module S = Share
module L = Log
module H = Hierarchy
-module I = AutItem
module B = Bag
module O = BagOutput
module E = BagEnvironment
let level = 4
-let error1 s c t =
- raise (TypeError (L.ct_items1 s c t))
+let log1 s c t =
+ let sc, st = s ^ " in the context", "the term" in
+ L.log O.specs level (L.ct_items1 sc c st t)
-let error2 s1 c1 t1 s2 c2 t2 =
- raise (TypeError (L.ct_items2 s1 c1 t1 s2 c2 t2))
+let error1 st c t =
+ let sc = "In the context" in
+ raise (TypeError (L.ct_items1 sc c st t))
+
+let error3 c t1 t2 t3 =
+ let sc, st1, st2, st3 =
+ "In the context", "the term", "is of type", "but must be of type"
+ in
+ raise (TypeError (L.ct_items3 sc c st1 t1 st2 t2 st3 t3))
let mk_gref u l =
let map t v = B.Appl (v, t) in
List.fold_left map (B.GRef u) l
-let add_coercion f t (i, uri, vs) =
- let rec add f x = match x with
- | B.Sort _
- | B.LRef _
- | B.GRef _ -> f x
- | B.Cast (u, t) ->
- let f uu =
- let f tt = f (S.sh2 u uu t tt x B.cast) in
- add f t
- in
- add f u
- | B.Appl (v, t) ->
- let f vv =
- let f tt = f (S.sh2 v vv t tt x B.appl) in
- add f t
- in
- add f v
- | B.Bind (l, _, _, _) when i = l ->
- if U.eq uri I.imp then f (mk_gref I.mt (vs @ [x])) else
- if U.eq uri I.all then f (mk_gref I.alli (vs @ [x])) else
- assert false
- | B.Bind (l, id, B.Abst w, t) ->
- let f ww =
- let f tt = f (S.sh2 w ww t tt x (B.bind_abst l id)) in
- add f t
- in
- add f w
- | B.Bind (l, id, B.Abbr v, t) ->
- let f vv =
- let f tt = f (S.sh2 v vv t tt x (B.bind_abbr l id)) in
- add f t
- in
- add f v
- | B.Bind (l, id, B.Void, t) ->
- let f tt = f (S.sh1 t tt x (B.bind l id B.Void)) in
- add f t
- in
- add f t
-
-let add_coercions f = C.list_fold_left f add_coercion
-
(* Interface functions ******************************************************)
let rec b_type_of f g c x =
- L.log O.specs level (L.ct_items1 "Now checking" c x);
+(* L.warn "Entering T.b_type_of"; *)
+ log1 "Now checking" c x;
match x with
| B.Sort h ->
let f h = f x (B.Sort h) in H.apply f g h
f (S.sh2 v xv t xt x (B.bind_abbr l id)) (B.bind_abbr l id xv tt)
in
let f xv cc = b_type_of (f xv) g cc t in
- let f xv = B.push (f xv) c l id (B.Abbr xv) in
+ let f xv = B.push "type abbr" (f xv) c l id (B.Abbr xv) in
let f xv vv = match xv with
| B.Cast _ -> f xv
| _ -> f (B.Cast (vv, xv))
f (S.sh2 u xu t xt x (B.bind_abst l id)) (B.bind_abst l id xu tt)
in
let f xu cc = b_type_of (f xu) g cc t in
- let f xu _ = B.push (f xu) c l id (B.Abst xu) in
+ let f xu _ = B.push "type abst" (f xu) c l id (B.Abst xu) in
type_of f g c u
| B.Bind (l, id, B.Void, t) ->
let f xt tt =
f (S.sh1 t xt x (B.bind l id B.Void)) (B.bind l id B.Void tt)
in
let f cc = b_type_of f g cc t in
- B.push f c l id B.Void
+ B.push "type void" f c l id B.Void
| B.Appl (v, t) ->
let f xv vv xt tt = function
| R.Abst w ->
L.box (succ level);
- L.log O.specs (succ level) (L.ct_items1 "Just scanned" c w);
+ L.log O.specs (succ level) (L.t_items1 "Just scanned" c w);
L.unbox (succ level);
- let f = function
- | Some [] -> f (S.sh2 v xv t xt x B.appl) (B.appl xv tt)
- | Some l ->
- L.log O.specs level (L.items1 "Rechecking coerced term");
- let f xv = b_type_of f g c (S.sh2 v xv t xt x B.appl) in
- add_coercions f xv l
- | None -> error2 "The term" c xv "must be of type" c w
+ let f a =
+(* L.warn (Printf.sprintf "Convertible: %b" a); *)
+ if a then f (S.sh2 v xv t xt x B.appl) (B.appl xv tt)
+ else error3 c xv vv w
in
R.are_convertible f c w vv
-(* inserting a missing "modus ponens" *)
- | R.GRef (uri, vs) when U.eq uri I.imp ->
- L.log O.specs level (L.items1 "Rechecking coerced term");
- b_type_of f g c (mk_gref I.mp (vs @ [xv; xt]))
- | R.GRef (uri, vs) when U.eq uri I.all ->
- L.log O.specs level (L.items1 "Rechecking coerced term");
- b_type_of f g c (mk_gref I.alle (vs @ [xv; xt]))
- | _ ->
+ | _ ->
error1 "not a function" c xt
in
let f xv vv xt tt = R.ho_whd (f xv vv xt tt) c tt in
let f xv vv = b_type_of (f xv vv) g c t in
type_of f g c v
| B.Cast (u, t) ->
- let f xu xt = function
- | Some [] -> f (S.sh2 u xu t xt x B.cast) xu
- | Some l ->
- L.log O.specs level (L.items1 "Rechecking coerced term");
- let f xt = b_type_of f g c (S.sh2 u xu t xt x B.cast) in
- add_coercions f xt l
- | None -> error2 "The term" c xt "must be of type" c xu
+ let f xu xt tt a =
+ (* L.warn (Printf.sprintf "Convertible: %b" a); *)
+ if a then f (S.sh2 u xu t xt x B.cast) xu else error3 c xt tt xu
in
- let f xu xt tt = R.are_convertible (f xu xt) c xu tt in
+ let f xu xt tt = R.are_convertible (f xu xt tt) c xu tt in
let f xu _ = b_type_of (f xu) g c t in
type_of f g c u
and type_of f g c x =
let f t u = L.unbox level; f t u in
L.box level; b_type_of f g c x
-
projects / helm.git / blobdiff