Using B to Verify the Weaving of Aspects

Aspect J is an aspect-oriented extension of the Java language that enables a modular implementation of crosscutting concerns. Despite this, aspects lack support for formal specification and verification. This paper expresses the base class and some related aspects of Aspect J model in B notation. It aims to benefit from proof obligations generated by B tools to ensure the correctness of Aspect J component composition. Static crosscuts of aspects are guaranteed by proof obligations of relation clauses between B abstract machines and dynamic crosscuts are proved by proof obligations of B refinement machines. This approach is illustrated by verifying a simple example.