Using smalltalk as a reflective executable meta-language

  • Authors:
  • Stéphane Ducasse;Tudor Gîrba

  • Affiliations:
  • Software Composition Group, University of Bern;Software Composition Group, University of Bern

  • Venue:
  • MoDELS'06 Proceedings of the 9th international conference on Model Driven Engineering Languages and Systems
  • Year:
  • 2006

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Abstract

Object-oriented meta-languages such as MOF or EMOF are often used to specify domain specific languages. However, these meta-languages lack the ability to describe behavior or operational semantics. Several approaches have used a subset of Java mixed with OCL as executable meta-languages. In this paper, we report our experience of using Smalltalk as an executable meta-language. We validated this approach in incrementally building over the last decade, Moose, a meta-described reengineering environment. The reflective capabilities of Smalltalk support a uniform way of letting the developer focus on his tasks while at the same time allowing him to meta-describe his domain model. The advantage of our approach is that the developer uses the same tools and environment he uses for his regular tasks.