https://github.com/turbomack/aeson-combinators

Aeson combinators for dead simple JSON decoding
https://github.com/turbomack/aeson-combinators

haskell json parsing web

Last synced: 2 months ago
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Aeson combinators for dead simple JSON decoding

• Host: GitHub
• URL: https://github.com/turbomack/aeson-combinators
• Owner: turboMaCk
• License: bsd-3-clause
• Created: 2020-02-11T22:43:01.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2023-12-29T08:52:07.000Z (over 1 year ago)
• Last Synced: 2025-04-12T23:20:57.796Z (2 months ago)
• Topics: haskell, json, parsing, web
• Language: Haskell
• Homepage: https://hackage.haskell.org/package/aeson-combinators
• Size: 118 KB
• Stars: 13
• Watchers: 3
• Forks: 3
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

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README

        
# Aeson Combinators

[![Build Status](https://img.shields.io/endpoint.svg?url=https%3A%2F%2Factions-badge.atrox.dev%2FturboMaCk%2Faeson-combinators%2Fbadge%3Fref%3Dmaster&style=flat)](https://actions-badge.atrox.dev/turboMaCk/aeson-combinators/goto?ref=master)

[![built with nix](https://builtwithnix.org/badge.svg)](https://builtwithnix.org)

[**Low overhead**](#performance) value space `Decoder`

on top of Aeson's Parser for combinator style decoding.

This library is compatible with GHC as well as recent versions of **GHCJS**.

## Performance

`Decoder a` type is a function `Value -> Parser a` the same as `parseJSON`

member function of `FromJSON` class. This means there should be near zero overhead.

Aeson types and functions are reused where possible. Similarly `Encoder a` type

follow `toJSON` from `ToJSON` type class.

Simple benchmark shows that implementation using aeson-combinators performs better

than equivalent derived instance and on par (actually even slightly better though with difference in noise range)

with manually implemented instance.

## License

(c) 2020 Marek Fajkus

BSD-3-Clause