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-2.0.0.tbz
sha256=ab5d863f7f951a8f7fb4a708399ca2da2cf139a5e0af7818145c20295420cb1a
sha512=3ea982dbeef7ec8da54d29124ddb8b86f90583eb96ed3947851cedec9e3d2d47b981e3465d41f2c94943e6865ba6a9a51c6f0252efa6df2386d398b679aae8f2

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 Jun 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
  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"
  7. avro-compiler
  8. avro-simple
  9. aws-config
  10. aws-s3 < "4.5.1" | >= "4.8.0"
  11. awsm-codegen
  12. bap-radare2
  13. bitcoin >= "3.0"
  14. boulangerie
  15. builder-web >= "0.2.0"
  16. caisar
  17. calculon != "0.5"
  18. calculon-redis-lib
  19. calculon-web = "0.6"
  20. camelot >= "1.3.0"
  21. camels
  22. canary
  23. catala = "0.9.0"
  24. cb-check
  25. cbor >= "0.3"
  26. cconv-ppx
  27. chess_com_api
  28. colibrics
  29. comby-semantic
  30. commons
  31. containers >= "3.9"
  32. coq-lsp
  33. coq-of-ocaml
  34. coq-serapi >= "8.10.0+0.7.0" & < "8.20.0+0.20.0"
  35. current_docker
  36. current_examples
  37. current_git
  38. current_github
  39. current_gitlab
  40. current_slack
  41. current_ssh
  42. current_web
  43. dap
  44. daypack-lib
  45. dblp-api
  46. decoders-yojson >= "0.7.0"
  47. devkit
  48. docker-api >= "0.2.2"
  49. docker_hub
  50. dot-merlin-reader < "4.9"
  51. dream
  52. dream-inertia
  53. dune-release >= "1.4.0"
  54. dune_deps_extra
  55. elasticsearch-cli = "0.5"
  56. elpi >= "3.3.1"
  57. fehu
  58. fiat-p256
  59. frama-c
  60. fred
  61. frenetic
  62. fstar
  63. gapi-ocaml
  64. gdbprofiler
  65. gemini < "0.3.0"
  66. gendarme-json < "0.4.0"
  67. gendarme-yojson
  68. github != "4.0.0"
  69. github-data
  70. github-unix < "4.5.1"
  71. gitlab
  72. goblint >= "2.0.0"
  73. goblint-cil >= "1.8.0"
  74. gopcaml-mode-merlin < "0.0.6"
  75. graphql < "0.9.0" | >= "0.14.0"
  76. graphql-async >= "0.14.0"
  77. graphql-cohttp >= "0.13.0"
  78. graphql-lwt >= "0.14.0"
  79. graphql_ppx
  80. gremlin
  81. h2
  82. hacl_x25519
  83. handlebars-ml
  84. hilite < "0.3.0"
  85. hl_yaml
  86. hockmd
  87. horned_worm
  88. hpack
  89. hsluv
  90. httph
  91. huml
  92. huml-cli
  93. index-bench
  94. ip2location
  95. ip2locationio
  96. irmin-graphql
  97. irmin-tezos
  98. jasmin
  99. jhupllib
  100. jose
  101. js_of_ocaml-compiler < "6.0.1"
  102. jsonrpc < "1.6.0" | >= "1.23.1"
  103. jsonschema
  104. jsonschema2atd
  105. jupyter
  106. jupyter-kernel
  107. jwto
  108. kappa-library
  109. karamel
  110. kaun >= "1.0.0~alpha1"
  111. kind2
  112. kremlin < "transition"
  113. kubecaml
  114. lablgtk3-extras >= "3.0.1"
  115. lambdapi
  116. learn-ocaml
  117. letsencrypt
  118. letters
  119. libsail
  120. lichess_api
  121. linol >= "0.2"
  122. linol-eio
  123. linol-lwt
  124. lsp
  125. melange-json = "1.2.0"
  126. melange-json-native
  127. merlin != "4.5-411"
  128. metadb
  129. mirage-crypto-ec
  130. mjson
  131. monorobot
  132. mopsa
  133. morbig >= "0.11.0"
  134. mutaml
  135. nloge
  136. nsq
  137. obuilder
  138. ocaml-lsp-server
  139. ocaml-protoc-plugin >= "6.1.0"
  140. ocaml_db_model
  141. ocaml_pgsql_model
  142. ocf
  143. ocsigen-start
  144. odoc-driver
  145. oframl
  146. oidc
  147. ojs-base
  148. ojs_base
  149. ometrics < "0.2.0"
  150. opam-check-npm-deps >= "4.1.0"
  151. openai-gym
  152. openapi < "1.0.0"
  153. openapi_router
  154. opencage
  155. openstellina
  156. opium >= "0.19.0"
  157. oraft
  158. orun
  159. osh
  160. ozulip
  161. pa_ppx < "0.19"
  162. pandoc
  163. pbrt_yojson
  164. pds-reachability >= "0.2.3"
  165. petr4
  166. pgn_parser
  167. phylogenetics >= "0.2.0"
  168. pkcs11 >= "1.0.0"
  169. pkcs11-driver >= "1.0.0"
  170. polymarket
  171. ppx_deriving_jsonschema
  172. ppx_deriving_yojson
  173. ppx_protocol_conv_json < "5.0.0" | >= "5.2.1"
  174. ppx_yojson
  175. ppx_yojson_conv < "v0.13.0"
  176. ppx_yojson_conv_lib
  177. prof_spacetime
  178. qmp >= "0.19.0"
  179. quests
  180. r2pipe
  181. radare2
  182. rdf < "1.0.0"
  183. records = "0.6.0" | >= "1.0.0"
  184. repr-bench
  185. rfsm >= "2.2"
  186. rocq-devtools
  187. rpclib
  188. rungen
  189. SZXX
  190. safemoney
  191. saga
  192. sail < "0.15"
  193. satyrographos != "0.0.2.7"
  194. savvy
  195. semver2
  196. sihl < "0.2.0" | >= "0.3.0~rc2"
  197. sihl-core
  198. slack
  199. slug
  200. smaws-lib
  201. smtml >= "0.7.0"
  202. snf_mcp
  203. spotify-web-api
  204. swagger
  205. talon
  206. tdigest < "2.1.0"
  207. textmate-language >= "0.3.4"
  208. textrazor >= "0.1.1"
  209. tezos-context-hash-irmin
  210. tidy_email_sendgrid
  211. timedesc < "0.8.0"
  212. timedesc-json
  213. timere < "0.4.0"
  214. user-agent-parser
  215. vecosek
  216. vercel
  217. vscoq-language-server < "2.3.3"
  218. vsrocq-language-server
  219. webauthn
  220. why3find
  221. xapi-rrd >= "1.9.0"
  222. yojson-bench < "2.0.1"
  223. zanuda
  224. zarr

Conflicts

None