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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 *)
(************************************************************************)
(* $Id$ *)
open Names
(* Opaque constants *)
let cst_transp = ref Cpred.full
let set_opaque_const kn = cst_transp := Cpred.remove kn !cst_transp
let set_transparent_const kn = cst_transp := Cpred.add kn !cst_transp
let is_opaque_cst kn = not (Cpred.mem kn !cst_transp)
(* Opaque variables *)
let var_transp = ref Idpred.full
let set_opaque_var kn = var_transp := Idpred.remove kn !var_transp
let set_transparent_var kn = var_transp := Idpred.add kn !var_transp
let is_opaque_var kn = not (Idpred.mem kn !var_transp)
(* Opaque reference keys *)
let is_opaque = function
| ConstKey cst -> is_opaque_cst cst
| VarKey id -> is_opaque_var id
| RelKey _ -> false
(* Unfold the first only if it is not opaque and the second is opaque *)
let oracle_order k1 k2 = is_opaque k2 & not (is_opaque k1)
(* summary operations *)
type transparent_state = Idpred.t * Cpred.t
let init() = (cst_transp := Cpred.full; var_transp := Idpred.full)
let freeze () = (!var_transp, !cst_transp)
let unfreeze (vo,co) = (cst_transp := co; var_transp := vo)
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