Stable serialization format (including JSON schema) and meta-metamodel describing Languages, Concepts, Interfaces, Annotations, Enumerations, PrimitiveTypes, Properties, Containments, and References.

The standard library contains classifiers Node and INamed, and primitive types Boolean, String, Integer, and JSON.

Contents

Known issues

lioncore.json misses used language builtins

Details: Is serialization chunk of LionCore missing dependencies? #380

The JSON representation of LionCore M3 uses elements of builtins language, but doesn’t list it in the usedLanguages section. It is inlined into the metamodel specification at https://lionweb.io/specification/2023.1/metametamodel/metametamodel.html#_meta_meta_model, and available as separate file at https://lionweb.io/specification/2023.1/metametamodel/lioncore.json.

Instead of

Incorrect beginning of lioncore.json
{
  "serializationFormatVersion": "2023.1",
  "languages": [
    {
      "key": "LionCore-M3",
      "version": "2023.1"
    }
  ],
  "nodes": [
  ...

It should state

Corrected beginning of lioncore.json
{
  "serializationFormatVersion": "2023.1",
  "languages": [
    {
      "key": "LionCore-M3",
      "version": "2023.1"
    },
    {
      "key": "LionCore-builtins",
      "version": "2023.1"
    }
  ],
  "nodes": [
  ...

Example implementations

Example usages

  • PROPS Properties Language  repo