package yojson

  1. Overview
  2. Docs
Yojson is an optimized parsing and printing library for the JSON format

Install 

dune-project
 Dependency

github.com Readme Changelog BSD-3-Clause License Edit opam file Versions (15)

Authors

  1. M
    Martin Jambon

Maintainers

  1. N
    nathan@cryptosense.com
  2. M
    marek@xivilization.net

Sources

yojson-2.0.2.tbz
sha256=876bb6f38af73a84a29438a3da35e4857c60a14556a606525b148c6fdbe5461b
sha512=9e150689a814a64e53e361e336fe826df5a3e3851d1367fda4a001392175c29348de55db0b7d7ba18539dec2cf78198efcb7f41b77a9861763f5aa97c05509ad

Description

Yojson is an optimized parsing and printing library for the JSON format.

ydump is a pretty-printing command-line program provided with the yojson package.

Published: 09 Aug 2022

README

Yojson: JSON library for OCaml

Build Status

This library parses JSON data into a nested OCaml tree data structure.

Library documentation

Currently at https://ocaml-community.github.io/yojson/

Examples

A simple example on how to parse JSON from a string literal.

let json_string = {|
  {"number" : 42,
   "string" : "yes",
   "list": ["for", "sure", 42]}|}
(* val json_string : string *)

let json = Yojson.Safe.from_string json_string
(* val json : Yojson.Safe.t *)

Format.printf "Parsed to %a" Yojson.Safe.pp json

Yojson is a pretty common choice for parsing JSON in OCaml, as such it is the base for a number of tools and libraries that are built on top of it.

  • ppx_deriving_yojson to automatically generate code that converts between Yojson.Safe.t and custom OCaml types
  • ppx_yojson_conv, an alternative to ppx_deriving_yojson from Jane Street with different design decisions
  • atd, generates mapping code from .atd specification files and can be used in multiple languages
  • jsonm is an alternate JSON parser that parses JSON into a stream of items, so the complete data structure does not have to be in memory.

Help wanted

Yojson is developed and maintained by volunteers — users like you. Various issues are in need of attention. If you'd like to contribute, please leave a comment on the issue you're interested in, or create a new issue. Experienced contributors will guide you as needed.

There are many simple ways of making a positive impact. For example, you can...

  • Use the software in your project.
  • Give a demo to your colleagues.
  • Share the passion on your blog.
  • Tweet about what you're doing with Yojson.
  • Report difficulties by creating new issues. We'll triage them.
  • Ask questions on StackOverflow.
  • Answer questions on StackOverflow.
  • Discuss usage on the OCaml forums.
  • Pick a task that's easy for you.

Check out in particular good first time issues and other issues with which we could use some help.

License

Yojson is licensed under the 3-clause BSD license, see LICENSE.md for details.

Dependencies (4)

  1. seq >= "0.2.2"
  2. cppo build
  3. dune >= "2.0"
  4. ocaml >= "4.02.3"

Dev Dependencies (2)

  1. odoc with-doc
  2. alcotest with-test & >= "0.8.5"

