An Overview of Structural and

One of the most promising ways to make the population of a repository of reusable assets cost eeective and to obtain useful results in the short time is by extracting and reengineering them from existing software. A reuse reengineering process consists of the set of activities for identifying software components implementing abstractions, reengineering them according to a predeened template, associating them with their interface and functional speciication and populating a repository with the reusable assets so obtained. Code scavenging consists in searching existing software systems for source code components that implement software abstractions. We present an overview of code scavenging techniques with reference to the rst phase of the RE 2 project reference paradigm for setting up reuse reengineering processes. Several program representations proposed in the literature for software maintenance and in particular useful for reverse engineering and reengineering are also described.