Code Clone Analysis Environment for Supporting Software Development and Maintenance

摘要

Code clones represent one factor that makes software maintenance difficult. A code clone represents an identical or similar portion in source code. If a bug is present in a code portion, then all of the code clones with that code portion must be considered for revision. However, in a large-scale software system, finding all the sites by hand and evaluating them for revision is extremely difficult. In this paper, the authors develop Gemini, a code clone analysis environment, which uses the results of detection from a code clone detection tool, CCFinder. In the authors' system, functions to visualize position information for code clones, to calculate metrics values for code clones, and to reference the corresponding source code are available to support the use of code clones in development and maintenance. In a case study using the system, the authors confirmed that characteristic code clones can be extracted.