@document

@document marks a type as the document-root schema. The toolchain gathers every block instance that matches the schema's @child/@children fields and assembles them into one document value that wcl check validates.

Document schemas compose per namespace: when several @document types are visible (for example a library's and your own), they merge, so you can import a base schema and still add your own top-level fields.

@document type Config {
  @children("server") servers: list<Server>
}

@block("server") type Server {
  @inline(0) name: identifier
  port: u16
}

server web { port: 8080 }