Program Comprehension in a Reuse Reengineering Environment
نویسنده
چکیده
Program comprehension is the most expensive activity of software maintenance. The diierent phases of a reuse reengineering process involves comprehension activities for understanding the structure of existing systems, the functionality implemented by a reuse-candidate module and the reengineering eeort. We present an integrated environment implemented in Prolog for reuse reengineering existing C systems. Diierent tools developed in the RE 2 project are integrated in the environment through sharing a ne-grained representation for C program, the Combined C Graph (CCG). Diierent views of a system can be abstracted and visualised from the database of Prolog facts implementing its CCG representation. Software metric tools evaluate the reengineering costs, while reengineering operations are expressed as transformation rules and a symbolic executor allows the production of the module's speciication.
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