Guest Editors' Foreword

摘要

The 3rd Workshop on Formal Languages and Analysis of Contract-Oriented Software1 (FLACOS'09) was held in Toledo, Spain 24-25 September 2009. The main theme of the workshop was the following: The ability to negotiate contracts for a wide range of aspects and to provide services conforming to them is a most pressing need in service-oriented architectures. High-level models of contracts are making their way into service-oriented architectures, but application developers are still left to their own devices when it comes to writing code that will comply with a contract concluded just before service provisioning. At the programming language level, contracts appear as separate concerns that cut across application logic, while analysis requires that contracts are abstracted from applications to become amenable to formal reasoning using formal language techniques. The aim of this workshop is to bring together researchers and practitioners working on language-based solutions to the above issues through formalization of contracts, design of appropriate abstraction mechanisms, and formal analysis of contract languages and software.