The BNFC-meta package


This package provides a very simple way of defining a compiler front-end for a language by embedding a BNF grammar directly into a Haskell source file. Specifically, given a quasi-quoted LBNF grammar (as used by the BNF Converter) it generates (using Template Haskell) a LALR parser and pretty pretty printer for the language. The parser is then used to automatically define a quasi-quoter for the defined language so it can also be seamlessly embedded in Haskell source code. With a simple addition to the gramwmar, the user can define a universal syntax for anti-quoting. This means that any grammar non-terminal can be replaced by a quoted Haskell expression of the appropriate type. A few example languages are included in the source tarball.

The LBNF grammar formalism is described thoroughly in the BNF Converter documentation:

This library and the additions it makes to LBNF is described in a 2011 Haskell Symposium paper titled "Embedded Parser Generators":


Versions0.1,,,, 0.2,,, 0.2.1, 0.2.2, 0.3,,,,,, 0.4,,,,
Dependenciesalex-meta (>= && <0.4), array (>=0.4 && <0.6), base (>=4.2 && <5), happy-meta (>= && <0.3), haskell-src-meta (>=0.5 && <1.0), syb (>=0.2 && <1.0), template-haskell (>=2.4 && <2.11) [details]
AuthorJonas Duregård
MaintainerJonas Duregård (
UploadedTue Jun 9 09:52:41 UTC 2015 by JonasDuregard




Maintainers' corner

For package maintainers and hackage trustees