Function array_iterator_func

src/PyBytesProxyHandler.cc:194–231

private util

/// private util
static bool array_iterator_func(JSContext *cx, unsigned argc, JS::Value *vp, int itemKind) {
  JS::CallArgs args = JS::CallArgsFromVp(argc, vp);

  JS::RootedObject proxy(cx, JS::ToObject(cx, args.thisv()));
  if (!proxy) {
    return false;
  }

  JS::RootedObject global(cx, JS::GetNonCCWObjectGlobal(proxy));

  JS::RootedValue constructor_val(cx);
  if (!JS_GetProperty(cx, global, "BytesIterator", &constructor_val)) return false;
  if (!constructor_val.isObject()) {
    if (!DefineBytesIterator(cx, global)) {
      return false;
    }

    if (!JS_GetProperty(cx, global, "BytesIterator", &constructor_val)) return false;
    if (!constructor_val.isObject()) {
      JS_ReportErrorASCII(cx, "BytesIterator is not a constructor");
      return false;
    }
  }
  JS::RootedObject constructor(cx, &constructor_val.toObject());

  JS::RootedObject obj(cx);
  if (!JS::Construct(cx, constructor_val, JS::HandleValueArray::empty(), &obj)) return false;
  if (!obj) return false;

  JS::PersistentRootedObject *arrayBuffer = JS::GetMaybePtrFromReservedSlot<JS::PersistentRootedObject>(proxy, OtherSlot);

  JS::SetReservedSlot(obj, BytesIteratorSlotIteratedObject, JS::PrivateValue(arrayBuffer));
  JS::SetReservedSlot(obj, BytesIteratorSlotNextIndex, JS::Int32Value(0));
  JS::SetReservedSlot(obj, BytesIteratorSlotItemKind, JS::Int32Value(itemKind));

  args.rval().setObject(*obj);
  return true;
}

static bool array_entries(JSContext *cx, unsigned argc, JS::Value *vp) {
  return array_iterator_func(cx, argc, vp, ITEM_KIND_KEY_AND_VALUE);