X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Focaml%2Ftactics%2FautoTactic.ml;h=568e12ca40c4b303bd182ea3688efba78070ea0f;hb=12cc5b2b8e7f7bb0b5e315094b008a293a4df6b1;hp=c7cdc97acf202e72a46439e1434a1085f01602ef;hpb=9eee519f40a2cf6dfaaaa0c5e37d23ad8748552c;p=helm.git diff --git a/helm/ocaml/tactics/autoTactic.ml b/helm/ocaml/tactics/autoTactic.ml index c7cdc97ac..568e12ca4 100644 --- a/helm/ocaml/tactics/autoTactic.ml +++ b/helm/ocaml/tactics/autoTactic.ml @@ -23,7 +23,7 @@ * http://cs.unibo.it/helm/. *) - let debug_print = prerr_endline + let debug_print = ignore (*prerr_endline *) (* let debug_print = fun _ -> () *) @@ -32,137 +32,11 @@ let new_experimental_hint = fun ~dbd ~facts ?signature ~universe status -> profile (MetadataQuery.new_experimental_hint ~dbd ~facts ?signature ~universe) status -let search_theorems_in_context status = - let (proof, goal) = status in - let module C = Cic in - let module R = CicReduction in - let module S = CicSubstitution in - let module PET = ProofEngineTypes in - let module PT = PrimitiveTactics in - let _,metasenv,_,_ = proof in - let _,context,ty = CicUtil.lookup_meta goal metasenv in - let rec find n = function - [] -> [] - | hd::tl -> - let res = - try - Some (PET.apply_tactic - (PT.apply_tac ~term:(C.Rel n)) status ) - with - PET.Fail _ -> None in - (match res with - Some res -> res::(find (n+1) tl) - | None -> find (n+1) tl) - in - try - find 1 context - with Failure s -> - [] -;; - -let depth = 5;; -let width = 3;; - -let new_search_theorems f proof goal depth gtl sign = - let choices = f (proof,goal) - in - List.map - (function (proof, goallist) -> - (proof,(List.map (function g -> (g,depth)) goallist)@gtl, sign)) - choices -;; - -exception NoOtherChoices;; -let rec auto dbd = function - [] -> [] - | (proof, [], sign)::tl -> (proof, [], sign)::tl - | (proof, (goal,0)::_, _)::tl -> auto dbd tl - | (proof, (((goal,depth)::gtl) as allg), sign)::tl -> - (* first we check if the metavariable has not been already - closed as a side effect by some other application *) - let facts = (depth = 1) in - let name,metasenv,p,statement = proof in - let meta_inf = - (try - let (_, ey ,ty) = CicUtil.lookup_meta goal metasenv in - Some (ey, ty) - with _ -> None) in - match meta_inf with - Some (ey, ty) -> - (* the goal is still there *) - (* - debug_print ("CURRENT GOAL = " ^ CicPp.ppterm ty); - debug_print ("CURRENT PROOF = " ^ CicPp.ppterm p); - debug_print ("CURRENT HYP = " ^ CicPp.ppcontext ey); - *) - (* if the goal contains metavariables we use the input - signature for at_most constraints *) - let is_meta_closed = CicUtil.is_meta_closed ty in - let sign, new_sign = - if is_meta_closed then - None, Some (MetadataConstraints.signature_of ty) - else sign,sign in (* maybe the union ? *) - let local_choices = - new_search_theorems - search_theorems_in_context - proof goal (depth-1) [] new_sign in - let global_choices = - new_search_theorems - (fun status -> - List.map snd - (MetadataQuery.hint - ~dbd ~facts:facts ?signature:sign status)) - proof goal (depth-1) [] new_sign in - (* we proceed depth-first on the current goal. This is - a MAJOR optimization, since in case of success, and - if the goal is meta_closed, we may just drop the alternatives - tl1, avoiding useless backtracking. *) - let all_choices = - local_choices@global_choices in - (match (auto dbd all_choices) - with - [] -> auto dbd tl - | (proof,[],_)::tl1 -> - let all_choices = - let gtl' = List.map fst gtl in - if (gtl = [] || is_meta_closed) then - (proof,gtl,sign)::tl - else - let tl2 = - (List.map - (function (p,l,s) -> (p,l@gtl,s)) tl1) - in - (proof,gtl,sign)::tl2@tl in - auto dbd all_choices - | _ -> assert false) - | None -> auto dbd ((proof,gtl,sign)::tl) -;; - - -let auto_tac ?num dbd = - let auto_tac dbh (proof,goal) = - debug_print "Entro in Auto"; - match (auto dbd [(proof, [(goal,depth)],None)]) with - [] -> debug_print("Auto failed"); - raise (ProofEngineTypes.Fail "No Applicable theorem") - | (proof,[],_)::_ -> - debug_print "AUTO_TAC HA FINITO"; - (proof,[]) - | _ -> assert false - in - ProofEngineTypes.mk_tactic (auto_tac dbd) -;; - - -(************************** EXPERIMENTAL VERSION ****************************) - (* In this versions of auto_tac we maintain an hash table of all inspected goals. We assume that the context is invariant for application. To this aim, it is essential to sall hint_verbose, that in turns calls apply_verbose. *) - - type exitus = No of int | Yes of Cic.term * int @@ -180,27 +54,32 @@ let search_theorems_in_context status = let _,metasenv,_,_ = proof in let _,context,ty = CicUtil.lookup_meta goal metasenv in let rec find n = function - [] -> [] + | [] -> [] | hd::tl -> - let res = - try - let (subst,(proof, goal_list)) = - PT.apply_tac_verbose ~term:(C.Rel n) status in - (* - let goal_list = - List.stable_sort (compare_goal_list proof) goal_list in - *) - Some (subst,(proof, goal_list)) - with - PET.Fail _ -> None in - (match res with - Some res -> res::(find (n+1) tl) - | None -> find (n+1) tl) + let res = + (* we should check that the hypothesys has not been cleared *) + if List.nth context (n-1) = None then + None + else + try + let (subst,(proof, goal_list)) = + PT.apply_tac_verbose ~term:(C.Rel n) status + in + (* + let goal_list = + List.stable_sort (compare_goal_list proof) goal_list in + *) + Some (subst,(proof, goal_list)) + with + PET.Fail _ -> None + in + (match res with + | Some res -> res::(find (n+1) tl) + | None -> find (n+1) tl) in try find 1 context - with Failure s -> - [] + with Failure s -> [] ;; @@ -243,7 +122,7 @@ let is_in_metasenv goal metasenv = let (_, ey ,ty) = CicUtil.lookup_meta goal metasenv in true - with _ -> false + with CicUtil.Meta_not_found _ -> false let rec auto_single dbd proof goal ey ty depth width sign already_seen_goals universe @@ -349,21 +228,21 @@ let rec auto_single dbd proof goal ey ty depth width sign already_seen_goals end and auto_new dbd width already_seen_goals universe = function - [] -> [] + | [] -> [] | (subst,(proof, goals, sign))::tl -> let _,metasenv,_,_ = proof in let is_in_metasenv (goal, _) = - try - let (_, ey ,ty) = - CicUtil.lookup_meta goal metasenv in - true - with _ -> false in + try + let (_, ey ,ty) = CicUtil.lookup_meta goal metasenv in + true + with CicUtil.Meta_not_found _ -> false + in let goals'= List.filter is_in_metasenv goals in - auto_new_aux dbd width already_seen_goals universe - ((subst,(proof, goals', sign))::tl) + auto_new_aux dbd + width already_seen_goals universe ((subst,(proof, goals', sign))::tl) and auto_new_aux dbd width already_seen_goals universe = function - [] -> [] + | [] -> [] | (subst,(proof, [], sign))::tl -> (subst,(proof, [], sign))::tl | (subst,(proof, (goal,0)::_, _))::tl -> auto_new dbd width already_seen_goals universe tl @@ -396,7 +275,7 @@ and auto_new_aux dbd width already_seen_goals universe = function let default_depth = 5 let default_width = 3 -let auto_tac_new ?(depth=default_depth) ?(width=default_width) ~(dbd:Mysql.dbd) +let auto_tac ?(depth=default_depth) ?(width=default_width) ~(dbd:Mysql.dbd) () = let auto_tac dbd (proof,goal) =