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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * CNRS-Ecole Polytechnique-INRIA Futurs-Universite Paris Sud *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(* Certification of Imperative Programs / Jean-Christophe Fillitre *)
(* $Id: peffect.mli,v 1.1.16.1 2004/07/16 19:30:01 herbelin Exp $ *)
open Names
(* The abstract type of effects *)
type t
val bottom : t
val add_read : identifier -> t -> t
val add_write : identifier -> t -> t
val get_reads : t -> identifier list
val get_writes : t -> identifier list
val get_repr : t -> (identifier list) * (identifier list)
val is_read : t -> identifier -> bool (* read-only *)
val is_write : t -> identifier -> bool (* read-write *)
val compose : t -> t -> t
val union : t -> t -> t
val disj : t -> t -> t
val remove : t -> identifier -> t
val subst : (identifier * identifier) list -> t -> t
val pp : t -> Pp.std_ppcmds
val ppr : t -> unit
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