def test_skip_operation():
start_ast = [
parser.AssignOp("inbox", "emp"),
parser.JumpOp("label"),
parser.OutboxOp(),
parser.LabelStmt("label"),
parser.AddOp("tmp")
]
expected_ast = [
parser.AssignOp("inbox", "emp"),
parser.JumpOp("label"),
parser.LabelStmt("label"),
parser.AddOp("tmp")
]
ast = remove_unreachable_code(start_ast)
assert ast == expected_ast
def test_jcond_no_jump_in_false():
start_ast = [
parser.AssignOp("inbox", "emp"),
parser.JumpCondOp(condition="ez", label_name="truebranch"),
parser.OutboxOp(),
parser.LabelStmt("truebranch"),
parser.AddOp("tmp")
]
ast = remove_unreachable_code(start_ast)
assert ast == start_ast
def test_add_addressed_tilealias():
code = [
parser.AliasStmt(tile_no="3", symbolic_name="myTile"),
parser.AssignOp("inbox", "emp"),
parser.AssignOp("emp", "myTile"),
parser.AddOp(parser.AddressOf("myTile"))
]
assert get_assembly(code) == [
{"operation": "inbox"},
{"operation": "copyto", "operand": {"Cell": 3}},
{"operation": "add", "operand": {"Address": 3}}
]
def test_add_undefined_addressOfAlias():
code = [parser.AddOp(parser.AddressOf("myTile"))]
with pytest.raises(ValueError):
get_assembly(code)
def test_add_addressed_tilenumber():
code = [parser.AddOp(parser.AddressOf("3"))]
assert get_assembly(code) == [{"operation": "add", "operand": {"Address": 3}}]
def test_add_tilenumber():
code = [parser.AddOp("3")]
assert get_assembly(code) == [{"operation": "add", "operand": {"Cell": 3}}]