  1. 0install >= "2.18"
  2. acgtk
  3. anthropic
  4. archetype
  5. atd >= "2.6.0"
  6. atdgen >= "1.13.0" & < "2.8.0" | >= "2.10.0"
  7. atdgen-runtime >= "2.10.0" & < "3.0.1"
  8. atdml
  9. avro-compiler
  10. avro-simple
  11. aws-config
  12. aws-s3 < "4.5.1" | >= "4.8.0"
  13. awsm-codegen
  14. bap-radare2
  15. beluga >= "1.1"
  16. bitcoin >= "3.0"
  17. bizowie-api
  18. boulangerie
  19. builder-web >= "0.2.0"
  20. caisar
  21. calculon
  22. camelot >= "1.4.2"
  23. camels
  24. canary
  25. catala = "0.9.0"
  26. cb-check
  27. cbor >= "0.3"
  28. chess_com_api
  29. colibrics
  30. comby-semantic
  31. commons
  32. containers >= "3.9"
  33. coq-lsp
  34. coq-of-ocaml
  35. coq-serapi < "8.20.0+0.20.0"
  36. current_docker
  37. current_examples
  38. current_git
  39. current_github
  40. current_gitlab
  41. current_slack
  42. current_ssh
  43. current_web
  44. dap
  45. daypack-lib
  46. dblp-api
  47. decoders-yojson >= "0.7.0"
  48. devkit
  49. dnsrobot
  50. docker-api >= "0.2.2"
  51. docker_hub
  52. dot-merlin-reader < "4.9"
  53. dream
  54. dream-inertia
  55. dune-release >= "1.4.0"
  56. dune_deps_extra
  57. ecma-regex
  58. eio_main >= "0.10"
  59. elasticsearch-cli = "0.5"
  60. elpi >= "3.3.1"
  61. fehu < "1.0.0~alpha3"
  62. fiat-p256
  63. frama-c
  64. fred
  65. frenetic
  66. fstar
  67. gapi-ocaml
  68. gdbprofiler
  69. gendarme-json < "0.4.0"
  70. gendarme-yojson
  71. github != "4.0.0"
  72. github-data
  73. github-unix < "4.5.1"
  74. gitlab
  75. goblint >= "2.0.0"
  76. goblint-cil >= "1.8.0"
  77. gopcaml-mode-merlin < "0.0.6"
  78. gradescope_submit
  79. graphql < "0.9.0" | >= "0.14.0"
  80. graphql-async >= "0.14.0"
  81. graphql-cohttp >= "0.13.0"
  82. graphql-lwt >= "0.14.0"
  83. graphql_ppx
  84. gremlin
  85. guardian
  86. h2
  87. hacl_x25519
  88. handlebars-ml
  89. hilite < "0.3.0"
  90. hl_yaml
  91. hockmd
  92. hpack
  93. hsluv
  94. httph
  95. huml
  96. huml-cli
  97. index-bench
  98. ip2location
  99. ip2locationio
  100. irmin-graphql
  101. irmin-tezos
  102. jasmin
  103. jhupllib
  104. jose
  105. js_of_ocaml-compiler < "6.0.1"
  106. jsonrpc < "1.6.0" | >= "1.23.1"
  107. jsonschema
  108. jsonschema-core
  109. jsonschema2atd
  110. jupyter
  111. jupyter-kernel
  112. jwto
  113. kappa-library
  114. karamel
  115. kaun >= "1.0.0~alpha1" & < "1.0.0~alpha3"
  116. kind2
  117. kremlin < "transition"
  118. kubecaml
  119. lablgtk3-extras >= "3.0.1"
  120. lambdapi
  121. learn-ocaml
  122. letsencrypt < "2.0.0"
  123. letters
  124. libsail
  125. lichess_api
  126. linol >= "0.2"
  127. linol-eio
  128. linol-lwt
  129. lockfree >= "0.3.1"
  130. lsp
  131. melange-json = "1.2.0"
  132. melange-json-native
  133. merlin != "4.5-411"
  134. metadb
  135. miaou-core
  136. miaou-driver-web
  137. mirage-crypto-ec
  138. mjson
  139. monorobot
  140. mopsa
  141. morbig >= "0.11.0"
  142. mutaml
  143. nats-client
  144. nats-client-async
  145. neo4j_bolt
  146. nloge
  147. nsq
  148. obuilder
  149. ocaml-lsp-server
  150. ocaml-protoc-plugin >= "6.1.0"
  151. ocaml_db_model
  152. ocaml_pgsql_model
  153. ocf
  154. ochre
  155. ocsigen-start
  156. odoc-driver
  157. oframl
  158. oidc
  159. ojs-base
  160. ojs_base
  161. ometrics < "0.2.0"
  162. opam-check-npm-deps >= "4.1.0"
  163. openai-gym
  164. openapi < "1.0.0"
  165. openapi_router
  166. opencage
  167. openstellina
  168. opium >= "0.19.0"
  169. oraft
  170. orun
  171. osh
  172. oui
  173. ozulip
  174. pa_ppx < "0.19"
  175. pandoc
  176. pbrt_yojson
  177. pds-reachability >= "0.2.3"
  178. pgn_parser
  179. phylogenetics >= "0.2.0"
  180. piece_rope
  181. pkcs11 >= "1.0.0"
  182. pkcs11-driver >= "1.0.0"
  183. polymarket
  184. ppx_deriving_jsonschema
  185. ppx_deriving_yojson
  186. ppx_protocol_conv_json >= "5.2.1"
  187. ppx_yojson
  188. ppx_yojson_conv_lib
  189. prof_spacetime
  190. pxshot
  191. qdrant
  192. qmp >= "0.19.0"
  193. quests
  194. r2pipe
  195. radare2
  196. rdf < "1.0.0"
  197. records >= "1.0.0"
  198. repr-bench
  199. rescriptdep
  200. rfsm >= "2.2"
  201. rocq-devtools
  202. rpclib
  203. rungen
  204. SZXX
  205. safemoney
  206. saga
  207. sail < "0.15"
  208. saturn
  209. saturn_lockfree
  210. satyrographos >= "0.0.2.8"
  211. savvy
  212. semver2
  213. shakuhachi
  214. sihl < "0.2.0" | >= "0.3.0~rc2"
  215. sihl-core
  216. simple_httpd
  217. slack
  218. slug
  219. smaws-lib
  220. smtml >= "0.7.0"
  221. snf_mcp
  222. spectrum_palette_ppx
  223. spotify-web-api
  224. swagger
  225. talon < "1.0.0~alpha3"
  226. tdigest < "2.1.0"
  227. testcontainers
  228. textmate-language >= "0.3.4"
  229. textrazor >= "0.1.1"
  230. tidy_email_sendgrid
  231. timedesc < "0.8.0"
  232. timedesc-json
  233. timere < "0.4.0"
  234. user-agent-parser
  235. vecosek
  236. vercel
  237. vscoq-language-server < "2.3.3"
  238. vsrocq-language-server
  239. webauthn
  240. why3find
  241. xapi-rrd >= "1.9.0"
  242. yojson-bench >= "2.0.2"
  243. yultracer
  244. zanuda
  245. zarr

Conflicts

None