On the chemistry of typestate-oriented actors

May 22, 2017

Silvia Crafa (Université de Padoue)

Typestate-oriented programming is an extension of the OO paradigm in which objects are modeled not just in terms of interfaces but also in terms of their usage protocols, describing legal sequences of method calls, possibly depending on the object’s internal state. We argue that the Actor Model allows typestate-OOP in an inherently distributed setting, whereby objects/actors can be accessed concurrently by several processes, and local entities cooperate to carry out a communication protocol. We illustrate the approach by means of a number of examples written in Scala Akka.