diff options
Diffstat (limited to 'pretyping')
| -rw-r--r-- | pretyping/retyping.ml | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/pretyping/retyping.ml b/pretyping/retyping.ml index b01e30bac1..1a175465a3 100644 --- a/pretyping/retyping.ml +++ b/pretyping/retyping.ml @@ -25,18 +25,16 @@ let rec subst_type env sigma typ = function | Prod (na,c1,c2) -> subst_type env sigma (subst1 h c2) rest | _ -> anomaly (str "Non-functional construction") -(* Si ft est le type d'un terme f, lequel est appliqué à args, *) -(* [sort_of_atomic_ty] calcule ft[args] qui doit être une sorte *) -(* On suit une méthode paresseuse, en espèrant que ft est une arité *) -(* et sinon on substitue *) +(* If ft is the type of f which itself is applied to args, *) +(* [sort_of_atomic_type] computes ft[args] which has to be a sort *) let sort_of_atomic_type env sigma ft args = - let rec concl_of_arity env ar = - match kind_of_term (whd_betadeltaiota env sigma ar) with - | Prod (na, t, b) -> concl_of_arity (push_rel (na,None,t) env) b - | Sort s -> s - | _ -> decomp_sort env sigma (subst_type env sigma ft (Array.to_list args)) - in concl_of_arity env ft + let rec concl_of_arity env ar args = + match kind_of_term (whd_betadeltaiota env sigma ar), args with + | Prod (na, t, b), h::l -> concl_of_arity (push_rel (na,Some h,t) env) b l + | Sort s, [] -> s + | _ -> anomaly (str "Not a sort") + in concl_of_arity env ft (Array.to_list args) let type_of_var env id = try let (_,_,ty) = lookup_named id env in ty |