--- a/src/HOL/MiniML/W.thy Mon Feb 05 21:27:16 1996 +0100
+++ b/src/HOL/MiniML/W.thy Mon Feb 05 21:29:06 1996 +0100
@@ -13,16 +13,16 @@
(* type inference algorithm W *)
consts
- W :: [expr, typ list, nat] => result_W
+ W :: [expr, typ list, nat] => result_W
primrec W expr
- W_Var "W (Var i) a n = (if i < length a then Ok(id_subst, nth i a, n)
- else Fail)"
- W_Abs "W (Abs e) a n = ( (s,t,m) := W e ((TVar n)#a) (Suc n);
- Ok(s, (s n) -> t, m) )"
- W_App "W (App e1 e2) a n =
- ( (s1,t1,m1) := W e1 a n;
- (s2,t2,m2) := W e2 ($s1 a) m1;
- u := mgu ($s2 t1) (t2 -> (TVar m2));
- Ok( $u o $s2 o s1, $u (TVar m2), Suc m2) )"
+ W_Var "W (Var i) a n = (if i < length a then Ok(id_subst, nth i a, n)
+ else Fail)"
+ W_Abs "W (Abs e) a n = ( (s,t,m) := W e ((TVar n)#a) (Suc n);
+ Ok(s, (s n) -> t, m) )"
+ W_App "W (App e1 e2) a n =
+ ( (s1,t1,m1) := W e1 a n;
+ (s2,t2,m2) := W e2 ($s1 a) m1;
+ u := mgu ($s2 t1) (t2 -> (TVar m2));
+ Ok( $u o $s2 o s1, $u (TVar m2), Suc m2) )"
end