Function CheckPortRange

tensorflow/core/grappler/mutable_graph_view.cc:316–325

}

Status CheckPortRange(int port, int min, int max, ErrorHandler handler) {
  if (port < min || port > max) {
    if (max < min) {
      return handler("no available ports as node has no regular fanins");
    }
    return handler(
        absl::Substitute("port must be in range [$0, $1]", min, max));
  }
  return Status::OK();
}

string SwapNodeNamesSwitchControlErrorMsg(absl::string_view node_name) {
  return absl::Substitute(