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51 lines
2.3 KiB
Markdown
51 lines
2.3 KiB
Markdown
# Megaparsec
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[](http://opensource.org/licenses/BSD-3-Clause)
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[](https://travis-ci.org/mrkkrp/megaparsec)
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[](https://coveralls.io/github/mrkkrp/megaparsec?branch=master)
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This is industrial-strength monadic parser combinator library. Megaparsec is
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a fork of original Parsec library written by Daan Leijen. This library is
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different from Parsec in the following ways:
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* Original Parsec consists of quite ancient code-base and has certain
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stylistic problems that's anyone who tries to compile Parsec with `-Wall`
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option can notice. This has been refreshed in Megaparsec. The changes are
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mainly cosmetic but not limited to them.
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* Some quirks and old «buggy features» (as well as plain bugs) are fixed.
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* Original Parsec uses rather weak collection of tests: a test per bug,
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obviously to prevent regression. Our aim is to write complete test-suite
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with QuickCheck to cover 100% of Megaparsec code. You can understand need
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for this test-suite if you look at `CHANGELOG.md` file that includes
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Parsec-era changes. The word «regression» mentioned quite frequently.
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* Megaparsec looks into future, it does not contain code that serves for
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compatibility purposes, it also requires more recent version of `base`.
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* Finally, we have fixed numerous typos and other minor flaws.
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The reason for creating separate version of the project was inactivity of
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its current maintainer who reduced active contributions to something like
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one commit in three months and indefinitely delayed merging of our
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contributions without any explanation. We wanted to improve Parsec and we
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had some ideas how this can be achieved, so we decided to create our own
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version of Parsec.
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## Contributing
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Issues (bugs, feature requests or otherwise feedback) may be reported in
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[the Github issue tracker for this project](https://github.com/mrkkrp/megaparsec/issues).
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Pull-requests are also welcome (and yes they will get attention and will be
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merged quickly if they are good).
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## License
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Copyright © 2015 Megaparsec contributors<br>
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Copyright © 2007 Paolo Martini<br>
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Copyright © 1999–2000 Daan Leijen
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Distributed under BSD3 license.
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