(* $Id$ *)
-module C = Cic
-module P = PrimitiveTactics
-module T = Tacticals
-module S = ProofEngineStructuralRules
-module F = FreshNamesGenerator
-module E = ProofEngineTypes
-module H = ProofEngineHelpers
-module R = ReductionTactics
-
-(*
-(* search in term the Inductive Types and return a list of uris as triples like this: (uri,typeno,exp_named_subst) *)
-let search_inductive_types ty =
- let rec aux types = function
- | C.MutInd (uri, typeno, _) when (not (List.mem (uri, typeno) types)) ->
- (uri, typeno) :: types
- | C.Appl applist -> List.fold_left aux types applist
- | _ -> types
- in
- aux [] ty
-(* N.B: in un caso tipo (and A forall C:Prop.(or B C)) l'or *non* viene selezionato! *)
-*)
+module C = Cic
+module P = PrimitiveTactics
+module T = Tacticals
+module S = ProofEngineStructuralRules
+module F = FreshNamesGenerator
+module PET = ProofEngineTypes
+module H = ProofEngineHelpers
+module RT = ReductionTactics
+module E = CicEnvironment
+module R = CicReduction
+module Un = CicUniv
+
+(* from ProceduralClasify ***************************************************)
+
+let split c t =
+ let add s v c = Some (s, C.Decl v) :: c in
+ let rec aux whd a n c = function
+ | C.Prod (s, v, t) -> aux false (v :: a) (succ n) (add s v c) t
+ | v when whd -> v :: a, n
+ | v -> aux true a n c (R.whd ~delta:true c v)
+ in
+ aux false [] 0 c t
-(* unexported tactics *******************************************************)
+(****************************************************************************)
type type_class = Other
| Ind
let premise_pattern what = None, [what, C.Implicit (Some `Hole)], None
+let get_inductive_type uri tyno =
+ match E.get_obj Un.empty_ugraph uri with
+ | C.InductiveDefinition (tys, _, lpsno, _), _ ->
+ let _, inductive, arity, _ = List.nth tys tyno in
+ lpsno, inductive, arity
+ | _ -> assert false
+
+let rec check_type = function
+ | C.MutInd (uri, tyno, _) ->
+ let lpsno, inductive, arity = get_inductive_type uri tyno in
+ let _, psno = split [] arity in
+ if lpsno <> psno && inductive then Other else Ind
+(* | C.Const (uri, _) as t ->
+ if List.mem (uri, None) types then Con (PET.const_lazy_term t) else Other
+*) | C.Appl (hd :: tl) -> check_type hd
+ | _ -> Other
+
+(* unexported tactics *******************************************************)
+
let rec scan_tac ~old_context_length ~index ~tactic =
let scan_tac status =
let (proof, goal) = status in
let tac = T.then_ ~start:(tactic ~what)
~continuation:(scan_tac ~old_context_length:context_length ~index ~tactic)
in
- try E.apply_tactic tac status
- with E.Fail _ -> aux (pred index)
+ try PET.apply_tactic tac status
+ with PET.Fail _ -> aux (pred index)
in aux (index + context_length - old_context_length)
in
- E.mk_tactic scan_tac
-
-let rec check_types types = function
- | C.MutInd (uri, typeno, _) ->
- if List.mem (uri, Some typeno) types then Ind else Other
- | C.Const (uri, _) as t ->
- if List.mem (uri, None) types then Con (E.const_lazy_term t) else Other
- | C.Appl (hd :: tl) -> check_types types hd
- | _ -> Other
+ PET.mk_tactic scan_tac
-let elim_clear_unfold_tac ~mk_fresh_name_callback ~types ~what =
+let elim_clear_unfold_tac ~mk_fresh_name_callback ~what =
let elim_clear_unfold_tac status =
let (proof, goal) = status in
let _, metasenv, _, _, _ = proof in
let _, context, _ = CicUtil.lookup_meta goal metasenv in
let index, ty = H.lookup_type metasenv context what in
- match check_types types ty with
- | Ind ->
- let tac = T.then_ ~start:(P.elim_intros_tac ~mk_fresh_name_callback (C.Rel index))
- ~continuation:(S.clear [what])
- in
- E.apply_tactic tac status
- | Con t ->
- let tac = R.unfold_tac (Some t) ~pattern:(premise_pattern what) in
- E.apply_tactic tac status
+ let tac = match check_type ty with
+ | Ind -> T.then_ ~start:(P.elim_intros_tac ~mk_fresh_name_callback (C.Rel index))
+ ~continuation:(S.clear [what])
+ | Con t -> RT.unfold_tac (Some t) ~pattern:(premise_pattern what)
| Other ->
- raise (E.Fail (lazy "unexported elim_clear: not an eliminable type"))
+ let msg = "unexported elim_clear: not an decomposable type" in
+ raise (PET.Fail (lazy msg))
+ in
+ PET.apply_tactic tac status
in
- E.mk_tactic elim_clear_unfold_tac
+ PET.mk_tactic elim_clear_unfold_tac
(* elim type ****************************************************************)
let tac =
T.thens ~start: (P.cut_tac what) ~continuations:[elim (C.Rel 1); T.id_tac]
in
- E.apply_tactic tac status
+ PET.apply_tactic tac status
in
- E.mk_tactic elim_type_tac
+ PET.mk_tactic elim_type_tac
(* decompose ****************************************************************)
(* roba seria ------------------------------------------------------------- *)
-let decompose_tac ?(mk_fresh_name_callback = F.mk_fresh_name ~subst:[])
- ?(user_types=[]) ?what ~dbd =
+let decompose_tac ?(mk_fresh_name_callback = F.mk_fresh_name ~subst:[]) () =
let decompose_tac status =
let (proof, goal) = status in
let _, metasenv,_,_, _ = proof in
let _, context, _ = CicUtil.lookup_meta goal metasenv in
- let types = List.rev_append user_types (FwdQueries.decomposables dbd) in
- let tactic = elim_clear_unfold_tac ~mk_fresh_name_callback ~types in
+ let tactic = elim_clear_unfold_tac ~mk_fresh_name_callback in
let old_context_length = List.length context in
- let tac = match what with
- | Some what ->
- T.then_ ~start:(tactic ~what)
- ~continuation:(scan_tac ~old_context_length ~index:1 ~tactic)
- | None ->
- scan_tac ~old_context_length ~index:old_context_length ~tactic
+ let tac = scan_tac ~old_context_length ~index:old_context_length ~tactic
in
- E.apply_tactic tac status
+ PET.apply_tactic tac status
in
- E.mk_tactic decompose_tac
+ PET.mk_tactic decompose_tac
projects / helm.git / blobdiff