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A top-down no backtrack parsing of general context-free languages

Authors: Jaroslav Král;

A top-down no backtrack parsing of general context-free languages

Abstract

A new parsing algorithm is presented. The algorithm works in a top-down manner and it is easily implementable. The algorithm works for all non left-recursive e-free context-free grammars. For LR(1) left-recursion-free grammars works like an LR(1) push-down acceptor. The time bounds are O(n3) for all context-free grammars, O(n2) for a superset of unambiguous grammars and O(n) for a superset of LR grammars (see Graham, Harrison [1]). It is hoped that the ideas used in the algorithm can help to find an accepting algorithm working in time O(n2). The method has promising properties for error recovery in compilers and produces all the possible parses in a string encoding. In any case, the ideas presented in the paper can contribute to the understanding of the parsing problem of general context-free languages.

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
1
Average
Top 10%
Average
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