Lr Parser

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Simple LR parser - A Simple LR parser or SLR parser is an LR parser for which the parsing tables are generated as for an LR(0) parser except that it only performs a reduction with a grammar rule A → w if the next symbol on the input ...

Canonical LR parser - A canonical LR parser or LR(1) parser is an LR parser whose parsing tables are constructed in a similar way as with LR(0) parsers except that the items in the item sets also contain a follow, i.e.

LR parser - In computer science, an LR parser is a type of bottom-up parser for context-free grammars that is very commonly used by computer programming language compilers (and other associated tools). LR parsers read their input from Left to right and produce a Rightmost derivation (hence LR, ...

LALR parser - In computer science, Look-Ahead LR parsers or LALR parsers are a specialized form of LR parsers that can deal with more context-free grammars than Simple LR parsers but less than LR(1) parsers can. It is a very popular type of parser because it gives a good trade-off between the number of grammars it ...

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Kelbt: Backtracking LR Parsing - Kelbt generates backtracking LALR(1) parsers. Whereas standard LALR(1) parser generators emit an error upon encountering a conflict in the parse tables, Kelbt forges onward, generating parsers which handle conflicts by backtracking at runtime. As Kelbt is able to generate a parser for any context-free grammar, it therefore implements a generalized parsing method.

Essence - A generator for LR(k) and SLR(k) parsers in Scheme. The generated parsers perform error recovery, and are highly efficient. They result from the general parser by an automatic program transformation called partial evaluation. This guarantees consistency and ensures correctness. However, no specific knowledge of partial evaluation is ...

Interactive Software Development and Renovation Software - ASF+SDF compiler runtime library, Meta-Environment, ATerm Library, SDF2 Parser generator, Completa, SGLR (Scannerless Generalized LR parser), ToolBus.

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