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. hilite < "0.3.0"
  96. hl_yaml
  97. hockmd
  98. hpack
  99. hsluv
  100. httph
  101. huml
  102. huml-cli
  103. index-bench
  104. ip2location
  105. ip2locationio
  106. irmin-graphql
  107. irmin-tezos
  108. jasmin
  109. jhupllib
  110. jose
  111. js_of_ocaml-compiler < "6.0.1"
  112. jsonrpc < "1.6.0" | >= "1.23.1"
  113. jsonschema
  114. jsonschema-core
  115. jsonschema2atd
  116. jupyter
  117. jupyter-kernel
  118. jwto
  119. kappa-library
  120. karamel
  121. kaun >= "1.0.0~alpha1" & < "1.0.0~alpha3"
  122. kind2
  123. kremlin < "transition"
  124. kubecaml
  125. lablgtk3-extras >= "3.0.1"
  126. lambdapi
  127. learn-ocaml
  128. letsencrypt < "2.0.0"
  129. letters
  130. libsail
  131. lichess_api
  132. linol >= "0.2"
  133. linol-eio
  134. linol-lwt
  135. lockfree >= "0.3.1"
  136. lsp
  137. melange-json = "1.2.0"
  138. melange-json-native
  139. merlin != "4.5-411"
  140. metadb
  141. miaou-core
  142. miaou-driver-web
  143. mirage-crypto-ec
  144. mjson
  145. monorobot
  146. mopsa
  147. morbig >= "0.11.0"
  148. mutaml
  149. nats-client
  150. nats-client-async
  151. neo4j_bolt
  152. nloge
  153. nsq
  154. obuilder
  155. ocaml-lsp-server
  156. ocaml-protoc-plugin >= "6.1.0"
  157. ocaml_db_model
  158. ocaml_pgsql_model
  159. ocf
  160. ochre
  161. ocsigen-start
  162. odoc-driver
  163. oframl
  164. oidc
  165. ojs-base
  166. ojs_base
  167. ometrics < "0.2.0"
  168. opam-check-npm-deps >= "4.1.0"
  169. openai-gym
  170. openapi < "1.0.0"
  171. openapi_router
  172. opencage
  173. openstellina
  174. opium >= "0.19.0"
  175. oraft
  176. orun
  177. osh
  178. oui
  179. ozulip
  180. pa_ppx < "0.19"
  181. pandoc
  182. pbrt_yojson
  183. pds-reachability >= "0.2.3"
  184. pgn_parser
  185. phylogenetics >= "0.2.0"
  186. piece_rope
  187. pkcs11 >= "1.0.0"
  188. pkcs11-driver >= "1.0.0"
  189. polymarket
  190. ppx_deriving_jsonschema
  191. ppx_deriving_yojson
  192. ppx_protocol_conv_json >= "5.2.1"
  193. ppx_yojson
  194. ppx_yojson_conv_lib
  195. prof_spacetime
  196. pxshot
  197. qdrant
  198. qmp >= "0.19.0"
  199. quests
  200. r2pipe
  201. radare2
  202. rdf < "1.0.0"
  203. records >= "1.0.0"
  204. repr-bench
  205. rescriptdep
  206. rfsm >= "2.2"
  207. rocq-devtools
  208. rpclib
  209. rungen
  210. SZXX
  211. safemoney
  212. saga
  213. sail < "0.15"
  214. saturn
  215. saturn_lockfree
  216. satyrographos >= "0.0.2.8"
  217. savvy
  218. semver2
  219. shakuhachi
  220. sihl < "0.2.0" | >= "0.3.0~rc2"
  221. sihl-core
  222. simple_httpd
  223. slack
  224. slug
  225. smaws-lib
  226. smtml >= "0.7.0"
  227. snf_mcp
  228. spectrum_palette_ppx
  229. spotify-web-api
  230. swagger
  231. talon < "1.0.0~alpha3"
  232. tdigest < "2.1.0"
  233. testcontainers
  234. textmate-language >= "0.3.4"
  235. textrazor >= "0.1.1"
  236. tidy_email_sendgrid
  237. timedesc < "0.8.0"
  238. timedesc-json
  239. timere < "0.4.0"
  240. transom
  241. user-agent-parser
  242. vecosek
  243. vercel
  244. vscoq-language-server < "2.3.3"
  245. vsrocq-language-server
  246. webauthn
  247. why3find
  248. xapi-rrd >= "1.9.0"
  249. yojson-bench >= "2.0.2"
  250. yultracer
  251. zanuda
  252. zarr

Conflicts

None