X-Git-Url: http://matita.cs.unibo.it/gitweb/?a=blobdiff_plain;ds=sidebyside;f=helm%2Fsoftware%2Flambda-delta%2Fbasic_rg%2FbrgType.ml;h=79949a3a745753596a391a32f05f5c07f7ebde4e;hb=a22628e5de37d3ffe9de056d7683f2ebdf7226fb;hp=97872734b3480a1a48510aa63cca1fb72851f3a7;hpb=cca5f6b7431b846b7bdcbf813632cb79580d5874;p=helm.git diff --git a/helm/software/lambda-delta/basic_rg/brgType.ml b/helm/software/lambda-delta/basic_rg/brgType.ml index 97872734b..79949a3a7 100644 --- a/helm/software/lambda-delta/basic_rg/brgType.ml +++ b/helm/software/lambda-delta/basic_rg/brgType.ml @@ -14,89 +14,118 @@ module C = Cps module A = Share module L = Log module H = Hierarchy +module Y = Entity module B = Brg module O = BrgOutput module E = BrgEnvironment module S = BrgSubstitution module R = BrgReduction +type message = (R.kam, B.term) Log.message + (* Internal functions *******************************************************) let level = 4 +let message1 st1 m t1 = + L.et_items1 "In the environment" m st1 t1 + let log1 s m t = let s = s ^ " the term" in - L.log O.specs level (R.message1 s m t) + L.log R.specs level (message1 s m t) -let error1 s m t = - raise (R.TypeError (R.message1 s m t)) +let error1 err s m t = + err (message1 s m t) -(* Interface functions ******************************************************) +let message3 m t1 t2 ?mu t3 = + let sm, st1, st2 = "In the environment", "the term", "is of type" in + match mu with + | Some mu -> + let smu, st3 = "but in the environment", "it must be of type" in + L.et_items3 sm m st1 t1 st2 t2 ~sc3:smu ~c3:mu st3 t3 + | None -> + let st3 = "but it must be of type" in + L.et_items3 sm m st1 t1 st2 t2 st3 t3 + +let error3 err m t1 t2 ?mu t3 = + err (message3 m t1 t2 ?mu t3) + +let assert_convertibility err f st m u w v = + if R.are_convertible st m u m w then f () else + error3 err m v w u + +let assert_applicability err f st m u w v = + match R.xwhd st m u with + | _, B.Sort _ -> error1 err "not a function type" m u + | mu, B.Bind (_, B.Abst u, _) -> + if R.are_convertible st mu u m w then f () else + error3 err m v w ~mu u + | _ -> assert false (**) -let rec b_type_of f ~si g m x = +let rec b_type_of err f st g m x = log1 "Now checking" m x; match x with - | B.Sort (a, h) -> + | B.Sort (a, h) -> let f h = f x (B.Sort (a, h)) in H.apply f g h - | B.LRef (_, i) -> - let f = function - | B.Abst (_, w) -> - S.lift (f x) (succ i) (0) w - | B.Abbr (_, B.Cast (_, w, _)) -> - S.lift (f x) (succ i) (0) w - | B.Abbr _ -> assert false - | B.Void _ -> - error1 "reference to excluded variable" m x - in - R.get f m i - | B.GRef (_, uri) -> - let f = function - | _, _, B.Abst (_, w) -> f x w - | _, _, B.Abbr (_, B.Cast (_, w, _)) -> f x w - | _, _, B.Abbr _ -> assert false - | _, _, B.Void _ -> - error1 "reference to excluded object" m x - in - E.get_obj f uri - | B.Bind (B.Abbr (a, v), t) -> + | B.LRef (_, i) -> + begin match R.get m i with + | B.Abst w -> + f x (S.lift (succ i) (0) w) + | B.Abbr (B.Cast (_, w, _)) -> + f x (S.lift (succ i) (0) w) + | B.Abbr _ -> assert false + | B.Void -> + error1 err "reference to excluded variable" m x + end + | B.GRef (_, uri) -> + begin match E.get_entity uri with + | _, _, Y.Abst w -> f x w + | _, _, Y.Abbr (B.Cast (_, w, _)) -> f x w + | _, _, Y.Abbr _ -> assert false + | _, _, Y.Void -> + error1 err "reference to unknown entry" m x + end + | B.Bind (a, B.Abbr v, t) -> let f xv xt tt = f (A.sh2 v xv t xt x (B.bind_abbr a)) (B.bind_abbr a xv tt) in - let f xv m = b_type_of (f xv) ~si g m t in - let f xv = R.push (f xv) m (B.abbr a xv) in + let f xv m = b_type_of err (f xv) st g m t in + let f xv = f xv (R.push m a (B.abbr xv)) in let f xv vv = match xv with | B.Cast _ -> f xv | _ -> f (B.Cast ([], vv, xv)) in - type_of f ~si g m v - | B.Bind (B.Abst (a, u), t) -> + type_of err f st g m v + | B.Bind (a, B.Abst u, t) -> let f xu xt tt = f (A.sh2 u xu t xt x (B.bind_abst a)) (B.bind_abst a xu tt) in - let f xu m = b_type_of (f xu) ~si g m t in - let f xu _ = R.push (f xu) m (B.abst a xu) in - type_of f ~si g m u - | B.Bind (B.Void a as b, t) -> + let f xu m = b_type_of err (f xu) st g m t in + let f xu _ = f xu (R.push m a (B.abst xu)) in + type_of err f st g m u + | B.Bind (a, B.Void, t) -> let f xt tt = - f (A.sh1 t xt x (B.bind b)) (B.bind b tt) + f (A.sh1 t xt x (B.bind_void a)) (B.bind_void a tt) in - let f m = b_type_of f ~si g m t in - R.push f m b - | B.Appl (a, v, t) -> + b_type_of err f st g (R.push m a B.Void) t + + | B.Appl (a, v, t) -> let f xv vv xt tt = - let f () = f (A.sh2 v xv t xt x (B.appl a)) (B.appl a xv tt) in - R.assert_conversion f ~si ~rt:true m tt vv xv + let f _ = f (A.sh2 v xv t xt x (B.appl a)) (B.appl a xv tt) in + assert_applicability err f st m tt vv xv in - let f xv vv = b_type_of (f xv vv) ~si g m t in - type_of f ~si g m v - | B.Cast (a, u, t) -> + let f xv vv = b_type_of err (f xv vv) st g m t in + type_of err f st g m v + | B.Cast (a, u, t) -> let f xu xt tt = - let f () = f (A.sh2 u xu t xt x (B.cast a)) xu in - R.assert_conversion f ~si m xu tt xt + let f _ = f (A.sh2 u xu t xt x (B.cast a)) xu in + assert_convertibility err f st m xu tt xt in - let f xu _ = b_type_of (f xu) ~si g m t in - type_of f ~si g m u + let f xu _ = b_type_of err (f xu) st g m t in + type_of err f st g m u + +(* Interface functions ******************************************************) -and type_of f ?(si=false) g m x = +and type_of err f st g m x = let f t u = L.unbox level; f t u in - L.box level; b_type_of f ~si g m x + L.box level; b_type_of err f st g m x