A predicate-based approach to defining visual language syntax

Authors:
Jörn W. Janneck;Robert Esser
Affiliations:
-;-
Venue:
HCC '01 Proceedings of the IEEE 2001 Symposia on Human Centric Computing Languages and Environments (HCC'01)
Year:
2001

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Abstract

This paper presents an approach to the specificationof visual language syntax. Based on attributed graphsas the notion of abstract syntax, syntactical correctnessis specified by a set of predicates over that structure.The proposed technique facilitates the natural embedding of other visual and textual notations, the definitionof complex syntactic and static-semantic properties, aswell as precise error diagnosis and localization. Anediting environment supporting this technique is brieflydiscussed.