertEqual(2, instructions[2].start_offset) |
| # 2nd jump |
| self.assertEqual(14, instructions[6].offset) |
| self.assertEqual(8, instructions[6].start_offset) |
| |
| def test_cache_offset_and_end_offset(self): |
| code = bytes([ |
| opcode.opmap["LOAD_GLOBAL"], 0x01, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["LOAD_FAST"], 0x00, |
| opcode.opmap["CALL"], 0x01, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["CACHE"], 0x00, |
| opcode.opmap["CACHE"], 0x00 |
| ]) |
| instructions = list(self.get_instructions(code)) |
| self.assertEqual(2, instructions[0].cache_offset) |
| self.assertEqual(10, instructions[0].end_offset) |
| self.assertEqual(12, instructions[1].cache_offset) |
| self.assertEqual(12, instructions[1].end_offset) |
| self.assertEqual(14, instructions[2].cache_offset) |
| self.assertEqual(20, instructions[2].end_offset) |
| |
| # end_offset of the previous instruction should be equal to the |
| # start_offset of the following instruction |
| instructions = list(dis.Bytecode(self.test_cache_offset_and_end_offset)) |
| for prev, curr in zip(instructions, instructions[1:]): |
| self.assertEqual(prev.end_offset, curr.start_offset) |
| |
| |
| # get_instructions has its own tests above, so can rely on it to validate |
| # the object oriented API |
| class BytecodeTests(InstructionTestCase, DisTestBase): |
| |
| def test_instantiation(self): |
| # Test with function, method, code string and code object |
| for obj in [_f, _C(1).__init__, "a=1", _f.__code__]: |
| with self.subTest(obj=obj): |
| b = dis.Bytecode(obj) |
| self.assertIsInstance(b.codeobj, types.CodeType) |
| |
| self.assertRaises(TypeError, dis.Bytecode, object()) |
| |
| def test_iteration(self): |
| for obj in [_f, _C(1).__init__, "a=1", _f.__code__]: |
| with self.subTest(obj=obj): |
| via_object = list(dis.Bytecode(obj)) |
| via_generator = list(dis.get_instructions(obj)) |
| self.assertInstructionsEqual(via_object, via_generator) |
| |
| def test_explicit_first_line(self): |
| actual = dis.Bytecode(outer, first_line=expected_outer_line) |
| self.assertInstructionsEqual(list(actual), expected_opinfo_outer) |
| |
| def test_source_line_in_disassembly(self): |
| # Use the line in the source code |
| actual = dis.Bytecode(simple).dis() |
| actual = actual.strip().partition(" ")[0] # extract the line no |
| expected = str(simple.__code__.co_firstlineno) |
| self.assertEqual(actual, expected) |
| # Use an explicit first line number |
| actual = dis.Bytecode(simple, first_line=350).dis() |
| actual = actual.strip().partition(" ")[0] # extract the line no |
| self.assertEqual(actual, "350") |
| |
| def test_info(self): |
| self.maxDiff = 1000 |
| for x, expected in CodeInfoTests.test_pairs: |
| b = dis.Bytecode(x) |
| self.assertRegex(b.info(), expected) |
| |
| def test_disassembled(self): |
| actual = dis.Bytecode(_f).dis() |
| self.do_disassembly_compare(actual, dis_f) |
| |
| def test_from_traceback(self): |
| tb = get_tb() |
| b = dis.Bytecode.from_traceback(tb) |
| while tb.tb_next: tb = tb.tb_next |
| |
| self.assertEqual(b.current_offset, tb.tb_lasti) |
| |
| def test_from_traceback_dis(self): |
| self.maxDiff = None |
| tb = get_tb() |
| b = dis.Bytecode.from_traceback(tb) |
| self.assertEqual(b.dis(), dis_traceback) |
| |
| @requires_debug_ranges() |
| def test_bytecode_co_positions(self): |
| bytecode = dis.Bytecode("a=1") |
| for instr, positions in zip(bytecode, bytecode.codeobj.co_positions()): |
| assert instr.positions == positions |
| |
| class TestBytecodeTestCase(BytecodeTestCase): |
| def test_assert_not_in_with_op_not_in_bytecode(self): |
| code = compile("a = 1", "<string>", "exec") |
| self.assertInBytecode(code, "LOAD_SMALL_INT", 1) |
