X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;f=helm%2Fsoftware%2Fcomponents%2Ftactics%2Fparamodulation%2Fequality.ml;h=65593985108f1e42d177074fb2c70957fe9cf6f1;hb=2b635ef37ea18619199fbadcdab61fc9184995dd;hp=cfef9452f0a3094c4283c1392f6dfc98495849c1;hpb=041ad23b567b9844ec187ad436595868441802f4;p=helm.git diff --git a/helm/software/components/tactics/paramodulation/equality.ml b/helm/software/components/tactics/paramodulation/equality.ml index cfef9452f..655939851 100644 --- a/helm/software/components/tactics/paramodulation/equality.ml +++ b/helm/software/components/tactics/paramodulation/equality.ml @@ -46,6 +46,7 @@ and proof = (* subst, (rule,eq1, eq2,predicate) *) and goal_proof = (rule * Utils.pos * int * Subst.substitution * Cic.term) list ;; +(* the hashtbl eq_id -> proof, max_eq_id *) type equality_bag = (int,equality) Hashtbl.t * int ref type goal = goal_proof * Cic.metasenv * Cic.term @@ -95,8 +96,8 @@ let string_of_equality ?env eq = id w (CicPp.ppterm ty) (CicPp.ppterm left) (Utils.string_of_comparison o) (CicPp.ppterm right) - (String.concat ", " (List.map (fun (i,_,_) -> string_of_int i) m)) -(* "..." *) +(* (String.concat ", " (List.map (fun (i,_,_) -> string_of_int i) m)) *) + "..." | Some (_, context, _) -> let names = Utils.names_of_context context in let w, _, (ty, left, right, o), m , id = open_equality eq in @@ -224,7 +225,8 @@ let mk_trans uri ty t1 t2 t3 p12 p23 = ;; let mk_eq_ind uri ty what pred p1 other p2 = - Cic.Appl [Cic.Const (uri, []); ty; what; pred; p1; other; p2] + let ens, args = build_ens uri [ty; what; pred; p1; other; p2] in + Cic.Appl (Cic.Const (uri, ens) :: args) ;; let p_of_sym ens tl = @@ -266,34 +268,6 @@ let is_not_fixed t = CicSubstitution.subst (Cic.Rel 1) t ;; -let head_of_apply = function | Cic.Appl (hd::_) -> hd | t -> t;; -let tail_of_apply = function | Cic.Appl (_::tl) -> tl | t -> [];; -let count_args t = List.length (tail_of_apply t);; -let rec build_nat = - let u = UriManager.uri_of_string "cic:/matita/nat/nat/nat.ind" in - function - | 0 -> Cic.MutConstruct(u,0,1,[]) - | n -> - Cic.Appl [Cic.MutConstruct(u,0,2,[]);build_nat (n-1)] -;; -let tyof context menv t = - try - fst(CicTypeChecker.type_of_aux' menv context t CicUniv.empty_ugraph) - with - | CicTypeChecker.TypeCheckerFailure _ - | CicTypeChecker.AssertFailure _ -> assert false -;; -let rec lambdaof left context = function - | Cic.Prod (n,s,t) -> - Cic.Lambda (n,s,lambdaof left context t) - | Cic.Appl [Cic.MutInd (uri, 0,_);ty;l;r] - when LibraryObjects.is_eq_URI uri -> if left then l else r - | t -> - let names = Utils.names_of_context context in - prerr_endline ("lambdaof: " ^ (CicPp.pp t names)); - assert false -;; - let canonical t context menv = let rec remove_refl t = match t with @@ -334,54 +308,6 @@ let canonical t context menv = Cic.Const (LibraryObjects.eq_f_sym_URI ~eq, []) in Cic.Appl (([eq_f_sym;ty1;ty2;f;x;y;p])) - -(* - let sym_eq = Cic.Const(uri_sym,ens) in - let eq_f = Cic.Const(uri_feq,[]) in - let b = Cic.MutConstruct (UriManager.uri_of_string - "cic:/matita/datatypes/bool/bool.ind",0,1,[]) - in - let u = ty1 in - let ctx = f in - let n = build_nat (count_args p) in - let h = head_of_apply p in - let predl = lambdaof true context (tyof context menv h) in - let predr = lambdaof false context (tyof context menv h) in - let args = tail_of_apply p in - let appl = - Cic.Appl - ([Cic.Const(UriManager.uri_of_string - "cic:/matita/paramodulation/rewrite.con",[]); - eq; sym_eq; eq_f; b; u; ctx; n; predl; predr; h] @ - args) - in - appl -*) -(* - | Cic.Appl (((Cic.Const(uri_ind,ens)) as he)::tl) - when LibraryObjects.is_eq_ind_URI uri_ind || - LibraryObjects.is_eq_ind_r_URI uri_ind -> - let ty, what, pred, p1, other, p2 = - match tl with - | [ty;what;pred;p1;other;p2] -> ty, what, pred, p1, other, p2 - | _ -> assert false - in - let pred,l,r = - match pred with - | Cic.Lambda (name,s,Cic.Appl [Cic.MutInd(uri,0,ens);ty;l;r]) - when LibraryObjects.is_eq_URI uri -> - Cic.Lambda - (name,s,Cic.Appl [Cic.MutInd(uri,0,ens);ty;r;l]),l,r - | _ -> - prerr_endline (CicPp.ppterm pred); - assert false - in - let l = CicSubstitution.subst what l in - let r = CicSubstitution.subst what r in - Cic.Appl - [he;ty;what;pred; - canonical (mk_sym uri_sym ty l r p1);other;canonical p2] -*) | Cic.Appl [Cic.MutConstruct (uri, 0, 1,_);_;_] as t when LibraryObjects.is_eq_URI uri -> t | _ -> Cic.Appl (List.map (canonical context) args)) @@ -391,11 +317,6 @@ let canonical t context menv = remove_refl (canonical context t) ;; -let ty_of_lambda = function - | Cic.Lambda (_,ty,_) -> ty - | _ -> assert false -;; - let compose_contexts ctx1 ctx2 = ProofEngineReduction.replace_lifting ~equality:(=) ~what:[Cic.Implicit(Some `Hole)] ~with_what:[ctx2] ~where:ctx1 @@ -407,11 +328,13 @@ let put_in_ctx ctx t = ;; let mk_eq uri ty l r = - Cic.Appl [Cic.MutInd(uri,0,[]);ty;l;r] + let ens, args = build_ens uri [ty; l; r] in + Cic.Appl (Cic.MutInd(uri,0,ens) :: args) ;; let mk_refl uri ty t = - Cic.Appl [Cic.MutConstruct(uri,0,1,[]);ty;t] + let ens, args = build_ens uri [ty; t] in + Cic.Appl (Cic.MutConstruct(uri,0,1,ens) :: args) ;; let open_eq = function @@ -421,7 +344,8 @@ let open_eq = function ;; let mk_feq uri_feq ty ty1 left pred right t = - Cic.Appl [Cic.Const(uri_feq,[]);ty;ty1;pred;left;right;t] + let ens, args = build_ens uri_feq [ty;ty1;pred;left;right;t] in + Cic.Appl (Cic.Const(uri_feq,ens) :: args) ;; let rec look_ahead aux = function @@ -934,10 +858,11 @@ exception NotMetaConvertible;; let meta_convertibility_aux table t1 t2 = let module C = Cic in - let rec aux ((table_l, table_r) as table) t1 t2 = + let rec aux ((table_l,table_r) as table) t1 t2 = match t1, t2 with + | C.Meta (m1, tl1), C.Meta (m2, tl2) when m1 = m2 -> table + | C.Meta (m1, tl1), C.Meta (m2, tl2) when m1 < m2 -> aux table t2 t1 | C.Meta (m1, tl1), C.Meta (m2, tl2) -> - let tl1, tl2 = [],[] in let m1_binding, table_l = try List.assoc m1 table_l, table_l with Not_found -> m2, (m1, m2)::table_l @@ -947,18 +872,7 @@ let meta_convertibility_aux table t1 t2 = in if (m1_binding <> m2) || (m2_binding <> m1) then raise NotMetaConvertible - else ( - try - List.fold_left2 - (fun res t1 t2 -> - match t1, t2 with - | None, Some _ | Some _, None -> raise NotMetaConvertible - | None, None -> res - | Some t1, Some t2 -> (aux res t1 t2)) - (table_l, table_r) tl1 tl2 - with Invalid_argument _ -> - raise NotMetaConvertible - ) + else table_l,table_r | C.Var (u1, ens1), C.Var (u2, ens2) | C.Const (u1, ens1), C.Const (u2, ens2) when (UriManager.eq u1 u2) -> aux_ens table ens1 ens2 @@ -1034,12 +948,12 @@ let meta_convertibility_eq eq1 eq2 = true else try - let table = meta_convertibility_aux ([], []) left left' in + let table = meta_convertibility_aux ([],[]) left left' in let _ = meta_convertibility_aux table right right' in true with NotMetaConvertible -> try - let table = meta_convertibility_aux ([], []) left right' in + let table = meta_convertibility_aux ([],[]) left right' in let _ = meta_convertibility_aux table right left' in true with NotMetaConvertible -> @@ -1052,7 +966,7 @@ let meta_convertibility t1 t2 = true else try - ignore(meta_convertibility_aux ([], []) t1 t2); + ignore(meta_convertibility_aux ([],[]) t1 t2); true with NotMetaConvertible -> false @@ -1082,13 +996,13 @@ let equality_of_term bag proof term = let is_weak_identity eq = let _,_,(_,left, right,_),_,_ = open_equality eq in - left = right || meta_convertibility left right + left = right + (* doing metaconv here is meaningless *) ;; let is_identity (_, context, ugraph) eq = let _,_,(ty,left,right,_),menv,_ = open_equality eq in - left = right || - (* (meta_convertibility left right)) *) + (* doing metaconv here is meaningless *) fst (CicReduction.are_convertible ~metasenv:menv context left right ugraph) ;;