Modular Reasoning about Aspect-Oriented Programs: A Rely-Guarantee Approach
by Raffi Khatchadourian, PhD Candidate at Ohio State University on Dec 20, 2010
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A number of authors have raised serious questions about the problems aspect-oriented programming (AOP) poses for modular reasoning. In this paper, we develop a formalism for such reasoning. The ...
A number of authors have raised serious questions about the problems aspect-oriented programming (AOP) poses for modular reasoning. In this paper, we develop a formalism for such reasoning. The rely-guarantee approach has proven very useful in reasoning about concurrent and distributed programs. We show that some of the main problems encountered in reasoning about aspect-oriented programs are similar to those encountered in reasoning about concurrent programs; and that the rely-guarantee approach, appropriately modified, helps address these problems. At the same time, there are some key differences as well. One important difference is that while the various processes of a concurrent program are typically designed simultaneously, aspects may be added as an afterthought to a program to enrich its behavior in appropriate ways. The use of traces in our formalism enables us to reason about such enriched behaviors. We illustrate our formalism by applying it to a standard example.
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