6.2.1 整数字段指令..................................................................................................................................9 6.2.2 十进制数字段指令..........................................................................................................................9 6.2.3 字符串字段指令............................................................................................................................10 6.2.4 字节向量字段指令........................................................................................................................10 6.2.5 序列字段指令................................................................................................................................10 6.2.6 分组字段指令................................................................................................................................10 6.3 字段操作符...............................................................................................................................................11 6.3.1 字典与前值....................................................................................................................................11 6.3.2 初值................................................................................................................................................12 6.3.3 常量操作符....................................................................................................................................12 6.3.4 缺省操作符....................................................................................................................................12 6.3.5 拷贝操作符....................................................................................................................................12 6.3.6 递增操作符....................................................................................................................................12 6.3.7 差值操作符....................................................................................................................................13 6.3.8 接尾操作符....................................................................................................................................14 6.4 模版引用指令...........................................................................................................................................15 7 名称 .....................................................................................................................................................................16 7.1 辅助标识符...............................................................................................................................................16 8 类型转换 .............................................................................................................................................................16 8.1 字符串转换为其他类型...........................................................................................................................16 8.1.1 转换为整数....................................................................................................................................17 8.1.2 转换为十进制数............................................................................................................................17 8.1.3 转换为字节向量............................................................................................................................17 8.1.4 字符集间的相互转换....................................................................................................................17 8.2 整数转换为其他类型...............................................................................................................................17 8.2.1 转换为整数....................................................................................................................................17 8.2.2 转换为十进制数............................................................................................................................17 8.2.3 转换为字符串................................................................................................................................17 8.3 十进制数转换为其他类型.......................................................................................................................17 8.3.1 转换为整数....................................................................................................................................17 8.3.2 转换为字符串................................................................................................................................18 8.4 字节向量转换为字符串...........................................................................................................................18 9 可扩展性 .............................................................................................................................................................18 10 传送编码............................................................................................................................................................18 10.1 字节和位元顺序.....................................................................................................................................19 10.2 停止位编码实体.....................................................................................................................................19 10.3 模版标识符.............................................................................................................................................19 10.4 空值属性.................................................................................................................................................19 10.5 存在图.....................................................................................................................................................19