def test_label2(self):
bytecode = Bytecode()
label = Label()
bytecode.extend([
Instr("LOAD_NAME", "test", lineno=1),
Instr("POP_JUMP_IF_FALSE", label),
Instr("LOAD_CONST", 5, lineno=2),
Instr("STORE_NAME", "x"),
Instr("JUMP_FORWARD", label),
Instr("LOAD_CONST", 7, lineno=4),
Instr("STORE_NAME", "x"),
label,
Instr("LOAD_CONST", None),
Instr("RETURN_VALUE"),
])
concrete = bytecode.to_concrete_bytecode()
expected = [
ConcreteInstr("LOAD_NAME", 0, lineno=1),
ConcreteInstr("POP_JUMP_IF_FALSE",
14 if WORDCODE else 21,
lineno=1),
ConcreteInstr("LOAD_CONST", 0, lineno=2),
ConcreteInstr("STORE_NAME", 1, lineno=2),
ConcreteInstr("JUMP_FORWARD", 4 if WORDCODE else 6, lineno=2),
ConcreteInstr("LOAD_CONST", 1, lineno=4),
ConcreteInstr("STORE_NAME", 1, lineno=4),
ConcreteInstr("LOAD_CONST", 2, lineno=4),
ConcreteInstr("RETURN_VALUE", lineno=4),
]
self.assertListEqual(list(concrete), expected)
self.assertListEqual(concrete.consts, [5, 7, None])
self.assertListEqual(concrete.names, ["test", "x"])
self.assertListEqual(concrete.varnames, [])
def test_setlineno(self):
# x = 7
# y = 8
# z = 9
code = Bytecode()
code.first_lineno = 3
code.extend([
Instr("LOAD_CONST", 7),
Instr("STORE_NAME", "x"),
SetLineno(4),
Instr("LOAD_CONST", 8),
Instr("STORE_NAME", "y"),
SetLineno(5),
Instr("LOAD_CONST", 9),
Instr("STORE_NAME", "z"),
])
concrete = code.to_concrete_bytecode()
self.assertEqual(concrete.consts, [7, 8, 9])
self.assertEqual(concrete.names, ["x", "y", "z"])
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_cellvars(self):
code = Bytecode()
code.cellvars = ["x"]
code.freevars = ["y"]
code.extend([
Instr("LOAD_DEREF", CellVar("x"), lineno=1),
Instr("LOAD_DEREF", FreeVar("y"), lineno=1),
])
concrete = code.to_concrete_bytecode()
self.assertEqual(concrete.cellvars, ["x"])
self.assertEqual(concrete.freevars, ["y"])
code.extend([
ConcreteInstr("LOAD_DEREF", 0, lineno=1),
ConcreteInstr("LOAD_DEREF", 1, lineno=1),
])
def test_label(self):
code = Bytecode()
label = Label()
code.extend([
Instr("LOAD_CONST", "hello", lineno=1),
Instr("JUMP_FORWARD", label, lineno=1),
label,
Instr("POP_TOP", lineno=1),
])
code = code.to_concrete_bytecode()
expected = [
ConcreteInstr("LOAD_CONST", 0, lineno=1),
ConcreteInstr("JUMP_FORWARD", 0, lineno=1),
ConcreteInstr("POP_TOP", lineno=1),
]
self.assertListEqual(list(code), expected)
self.assertListEqual(code.consts, ["hello"])
def test_dont_merge_constants(self):
# test two constants which are equal but have a different type
code = Bytecode()
code.extend([
Instr("LOAD_CONST", 5, lineno=1),
Instr("LOAD_CONST", 5.0, lineno=1),
Instr("LOAD_CONST", -0.0, lineno=1),
Instr("LOAD_CONST", +0.0, lineno=1),
])
code = code.to_concrete_bytecode()
expected = [
ConcreteInstr("LOAD_CONST", 0, lineno=1),
ConcreteInstr("LOAD_CONST", 1, lineno=1),
ConcreteInstr("LOAD_CONST", 2, lineno=1),
ConcreteInstr("LOAD_CONST", 3, lineno=1),
]
self.assertListEqual(list(code), expected)
self.assertListEqual(code.consts, [5, 5.0, -0.0, +0.0])
def test_jumps(self):
# if test:
# x = 12
# else:
# x = 37
code = Bytecode()
label_else = Label()
label_return = Label()
code.extend([
Instr("LOAD_NAME", "test", lineno=1),
Instr("POP_JUMP_IF_FALSE", label_else),
Instr("LOAD_CONST", 12, lineno=2),
Instr("STORE_NAME", "x"),
Instr("JUMP_FORWARD", label_return),
label_else,
Instr("LOAD_CONST", 37, lineno=4),
Instr("STORE_NAME", "x"),
label_return,
Instr("LOAD_CONST", None, lineno=4),
Instr("RETURN_VALUE"),
])
code = code.to_concrete_bytecode()
expected = [
ConcreteInstr("LOAD_NAME", 0, lineno=1),
ConcreteInstr("POP_JUMP_IF_FALSE",
5 if OFFSET_AS_INSTRUCTION else 10,
lineno=1),
ConcreteInstr("LOAD_CONST", 0, lineno=2),
ConcreteInstr("STORE_NAME", 1, lineno=2),
ConcreteInstr("JUMP_FORWARD",
2 if OFFSET_AS_INSTRUCTION else 4,
lineno=2),
ConcreteInstr("LOAD_CONST", 1, lineno=4),
ConcreteInstr("STORE_NAME", 1, lineno=4),
ConcreteInstr("LOAD_CONST", 2, lineno=4),
ConcreteInstr("RETURN_VALUE", lineno=4),
]
self.assertListEqual(list(code), expected)
self.assertListEqual(code.consts, [12, 37, None])
self.assertListEqual(code.names, ["test", "x"])
self.assertListEqual(code.varnames, [])