We present typing rules for the Web query language Xcerpt. The rules provide a descriptive type system: the typing of a program is an ation of its semantics. The rules can also be ...
Abstract. In this paper, we address the problem of expressing objectoriented concepts in terms of Petri nets. This is interesting, first, as a possibility of representing concurre...
Several efficient compilation techniques have been recently proposed for the generation of sequential (C) code from Esterel programs. Consisting essentially in direct simulation ...
ASL+ is a formalism for speci cation and programming in-the-large, based on an arbitrary institution. It has rules for proving the satisfaction and re nement of speci cations, whic...
Abstract. Formal grammars are well established for specifying the syntax of programming languages. However, the formal specification of programming language semantics has proven mo...