A Haskell implementation of the current JSON Schema specification (Draft 4).
NOTE: You CANNOT use untrusted JSON data to make schemas. Schemas with circular references can cause infinite loops. See the issue list for more info.
See here.
Run all tests:
stack test
Run only local tests:
stack test hjsonschema:local
Run remote tests (makes GETs to json-schema.org, also temporarily starts an HTTP server on port 1234):
stack test hjsonschema:remote
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Be a correct and fast implementation of the spec.
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Be a useful reference for implementers in other languages. Haskell's high level nature, expressive type system and referential transparency suit this purpose well.
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Passes all the tests in the language agnostic test suite.
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Very modular, which should make it easy to support future versions of the specification.
- Uses the pcre-heavy regular expression library for the "pattern" validator. It should use a library based on the ECMA 262 regex dialect, which the spec requires.
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JSON-Schema-Test-Suite
is vendored from commit # aabcb3427745ade7a0b4d49ff016ad7eda8b898b here. -
src/draft4.json
is from commit # cc8ec81ce0abe2385ebd6c2a6f2d6deb646f874a here.
TJ Weigel created the logo.
Tim Baumann wrote aeson-schema, on which hjsonschema's test code and its implementation of SchemaGraph
were based.
Julian Berman maintains the fantastic language agnostic test suite.