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Eliminating Unnecessary Items from the One-Pass Evaluation of Attribute Grammars

Yoshimichi WATANABE, Takehiro TOKUDA

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Summary :

We present two efficient attribute evaluator construction methods for a wide subclass of L-attributed grammars by enumeration of attributed items during one-pass bottom-up parsing. We have already proposed a construction method of a parser/evaluator for the subclass of L-attributed grammar. However the evaluator produced by our previous method uses a great number of attributed items to evaluate all attributes of a given input string. In this paper we propose two generalized methods to reduce the number of attributed itmes used in attribute evaluation. Our methods allow us to evaluate all attributes taking advantage of the use of available lookahead information.

Publication
IEICE TRANSACTIONS on Information Vol.E79-D No.4 pp.312-320
Publication Date
1996/04/25
Publicized
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DOI
Type of Manuscript
PAPER
Category
Software Theory

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