A few other tactics made available to matita.

A few tactics (change, fold, replace) generalized to patterns.
The argument of clear and clearbody is now an identifier.

diff --git a/helm/matita/matitaEngine.ml b/helm/matita/matitaEngine.ml
index 89d168af36acb80efefc91b890005e161d6f9de3..37c96ce4e70f6e14a5613ee74e3daea1d837fa5d 100644 (file)
--- a/helm/matita/matitaEngine.ml
+++ b/helm/matita/matitaEngine.ml
@@ -26,6 +26,8 @@ let tactic_of_ast = function
   | TacticAst.Auto (_,depth,width) -> 
       AutoTactic.auto_tac ?depth ?width ~dbd:(MatitaDb.instance ()) ()
   | TacticAst.Change (_, what, with_what, _) -> Tactics.change ~what ~with_what
+  | TacticAst.Clear (_,id) -> Tactics.clear id
+  | TacticAst.ClearBody (_,id) -> Tactics.clearbody id
   | TacticAst.Contradiction _ -> Tactics.contradiction
   | TacticAst.Compare (_, term) -> Tactics.compare term
   | TacticAst.Constructor (_, n) -> Tactics.constructor n
@@ -40,7 +42,8 @@ let tactic_of_ast = function
   | TacticAst.ElimType (_, term) -> Tactics.elim_type term
   | TacticAst.Exact (_, term) -> Tactics.exact term
   | TacticAst.Exists _ -> Tactics.exists
-  | TacticAst.Fold (_, reduction_kind ,term) ->
+  | TacticAst.Fail _ -> Tactics.fail
+  | TacticAst.Fold (_, reduction_kind ,term, pattern) ->
      let reduction =
       match reduction_kind with
        | `Normalize -> CicReduction.normalize ~delta:false ~subst:[]
@@ -48,7 +51,7 @@ let tactic_of_ast = function
        | `Simpl -> ProofEngineReduction.simpl
        | `Whd -> CicReduction.whd ~delta:false ~subst:[]
      in
-      Tactics.fold ~reduction ~also_in_hypotheses:false ~term
+      Tactics.fold ~reduction ~pattern ~term
   | TacticAst.Fourier _ -> Tactics.fourier
   | TacticAst.FwdSimpl (_, term) -> 
      Tactics.fwd_simpl ~what:term ~dbd:(MatitaDb.instance ())
@@ -56,6 +59,7 @@ let tactic_of_ast = function
      let names = match ident with None -> [] | Some id -> [id] in
      Tactics.generalize ~term ~mk_fresh_name_callback:(namer_of names) pat
   | TacticAst.Goal (_, n) -> Tactics.set_goal n
+  | TacticAst.IdTac _ -> Tactics.id
   | TacticAst.Injection (_,term) -> Tactics.injection term
   | TacticAst.Intros (_, None, names) ->
       PrimitiveTactics.intros_tac ~mk_fresh_name_callback:(namer_of names) ()
@@ -74,7 +78,8 @@ let tactic_of_ast = function
       | `Simpl -> Tactics.simpl ~pattern 
       | `Whd -> Tactics.whd ~pattern)
   | TacticAst.Reflexivity _ -> Tactics.reflexivity
-  | TacticAst.Replace (_, what, with_what) -> Tactics.replace ~what ~with_what
+  | TacticAst.Replace (_, pattern, with_what) ->
+     Tactics.replace ~pattern ~with_what
   | TacticAst.Rewrite (_, dir, t, pattern) ->
       if dir = `Left then
         EqualityTactics.rewrite_tac ~where:pattern ~term:t ()
@@ -104,10 +109,8 @@ let eval_tactical status tac =
   in
   let rec tactical_of_ast = function
     | TacticAst.Tactic (loc, tactic) -> tactic_of_ast tactic
-    | TacticAst.Fail loc -> Tacticals.fail
     | TacticAst.Do (loc, num, tactical) ->
         Tacticals.do_tactic num (tactical_of_ast tactical)
-    | TacticAst.IdTac loc -> Tacticals.id_tac
     | TacticAst.Repeat (loc, tactical) ->
         Tacticals.repeat_tactic (tactical_of_ast tactical)
     | TacticAst.Seq (loc, tacticals) ->  (* tac1; tac2; ... *)
@@ -391,6 +394,8 @@ let disambiguate_tactic status = function
       let status, cic2 = disambiguate_term status with_what in
       let pattern = disambiguate_pattern status.aliases pattern in
       status, TacticAst.Change (loc, cic1, cic2, pattern)
+  | TacticAst.Clear (loc,id) -> status,TacticAst.Clear (loc,id)
+  | TacticAst.ClearBody (loc,id) -> status,TacticAst.ClearBody (loc,id)
   | TacticAst.Compare (loc,term) ->
       let status, term = disambiguate_term status term in
       status, TacticAst.Compare (loc,term)
@@ -423,9 +428,11 @@ let disambiguate_tactic status = function
       let status, cic = disambiguate_term status term in
       status, TacticAst.ElimType (loc, cic)
   | TacticAst.Exists loc -> status, TacticAst.Exists loc 
-  | TacticAst.Fold (loc,reduction_kind, term) ->
+  | TacticAst.Fail loc -> status,TacticAst.Fail loc
+  | TacticAst.Fold (loc,reduction_kind, term, pattern) ->
      let status, term = disambiguate_term status term in
-     status, TacticAst.Fold (loc,reduction_kind, term)
+     let pattern = disambiguate_pattern status.aliases pattern in
+     status, TacticAst.Fold (loc,reduction_kind, term, pattern)
   | TacticAst.FwdSimpl (loc, term) ->
      let status, term = disambiguate_term status term in
      status, TacticAst.FwdSimpl (loc, term)  
@@ -435,6 +442,7 @@ let disambiguate_tactic status = function
       let pattern = disambiguate_pattern status.aliases pattern in
       status, TacticAst.Generalize(loc,term,ident,pattern)
   | TacticAst.Goal (loc, g) -> status, TacticAst.Goal (loc, g)
+  | TacticAst.IdTac loc -> status,TacticAst.IdTac loc
   | TacticAst.Injection (loc,term) ->
       let status, term = disambiguate_term status term in
       status, TacticAst.Injection (loc,term)
@@ -458,10 +466,10 @@ let disambiguate_tactic status = function
       let pattern = disambiguate_pattern status.aliases pattern in
       status, TacticAst.Reduce(loc, reduction_kind, pattern)
   | TacticAst.Reflexivity loc -> status, TacticAst.Reflexivity loc
-  | TacticAst.Replace (loc, what, with_what) -> 
-      let status, cic1 = disambiguate_term status what in
-      let status, cic2 = disambiguate_term status with_what in
-      status, TacticAst.Replace (loc, cic1, cic2)
+  | TacticAst.Replace (loc, pattern, with_what) -> 
+      let pattern = disambiguate_pattern status.aliases pattern in
+      let status, with_what = disambiguate_term status with_what in
+      status, TacticAst.Replace (loc, pattern, with_what)
   | TacticAst.Rewrite (loc, dir, t, pattern) ->
       let status, term = disambiguate_term status t in
       let pattern = disambiguate_pattern status.aliases pattern in
@@ -498,8 +506,6 @@ let rec disambiguate_tactical status = function
   | TacticAst.Try (loc, tactical) ->
       let status, tactical = disambiguate_tactical status tactical in
       status, TacticAst.Try (loc, tactical)
-  | (TacticAst.IdTac _ | TacticAst.Fail _) as tac ->
-      status, tac
 
 and disambiguate_tacticals status tacticals =
   let status, tacticals =