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| From | Andy <borucki.andrzej@gmail.com> |
| Newsgroups | comp.compilers |
| Subject | FIRST_k, FOLLOW_k, k>1 |
| Date | Thu, 6 Feb 2020 10:43:24 -0800 (PST) |
| Organization | Compilers Central |
| Lines | 15 |
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| Approved | comp.compilers@iecc.com |
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| Keywords | parse, question |
| Posted-Date | 06 Feb 2020 14:17:10 EST |
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If LL(l) and LR(k) need sets FIRST_k, FOLLOW_k, k>1, for example LR(3) need this sets of degree 3? How make it? How is the best structure for these sets? I think about pyramid: - one bit - is epsilon - bit table size n - bit table size n^2 ... - bit table size n^k because sets degree of k also have shorter strings. This exponentially grows, in real grammars, number of tokens can be quite big, ~80, It need then 0(80^k) bits. This sets will sparse and is better organization of substrings in sets? For example, not bit set but set of trees or DFA's ?
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FIRST_k, FOLLOW_k, k>1 Andy <borucki.andrzej@gmail.com> - 2020-02-06 10:43 -0800
Re: FIRST_k, FOLLOW_k, k>1 Andy <borucki.andrzej@gmail.com> - 2020-02-06 14:16 -0800
Re: FIRST_k, FOLLOW_k, k>1 Hans-Peter Diettrich <DrDiettrich1@netscape.net> - 2020-02-08 11:00 +0100
Re: FIRST_k, FOLLOW_k, k>1 Andy <borucki.andrzej@gmail.com> - 2020-02-08 11:54 -0800
Re: FIRST_k, FOLLOW_k, k>1 Hans-Peter Diettrich <DrDiettrich1@netscape.net> - 2020-02-09 02:46 +0100
FIRST_k, FOLLOW_k, k>1 Christopher F Clark <christopher.f.clark@compiler-resources.com> - 2020-02-07 16:12 +0200
Re: FIRST_k, FOLLOW_k, k>1 honey crisis <gaztoast@gmail.com> - 2020-02-08 18:18 -0800
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