Automated Verification of Design Patterns with LePUS3

Specification and [visual] modelling languages are expected to combine strong abstraction mechanisms with rigour, scalability, and parsimony. LePUS3 is a visual, object-oriented design description language axiomatized in a decidable subset of the first-order predicate logic. We demonstrate how LePUS3 is used to formally specify a structural design pattern and prove (‗verify‘) whether any JavaTM 1.4 program satisfies that specification. We also show how LePUS3 specifications (charts) are composed and how they are verified fully automatically in the Two-Tier Programming Toolkit

CSM-474: LePUS3 and Class-Z Reference Manual

This document formally defines the elements in the syntax and the semantics of LePUS3 and the Class-Z specification languages. It was designed to satisfy the rigid requirements of mathematical logic, and it is therefore unsuitable for learning LePUS3 and Class-Z. More suitable for this purpose will be the book "Object-Oriented Modelling" [Eden under preparation]. A legend offering a key to the language's symbols is also available

CSM-472: The 'Gang of Four' Companion

This document demonstrates how the informal specifications of the design patterns the 'Gang of Four' seminal catalogue [Gamma et al 1995] can be specified formally using the LePUS3 and Class-Z object-oriented Architecture Description Languages