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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(** {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. *)
val intern_state : string -> unit
val extern_state : string -> unit
type state
val freeze : marshallable:Summary.marshallable -> state
val unfreeze : state -> unit
(** {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
(** [with_state_protection_on_exception f x] applies [f] to [x] and restores the
state of the whole system as it was before applying [f] only if an
exception is raised. Unlike [with_state_protection] it also takes into
account the proof state *)
val with_state_protection_on_exception : ('a -> 'b) -> 'a -> 'b
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