## TODO: Implement ctor with va arg to
## initialize, fields.

class _Vec
  x = 0
  y = 0
end

def Vec(x, y)
  ret = _Vec()
  ret.x = x; ret.y = y
  return ret
end

def vecAdd(v1, v2)
  return Vec(v1.x + v2.x,
             v1.y + v2.y)
end

v1 = Vec(1, 2); assert(v1.x == 1 and v1.y == 2)
v2 = Vec(3, 4); assert(v2.x == 3 and v2.y == 4)

v3 = vecAdd(v1, v2)
assert(v3.x == 4 and v3.y == 6)

class Test
  fn  = null
  val = Vec(12, 32)
end

test = Test()
test.fn = to_string
res = test.fn(test.val)
assert(res == "[_Vec: x=12, y=32]")