The EAG Project


The EAG project at the University of Nijmegen in the Netherlands is a framework for research in specification languages and compiler construction for nondeterministic languages. Extended Affix Grammars (EAG) are an attempt to implement a very general form of Affix Grammars, with very few restrictions. EAG can be used as a specification formalism, specifying in general relations rather than functions, or as a relational programming language similar in many respects to PROLOG.

A simple introduction to EAG can be found in: C.H.A. Koster (1991), Affix Grammars for Programming Languages. In: H. Alblas and B. Melichar (Eds.), Attribute Grammars, Applications and Systems. Proceedings WAGA '91. SLNCS 545, Springer Verlag 1991, pp 358-373. gzipped postscript

Related projects

The current version of the EAG system has been developed by Mark van de Brand and Marc Seutter at the University of Nijmegen. It is freely available for non-commercial use, on an as-is basis. Commercial users can request a license to use EAG from

Cornelis H.A. Koster
Department of Computing Science
University of Nijmegen
6525ED Nijmegen, The Netherlands
tel: +31.24.3653456
fax: +31.24.3553450
mail me at kees atsign cs.kun.nl

Obtaining the eag system