IDEALS Home University of Illinois at Urbana-Champaign logo The Alma Mater The Main Quad

Using Continuous Code Change Analysis to Understand the Practice of Refactoring

Show simple item record

Bookmark or cite this item: http://hdl.handle.net/2142/33783

Files in this item

File Description Format
PDF UnderstandingRefractoring Practice.pdf (572KB) PDF
Title: Using Continuous Code Change Analysis to Understand the Practice of Refactoring
Author(s): Negara, Stas; Chen, Nicholas; Vakilian, Mohsen; Johnson, Ralph E.; Dig, Danny
Subject(s): refactoring inference code evolution manual refactoring automated refactoring practice of refactoring
Abstract: Despite the enormous success that manual and automated refactoring has enjoyed during the last decade, we know little about the practice of refactoring. Understanding the refactoring practice is important for developers, refactoring tool builders, and researchers. Many previous approaches to study refactorings are based on comparing code snapshots, which is imprecise, incomplete, and does not allow answering research questions that involve time or compare manual and automated refactoring. We present the first extended empirical study that considers both manual and automated refactoring. This study is enabled by our algorithm, which infers refactorings from continuous changes. We implemented and applied this algorithm to the code evolution data collected from 23 developers working in their natural environment for 1,520 hours. Using a corpus of 5,371 refactorings, we reveal several new facts about manual and automated refactorings. For example, more than a half of the refactorings were performed manually. The popularity of automated and manual refactorings differs. More than one third of the refactorings performed by developers are clustered. For some refactoring kinds, up to 64% of performed refactorings do not reach the Version Control System.
Issue Date: 2012-08-18
Genre: Technical Report
Type: Text
Language: English
URI: http://hdl.handle.net/2142/33783
Publication Status: published or submitted for publication
Peer Reviewed: not peer reviewed
Date Available in IDEALS: 2012-08-18
 

This item appears in the following Collection(s)

Show simple item record

Item Statistics

  • Total Downloads: 159
  • Downloads this Month: 3
  • Downloads Today: 0

Browse

My Account

Information

Access Key