This thesis designed, implemented and described a prototype in the field of code transformation for the duplicated code. It analyses the clone pairs, which were saved as attributes in the IML_Graphs, generates new functions or macros for the clone codes according to the predifined transformation rules, then displays the new functions/macros and replaces the duplicated code with the calls to them. The programming languages in the work are Ada95 and Emacs Lisp.

The work can be divided into three parts. First is to extend the code clone detection tool - CCDIML; then the clone list from CCDIML will be analyzed and transformed to new functions/macros; the last step is to replace the duplicated code with calls of the functions/macros. The correctness and precision of the replacement of clones depends on the reulst of the clone detection, so the work can be further enhanced in collaboration with the improvement of CCDIML.