Function array_shift

src/PyListProxyHandler.cc:127–153

}

static bool array_shift(JSContext *cx, unsigned argc, JS::Value *vp) {
  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);

  JS::RootedObject proxy(cx, JS::ToObject(cx, args.thisv()));
  if (!proxy) {
    return false;
  }
  PyObject *self = JS::GetMaybePtrFromReservedSlot<PyObject>(proxy, PyObjectSlot);

  Py_ssize_t selfSize = PyList_GET_SIZE(self);

  if (selfSize == 0) {
    args.rval().setUndefined();
    return true;
  }

  PyObject *result = PyList_GetItem(self, 0);
  if (!result) {
    return false;
  }
  if (PySequence_DelItem(self, 0) < 0) {
    return false;
  }

  args.rval().set(jsTypeFactory(cx, result));
  return true;
}

static bool array_unshift(JSContext *cx, unsigned argc, JS::Value *vp) { // surely the function name is in there...review JSAPI examples
  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);