Method node

include/sonic/dom/handler.h:194–201

#undef SONIC_ADD_NODE

  sonic_force_inline bool node() noexcept {
    if (sonic_likely(np_ < cap_)) {
      np_++;
      return true;
    } else {
      return false;
    }
  }

  NodeType *st_{nullptr};
  size_t np_{0};