Imported Upstream version 8.8.2upstream/8.8.2

1 files changed, 26 insertions, 0 deletions

diff --git a/lib/cAst.ml b/lib/cAst.ml
new file mode 100644
index 00000000..e1da072d
--- /dev/null
+++ b/lib/cAst.ml
@@ -0,0 +1,26 @@
+(************************************************************************)
+(*         *   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)         *)
+(************************************************************************)
+
+(** The ast type contains generic metadata for AST nodes. *)
+type 'a t = {
+  v   : 'a;
+  loc : Loc.t option;
+}
+
+let make ?loc v = { v; loc }
+
+let map f n = { n with v = f n.v }
+let map_with_loc f n = { n with v = f ?loc:n.loc n.v }
+let map_from_loc f l =
+  let loc, v = l in
+  { v = f ?loc v ; loc }
+
+let with_val f n = f n.v
+let with_loc_val f n = f ?loc:n.loc n.v