From 9ebf44d84754adc5b64fcf612c6816c02c80462d Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@debian.org>
Date: Sat, 2 Feb 2019 19:29:23 -0500
Subject: Imported Upstream version 8.9.0

---
 plugins/omega/g_omega.mlg | 59 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 59 insertions(+)
 create mode 100644 plugins/omega/g_omega.mlg

(limited to 'plugins/omega/g_omega.mlg')

diff --git a/plugins/omega/g_omega.mlg b/plugins/omega/g_omega.mlg
new file mode 100644
index 00000000..c3d063cf
--- /dev/null
+++ b/plugins/omega/g_omega.mlg
@@ -0,0 +1,59 @@
+(************************************************************************)
+(*         *   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)         *)
+(************************************************************************)
+(**************************************************************************)
+(*                                                                        *)
+(* Omega: a solver of quantifier-free problems in Presburger Arithmetic   *)
+(*                                                                        *)
+(* Pierre Crégut (CNET, Lannion, France)                                  *)
+(*                                                                        *)
+(**************************************************************************)
+
+
+DECLARE PLUGIN "omega_plugin"
+
+{
+
+open Ltac_plugin
+open Names
+open Coq_omega
+open Stdarg
+
+let eval_tactic name =
+  let dp = DirPath.make (List.map Id.of_string ["PreOmega"; "omega"; "Coq"]) in
+  let kn = KerName.make2 (ModPath.MPfile dp) (Label.make name) in
+  let tac = Tacenv.interp_ltac kn in
+  Tacinterp.eval_tactic tac
+
+let omega_tactic l =
+  let tacs = List.map
+    (function
+       | "nat" -> eval_tactic "zify_nat"
+       | "positive" -> eval_tactic "zify_positive"
+       | "N" -> eval_tactic "zify_N"
+       | "Z" -> eval_tactic "zify_op"
+       | s -> CErrors.user_err Pp.(str ("No Omega knowledge base for type "^s)))
+    (Util.List.sort_uniquize String.compare l)
+  in
+  Tacticals.New.tclTHEN
+    (Tacticals.New.tclREPEAT (Tacticals.New.tclTHENLIST tacs))
+    (omega_solver)
+
+}
+
+TACTIC EXTEND omega
+|  [ "omega" ] -> { omega_tactic [] }
+END
+
+TACTIC EXTEND omega'
+| [ "omega" "with" ne_ident_list(l) ] ->
+    { omega_tactic (List.map Names.Id.to_string l) }
+| [ "omega" "with" "*" ] -> { omega_tactic ["nat";"positive";"N";"Z"] }
+END
+
-- 
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