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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2018 *)
(* <O___,, * (see CREDITS file for the list of authors) *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(* * (see LICENSE file for the text of the license) *)
(************************************************************************)
(** Additional information worn by exceptions. *)
type 'a t
(** Information containing a given type. *)
type info
(** All information *)
type iexn = exn * info
(** Information-wearing exceptions *)
val make : unit -> 'a t
(** Create a new piece of information. *)
val null : info
(** No information *)
val add : info -> 'a t -> 'a -> info
(** Add information to an exception. *)
val get : info -> 'a t -> 'a option
(** Get information worn by an exception. Returns [None] if undefined. *)
val info : exn -> info
(** Retrieve the information of the last exception raised. *)
val iraise : iexn -> 'a
(** Raise the given enriched exception. *)
val raise : ?info:info -> exn -> 'a
(** Raise the given exception with additional information. *)
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