--- a/src/HOL/MiniML/I.thy Mon Feb 05 21:27:16 1996 +0100
+++ b/src/HOL/MiniML/I.thy Mon Feb 05 21:29:06 1996 +0100
@@ -8,16 +8,16 @@
I = W +
consts
- I :: [expr, typ list, nat, subst] => result_W
+ I :: [expr, typ list, nat, subst] => result_W
primrec I expr
- I_Var "I (Var i) a n s = (if i < length a then Ok(s, nth i a, n)
+ I_Var "I (Var i) a n s = (if i < length a then Ok(s, nth i a, n)
else Fail)"
- I_Abs "I (Abs e) a n s = ( (s,t,m) := I e ((TVar n)#a) (Suc n) s;
+ I_Abs "I (Abs e) a n s = ( (s,t,m) := I e ((TVar n)#a) (Suc n) s;
Ok(s, TVar n -> t, m) )"
- I_App "I (App e1 e2) a n s =
- ( (s1,t1,m1) := I e1 a n s;
- (s2,t2,m2) := I e2 a m1 s1;
- u := mgu ($s2 t1) ($s2 t2 -> TVar m2);
- Ok($u o s2, TVar m2, Suc m2) )"
+ I_App "I (App e1 e2) a n s =
+ ( (s1,t1,m1) := I e1 a n s;
+ (s2,t2,m2) := I e2 a m1 s1;
+ u := mgu ($s2 t1) ($s2 t2 -> TVar m2);
+ Ok($u o s2, TVar m2, Suc m2) )"
end