0 uˆÑÐ „Ï�ÏϾÍ?÷u"""Disassembler of Python byte code into mnemonics.""" import sys import types import collections import io from opcode import * from opcode import ( __all__ as _opcodes_all, _cache_format, _inline_cache_entries, _nb_ops, _specializations, _specialized_instructions, ) __all__ = ["code_info", "dis", "disassemble", "distb", "disco", "findlinestarts", "findlabels", "show_code", "get_instructions", "Instruction", "Bytecode"] + _opcodes_all del _opcodes_all _have_code = (types.MethodType, types.FunctionType, types.CodeType, classmethod, staticmethod, type) FORMAT_VALUE = opmap['FORMAT_VALUE'] FORMAT_VALUE_CONVERTERS = ( (None, ''), (str, 'str'), (repr, 'repr'), (ascii, 'ascii'), ) MAKE_FUNCTION = opmap['MAKE_FUNCTION'] MAKE_FUNCTION_FLAGS = ('defaults', 'kwdefaults', 'annotations', 'closure') LOAD_CONST = opmap['LOAD_CONST'] LOAD_GLOBAL = opmap['LOAD_GLOBAL'] BINARY_OP = opmap['BINARY_OP'] JUMP_BACKWARD = opmap['JUMP_BACKWARD'] CACHE = opmap["CACHE"] _all_opname = list(opname) _all_opmap = dict(opmap) _empty_slot = [slot for slot, name in enumerate(_all_opname) if name.startswith("<")] for spec_op, specialized in zip(_empty_slot, _specialized_instructions): # fill opname and opmap _all_opname[spec_op] = specialized _all_opmap[specialized] = spec_op deoptmap = { specialized: base for base, family in _specializations.items() for specialized in family } def _try_compile(source, name): """Attempts to compile the given source, first as an expression and then as a statement if the first approach fails. Utility function to accept strings in functions that otherwise expect code objects """ try: c = compile(source, name, 'eval') except SyntaxError: c = compile(source, name, 'exec') return c def dis(x=None, *, file=None, depth=None, show_caches=False, adaptive=False): """Disassemble classes, methods, functions, and other compiled objects. With no argument, disassemble the last traceback. Compiled objects currently include generator objects, async generator objects, and coroutine objects, all of which store their code object in a special attribute. """ if x is None: distb(file=file, show_caches=show_caches, adaptive=adaptive) return # Extract functions from methods. if hasattr(x, '__func__'): x = x.__func__ # Extract compiled code objects from... if hasattr(x, '__code__'): # ...a function, or x = x.__code__ elif hasattr(x, 'gi_code'): #...a generator object, or x = x.gi_code elif hasattr(x, 'ag_code'): #...an asynchronous generator object, or x = x.ag_code elif hasattr(x, 'cr_code'): #...a coroutine. x = x.cr_code # Perform the disassembly. if hasattr(x, '__dict__'): # Class or module items = sorted(x.__dict__.items()) for name, x1 in items: if isinstance(x1, _have_code): print("Disassembly of %s:" % name, file=file) try: dis(x1, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive) except TypeError as msg: print("Sorry:", msg, file=file) print(file=file) elif hasattr(x, 'co_code'): # Code object _disassemble_recursive(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive) elif isinstance(x, (bytes, bytearray)): # Raw bytecode _disassemble_bytes(x, file=file, show_caches=show_caches) elif isinstance(x, str): # Source code _disassemble_str(x, file=file, depth=depth, show_caches=show_caches, adaptive=adaptive) else: raise TypeError("don't know how to disassemble %s objects" % type(x).__name__) def distb(tb=None, *, file=None, show_caches=False, adaptive=False): """Disassemble a traceback (default: last traceback).""" if tb is None: try: tb = sys.last_traceback