Module Attr_helper

type error =
  1. | Multiple_attributes of string
  2. | No_payload_expected of string
val get_no_payload_attribute : string -> Parsetree.attributes -> string Asttypes.loc option
val has_no_payload_attribute : string -> Parsetree.attributes -> bool
exception Error of Location.t * error
val report_error : error Format_doc.format_printer
val report_error_doc : error Format_doc.printer