I love the concise syntax and useful examples. Thank you! On Wed, Sep 28, 2011 at 12:53 PM, Hideyuki Tanaka wrote:

Hello, all.

I have released 'Peggy' a new parser generator . It is based on Parsing Expression Grammer (PEG) [1], and generates efficient packrat parsers.

# Where to get it

* Hackage page (http://hackage.haskell.org/package/peggy) * github repository (https://github.com/tanakh/peggy). * Some documents are at (http://tanakh.github.com/Peggy/).

# Advantage

* Simple and Powerful syntax * No shift/reduce conflict * Unlimited look-ahead * You don't need to prepare separated Scanner * Linear time complexity * Based on modern Haskell ecosystem (bytestring, text, ListLike, Monads, etc...) * Support to use and generate Quasi Quoters

# Examples

Here are few example of parsers:

* http://tanakh.github.com/Peggy/example.html * https://github.com/tanakh/Peggy/blob/master/example/Json.hs

There is a self defined parser of peggy syntax, used for bootstrapping:

* https://github.com/tanakh/Peggy/blob/master/bootstrap/peggy.peggy

Please try it and give me feedbacks! Thanks,

[1]: http://en.wikipedia.org/wiki/Parsing_expression_grammar

-- Hideyuki Tanaka

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