CSC/ECE 517 Fall 2009/wiki3 2 clone: Difference between revisions
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== Clone Detection == | == Clone Detection == | ||
"Software clones are segments of code that are similar according to some definition of similarity" —Ira Baxter, 2002[1]. As per this definition, two code snippets may be similar based on text, syntactic structure or semantics or if they follow same pattern. | "Software clones are segments of code that are similar according to some definition of similarity" —Ira Baxter, 2002[1]. As per this definition, two code snippets may be similar based on text, syntactic structure or semantics or if they follow same pattern. Two code fragments are similar if their program text is similar. Code snippets may not be semantically equivalent. Such code snippets are also termed as redundant because if one changes then the other also needs to be changed. However, some clones cannot be replaced by another for example, two code snippets may be identical at the textual level but they refer to different variables declared in different places with the same name. Example of such clones is shown below: | ||
== Clone Manipulation == | == Clone Manipulation == | ||
Revision as of 01:20, 18 November 2009
Clone Detection and Clone Manipulation
Clone Detection
"Software clones are segments of code that are similar according to some definition of similarity" —Ira Baxter, 2002[1]. As per this definition, two code snippets may be similar based on text, syntactic structure or semantics or if they follow same pattern. Two code fragments are similar if their program text is similar. Code snippets may not be semantically equivalent. Such code snippets are also termed as redundant because if one changes then the other also needs to be changed. However, some clones cannot be replaced by another for example, two code snippets may be identical at the textual level but they refer to different variables declared in different places with the same name. Example of such clones is shown below:
Clone Manipulation
Clone Detection Tools
Comparing With Refactoring
Conclusion
See Also
References
1. http://drops.dagstuhl.de/opus/volltexte/2007/962/pdf/06301.KoschkeRainer.962.pdf