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| seancribbs |
 Posted: Tue Jun 23, 2009 12:16 am |
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Joined: 03 May 2009
Posts: 17
Location: Chapel Hill, NC
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neotoma generates packrat parsers from PEG (Parsing Expression Grammar) files. While Erlang already has leex and yecc for building parsers, neotoma provides an alternative that makes certain types of languages simpler to express and understand. For more detailed information on PEGs and packrat parsers, I encourage you to visit Bryan Ford's resource page.
More detail about the library can be found in the README, and in my series of blog posts.
neotoma is licensed under the MIT License. |
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| seancribbs |
| Posted: Mon Jun 29, 2009 1:18 pm |
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Joined: 03 May 2009
Posts: 17
Location: Chapel Hill, NC
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Version 1.1 includes these enhancements:
* The build process now uses make and erl -make instead of rake.
* neotoma now has an .app file.
* neotoma is now self-hosting, that is, the metagrammar-parser can generate itself. Use `make bootstrap` to try it out.
* The parser generator will now print some useful warnings and errors if you have unused reductions or dangling nonterminals in your grammar. If you have the latter, a parser will NOT be generated and the process will exit.
NOTE: You must have the library in $ERLANG_LIB to build properly. |
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