X-Git-Url: http://matita.cs.unibo.it/gitweb/?p=helm.git;a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2Ftacticals.ml;fp=helm%2Focaml%2Ftactics%2Ftacticals.ml;h=0000000000000000000000000000000000000000;hp=8d4eb891e049a8e0601daabf7d8289898f20bf02;hb=1696761e4b8576e8ed81caa905fd108717019226;hpb=5325734bc2e4927ed7ec146e35a6f0f2b49f50c1

diff --git a/helm/ocaml/tactics/tacticals.ml b/helm/ocaml/tactics/tacticals.ml
deleted file mode 100644
index 8d4eb891e..000000000
--- a/helm/ocaml/tactics/tacticals.ml
+++ /dev/null
@@ -1,249 +0,0 @@
-(* Copyright (C) 2002, HELM Team.
- * 
- * This file is part of HELM, an Hypertextual, Electronic
- * Library of Mathematics, developed at the Computer Science
- * Department, University of Bologna, Italy.
- * 
- * HELM is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- * 
- * HELM is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with HELM; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA  02111-1307, USA.
- * 
- * For details, see the HELM World-Wide-Web page,
- * http://cs.unibo.it/helm/.
- *)
-
-open CicReduction
-open ProofEngineTypes
-open UriManager
-
-(** DEBUGGING *)
-
-  (** perform debugging output? *)
-let debug = false
-
-  (** debugging print *)
-let warn s =
-  if debug then
-    prerr_endline ("TACTICALS WARNING: " ^ s)
-
-
-(** TACTIC{,AL}S *)
-
-  (* not a tactical, but it's used only here (?) *)
-
-let id_tac (proof,goal) = (proof,[goal])
-
-
-  (**
-    naive implementation of ORELSE tactical, try a sequence of tactics in turn:
-    if one fails pass to the next one and so on, eventually raises (failure "no
-    tactics left")
-    TODO warning: not tail recursive due to "try .. with" boxing
-
-    Galla: is this exactly Coq's "First"?
-
-  *)
-let rec try_tactics ~(tactics: (string * tactic) list) status =
-  warn "in Tacticals.try_tactics";
-  match tactics with
-  | (descr, tac)::tactics ->
-      warn ("Tacticals.try_tactics IS TRYING " ^ descr);
-      (try
-        let res = tac status in
-        warn ("Tacticals.try_tactics: " ^ descr ^ " succedeed!!!");
-        res
-       with
-        e ->
-         match e with
-            (Fail _)
-          | (CicTypeChecker.TypeCheckerFailure _)
-          | (CicUnification.UnificationFailure _) ->
-              warn (
-                "Tacticals.try_tactics failed with exn: " ^
-                Printexc.to_string e);
-              try_tactics ~tactics status
-        | _ -> raise e (* [e] must not be caught ; let's re-raise it *)
-      )
-  | [] -> raise (Fail "try_tactics: no tactics left")
-
-
-
-let thens ~start ~continuations status =
- let (proof,new_goals) = start status in
-  try
-   List.fold_left2
-    (fun (proof,goals) goal tactic ->
-      let (proof',new_goals') = tactic (proof,goal) in
-       (proof',goals@new_goals')
-    ) (proof,[]) new_goals continuations
-  with
-   Invalid_argument _ -> raise (Fail "thens: wrong number of new goals")
-
-
-
-let then_ ~start ~continuation status =
- let (proof,new_goals) = start status in
-  List.fold_left
-   (fun (proof,goals) goal ->
-     let (proof',new_goals') = continuation (proof,goal) in
-      (proof',goals@new_goals')
-   ) (proof,[]) new_goals
-
-
-(* Galla *)
-(* si suppone che tutte le tattiche sollevino solamente Fail? *)
-
-
-(* TODO: x debug: i due tatticali seguenti non contano quante volte hanno applicato la tattica *)
-
-(* This keep on appling tactic until it fails *)
-(* When <tactic> generates more than one goal, you have a tree of
-   application on the tactic, repeat_tactic works in depth on this tree *)
-
-let rec repeat_tactic ~tactic status =
-  warn "in repeat_tactic";
-  try let (proof, goallist) = tactic status in
-   let rec step proof goallist =
-    match goallist with
-       [] -> (proof, [])
-     | head::tail -> 
