happy

parser generator for Haskell

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  1. Package version
    happy-1.20.1.1
  2. Maintainer
    The OpenBSD ports mailing-list

Happy - The LALR(1) Parser Generator for Haskell

Happy is a parser generator system for Haskell, similar to the
tool `yacc' for C. Like `yacc', it takes a file containing an
annotated BNF specification of a grammar and produces a Haskell
module containing a parser for the grammar.

Happy is flexible: you can have several Happy parsers in the same
program, and several entry points to a single grammar. Happy can
work in conjunction with a lexical analyser supplied by the user
(either hand-written or generated by another program), or it can
parse a stream of characters directly.

  • textproc/docbook-xsl
  • STEM->=3.4.0.0:devel/cabal-install
  • STEM->=8.6.4:lang/ghc
  • devel/metaauto
  • devel/autoconf/2.69
  • devel/gmake