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. jsonschema2atd
  107. jupyter
  108. jupyter-kernel
  109. jwto
  110. kappa-library
  111. karamel
  112. kaun >= "1.0.0~alpha1" & < "1.0.0~alpha3"
  113. kind2
  114. kremlin < "transition"
  115. kubecaml
  116. lablgtk3-extras >= "3.0.1"
  117. lambdapi
  118. learn-ocaml
  119. letsencrypt < "2.0.0"
  120. letters
  121. libsail
  122. lichess_api
  123. linol >= "0.2"
  124. linol-eio
  125. linol-lwt
  126. lsp
  127. melange-json = "1.2.0"
  128. melange-json-native
  129. merlin != "4.5-411"
  130. metadb
  131. mirage-crypto-ec
  132. mjson
  133. monorobot
  134. mopsa
  135. morbig >= "0.11.0"
  136. mutaml
  137. neo4j_bolt
  138. nloge
  139. nsq
  140. obuilder
  141. ocaml-lsp-server
  142. ocaml-protoc-plugin >= "6.1.0"
  143. ocaml_db_model
  144. ocaml_pgsql_model
  145. ocf
  146. ocsigen-start
  147. odoc-driver
  148. oframl
  149. oidc
  150. ojs-base
  151. ojs_base
  152. ometrics < "0.2.0"
  153. opam-check-npm-deps >= "4.1.0"
  154. openai-gym
  155. openapi < "1.0.0"
  156. openapi_router
  157. opencage
  158. openstellina
  159. opium >= "0.19.0"
  160. oraft
  161. orun
  162. osh
  163. oui
  164. ozulip
  165. pa_ppx < "0.19"
  166. pandoc
  167. pbrt_yojson
  168. pds-reachability >= "0.2.3"
  169. petr4
  170. pgn_parser
  171. phylogenetics >= "0.2.0"
  172. pkcs11 >= "1.0.0"
  173. pkcs11-driver >= "1.0.0"
  174. polymarket
  175. ppx_deriving_jsonschema
  176. ppx_deriving_yojson
  177. ppx_protocol_conv_json < "5.0.0" | >= "5.2.1"
  178. ppx_yojson
  179. ppx_yojson_conv < "v0.13.0"
  180. ppx_yojson_conv_lib
  181. prof_spacetime
  182. pxshot
  183. qdrant
  184. qmp >= "0.19.0"
  185. quests
  186. r2pipe
  187. radare2
  188. rdf < "1.0.0"
  189. records = "0.6.0" | >= "1.0.0"
  190. repr-bench
  191. rfsm >= "2.2"
  192. rocq-devtools
  193. rpclib
  194. rungen
  195. SZXX
  196. safemoney
  197. saga
  198. sail < "0.15"
  199. satyrographos != "0.0.2.7"
  200. savvy
  201. semver2
  202. shakuhachi
  203. sihl < "0.2.0" | >= "0.3.0~rc2"
  204. sihl-core
  205. simple_httpd
  206. slack
  207. slug
  208. smaws-lib
  209. smtml >= "0.7.0"
  210. snf_mcp
  211. spectrum_palette_ppx
  212. spotify-web-api
  213. swagger
  214. talon < "1.0.0~alpha3"
  215. tdigest < "2.1.0"
  216. testcontainers
  217. textmate-language >= "0.3.4"
  218. textrazor >= "0.1.1"
  219. tidy_email_sendgrid
  220. timedesc < "0.8.0"
  221. timedesc-json
  222. timere < "0.4.0"
  223. user-agent-parser
  224. vecosek
  225. vercel
  226. vscoq-language-server < "2.3.3"
  227. vsrocq-language-server
  228. webauthn
  229. why3find
  230. xapi-rrd >= "1.9.0"
  231. yojson-bench = "2.0.1"
  232. yultracer
  233. zanuda
  234. zarr

Conflicts

None