We describe JunGL, a language to script refactoring transformations. It manipulates a graph representation of the program, including extensible semantic information such as variable binding and dataflow. JunGL enables the full automation of complex refactorings: finding program elements of interest, checking preconditions and performing the transformation itself.

 @inproceedings{oopsla06jungl, 
    author = "Mathieu Verbaere and Arnaud Payement and Oege de Moor",
    title = "Scripting refactorings with {\em JunGL}",
    booktitle = "OOPSLA '06: Companion to the 21th ACM SIGPLAN conference on 
                 Object-oriented programming languages, systems, and applications",
    year = "2006",
    isbn = "1-59593-491-X",
    pages = "651--652",
    location = "Portland, Oregon, USA",
    doi = "http://doi.acm.org/10.1145/1176617.1176656",
    publisher = "ACM Press",
    address = "New York, NY, USA",
 }