def _args_to_val(self, func, args):
"""Helper for GQL parsing to extract values from GQL expressions.
This can extract the value from a GQL literal, return a Parameter
for a GQL bound parameter (:1 or :foo), and interprets casts like
KEY(...) and plain lists of values like (1, 2, 3).
Args:
func (str): A string indicating what kind of thing this is.
args list[Union[int, str, Literal]]: One or more GQL values, each
integer, string, or GQL literal.
"""
vals = []
for arg in args:
if isinstance(arg, six.string_types + six.integer_types):
val = query_module.Parameter(arg)
else:
val = arg.Get()
vals.append(val)
if func == "nop":
return vals[0] # May be a Parameter
pfunc = query_module.ParameterizedFunction(func, vals)
if pfunc.is_parameterized():
return pfunc
return pfunc.resolve({}, {})
def test_constructor():
with pytest.raises(NotImplementedError):
query.ParameterizedFunction()