def _call_eager(self, expr: E.Apply, arguments: List[V.Base]) -> V.Base:
arr = arguments[0]
assert isinstance(arr, V.Array)
for arg in arr.value:
if not isinstance(arg, V.Null):
return arg
raise Error.NullValue(expr)
def eval(self, env: Env.Values) -> V.Base:
""
try:
if self.condition.eval(env).expect(T.Boolean()).value:
ans = self.consequent.eval(env)
else:
ans = self.alternative.eval(env)
return ans
except ReferenceError:
raise Error.NullValue(self) from None
