nac3-spec/toy-impl/examples/a.py

I = TypeVar('I', int32, float, Vec)

class Vec:
    v: list[int32]
    def __init__(self, v: list[int32]):
        self.v = v

    def __add__(self, other: I) -> Vec:
        if type(other) == int32:
            return Vec([v + other for v in self.v])
        elif type(other) == float:
            return Vec([v + int32(other) for v in self.v])
        else:
            return Vec([self.v[i] + other.v[i] for i in range(len(self.v))])


T = TypeVar('T', int32, list[int32])

def add(a: int32, b: T) -> int32:
    if type(b) == int32:
        return a + b
    else:
        for x in b:
            a = add(a, x)
        return a