Nautilus: A Concurrent Anticipatory Programming Language

摘要

Nautilus is a concurrent anticipatory programming language based on the object-oriented language GNOME which is a simplified and revised version of OBLOG. A semantics for Nautilus is given by Nonsequencial Automata, that is a categorial semantic domain based on labeled transition system with full concurrency, where a class of morphisms stands for anticipation. The semantics of an object in Nautilus is given by an anticipation morphism, which is viewed as a special automaton morphism where target automata, called base, is determined by the computations of a freely generated automata able to simulate any object specified over the involved attributes, and the source automata is a relabelled restriction of the base. In order to introduce the anticipation of Nautilus, some examples are presented depicting the features of the language.