Abstract
The primary goal is to improve readability and maintainability through reconfiguration of source code without changing function for system refactoring. In refactoring, which is designed for system optimization, the ability to extract duplicated code from scattered code is essential. Such extraction from duplicated code can be used for crosscutting concern, and system optimization can be done through crosscutting concern within Aspect-Oriented Programming. This research paper is for proposal of aspect refactoring for system optimization. To extract duplicated code, which is main target of refactoring, architectural-relation factor is to be extracted through system dependency graph and data dependency relation. By comparing node relation orders from program dependency graph, it is possible to satisfy crosscutting concern for refactoring. After testing system optimization by applying aspect refactoring techniques to Bison 1.25, length, and volume of original module has reduced by 8% and 6% each.
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