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

Conflicts

None