![]() We provide experimental results demonstrating the efficacy of our technique (originally appeared in the Proceedings of Fundamental Approaches to Software Engineering-20th International Conference, FASE 2017, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2017, Uppsala, Sweden, April 22–29, 2017). Legacy object-oriented code may be accompanied by high-level documentation and/or descriptive comments in the source code, each of which may contain omissions or erroneous information. ![]() As documentation erodes, an engineer can trust only the source code. A necessary component of software archeology in object-oriented systems is the interactions among objects. A sequence diagram is a visual representation of those object interactions as well as their lifelines. Sequence diagrams generated from legacy code are independent of existing documentation. Dynamic techniques for generation of sequence diagrams from legacy code can synthesize a subset of all possible sequence diagrams based on runtime traces. The capability of purely dynamic reverse-engineering techniques to produce useful diagrams depends on the quality of the executions. ![]() In particular, one may need a large number of executions with sufficient diversity to cover the space of interactions. Existing static techniques result in sequence diagrams that replicate the original legacy source code, including conditionals and loops, without providing further intuitive notions beyond the code itself. Hybrid techniques like combine static and dynamic analysis. Information extracted from an accurate static analysis framework can guide the executions during the dynamic stage. ![]() 1, for static generation of UML sequence diagrams Footnote 1 together with a query system to guide the user to the most interesting interactions in the (unobfuscated) source code Footnote 2 Given an existing object-oriented code base as input, our technique involves three distinct steps as shown in Fig. ![]()
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