Optimizing JML Features Compilation in Ajmlc Using Aspect-Oriented Refactorings

In previous work we presented a new JML compiler, ajmlc, which generates aspects that enforce preconditions, postconditions, and invariants. Although this compiler provides benefits of source-code modularity and small bytecode size and running time, there is still a need for optimization of bytecode size and running time. To do this optimization while preserving the semantics of the resulting code, we optimize using refactorings based on AspectJ programming laws. To this end we present optimization refactorings and an empirical analysis showing the resulting improvements.