{
  "title": "Parameter",
  "@id": "stencila:Parameter",
  "extends": "Variable",
  "role": "secondary",
  "status": "experimental",
  "category": "code",
  "description": "A parameter that can be set and used in evaluated code.",
  "properties": {
    "type": {
      "@id": "schema:type",
      "description": "The name of the type.",
      "type": "string",
      "enum": [
        "Parameter"
      ],
      "default": "Parameter",
      "from": "Entity"
    },
    "id": {
      "@id": "schema:id",
      "description": "The identifier for this item.",
      "type": "string",
      "from": "Entity"
    },
    "meta": {
      "@id": "stencila:meta",
      "description": "Metadata associated with this item.",
      "type": "object",
      "from": "Entity"
    },
    "name": {
      "@id": "schema:name",
      "description": "The name of the variable.",
      "type": "string",
      "pattern": "[a-z_][A-z0-9_]*",
      "$comment": "This regex allows for snake_case and camelCase names but excludes\nPascalCase for names.\n",
      "from": "Variable"
    },
    "isReadonly": {
      "@id": "schema:readonlyValue",
      "description": "Whether or not a property is mutable. Default is false.",
      "$comment": "If `isReadonly` is `true` and `value` is defined then changes to `value`\nshould not be allowed.\n",
      "type": "boolean",
      "default": false,
      "from": "Variable"
    },
    "validator": {
      "@id": "stencila:validator",
      "description": "The validator that the value is validated against.",
      "allOf": [
        {
          "$ref": "ValidatorTypes.schema.json"
        }
      ],
      "from": "Variable"
    },
    "value": {
      "@id": "schema:value",
      "description": "The value of the variable.",
      "allOf": [
        {
          "$ref": "Node.schema.json"
        }
      ],
      "from": "Variable"
    },
    "default": {
      "@id": "schema:defaultValue",
      "description": "The default value of the parameter.",
      "allOf": [
        {
          "$ref": "Node.schema.json"
        }
      ],
      "from": "Parameter"
    },
    "isRequired": {
      "@id": "schema:valueRequired",
      "description": "Is this parameter required, if not it should have a default or default is assumed to be null.",
      "type": "boolean",
      "from": "Parameter"
    },
    "isVariadic": {
      "@id": "stencila:isVariadic",
      "description": "Indicates that this parameter is variadic and can accept multiple arguments.",
      "type": "boolean",
      "from": "Parameter"
    },
    "isExtensible": {
      "@id": "stencila:isExtensible",
      "description": "Indicates that this parameter is variadic and can accept multiple named arguments.",
      "type": "boolean",
      "from": "Parameter"
    }
  },
  "file": "Parameter.schema.yaml",
  "children": [],
  "descendants": [],
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://schema.stenci.la/v1/Parameter.schema.json",
  "source": "https://github.com/stencila/schema/blob/master/schema/Parameter.schema.yaml",
  "type": "object",
  "additionalProperties": false,
  "required": [
    "type",
    "name"
  ],
  "propertyAliases": {}
}