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IEEE 2001 Symposium on Human Centric Computing Languages and Environments (HCC'01)
Stresa, Italy
September 05-September 07
ISBN: 0-7695-0474-4
GENNARO COSTAGLIOLA, Universit? di Salerno
VINCENZO DEUFEMIA, Universit? di Salerno
FILOMENA FERRUCCI, Universit? di Salerno
CARMINE GRAVINO, Universit? di Salerno
The widespread use of visual languages has motivated the need for grammar-based tools to support designers in the definition and implementation of graphical environments. The effective use of such systems requires efficient parsing techniques. The VLCC system makes use of a suitable LR-like methodology that allows us to efficiently parse visual sentences [1]. However there exist particular grammars which are non pLR parsable because they can produce run-time conflicts during the parsing of some sentences. In this paper we will introduce an algorithm that statically verifies the pLR parsability of a positional grammar by detecting whether or not it would produce run-time conflicts.
Citation:
GENNARO COSTAGLIOLA, VINCENZO DEUFEMIA, FILOMENA FERRUCCI, CARMINE GRAVINO, "On the pLR Parsability of Visual Languages," hcc, pp.48, IEEE 2001 Symposium on Human Centric Computing Languages and Environments (HCC'01), 2001
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