1 files changed, 43 insertions, 0 deletions
diff --git a/kernel/conv_oracle.ml b/kernel/conv_oracle.ml
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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: conv_oracle.ml,v 1.2.8.2 2004/07/16 19:30:24 herbelin Exp $ *)
+
+open Names
+open Closure
+
+(* Opaque constants *)
+let cst_transp = ref KNpred.full
+
+let set_opaque_const kn = cst_transp := KNpred.remove kn !cst_transp
+let set_transparent_const kn = cst_transp := KNpred.add kn !cst_transp
+
+let is_opaque_cst kn = not (KNpred.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
+  | FarRelKey _ -> 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 *)
+
+let init() = (cst_transp := KNpred.full; var_transp := Idpred.full)
+let freeze () = (!var_transp, !cst_transp)
+let unfreeze (vo,co) = (cst_transp := co; var_transp := vo)