Procedural: now patterns for rewrite are generated correctly

diff --git a/helm/software/components/acic_procedural/acic2Procedural.ml b/helm/software/components/acic_procedural/acic2Procedural.ml
index 6512938df3435ca46ad2273ae89d538f12cc6693..bbc358f71e7fbc0db2eebce8f7624e393d072877 100644 (file)
--- a/helm/software/components/acic_procedural/acic2Procedural.ml
+++ b/helm/software/components/acic_procedural/acic2Procedural.ml
@@ -252,6 +252,8 @@ and mk_fwd_proof st dtext name = function
          | None   -> [T.LetIn (name, v, dtext)] 
          | Some v -> mk_fwd_proof st dtext name v
       end
+   | C.ACast (_, v, _)                                  ->
+      mk_fwd_proof st dtext name v
    | v                                                  ->
       match get_inner_types st v with
          | Some (ity, _) ->
@@ -333,6 +335,8 @@ and mk_proof st = function
             mk_intros st script
 (*         | Some t -> mk_proof st t *)
       end
+   | C.ACast (_, t, _)                             ->
+      mk_proof st t
    | t                                             ->
       let text = Printf.sprintf "%s: %s" "UNEXPANDED" (string_of_head t) in
       let script = [T.Note text] in

diff --git a/helm/software/components/acic_procedural/proceduralConversion.ml b/helm/software/components/acic_procedural/proceduralConversion.ml
index 77b5a181783ae597c3e0a785c9c105918a20f07b..3bee4dd57e0cdebc9c7bbb3298b159ec964d5b36 100644 (file)
--- a/helm/software/components/acic_procedural/proceduralConversion.ml
+++ b/helm/software/components/acic_procedural/proceduralConversion.ml
@@ -78,7 +78,10 @@ let lift k n =
    and lift_term k = function
       | C.ASort _ as t -> t
       | C.AImplicit _ as t -> t
-      | C.ARel (id, rid, m, b) as t -> if m < k then t else C.ARel (id, rid, m + n, b)
+      | C.ARel (id, rid, m, b) as t -> 
+         if m < k then t else 
+        if m + n > 0 then C.ARel (id, rid, m + n, b) else
+        assert false
       | C.AConst (id, uri, xnss) -> C.AConst (id, uri, List.map (lift_xns k) xnss)
       | C.AVar (id, uri, xnss) -> C.AVar (id, uri, List.map (lift_xns k) xnss)
       | C.AMutInd (id, uri, tyno, xnss) -> C.AMutInd (id, uri, tyno, List.map (lift_xns k) xnss)
@@ -135,13 +138,20 @@ let fake_annotate c =
    in
    ann_term c
 
-let rec add_abst n t =
-   if n <= 0 then t else
-   let t = C.ALambda ("", C.Name "foo", C.AImplicit ("", None), lift 0 1 t) in  
-   add_abst (pred n) t
+let clear_absts m =
+   let rec aux k n = function
+      | C.ALambda (id, s, v, t) when k > 0 -> 
+         C.ALambda (id, s, v, aux (pred k) n t)
+      | C.ALambda (_, _, _, t) when n > 0 -> 
+         aux 0 (pred n) (lift 1 (-1) t)
+      | t                      when n > 0 -> assert false
+      | t                                 -> t
+   in 
+   aux m
 
 let mk_ind context id uri tyno outty arg cases =
-try   
+try
+   let sort_disp = 0 in
    let is_recursive = function
       | C.MutInd (u, no, _) -> UM.eq u uri && no = tyno
       | _                   -> false
@@ -154,11 +164,10 @@ try
       | _                           -> assert false
    in
    let lps, rps = T.list_split lpsno ps in
+   let rpsno = List.length rps in
    let eliminator = get_default_eliminator context uri tyno inty in
    let eliminator = fake_annotate context eliminator in
-   let arg_ref = T.mk_arel 0 "foo" in
-   let body = C.AMutCase (id, uri, tyno, outty, arg_ref, cases) in
-   let predicate = add_abst (succ (List.length rps)) body in   
+   let predicate = clear_absts rpsno (1 - sort_disp) outty in   
    let map2 case (_, cty) = 
       let map (h, case, k) premise = 
          if h > 0 then pred h, lift k 1 case, k else
@@ -176,47 +185,59 @@ try
    Some (C.AAppl (id, args))
 with Invalid_argument _ -> failwith "PCn.mk_ind"
 
