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Linking Formal Methods in Software Development

A Reflection on the Development of rCOS

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Theories of Programming and Formal Methods

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 14080))

Abstract

The method of refinement of object-oriented and component-based systems (rCOS) has been developed based on the Unifying Theories of Programming (UTP) of Tony Hoare and Jifeng He. It is influenced by the doctrine of institutions, espoused by Joseph Goguen and Rod Burstall, for linking specification languages and verification techniques to support model-driven development of software systems. The research on rCOS has produced a body of knowledge and techniques, including the formal use of the Unified Modelling Language (UML), a theory of semantics and refinement of object-oriented programs, a theory of semantics and refinement of the component-based architecture of software systems, and prototypes of model-driven tools. These have been published in a number of papers and embodied in several lecture notes taught at many classes and training schools. In this Festschrift paper, I reflect on the research in the development of rCOS by giving a summary of the results with discussions on the fundamental ideas, the way it has been developed, its current status, and where it may take us in the future.

Supported by the Chinese National NSF grant (No. 62032019) and the Southwest University Research Development grant (No. SWU116007).

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Notes

  1. 1.

    More mathematically, the decoration \('\) is a bijective mapping from X to \(X'\).

  2. 2.

    On terminologies, variables, values, operations and operators are included in the alphabet of a formal logic system; and they are included in the signature in the theory of institutions.

  3. 3.

    Thanks to Cliff Jones for his support. He was our referee who we were allowed to recommend in the application.

  4. 4.

    Xiaoshan was a mutual friend and close collaborator of Jifeng and me at the University of Macao and, sadly, passed away too young a few years ago.

  5. 5.

    There was even a “Rigorous UML Group”, although its members were not necessarily from the formal method community.

  6. 6.

    What a nice coincidence it is that there are 80 references in this paper to celebrate Jifeng’s 80th birthday.

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Acknowledgements

There is a long list of names of collaborators who have contributed to the research on rCOS and I would like to thank them. In alphabetic order, the list includes Xin Chen, Zhenbang Chen, Ruzhen Dong, Dan Van Hung, Bin Lei, Dan Li, , Jing Liu, Quan Long, Charles Morriset, Zongyan Qiu, , Martin Schäf, Leila Silva, Volker Stolz, Shuling Wang, Ji Wang, Jing Yang, Lu Yang, Yilong Yang, Naijun Zhan, Miaomiao Zhang, Liang Zhao. They all spent time at UNU-IIST, at different periods, as fellows, PhD students, postdoctoral research fellows, or visitors. We all owe a big thanks to Jifeng for his guidance and/or influence over the years. We all congratulate him on his academic achievements, and wish him a very happy 80th birthday!

I would also like to thank Jonathan Bowen and Shmuel Tyszberowicz for their careful reading and comments on draft versions of this paper.

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    Zhiming Liu

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    Jonathan P. Bowen

  2. East China Normal University, Shanghai, China

    Qin Li

  3. University of Macau, Macau, China

    Qiwen Xu

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Liu, Z. (2023). Linking Formal Methods in Software Development. In: Bowen, J.P., Li, Q., Xu, Q. (eds) Theories of Programming and Formal Methods. Lecture Notes in Computer Science, vol 14080. Springer, Cham. https://doi.org/10.1007/978-3-031-40436-8_3

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