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Modular Composition of Language Features through Extensions of Semantic Language Models

3rd Irish Workshop on Formal Methods (IWFM)

Formal Methods

1st - 2nd July 1999

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      Today, programming or specification languages are often extended in order to customize them for a particular application domain or to refine the language definition. The extension of a semantic model is often at the centre of such an extension. We will present a framework for linking basic and extended models. The example which we are going to use is the RSL concurrency model. The RAISE specification language RSL is a formal wide-spectrum specification language which integrates different features, such as state-basedness, concurrency and modules. The concurrency features of RSL are based on a refinement of a classical denotational model for process algebras. A modification was necessary to integrate state-based features into the basic model in order to meet requirements in the design of RSL. We will investigate this integration, formalising the relationship between the basic model and the adapted version in a rigorous way. The result will be a modular composition of the basic process model and new language features, such as state-based features or input/output.

      We will show general mechanisms for integration of new features into a language by extending language models in a structured, modular way. In particular, we will concentrate on the preservation of properties of the basic model in these extensions.

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      The essence of functional programming

       Philip Wadler (1992)

        Author and article information

        School of Computer Applications, Dublin City University

        Dublin, Ireland
        July 1999
        July 1999
        : 1-16
        © Claus Pahl. Published by BCS Learning and Development Ltd. 3rd Irish Workshop on Formal Methods

        This work is licensed under a Creative Commons Attribution 4.0 Unported License. To view a copy of this license, visit

        3rd Irish Workshop on Formal Methods
        Galway, Ireland
        1st - 2nd July 1999
        Electronic Workshops in Computing (eWiC)
        Formal Methods
        Product Information: 1477-9358 BCS Learning & Development
        Self URI (journal page):
        Electronic Workshops in Computing


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