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_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_extended_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
SetLineno(1 + 128),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(1 + 129),
ConcreteInstr("LOAD_CONST", 1),
SetLineno(1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
if sys.version_info >= (3, 6):
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 1)
self.assertEqual(code.co_lnotab,
b"\x00\x7f\x02\x01\x02\x01\x00\x80\x02\xff")
else:
with self.assertRaises(ValueError) as cm:
code = concrete.to_code()
self.assertEqual(
str(cm.exception),
"negative line number delta is not supported "
"on Python < 3.6",
)
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_negative_lnotab(self):
# x = 7
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(2),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 5
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 5)
self.assertEqual(code.co_lnotab, b"\x04\xfd")
def test_extended_lnotab2(self):
# x = 7
# 200 blank lines
# y = 8
base_code = compile("x = 7" + "\n" * 200 + "y = 8", "", "exec")
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
ConcreteInstr("STORE_NAME", 0),
SetLineno(201),
ConcreteInstr("LOAD_CONST", 1),
ConcreteInstr("STORE_NAME", 1),
ConcreteInstr("LOAD_CONST", 2),
ConcreteInstr("RETURN_VALUE"),
])
concrete.consts = [None, 7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
code = concrete.to_code()
self.assertEqual(code.co_code, base_code.co_code)
self.assertEqual(code.co_firstlineno, base_code.co_firstlineno)
self.assertEqual(code.co_lnotab, base_code.co_lnotab)
if sys.version_info >= (3, 10):
self.assertEqual(code.co_linetable, base_code.co_linetable)
def test_extended_lnotab(self):
# x = 7
# 200 blank lines
# y = 8
concrete = ConcreteBytecode([
ConcreteInstr("LOAD_CONST", 0),
SetLineno(1 + 128),
ConcreteInstr("STORE_NAME", 0),
# line number goes backward!
SetLineno(1 + 129),
ConcreteInstr("LOAD_CONST", 1),
SetLineno(1),
ConcreteInstr("STORE_NAME", 1),
])
concrete.consts = [7, 8]
concrete.names = ["x", "y"]
concrete.first_lineno = 1
code = concrete.to_code()
expected = b"d\x00Z\x00d\x01Z\x01"
self.assertEqual(code.co_code, expected)
self.assertEqual(code.co_firstlineno, 1)
self.assertEqual(code.co_lnotab,
b"\x02\x7f\x00\x01\x02\x01\x02\x80\x00\xff")
