def test_legalize(self): concrete = ConcreteBytecode() concrete.first_lineno = 3 concrete.consts = [7, 8, 9] concrete.names = ["x", "y", "z"] concrete.extend([ ConcreteInstr("LOAD_CONST", 0), ConcreteInstr("STORE_NAME", 0), ConcreteInstr("LOAD_CONST", 1, lineno=4), ConcreteInstr("STORE_NAME", 1), SetLineno(5), ConcreteInstr("LOAD_CONST", 2, lineno=6), ConcreteInstr("STORE_NAME", 2), ]) concrete.legalize() self.assertListEqual( list(concrete), [ ConcreteInstr("LOAD_CONST", 0, lineno=3), ConcreteInstr("STORE_NAME", 0, lineno=3), ConcreteInstr("LOAD_CONST", 1, lineno=4), ConcreteInstr("STORE_NAME", 1, lineno=4), ConcreteInstr("LOAD_CONST", 2, lineno=5), ConcreteInstr("STORE_NAME", 2, lineno=5), ], )
def test_to_bytecode_consts(self): # x = -0.0 # x = +0.0 # # code optimized by the CPython 3.6 peephole optimizer which emits # duplicated constants (0.0 is twice in consts). code = ConcreteBytecode() code.consts = [0.0, None, -0.0, 0.0] code.names = ["x", "y"] code.extend([ ConcreteInstr("LOAD_CONST", 2, lineno=1), ConcreteInstr("STORE_NAME", 0, lineno=1), ConcreteInstr("LOAD_CONST", 3, lineno=2), ConcreteInstr("STORE_NAME", 1, lineno=2), ConcreteInstr("LOAD_CONST", 1, lineno=2), ConcreteInstr("RETURN_VALUE", lineno=2), ]) code = code.to_bytecode().to_concrete_bytecode() # the conversion changes the constant order: the order comes from # the order of LOAD_CONST instructions self.assertEqual(code.consts, [-0.0, 0.0, None]) code.names = ["x", "y"] self.assertListEqual( list(code), [ ConcreteInstr("LOAD_CONST", 0, lineno=1), ConcreteInstr("STORE_NAME", 0, lineno=1), ConcreteInstr("LOAD_CONST", 1, lineno=2), ConcreteInstr("STORE_NAME", 1, lineno=2), ConcreteInstr("LOAD_CONST", 2, lineno=2), ConcreteInstr("RETURN_VALUE", lineno=2), ], )
def test_to_code_lnotab(self): # We use an actual function for the simple case to # ensure we get lnotab right def f(): # # x = 7 # noqa y = 8 # noqa z = 9 # noqa fl = f.__code__.co_firstlineno concrete = ConcreteBytecode() concrete.consts = [None, 7, 8, 9] concrete.varnames = ["x", "y", "z"] concrete.first_lineno = fl concrete.extend([ SetLineno(fl + 3), ConcreteInstr("LOAD_CONST", 1), ConcreteInstr("STORE_FAST", 0), SetLineno(fl + 4), ConcreteInstr("LOAD_CONST", 2), ConcreteInstr("STORE_FAST", 1), SetLineno(fl + 5), ConcreteInstr("LOAD_CONST", 3), ConcreteInstr("STORE_FAST", 2), ConcreteInstr("LOAD_CONST", 0), ConcreteInstr("RETURN_VALUE"), ]) code = concrete.to_code() self.assertEqual(code.co_code, f.__code__.co_code) self.assertEqual(code.co_lnotab, f.__code__.co_lnotab) if sys.version_info >= (3, 10): self.assertEqual(code.co_linetable, f.__code__.co_linetable)
def test_setlineno(self): # x = 7 # y = 8 # z = 9 concrete = ConcreteBytecode() concrete.consts = [7, 8, 9] concrete.names = ["x", "y", "z"] concrete.first_lineno = 3 concrete.extend([ ConcreteInstr("LOAD_CONST", 0), ConcreteInstr("STORE_NAME", 0), SetLineno(4), ConcreteInstr("LOAD_CONST", 1), ConcreteInstr("STORE_NAME", 1), SetLineno(5), ConcreteInstr("LOAD_CONST", 2), ConcreteInstr("STORE_NAME", 2), ]) code = concrete.to_bytecode() self.assertEqual( code, [ Instr("LOAD_CONST", 7, lineno=3), Instr("STORE_NAME", "x", lineno=3), Instr("LOAD_CONST", 8, lineno=4), Instr("STORE_NAME", "y", lineno=4), Instr("LOAD_CONST", 9, lineno=5), Instr("STORE_NAME", "z", lineno=5), ], )
def test_to_code_lnotab(self): # x = 7 # y = 8 # z = 9 concrete = ConcreteBytecode() concrete.consts = [7, 8, 9] concrete.names = ["x", "y", "z"] concrete.first_lineno = 3 concrete.extend([ ConcreteInstr("LOAD_CONST", 0), ConcreteInstr("STORE_NAME", 0), SetLineno(4), ConcreteInstr("LOAD_CONST", 1), ConcreteInstr("STORE_NAME", 1), SetLineno(5), ConcreteInstr("LOAD_CONST", 2), ConcreteInstr("STORE_NAME", 2), ]) code = concrete.to_code() if WORDCODE: expected = b"d\x00Z\x00d\x01Z\x01d\x02Z\x02" else: expected = (b"d\x00\x00" b"Z\x00\x00" b"d\x01\x00" b"Z\x01\x00" b"d\x02\x00" b"Z\x02\x00") self.assertEqual(code.co_code, expected) self.assertEqual(code.co_firstlineno, 3) self.assertEqual( code.co_lnotab, b"\x04\x01\x04\x01" if WORDCODE else b"\x06\x01\x06\x01")
def test_copy(self): concrete = ConcreteBytecode() concrete.first_lineno = 3 concrete.consts = [7, 8, 9] concrete.names = ["x", "y", "z"] concrete.extend([ ConcreteInstr("LOAD_CONST", 0), ConcreteInstr("STORE_NAME", 0), SetLineno(4), ConcreteInstr("LOAD_CONST", 1), ConcreteInstr("STORE_NAME", 1), SetLineno(5), ConcreteInstr("LOAD_CONST", 2), ConcreteInstr("STORE_NAME", 2), ]) self.assertEqual(concrete, concrete.copy())
def test_load_classderef(self): concrete = ConcreteBytecode() concrete.cellvars = ["__class__"] concrete.freevars = ["__class__"] concrete.extend([ ConcreteInstr("LOAD_CLASSDEREF", 1), ConcreteInstr("STORE_DEREF", 1) ]) bytecode = concrete.to_bytecode() self.assertEqual(bytecode.freevars, ["__class__"]) self.assertEqual(bytecode.cellvars, ["__class__"]) self.assertEqual( list(bytecode), [ Instr("LOAD_CLASSDEREF", FreeVar("__class__"), lineno=1), Instr("STORE_DEREF", FreeVar("__class__"), lineno=1), ], ) concrete = bytecode.to_concrete_bytecode() self.assertEqual(concrete.freevars, ["__class__"]) self.assertEqual(concrete.cellvars, ["__class__"]) self.assertEqual( list(concrete), [ ConcreteInstr("LOAD_CLASSDEREF", 1, lineno=1), ConcreteInstr("STORE_DEREF", 1, lineno=1), ], ) code = concrete.to_code() self.assertEqual(code.co_freevars, ("__class__", )) self.assertEqual(code.co_cellvars, ("__class__", )) self.assertEqual( code.co_code, b"\x94\x01\x89\x01", )