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. boulangerie
  18. builder-web >= "0.2.0"
  19. caisar
  20. calculon != "0.5"
  21. calculon-redis-lib
  22. calculon-web = "0.6"
  23. camelot >= "1.3.0"
  24. camels
  25. canary
  26. catala = "0.9.0"
  27. cb-check
  28. cbor >= "0.3"
  29. cconv-ppx
  30. chess_com_api
  31. colibrics
  32. comby-semantic
  33. commons
  34. containers >= "3.9"
  35. coq-lsp
  36. coq-of-ocaml
  37. coq-serapi >= "8.10.0+0.7.0" & < "8.20.0+0.20.0"
  38. current_docker
  39. current_examples
  40. current_git
  41. current_github
  42. current_gitlab
  43. current_slack
  44. current_ssh
  45. current_web
  46. dap
  47. daypack-lib
  48. dblp-api
  49. decoders-yojson >= "0.7.0"
  50. devkit
  51. dnsrobot
  52. docker-api >= "0.2.2"
  53. docker_hub
  54. dot-merlin-reader < "4.9"
  55. dream
  56. dream-inertia
  57. dune-release >= "1.4.0"
  58. dune_deps_extra
  59. eio_main >= "0.10"
  60. elasticsearch-cli = "0.5"
  61. elpi >= "3.3.1"
  62. fehu < "1.0.0~alpha3"
  63. fiat-p256
  64. frama-c
  65. fred
  66. frenetic
  67. fstar
  68. gapi-ocaml
  69. gdbprofiler
  70. gemini < "0.3.0"
  71. gendarme-json < "0.4.0"
  72. gendarme-yojson
  73. github != "4.0.0"
  74. github-data
  75. github-unix < "4.5.1"
  76. gitlab
  77. goblint >= "2.0.0"
  78. goblint-cil >= "1.8.0"
  79. gopcaml-mode-merlin < "0.0.6"
  80. gradescope_submit
  81. graphql < "0.9.0" | >= "0.14.0"
  82. graphql-async >= "0.14.0"
  83. graphql-cohttp >= "0.13.0"
  84. graphql-lwt >= "0.14.0"
  85. graphql_ppx
  86. gremlin
  87. guardian
  88. h2
  89. hacl_x25519
  90. handlebars-ml
  91. hilite < "0.3.0"
  92. hl_yaml
  93. hockmd
  94. horned_worm
  95. hpack
  96. hsluv
  97. httph
  98. huml
  99. huml-cli
  100. index-bench
  101. ip2location
  102. ip2locationio
  103. irmin-graphql
  104. irmin-tezos
  105. jasmin
  106. jhupllib
  107. jose
  108. js_of_ocaml-compiler < "6.0.1"
  109. jsonrpc < "1.6.0" | >= "1.23.1"
  110. jsonschema
  111. jsonschema2atd
  112. jupyter
  113. jupyter-kernel
  114. jwto
  115. kappa-library
  116. karamel
  117. kaun >= "1.0.0~alpha1" & < "1.0.0~alpha3"
  118. kind2
  119. kremlin < "transition"
  120. kubecaml
  121. lablgtk3-extras >= "3.0.1"
  122. lambdapi
  123. learn-ocaml
  124. letsencrypt
  125. letters
  126. libsail
  127. lichess_api
  128. linol >= "0.2"
  129. linol-eio
  130. linol-lwt
  131. lockfree >= "0.3.1"
  132. lsp
  133. melange-json = "1.2.0"
  134. melange-json-native
  135. merlin != "4.5-411"
  136. metadb
  137. mirage-crypto-ec
  138. mjson
  139. monorobot
  140. mopsa
  141. morbig >= "0.11.0"
  142. mutaml
  143. neo4j_bolt
  144. nloge
  145. nsq
  146. obuilder
  147. ocaml-lsp-server
  148. ocaml-protoc-plugin >= "6.1.0"
  149. ocaml_db_model
  150. ocaml_pgsql_model
  151. ocf
  152. ocsigen-start
  153. odoc-driver
  154. oframl
  155. oidc
  156. ojs-base
  157. ojs_base
  158. ometrics < "0.2.0"
  159. opam-check-npm-deps >= "4.1.0"
  160. openai-gym
  161. openapi < "1.0.0"
  162. openapi_router
  163. opencage
  164. openstellina
  165. opium >= "0.19.0"
  166. oraft
  167. orun
  168. osh
  169. oui
  170. ozulip
  171. pa_ppx < "0.19"
  172. pandoc
  173. pbrt_yojson
  174. pds-reachability >= "0.2.3"
  175. petr4
  176. pgn_parser
  177. phylogenetics >= "0.2.0"
  178. piece_rope
  179. pkcs11 >= "1.0.0"
  180. pkcs11-driver >= "1.0.0"
  181. polymarket
  182. ppx_deriving_jsonschema
  183. ppx_deriving_yojson
  184. ppx_protocol_conv_json < "5.0.0" | >= "5.2.1"
  185. ppx_yojson
  186. ppx_yojson_conv < "v0.13.0"
  187. ppx_yojson_conv_lib
  188. prof_spacetime
  189. pxshot
  190. qdrant
  191. qmp >= "0.19.0"
  192. quests
  193. r2pipe
  194. radare2
  195. rdf < "1.0.0"
  196. records = "0.6.0" | >= "1.0.0"
  197. repr-bench
  198. rfsm >= "2.2"
  199. rocq-devtools
  200. rpclib
  201. rungen
  202. SZXX
  203. safemoney
  204. saga
  205. sail < "0.15"
  206. saturn
  207. saturn_lockfree
  208. satyrographos != "0.0.2.7"
  209. savvy
  210. semver2
  211. shakuhachi
  212. sihl < "0.2.0" | >= "0.3.0~rc2"
  213. sihl-core
  214. simple_httpd
  215. slack
  216. slug
  217. smaws-lib
  218. smtml >= "0.7.0"
  219. snf_mcp
  220. spectrum_palette_ppx
  221. spotify-web-api
  222. swagger
  223. talon < "1.0.0~alpha3"
  224. tdigest < "2.1.0"
  225. testcontainers
  226. textmate-language >= "0.3.4"
  227. textrazor >= "0.1.1"
  228. tidy_email_sendgrid
  229. timedesc < "0.8.0"
  230. timedesc-json
  231. timere < "0.4.0"
  232. user-agent-parser
  233. vecosek
  234. vercel
  235. vscoq-language-server < "2.3.3"
  236. vsrocq-language-server
  237. webauthn
  238. why3find
  239. xapi-rrd >= "1.9.0"
  240. yojson-bench >= "2.0.2"
  241. yultracer
  242. zanuda
  243. zarr

Conflicts

None