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(**************************************************************************)
(*                                                                        *)
(*                                 OCaml                                  *)
(*                                                                        *)
(*                         Alain Frisch, LexiFi                           *)
(*                                                                        *)
(*   Copyright 2012 Institut National de Recherche en Informatique et     *)
(*     en Automatique.                                                    *)
(*                                                                        *)
(*   All rights reserved.  This file is distributed under the terms of    *)
(*   the GNU Lesser General Public License version 2.1, with the          *)
(*   special exception on linking described in the file LICENSE.          *)
(*                                                                        *)
(**************************************************************************)

(* Support for some of the builtin attributes:

   ocaml.deprecated
   ocaml.error
   ocaml.ppwarning
   ocaml.warning
   ocaml.warnerror
   ocaml.explicit_arity (for camlp4/camlp5)
   ocaml.warn_on_literal_pattern
   ocaml.deprecated_mutable
   ocaml.immediate
   ocaml.boxed / ocaml.unboxed
*)


val check_deprecated: Location.t -> Parsetree.attributes -> string -> unit
val check_deprecated_inclusion:
  def:Location.t -> use:Location.t -> Location.t -> Parsetree.attributes ->
  Parsetree.attributes -> string -> unit
val deprecated_of_attrs: Parsetree.attributes -> string option
val deprecated_of_sig: Parsetree.signature -> string option
val deprecated_of_str: Parsetree.structure -> string option

val check_deprecated_mutable:
    Location.t -> Parsetree.attributes -> string -> unit
val check_deprecated_mutable_inclusion:
  def:Location.t -> use:Location.t -> Location.t -> Parsetree.attributes ->
  Parsetree.attributes -> string -> unit

val error_of_extension: Parsetree.extension -> Location.error

val warning_attribute: ?ppwarning:bool -> Parsetree.attribute -> unit
  (** Apply warning settings from the specified attribute.
      "ocaml.warning"/"ocaml.warnerror" (and variants without the prefix)
      are processed and other attributes are ignored.

      Also implement ocaml.ppwarning (unless ~ppwarning:false is
      passed).
  *)

val warning_scope:
  ?ppwarning:bool ->
  Parsetree.attributes -> (unit -> 'a) -> 'a
  (** Execute a function in a new scope for warning settings.  This
      means that the effect of any call to [warning_attribute] during
      the execution of this function will be discarded after
      execution.

      The function also takes a list of attributes which are processed
      with [warning_attribute] in the fresh scope before the function
      is executed.
  *)

val warn_on_literal_pattern: Parsetree.attributes -> bool
val explicit_arity: Parsetree.attributes -> bool


val immediate: Parsetree.attributes -> bool

val has_unboxed: Parsetree.attributes -> bool
val has_boxed: Parsetree.attributes -> bool