prettyprinter-combinators: Some useful combinators for the prettyprinter package

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Warnings:

These packages miss upper bounds: - bimap - bytestring - containers - dlist - enummapset - pretty-show - prettyprinter - syb - template-haskell - text - unordered-containers - vector Please add them, using `cabal gen-bounds` for suggestions. For more information see: https://pvp.haskell.org/

Various utilities that make writing Pretty instances easier.

Notable utilites include automatic deriving of Pretty instance via Generic, Data, or Show instance.

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Properties

Versions	0.1, 0.1.0.1, 0.1.1, 0.1.1.1, 0.1.2, 0.1.3, 0.1.3
Change log	Changelog.md
Dependencies	base (>=4.16 && <5), bimap, bytestring, containers, dlist, enummapset, pretty-show (>=1.6), prettyprinter (>=1.7), syb, template-haskell (>=2.18), text, unordered-containers, vector [details]
License	Apache-2.0
Author	Sergey Vinokurov
Maintainer	Sergey Vinokurov <serg.foo@gmail.com>
Category	User Interfaces, Text
Home page	https://github.com/sergv/prettyprinter-combinators
Source repo	head: git clone https://github.com/sergv/prettyprinter-combinators.git
Uploaded	by SergeyVinokurov at 2024-05-12T15:21:21Z

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Prettyprinter

Flags

Manual Flags

Name	Description	Default
enummapset	Depend on enummapset package to provide instances and functions for it	Enabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

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prettyprinter-combinators-0.1.3.tar.gz [browse] (Cabal source package)
Package description (as included in the package)

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Readme for prettyprinter-combinators-0.1.3

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This is a set of utilities for the Haskell prettyrinter package. Most notable is automatic deriving of Pretty instance from the Generic instance, e.g.

{-# LANGUAGE DeriveGeneric #-}

import Prettyprinter.Generics

data Foo a b = Bar Int | Baz a b
  deriving (Generic)

instance (Pretty a, Pretty b) => Pretty (Foo a b) where
  pretty = ppGeneric

printed :: Doc ann
printed = pretty $ Baz (Bar 10 :: Foo () ()) [1..22]

which would put following into printed: