| 面向对象Z的子类型继承和推理规则 |
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| 引用本文： | 王云峰,李必信,郑国梁.面向对象Z的子类型继承和推理规则[J].软件学报,2000,11(4):481-486. |
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| 作者姓名： | 王云峰 李必信 郑国梁 |
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| 作者单位： | 1. 南京大学计算机软件新技术国家重点实验室,南京,210093;解放军理工大学气象学院,南京,211101
2. 南京大学计算机软件新技术国家重点实验室,南京,210093 |
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| 基金项目： | 本文研究得到国家自然科学基金（No.69673006)和国家“九五”科技攻关项目基金（No.98-780-01-07-06）资助. |
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| 摘 要： | 讨论了COOZ(complete object-oriented Z)中的继承关系,将继承分为增量继承和子类型化继承,并重点讨论了子类型化继承.定义了一种行为子类型化继承,证明了该方法的合理性,并据此定义了COOZ的规约继承及规约继承的推理规则.所讨论的子类型化方法与E.Cusack等人的方法相比,具有可构造性,并且比Liskov等人的方法具有更大的灵活性.
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| 关 键 词： | 形式方法 面向对象 继承 子类型 形式规约. |
| 收稿时间： | 1998/12/22 0:00:00 |
| 修稿时间： | 1999/4/12 0:00:00 |
On Subtyping Inheritance and Inference Rules in Object-Oriented Z |
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| WANG Yun-feng,LI Bi-xin and ZHENG Guo-liang.On Subtyping Inheritance and Inference Rules in Object-Oriented Z[J].Journal of Software,2000,11(4):481-486. |
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| Authors: | WANG Yun-feng LI Bi-xin and ZHENG Guo-liang |
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| Abstract: | The inheritance relation of COOZ is discussed. It is divided into increasing inheritance and subtyping inheritance. The latter is studied and a behavioral subtyping inheritance is defined, by which the specification inheritance and its inference rules are defined. The soundness of the method is proved. The offered method is constructive compared with that of E. Cusack and is more flexible than that of Liskov et al. |
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| Keywords: | Formal method object oriented inheritance subtyping formal specification |
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