code: public static String render(Segment tableName) {
          Object obj = get();
          if (null == obj || !tableName.hasKey())
              return tableName.toString();
  
          Context context = Lang.context();
          if (isPrimitive(obj)) {
              for (String key : tableName.keys())
                  context.set(key, obj);
          } else if (obj instanceof Context) {
              for (String key : tableName.keys())
                  context.set(key, ((Context) obj).get(key));
          } else if (obj instanceof Map<?, ?>) {
              for (String key : tableName.keys())
                  context.set(key, ((Map<?, ?>) obj).get(key));
          } else {
              Mirror<?> mirror = Mirror.me(obj);
              for (String key : tableName.keys())
                  context.set(key, mirror.getValue(obj, key));
          }
          return tableName.render(context).toString();
      }
docs: 根据当前线程的参考对象，渲染一个动态表名
  
  @param tableName
  动态表名
  @return 渲染后的表名