mojo-json

mojo-json is a JSON serializer written in Mojo. The runtime and the code generator are Mojo. They do not wrap simdjson or any other C, C++, or Rust JSON library.

• Why JSON

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  What JSON is, how objects, arrays, strings, and numbers work, and how pretty-print, JSON Lines, Pointer, and Patch fit together.

  Read Why JSON

• Instructions

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  Install Mojo 1.1.0 with pixi, write a JSON Schema, generate Mojo, run the tests, and publish this site.

  Open Instructions

• Examples

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  Encode and decode generated types, JsonValue, JSON Lines, pretty-print, Pointer, and Patch.

  See Examples

• Techniques

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  How encode and decode work: pre-sized writes, SIMD scan, SWAR digits, one-pass floats, and which ideas were measured and dropped.

  Read Techniques

• Test data

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  What lives under testdata/ (schemas, oracle text, JSON Lines, Pointer samples) and why each file is there.

  Read Test data