{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://opengdd.org/schema/core/v0.8/clocks.schema.json",
  "title": "OpenGDD v0.7 clocks",
  "type": "object",
  "minProperties": 1,
  "propertyNames": {
    "pattern": "^[A-Za-z0-9_](?:[A-Za-z0-9_-]*[A-Za-z0-9_])?$"
  },
  "additionalProperties": { "$ref": "#/$defs/clock" },
  "$comment": "Cross-clock advances disjointness and complete mode coverage are validator-level checks.",
  "$defs": {
    "runtimeAddress": {
      "type": "string",
      "pattern": "^runtime\\.[A-Za-z0-9_](?:[A-Za-z0-9_-]*[A-Za-z0-9_])?(?:\\.[A-Za-z0-9_](?:[A-Za-z0-9_-]*[A-Za-z0-9_])?)*$"
    },
    "clock": {
      "type": "object",
      "required": ["unit", "modes"],
      "additionalProperties": false,
      "properties": {
        "unit": { "type": "string", "minLength": 1 },
        "advances": {
          "type": "array",
          "items": { "$ref": "#/$defs/runtimeAddress" }
        },
        "modes": {
          "type": "object",
          "minProperties": 1,
          "propertyNames": {
            "pattern": "^[a-z0-9]+(?:-[a-z0-9]+)*$"
          },
          "additionalProperties": {
            "enum": ["running", "paused", "steps", "none"]
          }
        }
      }
    }
  }
}