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

Conflicts

None