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-rw-r--r--plugins/funind/g_indfun.ml4244
1 files changed, 0 insertions, 244 deletions
diff --git a/plugins/funind/g_indfun.ml4 b/plugins/funind/g_indfun.ml4
index 043d4328..045beb37 100644
--- a/plugins/funind/g_indfun.ml4
+++ b/plugins/funind/g_indfun.ml4
@@ -247,247 +247,3 @@ END
VERNAC COMMAND EXTEND GenerateGraph CLASSIFIED AS QUERY
["Generate" "graph" "for" reference(c)] -> [ make_graph (Smartlocate.global_with_alias c) ]
END
-
-
-
-
-
-(* FINDUCTION *)
-
-(* comment this line to see debug msgs *)
-let msg x = () ;; let pr_lconstr c = str ""
- (* uncomment this to see debugging *)
-let prconstr c = msg (str" " ++ Printer.pr_lconstr c ++ str"\n")
-let prlistconstr lc = List.iter prconstr lc
-let prstr s = msg(str s)
-let prNamedConstr s c =
- begin
- msg(str "");
- msg(str(s^"==>\n ") ++ Printer.pr_lconstr c ++ str "\n<==\n");
- msg(str "");
- end
-
-
-
-(** Information about an occurrence of a function call (application)
- inside a term. *)
-type fapp_info = {
- fname: constr; (** The function applied *)
- largs: constr list; (** List of arguments *)
- free: bool; (** [true] if all arguments are debruijn free *)
- max_rel: int; (** max debruijn index in the funcall *)
- onlyvars: bool (** [true] if all arguments are variables (and not debruijn) *)
-}
-
-
-(** [constr_head_match(a b c) a] returns true, false otherwise. *)
-let constr_head_match u t=
- if isApp u
- then
- let uhd,args= destApp u in
- Constr.equal uhd t
- else false
-
-(** [hdMatchSub inu t] returns the list of occurrences of [t] in
- [inu]. DeBruijn are not pushed, so some of them may be unbound in
- the result. *)
-let rec hdMatchSub inu (test: constr -> bool) : fapp_info list =
- let subres =
- match kind_of_term inu with
- | Lambda (nm,tp,cstr) | Prod (nm,tp,cstr) ->
- hdMatchSub tp test @ hdMatchSub (lift 1 cstr) test
- | Fix (_,(lna,tl,bl)) -> (* not sure Fix is correct *)
- Array.fold_left
- (fun acc cstr -> acc @ hdMatchSub (lift (Array.length tl) cstr) test)
- [] bl
- | _ -> (* Cofix will be wrong *)
- fold_constr
- (fun l cstr ->
- l @ hdMatchSub cstr test) [] inu in
- if not (test inu) then subres
- else
- let f,args = decompose_app inu in
- let freeset = Termops.free_rels inu in
- let max_rel = try Int.Set.max_elt freeset with Not_found -> -1 in
- {fname = f; largs = args; free = Int.Set.is_empty freeset;
- max_rel = max_rel; onlyvars = List.for_all isVar args }
- ::subres
-
-let make_eq () =
-(*FIXME*) Universes.constr_of_global (Coqlib.build_coq_eq ())
-
-let mkEq typ c1 c2 =
- mkApp (make_eq(),[| typ; c1; c2|])
-
-
-let poseq_unsafe idunsafe cstr gl =
- let typ = Tacmach.pf_type_of gl cstr in
- tclTHEN
- (Proofview.V82.of_tactic (Tactics.letin_tac None (Name idunsafe) cstr None Locusops.allHypsAndConcl))
- (tclTHENFIRST
- (Proofview.V82.of_tactic (Tactics.assert_before Anonymous (mkEq typ (mkVar idunsafe) cstr)))
- (Proofview.V82.of_tactic Tactics.reflexivity))
- gl
-
-
-let poseq id cstr gl =
- let x = Tactics.fresh_id [] id gl in
- poseq_unsafe x cstr gl
-
-(* dirty? *)
-
-let list_constr_largs = ref []
-
-let rec poseq_list_ids_rec lcstr gl =
- match lcstr with
- | [] -> tclIDTAC gl
- | c::lcstr' ->
- match kind_of_term c with
- | Var _ ->
- (list_constr_largs:=c::!list_constr_largs ; poseq_list_ids_rec lcstr' gl)
- | _ ->
- let _ = prstr "c = " in
- let _ = prconstr c in
- let _ = prstr "\n" in
- let typ = Tacmach.pf_type_of gl c in
- let cname = Namegen.id_of_name_using_hdchar (Global.env()) typ Anonymous in
- let x = Tactics.fresh_id [] cname gl in
- let _ = list_constr_largs:=mkVar x :: !list_constr_largs in
- let _ = prstr " list_constr_largs = " in
- let _ = prlistconstr !list_constr_largs in
- let _ = prstr "\n" in
-
- tclTHEN
- (poseq_unsafe x c)
- (poseq_list_ids_rec lcstr')
- gl
-
-let poseq_list_ids lcstr gl =
- let _ = list_constr_largs := [] in
- poseq_list_ids_rec lcstr gl
-
-(** [find_fapp test g] returns the list of [app_info] of all calls to
- functions that satisfy [test] in the conclusion of goal g. Trivial
- repetition (not modulo conversion) are deleted. *)
-let find_fapp (test:constr -> bool) g : fapp_info list =
- let pre_res = hdMatchSub (Tacmach.pf_concl g) test in
- let res =
