The bitset-word8 package

[ Tags: data, library, mit ] [ Propose Tags ]

This package is intended to provide O(1) membership test on any subset of ASCII and Latin-1 character set in order to write efficient HTTP related parser.


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Versions 0.1.0.0, 0.1.0.1, 0.1.1.0
Change log CHANGELOG.md
Dependencies base (>=4.7 && <5), containers, template-haskell, th-lift-instances [details]
License MIT
Copyright Copyright: (c) 2017 Naoto Shimazaki
Author Naoto Shimazaki
Maintainer Naoto.Shimazaki@gmail.com
Category Data
Home page https://github.com/nshimaza/bitset-word8#readme
Source repository head: git clone https://github.com/nshimaza/bitset-word8
Uploaded Thu Oct 19 08:08:34 UTC 2017 by nshimaza
Distributions Stackage:0.1.1.0
Downloads 103 total (103 in the last 30 days)
Rating 0.0 (0 ratings) [clear rating]
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Status Docs available [build log]
Last success reported on 2017-10-19 [all 1 reports]
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Readme for bitset-word8-0.1.1.0

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bitset-word8

License: MIT Build Status Hackage Stackage Nightly Stackage LTS

Space efficient set of Word8 and some pre-canned sets useful for parsing HTTP related ByteString. This package is intended to provide O(1) membership test on any subset of ASCII and Latin-1 character set in order to write efficient HTTP related parser.

Creating your own set

You can create your own set by fromList.

myCharSet :: BitSetWord8
myCharSet = fromList [ 'Y', 'y', 'N', 'n' ]

You can create pre-evaluated set using Template Haskell.

{-# LANGUAGE TemplateHaskell #-}
import Language.Haskell.TH.Syntax (Lift, lift)

myPreEvaluatedCharSet :: BitSetWord8
myPreEvaluatedCharSet = $(lift myCharSet)

Example Usage

import Data.Attoparsec.ByteString

-- | Parse RFC7230 token.
token :: Parser ByteString
token = takeWhile1 (member rfc7230TChar)