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| comp.compilers | Compiler construction, theory, etc. (Mod | 2,753 messages |
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| Message 2,099 of 2,753 |
| Paul B Mann to All |
| Re: How detect cycle in grammar ? |
| 01 Dec 11 02:46:16 |
From: paul@paulbmann.com The LRSTAR parser generator reports two errors in this grammar: S -> A|B A -> A B -> t LRSTAR Basic 3.0.137 Copyright 2011 Compilerware. Input silly.grm silly.grm(6) : A -> A silly.grm(6) : ---^ silly.grm(6) : Useless production. silly.grm(6) : A silly.grm(6) : ---^ silly.grm(6) : Nonterminal symbol in cycle, cannot derive anything. 0 min 0.000 sec, 0.728 MB, 0 warnings, 2 errors. --- SoupGate-Win32 v1.05 * Origin: you cannot sedate... all the things you hate (1:229/2) |
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