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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
open Xml_datatype
type state_id
val initial_state_id : state_id
val dummy_state_id : state_id
val fresh_state_id : unit -> state_id
val string_of_state_id : state_id -> string
val state_id_of_int : int -> state_id
val int_of_state_id : state_id -> int
val newer_than : state_id -> state_id -> bool
(* XML marshalling *)
val of_state_id : state_id -> xml
val to_state_id : xml -> state_id
(* Attaches to an exception the concerned state id, plus an optional
* state id that is a valid state id before the error.
* Backtracking to the valid id is safe.
* The initial_state_id is assumed to be safe. *)
val add_state_id : exn -> ?valid:state_id -> state_id -> exn
val get_state_id : exn -> (state_id * state_id) option
module StateidOrderedType : Map.OrderedType with type t = state_id
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