| self.assertNotInBytecode(code, "LOAD_NAME") |
| self.assertNotInBytecode(code, "LOAD_NAME", "a") |
| |
| def test_assert_not_in_with_arg_not_in_bytecode(self): |
| code = compile("a = 1", "<string>", "exec") |
| self.assertInBytecode(code, "LOAD_SMALL_INT") |
| self.assertInBytecode(code, "LOAD_SMALL_INT", 1) |
| self.assertNotInBytecode(code, "LOAD_CONST", 2) |
| |
| def test_assert_not_in_with_arg_in_bytecode(self): |
| code = compile("a = 1", "<string>", "exec") |
| with self.assertRaises(AssertionError): |
| self.assertNotInBytecode(code, "LOAD_SMALL_INT", 1) |
| |
| class TestFinderMethods(unittest.TestCase): |
| def test__find_imports(self): |
| cases = [ |
| ("import a.b.c", ('a.b.c', 0, None)), |
| ("from a.b import c", ('a.b', 0, ('c',))), |
| ("from a.b import c as d", ('a.b', 0, ('c',))), |
| ("from a.b import *", ('a.b', 0, ('*',))), |
| ("from ...a.b import c as d", ('a.b', 3, ('c',))), |
| ("from ..a.b import c as d, e as f", ('a.b', 2, ('c', 'e'))), |
| ("from ..a.b import *", ('a.b', 2, ('*',))), |
| ] |
| for src, expected in cases: |
| with self.subTest(src=src): |
| code = compile(src, "<string>", "exec") |
| res = tuple(dis._find_imports(code)) |
| self.assertEqual(len(res), 1) |
| self.assertEqual(res[0], expected) |
| |
| def test__find_store_names(self): |
| cases = [ |
| ("x+y", ()), |
| ("x=y=1", ('x', 'y')), |
| ("x+=y", ('x',)), |
| ("global x\nx=y=1", ('x', 'y')), |
| ("global x\nz=x", ('z',)), |
| ] |
| for src, expected in cases: |
| with self.subTest(src=src): |
| code = compile(src, "<string>", "exec") |
| res = tuple(dis._find_store_names(code)) |
| self.assertEqual(res, expected) |
| |
| def test_findlabels(self): |
| labels = dis.findlabels(jumpy.__code__.co_code) |
| jumps = [ |
| instr.offset |
| for instr in expected_opinfo_jumpy |
| if instr.is_jump_target |
| ] |
| |
| self.assertEqual(sorted(labels), sorted(jumps)) |
| |
| def test_findlinestarts(self): |
| def func(): |
| pass |
| |
| code = func.__code__ |
| offsets = [linestart[0] for linestart in dis.findlinestarts(code)] |
| self.assertEqual(offsets, [0, 2]) |
| |
| |
| class TestDisTraceback(DisTestBase): |
| def setUp(self) -> None: |
| try: # We need to clean up existing tracebacks |
| del sys.last_exc |
| except AttributeError: |
| pass |
| try: # We need to clean up existing tracebacks |
| del sys.last_traceback |
| except AttributeError: |
| pass |
| return super().setUp() |
| |
| def get_disassembly(self, tb): |
| output = io.StringIO() |
| with contextlib.redirect_stdout(output): |
| dis.distb(tb) |
| return output.getvalue() |
| |
| def test_distb_empty(self): |
| with self.assertRaises(RuntimeError): |
| dis.distb() |
| |
| def test_distb_last_traceback(self): |
| self.maxDiff = None |
| # We need to have an existing last traceback in `sys`: |
| tb = get_tb() |
| sys.last_traceback = tb |
| |
| self.do_disassembly_compare(self.get_disassembly(None), dis_traceback) |
| |
| def test_distb_explicit_arg(self): |
| self.maxDiff = None |
| tb = get_tb() |
| |
| self.do_disassembly_compare(self.get_disassembly(tb), dis_traceback) |
| |
| |
| class TestDisTracebackWithFile(TestDisTraceback): |
| # Run the `distb` tests again, using the file arg instead of print |
| def get_disassembly(self, tb): |
| output = io.StringIO() |
| with contextlib.redirect_stdout(output): |
| dis.distb(tb, file=output) |
| return output.getvalue() |
| |
| def _unroll_caches_as_Instructions(instrs, show_caches=False): |
| # Cache entries are no longer reported by dis as fake instructions, |
| # but some tests assume that do. We should rewrite the tests to assume |
| # the new API, but it will be clearer to keep the tests working as |