- List.fold_right (List.add_set Pervasives.(=)) pre_res [] in
- (prlistconstr (List.map (fun x -> applist (x.fname,x.largs)) res);
- res)
-
-
-
-(** [finduction id filter g] tries to apply functional induction on
- an occurence of function [id] in the conclusion of goal [g]. If
- [id]=[None] then calls to any function are selected. In any case
- [heuristic] is used to select the most pertinent occurrence. *)
-let finduction (oid:Id.t option) (heuristic: fapp_info list -> fapp_info list)
- (nexttac:Proof_type.tactic) g =
- let test = match oid with
- | Some id ->
- let idref = const_of_id id in
- (* JF : FIXME : we probably need to keep trace of evd in presence of universe polymorphism *)
- let idconstr = snd (Evd.fresh_global (Global.env ()) Evd.empty idref) in
- (fun u -> constr_head_match u idconstr) (* select only id *)
- | None -> (fun u -> isApp u) in (* select calls to any function *)
- let info_list = find_fapp test g in
- let ordered_info_list = heuristic info_list in
- prlistconstr (List.map (fun x -> applist (x.fname,x.largs)) ordered_info_list);
- if List.is_empty ordered_info_list then Errors.error "function not found in goal\n";
- let taclist: Proof_type.tactic list =
- List.map
- (fun info ->
- (tclTHEN
- (tclTHEN (poseq_list_ids info.largs)
- (
- fun gl ->
- (functional_induction
- true (applist (info.fname, List.rev !list_constr_largs))
- None None) gl))
- nexttac)) ordered_info_list in
- (* we try each (f t u v) until one does not fail *)
- (* TODO: try also to mix functional schemes *)
- tclFIRST taclist g
-
-
-
-
-(** [chose_heuristic oi x] returns the heuristic for reordering
- (and/or forgetting some elts of) a list of occurrences of
- function calls infos to chose first with functional induction. *)
-let chose_heuristic (oi:int option) : fapp_info list -> fapp_info list =
- match oi with
- | Some i -> (fun l -> [ List.nth l (i-1) ]) (* occurrence was given by the user *)
- | None ->
- (* Default heuristic: put first occurrences where all arguments
- are *bound* (meaning already introduced) variables *)
- let ordering x y =
- if x.free && x.onlyvars && y.free && y.onlyvars then 0 (* both pertinent *)
- else if x.free && x.onlyvars then -1
- else if y.free && y.onlyvars then 1
- else 0 (* both not pertinent *)
- in
- List.sort ordering
-
-
-
-TACTIC EXTEND finduction
- ["finduction" ident(id) natural_opt(oi)] ->
- [
- match oi with
- | Some(n) when n<=0 -> Errors.error "numerical argument must be > 0"
- | _ ->
- let heuristic = chose_heuristic oi in
- Proofview.V82.tactic (finduction (Some id) heuristic tclIDTAC)
- ]
-END
-
-
-
-TACTIC EXTEND fauto
- [ "fauto" tactic(tac)] ->
- [
- let heuristic = chose_heuristic None in
- Proofview.V82.tactic (finduction None heuristic (Proofview.V82.of_tactic (Tacinterp.eval_tactic tac)))
- ]
- |
- [ "fauto" ] ->
- [
- let heuristic = chose_heuristic None in
- Proofview.V82.tactic (finduction None heuristic tclIDTAC)
- ]
-
-END
-
-
-TACTIC EXTEND poseq
- [ "poseq" ident(x) constr(c) ] ->
- [ Proofview.V82.tactic (poseq x c) ]
-END
-
-VERNAC COMMAND EXTEND Showindinfo CLASSIFIED AS QUERY
- [ "showindinfo" ident(x) ] -> [ Merge.showind x ]
-END
-
-VERNAC COMMAND EXTEND MergeFunind CLASSIFIED AS SIDEFF
- [ "Mergeschemes" "(" ident(id1) ne_ident_list(cl1) ")"
- "with" "(" ident(id2) ne_ident_list(cl2) ")" "using" ident(id) ] ->
- [
- let f1,ctx = Constrintern.interp_constr (Global.env()) Evd.empty
- (CRef (Libnames.Ident (Loc.ghost,id1),None)) in
- let f2,ctx' = Constrintern.interp_constr (Global.env()) Evd.empty
- (CRef (Libnames.Ident (Loc.ghost,id2),None)) in
- let f1type = Typing.type_of (Global.env()) Evd.empty f1 in
- let f2type = Typing.type_of (Global.env()) Evd.empty f2 in
- let ar1 = List.length (fst (decompose_prod f1type)) in
- let ar2 = List.length (fst (decompose_prod f2type)) in
- let _ =
- if not (Int.equal ar1 (List.length cl1)) then
- Errors.error ("not the right number of arguments for " ^ Id.to_string id1) in
- let _ =
- if not (Int.equal ar2 (List.length cl2)) then
- Errors.error ("not the right number of arguments for " ^ Id.to_string id2) in
- Merge.merge id1 id2 (Array.of_list cl1) (Array.of_list cl2) id
- ]
-END
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-14 23:09:47 +0000