Conference Paper

Deterministic Techniques for Efficient Non-Deterministic Parsers

DOI: 10.1007/3-540-06841-4_65 Conference: Automata, Languages and Programming, 2nd Colloquium, University of Saarbrücken, July 29 - August 2, 1974, Proceedings
Source: DBLP


A general study of parallel non-deterministic parsing and translation à la Earley is developped formally, based on non-deterministic pushdown acceptor-transducers. Several results (complexity and efficiency) are established, some new and other previously proved only in special cases. As an application, we show that for every family of deterministic context-free pushdown parsers (e.g. precedence, LR(k), LL(k), ...) there is a family of general context-free parallel parsers that have the same efficiency in most practical cases (e.g. analysis of programming languages).

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Available from: Bernard Lang, Mar 17, 2014
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    • "The sbp package is an implementation of the Lang-Tomita Generalized LR Parsing Algorithm [2] [3], employing Johnstone & Scott's RNGLR algorithm [13] for handling -productions and circularities. "
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    Preview · Article · Jul 2006 · Cognitive Science
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    • "An obvious way to extend the standard LR parsing approach to incorporate non-determinism is to replicate the stack when a point of non-determinism is reached, and to explore all the possible traversals of the DFA. An efficient algorithm for exploring all traversals of a non-deterministic PDA which performs at most one stack pop and one stack push at each step, was given by Lang [11]. Tomita [15] gave an algorithm aimed explicitly at LR DFAs (which in their standard form can pop multiple stack symbols at each step). "
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