Merge PR #7925: Clean transparent state

1 files changed, 45 insertions, 0 deletions

diff --git a/kernel/transparentState.ml b/kernel/transparentState.ml
new file mode 100644
index 0000000000..9661dace6a
--- /dev/null
+++ b/kernel/transparentState.ml
@@ -0,0 +1,45 @@
+(************************************************************************)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <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)         *)
+(************************************************************************)
+
+open Names
+
+type t = {
+  tr_var : Id.Pred.t;
+  tr_cst : Cpred.t;
+}
+
+let empty = {
+  tr_var = Id.Pred.empty;
+  tr_cst = Cpred.empty;
+}
+
+let full = {
+  tr_var = Id.Pred.full;
+  tr_cst = Cpred.full;
+}
+
+let var_full = {
+  tr_var = Id.Pred.full;
+  tr_cst = Cpred.empty;
+}
+
+let cst_full = {
+  tr_var = Id.Pred.empty;
+  tr_cst = Cpred.full;
+}
+
+let is_empty ts =
+  Id.Pred.is_empty ts.tr_var && Cpred.is_empty ts.tr_cst
+
+let is_transparent_variable ts id =
+  Id.Pred.mem id ts.tr_var
+
+let is_transparent_constant ts cst =
+  Cpred.mem cst ts.tr_cst