An object-oriented extension to PEARL90

This paper presents an object-oriented extension to the real-time programming language PEARL. The new language preserves PEARL´s expressiveness for timeliness and industrial processes and, at same time, improves the language´s readability and manageability (through the better encapsulation paradigm derived from the object concept). Moreover, the resulting object model allows the definition of inter and intra object parallelism in a transparent and simple way. Besides that, some extensions are also proposed to enhance testability and safety-related aspects of the language, such as the enforcement of deterministic temporal behaviour