Peter Würtz Vinther Tran-Jørgensen

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We present and analyse an architectural migration in the Overture tool, a tool for which the primary internal data structure is an Abstract Syntax Tree (AST). The migration was from a high-cohesion AST with functionality encapsulated in its nodes to an extensible, low-cohesion AST with functionality implemented in visitors. This was motivated by the need(More)
This paper introduces a generic solution for gradually moving from a model of an embedded system to include embedded hardware and software components into the simulation of the model. Our technique enables combined execution (co-execution) of system components models expressed in the VDM-RT formalism with actual hardware/software realizations through the(More)
Formal Methods tools will never have as many users as tools for popular programming languages and so the effort spent on constructing Integrated Development Environments (IDEs) will be orders of magnitudes lower than that of programming languages such as Java. This means newcomers to formal methods do not get the same user experience as with their favourite(More)
Modelling and simulation assist in decision support or planning activities by allowing efficient exploration of multiple scenarios in a situation where testing in a real setting is impractical. This exploration is often done by varying numerical parameters in the model such as physical dimensions or speed in order to find the optimal configuration. However,(More)
When a system specified using the Vienna Development Method (VDM) is realised using code-generation, no guarantees are currently made about the correctness of the generated code. In this paper, we improve code-generation of VDM models by taking contract-based elements such as invariants and pre- and postconditions into account during the code-generation(More)
We present a set of principles that promote reuse in the development of tool support for formal modelling languages, in the context of language extensions. The principles are supported and realised by the <i>AstCreator</i> tool and its basic usage is demonstrated. Use of <i>AstCreator</i> can help reduce the efforts needed to extend a language. This is(More)
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