Développement formel par composants Assemblage et vérification à l'aide de B

In a software component-based development approach, components are considered as black boxes. A component-based application consists of assembled components which communicate by the means of their interfaces. A formal description of these interfaces is therefore required to check their compatibility. In general, interfaces are not directly compatible and an adapter is required to bridge the gap. We propose patterns to assemble components in a systematic manner and verify their interoperability; these patterns are defined using B concepts. The assembly is a refinement of the required interfaces, including the provided interfaces; the process correctness is validated by the usual proof obligations. MOTS-CLÉS : composant, adaptateur, assemblage, interface, vérification, construction sûre, raffinement.