def _decorator_to_arg(node, resources):
arg_name = def_value = by_value = None
if not len(node.args) == 3:
raise errors.TranslateError(_errormessages.invalid_param_decorator)
# this is a decorator param definition. First parameter is the string for the name.
if utils.is_node_ast_str(node.args[0]):
arg_name = utils.get_value_from_str_node(node.args[0])
# second is the default value
try:
def_value = utils.get_value_from_node(node.args[1], resources)
except errors.TranslateError:
# def_value won't get assigned anything if an error occurs, which will trigger the exception later.
pass
# third is whether to pass by ref or by value
valid_types = [ast.Name, ast.Attribute]
if isinstance(node.args[2], tuple(valid_types)):
by_value_str = utils.get_variable_name_from_node(node.args[2])
by_value_str = getattr(_decorators.NivsParam,
by_value_str.split('.')[-1], by_value_str)
by_value = BooleanValue(by_value_str).value
elif 'NameConstant' in dir(ast) and utils.is_node_ast_nameconstant(
node.args[2]):
by_value = utils.get_value_from_nameconstant_node(node.args[2])
if arg_name is None or def_value is None or by_value is None:
raise errors.TranslateError(_errormessages.invalid_param_decorator)
return _param(arg_name, def_value, by_value)
def test_false_check_returns_true_bool():
if sys.version_info >= (3, 8):
node = ast.Constant(value=False)
res = utils.is_node_ast_nameconstant(node)
assert res is True
def test_complex_2_3_check_returns_false_bool():
if sys.version_info >= (3, 8):
node = ast.Constant(value=complex(2, 3))
res = utils.is_node_ast_nameconstant(node)
assert res is False
def test_str_empty_check_returns_false_bool():
if sys.version_info >= (3, 8):
node = ast.Constant(value="")
res = utils.is_node_ast_nameconstant(node)
assert res is False
def _validate_restrictions(node):
if not isinstance(node.value, ast.Attribute) and \
not utils.is_node_ast_nameconstant(node.value) and \
not utils.is_node_ast_num(node.value):
raise TranslateError(_errormessages.invalid_return_type)
