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| From | Richard Rogers <rprogers@seanet.com> |
| Newsgroups | comp.compilers |
| Subject | LALR look-ahead sets from item right context grammar? |
| Date | Thu, 29 Jan 2026 18:25:19 -0500 |
| Organization | Compilers Central |
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| Keywords | LALR, question |
| Posted-Date | 29 Jan 2026 21:32:43 EST |
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In discussing LR-Regular parsing, Grune [1] gives an algorithm for computing
the CFG of LR(0) item right contexts. I wondered if LALR(1) look-ahead sets
are just the FIRST of the item right context grammar?
1. @book{Grune:1990:PTP:130365,
author = {Grune, Dick and Jacobs, Ceriel J. H.},
title = {Parsing Techniques: A Practical Guide},
year = {1990},
isbn = {0-13-651431-6},
publisher = {Ellis Horwood},
address = {Upper Saddle River, NJ, USA},
}
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LALR look-ahead sets from item right context grammar? Richard Rogers <rprogers@seanet.com> - 2026-01-29 18:25 -0500 LALR look-ahead sets from item right context grammar? Chris Clark <cclark@imachinesinc.com> - 2026-01-31 01:30 +0000
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