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(************************************************************************)
(* * The Coq Proof Assistant / The Coq Development Team *)
(* v * INRIA, CNRS and contributors - Copyright 1999-2019 *)
(* <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) *)
(************************************************************************)
(** {6 States of the system} *)
(** In that module, we provide functions to get
and set the state of the whole system. Internally, it is done by
freezing the states of both [Lib] and [Summary]. We provide functions
to write and restore state to and from a given file. *)
type state
val freeze : marshallable:bool -> state
val unfreeze : state -> unit
val summary_of_state : state -> Summary.frozen
val lib_of_state : state -> Lib.frozen
val replace_summary : state -> Summary.frozen -> state
val replace_lib : state -> Lib.frozen -> state
(** {6 Rollback } *)
(** [with_state_protection f x] applies [f] to [x] and restores the
state of the whole system as it was before applying [f] *)
val with_state_protection : ('a -> 'b) -> 'a -> 'b
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