Source file ppx_deriving_jsonschema_runtime.ml

let schema_version = "https://json-schema.org/draft/2020-12/schema"

let json_schema ?id ?title ?description ?definitions types =
  match types with
  | `Assoc types ->
    let metadata =
      List.filter_map
        (fun x -> x)
        [
          Some ("$schema", `String schema_version);
          (match id with
          | None -> None
          | Some id -> Some ("$id", `String id));
          (match title with
          | None -> None
          | Some title -> Some ("title", `String title));
          (match description with
          | None -> None
          | Some description -> Some ("description", `String description));
          (match definitions with
          | None -> None
          | Some defs -> Some ("$defs", `Assoc defs));
        ]
    in
    `Assoc (metadata @ types)