From 9043add656177eeac1491a73d2f3ab92bec0013c Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@debian.org>
Date: Sat, 29 Dec 2018 14:31:27 -0500
Subject: Imported Upstream version 8.8.2

---
 tactics/equality.mli | 41 +++++++++++++++++++++++++++--------------
 1 file changed, 27 insertions(+), 14 deletions(-)

(limited to 'tactics/equality.mli')

diff --git a/tactics/equality.mli b/tactics/equality.mli
index 47cb6b82..c0be917a 100644
--- a/tactics/equality.mli
+++ b/tactics/equality.mli
@@ -1,20 +1,22 @@
 (************************************************************************)
-(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016     *)
+(*         *   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        *)
+(*    //   *    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)         *)
 (************************************************************************)
 
 (*i*)
 open Names
-open Term
 open Evd
+open EConstr
 open Environ
-open Tacexpr
 open Ind_tables
 open Locus
 open Misctypes
+open Tactypes
 (*i*)
 
 type dep_proof_flag = bool (* true = support rewriting dependent proofs *)
@@ -67,23 +69,31 @@ val replace_in_clause_maybe_by : constr -> constr -> clause -> unit Proofview.ta
 val replace    : constr -> constr -> unit Proofview.tactic
 val replace_by : constr -> constr -> unit Proofview.tactic -> unit Proofview.tactic
 
+type inj_flags = {
+    keep_proof_equalities : bool; (* One may want it or not *)
+    injection_in_context : bool;  (* For regularity; one may want it from ML code but not interactively *)
+    injection_pattern_l2r_order : bool; (* Compatibility option: no reason not to want it *)
+  }
+
 val discr        : evars_flag -> constr with_bindings -> unit Proofview.tactic
 val discrConcl   : unit Proofview.tactic
 val discrHyp     : Id.t -> unit Proofview.tactic
 val discrEverywhere : evars_flag -> unit Proofview.tactic
 val discr_tac    : evars_flag ->
   constr with_bindings destruction_arg option -> unit Proofview.tactic
-val inj          : intro_patterns option -> evars_flag ->
+
+(* Below, if flag is [None], it takes the value from the dynamic value of the option *)
+val inj          : inj_flags option -> intro_patterns option -> evars_flag ->
   clear_flag -> constr with_bindings -> unit Proofview.tactic
-val injClause    : intro_patterns option -> evars_flag ->
+val injClause    : inj_flags option -> intro_patterns option -> evars_flag ->
   constr with_bindings destruction_arg option -> unit Proofview.tactic
-val injHyp       : clear_flag -> Id.t -> unit Proofview.tactic
-val injConcl     : unit Proofview.tactic
-val simpleInjClause : evars_flag ->
+val injHyp       : inj_flags option -> clear_flag -> Id.t -> unit Proofview.tactic
+val injConcl     : inj_flags option -> unit Proofview.tactic
+val simpleInjClause : inj_flags option -> evars_flag ->
   constr with_bindings destruction_arg option -> unit Proofview.tactic
 
-val dEq : evars_flag -> constr with_bindings destruction_arg option -> unit Proofview.tactic
-val dEqThen : evars_flag -> (clear_flag -> constr -> int -> unit Proofview.tactic) -> constr with_bindings destruction_arg option -> unit Proofview.tactic
+val dEq : keep_proofs:(bool option) -> evars_flag -> constr with_bindings destruction_arg option -> unit Proofview.tactic
+val dEqThen : keep_proofs:(bool option) -> evars_flag -> (clear_flag -> constr -> int -> unit Proofview.tactic) -> constr with_bindings destruction_arg option -> unit Proofview.tactic
 
 val make_iterated_tuple :
   env -> evar_map -> constr -> (constr * types) -> evar_map * (constr * constr * constr)
@@ -96,8 +106,11 @@ val cutRewriteInConcl : bool -> constr -> unit Proofview.tactic
 val rewriteInHyp : bool -> constr -> Id.t -> unit Proofview.tactic
 val rewriteInConcl : bool -> constr -> unit Proofview.tactic
 
+(* Tells if tactic "discriminate" is applicable *)
 val discriminable : env -> evar_map -> constr -> constr -> bool
-val injectable : env -> evar_map -> constr -> constr -> bool
+
+(* Tells if tactic "injection" is applicable *)
+val injectable : env -> evar_map -> keep_proofs:(bool option) -> constr -> constr -> bool
 
 (* Subst *)
 
-- 
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