Peter van Eijk

Tool Demonstration: The Lotosphere Integrated Tool Environment Lite

This document describes some of the LOTOS tools that were produced in the Lotosphere project, and that are demoed during the FORTE 91 conference.

An Exercise in Protocol Synthesis

Abstract It has been claimed earlier that a protocol should be designed on the basis of a service definition. In this paper we work through an example in which this is done entirely in LOTOS and entirely with correctness preserving transformations. It is thus an example of applying formal methods in a design process, and not just in a design representation. We believe that the techniques introduced in this paper constitutes a novel contribution to the craft of protocol design.

Attribute grammar applications in prototyping LOTOS tools

What is the practical applicability of attribute grammars? As we show in this paper, attribute grammars are at least good enough for the prototyping of fully functional interactive tools. Going from a definition of a language and the functionality of its tools to an attribute grammar is a discipline in need of a systematic approach, for which we give some initial material. As is inevitable when a system is extensively used (in our case the Cornell Synthesizer Generator), this paper also proposes extensions to the attribute grammar formalism and its supporting systems.