-let apply_substs substs =
-   let length = List.length substs in
-   let rec apply_xns k (uri, t) = uri, apply_term k t
-   and apply_ms k = function
-      | None   -> None
-      | Some t -> Some (apply_term k t)
-   and apply_fix len k (id, name, i, ty, bo) =
-      id, name, i, apply_term k ty, apply_term (k + len) bo
-   and apply_cofix len k (id, name, ty, bo) =
-      id, name, apply_term k ty, apply_term (k + len) bo
-   and apply_term k = function
-      | C.ASort _ as t -> t
-      | C.AImplicit _ as t -> t
-      | C.ARel (id, rid, m, b) as t -> 
-         if m < k || m >= length + k then t 
-        else lift 1 k (List.nth substs (m - k))
-      | C.AConst (id, uri, xnss) -> C.AConst (id, uri, List.map (apply_xns k) xnss)
-      | C.AVar (id, uri, xnss) -> C.AVar (id, uri, List.map (apply_xns k) xnss)
-      | C.AMutInd (id, uri, tyno, xnss) -> C.AMutInd (id, uri, tyno, List.map (apply_xns k) xnss)
-      | C.AMutConstruct (id, uri, tyno, consno, xnss) -> C.AMutConstruct (id, uri,tyno,consno, List.map (apply_xns k) xnss)
-      | C.AMeta (id, i, mss) -> C.AMeta(id, i, List.map (apply_ms k) mss)
-      | C.AAppl (id, ts) -> C.AAppl (id, List.map (apply_term k) ts)
-      | C.ACast (id, te, ty) -> C.ACast (id, apply_term k te, apply_term k ty)
-      | C.AMutCase (id, sp, i, outty, t, pl) -> C.AMutCase (id, sp, i, apply_term k outty, apply_term k t, List.map (apply_term k) pl)
-      | C.AProd (id, n, s, t) -> C.AProd (id, n, apply_term k s, apply_term (succ k) t)
-      | C.ALambda (id, n, s, t) -> C.ALambda (id, n, apply_term k s, apply_term (succ k) t)
-      | C.ALetIn (id, n, s, t) -> C.ALetIn (id, n, apply_term k s, apply_term (succ k) t)
-      | C.AFix (id, i, fl) -> C.AFix (id, i, List.map (apply_fix (List.length fl) k) fl)
-      | C.ACoFix (id, i, fl) -> C.ACoFix (id, i, List.map (apply_cofix (List.length fl) k) fl)
-   in
-   apply_term 1
+let hole id = C.AImplicit (id, Some `Hole)
 
-let hole = C.AImplicit ("", Some `Hole)
+let meta id = C.AImplicit (id, None)
 
-let mk_pattern rps predicate = hole
-(*   let rec clear_absts n = function
-      | C.ALambda (_, _, _, t) when n > 0 -> clear_absts (pred n) t
-(*      | t                      when n > 0 -> assert false *)
-      | t                                 -> t
+let anon = C.Anonymous
+
+let generalize n =
+   let is_meta =
+      let map b = function
+         | C.AImplicit (_, None) when b -> b
+        | _                            -> false
+      in
+      List.fold_left map true
+   in
+   let rec gen_fix len k (id, name, i, ty, bo) =
+      id, name, i, gen_term k ty, gen_term (k + len) bo
+   and gen_cofix len k (id, name, ty, bo) =
+      id, name, gen_term k ty, gen_term (k + len) bo
+   and gen_term k = function
+      | C.ASort (id, _) 
+      | C.AImplicit (id, _)
+      | C.AConst (id, _, _)
+      | C.AVar (id, _, _)
+      | C.AMutInd (id, _, _, _)
+      | C.AMutConstruct (id, _, _, _, _)
+      | C.AMeta (id, _, _) -> meta id
+      | C.ARel (id, _, m, _) -> 
+         if m = succ (n - k) then hole id else meta id
+      | C.AAppl (id, ts) -> 
+         let ts = List.map (gen_term k) ts in
+         if is_meta ts then meta id else C.AAppl (id, ts)
+      | C.ACast (id, te, ty) -> 
+         let te, ty = gen_term k te, gen_term k ty in
+        if is_meta [te; ty] then meta id else C.ACast (id, te, ty)
+      | C.AMutCase (id, sp, i, outty, t, pl) ->         
+        let outty, t, pl = gen_term k outty, gen_term k t, List.map (gen_term k) pl in
+        if is_meta (outty :: t :: pl) then meta id else hole id (* C.AMutCase (id, sp, i, outty, t, pl) *)
+      | C.AProd (id, _, s, t) -> 
+         let s, t = gen_term k s, gen_term (succ k) t in
+         if is_meta [s; t] then meta id else C.AProd (id, anon, s, t)
+      | C.ALambda (id, _, s, t) ->
+         let s, t = gen_term k s, gen_term (succ k) t in
+         if is_meta [s; t] then meta id else C.ALambda (id, anon, s, t)
+      | C.ALetIn (id, _, s, t) -> 
+         let s, t = gen_term k s, gen_term (succ k) t in
+         if is_meta [s; t] then meta id else C.ALetIn (id, anon, s, t)
+      | C.AFix (id, i, fl) -> C.AFix (id, i, List.map (gen_fix (List.length fl) k) fl)
+      | C.ACoFix (id, i, fl) -> C.ACoFix (id, i, List.map (gen_cofix (List.length fl) k) fl)
    in
-   let substs = hole :: List.rev rps in
-   let body = clear_absts (succ (List.length rps)) predicate in
-   if M.is_appl true (cic body) then apply_substs substs body else hole
-*)
+   gen_term 0
+
+let mk_pattern rps predicate =
+   let sort_disp = 0 in
+   let rpsno = List.length rps in
+   let body = generalize (rpsno + sort_disp) predicate in
+   clear_absts 0 (rpsno + sort_disp) body

diff --git a/helm/software/components/acic_procedural/proceduralMode.mli b/helm/software/components/acic_procedural/proceduralMode.mli
index 96a0b3b132709e620356918894cf83d3c95d6ff3..2f0e7e9f49d292390458f3e3afdb947f640100c1 100644 (file)
--- a/helm/software/components/acic_procedural/proceduralMode.mli
+++ b/helm/software/components/acic_procedural/proceduralMode.mli
@@ -26,5 +26,3 @@
 val is_eliminator: Cic.term list -> bool
 
 val bkd: Cic.context -> Cic.term -> bool
-
-val is_appl: bool -> Cic.term -> bool