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-2.0.1.tbz
sha256=8bc8bc722a4a94656a58394f17f9f8a406267343ab87d77202db930584a0c836
sha512=93ebabd3247f1b5826827472229188c5ac1b4d2395eb8121a22b35acd773eedd290e6b8de1f067020fc868da7c05a60408091eebc0b305a67408d558a3a94c10

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: 07 Jul 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. atdml
  8. avro-compiler
  9. avro-simple
  10. aws-config
  11. aws-s3 < "4.5.1" | >= "4.8.0"
  12. awsm-codegen
  13. bap-radare2
  14. bitcoin >= "3.0"
  15. boulangerie
  16. builder-web >= "0.2.0"
  17. caisar
  18. calculon != "0.5"
  19. calculon-redis-lib
  20. calculon-web = "0.6"
  21. camelot >= "1.3.0"
  22. camels
  23. canary
  24. catala = "0.9.0"
  25. cb-check
  26. cbor >= "0.3"
  27. cconv-ppx
  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 >= "8.10.0+0.7.0" & < "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. elasticsearch-cli = "0.5"
  58. elpi >= "3.3.1"
  59. fehu < "1.0.0~alpha3"
  60. fiat-p256
  61. frama-c
  62. fred
  63. frenetic
  64. fstar
  65. gapi-ocaml
  66. gdbprofiler
  67. gemini < "0.3.0"
  68. gendarme-json < "0.4.0"
  69. gendarme-yojson
  70. github != "4.0.0"
  71. github-data
  72. github-unix < "4.5.1"
  73. gitlab
  74. goblint >= "2.0.0"
  75. goblint-cil >= "1.8.0"
  76. gopcaml-mode-merlin < "0.0.6"
  77. graphql < "0.9.0" | >= "0.14.0"
  78. graphql-async >= "0.14.0"
  79. graphql-cohttp >= "0.13.0"
  80. graphql-lwt >= "0.14.0"
  81. graphql_ppx
  82. gremlin
  83. h2
  84. hacl_x25519
  85. handlebars-ml
  86. hilite < "0.3.0"
  87. hl_yaml
  88. hockmd
  89. horned_worm
  90. hpack
  91. hsluv
  92. httph
  93. huml
  94. huml-cli
  95. index-bench
  96. ip2location
  97. ip2locationio
  98. irmin-graphql
  99. irmin-tezos
  100. jasmin
  101. jhupllib
  102. jose
  103. js_of_ocaml-compiler < "6.0.1"
  104. jsonrpc < "1.6.0" | >= "1.23.1"
  105. jsonschema
  106. jsonschema-core
  107. jsonschema2atd
  108. jupyter
  109. jupyter-kernel
  110. jwto
  111. kappa-library
  112. karamel
  113. kaun >= "1.0.0~alpha1" & < "1.0.0~alpha3"
  114. kind2
  115. kremlin < "transition"
  116. kubecaml
  117. lablgtk3-extras >= "3.0.1"
  118. lambdapi
  119. learn-ocaml
  120. letsencrypt < "2.0.0"
  121. letters
  122. libsail
  123. lichess_api
  124. linol >= "0.2"
  125. linol-eio
  126. linol-lwt
  127. lsp
  128. melange-json = "1.2.0"
  129. melange-json-native
  130. merlin != "4.5-411"
  131. metadb
  132. mirage-crypto-ec
  133. mjson
  134. monorobot
  135. mopsa
  136. morbig >= "0.11.0"
  137. mutaml
  138. nats-client
  139. nats-client-async
  140. neo4j_bolt
  141. nloge
  142. nsq
  143. obuilder
  144. ocaml-lsp-server
  145. ocaml-protoc-plugin >= "6.1.0"
  146. ocaml_db_model
  147. ocaml_pgsql_model
  148. ocf
  149. ochre
  150. ocsigen-start
  151. odoc-driver
  152. oframl
  153. oidc
  154. ojs-base
  155. ojs_base
  156. ometrics < "0.2.0"
  157. opam-check-npm-deps >= "4.1.0"
  158. openai-gym
  159. openapi < "1.0.0"
  160. openapi_router
  161. opencage
  162. openstellina
  163. opium >= "0.19.0"
  164. oraft
  165. orun
  166. osh
  167. oui
  168. ozulip
  169. pa_ppx < "0.19"
  170. pandoc
  171. pbrt_yojson
  172. pds-reachability >= "0.2.3"
  173. petr4
  174. pgn_parser
  175. phylogenetics >= "0.2.0"
  176. pkcs11 >= "1.0.0"
  177. pkcs11-driver >= "1.0.0"
  178. polymarket
  179. ppx_deriving_jsonschema
  180. ppx_deriving_yojson
  181. ppx_protocol_conv_json < "5.0.0" | >= "5.2.1"
  182. ppx_yojson
  183. ppx_yojson_conv < "v0.13.0"
  184. ppx_yojson_conv_lib
  185. prof_spacetime
  186. pxshot
  187. qdrant
  188. qmp >= "0.19.0"
  189. quests
  190. r2pipe
  191. radare2
  192. rdf < "1.0.0"
  193. records = "0.6.0" | >= "1.0.0"
  194. repr-bench
  195. rfsm >= "2.2"
  196. rocq-devtools
  197. rpclib
  198. rungen
  199. SZXX
  200. safemoney
  201. saga
  202. sail < "0.15"
  203. satyrographos != "0.0.2.7"
  204. savvy
  205. semver2
  206. shakuhachi
  207. sihl < "0.2.0" | >= "0.3.0~rc2"
  208. sihl-core
  209. simple_httpd
  210. slack
  211. slug
  212. smaws-lib
  213. smtml >= "0.7.0"
  214. snf_mcp
  215. spectrum_palette_ppx
  216. spotify-web-api
  217. swagger
  218. talon < "1.0.0~alpha3"
  219. tdigest < "2.1.0"
  220. testcontainers
  221. textmate-language >= "0.3.4"
  222. textrazor >= "0.1.1"
  223. tidy_email_sendgrid
  224. timedesc < "0.8.0"
  225. timedesc-json
  226. timere < "0.4.0"
  227. user-agent-parser
  228. vecosek
  229. vercel
  230. vscoq-language-server < "2.3.3"
  231. vsrocq-language-server
  232. webauthn
  233. why3find
  234. xapi-rrd >= "1.9.0"
  235. yojson-bench = "2.0.1"
  236. yultracer
  237. zanuda
  238. zarr

Conflicts

None