From 876f202985d5bd463bd5b44c195b239bcfedad7c Mon Sep 17 00:00:00 2001
From: Pierre-Marie Pédrot
Date: Thu, 7 Aug 2014 01:43:37 +0200
Subject: Removing simple induction / destruct from the AST.

---
 tactics/coretactics.ml4 | 10 ++++++++++
 tactics/tacintern.ml    |  2 --
 tactics/tacinterp.ml    |  3 ---
 tactics/tacsubst.ml     |  1 -
 4 files changed, 10 insertions(+), 6 deletions(-)

(limited to 'tactics')

diff --git a/tactics/coretactics.ml4 b/tactics/coretactics.ml4
index 1965072743..179d3622f2 100644
--- a/tactics/coretactics.ml4
+++ b/tactics/coretactics.ml4
@@ -175,3 +175,13 @@ END
 TACTIC EXTEND intros_until
   [ "intros" "until" quantified_hypothesis(h) ] -> [ Tactics.intros_until h ]
 END
+
+(** Simple induction / destruct *)
+
+TACTIC EXTEND simple_induction
+  [ "simple" "induction" quantified_hypothesis(h) ] -> [ Tactics.simple_induct h ]
+END
+
+TACTIC EXTEND simple_destruct
+  [ "simple" "destruct" quantified_hypothesis(h) ] -> [ Tactics.simple_destruct h ]
+END
diff --git a/tactics/tacintern.ml b/tactics/tacintern.ml
index 6c9e202895..04fd28b309 100644
--- a/tactics/tacintern.ml
+++ b/tactics/tacintern.ml
@@ -495,8 +495,6 @@ let rec intern_atomic lf ist x =
         List.map (intern_constr ist) lems,l)
 
   (* Derived basic tactics *)
-  | TacSimpleInductionDestruct (isrec,h) ->
-      TacSimpleInductionDestruct (isrec,intern_quantified_hypothesis ist h)
   | TacInductionDestruct (ev,isrec,(l,el,cls)) ->
       TacInductionDestruct (ev,isrec,(List.map (fun (c,(ipato,ipats)) ->
 	      (intern_induction_arg ist c,
diff --git a/tactics/tacinterp.ml b/tactics/tacinterp.ml
index 2bb8ab8406..4372f87a4b 100644
--- a/tactics/tacinterp.ml
+++ b/tactics/tacinterp.ml
@@ -1688,9 +1688,6 @@ and interp_atomic ist tac : unit Proofview.tactic =
       end
 
   (* Derived basic tactics *)
-  | TacSimpleInductionDestruct (isrec,h) ->
-      let h = interp_quantified_hypothesis ist h in
-      if isrec then Tactics.simple_induct h else Tactics.simple_destruct h
   | TacInductionDestruct (isrec,ev,(l,el,cls)) ->
       (* spiwack: some unknown part of destruct needs the goal to be
          prenormalised. *)
diff --git a/tactics/tacsubst.ml b/tactics/tacsubst.ml
index d8ff931d39..93c6edfe65 100644
--- a/tactics/tacsubst.ml
+++ b/tactics/tacsubst.ml
@@ -162,7 +162,6 @@ let rec subst_atomic subst (t:glob_atomic_tactic_expr) = match t with
   | TacAuto (d,n,lems,l) -> TacAuto (d,n,List.map (subst_glob_constr subst) lems,l)
 
   (* Derived basic tactics *)
-  | TacSimpleInductionDestruct (isrec,h) as x -> x
   | TacInductionDestruct (isrec,ev,(l,el,cls)) ->
       let l' = List.map (fun (c,ids) -> subst_induction_arg subst c, ids) l in
       let el' = Option.map (subst_glob_with_bindings subst) el in
-- 
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