| # before and do that in a separate PR. |
| |
| for instr in instrs: |
| yield instr |
| if not show_caches: |
| continue |
| |
| offset = instr.offset |
| for name, size, data in (instr.cache_info or ()): |
| for i in range(size): |
| offset += 2 |
| # Only show the fancy argrepr for a CACHE instruction when it's |
| # the first entry for a particular cache value: |
| if i == 0: |
| argrepr = f"{name}: {int.from_bytes(data, sys.byteorder)}" |
| else: |
| argrepr = "" |
| |
| yield make_inst("CACHE", 0, None, argrepr, offset, offset, |
| False, None, None, instr.positions) |
| |
| |
| class TestDisCLI(unittest.TestCase): |
| |
| def setUp(self): |
| self.filename = tempfile.mktemp() |
| self.addCleanup(os_helper.unlink, self.filename) |
| |
| @staticmethod |
| def text_normalize(string): |
| """Dedent *string* and strip it from its surrounding whitespaces. |
| |
| This method is used by the other utility functions so that any |
| string to write or to match against can be freely indented. |
| """ |
| return textwrap.dedent(string).strip() |
| |
| def set_source(self, content): |
| with open(self.filename, 'w') as fp: |
| fp.write(self.text_normalize(content)) |
| |
| def invoke_dis(self, *flags): |
| output = io.StringIO() |
| with contextlib.redirect_stdout(output): |
| dis.main(args=[*flags, self.filename]) |
| return self.text_normalize(output.getvalue()) |
| |
| def check_output(self, source, expect, *flags): |
| with self.subTest(source=source, flags=flags): |
| self.set_source(source) |
| res = self.invoke_dis(*flags) |
| expect = self.text_normalize(expect) |
| self.assertListEqual(res.splitlines(), expect.splitlines()) |
| |
| def test_invocation(self): |
| # test various combinations of parameters |
| base_flags = [ |
| ('-C', '--show-caches'), |
| ('-O', '--show-offsets'), |
| ('-P', '--show-positions'), |
| ('-S', '--specialized'), |
| ] |
| |
| self.set_source(''' |
| def f(): |
| print(x) |
| return None |
| ''') |
| |
| for r in range(1, len(base_flags) + 1): |
| for choices in itertools.combinations(base_flags, r=r): |
| for args in itertools.product(*choices): |
| with self.subTest(args=args[1:]): |
| _ = self.invoke_dis(*args) |
| |
| with self.assertRaises(SystemExit): |
| # suppress argparse error message |
| with contextlib.redirect_stderr(io.StringIO()): |
| _ = self.invoke_dis('--unknown') |
| |
| def test_show_cache(self): |
| # test 'python -m dis -C/--show-caches' |
| source = 'print()' |
| expect = ''' |
| 0 RESUME 0 |
| |
| 1 LOAD_NAME 0 (print) |
| PUSH_NULL |
| CALL 0 |
| CACHE 0 (counter: 0) |
| CACHE 0 (func_version: 0) |
| CACHE 0 |
| POP_TOP |
| LOAD_CONST 0 (None) |
| RETURN_VALUE |
| ''' |
| for flag in ['-C', '--show-caches']: |
| self.check_output(source, expect, flag) |
| |
| def test_show_offsets(self): |
| # test 'python -m dis -O/--show-offsets' |
| source = 'pass' |
| expect = ''' |
| 0 0 RESUME 0 |
| |
| 1 2 LOAD_CONST 0 (None) |
| 4 RETURN_VALUE |
| ''' |
| for flag in ['-O', '--show-offsets']: |
| self.check_output(source, expect, flag) |
| |
| def test_show_positions(self): |
| # test 'python -m dis -P/--show-positions' |
| source = 'pass' |
| expect = ''' |
| 0:0-1:0 RESUME 0 |
| |
| 1:0-1:4 LOAD_CONST 0 (None) |
| 1:0-1:4 RETURN_VALUE |
| ''' |
| for flag in ['-P', '--show-positions']: |
| self.check_output(source, expect, flag) |
| |
| def test_specialized_code(self): |
| # test 'python -m dis -S/--specialized' |
| source = 'pass' |
| expect = ''' |
| 0 RESUME 0 |
| |
| 1 LOAD_CONST 0 (None) |
| RETURN_VALUE |
| ''' |
| for flag in ['-S', '--specialized']: |
| self.check_output(source, expect, flag) |
| |
| |
| if __name__ == "__main__": |
| unittest.main() |
