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| From | rockbrentwood@gmail.com |
| Newsgroups | comp.compilers |
| Subject | Yacc with multiple entry points. |
| Date | Mon, 9 Dec 2019 16:13:06 -0800 (PST) |
| Organization | Compilers Central |
| Lines | 8 |
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| Keywords | yacc, parse, comment |
| Posted-Date | 10 Dec 2019 13:23:10 EST |
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There is a lot of saving and code-reuse possible if multiple entry points are allowed in a parser generator. This can be done by a simple extension of the LR process, but does complicate the issue of end-markers a little. You'll see brief mention of it, by the way, here on page 199 of the Lex and Yacc reference. https://books.google.com/books?id=vsHcnR4kXIAC&pg=PA199&lpg=PA199 authored by (... searching author page ...) Oh! The moderator, John! [I put the same trick on pp 163-164 of flex&bison. Fiddle the lexer so it sends the parser a fake token when it starts and use initial rules with the fake token to select the real entry point. That works in plain yacc or bison. -John]
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Yacc with multiple entry points. rockbrentwood@gmail.com - 2019-12-09 16:13 -0800
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