module D = Deannotate
module UM = UriManager
module Rd = CicReduction
+module PEH = ProofEngineHelpers
+module PT = PrimitiveTactics
+
+module DTI = DoubleTypeInference
(* helpers ******************************************************************)
in
lift_term k
+ let fake_annotate id c =
+ let get_binder c m =
+ try match List.nth c (pred m) with
+ | Some (C.Name s, _) -> s
+ | _ -> assert false
+ with
+ | Invalid_argument _ -> assert false
+ in
+ let mk_decl n v = Some (n, C.Decl v) in
+ let mk_def n v = Some (n, C.Def (v, None)) in
+ let mk_fix (name, _, _, bo) = mk_def (C.Name name) bo in
+ let mk_cofix (name, _, bo) = mk_def (C.Name name) bo in
+ let rec ann_xns c (uri, t) = uri, ann_term c t
+ and ann_ms c = function
+ | None -> None
+ | Some t -> Some (ann_term c t)
+ and ann_fix newc c (name, i, ty, bo) =
+ id, name, i, ann_term c ty, ann_term (List.rev_append newc c) bo
+ and ann_cofix newc c (name, ty, bo) =
+ id, name, ann_term c ty, ann_term (List.rev_append newc c) bo
+ and ann_term c = function
+ | C.Sort sort -> C.ASort (id, sort)
+ | C.Implicit ann -> C.AImplicit (id, ann)
+ | C.Rel m -> C.ARel (id, id, m, get_binder c m)
+ | C.Const (uri, xnss) -> C.AConst (id, uri, List.map (ann_xns c) xnss)
+ | C.Var (uri, xnss) -> C.AVar (id, uri, List.map (ann_xns c) xnss)
+ | C.MutInd (uri, tyno, xnss) -> C.AMutInd (id, uri, tyno, List.map (ann_xns c) xnss)
+ | C.MutConstruct (uri, tyno, consno, xnss) -> C.AMutConstruct (id, uri,tyno,consno, List.map (ann_xns c) xnss)
+ | C.Meta (i, mss) -> C.AMeta(id, i, List.map (ann_ms c) mss)
+ | C.Appl ts -> C.AAppl (id, List.map (ann_term c) ts)
+ | C.Cast (te, ty) -> C.ACast (id, ann_term c te, ann_term c ty)
+ | C.MutCase (sp, i, outty, t, pl) -> C.AMutCase (id, sp, i, ann_term c outty, ann_term c t, List.map (ann_term c) pl)
+ | C.Prod (n, s, t) -> C.AProd (id, n, ann_term c s, ann_term (mk_decl n s :: c) t)
+ | C.Lambda (n, s, t) -> C.ALambda (id, n, ann_term c s, ann_term (mk_decl n s :: c) t)
+ | C.LetIn (n, s, t) -> C.ALetIn (id, n, ann_term c s, ann_term (mk_def n s :: c) t)
+ | C.Fix (i, fl) -> C.AFix (id, i, List.map (ann_fix (List.rev_map mk_fix fl) c) fl)
+ | C.CoFix (i, fl) -> C.ACoFix (id, i, List.map (ann_cofix (List.rev_map mk_cofix fl) c) fl)
+ in
+ ann_term c
+
let clear_absts m =
let rec aux k n = function
| C.AImplicit (_, None) as t -> t
let mk_pattern psno predicate =
let body = generalize psno predicate in
clear_absts 0 psno body
+
+let get_clears c p xtypes =
+ let meta = C.Implicit None in
+ let rec aux c names p it et = function
+ | [] ->
+ List.rev c, List.rev names
+ | Some (C.Name name as n, C.Decl v) as hd :: tl ->
+ let hd, names, v =
+ if DTI.does_not_occur 1 p && DTI.does_not_occur 1 it && DTI.does_not_occur 1 et then
+ Some (C.Anonymous, C.Decl v), name :: names, meta
+ else
+ hd, names, v
+ in
+ let p = C.Lambda (n, v, p) in
+ let it = C.Prod (n, v, it) in
+ let et = C.Prod (n, v, et) in
+ aux (hd :: c) names p it et tl
+ | Some (C.Name name as n, C.Def (v, x)) as hd :: tl ->
+ let hd, names, v =
+ if DTI.does_not_occur 1 p && DTI.does_not_occur 1 it && DTI.does_not_occur 1 et then
+ Some (C.Anonymous, C.Def (v, x)), name :: names, meta
+ else
+ hd, names, v
+ in
+ let p = C.LetIn (n, v, p) in
+ let it = C.LetIn (n, v, it) in
+ let et = C.LetIn (n, v, et) in
+ aux (hd :: c) names p it et tl
+ | Some (C.Anonymous as n, C.Decl v) as hd :: tl ->
+ let p = C.Lambda (n, meta, p) in
+ let it = C.Lambda (n, meta, it) in
+ let et = C.Lambda (n, meta, et) in
+ aux (hd :: c) names p it et tl
+ | Some (C.Anonymous as n, C.Def (v, _)) as hd :: tl ->
+ let p = C.LetIn (n, meta, p) in
+ let it = C.LetIn (n, meta, it) in
+ let et = C.LetIn (n, meta, et) in
+ aux (hd :: c) names p it et tl
+ | None :: tl -> assert false
+ in
+ match xtypes with
+ | Some (it, et) -> aux [] [] p it et c
+ | None -> c, []
+
+let clear c hyp =
+ let rec aux c = function
+ | [] -> List.rev c
+ | Some (C.Name name, entry) :: tail when name = hyp ->
+ aux (Some (C.Anonymous, entry) :: c) tail
+ | entry :: tail -> aux (entry :: c) tail
+ in
+ aux [] c
+
+let elim_inferred_type context goal arg using cpattern =
+ let metasenv, ugraph = [], Un.empty_ugraph in
+ let ety, _ugraph = TC.type_of_aux' metasenv context using ugraph in
+ let _splits, args_no = PEH.split_with_whd (context, ety) in
+ let _metasenv, predicate, _arg, actual_args = PT.mk_predicate_for_elim
+ ~context ~metasenv ~ugraph ~goal ~arg ~using ~cpattern ~args_no
+ in
+ let ty = C.Appl (predicate :: actual_args) in
+ let upto = List.length actual_args in
+ Rd.head_beta_reduce ~delta:false ~upto ty