Reactive Integration for Traditional Programming Languages

Reactive integration based on event broadcast is an increasingly important technique for developing systems. However, the use of this technique has largely been con ned to tool integration systems { in which tools exist as independent processes { and special-purpose languages { in which specialized forms of event broadcast are designed into the language from the start. This paper broadens the class of systems that can bene t from this approach by showing how to augment general-purpose programming languages with facilities for implicit invocation. We illustrate the approach in the context of the Ada language, and highlight the important design considerations that arise in extending such languages with facilities for reactive integration.