5f34705835
- Fix CONFIGURE_ARGS, PORTDOCS, PORTEXAMPLES - Update pkg-descr - Set MASTER_SITES to HackageDB Approved by: gabor
18 lines
832 B
Text
18 lines
832 B
Text
Happy is a parser generator system for Haskell, similar to the tool
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`yacc' for C. Like `yacc', it takes a file containing an annotated BNF
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specification of a grammar and produces a Haskell module containing a
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parser for the grammar.
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Happy is flexible: you can have several Happy parsers in the same
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program, and several entry points to a single grammar. Happy can work
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in conjunction with a lexical analyser supplied by the user (either
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hand-written or generated by another program), or it can parse a stream
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of characters directly (but this isn't practical in most cases).
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As of version 1.5, Happy is capable of parsing full Haskell. We have a
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Haskell parser that uses Happy, which will shortly be part of the
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library collection distributed with GHC.
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WWW: http://www.haskell.org/happy/
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-- Simon Marlow <simonmar@microsoft.com>
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