-        let (proof', goallist') = repeat_tactic ~tactic (proof, head) in
-         let (proof'', goallist'') = step proof' tail in
-          proof'', goallist'@goallist''
-   in
-    step proof goallist
-  with 
-   (Fail _) as e ->
-    warn ("Tacticals.repeat_tactic failed after nth time with exception: " ^ Printexc.to_string e) ;
-    id_tac status
-;;
-
-
-
-(* This tries to apply tactic n times *)
-
-let rec do_tactic ~n ~tactic status =
-  warn "in do_tactic";
-  try 
-   let (proof, goallist) = 
-    if (n>0) then tactic status 
-             else id_tac status in
-(*             else (proof, []) in *)(* perche' non va bene questo? stessa questione di ##### ? *)
-   let rec step proof goallist =
-    match goallist with
-       [] -> (proof, [])
-     | head::tail -> 
-        let (proof', goallist') = do_tactic ~n:(n-1) ~tactic (proof, head) in
-        let (proof'', goallist'') = step proof' tail in
-         proof'', goallist'@goallist''
-   in
-    step proof goallist
-  with 
-   (Fail _) as e ->
-    warn ("Tacticals.do_tactic failed after nth time with exception: " ^ Printexc.to_string e) ;
-    id_tac status
-;;
-
-
-
-(* This applies tactic and catches its possible failure *)
-
-let rec try_tactic ~tactic status =
-  warn "in Tacticals.try_tactic";
-  try
-   tactic status
-  with
-   (Fail _) as e -> 
-    warn ( "Tacticals.try_tactic failed with exn: " ^ Printexc.to_string e);
-    id_tac status
-;;
-
-
-(* This tries tactics until one of them doesn't _solve_ the goal *)
-(* TODO: si puo' unificare le 2(due) chiamate ricorsive? *)
-
-let rec solve_tactics ~(tactics: (string * tactic) list) status =
-  warn "in Tacticals.solve_tactics";
-  match tactics with
-  | (descr, currenttactic)::moretactics ->
-      warn ("Tacticals.solve_tactics is trying " ^ descr);
-      (try
-        let (proof, goallist) = currenttactic status in
-         match goallist with 
-            [] -> warn ("Tacticals.solve_tactics: " ^ descr ^ " solved the goal!!!");
-(* questo significa che non ci sono piu' goal, o che current_tactic non ne ha aperti di nuovi? (la 2a!) ##### *)
-(* nel secondo caso basta per dire che solve_tactics has solved the goal? (si!) *)
-                  (proof, goallist)
-          | _ -> warn ("Tacticals.solve_tactics: try the next tactic");
-                 solve_tactics ~tactics:(moretactics) status
-       with
-        (Fail _) as e ->
-         warn ("Tacticals.solve_tactics: current tactic failed with exn: " ^ Printexc.to_string e);
-         solve_tactics ~tactics status
-      )
-  | [] -> raise (Fail "solve_tactics cannot solve the goal");
-          id_tac status
-;;
-
-
-
-
-
-
-
-
-
-
-  (** tattica di prova per debuggare i tatticali *)
-(*
-let thens' ~start ~continuations status =
- let (proof,new_goals) = start status in
-  try
-   List.fold_left2
-    (fun (proof,goals) goal tactic ->
-      let (proof',new_goals') = tactic (proof,goal) in
-       (proof',goals@new_goals')
-    ) (proof,[]) new_goals continuations
-  with
-   Invalid_argument _ -> raise (Fail "thens: wrong number of new goals")
-
-let prova_tac =
- let apply_T_tac status =
-  let (proof, goal) = status in
-  let curi,metasenv,pbo,pty = proof in
-  let metano,context,gty = CicUtil.lookup_meta goal metasenv in
-   let rel =
-    let rec find n =
-     function
-        [] -> assert false
-      | (Some (Cic.Name name,_))::_ when name = "T" -> n
-      | _::tl -> find (n+1) tl
-    in
-     prerr_endline ("eseguo find");
-     find 1 context
-   in
-    prerr_endline ("eseguo apply");    
-    apply_tac ~term:(Cic.Rel rel) status
- in
-(*  do_tactic ~n:2 *)
-  repeat_tactic
-   ~tactic:
-    (then_
-      ~start:(intros_tac ~name:"pippo")
-      ~continuation:(thens' ~start:apply_T_tac ~continuations:[id_tac ; apply_tac ~term:(Cic.Rel 1)]))
-(* id_tac *)
-;;
-*)
-
-