Clone detection and elimination for Haskell

Duplicated code is a well known problem in software maintenance and refactoring. Code clones tend to increase program size and several studies have shown that duplicated code makes maintenance and code understanding more complex and time consuming. This paper presents a new technique for the detection and removal of duplicated Haskell code. The system is implemented within the refactoring framework of the Haskell Refactorer (HaRe), an Abstract Syntax Tree (AST) based approach. Detection of duplicate code is automatic, while elimination is semi-automatic, with the user managing the clone removal. After presenting the system, an example is given to show how it works in practice. Categories and Subject Descriptors D.2.3 [SOFTWARE ENGINEERING]: Coding Tools and Techniques; D.2.6 []: Programming Environments; D.2.7 []: Distribution, Maintenance, and Enhancement; D.3.2 [PROGRAMMING LANGUAGES]: Language Classifications — Applicative (functional) languages General Terms Languages, Design K...

• Type: Conference
• Year: 2010
• Where: PEPM
• Authors: Christopher Brown, Simon Thompson
• Keywords: Code Clones, Code Makes Maintenance, Duplicated Haskell Code, PEPM 2010, Software Engineering