enum-text: A text rendering and parsing toolkit for enumerated types

[ bsd3, library, text ] [ Propose Tags ]

A text rendering and parsing toolkit for enumerated types. Please see the README on GitHub at https://github.com/cdornan/enum-text#readme

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Versions [faq],
Change log ChangeLog.md
Dependencies array, base (>=4.8.2 && <10), bytestring, fmt, hashable, possibly, text, time, unordered-containers [details]
License BSD-3-Clause
Copyright 2019 Chris Dornan
Author Chris Dornan
Maintainer chris@chrisdornan.com
Category Text
Home page https://github.com/cdornan/enum-text#readme
Bug tracker https://github.com/cdornan/enum-text/issues
Source repo head: git clone https://github.com/cdornan/enum-text
Uploaded by ChrisDornan at Sat Mar 16 15:38:26 UTC 2019
Distributions NixOS:
Downloads 43 total (43 in the last 30 days)
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Status Hackage Matrix CI
Docs available [build log]
Last success reported on 2019-03-16 [all 1 reports]


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Readme for enum-text-

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A simple toolkit for rendering enumerated types into Text Builder (used by the fmt package) and parsing them back again into Text with the provided TextParsable type class.

To get the Buildable and TextParsable instances for an enumerated data type use the following pattern:

import Fmt
import Text.Enum.Text

data Foo = FOO_bar | FOO_bar_baz
  deriving (Bounded,Enum,Eq,Ord,Show)

instance EnumText     Foo
instance Buildable    Foo where build     = buildEnumText
instance TextParsable Foo where parseText = parseEnumText

This will use the default configuration for generating the text of each enumeration from the derived show text, namely:

  • removing the prefix upto and including the first underscore (_);
  • converting each subsequent underscore (_) into a dash (-).

See the Haddocks for details on how to override this default configuration for any given enumeration type.

Functions for rendering text, generating and parsing UTF-8 encoded ByteStrings (suitable for cassava) and Hashable functions are also provided EnumText.