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TRANSCRIPT
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CReN: A Tool for Tracking Copy-and-Paste Code Clones and Renaming Identifiers Consistently in the IDE
By
Patricia Jablonskiand Daqing Hou
Clarkson University
Eclipse Technology Exchange
October 21, 2007
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Managing Copy-and-Paste
Problem
Copy and paste code
Change some variables
Don’t change all instances
So, have an error
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Copy-and-Paste Error Detection and Prevention
CnP: Copy-and-Paste Tool
Tracks & highlights copy-pasted statements
Detects & prevents inconsistencies based on inferences of the programmer’s intention
Identifier renaming inconsistencies CReN: Consistent Renaming Tool
Lexical/naming pattern inconsistencies
Type inconsistencies
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Related Work
Clone detection and removal
Clone tracking tools Codelink, CloneTracker
Error detection tools CP-Miner, DECKARD-based tool
Renaming tools Find & Replace, Rename Refactoring, Linked
Renaming
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Conclusion
Discussion
How would you evaluate our tool?
How would you improve the tool? Additional features Visualization of clones Programmer’s intention
Questions/Comments