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The problem of designing a domain-specific language (DSL) can be split into two sub-problems: a) defining the language constructs starting from an appropriate set of abstrac-tions in the domain, and b) choosing a syntax that resembles the standard notation, or is otherwise as intuitive as possible from a domain expert standpoint. We propose as a so...
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... Other dynamic languages that come with a MOP can be used to provide a flexible DSML semantics as presented in this paper. xPico [11] allows to extend the syntax and semantics even at runtime by reflectively manipulating the AST at welldefined adaptation points. The idea to use reflection and the targeted flexibility is similar to our approach. ...
Meta-object protocols are used to open up the implemen-tations of object-oriented general-purpose languages to sup-port semantic variability. They enable performing appli-cation-level semantic adaptations to the language even at runtime. However, such meta-object protocols are not avail-able for domain specific-modeling languages. Also, existing approaches to implementing domain-specific modeling lan-guages do not support semantic adaptations, where the ap-plication basically redefines specific parts of the language semantics. We propose a new approach for the implementa-tion of domain-specific modeling languages that uses meta-objects and meta-object protocols to open up the implemen-tation of domain-specific abstractions. This approach en-ables runtime semantic variability of the form of application-specific late semantic adaptations of domain-specific model-ing languages that depend on the runtime application con-text.
... More important to the thesis, however, is the second methodology, which is concerned with the creation and support of extensible languages in general. We are going to present four related projects: Silver [34], the Syntax Definition Formalism (SDF) [33], xPico [11], and Meta Programming System (MPS) [16]. Silver is an example of a platform that uses attribute grammars [21] as a means to specify languages and their extensions. ...
... Another similar project is [11]. It presents a tool for the management of DSLs in the form of small core languages that can be easily extended. ...
Separation of concerns is an interesting design concept which is more or less addressed in various paradigms objects, aspects, components and, services in order to achieve software reusability and adaptability. Composition of these concerns is a key issue in software development. The goal of the workshop is to bring the researchers to discuss on software composition according the paradigm which is used, the degree of dynamicity, the stage in the software life cycle, the application domain and the software variability. More generally, the unique contribution of this workshop is to view composition as it is impacted by several points of variation associated for example to the context of reuse, the time of composition or the business domain. Composition can be applied in particular on Objects, Aspects, SOA, Component-Based architectures and may address various phases of the development process such as: GUI, design, programming, deployment, and maintenance. We have been particularly interested in having contributions dealing with any combination of a topic taken in “Composition and paradigm ” and “Composition and product line” in order to get a view of the composition process colored with variability issues.
